Patent Publication Number: US-2022235534-A1

Title: Swivel working machine

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application claims the benefit of priority to Japanese Patent Application No. 2021-011436 filed on Jan. 27, 2021. The entire contents of this application are hereby incorporated herein by reference. 
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a swivel working machine including a backhoe or so on. 
     2. Description of the Related Art 
     A swivel working machine disclosed in Japanese Unexamined Patent Publication No. 2009-52285 is known. 
     The swivel working machine disclosed in Japanese Unexamined Patent Publication No. 2009-52285 includes a machine body that can swivel around a swivel axis, and a working device attached to the machine body swingably around the swing axis. A swivel movement in which the machine body swivels is performed by an operation of an operation member that is handled and operated by an operator. A swing movement in which the working device is swung is performed by a swing pedal to be operated by a foot of an operator. 
     SUMMARY OF THE INVENTION 
     There is a working machine called a TLB (Tractor Loader Backhoe) in which a front loader is attached to a front portion of the tractor and a backhoe is attached to a rear portion of the tractor. In this TLB, the working device mounted on the backhoe generally can be swung by an operation member handled and operated by an operator. In a case where an operator who is accustomed to riding this TLB uses the swivel working machine, the operator desires to swing the working device through an operation of the operation member handled and operated by the operator. 
     In view of the problems, a swivel working machine is configured to swing a working machine by means of an operation member handled and operated by an operator. 
     In an aspect, a swivel working machine includes a machine body swivelable around a swivel axis, a working device attached to the machine body swingably around a swing axis, an operation member to be handled and operated by an operator, and a controller to control swivel movement, which is a swiveling movement of the machine body, and swing movement, which is a swinging movement of the working device. The controller includes an operation pattern shifting unit configured or programmed to perform shifting between a swivel operation state where operation of the operation member in a specific direction causes the swivel movement and a swing operation state where the operation of the operation member in the specific direction causes the swing movement. 
     The above and other elements, features, steps, characteristics and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments with reference to the attached drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       A more complete appreciation of preferred embodiments of the present invention and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings described below. 
         FIG. 1  is a side view of a swivel working machine. 
         FIG. 2  is a plan view of the swivel working machine. 
         FIG. 3  is a schematic view of a hydraulic system. 
         FIG. 4  is a schematic view of a control system. 
         FIG. 5  is a perspective view of an operation member. 
         FIG. 6  is a view showing an example of an operation pattern of the operation member. 
         FIG. 7  is a view showing a pattern shifting member. 
         FIG. 8  is a view showing another example of the operation pattern of the operation member. 
         FIG. 9  is a view showing configurations of the swivel working machine. 
         FIG. 10  is a configuration view showing a control valve and the like according to an alternative embodiment. 
         FIG. 11  is a configuration view showing a control valve and the like according to another alternative embodiment. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The preferred embodiments will now be described with reference to the accompanying drawings, wherein like reference numerals designate corresponding or identical elements throughout the various drawings. The drawings are to be viewed in an orientation in which the reference numerals are viewed correctly. 
     Referring to drawings, an embodiment of the invention will be described below. 
       FIG. 1  is a schematic side view showing an overall configuration of a swivel working machine  1 .  FIG. 2  is a schematic plan view of the swivel working machine  1 . In the embodiment, a backhoe is illustrated as the swivel working machine  1 . 
     As shown in  FIGS. 1 and 2 , the swivel working machine  1  includes a machine body (swivel base)  2 , a traveling device  3 , and a working device  4 . A cabin  5  is mounted on the machine body  2 . In an interior of the cabin  5 , a driver&#39;s seat  6  on which an operator (driver) sits. 
     In the embodiment, a forward direction of the operator sitting on the operator&#39;s seat  6  of the swivel working machine  1  (a direction of an arrowed line A 1  in  FIGS. 1 and 2 ) is referred to as the front (forward of the machine body), and a backward direction of the operator (a direction of an arrowed line A 2  in  FIGS. 1 and 2 ) is referred to as the rear (backward of the machine body), and an arrowed line K 1  in  FIGS. 1 and 2  is referred to as a fore-and-aft direction. In addition, a leftward direction of the operator (a front surface side of a sheet of  FIG. 1 , a direction of an arrowed line A 3  in  FIG. 2 ) is referred to as the left, and a rightward direction of the operator (a back surface side of the sheet of  FIG. 1 , a direction of an arrowed line A 4  in  FIG. 2 ) is referred to as the right. 
     A horizontal direction, which is orthogonal to the fore-and-aft direction (fore-and-aft direction in machine body) K 1 , is referred to as a machine width direction K 2  (see  FIG. 2 ). A direction extending rightward or leftward from the machine-width directional center of the machine body  2  is referred to as an outward direction in the machine width. That is, a machine width directional outward direction is one machine width direction K 2  separating away from the machine-width directional center of the machine body  2 . A direction opposite to the machine-width directional outward direction is referred to as a machine-width directional inward direction. That is, the machine-width directional inward direction is the other machine width direction K 2  approaching the machine-width directional center of the machine body  2 . 
     As shown in  FIG. 1  and  FIG. 2 , the traveling device  3  is a device that travelably supports the machine body  2 . The traveling device  3  includes a traveling frame  3 A, a first traveling device  3 L disposed on a left side of the traveling frame  3 A, and a second traveling device  3 L disposed on a right side of the traveling frame  3 A. The first traveling device  3 L and the second traveling device  3 R are crawler-type traveling devices. The traveling device  3  is driven by traveling motor M 1  constituted of hydraulic motors (hydraulic actuators). In detail, the traveling motors M 1  include a first traveling motor ML for driving the first traveling device  3 L and a second traveling motor MR for driving the second traveling device  3 R. 
     A dozer  7  is attached to a front portion of the traveling device  3 . The dozer  7  is driven by a dozer cylinder C 1 . In detail, the dozer cylinder C 1  is constituted of a hydraulic cylinder (hydraulic actuator). The dozer cylinder C 1  is extended and contracted to raise and lower a blade  7 A of the dozer  7 . 
     As shown in  FIG. 1 , the machine body  2  is supported on the traveling device  3  (the traveling frame  3 A) via a swivel bearing  8  so that to the machine body  2  can swivel around a swivel axis X 1 . The swivel axis X 1  is an axis (vertical axis) extending in a vertical direction through the center of the swivel bearing  8 . 
     As shown in  FIG. 2 , the cabin  5  is mounted on one side portion (left side portion) of the machine body  2  in the width direction K 2 . The cabin  5  is located closer to the one side portion (left side portion) in the machine width direction K 2  than a center line Y 1  extending in the fore-and-aft direction K 1  across the swivel axis X 1 . 
     As shown in  FIG. 2 , a prime mover E 1  is mounted on the other side portion (right side portion) of the machine body  2  in the width direction K 2 . The prime mover E 1  is mounted longitudinally on the machine body  2 . The longitudinally mounting means that a crankshaft of the prime mover E 1  is arranged with its axis extending in the fore-and-aft direction K 1 . The prime mover E 1  is a diesel engine. The prime mover E 1  may be a gasoline engine, an electric motor, or a hybrid type having an engine and an electric motor. 
     A pressure fluid supply unit  18  is disposed on a rear portion of the prime mover E 1 . The pressure fluid supply unit  18  is driven by a power of the prime mover E 1  to pressurize and deliver hydraulic fluid used for hydraulic drivers. The hydraulic drivers include, for example, a hydraulic actuator provided in the swivel working machine  1 . A radiator R 1 , an oil cooler O 1  and a condenser CD are arranged in front of the prime mover E 1 , and are mounted on the machine body  2 . The radiator R 1  is a cooling device configured to cool the cooling water (fluid) for the prime mover E 1 , and the oil cooler O 1  is a cooling device configured to cool the hydraulic fluid (fluid). The oil cooler O 1  is a cooling device that cools the hydraulic oil (fluid). In addition, the condenser CD is a cooling device (condenser) configured to cool a refrigerant (fluid) of an air conditioning device (air conditioner) provided in the swivel working machine  1 . 
     A cooling fan F 1  for generating a cooling air to cool the prime mover E 1  is disposed between the radiator R 1  and the prime mover E 1 . The cooling fan F 1  is driven by a power of the prime mover E 1  to generate the cooling air flowing from the front to the rear. 
     As shown in  FIG. 1 , the machine body  2  includes a base plate (hereinafter referred to as a swivel base)  9  that swivels around the swivel axis X 1 . The swivel base  9  is formed of a steel plate or the like, and defines a bottom portion of the machine body  2 . On an upper surface of the swivel base  9 , a longitudinal rib  9 A, which is a reinforcing member, is disposed and extended from the front to the rear. The swivel base  9  includes the longitudinal rib  9 A and members for supporting components to be mounted on the machine body  2 , thereby constituting a swivel frame, which is a framework of the machine body  2 . A circumference of the swivel frame in the horizontal direction is covered with a swivel cover. 
     A weight  10  is disposed on a rear portion of the machine body  2 . The weight  10  is located at the rear portion of the machine body  2 , and a lower portion of the weight  10  is attached to the swivel base  9 . 
     As shown in  FIG. 2 , a fuel tank T 1  and a hydraulic fluid tank T 2 , which are arranged side by side in the machine width direction K 2 , are mounted on the rear portion of the machine body  2 . The fuel tank T 1  is a tank configured to store fuel for the prime mover E 1 . The hydraulic fluid tank T 2  is a tank configured to store the hydraulic fluid. 
     As shown in  FIG. 2 , a swivel motor MT is located at a front portion of the swivel base  9  (machine body  2 ) and at the center portion of the swivel base  9  in the machine width direction K 2 . The swivel motor MT swivels the swivel base  9  rotatably around the swivel axis X 1 . The swivel motor MT is a hydraulic motor (hydraulic actuator). A swivel joint S 1  is disposed at a position of the swivel axis X 1 . The swivel joint S 1  is a hydraulic device for supplying the hydraulic fluid, and is a rotary coupler (rotary joint) that supplies the hydraulic fluid between the hydraulic devices on the machine body  2  and the hydraulic devices on the traveling device  3 . A control valve CV is located behind the swivel joint S 1 . The control valve CV is a sectional type combined control valve having a plurality of control valves stacked and coupled in the vertical direction. A controller U 1  is disposed below the cabin  5 . 
     A steering device  1 B for steering the swivel working machine  1  is provided inside the cabin  5 . The steering device  1 B is installed in front of the driver&#39;s seat  6 . A driving unit  1 C includes the driver&#39;s seat  6  and the steering device  1 B. 
     As shown in  FIG. 2 , the machine body  2  includes a support bracket  13  disposed at a front portion of the machine body  2  slightly rightward of the center in the machine width direction K 2 . The support bracket  13  is fixed to a front portion of the longitudinal rib  9 A, and protrudes forward from the machine body  2 . 
     As shown in  FIGS. 1 and 2 , a swing bracket  14  is attached to, via a swing shaft  14 A, a front portion of the support bracket  13  (a portion protruding from the machine body  2 ) so that the swing bracket  14  can swing around the swing axis X 2 . The swing axis X 2  is an axis extending in the vertical direction. Accordingly, the swing bracket  14  is rotatable in the machine width direction K 2  (in the horizontal direction around the swing axis  14 A). 
     As shown in  FIG. 1 , the working device  4  is supported by the swing bracket  14  (machine body  2 ). Accordingly, the working device  4  is attached to the machine body  2  swingably around the swing axis X 2 . 
     The working device  4  includes a boom  15  supported by the machine body  2  swingably in the vertical direction (vertically swingable), an arm  16  pivotally connected to the boom  15  to be swingable, and a working tool (bucket)  17  pivotably connected to the arm  16  to be swingable. 
     A base portion of the boom  15  is pivotally connected, via a pivotal shaft, to an upper portion of the swing bracket  14 . In detail, the base portion of the boom  15  is pivotally attached to an upper portion of the swing bracket  14  swingably around a lateral axis (an axis extending in the machine width direction K 2 ) with the boom  15  is facing the front direction of the machine body. In this manner, the boom  15  is configured to swing in the vertical direction (vertically swingable). 
     The arm  16  is pivotally supported at a tip portion of the boom  15  via a pivotal shaft. In detail, the arm  16  is pivotably attached to the boom  15  swingably around the lateral axis on an assumption that the boom  15  faces forward of the machine body. In this manner, the arm  16  is configured to swing in the fore-and-aft direction K 1  or the vertical direction. In addition, the arm  16  is swingable in an arm clouding direction D 1 , which is a direction approaching the boom  15 , or in an arm dumping direction D 2 , which is a direction separating from the boom  15 . 
     The working tool  17  is pivotally supported by the tip portion of the arm  16  via a pivotal shaft. In detail, the working tool  17  is pivotably attached to the arm  16  swingably around the lateral axis with the boom  15  facing the front direction of the machine body. In this manner, the working tool  17  is capable of swinging in a bucket clouding direction D 4 , which is a direction approaching the arm  16 , and in a bucket dumping direction D 3 , which is a direction separating from the arm  16 . In addition, the bucket serving as the working tool  17  is disposed on the arm  16  so that the bucket can move in a scooping movement and a dumping movement. The scooping movement is a movement to swing the working tool  17  in the direction to approach the boom  15  (bucket clouding direction D 4 ), that is, a movement to scoop, for example, dirt and sand. In addition, the dumping movement is a movement to swing the working tool  17  in the direction to separate away from the boom  15  (bucket dumping direction D 3 ), that is, a movement to drop (discharge), for example, scooped dirt and sand. 
     The swivel working machine  1  can be equipped with an alternative working tool that can be driven by a hydraulic actuator (a hydraulic attachment AUX attached to the working device  4  (see  FIG. 3 )). For example, the alternative working tool may be a thumb, a hydraulic breaker, a hydraulic crusher, an angle broom, an earth auger, a pallet fork, a sweeper, a mower, a snow blower, or the like. 
     The swing bracket  14  can be swung by extending and contracting a swing cylinder C 2  provided in the machine body  2 . The boom  15  can be swung up and down by extending and contracting of a boom cylinder C 3 . The arm  16  can be swung in the arm clouding direction D 1  and the arm dumping direction D 2  by extending and contracting of an arm cylinder C 4 . The working tool  17  can be swung in the bucket clouding direction D 4  and the bucket dumping direction D 3  by extending and contracting of a working tool cylinder (bucket cylinder) C 5 . The swing cylinder C 2 , the boom cylinder C 3 , the arm cylinder C 4 , and the working tool cylinder C 5  are constituted of hydraulic cylinders (hydraulic actuators). 
     As shown in  FIG. 3 , the control valve CV is configured by integrally arranging, in one direction, control valves V 1  to V 11  for controlling various types of hydraulic actuators ML, MR, MT, and C 1  to C 7 , an inlet block B 2  for taking pressure fluid, and a pair of outlet blocks B 1  and B 3  for discharging the pressure fluid. In detail, the control valve CV, in the embodiment, is configured by arranging, in turn (arranging from the right in  FIG. 3 ), the first outlet block B 1 , the working tool control valve V 1  for controlling the working tool cylinder C 5 , the boom control valve V 2  for controlling the boom cylinder C 3 , the first dozer control valve V 3  for controlling the dozer cylinder C 1 , the second traveling control valve V 4  for controlling the traveling motor MR of the second traveling device  3 R, the inlet block B 2 , the first traveling control valve V 5  for controlling the traveling motor ML of the first traveling device  3 L, the second dozer control valve V 6  for controlling the dozer cylinder C 1 , the arm control valve V 7  for controlling the arm cylinder C 4 , the swivel control valve V 8  for controlling the swivel motor MT, the swing control valve V 9  for controlling the swing cylinder C 2 , the first SP control valve V 10  for controlling the first attachment actuator C 6 , the second SP control valve V 11  for controlling the second attachment actuator C 7 , and the second outlet block B 3 , which are connected to each other. 
     As shown in  FIG. 3 , the first attachment actuator C 6  and the second attachment actuator C 7  are hydraulic actuators installed in the hydraulic attachments AUX that is installed instead of or in addition to the bucket  24 . The hydraulic attachments AUX include a first hydraulic attachment AUX 1  and a second hydraulic attachment AUX 2 . The first attachment actuator C 6  is installed in the first hydraulic attachment AUX 1 , and the second attachment actuator C 7  is installed in the second hydraulic attachment AUX 2 . 
     As shown in  FIG. 3 , hydraulic pumps serving as pressure fluid supply sources for the control valve CV includes a first pump  21  for supplying the hydraulic fluid that operates the hydraulic actuators ML, MR, MT, and C 1  to C 7 , and a second pump  22  for supplying signal pressure fluid (the hydraulic fluid) functioning as a pilot control pressure, a detection signal and the like. The first pump  21  and the second pump  22  are installed in the pressure fluid supply unit  18 , and are driven by the prime mover E 1 . 
     The first pump  21  has two outlet ports. A first outlet port P 1  is connected to the inlet block B 2  via a first outlet passage a. A second outlet port P 2  is connected to the inlet block B 2  via a second outlet passage b. The pressure fluid (hydraulic fluid) supplied to the inlet block B 2  is supplied to the respective control valves V 1  to V 11 . 
     As shown in  FIG. 4 , each of the control valves V 1  to V 11  is constituted of a direct-acting spool-type switching valve. In addition, each of the control valves V 1  to V 11  is a control valve electrically controlled by the controller U 1 . In detail, a pilot-operated proportional solenoid valve, for example, serves as each of the control valves V 1  to V 11 . A pilot-operated proportional solenoid valve is a valve configured to move a spool with a pilot control pressure controlled by a proportional solenoid, thereby controlling a flow direction and a flow rate of the hydraulic fluid. In detail, a pilot-operated proportional solenoid valve is a two-stage directional/flow-rate control valve that uses, in a pilot section, a proportional solenoid pressure-reducing valve with two proportional solenoids. The flow rate is controlled by changing an electric current input to the proportional solenoids, and the direction is controlled by applying an electric current to either one of the two proportional solenoids. 
     As shown in  FIG. 4 , proportional solenoids so 1  to so 11  of the respective control valves V 1  to V 11  are connected to the controller U 1 . The controller U 1  is, for example, constituted of a microcomputer including a CPU (Central Processing Unit) and EEPROM (Electrically Erasable Programmable Read-Only Memory). By the pilot control pressure according to the control signals sent from the controller U 1  to the proportional solenoids so 1  to so 11  (electric current values supplied to the proportional solenoids so 1  to so 11 ), the control valves V 1  to V 11  are pilot-operated so that the directions and flow rates of the hydraulic fluid are controlled with respect to the hydraulic actuators ML, MR, MT, and C 1  to C 7  which are to be controlled. That is, each of the control valves V 1  to V 11  is pilot-operated by the pilot control pressure controlled according to a control signal sent from the controller U 1 . In other words, each of the control valves V 1  to V 11  is controlled according to electric current values supplied by the controller U 1 . 
     As shown in  FIG. 4 , the controller U 1  is connected to operation members  41  (first operation tool  41 A to fifth operation tool  41 E) for operating the respective control valves V 1  to V 9 . The controller U 1  supplies (sends) electric current values (control signals), according to operation amounts of the operation members  41 , to the proportional solenoids so 1  to so 9  of the control valves V 1  to V 9  which are to be operated. 
     The first operation tool  41 A and the second operation tool  41 B are provided in the steering device  1 B, and are constituted, for example, of hands that is handled and operated by an operator sitting on the driver&#39;s seat  6 . The first operation tool  41 A includes a sensor  42  (first sensor  42 A) for detecting an operational direction and an operation amount of the first operation tool  41 A. The first sensor  42 A is connected to the controller U 1 . The second operation tool  41 B includes a sensor  42  (second sensor  42 B) for detecting an operational direction and an operation amount of the second operation tool  41 B. The second sensor  42 B is connected to the controller U 1 . 
     As shown in  FIG. 5 , the first operation tool  41 A and the second operation tool  41 B are arranged side by side, for example, in the machine width direction K 2  (left and right). The first operation tool  41 A is an operation member (a left handle) that is handled by an operator with his/her left hand. The second operation tool  41 B is an operation member (a right handle) that is handled by the operator with his/her right hand. 
     As shown in  FIG. 5 , each of the first operation tool  41 A and the second operation tool  41  includes, in the middle portion thereof in the vertical direction, a gripping portion  32  to be handled (with his palm) by an operator, and a lever portion  33  projecting upward from the gripping portion  32 . The first operation tool  41 A includes a first switch  34 A, a second switch  35 A, and a third switch  36 A which are disposed on the lever portion  33  thereof. The second operation tool  41 B includes a first switch  34 B, a second switch  35 B, a third switch  35 B, and a fourth switch  37  which are disposed on the lever portion  33  thereof. 
     The first switch  34 A and the first switch  34 B are each disposed on an upper back surface of the lever portion  33 , and are each constituted, for example, of a slide switch to be operated slidably left and right. Each of the first switch  34 A and the first switch  34 B can be operated with a thumb. Each of the first switch  34 A and the first switch  34 B may be a switch to be operated swingably left and right, for example, may be a seesaw switch. 
     The second switch  35 A and the second switch  35 B are each disposed on a front portion of the lever portion  33 . Each of the second switch  35 A and the second switch  35 B may be a switch to be pressed by an index finger, a middle finger, or the like, e.g., a trigger switch. 
     Each of the third switch  36 A and the third switch  36 B is disposed below each of the first switches  34 A and  34 B disposed on the back surface of the lever portion  33 , and is constituted, for example, of a push-button switch (SW 1 ). 
     The fourth switch  37  is disposed below the first switch  34 B disposed on the back surface of the lever portion  33  of the second operation tool  41 B, and is constituted, for example, of a push-button switch (SW 2 ). 
     As shown in  FIG. 4 , the first switches  34 A and  34 B, the second switches  35 A and  35 B, the third switches  36 A and  36 B, and the fourth switch  37  are connected to the controller U 1 . The controller U 1  is configured to obtain command signals sent from the first switches  34 A and  34 B, the second switches  35 A and  35 B, the third switches  36 A and  36 B, and the fourth switch  37 . 
     The first SP control valve V 10  can be operated (the first attachment actuator C 6  can be operated) by one of the first switch  34 A and the first switch  34 B, and the second SP control valve V 11  can be operated (the second attachment actuator C 7  can be operated) by the other switch. In addition, the swing control valve V 9  (swing bracket  14 ) can be selectively operated by the first switch  34 A. 
     That is, the first switch  34 A and the first switch  34 B are operation members for operating the first SP control valve V 10 , the second SP control valve V 11 , and the swing control valve V 9 . 
     As shown in  FIG. 5 , the first and second operation tools  41 A and  41 B are each operable to be tilted forward and backward (back and forth), and to be tilted leftward and rightward (left and right). By tilting each of the first operation tool  41 A and the second operation tool  41 B back and forth and left and right, two operation targets provided in the swivel working machine  1  can be operated. Specifically, the first operation tool  41 A and the second operation tool  41 B are operable to operate the working tool control valve V 1 , the boom control valve V 2 , the arm control valve V 7 , the swivel control valve V 8 , and the swing control valve V 9 . As for the swivel control valve V 8  and the swing control valve V 9 , either one of them can be operated selectively. 
     Based on the detection signals from the first sensor  42 A and the second sensor  42 B, the controller U 1  controls the working tool control valve V 1  (swing movement in which the working tool  17  swings), the boom control valve V 2  (swing movement in which the boom  15  swings), the arm control valve V 7  (swing movement in which the arm  16  swings), the swivel control valve V 8  (swivel movement in which the machine body  2  swivels), and the swing control valve V 9  (swing movement in which the working device  4  swings). 
     The third operation tool  41 C is provided on the steering device  1 B, and is, for example, a lever. The third operation tool  41 C is operable to operate the first dozer control valve V 3  and the second dozer control valve V 6  (for the dozer cylinder C 1 ), (operate the dozer  7 ). In addition, the third operation tool  41 C has a sensor  42  (a third sensor  42 C) for detecting an operational direction and an operation amount of the third operation tool  41 C. The third sensor  42 C is connected to the controller U 1 . Based on the detection signal from the third sensor  42 C, the controller U 1  controls the first dozer control valve V 3  and the second dozer control valve V 6  (for the dozer  7 ). 
     The fourth operation tool  41 D and the fifth operation tool  41 E are provided, for example, on a floor portion in front of the driver&#39;s seat  6 , and are constituted of a pedal to be operated by a foot of an operator. 
     The fourth operation tool  41 D is operable to operate the first traveling control valve V 5  (for the first traveling motor ML), (to operate the first traveling device  3 L). In addition, the fourth operation tool  41 D has the sensor  42  (a fourth sensor  42 D) for detecting an operational direction and an operation amount of the fourth operation tool  41 D. The fourth sensor  42 D is connected to the controller U 1 . The controller U 1  controls the first traveling control valve V 5  (for the first traveling device  3 L) based on the detection signal from the fourth sensor  42 D. 
     The fifth operation tool  41 E is operable to operate the second traveling control valve V 4  (for the second traveling motor MR), (to operate the second traveling motor  3 R). In addition, the fifth operation tool  41 E has the sensor  42  (a fifth sensor  42 E) for detecting an operational direction and an operation amount of the fifth operation tool  41 E. The fifth sensor  42 E is connected to the controller U 1 . The controller U 1  controls the second traveling control valve V 4  (for the second traveling device  3 R) based on the detection signal from the fifth sensor  42 E. 
     The configurations of the sensors  42  (the first sensor  42 A to fifth sensor  42 E) are not particularly limited. For example, potentiometers can be adopted as the sensors  42 . 
     Spools of the respective control valves V 1  to V 11  are moved in proportion to the operation amounts of the respective control members  41 ,  34 A, and  34 B of the respective control valves V 1  to V 11 , and supply hydraulic fluid to the hydraulic actuators ML, MR, MT, C 1  to C 7  in proportion to movement degrees of the respective control valves V 1  to V 11 . That is, a movement speed of each operation target (control target) can be changed in proportion to each of operation amounts of the respective operation members  41 ,  34 A, and  34 B. 
     As described above, the control valves V 1  to V 11  are each operated by operation of each of the operation members  41 ,  34 A, and  34 B, thereby controlling the corresponding one of the hydraulic actuators ML, MR, MT, and C 1  to C 7 . Then, each of the hydraulic actuators ML, MR, MT, and C 1  to C 6  drives the corresponding driver (the machine body  2 , the traveling device  3 , the dozer device  7 , the boom  15 , the arm  16 , the working tool  17 , the first hydraulic attachment AUX 1 , or the second hydraulic attachment AUX 2 ). 
     Next, referring to  FIG. 6 , an example of operation patterns in each of which the first operation tool  41 A and the second operation tool  41 B are tilted back and forth, left and right, will be explained. 
     As shown in  FIG. 6 , there are a plurality of operation patterns about tilting of the first and second operation tools  41 A and  41 B. In the embodiment, as shown in  FIG. 6 , four operation patterns (first to fourth operation patterns) are provided as the plurality of operation patterns from which one can be selected as a present operation pattern of the first and second operation tools  41 A and  41 B. 
     As shown in  FIG. 6 , in the first operation pattern, the arm  16  is swung by back-and-forth tilting of the first operation tool  41 A, and the machine body  2  is swiveled by left-and-right tilting of the first operation tool  41 A. Meanwhile, the boom  15  is swung by back-and-forth tilting of the second operation tool  41 B, and the bucket  17  is swung by left-and-right tilting of the second operation tool  41 B. 
     In the second operation pattern, the boom  15  is swung by the back-and-forth tilting of the first operation tool  41 A, and the bucket  17  is swung by the left-and-right tilting of the first operation tool  41 A. Meanwhile, the arm  16  is swung by the back-and-forth tilting of the second operation tool  41 B, and the machine body  2  is swiveled the left and right tilting operations of the second operation tool  41 B. 
     In the third operation pattern, the arm  16  is swung by the back-and-forth tilting of the first operation tool  41 A, and the working device  4  (swing bracket  14 ) is swung by the left-and-right tilting of the first operation tool  41 A. Meanwhile, the boom  15  is swung by the back-and-forth tilting of the second operation tool  41 B, and the bucket  17  is swung by the left-and-right tilting of the second operation tool  41 B. 
     In the fourth operation pattern, the boom  15  is swung by the back-and-forth tilting of the first operation tool  41 A, and the bucket  17  is swung by the left-and-right tilting of the first operation tool  41 A. Meanwhile, the arm  16  is swung by the back-and-forth tilting of the second operation tool  41 B, and the working device  4  (swing bracket  14 ) is swung by the left-and-right tilting of the second operation tool  41 B. 
     As shown in  FIG. 4 , the controller U 1  includes an operation pattern shifting unit Ub. In addition, a pattern shifting member (4P_SW)  40 , which instructs the shifting of the operation pattern, is connected to the controller U 1 . The controller U 1  is configured to obtain, from the pattern shifting member  40 , a shifting signal to shift the operation pattern. When the controller U 1  obtains the shifting signal sent from the pattern shifting member  40 , the operation pattern shifting unit Ub determines, as the selected operation pattern, one of the first operation pattern to the fourth operation pattern. 
     As shown in  FIG. 7 , the pattern shifting member  40  is a manually operable switch that is handled and operated by an operator. Specifically, the pattern shifting member  40  is a rotary switch (a switch), and is pivotally attached to the base plate  45 . In addition, the pattern shifting member  40  includes an indicator  40 A. On the base plate  45 , first to fourth marks  43 A to  43 D are arranged peripherally around the pattern shifting member  40 . The operation pattern can be shifted by rotating the pattern shifting member  40  to align the indicator  40 A with any of the first mark  43 A to fourth mark  43 D. For example, when the indicator  40 A is aligned with the first mark  43 A, the operation pattern shifting unit Ub shifts the operation pattern to the first operation pattern. When the indicator  40 A is aligned with the second mark  43 B, the operation pattern shifting unit Ub shifts the operation pattern to the second operation pattern. When the indicator  40 A is aligned with the third mark  43 C, the operation pattern shifting unit Ub shifts the operation pattern to the third operation pattern. When the indicator  40 A is aligned with the fourth mark  43 D, the operation pattern shifting unit Ub shifts the operation pattern to the fourth operation pattern. 
     The pattern shifting member  40  may be a meter (a monitor) connected to the controller U 1 , and the operating pattern may be shifted on a screen of the meter. 
     In  FIG. 6 , comparing the first operation pattern to the third operation pattern, the swivel movement, which is a swiveling movement of the machine body  2 , is performed in the first operation pattern by operating the first operation tool  41 A in the machine width direction K 2  (in a specific direction D 5 ). In the third operation pattern, the swing movement, which is a swinging movement of the working device  4 , is performed by operating the first operation tool  41 A in the machine width direction K 2  (in the specific direction D 5 ). 
     That is, the pattern shifting member  40  (the operation pattern shifting unit Ub) is operated to select either a swivel operation state in which the operation of the first operation tool  41 A (the operation member  41 ) in the specific direction D 5  causes the swivel movement or a swing operation state in which the operation of the first operation tool  41 A (the operation member  41 ) in the specific direction D 5  causes the swing movement. 
     In addition, comparing the second operation pattern to the fourth operation pattern, the swivel movement is performed in the second operation pattern by operating the second operation tool  41 B in the machine width direction K 2  (in the specific direction D 5 ). In the fourth operation pattern, the swing movement is performed by operating the second operation tool  41 B in the machine width direction K 2  (in the specific direction D 5 ). 
     That is, the pattern shifting member  40  (the operation pattern shifting unit Ub) is operated to select either the swivel operation state in which the operation of the second operation tool  41 B (the operation member  41 ) in the specific direction D 5  causes the swivel movement or the swing operation state in which the operation of the second operation tool  41 B (the operation member  41 ) in the specific direction D 5  causes the swing movement. 
     As described above, in the embodiment, the operation pattern can be shifted between the swivel operation state in which the machine body  2  is operated as performance of the swivel movement and the swing operation state in which the working device is operated as performance of the swing movement. 
     There is a working machine called a TLB, in which a front loader is attached to the front portion of the tractor and a backhoe is attached to the rear portion of the tractor. In the TLB, the working device on the backhoe can generally be operated in the swing movement by an operation member handled and operated by an operator. In a case when the operator who is accustomed to riding this TLB uses the swivel working machine  1 , the working device  4  can be swung through operation of the operation member handled and operated by the operator when the operation pattern is shifted to the third operation pattern or the fourth operation pattern. 
     In addition, since the pattern shifting member  40  is constituted of a manual switch such as a rotary switch, it can be easily determined which one is selected, the swivel movement in which the machine body  2  is swiveled through a swing operation of the operation member  41  to be handled and operated by the operator or the swing movement in which the working device  4  is swung through the swing operation of the operation member  41  to be handled and operated by the operator. In addition, it is possible to instantly confirm whether the movement is in the swivel operation state or the swing operation state. 
     The specific direction D 5  that is an operational direction for selectively causing either the swivel movement or the swing movement does not have to be the machine width direction K 2 . It may be the fore-and-aft direction K 1 . For example, as shown in  FIG. 8 , in the second operation pattern, the machine body  2  may be swiveled by back-and-forth tilting of the first operation tool  41 A, and the arm  16  may be swung by left-and-right tilting of the first operation tool  41 A. In the fourth operation pattern, the working device  4  may be swung by back-and-forth tilting of the first operation tool  41 A, and the arm  16  may be swung by left-and-right tilting operations of the first operation tool  41 A. Alternatively, another operation pattern may be adopted. 
     As shown in a table in  FIG. 9 , the swivel working machine  1  according to the embodiment can selectively have a first configuration, a second configuration, or a third configuration. 
     In the first configuration, the first hydraulic attachment AUX 1  is operated by operating the first switch  34 B (the slide switch) on the second operation tool  41 B (the right handle), and the second hydraulic attachment AUX 2  is operated by operating the first switch  34 A (the slide switch) on the first operation tool  41 A (the left handle). In addition, in the first configuration, the third switch  36 B (SW 1 ) on the second operation tool  41 B (the right handle) can be pressed to sound a horn, and the third switch  36 A (SW 1 ) on the first operation tool  41 A (the left handle) can be pressed to release the dumping movement (to cancel restriction of the movement of the arm  16  in the arm dumping direction D 2 ). In addition, the fourth switch  37  (SW 2 ) on the second operation tool  41 B (the right handle) can be pressed to allow the hydraulic attachment AUX to be activated. In addition, the second switch  35 B (the trigger switch) on the second operation tool  41 B (the right handle) can be operated to lock the operation of the hydraulic attachment AUX. Furthermore, in the first configuration, the swinging movement of the working device  4  is performed by operating a pedal additionally provided on the floor portion in front of the driver&#39;s seat  6 . In addition, in the first configuration, it is impossible to shift between the swivel movement of the machine body  2  and the swing movement of the working device  4 , the pattern shifting member (4P_SW)  40  is not provided, and only one operation pattern (for example, the first operation pattern) is employed. 
     In the second configuration, the first hydraulic attachment AUX 1  is operated by operating the first switch  34 B (the slide switch) on the second operation tool  41 B (the right handle), and either the second hydraulic attachment AUX 2  or the swing cylinder C 2  is selectively operated by operating the first switch  34 A (the slide switch) on the first operation tool  41 A (the left handle). In addition, in the second configuration, the third switch  36 B (SW 1 ) on the second operation tool  41 B (the right handle) can be pressed to sound a horn, and the third switch  36 A (SW 1 ) on the first operation tool  41 A (the left handle) can be pressed to release the dumping movement. In addition, the fourth switch  37  (SW 2 ) on the second operation tool  41 B (the right handle) can be pressed to allow the hydraulic attachment AUX to be activated. In addition, the second switch  35 B (the trigger switch) on the second operation tool  41 B (the right handle) can be operated to lock the operation of the hydraulic attachment AUX, and the second switch  35 A (the trigger switch) on the first operation tool  41 A (the left handle) can be operated to shift an operation mode between an attachment operation mode and a swing operation mode. The attachment operation mode is a mode to allow the second hydraulic attachment AUX 2  (hydraulic attachment AUX) to be operated by operating the first switch  34 A (the slide switch) on the first operation tool  41 A (the left handle). The swing operation mode is a mode to allow the working device  4  to be swung by operating the first switch  34  (the slide switch) on the first operation tool  41 A (the left handle). Furthermore, in the second configuration, the swinging movement of the working device  4  is performed by operating the first switch  34  (the slide switch) on the operation tool  41 A (the left handle) with an operator&#39;s hand, and a pedal for the swing operation of the working device  4  is not provided. In addition, the pattern shifting member (4P_SW)  40  is not provided, and only one operation pattern (for example, the first operation pattern) is employed. 
     In the third configuration, the second hydraulic attachment AUX 2  is operated by operating the first switch  34 B (the slide switch) on the second operation tool  41 B (the right handle), and either the first hydraulic attachment AUX 1  or the swing cylinder C 2  is selectively operated by operating the first switch  34 A (the slide switch) on the first operation tool  41 A (the left handle). In the third configuration, for example, a thumb (attachment) serves as the second hydraulic attachment AUX 2  to be operated by the first switch  34 B (the slide switch) on the second operation tool  41 B (the right handle). The thumb is a hydraulic attachment that is attached to the tip portion of the arm  16  together with the bucket  17  and works together with the bucket  17  to clamp an object to be clamped, such as wood. In the third configuration, the third switch  36 B (SW 1 ) on the second operation tool  41 B (the right handle) can be pressed to sound a horn, and the third switch  36 A (SW 1 ) on the first operation tool  41 A (the left handle) can be pressed to release the dumping movement. In addition, the fourth switch  37  (SW 2 ) on the second operation tool  41 B (the right handle) can be pressed to allow the hydraulic attachment AUX to be activated. In addition, the second switch  35 B (the trigger switch) on the second operation tool  41 B (the right handle) can be operated to lock the operation of the hydraulic attachment AUX. The second switch  35 A (the trigger switch) of the first operation tool  41 A (the left handle) can be operated to shift the operation mode between the attachment operation mode and either the swing operation mode or the swivel operation mode. The swivel operation mode is a mode in which the first switch  34 A (the slide switch) on the first operation tool  41 A (the left handle) is used to swivel the machine body  2 . 
     In this third configuration, in the attachment operation mode, the first hydraulic attachment AUX 1  (hydraulic attachment AUX) is operated by operating the first switch  34 A (the slide switch) on the first operation tool  41 A (the left handle). Furthermore, in the third configuration, a pedal for the swing operation of the working device  4  is not provided. In addition, in the third configuration, the pattern shifting member (4P_SW)  40  is provided. That is, in the third configuration, the operation pattern of the first operation tool  41 A (the left handle) and the second operation tool  41 B (the right handle) can be selected from the plurality of operation patterns (four patterns in the embodiment). 
     In the third configuration, when the operation pattern shifting unit Ub shifts the operation state to the swivel operation state (the first operation pattern or the second operation pattern), the second switch  35  can be used to shift the operation mode between the attachment operation mode and the swing operation mode. In addition, when the operation pattern shifting unit Ub shifts the operation state to the swing operation state (the third operation pattern or the fourth operation pattern), the second switch  35  can be used to shift the operation mode between the attachment operation mode and the swivel operation mode. 
     In addition, in the third configuration, when the operation pattern shifting unit Ub shifts the operation state to the swivel operation state, and when the second switch  35 A (the trigger switch) on the first operation tool  41 A (the left handle) is operated to shift the operation mode to the swing operation mode, it is possible to simultaneously perform the swing operation and the swivel operation by operating (handling) the operation member  41  handled by an operator. 
     In the second configuration, when the second switch  35 A (the trigger switch) on the first operation tool  41 A (the left handle) is operated to shift the operation mode to the swing operation mode, it is possible to simultaneously perform the swing operation and the swivel operation by operating (handling) the operation member  41  handled by an operator. 
     The swivel working machine  1  according to the embodiment can have one selected from two configurations: one configuration (the second configuration) in which it is impossible to shift the operation pattern from the swing operation state and further it is possible to shift the operation mode between the attachment operation mode and the swing operation mode, and another configuration (the third configuration) in which it is possible to shift the operation state between the swivel operation state and the swing operation state and further it is possible to shift the operation mode between the attachment operation mode and the swing operation mode. 
     In the embodiment, an operation method to cause the swinging movement of the working device  4  (the swing bracket  14 ) corresponds to one selected from three operation patterns: the pedal operation in the first configuration, the volume operation using the slide switch in the second configuration, and of the tilting of the operation member  41  in the third configuration. 
     As shown in  FIG. 4 , the swivel working machine  1  includes an information unit  44  that informs an operator that the swivel working machine  1  is in the swing operation mode. The informing unit  44  is connected to the controller U 1 . The information unit  44  is located in the vicinity of the operator&#39;s seat  6 , and is constituted of a meter (monitor), an indicator, or the like. 
     In the above-described embodiment, each of the control valves V 1  to V 11  is constituted of a pilot-type proportional solenoid valve, and the controller U 1  controls an electric current value supplied to each of the control valves V 1  to V 11  to control each of the control valves V 1  to V 11 . However, a configuration of the swivel working machine  1  is not limited to this configuration. 
     For example, as shown in  FIG. 10 , each of the control valves V 1  to V 11  is constituted of a pilot-operated switching valve that is pilot-operated by pilot control pressures acting on a pair of pilot-pressure receiving portions Va 1  and Va 2 , and a pair of proportional solenoid valves V 21  and V 22  to be controlled by the controller U 1  are provided, so that a pilot control pressure is supplied from the proportional solenoid valve V 21  on one side to the pilot pressure receiving portion Va 1  on one side, and a pilot control pressure is supplied from the proportional solenoid valve V 22  on the other side to the pilot pressure receiving portion Va 2  on the other side. In this configuration, a flow direction and a flow rate of the hydraulic fluid to the hydraulic actuators MT, ML, MR, C 1  to C 7  may be controlled. 
     In addition, as shown in  FIG. 11 , each of the control valves V 1  to V 11  may be constituted of a proportional-solenoid-type directional and flow control valve in which a spool is directly driven by a proportional solenoid so 12  to which an electric current is supplied from the control unit U. 
     The swivel working machine  1  includes the machine body  2  swivelable around the swivel axis X 1 , the working device  4  attached to the machine body  2  swingably around the swing axis X 2 , the operation member  41  to be handled and operated by an operator, and the controller U 1  to control the swivel movement, which is a swiveling movement of the machine body  2 , and the swing movement, which is a swinging movement of the working device  4 . The controller U 1  includes the operation pattern shifting unit Ub configured or programmed to perform shifting between the swivel operation state where operation of the operation member  41  in a specific direction D 5  causes the swivel movement and the swing operation state where the operation of the operation member  41  in the specific direction D 5  causes the swing movement. 
     According to this configuration, an operation state is shifted between the swivel operation state in which the swivel movement is performed by operating, in the specific direction D 5 , the operation member  41  to be handled and operated by an operator and the swivel operation state in which the swing movement is performed by operating the operation member  41  in the specific direction D 5 . This allows the working device  4  to be swung by operating the operation member  41  to be handled and operated by the operator. 
     Also, the swivel working machine  1  includes the pattern shifting member  40  operated to shift the operation pattern of the operation member  41 . The controller U 1  obtains a shifting signal for shifting the operation pattern transmitted from the pattern shifting member  40 , the operation pattern shifting unit Ub shifts the operation pattern between the swivel operation state and the swing operation state. 
     According to this configuration, the operator can switch the operation state between the swivel operation state and the swing operation state. 
     Also, a manually operable switch to be handled and operated by the operator serves as the pattern shifting member  40 . 
     According to this configuration, the operation pattern of the operation member  41  can be easily shifted, and it can be easily confirmed which operation state is selected as the operation pattern. 
     Also, the swivel working machine includes the hydraulic attachment AUX attached to the working device  4 , the first switch  34 A to operate the hydraulic attachment AUX, and the second switch  35 A to select either the attachment operation mode where operation of the first switch  34  causes operation of the hydraulic attachment AUX or the swing operation mode where operation of the first switch  34  causes the swing movement. 
     According to this configuration, while the swivel operation state is selected as the operation pattern, the swing movement can be performed by operating the first switch  34 A. 
     Also, when the operation pattern shifting unit Ub selects the swivel operation state, the second switch  35 A enables the first switch  34 A to be operated selectively in either the attachment operation mode or the swing operation mode, and when the operation pattern shifting unit Ub selects the swing operation state, the second switch  35 A enables the first switch  34 A to be operated selectively in either the attachment operation mode or the swivel operation mode where operation of the first switch  34  causes the swivel movement. 
     According to this configuration, it is possible to prevent duplication of the swing or swivel operation by the operation member  41  and the swing or swivel operation by the first switch  34 A. 
     Also, the swivel working machine includes the information unit  44  to inform that the swing operation mode is selected. 
     According to this configuration, the operator can be informed that the machine is in the swing operation mode. 
     Also, the swivel working machine  1  is capable of having a configuration (the second configuration) in which shifting from the swing operation state is not allowed and the shifting between the attachment operation mode and the swing operation mode is allowed, and the swivel working machine  1  is capable of having another configuration (the third configuration) in which the shifting between the swivel operation state and the swing operation state is allowed and the shifting between the attachment operation mode and either the swing operation mode or the swivel operation mode is allowed. 
     According to this configuration, the swivel working machine  1  can have either one of the prepared configurations in correspondence to a region where the swivel working machine  1  is used. 
     While preferred embodiments of the present invention have been described above, it is to be understood that variations and modifications will be apparent to those skilled in the art without departing from the scope and spirit of the present invention. The scope of the present invention, therefore, is to be determined solely by the following claims.