Abstract:
The purpose of the present invention is to provide a display device for work machines that is capable of obtaining, when required, information required for the operation of a work machine or a work device, without being conscious of the information acquisition. A display device for a combine being a work machine capable of interruption display of any information on a display screen and wherein display of information in relation to the combine or a harvesting unit or threshing unit, etc. being work devices provided in the combine, occurs via an interruption display screen being one embodiment of interruption display, when a prescribed operation happens in relation to the combine, the harvesting unit, or the threshing unit, etc.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
       [0001]    This is the U.S. national stage of application No. PCT/JP2014/054275, filed on Feb. 24, 2014. Priority under 35 U.S.C. §119(a) and 35 U.S.C. §365(b) is claimed from Japanese Application No. 2013-050742, filed Mar. 13, 2013, the disclosure of which is also incorporated herein by reference. 
     
    
     TECHNICAL FIELD 
       [0002]    The present invention relates to a display device for work machines. 
       BACKGROUND ART 
       [0003]    Conventionally, a display device for displaying operation state of a work machine such as a combine is known. Not only traveling speed of the work machine, engine rotation speed, engine load rate and work state of the work machine but also various alarms are displayed. For example, concerning a hydraulic shovel, a display device is known which displays interruptively predetermined warning logo in a liquid crystal display device (display part) provided in a seat so as to remind an operator to be careful. For example, an art of the Patent Literature 1 is so. 
         [0004]    However, in the display device of the Patent Literature 1, when posture of a work machine is adjusted or setting of a work device provided in the work machine is changed, the posture of the work machine or an actual set value of the work device is not displayed interruptively. Accordingly, for adjusting the posture of the work machine or changing the setting of the work device, operation for displaying the actual set value is required separately, whereby the operation of the work machine and the work device may be complicated. 
       PRIOR ART REFERENCE 
     Patent Literature 
       [0005]    Patent Literature 1: the Japanese Patent Laid Open Gazette 2011-231488 
       DISCLOSURE OF INVENTION 
     Problems to Be Solved by the Invention 
       [0006]    The present invention is provided for solving the above problem, and the purpose of the present invention is to provide a display device for a work machine in which information required for operating the work machine or a work device can be obtained when required without being conscious of obtain of the information. 
       Means for Solving the Problems 
       [0007]    The problems to be solved by the present invention have been described above, and subsequently, the means of solving the problems will be described below. 
         [0008]    According to the present invention, in a display device of a work machine in which optional information can be displayed interruptively on a display screen, when predetermined operation concerning the work machine or a work device provided in the work machine is performed, information about the work machine or the work device is displayed interruptively. 
         [0009]    According to the present invention, adjustment of posture of the work machine or operation of the work device is set to be the predetermined operation, and information of setting of the posture of the work machine or information of setting of the work device is displayed interruptively. 
       Effect of the Invention 
       [0010]    The present invention brings the following effects. 
         [0011]    According to the present invention, following predetermined operation, information required for the operation is displayed interruptively. Accordingly, at the time of operation of the work machine or the work device, required information can be obtained when required without being conscious of obtain of the information. 
         [0012]    According to the present invention, information required for the adjustment of the posture of the work machine or the operation of the work device is displayed interruptively. Accordingly, at the time of operation of the work machine or the work device, required information can be obtained when required without being conscious of obtain of the information. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0013]      FIG. 1  is a side view of a combine which is a work machine of an embodiment according to the present invention. 
           [0014]      FIG. 2  is a block diagram of a control configuration of the combine which is the work machine of the embodiment according to the present invention. 
           [0015]      FIG. 3A  is a drawing of a configuration of a display screen of a display device of the combine which is the work machine of the embodiment according to the present invention.  FIG. 3B  is a drawing of a state in which an interruption display screen is displayed in the display screen of the display device of the combine which is the work machine of the embodiment according to the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0016]    Firstly, a combine having a display device  27  which is an embodiment of the present invention is explained referring to  FIGS. 1 and 2 . A work machine having the display device  27  is not limited to this embodiment and may be a work machine such as a tractor or a backhoe. 
         [0017]    As shown in  FIGS. 1 and 2 , in a combine  1 , a traveling part  2 , a harvesting part  5  which is the work machine, a threshing part  9 , a selection part  10 , a grain storage part  11 , an operation part  14  and the like are provided on a body frame  3 . 
         [0018]    The traveling part  2  makes a machine body travel forward or rearward. The traveling part  2  is provided below the body frame  3 . The traveling part  2  is configured by a crawler traveling device  4  having a pair of left and right crawlers. In the traveling part  2 , a traveling speed sensor  20  detecting a traveling speed of the machine body is provided (see  FIG. 2 ). 
         [0019]    The harvesting part  5  harvests grain culms on the field. The harvesting part  5  is provided at a front end of the body frame  3  (in a front part of machine body) so as to be movable vertically. The harvesting part  5  raises the grain culms on the field with a raising device  6 , cuts plant foot of the grain culms after raised with a cutting device  7 , and conveys the grain culms after cut toward the threshing part  9  with a cutting device  8 . 
         [0020]    The threshing part  9  threshes the grain culms. The threshing part  9  is provided in a left front part of the body frame  3  and behind the harvesting part  5 . The threshing part  9  receives the grain culms conveyed from the harvesting part  5 , threshes the conveyed grain culms with a threshing cylinder and the like, and drops the threshed object to the selection part  10 . In the threshing part  9 , a threshing part load sensor  24  detecting load of the threshing part  9  is provided (see  FIG. 2 ). 
         [0021]    The selection part  10  sorts out the threshed object to grains and waste straw. The selection part  10  is provided in a left part of the body frame  3  and below the threshing part  9 . The selection part  10  sorts out the threshed object dropped from the threshing part  9  to grains, grains in ear, unthreshed grains, waste straw, dust and like by shaking sorting with a shaking sorting device and wind sorting. Then, the selection part  10  conveys the sorted grains to the grain storage part  11 , conveys the grains in ear and the unthreshed grains to the threshing part  9 , and discharges the waste straw and the dust to the outside. In the selection part  10 , a selection part load sensor  25  detecting load of the selection part  10  is provided (see  FIG. 2 ). 
         [0022]    The grain storage part  11  stores the threshed and sorted grains. The grain storage part  11  is provided in a right rear part of the body frame  3  and at the right of the threshing part  9  and the selection part  10 . The grain storage part  11  includes a grain tank  12 , a grain discharging device  13  and the like. The grain storage part  11  stores the grains conveyed from the selection part  10  in the grain tank  12 , and discharges the grains stored in the grain tank  12  outside the machine body with the grain discharging device  13 . In the grain tank  12 , a weight sensor  23  detecting a grain storage amount is provided (see  FIG. 2 ). 
         [0023]    In the operation part  14 , an operator operates the combine  1 . The operation part  14  is provided in a right front part of the body frame  3  and at the right of the harvesting part  5 . In the operation part  14 , inside a cabin  15 , an operation instrument  17  operating the combine  1  and the display device  27  (see  FIG. 2 ) are arranged around a seat  16 . The operation instrument  17  includes operation instruments adjusting a lateral height and longitudinal height of the combine  1  and operation instruments operating various work devices such as the harvesting part  5  and the threshing part  9 . In the operation instrument  17 , an operation amount detection sensor  17   a  detecting operation amounts of the operation instruments is provided. An ECU  19  (see  FIG. 2 ) controlling an engine  18  and the work devices by a signal from the operation amount detection sensor  17   a  is provided. 
         [0024]    As shown in  FIG. 2 , the ECU  19  controls the engine  18  and the work devices. In the ECU  19 , various programs are stored so as to control the engine  18  and the work devices. The ECU  19  can perform predetermined calculation according to the programs and can store results of the calculation. Substantially, the ECU  19  may be configured by connecting a CPU, a ROM, a RAM, a HDD and the like with a bus, or may alternatively be a one-chip LSI or the like. 
         [0025]    The ECU  19  is connected to the traveling speed sensor  20  of the machine body and a rotation speed sensor  21  of the engine  18  and can obtain a traveling speed and a rotation speed of the engine  18  detected by the traveling speed sensor  20  and the rotation speed sensor  21 . 
         [0026]    The ECU  19  is connected to a fuel residual amount meter  22  and can obtain a fuel residual amount of a fuel tank (not shown) detected by the fuel residual amount meter  22 . 
         [0027]    The ECU  19  is connected to the weight sensor  23  of the grain tank  12  and can obtain a signal from the weight sensor  23  of the grain tank  12 . Though the weight sensor  23  detects a content quantity of the grain tank  12  in this embodiment, the detection means is not limited thereto and any member which can detect the content quantity may be used. 
         [0028]    The ECU  19  is connected to the threshing part load sensor  24  and the selection part load sensor  25 , and can obtain signals from the threshing part load sensor  24  and the selection part load sensor  25 . 
         [0029]    The ECU  19  is connected to a transmission  26  and can obtain a signal from the transmission  26 . 
         [0030]    The ECU  19  is connected to the engine  18  (various sensors and a fuel injection device (not shown) provided in the engine  18 ), and can obtain signals from the sensors and control the engine  18 . 
         [0031]    The ECU  19  is connected to a control device  29  of the display device  27  and can obtain signals from the control device  29 . 
         [0032]    The ECU  19  is connected to the operation amount detection sensor  17   a  and can obtain a signal from the operation amount detection sensor  17   a.    
         [0033]    In the combine  1 , by operation of the operation instruments in the operation part  14 , power of the engine  18  is transmitted to the work devices, and while the machine body is made travel with the traveling part  2 , the harvesting part  5  harvests grain culms on the field, the threshing part  9  threshes the grain culms from the harvesting part  5 , the selection part  10  sorts out the threshed object from the threshing part  9 , and the grain storage part  11  stores the grains from the selection part  10  and simultaneously discharges the waste straw from the threshing part  9  to the outside. 
         [0034]    Next, the display device  27  is explained concretely referring to  FIGS. 2 and 3 . 
         [0035]    As shown in  FIG. 2 , the display device  27  displays various kind of information concerning the combine  1 . The display device  27  includes a liquid crystal display  28  and the control device  29 . The liquid crystal display  28  is arranged so that an operator sitting on the seat  16  of the operation part  14  can look and operate the liquid crystal display  28  (see  FIG. 1 ). The display device  27  can display graphics corresponding to signals transmitted from the control device  29 . 
         [0036]    As shown in  FIG. 3 , the liquid crystal display  28  displays characters and graphics corresponding to transmitted signals and signals are inputted thereby. The liquid crystal display  28  may be configured by a touch panel which displays characters and graphics and to which signals can be inputted by touching a screen. The liquid crystal display  28  can display a traveling speed, a rotation speed of the engine  18 , a grain storage amount, a fuel residual amount, a threshing part load, a selection part load, an operation time, speed change indication, and various alarms. The characters and graphics displayed on a display screen  30  of the liquid crystal display  28  are not limited to those of this embodiment. 
         [0037]    At a substantially center of the display screen  30  of the liquid crystal display  28 , a traveling speed meter  31  which displays a traveling speed with a numerical value is arranged. In the display screen  30 , above the traveling speed meter  31 , a rotation speed meter  32  which displays a rotation speed of the engine  18  is arranged. The rotation speed meter  32  is configured by a graphic which imitates a circular meter. 
         [0038]    In a left part of the display screen  30 , a grain content quantity meter  33  which displays a content quantity of the grain tank  12  is arranged. The grain content quantity meter  33  is configured by a graphic which imitates the grain tank  12  and has a unit scale as a standard. In a right part of the display screen  30 , a fuel residual amount meter  34  which displays a fuel residual amount is arranged. Similarly to the grain content quantity meter  33 , the fuel residual amount meter  34  is configured by a graphic which imitates a level gauge and has a unit scale as a standard. 
         [0039]    In the display screen  30 , below the traveling speed meter  31 , a threshing monitor  35  and a selection monitor  36  are arranged. The threshing monitor  35  is configured so that a predetermined area can be displayed with predetermined color. The selection monitor  36  is configured so that a predetermined area can be displayed with predetermined color. In the display screen  30 , below the threshing monitor  35  and the selection monitor  36 , an information display area  37  which displays an operation time, state of the transmission  26  and various alarms with numeral values and characters is arranged. 
         [0040]    The liquid crystal display  28  is connected to the control device  29  and can obtain signals concerning a traveling speed, a rotation speed, a grain storage amount, a fuel residual amount, a threshing part load, a selection part load, an operation time, speed change indication, and various alarms from the control device  29 . 
         [0041]    The control device  29  controls the liquid crystal display  28 . The control device  29  is configured integrally with or separately from the liquid crystal display  28  or the ECU  19 . The control device  29  stores various programs for controlling the liquid crystal display  28 . The control device  29  can perform predetermined calculation according to the programs and can store results of the calculation. Substantially, the control device  29  may be configured by connecting a CPU, a ROM, a RAM, a HDD and the like with a bus, or may alternatively be a one-chip LSI or the like. 
         [0042]    The control device  29  is connected to the ECU  19  and can obtain signals concerning a traveling speed, a rotation speed, a grain storage amount, a fuel residual amount, a threshing part load, a selection part load, an operation time, speed change indication, and various alarms from the ECU  19 . 
         [0043]    The control device  29  can display predetermined characters and graphics on the liquid crystal display  28  based on the signals concerning the traveling speed, the rotation speed, the grain storage amount, the fuel residual amount, the threshing part load, the selection part load, the operation time, the speed change indication, and the various alarms from the ECU  19 . The control device  29  can obtain various signals inputted via the liquid crystal display  28 . Namely, the control device  29  can display information concerning the combine  1  on the liquid crystal display  28  based on the signals and transmit input signals from the liquid crystal display  28  to the ECU  19 . 
         [0044]    Next, information displayed on the liquid crystal display  28  by the control device  29  of the display device  27  is explained referring to  FIGS. 2 and 3 . 
         [0045]    As shown in  FIG. 2 , when the signals concerning the traveling speed, the rotation speed, the grain storage amount, the fuel residual amount, the threshing part load, the selection part load, the operation time, the speed change indication, and the various alarms are received from the ECU  19 , the control device  29  transmits signals so as to display predetermined characters graphics on the liquid crystal display  28  based on the received signals. 
         [0046]    Concretely, as shown in  FIG. 3 , in the traveling speed meter  31  of the liquid crystal display  28 , the traveling speed is displayed with a numeral value based on the signal concerning the traveling speed from the ECU  19 . In the rotation speed meter  32  of the liquid crystal display  28 , the rotation speed is displayed by lightening up a part of scale corresponding to the signal concerning the rotation speed from the ECU  19  with predetermined color. 
         [0047]    In the grain content quantity meter  33  of the liquid crystal display  28 , the grain content quantity is displayed by lightening up a graphic in scale corresponding to the signal concerning the grain content quantity from the ECU  19  with predetermined color. In the fuel residual amount meter  34  of the liquid crystal display  28 , the fuel residual amount is displayed by lightening up a graphic in scale corresponding to the signal concerning the fuel residual amount from the ECU  19  with predetermined color. 
         [0048]    In the threshing monitor  35  of the liquid crystal display  28 , the threshing part load is displayed by lightening up a graphic in an area corresponding to the signal concerning the threshing part load from the ECU  19  with predetermined color. In the selection monitor  36  of the liquid crystal display  28 , the selection part load is displayed by lightening up a graphic in an area corresponding to the signal concerning the selection part load from the ECU  19  with predetermined color. In the information display area  37  of the liquid crystal display  28 , the predetermined information is displayed with numerical values and characters based on the signals concerning the operation time, the state of the transmission  26  and the alarms from the ECU  19 . 
         [0049]    A mode of interruption display of the display screen  30  by the control device  29  of the display device  27  is explained referring to  FIG. 3 . In this embodiment, a mode of interruption display at the time of adjusting posture of the combine  1  is explained concretely. 
         [0050]    As shown in  FIG. 3A , the control device  29  obtains the signals concerning the traveling speed, the rotation speed, the grain storage amount, the fuel residual amount, the threshing part load, the selection part load, the operation time, the speed change indication, and the various alarms via the ECU  19 . Based on the obtained signals, the control device  29  lightens up the predetermined graphics in the traveling speed meter  31 , the rotation speed meter  32 , the grain content quantity meter  33 , the fuel residual amount meter  34 , the threshing monitor  35 , the selection monitor  36  and the information display area  37  of the liquid crystal display  28 . 
         [0051]    When the operation instrument  17  concerning longitudinal posture or lateral posture is operated, a signal from the operation amount detection sensor  17   a  is transmitted to the control device  29  (see  FIG. 2 ). As shown in  FIG. 3B , when the signal from the operation amount detection sensor  17   a  is received, the control device  29  judges that the operation instrument  17  concerning longitudinal posture or lateral posture is operated, and displays interruptively an interruption display screen  38  on the display screen  30 . Vertical posture (distance from the ground surface) is treated similarly. 
         [0052]    The interruption display screen  38  is configured by a substantially rectangular screen which is smaller than the display screen. The interruption display screen  38  displays information concerning the posture of the combine  1 . Concretely, the interruption display screen  38  displays an actual set value of the longitudinal posture of the combine  1  and an actual set value of the lateral posture of the combine  1 . 
         [0053]    The control device  29  displays interruptively the interruption display screen  38  in a part of the display screen  30  in which the information not required immediately by an operator operating the combine  1  is displayed. As a concrete mode of the interruption display, the control device  29  displays the interruption display screen  38  in a part of the information display area  37  of the display screen  30  in which time and warning are displayed. At this time, the control device  29  displays the interruption display screen  38  so as to make it overlap the part of the information display area  37  in which time and warning are displayed. According to this mode of the interruption display, an operator can recognize easily that the interruption display screen  38  is displayed on the display screen  30 . The operator can obtain the information concerning the posture of the combine  1  from the interruption display screen  38  while obtaining continuously information required for operating the combine  1  from the display screen  30 . 
         [0054]    During the operation instrument  17  concerning the longitudinal posture or the lateral posture is judged to be operated according to the signal from the operation amount detection sensor  17   a,  the control device  29  displays interruptively the interruption display screen  38 . When the signal from the operation amount detection sensor  17   a  is stopped and the operation of the operation instrument  17  concerning the longitudinal posture or the lateral posture is judged to be stopped, the control device  29  cancels the interruption display screen  38  simultaneously with the stop of the operation or after the stop of the operation for a predetermined period. Namely, the control device  29  displays the time and warning of the information display area  37  again simultaneously with the stop of the operation or after the stop of the operation for the predetermined period. 
         [0055]    As another mode of the interruption display of the interruption display screen  38 , the control device  29  cancels the interruption display screen  38  after that the operation instrument  17  concerning the longitudinal posture or the lateral posture is judged to be operated according to the signal from the operation amount detection sensor  17   a  for a predetermined period. Namely, the control device  29  displays the time and warning of the information display area  37  again after start of adjustment of posture for the predetermined period. 
         [0056]    Similarly to the case mentioned above, when the operation instrument  17  concerning the working device of the combine  1  is judged to be operated according to the signal from the operation amount detection sensor  17   a  obtained via the ECU  19 , the control device  29  displays interruptively the interruption display screen  38  on the display screen  30 . At this time, the interruption display screen  38  displays an actual set value of the operated working device of the combine  1 . 
         [0057]    As the above, in the display device  27  of the combine  1  which is a work machine according to the present invention in which optional information can be displayed interruptively on the display screen  30 , when predetermined operation concerning the combine  1  or the harvesting part  5 , the threshing part  9  or the like which is the work device of the combine  1  is performed, information concerning the combine  1  or the harvesting part  5 , the threshing part  9  or the like is displayed via the interruption display screen  38  which is an embodiment of the interruption display. 
         [0058]    According to the configuration, following predetermined operation, information required for the operation is displayed interruptively. Accordingly, at the time of operation of the operation instrument  17  of the combine  1  or the harvesting part  5 , the threshing part  9  or the like, required information can be obtained when required without being conscious of obtain of the information. 
         [0059]    The operation of the operation instrument  17  which is adjustment of posture of the combine  1  or operation of the harvesting part  5 , the threshing part  9  or the like is set to be the predetermined operation, and information of setting of the posture of the combine  1  or information of setting of the harvesting part  5 , the threshing part  9  or the like is displayed via the interruption display screen  38  which is an embodiment of the interruption display. 
         [0060]    According to the configuration, the information required for the adjustment of the posture of the combine  1  or the operation of the harvesting part  5 , the threshing part  9  or the like is displayed interruptively. Accordingly, at the time of operation of the operation instrument  17  of the combine  1  or the harvesting part  5 , the threshing part  9  or the like, required information can be obtained when required without being conscious of obtain of the information. 
         [0061]    In this embodiment, the mode of the interruption display screen  38  in the case in which the adjustment of the posture of the combine  1  and the operation of the work devices are performed is explained. However, the configuration is not limited thereto and a configuration in which information which is not displayed on the actual display screen  30  of the display device  27  is displayed by transmission of signals by operating the operation instrument  17  may be used. 
       INDUSTRIAL APPLICABILITY 
       [0062]    The present invention can be used for an art of a display device for work machines.