Patent Description:
As one mode of the arrangement structure of a condenser for an air conditioner of a conventional turning working vehicle, there has been known the arrangement structure disclosed in patent literature <NUM>. That is, in the turning working vehicle disclosed in patent literature <NUM>, a turning body is mounted on a travelling part in a turnable manner, a cabin is mounted on the turning body, and an operation part is disposed in the cabin. A prime mover part is arranged at a position below and behind the operation part, and one portion of the prime mover part projects rearwardly from the lower rear wall of the cabin and covers one portion of the projecting prime mover part with a hood that can be opened and closed. Under the hood, the condenser for an air conditioner, a compressor and a receiver dryer are arranged as the air-conditioning equipment, while an air-conditioning part (an air-conditioning body) is arranged in the operation part. A cooling mechanism is configured such that the air-conditioning equipment is connected to the air-conditioning part through a refrigerant pipe.

A further turning work vehicle is disclosed in <CIT>.

However, since the condenser for an air conditioner, the compressor and the receiver dryer are arranged under the hood in the above-mentioned turning working vehicle, the hood on the turning body is increased in size by the same amount, thereby reducing the diameter of the turning radius of the turning body and becoming an obstruction.

Accordingly, it is an object of the present invention to provide a turning working vehicle which can reduce a size of a hood and, at the same time, can reduce a turning radius of a turning body by arranging a housing part for housing a condenser for an air conditioner and the like that houses a condenser for an air conditioner and a receiver dryer in a lower portion of a rear wall of a cabin positioned right above a hood. Solution to Problem.

A turning working vehicle of the present invention described in claim <NUM> is a turning working vehicle comprising:a prime mover part, said prime mover part being covered at the rear with a hood arranged behind a turning body;an operation part, said operation part being arranged on said prime mover part; and a cabin, said cabin covering said operation part and a rear wall portion of said cabin being formed of a rear window portion and of a housing part,wherein the housing part for housing a condenser for an air conditioner is arranged under the rear window portion and over the hood.

In the turning working vehicle, the condenser for an air conditioner and the receiver dryer are housed in the housing part for housing a condenser for an air conditioner and the like which is mounted on the lower portion of the rear wall of the cabin. Accordingly, an engine room in which the condenser for an air conditioner and the receiver dryer has been housed heretofore can be made small in size by the same amount and, at the same time, the hood which has covered a portion of the engine room heretofore can be made small in size. Equipment which requires frequent maintenance such as a washer tank can be arranged in the housing part for housing a condenser for an air conditioner and the like and hence, the maintenance of the equipment can be performed simply, and cleaning can be also performed easily even in the case where a washing liquid is leaked from the washer tank.

The turning working vehicle of the present invention described in claim <NUM> is, in the turning working vehicle of the present invention described in claim <NUM>, characterized in that either one of left and right edge portions on one side of an open/close cover is pivotally supported on the housing part for housing a condenser for an air conditioner and the like, either one of left and right edge portions on the other side of the open/close covers is made openable or closable, the hood is disposed just below the open/close cover, and the hood is openable or closable in the same direction as the open/close cover.

In the turning working vehicle, the hood and the open/close cover arranged just below the hood can be opened/closed in the same direction and hence, both the hood and the open/close cover can be opened easily whereby the maintenance of the prime mover part and the maintenance of the condenser for an air conditioner and the like can be performed simultaneously. Particularly, the maintenance of the refrigerant pipe which connects the condenser for an air conditioner arranged in the housing part for housing a condenser for an air conditioner and the like and the compressor arranged in the prime mover part can be performed easily.

The turning working vehicle of the present invention described in claim <NUM> is, in the turning working vehicle of the present invention described in claim <NUM>, characterized in that the condenser for an air conditioner is arranged on a pivotally supporting side of the open/close cover in the housing part for housing a condenser for an air conditioner and the like, and the receiver dryer, a washer tank and a refrigerant pipe connecting part are disposed collectively on an open/close side of the open/close cover.

In the turning working vehicle, the receiver dryer, the washer tank and the refrigerant pipe connecting part are collectively disposed on the opening/closing side of the open/close cover and hence, access has become easier for performing checks-ups for the receiver dryer, replenishment of a washer liquid to the washer tank and checks-ups for leakage of a refrigerant in the refrigerant pipe connecting parts whereby these operations can be performed rapidly and reliably.

According to the present invention, the housing part for housing a condenser for an air conditioner and the like is mounted on the lower portion of the rear wall of the cabin positioned just above the hood, and the condenser for an air conditioner, the receiver dryer and the like are housed in the housing part for housing a condenser for an air conditioner and the like and hence, the hood can be made small and, at the same time, a turning radius of the turning body can be made small.

Hereinafter, the embodiment of the present invention is explained by reference to drawings. Symbol A shown in <FIG> indicates an excavation working vehicle which constitutes a turning working vehicle according to the present invention.

As shown in <FIG>, the excavation working vehicle A is constituted of: a traveling machine body <NUM> which is capable of self-traveling, an excavation part <NUM> and an earth removing part <NUM> which are constituted as a working part mounted on the traveling machine body <NUM>. In this embodiment, as a working attachment, a bucket <NUM> for excavation is mounted on a distal end portion of the working part, and the bucket <NUM> constitutes the excavation part <NUM>.

The traveling machine body <NUM> is capable of performing straight traveling in the back-and-forth direction and is also capable of performing turning traveling in the back-and-forth direction as well as in the left-and-right direction by rotatably driving a pair of left and right crawler-type traveling parts <NUM>, <NUM> in the normal direction and the reverse direction respectively, and is also capable of performing sudden turning by rotatably driving the left and right traveling parts <NUM>, <NUM> in the directions opposite to each other respectively. A base <NUM> is interposed between the traveling parts <NUM>, <NUM>, and a turning body <NUM> is mounted on the base <NUM> in a turnable manner. The turning body <NUM> is capable of turning in either the leftward or rightward direction about a vertically extending axis of a center portion. The turning body <NUM> is formed into an approximately disc shape as viewed in a plan view, and is turnable within a lateral width of the traveling parts <NUM>, <NUM> (a distance between an outer edge portion of the left traveling part <NUM> and an outer edge portion of the right traveling part <NUM>). As shown in <FIG> and <FIG>, an operation part <NUM> and a tank portion <NUM> are disposed on a front half portion of the turning body <NUM>, while a function part <NUM> is disposed on a rear half portion of the turning body <NUM>. The operation part <NUM> and the function part <NUM> are surrounded by a cabin <NUM> described later. An excavation part stay <NUM> is mounted on the turning body <NUM> in a frontwardly projecting manner at a position close to one side of a front end portion of the turning body <NUM> (close to a right side in this embodiment), and a proximal end portion of the excavation part <NUM> is pivotally mounted on the excavation part stay <NUM>. The earth removing part <NUM> is mounted on the base <NUM> between the pair of left and right traveling parts <NUM>, <NUM>.

The excavation part <NUM> includes a boom <NUM>, an arm <NUM> and the bucket <NUM>. The excavation part <NUM> further includes a swing cylinder <NUM>, a boom cylinder <NUM>, an arm cylinder <NUM> and a bucket cylinder <NUM> which rotatably operate the boom <NUM>, the arm <NUM> and the bucket <NUM> respectively.

As shown in <FIG>, on the excavation part stay <NUM> which is mounted in a projecting manner on the turning body <NUM> at a position close to a right side of the front end portion of the turning body <NUM>, a swing body <NUM> is pivotally mounted on the pivot shaft <NUM> having an axis thereof directed in the vertical direction in such a manner that the swing body <NUM> is swingable about a pivot shaft <NUM> in the left-and-right direction. The swing cylinder <NUM> which extends and contracts in the back-and-forth direction is interposed between a right intermediate portion of the turning body <NUM> and a right front portion of the swing body <NUM>, and the swing body <NUM> is swung (laterally swung) in an interlocking manner with the extending and contracting operation of the swing cylinder <NUM>.

The boom <NUM> which is bent into an "L shape" as viewed in a side view and extends in the vertical direction is mounted on the swing body <NUM> in a vertically rotatable manner about a first pivot shaft <NUM> in a state where a proximal end portion of the boom <NUM> is pivotally supported on the first pivot shaft <NUM> having an axis thereof directed in the left-and-right direction. The boom cylinder <NUM> which extends and contracts in the vertical direction is interposed between a front end portion of the swing body <NUM> and a front intermediate portion of the boom <NUM>, and the boom <NUM> is rotatably operated in the vertical direction in an interlocking manner with the extending and contracting operation of the boom cylinder <NUM>.

The arm <NUM> is mounted on a distal end portion of the boom <NUM> in a rotatable manner in the back-and-forth direction (vertically rotatable manner) about a second pivot shaft <NUM> in a state where a proximal end portion of the arm <NUM> extending in the vertical direction is pivotally supported on the second pivot shaft <NUM> having an axis thereof directed in the left-and-right direction. The arm cylinder <NUM> which extends and contracts in the back-and-forth direction is interposed between a first cylinder mounting body <NUM> which is mounted on an intermediate portion of an upper surface of the boom <NUM> and a second cylinder mounting body <NUM> which is mounted on a proximal end portion of a front surface of the arm <NUM>. Accordingly, the arm <NUM> is rotatably operated in the back-and-forth direction in an interlocking manner with the extending and contracting operation of the arm cylinder <NUM>.

The bucket <NUM> is mounted on a distal end portion of the arm <NUM> in a rotatable manner in the back-and-forth direction (vertically rotatable manner) about a third pivot shaft <NUM> in a state where a base portion of the bucket <NUM> is pivotally supported on the third pivot shaft <NUM> having an axis thereof directed in the left-and-right direction. A bucket link <NUM> is interposed between the distal end portion of the arm <NUM> and a base portion of the bucket <NUM>, and the bucket cylinder <NUM> which is extensible in the vertical direction is interposed between the bucket link <NUM> and the second cylinder mounting body <NUM> of the arm <NUM>. Accordingly, the bucket <NUM> is rotatably operated in the back-and-forth direction (rotated in the vertical direction) in an interlocking manner with the extending and contracting operation of the bucket cylinder <NUM>.

As shown in <FIG>, the earth removing part <NUM> is provided between a pair of left and right traveling parts <NUM>. The earth removing part <NUM> is configured such that proximal end portions of a pair of left and right blade arms <NUM>, <NUM> which extends in the back-and-forth direction are mounted on the base <NUM> in a liftable manner, and a blade (earth removing plate) <NUM> which extends in the left-and-right direction extends between distal end portions of both blade arms <NUM>, <NUM>. The blade <NUM> is formed so as to have approximately the same width as the lateral width of the traveling parts <NUM>, <NUM>. Symbol <NUM> indicates a blade cylinder.

Due to such a constitution, when an operator controls the traveling parts <NUM> in the operation part <NUM>, the traveling machine body <NUM> can perform the straight traveling in the back-and-forth direction and the turning traveling in the left-and-right directions as he desires. When the operator controls the excavation part <NUM> in the operation part <NUM>, the traveling machine body <NUM> can perform the excavation operation. Further, when the operator controls the earth removing part <NUM> in the operation part <NUM>, the traveling machine body <NUM> can perform the earth removing operation.

As described above, the cabin <NUM> is mounted on the turning body <NUM>, and surrounds the operation part <NUM> and the function part <NUM> except for the tank portion <NUM>. That is, as shown in <FIG>, the cabin <NUM> is formed into a box shape with a lower surface opened which is defined by a front wall portion <NUM>, a left side wall portion <NUM>, a right side wall portion <NUM>, a rear wall portion <NUM>, and a ceiling portion <NUM>.

As shown in <FIG>, the front wall portion <NUM> is configured such that a lower front wall body <NUM> extending in the left-and-right direction and having a laterally-elongated rectangular shape extends between lower portions of a pair of left and right front columnar bodies <NUM>, <NUM> which extends in the vertical direction, a front glass frame body <NUM> having a vertically-elongated rectangular frame shape extends between upper portions of the front columnar bodies <NUM>, <NUM>, and a front glass <NUM> is mounted on the front glass frame body <NUM>. Symbol <NUM> indicates a wiper. The pair of left and right front columnar bodies <NUM>, <NUM> is formed in a rearwardly-inclined manner such that a rear side of the front columnar bodies <NUM>, <NUM> is at a high position and a front side of the front columnar bodies <NUM>, <NUM> is at a low position, and the front columnar bodies <NUM>, <NUM> have lower portions thereof bent in a frontwardly inclined manner such that a front side is at a high position and a rear side is at a low position. Accordingly, the front glass <NUM> is mounted on the pair of left and right front columnar bodies <NUM>, <NUM> in a rearwardly inclined manner, and the lower front wall body <NUM> below the front glass <NUM> is mounted in a frontwardly inclined manner. Symbol <NUM> indicates a front upper lateral member which is mounted between upper end portions of the pair of left and right front columnar bodies <NUM>, <NUM> in an extending manner in the left-and-right direction, and symbol <NUM> indicates a hand rail which is mounted on the left front columnar body <NUM>.

As shown in <FIG>, the left side wall portion <NUM> is formed of a front half side wall portion <NUM> and a rear half side wall portion <NUM>. The front half side wall portion <NUM> is formed of a door frame body <NUM>, and an open/close door <NUM> which is mounted on the door frame body <NUM> in an openable and closable manner. The door frame body <NUM> is formed of a left front columnar body <NUM>, a front half upper lateral member <NUM> which extends horizontally in the rearward and outward direction from an upper end portion of the left front columnar body <NUM>, an intermediate columnar body <NUM> which has an upper end portion thereof connected to a rear end portion of the front half upper lateral member <NUM> and extends in the vertical direction, and a plate-like front half lower lateral member <NUM> which connects a lower end portion of the intermediate columnar body <NUM> and a lower end portion of the left front columnar body <NUM> to each other and extends in the back-and-forth direction, and the door frame body <NUM> is formed into a frame shape as viewed in a left side view. The open/close door <NUM> has an outer profile along an inner peripheral portion of the door frame body <NUM>, and a rear edge portion of the open/close door <NUM> is pivotally supported on and connected to the intermediate columnar body <NUM> by way of upper and lower hinges <NUM>, <NUM> so that the open/close door <NUM> can be opened and closed by rotating a front edge portion side of the open/close door <NUM> about the pivotally-supporting and connecting portion.

The rear half side wall portion <NUM> of the left side wall portion <NUM> is configured such that a rear half upper lateral member <NUM> extends horizontally in the rearward and inward direction from an upper end portion of the intermediate columnar body <NUM>, an upper end portion of a left rear columnar body <NUM> which extends in the vertical direction is connected to a rear end portion of the rear half upper lateral member <NUM>, a left rear half glass window <NUM> is mounted on most of an inner peripheral portion of the intermediate columnar body <NUM>, the rear half upper lateral member <NUM>, and the left rear columnar body <NUM>, and a door opening receiving body <NUM> is mounted on a lower edge portion of the left rear half glass window <NUM>. A left lower edge wall <NUM> which is formed into a hook shape along a lower edge portion of the door opening receiving body <NUM> and a lower half rear edge portion of the intermediate columnar body <NUM> is mounted on a lower side of the door opening receiving body <NUM>.

As shown in <FIG>, the right side wall portion <NUM> is configured such that front and rear glass windows <NUM>, <NUM> are mounted on an upper portion of a right side wall forming frame body <NUM> in a slidable manner in the back-and-forth direction by way of a window frame body <NUM>, and a right lower edge wall <NUM> is mounted on a lower portion of the right side wall forming frame body <NUM>. The right side wall forming frame body <NUM> is formed of a right upper lateral member <NUM> which extends horizontally in the direct rearward direction from a right end portion of the front upper lateral member <NUM>, a right rear columnar body <NUM> which has an upper end portion thereof connected to a rear end portion of the right upper lateral member <NUM> and extends in the vertical direction, and a right intermediate lateral member <NUM> which extends between a lower portion of the right rear columnar body <NUM> and an intermediate portion of the right front columnar body <NUM> and extends in the back-and-forth direction, and an upper portion of the right side wall forming frame body <NUM> is formed into a frame shape. The right rear columnar body <NUM> and the left rear columnar body <NUM> are arranged to face each other in an opposed manner in the left-and-right direction, and a rear lower lateral plate member <NUM> which extends in the left-and-right direction extends between lower ends of both columnar bodies <NUM>, <NUM>. The right lower edge wall <NUM> is mounted along a lower half rear edge portion of the right rear columnar body <NUM>, a lower edge portion of the right intermediate lateral member <NUM>, and a lower front edge portion of the right rear columnar body <NUM>, and a lower edge portion of the right lower edge wall <NUM> are formed into an upwardly projecting shape by bending.

As shown in <FIG>, <FIG> and <FIG>, the rear wall portion <NUM> is formed of a rear window portion <NUM> and a housing part <NUM> for housing a condenser for an air conditioner and the like which are arranged in the vertical direction. The rear window portion <NUM> is configured such that a rear upper lateral member <NUM> which is formed in a rearwardly projecting manner by bending extends between upper end portions of the left and right rear columnar bodies <NUM>, <NUM>, a plate-like rear intermediate partition body <NUM> which has a rear edge portion thereof projected rearwardly by bending extends between intermediate portions of the left and right rear columnar bodies <NUM>, <NUM>, and a curved rear glass window <NUM> which has a rectangular shape as viewed in a back view and projects rearwardly as viewed in a plan view is mounted on inner peripheral portions of these rear upper lateral member <NUM> and the rear intermediate partition body <NUM> by way of a rear window frame body <NUM>. The housing part <NUM> for housing a condenser for an air conditioner and the like is configured such that a box-shaped housing part inner wall <NUM> (see <FIG>) is mounted on an inner peripheral portion which is formed into a laterally-elongated rectangular frame shape by lower half portions of the left and right rear columnar bodies <NUM>, <NUM>, the rear intermediate partition body <NUM> and the rear lower lateral member <NUM> in a frontwardly projecting manner so that a recessed housing space <NUM> (see <FIG> and <FIG>) with a rear surface opened is formed. A left edge portion of an open/close cover <NUM> is pivotally supported on and is connected to a lower half portion of the left rear columnar body <NUM> by way of a pivotally support bracket <NUM> (see <FIG>) so that the housing space <NUM> can be opened and closed by the open/close cover <NUM>. Rear edge portions of the open/close cover <NUM>, the rear intermediate partition body <NUM>, and the rear lower lateral member <NUM> are formed into a curved shape along a shape of a rear peripheral portion of the turning body <NUM>. Symbol <NUM> indicates a handle for opening and closing the open/close cover <NUM> mounted on a right portion of the open/close cover <NUM>.

A shown in <FIG>, the ceiling portion <NUM> is configured such that a ceiling plate <NUM> is mounted on an inner peripheral portion which is formed into a ring shape by the front upper lateral member <NUM>, the front half upper lateral member <NUM>, the rear half upper lateral member <NUM>, the rear upper lateral member <NUM>, and the right upper lateral member <NUM>. A skylight window glass <NUM> having a laterally-elongated rectangular shape is mounted on a front portion of the ceiling plate <NUM> thus forming a skylight window <NUM>.

As shown in <FIG>, <FIG> and <FIG>, a left rear edge wall <NUM> which is formed by bending along a left rear edge portion of the turning body <NUM> which is formed into an arc shape as viewed in a plan view is mounted on the left rear edge portion of the turning body <NUM> in a raised manner, the hood <NUM> and a counter weight <NUM> which are formed by bending along a rear edge portion of the turning body <NUM> are vertically arranged on the rear edge portion of the turning body <NUM> in hierarchical structure, and the tank portion <NUM> is arranged on a right rear edge portion of the turning body <NUM>. The cabin <NUM> surrounds the operation part <NUM> and the function part <NUM> by the left rear edge wall <NUM>, the hood <NUM>, the counter weight <NUM>, and the tank portion <NUM> on the turning body <NUM>. Symbol <NUM> indicates a hood handle which is formed on a right portion of the hood <NUM>, and the hood <NUM> can be opened leftwardly and rearwardly by way of the hood handle <NUM>.

As shown in <FIG> and <FIG>, the operation part <NUM> is configured such that a front wall of a seat support base (seat mount) <NUM> is arranged on a rear edge portion of a floor plate member <NUM> which forms a portion of the turning body <NUM>, and an operator's seat <NUM> is mounted on a center portion of the seat support base <NUM>. A left lever support case <NUM> is disposed on a left side of the operator's seat <NUM> on the seat support base <NUM>, while a right lever support case <NUM> is disposed on a right side of the operator's seat <NUM>. A left pilot valve (not shown in the drawing) is disposed in the inside of the left lever support case <NUM>, a left operation part manipulation lever <NUM> projects upwardly from a front upper portion of the left lever support case <NUM>, and the left operation part manipulation lever <NUM> can be manipulated in a tiltable manner in the back-and-forth direction and in the left-and-right direction.

Further, the left lever support case <NUM> can change the position thereof between the in-use position where the left lever support case <NUM> is arranged approximately horizontally and the non-use position where the left lever support case <NUM> is flipped up rearwardly and upwardly about a rear portion thereof. Symbol <NUM> indicates a lock lever which projects frontwardly from a front end wall of the left lever support case <NUM>.

A right pilot valve (not shown in the drawing) is disposed in the inside of the right lever support case <NUM>, a right operation part manipulation lever <NUM> projects upwardly from a front upper portion of the right lever support case <NUM>, and the right operation part manipulation lever <NUM> can be manipulated in a tiltable manner in the back-and-forth direction and in the left-and-right direction.

Left and right traveling levers <NUM>, <NUM> which extend in the vertical direction through lever holes formed in a front center portion of the floor plate member <NUM> are provided in an erected manner just in front of the operator's seat <NUM>, and the respective traveling levers <NUM>, <NUM> can be manipulated in a tiltable manner in the back-and-forth direction. Traveling hydraulic motors for the traveling parts <NUM>, <NUM> are hydraulically connected to the respective traveling levers <NUM>, <NUM> by way of traveling control valves (not shown in the drawing), and traveling of the traveling parts <NUM>, <NUM> can be controlled by interlocking the rotation of the traveling hydraulic motors in the normal direction or in the reverse direction with tilting of the respective traveling levers <NUM>, <NUM> in the back-and-forth direction. Symbol <NUM> is an accelerating pedal which is mounted on the floor plate member <NUM> at a position in the vicinity of a left side of the left traveling lever <NUM>, and a vehicle speed is accelerated by stepping-on the acceleration pedal <NUM>. Symbol <NUM> indicates a boom swing control pedal which is mounted on the floor plate member <NUM> at a position in the vicinity of a right side of the right traveling lever <NUM>.

An operation panel part <NUM> having a long width in the back-and-forth direction and a short width in the left-and-right direction is arranged adjacent to the right lever support case <NUM> on a right side of the right lever support case <NUM>. A liquid crystal monitor <NUM> is disposed on a front portion of an upper surface of the operation panel part <NUM>, a blade lever <NUM> is projected from an intermediate portion of the operation panel part <NUM> such that the blade lever <NUM> can be manipulated in a tiltable manner in the back-and-forth direction, and a group of various switches <NUM> is disposed on a rear portion of the operation panel part <NUM>. The blade cylinder <NUM> of the earth removing portion <NUM> is hydraulically connected to the blade lever <NUM> by way of a blade cylinder control valve (not shown in the drawing), and the earth removing part <NUM> can be operated in a liftable manner by interlocking the extending and contracting operation of the blade cylinder <NUM> with the tilting manipulation of the blade lever <NUM> in the back-and-forth direction.

As shown in <FIG> and <FIG>, the function part <NUM> is configured such that an engine room <NUM> is formed below the seat support base <NUM>, and an engine E which constitutes a prime mover part and the like and a support machine frame portion <NUM> are disposed in the inside of the engine room <NUM>. The engine E is arranged in a state where an axis of the engine E is directed in the left-and-right direction. The support machine frame portion <NUM> is mounted on a back side of the engine E in a raised manner, and the rear lower lateral plate member <NUM> is placed on and connected to an upper end portion of the support machine frame portion <NUM> thus fixing a rear portion of the cabin <NUM>.

The tank portion <NUM> is configured such that a fuel tank which stores a fuel for driving the engine E and a working oil tank which stores working oil therein (both not shown in the drawing) are arranged adjacent to each other in the back-and-forth direction. These tanks are closed by a front tank cover body <NUM> which is formed on a right front portion of the turning body <NUM> in a raised manner while being bent into a curved shape, first and second tank cover bodies <NUM>, <NUM> which are arranged along a side edge portion of the front portion of the turning body <NUM> (see <FIG> and <FIG>), an inner wall body which is raised on a right inner side of the floor plate member <NUM>, and an upper surface cover body <NUM> which is disposed on upper edge portions of inner wall bodies (not shown in the drawing) of these front tank cover body <NUM> and the first and second tank cover bodies <NUM>, <NUM> (see <FIG> and <FIG>). An upper side of both tanks can be opened or closed by the upper surface cover body <NUM>.

As shown in <FIG>, <FIG>, <FIG>, the housing part <NUM> for housing a condenser for an air conditioner and the like is disposed on a lower portion of the rear wall portion <NUM> of the cabin <NUM>. The housing part <NUM> for housing a condenser for an air conditioner and the like stores a condenser <NUM> for an air conditioner which constitutes a portion of an air conditioner <NUM>, a receiver drier <NUM>, a washer tank <NUM> and the like. On the housing part <NUM> for housing a condenser for an air conditioner and the like, one edge portion of left and right edge portions (in this embodiment, left edge portion) of the open/close cover <NUM> is pivotally supported so as to open or close the other edge portion side of the left and right edge portions of the open/close cover <NUM> (in this embodiment, the right edge portion). Further, in the housing part <NUM> for housing a condenser for an air conditioner and the like, the condenser <NUM> for an air conditioner is disposed on a side where the open/close cover <NUM> is pivotally supported, while the receiver drier <NUM>, the washer tank <NUM> and a refrigerant pipe connecting part <NUM> are collectively disposed on a side where the open/close cover body <NUM> is opened and closed.

A rear portion which constitutes a portion of the engine E is disposed in a rearwardly projecting manner, and the projecting rear portion of the engine E is covered by the hood <NUM> in an openable and closable manner. The hood <NUM> is disposed just below the open/close cover <NUM>, and can be opened and closed in the same direction as the open/close cover <NUM> (in this embodiment, a right edge portion side being openable or closable leftwardly and rearwardly using a left edge portion of the hood as a pivotally supported portion).

Due to such a constitution, the condenser <NUM> for an air conditioner and the receiver drier <NUM> are housed in the inside of the housing part <NUM> for housing a condenser for an air conditioner and the like which is disposed on the lower portion of the rear wall portion <NUM> of the cabin <NUM>. Accordingly, the engine room <NUM> for housing the condenser <NUM> for an air conditioner and the receiver drier <NUM> therein can be made small by the same amount and, at the same time, the hood <NUM> which covers a portion of the engine room <NUM> can be made small. Further, equipment which requires maintenance frequently such as the washer tank <NUM> can be disposed in the housing part <NUM> for housing a condenser for an air conditioner and the like and hence, maintenance can be easily performed and, at the same time, even when a water liquid in the washer tank <NUM> leaks, cleaning can be easily performed.

The hood <NUM> and the open/close cover <NUM> which are disposed just below the hood <NUM> can be opened and closed in the same direction and hence, both the hood <NUM> and the open/close cover <NUM> can be easily opened whereby maintenance of the engine E and maintenance of the condenser <NUM> for an air conditioner and the like can be performed simultaneously. Particularly, maintenance of a refrigerant pipe which connects the condenser <NUM> for an air conditioner disposed in the housing part <NUM> for housing a condenser for an air conditioner and the like and a compressor disposed in the engine E to each other can be easily performed.

The receiver drier <NUM>, the washer tank <NUM>, and the refrigerant pipe connecting part <NUM> are collectively disposed in the housing part <NUM> for housing a condenser for an air conditioner and the like on a side where the open/close cover <NUM> is opened and closed and hence, access can be facilitated for performing checking on the receiver drier <NUM>, replenishment of a washer liquid to the washer tank <NUM> and checking for leakage of refrigerant in the refrigerant pipe connecting part <NUM> can be facilitated whereby these operations can be performed rapidly and reliably.

Hereinafter, the constitution of the housing part <NUM> for housing a condenser for an air conditioner and the like is explained in more detail.

As shown in <FIG>, the housing part <NUM> for housing a condenser for an air conditioner and the like is configured such that the box-shaped housing part inner wall <NUM> is formed of: an erected wall <NUM> having a laterally-elongated quadrangular shape; an upper wall <NUM> which extends approximately horizontally in the rearward direction from an upper edge portion of the erected wall <NUM>; the rear lower lateral plate member <NUM> which is contiguously mounted on a lower edge portion of the erected wall <NUM> in a state where the rear lower lateral plate member <NUM> projects approximately horizontally in the rearward direction; and left and right side walls <NUM>, <NUM> which are connected to left and right side edge portions of the erected wall <NUM> respectively in a rearwardly projecting manner, and the recessed housing space <NUM> is formed in the inside of the box-shaped housing part inner wall <NUM>. The pivotally-support bracket <NUM> which is rotated about an axis extending in the vertical direction is mounted on the left side wall <NUM>, and a left edge portion of the open/close cover body <NUM> is mounted on the pivotally-support bracket <NUM>. The open/close cover <NUM> is formed into a laterally-elongated quadrangular shape, and is formed into a circular arc shape by being bent along a rear peripheral portion of the turning body <NUM>. The handle <NUM> is mounted on a right end portion of the open/close cover <NUM> (see <FIG>), and the open/close cover <NUM> can be opened leftwardly and rearwardly and also can be closed by locking by way of the handle <NUM>.

As shown in <FIG>, a pair of left and right condenser support bodies <NUM> is mounted on a left portion and a center portion of the erected wall <NUM> respectively, and the condenser <NUM> for an air conditioner is mounted on the pair of left and right condenser support bodies <NUM> by way of brackets <NUM>. In the condenser support body <NUM>, leg members <NUM>, <NUM>, <NUM> which respectively project frontwardly are mounted on an upper portion, an intermediate portion and a lower portion of a body member <NUM> which extends in the vertical direction. Front end portions of the leg members <NUM>, <NUM>, <NUM> are contiguously mounted on the erected wall <NUM>, and ventilation openings <NUM> which open in the left-and-right direction are formed between the leg members <NUM>, <NUM>, <NUM> whose front surfaces are closed by the erected wall <NUM>. A wind guide body <NUM> having a quadrangular cylindrical shape is connected to a rear surface of the condenser <NUM> for an air conditioner by way of a connecting member <NUM>, and a resilient contact member <NUM> is mounted on a rear edge portion of the wind guide body <NUM>. With the resilient contact member <NUM>, left and right contact portions <NUM>, <NUM> (see <FIG>) which are formed on left and right side portions of an inner surface (front surface) of the open/close cover body <NUM> in a projecting manner while extending in the vertical direction are brought into contact with in a closed state. Accordingly, the housing space <NUM> is divided into a space in the inside of the wind guide body <NUM> and a space in a remaining portion. Ventilation portions <NUM>, <NUM>, <NUM> respectively having a network structure are formed on a portion of the open/close cover body <NUM> which faces the condenser <NUM> for an air conditioner in an opposed manner and the left and right side portions of the open/close cover body <NUM> respectively. A fan <NUM> which incorporates an electrically-operated motor therein is disposed in the inside of the wind guide body <NUM>, and the fan <NUM> is rotatably driven by the electrically-operated motor. Symbol <NUM> indicates connecting screws, symbol <NUM> indicates screw holes, and symbol <NUM> indicates connecting bolts.

When the condenser <NUM> for an air conditioner is unnecessary at the time of heating or the like, for example, by removing the connecting screws <NUM> and by integrally removing the condenser <NUM> for an air conditioner and the wind guide body <NUM> from the condenser support bodies <NUM>, it is possible to ensure the spacious housing space <NUM>. Accordingly, a tool box and the like can be stored in the inside of the housing space <NUM> and hence, it is possible to effectively use the housing space <NUM>.

Due to such a constitution, by rotatably driving the fan <NUM> using the electrically-operated motor, air in the housing space <NUM> can be discharged to the outside of the machine through the condenser <NUM> for an air conditioner, the wind guide body <NUM> and the ventilation portion <NUM> in this order. In this case, outside air is sucked into the inside of the housing space <NUM> through the ventilation portions <NUM>, <NUM>, and then flows into the condenser <NUM> for an air conditioner through the ventilation port <NUM> of the condenser support body <NUM>. As a result, the condenser <NUM> for an air conditioner is cooled by air.

The receiver drier <NUM> which is formed of a vertically-elongated cylindrical container is mounted on the right connecting member <NUM> by way of a receiver drier mounting bracket <NUM>. The receiver drier <NUM> is a tank which temporarily stores a refrigerant liquefied by the condenser <NUM> for an air conditioner, and a strainer for removing impurities from the refrigerant and a desiccant for removing moisture from the refrigerant are stored in the inside of the receiver drier <NUM>. The washer tank <NUM> is mounted and arranged on the erected wall <NUM> by way of a tank mounting bracket <NUM> on a right side of the receiver drier <NUM>. Symbol <NUM> indicates a closed lock portion for the open/close cover body <NUM>.

As shown in <FIG>, the air conditioner <NUM> includes a cooling cycle mechanism <NUM> and a heating cycle mechanism <NUM>. The cooling cycle mechanism <NUM> is constituted of: a compressor <NUM> which is interlockingly connected to the engine E, is disposed behind and above the engine E and compresses a refrigerant; the condenser <NUM> for an air conditioner; the receiver drier <NUM>; an expansion valve <NUM>; an evaporator <NUM> which is mounted on a cooled air and heated air discharge portion <NUM>; and a refrigerant pipe <NUM> by which these components are communicably connected to each other.

The compressor <NUM> is provided for compressing a refrigerant. The condenser <NUM> for an air conditioner is provided for liquefying a refrigerant which becomes high temperature and high pressure due to the compression of the refrigerant by cooling. The receiver drier <NUM> is a tank in which a strainer for removing impurities from a refrigerant and a desiccant for removing moisture from the refrigerant are stored and which temporarily stores a refrigerant liquefied by the condenser <NUM> for an air conditioner. The expansion valve <NUM> is mounted on an inlet of the evaporator <NUM>. When a high-temperature and high-pressure liquefied refrigerant passes through the expansion valve <NUM>, the refrigerant is changed into a gas a mist form from a liquid form and is injected. The evaporated refrigerant passes through the evaporator <NUM> and removes heat from the evaporator <NUM> so that the evaporator <NUM> per se is cooled. The refrigerant pipe <NUM> is constituted of: a first refrigerant tube <NUM> which communicably connects the compressor <NUM> and the condenser <NUM> for an air conditioner to each other; a second refrigerant tube <NUM> which communicably connects the condenser <NUM> for an air conditioner and the receiver drier <NUM> to each other; a third refrigerant tube <NUM> which communicably connects the receiver drier <NUM> and the expansion valve <NUM> to each other; a fourth refrigerant tube <NUM> which communicably connects the expansion valve <NUM> and the evaporator <NUM> to each other; and a fifth refrigerant tube <NUM> which communicably connects the evaporator <NUM> and the compressor <NUM> to each other.

The heating cycle mechanism <NUM> is constituted of: a water pump <NUM> which is interlockingly connected to the engine E and is disposed in front of, on a right side of, and above the engine E; a heater core <NUM> which is mounted on the cooled air and heated air discharge portion <NUM> and functions as a heat exchanger; and a hot water pipe <NUM> by which these components ranging from the water pump <NUM> to the heater core <NUM> are communicably connected to each other. The hot water pipe <NUM> is constituted of a discharge-side hot water tube <NUM> and a return-side hot water tube <NUM>.

The cooled air and heated air discharge portion <NUM> is disposed on the right side of the operation part <NUM> and just in front of the right lever support case <NUM>. That is, the cooled air and heated air discharge portion <NUM> is configured such that a rectangular-box-shaped cooled air and heated air discharge case <NUM> which is tapered upwardly is raised from the floor plate member <NUM> of the operation part <NUM>, and an upper end portion of the cooled air and heated air discharge case <NUM> is contiguously connected to a front portion of the operation panel part <NUM>. A left upper discharge port <NUM> and a left lower suction hole <NUM> are formed in an upper portion and a lower portion of a left side wall of the cooled air and heated air discharge case <NUM> respectively, a front upper discharge port <NUM> is formed in an upper portion of a front wall of the cooled air and heated air discharge case <NUM>, and a laterally-extending upper end discharge port <NUM> and a longitudinally-extending upper end discharge port <NUM> are formed in an upper end wall of the cooled air and heated air discharge case <NUM>. On these discharge ports <NUM> to <NUM>, first to fourth discharge direction adjusters <NUM> to <NUM> such as louvers by which the discharge direction of discharged air can be adjusted are disposed. Symbol <NUM> indicates a ventilator which is communicably connected to a right side wall of the cooled air and heated air discharge case <NUM>.

Claim 1:
A turning working vehicle comprising:
a prime mover part, said prime mover part being covered at the rear with a hood (<NUM>) arranged behind a turning body (<NUM>);
an operation part (<NUM>), said operation part (<NUM>) being arranged on said prime mover part; and
a cabin (<NUM>), said cabin (<NUM>) covering said operation part (<NUM>) characterized in that the cabin comprises
a rear wall portion (<NUM>) of said cabin being formed of a rear window portion (<NUM>) and of a housing part (<NUM>), and in that
the housing part (<NUM>) for housing a condenser (<NUM>) for an air conditioner is arranged under the rear window portion (<NUM>) and over the hood (<NUM>).