JP5541987B2 - Work vehicle - Google Patents

Description

  The present invention relates to a work vehicle including a cabin that covers a control unit of a traveling machine body.

  A work vehicle including a cabin that covers a control unit of a traveling machine body and a washer tank is conventionally known, and the washer tank is disposed in the vicinity of the cabin in order to supply water to the windshield and rear glass of the cabin. In many cases, for example, a work vehicle shown in Patent Document 1 in which a washer tank is arranged in a cabin and a work vehicle shown in Patent Document 2 in which a washer tank is arranged along the outer surface side of the rear wall of the cabin are publicly known. It has become.

Japanese Utility Model Publication No. 2-5372 (Fig. 2) Japanese Patent No. 3984882 (FIG. 1)

  However, in the work vehicle of Patent Document 1, water in the washer tank may leak into the cabin, and in order to prevent such water leakage, it is necessary to separately provide a member for preventing water leakage. On the other hand, in the work vehicle of Patent Document 2, since the washer tank is arranged outside the cabin, there is no risk of water leaking into the cabin. However, when the washer tank is made of synthetic resin, The washer tank may deteriorate rapidly.

  The present invention is a work vehicle including a cabin that covers a control unit of a traveling aircraft body and a washer tank disposed in the vicinity of the cabin, and water leakage from the washer tank into the cabin, and deterioration of the washer tank itself. It is an object to provide a work vehicle that can efficiently prevent both.

In order to solve the above-mentioned problem, the present invention firstly is a work vehicle including a cabin 6 that covers the control unit 9 of the traveling machine body 7 and a washer tank 33, and the washer tank 33 made of synthetic resin is by attaching the rear side of the rear cover 28 constituting at least a part of the rear wall of the cabin 6, located outside of the cabin 6, a cover member 36 for covering the rear side of the washer tank 33, the cover body 36 and the rear cover An intermediate plate 38 is provided to separate the space S between the front and rear sides 28, and the washer tank 33 is disposed so that the front portion of the washer tank 33 faces the space S1 between the intermediate plate 38 and the rear cover 28. A feature is that the wiring 43 or the piping 44 of the washer tank 33 is passed through S1 .

Secondly, a check hole 36b for exposing a part of the rear surface of the washer tank 33 is formed in the cover body 36 in order to check the remaining amount.

  According to the present invention, when the washer tank is disposed outside the cabin in order to prevent water leakage into the cabin, the cover body covering the rear side of the washer tank is provided, so that the washer tank made of synthetic resin is provided. It can efficiently prevent deterioration due to ultraviolet rays or the like.

  In addition, an intermediate plate that separates the space between the cover body and the rear cover in the front-rear direction is provided, and the washer tank is disposed so that the front portion of the washer tank faces the space between the intermediate plate and the rear cover. If the tank wiring or piping is passed, it is not necessary to separately form a space for passing the piping or wiring, and the piping or wiring is covered and protected efficiently by the rear cover and the intermediate plate.

  Furthermore, if the cover body has a confirmation hole that exposes a part of the rear surface of the washer tank to check the remaining amount, the remaining amount of the washer tank can be confirmed even when the rear side of the washer tank is covered with the cover body. Becomes easier and the convenience is improved.

1 is an overall side view of an agricultural tractor to which the present invention is applied. It is a rear view of a cabin. It is a front perspective view which shows a cabin and the principal part structure of the periphery of it. FIG. 3 is a rear left perspective view showing the main configuration of the cabin and its surroundings. FIG. 3 is a rear right perspective view showing a main configuration of the cabin and its surroundings. It is a sectional side view which shows the structure of a washer tank. It is a wiring diagram of a washer tank. It is a principal part top view which shows another embodiment of a tractor. It is a principal part side view which shows another embodiment of a tractor. It is a principal part front sectional view which shows another embodiment of a tractor.

  FIG. 1 is an overall side view of an agricultural tractor to which the present invention is applied. The present tractor, which is a type of work vehicle, is provided with an openable / closable bonnet 4 that covers an engine (not shown) in a front half portion on a chassis 3 supported by a pair of left and right front wheels 1L, 1R and rear wheels 2L, 2R. A traveling machine body 7 is configured by erecting a cabin 6 on the rear half of the chassis 3, and a rotary tiller device is installed on the rear part of the traveling machine body 7 via a lifting link 8 (see FIGS. 3 to 5). Etc., such as a working machine (not shown) is connected to be movable up and down.

  A control unit 9 is installed in the cabin 6, and various operating tools are installed in the control unit 9 in addition to a seat 11 on which an operator is seated, in front of and on the side of the seat 1.

Next, the configuration of the cabin 6 and its surroundings will be described in detail with reference to FIGS.
FIG. 2 is a rear view of the cabin, and FIGS. 3 to 5 are a front perspective view, a rear left perspective view, and a rear right perspective view showing the main configuration of the cabin and its surroundings. The cabin 6 forms a frame by a pair of front left and right front pillars 12L and 12R, a pair of left and right rear pillars 13L and 13R, and a roof 14 supported by the four support columns 12L, 12R, 13L and 13R. ing. Incidentally, the rear pillars 13L and 13R are provided so as to project upward from the rear end portions of the fenders 16L and 16R having an arc shape in side view covering the upper side and the front side of the rear wheel 2 on the near side.

  A transparent front panel 17 made of glass or synthetic resin is formed between the left and right front pillars 12L and 12R, and a transparent rear panel 18 made of glass or synthetic resin is formed between the left and right rear pillars 13L and 13R. A transparent panel door 19R made of glass or resin is installed between the front pillar 12R and the rear pillar 13R on the right side (hereinafter simply “right”) side in the traveling direction, A transparent panel door 19L made of glass or resin is installed between the front pillar 12L and the rear pillar 13L on the “left” side.

  The left and right panel doors 19L and 19R are configured such that rear ends thereof are supported by the proximity-side rear pillars 13L and 13R, and the whole is horizontally rotated. Each of the panel doors 19L and 19R opens and closes the side of the control unit 9 by the horizontal rotation, and a grip 21 for smoothly opening and closing is provided at the front of each of the panel doors 19L and 19R. ing. The left and right panel doors 19L and 19R constitute left and right side walls of the cabin 6, respectively, in the closed state.

  The front panel 17 constitutes the upper half of the front wall of the cabin 6, and the front panel 17 located outside the cabin 6 has a wiper 22 and a discharge nozzle that discharges cleaning water to the front side of the front panel 17. 23 are installed. And the wiper 22 wipes off the water droplets adhering to the front surface of the front panel 17 by the left-right rotation driving, and ensures the front view of the operator, and also the cleaning discharged from the discharge nozzle 23 on the upper end side of the front surface of the front panel 17. By wiping off the water, dust and the like adhering to the front surface of the front panel 17 can be removed to clean the front panel 17. Incidentally, the lower half of the front wall of the cabin 6 is constituted by a front cover 24 made of a metal plate or the like.

  The rear panel 18 constitutes the upper half of the rear wall of the cabin 6, and on the rear surface of the rear panel 18 located outside the cabin 6, there are a wiper 26 and a discharge nozzle 27 that discharges cleaning water to the rear surface side of the rear panel 18. is set up. The wiper 26 is driven to rotate left and right to wipe off water droplets adhering to the rear surface of the rear panel 18 to ensure the operator's rear field of view, as well as cleaning water discharged from the discharge nozzle 27 on the upper end side of the rear surface of the rear panel 18. By wiping, the rear panel 18 can be cleaned by removing dust and the like adhering to the rear surface of the rear panel 18.

  The lower part of the rear wall of the cabin 6 is constituted by a square-shaped rear cover 28 arranged one step ahead of the rear panel 18. The rear cover 28 is inclined forward and downward. A horizontal installation plate 29 for mounting and fixing the seat 11 is fixed between the left and right fenders 16L and 16R. The rear end of the installation plate 29 for installing the seat 11 and the above-mentioned The lower end portion of the rear cover 28 is connected and fixed by welding or bolts. Incidentally, a floor step 31 serving as a floor surface is formed one step lower in front of the installation plate 29, and a vertical midway portion of the rear wall of the cabin 6 is formed between the rear cover 28 and the rear panel 18 and the rear panel. A sub cover 32 is provided to connect 18 and the rear cover 28 together.

  In this way, the cleaning water is discharged to the front panel 17 and the rear panel 18 through the discharge nozzles 23 and 27. In order to supply the cleaning water to the discharge nozzles 23 and 27, the rear cover 28 has a rear surface side. A washer tank 33 is installed.

Next, the configuration of the washer tank 33 will be described in detail with reference to FIGS.
FIG. 6 is a side sectional view showing the configuration of the washer tank. The washer tank 33 is a light-transmitting container made of synthetic resin formed in a rectangular parallelepiped shape, and is configured so that the remaining amount of cleaning water inside can be seen through. A cap 34 is attached to the upper end of the washer tank 33 so as to be detachable. By removing the cap 34, a water supply port (not shown) of the washer tank 33 is exposed. Water can be refilled.

  The washer tank 33 configured as described above is supported and fixed to the rear surface side of the rear cover 28, which is the outside of the cabin 6, in a posture inclined rearwardly upward along the rear cover 28. The rear cover 28 has an upper rear end bent downward so as to cover a part of the upper side of the washer tank 33.

  In this way, the rear of the washer tank 33 in which substantially all of the front side and part of the upper side are covered by the rear cover 28 is covered with the tank cover (cover body) 36 and the rear cover 28 on the upper side of the washer tank 33. The portion not covered by is covered with the upper cover 37. An intermediate plate 38 is interposed between the tank cover 36 and the rear cover 28. In other words, the space S between the tank cover 36 and the rear cover 28 is separated forward and backward by the intermediate plate 38.

  The intermediate plate 38 is formed such that the lower part of the metal plate inclined rearwardly upward along the rear cover 28 is bent forward with respect to the upper part and the middle part in the entire space between the left and right fender covers 16L and 16R. It is comprised by. A fitting hole (not shown) for fitting the washer tank 33 is formed at the center of the intermediate plate 38, and the front lower end of the intermediate plate 38 is bent downward along the rear cover 28. While constituting the lower attachment portion 38a, the rear upper end portion of the intermediate plate 38 is bent rearward along the upper rear end portion of the rear cover 28 to constitute the upper attachment portion 38b.

  The attachment of the intermediate plate 38 to the rear cover 28 is performed by bringing the upper and lower attachment portions 38a and 38b into contact with the rear cover 28 and fixing them by welding or bolts. When the intermediate plate 38 is attached to the rear cover 28 in this way, a front space (space) S1 is formed between the rear cover 28 and the intermediate plate 38.

  When the washer tank 33 is fitted into the fitting hole of the intermediate plate 38 from the rear side and the rear side of the washer tank 33 is covered by the tank cover 36, the front portion of the washer tank 33 faces the space S1, The midway part and the rear part of the washer tank 33 are accommodated in a rear space S <b> 2 that is a space between the tank cover 36 and the intermediate plate 38.

  The upper cover 37 is a plate material bent in an inverted U shape in rear view along the upper surface and the left and right side surfaces of the washer tank 33, and covers the upper side of the washer tank 33 in the rear space S2. Arranged configuration. An opening 37a that exposes the cap 34 and the water supply port is formed in the upper part of the upper cover 37, and the upper cover 37 is welded to the rear surface of the intermediate plate 38 by welding or the like. Is fixedly attached to the intermediate plate 38 (cabin 6 side).

  The tank cover 36 is configured to cover the left and right side outer surfaces of the upper cover 37 and the rear surface of the washer tank 33 by forming a U shape with the front in a plan view open. The left and right front end portions of the tank cover 36 are bent outward to form mounting portions 36a and 36a. The left and right side inner surfaces of the tank cover 36 are brought into contact with and welded to the left and right side outer surfaces of the upper cover 37, and the left and right mounting portions 36 a and 36 a of the tank cover 36 are brought into contact with the intermediate plate 38. The tank cover 36 is fixedly attached to the intermediate plate 38 and the upper cover 37 (cabin 6 side) by fixing them with bolts and welding.

  The left and right side inner surfaces of the tank cover 36 are not welded to the left and right side outer surfaces of the upper cover 37, and the left and right mounting portions 36a, 36a of the tank cover 36 are bolted to the intermediate plate 38, thereby fixing the tank. The cover 36 may be configured to be detachable from the intermediate plate 38.

  The above-described washer tank 33 is attached and fixed to the rear portion of the tank cover 36 of the attachment structure with bolts, pins, or the like. Incidentally, after attaching the washer tank 33 to the tank cover 36, the assembling work of the tank cover 36 to the cabin 6 side is performed. In the lower part of the rear part of the tank cover 36, a vertical confirmation hole 36b for exposing the lower part of the rear surface of the washer tank 33 is formed. As described above, the washer tank 33 is configured so that the remaining amount of cleaning water can be seen through, so the operator can determine the remaining amount of cleaning water in the washer tank 33 through the confirmation hole 36b. I can confirm.

  Further, a cover plate 39 is attached and fixed to the rear of the cabin 6 via a support member 41. The cover plate 41 is formed in a hexagonal shape obtained by cutting the top of a regular triangle when viewed from the back, and also covers a part of the rear of the tank cover 36.

  FIG. 7 is a wiring diagram of the washer tank. Wash water in the washer tank 33 is pumped to the front and rear discharge nozzles 23 and 27 by a pump 42 constituted by an electric motor or the like. That is, a wiring 43 for electrically connecting the pump 42 on the washer tank 33 side and a battery (not shown), and a flow path for pumping the washing water from the washer tank 33 to the front and rear discharge nozzles 23 and 27 are formed. It is necessary to provide piping 44 to be used.

  As shown in FIG. 6, the pipe 44 and the wiring 43 are bundled on the front surface side of the washer tank 33 in the front space S <b> 1, and extend upward to be introduced into the cabin 6. The piping 44 and the wiring 43 introduced into the cabin 6 are extended to the roof 14 of the cabin 6 along the rear pillars 13L and 13R on the near side (the left rear pillar 13L in the illustrated example), and then are extended to necessary places. It is installed. As described above, the wiring 43 and the pipe 44 on the washer tank 33 side are accommodated and protected between the rear cover 28 and the intermediate plate 38, whereby the wiring 43 and the pipe 44 can be efficiently prevented from being damaged.

Next, another embodiment of the tractor will be described with reference to FIGS.
FIG. 8 thru | or 10 is the principal part top view, principal part side view, and principal part front sectional view which show another embodiment of a tractor. The illustrated tractor has a structure in which the cabin is omitted from the above-described example, and grips 46L and 46R having a reverse U-shape in a side view gripped at the time of getting on and off are provided in the middle of the left and right fenders 16L and 16R. Is formed. In the steering section 9 of the tractor, a steering handle 47 as a steering operation tool is disposed in front of the seat 11, and a lifting lever that can swing back and forth on one side of the seat 11 (right side in the illustrated example). 48, a shift lever 49 is supported on the other side of the seat 11 so as to be swingable back and forth, and a PTO switch 51 is provided obliquely in front of the left and right inner sides of the grip 46R on the lift lever 48 side.

  An operator seated on the seat 11 performs a lifting / lowering operation of a working machine such as a rotary tiller by swinging back and forth of the lifting lever 48 along the lever guide 52, and performs a traveling shift operation of the vehicle body by swinging the shift lever 49 back and forth. Do.

  The PTO switch 51 is a push button installed on the upper surface side of the mounting seat portion 53 that is integrally projected upward from the front lower portion of the fender 16R on the lift lever 48 side. By cutting operation, transmission of engine power to a PTO shaft (not shown) that outputs driving force to a working machine such as a rotary tiller is intermittently configured. Incidentally, the PTO shaft is configured so that it can be independently rotated even when the vehicle body is stopped running.

  The operation of the PTO switch 51 will be described. The downward operation of the PTO switch 51 is an input operation, but once the input operation is performed, the PTO switch 51 is held in the pressed state. The PTO switch 51 held in the pushed state in this way is turned in the left-right direction, so that the pushed state is released and switched to the off operation state.

  The PTO switch 51 is disposed between the lifting lever 48 and the grip 46R on the side close to the lifting lever 48 when viewed from the front, and directly below the rear end of the steering handle 47, which is the front of the lifting lever 48 when viewed from the side. Placed on the side. More specifically, the rear end portion of the steering handle 47 is positioned on an extension line in the pushing operation direction of the PTO switch 51, and the operability when turning on / off the work machine while performing the steering operation is improved. Yes.

  In addition, the mounting seat portion 53 is positioned below the tangent line passing through the grip 46R placement location in the fender 16R formed in an arcuate surface shape, and positioned behind the tangent line passing through the lower front end of the fender 16R. Therefore, the PTO switch 51 is projected obliquely upward and forward in a range that does not get in the way, thereby improving the visibility.

6 Cabin 7 Traveling machine body 9 Control section 28 Rear cover 33 Washer tank 36 Tank cover (cover body)
36b Confirmation hole 38 Intermediate plate 43 Wiring 44 Piping S space S1 Front space (space)

Claims (2)

A work vehicle including a cabin (6) that covers the control unit (9) of the traveling machine body (7) and a washer tank (33), wherein the washer tank (33) made of synthetic resin is connected to the cabin (6). A cover body (36) is provided which is disposed outside the cabin (6) and covers the rear side of the washer tank (33) by being attached to the rear surface side of the rear cover (28) constituting at least a part of the rear wall. And an intermediate plate (38) for separating the space (S) between the cover body (36) and the rear cover (28) in the front-rear direction, and a space (S1) between the intermediate plate (38) and the rear cover (28). A work vehicle in which the washer tank (33) is arranged so that the front portion of the washer tank (33) faces the vehicle, and the wiring (43) or the pipe (44) of the washer tank (33) is passed through the space (S1) . The work vehicle according to claim 1 , wherein a confirmation hole (36b) for exposing a part of a rear surface of the washer tank (33) is formed in the cover body (36) for checking the remaining amount.

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