Work vehicle

Abstract

To provide a work vehicle in which components, such as a washer tank, are properly arranged.SOLUTION: In a work vehicle, a fender 25 which covers a rear wheel 5 is provided at a cabin 16 that an operator gets in or off and a washer tank 33 configured to store a washer liquid is arranged at a position located on a rear inner wall surface 25a of the left fender 25 and close to a cabin rear surface 32. A heater tank 37 for heating the washer liquid is disposed between a cabin 16 rear surface and the washer tank 33 in a side view.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a work vehicle such as an agricultural tractor.

Background Art

[0002] A work vehicle having a washer tank installed inside between the rear wheel and the back side of the fender covering the rear wheel is known (Patent Document 1).

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] According to the configuration described in Patent Document 1, although the installation of the washer tank can effectively utilize the space between the back side of the fender and the rear wheel, when a component of a certain size is arranged in this part, mud or the like adhering to the rear wheel may scatter along the rotation direction of the rear wheel and accumulate on the side surface of the washer tank.

[0005] An object of the present invention is to provide a work vehicle in which components such as a washer tank are appropriately arranged.

Means for Solving the Problems

[0006] In order to solve the above problems and achieve the object, the invention according to claim 1 is a work vehicle provided with a fender 25 that covers a rear wheel 5 in a cabin 16 where a driver enters and exits, and a washer tank 33 that stores washer liquid is disposed on the rear inner side wall surface 25a of the left fender 25 and at a position close to the rear surface 32 of the cabin 16.

[0007] The invention according to claim 2 is the invention according to claim 1, wherein a heater tank 37 for heating the washer liquid is arranged between the rear surface 32 of the cabin 16 and the washer tank 33 in a side view.

[0008] The invention according to claim 3 is the invention according to claim 2, wherein a lower surface cover portion 35c is provided on a washer tank bracket 35 that holds the washer tank 33 so as to cover the lower surface of the washer tank 33, and a lower surface cover portion 38c is provided on a heater tank bracket 38 that holds the heater tank 37 so as to cover the lower surface of the heater tank 37.

Effect of the Invention

[0009] According to the invention described in claim 1, since the washer tank 33 is arranged in the rear space of the cabin 16, on the inner side wall surface 25a of the rear part of the left fender 25 and at a position close to the rear surface 32 of the cabin 16, it is difficult for mud during running to intrude while avoiding an increase in vehicle width.

[0010] According to the invention described in claim 2, in addition to the effect described in claim 1, although it is essential to prevent breakage for preventing danger of the heater tank 37, since the heater tank 37 is arranged between the rear surface 32 of the cabin 16 and the washer tank 33 in a side view, it is possible to prevent mud from scattering from the rear.

[0011] According to the invention described in claim 3, in addition to the effect described in claim 2, by providing the lower surface cover portion 35c on the washer tank bracket 35, the lower side of the washer tank 33 can be protected. Also, by providing the lower surface cover portion 38c on the heater tank bracket 38, the lower side and the front side in the vehicle body traveling direction of the heater tank 37 can be protected by the lower surface cover portion 38c and the heater tank bracket 38.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

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Figure 12

Mode for Carrying Out the Invention

[0013] Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

[0014] Figures 1 to 4 show a tractor. A diesel engine E is installed inside the bonnet 2 at the front of the running vehicle body 1. The rotational power of this engine E is transmitted to a transmission in the transmission case 3, and the rotational power decelerated by this transmission is transmitted to the front wheels 4 and the rear wheels 5. A steering wheel 6 for steering the front wheels 4 is equipped behind the engine E, and further, a driver's seat 7 is installed behind it. An hydraulic cylinder case 8 is provided at the rear upper part of the transmission case 3, and lift arms 9 that form part of the hydraulic lifting mechanism are rotatably attached to both the left and right sides of this cylinder case 8. The lift arm 9 moves up and down by the telescopic operation of the hydraulic cylinder 10 for lifting. At the rear of the vehicle body, a three-point link mechanism composed of a top link 11 and left and right lower links 12 is provided. A rotary working machine R is attached to the link mechanism, and by connecting the lower link 12 to the lift arm 9 via a lift rod 13, the working machine R is configured to be able to be lifted and lowered.

[0015] The steering wheel 6, the driver's seat 7, etc. are covered by a cabin 16. The cabin 16 is fixed to the vehicle body via an elastic member such as anti-vibration rubber, making it difficult for the vibration of the vehicle body to be transmitted to the cabin 16.

[0016] The cabin 16 has a frame structure integrated by a floor 17, front struts 18 erected on the left and right front parts of the floor 17, rear struts 19 erected on the left and right of the rear part of the driver's seat 7, intermediate struts 20 erected in the middle part between the front and the rear, and an upper frame 21 connecting the upper ends of these struts, and is covered by a roof 22. And, a box-shaped seat frame 23 that supports the driver's seat 7, a rear plate 24 surrounding the rear surface of the driver's seat 7, left and right fenders 25 covering the upper parts of the rear wheels 5, etc. are rigidified to ensure strength. Further, glass window parts are formed on the front and rear side surfaces, and can be lifted and lowered from the left and right opening and closing door parts 26.

[0017] At the rear of the cabin 16, a rear glass window 30 is provided. This rear glass window 30 has a known configuration that can open and close the rear surface of the cabin 16 by pivoting downward and rearward with the upper part as a fulcrum. The lower window frame portion 31 of the rear glass window 30 is provided by appropriately bending a sheet metal material and spanning between the left and right fenders 25, also serving as reinforcement. And further below this lower window frame portion 31, a fixed rear glass 32 is provided on the rear plate 24 to partition the inside and outside of the cabin 16.

[0018] A washer tank 33 for accommodating washer fluid for, for example, the front glass window and the rear glass window 30 is arranged on one of the left and right fenders 25 (the left side in the illustrated example). Specifically, mounting pieces 33b, 33b are formed before and after a washer tank body 33a made of resin with a cap 34 covering an opening on the upper surface and having a substantially rectangular upper side with an upward curved shape in side view. It is configured to be bolted to a washer tank bracket 35. The washer tank bracket 35 is formed in a U-shape in plan view and is configured such that the mounting pieces 33b, 33b can be superposed on the front and rear bent pieces 35b, 35b and bolted with bolts 36a. Also, a lower guard piece 35c is formed to cover the lower part of the washer tank 33. And the washer tank bracket 35 is detachably fastened to the inner wall surface 25a at the rear of the left fender 25 and as close as possible to the fixed rear glass 32 with bolts 36b. In this way, by arranging it at the corner, the adhesion of mud splashing from the side can be reduced.

[0019] Near the washer tank 33, a heater tank 37 for heating the washer liquid is provided. That is, the heater tank 37, which has a built-in heater (not shown) and can heat the introduced washer liquid, is mounted on the lower window frame portion 31 of the rear glass window 30 by a heater tank bracket 38. The heater tank bracket 38 has a U-shaped concave portion 38a formed at the left and right center in plan view, and mounting planes 38b, 38b are formed at the left and right portions, and it is appropriately fastened to the rear window frame portion 31. A vertically long cylindrical heater tank 37 is positioned in the concave portion 38a of the heater tank bracket 38, and bolts 39, 39,... are used to fasten the upper, lower, left, and right mounting pieces 37a, 37a,... provided on the tank 37 to the mounting planes 38b, 38b. Therefore, the heater tank 37 is arranged between the rear surface of the cabin 16 and the washer tank 33 in side view.

[0020] By the way, the washer liquid is sent from the washer tank 33 through the hose 40 into the internal space of the heater tank 37, where it is heated by a heater (not shown). The heated washer liquid is supplied to a washer nozzle (not shown) through a hose (not shown) and is sprayed toward the wiper wiping range on the front glass window, rear glass window 30, etc.

[0021] As described above, since the washer tank 33 is arranged on the rear inner wall surface 25a of the left fender 25 in the rear space of the cabin 16, it is difficult for mud during running to invade while avoiding an increase in vehicle width. Also, by arranging it as close as possible to the fixed rear glass 32 on the rear surface of the cabin, mud invasion can be more effectively prevented. Note that as the rear surface of the cabin, in the above example, the fixed rear glass 32 is used, but it may be replaced with a sheet metal partition wall.

[0022] Also, to prevent damage for the purpose of preventing danger to the heater tank 37 to be heated, since the heater tank 37 is arranged between the rear surface of the cabin 16 and the washer tank 33 in side view as described above, it is in an appropriate position to suppress mud scattering from the rear.

[0023] The washer tank bracket 35 is provided with a bottom cover portion 35c so as to cover the bottom surface of the washer tank 33. Thereby, the lower side of the washer tank 33 can be protected.

[0024] Further, the heater tank bracket 38 is provided with a bottom cover portion 38c so as to cover the bottom surface of the heater tank 37. The lower side and the front side in the vehicle body traveling direction of the heater tank 37 can be protected mainly by the bottom cover portion 38c, the recessed portion 38a of the heater tank bracket 38, and the lower half portions of the mounting planes 38b, 38b.

[0025] FIG. 5 shows the mounting configuration of the fixed rear glass 32 at the rear of the cabin. When viewed from inside the cabin 16, the glass 32 is detachably provided in the opening 41 of the rear plate 24. That is, the glass 32 is fixed by detachable holding brackets 24a, 24a above and below the opening 41 of the rear plate 24. And a water intrusion prevention grommet 42 is attached by cutting out the opening 41. When routing the cable of the working machine R, the conical portion 42a or the tip portion 42b of the grommet 42 is cut or an insulator made of a rubber sponge material is processed and routed.

[0026] Next, based on FIGS. 6 to 8, the mounting configuration of the so-called over fender will be described. The over fender 45 is mounted on the outer side of each of the left and right fenders 25 and is adapted to wide tires. In order to be configured to be compatible with both the standard specification and the over fender specification, the over fender 45 needs to be configured to be detachable from the fender 25 (hereinafter, the standard fender 25). Mounting pieces 46, 46... are arranged on the over fender 46 at appropriate intervals. This mounting piece 46 is configured to be fastened to the fixing pieces 47, 47... of the standard fender 25 with bolts or the like.

[0027] The attachment pieces 46 are set in a plurality of types according to the form of the fixing pieces 47. Taking a specific example, the attachment piece 46a on the over fender 45 side has a rectangular structure in side view, presents a reinforcing structure, and is of the first type bolted to the fixing piece 47a on the standard fender 25 side (Fig. 8(A)); one end is appropriately fixed to the over fender 45, and the strip-shaped attachment piece 46b is appropriately bent and formed, and is of the second type bolted to the fixing piece 47b on the standard fender 25 side (Fig. (B)); the strip-shaped attachment piece 46c having the same form as the strip-shaped attachment piece 46b and the fixing piece 47c appropriately bent in a strip shape from the standard fender 25 side are bolted together, which is of the third type (Fig. (B)(C)); the attachment piece 46d provided at the end of the over fender 45 and having an L-shaped bent and reinforcing structure and the L-shaped fixing piece 47d on the standard fender 25 side are bolted together, which is of the fourth type (Fig. (D)). The first type and the fourth type adopt a reinforcing structure and are responsible for the configuration of the end of the over fender 45. Incidentally, each of the attachment piece 46 and the fixing piece 47 is fixed to the over fender 45 and the standard fender 25 by means such as welding.

[0028] Next, based on Figs. 9 to 11, the support portion configuration of the cabin 16 will be described. At the rear portion of the cabin 16, the left and right mounting brackets 51 are fixed to the left and right rear axle cases 50 of the vehicle body, and the lower end brackets 53 of the cabin rear support frame 52 are superposed on the mounting brackets 51 and fixed by fixing bolts 54. Mounting rubbers 55 formed as ridges are interposed at four locations on the surface of the mounting bracket 51 in the front, rear, left, and right directions to receive the lower end brackets 53. The ridges 55b arranged on the left and right are set higher than the ridges 55a arranged in the front and rear.

[0029] Next, based on Fig. 12, the frame configuration for air conditioner arrangement in the cabin will be described. At the upper portion of the rear pillar 19 of the cabin 16, the position of the upper frame 21r connecting between the left and right rear pillars 19 is configured to be lower than the upper frame 21s provided on the side of the upper frame 21. A sheet metal panel 57 for storing the air conditioner unit 56 is arranged behind the upper frame 21r. The upper edge of this sheet metal panel 57 is configured to substantially coincide with the height of the upper frame 21s on the side.

Description of Reference Numerals

[0030] 5 Rear wheels 16 Cabin 25 Fender 33 Washer tank 25a Rear inner wall surface 32 Fixed rear glass (rear of cabin) 37 Heater tank 35 Washer tank bracket 35c Bottom cover part 38 Heater tank bracket 38c Bottom cover part

Claims

1. In a work vehicle provided with a fender (25) that covers a rear wheel (5) in a cabin (16) where a driver enters and exits, a washer tank (33) for storing washer fluid is disposed on the rear inner wall surface (25a) of the fender (25) and at a position close to the rear surface (32) of the cabin (16). The work vehicle is characterized by this arrangement.

2. The work vehicle according to Claim 1, wherein a heater tank (37) for heating the washer fluid is disposed between the rear surface (32) of the cabin (16) and the washer tank (33) in a side view.

3. A lower surface cover portion (35c) is provided on a washer tank bracket (35) that holds the washer tank (33) so as to cover the lower surface of the washer tank (33), and a lower surface cover portion (38c) is provided on a heater tank bracket (38) that holds the heater tank (37) so as to cover the lower surface of the heater tank (37). The work vehicle according to Claim 2 is thus configured.

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