Working vehicle

Abstract

To improve production efficiency when a plurality of wires is connected across operation levers and units to be operated, in a working vehicle.SOLUTION: A working vehicle is provided with a plurality of operation levers 26 and 27 allowed to be artificially operated and a plurality of units to be operated 14, 15, and 16. The working vehicle is provided with wires 47, 48, and 49 which are connected across the operation levers 26 and 27 and the units to be operated 14, 15, and 16 and transmit operations of the operation levers 26 and 27 to the units to be operated 14, 15, and 16, so that the units to be operated 14, 15, and 16 are operated. The working vehicle is provided with a common support member 40 to which end parts closer to the operation levers 26 and 27 of the wires 47, 48, and 49 are attached.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a configuration of an operating lever in a work vehicle. [Background technology]

[0002] As disclosed in Patent Document 1, a work vehicle is equipped with multiple operable parts, such as a transmission for driving, a rear wheel differential, and a front wheel transmission device that controls the power to the front wheels to be transmitted or cut off to set four-wheel drive or two-wheel drive.

[0003] The work vehicle of Patent Document 1 is provided with multiple operating levers, and multiple wires are connected between the operating levers and the operated parts. When a worker operates the operating levers, the operated parts are operated via the wires. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-154952 Summary of the Invention [Problem to be solved by the invention]

[0005] When multiple wires are connected between the operating lever and the operated part, multiple wires are attached to the work vehicle, and therefore there is a demand for improved production efficiency. The present invention aims to improve production efficiency when a plurality of wires are connected between an operating lever and an operated part in a work vehicle. [Means for solving the problem]

[0006] The work vehicle of the present invention is provided with a plurality of operating levers that can be operated manually, a plurality of operated parts, a plurality of wires that are connected between the operating levers and the operated parts and transmit the operation of the operating levers to the operated parts so that the operated parts are operated, and a common support member to which the ends of the plurality of wires on the operating lever side are attached.

[0007] In a work vehicle, when multiple wires are connected between an operating lever and an operated part, the multiple operating levers are often arranged close to each other so that they can be operated by a single worker, and therefore the ends of the multiple wires on the operating lever side are also often arranged close to each other.

[0008] According to the present invention, the ends of the multiple wires on the operating lever side are attached to a common support member, and by attaching the support member to which the multiple wires are attached to the work vehicle, the multiple wires can be easily attached together to the work vehicle. As mentioned above, since the ends of the multiple wires on the operating lever side are arranged close to each other, even if the support member is relatively small, the ends of the multiple wires on the operating lever side can be attached to the support member, making it easy to handle the relatively small support member. As described above, the fact that a plurality of wires can be easily attached to a work vehicle together using the support member, and the fact that the support member is relatively small and easy to handle, makes it possible to improve production efficiency.

[0009] In the present invention, it is preferable that the support member has a base plate portion and a plurality of outer attachment portions attached to the base plate portion and to which the end portion of the outer of the wire on the operating lever side is attached.

[0010] According to the present invention, the support member is configured such that a plurality of outer mounting portions are attached to a base portion, whereby the operating lever side ends of the outer portions of the plurality of wires are attached to the outer mounting portions of the support member, and the plurality of wires can be easily attached together to the work vehicle, which is advantageous in terms of improving production efficiency.

[0011] In the present invention, it is preferable that the outer mounting portion extends from the base portion toward the operating lever, and that an opening through which the wire, the end of which is attached to the outer mounting portion, passes is provided in the base portion.

[0012] According to the present invention, the end of the outer wire on the operating lever side is supported by being attached to the outer mounting portion of the support member, and the wire is supported by passing through an opening in the base portion of the support member. This allows the wire to be stably supported by the support member, making it easy to attach multiple wires together to the work vehicle, which is advantageous in terms of improving production efficiency.

[0013] In the present invention, it is preferable that a plurality of the operating levers are provided along the vertical direction, and a plurality of the outer mounting portions are attached to the base portion along the vertical direction.

[0014] According to the present invention, when multiple operating levers are arranged along the vertical direction, the multiple outer mounting portions of the support member are also attached to the base portion of the support member along the vertical direction, making it easier to arrange the wire in a straight line between the operating levers and the outer mounting portions of the support member, thereby reducing bending of the wire. This prevents the operation of the operating lever from being difficult to transmit to the operated part due to bending of the wire, thereby improving the operability of the operating lever. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. [Figure 2]FIG. 2 is a rear view of the vicinity of the gear shift lever and the switching lever. [Figure 3] FIG. 2 is a left side view of the vicinity of the shift lever, the switching lever, and the support member. [Figure 4] FIG. 2 is a right side view of the vicinity of the shift lever, the switching lever, and the support member. [Figure 5] FIG. 2 is a plan view of the vicinity of the shift lever, the switching lever, and the support member. [Figure 6] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0016] Figures 1 to 6 show a multipurpose work vehicle, which is an example of a work vehicle, and in Figures 1 to 6, F indicates the forward direction, B indicates the backward direction, U indicates the upward direction, D indicates the downward direction, R indicates the right direction, and L indicates the left direction.

[0017] (Overall configuration of the work vehicle) As shown in Figure 1, right and left front wheels 1 are provided at the front of the machine body 3, and right and left rear wheels 2 are provided at the rear of the machine body 3, and the machine body 3 is supported by the front wheels 1 and the rear wheels 2. The machine body 3 has a floor frame 4, a rope frame 5, a rear frame 6, a lower frame 7, etc.

[0018] A floor frame 4 is provided at the bottom of the fuselage 3, and a driver's seat 8 and a passenger seat 9 are provided on the floor frame 4 side by side in the left-right direction. A ROP frame 5 is connected to the floor frame 4 so as to surround the driver's seat 8 and the passenger seat 9.

[0019] Right and left doors 10 are attached so as to be able to open and close to the right part 5a and left part 5b of the ROPs frame 5. A rear frame 6 and a lower frame 7 are connected to the rear part of the ROPs frame 5 and extend rearward, and a cargo bed 11 is provided on the rear frame 6.

[0020] (Configuration of the traveling transmission system) As shown in FIG. 1, an engine 12, a continuously variable transmission 13, a transmission case (not shown), and a rear wheel 2 are mounted on a lower frame 7. As shown in Figure 3, inside the transmission case, there are provided a gear-shift type sub-transmission device 14 (corresponding to the operated part) that can be shifted to two forward speeds and one reverse speed, a rear wheel differential device 15 (corresponding to the operated part), and a front wheel transmission device 16 (corresponding to the operated part).

[0021] The power of the engine 12 is transmitted to the continuously variable transmission 13 and changed in speed, then transmitted from the continuously variable transmission 13 to the auxiliary transmission 14 and changed in speed, then transmitted from the auxiliary transmission 14 to the rear wheel differential device 15, and then transmitted from the rear wheel differential device 15 to the rear wheels 2. The power branched between the auxiliary transmission 14 and the rear wheel differential device 15 is transmitted to the front wheels 1 via the front wheel transmission device 16.

[0022] When the front wheel transmission 16 is operated to the four-wheel drive state, power branched between the sub-transmission 14 and the rear wheel differential 15 is transmitted to the front wheels 1, resulting in a four-wheel drive state in which the front wheels 1 and the rear wheels 2 are driven. When the front wheel transmission 16 is operated to the two-wheel drive state, power is cut off at the front wheel transmission 16, resulting in a two-wheel drive state in which the rear wheels 2 are driven.

[0023] (Configuration of the front of the driver's seat 8 and passenger seat 9) - 1 1 and 2, the first horizontal frame 21 is provided at a position higher than the floor frame 4 and is connected along the left-right direction across the right section 5a and left section 5b of the ROPs frame 5. The second horizontal frame 22 is provided at a position higher than the first horizontal frame 21 and is connected along the left-right direction across the right section 5a and left section 5b of the ROPs frame 5.

[0024] The right and left vertical frames 24 are connected in the up-down direction between the left portion of the first horizontal frame 21 and the left portion of the second horizontal frame 22, and are provided in front of the driver's seat 8. The third horizontal frame 23, which is channel-shaped in plan view, is connected in the left-right direction between the right portion 5a of the ROPs frame 5 and the right vertical frame 24.

[0025] 2, 3, and 4, a base member 20 is provided, and a steering handle 25, a gearshift lever 26 (corresponding to an operating lever), a switching lever 27 (corresponding to an operating lever), and a parking lever 28 are attached to the base member 20 as described below. The base member 20 is attached to a vertical frame 24.

[0026] As a result, the steering handle 25, the gearshift lever 26, the selector lever 27, and the parking lever 28 are attached to the vertical frame 24 via the base member 20 and are provided in front of the driver's seat 8. The gearshift lever 26 and the selector lever 27 are provided along the vertical direction in a rear view, and along the longitudinal direction in a plan view. The parking lever 28 is provided to the right of the gearshift lever 26.

[0027] As shown in Figure 1, an operation panel 18 made of synthetic resin is attached to a first horizontal frame 21, a second horizontal frame 22, and a third horizontal frame 23, and a control handle 25, a gear shift lever 26, a switching lever 27, and a parking lever 28 pass through openings in the operation panel 18 and extend outside the operation panel 18.

[0028] As shown in FIG. 2, an accelerator pedal 29 and a brake pedal 30 are provided below the left portion of the operation panel 18. Two auxiliary handles 19 are provided side by side in the left-right direction at the center and right (forward of the passenger seat 9) of the operation panel 18. With the operation panel 18 sandwiched between the third horizontal frame 23 and the auxiliary handles 19, the third horizontal frame 23, the operation panel 18, and the auxiliary handles 19 are fastened together and connected by bolts.

[0029] (Configuration of the front of the driver's seat 8 and passenger seat 9) - 2 1, 2, and 3, the continuously variable transmission 13 is configured as a belt-type continuously variable transmission. When the rotation speed of the engine 12 increases as a result of depressing the accelerator pedal 29, the continuously variable transmission 13 is automatically operated to a higher speed. When the rotation speed of the engine 12 decreases as a result of releasing the accelerator pedal 29, the continuously variable transmission 13 is automatically operated to a lower speed.

[0030] The front wheels 1 are steered using a steering handle 25. The sub-transmission 14 of the transmission case is operated to two forward speeds and one reverse speed using a gearshift lever 26. The rear wheel differential 15 is operated to a differential operating state or a differential locked state using a switching lever 27, and the front wheel transmission 16 is operated to a four-wheel drive state or a two-wheel drive state.

[0031] Brakes (not shown) capable of braking the front wheels 1 and rear wheels 2 are provided, and the brakes are operated into a braking state by stepping on a brake pedal 30. A parking brake device 17 is provided, and the parking brake device 17 is operated by operating a parking lever 28, and the brakes are maintained in a braking state.

[0032] (Support structure for the gear shift lever 26, the switching lever 27, and the parking lever 28) 3, 4, and 5, a bracket 31 is connected to the base member 20, and an operating shaft 32 is attached to the bracket 31 so as to be swingable about an axis P1 extending in the left-right direction. A bracket 32a and an arm 32b are connected to the operating shaft 32.

[0033] The shift lever 26 is attached to a bracket 32a of the operating shaft 32 so as to be swingable about an axis P2 that extends in the vertical direction. A lever guide 33 is connected to the base member 20, and the shift lever 26 passes through an opening in the lever guide 33 and protrudes rearward. As will be described later, a wire 47 is connected between the shift lever 26 and the subtransmission device 14.

[0034] A bracket 34 is connected to the base member 20, and an arm 35 is attached to the bracket 34 so as to be swingable about an axis P3 that extends in the left-right direction. A switching lever 27 is attached to the arm 35 so as to be swingable about an axis P4 that extends in the up-down direction. A lever guide 36 is connected to the base member 20, and the switching lever 27 passes through an opening in the lever guide 36 and extends rearward. As will be described later, wires 48, 49 are connected between the switching lever 27 and the rear wheel differential device 15 and the front wheel transmission device 16.

[0035] A bracket 37 is connected to the base member 20, and the parking lever 28 is attached to the bracket 37 so as to be swingable about an axis P5 along the left-right direction. As will be described later, a wire 50 is connected between the parking lever 28 and the parking brake device 17.

[0036] (Configuration of the support member 40 to which the wires 47, 48, and 49 are attached) 2, a front panel 38 is attached across the floor frame 4, the right and left portions 5a and 5b of the ROP frame 5, and the second horizontal frame 22. The front panel 38 separates the area behind the second horizontal frame 22 (the area of ​​the driver's seat 8 and passenger seat 9) from the area in front of the second horizontal frame 22.

[0037] 3 and 4, a support member 40 is provided and attached to a portion of the front panel 38 in front of the base member 20. As shown in FIG. 6, the support member 40 has base portions 41 and 42, outer attachment portions 43, 44 and 45, and a wire support portion 46.

[0038] The base plate 41 is formed in a flat plate shape and has a rectangular opening 41a. The base plate 42 is attached to the base plate 41 so as to close the opening 41a of the base plate 41, and the base plates 41 and 42 are attached to the front panel 38.

[0039] The outer mounting portions 43 and 44 are attached to the base plate portion 42 and extend rearward (toward the base plate member 20) from the base plate portion 42. The outer mounting portion 45 is attached to the base plate portion 41 and extends rearward (toward the base plate member 20) from the base plate portion 41.

[0040] An opening 42a is provided in the base plate portion 42 in front of the outer mounting portion 43, and an opening 42b is provided in the base plate portion 42 in front of the outer mounting portion 44. A wire support portion 46 made of hard rubber or synthetic resin is attached to the openings 42a and 42b of the base plate portion 42.

[0041] In the support member 40 (base plate portions 41, 42), outer mounting portions 43, 44 are provided along the vertical direction in rear view. In rear view, the outer mounting portion 45 is provided slightly to the right and to the side from the portion between the outer mounting portions 43 and 44.

[0042] (Configuration of the wire 47 connected between the shift lever 26 and the sub-transmission device 14) 3, 4, 5, and 6, a push-pull type wire 47 is provided. The wire 47 is supported by being passed through an opening 42a and a wire support portion 46 of the support member 40 (base plate portion 42), and the end of an outer 47b of the wire 47 that faces the shift lever 26 is attached to the outer attachment portion 43 of the support member 40. The end of an inner 47a of the wire 47 that faces the shift lever 26 is attached to the arm 32b of the operating shaft 32.

[0043] A wire 47 extends downward from the support member 40 and then extends rearward along the floor frame 4. An end of an inner portion 47a of the wire 47 opposite to the shift lever 26 is attached to the sub-transmission device 14.

[0044] When the speed change lever 26 is operated up and down along the lever guide 33, the inner 47a of the wire 47 is pushed or pulled via the arm 32b of the operating shaft 32, and the sub-transmission device 14 is operated to a high-speed forward position, a low-speed forward position, a neutral position, or a reverse position.

[0045] (Configuration of wires 48, 49 connected between the switching lever 27 and the rear wheel differential device 15 and the front wheel transmission device 16) 3, 4, 5 and 6, a wire 48 is provided. An arm 27a is attached to the switching lever 27, and the arm 27a swings integrally with the switching lever 27 around an axis P4.

[0046] A wire 48 is passed through the opening 42b of the support member 40 (base plate portion 42) and the wire support portion 46 to be supported, and an end portion of the outer portion 48b of the wire 48 on the switching lever 27 side is attached to the outer attachment portion 44 of the support member 40. An end portion of the inner portion 48a of the wire 48 on the switching lever 27 side is attached to the arm 27a of the switching lever 27.

[0047] A wire 48 extends downward from the support member 40 and then extends rearward along the floor frame 4. An end of an inner portion 48a of the wire 48 opposite the switching lever 27 is attached to the rear wheel differential device 15.

[0048] A push-pull type wire 49 is provided. An end of an inner portion 49a of the wire 49 on the switching lever 27 side is attached to the arm 35. An end of an outer portion 49b of the wire 49 on the switching lever 27 side is attached to an outer attachment portion 45 of the support member 40.

[0049] A wire 49 extends downward from the support member 40 and then extends rearward along the floor frame 4. An end of an inner portion 49a of the wire 49 opposite the switching lever 27 is attached to the rear-front wheel transmission device 16.

[0050] As the switching lever 27 is operated left and right above the lever guide 36, the inner 48a of the wire 48 is pushed and pulled by the arm 27a of the switching lever 27. As a result, with the front wheel transmission device 16 operated to the four-wheel drive state, the rear wheel differential device 15 is operated to the differential operating state and the differential locked state.

[0051] By operating the switching lever 27 up and down along the lever guide 36, the arm 35 is operated up and down around the axis P3, and the inner 49a of the wire 49 is pushed or pulled. As a result, with the rear wheel differential device 15 operated to the differential operating state, the front wheel transmission device 16 is operated to the four-wheel drive state or the two-wheel drive state.

[0052] (Configuration of the wire 50 connected between the parking lever 28 and the parking brake device 17) 3, 4, and 5, a bracket 39 is attached to the base member 20. An opening 38a is provided in the front panel 38 in the right portion of the base member 20, and a wire support part 46 made of hard rubber or synthetic resin is attached to the opening 38a in the front panel 38.

[0053] A wire 50 is provided. The wire 50 is passed through the opening 38a in the front panel 38 and the wire support portion 46 and is supported, and the end of the outer portion 50b of the wire 50 on the parking lever 28 side is attached to a bracket 39 of the base member 20. The end of the inner portion 50a of the wire 50 on the parking lever 28 side is attached to the parking lever 28.

[0054] A wire 50 extends downward from the opening 38a of the front panel 38 and the wire support portion 46, and the end of the inner portion 50a of the wire 50 opposite the parking lever 28 is attached to the parking brake device 17. When the parking lever 28 is operated back and forth, the inner portion 50a of the wire 50 is pushed or pulled, and the parking brake device 17 is operated.

[0055] (First Alternative Embodiment of the Invention) The wire 50 of the parking lever 28 may be attached to the support member 40 .

[0056] (Second Alternative Embodiment of the Invention) A wire may be attached to each of the three operating levers, and the three wires may be attached to the support member 40. A wire may be attached to each of the two operating levers, and the two wires may be attached to the support member 40. A wire may be attached to each of the four operating levers, and the four wires may be attached to the support member 40.

[0057] (Third Alternative Embodiment of the Invention) The operated part may be a continuously variable transmission 13, or a hydrostatic type continuously variable transmission 13 for traveling. The operated part may be a hood opening / closing operating part (not shown).

[0058] (Correspondence to claims)-1 The vehicle is provided with a plurality of manually operable operating levers (speed change lever 26, switching lever 27) and a plurality of operated parts (sub-transmission device 14, rear wheel differential device 15, front wheel transmission device 16).

[0059] A plurality of wires 47, 48, 49 are provided which are connected between the operating levers (speed change lever 26, switching lever 27) and the operated parts (auxiliary transmission 14, rear wheel differential device 15, front wheel transmission device 16) and transmit the operation of the operating levers (speed change lever 26, switching lever 27) to the operated parts (auxiliary transmission device 14, rear wheel differential device 15, front wheel transmission device 16) so that the operated parts (auxiliary transmission device 14, rear wheel differential device 15, front wheel transmission device 16) are operated. A common support member 40 is provided to which the ends of the plurality of wires 47, 48, 49 on the operating lever (gearshift lever 26, switching lever 27) side are attached.

[0060] (Correspondence to claims)-2 The support member 40 has base plate portions 41, 42 and a plurality of outer mounting portions 43, 44, 45 attached to the base plate portions 41, 42 and to which the ends of the outer portions 47b, 48b, 49b of the wires 47, 48, 49 on the operating lever (speed change lever 26, switching lever 27) side are attached.

[0061] The outer attachment portions 43, 44, 45 extend from the base plate portions 41, 42 toward the operation levers (the gearshift lever 26, the switching lever 27). Openings 42a, 42b are provided in the base portions 41, 42, through which wires 47, 48 pass, with the ends of outers 47b, 48b attached to outer attachment portions 43, 44.

[0062] A plurality of operating levers (speed change lever 26, switching lever 27) are provided along the vertical direction. A plurality of outer mounting portions 43, 44 are attached to base portions 41, 42 along the vertical direction. [Industrial Applicability]

[0063] The present invention can be applied not only to work vehicles with front wheels 1 and rear wheels 2, but also to work vehicles with front wheels 1 and rear crawler running devices (not shown), and also to work vehicles that do not have front wheels 1 and rear wheels 2 but have right and left crawler running devices. [Explanation of symbols]

[0064] 14 Auxiliary transmission (operated part) 15 Rear wheel differential device (operated part) 16 Front wheel transmission device (operated part) 26 Shift lever (operating lever) 27 Switching lever (operating lever) 40 Support member 41 Circuit board 42 Circuit board 42a opening 42b opening 43 Outer mounting part 44 Outer mounting part 45 Outer mounting part 47 Wire 47b Outerwear 48 wires 48b outerwear 49 wires 49b Outerwear

Claims

1. A plurality of operating levers that can be manually operated; A plurality of operated units; a plurality of wires are provided which are connected between the operating lever and the operated portion and transmit the operation of the operating lever to the operated portion so that the operated portion is operated; A work vehicle provided with a common support member to which the ends of the plurality of wires on the operating lever side are attached.

2. The support member is A substrate portion; 2. The work vehicle according to claim 1, further comprising a plurality of outer mounting portions attached to the base portion and to which the end of the outer wire on the side of the operating lever is attached.

3. the outer mounting portion extends from the base plate portion toward the operating lever, The work vehicle according to claim 2 , wherein an opening through which the wire passes is provided in the base plate portion, the end of the outer being attached to the outer attachment portion.

4. The operating levers are provided along the vertical direction, The work vehicle according to claim 2 , wherein a plurality of the outer mounting portions are mounted on the base portion along the vertical direction.

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