Work vehicle

Abstract

To provide a work vehicle which forms a large space on the upper side of a floor, and reduces oppressive feeling felt by an operator when the work vehicle is operated.SOLUTION: The upper part of a rear wheel (3) is covered with a fender (30), a side panel (31) provided with an operation lever (42) for operating a front loader (10) is disposed between the right part of an operator's seat (20) of an operation part (5) and the fender (30) positioned on the right side, and the front part of the side panel (31) is arranged so as to be on the rear side of the front part of the fender (30) in plane view.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a work vehicle equipped with a front loader. [Background technology]

[0002] A conventional technology is known in which an accelerator pedal for increasing or decreasing the travel speed of the work vehicle is provided on the right side of the floor of the control section, and a side panel on which an operating lever for operating the lifting and lowering of the front loader is located is provided between the right side of the control seat and the fender covering the rear wheels (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-166815 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, because the front portion of the side panel extends further forward than the front portion of the fender and into the space formed above the floor, the worker may feel a sense of pressure and there is a risk that the worker's foot may come into contact with the front portion of the side panel when pressing the accelerator pedal.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a work vehicle in which a large space is formed above the floor, thereby reducing the sense of oppression felt by the worker when operating the work vehicle. [Means for solving the problem]

[0006] The present invention which has solved the above problems is as follows. That is, the invention described in claim 1 is a work vehicle having a front loader (10) provided at the front of a machine frame (1), a pair of left and right front wheels (2) provided at the front of the lower side of the machine frame (1) and a pair of left and right rear wheels (3) provided at the rear, a bonnet (4) for storing an engine provided at the front of the upper side of the machine frame (1) and a control section (5) for an operator to ride on provided at the rear, This work vehicle is characterized in that the upper parts of the rear wheels (3) are covered with fenders (30), a side panel (31) on which an operating lever (42) for operating the front loader (10) is located is provided between the fenders (30) located on the right side of the operator's seat (20) of the operating section (5), and the front part of the side panel (31) is positioned rearward of the front part of the fenders (30) in a plan view.

[0007] A second aspect of the present invention provides the work vehicle according to the first aspect, wherein a front portion (31A) of the side panel (31) is formed lower than a rear portion (31B) in a side view.

[0008] The invention described in claim 3 is a work vehicle described in claim 1 or 2, in which a speed change lever (41) for increasing or decreasing the rotational speed of the rear wheel (3) is inserted into a guide groove (33) extending in the fore-and-aft direction of the front side portion (31A), the operating lever (42) is inserted into the front portion (34) of the rear side portion (31B), and the operating lever (42) is positioned to the right of the speed change lever (41) in a plan view.

[0009] The invention described in claim 4 is the work vehicle described in claim 3, wherein an upper surface of the front portion (34) is formed to be inclined downward to the right in front view, and the upper surface of the front portion (34) is formed to be inclined downward to the front in side view, and the operating lever (42) extends in a direction perpendicular to the upper surface of the front portion (34). It is.

[0010] The invention described in claim 5 provides the work vehicle described in claim 4, wherein when the operating lever (42) is tilted in the front-to-rear direction, the bucket (11) of the front loader (10) rises and falls, and when the operating lever (42) is tilted in the left-to-right direction, the front part of the bucket (11) swings up and down.

[0011] A sixth aspect of the present invention is the work vehicle according to the fifth aspect, further comprising a lock mechanism provided on the left wall of the side panel (31) for restricting operation of the operating lever (42).

[0012] A seventh aspect of the present invention is the work vehicle according to the sixth aspect, wherein an armrest (36) on which an operator can rest his or her elbows is formed rearward of the front portion (34) of the side panel (31). Effect of the Invention

[0013] According to the invention described in claim 1, the upper part of the rear wheels (3) is covered with a fender (30), a side panel (31) on which an operating lever (42) for operating the front loader (10) is arranged is provided between the fenders (30) located on the right side of the operator's seat (20) of the control section (5), and the front part of the side panel (31) is arranged rearward of the front part of the fender (30) in a plan view, so that the front part of the side panel (31) is prevented from extending above the floor on which the operator places his / her legs, thereby forming a large space above the floor. Also, the feeling of oppression felt by the operator seated in the operator's seat (20) can be reduced.

[0014] According to the invention recited in claim 2, in addition to the effects of the invention recited in claim 1, the front portion (31A) of the side panel (31) is formed lower than the rear portion (31B) in a side view, so that a larger space can be formed above the floor, and the feeling of oppression can be further reduced.

[0015] According to the invention described in claim 3, in addition to the effects of the invention described in claim 1 or 2, the shift lever (41) for increasing or decreasing the rotational speed of the rear wheel (3) is inserted into the guide groove (33) extending in the fore-and-aft direction of the front side portion (31A), the operating lever (42) is inserted into the front portion (34) of the rear side portion (31B), and the operating lever (42) is positioned to the right of the shift lever (41) in a plan view. This makes it possible to prevent an operator from accidentally coming into contact with the shift lever (41) while operating the operating lever (42).

[0016] According to the invention of claim 4, in addition to the effects of the invention of claim 3, the upper surface of the front portion (34) is inclined downward to the right in front view, and the upper surface of the front portion (34) is inclined downward to the front in side view, and the operating lever (42) extends perpendicular to the upper surface of the front portion (34), thereby further preventing accidental contact with the gear shift lever (41).

[0017] According to the invention recited in claim 5, in addition to the effect of the invention recited in claim 4, when the operating lever (42) is tilted in the forward / backward direction, the bucket (11) of the front loader (10) rises and lowers, and when the operating lever (42) is tilted in the left / right direction, the front part of the bucket (11) swings up and down. This makes it easy to operate the bucket (11) of the front loader (10).

[0018] According to the invention of claim 6, in addition to the effect of the invention of claim 5, a lock mechanism for restricting operation of the operating lever (42) is provided on the left wall of the side panel (31), thereby preventing the operator from accidentally touching the operating lever (42) and causing the bucket (11) of the front loader (10) to descend unintentionally into the field.

[0019] According to the invention recited in claim 7, in addition to the effect of the invention recited in claim 6, an armrest portion (36) on which the operator rests his / her elbow is formed behind the front portion (34) of the side panel (31), so that the operator can rest his / her right elbow on the armrest portion (36) and reduce fatigue caused when operating the operating lever (42) etc. for a long period of time. [Brief description of the drawings]

[0020] [Figure 1] FIG. [Diagram 2] FIG. 2 is a perspective view of the control section as seen from the front left side. [Diagram 3] FIG. 2 is a perspective view of the control panel as seen from the rear left side. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] FIG. 4 is a perspective view of the operating lever as viewed from the rear left side. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] As shown in FIG. 1, a work vehicle such as a tractor has a pair of left and right front wheels 2 provided at the front of the lower side of a machine frame 1, and a pair of left and right rear wheels 3 provided at the rear.

[0022] A bonnet 4 for housing an engine is provided at the front upper part of the machine frame 1, a control section 5 for an operator to ride on is provided behind the bonnet 4, and a safety frame 6 for protecting the operator in the event of the work vehicle tipping over is provided behind the control section 5. A work machine (not shown) such as a rotary extending in the left-right direction for excavating farmland can be connected to the rear of the machine frame 1.

[0023] A front loader 10 is provided on the front side of the machine frame 1. The front loader 10 is formed of a bucket 11 for transporting and digging soil and sand, and a lifting device 12 for raising and lowering the bucket 11.

[0024] The lifting device 12 is formed from a link 13 extending upward from both left and right sides of the machine frame 1, a link 14 extending forward from the upper part of link 13, a link 15 extending upward from the front part of link 14, and a link 16 extending from the upper part of link 15 to the lower part of the bucket 11.

[0025] The lower part of link 13 is fixed to the machine frame 1, the rear part of link 14 is rotatably connected to a support shaft 13A provided at the upper part of link 13 and extending in the left-right direction, the lower part of link 15 is rotatably connected to a support shaft 14A provided at the front part of link 14 and extending in the left-right direction, and the rear part of link 16 is fixed to the upper part of link 15. In addition, the front part of link 16 is fixed to a vertical middle part of the rear part of bucket 11, and the vertical lower part of the rear part of bucket 11 is rotatably connected to a support shaft 14B provided at the front end part of link 14 and extending in the left-right direction.

[0026] A hydraulic cylinder 17 is installed between the front part of the vertical intermediate part of link 13 and the lower part of the longitudinal intermediate part of link 14. As a result, when the rod of hydraulic cylinder 17 is pushed out toward the rod side, the front part of link 14 rotates clockwise about support shaft 13A to move bucket 11 upward, and when the rod of hydraulic cylinder 17 is retracted toward the head side, the front part of link 14 rotates counterclockwise about support shaft 13A to move bucket 11 downward.

[0027] A hydraulic cylinder 18 is installed between an upper part of the intermediate part of link 14 in the front-rear direction and an upper part of link 15. As a result, when the rod of hydraulic cylinder 18 is pushed out toward the rod side, the lower part of link 15 rotates counterclockwise about support shaft 14A, causing the front part of bucket 11 to swing counterclockwise about support shaft 14B, and when the rod of hydraulic cylinder 18 is retracted toward the head side, the lower part of link 15 rotates clockwise about support shaft 14A, causing the front part of bucket 11 to swing clockwise about support shaft 14B.

[0028] 2 and 3, a steering column 22 supporting a steering wheel 21 is provided in front of the operator's seat 20 of the control section 5. A step 26 that the operator uses when boarding is provided on the left side of a floor 25 on which the operator places his / her feet, and a forward / reverse pedal 27 for switching between forward and reverse movement of the work vehicle is provided on the right side of the steering column 22 on the floor 25, and an accelerator pedal 28 for increasing the speed of the work vehicle is provided to the right of the forward / reverse pedal 27.

[0029] Fenders 30 covering the upper parts of the rear wheels 3 are provided on both the left and right sides of the operator's seat 20, and between the operator's seat 20 and the fender 30 located on the right side, a side panel 31 is provided on which a gear shift lever 41 for increasing or decreasing the travel speed of the work vehicle and an operating lever 42 for operating the front loader 10 are mounted.

[0030] 4 to 6, in a plan view, the left portion of the side panel 31 is disposed between the right portion of the cockpit 20 and the left portion of the fender 30, offset toward the left portion of the fender 30, and the right portion of the side panel 31 is disposed approximately in the middle of the fender 30 in the left-right direction. In addition, the front portion of the side panel 31 is disposed between the front portion of the cockpit 20 and the front portion of the fender 30, offset toward the front portion of the cockpit 20, and the rear portion of the side panel 31 is disposed between the rear portion of the cockpit 20 and the rear portion of the fender 30, offset toward the rear portion of the cockpit 20. This prevents the front portion of the side panel 31 from extending beyond the front portion of the fender 30 on the floor 25, making it possible to effectively utilize the space of the floor 25, and also makes it easy to step on the accelerator pedal 28 disposed in front of the fender 30.

[0031] In a front view, the upper part of the side panel 31 is disposed between the seat board of the pilot's seat 20 and the upper part of the fender 30 and is offset toward the upper part of the fender 30. In addition, the lower part of the side panel 31 is disposed between the seat board of the pilot's seat 20 and the lower part of the fender 30 and is offset toward the seat board of the pilot's seat 20. This allows the operator at the pilot's seat 20 to easily operate the lift lever 40 and the operating lever 42.

[0032] In the left side view, the upper part of the side panel 31 is formed to extend upward beyond the upper part of the fender 30. The side panel 31 is formed of a front side portion 31A and a rear side portion 31B, and the rear side portion 31B is formed to extend upward beyond the front side portion 31A, and the upper surface of the front side portion 31A is formed in a substantially arc shape along the upper surface of the side panel 31. This makes it possible to more effectively prevent the front part of the side panel 31 from extending beyond the front part of the fender 30 above the floor 25. In addition, the operator of the cockpit 20 can more easily operate the lift lever 40 and the operating lever 42. The front part of the front side portion 31A is disposed forward of the seat plate of the cockpit 20, the front part of the rear side portion 31B is disposed offset toward the front part of the seat plate of the cockpit 20, and the rear part of the rear side portion 31B extends rearward of the backrest of the cockpit 20.

[0033] A guide groove 32 and a guide groove 33 are provided in the front portion 31A of the side panel 31, which extend in the front-rear direction at a predetermined interval in the left-right direction. A lift lever 40 for lifting and lowering the work machine connected to the rear portion of the machine body frame 1 is provided in the guide groove 32, and a speed change lever 41 for increasing or decreasing the travel speed of the work vehicle is provided in the guide groove 33.

[0034] When the lift lever 40 is in the forward tilted position, the working machine descends to the field surface, and when the lift lever 40 is in the rearward tilted position, the working machine rises from the field surface. The operating position of the lift lever 40 is measured by an angle sensor such as a potentiometer that abuts against the lower part of the lift lever 40.

[0035] When the shift lever 41 is tilted forward, the travel speed of the work vehicle increases, and when it is tilted backward, the travel speed of the work vehicle decreases. The operating position of the shift lever 41 is measured by an angle sensor such as a potentiometer that abuts against the lower part of the shift lever 41.

[0036] An operating lever 42 for lifting and lowering the front loader 10 and for swinging the bucket 11 of the front loader 10 is provided on the front portion 34 of the rear portion 31B of the side panel 31.

[0037] As shown in FIG. 7, when the operating lever 42 is operated in the forward / backward direction, a valve for supplying oil to the hydraulic cylinder 17 is switched via a wire 43A, the upper end of which is connected to the lower part of the operating lever 42, and when the operating lever 42 is operated in the left / right direction, a valve for supplying oil to the hydraulic cylinder 18 is switched via a wire 43B, the upper end of which is connected to the lower part of the operating lever 42.

[0038] When the operation lever 42 is in the front tilt position, the front loader 10 descends into the field surface, and when it is in the rear tilt position, the front loader 10 rises from the field surface. When the operation lever 42 is in the left tilt position, the front part of the bucket 11 of the front loader 10 swings downward, and when it is in the right tilt position, the front part of the bucket 11 of the front loader 10 swings upward. The forward / backward operation position and the left / right operation position of the operation lever 42 are measured by an angle sensor such as a potentiometer that abuts against the lower part of the operation lever 42.

[0039] A lock mechanism 44 is provided on the left wall of the front part 34 of the rear part 31B of the side panel 31, and the movement of the operating lever 42 is restricted by pressing the lock pin 44A of the lock mechanism 44 toward the operating lever 42. This makes it possible to prevent the operator in the operator's seat 20 from accidentally operating the operating lever 42 and causing the front loader 10 to descend unintentionally into the field.

[0040] Three guide grooves 35 extending from the rear left side to the front right side are formed at a predetermined interval in the front-rear direction on the rear side of the front part 34 of the rear side part 31B of the side panel 31. A hydraulic lever 45 is provided in the guide groove 35 to supply oil to hydraulic equipment provided outside the work vehicle. This makes it possible to easily supply oil pressurized in the work vehicle to the external hydraulic equipment.

[0041] A storage section 37 for placing a cup or the like is formed at the rear end of the rear portion 31B of the side panel 31, and an armrest section 36 for the operator to rest his / her elbow is formed between the guide groove 35 and the storage section 37. This allows the operator to operate the operating lever 42 etc. with his / her right elbow placed on the armrest section 36, reducing fatigue during long hours of work.

[0042] In a plan view, the operating lever 42 is disposed to the right of the lift lever 40 and the speed change lever 41, and in a side view, the grip portion of the operating lever 42 is disposed above the grip portions of the lift lever 40 and the speed change lever 41. This makes it possible to prevent the worker from accidentally touching the lift lever 40 or the speed change lever 41 when operating the operating lever 42.

[0043] In front view, the front portion 34 of the rear portion 31B of the side panel 31 is formed to have a gentle downward slope to the right, and in side view, is formed to have a gentle downward slope to the front. In addition, the lower portion of the operating lever 42 is formed to extend vertically to the front portion 34 of the rear portion 31B of the side panel 31 and then extend toward the front left side. This makes it possible to further prevent the operator from accidentally touching the lift lever 40 or the speed change lever 41 when operating the operating lever 42. [Explanation of symbols]

[0044] 1 Aircraft frame 2 Front wheels 3 Rear wheel 4. Bonnet 5. Control Unit 10 Front Loader 11 Bucket 20 Cockpit 30 Fender 31 Side Panel 31A Front side 31B Rear side 33 Guide groove 34 Front 36 Armrest 41 Gear shift lever 42 Operating lever 44 Locking mechanism

Claims

1. A work vehicle having a front loader (10) provided at the front of a machine frame (1), a pair of left and right front wheels (2) provided at the front of the lower side of the machine frame (1) and a pair of left and right rear wheels (3) provided at the rear, a bonnet (4) for storing an engine provided at the front of the upper side of the machine frame (1) and a control section (5) for an operator to ride on provided at the rear, The upper part of the rear wheel (3) is covered with a fender (30); a side panel (31) on which an operation lever (42) for operating the front loader (10) is disposed is provided between the right part of the operator's seat (20) of the operation section (5) and a fender (30) located on the right side; A work vehicle characterized in that, in a plan view, a front portion of a side panel (31) is disposed rearward of a front portion of the fender (30).

2. 2. The work vehicle according to claim 1, wherein a front portion (31A) of the side panel (31) is formed lower than a rear portion (31B) in a side view.

3. A speed change lever (41) for increasing or decreasing the rotation speed of the rear wheel (3) is inserted into a guide groove (33) extending in the front-rear direction of the front side portion (31A), The operating lever (42) is inserted into the front portion (34) of the rear side portion (31B), 3. The work vehicle according to claim 1, wherein the operation lever (42) is disposed to the right of the gear shift lever (41) in a plan view.

4. When viewed from the front, the upper surface of the front portion (34) is formed to be inclined downward to the right, When viewed from the side, the upper surface of the front portion (34) is formed to have a downward inclination toward the front, 4. A work vehicle according to claim 3, wherein the operating lever (42) extends in a direction perpendicular to an upper surface of the front portion (34).

5. When the operating lever (42) is tilted in the forward and backward directions, the bucket (11) of the front loader (10) is raised and lowered.

5. A work vehicle according to claim 4, wherein the front portion of the bucket (11) swings up and down when the operating lever (42) is tilted left and right.

6. 6. A work vehicle according to claim 5, further comprising a lock mechanism for restricting operation of the operating lever, the lock mechanism being provided on a left wall of the side panel.

7. 7. A work vehicle according to claim 6, wherein an armrest (36) on which an operator can rest his / her elbow is formed on the side panel (31) rearward of the front portion (34).

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