JP2013112104A - Working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working vehicle in which when operating a loader lever or a main shift lever, the other lever is prevented from being operated erroneously.SOLUTION: The working vehicle includes a loader lever 30 and a main shift lever 40. The loader lever 30 has a shape to be extended in a vertical direction and disposed at the right side of a steering handle 20 for operating a loader 14. The main shift lever 40 has a shape to be extended in the vertical direction and disposed between a side dashboard 22 positioned at the right side of a driver's seat 21 and the driver's seat. Tip end portions of the loader lever and the main shift lever are positioned higher than the seat surface of the driver's seat and when any one of the loader lever or the main shift lever is gripped with the hand at a position where the loader lever and the main shift lever become closest to each other, there is a gap between the hand and the other lever. A manipulator disposed on the side dashboard is a means of a working machine system and a manipulator disposed between the side dashboard and the driver's seat is a means of a traveling system.

Description

  The present invention relates to a work vehicle equipped with a loader for agriculture, construction, transportation, or the like.

  Conventionally, a work machine such as a front loader is mounted on the front part of the traveling vehicle, and the work machine operating means for operating the front loader is a work such as a tractor disposed at a position that can be reached by an operator who drives the traveling vehicle. There is a car.

  A work vehicle equipped with a work implement operating means is arranged on the right side of the steering handle, which is convenient for operability, so that the worker can move to a position that does not interfere with the worker when getting on and off. It has been proposed (see, for example, Patent Document 1).

  FIG. 10 shows an overall side view of the loader working vehicle proposed in Patent Document 1. As shown in FIG. FIG. 11A shows a rear view around the steering handle of the loader working vehicle, and FIG. 11B shows a perspective view of the cabin as viewed from the rear upper side.

  In front of the loader work vehicle 100, a front loader 104 is attached to a pair of masts 109 attached and fixed to the left and right of the vehicle body.

  The front loader 104 includes a pair of left and right side frames 101 attached to the left and right masts 109, a pair of left and right booms 102 pivotally connected to the upper portion of the side frame 101 and supported so as to be swingable up and down, The bucket 103 is pivotally connected to the distal end side of the boom 102 and is supported so as to be swingable up and down.

  A control valve 107 that controls a cylinder that swings the boom 102 and the bucket 103 is disposed on the lower side of the right mast 109.

  The control valve 107 is interlocked and connected to the work machine operating means 108 disposed on the right side of the steering handle 111 by an interlocking means 110 having a wire or the like. The swing control of the bucket 103 can be remotely operated.

  The steering handle 111 is connected to the steering arm, and the root portion of the steering arm is fixed to the body frame so as to be tiltable up and down. As a result, the steering handle 111 can freely move up and down (tilt) together with the column cover 112 covering the steering arm.

  As shown in FIG. 11A, the support plate 113 is fixed by screwing from above the column cover 112, and the work implement operating means 108 includes a support arm 114 and a support bracket 115 fixed to the support plate 113. It is attached to the column cover 112 via.

  The work implement operating means 108 has a control box 117 and a loader lever 118 provided on the upper surface side of the control box 117 and linked to the control valve 107 via the interlocking means 110 to operate the control valve 107. doing.

  In the front-rear intermediate portion on the upper surface side of the side console 120 on the right side of the driver's seat 116, various switches for turning on and off various devices mounted on the loader work vehicle 100 and an actuator mounted on the rear portion of the vehicle body are controlled. An auxiliary control lever for operating the auxiliary control valve is arranged.

  Further, a sub transmission lever 121 is disposed on the front side of the side console 120, and a main transmission lever 122 is disposed obliquely forward on the left side of the sub transmission lever 121.

  In addition, in FIG.11 (b), illustration of the working machine operation means 108 is abbreviate | omitted.

  When an operator gets on and off the right side of the vehicle body, a boarding passage is formed between the side console 120 and the steering handle 111. Since the work implement operating means 108 is arranged on the right side of the steering handle 111, the work implement operating means 108 becomes an obstacle when getting on and off as it is, but the work implement operating means 108 is tilted together with the steering handle 111. Since the configuration is free, when the operator gets on and off, the operator can get on and off the work implement operating means 108 without getting in the way by tilting the steering handle 111 upward.

JP 2007-92284 A

  However, in the loader work vehicle 100 described in Patent Document 1, since the loader lever and the main speed change lever are arranged close to each other, when the operator operates one lever, the other lever is operated by mistake. There was a case where it was done.

  For example, in the loader working vehicle 100 having the conventional configuration shown in FIGS. 10 and 11, the operator operates the loader lever 118 with the right hand to control the front loader 104 while the operator is sitting on the driver's seat 116. In this case, the elbow of the right arm hits the tip of the main speed change lever 122, and the main speed change lever 122 may be erroneously operated.

  An object of the present invention is to provide a work vehicle in which the other lever is not erroneously operated when the loader lever or the main transmission lever is operated in consideration of the above-described conventional problems.

In order to achieve the above object, the first present invention provides:
A loader lever for operating the loader, having a shape extending in the vertical direction, provided on the right side of the steering handle;
A main transmission lever having a shape extending in the vertical direction and provided between a side dashboard located on the right side of the driver seat and the driver seat;
The tip portions of the loader lever and the main transmission lever are both higher than the seating surface of the driver seat,
There is a gap between the hand and the other lever when one of the loader lever and the main transmission lever is gripped by a hand at a position where the loader lever and the main transmission lever are closest to each other. ,
The operation tool arranged on the side dashboard is a work machine system means,
The operating tool disposed between the side dashboard and the driver seat is a work vehicle that is a means of a traveling system.

  Thereby, when operating the loader lever or the main transmission lever, it is possible to prevent the other lever from being operated by mistake.

  In addition, since the operation tools are concentrated and arranged for each operation system, the operator can easily operate.

The second aspect of the present invention
The work vehicle according to the first aspect of the present invention, wherein a work implement elevating lever, a sub-shift switch, a PTO on / off switch, a tilling dial, and an external hydraulic operation lever are arranged on an upper surface of the side dashboard.

  As a result, the work implement system operation tools and the travel system operation tools are arranged in a concentrated manner, so that the operator can easily understand the position of each operation tool and can operate smoothly.

The third aspect of the present invention
The side dashboard is provided with a step, the upper step surface is arranged on the rear outer side, the lower step surface is arranged on the front inner side,
The external hydraulic operation lever is disposed on the upper surface,
It is the work vehicle according to the second aspect of the present invention, in which the work implement lifting lever and the tilling depth dial are arranged on the lower stage surface.

  Thereby, since the operation tool with high use frequency is arranged nearby, the operator can operate more smoothly.

The fourth aspect of the present invention is
The work implement lifting lever is disposed at a front end of the lower stage surface,
The plowing depth dial is disposed in the vicinity of the rear of the work implement lifting lever,
The sub-shift switch is a work vehicle according to a third aspect of the present invention, which is disposed in the vicinity of the inside of the work implement lifting lever on the lower stage surface.

  As a result, the auxiliary transmission switch is disposed near the main transmission lever of the same traveling system, so that the operator can easily operate the traveling system.

  According to the present invention, it is possible to provide a work vehicle in which when the loader lever or the main transmission lever is operated, the other lever is not operated by mistake.

Left side view of an agricultural tractor according to an embodiment of the present invention The top view of the cabin of the agricultural tractor of an embodiment of the invention The enlarged top view of the dashboard part of the right side of the agricultural tractor of an embodiment of the invention The perspective view which looked at the inside of the cabin of the agricultural tractor of an embodiment of the invention from the left front The perspective view seen from the back of the cabin of the agricultural tractor of an embodiment of the invention The perspective view seen from the front of the cabin of the agricultural tractor of an embodiment of the invention (A) Schematic cross-sectional view of a 4WD lever mounting portion of an embodiment of the present invention, (b) Schematic cross-sectional view of a 4WD lever mounting portion of a modification of the embodiment of the present invention (A) Schematic sectional view of a PTO transmission lever mounting portion according to an embodiment of the present invention, (b) Schematic sectional view of a PTO transmission lever mounting portion according to a modification of the embodiment of the present invention. The top view of the cabin of the agricultural tractor of the modification of an embodiment of the invention Overall side view of a conventional loader work vehicle (A) Rear view around the steering handle of a conventional loader working vehicle, (b) Perspective view of the interior of the cabin of a conventional loader working vehicle viewed from the rear upper side

  Embodiments of the present invention will be described below with reference to the drawings. In the present specification, left and right are referred to as left and right, respectively, and the front and rear are referred to as front and rear, respectively, in the forward direction of the work vehicle. And according to embodiment of this invention, it demonstrates below by taking the tractor of the agricultural machine which is an example of a working vehicle as an example.

  FIG. 1 is a left side view of the agricultural tractor of the present embodiment. FIG. 2 shows a plan view of the cabin of the agricultural tractor according to the present embodiment, and FIG. 3 shows an enlarged plan view of the right side dashboard portion. FIG. 4 is a perspective view of the agricultural tractor according to the present embodiment as seen from the left front, FIG. 5 is a perspective view of the cabin as seen from the rear, and FIG. 6 is seen from the front of the cabin. A perspective view is shown respectively.

  As shown in FIG. 1, the tractor 10 of the present embodiment has a pair of left and right driving rear wheels 12 mounted on the rear part of the vehicle body, and left and right front wheels 11 steered by a steering handle 20 at the front part. It is constructed with a shaft. The tractor 10 covers the front side of the cabin surrounding the driver's seat 21 equipped with the steering handle 20 with the bonnet 13, and the engine and its auxiliary equipment, that is, a radiator, an oil cooler, and an air conditioning condenser , Intercooler, air cleaner, battery and so on.

  As shown in FIG. 1, the tractor 10 is equipped with a front loader 14 on the front side of the vehicle body.

  The front loader 14 includes a pair of left and right side frames 19 attached to both sides of the vehicle body of the tractor 10, a main frame 16 pivotally connected to the upper portion of the side frame 19 and supported so as to be swingable up and down, and a main frame. A bucket 15 is pivotally connected to the distal end side of 16 and supported so as to be swingable up and down. Further, a main frame swinging cylinder 18 that is telescopically operated is connected between the base portion of the side frame 19 and the central portion of the main frame 16, and the bucket 15 swings on the front upper side of the main frame 16. A bucket swing cylinder 17 to be controlled is connected.

  The tractor 10 corresponds to an example of the work vehicle of the present invention, and the front loader 14 corresponds to an example of the loader of the present invention.

  Further, the tractor 10 according to the present embodiment can perform work on the ground by attaching a working machine (not shown) such as a rotary tillage device so that it can be moved up and down by a three-point link mechanism configured at the rear of the machine body.

  Next, arrangement | positioning of each operation tool in the cabin of the tractor 10 of this Embodiment is demonstrated.

  The driver's seat 21 disposed in the center of the cabin includes an armrest 26 on the left side. On both sides of the driver seat 21, a right side dashboard 22 and a left side dashboard 23 are erected.

  A step is provided in the upper part of the right side dashboard 22, and has two substantially horizontal surfaces, an upper step surface 24 and a lower step surface 25. As shown in FIG. 4, the upper stage surface 24 is formed on the rear outer side of the upper part of the right side dashboard 22, and the lower stage surface 25 is formed on the front inner side of the upper part of the right side dashboard 22.

  On the upper step surface 24 and the lower step surface 25, operation tools for operating the work implement are concentrated.

  Three external hydraulic levers 34 are arranged on the upper surface 24.

  A position lever 31 is disposed at the front end of the lower surface 25, and a Hi-Low changeover switch 32 and a tilling depth adjustment dial 33 are disposed near the rear end of the position lever 31. Further, a PTO on / off switch 35 is arranged further rearward of the Hi-Low changeover switch 32 and the tilling depth adjustment dial 33. The Hi-Low changeover switch 32 is a switch to be changed when traveling on a road or the like other than the farm field.

  As shown in FIG. 3, a lowered position adjustment dial 37 is provided at the front end portion of the base of the position lever 31, and a raised position adjustment dial 38 is provided at the rear end portion of the base of the position lever 31.

  The position lever 31 is a lever that controls the raising and lowering of the work machine. The rear side is “up” and the front side is “down”. The movable range before and after the position lever 31 is adjusted by the lowered position adjusting dial 37 and the raised position adjusting dial 38 to regulate the height range in which the work implement is moved up and down.

  Note that the PTO on / off switch 35 is a dial type and does not malfunction even when a part of the operator's body comes into contact with it. The PTO on / off switch 35 is disposed at a position closest to the driver seat 21 behind the tilling depth adjustment dial 33. As a result, the operator can operate immediately, which is effective in terms of safety.

  By arranging the operation tool having a high operation frequency on the lower surface 25 close to the driver seat 21, the operator can operate the operation tool smoothly.

  The position lever 31 corresponds to an example of the working machine lifting lever of the present invention, the Hi-Low changeover switch 32 corresponds to an example of the auxiliary transmission switch of the present invention, and the tilling depth adjustment dial 33 corresponds to the tilling depth dial of the present invention. For example, the external hydraulic lever 34 corresponds to an example of the external hydraulic operation lever of the present invention.

  In addition, a joy stick lever 30 is disposed at a position in front of the right-side dashboard 22 at a position where an operator sitting on the driver's seat 21 can easily operate with the right hand.

  On the other hand, a traveling operation tool is concentrated between the driver seat 21 and the right side dashboard 22.

  A main change lever 40 is disposed between the driver seat 21 and the right-side dashboard 22 at a position where it can be easily operated with the right hand. A sub-change lever 41 and a creep speed lever 42 are located behind the main change lever 40. Arranged in order. The sub change lever 41 can be fixed at an arbitrary position, and the traveling speed of the tractor 10 can be kept constant according to the position of the lever.

  The Hi-Low selector switch 32 is disposed on the lower step surface 25 of the right side dashboard 22 at a position approaching the main change lever 40.

  As described above, the operation tools for operating the work implement are concentrated on the right side dashboard 22, and the operation tools for the traveling system are concentrated between the driver seat 21 and the right side dashboard 22. As a result, the operator can easily understand the position of the operation tool and can perform the operation smoothly.

  The joy stick lever 30 corresponds to an example of a loader lever according to the present invention, and the main change lever 40 corresponds to an example of a main transmission lever according to the present invention. Further, the right side dashboard 22 corresponds to an example of the side dashboard of the present invention.

  As shown in FIG. 4, the joy stick lever 30 is arranged so that its tip end is positioned higher than the seating surface of the driver seat 21, and the main change lever 40 also has its tip portion at the driver seat. It arrange | positions so that it may become a position higher than the 21 seating surface.

  The joy stick lever 30 and the main change lever 40 are both operated in the front-rear direction. However, at the position where the joy stick lever 30 and the main change lever 40 are closest to each other, the operator can move either lever. The joy stick lever 30 and the main change lever 40 are arranged so that a gap is formed between the hand that grips the lever and the other lever when the tip is gripped. Therefore, when the operator operates the joy stick lever 30 or the main change lever 40, the body part will not accidentally touch the other lever and be erroneously operated.

  Further, the joy stick lever 30 and the main change lever 40 are not arranged so as to be aligned in the front-rear direction of the aircraft, but are arranged so as to be shifted in the left-right direction of the aircraft as shown in FIG. The operability when these levers are frequently operated is improved.

  An accelerator pedal 49 is disposed on the floor in front of the right side of the driver seat 21.

  Further, a 4WD lever 43 is disposed below the right side of the driver seat 21, and a PTO speed change lever 36 is disposed below the left side of the driver seat 21. A differential lock pedal 44 is disposed below the right side of the driver seat 21.

  A hazard switch 50 is disposed in front of the left side of the steering handle 20.

  As shown in FIG. 5, a center horn 51 is provided at the center of the steering handle 20. When viewed from the operator seated on the driver's seat 21, a forward / reverse lever 45 is disposed at the left back of the steering handle 20, and a winker lever 52 is disposed at the right back of the steering handle 20. A throttle lever 46 is disposed on the right front side of the steering handle 20, and a key switch 53 and a parking lever 54 are disposed on the lower right side of the steering handle 20.

  The left and right brake pedals 48 are disposed at a position near the floor on the right side of the driver seat 21, and the clutch pedal 47 is disposed at a position near the floor on the left side of the driver seat 21. Further, a tilt pedal 55 is disposed at a position close to the lower floor on the left side of the steering handle 20.

  In the above description, the 4WD lever 43 and the PTO speed change lever 36 are arranged on a surface that rises vertically from the floor surface below the driver seat 21 and extends forward, but at a position close to the side of the driver seat 21. It may be arranged as a lever shape extending upward.

  FIG. 7A shows a schematic cross-sectional view of the mounting portion of the 4WD lever 43 of the present embodiment described above, and FIG. 7B shows a 4WD lever mounting structure arranged on the side of the driver seat 21. The schematic cross section of a part is shown.

  FIG. 8A shows a schematic cross-sectional view of the mounting portion of the PTO speed change lever 36 according to the present embodiment described above, and FIG. 8B shows a PTO speed change structure arranged on the side of the driver seat 21. The schematic cross section of a lever attachment part is shown.

  FIG. 9 shows a plan view of the cabin of an agricultural tractor having a configuration in which a 4WD lever and a PTO shift lever are arranged on the side of the driver seat 21.

  As shown in FIG. 7A, the 4WD lever 43 described above has a lever-shaped tip on a surface that is erected vertically from a horizontal floor surface 62 below the seat surface of the driver seat 21. It is arranged to extend in front of the aircraft. The 4WD lever 43 is switched to 2WD by tilting upward, and is switched to 4WD by tilting downward.

  As shown in FIG. 7B, the vertical type 4WD lever 60 is not a surface perpendicular to the floor surface 62 but, for example, a horizontal surface close to the seat surface of the driver's seat 21 so that the tip extends upward. It may be attached. For example, as shown in FIG. 9, it is arranged on the horizontal plane between the main change lever 40 and the driver seat 21.

  The vertical type 4WD lever 60 shown in FIG. 7B switches to 2WD when pulled upward, and switches to 4WD when pushed downward.

  As shown in FIG. 8A, the PTO speed change lever 36 described above has a lever-shaped tip on a surface that is vertically provided from a horizontal floor surface 62 below the seat surface of the driver seat 21. Is arranged to extend in front of the aircraft. By operating the PTO speed change lever 36 up and down, the PTO speed change is switched.

  As shown in FIG. 8 (b), the vertical PTO speed change lever 61 is not a surface perpendicular to the floor surface 62, but, for example, the tip portion extends upward on a horizontal surface close to the seat surface of the driver seat 21. You may attach to. For example, as shown in FIG. 9, it arrange | positions on the horizontal surface of the near position of the left side of the driver's seat 21. FIG.

  The vertical PTO speed change lever 61 shown in FIG. 8B is operated not in the vertical direction but in the front-back direction, so that the PTO speed change is switched.

  As shown in FIG. 9, the vertical 4WD lever 60 and the vertical PTO speed change lever 61 are arranged closer to the side of the driver's seat 21 than in the case where the conventional floor surface 62 is arranged. The operator can easily operate these levers while sitting on the driver seat 21.

  The work vehicle according to the present invention has an effect of preventing the other lever from being erroneously operated when operating the loader lever or the main transmission lever, and the loader for agriculture, construction, transportation, etc. It is useful as a work vehicle equipped.

DESCRIPTION OF SYMBOLS 10 Tractor 11 Front wheel 12 Rear wheel 13 Bonnet 14 Front loader 15 Bucket 16 Main frame 17 Bucket swing cylinder 18 Main frame swing cylinder 19 Side frame 20 Steering handle 21 Driver's seat 22 Right side dashboard 23 Left side dashboard 24 Upper stage surface 25 Lower surface 26 Armrest 30 JOY stick lever 31 Position lever 32 Hi-Low selector switch 33 Plowing depth adjustment dial 34 External hydraulic lever 35 PTO on / off switch 36 PTO speed change lever 37 Lowering position adjustment dial 38 Lifting position adjustment dial 40 Main change lever 41 Sub change lever 42 Creep speed lever 43 4WD lever 44 Differential lock pedal 45 Forward / reverse lever 46 Slot Lever 47 Clutch pedal 48 Brake pedal 49 Accelerator pedal 50 Hazard switch 51 Center horn 52 Turn signal lever 53 Key switch 54 Parking lever 55 Tilt pedal 60 Vertical 4WD lever 61 Vertical PTO speed change lever 62 Floor surface 100 Loader work vehicle 101 Side frame 102 Boom 103 Bucket 104 Front loader 107 Control valve 108 Work implement operating means 109 Mast 110 Interlocking means 111 Steering handle 112 Column cover 113 Support plate 114 Support arm 115 Support bracket 116 Driver's seat 117 Control box 118 Loader lever 120 Side console 121 Sub-shift lever 122 Main transmission lever

Claims (4)

A loader lever for operating the loader, having a shape extending in the vertical direction, provided on the right side of the steering handle;
A main transmission lever having a shape extending in the vertical direction and provided between a side dashboard located on the right side of the driver seat and the driver seat;
The tip portions of the loader lever and the main transmission lever are both higher than the seating surface of the driver seat,
There is a gap between the hand and the other lever when one of the loader lever and the main transmission lever is gripped by a hand at a position where the loader lever and the main transmission lever are closest to each other. ,
The operation tool arranged on the side dashboard is a work machine system means,
The operating tool disposed between the side dashboard and the driver seat is a work vehicle that is a means of a traveling system.   The work vehicle according to claim 1, wherein a work implement elevating lever, a sub-shift switch, a PTO on / off switch, a plowing depth dial, and an external hydraulic operation lever are disposed on an upper surface of the side dashboard. The side dashboard is provided with a step, the upper step surface is arranged on the rear outer side, the lower step surface is arranged on the front inner side,
The external hydraulic operation lever is disposed on the upper surface,
The work vehicle according to claim 2, wherein the work implement lifting lever and the tilling dial are disposed on the lower surface. The work implement lifting lever is disposed at a front end of the lower stage surface,
The plowing depth dial is disposed in the vicinity of the rear of the work implement lifting lever,
4. The work vehicle according to claim 3, wherein the auxiliary transmission switch is disposed in the vicinity of the lower stage surface inside the work implement lifting lever.

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