Work vehicle

Abstract

To provide a working vehicle facilitating the operation of an operation part provided around an armrest.SOLUTION: In the working vehicle in which an armrest 30 is provided on one side of a driver's seat 7 and an operation panel 37 is provided on the upper surface of a fender 25 in the vicinity of the armrest 30, the armrest 30 is constituted of an elbow rest part 32 of a rear half part and an operation system arrangement part 33 of a front half part. The operation system arrangement portion 33 in the front half portion has an outer operation portion 33A and an inner operation portion 33B, the outer operation portion 33A is provided with a work machine lifting / lowering operation tool 34, the inner operation portion 33B is provided with a speed change operation tool 35, and the operation panel 37 on the upper surface of the fender 25 is divided into a plurality of regions, and a region close to the outer operation portion 33A is defined as a first region 37A, A PTO switch 38 is arranged in the first area 37A, and an operating part 43 for performing various settings and changes during work is provided in the second area 37A at a position higher than the first area 37B.SELECTED DRAWING: Figure 2

Description

[Technical Field]

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

[0002] A known configuration includes an armrest supported on the driver's seat and an operation panel device on the side of the driver's seat, on which various operating tools are provided (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-17803 Summary of the Invention [Problem to be solved by the invention]

[0004] The technology disclosed in Patent Document 1 improves the operability of the operator by arranging various operating tools on an armrest or an operation panel device.

[0005] However, work vehicles such as tractors have many controls, and the controls are mixed on the armrest and the control panel device, so it takes time for the operator to memorize the layout of each control and they have to move their hands around a lot when operating them.

[0006] An object of the present invention is to provide a work vehicle that is easy to operate. [Means for solving the problem]

[0007] In order to solve the above problems and achieve the object, the invention described in claim 1 provides a work vehicle having an armrest 30 on one side of the driver's seat 7 and an operation panel 37 on the upper surface of the fender 25 near the armrest 30, the armrest 30 being composed of an armrest portion 32 in the rear half and an operation system arrangement portion 33 in the front half, the operation system arrangement portion 33 in the front half being divided into an outer operation portion 33A and an inner operation portion 33B. haveThe outer operation unit 33A is provided with a work machine lifting operation device 34, and the inner operation unit 33B is provided with a speed change operation device 35. An operation panel 37 on the top surface of the fender 25 is divided into multiple areas, and an area adjacent to the outer operation unit 33A is designated as a first area 37A, and a PTO switch 38 is arranged in this first area 37A. An operation unit 43 for performing various settings and changes during work is provided in a second area 37B located higher than the first area 37A. .

[0008] The invention described in claim 2 is the invention described in claim 1, wherein the travel control unit 56 of the work vehicle is provided with an automatic steering mode 57 that automatically steers the work vehicle so that its own position follows a planned route, and Yes A third area 37C is provided behind the first area 37A. A switch associated with the automatic straight-line control function of the automatic steering mode was placed on the slope of the vehicle. [Effects of the Invention]

[0009] According to the invention described in claim 1, Front half of armrest 30 Since the work equipment lifting operation tool 34 is disposed on the outside and the PTO switch 38 is disposed in the first area, the work-related operation tools can be disposed in positions close to each other, making it easier for the operator to grasp and operate the operation tools. By setting the control panel at different heights and areas, The operator can easily grasp the position of each operating tool and operate it easily.

[0010] Claim 2 According to the invention described in claim 1 In addition to the effects described above, since there is no need to perform driving operations when the automatic steering mode is executed, the driver can operate the vehicle at a position away from the operating tool 35 of the gear shift operating system. A switch associated with the automatic straight-line control function in automatic steering mode Even if the third area 37C is provided, the operation is not complicated. Inclined surface By arranging the switches in this manner, confusion with the operation switches can be prevented, and operation can be easily performed. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a side view of an agricultural tractor according to an embodiment of the present invention. FIG. [Figure 2] FIG. 2 is a plan view of the armrest and operation panel of the agricultural tractor. [Figure 3] FIG. 3 is a perspective view of FIG. 2. [Figure 4] FIG. 2 is an enlarged plan view of the electronic hydraulic control box of the agricultural tractor. [Figure 5] FIG. 2 is a block diagram of a control system of the agricultural tractor. [Figure 6] FIG. 2 is a perspective view of the operation panel of the agricultural tractor as viewed from the bottom. DETAILED DESCRIPTION OF THE INVENTION

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0013] FIG. 1 shows a tractor. A diesel engine E is mounted inside a hood 2 at the front of a vehicle body 1. The rotational power of the engine E is transmitted to a transmission in a transmission case 3, which then reduces the speed and transmits the rotational power to front wheels 4 and rear wheels 5. A steering wheel 6 for steering the front wheels 4 is mounted behind the engine E, and a driver's seat 7 is located behind the steering wheel 6. A hydraulic cylinder case 8 is mounted at the upper rear of the transmission case 3, and lift arms 9, which form part of a hydraulic lifting mechanism, are rotatably attached to both the left and right sides of the cylinder case 8. The lift arms 9 move up and down by the extension and contraction of lifting hydraulic cylinders 10. A three-point link mechanism consisting of a top link 11 and left and right lower links 12 is mounted at the rear of the vehicle body. A rotary work machine R is attached to this link mechanism, and the lower links 12 are connected to the lift arms 9 via lift rods 13, allowing the work machine R to be raised and lowered.

[0014] The steering wheel 6, 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 vibration-isolating rubber, making it difficult for vibrations of the vehicle body to be transmitted to the cabin 16.

[0015] The cabin 16 is an integrated framework consisting of a floor 17, front pillars 18 erected at the left and right front of the floor 17, rear pillars 19 erected at the left and right rear of the driver's seat 7, intermediate pillars 20 erected at the midpoint between the front and rear, and an upper frame 21 connecting the upper ends of these pillars, and is covered with a roof 22. Strength is ensured by rigidifying components such as a box-shaped seat frame 23 that supports the driver's seat 7, a rear plate 24 that surrounds the rear of the driver's seat 7, and left and right fenders 25 that cover the tops of the rear wheels 5. Furthermore, glass windows are provided on the front and rear sides, and passengers can enter and exit the cabin through left and right opening doors 26.

[0016] Next, the configuration of the operating section near the driver's seat 7 inside the cabin 16 will be described. As shown in Figures 2 and 3, an armrest 30 is provided on one side of the driver's seat 7 (the right side in the illustrated example) so as to be able to rotate up and down. The armrest 30 is connected to a bracket member 31 provided near the side of the driver's seat 7 so as to be able to rotate freely about a horizontal axis, and is divided into an armrest section 32 in the rear half and an operating system arrangement section 33 in the front half. A cushioning material is provided on the upper surface of the armrest section 32.

[0017] The front half of the operating system arrangement section 33 forms a partition section 33C that divides the operating section into an outer operating section 33A and an inner operating section 33B. A work implement lift lever 34 serving as a work implement lifting operation device for lifting and lowering the work implement R is provided on the outer operating section 33A so as to be movable forward and backward, and a main speed change lever 35 serving as a speed change operation device is provided on the inner operating section 33B so as to be movable forward and backward. When the work implement lift lever 34 is tilted forward, the work implement R descends, and when tilted rearward, the work implement R ascends. The main speed change lever 35 also functions as a position control lever, which can set the height of the work implement R in the lowered position by adjusting the forward tilt angle of the work implement lift lever 34. When, for example, an eight-speed transmission mechanism is configured by combining a main transmission mechanism (not shown) and a height change mechanism, the main speed change lever 35 is configured to shift to a lower speed as it is tilted from the forward tilt side to the rearward tilt side, and the accelerator shift position is set at the rearward tilt end. When the accelerator pedal is set to the shift position, the gear is changed to a predetermined speed by calculation based on the detected accelerator pedal depression amount and engine speed.

[0018] A vehicle speed control switch 36 is located behind the gearshift lever 35. When this switch 36 is turned on, the gear stage is calculated so that the vehicle speed does not exceed, for example, 15 km / h, and is automatically shifted to a predetermined lower speed.

[0019] The operator uses his right hand to feel for the partition 33C, and when raising or lowering the work implement R, he feels for the work implement lifting lever 34 on the outside of the partition 33C, and when changing speed, he feels for the main speed change lever 35 on the inside of the partition 33C, and the existence of the partition 33C makes it easy to touch and operate the desired operating lever without having to look. The curved top shape of the partition 33C is shaped so that it is higher than the operating parts of the work implement lifting lever 34 and the main speed change lever 35.

[0020] Next, a description will be given of the configuration of the operation panel 37 configured on the upper part of the right fender 25 that is closest to the armrest 30. The operation panel 37 portion on the upper surface of the fender extends from near the inside of the intermediate support pillar 20 of the cabin 16 to a predetermined range forward, and is divided into a plurality of areas. Specifically, it includes a first area 37A that is close to the outer operation unit 33A of the armrest 30, a second area 37B that is arranged at an angle from an upper edge that is slightly higher behind the first area 37A, a third area 37C whose front portion is formed in a sloping convex shape 37Cp between the upper edge of the second area 37B and the inner wall of the intermediate support pillar 20, and a fourth area 37D that is slightly lower forward of the sloping convex shape 37Cp of the third area 37C.

[0021] The first area 37A is equipped with a PTO switch 38, tillage depth adjustment dial 39, engine speed memory 40, memory adjustment switch 41, automatic clutch switch 42, and other components. The PTO switch 38 manually controls the rotation and stopping of the PTO shaft, while the tillage depth adjustment dial 39 sets the tillage depth during automatic tillage depth control mode. The engine speed memory 40 employs a seesaw switch configuration to change between two preset engine speeds with a single touch and is used when pausing and resuming work, such as during turning. The memory adjustment switch 41 also employs a seesaw switch configuration to arbitrarily increase or decrease the engine speed set in the engine speed memory. The automatic clutch switch 42 activates the automatic clutch brake stop function, which allows the vehicle to decelerate and stop simply by depressing the brake pedal. After the vehicle has stopped, the vehicle can be started again by simply releasing the brake pedal.

[0022] The first area 37A is provided at a height position substantially equal to that of the elbow rest portion 32 of the armrest 30.

[0023] The inclined second area 37B is equipped with an electronic hydraulic operation box 43, which can be opened and closed with a cover 44. As shown in Fig. 4, the electronic hydraulic operation box 43 is equipped with a travel selector switch for 2WD, 4WD, etc., work setting switches for reverse linked lift, swing linked lift, swing linked brake, etc., and other setting switches for auto switching of position and draft selection, and horizontal switching of the work implement between absolute horizontal, machine body parallel, and machine body inclination. This second area 37B is set at a slightly higher position than the first area 37A.

[0024] In the third area 37C, a pair of external hydraulic control levers 45, 45 are arranged near the inside of the intermediate support 20, and various switches associated with the automatic straight-ahead control function of the automatic steering mode, which will be described later, are arranged on an inclined surface 46 of the inclined convex surface 37Cp in front of them. For example, a home screen call switch 47, a screen changeover switch 48, and a position correction switch 49 for the sub-monitor 54 are provided.

[0025] The fourth area 37D is equipped with a PTO selector switch 50, a mode selector dial 51, a work speed memory switch 52, and a work setting call switch 53. The PTO selector switch 50 can be set between an automatic PTO rotation mode, which automatically stops the PTO shaft rotation when the work implement R begins to ascend and restarts it when it descends to a specified distance, and a manual mode, which does not. The mode selector dial 51 corresponds to the various switches on the electro-hydraulic operation box 43, allowing the drive state and various control settings to be set to appropriate states with a single touch when switching between tilling work and road travel. The work speed memory switch 52 automatically switches to the appropriate main gear position in accordance with the setting position of the auxiliary speed change lever. The work setting call switch 53 calls up stored values ​​for the various switches on the electro-hydraulic operation box 43 for a specified work. The fourth area 37D is provided continuously with the first area 37A.

[0026] As described above, the arrangement heights and operating tools are set in the first to fourth areas 37A to 37D. The work implement lifting lever 34 is located outside the partition 33C, and the PTO switch 38 is located in the first area. Therefore, the related operating tools are located close to each other, making it easy for the operator to grasp the location of the operating tools and operate them. Furthermore, the work-related operating tools are provided by the work implement lifting lever 34 outside the partition 33C and the PTO switch 38 in the first area 37A, and are distinguished from the main shift lever 35 inside the partition 33C. This makes it easy for the operator to grasp the location of each operating tool and operate them.

[0027] The first area 37A is positioned at approximately the same height as the elbow rest 32, so that the work equipment lifting lever 34, the PTO switch 38 in the first area, etc. can be easily operated while resting the elbow on the elbow rest 32.

[0028] The traveling vehicle body is equipped with a positioning device 55, and the vehicle body's travel control unit 56 is equipped with an automatic steering mode 57 that automatically steers the vehicle's position so that it follows a planned route (Fig. 5). The third area 37C is provided with a position correction operation device, i.e., a position correction switch 49 that corrects the traveling position when the automatic steering mode is active. Because no traveling operation is required when the automatic steering mode is active, locating this position correction switch 49 away from the traveling operation system's speed change operation device, i.e., the main shift lever 35, does not make operation complicated. Furthermore, by locating the operation devices in the third area 37C, separate from the second area 37B where the operation system's operation devices, i.e., operation setting switches such as reverse-linked lift, swing-linked lift, and swing-linked brake, auto-switching for position and draft selection, and horizontal switching for absolute horizontal, machine body parallel, and machine body tilt of the work implement, are located, confusion with the operation system switches and the like are prevented, and operations can be easily performed.

[0029] The operation panel 37 configured on the top of the right fender 25 is molded into the shape shown in Figures 2 and 3 using a resin material or partially made of steel plate, and is fastened with bolts or the like at several locations on the front and rear along the top surface of the right fender 25. Specifically, as shown in Figure 6, it is configured to be fixed to the top surface of the fender 25 at three locations (front, middle, and rear) with stays 60, 60.... The other side surfaces are fixed to the inner wall of the fender 25 as appropriate. [Explanation of symbols]

[0030] 7 Driver's seat 25 Fender 30 Armrest 32 Armrest 33 Operation system arrangement section 33A Outer control section 33B Inner operation section 33C Partition 34 Work equipment lift lever (work equipment lift operating tool) 35 Main shift lever (shifting device) 37 Operation Panel 37A First area 37B Second area 37C Third Area 43 Electro-hydraulic operation box (Operation unit) 47 Home screen call switch ( switch ) 48 Screen changeover switch ( switch ) 49 Position correction operation switch ( switch ) 56 Travel control unit 57 Autopilot Mode

Claims

1. In a work vehicle having an armrest (30) on one side of a driver's seat (7) and an operation panel (37) on the upper surface of a fender (25) near the armrest (30), the armrest (30) is composed of an armrest section (32) in the rear half and an operation system arrangement section (33) in the front half, the operation system arrangement section (33) in the front half having an outer operation section (33A) and an inner operation section (33B), and the outer operation section (33A) is provided with a work implement lifting operation tool (3 a PTO switch (38) is disposed in a second area (37B) located higher than the first area (37A), and an operation unit (43) for making various settings and changes during work is disposed in a second area (37B) located higher than the first area (37A).

2. 2. A work vehicle as described in claim 1, wherein the driving control unit (56) of the work vehicle is provided with an automatic steering mode (57) that automatically steers the vehicle's position so that it follows a planned route, a third area (37C) is provided outside the second area (37B) and behind the first area (37A), and a switch associated with the automatic straight-line control function of the automatic steering mode is arranged on the inclined surface of this third area (37C).

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