JP6193055B2 - Work vehicle - Google Patents

Description

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

  In agricultural tractors, a driver's seat is provided between the left and right rear wheel fenders, and a plurality of operation levers, switches, volumes, etc. are provided between the driver seat and the rear wheel fender or in a recess formed in the rear wheel fender. An operation tool is provided together with a lever guide and an operation panel. Also, an electronic control unit (ECU) that controls each part of the machine body is integrated with an operation panel and incorporated in a lever guide to improve workability and maintainability (for example, see Patent Document 1), or an electronic control unit. Place it horizontally between the driver's seat and the rear wheel fender, and install an operation unit with an operation tool on top of this electronic control unit to shorten the wiring between the two units. It is known that this is also used as a mounting member (for example, see Patent Document 2).

Japanese Patent Laid-Open No. 10-250399 JP 2002-53081 A

  However, in Patent Document 1, a concave portion must be formed in the rear wheel fender in order to incorporate the electronic control unit and the operation panel, the shape of the rear wheel fender becomes complicated, and the manufacturing process of the rear wheel fender becomes complicated. To do. Further, in Patent Document 2, since the electronic control unit is placed horizontally in a narrow limited space between the driver's seat and the rear wheel fender, the width of the electronic control unit is restricted, and an operation of attaching the electronic control unit above the electronic control unit is imposed. Even a unit is narrow in the left-right direction. Therefore, there is no margin in the lateral width such that the operation lever is provided in the left and right direction, for example, the traveling speed change operation tool and the work equipment lifting operation tool have to be dispersedly arranged on the left and right sides of the driver's seat, which complicates the operation. I was invited. Therefore, in view of the above problems, the present invention intensively arranges frequently used operating tools on one side of the driver's seat in the left-right direction without complicating the shape of the rear wheel fender. Accordingly, it is an object to provide a work vehicle with improved operability.

The present invention is provided with a side panel on which various operation tools are arranged on the side of the driver's seat and a rear wheel fender, and a traveling speed change operation tool and a work implement lifting operation tool can be swung back and forth on the front side of the operation panel. In a work vehicle in which an armrest is provided on a side panel on the rear side of the traveling speed change operation tool and the work implement lifting / lowering operation tool , a support column is provided between the driver seat and the rear wheel fender. and setting, while fixing the front-side bracket and the rear bracket to the strut, while attaching a traveling speed change operation device and the working machine lifting operation member on the front side bracket and features a left-rear side bracket to mount the electronic control unit vertically, the side panels, with mounting the arm rest under side bracket provided at the upper end of said post, the mounting portion provided at the front end of the front side bracket A plate that is welded to the column and fixed to the body, a front end portion of the front bracket, and a cover mounting bracket on the driver side surface of the column, The side cover attached to the mounting bracket, the side panel, and the rear wheel fender surround the mounting portion of the traveling speed change operation tool and the work implement lifting operation tool, and the electronic control unit. Features.

Further, the present invention secondly, the front end side of the front bracket is directed to the outer side of the vehicle body, and the operation directions of the traveling speed change operation tool and the work implement elevating operation tool are slanted back and forth with respect to the driver seat. It is configured to be in a direction. Furthermore, the present invention is the third, and wherein the vehicle body outer side of the side panel by polymerizing on the rear wheel fenders, placing the switch and volume units for automatic control in polymerization portion of the side panel To do.

  According to the work vehicle of the present invention, a support column is erected between the driver's seat and the rear wheel fender, the front bracket and the rear bracket are fixed to the support column, and a traveling speed change operation is performed on the front bracket. A tool and a work implement lifting operation tool are installed side by side, and an electronic control unit is mounted vertically on the rear bracket, and these are surrounded by a side panel, a side cover, and a rear wheel fender. Therefore, it is possible to attach a plurality of operating tools and an electronic control unit using a support column installed between the driver's seat and the rear wheel fender, and it is not necessary to complicate the shape of the rear wheel fender. At the same time, the electronic control unit is not limited in lateral width, and can be rationally arranged in a limited space between the driver's seat and the rear wheel fender.

  In addition, by installing the traveling gearshift operation tool and the work implement lifting / lowering tool on one side of the driver's seat, while holding the steering handle with one hand, the traveling gearshift operation tool and work frequently operated with the other hand One of the machine lifting operation tools can be selectively operated. Therefore, it is freed from the hassle of operating the traveling speed change operation tool and work implement lifting operation tool dispersed in the left and right sides of the driver's seat by changing the hand of the steering wheel, and safely traveling speed change or lifting operation of the work equipment can be performed. It can be carried out.

In addition, when the center of the side panel is attached to the upper part of the column and the armrest is attached to the center of the side panel, the traveling gearshift operating tool or the work equipment lifting operation tool is operated while the armrest is put on the armrest. It is possible to easily perform a shift operation and a lifting / lowering operation of the work machine.
Moreover, since the load applied to the armrest can act as an axial load on the column via the side panel, it is not necessary to increase the strength of the side panel and column more than necessary, thereby reducing the member cost. I can .

In addition, when the front end side of the front bracket is directed to the outside of the vehicle body and the operation direction of the traveling speed change operation tool and the work implement lifting operation tool is set to be diagonally front and back with respect to the driver seat, The gear shifting operation tool or the work equipment lifting / lowering operation tool can be arranged on the rear wheel fender from the side closest to the driver's seat, and it is unexpected when the operator sits in the driver's seat or stands up from the driver's seat. It is possible to prevent malfunction caused by touching these operation tools. Moreover, when the operator operates these operating tools while twisting the upper body from the driver's seat and operating the operating tools, the operating direction of the operating tools is an oblique direction toward the center of the body, so that the elbow is particularly extended. The operating tool can be operated without difficulty .

  Then, when the outer side of the side panel is superposed on the rear wheel fender, and the switch & volume unit for automatic control is arranged at the overlapping position of the side panel, the switch & volume unit for automatic control is It can be provided using the space above the fender, and it can be arranged to concentrate operation tools such as travel gearshift operation tools, work equipment lifting operation tools, automatic control switches and volumes on the side panel, The operability of the operating tool can be further improved.

It is a side view of a tractor. It is a top view of a tractor. It is a top view of a control part. It is a perspective view of the operation part on the right side of the driver's seat and the vicinity thereof. It is a side view of the operation part on the right side of the driver's seat and its vicinity. It is a perspective view of the operation part on the right side of the driver's seat with the cover removed, and the vicinity thereof. It is the side view seen from the left side of the operation part of the driver's seat right side of the state which removed the cover, and its vicinity. It is a top view of the operation part on the right side of the driver's seat with the cover removed, and the vicinity thereof. It is the side view seen from the operation part of the driver's seat right side of the state which removed the cover, and the right side of the vicinity. It is a top view of the operation part of a driver's seat right side. It is a perspective view which shows the state which mounts | wears an armrest with a side panel.

  Embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the tractor 1 forms a vehicle body by integrally connecting an engine 2, a clutch housing 3, a transmission case 4, a differential case, and the like from the front. A bonnet 5 that covers the engine 2, the battery, the radiator, and the like is provided on the front side of the vehicle body, and the bonnet 5 can be opened and closed through a hinge provided at the rear. Further, a front axle case 7 is attached to a chassis frame 6 that is fixed to the engine 2 and extends forward, so that the front axle case 7 can swing left and right. Front wheels 8 can be steered and driven at the left and right ends of the front axle case 7. It is supported by.

  On the other hand, left and right rear wheels 9 are provided on the rear side of the vehicle body, and the rear wheels 9 are rotatably supported by rear axle cases connected to the left and right of the differential case. In the case of configuring a semi-crawler type tractor, a rubber triangular crawler can be used instead of the rear wheel 9 (tire). A well-known three-point link mechanism including a top link 10 and left and right lower links 11 is provided at the rear of the vehicle body. This three-point link mechanism is for connecting a working machine such as a rotary tiller, and the working machine is configured to be movable up and down by a hydraulic lift device having left and right lift arms attached to the upper part of the differential case. Engine power is transmitted through a PTO shaft pivotally supported on the rear surface.

  Further, a floor frame 12 is attached to the vehicle body behind the engine 2 via vibration-proof rubber. The floor frame 12 includes a dashboard 15 on which a steering handle 13 and an instrument panel 14 are mounted, a floor panel 17 on which a floor mat 16 is laid, a seat panel 19 to which a driver's seat 18 is mounted, a rear cover 20 that blocks mud splashes, And the holder 22 etc. which attaches the lops 21 so that folding is possible are integrally attached by the volt | bolt or welding.

  Further, a fender 23 that covers the outer periphery of the rear wheel 9 is provided from the left and right of the rear side of the floor panel 17 to the left and right of the seat panel 19. The fender 23 includes a vertical wall portion 23a on the inner side of the vehicle body and a ceiling portion 23b having an arc shape and a front lowering shape at the upper portion thereof, and is attached to the floor frame 12 and the seat panel 19 with bolts. Overfenders 24a and 24b are attached to the outer side of the vehicle body and the rear side of the fender 23. In addition to the auxiliary step 25 being attached to the floor frame 12, the left and right fuel tanks 26 are suspended and supported.

  Next, the steering unit of the tractor 1 will be described. As shown in FIGS. 1 to 5, the driver's seat 18 described above is provided in the steering unit, and the steering wheel 13, A shuttle lever (forward / reverse lever) 27 for switching between forward / neutral / reverse, an engine control lever 28, a starter switch, and the like are provided. On the floor panel 17 below the dashboard 15, left and right brake pedals 29, 29, a clutch pedal 30, and a PTO speed change lever 31 are provided, and a foot accelerator pedal 32 is provided on the right side of the floor panel 17. Is provided.

  A sub-shift lever 33 is provided on the left seat panel 19 of the driver's seat 18. The auxiliary transmission lever 33 changes the traveling auxiliary transmission provided in the transmission case 4 to, for example, a high speed, medium speed, low speed, or neutral, and changes it to a vehicle speed range suitable for road traveling or work traveling. It is. Further, on the right side of the driver's seat 18, there are provided a resin armrest 34 that serves as an armrest for the right hand, and a side panel 35 that can also be referred to as a substrate of an operation unit disposed on the right side of the driver's seat 18.

  As shown in an enlarged view in FIG. 10, the side panel 35 is provided with a main transmission lever 36 and a position control lever 37 on the left and right sides of the side panel 35 (the lever operation area in the front-rear direction is partially seen from the side). (Overlapping or close to each other). Further, behind the respective levers 36 and 37, a tilling depth adjustment dial 38 and a lifting / lowering fine adjustment switch 39 of the working machine are provided. Here, the main transmission lever 36 plays a role of setting the gear position of the traveling main transmission provided in the transmission case 4 and constitutes the traveling transmission operating tool of the present invention. Further, the position control lever 37 plays a role of setting the lift arm rotation angle of the hydraulic lift device described above, and constitutes the work implement lifting operation tool of the present invention. The plowing depth adjustment dial 38 sets the plowing depth in the plowing depth automatic control. The elevating fine adjustment switch 39 temporarily raises and lowers the work implement by changing the rotation angle of the lift arm temporarily. It is a switch to make.

  Further, a PTO switch 40 and an automatic control switch & volume unit 41 are provided near the rear portion of the side panel 35. Here, the PTO switch 40 is a switch for turning on and off the PTO clutch provided in the transmission case 4. When the PTO clutch is turned on and off by the PTO switch 40, the PTO shaft rotates and stops. Further, the switch & volume unit 41 is a unit in which a switch for changing modes in various automatic controls, a volume for setting a target value, and an LED lamp for displaying a control mode set by the switch are integrated on a single substrate. Yes, in this embodiment, the PTO mode change switch 42, the automatic depth switch 43, the work change switch 44 (the LED lamp is turned on when the work is selected as rotary and the substitute mode is entered), the lowering speed dial 45, the hydraulic pressure takeout setting A raised height dial 46 having a position, a tilt dial switch 47, and respective LED lamps 48. A cup holder 50 is integrally formed on the rear end portion of the side panel 35 on the outer side of the vehicle body so as to avoid the knob 49 of the loosening bolt of the lops 21.

  Next, the operation unit and the electronic control unit mounting structure provided on the right side of the driver's seat 18 will be described. As shown in FIGS. 6 to 9, a U-shaped column 51 is erected on the seat panel 19 positioned between the driver's seat 18 and the right fender 23. Specifically, a wide lower plate 51a to be welded to the lower portion of the support column 51 is superposed on the seat panel 19 and fixed using bolts b. It should be noted that a screw hole for attaching a side cover, which will be described later, or cover attachment brackets 51b and 51c welded with nuts are welded to the support column 51 and the lower plate 51a. In addition, the front bracket 52 is fixed (fixed) to the upper portion of the column 51 using bolts b and nuts n, and the rear brackets 51d and 51e are welded and fixed to the upper and lower sides of the column 51. Yes. Furthermore, the upper plate 51f is welded to the upper part of the support | pillar 51, and the center part of the side panel 35 is attached to the upper plate 51f with the volt | bolt b.

  An armrest 34 is attached to the center of the side panel 35. That is, as shown in FIG. 11, the armrest 34 is composed of a mounting plate 34a and a cushion 34b, and the cushion 34b is bonded and fixed to the mounting plate 34a in advance. Further, the mounting plate 34a is provided with claws 34c, 34c and bolt insertion holes 34d. The claws 34c, 34c are inserted into the slits s, s at two front and rear sides of the side panel 35, and then inserted into the bolt insertion holes 34d. The armrest 34 is detachably secured to the side panel 35 by passing a knob bolt (not shown) and screwing it into a clip nut (not shown) provided at a corresponding position g of the side panel 35.

  The front bracket 52 is configured such that the rear end attached to the column 51 is substantially in the front-rear direction, the front end is bent from the middle 52a so that the front end is directed outward of the vehicle body, and the front end 52b is further bent. The main transmission lever 36 and the position control lever 37 are attached to the front bracket 52, which is bent substantially in the left-right direction. That is, on the front end side of the front bracket 52, a lever mounting plate 53 having a pivot shaft and a plurality of detent holes 53a is fixed together with the lever guide 54 by the bolt b. A boss of the main transmission lever 36 is fitted and fixed to the pivot shaft, and a base portion of the main transmission lever 36 is rotatably supported on the pivot shaft. A cylindrical holder 36b is provided at the tip of an arm 36a that extends downward from the boss of the main transmission lever 36. The holder 36b includes a spring and a ball, and one end of the holder 36b is bolted b. It is closed. Accordingly, when the main speed change lever 36 is rotated and the ball falls into the detent hole 53a of the lever mounting plate 53, the main speed change lever 36 is moved to a predetermined speed (for example, 1st speed, 8th speed, neutral, and The automatic position is shifted to the amount of depression of the foot axle pedal.

  Further, the main speed change lever 36 is connected to the base portion through a joint so that the flange portion 36d on the distal end side on which the knob 36c is mounted can swing in the left-right direction orthogonal to the lever rotation direction, and the flange portion 36d on the distal end side. Is biased by a spring 55 so as to be positioned on one side in the left-right direction (vehicle center side). Further, the main transmission lever 36 is provided with a potentiometer 56 for detecting its rotation operation position, that is, a gear position. In other words, the potentiometer 56 is attached to a mounting plate 57 fixed to the front bracket 52, and its potentiometer shaft is linked to the boss of the main speed change lever 36 so as to be electrically operated according to the rotational operation position of the main speed change lever 36. The output is output by the partial pressure method.

  Further, the position control lever 37 can be rotated using a bush 59, a spring 60, a washer w, and a nut n on the lever bracket 58 attached to the front bracket 52, and can be frictionally held at the rotated position. It is attached. Further, the position control lever 37 is provided with a potentiometer 61 for detecting the rotation operation position. That is, the potentiometer 61 is attached to the lever bracket 58, and its potentiometer shaft is linked to the base of the position control lever 37 to output an electrical output corresponding to the rotational operation position of the position control lever 37 in a voltage dividing manner. To do.

  On the other hand, the electronic control unit 62 is vertically mounted on the rear side brackets 51d and 51e. That is, the electronic control unit 62 has a microcomputer unit (CPU, RAM, flash memory, power supply, digital / analog input circuit, EEPROM, communication circuit, and driver) mounted on the same substrate, and the molded one is stored in the microcomputer case 63. The microcomputer case 63 is attached to a mounting cover 64 fixed to the rear side brackets 51d and 51e with bolts b using bolts b and nuts n in the vertical direction. Note that there is not only one microcomputer unit 62 in the tractor 1, but a plurality of microcomputer units are distributed and arranged in various parts of the airframe, and are mutually connected using communication means such as a control area network (CAN). It is connected.

  For example, as the microcomputer unit used in the tractor 1, there are units for engine control, traveling speed change, liquid crystal display, and the like. As the electronic control unit 62 attached to the support column 51 described above, a hydraulic wrist device is used. Controls the lifting / lowering of the work implement, rolling control to control the horizontal tilt of the work implement, PTO clutch control, front wheel double speed & 2WD 4WD switching control, etc. It is a microcomputer unit that detects a position and gives a shift command to the microcomputer for traveling shift. Further, the tilling depth adjustment dial 38, the fine lifting / lowering adjustment switch 39, the PTO switch 40, and the switch & volume unit 41 described above are directly attached to the side panel 35 itself. Among these, the PTO switch 40 and the switch & volume unit are mounted. A mark sheet 65 is attached to the operation surface of the unit 41.

  Further, the column 51 provided on the right side of the driver's seat 18, the operating tools 36 and 37 attached to the column 51, and the electronic control unit 62 are attached to the front ends of the cover mounting brackets 51 b and 51 c and the front bracket 52 described above. The three side covers 66 (66a, 66b, 66c) attached to the bracket 52c with bolts b and the vertical wall portion 23a of the right fender 23 are surrounded by the upper end portion and the front side bracket of the side cover 66. The upper side is closed and surrounded by a panel mounting bracket 67 attached to the front end of 52 and a side panel 35 screwed to the ceiling portion 23b of the right fender 23. Note that the upper ends of the main transmission lever 36 and the position control lever 37 extend upward from the respective lever grooves 35a, 35b formed in the side panel 35, and knobs 36c, 37a are mounted at the tips, and the main transmission lever 36 An assist grip 68 is attached to the right fender 23 on the outer side of the vehicle body.

  In the embodiment of the present invention configured as described above, for example, when a farming work is performed using a rotary tiller, the auxiliary transmission lever 33, the PTO transmission lever 31, the engine control lever 28, Use the depth adjustment dial 38 or the like to set an appropriate vehicle speed zone, PTO speed, engine speed, and tilling depth, and operate the shuttle lever 27, main transmission lever 36, position control lever 37, etc. Start work. When turning at the field end, the position control lever 37 is operated to lift the work machine, the steering handle 13 and the brake pedal 29 are operated to turn the machine, and the position control lever 37 is operated again. Then lower the work implement and resume tillage.

  Accordingly, an operation tool that the operator must frequently operate when performing the tilling work is a position control lever 37, a change in traveling speed by the main transmission lever 36, or a tilling depth adjustment dial 38. It is a change of tilling depth. However, according to the embodiment of the present invention, frequently used operation tools such as the position control lever 37, the main transmission lever 36, and the tilling depth adjustment dial 38 are concentrated on the side panel 35 on the right side of the driver's seat 18. When operating these operating tools, the operating tool is operated with the right hand, and the left hand may hold the steering handle 13. Therefore, for example, as in the case where the main speed change lever 36 is provided on the left side of the driver's seat 18, the hand holding the steering handle 13 is changed and the position control lever 37 and the main speed change lever 36 are operated. It is released, and it is possible to safely perform a traveling shift or a lifting operation of the work machine.

  Further, when operating the position control lever 37 and the main speed change lever 36, it is possible to easily carry out the travel speed change operation and the work equipment elevating operation while putting the right elbow on the armrest 34 and resting the right hand. The armrest 34 is attached to the central portion of the side panel 35, and the central portion of the side panel 35 is attached to the upper portion of the support column 51, so that the load applied to the armrest 34 is supported via the side panel 35. Acting as an axial load, and it is difficult to apply a bending moment to the column 51. Therefore, it is not necessary to increase the strength of the side panel 35 and the column 51 more than necessary, thereby reducing the member cost.

  Further, the position control lever 37 and the main transmission lever 36 are provided side by side with the side panel 35 and are attached to a portion directed to the outer side of the vehicle body on the front end side of the front bracket 52. Therefore, the operation direction of the position control lever 37 and the main speed change lever 36 is an oblique front-rear direction in which the front side is the outer side of the vehicle body, and the position control lever 37 and the main speed change lever 36 are moved to the side closest to the driver's seat 18. Can be arranged on the right rear wheel fender 23 from the right side of the vehicle, and when the operator sits on the driver's seat 18 or stands up from the driver's seat 18, an error caused by unexpectedly touching these operating tools 37 and 36 is caused. The operation can be prevented. Moreover, when the operator operates these operating tools 37 and 36 while twisting the upper body from the driver's seat 18 and confirming the rear, the operating direction of the operating tools 37 and 36 is an oblique direction toward the center of the body. Therefore, it is possible to operate the operation tool naturally and without excessively extending the elbow.

  As described above, the position control lever 37 and the main transmission lever 36 are provided in the left-right direction by using a part of the empty space above the right rear wheel fender 23 as described above, and the peripheral edge of the side panel 35 is directed outward of the vehicle body. By spreading and mounting the side panel 35 on the right rear fender 23 on the right side, particularly by arranging the switch & volume unit 41 for automatic control on the rear wheel fender 23 on the side panel 35, The length of the operation unit provided on the right side of the driver's seat 18 in the front-rear direction can be shortened and can be summarized in a compact manner. Therefore, the operation unit provided on the right side of the driver's seat 18, that is, the traveling speed change operation tool 36 on the side panel 35, while preventing the front end of the side panel 35 from greatly projecting on the floor (17) and narrowing the control space. , A work implement lifting operation tool 37, automatic control switches and operation tools 38, 39, 40, 42,... Such as a volume can be centrally arranged. Therefore, the operability can be further improved.

  In addition, although embodiment mentioned above demonstrated the rops specification tractor 1 which open | released the upper part of the control part, it is natural that this invention can be applied to a cabin specification tractor. In the traveling transmission of the embodiment, the operation positions of the shuttle lever 27 and the main transmission lever 36 are detected by a potentiometer 56 or a switch, and the forward / reverse switching device and the gear-type main transmission are hydraulically operated based on these detection positions. While switching / shifting control is performed by an actuator, the gear-type sub-transmission device is directly switched by a mechanically-linked sub-transmission lever 33, but the forward / reverse switching device or the main transmission device is mechanically connected to each lever. In this case, the main transmission lever 36 is rotatably attached to the front bracket 52 of the support column 51, and the main transmission and the main transmission lever 36 are connected to a rod or push-pull wire. And so on.

  Furthermore, the traveling speed change operation tool and the work implement lifting / lowering operation tool are of a lever type that is operated to rotate back and forth as the main speed change lever 36 and the position control lever 37, but this is dialed and directly detected by a potentiometer. It can also be modified. The electronic control unit 62 attached to the support column 51 is a microcomputer unit that performs lifting / lowering of the work implement and tilt control based on the operation position of the position control lever 37, and the like. The present invention is not limited to the above-described embodiment, such as a microcomputer unit that performs traveling shift control based on an operation position or the like, or a microcomputer unit that performs both of these controls.

1 Tractor (work vehicle)
13 Steering handle 18 Driver's seat 23 Rear wheel fender 33 Sub-shift lever 51 Post 51d Rear bracket (upper)
51e Rear bracket (bottom)
52 Front bracket 34 Armrest 35 Side panel 36 Main gearshift lever (travel gearshift operating tool)
37 Position control lever (work implement lifting operation tool)
41 Switch & Volume Unit 56 Potentiometer (for detecting main shift position)
61 Potentiometer (for lifting position detection)
62 Electronic control unit 66 Side cover

Claims (3)

A side panel (35) on which various operating tools are arranged on the side of the driver's seat and a rear wheel fender (23) are provided, and a traveling speed change operating tool (36) and a work implement lifting operation are provided on the front side of the side panel (35). A tool (37) is arranged side by side so that it can swing back and forth, and an armrest (36) is placed on the side panel (35) on the rear side of the travel speed change tool (36) and the work implement lifting / lowering tool (37). 34), a support column (51) is erected between the driver seat (18) and the rear wheel fender (23), and a front bracket (52) and a rear part are provided on the support column (51). together to secure the side brackets (51d · 51), whereas mounting the front-side traveling speed change operation member to the bracket (52) (36) and the working machine lifting operation member and (37) in parallel in the lateral direction, the rear portion Electronic on side bracket (51d / 51e) The control unit (62) is mounted vertically, and the side panel (35) is attached to the upper plate (51f) provided at the upper end of the column (51) with the lower side of the armrest (34), and the front bracket The front of the side panel (35) is fixed to a panel mounting bracket (67) provided at the front end of (52), and is fixed to the support (51), and the support (51) is fixed to the fuselage. Cover mounting brackets (51b and 51c) are provided on the plate (19), the front end of the front bracket (52), and the driver seat side surface of the support column (51), and the cover mounting bracket (51b and 51c). A side cover (66) attached to the vehicle, the side panel (35), and a rear wheel fender (23), the travel speed change operation tool (36) and the work implement lifting / lowering operation tool ( Mounting portion, and a work vehicle, characterized in that surrounding said electronic control unit (62) 7). The front end side of the front bracket (52) is directed to the outer side of the vehicle body, and the operation direction of the traveling speed change operation tool (36) and the work implement lifting operation tool (37) is obliquely front and rear with respect to the driver's seat. The work vehicle according to claim 1, wherein the work vehicle is configured as follows. The vehicle body outer side of the side panel (35) is superposed on the rear wheel fender (23) , and the switch & volume unit (41) for dynamic control is arranged at the superposed position of the side panel (35). working vehicle according to claim 1乃or 2, characterized.

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