JP2020084651A - Work vehicle - Google Patents

Abstract

To provide a work vehicle that can store devices for performing remote control in a state in which the devices are unlikely to be damaged, in a place that does not block operators' field of vision and operators' passing.SOLUTION: A wheel loader 1 includes a work device 2 and a cab 12. The cab 12 is provided with a reclining driver seat 31, and a transmitter 40 for remotely controlling driving operation of a vehicle body and operation of the work device 2. The transmitter 40 has a standing first operation lever 401 and a standing second operation lever 402, and is stored in a storage part 35S formed on the rear of a seating surface 311 of the driver seat 31. The storage part 35S is provided with: a protection pipe 43 that has a section which is positioned on the front side of the first operation lever 401 and the second operation lever 402 while the transmitter 40 is stored, and for which the section contacts a rear surface 312A of a backrest 312 inclined rearward; and a pair of belts 441, 442 for fixing the transmitter 40 in the storage part 35S.SELECTED DRAWING: Figure 6

Description

The present invention relates to a work vehicle capable of switching between a boarding operation that is performed by an operator who is in the cab and a remote operation that is remotely performed from the outside.

A work vehicle such as a wheel loader may perform work at a site where the ground is not stable, such as a disaster site, or a site where a large amount of dust flutters. Instead, the vehicle body and work equipment are remotely operated using a transmitter from the outside.

For example, in Patent Document 1, the operator can freely carry it out of the traveling machine body in an independent state. For example, when the operator is sitting on a seat of a vehicle different from the traveling machine body, Disclosed is a hydraulic excavator capable of remotely operating a boom, an arm, and a bucket that form a front attachment of a traveling machine body by an operation device arranged on the right side.

The operating device includes a main body on which the operator's little finger side portion and a forearm can be placed, an operating tool that can be operated in the X, Y, and Z directions, and an elbow rest on which the operator's elbow is placed. And a forearm disengagement restricting body that restricts the forearm of the operator from disengaging to the outside in the left-right direction. When performing remote control using the operating device, fasten the main body with a binding body to the armrest beside the seat of another vehicle with the binding body fixed, put the operation tool and forearm detachment control body in the standing posture, and move the elbow. Pull out the holder to the rear. When the remote operation by the operating device is completed, the operating tool, the elbow rest, and the forearm detachment restricting body can be stored in the main body to be compact.

JP, 2017-115514, A

The operating device for the hydraulic excavator described in Patent Document 1 is stored on the armrest beside the seat when it is not used, but in that case, it interferes with the operation of the operator. Therefore, it is conceivable to store the operating device on the side of the seat opposite to the armrest, but since the side opposite to the armrest is usually the entrance/exit of the operator, it obstructs the passage of the operator. It is also possible to store the operating device on the left or right side of the front or rear of the seat, but the operating device is a relatively large device even though it is compact, so that the operator can see the field of view when checking the front or the rear. Interfere.

Therefore, an object of the present invention is to provide a work vehicle capable of accommodating a device for remote operation in a place that does not hinder the sight of an operator or obstruct the passage of the device in a state in which the device is not easily damaged.

In order to achieve the above-mentioned object, the present invention comprises a working device attached to a frame constituting a vehicle body, and a driver's cab mounted on the frame, wherein the driver's cab is provided with a backrest rearward. A work vehicle provided with a reclining type driver's seat that can be tilted to the side, and a transmitter that is portable outside the cab and is used to remotely perform the traveling operation of the vehicle body and the operation of the working device. In, the transmitter has an upright operation lever, and is housed in a housing portion formed on the rear side of the seat surface of the driving seat. In the housing portion, the operation is performed while the transmitter is housed. A protection member having a portion located on the front side of the lever, the portion being in contact with the back surface of the backrest before the operation lever is contacted when the operation seat is tilted rearward; And a fixing member for fixing the transmitter.

According to the present invention, a device for remote control can be stored in a place that does not hinder the operator's field of view or obstructs passage of the device in a state in which it is unlikely to be damaged. Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

It is an appearance side view showing one example of composition of a wheel loader concerning an embodiment of the present invention. It is a top view which shows the driver's cab seen from the upper part. It is a perspective view showing the accommodation part peripheral part in the state where the transmitter unit is not accommodated. It is a perspective view showing the state where a transmitter unit was stored in a storage part. It is the perspective view which looked at a transmitter unit in the state where it was stored in a storage part from the back side. It is a side view which shows the state which the protective pipe contacted the backrest inclined to the back side.

Hereinafter, as an example of a work vehicle according to an embodiment of the present invention, a wheel loader that performs a cargo handling work for excavating earth and sand or a mineral or the like in an open-pit mine and loading the dump truck or the like will be described.

(Structure of wheel loader 1)
First, the configuration of the wheel loader 1 will be described with reference to FIGS.

FIG. 1 is an external side view showing a configuration example of a wheel loader 1 according to an embodiment of the present invention. FIG. 2 is a plan view showing the inside of the cab 12 as viewed from above. FIG. 3 is a perspective view showing a peripheral portion of the accommodation portion 35S in a state where the transmitter unit 4 is not accommodated.

In the following description, the "front-back direction of the vehicle body" may be simply referred to as "front-back direction", the "vertical direction of the vehicle body" may be simply referred to as "vertical direction", and the "horizontal direction of the vehicle body" may be simply referred to as "horizontal direction". .. Further, of the left-right direction of the vehicle body of the wheel loader 1, the left-hand direction when the operator riding on the wheel loader 1 is facing forward is the “left direction”, and the right-hand direction is the “right direction”.

The wheel loader 1 is an articulated work vehicle that is steered by folding the vehicle body near the center, and includes a front frame 1A that constitutes the front portion of the vehicle body and a rear frame 1B that constitutes the rear portion of the vehicle body. I have it. The front frame 1A and the rear frame 1B are connected by a center joint 1C so as to be rotatable in the left-right direction, and the front frame 1A is bent in the left-right direction with respect to the rear frame 1B.

The front frame 1A is provided with a pair of left and right front wheels 11A (only the left side is shown in FIG. 1) and a working device 2 for performing cargo handling work.

The work device 2 includes a lift arm 21 whose base end is rotatably attached to the front frame 1A, a pair of lift arm cylinders (not shown) for driving the lift arm 21, and a lift arm 21 which is mounted on the tip end of the lift arm 21. A bucket 22 that is movably attached, a bucket cylinder 220 that drives the bucket 22, a bell crank 23 that is rotatably connected to the lift arm 21 and that forms a link mechanism between the bucket 22 and the bucket cylinder 220, and a pair. A plurality of pipes (not shown) for guiding hydraulic oil to the lift arm cylinder and the bucket cylinder 220.

The lift arm 21 rotates upward with respect to the front frame 1A as hydraulic oil flows into each bottom chamber of the pair of lift arm cylinders and each rod extends, and hydraulic oil flows into each rod chamber. As each rod contracts, it rotates downward with respect to the front frame 1A.

The bucket 22 is a work tool for scooping earth and sand and releasing the soil, and leveling the ground. When the working oil flows into the bottom chamber of the bucket cylinder 220 and the rod 220A extends, the tilt (lift arm). 21) and hydraulic oil flows into the rod chamber and the rod 220A contracts to dump (rotate downward with respect to the lift arm 21).

The rear frame 1B includes a pair of left and right rear wheels 11B (only the left side is shown in FIG. 1), a driver's cab 12 in which a space for an operator to ride is formed, and various devices such as an engine and a hydraulic pump. A machine room 13 accommodated therein and a counterweight 14 for maintaining a balance with the working device 2 so that the vehicle body does not tilt are provided. In the rear frame 1B, the cab 12 is arranged in the front part, the counterweight 14 is arranged in the rear part, and the machine room 13 is arranged between the cab 12 and the counterweight 14.

As shown in FIG. 2, the inside of the cab 12 includes a driver's seat 31 on which an operator is seated, a steering wheel 32 for switching the left and right traveling directions of the vehicle body, and a main monitor for displaying a running state of the vehicle body and the like. A front panel 33 and a boarding operation lever 34 for operating the work device 2 are provided. In the cab 12, the driving seat 31 is arranged in the center, the steering wheel 32 is arranged in front of the driving seat 31, the front panel 33 is arranged in front of the steering wheel 32, and the boarding operation lever 34 is arranged on the right side of the driving seat 31. There is.

The driving seat 31 includes a seat surface 311 that is a portion where the operator sits down, a backrest 312 that is a backrest that leans against the operator's back, and an armrest 313L that is provided on the left and right sides of the seat surface 311 and on which the operator's arm is placed. , 313R. The driver's seat 31 is a reclining driver's seat in which the backrest 312 can be tilted rearward.

The boarding operation lever 34 is arranged on the front side of the right armrest 313R so that the operator seated on the driving seat 31 can operate the armrest 313R with the arm placed on the right armrest 313R. For example, when the operator tilts the boarding operation lever 34 backward, the lift arm 21 rises, and when it tilts forward, the lift arm 21 descends. When the operator tilts the boarding operation lever 34 to the left, the bucket 22 tilts, and when the operator tilts it to the right, the bucket 22 dumps.

The wheel loader 1 may be used not only at a mining site such as an open pit mine but also at a site such as a disaster site where the ground is not stable or where a large amount of dust or the like is scattered. Therefore, in the wheel loader 1, it is possible for the operator to switch between the boarding operation in which the operator rides in the cab 12 to operate the wheel loader 1 and the remote operation in which the operator remotely operates the wheel loader 1. .

In the boarding operation, the operator operates the steering wheel 32 or the like to perform a traveling operation while sitting on the driving seat 31, or operates the boarding operation lever 34 to operate the work device 2. On the other hand, in the remote operation, the operator uses the transmitter 40 that is portable outside the operator's cab 12 to operate the vehicle body and the work device 2 at a location away from the installation location of the wheel loader 1.

The transmitter 40 is housed in the housing portion 35S formed on the rear side of the seat surface 311 of the driving seat 31 when the traveling operation of the vehicle body and the operation of the work device 2 are performed by the boarding operation, that is, when not used. As a result, problems such as obstruction of the operator's field of view and obstruction of traffic are solved.

In the present embodiment, the transmitter unit 4 including the transmitter 40 is configured, and when the transmitter 40 is used, only the transmitter 40 may be taken out from the housing portion 35S, or the transmitter unit 4 may be housed together. It can also be taken out from the portion 35S.

As shown in FIGS. 2 and 3, the accommodation portion 35S is a space that is elongated in the left-right direction, and is covered by a cover member 36 that is provided at the rear of the cab 12 to cover the lower portion, the left side, the right side, and the rear side. It is formed by being surrounded by. That is, the bottom surface portion 351, the left side surface portion 352L, the right side surface portion 352R, and the rear surface portion 353 of the housing portion 35S are all part of the cover member 36. The storage part is a lower space formed in the lower part of the storage part 35S (indicated by S in FIG. 6 ), and inside thereof, for example, an air conditioner device for adjusting the temperature, humidity, etc. of the air in the cab 12. Is stored.

The bottom surface portion 351 is located above the lower ends of the left side surface portion 352L and the right side surface portion 352R, and on the front side of the bottom surface portion 351 (accommodation portion 35S), the front surface portion 354 that extends downward from the front end of the bottom surface portion 351. Is provided. Therefore, the front surface portion 354 is also a part of the cover member 36. The cover member 36 is fixed by a plurality of bolts 51 so as not to come off. Note that, in FIG. 3, among the plurality of bolts 51, only three bolts 51 that tighten the front surface portion 354 are shown.

(Structure of transmitter unit 4)
Next, the configuration of the transmitter unit 4 will be described with reference to FIGS.

FIG. 4 is a perspective view showing a state where the transmitter unit 4 is housed in the housing portion 35S. FIG. 5 is a perspective view of the transmitter unit 4 housed in the housing portion 35S as viewed from the rear side. FIG. 6 is a side view showing a state where the protection pipe 43 is in contact with the backrest 312 tilted rearward.

The transmitter unit 4 includes a transmitter 40, a first bracket 41 attached to the bottom surface 351 of the housing portion 35S, a second bracket 42 attached to the front surface 354, and protection for protecting the transmitter 40. The protective pipe 43 as a member and a pair of belts 441 and 442 as a fixing member for fixing the transmitter 40 in the housing portion 35S are provided.

The transmitter 40 has a rectangular parallelepiped shape, and a first operation lever 401 and a second operation lever 402 are provided side by side in the long side direction. As shown in FIG. 4, the transmitter 40 is accommodated in the accommodating portion 35S with its long sides extending in the left-right direction and with the first operation lever 401 and the second operation lever 402 standing upright from the upper surface portion 40A. It should be noted that the first operation lever 401 is arranged on the left side and the second operation lever 402 is arranged on the right side when housed in the housing portion 35S.

When the operator takes out the transmitter 40 from the housing portion 35S and performs remote control, the first operation lever 401 is used in the left hand side of the operator, and the second operation lever 402 is used in the right hand side.

The first operation lever 401 is for performing a traveling operation of the vehicle body. For example, when the operator tilts the first operation lever 401 forward, the vehicle body moves forward, and when it tilts backward, the vehicle body moves backward. When the operator tilts the first operation lever 401 to the left, the traveling direction of the vehicle body switches to the left direction, and when tilted to the right, the traveling direction of the vehicle body switches to the right direction.

The second operation lever 402 is for operating the work device 2. For example, when the operator tilts the second operation lever 402 forward, the lift arm 21 descends, and when tilted backward, the lift arm 21 rises. When the operator tilts the second operation lever 402 leftward, the bucket 22 tilts, and when it tilts rightward, the bucket 22 dumps.

Further, although not shown, the transmitter 40 is provided with a plurality of switches and the like for adjusting the rotational speed of the engine and the like on the upper surface portion 40A in addition to the first operation lever 401 and the second operation lever 402. There is.

As shown in FIGS. 4 and 5, the first bracket 41 includes plate-shaped attached portions 411L and 411R attached to the bottom surface portion 351 of the accommodating portion 35S on both the left and right sides of the transmitter 40, and the attached portion 411L. , 411R, hollow cylindrical portions 412L and 412R standing upright, and side plates 413L and 413R standing upright from one end of the attached portions 411L and 411R on the transmitter 40 side and the rear side of the transmitter 40, respectively. And a back plate portion 414 that connects the pair of left and right side plate portions 413L and 413R.

In the present embodiment, as shown in FIG. 4, the attached portions 411L and 411R are fastened together with the cover member 36 (bottom surface portion 351) using bolts 51 for fixing the cover member 36.

The back plate portion 414 has long sides in the left-right direction, and is erected on the back surface of the transmitter 40 so as to face it. As shown in FIG. 5, the upper end of the back plate portion 414 is located below the upper surface portion 40A of the transmitter 40, and the upper end portion is engaged with the pair of belts 441 and 442. A pair of engaged holes 414A and 414B as a joining portion are formed side by side in the long side direction with a space therebetween.

In addition, as shown in FIGS. 5 and 6, the back plate portion 414 is provided between the pair of left and right cylindrical portions 412L and 412R in a range that does not contact the rear surface portion 353 from the lower end side to the upper end side. It is tilted diagonally backward. Accordingly, when the transmitter 40 is pulled out from the accommodating portion 35S and taken out, the take-out port becomes wider and the transmitter 40 is less likely to come into contact with the back plate portion 414, so that the transmitter 40 is easily taken out.

The second bracket 42 has a long plate-shaped attached plate portion 421 attached to the front surface portion 354 with long sides in the left-right direction, and an engaged portion 422 with which the pair of belts 441 and 442 are engaged. ,have. In the present embodiment, the mounted plate portion 421 is similar to the mounted portions 411L and 411R of the first bracket 41 in that the cover member 36 (the front surface portion 354) and the cover member 36 are fixed using the bolts 51 for fixing the cover member 36. It is fastened together.

As described above, since the first bracket 41 and the second bracket 42 are fastened together with the cover member 36 by the plurality of bolts 51 for fixing the cover member 36, it is necessary to newly process the cover member 36. Instead, the first bracket 41 and the second bracket 42 can be attached respectively. In addition, when removing the transmitter unit 4 together with the housing portion 35S, the plurality of bolts 51 to which the first bracket 41 and the second bracket 42 are attached may be removed.

As shown in FIG. 4, the engaged portion 422 includes a pair of extending portions 422A and 422B that extend upward in the attached plate portion 421 with a gap in the left-right direction, and a pair of extending portions 422A and 422B. And a connecting portion 422C for connecting the in the left-right direction. The connecting portion 422C is provided below the upper surface portion 40A of the transmitter 40.

The protection pipe 43 is formed by bending a pipe that is a rod-shaped member, and extends along the left-right direction of the transmitter 40 in front of the first operation lever 401 and the second operation lever 402 of the transmitter 40. The portion 431, the standing portions 432L and 432R that are erected upward from the bottom surface 351 side of the accommodating portion 35S on the left and right sides of the transmitter 40 on the rear side of the extending portion 431, and the left and right portions of the extending portion 431. It has connection parts 433L and 433R which connect each of both ends and each of standing parts 432L and 432R.

Outer diameters of the standing portions 432L and 432R are smaller than inner diameters of the cylindrical portions 412L and 412R of the first bracket 41, respectively, and are inserted into the cylindrical portions 412L and 412R from above.

Knobs 52 are attached to the outer peripheries of the cylindrical portions 412L and 412R from the front, and by tightening the knobs 52 inward (rearward), the standing portions 432L and 432R are respectively cylindrical portions 412L and 412L. It is firmly held by being sandwiched between the knob 52 and the inner peripheral surfaces of the cylindrical portions 412L and 412R so as to be pressed against the inner rear surface of the 412R. As a result, even if a large vibration occurs in the wheel loader 1 due to unevenness of the road surface, that is, the cylindrical portions 412L and 412R of the first bracket 41 fix the standing portions 432L and 432R of the protection pipe 43 to the bottom portion 351 respectively. It corresponds to a fixed part for doing.

As shown in FIG. 6, the extending portion 431 corresponds to a portion located on the front side of the first operating lever 401 and the second operating lever 402 in a state where the transmitter 40 is housed in the housing portion 35S, and the transmitter 40 When the backrest 312 of the driving seat 31 is tilted rearward by a predetermined angle in a state where the backrest 312 is accommodated in the accommodation portion 35S, the backrest 312 does not come in contact with the upper end of the first operation lever 401 and the upper end of the second operation lever 402. It is configured to contact the back surface 312A of the rest 312. In addition, in FIG. 6, a state in which the backrest 312 is not tilted rearward is shown by a broken line.

The protection pipe 43 configured in this manner protects the transmitter 40 housed in the housing portion 35S and suppresses damage to the operation seat 31 due to reclining. Therefore, in the wheel loader 1, the transmitter 40 can be housed in the housing portion 35S, which is a place where it does not hinder the operator's field of view or obstructs passage, in a state in which it is difficult to damage the transmitter 40.

The rearward tilt angle θ of the backrest 312 when the back surface 312A of the backrest 312 contacts the extending portion 431 of the protection pipe 43 (hereinafter, referred to as “predetermined tilt angle θ”) is the backrest. It is smaller than the maximum rearward tilt angle θmax of 312 (θ<θmax). The predetermined tilt angle θ can be appropriately adjusted by the vertical position (position in the height direction) of the extending portion 431, the fixed position of the standing portions 432L and 432R of the protection pipe 43, and the like. Since the predetermined tilt angle θ is set with a certain tilt angle to the rear side of the backrest 312, the reclining function of the driving seat 31 is not significantly impaired.

Further, when the operator wants to recline the driving seat 31 largely to the maximum tilt angle θmax, for example, during a work break, the knob 52 is loosened and the standing portions 432L and 432R of the protection pipe 43 are removed from the cylindrical portions 412L and 412R. Each of them may be removed and the transmitter 40 may be placed in a different place in the cab 12 other than the accommodation section 35S. In this case, since it is not necessary to secure the operator's field of view, there is no particular problem even if the transmitter 40 is placed at an appropriate position on the rear left side or the rear right side of the cab 12, for example.

In the present embodiment, the pair of left and right connecting portions 433L and 433R of the protection pipe 43 are inclined obliquely upward from the standing portions 432L and 432R side toward the extending portion 431 side. Accordingly, when the transmitter 40 is pulled upward from the housing portion 35S and taken out, the take-out port becomes wider and the transmitter 40 is less likely to come into contact with the extending portion 431, so that the transmitter 40 is easily taken out. In addition, by tilting the connecting portions 433L and 433R respectively, it is possible to temporarily extend the connecting portions 433L and 433R from the standing portions 432L and 432R and then toward the extending portion 431 (toward the front side). The length of the connecting portions 433L and 433R can be shortened as compared with the case of bending at a right angle.

The pair of belts 441 and 442 include a pair of engaged holes 414A and 414B formed at the upper end of the back plate portion 414 of the first bracket 41 and an engaged portion 422 (connecting portion 422C) of the second bracket 42. As shown in FIG. 4, the transmitter 40 is pressed from above to be fixed to the bottom surface portion 351 of the housing portion 35S by engaging with and. As described above, by using the pair of belts 441 and 442 for the fixing member of the transmitter 40, the transmitter 40 can be easily removed.

Further, in the present embodiment, the rubber sheet 45 for preventing slippage is provided between the transmitter 40 and the bottom surface portion 351 of the accommodating portion 35S, so that the movement of the transmitter 40 inside the accommodating portion 35S is restricted. I am sure.

The embodiments of the present invention have been described above. It should be noted that the present invention is not limited to the above-described embodiment, and various modifications are included. For example, the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those including all the configurations described. Further, a part of the configuration of this embodiment can be replaced with the configuration of another embodiment, and the configuration of this embodiment can be added to the configuration of another embodiment. Furthermore, it is possible to add/delete/replace other configurations with respect to a part of the configurations of the present embodiment.

For example, although the protection pipe 43 is used as the protection member in the above-described embodiment, the present invention is not limited to this, and the protection pipe 43 is provided on the front side of the first operation lever 401 and the second operation lever 402 with the transmitter 40 housed in the housing portion 35S. There is no particular limitation on the shape as long as the structure has a portion to be positioned and the portion is in contact with the back surface 312A of the reclining backrest 312.

Further, although the pair of belts 441 and 442 are used as the fixing members in the above-described embodiment, the present invention is not limited to this, and the material, shape, and number are not particularly limited as long as the members can fix the transmitter 40 in the housing portion 35S. Absent.

Further, in the above embodiment, the transmitter 40 is provided with the two operation levers of the first operation lever 401 and the second operation lever 402, but the number of operation levers is appropriately changed according to the specifications of the transmitter 40. It is possible to

1: Wheel loader (work vehicle)
1A: Front frame 1B: Rear frame 2: Working device 12: Driver's cab 31: Driver's seat 35S: Housing 36: Cover member 40: Transmitter 41: First bracket 42: Second bracket 43: Protective pipe (protective member)
51: Bolt 311: Seat 312: Backrest (backrest)
312A: rear surface 351: bottom surface portion 354: front surface portion 401: first operation lever (operation lever)
402: Second operation lever (operation lever)
412L, 412R: Cylindrical part (fixed part)
414: Back plate portions 414A, 414B: Engagement holes (engagement portions)
422: Engagement part 431: Extension part 432L, 432R: Standing part 433L, 433R: Connection part 441, 442: Belt (fixing member)
S: Storage (lower space)

Claims (4)

A work device attached to a frame that constitutes a vehicle body; and a driver's cab mounted on the frame, wherein the driver's cab has a reclining type driver's seat in which the backrest can be tilted backward. In a work vehicle provided with a transmitter that is portable outside a driver's cab and that remotely performs a traveling operation of the vehicle body and an operation of the working device,
The transmitter is
Having an upright operating lever, housed in a housing formed on the rear side of the seat surface of the operating seat,
In the accommodation section,
It has a part located on the front side of the operation lever in a state of accommodating the transmitter, and when the operation seat is tilted rearward, the part contacts the back surface of the backrest before the operation lever contacts. Protection member to
And a fixing member for fixing the transmitter in the housing portion. In the work vehicle according to claim 1,
The protective member is
An extending portion extending along the left-right direction of the transmitter on the front side of the operation lever,
On each of the left and right sides of the transmitter on the rear side of the extending section, an upright section that stands upright from the bottom side of the accommodating section,
A connecting portion that connects each of the left and right ends of the extending portion and the standing portion,
The working vehicle, wherein the connecting portion is inclined obliquely upward from the standing portion side toward the extending portion side. In the work vehicle according to claim 2,
The protection member is attached to the bottom surface portion of the accommodating portion via a first bracket,
The first bracket is
A fixing portion for fixing the standing portion to the bottom portion on each of the left and right sides of the transmitter,
A pair of left and right fixed parts, and a back plate part standing upright to face the rear surface of the transmitter,
The work vehicle, wherein the back plate portion is inclined obliquely rearward from the lower end side toward the upper end side. In the work vehicle according to claim 3,
A second bracket attached to a front portion located on the front side of the housing portion,
The fixing member engages with an engaged portion provided at a position lower than an upper surface portion of the transmitter in each of the back plate portion of the first bracket and the second bracket, Is a belt that is pressed against from above to be fixed to the bottom surface portion of the housing portion,
Both the bottom surface portion and the front surface portion are a part of a cover member that covers a lower space formed in a lower portion of the housing portion,
The work vehicle, wherein each of the first bracket and the second bracket is fastened together with the cover member by a bolt for fixing the cover member.

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