JP7065809B2 - Work vehicle - Google Patents

Description

The present invention relates to a work vehicle equipped with a satellite positioning unit that receives position information from a satellite.

As a work vehicle equipped with a satellite positioning unit, for example, the combine described in Patent Document 1 is known. The combine described in Patent Document 1 is provided with a satellite positioning unit that receives position information from a satellite above the cabin that covers the driving unit, and various controls are performed using the position information received from the satellite. There is.

Japanese Unexamined Patent Publication No. 2018-117613

In the combine described in Patent Document 1, the satellite positioning unit has an antenna portion on one side of the main body portion, and the antenna portion is provided so as to project from above the main body portion in an upright state. The standing antenna portion may come into contact with other objects when the work vehicle is transported or moved, or when it is stored in a storage room or the like, which may be an obstacle. In that case, the antenna portion can be in a retracted state lower than the upper surface of the main body portion, for example, by configuring the antenna portion so as to be swingable from the base portion to the tip end side.

The satellite positioning unit needs position correction when the aircraft is tilted and the position fluctuates greatly. Therefore, the aircraft positioning unit is arranged closer to the center in the left-right direction of the aircraft in order to minimize the position correction. However, if the satellite positioning unit is placed closer to the center in the left-right direction of the aircraft, it may be placed in a position deeper than the end of the cabin in plan view due to the influence of the width and arrangement of the cabin in the left-right direction of the aircraft. be. In that case, it becomes difficult for the driver or the like of the work vehicle to operate the antenna portion from the end portion of the cabin to bring the antenna portion into the upright state or the retracted state. As a result, the operability of the antenna portion of the satellite positioning unit in the work vehicle is reduced.

In view of the above situation, there is a demand for a work vehicle that can easily change the posture of the antenna portion of the satellite positioning unit arranged above the cabin for the driving portion.

The characteristic configuration of the work vehicle of the present invention includes a driving unit, a cabin covering the driving unit, a satellite positioning unit having a main body unit and an antenna unit, and receiving position information from a satellite, and the satellite positioning is provided. The unit is provided in a state of being located above the roof portion in the cabin, and the antenna portion is in an upright state protruding above the upper surface of the main body portion and a retracted state located below the upper surface portion. A posture changing mechanism that is supported by the main body and operates the antenna portion in a posture-changeable state is provided, and the posture changing mechanism includes a first member that operates the antenna portion and the above-mentioned in a plan view. A second member located on the opposite side of the main body portion from the antenna portion and manually operated by the operator, and a third member connecting the first member and the second member are provided. There is something in it.

According to this feature configuration, the attitude change mechanism that changes the attitude of the antenna part of the satellite positioning unit is on the opposite side of the antenna part from the first member that operates the antenna part and the main body part of the satellite unit in plan view. It is provided with a second member located at and manually operated by an operator, and a third member connecting the first member and the second member. Therefore, even if the antenna portion of the satellite positioning unit is in a position where it is difficult to operate from the end side of the cabin in plan view, by arranging the second member of the attitude change mechanism on the end side of the cabin, the cabin can be operated. The posture of the antenna part can be changed from the side of the end part. As a result, the attitude of the antenna portion can be easily changed from the side of the end portion of the cabin, and the operability of the antenna portion of the satellite positioning unit is improved. Since the antenna portion of the satellite positioning unit protrudes to the upper side of the main body portion by being in an upright state, it is possible to receive position information and the like satisfactorily. In addition, since the antenna part of the satellite positioning unit is located below the upper surface of the main body part when it is in the retracted state, it is located from the main body part when the work vehicle is transported or moved or stored in a storage room or the like. It is possible to avoid contact with other objects above.

Further, in the present invention
The satellite positioning unit is arranged at a side end portion of the roof portion in the cabin, and the antenna portion is arranged on the center side of the roof portion with respect to the main body portion in a plan view. It is preferable that the roof portion is arranged on the center side of the roof portion with respect to the main body portion in a plan view.

According to this feature configuration, since the satellite positioning unit is arranged at the side end of the roof portion in the cabin, the satellite positioning unit can be easily attached and detached from the end end side of the cabin, and the satellite positioning can be performed. The maintenance work of the unit can also be easily performed. Further, since the antenna portion is on the center side of the roof portion with respect to the main body portion in a plan view, the antenna portion can be protected by the main body portion without protruding toward the end portion side of the roof portion. Further, since the first member is arranged on the center side of the roof portion with respect to the main body portion in a plan view, the antenna portion can be reliably operated by the first member.

Further, in the present invention
The antenna portion is supported by the main body portion in a state in which it can swing around the first axis along the horizontal direction, and the third member is around the second axis parallel to the first axis. The first member and the second member are rotatably configured, and the first member and the second member are configured to swing integrally around the second axis by the rotation of the third member. Left and right contact portions that sandwich the antenna portion from both left and right sides are provided, and when the third member is swung, the left and right contact portions swing around the second axis of the antenna. It is preferable that the antenna portion slides along the extending direction of the portion and one of the left and right contact portions pushes the side portion of the antenna portion.

According to this feature configuration, the antenna portion can swing around the first axis center, and the posture changing mechanism allows the first member and the second member to rotate around the second axis center. Since it is configured to swing integrally around the second axis, the antenna portion itself is swinged by the swing of the first member. As described above, since both the antenna portion and the posture changing mechanism are configured to operate by swinging, they can be easily configured. Further, when the third member is swung, the left and right contact portions provided on the first member slide and move, and one of the contact portions is pushed to change the posture of the antenna portion. Ru. That is, the contact portion slides and moves with respect to the antenna portion to change the posture of the antenna portion while changing the position at which the antenna portion is pushed and operated. As a result, the posture of the antenna portion can be changed smoothly, and the load applied by the contact portion to the antenna portion can be reduced. As a result, the durability of the antenna portion and the posture changing mechanism can be improved.

Further, in the present invention
It is preferable that the first axis and the second axis are set at different positions in a plan view.

According to this feature configuration, the first axis, which is the swing center of the antenna portion, and the second axis, which is the swing center of the attitude change mechanism, are set at different positions in plan view. On the other hand, the degree of freedom of the arrangement area of the second member is increased. Further, when the second axis is arranged on the side where the antenna portion is displaced in the retracted state with respect to the first axis in a plan view, the first member is operated to change the posture of the antenna portion in the upright state. It swings around the second axis and moves toward the first axis. At this time, by setting the shape of the first member so that the center of gravity of the first member exceeds the position of the second axis and is on the side of the first axis, the antenna portion whose posture has been changed to the standing state is set. On the other hand, the first member will fall down. As a result, the antenna portion can be held in an upright state by the first member without providing a locking mechanism.

Further, in the present invention
It is preferable that a bracket for supporting the satellite positioning unit in the cabin is provided, and the bracket is supported so as to be swingable up and down with respect to the cabin.

According to this feature configuration, the satellite positioning unit can be easily changed from the upper position of the cabin to the lower position state by simply swinging the bracket up and down.

It is a left side view showing a head-feeding combine. It is a top view which shows the head-feeding type combine. It is a figure which shows the satellite positioning system in this combine. It is a front view which shows the support structure of a satellite positioning unit. It is a figure explaining the operation of the antenna part. It is a figure explaining the operation of the antenna part. It is a front sectional view of a satellite positioning unit. It is a top view of the satellite positioning unit. It is a perspective view which shows the support structure of the satellite positioning unit which concerns on another embodiment. It is a front view which shows the satellite positioning unit in a high position state which is the satellite positioning unit which concerns on another embodiment. It is a front view which shows the satellite positioning unit in a low position state which is the satellite positioning unit which concerns on another embodiment.

A mode for carrying out the present invention will be described with reference to the drawings. In the following description, the direction of the arrow F shown in FIGS. 1 and 2 is the "front side of the aircraft", the direction of the arrow B is the "rear side of the aircraft", the direction of the arrow L shown in FIG. 2 is the "left side of the aircraft", and the arrow. The direction of R is "the right side of the aircraft".

[Overall composition of combine harvester]
1 and 2 show a head-feeding combine 100 as an example of the "working vehicle" according to the present invention. The combine 100 is provided with an airframe frame 1 and a pair of left and right crawler traveling devices 2. In front of the machine, a cutting section 3 for cutting the planted culm in the field is provided. The cutting section 3 is provided with a weeding tool 4, a plurality of raising devices 5 for raising the planted culm, and a cutting blade 6 for cutting the planted culm.

On the right side of the front part of the machine body, a driving unit 7 and a cabin 8 covering the operating unit 7 are provided. Behind the cabin 8, a grain storage tank 9 for storing the grains after the threshing process is provided. On the left side of the grain storage tank 9, a threshing device 10 for threshing the cut grain culm is provided. A transport device 11 for transporting the harvested culm toward the threshing device 10 is provided across the harvesting unit 3 and the threshing device 10.

A grain discharge device 12 for discharging the grains in the grain storage tank 9 to the outside is provided. The grain discharge device 12 is composed of a metal member. The grain discharging device 12 is provided with a vertical transport unit 13 connected to the grain storage tank 9 and a horizontal transport unit 14 connected to the upper end of the vertical transport unit 13 so as to be swingable up and down. .. The grain discharge device 12 can swivel around a swivel axis Z1 extending in the vertical direction. The lateral transport portion 14 can swing up and down around a swing axis extending in the horizontal direction. At the front of the threshing device 10, a cradle 15 on which the grain discharging device 12 is placed is provided. The grain discharging device 12 is stored in the state where the grain discharging device 12 is placed on the cradle 15.

The driver unit 7 is provided with a driver's seat 16 in which the driver sits. The cabin 8 is provided with a cabin frame 17 that supports the cabin 8. The cabin frame 17 is provided with a roof frame 18 that supports the roof portion 8A of the cabin 8.

[Satellite positioning unit]
FIG. 3 shows the satellite positioning system in this combine. The combine 100 is provided with a satellite positioning unit 19 that outputs the position information of the combine 100 based on the position information from the satellite S1 for GPS (Global Positioning System). The position information output by the satellite positioning unit 19 can be used, for example, in the case of automatically traveling in a field along a traveling route, or in precision agriculture in which the quality of grains and the cutting position are associated with each other to manage the field.

The satellite positioning unit 19 includes a GPS antenna 20 that receives position information from the satellite S1, an antenna 21 for communication with the base station S2 (corresponding to the "antenna portion" according to the present invention), and a GPS antenna 20. 22 (corresponding to the "main body portion" according to the present invention) and 22 (corresponding to the "main body portion") are provided. The satellite positioning unit 19 corrects the position information from the satellite S1 received by the GPS antenna 20 with the correction information received by the communication antenna 21 from the base station S2, and outputs the position information of the combine 100. There is.

As shown in FIGS. 1 and 3, the satellite positioning unit 19 is provided at a position higher than the lateral transport portion 14 in the retracted state, with the lower end of the case 22 located above the upper end of the roof portion 8A. There is. That is, the satellite positioning unit 19 is provided at a position higher than the portion (roof frame 18) located at the highest position in the cabin frame 17.

As shown in FIG. 2, the GPS antenna 20 (satellite positioning unit 19) is provided at the center of the aircraft in the left-right direction of the aircraft. Specifically, the GPS antenna 20 is provided at a central position between the crawler traveling device 2 on the left side and the crawler traveling device 2 on the right side in the left-right direction of the machine body. The GPS antenna 20 is provided at substantially the same position as the front end portion of the pair of left and right crawler traveling devices 2 in the front-rear direction of the machine body.

As shown in FIG. 4, the satellite positioning unit 19 is supported by the roof frame 18 via the bracket 23. The roof frame 18 includes a front frame 18A extending in the left-right direction of the machine body to form a front edge portion of the roof frame 18, and an inner edge portion (left edge) of the roof frame 18 extending in the front-rear direction of the machine body in the left-right direction of the machine body. The left frame 18B and the left frame 18B constituting the part) are provided. The bracket 23 is provided with a lateral portion 23A extending in the left-right direction of the machine body and a vertical portion 23B extending in the vertical direction. The horizontal portion 23A and the vertical portion 23B are composed of, for example, a square pipe. The sideways portion 23A extends from the left side frame 18B to the inside (left side) of the machine body in the left-right direction of the machine body. The vertical portion 23B extends upward from the horizontal portion 23A. A pedestal 30 on which the satellite positioning unit 19 is placed and fixed is attached to the vertically oriented portion 23B.

A substantially L-shaped plate 24 is fixed (for example, welded and fixed) to a corner portion between the left end portion of the front side frame 18A and the front end portion of the left side frame 18B. The right end portion of the sideways portion 23A is fixed (for example, welded and fixed) to the left side surface of the plate 24. That is, the satellite positioning unit 19 is supported by the corner portion between the left end portion of the front side frame 18A and the front end portion of the left side frame 18B in the roof frame 18. In this way, the satellite positioning unit 19 is arranged at the side end portion of the roof portion 8A in the cabin 8.

In the satellite positioning unit 19, the communication antenna 21 is in a state in which the posture can be changed between an upright state protruding above the upper surface 22a of the case 22 and a retracted state located below the upper surface 22a of the case 22. It is supported by 22. The communication antenna 21 is arranged on the center side of the roof portion 8A with respect to the case 22 in a plan view. The communication antenna 21 is supported by the case 22 in a state in which it can swing around the first axis X1 along the horizontal direction.

As shown in FIGS. 4 to 8, the combine 100 is provided with a posture changing mechanism 40 for controlling the posture of the communication antenna 21. The posture changing mechanism 40 includes a swing arm 41 (corresponding to the "first member" of the present invention), an operation lever 42 (corresponding to the "second member" of the present invention), a swing arm 41, and an operation lever 42. It is configured to include a linking member 43 (corresponding to the "third member" of the present invention) for connecting the members. The swing arm 41 operates the communication antenna 21. Specifically, the swing arm 41 abuts on the communication antenna 21 and operates the communication antenna 21 to change its posture between the upright state and the retracted state. The operation lever 42 is located on the side opposite to the communication antenna 21 with respect to the case 22 in a plan view and is manually operated by the operator.

The linking member 43 extends horizontally below the pedestal 30 and is configured to be rotatable around a second axis X2 parallel to the first axis X1. The swing arm 41 and the operation lever 42 are configured to swing integrally around the second axis X2 by the rotation of the linking member 43. The linking member 43 is rotatably supported by a plurality of support portions 44 provided at the lower part of the pedestal 30.

The swing arm 41 is provided with left and right contact portions 45 and 46 that sandwich the communication antenna 21 from both the left and right sides. The left and right abutting portions 45, 46 swing around the second axis X2 when the linking member 43 is swung by the operating lever 42, and the communication antennas along the extending direction of the communication antenna 21. It slides with respect to the side portion of 21. At that time, one of the left and right contact portions 45 and 46 pushes and operates the side portion of the communication antenna 21. As a result, the communication antenna 21 is operated to change its posture between the upright state and the retracted state.

5 and 6 show a communication antenna 21 whose posture is changed by the posture changing mechanism 40. In order to swing the communication antenna 21 in the first direction W1 and change the posture of the standing communication antenna 21 to the retracted state, the operating lever 42 is set to the second axis X2 in FIG. 5, which is the right side view of the machine. Swing clockwise around. Then, the swing arm 41 also swings clockwise, and the left and right contact portions 45, 46 swing around the second axis X2, and the side of the communication antenna 21 is along the extending direction of the communication antenna 21. Slide and move with respect to the part. Further, the contact portion 45 pushes and operates the side portion of the communication antenna 21. As a result, the posture of the communication antenna 21 is changed to the retracted state.

In order to swing the communication antenna 21 in the second direction W2 and change the posture of the stored communication antenna 21 to the upright state, the operation lever 42 is set to the second axis X2 in FIG. 6 which is the right side view of the machine body. Swing counterclockwise around. Then, the swing arm 41 also swings counterclockwise, and the left and right contact portions 45 and 46 swing around the second axis X2 while the communication antenna 21 extends along the extension direction of the communication antenna 21. Slide to the side of. Further, the contact portion 46 pushes and operates the side portion of the communication antenna 21. As a result, the posture of the communication antenna 21 is changed to the upright state.

The first axis X1 and the second axis X2 are set at different positions in a plan view. In the present embodiment, the second axis X2 is located in front of the first axis X1 in a plan view. The entire swing arm 41 is formed in a rectangular shape in a side view, and in the state shown in FIG. 5, a portion 41b supported by the second axis X2 is formed so as to project forward from the lower portion of the rectangular portion 41a to the front of the machine body. ing. Due to the position of the second axis X2 and the shape of the swing arm 41, the center of gravity of the swing arm 41 is on the rear side of the machine body with respect to the second axis X2 when the communication antenna 21 is in the upright state. As a result, the swing arm 41 leans toward the side where the communication antenna 21 is in the upright state, so that the swing arm 41 maintains the upright state of the communication antenna 21. On the other hand, when the communication antenna 21 is in the retracted state, the center of gravity of the swing arm 41 is on the front side of the machine body with respect to the second axis X2. As a result, the swing arm 41 leans toward the side where the communication antenna 21 is in the retracted state, so that the swing arm 41 maintains the retracted state of the communication antenna 21. The shape of the swing arm 41 is not specified as a rectangular shape and may be another shape.

[Another Embodiment]
(1) In the above embodiment, the cabin 8 is provided on the right side in the front part of the airframe. However, instead of this, the cabin 8 may be provided on the left side of the front part of the machine body or on the center side in the left-right direction of the machine body.

(2) In the above embodiment, the "working vehicle" according to the present invention is a head-feeding combine, but the "working vehicle" may be another work vehicle such as a normal combine or a tractor.

(3) In the above embodiment, the satellite positioning unit 19 is arranged at the left front end portion of the roof portion 8A of the cabin 8 in a plan view. Instead of this, the satellite positioning unit 19 may be arranged at another end of the roof portion 8A of the cabin 8 or at a central portion other than the end portion.

(4) In the above embodiment, in the satellite positioning unit 19, the communication antenna 21 swings toward the front side of the airframe to enter the retracted state, but the communication antenna 21 swings toward the rear side of the airframe. It may be configured to be stored in. Further, the communication antenna 21 may be configured to be retracted by swinging to the left side of the machine body or the right side of the machine body.

(5) As shown in FIGS. 9 to 11, the position where the satellite positioning unit 19 is changed into a high position state located above the uppermost end of the roof portion 8A and a low position state lower than the high position state. A changing mechanism 26 may be provided. The satellite positioning unit 19 is supported on one side (left side) of the cabin 8 in the left-right direction of the machine body so as to be swingable up and down around an axis Y1 extending in the front-rear direction of the machine body. The position change mechanism 26 is configured to change between a high position state and a low position state by swinging the satellite positioning unit 19 up and down around the axis Y1.

More specifically, the position changing mechanism 26 includes a mounting bracket 27, a fixing bracket 28, and a pair of front and rear support shafts 29. The satellite positioning unit 19 is supported by a left edge portion (left side frame 18B) of the roof frame 18 via a mounting bracket 27 and a fixing bracket 28 (both corresponding to the “bracket” according to the present invention).

A satellite positioning unit 19 is attached to the attachment bracket 27. The mounting bracket 27 is supported by the fixing bracket 28 via a pair of front and rear support shafts 29 so as to be swingable up and down around the axis Y1. The mounting bracket 27 has a pedestal 30 on which the satellite positioning unit 19 is mounted and fixed, an arm portion 31 extending from each of the front and rear ends of the pedestal 30 toward the axis Y1 side, and a front arm portion 31 and a rear side. A fixed portion 32 extending over the arm portion 31 of the above is provided.

The fixing bracket 28 is fixed to the left side frame 18B. The fixing bracket 28 includes a bottom plate portion 33, a support portion 34 rising from each of the front and rear ends of the bottom plate portion 33, a lower fixed portion 35 hanging from the lower surface of the bottom plate portion 33, and a front support portion 34 and a rear side. An upper fixed portion 36 extending over the support portion 34 of the above is provided. An arm portion 31 is supported on the support portion 34 via a support shaft 29 so as to be swingable up and down around the axis Y1.

According to such a configuration, as shown in FIG. 10, the arm portion 31 is supported by the arm portion 31 in a state where the mounting bracket 27 is swung upward around the axis Y1 and the satellite positioning unit 19 is in a high position state. It is fixed to 34 with a bolt 37, and the fixing portion 32 is fixed to the upper fixed portion 36 with a bolt 38. At that time, the mounting bracket 27 does not swing any more because the fixing portion 32 comes into contact with the upper fixed portion 36. In this way, the satellite positioning unit 19 can be fixed in a high position.

Further, as shown in FIG. 11, after releasing the bolt fixing of the arm portion 31 to the support portion 34 and the bolt fixing of the fixing portion 32 to the upper fixed portion 36, the mounting bracket 27 is placed on the lower side around the axis Y1. In a state where the satellite positioning unit 19 is in a low position, the fixing portion 32 is fixed to the lower fixed portion 35 by a bolt 38. At that time, the mounting bracket 27 does not swing any more because the fixing portion 32 comes into contact with the lower fixed portion 35. In this way, the satellite positioning unit 19 can be fixed in a low position.

Here, in the low position state, the satellite positioning unit 19 is located below the uppermost end of the roof portion 8A. In the present embodiment, the satellite positioning unit 19 is located below the lowermost end of the roof portion 8A in the low position state.

(6) In the above alternative embodiment (5), the satellite positioning unit 19 is located below the uppermost end of the roof portion 8A in the low position state, but if it is lower than the high position state, it is in the low position state. The satellite positioning unit 19 may be located above the uppermost end of the roof portion 8A.

(7) In the above alternative embodiment (5), the satellite positioning unit 19 is supported on the left side of the cabin 8 so as to be swingable up and down, but even if it is supported on the right side of the cabin 8 so as to be swingable up and down. Alternatively, it may be supported by the front part or the rear part of the cabin 8 so as to be swingable up and down. Further, although the satellite positioning unit 19 can swing up and down around the axis Y1 extending in the front-rear direction of the machine, it may swing up and down around the axis extending in the left-right direction of the machine.

(8) In the above embodiment, the communication antenna 21 is supported by the case 22 in a state in which it can swing around the first axis X1 along the horizontal direction. Instead of this, the communication antenna 21 may be configured to extend and contract in the vertical direction with respect to the case 22. In this case, in the posture changing mechanism 40, the first member that operates the communication antenna 21 has a holding portion that holds a part of the communication antenna 21 and can be displaced in the same direction as the communication antenna 21. It is composed.

(9) In the above embodiment, the satellite positioning unit 19 is provided at the center of the machine (specifically, the central position between the crawler running device 2 on the left side and the crawler running device 2 on the right side) in the left-right direction of the machine. ing. However, instead of this, the satellite positioning unit 19 may be provided at the center position of the cutting width in the left-right direction of the machine body. Alternatively, the satellite positioning unit 19 may be provided at the center position between the crawler traveling device 2 on the left side and the crawler traveling device 2 on the right side in the left-right direction of the machine body, and at the center position of the cutting width.

INDUSTRIAL APPLICABILITY The present invention can be widely used not only for head-feeding combine harvesters, but also for various agricultural work machines such as ordinary combine harvesters, tractors, and mowers, and work vehicles such as construction machines.

1: Aircraft frame 2: Crawler traveling device 3: Cutting unit 6: Cutting blade 7: Driving unit 8: Cabin 8A: Roof unit 9: Grain storage tank 10: Grain removal device 11: Transport device 16: Driver's seat 17: Cabin frame 18: Roof frame 19: Satellite positioning unit 20: GPS antenna 21: Communication antenna (antenna part)
22: Case (main body)
22a: Top surface 26: Position change mechanism 27: Mounting bracket (bracket)
28: Fixed bracket (bracket)
30: Pedestal 40: Posture change mechanism 41: Swing arm (first member)
42: Operation lever (second member)
43: Linking member (third member)
45, 46: Contact part 100: Combine S1: Satellite S2: Base station X1: First axis X2: Second axis Y1: Axis

Claims (5)

With the driver
The cabin that covers the driving unit and
It is equipped with a satellite positioning unit that has a main body and an antenna and receives position information from the satellite.
The satellite positioning unit is provided so as to be located above the roof portion in the cabin.
The antenna portion is supported by the main body portion in a state in which the posture can be changed between an upright state protruding above the upper surface of the main body portion and a retracted state located below the upper surface portion.
A posture change mechanism for changing the posture of the antenna unit is provided.
The posture changing mechanism includes a first member that operates the antenna portion, a second member that is located on the opposite side of the main body portion from the main body portion and is manually operated by an operator, and the above-mentioned. A work vehicle provided with a third member that connects the first member and the second member. The satellite positioning unit is arranged at a side end portion of the roof portion in the cabin, and the antenna portion is arranged on the center side of the roof portion with respect to the main body portion in a plan view.
The work vehicle according to claim 1, wherein the first member is arranged on the center side of the roof portion with respect to the main body portion in a plan view. The antenna portion is supported by the main body portion in a state in which it can swing around the first axis along the horizontal direction.
The third member is configured to be rotatable around a second axis parallel to the first axis.
The first member and the second member are configured to swing integrally around the second axis by the rotation of the third member.
The first member is provided with left and right contact portions that sandwich the antenna portion from both the left and right sides.
When the third member is swung, the left and right contact portions slide around the second axis center and slide with respect to the side portion of the antenna portion along the extending direction of the antenna portion. The work vehicle according to claim 1 or 2, wherein the work vehicle moves and one of the left and right contact portions pushes the side portion of the antenna portion. The work vehicle according to claim 3, wherein the first axis and the second axis are set at different positions in a plan view. A bracket that supports the satellite positioning unit in the cabin is provided.
The work vehicle according to any one of claims 1 to 4, wherein the bracket is supported so as to be swingable up and down with respect to the cabin.

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