Work vehicles

Abstract

To provide a work vehicle capable of easily changing the position of a position detection device.SOLUTION: A work vehicle includes: a position detection device 100 capable of detecting a position of a vehicle body; a support frame 300 that supports the position detection device 100 and is disposed so as to extend between left and right pillars 12 of the cabin 10; and connecting portions (a first connecting portion 400 and a second connecting portion 500) that rotatably connect the support frame 300 to the left and right pillars 12, respectively.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to work vehicle technology. [Background technology]

[0002] BACKGROUND ART Conventionally, technology for a work vehicle equipped with a position detection device capable of detecting the position of the vehicle body has been publicly known, as described in Patent Document 1, for example.

[0003] Patent Document 1 describes a tractor equipped with an antenna unit that can detect the position of the vehicle body by receiving radio signals from positioning satellites that constitute a satellite positioning system. The antenna unit is mounted so as to be located at the center of the cabin in the left-right direction. The antenna unit is also mounted so as to be rotatable between a normal use position that protrudes above the roof of the cabin and a non-use position that is lower than the roof.

[0004] In the tractor described in Patent Document 1, when changing the position of the antenna unit, the operator must manually rotate the antenna unit and then fix it in the new position. However, since the antenna unit is located in the center of the cabin in the left-right direction, it is difficult for an operator standing to the side of the tractor to reach. For this reason, when changing the position, the operator must use a stepladder or the like, which is considered to make it difficult to change the position of the antenna unit. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6640767 Summary of the Invention [Problem to be solved by the invention]

[0006] One aspect of the present disclosure has been made in consideration of the above-described situation, and the problem it aims to solve is to provide a work vehicle that can easily change the position of a position detection device. [Means for solving the problem]

[0007] The problem to be solved by one embodiment of the present disclosure has been described above, and next, the means for solving this problem will be described.

[0008] A work vehicle according to one aspect of the present disclosure includes a position detection device capable of detecting the position of a vehicle body, and a cabin that supports the position detection device. Supporting the roof of The vehicle body includes a support frame disposed across the left and right pillars, and a connecting portion that rotatably connects the support frame to each of the left and right pillars. According to one aspect of the present disclosure, the position of the position detection device can be easily changed. In one aspect of the present disclosure, the support frame is rotatable between an in-use position in which the position detection device is located above the roof and an in-use position in which the position detection device is located below the roof. In one embodiment of the present disclosure, the connecting portion includes a first connecting portion that rotatably connects one end of the support frame to one of the left and right pillars, and a second connecting portion that rotatably connects the other end of the support frame to the other of the left and right pillars, and the support frame is configured to be rotatable relative to the left and right pillars via the first connecting portion and the second connecting portion around a central axis facing in the left-right direction.

[0009] The support frame according to one aspect of the present disclosure is arranged so that both ends are positioned outside the left and right pillars. According to one aspect of the present disclosure, the position of the position detection device can be easily changed.

[0010] The connecting portion according to one aspect of the present disclosure includes a fixing member fixed to the pillar, and a support member attached to the fixing member and rotatably supporting the support frame. According to one aspect of the present disclosure, the support frame can be easily rotated.

[0011] The connecting portion in one embodiment of the present disclosure includes a first connecting portion that rotatably connects one end of the support frame to one of the left and right pillars, and a second connecting portion that rotatably connects the other end of the support frame to the other of the left and right pillars, the first connecting portion having a first support hole through which the one end of the support frame is inserted and that rotatably supports the one end of the support frame, and the second connecting portion having an inner diameter larger than the inner diameter of the first support hole and having a second support hole through which the other end of the support frame is inserted and that rotatably supports the other end of the support frame. According to one aspect of the present disclosure, the support frame can be easily rotated.

[0012] According to one aspect of the present disclosure, the coupling portion is provided with a frictional force imparting mechanism that imparts frictional force to the rotation of the support frame. According to one aspect of the present disclosure, it is possible to easily adjust the position of a position detection device.

[0013] The frictional force imparting mechanism according to one aspect of the present disclosure is provided only in the first connecting portion out of the first connecting portion and the second connecting portion. According to one aspect of the present disclosure, frictional force can be applied in an appropriate manner.

[0014] In one embodiment of the present disclosure, of the first connecting portion and the second connecting portion, only the second connecting portion is provided with a restricting portion that restricts the rotation of the support frame at a predetermined position. According to one aspect of the present disclosure, it is possible to easily adjust the position of a position detection device.

[0015] In one aspect of the present disclosure, the cabin is provided with an outlet for extracting wiring connected to the position detection device from the inside of the cabin to the outside, and the outlet is positioned near the rotation axis of the support frame. According to one aspect of the present disclosure, it is possible to suppress the load on the wiring caused by changing the position of the position detection device.

[0016] According to one aspect of the present disclosure, the support frame is provided with a cover member that covers at least a portion of the wiring. According to one aspect of the present disclosure, wiring can be protected.

[0017] The support frame according to one aspect of the present disclosure is formed in an asymmetric shape. According to one aspect of the present disclosure, the degree of freedom in designing a work vehicle can be improved.

[0018] The support frame according to one aspect of the present disclosure includes a main body portion formed of a rod-shaped member, and the main body portion is bent so as to avoid contact with the muffler. According to one aspect of the present disclosure, interference between the support frame and the muffler can be avoided. [Effects of the Invention]

[0019] According to one aspect of the present disclosure, the position of the position detection device can be easily changed. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a side view showing the overall configuration of a tractor according to one embodiment of the present disclosure. [Figure 2] FIG. 2 is a perspective view showing a cabin, a position detection device, and a support mechanism of the tractor. [Figure 3] FIG. 4 is an enlarged perspective view showing the right portion of the support mechanism. [Figure 4] FIG. 4 is an enlarged perspective view showing the left portion of the support mechanism. [Figure 5] FIG. 2 is a plan view showing the position detection device and the support mechanism. [Figure 6] FIG. 2 is an exploded perspective view showing the position detection device and the support mechanism. [Figure 7] FIG. 4 is an enlarged exploded perspective view showing the right portion of the support mechanism. [Figure 8] FIG. 4 is an enlarged exploded perspective view showing the left portion of the support mechanism. [Figure 9]FIG. 4 is a left side view showing the position detection device and the support mechanism in the use position. [Figure 10] FIG. 4 is a left side view showing the position detection device and the support mechanism in the non-use position. [Figure 11] FIG. 2 is a right side view showing the beam, wiring, position detection device, and support mechanism. [Figure 12] FIG. 10 is a right side view schematically showing the beam outlet and support frame. [Figure 13] FIG. 10 is a perspective view showing a cabin, a position detection device, and a support mechanism of a tractor according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0021] In the following description, the directions indicated by arrows U, D, F, B, L, and R in the figures are defined as upward, downward, forward, backward, leftward, and rightward, respectively.

[0022] First, the overall configuration of a tractor 1 according to one embodiment of the present disclosure will be described.

[0023] The tractor 1 shown in FIG. 1 mainly comprises a machine frame 2, an engine 3, a hood 4, a transmission case 5, front wheels 6, rear wheels 7, fenders 8, a lifting device 9, a cabin 10, a seat 20, a steering wheel 21, and the like.

[0024] The machine body frame 2 is a frame-shaped member formed by appropriately combining a plurality of plate materials. The machine body frame 2 is formed in a generally rectangular shape when viewed from above. The machine body frame 2 is disposed at the front of the tractor 1 with its longitudinal direction facing the front-to-rear direction. An engine 3 is fixed to the rear of the machine body frame 2. The engine 3 is covered by a hood 4. A transmission case 5 is fixed to the rear of the engine 3. A muffler 4a that discharges exhaust gas from the engine 3 is disposed on the right side of the hood 4.

[0025] The front of the vehicle frame 2 is supported by a pair of left and right front wheels 6 via a front axle mechanism (not shown). The rear of the transmission case 5 is supported by a pair of left and right rear wheels 7 via a rear axle mechanism (not shown). The pair of left and right rear wheels 7 are generally covered from above by fenders 8.

[0026] A lifting device 9 is provided at the rear of the transmission case 5. Various types of working equipment (for example, a tiller) can be attached to the lifting device 9. The lifting device 9 can raise and lower the attached working equipment using an actuator such as a hydraulic cylinder. Power from the engine 3 can be transmitted to the lifting device 9 via a PTO shaft (not shown).

[0027] The power of the engine 3 is changed in speed by a transmission (not shown) housed in a transmission case 5, and then can be transmitted to front wheels 6 via the front axle mechanism, and can be transmitted to rear wheels 7 via the rear axle mechanism. The front wheels 6 and rear wheels 7 are driven to rotate by the power of the engine 3, allowing the tractor 1 to travel. The power of the engine 3 can also be used to drive a working device attached to the lifting device 9.

[0028] A cabin 10 is provided behind the engine 3. The cabin 10 is mounted on the vehicle body (transmission case 5, etc.). Inside the cabin 10, a living space for a driver is formed.

[0029] 2, the cabin 10 has left and right pillars (front pillars) 12 that support a roof 11 at the front. A fixing piece portion 12a for fixing a first connecting portion 400 and a second connecting portion 500, which will be described later, is provided at the middle portion in the up-down direction of each of the left and right pillars 12. The fixing piece portion 12a is formed in a generally plate shape with its thickness direction generally oriented in the front-to-rear direction.

[0030] As shown in FIG. 5, the cabin 10 has a beam 13 connecting the upper ends of the left and right pillars 12. Note that the roof 11 of the cabin 10 and other components are not shown in FIG. 5. A windshield is provided within the frame formed by the beam 13 and the left and right pillars 12. The beam 13 is formed with an outlet 13a through which wiring 110 connected to a position detection device 100 (described later) is taken out from inside the cabin 10 to the outside. The outlet 13a is formed so as to penetrate the beam 13 in the front-to-rear direction. The outlet 13a is formed on the right side of the beam 13. A plurality of outlets 13a (two in the illustrated example) are formed spaced apart in the left-to-right direction.

[0031] As shown in FIG. 1, a seat 20 for a driver to sit in is disposed approximately in the center of the cabin 10. The cabin 10 is also provided with an auxiliary step 20a for getting in and out of the seat 20. The auxiliary step 20a is provided on at least the left side of the cabin 10. The auxiliary step 20a can be provided on both sides of the cabin 10. A steering wheel 21 for adjusting the turning angle of the front wheels 6 is also disposed in the front of the cabin 10.

[0032] As shown in Fig. 2, the tractor 1 includes a position detection device 100 capable of detecting the position of the vehicle body, and a support mechanism 200 that supports the position detection device 100. Details of the position detection device 100 and the support mechanism 200 will be described below with reference to Figs. 2 to 8.

[0033] The position detection device 100 shown in FIG. 2 is a device capable of detecting the position of a vehicle body (position information including latitude and longitude) using a satellite positioning system such as a GPS. The position detection device 100 is formed in a substantially rectangular box shape. The position detection device 100 has appropriate receiving means for receiving satellite signals transmitted from satellites. The position detection device 100 is provided so as to be located outside the cabin 10. Specifically, the position detection device 100 is disposed so as to be located approximately in the center in the left-right direction at the front of the roof 11.

[0034] As shown in Fig. 5, the position detection device 100 is connected to a wiring 110 that is taken out from inside the cabin 10 via the outlet 13a. In the illustrated example, the wiring 110 is connected to the right part of the position detection device 100. A plurality of wirings 110 are provided. The wiring 110 can be used to communicatively connect the position detection device 100 to an appropriate control device that can control the travel of the tractor 1.

[0035] The tractor 1 can execute control to automatically steer the vehicle body based on the position information detected by the position detection device 100. The above control includes, for example, control to automatically steer the vehicle body so that the vehicle travels straight in parallel with a set predetermined travel reference line.

[0036] The support mechanism 200 is attached to the cabin 10 and supports the position detection device 100. The support mechanism 200 includes a support frame 300, a first connecting portion 400, and a second connecting portion 500.

[0037] 5 to 8 supports the position detection device 100 and is disposed so as to span the left and right pillars 12. The support frame 300 is disposed so as to be located in front of the roof 11. The support frame 300 is provided rotatable relative to the left and right pillars 12 around central axes (rotation axes 322, 336 described later) facing in the left-right direction via a first connecting portion 400 and a second connecting portion 500 described later.

[0038] Specifically, the support frame 300 can be rotated between a use position (see FIG. 9 ) in which the position detection device 100 is located above the roof 11 (the upper end of the roof 11) and a non-use position (see FIG. 10 ) rotated counterclockwise from the use position as viewed from the left side so that the position detection device 100 is located below the roof 11. The rotation of the support frame 300 will be described in detail later. Below, the configuration of the support frame 300 will be described based on the use position. The support frame 300 includes a main body 310, a first end 320, a second end 330, a support plate 340, and a cover 350.

[0039] The main body 310 shown in FIGS. 5 and 8 is a main structural element of the support frame 300. The main body 310 is formed by bending a rod-shaped (round bar-shaped) member that is long in the left-right direction. For example, a hollow round bar (pipe) can be used as the main body 310. As shown in FIG. 5, the main body 310 is formed so that both left-right end portions (end portions of a third portion 313, which will be described later) are positioned outward in the left-right direction from the left and right pillars 12 (portions of the pillars 12 that are roughly the same height as the support frame 300). The main body 310 includes a first portion 311, a second portion 312, and a third portion 313.

[0040] The first portion 311 is a portion of the main body 310 on the left-right central side. The first portion 311 is formed to extend in the left-right direction. As shown in FIG. 5, the first portion 311 is formed so that the left-right central portion is recessed rearward when the position detection device 100 is in the use position. More specifically, the first portion 311 is formed so that the left-right central portion is recessed diagonally rearward and downward relative to both left-right end portions (see FIG. 11). Furthermore, the first portion 311 is formed linearly except for the left-right central portion.

[0041] The second portions 312 extend laterally from both lateral ends of the first portion 311. The second portions 312 are formed to extend obliquely downward and rearward. As shown in FIG. 5, in this embodiment, of the left and right second portions 312, the second portion 312 on the muffler 4a side (right side) is bent to avoid contact with the muffler 4a. That is, in this embodiment, the right second portion 312 is formed to be bent so as to be recessed toward the side opposite the muffler 4a (diagonally left rear side in plan view). Furthermore, as shown in FIG. 11, the right second portion 312 is formed to be recessed obliquely upward and rearward in right side view. This makes it possible to avoid interference between the support frame 300 (second portion 312) and the muffler 4a.

[0042] The third portions 313 extend left and right from both left and right end portions of the second portion 312. The third portions 313 are formed to extend linearly in the left and right direction. The left and right third portions 313 are formed to be positioned approximately coaxially with each other.

[0043] The main body 310 as described above is formed in a bilaterally asymmetric shape. Specifically, the right second portion 312 of the main body 310 is bent to avoid contact with the muffler 4a, while the left second portion 312 is not bent and is formed in a shape that extends linearly. In this manner, in this embodiment, the shape of the main body 310 (second portion 312) is arbitrarily changed to avoid interference with other components. As long as the left and right third portions 313 of the main body 310 are positioned approximately coaxially with each other as in this embodiment, the shape, size, etc. of the intermediate portions (first portion 311 and second portion 312) can be arbitrarily changed. This improves the degree of freedom in designing the tractor 1.

[0044] The first end 320 shown in Figures 3 and 7 constitutes the right end of the support frame 300. The first end 320 is formed in a generally plate shape with its thickness oriented in the left-right direction. The first end 320 is formed in a generally circular shape in a side view. The first end 320 is fixed to the right end of the main body 310 (third portion 313). The first end 320 has a shaft mounting hole 321 and a rotating shaft 322.

[0045] The shaft mounting hole 321 is a portion (screw hole) to which a rotation shaft 322, which will be described later, is attached. The shaft mounting hole 321 is formed so as to penetrate the first end portion 320 in the left-right direction. The shaft mounting hole 321 is formed at the center of the first end portion 320 in a side view. The shaft mounting hole 321 is formed so as to generally coincide with the center of the third portion 313 in a side view.

[0046] The rotation shaft 322 serves as the rotation center on the right side of the support frame 300. The rotation shaft 322 is disposed with its axis oriented in the left-right direction. The rotation shaft 322 is formed by an appropriate bolt (stud bolt). The rotation shaft 322 is fitted into the shaft mounting hole 321.

[0047] The second end 330 shown in FIGS. 4 and 8 constitutes the left end of the support frame 300. The second end 330 is formed in a generally plate shape with its thickness oriented in the left-right direction. The second end 330 is formed in a generally circular shape with a protruding portion (a protrusion 334, described later) in a side view. The second end 330 is formed in a shape generally similar to that of the first end 320, except for the protruding portion. The second end 330 includes a shaft mounting hole 331, a first fixing hole 332, a second fixing hole 333, a protrusion 334, a restriction pin 335, and a rotation shaft 336.

[0048] The shaft mounting hole 331 is a portion (threaded hole) to which a rotation shaft 336, which will be described later, is attached. The configuration of the shaft mounting hole 331 is generally similar to the configuration of the shaft mounting hole 321 of the first end portion 320, and therefore detailed description thereof will be omitted.

[0049] The first fixing holes 332 are used to fix the second end portion 330 to the second connecting portion 500 (described later) when fixing the support frame 300 at the usage position. The first fixing holes 332 are formed to penetrate the second end portion 330 in the left-right direction. The second end portions 330 are formed as a pair with the shaft mounting hole 331 in between.

[0050] The second fixing hole 333 is a portion for fixing the second end portion 330 to the second connecting portion 500 (described later) when fixing the support frame 300 in the non-use position. Similar to the first fixing hole 332, the second fixing hole 333 is formed to penetrate the second end portion 330 in the left-right direction. The second end portion 330 is formed as a pair with the shaft mounting hole 331 in between. The first fixing hole 332 and the second fixing hole 333 are formed to be aligned on a circle centered on the shaft mounting hole 331.

[0051] The protrusion 334 is a portion that protrudes substantially upward (diagonally upward) from the substantially circular portion of the second end portion 330.

[0052] The restriction pin 335 is a portion that protrudes leftward from the tip of the protrusion 334. The restriction pin 335 is formed in a generally cylindrical shape with its axis oriented in the left-right direction.

[0053] The rotating shaft 336 serves as the center of rotation on the left side of the support frame 300. The rotating shaft 336 is disposed with its axis oriented in the left-right direction. The rotating shaft 336 is fitted into the shaft mounting hole 331. The rotating shaft 336 is formed to have the same outer diameter as the rotating shaft 322 on the right side.

[0054] The support plate 340 shown in FIG. 6 supports the position detection device 100. The support plate 340 is provided in the left-right center of the main body 310 (the left-right center of the first part 311). The support plate 340 is formed in a generally plate shape with its thickness oriented in the up-down direction when the position detection device 100 is in the use position. The support plate 340 is fixed to the main body 310 by, for example, welding. The support plate 340 is also fixed to the bottom surface of the position detection device 100 using fasteners such as bolts.

[0055] The cover portion 350 shown in FIGS. 3 and 7 is provided on the main body portion 310 and covers at least a portion of the wiring 110. The cover portion 350 is formed in a generally rectangular shape that is elongated in the left-right direction in a plan view. The cover portion 350 is provided on the right side of the main body portion 310. More specifically, the cover portion 350 is provided on a portion of the first portion 311 of the main body portion 310 that is to the right of the support plate 340. The cover portion 350 is also provided on the rear side of the first portion 311. The cover portion 350 includes a lower cover portion 351, a cover fixing portion 352, and an upper cover portion 353.

[0056] The lower cover part 351 is a part provided at the bottom of the main body part 310 (first part 311). When the position detection device 100 is in the use position, the lower cover part 351 is formed in a generally plate shape with its thickness direction facing up and down. More specifically, the lower cover part 351 is formed in a shape in which the rear end part of a plate-shaped member is bent upward. The lower cover part 351 is fixed to the bottom surface of the first part 311 by, for example, welding.

[0057] The cover fixing portion 352 is a portion for fixing the upper cover portion 353, which will be described later. The cover fixing portion 352 has threaded holes formed therein through which fasteners such as bolts can be inserted vertically. A plurality of cover fixing portions 352 (three in the illustrated example) are provided on the upper surface of the main body portion 310 (first portion 311) at intervals in the left-right direction. The cover fixing portions 352 are fixed to the upper surface of the first portion 311 by, for example, welding.

[0058] The upper cover part 353 is a part provided on the upper part of the main body part 310 (first part 311). The upper cover part 353 is formed in a generally plate shape with its thickness direction facing up and down when the position detection device 100 is in the use position. The upper cover part 353 is formed separately from the main body part 310. The upper cover part 353 is attached to the cover fixing part 352 using fasteners such as bolts.

[0059] 3 and 7 , the first connecting portion 400 rotatably connects the right end portion of the support frame 300 to the right pillar 12. The first connecting portion 400 is provided on the fixed piece portion 12a of the right pillar 12. The first connecting portion 400 includes a fixed member 410, a support member 420, and a frictional force imparting mechanism 430.

[0060] The fixing member 410 is fixed to the fixing piece portion 12a of the pillar 12, and a support member 420 (described later) is attached to the fixing member 410. The fixing member 410 is formed by bending a plate-shaped member into a substantially L-shape. The fixing member 410 includes a first fixing piece portion 411 and a second fixing piece portion 412.

[0061] The first fixing piece 411 is a portion that is fixed to the fixing piece 12a. The first fixing piece 411 is formed so that its thickness direction is oriented roughly in the front-to-rear direction. The first fixing piece 411 is fixed to the fixing piece 12a using fasteners such as bolts, with its rear surface abutting against the front surface of the fixing piece 12a.

[0062] The second fixing piece 412 is a portion to which the support member 420 is attached. The second fixing piece 412 is formed to extend substantially rearward from the upper end of the first fixing piece 411. The second fixing piece 412 is formed so that its thickness direction is oriented substantially in the vertical direction.

[0063] The support member 420 is attached to the fixed member 410 and rotatably supports the right end portion of the support frame 300. The support member 420 is formed by bending a plate-shaped member into a substantially L-shape. The support member 420 includes a first support piece 421 and a second support piece 422.

[0064] The first support piece 421 is a portion that is fixed to the second fixed piece 412 of the fixing member 410. The first support piece 421 is formed so that its thickness direction is oriented generally in the vertical direction. The first support piece 421 is fixed to the second fixed piece 412 using fasteners such as bolts, with its lower surface abutting against the upper surface of the second fixed piece 412.

[0065] The second support piece 422 is a portion that rotatably supports the right end (first end 320) of the support frame 300. The second support piece 422 is formed to extend upward from the right end of the first support piece 421. The second support piece 422 is formed so that its thickness direction faces the left-right direction. The second support piece 422 is formed in a substantially rectangular shape in a side view. The second support piece 422 has an upper end, the central part in the left-right direction, formed in an arc shape that protrudes upward. The second support piece 422 has a support hole 422a.

[0066] The support hole 422a allows the rotation shaft 322 of the support frame 300 to be inserted therethrough and rotatably supports the right end of the support frame 300. The support hole 422a is formed to penetrate the second support piece 422 in the left-right direction. The inner diameter of the support hole 422a is larger than the outer diameter of the rotation shaft 322. The support hole 422a is formed in approximately the center of the second support piece 422 in a side view.

[0067] The frictional force applying mechanism 430 applies a frictional force to the rotation of the support frame 300. The frictional force applying mechanism 430 is provided on the right surface side of the second support piece 422. The frictional force applying mechanism 430 includes a friction plate 431, a washer 432, a spring portion 433, a spring receiving portion 434, and a case 435.

[0068] The friction plate 431 is for generating a friction force between itself and the right surface of the second support piece 422. The friction plate 431 is formed in a substantially annular shape. The friction plate 431 is fitted onto the outside of the rotation shaft 322.

[0069] The washer 432 transmits the biasing force of a spring portion 433 (described later) to the friction plate 431. The washer 432 is formed in a substantially circular ring shape. The washer 432 is fitted onto the rotary shaft 322 and abuts against the right surface of the friction plate 431.

[0070] The spring portion 433 biases the washer 432 and the friction plate 431 to the left. The spring portion 433 is formed of a compression coil spring. The spring portion 433 is fitted onto the rotating shaft 322 and abuts against the left surface of the washer 432.

[0071] The spring receiving portion 434 is for receiving the spring portion 433. The spring receiving portion 434 is formed in a substantially circular ring shape. The spring receiving portion 434 is fitted onto the rotating shaft 322 and abuts against the right surface of the spring portion 433. The spring receiving portion 434 is held on the rotating shaft 322 by a nut 322a that is fastened to the rotating shaft 322. By appropriately changing the fastening position of the nut 322a, it is possible to adjust the frictional force applied when the support frame 300 rotates.

[0072] The case 435 covers the other members (friction plate 431, washer 432, spring portion 433, spring receiving portion 434) that constitute the frictional force applying mechanism 430, as well as the rotary shaft 322. The case 435 is formed in a substantially box shape that opens to the left.

[0073] 4 and 8 , the second connecting portion 500 rotatably connects the left end portion of the support frame 300 to the left pillar 12. The second connecting portion 500 is provided on the fixing piece portion 12a of the left pillar 12. The second connecting portion 500 includes a fixing member 510 and a supporting member 520.

[0074] The fixing member 510 is fixed to the fixing piece portion 12a of the pillar 12, and has a support member 520, which will be described later, attached to it. The fixing member 510 includes a first fixing piece portion 511 and a second fixing piece portion 512. The fixing member 510 (first fixing piece portion 511 and second fixing piece portion 512) is generally similar to the fixing member 410 (first fixing piece portion 411 and second fixing piece portion 412) except for the fact that the fixing member 510 (first fixing piece portion 511 and second fixing piece portion 512) is formed in a shape that is symmetrical in the left-right direction, and therefore a detailed description thereof will be omitted.

[0075] The support member 520 is attached to the fixed member 510 and rotatably supports the left end of the support frame 300. The support member 520 is formed by bending a plate-shaped member into a substantially L-shape. The support member 520 includes a first support piece 521 and a second support piece 522.

[0076] The first support piece 521 is a portion that is fixed to the second fixed piece 512 of the fixing member 510. The first support piece 521 is formed so that its thickness direction is oriented generally in the vertical direction. The first support piece 521 is fixed to the second fixed piece 512 using fasteners such as bolts, with its lower surface abutting against the upper surface of the second fixed piece 512.

[0077] The second support piece 522 is a portion that rotatably supports the left end (second end 330) of the support frame 300. The second support piece 522 is formed to extend upward from the left end of the first support piece 521. The second support piece 522 is formed so that its thickness direction is oriented in the left-right direction. The second support piece 522 is formed in a substantially rectangular shape in side view. The second support piece 522 has an upper end, the left-right central portion of which is formed in an arc shape centered on the support hole 522a, and thereby protrudes upward. The second support piece 522 is equipped with the support hole 522a, the fixing hole 522b, the first restricting portion 522c, and the second restricting portion 522d.

[0078] The support hole 522a allows the rotation shaft 336 of the support frame 300 to be inserted therethrough and rotatably supports the left end of the support frame 300. The support hole 522a is formed to penetrate the second support piece 522 in the left-right direction. The support hole 522a is formed in approximately the center of the second support piece 522 in a side view. The inner diameter of the support hole 522a is larger than the inner diameter of the support hole 422a of the first connecting part 400. As a result, the gap between the support hole 522a and the rotation shaft 336 inserted through the support hole 522a is larger than the gap between the support hole 422a and the rotation shaft 322 inserted through the support hole 422a.

[0079] The fixing holes 522b are used to fix the support frame 300 (second end 330) in the use position or the non-use position. The fixing holes 522b are formed in a pair so as to overlap with the pair of first fixing holes 332 of the support frame 300 (second end 330) in the use position and with the pair of second fixing holes 333 of the support frame 300 (second end 330) in the non-use position in a side view (see FIGS. 9 and 10 ). The pair of fixing holes 522b are formed in an elongated hole shape extending along the circumference of a circle whose center is the rotation center of the support frame 300 (the axis of the rotation shaft 336). The support frame 300 in the use position or the non-use position and the support member 520 are fixed by fixing bolts and nuts inserted into the fixing holes 522b and the first fixing holes 332 or the second fixing holes 333.

[0080] The first restricting portion 522c restricts the rotation of the support frame 300 at the use position. The first restricting portion 522c is formed on the upper surface of the rear portion (the rear portion of the arc-shaped portion) of the second support piece 522. When the restricting pin 335 of the support frame 300 abuts against the first restricting portion 522c, further rotation of the support frame 300 at the use position in the clockwise direction as viewed from the left side (see FIG. 9).

[0081] The second restriction portion 522d restricts the rotation of the support frame 300 in the non-use position. The second restriction portion 522d is formed on the upper surface of the front portion (the rear portion of the arc-shaped portion) of the second support piece 522. When the restriction pin 335 of the support frame 300 abuts against the second restriction portion 522d, further rotation of the support frame 300 in the non-use position in the counterclockwise direction as viewed from the left side (see FIG. 10).

[0082] Next, an operation of rotating the support mechanism 200 (support frame 300) to change the position of the position detector 100 between the use position and the non-use position will be described with reference to FIGS.

[0083] First, the operation of changing the position detection device 100 from the use position to the non-use position will be described.

[0084] 9 shows the position detection device 100 in the use position. In this state, the second end 330 of the support frame 300 in the use position is fixed to the second connecting portion 500 by a fixing bolt and nut. Note that the bolt and nut are not shown in FIGS. 9 and 10.

[0085] When the position detection device 100 is in the use position, the upper end of the position detection device 100 fixed to the support frame 300 is located above the upper end (highest part) of the roof 11 of the cabin 10 (see FIG. 1). When in the use position, the support mechanism 200 can support the position detection device 100 in a position (posture) that allows the position of the vehicle body to be suitably detected.

[0086] When moving the position detection device 100 to the non-use position, the worker first removes the bolts and nuts that secure the second end 330 of the support frame 300 to the second connecting part 500. This allows the support frame 300 to rotate to the non-use position.

[0087] Next, the worker stands on the left side of the cabin 10 (the side where the restricting pin 335 and the like are provided) and grasps the left portion (e.g., second portion 312) of the support frame 300. Because the support frame 300 extends leftward beyond the pillar 12, it is easy for the worker to grasp the support frame 300 from the side (left side) of the cabin 10.

[0088] Next, the worker rotates the gripped support frame 300 to the non-use position. At this time, a frictional force is applied to the support frame 300 by the frictional force applying mechanism 430. This makes it possible to prevent the support frame 300 from rotating due to its own weight (unintended rotation). As the support frame 300 rotates, the restriction pin 335 moves along the arc-shaped portion of the second support piece 522.

[0089] Furthermore, as the support frame 300 rotates, the first end 320 and the second end 330 slide relative to the second support piece 422 and the second support piece 522, respectively. In this embodiment, the first end 320 and the second end 330 are formed in a generally circular shape in a side view. Therefore, unlike when each end is formed in an irregular shape (other than a circle), the sliding surfaces of the second support piece 422 and the second support piece 522 are always covered by the first end 320 and the second end 330 (regardless of the rotational position of the support frame 300). As a result, even if the paint of the second support piece 422 and the second support piece 522 peels off as the first end 320 and the second end 330 slide, the peeled paint portion can be made less noticeable.

[0090] As shown in Figure 10, when the support frame 300 is rotated to the non-use position, the restricting pin 335 of the support frame 300 abuts against the second restricting portion 522d of the support member 420, thereby restricting further rotation of the support frame 300 in the non-use position in the counterclockwise direction when viewed from the left side.

[0091] In this embodiment, operating the support frame 300 from the left side can improve the operability of rotating the support frame 300. That is, since the restricting pin 335, the first restricting portion 522c, and the second restricting portion 522d are provided on the left side of the support frame 300, when the support frame 300 is operated from the left side, it is easy to visually confirm whether the restricting pin 335 abuts against the first restricting portion 522c and the second restricting portion 522d.

[0092] Next, the worker fixes the second end 330 of the support frame 300 in the non-use position to the second connecting part 500 using a bolt and a nut, thereby completing the change of the position of the position detection device 100 to the non-use position.

[0093] 10 shows the position detection device 100 in the non-use position. When in the non-use position, the upper end of the position detection device 100 fixed to the support frame 300 is located lower than the upper end of the roof 11 of the cabin 10. When in the non-use position, the support mechanism 200 can support the position detection device 100 so as to make the tractor 1 more compact in the vertical direction. This makes it easier to store and transport the tractor 1 in a garage or the like.

[0094] Next, the operation of changing the position detection device 100 from the non-use position to the use position will be described.

[0095] The worker first removes the bolts and nuts that secure the second end 330 of the support frame 300 to the second connecting portion 500. This allows the support frame 300 to rotate to the use position.

[0096] Next, the operator grips the main body 310 (e.g., the second portion 312) of the support frame 300 and rotates the support frame 300 to the use position. At this time, the frictional force is applied to the support frame 300 by the frictional force applying mechanism 430.

[0097] As shown in Figure 9, when the support frame 300 is rotated to the use position, the restricting pin 335 of the support frame 300 abuts against the first restricting portion 522c of the support member 420, thereby restricting further rotation of the support frame 300 in the use position in the clockwise direction when viewed from the left side.

[0098] Next, the worker fixes the second end 330 of the support frame 300 in the use position to the second connecting part 500 using bolts and nuts, thereby completing the change of the position detection device 100 to the use position.

[0099] In this embodiment, only the left side of the support frame 300 (the second end 330 and the second connecting portion 500) is fixed with bolts and nuts, so a series of operations for rotating the support frame 300 can be performed only on the left side. This eliminates the need for the worker to move to both the left and right sides of the support frame 300 to perform fixing, reducing the burden on the worker. It also reduces the chance of forgetting to fix one of the left and right sides.

[0100] Furthermore, in this embodiment, a fixing hole for the use position (first fixing hole 332) and a fixing hole for the non-use position (second fixing hole 333) are formed in the second end portion 330, and a fixing hole (fixing hole 522b) that is common to both the use position and the non-use position is formed in the second support piece 522. This makes the fixing positions of the bolts and nuts common to both the use position and the non-use position, unlike when fixing holes for the use position and the non-use position are formed on the second support piece 522 side. This improves the workability of fixing the bolts and nuts.

[0101] In addition, the relationship between the wiring 110 of the position detection device 100, the outlet 13a of the cabin 10, and the support frame 300 will be described below with reference to FIGS.

[0102] The wiring 110 taken out to the outside of the cabin 10 through the outlet 13a of the beam 13 is arranged along the main body 310 (first portion 311) of the support frame 300 and connected to the right side of the position detection device 100, as shown in Fig. 5. The wiring 110 can be fixed to the main body 310 using an appropriate cable tie or the like.

[0103] A space penetrating in the left-right direction is formed in the cover part 350 of the support frame 300 by the lower cover part 351 and the upper cover part 353. The cover part 350 can protect the wiring 110 arranged along the main body part 310 (first part 311) by covering the wiring 110 from above or by inserting the wiring 110 into the space.

[0104] Also, as shown in Figure 11, the removal opening 13a is positioned near the pivot axes 322, 336 of the support frame 300. Specifically, in a side view, the removal opening 13a and the pivot axes 322, 336 are both positioned so that at least a portion of them overlaps with the support member 420 (second support piece portion 422) of the second connecting portion 500.

[0105] 12 also shows an imaginary line L1 connecting the axis P1 of the rotating shafts 322, 336 and the center P2 of the first portion 311 (the center of the first portion 311 in the left-right direction) of the support frame 300 in the use position in a side view. Also shown is an imaginary line L2 connecting the axis P1 and the center P3 of the first portion 311 of the support frame 300 in the non-use position in a side view. In this embodiment, the removal opening 13a is disposed so as to be located within the region between the imaginary lines L1 and L2 behind the axis P1 in a side view (right side view).

[0106] This makes it possible to prevent a load from being applied to the wiring 110 when the position of the position detection device 100 is changed. That is, by setting the outlet 13a of the wiring 110 near the rotation axes 322 and 336 of the support frame 300, it is possible to prevent excessive tension from being applied to the wiring 110 when the support frame 300 is rotated.

[0107] As described above, the tractor 1 (work vehicle) according to this embodiment has the following features: a position detection device 100 capable of detecting the position of a vehicle body; a support frame 300 that supports the position detection device 100 and is disposed across the left and right pillars 12 of the cabin 10; connecting portions (first connecting portion 400, second connecting portion 500) that rotatably connect the support frame 300 to each of the left and right pillars 12; It is equipped with the following.

[0108] This configuration makes it easy to change the position of the position detection device 100. That is, by arranging the support frame 300 so as to span the left and right pillars 12 of the cabin 10, it becomes easy to access the support frame 300 from the side of the cabin 10, and the operation of rotating the support frame 300 (changing the position of the position detection device 100) becomes easy.

[0109] The support frame 300 is Both ends are positioned outside the left and right pillars 12.

[0110] This configuration makes it easy to change the position of the position detection device 100. That is, by arranging the support frame 300 so that both ends thereof are positioned outside the left and right pillars 12, the operation of rotating the support frame 300 becomes easier.

[0111] Moreover, the connecting portion is Fixing members 410, 510 fixed to the pillar 12; support members 420, 520 attached to the fixed members 410, 510 and rotatably supporting the support frame 300; It is equipped with the following.

[0112] This configuration makes it easier to rotate the support frame 300. That is, by dividing the connecting portions (first connecting portion 400, second connecting portion 500) into fixed members 410, 510 and support members 420, 520, it is possible to finely adjust the attachment positions of the support members 420, 520 relative to the fixed members 410, 510. By finely adjusting the attachment positions of the support members 420, 520 in accordance with the misalignment of the axes of both ends of the support frame 300 across the left and right sides of the cabin 10, it is possible to make the support frame 300 easier to rotate.

[0113] Moreover, the connecting portion is a first connecting portion 400 that rotatably connects one end of the support frame 300 to one of the left and right pillars 12; a second connecting portion 500 that rotatably connects the other end of the support frame 300 to the other of the left and right pillars 12; Including, The first connecting portion 400 is a first support hole (support hole 422a) through which one end of the support frame 300 is inserted and which rotatably supports the one end of the support frame 300; The second connecting portion 500 is It is provided with a second support hole (support hole 522a) which has an inner diameter larger than the inner diameter of the first support hole (support hole 422a), through which the other end of the support frame 300 is inserted and which rotatably supports the other end of the support frame 300.

[0114] This configuration makes it easier to rotate the support frame 300. That is, by forming the inner diameter of the second support hole (support hole 522a) larger than the inner diameter of the first support hole (support hole 422a), misalignment of the axes of both ends of the support frame 300 across the left and right sides of the cabin 10 is permitted, making it easier to rotate the support frame 300.

[0115] The connecting portions (first connecting portion 400, second connecting portion 500) are provided with frictional force applying mechanisms 430 for applying frictional force to the rotation of the support frame 300.

[0116] This configuration makes it easier to adjust the position of the position detection device 100. That is, by applying a frictional force to the rotation of the support frame 300, it is possible to suppress rotation of the support frame 300 due to its own weight (unintended rotation).

[0117] The frictional force applying mechanism 430 is Of the first connecting portion 400 and the second connecting portion 500, the second connecting portion 500 is provided with the second connecting portion 400 only.

[0118] This configuration allows for the application of frictional force in an appropriate manner. That is, of the first connecting portion 400 and the second connecting portion 500, the frictional force application mechanism 430 is provided in the first connecting portion 400, which has a first support hole (support hole 422a) with a relatively small inner diameter. As a result, on the side where the frictional force application mechanism 430 is provided, the support frame 300 can be rotated with precision by the first support hole (support hole 422a) with a relatively small inner diameter. This prevents the axis from wobbling on the side where the frictional force application mechanism 430 is provided, allowing for the application of frictional force in an appropriate manner.

[0119] Furthermore, of the first connecting portion 400 and the second connecting portion 500, only the second connecting portion 500 is provided with a regulating portion (first regulating portion 522c, second regulating portion 522d) that regulates the rotation of the support frame 300 at a predetermined position.

[0120] This configuration makes it easier to adjust the position of the position detection device 100. That is, by restricting the rotation of the support frame 300 at a predetermined position, it becomes easier to adjust the position detection device 100 to a predetermined position. Furthermore, unlike when restricting portions (first restricting portion 522c, second restricting portion 522d) are provided on both the left and right sides, it is possible to prevent the positions of the left and right restricting portions from shifting from each other, thereby preventing the restricted position of the support frame 300 from shifting.

[0121] In this embodiment, restricting portions (first restricting portion 522c, second restricting portion 522d) are provided on the left side, which is the side where an operator performs operation. This makes it easy for an operator to visually confirm whether the restricting pin 335 abuts against the first restricting portion 522c and the second restricting portion 522d when operating the support frame 300.

[0122] In addition, Tractor 1 (work vehicle) an outlet 13a provided in the cabin 10 for extracting a wiring 110 connected to the position detection device 100 from the inside of the cabin 10 to the outside; The outlet 13a is It is disposed near the rotation axes 322 and 336 of the support frame 300 .

[0123] This configuration can prevent a load from being applied to the wiring 110 when the position of the position detection device 100 is changed. That is, by setting the outlet 13a of the wiring 110 near the rotation axes 322 and 336 of the support frame 300, it is possible to prevent excessive tension from being applied to the wiring 110 when the support frame 300 is rotated.

[0124] The support frame 300 also includes a cover member (cover portion 350) that is provided on the support frame 300 and covers at least a part of the wiring 110.

[0125] By configuring in this way, the wiring 110 can be protected.

[0126] The support frame 300 is It is formed in an asymmetrical shape.

[0127] This configuration improves the degree of freedom in designing the work vehicle (tractor 1). That is, the shape of the support frame 300 can be changed as desired to avoid interference with other members.

[0128] The support frame 300 is The device includes a main body 310 formed of a rod-shaped member, The main body portion 310 is It is bent so as to avoid contact with the muffler 4a.

[0129] With this configuration, interference between the support frame 300 and the muffler 4a can be avoided.

[0130] The tractor 1 according to this embodiment is one embodiment of a work vehicle according to the present invention. The support hole 422a according to this embodiment is one form of the first support hole according to the present invention. The support hole 522a according to this embodiment is one form of the second support hole according to the present invention. The first restricting portion 522c and the second restricting portion 522d according to this embodiment are one form of the restricting portion according to the present invention. The cover portion 350 according to this embodiment is one form of the cover member according to the present invention.

[0131] Although one embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

[0132] For example, in the above embodiment, an example was shown in which both ends of the support frame 300 were positioned outward from the left and right pillars 12, but the present invention is not limited to this. For example, both ends of the support frame 300 may be positioned inward from the left and right pillars 12 (for example, near the left and right pillars 12).

[0133] In the above embodiment, the first connecting portion 400 and the second connecting portion 500 are configured by the fixing members 410, 510 and the support members 420, 520, which are separate members, but the present invention is not limited to this. For example, the fixing members 410, 510 and the support members 420, 520 may be integrally formed.

[0134] In the above embodiment, the inner diameter of the support hole 522a of the second connecting portion 500 is larger than the inner diameter of the support hole 422a of the first connecting portion 400, but this is not limiting. For example, the inner diameters of the support hole 422a and the support hole 522a may be the same. Furthermore, the inner diameter of the support hole 422a of the first connecting portion 400 may be larger than the inner diameter of the support hole 522a of the second connecting portion 500.

[0135] In the above embodiment, the frictional force imparting mechanism 430 is provided only on the right-side first connecting portion 400 of the support mechanism 200, but this is not a limitation. For example, the frictional force imparting mechanism 430 may be provided only on the left-side second connecting portion 500. In this way, if the frictional force imparting mechanism 430 is provided only on the side (left side) where the operator performs the rotation operation, the right side of the support frame 300 (where the frictional force imparting mechanism 430 is not provided) can easily follow the rotation operation of the left side of the support frame 300. This makes it possible to prevent differences in the rotation of both ends of the support frame 300. Furthermore, the frictional force imparting mechanism 430 may not be provided on either the first connecting portion 400 or the second connecting portion 500.

[0136] In the above embodiment, the support mechanism 200 has the first stopper 522c and the second stopper 522d provided only on the left second connecting portion 500. However, the present invention is not limited to this. For example, the first stopper 522c and the second stopper 522d may be provided only on the first connecting portion 400, or the first stopper 522c and the second stopper 522d may be provided on both the first connecting portion 400 and the second connecting portion 500. In this case, the first end portion 320 also has the protrusion 334 and the stopper pin 335. Alternatively, the first stopper 522c and the second stopper 522d may not be provided on either the first connecting portion 400 or the second connecting portion 500. In this case, the second end portion 330 does not have the protrusion 334 and the stopper pin 335.

[0137] In the above embodiment, the outlet 13a for the wiring 110 is disposed near the rotation axes 322 and 336 of the support frame 300, but the present invention is not limited to this. The outlet 13a for the wiring 110 can be disposed at any position in the cabin 10.

[0138] In the above embodiment, the main body 310 of the support frame 300 is bent to avoid contact with the muffler 4a, but the present invention is not limited to this. For example, the main body 310 may not be bent as described above. In this case, the support frame 300 (main body 310) may be formed in a bilaterally symmetrical shape.

[0139] In the above embodiment, the second end portion 330 is formed with a fixing hole for the use position (first fixing hole 332) and a fixing hole for the non-use position (second fixing hole 333), and the second support piece 522 is formed with a fixing hole (fixing hole 522b) that is common to both the use position and the non-use position, but the present invention is not limited to this. For example, the second end portion 330 may be formed with a common fixing hole, and the second support piece 522 may be formed with a fixing hole for the use position and a fixing hole for the non-use position, respectively.

[0140] In the above embodiment, only the left side of the support frame 300 (the second end 330 and the second connecting portion 500) is fixed with bolts and nuts, but the present invention is not limited to this. For example, both sides of the support frame 300 (the first end 320 and the second end 330) may be fixed to the first connecting portion 400 and the second connecting portion 500 with bolts and nuts. Alternatively, only the right side of the support frame 300 (the first end 320 and the first connecting portion 400) may be fixed with bolts and nuts.

[0141] In the above embodiment, the first end 320 and the second end 330 of the support frame 300 are formed in a substantially circular shape, but are not limited to this. For example, the first end 320 and the second end 330 may be formed in an irregular shape (e.g., a polygonal shape).

[0142] 13 shows another embodiment (modified example) of the present disclosure. In this modified example, unlike the present embodiment (see FIG. 2, etc.), the frictional force applying mechanism 430 is provided only on the left second connecting portion 500. Also, in this modified example, unlike the present embodiment (see FIG. 2, etc.), the first end 320 and the second end 330 of the support frame 300 are formed in a substantially polygonal shape (such as a substantially triangular shape). Also, in this modified example, unlike the present embodiment (see FIG. 2, etc.), both sides of the support frame 300 (the first end 320 and the second end 330) are configured to be fixed to the first connecting portion 400 and the second connecting portion 500 with bolts and nuts.

[0143] In addition, in the above embodiment, the tractor 1 is used as an example of a work vehicle, but the work vehicle is not limited to this. For example, the work vehicle may be other agricultural vehicles, construction vehicles, industrial vehicles, etc. [Explanation of symbols]

[0144] 1 Tractor 100 Position detection device 300 Support Frame 400 First connection part 500 Second connection part

Claims

1. a position detection device capable of detecting the position of a vehicle body; a support frame that supports the position detection device and is arranged across left and right pillars that support a cabin roof; a connecting portion that rotatably connects the support frame to each of the left and right pillars; A work vehicle equipped with:

2. The support frame includes: The position detection device is rotatable between a use position where the position detection device is located above the roof and a non-use position where the position detection device is located below the roof. The work vehicle according to claim 1 .

3. The connecting portion is a first connecting portion that rotatably connects one end of the support frame to one of the left and right pillars; a second connecting portion that rotatably connects the other end of the support frame to the other of the left and right pillars; Including, The support frame includes: The vehicle is provided so as to be rotatable relative to the left and right pillars around a central axis facing in the left-right direction via the first connecting portion and the second connecting portion. The work vehicle according to claim 1 .

4. The support frame includes: The two ends are positioned outside the left and right pillars. The work vehicle according to claim 1 .

5. The connecting portion is a fixing member fixed to the pillar; a support member attached to the fixed member and rotatably supporting the support frame; Equipped with The work vehicle according to claim 4.

6. The connecting portion is a first connecting portion that rotatably connects one end of the support frame to one of the left and right pillars; a second connecting portion that rotatably connects the other end of the support frame to the other of the left and right pillars; Including, The first connecting portion is a first support hole through which one end of the support frame is inserted and which rotatably supports the one end of the support frame; The second connecting portion is a second support hole having an inner diameter larger than an inner diameter of the first support hole, through which the other end of the support frame is inserted and which rotatably supports the other end of the support frame; The work vehicle according to claim 5.

7. a friction force applying mechanism provided at the connecting portion and applying a friction force to the rotation of the support frame; The work vehicle according to claim 6.

8. The friction force imparting mechanism includes: Of the first connecting portion and the second connecting portion, the second connecting portion is provided only on the first connecting portion, The work vehicle according to claim 7.

9. a restricting portion provided only on the second connecting portion of the first connecting portion and the second connecting portion, the restricting portion restricting the rotation of the support frame at a predetermined position; The work vehicle according to claim 8.

10. a take-out port provided in the cabin for taking out wiring connected to the position detection device from inside the cabin to outside, The outlet is Located near the pivot axis of the support frame, A work vehicle according to any one of claims 1 to 9.

11. a cover member provided on the support frame and covering at least a portion of the wiring; The work vehicle according to claim 10.

12. The support frame includes: Formed in an asymmetrical shape, The work vehicle according to claim 1 .

13. The support frame includes: The device has a main body formed by a rod-shaped member, The main body portion is It is bent to avoid contact with the muffler. The work vehicle according to claim 12.

Images