Work vehicle

Abstract

To provide a work vehicle capable of adjusting the vertical angle of a display screen part of a display device to an angle that is easy for an operator to view.SOLUTION: A work vehicle 1 has a display device 23, a horizontal pipe 29 that is positioned in front of an operator seat 16 and through which a wire harness 41 connected to the display device 23 can be inserted, a fixture 43 that has a clamp mechanism 54 that secures the display device 23 to the horizontal pipe 29, and a waterproof grommet 62 that fits into a wire harness insertion port 61 of the horizontal pipe 29. By releasing the clamp mechanism 54 from fastening the horizontal pipe 29, it becomes possible to rotate the display device 23 around the horizontal pipe 29 as an axis of rotation. The clamp mechanism 54 makes it possible to fix the display device 23 at a desired angle θ.SELECTED DRAWING: Figure 5

Description

[Technical Field]

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

[0002] Widely known examples of work vehicles include crawler-type skid steer loaders and hydraulic excavators used for excavating the ground and moving excavated soil and sand. These work vehicles are equipped with a display device that displays warnings for abnormalities such as the remaining battery level, oil pressure, and oil temperature, as well as work modes such as travel speed. It is preferable that such a display device be located in a position that is easily visible to the driver while working.

[0003] Some work vehicles are equipped with a control box located in front of the operator seat at a height that allows the driver to easily operate the controls. This control box is equipped with control devices for operating the work vehicle. The control box houses a display device equipped with various display instruments and mode operation switches. This display device is located in the driver's line of sight ahead while working (see, for example, Patent Document 1).

[0004] Also disclosed is a display device for a work vehicle that is supported by a flexible arm that stands on a device main body that has a built-in controller (see, for example, Patent Document 2). This display device is rotatably connected to the upper end of the arm by a ball joint. The arm is formed by a flexible tube made of a strip-shaped metal plate that is spirally wound, and a wire harness is inserted inside. Because the display device is supported by the ball joint and the flexible tube, the angle and position of the display screen of the display device can be freely adjusted.

[0005] Also, an example has been disclosed in which a support for a display device in a work vehicle is configured with a receiving part attached to the back of the display screen part, a pillar part inserted into the receiving part, and a locking part that fastens the receiving part and the pillar part (see, for example, Patent Document 3). This display device is configured so that the display screen part can be switched between a portrait orientation and a landscape orientation by loosening the locking part. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-55759 [Patent Document 2] Japanese Patent Application Laid-Open No. 2010-105568 [Patent Document 3] Patent Publication No. 2021-30804 Summary of the Invention [Problem to be solved by the invention]

[0007] The display device described in Patent Document 1 is housed in the same box as the control box as part of the driving control device. The driving control device is attached to the vehicle body by a control box bracket via an arm. The arm is rotatably fixed by an arm support shaft extending in the fore-and-aft direction of the work vehicle. This allows the driving control device (display device) to rotate around the arm support shaft as a rotation axis. However, there is a problem in that the display screen of the display device cannot be adjusted to a fore-and-aft angle that is easy for the operator to view. In addition, because the wire harness is exposed between the arm and the control box bracket, it is possible that the operator may get caught on the wire harness. Furthermore, the wire harness is inserted into the control box bracket, but in work vehicles with canopies, there is a risk of rainwater entering through the wire harness insertion opening.

[0008] The display device described in Patent Document 2 is configured so that the display screen of the display device can be easily adjusted to any angle and position. However, the ball joint and flexible tube do not have fixing devices to fix the adjusted angle and position. Therefore, the angle and position may be displaced due to vibrations or impacts during driving or work. Furthermore, there is a problem that, when adjusting the angle and position, the flexible tube, which is made of a strip-shaped metal plate and spirally wound, may rub against each other, causing paint to peel off. Furthermore, because the arm is made of a flexible tube made of a strip-shaped metal plate and spirally wound, there is a risk that rainwater may enter through the spiral portion when the flexible tube is bent to adjust the angle, etc., on a work vehicle equipped with a canopy.

[0009] The display device described in Patent Document 3 is configured so that the display screen can be switched between portrait and landscape orientations. However, the display device cannot arbitrarily change the front-to-back angle of the display screen to match the operator's line of sight. Furthermore, when switching the display screen between portrait and landscape orientations, the support and column may rub against each other, causing paint to peel off.

[0010] The present invention has been made to solve at least one of these problems, and aims to provide a work vehicle that allows the operator to adjust the vertical angle of the display screen of the display device to an angle that is easy to view, prevents the paint on the horizontal pipe that supports the display device from peeling, and prevents rainwater from entering through the horizontal pipe through which the wire harness is inserted. [Means for solving the problem]

[0011] [1] The work vehicle of the present invention has a display device, a horizontal pipe section, a fixing device, and a waterproof grommet. The horizontal pipe section allows a wire harness connected to the display device to be inserted therethrough and is located in front of the operator seat. The fixing device has a clamp mechanism section that fixes the display device to the horizontal pipe section. The waterproof grommet is fitted into a wire harness insertion port of the horizontal pipe section. The clamp mechanism section is configured so that by loosening the tightening of the horizontal pipe section, the display device can be rotated around the horizontal pipe section as a rotation axis, and by tightening the horizontal pipe section, the display device can be fixed.

[0012] [2] In the work vehicle of the present invention, it is preferable that the clamp mechanism further includes a handle portion having a horizontal pipe insertion hole through which the horizontal pipe portion can be inserted, a slit portion extending from the horizontal pipe insertion hole to the outer shell, a bolt disposed on either side of the slit portion in the cross-sectional direction, and a female thread for engaging with the bolt. The handle portion is preferably configured such that, by rotating in one direction, the spacing between the slit portions can be widened, allowing the display device to be rotated around the horizontal pipe portion as a rotation axis. It is preferable that, by rotating in the other direction, the spacing can be narrowed, allowing the display device to be fixed to the horizontal pipe portion.

[0013] [3] The work vehicle of the present invention preferably further includes a rotation angle restriction mechanism that restricts the rotation angle of the display device. The rotation angle restriction mechanism includes a display bracket fixed to the display device and an "angle restriction shaft fixing portion" fixed to the horizontal pipe portion and extending along the display bracket. The display bracket has an elongated hole that is long in the rotation direction of the display device. The angle restriction shaft is preferably inserted into the elongated hole, and the display device is configured to be rotatable within a range in which the elongated hole abuts against the angle restriction shaft.

[0014] [4] In the work vehicle of the present invention, it is preferable that a slide assist member be interposed between the horizontal pipe section and the horizontal pipe section insertion hole formed in the fixture.

[0015] [5] In the work vehicle of the present invention, it is preferable that the slide assist member is a heat-shrinkable tube.

[0016] [6] In the work vehicle of the present invention, it is preferable that the horizontal pipe portion forms part of a handrail arranged in front of the operator seat, and that the handrail is fixed to the side of a front cover fixing part that fixes a front cover arranged in front of the operator seat. [Effects of the Invention]

[0017] The display device is disposed in front of the operator seat and is fixed to a horizontal pipe section extending in the width direction of the work vehicle by a fixture. A wire harness connected to the display device can be inserted through the horizontal pipe section. The fixture has a clamp mechanism. By loosening the fastening device, the display device can be rotated around the horizontal pipe section as a rotation axis. Furthermore, by tightening the fastening device, the display device can be fixed to the horizontal pipe section at a desired angle. Therefore, the display device (display screen section) can be easily adjusted to an angle that is easy for the operator to view. Furthermore, because the display device can be fixed to the horizontal pipe section by the fixture, the mounting angle of the display device can be prevented from shifting due to vibrations or shocks while the work vehicle is traveling or operating.

[0018] In addition, most of the wire harness is inserted inside the horizontal pipe, which prevents the operator from getting caught on the wire harness and also contributes to a neater appearance.

[0019] A waterproof grommet is fitted into the wire harness insertion opening of the horizontal pipe. The provision of the waterproof grommet makes it possible to prevent rainwater, dust, and the like from entering the inside of the horizontal pipe through the wire harness insertion opening. It also makes it possible to prevent short circuits in the wire harness and breakdowns of electrical appliances caused by rainwater running down the wire harness and entering the inside of the front cover. Furthermore, because the wire harness is inserted through the waterproof grommet, it is possible to prevent the wire harness from coming into direct contact with the wire harness insertion opening of the horizontal pipe, thereby preventing the sheath of the wire harness from being rubbed and damaged. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a perspective view of an example of a work vehicle 1 as seen from the rear side. [Figure 2] FIG. 2 is a perspective view of the vehicle body 10 as seen from the side. [Figure 3] FIG. 1 is a perspective view of a vehicle body 10 as seen obliquely from the front. [Figure 4] 1 is a front view showing the mounting structure of a display device 23, as seen from the front side of a vehicle body 10. FIG. [Figure 5] 1 is a side view of the mounting structure of the display device 23 as seen from the right side of the vehicle body 10. FIG. [Figure 6] 10 is an explanatory diagram showing a method for adjusting the attitude of the display device 23. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0021] A work vehicle 1 according to an embodiment of the present invention will now be described with reference to FIGS.

[0022] (Configuration of Work Vehicle 1) FIG. 1 is a perspective view of an example of a work vehicle 1, as seen from the rear. FIG. 2 is a perspective view of the vehicle body 10, which is an upper rotating body, as seen from the side. FIG. 3 is a perspective view of the vehicle body 10, as seen obliquely from the front. In each of the drawings described below, arrows indicate the direction of each part relative to the vehicle body 10. That is, the forward direction of the work vehicle 1 is defined as the front, the backward direction as the rear, and the right side of the forward direction as the right and the left side as the left. The work vehicle 1 has, below both ends of the vehicle width direction (left-right direction) of the vehicle body 10, a traveling device 12 having a pair of crawlers 11, a hydraulically driven working device 13, a blade device 14, and the like.

[0023] Located on top of the vehicle body 10 are a cab 15 where the operator operates the traveling gear 12, working gear 13, and blade gear 14, and an operator seat 16 where the operator sits. Although not shown in the figures, the vehicle body 10 is configured with a machinery room 17 that houses a hydraulic pump, a power source (battery) that supplies electricity, and a power supply circuit. The cab 15 has a canopy configuration without a roof. The traveling gear 12, working gear 13, and blade gear 14 can be explained in the same way as for known work vehicles, so explanations will be omitted here.

[0024] The operator's cab 15 is equipped with a right remote control lever 20, a left remote control lever 21, a travel lever 22, and operation switches for operating the traveling device 12, the work device 13, the blade device 14, etc., as well as a display device 23 that displays various vehicle information. The operator's cab 15 has a rear support 24 erected behind the operator seat 16, and a handrail 25 erected in front. The display device 23 is attached to the handrail 25.

[0025] The rear support 24 and the handrail 25 are made of pipes. The handrail 25 has a function of mounting the display device 23.

[0026] The mounting position of the display device 23 will be described with reference to Figures 2 and 3. Note that the reference numerals in Figures 2 and 3 are the same as those in Figure 1, and therefore their description may be omitted. The display device 23 is fixed to a handrail 25 with the display screen unit 40 facing the operator seat 16, i.e., the seated operator. The handrail 25 is fixed by brackets 27 on both the left and right sides of front cover fixing parts (not shown) that fix the front cover 26 inside the front cover 26 arranged in front of the vehicle body 10. The bracket 27 on the right side surface is not shown.

[0027] A wire harness 41 (see FIG. 3) is connected to the display device 23. The wire harness 41 is inserted into the handrail 25 and extends into the front cover 26. In this example, the wire harness 41 is formed by bundling multiple cables in a protective tube. The handrail 25 has a pillar 28 fixed to the left side surface of the front cover 26 with a bracket 27, and a horizontal pipe 29 that bends and extends from the upper end of the pillar 28 in the width direction (right side) of the vehicle body 10. The handrail 25 is composed of the pillar 28 and a front handrail 30 that extends upward from the pillar 28. The pillar 28 and the front handrail 30 are connected and fixed by welding or the like. The right side of the front handrail 30 is fixed to the front cover 26 using a bracket 27, just like the left side.

[0028] The wire harness 41 is inserted into the inside of the front cover 26 through the horizontal pipe portion 29 and the pillar portion 28. The horizontal pipe portion 29 is formed by bending the pillar portion 28, making it easy to insert the wire harness 41. The display device 23 is equipped with a display screen portion 40 that displays the driving status, work status, etc. The display device 23 is connected via the wire harness 41 to various control circuits (not shown) arranged inside the front cover 26.

[0029] The display device 23 is fixed to the fixture 43 by a fixing means such as screws. The display device 23 is attached to the horizontal pipe portion 29 by the fixture 43. The attachment structure of the display device 23 will be described with reference to FIGS. 4 and 5.

[0030] (Mounting structure of display device 23) FIG. 4 is a front view showing the mounting structure of the display device 23, as seen from the front side of the vehicle body 10. FIG. 5 is a side view showing the mounting structure of the display device 23, as seen from the right side of the vehicle body 10. As shown in FIGS. 4 and 5, the display device 23 includes a connector portion 45 that connects the wire harness 41 to the rear portion 42, a display bracket 46 that connects the display device 23 and the fixture 43 so that the display device 23 can rotate within a predetermined range, and a visor portion 47 that covers the upper part of the connector portion 45. The visor portion 47 and the display bracket 46 are integrated with the rear portion 42 by welding. The display bracket 46 has a long hole 46a (see FIG. 5) that is long in the rotation direction of the display device 23, which serves as a swing restriction means for restricting the swing range of the display device 23.

[0031] The fixture 43 has a main body 50 for fixing the display device 23, and a handle 51 for tightening or loosening the fixture 43 relative to the horizontal pipe 29. The main body 50 has a horizontal pipe insertion hole 52 through which the horizontal pipe 29 can be inserted, and a slit 53 that traverses the horizontal pipe insertion hole 52 and the outer periphery of the main body 50. The main body 50 has a fixing surface 50a that faces the back surface 42 of the display device 23, and the display device 23 is fixed by a fixing means such as a screw (not shown) with the back surface 42 and fixing surface 50a abutting against each other.

[0032] The slit portion 53 is formed on the opposite side of the horizontal pipe portion insertion hole 52 with respect to the display device 23. By providing the slit portion 53, the fixing device 43 configures a so-called clamp mechanism portion 54. This clamp mechanism portion 54 is provided with a through hole 56 (see FIG. 5) that crosses the slit portion 53. As shown in FIG. 5, the handle portion 51 is configured with a grip portion 55, a grip portion fixing member 65 that fixes the grip portion 55, and a collar 59. A female thread 65a is formed in the grip portion fixing member 65. In the clamp mechanism portion 54, the main body portion 50 and the handle portion 51 are integrated by inserting the male thread 57 of the bolt 58 from the opposite side of the handle portion 51 through the through hole 56 and the collar 59 and screwing it into the female thread 65a formed in the grip portion fixing member 65.

[0033] By rotating the handle portion 51 counterclockwise as viewed from below to loosen the bolt 58 and widen the gap between the slit portions 53, the display device 23 can be rotated to the desired angle θ around the horizontal pipe portion 29 as the rotation axis. Then, by rotating the handle portion 51 clockwise as viewed from below to tighten the bolt 58 and narrow the gap between the slit portions 53, the display device 23 can be fixed to the horizontal pipe portion 29. The grip portion 55 protrudes to a length that is easier to grasp than the outer diameter of the grip portion fixing member 65, and therefore can be easily operated without any special tools.

[0034] A heat-shrinkable tube 60 serving as a sliding assist member is interposed between the horizontal pipe portion insertion hole 52 of the fixture 43 and the horizontal pipe portion 29. A waterproof grommet 62, through which the wire harness 41 can be inserted, is fitted into a wire harness insertion opening 61 (see FIG. 4) of the horizontal pipe portion 29. The provision of the waterproof grommet 62 makes it possible to maintain waterproofing and dustproofing between the wire harness 41 and the horizontal pipe portion 29. A fixing portion 70 of an angle regulating shaft 71 is fixed to the tip end of the horizontal pipe portion 29. The fixing portion 70 of the angle regulating shaft 71 is a plate member that extends to a position where it overlaps with the display bracket 46.

[0035] The display bracket 46 and the fixing portion 70 of the angle limiting shaft 71 are connected via the angle limiting shaft 71. For example, the angle limiting shaft 71 is a bolt, the shaft portion of which is inserted into the elongated hole 46a of the display bracket 46 and a through-hole (not shown) provided in the fixing portion 70 of the angle limiting shaft 71, and the protruding threaded portion is screwed into a nut 73 (see FIG. 4 ) welded to the fixing portion 70 of the angle limiting shaft 71. The fixing portion 70 of the angle limiting shaft 71 is fixed to the horizontal pipe portion 29. A double nut structure may be formed by providing a nut 72 in addition to the nut 73. The display bracket 46 is fixed to the display device 23. Therefore, when the display device 23 is rotated clockwise, the left end of the elongated hole 46a in the figure abuts against the angle limiting shaft 71 and stops. When the display device 23 is rotated counterclockwise, the right end of the elongated hole 46a in the figure abuts against the angle limiting shaft 71 and stops. In other words, the display device 23 is configured to be rotatable within the range of the elongated hole 46a. The display device 23 shown in FIG. 5 has the display screen unit 40 tilted upward by an angle θ with respect to a vertical plane P. In this embodiment, the angle θ is set to 10 degrees. In other words, the display bracket 46, the fixing portion 70 of the angle restriction shaft 71, and the angle restriction shaft 71 constitute a rotation angle restriction mechanism 49 for the display device 23.

[0036] FIG. 6 is an explanatory diagram showing a method for adjusting the attitude of the display device 23. The display device 23 can be adjusted to any attitude within a range in which it can be swung within a range in which the elongated hole 46a of the display bracket 46 abuts against the angle restriction shaft 71. This will be explained with reference to FIG. 6. The attitude of the display device 23 shown in FIG. 5 is assumed to be the reference attitude (A attitude). FIG. 6(a) shows a state in which the display device 23 has been rotated counterclockwise (in the direction of the arrow) by an angle θ from the reference attitude (A attitude). In FIG. 6(a), a part of the display device 23 shown in FIG. 5 is represented by a two-dot chain line.

[0037] As shown in Figure 6(a), the operator grips and operates the grip portion 55 of the handle portion 51 to loosen the screw connection between the grip portion fixing member 65 and the bolt 58, and rotates the display device 23 counterclockwise (in the direction of the arrow) as viewed from above on the page. The display device 23 can be rotated until the right end of the elongated hole 46a of the display bracket 46 abuts against the angle restriction shaft 71. The operator operates the handle portion 51 at an angle θ that is easy for the operator to view, within the range of angle θ, and tightens the fixing device 43 to fix the display device 23.

[0038] FIG. 6(b) shows the display device 23 rotated by an angle θ clockwise (in the direction of the arrow) as viewed from above the page from the position shown in FIG. 6(a) (position A). Note that in FIG. 6(b), a portion of the display device 23 shown in FIG. 6(a) is indicated by a two-dot chain line. The operator grasps and operates the grip portion 55 of the handle portion 51 to loosen the engagement between the grip portion fixing member 65 and the bolt 58, and rotates the display device 23 clockwise (in the direction of the arrow) as viewed from above the page. The display device 23 can be rotated until the left end of the elongated hole 46a of the display bracket 46 abuts against the angle restriction shaft 71. At this time, the display screen unit 40 is tilted clockwise by an angle θ from position A. The operator operates the handle portion 51 at an angle θ that is easy for the operator to view, within the range of angle θ, and tightens the fixing device 43 to fix the display device 23.

[0039] In this embodiment, the angle θ is set to 10 degrees, so that the display screen unit 40 can be adjusted to any angle θ within a range of ±10 degrees from the A position shown in FIG. 6(a). However, the angle θ can be freely set within a range in which the elongated hole 46a can be formed. Furthermore, the means for restricting the rotation angle adjustment range of the display device 23 is not limited to the elongated hole 46a, and may include, for example, the provision of a pad member. By adopting such a configuration, the length of the exposed portion of the wire harness 41 between the display device 23 and the horizontal pipe portion 29 can be shortened to the minimum necessary.

[0040] The display device 23 is fixed to a horizontal pipe 29, which is disposed in front of the operator seat 16 and extends in the width direction (left-right direction) of the work vehicle 1, by a fixture 43. A wire harness 41, which is connected to the display device 23, can be inserted through the horizontal pipe 29. The fixture 43 is equipped with a clamp mechanism 54. By operating the handle 51 to loosen the fastening of the fixture 43, the display device 23 can be rotated around the horizontal pipe 29 as the rotation axis. By operating the handle 51 to tighten the fastening fixture 43, the display device 23 can be fixed at a desired angle θ.

[0041] The angle θ of the display device 23 can be adjusted using the horizontal pipe section 29 and the clamp mechanism section 54. Furthermore, because the wire harness 41 is passed through the horizontal pipe section 29, it is possible to prevent the operator from getting the wire harness 41 caught on something, and it is also possible to achieve a neat appearance. The display device 23 can be fixed to the horizontal pipe section 29 with a fixture 43, which prevents the angle θ of the display device 23 from shifting due to vibrations or shocks while the work vehicle 1 is traveling or working.

[0042] A waterproof grommet 62 is fitted into the wire harness insertion opening 61 of the horizontal pipe portion 29. The provision of the waterproof grommet 62 makes it possible to prevent rainwater, dust, and the like from entering the inside of the horizontal pipe portion 29 through the wire harness insertion opening 61. As a result, it is possible to prevent rainwater, dust, and the like from entering the inside of the front cover 26 through the wire harness insertion opening 61. It is also possible to prevent short circuits of the wire harness 41 and damage to electrical components and the like caused by rainwater running down the wire harness 41 into the inside of the front cover 26. Furthermore, because the wire harness 41 is inserted through the waterproof grommet 62, it is possible to prevent the wiring harness 41 from coming into direct contact with the wire harness insertion opening 61 of the horizontal pipe portion 29, thereby preventing the sheath of the wire harness 41 from being rubbed and damaged.

[0043] The clamp mechanism 54 has a horizontal pipe insertion hole 52 formed in the main body 50, a slit 53 that extends from the horizontal pipe insertion hole 52 to the outer periphery of the main body 50, bolts 58 arranged on either side of the slit 53 in the cross-sectional direction, and a handle 51 on which a female thread 65a that screws onto the bolt 58 is formed. By rotating the handle 51 in one direction, the clamp mechanism 54 can widen the gap between the slits 53 and rotate the display device 23 around the horizontal pipe 29 as a rotation axis. By rotating the handle 51 in the other direction, the gap between the slits 53 can be narrowed and the display device 23 can be fixed to the horizontal pipe 29.

[0044] The display device 23 and fixture 43 also have a rotation angle restriction mechanism 49 that restricts the angle θ by which the display device 23 can rotate. The display device 23 has an elongated hole 46a in the display bracket 46. The fixture 43 has a fixing portion 70 of an angle restriction shaft 71 that is fixed to the horizontal pipe portion 29. The angle restriction shaft 71 is inserted into the elongated hole 46a, and the angle restriction shaft 71 is screwed into a nut 73 with the display bracket 46 and the fixing portion 70 of the angle restriction shaft 71 sandwiched between them. With this configuration, the display bracket 46, i.e., the display device 23, can be rotated within the range of the elongated hole 46a.

[0045] The rotation angle θ of the display device 23 can be restricted within a certain range by the rotation angle restriction mechanism 49, and the handle portion 51 is located in an easy-to-operate position, making it easy to adjust the rotation angle. In addition, it is possible to prevent damage caused by excessive rotation of the display device 23 and the wire harness 41 being pulled or entangled.

[0046] Furthermore, a heat shrink tube 60 is interposed between the horizontal pipe section 29 and the horizontal pipe section insertion hole 52 of the fixture 43 as a sliding assist member. By providing the heat shrink tube 60, the fixture 43 does not rub directly against the horizontal pipe section 29 when adjusting the angle of the display device 23, making it possible to prevent paint from peeling. Note that the sliding assist member is not limited to the heat shrink tube 60; tape or the like can also be wrapped around the horizontal pipe section 29. However, the heat shrink tube 60 has the advantages of being easy to attach to the horizontal pipe section 29 and having excellent durability.

[0047] The display device 23 is fixed to a horizontal pipe portion 29 that is part of the handrail 25. The handrail 25 is fixed by brackets 27 to both the left and right sides of front cover fixing parts (not shown) that fix the front cover 26 inside the front cover 26 that is disposed in front of the vehicle body 10. This configuration allows for effective use of space in a small work vehicle 1 with a narrow cab 15. Furthermore, the wire harness 41 connected to the display device 23 can be arranged between the display device 23 and the front cover 26 via the shortest route.

[0048] The work vehicle 1 described above makes it possible to adjust the vertical angle θ of the display screen 40 of the display device 23 to an angle θ that is easy for the operator to view. It also makes it possible to prevent the paint on the horizontal pipe 29 that supports the display device 23 from peeling off, and to prevent rainwater from entering the inside of the horizontal pipe 29 through which the wire harness 41 is inserted. [Explanation of symbols]

[0049] 1...work vehicle, 16...operator seat, 23...display device, 25...handrail, 26...front cover, 27...bracket, 28...pillar portion, 29...horizontal pipe portion, 30...front handrail portion, 40...display screen portion, 41...wire harness, 42...back portion, 43...fixing device, 46...display bracket, 46a...long hole, 49...rotation angle restriction mechanism, 50...main body portion (of fixing device), 51...handle portion, 52...horizontal pipe portion insertion hole, 53...slit portion, 54...clamp mechanism portion, 56...through hole, 57...male screw, 58...bolt, 60...heat shrinkable tube (sliding auxiliary member), 61...wire harness insertion port portion, 62...waterproof grommet, 65a...female screw, 70...fixing portion (of angle restriction shaft 71), 71...angle restriction shaft, 72, 73...nut, θ...angle, P...vertical plane

Claims

1. The display device includes a horizontal pipe portion, a fixing device, and a waterproof grommet. the horizontal pipe portion is disposed in front of the operator seat and allows a wire harness connected to the display device to be inserted therethrough; the fixture has a clamp mechanism that fixes the display device to the horizontal pipe, The waterproof grommet is fitted into a wire harness insertion port of the horizontal pipe portion, The clamp mechanism is configured so that the display device can be rotated around the horizontal pipe portion as a rotation axis by loosening the clamping of the horizontal pipe portion, and the display device can be fixed in place by tightening the horizontal pipe portion. A work vehicle characterized by:

2. The work vehicle according to claim 1, the clamp mechanism includes a horizontal pipe insertion hole through which the horizontal pipe can be inserted, a slit extending from the horizontal pipe insertion hole to the outer shell, a bolt disposed on either side of the slit in the cross-sectional direction, and a handle portion formed with a female thread that screws onto the bolt; By rotating the handle portion in one direction, the interval between the slit portions is widened, thereby enabling the display device to be rotated around the horizontal pipe portion as a rotation axis; By rotating the handle portion in the other direction, the gap can be narrowed and the display device can be fixed to the horizontal pipe portion. A work vehicle characterized by:

3. The work vehicle according to claim 2, a rotation angle restriction mechanism for restricting a rotation angle of the display device; the rotation angle restriction mechanism includes a display bracket fixed to the display device, and an "angle restriction shaft fixing portion" fixed to the horizontal pipe portion and extending along the display bracket, the display bracket has a slot that is long in a rotation direction of the display device; the angle restriction shaft is inserted into the elongated hole, and the display device is configured to be rotatable within a range in which the elongated hole abuts against the angle restriction shaft. A work vehicle characterized by:

4. The work vehicle according to claim 1, a slide assist member is interposed between the horizontal pipe portion and a horizontal pipe portion insertion hole formed in the fixture; A work vehicle characterized by:

5. The work vehicle according to claim 4, The slide assist member is a heat-shrinkable tube. A work vehicle characterized by:

6. The work vehicle according to claim 1, the horizontal pipe portion constitutes a part of a handrail disposed on the front side of the operator seat, The handrail is fixed to a side surface of a front cover fixing component that fixes a front cover disposed in front of the operator seat. A work vehicle characterized by:

Images