Work vehicles

Abstract

To provide a work vehicle that offers excellent ease of attachment and detachment of covers that close openings provided on inclined surfaces. [Solution] A work vehicle 1 is provided with an equipment storage chamber 14 defined by an inclined plate member 17, an opening 17A formed in the plate member 17 that opens the equipment storage chamber 14, and a removable cover 15 that is placed on top of the plate member 17 around the opening 17A and closes the opening 17A. The cover 15 has a cover body 20 that covers the opening 17A and a gripping portion 22B provided on the upper part of the cover body 20, wherein the gripping portion 22B is located on a virtual line drawn vertically from the center of gravity O of the cover 15 or on the side of the virtual line with a higher inclination, when the cover body 20 is in a position along the inclination of the plate member 17.

Description

Technical Field

[0001] The present invention relates to a work vehicle provided with a work device at the front of a vehicle body.

Background Art

[0002] Some work vehicles such as wheel loaders and forklifts have a storage chamber that houses hydraulic equipment for supplying hydraulic pressure to a work tool attachment / detachment device for exchanging work tools such as buckets, plows, and sweepers attached to the tip of an arm. An opening is provided on the outer peripheral surface of the storage chamber for attaching / detaching and inspecting the hydraulic equipment, and the opening is covered with a cover. For example, in the work vehicle described in Patent Document 1, a plate-shaped cover is attached by bolts and nuts, and an operator can hold a handle provided at the center of the cover to attach / detach the cover.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, since the cover of the work vehicle described in Patent Document 1 has a handle provided at the center, when the cover is lifted by holding the handle, the cover plate surface is lifted in a substantially horizontal state. At this time, when the attached cover is attached to the inclined outer peripheral surface of the work vehicle, if the cover is lifted, the cover may swing from the inclined state to a horizontal posture and contact the surroundings. Further, when holding the cover so as to prevent swinging in order to avoid contacting the surroundings, it is necessary to hold it more strongly, which imposes a burden on the operator.

[0005] Therefore, the object of the present invention is to provide a work vehicle that offers excellent ease of attachment and detachment of a cover that closes an opening provided on an inclined surface. [Means for solving the problem]

[0006] To achieve the above objective, the present invention provides a work vehicle comprising: an equipment housing chamber defined by an inclined plate member; an opening formed in the plate member that opens the equipment housing chamber; and a removable cover that is placed on top of the plate member around the opening and closes the opening, wherein the cover comprises a cover body that covers the opening and a gripping portion provided on the upper part of the cover body, characterized in that the gripping portion is located on a virtual line drawn vertically from the center of gravity of the cover or on the side of the virtual line that is higher inclination, when the cover body is in a position that conforms to the inclination of the plate member. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a work vehicle with excellent ease of attachment and detachment of a cover that closes an opening provided on an inclined surface. Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments. [Brief explanation of the drawing]

[0008] [Figure 1] This is a side view of a wheel loader, which is an example of a work vehicle according to this embodiment. [Figure 2] This is a perspective view showing the cover attached. [Figure 3] This is a perspective view showing the device with the cover removed. [Figure 4] This is a longitudinal cross-sectional view showing the cover in place. [Figure 5A] This is a view of the cover in its installed position, seen from the front. [Figure 5B] This is a side view of Figure 5A. [Figure 6A] This is a perspective view of the bottom side of the cover, seen from the top side. [Figure 6B]It is a perspective view of the lower surface side of the cover seen from the lower end side. [Figure 7A] It is a side view showing the equipment housing chamber and the cover. [Figure 7B] It is a view from arrow A in FIG. 7A. [Figure 7C] It is a view from arrow B in FIG. 7A. [Figure 8] It is a view showing part C in FIG. 7B. [Figure 9A] It is a view showing the state of the cover without a balance weight. [Figure 9B] It is a view showing the state of the cover with a balance weight. [Figure 10A] It is a perspective view showing how to attach the cover. [Figure 10B] It is a side view showing how to attach the cover. [Figure 11A] It is a perspective view showing a first modified example of the cover. [Figure 11B] It is a perspective view showing a second modified example of the cover. [Figure 11C] It is a perspective view showing a third modified example of the cover.

Mode for Carrying Out the Invention

[0009] Referring to the drawings, an embodiment of a work vehicle according to the present invention will be described. FIG. 1 is a side view of a wheel loader 1 which is an example of the work vehicle according to the present embodiment. For convenience of explanation, in the present embodiment, as shown in FIG. 1, the front-rear direction and the vertical direction are defined, and as shown in FIG. 2, the direction which becomes the vehicle width direction in the state where the wheel loader 1 is viewed from the front side will be described as the left-right direction.

[0010] <Outline of Wheel Loader 1> As shown in FIG. 1, the wheel loader 1 has a front body 4 having a front device 2, front wheels 3, etc., and a rear body 8 having a cab 5, an engine room 6, rear wheels 7, etc. The front device 2 is configured to include various work tools such as an arm 9 and a bucket 10. An engine, a hydraulic pump, etc. are housed in the engine room 6.

[0011] The front body 4 and the rear body 8 are connected to each other so as to be rotatable about a center pin along the vertical direction, and the front body 4 bends left and right with respect to the rear body 8 by the expansion and contraction of the steering cylinder.

[0012] An arm 9 is rotatably connected to a frame 11 constituting the front body 4, and a front device 2 is held by the frame 11. A bucket 10 is rotatably connected to the tip of the arm 9 with respect to the arm 9. The arm 9 rotates (pitches) in the vertical direction by the drive of an arm cylinder 12, and the bucket 10 rotates in the vertical direction by the drive of a bucket cylinder 13.

[0013] The front body 4 is provided with a control valve for a front device that controls the flow of pressure oil from a hydraulic pump housed in an engine room 6 to the arm cylinder 12 and the bucket cylinder 13, and a control valve for a well-known vibration suppression device that suppresses vibrations generated during traveling, and other hydraulic devices (not shown) are housed in an equipment housing chamber 14. The equipment housing chamber 14 is defined by a frame 11 constituting the front body 4.

[0014] FIG. 2 is a perspective view showing a state in which a cover 15 is attached, FIG. 3 is a perspective view showing a state in which the cover 15 is removed, and FIG. 4 is a longitudinal sectional view showing a state in which the cover 15 is attached. As shown in FIGS. 2 and 3, the equipment housing chamber 14 includes a pair of side plates 16 that constitute the left and right side walls of the equipment housing chamber 14, and a front plate 17 that constitutes the front surface of the equipment housing chamber 14. The front plate 17 is provided between the pair of side plates 16 and has an inclination in which the height decreases from the rear side to the front side. The side plates 16 and the front plate 17 constituting the equipment housing chamber 14 are formed of a metal such as a steel plate. Here, the front plate 17 corresponds to an inclined plate member that defines the equipment housing chamber.

[0015] As shown in Figure 3, the front panel 17 is provided with an opening (hereinafter referred to as the inspection opening) 17A for attaching, detaching, and inspecting hydraulic equipment housed in the equipment storage chamber 14. The inspection opening 17A is roughly rectangular in shape and is covered by a cover 15 that can be attached to and removed from the front panel 17, as shown in Figure 2. As shown in Figures 2 and 4, the cover 15 is attached by bolts 19 and nuts 19A welded to the underside of the front panel 17, and is configured to be removable for inspections, etc. In the following description, the cover 15 will be described with the front-rear and up-down directions specified, with the cover 15 attached to the front panel 17.

[0016] <Composition of Cover 15> Figures 5 and 6 show the cover 15, where Figure 5A is a front view of the cover 15 in its installed position, Figure 5B is a side view of Figure 5A, Figure 6A is a perspective view of the underside of the cover 15 seen from the top end, and Figure 6B is a perspective view of the underside of the cover 15 seen from the bottom end. Figure 7 shows the equipment housing chamber 14 or inspection opening 17A and the cover 15, where Figure 7A is a side view of the equipment housing chamber 14 and the cover 15, Figure 7B is a view taken along arrow A in Figure 7A, and Figure 7C is a view taken along arrow B in Figure 7A. Figure 8 is a view taken along arrow C in Figure 7B.

[0017] As shown in Figures 5 to 8, the cover 15 has a flat cover body 20, a handle 21 provided on the upper part of the cover body 20, and a balance weight 22 provided on the lower part of the cover body 20. The cover body 20, handle 21, and balance weight 22 that make up the cover 15 are made of metal such as steel.

[0018] The cover body 20 is roughly rectangular in shape, larger than the inspection opening 17A, and each of its four corners is formed in an arc shape. The cover body 20 is provided with bolt insertion parts 20A and 20B at two locations each on the upper and lower ends, through which bolts 19 for fixing it to the front plate 17 can be inserted.

[0019] The upper bolt insertion portion 20A is a circular or elongated through-hole, while the lower bolt insertion portion 20B is a vertically elongated notch with its lower edge open. The cover 15 is attached by fastening bolts 19, inserted through the bolt insertion portions 20A and 20B, to nuts 19A welded to the lower surface of the front plate 17.

[0020] The handle 21 is formed by bending a cylindrical or columnar rod-shaped member into a U-shape, and has connecting ends 21A that are joined at right angles to the upper surface of the cover body 20 at both ends, and a gripping portion 21B that connects the upper ends of the connecting ends 21A and is used for the worker to grasp. The gripping portion 21B of the handle 21 is positioned almost horizontally along the left-right direction and is provided parallel to the cover body 20.

[0021] The balance weight 22 is formed by bending a strip of steel plate. The balance weight 22 has a fixed portion 22A that is welded to the lower surface of the cover body 20 in a face-to-face manner, protruding portions 22B that are bent away from the cover body 20 from both ends of the fixed portion 22A in the left-right direction, and a guide portion 22C that extends from the tip of the protruding portion 22B.

[0022] The fixing portion 22A is a roughly rectangular flat plate, and the protruding portions 22B are provided by bending at roughly right angles from both ends of the fixing portion 22A in the longitudinal direction. The fixing portion 22A is arranged so that its longitudinal direction is aligned with the left-right direction, and the protruding portions 22B provided at both ends are spaced apart and face each other in the left-right direction when the fixing portion 22A is fixed to the cover body 20.

[0023] The width W1 (Figure 5A) from the opposite side of one of the two opposing protrusions 22B to the opposite side of the other protrusion 22B is formed to be slightly narrower than the width W2 (Figure 7C) of the inspection opening 17A in the left-right direction (horizontal direction).

[0024] The guide portion 22C is provided extending further from the protruding tip of each protruding portion 22B. The extension direction of the guide portion 22C has a slight downward inclination α with respect to the protruding direction of the protruding portion 22B, which protrudes perpendicular to the surface of the cover body 20. The inclination α of the extension direction of the guide portion 22C with respect to the protruding direction of the protruding portion 22B will be described later.

[0025] The guide sections 22C are inclined such that the distance between the left and right guide sections 22C gradually narrows toward the tip in the extension direction.

[0026] As shown in Figure 5, the cover 15 is provided with a handle 21 above the center of gravity O of the cover 15, and a balance weight 22 below the center of gravity O. The cover 15 is set so that when a worker or the like grasps the gripping portion 21B of the handle 21 and lifts it, the cover body 20 has the same inclination angle as the front plate 17 on which the inspection opening 17A is located. In other words, the handle 21 and balance weight 22 are positioned so that the gripping portion 21B is located vertically above the center of gravity O of the cover 15 when the cover body 20 has the same inclination angle as the front plate 17.

[0027] <Removing Cover 15> When removing the cover 15 attached to the front panel 17 of this wheel loader 1, the working tools such as the arm 9 and bucket 10, which are provided at the front of the wheel loader 1, should be raised upwards in advance to secure a working space in front of the equipment storage chamber 14.

[0028] The worker first removes the two bolts 19 securing the upper end of the cover body 20 from the front side of the equipment housing 14. Then, loosen the two bolts 19 securing the lower end of the cover body 20, creating a gap between the cover body 20 and the heads of the bolts 19. At this time, the cover 15 is supported by the lower end bolts 19 to prevent it from sliding off the front plate 17.

[0029] Next, the worker grasps the gripping part 21B and lifts the cover 15 backward and upward, pulling it up so that the lower end of the cover body 20 is positioned behind the bolt 19 on the lower end, thereby removing the cover 15. At this time, with the worker grasping the gripping part 21B and lifting the cover 15, the center of gravity O of the cover 15 is located vertically below the gripping part 21B, so the inclination angle of the cover body 20 stabilizes at approximately the same inclination angle as the front plate 17. Therefore, even if the cover 15 that was placed on the front plate 17 is lifted, the posture of the cover body 20 does not change significantly from the state in which it was placed on the front plate 17, so no large swinging occurs in the cover body 20.

[0030] This eliminates the need for the worker lifting the cover 15 to hold it with greater force to suppress the swinging of the heavy cover 15, or to grip the handle 21 with one hand and use the other hand to restrain the swinging of the cover body 20, and also eliminates the risk of being swung around. Furthermore, it prevents the swinging cover 15 from contacting and damaging the surrounding area.

[0031] Furthermore, since the gripping portion 21B of the cover 15 is provided along a horizontal direction perpendicular to the inclination direction in the in-plane direction of the front plate 17, when the cover 15 is lifted by gripping the gripping portion 21B, the cover 15 easily rotates with the gripping portion 21B as an axis extending in the horizontal direction. For this reason, simply by gripping the gripping portion 21B and lifting the cover 15, the center of gravity O of the cover 15 is easily positioned vertically below the gripping portion 21B, making it easy to set the cover body 20 to the same inclination angle as the inclination angle of the front plate 17.

[0032] Furthermore, since the cover 15 is equipped with a balance weight 22, it is possible to position the handle 21 closer to the center of gravity O than if the cover 15 were not equipped with a balance weight 22. As the position of the handle 21 moves away from the center of gravity O along the direction of inclination, the rotational moment due to its own weight around the gripping part 21B increases, and when the cover 15 is moved, it swings, increasing the burden on the worker and making it difficult to handle. For this reason, the cover 15 is made easier to handle by providing a balance weight 22 on the lower end, which positions the handle 21 closer to the center of gravity O than if the cover 15 were not equipped with a balance weight 22. The weight and position of the balance weight 22 can be appropriately set to position the handle 21 in a position that is easy for the worker to work with.

[0033] Furthermore, the cover 15 is equipped with a balance weight 22, which makes it easier to lift the removed cover 15 from a temporarily placed flat surface such as the ground G. Figure 9 is a diagram comparing the state of the cover 15 when it is lifted after being removed. Figure 9A shows the state of the cover 15 without the balance weight 22, and Figure 9B shows the state of the cover 15 with the balance weight 22.

[0034] As shown in Figure 9A, a cover 15 without a balance weight 22 is placed with its entire surface facing the ground G, etc. When the gripping part 21B is grasped and pulled upward in this state, the upper end of the cover body 20 rises while rotating around the lower end 20C of the cover body 20, causing the cover 15 to stand upright. On the other hand, as shown in Figure 9B, a cover 15 with a balance weight 22 is placed with the balance weight 22 and the upper end 20D of the cover body 20 in contact with the ground G. When the gripping part 21B is grasped and pulled upward in this state, the upper end 20D of the cover body 20 rises while rotating around the contact point between the balance weight 22 and the ground G. After the lower end 20C of the cover body 20 comes into contact with the ground G, the cover 15 stands upright as it rotates around the contact point between the lower end 20C of the cover body 20 and the ground G.

[0035] In this case, the cover 15 having the balance weight 22 has its center of gravity shifted towards the lower end 20C of the cover body 20 due to the presence of the balance weight 22, and the balance weight 22 becomes the center of rotation when the cover 15 is upright. As a result, the distance between the center of rotation of the cover 15 and the center of gravity O is shorter than that of a cover 15 without the balance weight 22, which stands upright with the lower end 20C of the cover body 20 as the center of rotation. Therefore, the rotational moment due to the weight of the cover 15 acting when lifting the cover 15 is smaller for the cover 15 having the balance weight 22, thus reducing the burden on the worker when lifting the cover 15.

[0036] In this embodiment, the position of the handle 21 is set such that when the cover 15 is lifted by gripping the gripping part 21B, the cover body 20 has the same inclination angle as the front plate 17, and the gripping part 21B is positioned vertically above the center of gravity O of the cover 15. However, it is not limited to this. For example, when lifting the cover 15, the lower end of the cover body 20 may be less likely to separate from the front plate 17, and the gripping part 21B may be positioned on the side with a higher inclination than the imaginary line drawn vertically from the center of gravity O (the right side in Figure 5).

[0037] In this case, when the cover body 20 is in a position where it has the same inclination angle as the front plate 17, the gripping portion 21B is positioned higher than a virtual line drawn vertically from the center of gravity O. Therefore, when the cover 15 is lifted by gripping the gripping portion 21B, the cover body 20 stabilizes at an inclination closer to vertical than the inclination angle of the front plate 17. When the cover 15 is lifted by gripping the gripping portion 21B from the state in which the cover 15 is placed on the front plate 17, the weight of the cover body 20 begins to act on the lower end to move to the rear, pressing against the inclined front plate 17. As a result, the movement of the lower end of the cover 15 is restricted, and when the cover 15 is lifted away from the front plate 17, the cover 15 is in a stable inclined state, making it possible to suppress the swinging of the cover 15. Therefore, it is possible to suppress the swinging of the cover 15 when lifting it from the front plate 17.

[0038] <Installation of cover 15> When attaching the cover 15 to the front panel 17, the work tools provided in front of the wheel loader 1 are first pulled upward to secure a workspace in front of the equipment storage compartment 14. The worker then inserts bolts 19 into two screw holes provided near the lower end of the inspection opening 17A on the front panel 17, from the front side of the equipment storage compartment 14, screwing them in to the extent that they can support the cover 15.

[0039] Next, grasp the gripping portion 21B of the cover 15 and lift the cover 15. At this time, the cover 15 is lifted in a position where the cover body 20 is at the same inclination angle as the inclination angle of the front plate 17.

[0040] The lifted cover 15 is moved above the front panel 17, bringing the cover body 20 closer to the front panel 17. At this time, the cover 15 is positioned so that the lower end of the cover body 20 is located above the bolt 19 to which it is already attached in the direction of inclination. In other words, it is positioned above the position where it will be fixed.

[0041] Subsequently, as the cover body 20 is moved further closer to the front panel 17, the guide portion 22C begins to enter the inspection opening 17A. At this time, if the left-right position of the cover 15 is misaligned with the position of the inspection opening 17A, the guide portion 22C will contact the left and right edges of the inspection opening 17A, and the cover 15 will be guided and moved towards the center of the inspection opening 17A in the left-right direction along the inclination of the guide portion 22C.

[0042] Furthermore, the cover 15, positioned above the fixed mounting position, is not inserted perpendicular to the front panel 17, but slightly downward. As a result, the guide portion 22C has an inclination α such that its extension direction is slightly downward relative to the projection direction of the projection portion 22B that protrudes perpendicularly from the cover body 20, as described above. This configuration allows the guide portion 22C, which is inserted slightly downward from perpendicular to the front panel 17, to make contact with the edge of the inspection opening 17A over a wider area.

[0043] Figure 10A is a perspective view showing how the cover 15 is installed, and Figure 10B is a side view showing how the cover 15 is installed. Guided by the guide portion 22C, the cover 15 approaches the front plate 17, first bringing the lower end of the cover body 20 into contact with the front plate 17 above the bolt 19, and then moving downward along the slope of the front plate 17 to insert the bolt 19 into the bolt insertion portion 20B provided on the lower end side of the cover body 20, as shown in Figure 10. For this reason, the bolt insertion portion 20B on the lower end side is positioned so that its left-right position coincides with that of the bolt 19 which is screwed in while being positioned on the front plate 17, guided by the guide portion 22C.

[0044] With the bolt 19 inserted into the bolt insertion portion 20B, the cover 15 is positioned as shown in Figure 10, with its lower end inserted between the front plate 17 and the head of the bolt 19, and the upper end of the cover body 20 positioned above the front plate 17 and separated from the front plate 17.

[0045] Next, the cover 15 is moved downward along the front plate 17, the upper end 20E of the lower bolt insertion portion 20B is brought into contact with the bolt 19, and the upper end of the cover body 20 is brought into contact with the front plate 17, thereby placing the cover 15 on the front plate 17. In this state, the downward movement of the cover 15 is restricted by the bolt 19, and the cover body 20 is positioned to cover the inspection opening 17A. Furthermore, in this state, even if the worker releases their hands from the cover 15, the cover 15 remains in a position where the four bolts 19 can be tightened. Therefore, the worker can release both hands from the cover 15 and use their free hands to tighten the bolts 19.

[0046] Next, the bolts 19 are inserted through the bolt insertion portion 20A on the upper end side of the cover body 20, and the bolts 19 are screwed into the two nuts 19A provided near the upper end side of the inspection opening 17A on the front plate 17. The four bolts 19 are then tightened together with the bolt 19 on the lower end side to complete the installation of the cover 15.

[0047] In the above embodiment, an example was described in which the balance weight 22 of the cover 15 is formed by bending a sheet material such as a steel plate. However, the balance weight may be in the shape of a block, and the balance weight does not need to have a guide portion that guides the cover 15 to a position that covers the inspection opening 17A. Furthermore, the cover 15 does not necessarily need to have a balance weight 22.

[0048] Furthermore, in the above embodiment, an example was described in which the gripping portion 21B of the handle 21 is provided along a horizontal direction perpendicular to the inclination direction in the in-plane direction of the front plate 17, but it is not limited to this. Figure 11A is a perspective view showing a first modified example of the cover 15, Figure 11B is a perspective view showing a second modified example of the cover 15, and Figure 11C is a perspective view showing a third modified example of the cover 15. For example, it may be provided along the inclination direction, as in the first modified example shown in Figure 11A. In this case, for example, it may be provided in two places, distributed from the center to the left and right in the left-right direction, as in the second modified example shown in Figure 11B.

[0049] Furthermore, although an example has been described in which the connecting end 21A that connects the gripping portion 21B and the cover body 20 is joined at a right angle to the upper surface of the cover body 20, the invention is not limited to this, and for example, as shown in the third modified example in Figure 11C, the connecting end 21A may be configured such that a portion of it arranged along the front plate 17 is joined to the front plate 17, and one end of it is bent away from the front plate 17, with the gripping portion 21B provided at its tip.

[0050] Embodiments of the present invention have been described above. It should be noted that the present invention is not limited to the embodiments described above, and various modifications are included. For example, the embodiments described above are described in detail to make the present invention easier to understand, and are not necessarily limited to those having all the described configurations. Furthermore, it is possible to replace some of the configurations of this embodiment with those of other embodiments, and it is also possible to add configurations from other embodiments to the configuration of this embodiment. Moreover, it is possible to add, delete, or replace some of the configurations of this embodiment with those of other embodiments.

[0051] For example, in the above embodiment, a wheel loader 1 was used as an example of a work vehicle, but the invention is not limited to this, and other work vehicles such as a forklift may also be used. [Explanation of Symbols]

[0052] 1: Wheel loader (work vehicle) 2: Front device 3: Front wheel 4: Front body 5: Driver's cab 6: Engine Room 7: Rear wheel 8: Rear body 9: Arm 10: Bucket 11: Frame 12: Arm Cylinder 13: Bucket Cylinder 14: Equipment storage room 15: Cover 16: Side panel 17: Front plate (plate member) 17A: Inspection opening (opening) 19: Bolt 19A: Nut 20: Cover body 20A: Bolt insertion section 20B: Bolt insertion section 20C: Bottom end 20D: Upper end 20E: Upper end 21: Handle 21A: Joint end 21B: Grip part 22: Balance weight 22A: Fixed part 22B:Protrusion 22C: Guide section G: Ground O: Center of gravity α: Slope

Claims

1. The device includes an equipment housing chamber defined by an inclined plate member, an opening formed in the plate member that opens the equipment housing chamber, and a removable cover that is placed on top of the plate member around the opening and closes the opening. The cover is a work vehicle having a cover body that covers the opening and a gripping portion provided on the upper part of the cover body, The gripping portion is characterized in that, when the cover body is in a position aligned with the inclination of the plate member, it is located on a virtual line drawn vertically from the center of gravity of the cover or on the side of the virtual line that is higher inclination.

2. In the work vehicle described in claim 1, The gripping portion is provided in a position where the cover body is aligned with the inclination of the plate member, and in a direction perpendicular to the inclination, in a work vehicle.

3. In the work vehicle described in claim 1, The work vehicle is characterized in that the cover is attached to the cover body, and the cover body is positioned along the inclination of the plate member, with a balance weight provided on the side of the inclination lower than the imaginary line.

4. In the work vehicle described in claim 3, The work vehicle is characterized in that the balance weight has a guide portion that guides the cover to a position that covers the opening.

5. In the work vehicle described in claim 4, The work vehicle is characterized in that the guide portion protrudes from the cover body on the side opposite to the gripping portion, is provided in pairs with a gap narrower than the width of the opening in the vehicle width direction, and is formed so that the gap between them narrows towards the tip side in the protruding direction.

6. In the work vehicle described in claim 1, The cover is fixed at its lower end by a bolt that is screwed into the plate member side. The lower end is provided with a notch that is open on the lower edge side, allowing the bolt to be inserted. A work vehicle characterized in that the upper end of the notch is formed in a position that contacts the bolt when the cover is positioned to cover the opening.

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