Work vehicle

Abstract

The present invention provides a work vehicle capable of improving workability when opening and closing a storage body provided on a side portion of a vehicle body. In a wheel loader (1) provided with a storage box (3) attached to a side portion of a vehicle body and behind wheels (11), the storage box (3) is formed in a box shape. A first side surface section (303) that connects the bottom surface section (301) and the upper surface section (302) on the side facing the wheel (11); and a second side surface section (304) that connects the bottom surface section (301), the upper surface section (302), and the first side surface section (303) from the side at a position rearward of the first side surface section (303). The upper surface part (302), the first side surface part (303) and the second side surface part (304) are respectively composed of a main body (31) and a cover (32), the upper surface part (302) comprises a horizontal region (302A) and an inclined region (302B) which is inclined downwards from the horizontal region (302A) to the second side surface part (304) in a gradient manner, and a buckle (33) for locking the cover (32) to the main body (31) is arranged in the inclined region (302B).

Description

Technical Field

[0001] The present invention relates to a wheeled working vehicle having a storage body for storing vehicle-mounted tools, equipment, etc. on a side portion of a vehicle body. Background Art

[0002] In a work vehicle, onboard tools used for maintenance work and equipment that needs to be replaced regularly are stored in a box-shaped storage body, that is, a storage box. This storage box is often provided on the side of the vehicle body so that the operator can easily access it from the ground.

[0003] For example, Patent Document 1 discloses a wheel loader in which a substantially rectangular parallelepiped battery box for storing batteries is installed on the lower side of the rear vehicle body and in front of the counterweight. An inspection window for checking the liquid level of the battery is provided from the upper surface to the side surface of the battery box, and an inspection window cover for preventing the intrusion of rainwater, dust, etc. is installed on the inspection window in a manner that can be opened and closed in the vertical direction. The inspection window cover can be fixed to the side of the battery box by a fastener (stop fitting) when the inspection window is closed.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2012-183943 Summary of the invention

[0007] Problems to be solved by the invention

[0008] However, in the wheel loader described in Patent Document 1, the fasteners for securing the inspection window cover of the battery box are installed on the side of the battery box and behind the wheels, so that the vehicle body is easily splashed with mud from the wheels, especially when the vehicle body is moving forward. When the mud attached to the fasteners due to the splash of mud from the wheels solidifies over time, the fasteners are difficult to move, which hinders the opening and closing operation of the inspection window cover.

[0009] In addition, in order to avoid the impact of mud splashing from the wheels during driving, it is also possible to consider installing the fastener on the upper surface of the battery box, but since the work site is an environment where sand, dust, etc. are easily raised, it is easy for sand, dust, etc. to accumulate on the upper surface of the battery box. Therefore, even in this case, if the sand, dust, etc. accumulated on the fastener solidifies over time, the fastener becomes difficult to move and hinders the opening and closing operation of the inspection window cover.

[0010] Therefore, an object of the present invention is to provide a work vehicle capable of improving the workability when opening and closing a storage body provided on a side portion of a vehicle body.

[0011] Solutions to Solve Problems

[0012] In order to achieve the above-mentioned object, according to the present invention, it is characterized by comprising: a vehicle body; a plurality of wheels, which are arranged on the vehicle body; and a storage body, which is installed on the side of the vehicle body and behind one of the plurality of wheels, the storage body having: a main body, which is formed with an opening portion that allows access to the interior; a cover, which is installed on the main body in an openable and closable manner and covers the opening portion; and a locking piece, which locks the cover to the main body, the storage body is formed into a box shape, and the box shape includes: a bottom portion; an upper surface portion, which is arranged opposite to the bottom portion; a first side portion, which connects the bottom portion and the upper surface portion on a side opposite to the one wheel; and a second side portion, which connects the bottom portion, the upper surface portion and the first side portion from the side at a position rearward of the first side portion, the upper surface portion is composed of the main body and the cover, and includes: a horizontal area, which is parallel to the ground contact surface of the vehicle body; and an inclined area, which is inclined downwardly from the horizontal area toward the second side portion, and the locking piece is arranged in the inclined area of ​​the upper surface portion.

[0013] Effects of the Invention

[0014] According to the present invention, it is possible to improve the workability when opening and closing the storage body provided on the side portion of the vehicle body. Other problems, structures and effects than those described above will become clear from the following description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an external side view showing a structural example of a wheel loader according to an embodiment of the present invention.

[0016] Figure 2 It is a perspective view showing the storage box and its surrounding parts.

[0017] Figure 3 It is a side view showing the storage box and its surrounding parts.

[0018] Figure 4 It is an enlarged perspective view showing a structural example of a buckle and a handle.

[0019] Figure 5 It is a perspective view showing the storage box and its interior in a state where the lid is fully opened.

[0020] Figure 6 It is a side view of the storage box and its interior showing a state where the lid is fully opened.

[0021] Figure 7 This is an explanatory diagram for explaining an example of the relationship between the range of mud splashing from the rear wheel and the portion in the storage box to which mud easily adheres.

[0022] Figure 8This is a diagram showing an example of the positional relationship between the storage box and the rear wheels when viewed from the rear side of the vehicle body.

[0023] Fig. 9 It means in Figure 8 A diagram showing the positional relationship between the storage box and the rear wheel when the rear wheel swings to the left.

[0024] Fig.10 It means in Figure 4 A diagram showing an example of a case where the orientation of the buckle is different.

[0025] Fig.11 It means in Figure 4 A diagram showing an example of a situation where the middle handle faces in different directions.

[0026] Fig.12 It means in Figure 4 Figures showing other examples in which the middle handle is oriented differently. DETAILED DESCRIPTION

[0027] Hereinafter, as one form of the working vehicle according to the embodiment of the present invention, a wheel loader that performs loading and unloading work for excavating, for example, earth, minerals, etc. and loading them into a loading destination such as a dump truck or a hopper will be described.

[0028] <Structure of Wheel Loader 1>

[0029] First, refer to Figure 1 The structure of the wheel loader 1 will be described.

[0030] Figure 1 It is an external appearance side view showing a structural example of the wheel loader 1 according to the embodiment of the present invention.

[0031] The wheel loader 1 is an articulated work vehicle that is steered by folding the vehicle body near the center, and a front frame 101 constituting the front part of the vehicle body and a rear frame 102 constituting the rear part of the vehicle body are rotatably connected in the left-right direction via a central joint 103. The front frame 101 is bent in the left-right direction relative to the rear frame 102 by the steering operation.

[0032] The vehicle body is provided with four wheels 11, two wheels 11 are provided as front wheels 11A on the left and right sides of the front frame 101, and the remaining two wheels 11 are provided as rear wheels 11B on the left and right sides of the rear frame 102. Figure 1 , only the right front wheel 11A and the rear wheel 11B are shown among the four wheels 11. In addition, the right hand side of the operator sitting on the driver's seat facing forward in the left-right direction of the vehicle body is set as the right side of the vehicle body, and the left hand side of the operator is set as the left side of the vehicle body.

[0033] A hydraulically driven working device 2 is mounted at the front of the front frame 101. The working device 2 includes: a lifting arm 21 mounted on the front frame 101 in a manner that allows it to rotate in the up-down direction; two lifting arm cylinders (not shown) that drive the lifting arm 21; a bucket 22 mounted on the front end of the lifting arm 21 in a manner that allows it to rotate in the up-down direction; a bucket cylinder 22A that drives the bucket 22; and a bell crank 23 that is rotatably connected to the lifting arm 21 and constitutes a connecting rod mechanism between the bucket 22 and the bucket cylinder 22A.

[0034] The rear frame 102 is provided with a cab 12 for an operator to sit in, a machine room 13 in which various equipment required for driving the wheel loader 1 is stored, and a counterweight 14 for maintaining balance with the working device 2 to prevent the vehicle body from tipping over. In the rear frame 102, the cab 12 is arranged at the front part, the counterweight 14 is arranged at the rear end part, and the machine room 13 is arranged between the cab 12 and the counterweight 14.

[0035] In addition, a storage box 3 is installed on the right side of the rear frame 102 as a storage body capable of storing, for example, vehicle-mounted tools, etc. Figure 1 As shown, it is fixed behind the right rear wheel 11B, in front of the counterweight 14, and below the machine room 13.

[0036] In addition, the storage box 3 does not necessarily need to be installed behind the rear wheel 11B on the right side of the vehicle body, and can be installed on the side of the vehicle body and behind one wheel 11. Therefore, for example, the storage box 3 can also be installed behind the rear wheel 11B in the left side of the vehicle body, behind the front wheel 11A in the right side of the vehicle body (in front of the rear wheel 11B), etc., depending on the specifications of the vehicle body, the purpose of the storage box 3, etc.

[0037] In addition, in this embodiment, if Figure 1 As shown, a step 15 used by a worker when approaching the machine room 13 is installed between the rear wheel 11B and the storage box 3 on the right side of the rear frame 102 .

[0038] <Structure of Storage Box 3>

[0039] Next, refer to Figure 2 to Figure 6 The structure of the storage box 3 will be described.

[0040] Figure 2 It is a perspective view showing the storage box 3 and its surrounding parts. Figure 3 It is a side view showing the storage box 3 and its surrounding parts. Figure 4 It is an enlarged perspective view showing a structural example of the buckle 33 and the handle 34 . Figure 5 It is a perspective view showing the storage box 3 and the interior thereof with the lid 32 in a fully opened state. Figure 6It is a side view showing the storage box 3 and the interior thereof, with the lid 32 in a fully opened state.

[0041] The storage box 3 has a main body 31 having an opening 310 (see Figure 5 as well as Figure 6 ); a cover 32, which is mounted on the main body 31 in an openable and closable manner and covers the opening 310; a buckle 33 as a locking member, which locks the cover 32 on the main body 31; and a handle 34, which is used to open and close the cover 32.

[0042] For example, the storage box 3 is formed into a box shape by combining a main body 31 formed by bending a metal material such as an iron plate and a cover 32. Specifically, the storage box 3 includes: a bottom surface 301, which faces the grounding surface between the vehicle body; an upper surface 302, which faces the bottom surface 301; and first to fourth side surfaces 303 to 306, which connect the bottom surface 301 and the upper surface 302.

[0043] The first side surface portion 303 connects the bottom surface portion 301 and the upper surface portion 302 on the side facing the right rear wheel 11B. The second side surface portion 304 connects the bottom surface portion 301 and the upper surface portion 302 on the side exposed to the outside of the vehicle body. That is, the second side surface portion 304 connects the bottom surface portion 301, the upper surface portion 302, and the first side surface portion 303 from the side at a position rearward of the first side surface portion 303.

[0044] The third side surface portion 305 connects the bottom surface portion 301 and the top surface portion 302 on the side opposite to the counterweight 14, that is, on the opposite side to the first side surface portion 303. The fourth side surface portion 306 connects the bottom surface portion 301 and the top surface portion 302 on the side opposite to the right side portion of the rear frame 102, that is, on the opposite side to the second side surface portion 304.

[0045] Therefore, when the storage box 3 is viewed from the upper surface portion 302, the first to fourth side portions 303 to 306 are arranged in the order of the first side portion 303, the second side portion 304, the third side portion 305, and the fourth side portion 306 in a clockwise direction from the front side of the vehicle body (the side opposite to the rear wheel 11B on the right side). The first to fourth side portions 303 to 306 are respectively vertically erected from the bottom portion 301. For example, the second side portion 304 connects the bottom portion 301 and the upper surface portion 302 on the side exposed to the outside of the vehicle body, and connects the first side portion 303 and the third side portion 305.

[0046] In addition, in this embodiment, the storage box 3 includes first to fourth side portions 303 to 306, but does not necessarily have to include four side portions 303 to 306. For example, the third side portion 305 can be formed using a portion of the counterweight 14. In addition, the fourth side portion 306 can be formed using a portion of the right side portion of the rear frame 102. It is sufficient to include at least the first side portion 303 and the second side portion 304 among the first to fourth side portions 303 to 306.

[0047] The upper surface portion 302 includes a horizontal region 302A (horizontal surface) parallel to the ground contact surface between the vehicle body and an inclined region 302B (inclined surface) that is gradually inclined downward from the horizontal region 302A toward the second side surface portion 304. In the present embodiment, the bottom portion 301 is formed parallel to the ground contact surface between the vehicle body. That is, in the present embodiment, the horizontal region 302A of the upper surface portion 302 is parallel to the bottom portion 301. Therefore, as Figure 2 As shown, the storage box 3 is formed into a shape having seven faces by deforming a rectangular parallelepiped having six faces and forming a rectangular inclined region 302B between the horizontal region 302A and the second side surface portion 304 .

[0048] like Figure 2 , Figure 5 as well as Figure 6 As shown, the opening 310 of the storage box 3 is open over a portion of the upper surface 302, the first side surface 303, and the second side surface 304. That is, the cover 32 extends over a portion of the upper surface 302, the first side surface 303, and the second side surface 304.

[0049] Therefore, in the storage box 3 , the upper surface portion 302 , the first side surface portion 303 , and the second side surface portion 304 are constituted by the main body 31 and the cover 32 , and the bottom surface portion 301 , the third side surface portion 305 , and the fourth side surface portion 306 are constituted only by the main body 31 .

[0050] In addition, if Figure 5 as well as Figure 6 As shown, the main body 31 of the storage box 3 is fixed to the right side of the rear frame 102 from the inner side of the fourth side portion 306 by a plurality of bolts 5. In addition, the storage box 3 is only fixed to the right side of the rear frame 102, and is not fixed to the counterweight 14. Figure 3 As shown, a slight gap is formed between the third side portion 305 and the counterweight 14 .

[0051] The interior of the storage box 3 is divided into a first space 312 and a second space 313 by a partition wall 311. The partition wall 311 is vertically arranged from the central area of ​​the bottom surface 301 toward the horizontal area 302A of the upper surface 302. The first space 312 is a room arranged on the side of the counterweight 14, and for example, a vehicle-mounted tool (not shown) used during maintenance work of the wheel loader 1 is stored. The second space 313 is a room arranged on the side of the rear wheel 11B, and the fuel supply port 4 for supplying fuel for the engine is arranged to point to the inclined area 302B of the upper surface 302.

[0052] like Figure 3 As shown, the fuel supplied from the fuel supply port 4 passes through a fuel supply pipe 40 connected to the fuel supply port 4 and extending to the outside of the storage box 3 through a bottom surface portion 301 of the storage box 3, and is stored in a fuel tank (not shown) mounted below the machine room 13.

[0053] like Figure 2 , Figure 3 , Figure 5 as well as Figure 6 As shown, the storage box 3 has a pair of hinges 35A and 35B on the first side portion 303 for fixing the cover 32 to the main body 31 in a rotatable manner. In this embodiment, the pair of hinges 35A and 35B are arranged at a predetermined interval along a direction inclined obliquely downward from the fourth side portion 306 to the second side portion 304. The direction in which the pair of hinges 35A and 35B are inclined is approximately parallel to the inclination direction of the inclined area 302B of the upper surface portion 302.

[0054] In the present embodiment, the main body 31 and the cover 32 are connected by a pair of hinges 35A and 35B. However, the number of hinges connecting the main body 31 and the cover 32 does not necessarily need to be a pair, and there is no particular limitation on the number of hinges.

[0055] The cover 32 is opened and closed in the front-rear direction of the vehicle body with the pair of hinges 35A and 35B as the rotation center. Specifically, the cover 32 is opened by rotating toward the right side of the rear wheel 11B in the front direction of the vehicle body with the pair of hinges 35A and 35B as the rotation center, and is closed by rotating toward the counterweight 14 in the rear direction of the vehicle body with the pair of hinges 35A and 35B as the rotation center.

[0056] like Figure 2 as well as Figure 3 As shown, a stopper 36 for preventing the cover 32 from rotating in the opening direction is provided on the first side surface portion 303. The stopper 36 is provided on the main body 31 on the side of the horizontal region 302A and the side of the fourth side surface portion 306 than the hinge 35A disposed on the horizontal region 302A side (upper side) of the pair of hinges 35A and 35B, and has a contact surface 36A that contacts the cover 32 on the extension line of the rotation axis of the pair of hinges 35A and 35B.

[0057] In addition, the storage box 3 does not necessarily need to be provided with the stopper member 36 , and the stopper member 36 may not be provided depending on the shape of the lid 32 , the contents of the storage items in the storage box 3 , and the like.

[0058] The cover 32 is rotated in the opening direction, that is, in the front of the vehicle body, and when the area forming the first side surface portion 303 abuts against the abutment surface 36A of the stopper member 36, it stops at this position and cannot be opened further, that is, in the fully open state ( Figure 5 as well as Figure 6 The angle of the cover 32 in the fully open state (the rotation angle of the cover 32 from the closed state) can be appropriately changed according to the position of the abutment surface 36A of the stopper 36 on the first side surface portion 303. However, it is preferred that the cover 32 in the fully open state does not overlap the fuel supply port 4 when viewed from the opening direction of the fuel supply port 4.

[0059] As described above, in the present embodiment, the storage box 3 contains not only the storage items such as the vehicle-mounted tools, but also the fuel supply port 4. For example, when the cover 32 is opened in the near direction relative to the operator who is standing in the right direction of the vehicle body, that is, at a position opposite to the second side surface portion 304 of the storage box 3 and performing the fuel supply operation, the cover 32 is interposed between the operator and the fuel supply port 4, so the fuel supply operation becomes difficult. In addition, for example, when the cover 32 is opened toward the left direction of the vehicle body, that is, toward the machine room 13 side, during the fuel supply operation, the cover 32 is easily rotated in the closing direction due to its own weight, and there is a possibility of collision with the operator and the fuel supply equipment.

[0060] However, in the present embodiment, the cover 32 opens toward the front direction of the vehicle body and stops at a predetermined rotation angle by the stop member 36, thereby shortening the distance between the operator and the fuel supply port 4, making it easier to perform the fuel supply operation, and preventing the cover 32 from naturally rotating in the closing direction during the fuel supply operation, and preventing the cover 32 from colliding with the operator or the fuel supply equipment.

[0061] In addition, in the present embodiment, since the counterweight 14 is arranged immediately behind the storage box 3, the cover 32 is a structure that opens toward the front of the vehicle body. However, depending on the installation position of the storage box 3, etc., it may be a structure that opens toward the rear of the vehicle body. Even in this case, the same functions and effects as those described above can be obtained.

[0062] In addition, as mentioned above, the opening portion 310 of the storage box 3 is formed larger by covering a portion of the upper surface portion 302, the first side portion 303 and the second side portion 304, so that, for example, the oil supply operation is easier than when the opening portion 310 is only formed on the upper surface portion 302 or only formed on the second side portion 304.

[0063] In addition, if Figure 5 as well as Figure 6 As shown, in this embodiment, a gasket 310A is provided at the edge of the opening 310 to prevent sand, dust, etc. from entering the interior of the storage box 3. Thus, when the lid 32 is closed and locked to the main body 31 by the buckle 33, the interior of the storage box 3 becomes a sealed state.

[0064] The buckle 33 and the handle 34 are provided in the inclined region 302B of the upper surface portion 302. Specifically, the buckle 33 is provided over the main body 31 and the cover 32 at the end portion on the side opposite to the first side portion 303 of the inclined region 302B, that is, on the side of the third side portion 305. The handle 34 is provided on the cover 32 at the end portion on the side opposite to the first side portion 303 of the inclined region 302B, that is, on the side of the third side portion 305. The buckle 33 and the handle 34 are arranged at a predetermined interval along the front-rear direction of the vehicle body, and the buckle 33 is located closer to the third side portion 305 than the handle 34.

[0065] like Figure 4 As shown, the buckle 33 is a universal component composed of a plurality of parts and has a rectangular shape. In the buckle 33, a part (not shown) that becomes a locked part is fixed to one end portion (the end portion on the third side portion 305 side) of the cover 32, and another part 330 that becomes a locking part is fixed to a portion of the main body 31 that is exposed by cutting off one end portion of the cover 32. In this embodiment, the buckle 33 is located at a position where the length direction is along the inclination direction of the inclined region 302B.

[0066] like Figure 4 As shown, the handle 34 has a shape that is recessed toward one side for the operator's hand to be inserted. In addition, the portion of the handle 34 exposed on the inclined region 302B is rectangular, and like the buckle 33, is located at a position where its length direction is along the inclined direction of the inclined region 302B.

[0067] In the present embodiment, the insertion port 340 of the handle 34, which is the entrance for the operator to insert the hand, is open toward the rear wheel 11B side and is recessed toward the counterweight 14 side. Therefore, when the operator who performs the oil supply operation standing at a position opposite to the second side surface portion 304 of the storage box 3 opens the closed lid 32, he inserts his hand into the insertion port 340 of the handle 34 from the front of the vehicle body toward the rear, and pulls up (lifts) the handle 34. This hand movement is a natural movement when the operator is right-handed, and the lid 32 is easy to open.

[0068] In addition, the handle 34 is provided at a position away from the pair of hinges 35A and 35B which are the rotation center of the cover 32. Therefore, when opening the closed cover 32, the force applied to the operator's hand can be minimized, so that the cover 32 is easy to open.

[0069] Furthermore, as described above, in the present embodiment, the direction in which the pair of hinges 35A and 35B are inclined is substantially parallel to the direction in which the inclined region 302B of the mounting handle 34 is inclined, so the direction of the force applied to the cover 32 by pulling up (lifting) the cover 32 in the vertical direction relative to the mounting surface (inclined region 302B) of the handle 34 is substantially consistent with the direction in which the cover 32 can rotate. That is, the direction in which the pair of hinges 35A and 35B are inclined is substantially parallel to the direction in which the inclined region 302B of the mounting handle 34 is inclined, so that the direction of the force applied to the cover 32 is easily consistent with the direction in which the cover 32 can rotate, and the cover 32 can be opened with a small force.

[0070] <Relationship between the Range of Mud Splash from the Rear Wheel 11B and the Inclined Region 302B>

[0071] Next, refer to Figure 7 to Figure 9 The relationship between the range of mud splashing from the right rear wheel 11B and the inclined region 302B of the upper surface portion 302 in the storage box 3 will be described.

[0072] Figure 7 This is an explanatory diagram for explaining an example of a range where mud is splashed from the rear wheel 11B and a relationship between a portion in the storage box 3 to which mud is easily attached. Figure 8 1 is a diagram showing an example of the positional relationship between the storage box 3 and the rear wheel 11B when viewed from the rear side of the vehicle body. Fig. 9 It means in Figure 8 The figure shows the positional relationship between the storage box 3 and the rear wheel 11B when the rear wheel 11B is swung to the left.

[0073] For example, when the wheel loader 1 is traveling forward on an unpaved ground, mud is splashed from each wheel 11 toward the upper and rearward direction. Figure 7 As shown, the range of mud splashing from the right rear wheel 11B is an angle θ (mud splashing angle θ) between the contact surface with the vehicle body and the tangent line of the rear wheel 11B intersecting the contact surface.

[0074] Since the storage box 3 is arranged behind the rear wheel 11B, mud easily adheres to the area included in the range of the mud splash angle θ. Figure 7 The sandy land, Figure 8 As shown by the hatched lines in the figure, mud splashed from the rear wheel 11B easily adheres to the bottom surface 301, the first side surface 303 and the second side surface 304. This is because the bottom surface 301, the first side surface 303 and the second side surface 304 all face the direction from which the mud splashes.

[0075] On the other hand, the bottom surface 301, the first side surface 303, and the second side surface 304 are respectively located between the upper surface 302 and the ground contact surface of the right rear wheel 11B in the vertical direction of the vehicle body, so the upper surface 302 does not face the direction from which mud splashes. Therefore, the upper surface 302 is less likely to be attached with mud than the bottom surface 301, the first side surface 303, and the second side surface 304. Therefore, mud splashed from the rear wheel 11B is less likely to be attached to the buckle 33 and the handle 34 provided on the upper surface 302.

[0076] If the buckle 33 and the handle 34 are provided on the second side surface 304, mud splashed from the rear wheel 11B may adhere to the lid 32, dry and solidify, and the lid 32 cannot be opened. However, in the storage box 3, the buckle 33 and the handle 34 are provided on the upper surface 302 where mud splashed from the rear wheel 11B is difficult to adhere to, so it is difficult for the mud to dry and solidify and the lid 32 cannot be opened.

[0077] Moreover, similar to mud splash from the rear wheel 11B, flying stones from the rear wheel 11B are unlikely to hit the upper surface portion 302 , so that damage to the buckle 33 and the handle 34 due to flying stones can be suppressed.

[0078] Furthermore, in this embodiment, if Figure 7 As shown, the buckle 33 and the handle 34 are arranged at the end of the inclined region 302B on the counterweight 14 side away from the rear wheel 11B, and are therefore less susceptible to mud splash from the rear wheel 11B than when they are arranged at the end on the rear wheel 11B side.

[0079] On the other hand, the working site where the wheel loader 1 operates is an environment where sand, dust, etc. are easily blown, so sand, dust, etc. are easily accumulated in the horizontal area 302A of the upper surface portion 302. However, in the inclined area 302B, even if sand, dust, etc. are attached, they are easy to slide downward, so sand, dust, etc. are difficult to accumulate on the buckle 33 and the handle 34.

[0080] Thus, in the storage box 3, since the buckle 33 and the handle 34 are provided in the inclined area 302B of the upper surface portion 302, mud from the rear wheel 11B is difficult to adhere to, and sand, dust, etc. are also difficult to accumulate, so the operability when opening and closing the lid 32 can be improved.

[0081] In addition, as in the present embodiment, the horizontal area 302A of the upper surface of the storage box 3 installed behind the rear wheel 11B is sometimes used as a standing position for an operator when performing maintenance work from above the vehicle body, such as supplying water to the radiator. In the present embodiment, the buckle 33 and the handle 34 are not arranged in the horizontal area 302A as the standing position of the operator, so the operator can perform maintenance work without worrying about obstacles under the feet. Thus, the operability of the maintenance work can be maintained, and the damage of the buckle 33 and the handle 34 caused by the operator stepping on them during the maintenance work can be suppressed.

[0082] Among them, Figure 8 As shown, the inclination angle α of the inclined region 302B relative to the ground contact surface with the vehicle body may be at least greater than 0° (corresponding to the horizontal region 302A) and less than 90° (corresponding to the second side surface 304) (0°<α<90°).

[0083] However, when the inclination angle α is close to 0°, that is, when the gradient tanα of the inclined region 302B is gentle, sand, dust, etc. attached to the inclined region 302B are difficult to fall off. Therefore, in this embodiment, the gradient tanα of the inclined region 302B is set to be greater than 3 / 10, which is the minimum gradient for not accumulating snow on the roof of the house (tanα>3 / 10). That is, the inclination angle α is set to be greater than the angle (=about 16°) that becomes a 3 / 10 gradient.

[0084] In addition, if Fig. 9 As shown, the wheel loader 1 causes the axle to which each wheel 11 is mounted to swing up and down by the unevenness of the ground contact surface of the vehicle body. Therefore, when the tilt angle α is close to 90°, the tilt area 302B may be arranged in the direction of the mud splash of the rear wheel 11B in the swinging state. Therefore, in the present embodiment, the tilt angle α of the tilt area 302B is set to be smaller than the angle obtained by subtracting the swing angle β of the rear wheel 11B from 90° (α<90°-β). For example, when the swing angle β is 10°, the tilt angle α is set to be less than 80°.

[0085] In addition, in this embodiment, the storage box 3 is installed on the right side of the vehicle body. Fig. 9 As shown, the case where the upper part of the right wheel 11 (rear wheel 11B) swings toward the left side (the case where the right rear wheel 11B runs on the raised ground) is considered, but when the storage box 3 is installed on the left side of the vehicle body, the case where the upper part of the left wheel 11 (rear wheel 11B) swings toward the right side (the case where the left rear wheel 11B runs on the raised ground) is considered. In this case, too, the inclination angle α of the inclined area 302B is preferably set to be smaller than the angle obtained by subtracting the swing angle β of the wheel 11 from 90°.

[0086] <Modification>

[0087] Next, refer to Figures 10-12 Modifications 1 to 3 regarding the mounting orientation of the buckle 33 and the handle 34 are described below. Figures 10-12 In the drawings, the same components as those described for the wheel loader 1 according to the embodiment are denoted by the same reference numerals and description thereof will be omitted.

[0088] Fig.10 As a modification example 1, it is indicated Figure 4 FIG. 3 shows different installation orientations of the clip 33. Fig.11 As a modification example 2, it is indicated Figure 4 The handle 34 is installed in different directions. Fig.12 As a modification example 3, it is indicated Figure 4 The figures show other situations in which the installation orientation of the handle 34 is different.

[0089] exist Fig.10 In the illustrated modification 1, the mounting orientation of the clip 33 is different from the mounting orientation of the clip 33 in the embodiment.

[0090] Specifically, the buckle 33 in this modification example 1 is located at a position where the short side direction is along the inclined direction of the inclined area 302B, in other words, the long side direction is along the front-rear direction of the vehicle body. That is, if the installation direction of the buckle 33 in the embodiment is set to the longitudinal direction, the installation direction of the buckle 33 in this modification example 1 becomes the transverse direction.

[0091] Thus, by setting the mounting direction of the buckle 33 to be horizontal, the projection area toward the second side surface portion 304 from the direction of mud splash from the rear wheel 11B becomes smaller than in the vertical direction, so that the buckle 33 is less susceptible to the mud splash from the rear wheel 11B.

[0092] exist Fig.11 In the illustrated modification 2, the mounting orientation of the handle 34 is different from the mounting orientation of the handle 34 in the embodiment.

[0093] Specifically, the handle 34 in this modification 2 is located at a position where the short side direction is along the inclined direction of the inclined region 302B, in other words, the long side direction is along the front-rear direction of the vehicle body. That is, if the installation direction of the handle 34 in the embodiment is set to the longitudinal direction, the installation direction of the handle 34 in this modification 2 is the transverse direction. In addition, the insertion port 340 of the handle 34 in this modification 2 is open toward the horizontal region 302A side and is recessed toward the second side surface portion 304 side.

[0094] Thus, by setting the mounting direction of the handle 34 to be horizontal, the projection area toward the second side surface portion 304 from the direction of mud splash from the rear wheel 11B becomes smaller than in the vertical direction, so that the handle 34 is less susceptible to mud splash from the rear wheel 11B.

[0095] exist Fig.12 In the third modification shown, the mounting orientation of the handle 34 is different from the mounting orientation of the handle 34 in the embodiment and the mounting orientation of the handle 34 in the second modification.

[0096] Specifically, the handle 34 in this modification 3 is located at a position where its length direction is along the inclination direction of the inclined region 302B, similarly to the handle 34 in the embodiment, but the insertion opening 340 is opened toward the counterweight 14 side and is recessed toward the right rear wheel 11B side. That is, the opening direction of the insertion opening 340 of the handle 34 in this modification 3 is opposite to the opening direction of the insertion opening 340 of the handle 34 in the embodiment.

[0097] By setting the opening direction of the insertion opening 340 of the handle 34 to be along the direction in which mud splashes from the rear wheel 11B in this manner, splashed mud is less likely to enter the handle 34 than in the embodiment.

[0098] The above is a description of the embodiments of the present invention. In addition, the present invention is not limited to the above embodiments, and includes various modified examples. For example, the above embodiments are examples that are described in detail in order to easily explain the present invention, and are not necessarily limited to having all the structures described. In addition, a part of the structure of this embodiment can be replaced with the structure of other embodiments, and the structure of other embodiments can be added to the structure of this embodiment. In addition, for a part of the structure of this embodiment, other structures can also be added, deleted, or replaced.

[0099] For example, in the above-described embodiment, the wheel loader 1 is described as an example of a working vehicle, but the present invention is not limited thereto, and any wheeled working vehicle may be used as long as the storage box 3 is mounted on the side of the vehicle body.

[0100] In addition, in the above embodiment, the buckle 33 is used as an example as a locking member for locking the cover 32 to the main body 31, but it is not limited to this. As long as it can lock the cover 32 to the main body 31, its type and means are not particularly limited.

[0101] In the above embodiment, the storage items stored in the storage box 3 include the fuel inlet 4, but are not limited thereto. For example, they may only include vehicle-mounted tools or a reducing agent tank. There is no particular limitation on the contents of the storage items.

[0102] In addition, in the above-mentioned embodiment, the cover 32 is structured to open toward the front of the vehicle body with a pair of hinges 35A and 35B provided on the first side portion 303 as the rotation center, but is not limited to this. The opening and closing direction of the cover 32 can be appropriately changed according to the installation location of the storage box 3, the contents of the storage items, etc.

[0103] In the above embodiment, the storage box 3 includes the handle 34 for opening and closing the lid 32 , but the present invention is not limited thereto, and the handle 34 is not necessarily required as long as the operator can directly hold the lid 32 to open and close it.

[0104] In addition, as shown in the above-mentioned embodiment and each modified example, there is no particular limitation on the mounting direction of the buckle 33 and the handle 34 , and the buckle 33 and the handle 34 may be mounted at least in the inclined region 302B of the upper surface portion 302 .

[0105] Explanation of symbols

[0106] 1—wheel loader (working vehicle), 3—storage box (storage body), 4—fuel supply port, 11, 11A—front wheel (wheel), 11, 11B—rear wheel (wheel), 31—main body, 32—cover, 33—buckle (locking piece), 34—handle, 35A, 35B—hinge, 36—stop component, 36A—abutment surface, 101—front frame (body), 102—rear frame (body), 301—bottom portion, 302—upper surface portion, 302A—horizontal area, 302B—inclined area, 303—first side portion, 304—second side portion, 310—opening portion, 340—insertion port, α—inclination angle, β—swing angle.

Claims

1. A working vehicle comprising: Car body; a plurality of wheels disposed on the vehicle body; and a storage body mounted on a side portion of the vehicle body and behind one of the plurality of wheels, The storage body has: a main body formed with an opening enabling access to the interior; a cover mounted on the main body in an openable and closable manner and covering the opening; and a locking member, which locks the cover to the main body, The working vehicle is characterized in that The storage body is formed into a box shape, and the box shape includes: Bottom face; an upper surface portion, which is arranged opposite to the bottom surface portion; a first side surface portion connecting the bottom surface portion and the upper surface portion on a side opposite to the one wheel; as well as a second side surface portion that connects the bottom surface portion, the upper surface portion, and the first side surface portion from the side at a position behind the first side surface portion, The upper surface portion is composed of the main body and the cover, and includes: a horizontal region parallel to a ground contact surface of the vehicle body; as well as an inclined region which is gradually inclined downward from the horizontal region toward the second side portion, The locking piece is disposed in the inclined region of the upper surface portion.

2. The working vehicle according to claim 1, characterized in that: The storage body also has a handle for opening and closing the cover. The handle is provided at the inclined region of the upper surface portion of the cover.

3. The working vehicle according to claim 2, characterized in that: The locking piece and the handle are respectively formed in a rectangular shape, and the length direction is along the inclined direction of the inclined area.

4. The working vehicle according to claim 1, characterized in that: The storage body is set so that the inclination angle with respect to the ground contact surface in the inclined region of the upper surface portion is larger than an angle forming a 3 / 10 gradient and smaller than an angle obtained by subtracting a pivot angle of the one wheel from 90 degrees.

5. The working vehicle according to claim 1, characterized in that: A fuel supply port for supplying fuel is provided inside the storage body.

6. The working vehicle according to claim 1, characterized in that: The first side portion and the second side portion are respectively constituted by the main body and the cover. The storage body includes a hinge on the first side surface for rotatably fixing the cover relative to the main body. The cover is opened and closed along the front-rear direction of the vehicle body with the hinge as the rotation center. The locking piece is located at an end portion of the inclined region opposite to the first side surface.

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