Box body and engineering vehicle

Abstract

The utility model provides a box body and an engineering vehicle. The box body comprises a first wall and a second wall, the second wall is connected with the first wall, an included angle is formed between the first wall and the second wall, and the first wall and the second wall form an overturning cover; the rotating assembly is arranged on the inner side of the first wall and allows the overturning cover to overturn; the locking assembly is connected to the second wall and can open and close the box body; wherein the rotating assembly comprises an elastic piece, at least part of the locking assembly is located in the box body, and when the locking assembly is opened, the elastic piece drives the overturning cover to automatically overturn. In this way, the overturning cover can be automatically bounced off, convenience is provided for opening of the box body, and meanwhile, at least part of the locking assembly is located in the box body, so that collision and artificial intentional damage to the lock can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery, and in particular to a box body and an engineering vehicle. Background Art

[0002] The working environment of engineering vehicles is relatively complex. The urea tanks of engineering vehicles generally use low-density ethylene corrosion-resistant materials. Under harsh working conditions, the urea tanks are damaged due to insufficient material strength and their service life is reduced. Therefore, in the prior art, the urea tanks are placed in a box with a protective function. The box uses an external lock that is easily collided or intentionally damaged, and the opening and closing of the box is very inconvenient. Utility Model Content

[0003] In view of this, the present application provides a box body, which can not only avoid damage to the lock caused by collision and intentional human error, but also can be opened automatically. In addition, the present application also provides an engineering vehicle including the above box body.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] A box body, comprising:

[0006] First wall;

[0007] A second wall connected to the first wall and forming an angle, wherein the first wall and the second wall form a flip cover;

[0008] A rotating assembly, disposed on the inner side of the first wall and allowing the flip cover to flip;

[0009] A locking assembly connected to the second wall and capable of opening and closing the box;

[0010] Wherein, the rotating assembly includes an elastic member, and at least a part of the locking assembly is located in the box body. When the locking assembly is opened, the elastic member drives the flip cover to flip automatically.

[0011] Optionally, in the above-mentioned box, the locking assembly includes a lock body assembly and a locking fitting, the inner side of the second wall is provided with a sleeve extending toward the interior of the box, the lock body assembly includes a lock body and a clip connected to the lock body, the lock body is inserted into the sleeve, the clip is provided on the lock body and at one end away from the second wall, a slot is provided on the clip, the slot is adapted to the locking fitting, and the locking fitting is clipped in the slot to achieve the locking of the flip cover.

[0012] Optionally, the above-mentioned box body further includes a surrounding wall assembly, which is combined with the first wall and the second wall to form the box body, and the locking fitting includes a handle shaft, a nut and a fixed seat connected to the surrounding wall assembly, and the fixed seat is provided with a threaded hole, and the handle shaft is threaded into the threaded hole. The handle shaft passes through the nut and the threaded hole in sequence, so that the handle shaft is locked on the fixed seat.

[0013] Optionally, in the above-mentioned box body, the rotating assembly includes a first rotating shaft and a first rotating shaft fixing seat, the first rotating shaft fixing seat is arranged on the inner side of the first wall, the first rotating shaft passes through the first rotating shaft fixing seat, and a wear-resistant part is arranged between the first rotating shaft fixing seat and the first rotating shaft to reduce the wear between the first rotating shaft fixing seat and the first rotating shaft.

[0014] Optionally, the above-mentioned box body further includes a surrounding wall assembly, which is combined with the first wall and the second wall to form the box body, and the rotating assembly also includes a second rotating shaft fixing seat and a limiting member connected to the second rotating shaft fixing seat, the first rotating shaft passes through the second rotating shaft fixing seat, and the second rotating shaft fixing seat is located on both sides of the first rotating shaft fixing seat, the limiting member is connected to the surrounding wall assembly, and the limiting member includes a slope, and the slope can limit the rotation angle of the flip cover.

[0015] Optionally, in the above-mentioned box, the handle shaft includes a shaft body and a shaft end connected to the shaft body, the shaft end gradually expands relative to the shaft body and forms an annular cone surface, and the annular cone surface is adapted to the slot to lock the handle shaft in the slot.

[0016] Optionally, a protective component is further provided in the above-mentioned box body, and the keyhole of the locking assembly is located on the outside of the second wall, and the protective component can cover the keyhole.

[0017] Optionally, in the above-mentioned box, the protective assembly includes a protective plate and a rotating assembly capable of rotating the protective plate, the rotating assembly is arranged on the second wall, and the protective plate can cover the keyhole.

[0018] Optionally, in the above-mentioned box, the rotating assembly includes a second rotating shaft, a spring and a baffle extending into the interior of the box, one end of the second rotating shaft is connected to the protective plate, and the other end of the second rotating shaft is provided with a baffle, the second rotating shaft passes through the spring, and the spring is located between the baffle and the second wall to strengthen the coverage of the keyhole by the protective plate.

[0019] An engineering vehicle comprises the box body described in any one of the above items.

[0020] The present application provides a box body, comprising a first wall, a second wall, a rotating assembly and a locking assembly, wherein the first wall and the second wall are connected and form an angle, the first wall and the second wall constitute a flip cover of the box body, the rotating assembly is arranged on the inner side of the first wall, allowing the flip cover to be flipped by rotation, the locking assembly is arranged on the second wall, and can open and close the box body, wherein the rotating assembly comprises an elastic member, and at least a part of the locking assembly is located inside the box body, and by opening the locking assembly, the elastic member can drive the flip cover to automatically flip, thereby the flip cover can automatically pop open, providing convenience for opening the box body, and at the same time, by at least a part of the locking assembly being located inside the box body, collision and intentional damage to the lock can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 A top view of a box provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the structure of a box body AA provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of the structure of a box BB provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the structure of a box provided in an embodiment of the present application;

[0026] Figure 5 An enlarged view of the locking assembly provided in an embodiment of the present application;

[0027] Figure 6 for Figure 5 Enlarged view of the middle C direction;

[0028] Figure 7 An enlarged view of the protection component provided in the embodiment of the present application;

[0029] Figure 8 An enlarged view of another protective component provided in an embodiment of the present application.

[0030] exist Figure 1-Figure 8 middle:

[0031] 1. First wall; 2. Second wall; 3. Rotating assembly; 4. Locking assembly; 5. Bushing; 6. Wall assembly; 7. Protective assembly; 8. Retaining ring;

[0032] 31. elastic member; 32. first rotating shaft; 33. first rotating shaft fixing seat; 34. wear-resistant member; 35. second rotating shaft fixing seat; 36. limiting member; 37. first fixing member; 38. second fixing member;

[0033] 41. Lock body assembly; 411. Lock body; 412. Card connector; 4121. Card slot; 413. Key

[0034] 42, locking fitting; 421, handle shaft; 4211, shaft body; 4212, shaft end; 422, nut; 423, fixing seat;

[0035] 43. First gasket;

[0036] 71. Protective plate; 72. Rotating assembly; 721. Second rotating shaft; 722. Spring; 723. Baffle; 73. Second gasket; 74. Fixed sleeve. DETAILED DESCRIPTION

[0037] The present application provides a box body, which can not only avoid damage to the lock caused by collision and intentional human error, but also can be opened automatically. In addition, the present application also provides an engineering vehicle including the box body.

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] like Figure 1-Figure 8 As shown, an embodiment of the present application provides a box body, including a first wall 1, a second wall 2, a rotating assembly 3 and a locking assembly 4, the first wall 1 and the second wall 2 are connected and form an angle, the first wall 1 and the second wall 2 constitute a flip cover of the box body, the rotating assembly 3 is arranged on the inner side of the first wall 1, allowing the flip cover to be flipped by rotation, the locking assembly 4 is arranged on the second wall 2, and can open and close the box body, wherein the rotating assembly 3 includes an elastic member 31, and the locking assembly 4 is at least partially located inside the box body. By opening the locking assembly 4, the elastic member 31 can drive the flip cover to automatically flip, thereby, the flip cover can automatically pop open, which provides convenience for opening the box body, and at the same time, by at least partially positioning the locking assembly 4 inside the box body, collision and intentional damage to the lock can be avoided.

[0040] It should be noted that the elastic member 31 is a torsion spring; the box body can allow the material box to enter so as to protect the material box, wherein the material box can be but is not limited to a urea box.

[0041] It should also be noted that, in a certain example, the first wall 1 is the top wall of the box body, and the second wall 2 is the side wall connected to the top wall.

[0042] Furthermore, the locking assembly 4 includes a lock body assembly 41 and a locking fitting 42. The inner side of the second wall 2 is provided with a sleeve 5 extending toward the interior of the box body. The lock body assembly 41 includes a lock body 411 and a snap-in piece 412 connected to the lock body 411. The lock body 411 is inserted into the sleeve 5. The snap-in piece 412 is provided at one end of the lock body 411 away from the second wall 2. A snap-in piece 412 is provided on the snap-in piece 412. The snap-in piece 412 is adapted to the locking fitting 42. The locking fitting 42 is snapped in the slot 4121 to achieve the locking of the flip cover. The lock hole of the lock body assembly 41 is located on the outside of the second wall 2 to facilitate the opening of the box. The lock body 411 is inserted into the sleeve 5, and the sleeve 5 is arranged on the inner side of the second wall 2 and extends toward the inside of the box. The snap-fitting part 412 is arranged on the lock body 411 and away from the second wall 2. The snap-fitting part 412 is provided with a slot 4121. The locking of the box can be achieved by locking the locking fitting 42 in the slot 4121. It can be seen that the locking assembly 4 is built into the box, thereby avoiding human damage and collision damage to the lock body assembly 41, extending the service life of the locking assembly 4, and at the same time, improving the aesthetics of the box.

[0043] It should be noted that the clamping member 412 is a locking hook.

[0044] It should also be noted that when the lock body 411 passes through the second wall 2 , there may be a gap in the connection between the lock body 411 and the second wall 2 , and for this reason, a first gasket 43 is provided between the lock body 411 and the second wall 2 to enhance the sealing.

[0045] Furthermore, Figure 5As shown, it also includes a wall assembly 6, which is combined with the first wall 1 and the second wall 2 to form a box body. The locking fitting 42 includes a handle shaft 421, a nut 422 and a fixing seat 423 connected to the wall assembly 6. A threaded hole is opened on the fixing seat 423, and the handle shaft 421 is screwed into the threaded hole. The handle shaft 421 passes through the nut 422 and the threaded hole in sequence, so that the handle shaft 421 is locked on the fixing seat 423. The surrounding wall component 6 is fixedly connected to the fixing seat 423 and is used to support the fixing seat 423. A threaded hole is opened on the fixing seat 423. The handle shaft 421 is screwed into the threaded hole, and the handle shaft 421 can be matched and connected with the card slot 4121 to realize the locking of the lock body component 41 and the locking matching part 42. The handle shaft 421 passes through the nut 422 and the threaded hole in sequence, and the handle shaft 421 can be locked on the fixing seat 423. The distance that the handle shaft 421 extends into the threaded hole can be controlled by the nut 422. In actual use, after the handle shaft 421 is matched and connected with the card slot 4121 and locked, Especially when the box body is set on an engineering vehicle, the driving environment of the engineering vehicle is relatively harsh and bumpy, and there will be wear at the connection between the handle shaft 421 and the slot 4121, which will cause the handle shaft 421 and the slot 4121 to be not firmly fixed. At this time, by controlling the distance that the handle shaft 421 extends into the threaded hole, the position of the unworn handle shaft 421 is re-matched with the slot 4121 to increase the firmness of the connection between the handle shaft 421 and the slot 4121, thereby achieving reliable locking of the box body and protecting the material box in the box body. It can be seen that the locking fitting 42 has high versatility and practicality.

[0046] In other optional embodiments, the locking fitting 42 may only include a handle shaft 421, and the handle shaft 421 is fixedly connected to the surrounding wall assembly 6. The handle shaft 421 is matched and connected with the slot 4121 and locked to achieve locking of the box.

[0047] In some optional embodiments, such as Figure 1As shown, the rotating assembly 3 includes a first rotating shaft 32 and a first rotating shaft fixing seat 33. The first rotating shaft fixing seat 33 is arranged on the inner side of the first wall 1. The first rotating shaft 32 passes through the first rotating shaft fixing seat 33. A wear-resistant part 34 is arranged between the first rotating shaft fixing seat 33 and the first rotating shaft 32 to reduce the wear between the first rotating shaft fixing seat 33 and the first rotating shaft 32. The first rotating shaft fixing seat 33 is welded on the inner side of the first wall 1. The first rotating shaft 32 passes through the first rotating shaft fixing seat 33 and can rotate relative to the first rotating shaft fixing seat 33, so that the flip cover can flip. At the same time, a wear-resistant part 34 is arranged between the first rotating shaft fixing seat 33 and the first rotating shaft 32. It should be noted that the wear-resistant part 34 can be but not limited to a bushing, so as to reduce the wear between the first rotating shaft 32 and the first rotating shaft fixing seat 33, increase the service life of the first rotating shaft 32, and reduce the noise of the first rotating shaft 32. In addition, the bushing also has a sealing function, and the material can be but not limited to alloy material.

[0048] In other optional embodiments, the rotating assembly 3 may also be a structure similar to a hinge.

[0049] Further, such as Figure 1 As shown, the invention also includes a wall assembly 6, which is enclosed with the first wall 1 and the second wall 2 to form a box body, and the rotating assembly 3 also includes a second rotating shaft fixing seat 35 and a stopper 36 connected to the second rotating shaft fixing seat 35. The first rotating shaft 32 passes through the second rotating shaft fixing seat 35, and the second rotating shaft fixing seat 35 is located on both sides of the first rotating shaft fixing seat 33. The stopper 36 is connected to the wall assembly 6, and the stopper 36 includes an inclined surface, which can limit the rotation angle of the flip cover. The first rotating shaft 32 passes through the first rotating shaft fixing seat 33 and the second rotating shaft fixing seat 35 at the same time, and the second rotating shaft fixing seat 35 is located on both sides of the first rotating shaft fixing seat 33. When the flip cover is flipped, the first wall 1 surface can be coplanar with the inclined surface of the stopper 36. In this way, the flip angle of the flip cover is limited, for example, the flip angle of the flip cover is 135° or 150°, etc. The flip angle of the flip cover must not only meet the requirements of not colliding with the wall assembly 6 and avoiding paint falling off the box body, but also meet the requirements of easy placement of the material box. In addition, a retaining ring 8 is provided at one end of the first rotating shaft fixing seat 33 , and the other end thereof abuts against the second rotating shaft fixing seat 35 , so as to limit the axial displacement of the first rotating shaft 32 .

[0050] It should be noted that, in a certain example, one end of the elastic member 31, i.e., the torsion spring, is fixedly connected to the first wall 1. Specifically, a first fixing member 37 is fixedly provided on the inner side of the first wall 1 for fixing one end of the torsion spring. The other end of the elastic member 31, i.e., the torsion spring, is fixedly connected to the limiting member 36. Specifically, a second fixing member 38 is provided on a side surface of the limiting member 36 facing the first wall 1 for fixing the other end of the torsion spring. In this way, the two ends of the elastic member 31, i.e., the torsion spring, are fixed.

[0051] In some optional embodiments, such as Figure 5 As shown, the handle shaft 421 includes a shaft body 4211 and a shaft end 4212 connected to the shaft body 4211, the shaft end 4212 gradually expands relative to the shaft body 4211 and forms an annular cone, and the annular cone is adapted to the slot 4121 to lock the handle shaft 421 in the slot 4121. It should be noted that the shaft body 4211 is cylindrical, the shaft end 4212 is conical, the slot 4121 and the annular cone (i.e., the shaft end 4212) match in shape and size, and the annular cone is locked more firmly with the slot 4121, thereby avoiding noise generated when the box vibrates.

[0052] More specifically, when locking, the key 413 is inserted into the keyhole and rotated, so that the slot 4121 is close to the shaft end 4212 so that the shaft end 4212 is located in the slot 4121. At the same time, the lock core can also drive the slot 4121 to move toward the second wall 2 until the slot 4121 and the shaft end 4212 are locked, that is, the slot 4121 is locked at a certain position of the shaft end 4212, which may be but is not limited to one-third of the shaft end 4212, the middle position or the end position. However, due to the manufacturing process of the box, after the flip cover is locked as described above, there is still a gap between the second wall 2 and the surrounding wall assembly 6 adjacent to the second wall 2, rather than a tight fit, which affects the protective performance of the box. To this end, the nut 422 located on the shaft body 4211 can be adjusted. Specifically, the nut 422 can be rotated to release the fastening effect of the nut 422 on the handle shaft 421, so that the shaft body 4211 drives the shaft end 4212 to move axially, thereby eliminating the gap between the second wall 2 and the surrounding wall assembly 6 adjacent to the second wall 2 after the flip cover is locked, thereby improving the protectiveness of the box.

[0053] In other optional embodiments, the handle shaft 421 may also only include the shaft body 4211, and the shaft body 4211 is conical in shape, that is, the shaft body 4211 gradually expands along the axial direction of the shaft body 4211, and the shaft body 4211 is adapted to the slot 4121 and can be locked in the slot 4121, thereby achieving reliable locking of the box.

[0054] In some optional embodiments, a protective component 7 is further provided, and the key hole of the locking assembly 4 is located outside the second wall 2, and the protective component 7 can cover the key hole. The working environment of the engineering vehicle is complex, especially dusty, and the protective component 7 can prevent the key hole from being blocked by dust and other impurities, thereby preventing the lock body from being damaged.

[0055] Further, such as Figure 7As shown, the protection assembly 7 includes a protection plate 71 and a rotating assembly 72 capable of rotating the protection plate 71. The rotating assembly 72 is arranged on the second wall 2, and the protection plate 71 can cover the keyhole. The protection plate 71 is rotatably connected to the rotating assembly 72. The protection plate 71 covers and does not cover the keyhole through the rotation of the rotating assembly 72. When the box body does not need to be opened, the protection plate 71 covers the keyhole to protect the keyhole and prevent dust and other impurities from entering. When the box body needs to be opened, the protection plate 71 rotates under the drive of the rotating assembly 72 to leave the position of the keyhole, and the box body is opened by inserting the key 413 into the keyhole.

[0056] In other optional embodiments, such as Figure 8 As shown, the protective component 7 can also be a covering member that directly covers the keyhole. The covering member includes a covering body and a covering plate detachably connected to the covering body. The covering plate is used to cover the keyhole, and the covering plate can be removed when the box needs to be opened.

[0057] In other optional embodiments, the protection component 7 may also be a folding plate disposed on the second wall 2 and parallel to the second wall 2, and the keyhole can be exposed by folding the folding plate to open the box.

[0058] Furthermore, Figure 7 As shown, the rotating assembly 72 includes a second rotating shaft 721 extending into the box body, a spring 722 and a baffle 723, one end of the second rotating shaft 721 is connected to the protective plate 71, the other end of the second rotating shaft 721 is provided with a baffle 723, the second rotating shaft 721 is penetrated by a spring 722, and the spring 722 is located between the baffle 723 and the second wall 2 to strengthen the coverage of the keyhole by the protective plate 71. The second rotating shaft 721 passes through the second wall 2 and extends into the box body, one end of the second rotating shaft 721 is connected to the protective plate 71, the other end of the second rotating shaft 721 is located in the box body and provided with a baffle 723, and a spring 722 is provided between the baffle 723 and the second wall 2, so that the spring 722 can be displaced in the axial direction of the second rotating shaft 721, so that the baffle 723 is better covered and abutted against the surface of the keyhole by the elasticity of the spring 722, thereby improving the protection of the protective plate 71. In addition, a fixing sleeve 74 is provided at the connection between the outer peripheral wall of the second rotating shaft 721 and the second wall 2 to strengthen the firmness of the connection between the second rotating shaft 721 and the second wall 2; a second gasket 73 is provided between the baffle 723 and the spring 722 to buffer and position the spring 722.

[0059] In other optional embodiments, based on the composition of the above-mentioned protective assembly 7 , the spring 722 is arranged between the outer side of the second wall 2 and the protective plate 71 .

[0060] In addition, the embodiment of the present application further provides an engineering vehicle, which includes the above-mentioned box body. For the beneficial effects of the engineering vehicle brought by the above-mentioned box body, please refer to the above-mentioned description of the box body, which will not be repeated here.

[0061] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0062] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0063] It should also be noted that, in the device, equipment and casing of the present application, each component or each step can be decomposed and / or reassembled. These decompositions and / or recombinations should be regarded as equivalent schemes of the present application. The above description of the disclosed aspects is provided so that any technician in the field can make or use the present application. Various modifications to these aspects are very obvious to those skilled in the art, and the general principles defined here can be applied to other aspects without departing from the scope of the present application. Therefore, the application is not intended to be limited to the aspects shown here, but according to the widest range consistent with the principles disclosed here and novel features.

[0064] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0065] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A box, characterized in that: include: First wall; A second wall connected to the first wall and forming an angle, wherein the first wall and the second wall form a flip cover; A rotating assembly, disposed on the inner side of the first wall and allowing the flip cover to flip; A locking assembly connected to the second wall and capable of opening and closing the box; Wherein, the rotating assembly includes an elastic member, and at least a part of the locking assembly is located in the box body. When the locking assembly is opened, the elastic member drives the flip cover to flip automatically.

2. The box according to claim 1, characterized in that: The locking assembly includes a lock body assembly and a locking fitting, the inner side of the second wall is provided with a sleeve extending toward the interior of the box, the lock body assembly includes a lock body and a clamping piece connected to the lock body, the lock body is inserted into the sleeve, the clamping piece is provided at one end of the lock body away from the second wall, a slot is provided on the clamping piece, the slot is adapted to the locking fitting, and the locking fitting is clamped in the slot to achieve the locking of the flip cover.

3. The box according to claim 2, characterized in that: It also includes a surrounding wall assembly, which is combined with the first wall and the second wall to form the box body. The locking fitting includes a handle shaft, a nut and a fixing seat connected to the surrounding wall assembly. The fixing seat is provided with a threaded hole, in which the handle shaft is threaded. The handle shaft passes through the nut and the threaded hole in sequence, so that the handle shaft is locked on the fixing seat.

4. The box according to claim 1, characterized in that: The rotating assembly includes a first rotating shaft and a first rotating shaft fixing seat, the first rotating shaft fixing seat is arranged on the inner side of the first wall, the first rotating shaft passes through the first rotating shaft fixing seat, and a wear-resistant part is arranged between the first rotating shaft fixing seat and the first rotating shaft to reduce the wear between the first rotating shaft fixing seat and the first rotating shaft.

5. The box according to claim 4, characterized in that: It also includes a surrounding wall assembly, which is combined with the first wall and the second wall to form the box body. The rotating assembly also includes a second rotating shaft fixing seat and a limiting member connected to the second rotating shaft fixing seat. The first rotating shaft passes through the second rotating shaft fixing seat, and the second rotating shaft fixing seat is located on both sides of the first rotating shaft fixing seat. The limiting member is connected to the surrounding wall assembly, and the limiting member includes an inclined surface, which can limit the rotation angle of the flip cover.

6. The box according to claim 3, characterized in that: The handle shaft comprises a shaft body and a shaft end connected to the shaft body, the shaft end gradually expands relative to the shaft body and forms an annular cone surface, and the annular cone surface is adapted to the slot to lock the handle shaft in the slot.

7. The box according to claim 1, characterized in that: A protection component is also provided. The key hole of the locking assembly is located outside the second wall, and the protection component can cover the key hole.

8. The box according to claim 7, characterized in that: The protection assembly includes a protection plate and a rotating assembly capable of rotating the protection plate, wherein the rotating assembly is arranged on the second wall, and the protection plate can cover the key hole.

9. The box according to claim 8, characterized in that: The rotating assembly includes a second rotating shaft, a spring and a baffle extending into the interior of the box body, one end of the second rotating shaft is connected to the protective plate, the other end of the second rotating shaft is provided with a baffle, the second rotating shaft passes through the spring, and the spring is located between the baffle and the second wall to strengthen the coverage of the keyhole by the protective plate.

10. An engineering vehicle, characterized in that: A box comprising the housing according to any one of claims 1 to 9.

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