Railway vehicle ceiling structure convenient to overhaul and railway vehicle
By designing an adjustable maintenance port structure in the roof structure of the rail vehicle, and using the clasping, rotation and disassembly functions of the first hook and the second hook, the problem of insufficient opening angle of the maintenance port in the prior art is solved, and a larger maintenance space and higher maintenance convenience are achieved.
Patent Information
- Application Number
- CN202422391232.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The maintenance opening angle of the existing rail vehicle ceiling structure is insufficient, and the maintenance space is small, making it inconvenient to repair or replace the lighting products.
A structure including a ceiling body, a first hook, an access plate and a second hook are designed. The first hook and the second hook adjust the opening angle of the access port by clasping, rotating and disassembly, ensuring that the access plate can fully expose the access port.
By adjusting the opening angle of the maintenance port, the maintenance space is expanded and the convenience of repairing or replacing lighting products is improved.
Smart Images
Figure CN223030981U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wall waterproofing, in particular to a ceiling structure of a rail vehicle and a rail vehicle that are convenient for maintenance. Background Art
[0002] Due to the use characteristics of rail vehicles, there are specific requirements for the service life and maintenance cycle of rail products. In order to ensure the reliability of the product performance during the long-term operation of rail vehicles, the regular maintenance of rail products is particularly important.
[0003] As an internal lighting product in rail passenger cars, its main function is to provide normal lighting for passengers, and its importance is self-evident. With the development of rail vehicles, the requirements for the overall effect and riding environment of passenger cars are getting higher and higher. For the assembly of various vehicle components, not only reliability and safety are required, but also strict requirements are imposed on the aesthetic appearance. Therefore, screws installed normally are not allowed to be exposed.
[0004] In the prior art, as Figure 1 and Figure 2 shown, after installing the lighting product on the ceiling body 100, a maintenance opening 200 is reserved, and a maintenance panel 300 is installed at the maintenance opening 200. By opening and closing the maintenance panel 300, the screws 600 supporting the lighting product are exposed and hidden, so as to repair or replace the lighting product. However, in the prior art, the connection structure between the maintenance panel 300 and the ceiling body 100 is a rotary hinge structure 400, which enables the maintenance panel to only rotate, and there are other components 500 at the corners blocking the rotation path of the maintenance panel (as Figure 2 shown), resulting in insufficient angle when the maintenance opening is opened and a small maintenance space, which is not convenient for repairing or replacing the lighting product.
[0005] Therefore, the prior art still needs to be improved and developed. Summary of the Utility Model
[0006] The technical problem to be solved by the utility model is to provide a ceiling structure of a rail vehicle and a rail vehicle that are convenient for maintenance, aiming to expand the maintenance space and improve the maintenance convenience in view of the above-mentioned defects of the prior art.
[0007] The technical solution adopted by the utility model to solve the technical problem is as follows:
[0008] A ceiling structure of a rail vehicle that is convenient for maintenance, which includes a ceiling body, and further includes:
[0009] A first hook, which is arranged on the ceiling body and close to the maintenance opening of the ceiling body;
[0010] A maintenance panel, which is used to block the maintenance opening;
[0011] A second hook, which is arranged on the inspection plate and is used for detachably buckling with the first hook; the second hook can rotate relative to the first hook to open and close the inspection opening.
[0012] The overhead structure of the rail vehicle facilitating maintenance, wherein the first hook includes:
[0013] A first U-shaped hook body;
[0014] A first connecting member, one end of which is connected to the first U-shaped hook body, and the other end is detachably connected to the overhead body.
[0015] The overhead structure of the rail vehicle facilitating maintenance, wherein the second hook includes:
[0016] A second U-shaped hook body;
[0017] A second connecting member, one end of which is connected to the second U-shaped hook body, and the other end is detachably connected to the inspection plate;
[0018] When the first hook and the second hook are buckled, the openings of the first U-shaped hook body and the second U-shaped hook body are arranged facing each other, and the first U-shaped hook body and the second U-shaped hook body are engaged with each other.
[0019] The overhead structure of the rail vehicle facilitating maintenance, which further includes:
[0020] A limiting plate, one end of which is a free end, and the other end is connected to a side wall of the first U-shaped hook body and is arranged opposite to the opening of the first U-shaped hook body; the limiting plate and the first U-shaped hook body enclose an accommodating space with an opening, and the accommodating space is used for accommodating the second U-shaped hook body.
[0021] The overhead structure of the rail vehicle facilitating maintenance, wherein when the first hook and the second hook are buckled, the side walls of the second U-shaped hook body placed in the accommodating space are respectively in contact with the bottom wall and the two side walls of the first U-shaped hook body.
[0022] The overhead structure of the rail vehicle facilitating maintenance, wherein the second hook further includes:
[0023] A convex portion, which is arranged on the second U-shaped hook body and is located outside the bottom wall of the second U-shaped hook body;
[0024] When the first hook and the second hook are buckled, the convex portion is located in the accommodating space and abuts against the limiting plate.
[0025] The overhead structure of the rail vehicle facilitating maintenance, which further includes:
[0026] The elastic shock pad is sleeved on the convex part and is used to abut against the limiting plate when the first hook is buckled with the second hook.
[0027] In the track vehicle ceiling structure facilitating maintenance, when the first hook is buckled with the second hook, the projection of the free end of the limiting plate onto the ground is located between the projection of the side wall of the second U-shaped hook body outside the accommodation space onto the ground and the projection of the convex part onto the ground.
[0028] The track vehicle ceiling structure facilitating maintenance further includes:
[0029] A lock, arranged at one end of the maintenance plate away from the second hook;
[0030] An assembly plate, arranged on the ceiling body and partially extending to the maintenance opening;
[0031] A lock position, arranged on the assembly plate and used for cooperating with the lock.
[0032] A track vehicle includes the track vehicle ceiling structure facilitating maintenance as described in any one of the above.
[0033] Beneficial effects: In this application, the closing and the adjustment of the opening angle of the maintenance opening are realized through the buckling, rotation and disassembly of the first hook and the second hook; meanwhile, when the second hook is removed from the first hook, the maintenance plate can move away from the maintenance opening, and the maintenance opening can be completely exposed, thereby expanding the maintenance space and improving the convenience of repairing or replacing lighting products. Description of the Drawings
[0034] Figure 1 is a reference diagram of the use state when the maintenance plate is closed in the prior art;
[0035] Figure 2 is a reference diagram of the use state when the maintenance plate is opened in the prior art;
[0036] Figure 3 is a reference diagram of the use state of the track vehicle ceiling structure facilitating maintenance when the first hook is buckled with the second hook and covers the maintenance opening;
[0037] Figure 4 is a reference diagram of the use state of the track vehicle ceiling structure facilitating maintenance when the maintenance plate is rotated to open the maintenance opening;
[0038] Figure 5 is Figure 4 a partial enlarged schematic diagram at A in
[0039] Figure 6 This is a reference diagram of the usage state of the overhead structure of a rail vehicle facilitating maintenance when the second hook described in the present utility model is removed from the first hook to disassemble the inspection plate. Detailed implementation manners
[0040] The following will illustrate the implementation manners of the present utility model with reference to the drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be understood that the preferred embodiments are only for illustrating the present utility model, rather than for limiting the protection scope of the present utility model.
[0041] It should be noted that the diagrams provided in the following embodiments only schematically illustrate the basic concept of the present utility model. Therefore, only the components related to the present utility model are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the layout type of its components may also be more complex.
[0042] The present utility model provides an overhead structure of a rail vehicle facilitating maintenance, as Figure 3 and Figure 6 shown. The overhead structure of the rail vehicle facilitating maintenance includes an overhead body 1, a first hook 2, an inspection plate 3, and a second hook 4. The first hook 2 is disposed on the overhead body 1 and close to the inspection opening 11 of the overhead body 1. The inspection plate 3 is used to block the inspection opening 11. The second hook 4 is disposed on the inspection plate 3 and is used for detachably buckling with the first hook 2. The second hook 4 can rotate relative to the first hook 2 to open and close the inspection opening 11.
[0043] Specifically, the first hook 2 is connected to the overhead body 1, and the second hook 4 is connected to the inspection plate 3. Moreover, the first hook 2 and the second hook 4 can be buckled, rotated relative to each other, and detached. Therefore, when the first hook 2 and the second hook 4 are in a buckled state, the inspection plate 3 can block the inspection opening 11, and at this time, it is impossible to perform maintenance or replacement on the lighting product through the inspection opening 11. When the inspection plate 3 is rotated (as Figure 4 and Figure 5 shown), the inspection opening 11 can be opened. When the inspection opening 11 is in an open state, the second hook 4 is removed from the first hook 2 (as Figure 6 shown), and the inspection opening 11 can be completely exposed, thereby expanding the maintenance space.
[0044] It can be seen that the assembly of the inspection plate 3 on the ceiling body 1 in this application is achieved through the cooperation of the first hook 2 and the second hook 4: the inspection opening 11 can be completely closed by the engagement of the first hook 2 and the second hook 4; the inspection opening 11 can also be opened by rotating the inspection plate 3 so that the second hook 4 rotates relative to the first hook 2 (at this time, the inspection opening 11 is not completely exposed, and the rotation path of the inspection plate 3 will still be blocked by other parts in the corner); furthermore, the inspection plate 3 can be removed from the inspection opening 11 by disassembling the second hook 4 from the first hook 2, achieving the complete exposure of the inspection opening 11.
[0045] Therefore, in this application, the closing and the adjustment of the opening angle of the inspection opening 11 are achieved through the engagement, rotation, and disassembly of the first hook 2 and the second hook 4; at the same time, when the second hook 4 is removed from the first hook 2, the inspection plate 3 can be separated from the inspection opening 11, and the inspection opening 11 can be completely exposed, thereby expanding the inspection and maintenance space and improving the convenience of repairing or replacing the lighting product.
[0046] As Figure 5 shown, the first hook 2 includes a first U-shaped hook body 21 and a first connecting member 22; one end of the first connecting member 22 is connected to the first U-shaped hook body 21, and the other end of the first connecting member 22 is detachably connected to the ceiling body 1.
[0047] Specifically, the first connecting member 22 is an L-shaped connecting member. One end of the first connecting member 22 is detachably connected to the ceiling body 1 through a threaded connector such as a screw or a bolt, and the other end of the first connecting member 22 is connected to a side wall of the first U-shaped hook body 21, thereby realizing the positioning of the first U-shaped hook body 21 on the ceiling body 1.
[0048] The opening of the first U-shaped hook body 21 is arranged upward, and among the two side walls of the first U-shaped hook body 21, one side wall is connected to the first connecting member 22, and the other side wall is arranged suspended, so as to facilitate the engagement, rotation, and disassembly of the second hook 4.
[0049] As Figure 5 shown, the second hook 4 includes a second U-shaped hook body 41 and a second connecting member 42; one end of the second connecting member 42 is connected to the second U-shaped hook body 41, and the other end of the second connecting member 42 is detachably connected to the inspection plate 3; when the first hook 2 and the second hook 4 are engaged, the openings of the first U-shaped hook body 21 and the second U-shaped hook body 41 are arranged facing each other, and the first U-shaped hook body 21 and the second U-shaped hook body 41 are engaged with each other.
[0050] Specifically, the second connecting member 42 is an L-shaped connecting member. One end of the second connecting member 42 is detachably connected to the inspection plate 3 through a threaded connecting member such as a screw or a bolt, and the other end of the second connecting member 42 is connected to a side wall of the second U-shaped hook body 41, thereby realizing the positioning of the second hook 4 on the inspection plate 3.
[0051] If the second connecting member 42 and the second U-shaped hook body 41 are located inside the inspection plate 3, after the second hook 4 is engaged with the first hook 2, the second hook 4 can be blocked by the inspection plate 3, so as to improve the overall appearance flatness and aesthetics of the track vehicle ceiling structure convenient for maintenance.
[0052] When the first hook 2 is engaged with the second hook 4 (as Figure 3 shown), the openings of the first U-shaped hook body 21 and the second U-shaped hook body 41 are arranged facing each other, and the side wall of the first U-shaped hook body 21 that is not connected to the first connecting member 22 is located inside the second U-shaped hook body 41; similarly, the side wall of the second U-shaped hook body 41 that is not connected to the second connecting member 42 is located inside the first U-shaped hook body 21, realizing the mutual engagement between the first U-shaped hook body 21 and the second U-shaped hook body 41.
[0053] Since the second U-shaped hook body 41 also has an opening, by rotating the inspection plate 3, the second U-shaped hook body 41 rotates relative to the first U-shaped hook body 21, so that the volume of the second U-shaped hook body 41 engaged inside the first U-shaped hook body 21 gradually decreases until the second U-shaped hook body 41 can be completely taken out from the opening of the first U-shaped hook body 21, and the disassembly of the second U-shaped hook body 41 and the first U-shaped hook body 21 can be realized.
[0054] Taking the right side of the first hook 2 close to the inspection opening 11 as an example, the second hook 4 and the inspection plate 3 are arranged vertically, and the opening of the second U-shaped hook body 41 is arranged downward; then the side wall of the second U-shaped hook body 41 that is not connected to the second connecting member 42 is inserted into the first U-shaped hook body 21 from the opening of the first U-shaped hook body 21, and the side wall of the first U-shaped hook body 21 that is not connected to the first connecting member 22 is inserted into the second U-shaped hook body 41; rotate the inspection plate 3 clockwise to make the mutual interference volume between the first U-shaped hook body 21 and the second U-shaped hook body 41 reach the maximum, and then the first hook 2 and the second hook 4 are engaged.
[0055] Similarly, by rotating the inspection plate 3 counterclockwise, the mutual interference volume between the second U-shaped hook body 41 and the first U-shaped hook body 21 gradually decreases, and the opening angle of the inspection opening 11 gradually increases (as Figure 4 andFigure 5 as shown, until the side wall of the second U-shaped hook body 41 can be taken out from the opening of the first U-shaped hook body 21, the disassembly of the inspection plate 3 can be realized, and the inspection opening 11 can be completely exposed (as Figure 6 shown).
[0056] As Figure 5 and Figure 6 shown, the overhead structure of the rail vehicle facilitating maintenance further includes a limiting plate 5. One end of the limiting plate 5 is a free end, and the other end is connected to a side wall of the first U-shaped hook body 21 and is arranged opposite to the opening of the first U-shaped hook body 21. The limiting plate 5 and the first U-shaped hook body 21 enclose a receiving space with an opening, and the receiving space is used to receive the second U-shaped hook body 41.
[0057] Specifically, the limiting plate 5 is horizontally arranged and is arranged opposite to the opening of the first U-shaped hook body 21. The limiting plate 5 and the opening of the first U-shaped hook body 21 are arranged at intervals, so that the limiting plate 5 and the first U-shaped hook body 21 can enclose a receiving space with an opening, and the opening of the receiving space can allow the side wall of the second U-shaped hook body 41 to be inserted into the first U-shaped hook body 21, thereby realizing the buckling of the first hook 2 and the second hook 4.
[0058] After the first hook 2 and the second hook 4 are buckled, the limiting plate 5 limits the second hook 4 from above the second hook 4, restricting the upward movement distance of the second hook 4, thereby restricting the relative displacement space between the second hook 4 and the first hook 2, achieving the purpose of improving the stability after the first hook 2 and the second hook 4 are buckled.
[0059] Meanwhile, when the inspection plate 3 needs to be disassembled, through the limitation of the second U-shaped hook body 41 by the limiting plate 5, only by lifting the inspection plate 3 a small distance can the second U-shaped hook body 41 be taken out from the receiving space, thereby separating the second hook 4 from the first hook 2 and realizing the disassembly of the inspection plate 3.
[0060] In an embodiment of the present application, when the first hook 2 and the second hook 4 are buckled, the second U-shaped hook body 41 is in contact with the two side walls and the bottom wall of the first U-shaped hook body 21 respectively, so that the first U-shaped hook body 21 limits the second U-shaped hook body 41 from both sides of the second U-shaped hook body 41, improving the stability after the first hook 2 and the second hook 4 are buckled.
[0061] Specifically, the side walls of the second U-shaped hook body 41 placed in the accommodation space are respectively in contact with the bottom wall and the two side walls of the first U-shaped hook body 21. Then, the side walls of the second U-shaped hook body 41 placed in the accommodation space are clamped by the first U-shaped hook body 21, stabilizing the first hook 2 and the second hook 4 in the buckled state and reducing the rotational offset of the second hook 4 relative to the first hook 2 when there is no external force acting thereon.
[0062] In an embodiment of this embodiment, there is a gap between the side wall of the second U-shaped hook body 41 placed outside the accommodation space and the first U-shaped hook body 21, providing a moving space for the rotation of the second U-shaped hook body 41 relative to the first U-shaped hook body 21. Then, when the first hook 2 and the second hook 4 are in the buckled state, applying a downward force to the inspection plate 3 causes the second U-shaped hook body 41 to rotate with the end point of the side wall placed in the accommodation space as the fulcrum, thereby adjusting the opening angle of the inspection plate 3. When the rotation angle of the inspection plate 3 is large enough, the interference volume between the second U-shaped hook body 41 and the first U-shaped hook body 21 gradually decreases, and the volume of the second U-shaped hook body 41 placed in the accommodation space is smaller than the opening volume of the accommodation space, the second U-shaped hook body 41 can be taken out from the accommodation space, and the second U-shaped hook body 41 is detached from the first U-shaped hook body 21, thereby realizing the disassembly of the second hook 4 from the first hook 2, and the inspection opening 11 can be completely exposed.
[0063] The second hook 4 further includes a protrusion 6. The protrusion 6 is provided on the second U-shaped hook body 41 and is located outside the bottom wall of the second U-shaped hook body 41. When the first hook 2 and the second hook 4 are buckled, the protrusion 6 is located in the accommodation space and abuts against the limiting plate 5.
[0064] Specifically, the protrusion 6 is in the opposite direction to the opening direction of the second U-shaped hook body 41. The protrusion 6 is used to interfere with the limiting plate 5. When the first hook 2 and the second hook 4 are buckled, the protrusion 6 is located in the accommodation space and abuts against the limiting plate 5. Under the action of force conduction, the side wall of the second U-shaped hook body 41 located in the accommodation space can abut against the bottom wall of the first U-shaped hook body 21, so that through the cooperation of the limiting plate 5 and the first U-shaped hook body 21, the overall structure formed by the protrusion 6 and the second U-shaped hook body 41 is positioned in the accommodation space, further improving the stability of the buckling of the first hook 2 and the second hook 4 and reducing the rotational displacement of the second hook 4 relative to the first hook 2 when there is no external force acting thereon.
[0065] It can be understood that when it is necessary to disassemble the inspection plate 3, it is necessary to overcome the interference force between the limiting plate 5 and the convex portion 6, and rotate the inspection plate 3 in the reverse direction with force, so that the convex portion 6 first disengages from the accommodation space, and the convex portion 6 and the limiting plate 5 are misaligned with each other; continue to rotate the inspection plate 3 until the volume of the second U-shaped hook body 41 placed in the accommodation space is smaller than the opening volume of the accommodation space, then the second U-shaped hook body 41 can be taken out from the accommodation space, and the second U-shaped hook body 41 disengages from the first U-shaped hook body 21, thereby realizing the disassembly of the second hook 4 from the first hook 2, and the inspection opening 11 can be completely exposed.
[0066] In an embodiment of the present application, such as Figure 3 , Figure 5 and Figure 6 shown, the overhead structure of the rail vehicle facilitating maintenance further includes an elastic shock pad 7, and the elastic shock pad 7 is sleeved on the convex portion 6 and is used to abut against the limiting plate 5 when the first hook 2 and the second hook 4 are buckled.
[0067] The elastic shock pad 7 is used to reduce the vibration during the frictional interference between the convex portion 6 and the limiting plate 5 and improve the smoothness of the movement of the inspection plate 3 when it is buckled; at the same time, the elastic shock pad 7 can increase the frictional force between the limiting plate 5 and the convex portion 6, further improve the stability when the first hook 2 and the second hook 4 are buckled, and reduce the rotational displacement of the second hook 4 relative to the first hook 2 without external force.
[0068] In an embodiment of the present application, when the first hook 2 and the second hook 4 are buckled, the projection of the free end of the limiting plate 5 on the ground is located between the projection of the side wall of the second U-shaped hook body 41 outside the accommodation space on the ground and the projection of the convex portion 6 on the ground; that is, when the first hook 2 and the second hook 4 are buckled, the side wall of the second U-shaped hook body 41 connecting the second connecting member 42 extends beyond the limiting plate 5, so that the side wall of the second U-shaped hook body 41 connecting the second connecting member 42 is placed outside the accommodation space, so as to reduce the angle and distance that the second U-shaped hook body 41 needs to rotate when disengaging from the first U-shaped hook body 21, and further improve the convenience of disassembling the inspection plate 3.
[0069] The overhead structure of the rail vehicle facilitating maintenance further includes a lock 8 (as Figure 3 , Figure 4 and Figure 6 shown), a mounting plate 9 (as Figure 3 and Figure 6as shown) and a latch 8-bit; the latch 8 is arranged at one end of the inspection plate 3 away from the second hook 4; the assembly plate 9 is arranged on the ceiling body 1 and partially extends to the inspection opening 11; the latch 8-bit is arranged on the assembly plate 9 and is used for cooperating with the latch 8.
[0070] The latch 8-bit and the latch 8 cooperate with each other. When the latch 8 is unlocked from the latch 8-bit, the inspection opening 11 can be opened by rotating the inspection plate 3, and even the inspection plate 3 can be disassembled to completely expose the inspection opening 11; when the first hook 2 is latched with the second hook 4, the latch 8 and the latch 8-bit are latched, and the positioning of the inspection plate 3 can be realized.
[0071] The second hook 4 and the latch 8 are distributed at both ends of the inspection plate 3, so that the inspection plate 3 can be positioned by the latch 8 and the second hook 4 at both ends respectively, thereby maintaining the stability of latching. In an embodiment of the present application, one end of the inspection plate 3 close to the latch 8 is higher than the end close to the second hook 4, which not only enables the inspection plate 3 to be adapted to the appearance shape of the lighting product when being latched, but also enables the self-gravity of the inspection plate 3 to generate a certain pressure on the cooperation between the first hook 2 and the second hook 4, further improving the stability of the latching between the first hook 2 and the second hook 4.
[0072] The present application also provides a rail vehicle, which includes the above-mentioned easily maintainable rail vehicle ceiling structure.
[0073] In summary, the present application provides an easily maintainable rail vehicle ceiling structure and a rail vehicle, which includes a ceiling body; a first hook arranged on the ceiling body and close to the inspection opening of the ceiling body;
[0074] an inspection plate for shielding the inspection opening; a second hook arranged on the inspection plate and used for detachably latching with the first hook; the second hook can rotate relative to the first hook to open and close the inspection opening. The present application realizes the closing of the inspection opening and the adjustment of the opening angle through the latching, rotation and disassembly of the first hook and the second hook; at the same time, when the second hook is removed from the first hook, the inspection plate can be away from the inspection opening, and the inspection opening can be completely exposed, thereby expanding the maintenance space and improving the convenience of repairing or replacing the lighting product.
[0075] It should be understood that the application of the present invention is not limited to the above examples. For those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.
Claims
1. A rail vehicle roof structure that is easy to maintain, comprising a roof body, characterized in that: It also includes: A first hook is disposed on the ceiling body and is close to an inspection opening of the ceiling body; An inspection plate, used to cover the inspection opening; The second hook is arranged on the inspection plate and is used for detachably engaging with the first hook; the second hook can rotate relative to the first hook to open and close the inspection port.
2. The rail vehicle roof structure that is easy to maintain according to claim 1 is characterized in that: The first hook comprises: The first U-shaped hook body; The first connecting member has one end connected to the first U-shaped hook body and the other end detachably connected to the ceiling body.
3. The rail vehicle roof structure that is easy to maintain according to claim 2 is characterized in that: The second hook includes: The second U-shaped hook body; A second connecting member, one end of which is connected to the second U-shaped hook body, and the other end of which is detachably connected to the access plate; When the first hook is buckled with the second hook, the opening of the first U-shaped hook body and the opening of the second U-shaped hook body are arranged facing each other, and the first U-shaped hook body and the second U-shaped hook body are engaged with each other.
4. The rail vehicle roof structure that is easy to maintain according to claim 3 is characterized in that: It also includes: A limiting plate, one end of which is a free end, and the other end of which is connected to a side wall of the first U-shaped hook body, and is arranged opposite to the opening of the first U-shaped hook body; the limiting plate and the first U-shaped hook body together form a receiving space with an opening, and the receiving space is used to receive the second U-shaped hook body.
5. The rail vehicle roof structure that is easy to maintain according to claim 4 is characterized in that: When the first hook is buckled with the second hook, the side wall of the second U-shaped hook body placed in the accommodation space is in contact with the bottom wall and two side walls of the first U-shaped hook body respectively.
6. The rail vehicle roof structure that is easy to maintain according to claim 4, characterized in that: The second hook also includes: A protrusion is provided on the second U-shaped hook body and is located outside the bottom wall of the second U-shaped hook body; When the first hook is buckled with the second hook, the protrusion is located in the accommodating space and abuts against the limiting plate.
7. The rail vehicle roof structure that is easy to maintain according to claim 6, characterized in that: It also includes: An elastic shockproof pad is sleeved on the raised portion and is used to abut against the limiting plate when the first hook is buckled with the second hook.
8. The rail vehicle roof structure that is easy to maintain according to claim 6, characterized in that: When the first hook is buckled with the second hook, the projection of the free end of the limiting plate toward the ground is located between the projection of the side wall of the second U-shaped hook body outside the accommodating space toward the ground and the projection of the protrusion toward the ground.
9. The rail vehicle roof structure that is easy to maintain according to claim 1, characterized in that: It also includes: A lock buckle, arranged at an end of the access plate away from the second hook; An assembly plate, disposed on the ceiling body and partially extending to the inspection opening; The locking position is arranged on the assembly plate and is used to cooperate with the locking catch.
10. A rail vehicle, characterized in that: It comprises a rail vehicle roof structure that is easy to maintain as described in any one of claims 1-9.