Case crossbeam and case structure

Abstract

The application relates to the technical field of servers, and provides a case crossbeam and a case structure. The case crossbeam comprises a first crossbeam section, a second crossbeam section and a third crossbeam section which are sequentially connected; the first crossbeam section and the second crossbeam section are connected in an extendable mode, a first locking mechanism is arranged at the connecting position of the first crossbeam section and the second crossbeam section, the second crossbeam section and the third crossbeam section are connected in a rotatable mode, and a second locking mechanism is arranged at the connecting position of the second crossbeam section and the third crossbeam section. The case crossbeam provided by the application can be formed into a whole fixed structure to improve the overall strength of the case structure, and can also be partially disassembled to maintain the components below the different crossbeam sections, so that the overall disassembly is not needed, the maintenance time is reduced, the first crossbeam section, the second crossbeam section and the third crossbeam section can also be kept in a certain state, sufficient space is provided for maintenance personnel, and the disassembly difficulty is reduced.

Description

Technical Field

[0001] This application relates to the field of server technology, and in particular to a chassis beam and chassis structure. Background Technology

[0002] Rack-mount chassis come in various standard sizes due to different functions and requirements. Some chassis exceeding a certain size may have insufficient overall strength due to their own weight or dimensions, affecting stability and safety. Therefore, reinforcement measures need to be taken to strengthen the chassis structure. Currently, methods to enhance overall strength include adding internal structural reinforcements or other forms of beams, such as a single, integral beam. While this can effectively strengthen the structure, it requires complete removal from the chassis during assembly or after-sales maintenance, making disassembly and reassembly difficult due to the compact internal space. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a chassis beam and chassis structure.

[0004] The first aspect of this application provides a chassis crossbeam, including a first crossbeam segment, a second crossbeam segment, and a third crossbeam segment connected in sequence;

[0005] The first crossbeam segment and the second crossbeam segment are telescopically connected, and the end of the first crossbeam segment away from the second crossbeam segment is used to connect with the chassis body. A first locking mechanism is provided at the connection between the first crossbeam segment and the second crossbeam segment, which has a first locking state to fix the first crossbeam segment and the second crossbeam segment relatively, and a first unlocking state to allow the first crossbeam segment and the second crossbeam segment to telescopically extend relative to each other.

[0006] The second crossbeam segment is rotatably connected to the third crossbeam segment, and the end of the third crossbeam segment away from the second crossbeam segment is used to connect to the chassis body. A second locking mechanism is provided at the connection between the second crossbeam segment and the third crossbeam segment, which has a second locking state to fix the second crossbeam segment and the third crossbeam segment relatively, and a second unlocking state to allow the second crossbeam segment and the third crossbeam segment to rotate relatively.

[0007] Optionally, a first locking hole is provided on the first crossbeam segment, and a second locking hole is provided on the second crossbeam segment. The first locking mechanism includes a first fixing part and a first protrusion movably disposed on the first fixing part.

[0008] In the first locked state, the first protrusion of the first locking mechanism protrudes from the first fixing part and is inserted into the first lock hole and the second lock hole. In the first unlocked state, the first protrusion of the first locking mechanism retracts into the first fixing part.

[0009] Optionally, there may be multiple first lock holes, which are spaced apart along the extension direction of the first crossbeam segment.

[0010] And / or, the number of the second lock holes is multiple, and the multiple second lock holes are spaced apart along the extension direction of the second crossbeam segment.

[0011] Optionally, a third locking hole is provided on the second crossbeam segment, and a fourth locking hole is provided on the third crossbeam segment. The second locking mechanism includes a second fixing part and a second protrusion movably disposed on the second fixing part.

[0012] In the second locked state, the second protrusion of the second locking mechanism protrudes from the second fixing part and is inserted into the third and fourth locking holes. In the second unlocked state, the second protrusion of the second locking mechanism retracts into the second fixing part.

[0013] Optionally, there may be multiple third locking holes, which are spaced apart along the circumferential direction of the rotation center line of the second crossbeam segment.

[0014] And / or, the number of the fourth locking holes is multiple, and the multiple fourth locking holes are spaced apart along the circumferential direction of the rotation center line of the third crossbeam segment.

[0015] Optionally, the first crossbeam segment includes a first folded edge, a second folded edge, and a third folded edge connected in sequence, and the first folded edge, the second folded edge, and the third folded edge together form a sliding groove, and the second crossbeam segment is inserted into the sliding groove and slides in cooperation with the sliding groove.

[0016] Optionally, a first limiting edge is provided at the end of the first folded edge away from the second folded edge, and the first limiting edge is located on the side of the first folded edge facing the third folded edge;

[0017] The third folded edge is provided with a second limiting edge at the end away from the second folded edge, and the second limiting edge is located on the side of the third folded edge facing the first folded edge.

[0018] Optionally, a pivot is provided at the connection between the second crossbeam segment and the third crossbeam segment, and the pivot passes through the second crossbeam segment and the third crossbeam segment in sequence.

[0019] Optionally, a first connecting plate is provided at the end of the first crossbeam segment away from the second crossbeam segment. The first connecting plate has a first connecting hole, and the first connecting plate is connected to the chassis body by a first fastener passing through the first connecting hole.

[0020] And / or, the end of the third crossbeam segment away from the second crossbeam segment is provided with a second connecting plate, the second connecting plate is provided with a second connecting hole, and the second connecting plate is connected to the chassis body by a second fastener passing through the second connecting hole.

[0021] A second aspect of this application provides a chassis structure, including a chassis body and a chassis beam as described in any of the preceding claims, the chassis beam being disposed inside the chassis body and detachably connected to the chassis body.

[0022] The technical solution provided in this application has the following advantages compared with the prior art:

[0023] The chassis beam and chassis structure provided in this application include a first crossbeam segment, a second crossbeam segment, and a third crossbeam segment connected in sequence. The first crossbeam segment and the second crossbeam segment are telescopically connected, and the end of the first crossbeam segment away from the second crossbeam segment is used to connect to the chassis body. The second crossbeam segment and the third crossbeam segment are rotatably connected, and the end of the third crossbeam segment away from the second crossbeam segment is used to connect to the chassis body. That is, inside the chassis body, after the first crossbeam segment, the second crossbeam segment, and the third crossbeam segment are connected in sequence, both ends of the first crossbeam segment and the end of the third crossbeam segment away from each other are connected to the chassis body, thereby enabling the chassis beam to be connected inside the chassis body. In use, when the first locking mechanism locks the first crossbeam segment and the second crossbeam segment, and the second locking mechanism locks the second crossbeam segment and the third crossbeam segment, the chassis beam forms an integral fixed structure, which is supported inside the chassis body. This design enhances the overall strength of the chassis structure. When maintenance is required, the first and second locking mechanisms can be appropriately unlocked to allow for partial disassembly. For example, the first crossbeam can be retracted relative to the second crossbeam, or the third crossbeam can be rotated relative to the second crossbeam. Alternatively, the second and third crossbeams can be extended or retracted relative to the first crossbeam. This allows for the maintenance of the components below the corresponding crossbeams without the need for complete disassembly, reducing maintenance time. Furthermore, when the first and second crossbeams extend or retract relative to each other, the rotation of the third crossbeam can be prevented, thus avoiding interference between the third crossbeam and the inner wall of the chassis. The chassis provides sufficient maintenance space. After the first, second, and third crossbeams are moved, they can be locked in a relatively retracted or rotated state, providing ample space for maintenance personnel to operate and reducing the difficulty of disassembly and assembly. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the chassis beam according to an embodiment of this application;

[0027] Figure 2 This is a structural schematic diagram of the chassis beam from another perspective according to an embodiment of this application;

[0028] Figure 3 This is a structural schematic diagram of the chassis beam from another perspective, according to an embodiment of this application.

[0029] Figure 4 This is a partial cross-sectional view of a first locking mechanism according to an embodiment of this application.

[0030] In the diagram: 1. First crossbeam segment; 11. First locking hole; 12. First folded edge; 13. Second folded edge; 14. Third folded edge; 15. First limiting edge; 16. Second limiting edge; 17. First connecting plate; 2. Second crossbeam segment; 3. Third crossbeam segment; 31. Fourth locking hole; 32. Second connecting plate; 4. First locking mechanism; 41. First fixing part; 42. First protrusion; 5. Second locking mechanism; 6. Rotating shaft. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0033] The chassis beam and chassis structure will be described in detail below through specific embodiments:

[0034] Reference Figures 1 to 4 As shown, some embodiments of this application provide a chassis crossbeam, including a first crossbeam segment 1, a second crossbeam segment 2, and a third crossbeam segment 3 connected in sequence.

[0035] The first crossbeam segment 1 and the second crossbeam segment 2 are telescopically connected, and the end of the first crossbeam segment 1 away from the second crossbeam segment 2 is used to connect with the chassis body. The second crossbeam segment 2 and the third crossbeam segment 3 are rotatably connected, and the end of the third crossbeam segment 3 away from the second crossbeam segment 2 is used to connect with the chassis body. That is, inside the chassis body, after the first crossbeam segment 1, the second crossbeam segment 2 and the third crossbeam segment 3 are connected in sequence, both ends of the first crossbeam segment 1 and the third crossbeam segment 3 that are far apart are connected with the chassis body, so that the chassis crossbeams can be connected to the inside of the chassis body.

[0036] A first locking mechanism 4 is provided at the connection between the first crossbeam segment 1 and the second crossbeam segment 2, having a first locking state to fix the first crossbeam segment 1 and the second crossbeam segment 2 relatively, and a first unlocking state to allow the first crossbeam segment 1 and the second crossbeam segment 2 to extend and retract relative to each other; a second locking mechanism 5 is provided at the connection between the second crossbeam segment 2 and the third crossbeam segment 3, having a second locking state to fix the second crossbeam segment 2 and the third crossbeam segment 3 relatively, and a second unlocking state to allow the second crossbeam segment 2 and the third crossbeam segment 3 to rotate relative to each other.

[0037] In use, when the first locking mechanism 4 locks the first crossbeam segment 1 and the second crossbeam segment 2, and the second locking mechanism 5 locks the second crossbeam segment 2 and the third crossbeam segment 3, the chassis crossbeams form a fixed, integral structure. When supported inside the chassis body, this structure enhances overall chassis strength. When maintenance is required, appropriately unlocking the first locking mechanism 4 and the second locking mechanism 5 allows for partial disassembly, such as retracting the first crossbeam segment 1 relative to the second crossbeam segment 2, rotating the third crossbeam segment 3 relative to the second crossbeam segment 2, or moving the second crossbeam segment 2 and the third crossbeam segment 3 relative to each other. The extension and retraction of the first crossbeam section 1 allows for the maintenance of the components below each crossbeam section without the need for complete disassembly, reducing maintenance time. Furthermore, the relative extension and retraction of the first crossbeam section 1 and the second crossbeam section 2 prevents the third crossbeam section 3 from rotating, thus avoiding interference between the third crossbeam section 3 and the inner wall of the chassis. The chassis provides ample maintenance space. After the first crossbeam section 1, the second crossbeam section 2, and the third crossbeam section 3 are moved, they can be locked in a relatively retracted or rotated state, providing sufficient space for maintenance personnel, facilitating operation, and reducing the difficulty of disassembly and assembly.

[0038] It should be noted that the first crossbeam segment 1 and the second crossbeam segment 2 are telescopically connected, and the second crossbeam segment 2 and the third crossbeam segment 3 are rotatably connected, which also allows the chassis crossbeams to adapt to chassis structures of different sizes, making them highly versatile.

[0039] In some embodiments, a first locking hole 11 is provided on the first crossbeam segment 1, and a second locking hole is provided on the second crossbeam segment 2. The first locking mechanism 4 includes a first fixing part 41 and a first protrusion 42 movably disposed on the first fixing part 41, that is, the first protrusion 42 can move relative to the first fixing part 41.

[0040] In the first locked state, the first protrusion 42 of the first locking mechanism 4 protrudes from the first fixing part 41 and is inserted into the first lock hole 11 and the second lock hole to form a mechanical interlock, thereby fixing the relative position of the first crossbeam segment 1 and the second crossbeam segment 2, thereby fixing the overall length of the chassis crossbeam. In the first unlocked state, the first protrusion 42 retracts into the first fixing part 41 to release the fixation between the first crossbeam segment 1 and the second crossbeam segment 2, so as to facilitate the adjustment of the length of the chassis crossbeam.

[0041] In practice, after the first crossbeam segment 1 extends and retracts relative to the second crossbeam segment 2 to the target position, the first protrusion 42 is inserted into the aligned first and second locking holes. The first locking holes 11 are provided on both opposite side walls of the first crossbeam segment 1, and the second locking holes are provided on both opposite side walls of the second crossbeam segment 2. This arrangement avoids shear displacement and results in high structural strength. Correspondingly, two first locking mechanisms 4 are provided, and the first protrusions 42 of the two first locking mechanisms 4 are arranged in opposite directions.

[0042] Specifically, the first fixing part 41 has a first clearance groove inside, and the first protrusion 42 slides in the first clearance groove to achieve protrusion and retraction. A first elastic element is provided between the first protrusion 42 and the bottom wall of the first clearance groove, so that when the first protrusion 42 is manually pressed, the first protrusion 42 retracts into the first fixing part 41, and when the pressure is released, the first protrusion 42 automatically pops out of the first fixing part 41 to lock the first crossbeam segment 1 and the second crossbeam segment 2.

[0043] Reference Figure 2 and Figure 3 As shown, there are multiple first locking holes 11, which are spaced apart along the extension direction of the first crossbeam segment 1, and / or multiple second locking holes, which are spaced apart along the extension direction of the second crossbeam segment 2. It can be understood that when the first protrusion 42 is inserted into the first locking holes 11 or second locking holes at different positions, the overall length of the first crossbeam segment 1 and the second crossbeam segment 2 can be adjusted, thereby adapting to different sizes of components below the chassis crossbeam, providing high flexibility.

[0044] The first locking mechanism 4 is fixedly mounted on the second crossbeam segment 2.

[0045] In some embodiments, a third locking hole is provided on the second crossbeam segment 2, and a fourth locking hole 31 is provided on the third crossbeam segment 3. The second locking mechanism 5 includes a second fixed part and a second protrusion movably disposed on the second fixed part, that is, the second protrusion can move relative to the second fixed part.

[0046] In the second locked state, the second protrusion of the second locking mechanism 5 protrudes from the second fixing part and is inserted into the third and fourth locking holes 31 to form a mechanical interlock, thereby fixing the relative position of the second crossbeam segment 2 and the third crossbeam segment 3 and fixing them at the current angle. In the second unlocked state, the second protrusion of the second locking mechanism 5 retracts into the second fixing part to release the fixation between the second crossbeam segment 2 and the third crossbeam segment 3, so as to facilitate the adjustment of the angle of the third crossbeam segment 3 and avoid the operating space required for maintenance.

[0047] In practice, after the third crossbeam segment 3 rotates relative to the second crossbeam segment 2 to the target position, the second protrusion inserts into the aligned third and fourth locking holes 31. The second crossbeam segment 2 has third locking holes on both opposite side walls, and the third crossbeam segment 3 has fourth locking holes 31 on both opposite side walls. This arrangement avoids shear displacement and results in high structural strength. Correspondingly, two second locking mechanisms 5 are provided, and the second protrusions of the two second locking mechanisms 5 are arranged in opposite directions.

[0048] Specifically, the second fixing part has a second clearance groove inside, and the second protrusion slides in the second clearance groove to achieve protrusion and retraction. A second elastic element is provided between the second protrusion and the bottom wall of the second clearance groove, so that when the second protrusion is manually pressed, the second protrusion retracts into the second fixing part, and when the pressure is released, the second protrusion automatically pops out of the second fixing part to lock the second crossbeam segment 2 and the third crossbeam segment 3.

[0049] Reference Figure 2 and Figure 3 As shown, there are multiple third locking holes, which are spaced apart along the circumferential direction of the rotation center line of the second crossbeam segment 2; and / or, there are multiple fourth locking holes 31, which are spaced apart along the circumferential direction of the rotation center line of the third crossbeam segment 3. It can be understood that when the second protrusion is inserted into the third or fourth locking holes 31 at different positions, the rotation angle of the third crossbeam segment 3 relative to the second crossbeam segment 2 can be adjusted, thereby adapting to different dimensions of components below the third crossbeam segment 3, thus improving practicality.

[0050] The second locking mechanism 5 is fixedly mounted on the third crossbeam segment 3.

[0051] In some embodiments, the first crossbeam segment 1 includes a first folded edge 12, a second folded edge 13, and a third folded edge 14 connected in sequence, and the first folded edge 12, the second folded edge 13, and the third folded edge 14 together form a groove. The second crossbeam segment 2 is inserted into the groove and slides within the groove. It can be understood that the first crossbeam segment 1 is wrapped around the outside of the second crossbeam segment 2 on three sides, and the three-sided constraint can ensure the straightness of the relative expansion and contraction movement between the first crossbeam segment 1 and the second crossbeam segment 2.

[0052] Furthermore, a first limiting edge 15 is provided at the end of the first folded edge 12 away from the second folded edge 13, and the first limiting edge 15 is located on the side of the first folded edge 12 facing the third folded edge 14, so as to limit the second crossbeam segment 2 in the slide groove by the first limiting edge 15; a second limiting edge 16 is provided at the end of the third folded edge 14 away from the second folded edge 13, and the second limiting edge 16 is located on the side of the third folded edge 14 facing the first folded edge 12, so as to limit the second crossbeam segment 2 in the slide groove by the second limiting edge 16, thereby achieving the effect of preventing detachment.

[0053] In practice, the first folded edge 12, the second folded edge 13, the third folded edge 14, the first limiting edge 15 and the second limiting edge 16 are integrally formed and together form a sliding groove structure. The shape of the second crossbeam segment 2 is adapted to the shape of the sliding groove, which can ensure that the telescopic movement can be carried out smoothly.

[0054] In some embodiments, a pivot 6 is provided at the connection between the second crossbeam segment 2 and the third crossbeam segment 3, and the pivot 6 passes through the second crossbeam segment 2 and the third crossbeam segment 3 in sequence. It is understood that the pivot 6 is rotatably connected to both the second crossbeam segment 2 and the third crossbeam segment 3, and the pivot 6 passes through at least the opposite side walls of the second crossbeam segment 2 and the opposite side walls of the third crossbeam segment 3. In this way, the rotation between the second crossbeam segment 2 and the third crossbeam segment 3 can be ensured to be smooth.

[0055] In some embodiments, a first connecting plate 17 is provided at the end of the first crossbeam segment 1 away from the second crossbeam segment 2. The first connecting plate 17 has a first connecting hole. The first connecting plate 17 is connected to the chassis body by a first fastener passing through the first connecting hole to achieve a detachable connection. When necessary, the first fastener can be loosened to remove part of the chassis crossbeam structure.

[0056] A second connecting plate 32 is provided at the end of the third crossbeam segment 3 away from the second crossbeam segment 2. The second connecting plate 32 has a second connecting hole. The second connecting plate 32 is connected to the chassis body by a second fastener passing through the second connecting hole to achieve a detachable connection. When necessary, the second fastener can be loosened to remove part of the chassis crossbeam structure.

[0057] It should be noted that the first connecting plate 17 is attached to the chassis body and the second connecting plate 32 is attached to the chassis body. This ensures the contact area between the first connecting plate 17 and the chassis body, and between the second connecting plate 32 and the chassis body, thus avoiding stress concentration and ensuring the overall strength of the chassis structure.

[0058] Other embodiments of this application provide a chassis structure, including a chassis body and a chassis beam as described in any of the above embodiments. The chassis beam is disposed inside the chassis body and is detachably connected to the chassis body, so as to facilitate disassembly and assembly operations at both ends of the chassis beam and reduce the difficulty of subsequent maintenance.

[0059] The chassis structure provided in this application includes the chassis beam of any of the above embodiments, and therefore has the beneficial effects of the chassis beam of any of the above embodiments, which will not be repeated here.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0061] The above are merely specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to these embodiments, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A chassis crossbeam, characterized in that, It includes a first crossbeam segment (1), a second crossbeam segment (2), and a third crossbeam segment (3) connected in sequence; The first crossbeam segment (1) is telescopically connected to the second crossbeam segment (2), and the end of the first crossbeam segment (1) away from the second crossbeam segment (2) is used to connect to the chassis body. A first locking mechanism (4) is provided at the connection between the first crossbeam segment (1) and the second crossbeam segment (2), which has a first locking state to fix the first crossbeam segment (1) and the second crossbeam segment (2) relatively, and a first unlocking state to allow the first crossbeam segment (1) and the second crossbeam segment (2) to telescopically extend and retract relative to each other. The second crossbeam segment (2) is rotatably connected to the third crossbeam segment (3), and the end of the third crossbeam segment (3) away from the second crossbeam segment (2) is used to connect to the chassis body. A second locking mechanism (5) is provided at the connection between the second crossbeam segment (2) and the third crossbeam segment (3), which has a second locking state to fix the second crossbeam segment (2) and the third crossbeam segment (3) relative to each other, and a second unlocking state to allow the second crossbeam segment (2) and the third crossbeam segment (3) to rotate relative to each other.

2. The chassis crossbeam of claim 1, wherein, The first crossbeam segment (1) is provided with a first locking hole (11), the second crossbeam segment (2) is provided with a second locking hole, and the first locking mechanism (4) includes a first fixing part (41) and a first protrusion (42) movably disposed on the first fixing part (41); In the first locked state, the first protrusion (42) of the first locking mechanism (4) protrudes out of the first fixing part (41) and is inserted into the first lock hole (11) and the second lock hole. In the first unlocked state, the first protrusion (42) of the first locking mechanism (4) retracts into the first fixing part (41).

3. The chassis crossbeam according to claim 2, characterized in that, The number of the first lock holes (11) is multiple, and the multiple first lock holes (11) are spaced apart along the extension direction of the first crossbeam segment (1); And / or, the number of the second lock holes is multiple, and the multiple second lock holes are spaced apart along the extension direction of the second crossbeam segment (2).

4. The chassis crossbeam according to claim 1, characterized in that, The second crossbeam segment (2) is provided with a third locking hole, and the third crossbeam segment (3) is provided with a fourth locking hole (31). The second locking mechanism (5) includes a second fixed part and a second protrusion movably disposed on the second fixed part. In the second locked state, the second protrusion of the second locking mechanism (5) protrudes out of the second fixing part and is inserted into the third lock hole and the fourth lock hole (31). In the second unlocked state, the second protrusion of the second locking mechanism (5) retracts into the second fixing part.

5. The chassis crossbeam according to claim 4, characterized in that, The number of the third lock holes is multiple, and the multiple third lock holes are spaced apart along the circumferential direction of the rotation center line of the second crossbeam segment (2); And / or, the number of the fourth locking holes (31) is multiple, and the multiple fourth locking holes (31) are spaced apart along the circumferential direction of the rotation center line of the third crossbeam segment (3).

6. The chassis crossbeam according to claim 1, characterized in that, The first crossbeam segment (1) includes a first folded edge (12), a second folded edge (13) and a third folded edge (14) connected in sequence, and the first folded edge (12), the second folded edge (13) and the third folded edge (14) together form a sliding groove, and the second crossbeam segment (2) is inserted into the sliding groove and slides in cooperation with the sliding groove.

7. The chassis crossbeam according to claim 6, characterized in that, The first folded edge (12) is provided with a first limiting edge (15) at the end away from the second folded edge (13), and the first limiting edge (15) is located on the side of the first folded edge (12) facing the third folded edge (14); The third fold (14) is provided with a second limiting edge (16) at the end away from the second fold (13), and the second limiting edge (16) is located on the side of the third fold (14) facing the first fold (12).

8. The chassis crossbeam according to claim 1, characterized in that, A pivot (6) is provided at the connection between the second crossbeam segment (2) and the third crossbeam segment (3), and the pivot (6) passes through the second crossbeam segment (2) and the third crossbeam segment (3) in sequence.

9. The chassis crossbeam according to claim 1, characterized in that, A first connecting plate (17) is provided at the end of the first crossbeam segment (1) away from the second crossbeam segment (2). A first connecting hole is provided on the first connecting plate (17). The first connecting plate (17) is connected to the chassis body by a first fastener passing through the first connecting hole. And / or, the end of the third crossbeam segment (3) away from the second crossbeam segment (2) is provided with a second connecting plate (32), the second connecting plate (32) is provided with a second connecting hole, and the second connecting plate (32) is connected to the chassis body by a second fastener passing through the second connecting hole.

10. A chassis structure, characterized in that, It includes a chassis body and a chassis beam as described in any one of claims 1 to 9, wherein the chassis beam is disposed inside the chassis body and is detachably connected to the chassis body.

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