A side sliding GPU side edge pressing card support and a server rack

Abstract

The application relates to the technical field of computer equipment, in particular to a side sliding type GPU side edge pressing bracket, which comprises a bracket body used for abutting against a top wall of a GPU, a mounting portion is arranged on the bracket body and slides along the length direction of the bracket body, an abutting portion used for abutting against a side wall of the GPU is arranged on the mounting portion, and a first fixing portion used for fixing the mounting portion is arranged on the bracket body. The application has the effect of improving the application range of the GPU bracket.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of computer equipment, and in particular to a side sliding GPU side pressing bracket and a server rack. BACKGROUND

[0002] With the data processed by the data center becoming larger and larger, in order to meet the increasing demand for data operation processing, the GPU electronic parts are arranged more and more densely, and the height of the GPU video card used by a single server is also larger and larger. The limitation of the maximum height of 98.40mm of the GPU in the traditional PCIe4.0 specification has been increasingly difficult to meet the GPU operation and PCB Layout requirements. The actual height of the GPU video card is often greater than 98.40mm design. From the initial 98.40mm height to 117.25mm, and there is no unified size standard for each GPU manufacturer at present.

[0003] At present, when the GPU is in an application scenario that needs to be arranged horizontally in a row, the traditional method is to design different GPU side supports to support different height GPUs, but this will cause the same server to support multiple types of GPUs, and many different types of GPU supports need to be designed. These GPU supports cannot be normalized designed, have low application range, and will eventually lead to a large increase in the cost of server single machine structure. SUMMARY

[0004] In order to improve the application range of the GPU support, the present application provides a side sliding GPU side pressing bracket and a server rack.

[0005] In a first aspect, the present application provides a side sliding GPU side pressing bracket, which adopts the following technical solution:

[0006] A side sliding GPU side pressing bracket, comprising a bracket body for abutting against the top wall of the GPU, a mounting portion slidingly arranged on the bracket body and along the length direction of the bracket body, an abutting portion arranged on the mounting portion for abutting against the side wall of the GPU, and a first fixing portion arranged on the bracket body for fixing the mounting portion.

[0007] Further, the mounting portion comprises a sliding block, the two sides of the sliding block are fixedly provided with a stop edge, the bracket body comprises a pressing plate, and the two sides of the pressing plate are provided with a stop strip matched with the stop edge.

[0008] Further, the first fixing portion comprises a first bolt, a first threaded hole is formed in the pressing plate, and the first bolt is matched with the first threaded hole; a first waist-shaped slot is formed in the top wall of the sliding block and along the sliding direction of the sliding block, the first bolt is arranged in the first waist-shaped slot and is threadedly connected with the pressing plate.

[0009] Further, the abutting portion comprises an abutting plate vertically arranged at one end of the sliding block, a plurality of sliding grooves are arranged on the length direction of the pressing plate, the abutting plate is arranged in the sliding grooves and used for abutting with the side wall of the GPU, a connecting block is fixedly arranged on the abutting plate, the other end of the connecting block is fixedly arranged with an abutting block, the abutting block is used for abutting with the side wall of the sliding groove, and the other end of the abutting block is fixedly connected with the sliding block.

[0010] Further, the abutting portion comprises an abutting plate vertically arranged at one end of the sliding block, a plurality of sliding grooves are arranged on the length direction of the pressing plate, the abutting plate is arranged in the sliding grooves and used for abutting with the side wall of the GPU, a connecting block is fixedly arranged on the abutting plate, the other end of the connecting block is fixedly arranged with an abutting block, the abutting block is used for abutting with the side wall of the sliding groove, and the other end of the abutting block is fixedly connected with the sliding block.

[0011] Further, the abutting portion comprises an abutting plate vertically arranged at one end of the sliding block, a plurality of sliding grooves are arranged on the length direction of the pressing plate, the abutting plate is arranged in the sliding grooves and used for abutting with the side wall of the GPU, a connecting block is fixedly arranged on the abutting plate, the other end of the connecting block is fixedly arranged with an abutting block, the abutting block is used for abutting with the side wall of the sliding groove, and the other end of the abutting block is fixedly connected with the sliding block.

[0012] Further, the abutting portion comprises an abutting plate vertically arranged at one end of the sliding block, a plurality of sliding grooves are arranged on the length direction of the pressing plate, the abutting plate is arranged in the sliding grooves and used for abutting with the side wall of the GPU, a connecting block is fixedly arranged on the abutting plate, the other end of the connecting block is fixedly arranged with an abutting block, the abutting block is used for abutting with the side wall of the sliding groove, and the other end of the abutting block is fixedly connected with the sliding block.

[0013] Through the above implementation, when the GPU is installed in the server, first, the worker places a plurality of GPUs in the server, and installs the support body to abut with the plurality of GPUs, then slides the mounting portion on the support body, so that the abutting portion on the mounting portion abuts with one end of the side wall of the GPU, and finally fixes the mounting portion on the support body by using the first fixing portion, and through the arrangement of the mounting portion and the support body, different types of GPUs can be fixed, so as to improve the application range of the GPU support.

[0014] In the second aspect, the server rack provided by the present application adopts the following technical scheme:

[0015] A server rack comprises a shell and a lateral sliding type GPU side edge pressing clamp according to any one of the first aspect: the shell is provided with a placing groove for placing a GPU and a containing groove for placing a CPU; the two side walls of the placing groove are fixedly provided with fixing blocks; the support body comprises a pressing plate, the pressing plate is vertically arranged between the two fixing blocks, and the fixing blocks are provided with a second fixing portion for fixing the pressing plate.

[0016] Further, the second fixing part comprises a second bolt, both ends of the pressing plate are fixedly provided with a limiting block, a second threaded hole is formed in the limiting block, and the second bolt is matched with the second threaded hole; a second waist-shaped groove is formed in the fixing block in the vertical direction, and the second bolt is arranged in the second waist-shaped groove and is threadedly connected with the limiting block.

[0017] Further, both sides of the limiting block are fixedly provided with a limiting plate, both sides of the second waist-shaped groove are fixedly provided with a mounting rod, the limiting block is slidingly arranged between the two mounting rods, and the limiting plate is slidingly connected with the mounting rod.

[0018] According to the above embodiment, when the GPU is installed in the server rack, first, the worker places the plurality of GPUs in the placing groove in the shell, then according to the height of the plurality of GPUs, the worker slides the pressing plate to make the pressing plate abut against the plurality of GPUs, after adjusting the height of the pressing plate, the pressing plate is fixed on the shell through the second fixing part, and the height of the pressing plate can be adjusted according to the height of the GPU, further increasing the application range of the support body.

[0019] In summary, the present application has the following beneficial technical effects: when the GPU is installed in the server, first, the worker places the plurality of GPUs in the server, when the GPU is installed in the server rack, first, the worker places the plurality of GPUs in the placing groove in the shell, then according to the height of the plurality of GPUs, the worker slides the pressing plate to make the pressing plate abut against the plurality of GPUs, after adjusting the height of the pressing plate, the pressing plate is fixed on the shell through the second fixing part; then the mounting part on the support body is slid to make the abutting part on the mounting part abut against one end of the side wall of the GPU, finally, the first fixing part is used to fix the mounting part on the support body, and through the arrangement of the mounting part and the support body, different types of GPUs can be fixed, so as to improve the application range of the GPU support. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a partial structure schematic view of a lateral sliding type GPU side edge pressing clamp of the present application, mainly used to show the structure of the abutting frame;

[0021] Figure 2 is a partial structure schematic view of a lateral sliding type GPU side edge pressing clamp of the present application, mainly used to show the structure of the abutting frame;

[0022] Figure 3 is a partial structure schematic view of a server rack of the present application, mainly used to show the structure on the pressing plate;

[0023] Figure 4It is a part structure schematic view of a server rack of the application, mainly used for indicating the structure of the fixing block.

[0024] Mark explanation: 1, support body; 11, pressing plate; 12, baffle; 13, first threaded hole; 14, sliding groove; 15, limiting block; 16, second threaded hole; 17, limiting plate; 2, sliding block; 21, abutting plate; 211, connecting block; 212, abutting block; 22, first bolt; 23, baffle; 24, first waist-shaped groove; 3, abutting frame; 31, first mounting block; 32, second mounting block; 33, ear block; 34, telescopic rod; 35, compression spring; 36, rubber pad; 4, shell; 41, placing groove; 42, accommodating groove; 43, fixing block; 431, second bolt; 432, second waist-shaped groove; 433, mounting rod. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the application more clear, the following will combine the drawings of the application with the embodiments to make further detailed description of the application. It should be understood that the specific embodiments described here are only used to explain the application, and are not used to limit the application. Figures 1-4 DETAILED DESCRIPTION

[0026] Embodiment 1

[0027] The embodiment of the application discloses a lateral sliding type GPU side edge pressing clamp.

[0028] Referring to Figure 1 , Figure 2 and Figure 3 , a lateral sliding type GPU side edge pressing clamp, comprising a support body 1 for abutting with the top wall of the GPU, the support body 1 comprising a pressing plate 11, the pressing plate 11 being provided with a mounting portion slidingly arranged on the pressing plate 11 along the length direction of the pressing plate 11, the mounting portion comprising a plurality of sliding blocks 2, the sliding blocks 2 being slidingly arranged on the top wall of the pressing plate 11, the two sides of the sliding block 2 being fixedly provided with a baffle 23, and the sliding block 2 and the baffle 23 being arranged as an arc surface, by arranging the arc surface, the worker can avoid injury to a certain extent when sliding the sliding block 2; the two sides of the pressing plate 11 are provided with baffles 12 matched with the baffles 23, the baffles 23 are slidingly arranged on the baffles 12 along the sliding direction of the sliding blocks 2, and the end of the baffles 23 and the baffles 12 close to the GPU are both provided with a round corner, which can avoid damaging the outer wall of the GPU to a certain extent.

[0029] Referring to Figure 1 , Figure 2 and Figure 3The first fixing part is arranged on the pressing plate 11 and is used for fixing the sliding block 2. The first fixing part comprises a first bolt 22. In the embodiment, the first bolt 22 is arranged as a cross bolt. In other embodiments, the first bolt 22 can be arranged as a torx bolt. A first threaded hole 13 is arranged on the pressing plate 11 and is matched with the first bolt 22. A first waist-shaped slot 24 is arranged on the top wall of the sliding block 2 and is matched with the first bolt 22. The first waist-shaped slot 24 and the first bolt 22 are correspondingly arranged. The first bolt 22 is arranged in the first waist-shaped slot 24 and is threadedly connected with the pressing plate 11. In general, the first bolt 22 is arranged in the first waist-shaped slot 24 and is threadedly connected with the pressing plate 11. The bolt head of the first bolt 22 is not in abutment with the top wall of the sliding block 2. When the sliding block 2 is slid on the pressing plate 11 to the corresponding position, the worker rotates the first bolt 22, and the bolt head of the first bolt 22 is in abutment with the top wall of the sliding block 2, so that the sliding block 2 is fixed.

[0030] With reference to Figure 1 , Figure 2 and Figure 3 , the mounting part is provided with an abutting part used for abutting with the side wall of the GPU. As an embodiment of the abutting part, the abutting part comprises an abutting plate 21. One end of the sliding block 2 is fixedly provided with an ear block 33, and the ear block 33 is located between the two stop edges 23. The abutting plate 21 is vertically arranged on the ear block 33. A plurality of sliding grooves 14 are arranged on the pressing plate 11 and are matched with the abutting plate 21. The abutting plate 21 is arranged in the sliding groove 14 and is used for abutting with the side wall of the GPU. The connecting block 211 is fixedly arranged on the abutting plate 21 and is horizontally arranged on the abutting plate 21. The abutting block 212 is fixedly arranged on the other end of the connecting block 211 and is vertically arranged on the ear block 33. The abutting block 212 is located between the ear block 33 and the connecting block 211. The connecting block 211 is located between the abutting block 212 and the abutting plate 21. In the embodiment, the height of the abutting block 212 is the same as the thickness of the pressing plate 11. The abutting block 212 is used for abutting with the side wall of the sliding groove 14.

[0031] In the above embodiment, the abutting block 212 and the connecting plate are arranged, so that the sliding range of the abutting plate 21 and the sliding range of the sliding block 2 are offset. The sliding range of the sliding block 2 is further increased, so that the worker can adjust the installation position of the GPU.

[0032] The implementation principle of the lateral sliding type GPU side edge clamping support embodiment of the present application is as follows: when installing a GPU in a server, first, the worker places multiple GPUs in the server, and installs the support body 1 to abut against the multiple GPUs, then slides the sliding block 2 on the support body 1, so that the abutting plate 21 on the sliding block 2 abuts against one end of the side wall of the GPU, when the sliding block 2 slides to the corresponding position on the pressing plate 11, the worker rotates the first bolt 22, and makes the bolt head of the first bolt 22 abut against the top wall of the sliding block 2, so as to fix the sliding block 2 on the support body 1, and the abutting plate 21 on the sliding block 2 and the support body 1 can be used to fix different types of GPUs, so as to improve the application range of the GPU support.

[0033] Embodiment 2

[0034] Based on the embodiment 1

[0035] With reference to Figure 1 , Figure 2 and Figure 3 , as another implementation of the abutting part, the abutting part comprises an abutting frame 3, one end of the sliding block 2 is fixedly provided with an ear block 33, the ear block 33 is located between the two stop edges 23, the abutting plate 21 is vertically arranged on the ear block 33, the abutting frame 3 is slidingly arranged on the bottom wall of the ear block 33 in the vertical direction, and a plurality of sliding grooves 14 are arranged on the pressing plate 11 in the length direction of the pressing plate 11, the sliding grooves 14 are matched with the abutting frame 3, the abutting frame 3 is arranged in the sliding grooves 14, and the abutting frame 3 is used to abut against the adjacent two side walls of the GPU.

[0036] With reference to Figure 1 , Figure 2 and Figure 3 , the abutting frame 3 comprises a first mounting block 31 and a second mounting block 32, the first mounting block 31 is fixedly connected with the second mounting block 32, and the connection between the first mounting block 31 and the second mounting block 32 is round cornered; and the length directions of the first mounting block 31 and the second mounting block 32 are perpendicular, wherein the first mounting block 31 is horizontally arranged, the second mounting block 32 is vertically arranged, and the first mounting block 31 is located between the second mounting block 32 and the ear block 33; and rubber pads 36 are fixedly arranged on the sides of the first mounting block 31 and the second mounting block 32 which are close to each other, the rubber pads 36 are used to abut against the side walls of the GPU, when the sliding block 2 slides to the position of the GPU, the first mounting block 31 and the second mounting block 32 on the sliding block 2 slide to the position of the GPU along the sliding direction of the sliding block 2, and the rubber pads 36 on the first mounting block 31 and the second mounting block 32 abut against the adjacent two side walls of the GPU.

[0037] With reference to Figure 1 , Figure 2 and Figure 3The slider 2 is provided with a driving assembly for driving the abutting frame 3 to slide in a direction away from the slider 2, the driving assembly comprises a plurality of telescopic rods 34 and elastic members, each telescopic rod 34 is vertically arranged on the bottom wall of the lug block 33, and the other end of each telescopic rod 34 is fixedly arranged on the top wall of the first mounting block 31, that is, the telescopic rod 34 is located between the lug block 33 and the first mounting block 31; the elastic members are used for driving the first mounting block 31 to slide in a direction away from the slider 2, the elastic members comprise a plurality of compression springs 35, one end of each compression spring 35 is fixedly connected with the lug block 33, and the other end of each compression spring 35 is fixedly connected with the first mounting block 31, and the compression spring 35 covers the telescopic rod 34.

[0038] In the above embodiment, the distance between the first mounting block 31, the second mounting block 32 and the lug block 33 can be adjusted by the telescopic rod 34, the first mounting block 31 and the second mounting block 32 slide in the vertical direction, and the first mounting block 31 and the second mounting block 32 have a tendency to slide in a direction away from the slider 2 by the compression spring 35.

[0039] The implementation principle of the embodiment of the application is as follows: when installing the GPU in the server, first, the worker places a plurality of GPUs in the server, installs the support body 1 into the server, and sets the plurality of GPUs in the area covered by the support body 1, then slides the slider 2 on the support body 1 to make the first mounting block 31 and the second mounting block 32 on the slider 2 slide in a direction close to the GPU, and the rubber pads 36 on the first mounting block 31 and the second mounting block 32 are respectively abutted with the adjacent two side walls of the GPU by the setting of the telescopic rod 34 and the compression spring 35; when the slider 2 slides on the pressing plate 11 to the corresponding position, the worker rotates the first bolt 22, and the bolt head of the first bolt 22 is abutted with the top wall of the slider 2 to fix the slider 2 on the support body 1, and the abutting plate 21 on the slider 2 and the support body 1 can be used to fix different types of GPUs at the same time, so as to improve the application range of the GPU support.

[0040] Embodiment 3

[0041] The embodiment of the application also discloses a server rack.

[0042] On the basis of embodiment 1

[0043] Refer to Figure 1 , Figure 2 and Figure 3A server rack comprises a housing 4 and a lateral sliding GPU side edge press card support according to any one of Embodiments 1 and 2: the housing 4 is provided with a placing slot 41 for placing a GPU and a containing slot 42 for placing a CPU, and the placing slot 41 and the containing slot 42 are provided adjacently; the two opposite side walls of the placing slot 41 are both fixedly provided with a fixed block 43, in the embodiment, the fixed block 43 is provided in a cuboid shape and is vertically arranged on the side wall of the placing slot 41, and the support body 1 comprises a press plate 11 which is arranged in a sliding manner in the vertical direction between the two fixed blocks 43.

[0044] With reference to Figure 1 , Figure 3 and Figure 4 , the fixed block 43 is provided with a second fixing part for fixing the press plate 11, and the second fixing part comprises a second bolt 431, in the embodiment, the second bolt 431 is provided in a cross bolt, and in other embodiments, the second bolt 431 can be provided in a torx bolt; the two ends of the press plate 11 are both fixedly provided with a limiting block 15, the two limiting blocks 15 are oppositely arranged, the limiting block 15 is provided with a second threaded hole 16, the second bolt 431 is threadedly connected with the second threaded hole 16; in general, the second bolt 431 is arranged in the second waist-shaped slot 432 and is threadedly connected with the limiting block 15, and the bolt head of the second bolt 431 does not abut against the side wall of the housing 4, when the press plate 11 is slid to the corresponding position, the worker rotates the second bolt 431, and the bolt head of the second bolt 431 abuts against the side wall of the housing 4, so as to fix the press plate 11.

[0045] With reference to Figure 1 , Figure 3 and Figure 4 Figure 1 Figure 3 Figure 4 , the two sides of the limiting block 15 are both fixedly provided with a limiting plate 17, and the limiting block 15 and the limiting plate 17 are provided in a round corner, which can avoid damaging the side wall of the fixed block 43 to a certain extent, the two sides of the second waist-shaped slot 432 are both fixedly provided with a mounting rod 433, the limiting block 15 is arranged in a sliding manner between the two mounting rods 433, the limiting plate 17 corresponds to the mounting rod 433 in a one-to-one manner, and the limiting plate 17 is slidably connected with the mounting rod 433, through the arrangement of the limiting plate 17 and the mounting rod 433, the press plate 11 can be vertically slid relative to the bottom wall of the housing 4, and does not shake around.

[0046] The implementation principle of the server rack embodiment of the present application is as follows: when the GPU is installed in the server rack, first, the worker places the plurality of GPUs in the placing slots 41 in the shell 4, then according to the height of the plurality of GPUs, the worker slides the pressing plate 11 to make the pressing plate 11 abut against the plurality of GPUs, after adjusting the height of the pressing plate 11, the pressing plate 11 is fixed on the shell 4 through the second bolt 431, and the height of the pressing plate 11 can be adjusted according to the height of the GPU, then the abutment plate 21 on the sliding block 2 abuts against one end of the side wall of the GPU by sliding the sliding block 2 on the support body 1, when the sliding block 2 slides to the corresponding position on the pressing plate 11, the worker rotates the first bolt 22, and the bolt head of the first bolt 22 abuts against the top wall of the sliding block 2 to fix the sliding block 2 on the support body 1, and the abutment plate 21 on the sliding block 2 and the support body 1 can be used to fix different types of GPUs, so as to improve the application range of the GPU support.

[0047] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A side-sliding GPU side edge compression card holder, characterized by: The application relates to a support body (1) for abutting against the top wall of a GPU, a mounting portion is arranged on the support body (1) and slides along the length direction of the support body (1), an abutting portion for abutting against the side wall of the GPU is arranged on the mounting portion, and a first fixing portion for fixing the mounting portion is arranged on the support body (1). The mounting portion comprises a sliding block (2), the two sides of the sliding block (2) are fixedly provided with a baffle (23), the support body (1) comprises a pressing plate (11), the two sides of the pressing plate (11) are provided with a baffle strip (12) matched with the baffle (23), an arc surface is arranged between the sliding block (2) and the baffle (23), and the end of the baffle (23) and the baffle strip (12) close to the GPU is provided with a round corner. The first fixing portion comprises a first bolt (22), a first threaded hole (13) is formed in the pressing plate (11), and the first bolt (22) is matched with the first threaded hole (13); a first waist-shaped groove (24) is formed in the top wall of the sliding block (2) and along the sliding direction of the sliding block (2), the first bolt (22) is arranged in the first waist-shaped groove (24) and is threadedly connected with the pressing plate (11). The abutting portion comprises an abutting frame (3), the abutting frame (3) is arranged on one end of the bottom wall of the sliding block (2) and slides along the vertical direction, a plurality of sliding grooves (14) are formed in the pressing plate (11) and along the length direction of the pressing plate (11), the abutting frame (3) is arranged in the sliding grooves (14) and is used for abutting against the side wall of the GPU; the abutting frame (3) is used for abutting against the adjacent two side walls of the GPU, and a driving assembly is arranged on the sliding block (2) and drives the abutting frame (3) to slide in the direction away from the sliding block (2).

2. The lateral slide GPU side pressure card holder of claim 1, wherein: The abutting portion comprises an abutting plate (21), the abutting plate (21) is vertically arranged on one end of the sliding block (2), a plurality of sliding grooves (14) are formed in the pressing plate (11) and along the length direction of the pressing plate (11), the abutting plate (21) is arranged in the sliding grooves (14) and is used for abutting against the side wall of the GPU; a connecting block (211) is fixedly arranged on the abutting plate (21), the other end of the connecting block (211) is fixedly provided with an abutting block (212), the abutting block (212) is used for abutting against the side wall of the sliding groove (14), and the other end of the abutting block (212) is fixedly connected with the sliding block (2).

3. The lateral sliding GPU side bracing clip of claim 1, wherein: The abutting frame (3) comprises a first mounting block (31) and a second mounting block (32), the first mounting block (31) is fixedly connected with the second mounting block (32), the length directions of the first mounting block (31) and the second mounting block (32) are perpendicular, and rubber pads (36) are fixedly arranged on the first mounting block (31) and the second mounting block (32), and the rubber pads (36) are used for abutting against the side wall of the GPU.

4. The side-loading GPU side-brace clip of claim 3, wherein: The driving assembly comprises a telescopic rod (34) and an elastic member, one end of the telescopic rod (34) is fixedly arranged on the bottom wall of the sliding block (2), the other end of the telescopic rod (34) is fixedly arranged on the top wall of the first mounting block (31), and the elastic member is used to drive the first mounting block (31) to slide towards the direction away from the sliding block (2).

5. A server rack characterized by The GPU side edge pressing bracket comprises a shell (4) and a lateral sliding type GPU side edge pressing bracket as claimed in any one of claims 1-4: the shell (4) is provided with a placing groove (41) for placing a GPU and a containing groove (42) for placing a CPU; both side walls of the placing groove (41) are fixedly provided with a fixed block (43), the bracket body (1) comprises a pressing plate (11) which is slidingly arranged between the two fixed blocks (43) in the vertical direction, and the fixed block (43) is provided with a second fixing part for fixing the pressing plate (11).

6. A server rack as claimed in claim 5, characterized in that: The second fixing part comprises a second bolt (431), both ends of the pressing plate (11) are fixedly provided with a limiting block (15), the limiting block (15) is provided with a second threaded hole (16), the second bolt (431) is matched with the second threaded hole (16), and the second bolt (431) is threadedly connected with the limiting block (15).

7. A server rack as claimed in claim 6, characterized in that: Both sides of the limiting block (15) are fixedly provided with a limiting plate (17), both sides of the second waist-shaped groove (432) are fixedly provided with a mounting rod (433), the limiting block (15) is slidingly arranged between the two mounting rods (433), and the limiting plate (17) is slidingly connected with the mounting rod (433). Both sides of the limiting block (15) are fixedly provided with a limiting plate (17), both sides of the second waist-shaped groove (432) are fixedly provided with a mounting rod (433), the limiting block (15) is slidingly arranged between the two mounting rods (433), and the limiting plate (17) is slidingly connected with the mounting rod (433).

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