Anti-cracking light partition board

Abstract

The utility model relates to the technical field of partition boards, in particular to an anti-cracking light partition board which comprises a panel and connecting assemblies arranged on one side face of the panel in a vertically symmetrical mode, a fixing frame is arranged in the panel, a core board is arranged in the fixing frame, a triangular pipe and a supporting rod frame are arranged in the core board, and the triangular pipe internally comprises a ventilation cavity, a fiber layer and a mortar layer. The connecting assembly comprises symmetrically-arranged vertical plates and connecting plates symmetrically arranged at the front ends of the vertical plates, a horizontal bubble pipe is arranged in the middle of the top of one connecting plate, the fireproof effect is achieved by arranging a fireproof layer made of a perlite plate inorganic material in the core plate, and noise transmission is reduced while heat preservation is conducted on the partition wall board through the arrangement of a heat preservation layer and a sound insulation layer; the stability of the internal structure of the core plate is improved by welding and fixing the triangular pipes and the supporting rod frame, the mortar layers and the fiber layers are arranged in the triangular pipes to reduce the corrosion degree of the inner walls of the triangular pipes, and the ventilation cavities are formed in the fiber layers to release the internal pressure of the core plate.

Description

Technical Field

[0001] This utility model relates to the field of partition wall technology, specifically a crack-resistant lightweight partition wall. Background Technology

[0002] With the continuous acceleration of urbanization, the scale of urban construction is constantly expanding, the number of construction projects is increasing dramatically, and the demand for building materials is also growing stronger. This provides a broad market space for the application of crack-resistant lightweight partition wall panels. In urban construction, the efficient use of space and rapid construction have become important requirements. The lightweight and quick installation characteristics of lightweight partition wall panels perfectly meet these requirements.

[0003] The utility model with announcement number CN215368023U includes a partition wall panel body. The partition wall panel body has tenons and mortises on both sides. At least two push rods are connected to the middle of the tenons. At least two sets of first limiting grooves are symmetrically opened on both sides of the tenons. A through hole is opened at the end of the mortises. A first chamber corresponding to the push rods is opened on the side of the partition wall panel body near the mortises. A U-shaped plate is slidably connected in the first chamber. A first spring is provided between the U-shaped plate and the first chamber. Multiple sets of second chambers are opened in the partition wall panel body. Each set of second chambers is symmetrically distributed on both sides of the mortises. Each set of second chambers is located on the same horizontal plane as its corresponding first chamber. An L-shaped plate is slidably connected in the second chamber. One side of the L-shaped plate abuts against the U-shaped plate. A second spring is connected between the other side of the L-shaped plate and the second chamber.

[0004] The above technical solution effectively avoids the problem of the bonded partition wall panels cracking due to external forces. However, the gypsum material used in the wall is too simple and lacks multiple layers of protection, making it difficult to achieve fireproof and soundproof effects. The lack of a limiting device inside the circular hollow hole reduces the structural strength of the partition wall panel. Furthermore, the spring elasticity gradually decreases during long-term use, making maintenance and replacement inconvenient and easily leading to cracks or loosening at the connection points of the partition wall panels. Additionally, external instruments are required to measure the tilt of the partition wall panels during installation. Utility Model Content

[0005] The purpose of this utility model is to provide a crack-resistant lightweight partition wall panel to solve the problems mentioned in the background art, such as the gypsum material used in the wall being too simple, the lack of multi-layer protection making it difficult to achieve multiple effects such as fireproofing and sound insulation, the lack of limiting devices inside the circular hollow holes leading to reduced structural strength of the partition wall panel, the gradual decline in spring elasticity over long-term use making maintenance and replacement inconvenient, the easy occurrence of cracks or loosening at the connection points of the partition wall panel, and the need for external instruments to measure whether the wall panel is tilted during installation.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A crack-resistant lightweight partition wall panel includes a panel and connecting components symmetrically arranged on one side of the panel. The panel has a fixing frame inside, and a core board inside the fixing frame. The core board contains multiple triangular tubes and support rods for connecting the triangular tubes. Each triangular tube contains a breathable cavity, a fiber layer, and a mortar layer. The core board is composed of multiple layers, including an insulation layer and a fireproof layer on the left side of the insulation layer, and a sound insulation layer on the right side of the insulation layer. The connecting components include symmetrically arranged vertical plates and connecting plates symmetrically arranged at the front ends of the vertical plates. One of the connecting plates has a horizontal bubble tube in the middle of its top. The panel has first sockets symmetrically arranged on the left side, and second sockets symmetrically arranged on the right side of the first sockets.

[0008] Preferably, the fixing frame is bonded and fixed to the panel, and the core board is bonded and fixed to the fixing frame.

[0009] In this invention, the panel is composed of cement and mineral fibers. The cement provides strength and hardness to the panel, while the fiber component reduces the degree of cracking. The building metal frame used for the fixing frame is made by cold bending. The building metal frame has high rigidity, which helps to limit the degree of shrinkage and deformation inside the panel. The adhesive fixing increases the overall structural strength of the fixing frame and the panel. The adhesive fixing of the fixing frame and the core board helps to increase the overall structural compressive strength of the fixing frame, while reducing the degree of deformation inside the fixing frame.

[0010] Preferably, the fireproof layer is bonded and fixed to the thermal insulation layer, and the thermal insulation layer is bonded and fixed to the sound insulation layer.

[0011] In this invention, the core board includes a fireproof layer, a thermal insulation layer, and a sound insulation layer. The multi-layer structure inside the core board facilitates mutual support, enhances the overall deformation resistance of the core board, and the adhesive fixing increases the overall structural strength of the core board. The fireproof layer is made of perlite board inorganic material, and the fireproof layer helps to prevent the spread of fire and makes the partition board more efficient in use. The thermal insulation layer is made of polystyrene foam, and the thermal insulation layer helps to reduce the exchange of heat between indoors and outdoors. The sound insulation layer is made of rock wool material, and the sound insulation layer helps to reduce the transmission of external noise and increase people's comfort indoors.

[0012] Preferably, the triangular tube is welded and fixed to the support frame, and the upper and lower ends of the triangular tube are provided with openings. The outer diameter of the mortar layer is bonded and fixed to the inner wall of the triangular tube, and the mortar layer is bonded and fixed to the fiber layer.

[0013] In this invention, the welding and fixing of the triangular tube and the support frame increases the overall structural strength. The triangular tube and support frame inside the core board reduce the degree of deformation inside the core board. The triangular tube has a triangular cross-section, which provides high structural stability. The inner wall of the mortar layer matches the outer wall of the fiber layer. The mortar layer is made of cement, which helps reduce the corrosion of the inner wall of the triangular tube. The fiber layer inside the mortar layer slows down the rate at which cracks form. The fiber layer forms a mesh structure on the inner wall of the mortar layer, which prevents water penetration. The bonding and fixing increase the overall structural stability of the mortar layer and the triangular tube, and the fiber layer and the mortar layer. The fiber layer has a venting cavity inside to release the pressure inside the core board. The upper and lower ends of the triangular tube pass through the upper and lower ends of the panel and the fixing frame, respectively. The openings at the upper and lower ends of the triangular tube are on the same plane as the top and bottom surfaces of the panel. Multiple triangular tubes are arranged symmetrically at equal intervals to achieve stable pressure release inside the partition wall panel.

[0014] Preferably, a first through hole is provided at each of the four corners of the surface of the vertical plate, and the two connecting plates are welded and fixed to the vertical plate respectively. A second through hole is provided at each of the four corners of the connecting plates.

[0015] In this invention, a first bolt is provided inside the first perforation, and the first bolt is threadedly connected to the first perforation. A first screw hole is provided at the corresponding position of the first perforation on the panel and the vertical plate. The first screw hole and the first perforation are respectively threadedly connected to the first bolt. The threaded connection fixes the position of the vertical plate on the outer wall of the panel. Welding fixation increases the overall structural stability of the connecting plate and the vertical plate. A second bolt is provided inside the second perforation, and the second bolt is threadedly connected to the second perforation. A second screw hole is provided at the corresponding position of the second socket and the connecting plate. The second screw hole and the second perforation are respectively threadedly connected to the second bolt. A horizontal bubble tube is provided to facilitate the measurement of the horizontal levelness of the partition wall. By observing whether the bubble is between the two scale lines of the horizontal bubble tube, it can be determined whether the partition wall is horizontally level. This helps to save the time of the installers and achieve rapid detection. The horizontal bubble tube is bonded and fixed to the connecting plate, increasing the overall structural stability.

[0016] Preferably, a first screw hole is provided on the inner wall of the first socket at the location corresponding to the first through hole, and the vertical plate is fixedly connected to the first socket by screws; a second screw hole is provided on the inner wall of the second socket at the location corresponding to the second through hole, and the connecting plate is fixedly connected to the second socket by screws.

[0017] In this invention, the first socket is sized to match the vertical plate, achieving stable splicing of the overall structure. A threaded connection secures the vertical plate to the first socket. The second socket connecting plate is sized to match the front and rear connecting plates, respectively, ensuring stable splicing. A threaded connection secures the connecting plate to its corresponding second socket. When multiple partition walls on the same horizontal plane are connected, the vertical plate is fixed to the side wall of the panel using a first bolt, and then the two connecting plates are quickly fixed to their corresponding second sockets using second bolts. When vertical partition walls are connected, the vertical plate is... The first bolt is used to fix the front surface of the panel. The two connecting plates connected to the vertical plate are inserted into the corresponding second socket positions and then fixed by the second bolt. When a single crack-resistant lightweight partition wall panel needs to be transported, the vertical plate is inserted into the first socket, and the first bolt is screwed into the first through hole and tightly connected with the first screw hole to fix the vertical plate to the first socket. The second bolt is screwed into the second through hole and tightly connected with the second screw hole to achieve stable connection between the two connecting plates and the second sockets at the front and rear ends respectively. The partition wall panels are assembled into a regular rectangular block shape, which is convenient for handling and neat stacking during transportation.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model achieves fireproofing by setting a fireproof layer of perlite board inorganic material inside the core board, setting a heat insulation layer and a sound insulation layer to facilitate heat insulation of the partition board and reduce noise transmission, setting multiple triangular tubes and welding them to the support frame to increase the internal structural stability of the core board, setting a mortar layer and a fiber layer inside the triangular tubes to reduce the degree of corrosion of the inner wall of the triangular tubes, and setting a breathable cavity inside the fiber layer to release the pressure inside the core board;

[0020] 2. This utility model reduces the degree of cracking inside the panel by setting a fixing frame between the panel and the core board, and sets a connecting component to facilitate the quick connection and disassembly of two partition boards in the same or perpendicular direction. By observing the position of the bubbles inside the horizontal bubble tube, it is possible to quickly determine whether the partition board is horizontally level. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this practical crack-resistant lightweight partition wall panel;

[0022] Figure 2 This is a schematic diagram of the disassembled structure of the crack-resistant lightweight partition wall panel of this utility model;

[0023] Figure 3 This utility model Figure 2 Enlarged schematic diagram of part A in the diagram;

[0024] Figure 4 This is a schematic diagram of the installation of the connection components of this utility model;

[0025] Figure 5 This is a schematic diagram of the multi-layer structure of the core board of this utility model;

[0026] Figure 6 This is a schematic diagram of the connection structure of multiple crack-resistant lightweight partition walls of this utility model.

[0027] The meanings of the labels in the diagram are as follows:

[0028] 1. Panel; 11. Fixing frame; 12. Core board; 120. Opening; 121. Triangular tube; 122. Support frame; 123. Fireproof layer; 124. Thermal insulation layer; 125. Sound insulation layer; 13. Mortar layer; 130. Fiber layer; 131. Ventilation cavity;

[0029] 2. Connecting component; 20. Vertical plate; 200. First through hole; 201. First screw hole; 21. Connecting plate; 210. Second through hole; 211. Second screw hole; 212. Horizontal bubble tube; 22. First socket; 23. Second socket. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-6 This embodiment provides a technical solution:

[0032] A crack-resistant lightweight partition wall panel includes a panel 1 and a connecting component 2 symmetrically arranged on one side of the panel 1. The connecting component 2 includes symmetrically arranged vertical plates 20 and symmetrically arranged connecting plates 21 at the front end of the vertical plates 20. One of the connecting plates 21 has a horizontal bubble tube 212 in the middle of its top. The panel 1 has a first socket 22 symmetrically opened on the left side, and a second socket 23 symmetrically opened on the right side of the first socket 22. The vertical plates 20 have first through holes 200 at each of the four corners. The two connecting plates 21 are welded and fixed to the vertical plates 20 respectively. The connecting plates 21 have second through holes 210 at each of the four corners.

[0033] In this invention, a first bolt is provided inside the first through hole 200, and the first bolt is threadedly connected to the first through hole 200. A first screw hole 201 is provided at the corresponding position of the first through hole 200 on the panel 1 and the vertical plate 20. The first screw hole 201 and the first through hole 200 are respectively threadedly connected to the first bolt. The threaded connection fixes the position of the vertical plate 20 on the outer wall of the panel 1. Welding fixation increases the overall structural stability of the connecting plate 21 and the vertical plate 20. A second bolt is provided inside the second through hole 210, and the second bolt is threadedly connected to the second through hole 210. A second screw hole 211 is provided at the corresponding position of the second socket 23 and the connecting plate 21. The second screw hole 211 and the second through hole 210 are respectively threadedly connected to the second bolt. A horizontal bubble tube 212 is provided to facilitate the measurement of the horizontal levelness of the partition wall. By observing whether the bubble is between the two scale lines of the horizontal bubble tube 212, it can be determined whether the partition wall is in a horizontally level state, which helps to save the time of the installers and achieve rapid detection. The horizontal bubble tube 212 is bonded and fixed to the connecting plate 21, which increases the overall structural stability.

[0034] The first socket 22 has a first screw hole 201 on its inner wall corresponding to the first through hole 200, and the vertical plate 20 is fixedly connected to the first socket 22 by screws. The second socket 23 has a second screw hole 211 on its inner wall corresponding to the second through hole 210, and the connecting plate 21 is fixedly connected to the second socket 23 by screws.

[0035] In this invention, the first socket 22 is sized to match the vertical plate 20, achieving stable splicing of the overall structure. A threaded connection secures the vertical plate 20 to the first socket 22. The second socket 23 is sized to match the connecting plate 21, enabling stable splicing of the two second sockets 23 with the connecting plates 21 located at the front and rear, respectively. A threaded connection secures the connecting plate 21 with its corresponding second socket 23. When multiple partition walls on the same horizontal plane are connected, the vertical plate 20 is fixed to the side wall of the panel 1 using the first bolt, and then the two connecting plates 21 are quickly fixed to their corresponding second sockets 23 using the second bolt. When vertical partition walls are connected, the vertical plate 20 is... The first bolt is fixedly connected to the front surface of the panel 1. The two connecting plates 21 connected to the vertical plate 20 are inserted into the corresponding second sockets 23 and then fixedly connected by the second bolt. When a single crack-resistant lightweight partition wall panel needs to be transported, the vertical plate 20 is inserted into the first socket 22, and the vertical plate 20 is fixed to the first socket 22 by screwing the first bolt into the first through hole 200 and tightly connecting it with the first screw hole 201. The second bolt is screwed into the second through hole 210 and tightly connected with the second screw hole 211, so that the two connecting plates 21 are stably connected to the second sockets 23 at the front and rear ends respectively. The partition wall panels are assembled into a regular rectangular block, which is convenient for handling and neat stacking during transportation.

[0036] In addition, the panel 1 is provided with a fixing frame 11 inside, the fixing frame 11 is provided with a core board 12 inside, the core board 12 is provided with multiple triangular tubes 121 inside, and a support frame 122 for connecting multiple triangular tubes 121. The triangular tubes 121 include a ventilated cavity 131, a fiber layer 130 and a mortar layer 13 inside. The core board 12 is composed of a multi-layer structure, including a heat insulation layer 124 and a fireproof layer 123 on the left side of the heat insulation layer 124. A sound insulation layer 125 is provided on the right side of the heat insulation layer 124. The fixing frame 11 is bonded and fixed to the panel 1, and the core board 12 is bonded and fixed to the fixing frame 11.

[0037] In this invention, panel 1 is composed of cement and mineral fibers. Cement provides strength and hardness to panel 1, while the fiber component reduces the degree of cracking in panel 1. The building metal frame used in the fixing frame 11 is made by cold bending process. The building metal frame has high rigidity, which helps to limit the degree of shrinkage and deformation inside panel 1. Adhesive fixing increases the overall structural strength of fixing frame 11 and panel 1. Adhesive fixing of fixing frame 11 and core board 12 helps to increase the overall structural compressive strength of fixing frame 11, while reducing the degree of deformation inside fixing frame 11.

[0038] Furthermore, the fireproof layer 123 is bonded and fixed to the insulation layer 124, and the insulation layer 124 is bonded and fixed to the sound insulation layer 125.

[0039] In this utility model, the core board 12 includes a fireproof layer 123, a thermal insulation layer 124, and a sound insulation layer 125. The core board 12 has a multi-layer structure inside, which facilitates mutual support and enhances the overall deformation resistance of the core board 12. The bonding and fixing increase the overall structural strength of the core board 12. The fireproof layer 123 is made of perlite board inorganic material. The fireproof layer 123 helps to prevent the spread of fire and makes the partition board more efficient in use. The thermal insulation layer 124 is made of polystyrene foam. The thermal insulation layer 124 helps to reduce the exchange of heat between indoors and outdoors. The sound insulation layer 125 is made of rock wool material. The sound insulation layer 125 helps to reduce the transmission of external noise and increase people's comfort indoors.

[0040] It is worth adding that the triangular tube 121 is welded and fixed to the support frame 122. Both the upper and lower ends of the triangular tube 121 are provided with openings 120. The outer diameter of the mortar layer 13 is bonded and fixed to the inner wall of the triangular tube 121, and the mortar layer 13 is bonded and fixed to the fiber layer 130.

[0041] In this invention, the triangular tube 121 and the support frame 122 are welded and fixed to increase the overall structural strength. The triangular tube 121 and support frame 122 are installed inside the core plate 12 to reduce the degree of deformation inside the core plate 12. The cross-section of the triangular tube 121 is triangular, and the triangular structure has high stability. The inner wall of the mortar layer 13 matches the outer wall of the fiber layer 130. The mortar layer 13 is made of cement, which helps reduce the degree of corrosion of the inner wall of the triangular tube 121. The fiber layer 130 is installed inside the mortar layer 13 to slow down the rate at which cracks form in the mortar layer 13. A mesh structure is formed on the inner wall of the mortar layer 13, which can prevent water penetration. The bonding and fixing increase the overall structural stability of the mortar layer 13 and the triangular tube 121, and the fiber layer 130 and the mortar layer 13. The fiber layer 130 has a ventilated cavity 131 to facilitate the release of pressure inside the core board 12. The upper and lower ends of the triangular tube 121 pass through the upper and lower ends of the panel 1 and the upper and lower ends of the fixing frame 11, respectively. The openings 120 at the upper and lower ends of the triangular tube 121 are on the same plane as the top and bottom surfaces of the panel 1. Multiple triangular tubes 121 are symmetrically arranged at equal intervals to achieve stable pressure release inside the partition wall panel.

[0042] In this embodiment, the crack-resistant lightweight partition wall panel is used by first welding the front ends of the vertical plate 20 to the corresponding connecting plate 21. First perforations 200 are made near the four corners of the vertical plate 20, and second perforations 210 are made near the four corners of the connecting plate 21. A horizontal bubble tube 212 is glued to the top center of one of the connecting plates 21. A first insertion slot 22, identical in shape and size to the vertical plate 20, is made on the left side of the panel 1. A first screw hole 201 is made on the inner wall of the first insertion slot 22 at a position corresponding to the first perforation 200 on the vertical plate 20. Second insertion slots 23 are symmetrically made on the inner wall of the first insertion slot 22. A second screw hole 211 is made on the inner wall of the second insertion slot 23 at a position corresponding to the second perforation 210. The inner wall of the triangular tube 121 is then connected to... The mortar layer 13 is bonded and fixed, and the outer wall of the fiber layer 130 is bonded to the inner wall of the mortar layer 13. The fiber layer 130 has a ventilation cavity 131 inside. The support frame 122 is welded and fixed to multiple triangular tubes 121. The insulation layer 124 is bonded to the outside of the triangular tubes 121 and the support frame 122. The fireproof layer 123 is bonded to the left side of the insulation layer 124. The sound insulation layer 125 is bonded and fixed to the right side of the insulation layer 124. The fireproof layer 123, the insulation layer 124 and the sound insulation layer 125 form the core board 12. The core board 12 is bonded to the inside of the fixing frame 11. The panel 1 is fitted onto the outer surface of the fixing frame 11. Openings 120 are made at the upper and lower ends of the panel 1, the fixing frame 11 and the core board 12, corresponding to the two ends of the triangular tubes 121.

[0043] Multiple crack-resistant lightweight partition boards placed in the same direction are fixed by placing the vertical plate 20 at the required position on the side wall of the panel 1, inserting the first bolt through the first through hole 200 into the first screw hole 201 and tightening it, and then inserting the two connecting plates 21 into the second insertion slots 23 at the front and rear ends of another crack-resistant lightweight partition board, and then threading the second bolt through the second through hole 210 and the second screw hole 211, thereby connecting and fixing multiple partition boards in the same direction. Two partition boards in a vertical direction are fixed by installing the vertical plate 20 and the two connecting plates 21 on the front surface of the panel 1, inserting the connecting plates 21 and the second connecting plates into the corresponding second insertion slots 23 at the front and rear ends, and then threading the second bolt through the second through hole 210 and the second screw hole 211, thereby connecting and fixing two partition boards at a vertical angle. When installing the crack-resistant lightweight partition boards, the construction personnel can determine whether the partition board is in a horizontal horizontal state by observing whether the bubble in the horizontal bubble tube 212 is between the two scale lines.

Claims

1. A crack-resistant lightweight partition wall panel, comprising a panel (1) and connecting components (2) symmetrically arranged on one side of the panel (1), characterized in that: The panel (1) is provided with a fixing frame (11) inside, the fixing frame (11) is provided with a core board (12) inside, the core board (12) is provided with a plurality of triangular tubes (121) inside, and a support frame (122) for connecting the plurality of triangular tubes (121). The triangular tubes (121) include a ventilated cavity (131), a fiber layer (130) and a mortar layer (13) inside. The core board (12) is composed of a multi-layer structure, including a heat insulation layer (124) and a fireproof layer (123) provided on the left side of the heat insulation layer (124). A sound insulation layer (125) is provided on the right side of the heat insulation layer (124). The connecting component (2) includes symmetrically arranged vertical plates (20) and symmetrically arranged connecting plates (21) at the front end of the vertical plates (20). A horizontal bubble tube (212) is provided in the middle of the top of one of the connecting plates (21). The panel (1) has a first socket (22) symmetrically opened on the left side, and a second socket (23) symmetrically opened on the right side of the first socket (22).

2. The crack-resistant lightweight partition wall panel according to claim 1, characterized in that: The fixing frame (11) is bonded and fixed to the panel (1), and the core board (12) is bonded and fixed to the fixing frame (11).

3. The crack-resistant lightweight partition wall panel according to claim 1, characterized in that: The fireproof layer (123) is bonded and fixed to the heat insulation layer (124), and the heat insulation layer (124) is bonded and fixed to the sound insulation layer (125).

4. The crack-resistant lightweight partition wall panel according to claim 1, characterized in that: The triangular tube (121) is welded and fixed to the support frame (122). The upper and lower ends of the triangular tube (121) are provided with openings (120). The outer diameter of the mortar layer (13) is bonded and fixed to the inner wall of the triangular tube (121), and the mortar layer (13) is bonded and fixed to the fiber layer (130).

5. The crack-resistant lightweight partition wall panel according to claim 1, characterized in that: The vertical plate (20) has a first through hole (200) at each of its four corners. The two connecting plates (21) are welded and fixed to the vertical plate (20) respectively. The connecting plates (21) have a second through hole (210) at each of their four corners.

6. The crack-resistant lightweight partition wall panel according to claim 1, characterized in that: A first screw hole (201) is provided on the inner wall of the first socket (22) at the position corresponding to the first through hole (200), and the vertical plate (20) is fixedly connected to the first socket (22) by screws. A second screw hole (211) is provided on the inner wall of the second socket (23) at the position corresponding to the second through hole (210), and the connecting plate (21) is fixedly connected to the second socket (23) by screws.

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