quick-assembly structure with counterweight reinforcement

Abstract

This utility model discloses a quick-installation structure for counterweight reinforcing ribs, relating to the field of elevator counterweight technology. The quick-installation structure includes a shell and reinforcing ribs. The shell has multiple insertion parts on its side walls, and multiple reinforcing ribs are arranged in a crisscross pattern within the shell. The number of insertion parts corresponds to the number of reinforcing ribs. Quick-installation components are fitted onto both ends of each reinforcing rib. Two quick-installation components are movably connected to the insertion parts located on opposite side walls of the shell to clamp and fix the reinforcing ribs. The reinforcing ribs are connected and fixed to the shell through the quick-installation components at both ends. By using a predetermined number and position of insertion parts on the side walls of the shell, a precise and standardized positioning reference is provided for the installation of each reinforcing rib's ends, eliminating positioning deviations caused by reliance on manual experience in traditional welding methods. Furthermore, the combination of quick-installation components and insertion parts eliminates the need for other tools during reinforcing rib installation, improving production efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of elevator counterweight technology, and in particular to a quick-install structure for counterweight reinforcing ribs. Background Technology

[0002] In the manufacturing and installation of elevator equipment, the counterweight is one of the key components. Its main function is to balance the weight of the car and its load, ensuring the stability and safety of elevator operation. During actual transportation, installation, and use, the counterweight inevitably faces impacts from external forces such as collisions and drops. Therefore, the counterweight must possess excellent impact resistance and structural integrity to prevent breakage or structural damage during these processes, thereby ensuring the safe operation of the elevator equipment and avoiding equipment failure, personal injury risks, and additional maintenance and replacement costs caused by counterweight breakage.

[0003] To meet the aforementioned impact resistance requirements, a common practice is to first create an empty shell. Specifically, this involves prefabricating a metal or composite material shell frame, welding staggered steel bars along the length and width of the shell's interior, and then filling the shell with slurry or other filler material. Once the slurry solidifies, it bonds tightly to the steel bars. However, currently, the main method is to weld the steel bars to the shell, relying entirely on the welder's personal experience and understanding for positioning. This results in poor consistency in the position of the weld points, making it difficult to standardize precisely and affecting the uniformity of the counterweight's quality. Furthermore, due to prolonged repetitive work, problems such as "incomplete welds" and "missing welds" may occur, impacting production efficiency. Utility Model Content

[0004] The main purpose of this utility model is to propose a quick-installation structure for counterweight reinforcing ribs, which aims to improve the installation efficiency of counterweight reinforcing ribs.

[0005] To achieve the above objectives, the present invention proposes a quick-assembly structure for a counterweight reinforcing rib, comprising:

[0006] The housing has multiple insertion portions on its side walls;

[0007] The number of reinforcing ribs is multiple and they are arranged in a crisscross pattern within the housing. The number of the insertion parts corresponds to the number of the reinforcing ribs.

[0008] The reinforcing rib has quick-connect fittings at both ends, and the two quick-connect fittings are respectively movably connected to the insertion parts located on opposite side walls of the housing to clamp and fix the reinforcing rib. The reinforcing rib is connected and fixed to the housing through the quick-connect fittings at both ends.

[0009] In one embodiment, the quick-release component includes an abutment portion and a connecting portion, the abutment portion and the connecting portion being integrally connected, the abutment portion abutting against the side wall of the housing to restrict the axial movement of the reinforcing rib;

[0010] The connecting part is provided with a connecting hole, and the reinforcing rib is inserted into the connecting hole to connect with the quick-connect component. The connecting part restricts the reinforcing rib from moving radially.

[0011] In one embodiment, the reinforcing rib is clearance-fitted with the connecting hole.

[0012] In one embodiment, the connecting hole is provided with connecting notches at intervals around its periphery. The connecting notches extend from the connecting portion toward the side opposite to the abutting portion and extend to the outside of the quick-connect component.

[0013] The reinforcing rib is interference-fitted with the connecting hole.

[0014] In one embodiment, the inner sidewall of the connecting hole is provided with a clamping protrusion, the clamping protrusion protruding inward relative to the sidewall of the connecting hole, and the reinforcing rib is interference-fitted with the clamping protrusion to clamp the reinforcing rib.

[0015] In one embodiment, the surface of the clamping protrusion is provided with anti-slip texture.

[0016] In one embodiment, a deformation groove is formed in the inner wall of the connecting portion, and the deformation groove is disposed near the opening of the connecting hole to reduce the wall thickness.

[0017] In one embodiment, the insertion portion is a mounting hole provided on the side wall of the housing for inserting the quick-connect component;

[0018] The cross-sectional size of the mounting hole is adapted to the cross-sectional size of the connecting part, and the connecting part is inserted into the mounting hole;

[0019] The cross-sectional size of the abutting part is larger than the cross-sectional size of the mounting hole, and the abutting part is located outside the housing and abuts against the side wall of the housing.

[0020] In one embodiment, the peripheral sidewall of the connecting portion is provided with a buckle, and the buckle is interference-fitted with the mounting hole;

[0021] When the quick-connect component is inserted into the mounting hole, the buckle and the abutting part are located on opposite sides of the housing, and both abut against the housing.

[0022] In one embodiment, the plug-in part is a sliding plug-in member provided on the inner side wall of the housing. The side wall of the sliding plug-in member has a plug-in interface. The plug-in interface is disposed adjacent to the connected side wall of the housing. The plug-in interface communicates with the limiting groove provided on the sliding plug-in member.

[0023] The abutting part is located within the limiting groove to restrict the axial movement of the abutting part along the connecting hole;

[0024] The limiting groove has a sliding notch on its side wall, which is adapted to the connecting part to slide the connecting part.

[0025] There are multiple sliding connectors, and the number of them corresponds to the number of quick-connect parts, so as to connect and fix the quick-connect parts.

[0026] The technical solution of this utility model provides a precise and standardized positioning reference for the installation of both ends of each reinforcing rib by using a predetermined number of corresponding and precisely positioned plug-in parts on the side wall of the shell. This eliminates the positioning deviation caused by reliance on manual experience in traditional welding methods, ensures the geometric consistency and positional accuracy of the reinforcing rib grid inside the counterweight, and provides a stable and reliable structural skeleton for subsequent grouting processes. Furthermore, the combination of the quick-installation parts and the plug-in parts allows the installation of the reinforcing ribs to be carried out without the need for other tools, and the installation quality is not affected by the worker's experience, thereby improving production efficiency and quality. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 A schematic diagram of an embodiment of the quick-assembly structure for the counterweight reinforcing ribs provided by this utility model;

[0029] Figure 2 This is a structural diagram of the quick-release component;

[0030] Figure 3 A schematic diagram of another embodiment of the quick-assembly structure for the counterweight reinforcing ribs provided by this utility model;

[0031] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0032] Explanation of icon numbers:

[0033] 100. Counterweight reinforcement quick-installation structure; 1. Shell; 11. Mounting hole; 12. Sliding connector; 121. Plug-in interface; 122. Limiting groove; 123. Sliding notch; 2. Reinforcing rib; 3. Quick-installation part; 31. Abutting part; 32. Connecting part; 321. Connecting hole; 322. Connecting notch; 323. Clamping protrusion; 324. Anti-slip texture; 325. Deformation groove; 326. Buckle.

[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] 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 scope of protection of the present utility model.

[0036] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0037] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0038] In the manufacturing and installation of elevator equipment, the counterweight is one of the key components. Its main function is to balance the weight of the car and its load, ensuring the stability and safety of elevator operation. During actual transportation, installation, and use, the counterweight inevitably faces impacts from external forces such as collisions and drops. Therefore, the counterweight must possess excellent impact resistance and structural integrity to prevent breakage or structural damage during these processes, thereby ensuring the safe operation of the elevator equipment and avoiding equipment failure, personal injury risks, and additional maintenance and replacement costs caused by counterweight breakage.

[0039] To meet the aforementioned impact resistance requirements, a common practice is to first create an empty shell. Specifically, this involves prefabricating a metal or composite material shell frame, welding staggered steel bars along the length and width of the shell's interior, and then filling the shell with slurry or other filler material. Once the slurry solidifies, it bonds tightly to the steel bars. However, currently, the main method is to weld the steel bars to the shell, relying entirely on the welder's personal experience and understanding for positioning. This results in poor consistency in the position of the weld points, making it difficult to standardize precisely and affecting the uniformity of the counterweight's quality. Furthermore, due to prolonged repetitive work, problems such as "incomplete welds" and "missing welds" may occur, impacting production efficiency.

[0040] This utility model proposes a quick-assembly structure 100 for a counterweight reinforcing rib.

[0041] Please see Figures 1 to 4 In one embodiment of this utility model, the quick-assembly structure 100 for reinforcing ribs of the counterweight includes:

[0042] Housing 1, the side wall of housing 1 is provided with a plurality of plug-in parts;

[0043] Reinforcing ribs 2, there are multiple reinforcing ribs 2, and they are arranged in a crisscross pattern inside the shell 1, and the number of the insertion parts corresponds to the number of reinforcing ribs 2;

[0044] The reinforcing rib 2 is fitted with quick-connect parts 3 at both ends. The two quick-connect parts 3 are respectively movably connected to the insertion parts located on opposite side walls of the housing 1 to clamp and fix the reinforcing rib 2. The reinforcing rib 2 is connected and fixed to the housing 1 through the quick-connect parts 3 at both ends.

[0045] Optionally, the reinforcing rib 2 is a steel bar.

[0046] It should be noted that the shell 1 has an opening on one side for injecting grout.

[0047] It is understood that each of the reinforcing ribs 2 corresponds to two quick-connect parts 3, and the housing 1 is also provided with two plug-in parts. The number of quick-connect parts 3 and plug-in parts is adapted to the number of reinforcing ribs 2.

[0048] The technical solution of this utility model provides a precise and standardized positioning reference for the installation of both ends of each reinforcing rib 2 by using a number of corresponding and positionally determined plug-in parts on the side wall of the shell 1. This eliminates the positioning deviation caused by reliance on manual experience in traditional welding methods, ensures the geometric consistency and positional accuracy of the reinforcing rib 2 grid inside the counterweight, and provides a stable and reliable structural skeleton for subsequent grouting processes. Furthermore, the combination of the quick-installation part 3 and the plug-in parts allows the installation of the reinforcing rib 2 to be carried out without the need for other tools, and the installation quality is not affected by the worker's experience, thereby improving production efficiency and quality.

[0049] like Figure 1 As shown, optionally, the quick-connect component 3 includes an abutment portion 31 and a connecting portion 32, the abutment portion 31 and the connecting portion 32 are integrally connected, and the abutment portion 31 abuts against the side wall of the housing 1 to restrict the axial movement of the reinforcing rib 2;

[0050] The connecting part 32 is provided with a connecting hole 321, and the reinforcing rib 2 is inserted into the connecting hole 321 to connect with the quick-connect component 3. The connecting part 32 restricts the reinforcing rib 2 from moving radially.

[0051] It is understandable that the reinforcing rib 2 can be fixed to the quick-release piece 3 simply by inserting both ends into the connecting holes 321, without the need for other tools, thus improving the ease of installation.

[0052] like Figure 2 As shown, the abutment portion 31 is disc-shaped and abuts against the side wall of the housing 1. The abutment surface of the abutment portion 31 and the housing 1 is perpendicular to the axis of the connecting hole 321. It can be understood that when the reinforcing rib 2 is inserted into the connecting hole 321, the axis of the reinforcing rib 2 coincides with the axis of the connecting hole 321. If the reinforcing rib 2 moves axially, it will drive the quick-release piece 3 to move, but the abutment portion 31 will restrict the axial movement.

[0053] In some embodiments, the abutment portion 31 only restricts the movement of the quick-release member 3 toward the housing 1. However, since one reinforcing rib 2 corresponds to two quick-release members 3, and the quick-release members 3 are located on opposite sides of the housing 1, the two quick-release members 3 cooperate to restrict the movement of the reinforcing rib 2 along its axial direction.

[0054] It is understood that when the reinforcing rib 2 is inserted into the connecting hole 321, the connecting part 32 is sleeved around the reinforcing rib 2 to restrict the movement of the reinforcing rib 2 in the radial direction.

[0055] In some embodiments, the reinforcing rib 2 is clearance-fitted with the connecting hole 321.

[0056] It is understandable that the clearance fit ensures the effective connection between the reinforcing rib 2 and the connecting hole 321.

[0057] In other embodiments, the connecting hole 321 is provided with a connecting notch 322 at intervals around its periphery. The connecting notch 322 extends from the connecting portion 32 toward the side opposite to the abutting portion 31 and extends to the outside of the quick-release member 3.

[0058] The reinforcing rib 2 is interference-fitted with the connecting hole 321.

[0059] like Figure 2 As shown, it can be understood that the connection notches 322 spaced apart around the connection holes 321 create a controllable elastic deformation area for the connection portion 32. When the reinforcing rib 2 is inserted, applying an assembly force causes the notched connection portion 32 to undergo a recoverable elastic expansion, providing space and deformation allowance for the smooth insertion of the reinforcing rib 2. After the assembly force is released, the resilient connection portion 32 naturally contracts, applying a uniform, durable, and reliable radial clamping force to the reinforcing rib 2, ensuring the immediate firmness of the connection.

[0060] Secondly, the multiple connection notches 322 spaced apart ensure that the connection part 32 is elastically and evenly distributed in the circumferential direction. This makes the clamping force applied to the reinforcing rib 2 after insertion and rebound more evenly distributed in the circumferential direction, avoiding the risk of local stress concentration or single-point locking failure.

[0061] It should be noted that during the grouting process, the grout can flow smoothly into and fill the connection gap 322. After the grout solidifies, it not only strengthens the wrapping and fixing of the reinforcing rib 2 itself, but also forms a strong interlocking structure between the grout, the reinforcing rib 2 and the quick-connect component 3, which significantly enhances the overall connection strength and rigidity between the reinforcing rib 2 and the quick-connect component 3.

[0062] Optionally, the inner sidewall of the connecting hole 321 is provided with a clamping protrusion 323, the clamping protrusion 323 protrudes inward relative to the sidewall of the connecting hole 321, and the reinforcing rib 2 is interference-fitted with the clamping protrusion 323 to clamp the reinforcing rib 2.

[0063] It is understandable that the clamping protrusion 323 can increase the friction between the clamping protrusion and the reinforcing rib 2, and the interference fit allows the quick-release part 3 to adapt to more reinforcing ribs 2 of different thicknesses, thus improving adaptability.

[0064] Furthermore, due to the action of the clamping protrusion 323, the sidewall of the connecting hole 321 will be inclined at a certain angle to the reinforcing rib 2 to form a gap, and the injected grout can enter this gap, which will improve the connection strength after curing.

[0065] Optionally, the surface of the clamping protrusion 323 is provided with anti-slip texture 324.

[0066] like Figure 2 As shown, it can be understood that by providing anti-slip texture 324 on the surface of the clamping protrusion 323, the friction force on the clamping rib can be increased, thereby facilitating assembly.

[0067] Optionally, a deformation groove 325 is formed in the inner wall of the connecting portion 32, and the deformation groove 325 is provided near the opening of the connecting hole 321 to reduce the wall thickness.

[0068] It is understood that the deformation groove 325 reduces the wall thickness, thereby improving the elastic deformation capability of the sidewall of the connecting hole 321.

[0069] It should be noted that after the slurry is poured into the deformation groove 325 and solidifies, it can also form a mechanical clamping on the quick-assembly part 3.

[0070] Optionally, the insertion part is a mounting hole 11 opened on the side wall of the housing 1, for inserting the quick-connect part 3;

[0071] The cross-sectional size of the mounting hole 11 is adapted to the cross-sectional size of the connecting part 32, and the connecting part 32 is inserted into the mounting hole 11;

[0072] The cross-sectional size of the abutment portion 31 is larger than the cross-sectional size of the mounting hole 11. The abutment portion 31 is located outside the housing 1 and abuts against the side wall of the housing 1.

[0073] It is understood that by opening the mounting hole 11 on the side wall of the housing 1, the connection and fixation between the housing 1 and the quick-connect component 3 can be achieved without adding other components. Furthermore, the opening of the mounting hole 11 is simple and has low manufacturing cost.

[0074] In some embodiments, the operator first places the reinforcing rib 2 inside the housing 1 and aligns one end of it with the mounting hole 11 on one side. The quick-connect fitting 3 is then inserted from outside the housing 1, aligned with the mounting hole 11, and the reinforcing rib 2 is inserted into the connecting hole 321 of the quick-connect fitting 3, thus completing the fixation on one side. At this point, another quick-connect fitting 3 is inserted from the other side and fitted onto the other end of the reinforcing rib 2, thus completing the fixation of the reinforcing rib 2. The operation is simple.

[0075] It is understood that the cross-sectional size of the abutment portion 31 is larger than the cross-sectional size of the mounting hole 11 to restrict the movement of the quick-release member 3, and the quick-release members 3 at both ends of the same reinforcing rib 2 jointly restrict the movement of the reinforcing rib 2 along its axial direction.

[0076] Optionally, the connecting part 32 is provided with a buckle 326 on its peripheral sidewall, and the buckle 326 is interference-fitted with the mounting hole 11;

[0077] When the quick-connector 3 is inserted into the mounting hole 11, the buckle 326 and the abutment part 31 are located on opposite sides of the housing 1, and both abut against the housing 1.

[0078] It is understood that, by means of the buckle 326 provided on the side wall of the connecting part 32 and the mounting hole 11, when the quick-connect part 3 is inserted into the mounting hole 11, the buckle 326 is compressed and undergoes controllable elastic deformation. When the quick-connect part 3 is inserted into place, that is, when the abutment part 31 is attached to the outer wall of the housing 1, the buckle 326 elastically recovers and abuts against the side wall of the housing 1 to restrict the movement of the quick-connect part 3.

[0079] The buckle 326 has a triangular cross-section.

[0080] Optionally, the plug-in part is a sliding plug-in member 12 provided on the inner side wall of the housing 1. The sliding plug-in member 12 has a plug-in interface 121 on its side wall. The plug-in interface 121 is arranged adjacent to the connected side wall of the housing 1. The plug-in interface 121 is connected to the limiting groove 122 provided on the sliding plug-in member 12.

[0081] The abutting part 31 is located within the limiting groove 122 to restrict the axial movement of the abutting part 31 along the connecting hole 321;

[0082] The limiting groove 122 has a sliding notch 123 on its side wall. The sliding notch 123 is adapted to the connecting part 32 to slide and connect the connecting part 32.

[0083] The number of sliding connectors 12 is multiple and corresponds to the number of quick-connect parts 3, so as to connect and fix the quick-connect parts 3.

[0084] like Figure 3 and Figure 4 As shown, it can be understood that when the abutting part 31 is located in the limiting groove 122, the two opposite sides of the abutting part 31 abut against the limiting groove 122 and the inner wall of the housing 1 respectively, so as to restrict the movement of the abutting part 31.

[0085] Using the sliding connector 12, the operator can first attach the quick-release parts 3 to both ends of the reinforcing rib 2 outside the housing 1, and then slide it into the sliding connector 12 to fix the reinforcing rib 2, thereby improving assembly efficiency.

[0086] In some embodiments, the opening direction of the connector is perpendicular to the opening direction of the housing.

[0087] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A quick-assembly structure for reinforcing counterweights, characterized in that, include: The housing has multiple insertion portions on its side walls; The number of reinforcing ribs is multiple and they are arranged in a crisscross pattern within the housing. The number of the insertion parts corresponds to the number of the reinforcing ribs. The reinforcing rib has quick-connect fittings at both ends, and the two quick-connect fittings are respectively movably connected to the insertion parts located on opposite side walls of the housing to clamp and fix the reinforcing rib. The reinforcing rib is connected and fixed to the housing through the quick-connect fittings at both ends.

2. The quick-assembly structure for the counterweight reinforcing ribs as described in claim 1, characterized in that, The quick-connect component includes an abutment portion and a connecting portion, which are integrally connected. The abutment portion abuts against the side wall of the housing to restrict the axial movement of the reinforcing rib. The connecting part is provided with a connecting hole, and the reinforcing rib is inserted into the connecting hole to connect with the quick-connect component. The connecting part restricts the reinforcing rib from moving radially.

3. The quick-assembly structure for the counterweight reinforcing ribs as described in claim 2, characterized in that, The reinforcing rib is fitted with the connecting hole with a clearance.

4. The quick-assembly structure for the counterweight reinforcing ribs as described in claim 2, characterized in that, The connecting hole is provided with connecting notches at intervals around its periphery. The connecting notches extend from the connecting part toward the side away from the abutting part and extend to the outside of the quick-connect component. The reinforcing rib is interference-fitted with the connecting hole.

5. The quick-assembly structure for the counterweight reinforcing ribs as described in claim 4, characterized in that, The inner sidewall of the connecting hole is provided with a clamping protrusion. The clamping protrusion protrudes inward relative to the sidewall of the connecting hole. The reinforcing rib is interference-fitted with the clamping protrusion to clamp the reinforcing rib.

6. The quick-assembly structure for the counterweight reinforcing ribs as described in claim 5, characterized in that, The surface of the clamping protrusion is provided with anti-slip texture.

7. The quick-assembly structure for the counterweight reinforcing ribs as described in any one of claims 4 to 6, characterized in that, The outer wall of the connecting part is recessed to form a deformation groove, which is located near the opening of the connecting hole to reduce the wall thickness.

8. The quick-assembly structure for the counterweight reinforcing ribs as described in claim 7, characterized in that, The insertion part is a mounting hole opened on the side wall of the housing, used to insert the quick-connect component; The cross-sectional size of the mounting hole is adapted to the cross-sectional size of the connecting part, and the connecting part is inserted into the mounting hole; The cross-sectional size of the abutting part is larger than the cross-sectional size of the mounting hole, and the abutting part is located outside the housing and abuts against the side wall of the housing.

9. The quick-assembly structure for the counterweight reinforcing ribs as described in claim 8, characterized in that, The connecting part is provided with a buckle on its peripheral sidewall, and the buckle is interference-fitted with the mounting hole. When the quick-connect component is inserted into the mounting hole, the buckle and the abutting part are located on opposite sides of the housing, and both abut against the housing.

10. The quick-assembly structure for the counterweight reinforcing ribs as described in claim 7, characterized in that, The plug-in part is a sliding plug-in component provided on the inner side wall of the housing. The side wall of the sliding plug-in component has a plug-in interface. The plug-in interface is arranged adjacent to the connected side wall of the housing. The plug-in interface is connected to the limiting groove provided on the sliding plug-in component. The abutting part is located within the limiting groove to restrict the axial movement of the abutting part along the connecting hole; The limiting groove has a sliding notch on its side wall, which is adapted to the connecting part to slide the connecting part. There are multiple sliding connectors, and the number of them corresponds to the number of quick-connect parts, so as to connect and fix the quick-connect parts.

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