Weak electric bridge arrangement wire arrangement device

Abstract

The utility model provides a weak bridge frame wire arrangement device, including the adjusting seat, the upper and lower both ends of adjusting seat are all open design, and the adjusting seat is hinged with the sheltering subassembly, the telescopic cover is provided with two, and two telescopic covers are fixed to the both sides of adjusting seat. Compared with prior art, the utility model has the beneficial effects as follows: telescopic cover design can adjust the interval between two wire arrangement seat flexibly, thereby adapts to the bridge frame of different width, need not to equip wire arrangement device alone for the bridge frame of different width, has reduced the use cost, and the tight line subassembly can drive first winding rod and second winding rod to move up and down through the cooperation of adjusting knob, transmission gear and other structures, and then flexibly adjusts the tension of cable, effectively solves the problem that the existing device cannot adjust the tightness of cable for different length cable, causes the cable to slacken and droop or over tight, guarantees the signal transmission stability of cable, reduces the damage of cable because of improper stress.

Description

Technical Field

[0001] This utility model is a cable management device for low-voltage cable trays, belonging to the field of cable management devices. Background Technology

[0002] In modern building engineering and industrial automation, low-voltage systems serve as the core of information transmission and control, and their stability directly impacts the overall system's operational efficiency. Low-voltage systems encompass multiple subsystems, including network communication, security monitoring, and smart home systems, involving a wide variety of cable types (such as network cables, fiber optic cables, signal cables, and control cables). Furthermore, with the increasing demand for smart technology, the number of cables is growing exponentially. To achieve orderly cable arrangement and protection, low-voltage cable trays are widely used as a key carrier for cable laying. Their function is to centrally collect and secure scattered cables, and to provide physical protection for them.

[0003] In practical applications, the width of cable trays varies significantly in different scenarios, and the number of cables and the length of individual cables also differ. However, most existing cable management devices adopt a fixed size design, which cannot flexibly adjust its length to adapt to different widths of cable trays according to actual needs, nor can it make targeted adjustments to the tightness of cables. Therefore, it is necessary to design a low-voltage cable tray management device. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a low-voltage cable tray management device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-voltage cable tray management device, comprising: The adjustment base has an open design at both the top and bottom, and a shielding component is hinged on the adjustment base; There are two telescopic sleeves, and the two telescopic sleeves are symmetrically fixed on both sides of the adjusting seat; There are two cable management seats, and the cross-section of the cable management seats is U-shaped. The two cable management seats are respectively fixedly connected to the side of the two telescopic sleeves away from the adjustment seat. The tensioning assembly is located inside the adjusting seat; Cable divider, located at the bottom of the inside of the cable management base; The cap is inserted into the top of the cable management socket; The vacuum suction cup is fixed in the center of the bottom of the cable management base.

[0006] Furthermore, the shielding assembly includes three shielding plates that are hinged to each other, and the shapes of the three shielding plates respectively match the shapes of the bottom of the adjusting seat, one end of the adjusting seat, and the top of the adjusting seat. The shielding plate that matches the shape of the bottom of the adjusting seat is hinged to the bottom edge of the adjusting seat. The two shielding plates that match the shapes of the bottom and top of the adjusting seat are each bonded with sealing gaskets that match the shapes of the openings at the upper and lower ends of the adjusting seat.

[0007] Furthermore, a locking plate is provided at the end of the baffle plate that matches the shape of the top of the adjusting seat away from the hinge axis, and a locking component is provided at the top of one end of the adjusting seat corresponding to the position of the locking plate. A slot is opened in the center of the locking plate, and the locking plate is hinged to the baffle plate.

[0008] Furthermore, the cable management seat has a U-shaped cross-section, and slots are provided on the top of the inner side of both sides of the cable management seat. Insertion slots are provided at both ends of the adjustment seat corresponding to the slots. The cover is inserted into the slots and insertion slots, and the length of the cover is the sum of the length of the cable management seat and half the length of the adjustment seat.

[0009] Furthermore, the tensioning assembly includes an adjustment knob, a first movable plate, a second movable plate, a transmission gear, a connecting rod, a first winding rod, a second winding rod, and a separator plate. The first movable plate is movably connected to the center of both ends of the adjustment seat, and the second movable plate is movably connected to the inner walls of the adjustment seat on both sides of the first movable plate. Both the first and second movable plates are vertically designed, and transmission teeth are provided on both sides of the first and second movable plates. A first winding rod is connected between the two first movable plates, and second winding rods are symmetrically arranged on both sides of the first winding rod. The two ends of the second winding rods are respectively connected to the two second movable plates, and multiple separator plates with corresponding positions are installed at equal intervals on both the first and second winding rods. A transmission gear is rotatably connected to the inner wall of the adjustment seat between the first and second movable plates, and the two sides of the transmission gear mesh with the transmission teeth of the first and second movable plates respectively. A connecting rod is connected between the two transmission gears on one side of the first movable plate, and one end of the connecting rod extends out of the adjustment seat and is fixedly connected to the adjustment knob.

[0010] Furthermore, a first sliding groove is vertically provided on the first movable plate below the first winding rod, and a second sliding groove is vertically provided on the second movable plate above the second winding rod. Limiting blocks are provided in both the first and second sliding grooves, and the cross-section of the limiting blocks is "T" shaped. The limiting blocks are fixedly connected to the inner wall of the adjusting seat.

[0011] Furthermore, the top of the wire separator is provided with multiple arc-shaped wire grooves at equal intervals along the length of the wire holder, and a partition is provided between adjacent arc-shaped wire grooves. The bottom of the cover is fixed with a wire pressing plate, and a matching groove is provided at the bottom of the wire pressing plate corresponding to the position of the partition.

[0012] Furthermore, the locking assembly includes a slotted locking plate, a fixing plate, a sleeve, a guide post, and a compression spring. The fixing plate is fixedly connected to the outer wall of the adjusting seat by bolts, and a sleeve is installed in the center of the fixing plate. A guide post is provided inside the sleeve, and the end of the guide post away from the fixing plate extends out of the sleeve and is rotatably connected to the slotted locking plate. An anti-detachment disc is provided at the end of the guide post near the fixing plate, and the outer diameter of the anti-detachment disc matches the inner diameter of the sleeve. A compression spring is wound around the outside of the guide post inside the sleeve, and the two ends of the compression spring abut against the anti-detachment disc and the inside of the sleeve, respectively. A protruding grip is provided at the end of the slotted locking plate away from the sleeve, and the shape of the slotted locking plate matches the slotted groove.

[0013] The beneficial effects of this utility model are: 1. The telescopic sleeve design allows for flexible adjustment of the distance between the two cable management seats, thus adapting to cable trays of different widths. This breaks the limitations of existing fixed-size cable management devices, eliminating the need for separate cable management devices for cable trays of different widths and reducing operating costs. The cable tensioning assembly, through the coordination of adjustment knobs, transmission gears, and other structures, can drive the first and second winding rods to move up and down, thereby flexibly adjusting the cable tension. This effectively solves the problem that existing devices cannot adjust the tension of cables of different lengths, resulting in cables slack or excessively tight. This ensures the stability of cable signal transmission and reduces damage to cables caused by improper stress.

[0014] 2. The arc-shaped cable groove and partition of the cable separator, together with the cover and the dividing plate of the winding rod, form a multi-divided structure, which can classify and organize cables of different types and uses, avoid tangling or confusion, and quickly locate the target cable during later maintenance. The cover can be quickly inserted and removed through the slot and plug slot, which is convenient for temporarily adding or removing cables. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the combined structure of a low-voltage cable tray cable management device according to the present invention; Figure 2 This is a schematic diagram showing the disassembled structure of a low-voltage cable tray cable management device according to this utility model; Figure 3 This is a schematic diagram of the cable tensioning assembly structure of a low-voltage cable tray management device according to this utility model; Figure 4This is a schematic diagram of the cover structure of a low-voltage cable tray cable management device according to the present invention; Figure 5 This is a schematic diagram of the cable management base structure of a low-voltage cable tray cable management device according to this utility model; Figure 6 This is a schematic diagram of the adjusting seat structure of a low-voltage cable tray cable management device according to this utility model; Figure 7 This is a schematic diagram of the locking component structure of a low-voltage cable tray management device according to the present invention.

[0016] In the picture: 1. Adjustment seat; 101. Insertion slot; 2. Shielding assembly; 201. Shielding plate; 202. Sealing gasket; 3. Telescopic sleeve; 4. Cable management connector; 401. Slot; 5. Vacuum suction cup; 6. Cap; 601. Pressure plate; 602. Groove; 7. Tightening assembly; 8. Locking plate; 801. Slotted groove; 9. Wire separator; 901. Partition plate; 902. Arc-shaped wire groove; 10. Limit block; 11. Locking assembly; 1101. Single-plate lock; 11011. Handle; 1102. Fixing plate; 1103. Sleeve; 1104. Guide post; 11041. Anti-detachment disc; 1105. Compression spring; 12. Adjust the knob; 13. First movable plate; 1301. First slide rail; 14. Second movable plate; 1401. Second slide rail; 15. Transmission gears; 16. Connecting rod; 17. First winding rod; 18. Second winding rod; 19. Divider plate. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Please see Figures 1 to 7This utility model provides a technical solution: a low-voltage cable tray cable management device, including an adjusting base 1, with open designs at both the top and bottom, and a shielding component 2 hinged to the adjusting base 1; two telescopic sleeves 3 are provided, and the two telescopic sleeves 3 are symmetrically fixed on both sides of the adjusting base 1; two cable management seats 4 are provided, and the cross-section of the cable management seats 4 is U-shaped; the two cable management seats 4 are respectively fixedly connected to the side of the two telescopic sleeves 3 away from the adjusting base 1; a cable tightening component 7 is provided inside the adjusting base 1; a cable separator 9 is provided at the bottom of the inside of the cable management seat 4; and a cover 6 is inserted into the top of the inside of the cable management seat 4. The vacuum suction cup 5 is fixed at the center of the bottom of the cable management base 4. The two cable management bases 4 are connected on both sides of the adjusting base 1 by the telescopic sleeve 3. With the telescopic characteristics of the telescopic sleeve 3, the distance between the two cable management bases 4 can be freely adjusted, which can easily adapt to low-voltage cable trays of different widths. There is no need to replace the entire device due to differences in cable tray width, which greatly improves the versatility of the device in different installation scenarios and reduces the cost of equipment purchase and replacement. The vacuum suction cup 5 at the bottom of the cable management base 4 can quickly adhere to the cable tray or the mounting surface without complicated drilling, bolt fixing and other operations, which simplifies the installation process and saves installation time.

[0019] Please see Figure 2 and Figure 6 The shielding assembly 2 includes three mutually hinged shielding plates 201, the shapes of which respectively match the bottom, one end, and top of the adjusting seat 1. The shielding plate 201 that matches the bottom of the adjusting seat 1 is hinged to the bottom edge of the adjusting seat 1. Sealing gaskets 202 that match the shapes of the openings at the top and bottom of the adjusting seat 1 are glued to the two shielding plates 201 that match the bottom and top of the adjusting seat 1. The shape of each shielding plate 201 corresponds to the bottom, one end, and the top of the adjusting seat 1. The shape of one end and the top matches, which can fully cover the key area of ​​the adjustment seat 1. It can effectively prevent external dust, moisture, debris and other objects from entering the interior of the adjustment seat 1, providing reliable protection for the internal tensioning assembly 7 and cables, reducing the risk of equipment failure caused by environmental factors. When it is necessary to adjust or repair the internal cables or tensioning assembly 7 of the adjustment seat 1, the cover plate 201 can be easily opened; after the operation is completed, it can be quickly closed to achieve sealing protection, taking into account the protection requirements and the convenience of daily maintenance, and improving the practicality of the overall device.

[0020] Please see Figure 2 and Figure 6A locking piece 8 is provided at the end of the shield 201 that matches the top shape of the adjusting seat 1 away from the hinge axis. A locking component 11 is provided at the top of one end of the adjusting seat 1 corresponding to the position of the locking piece 8. A slot 801 is opened in the center of the locking piece 8, and the locking piece 8 is hinged to the shield 201. The shield 201 can be firmly fixed in the closed state by the cooperation of the locking piece 8 and the locking component 11 on the adjusting seat 1. This prevents the shield 201 from being opened accidentally due to external forces such as vibration or collision, ensuring its continuous shielding of the adjusting seat 1 and guaranteeing the stability of the protection.

[0021] Please see Figure 2 The cable management base 4 has a U-shaped cross-section, and slots 401 are provided on the top of the inner side of both sides of the cable management base 4. Plug-in slots 101 are provided at both ends of the adjustment base 1 corresponding to the slots 401. The cover 6 is plugged into the slots 401 and the plug-in slots 101. The length of the cover 6 is the sum of the length of the cable management base 4 and half the length of the adjustment base 1. The slots 401 on the top of the inner side of both sides of the cable management base 4 correspond to the plug-in slots 101 at both ends of the adjustment base 1. The cover 6 is fixed by plugging into these two types of slots. When it is necessary to inspect or adjust the internal cables, the cover 6 can be easily pulled out, greatly improving the convenience of maintenance.

[0022] Please see Figure 2 and Figure 3The tensioning assembly 7 includes an adjustment knob 12, a first movable plate 13, a second movable plate 14, a transmission gear 15, a connecting rod 16, a first winding rod 17, a second winding rod 18, and a separator plate 19. The first movable plate 13 is movably connected to the center of both ends of the adjustment seat 1, and the second movable plate 14 is movably connected to the inner wall of the adjustment seat 1 on both sides of the first movable plate 13. Both the first movable plate 13 and the second movable plate 14 are vertically designed, and transmission gears are provided on both sides of the first movable plate 13 and the second movable plate 14. A first winding rod 17 is connected between the two first movable plates 13, and second winding rods 18 are symmetrically arranged on both sides of the first winding rod 17. The two ends of the second winding rods 18 are respectively connected to the two second movable plates 14, and multiple winding rods are installed at equal intervals on the first winding rod 17 and the second winding rod 18. The corresponding partition plate 19, the inner wall of the adjustment seat 1 between the first movable plate 13 and the second movable plate 14 are rotatably connected to the transmission gears 15, and the two sides of the transmission gears 15 are respectively engaged with the transmission teeth of the first movable plate 13 and the second movable plate 14. The two transmission gears 15 on one side of the first movable plate 13 are connected by a connecting rod 16, and one end of the connecting rod 16 extends out of the adjustment seat 1 and is fixedly connected to the adjustment knob 12. When the adjustment knob 12 is rotated, the connecting rod 16 drives the transmission gears 15 to rotate, thereby driving the first movable plate 13 and the second movable plate 14 to move, realizing the vertical adjustment of the first winding rod 17 and the second winding rod 18. This design can precisely control the tightness of the cable and can be flexibly adjusted according to different lengths and types of cables, avoiding damage to the cable due to excessive looseness or excessive tightness, and meeting diverse cable management needs.

[0023] Please see Figure 3 and Figure 6 A first sliding groove 1301 is vertically provided on the first movable plate 13 below the first winding rod 17, and a second sliding groove 1401 is vertically provided on the second movable plate 14 above the second winding rod 18. Limiting blocks 10 are provided in both the first sliding groove 1301 and the second sliding groove 1401, and the cross-section of the limiting blocks 10 is designed in a "T" shape. The limiting blocks 10 are fixedly connected to the inner wall of the adjusting seat 1. The first sliding groove 1301 on the first movable plate 13 and the second sliding groove 1401 on the second movable plate 14 cooperate with the limiting blocks 10 fixed to the inner wall of the adjusting seat 1 to provide a clear guiding path for the movement of the first movable plate 13 and the second movable plate 14. The limiting blocks 10 are embedded in the sliding grooves, which can strictly limit the movement of the first movable plate 13 and the second movable plate 14 to only in the vertical direction, avoiding lateral deviation or shaking during the movement, ensuring the accuracy of the adjustment direction of the first winding rod 17 and the second winding rod 18, and ensuring that the cable tension adjustment is precise and controllable.

[0024] Please see Figure 4 and Figure 5The top of the cable divider 9 has multiple arc-shaped cable grooves 902 evenly spaced along the length of the cable management base 4, and a partition 901 is provided between each adjacent arc-shaped cable groove 902. The bottom of the cover 6 is fixed with a pressure plate 601, and the bottom of the pressure plate 601 has a matching groove 602 at the position corresponding to the partition 901. The partition 901 between adjacent cable grooves can clearly separate different types and uses of cables, such as network cables and signal cables, into independent spaces. This design physically avoids cables from tangling and crossing, giving each cable its own "channel". This not only facilitates quick identification and maintenance later, but also reduces signal interference between cables and ensures the stable operation of the low-voltage system. The pressure plate 601 at the bottom of the cover 6 is precisely matched with the structure of the cable divider 9, and the groove 602 at the bottom of the pressure plate 601 corresponding to the position of the partition 901 can perfectly fit with the partition 901 when the cover 6 is closed. At this time, the pressure plate 601 will exert vertical pressure on the cable in the arc-shaped cable groove 902, firmly fixing the cable in the groove, effectively preventing the cable from shifting or falling off due to external forces such as vibration and pulling, and ensuring the durability of the cable management effect.

[0025] Please see Figure 1 and Figure 2The locking assembly 11 includes a single-plate locking plate 1101, a fixing plate 1102, a sleeve 1103, a guide post 1104, and a compression spring 1105. The fixing plate 1102 is fixedly connected to the outer wall of the adjusting seat 1 by bolts, and the sleeve 1103 is installed in the center of the fixing plate 1102. The guide post 1104 is provided inside the sleeve 1103, and the end of the guide post 1104 away from the fixing plate 1102 extends out of the sleeve 1103 and rotates with the single-plate locking plate 1101. Next, an anti-detachment disc 11041 is provided at one end of the guide post 1104 near the fixing plate 1102, and the outer diameter of the anti-detachment disc 11041 matches the inner diameter of the sleeve 1103. A compression spring 1105 is wound around the outside of the guide post 1104 inside the sleeve 1103, and the two ends of the compression spring 1105 abut against the anti-detachment disc 11041 and the inside of the sleeve 1103, respectively. A protruding handle 110 is provided at the end of the slotted locking plate 1101 away from the sleeve 1103. 11. The shape of the single-plate locking plate 1101 matches the single-slot groove 801. When it is necessary to lock the cover plate 201, first squeeze the handle 11011 to pull the single-plate locking plate 1101 outward, which will drive the guide post 1104 and the anti-disengagement plate 11041 to move away from the fixed plate 1102. At this time, the compression spring 1105 is further compressed, and the single-plate locking plate 1101 passes through the single-slot groove 801. Then rotate the single-plate locking plate 1101 so that its plate surface forms a perpendicular shape with the locking plate 8. When the lever 11011 is released, the spring force of the compression spring 1105 is released, pulling the anti-detachment disc 11041, guide post 1104 and the single-plate locking plate 1101 back to the direction closer to the fixing plate 1102, so that the single-plate locking plate 1101 is tightly engaged with the inner side of the locking piece 8, completing the locking and forming a double fixation of "spring tension + mechanical cross engagement", which can effectively resist external impact and ensure that the shield 201 is not easy to loosen during long-term use, and the protective effect is stable.

[0026] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-voltage cable tray cable management device, characterized in that, include: The adjustment seat (1) has an open design at both the top and bottom, and a shielding component (2) is hinged on the adjustment seat (1). There are two telescopic sleeves (3), and the two telescopic sleeves (3) are symmetrically fixed on both sides of the adjusting seat (1); There are two cable management seats (4), and the cross section of the cable management seat (4) is designed in the shape of "U". The two cable management seats (4) are respectively fixedly connected to the side of the two telescopic sleeves (3) away from the adjustment seat (1); The tensioning assembly (7) is located inside the adjusting seat (1); A wire divider (9) is located at the bottom of the inside of the wire organizer (4); The cap (6) is inserted into the top of the cable management base (4); The vacuum suction cup (5) is fixed at the center of the bottom of the cable management base (4).

2. The cable management device for low-voltage cable trays according to claim 1, characterized in that: The shielding assembly (2) includes three shielding plates (201) that are hinged to each other. The shapes of the three shielding plates (201) are respectively matched with the bottom of the adjusting seat (1), one end of the adjusting seat (1) and the top of the adjusting seat (1). The shielding plate (201) that matches the bottom of the adjusting seat (1) is hinged to the bottom edge of the adjusting seat (1). The two shielding plates (201) that match the bottom and top of the adjusting seat (1) are each glued with sealing gaskets (202) that match the shapes of the openings at the top and bottom ends of the adjusting seat (1).

3. A low-voltage cable tray cable management device according to claim 2, characterized in that: A locking piece (8) is provided at one end of the baffle plate (201) that matches the top shape of the adjusting seat (1) away from the hinge axis, and a locking component (11) is provided at the top of one end of the adjusting seat (1) corresponding to the position of the locking piece (8). A slot (801) is opened at the center of the locking piece (8), and the locking piece (8) is hinged to the baffle plate (201).

4. The low-voltage cable tray cable management device according to claim 1, characterized in that: The cable management seat (4) has a "U" shaped cross section, and slots (401) are provided on the top of the inner side of both sides of the cable management seat (4). Insertion slots (101) are provided at both ends of the adjustment seat (1) corresponding to the slots (401). The cover (6) is inserted into the slots (401) and the insertion slots (101), and the length of the cover (6) is the sum of the length of the cable management seat (4) and half the length of the adjustment seat (1).

5. A low-voltage cable tray cable management device according to claim 1, characterized in that: The tensioning assembly (7) includes an adjustment knob (12), a first movable plate (13), a second movable plate (14), a transmission gear (15), a connecting rod (16), a first winding rod (17), a second winding rod (18), and a separator plate (19). The first movable plate (13) is movably connected to the center of both ends of the adjustment seat (1), and the second movable plate (14) is movably connected to the inner wall of the adjustment seat (1) on both sides of the first movable plate (13). Both the first movable plate (13) and the second movable plate (14) are vertically designed, and transmission teeth are provided on both sides of the first movable plate (13) and the second movable plate (14). A first winding rod (17) is connected between the two first movable plates (13), and the first winding rod (18)... 7) is symmetrically provided with a second winding rod (18) on both sides. The two ends of the second winding rod (18) are respectively connected to two second movable plates (14). The first winding rod (17) and the second winding rod (18) are each equally spaced with a number of corresponding partition plates (19). The inner wall of the adjustment seat (1) between the first movable plate (13) and the second movable plate (14) is rotatably connected with a transmission gear (15). The two sides of the transmission gear (15) are respectively meshed with the transmission teeth of the first movable plate (13) and the second movable plate (14). A connecting rod (16) is connected between the two transmission gears (15) on one side of the first movable plate (13). One end of the connecting rod (16) extends out of the adjustment seat (1) and is fixedly connected to the adjustment knob (12).

6. A low-voltage cable tray cable management device according to claim 5, characterized in that: A first sliding groove (1301) is vertically provided on the first movable plate (13) below the first winding rod (17), and a second sliding groove (1401) is vertically provided on the second movable plate (14) above the second winding rod (18). Limiting blocks (10) are provided in both the first sliding groove (1301) and the second sliding groove (1401), and the cross section of the limiting block (10) is "T" shaped. The limiting block (10) is fixedly connected to the inner wall of the adjusting seat (1).

7. A low-voltage cable tray cable management device according to claim 1, characterized in that: The top of the wire divider (9) is provided with multiple arc-shaped wire grooves (902) at equal intervals along the length of the wire guide (4), and a partition (901) is provided between adjacent arc-shaped wire grooves (902). The bottom of the cover (6) is fixed with a wire pressing plate (601), and a matching groove (602) is provided at the bottom of the wire pressing plate (601) corresponding to the position of the partition (901).

8. A low-voltage cable tray cable management device according to claim 3, characterized in that: The locking assembly (11) includes a single-plate locking plate (1101), a fixing plate (1102), a sleeve (1103), a guide post (1104), and a compression spring (1105). The fixing plate (1102) is fixedly connected to the outer wall of the adjusting seat (1) by bolts, and the sleeve (1103) is installed in the center of the fixing plate (1102). The guide post (1104) is provided inside the sleeve (1103), and the end of the guide post (1104) away from the fixing plate (1102) extends out of the sleeve (1103) and is rotatably connected to the single-plate locking plate (1101). The guide post (1104) is close to the... One end of the fixing plate (1102) is provided with an anti-detachment disc (11041), and the outer diameter of the anti-detachment disc (11041) matches the inner diameter of the sleeve (1103). A compression spring (1105) is wound around the outside of the guide post (1104) inside the sleeve (1103), and the two ends of the compression spring (1105) abut against the anti-detachment disc (11041) and the inside of the sleeve (1103) respectively. The end of the locking plate (1101) away from the sleeve (1103) is provided with an outwardly protruding handle (11011), and the shape of the locking plate (1101) matches the slot (801).

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