Cable tray and installation method

Abstract

The application discloses a cable bridge and a mounting method, which comprises a support plate and a frame body one and a frame body two connected to the top of the support plate. The top of the support plate is fixed with a limiting plate for limiting the frame body one and the frame body two. The cover plate is connected with a pressing mechanism for pressing the top of the frame body one and the frame body two. The cover plate is connected with a driving mechanism for driving the cover plate to move up and down. The support plate is connected with a side pressing mechanism for pressing the side of the frame body one and the frame body two. The side pressing mechanism comprises a spring one, a driving seat, a fixed cylinder, a pressing block and a spring two. The cover plate is used for driving the driving seat to move along the length direction of the support plate. The application can improve the stability of the connection between the frame body one and the frame body two. The relative pressing of the two sealing rubber pads and the use of the cover plate can effectively prevent the invasion of external dust and impurities and achieve good isolation effect. Meanwhile, the mounting and fixing of the frame body one and the frame body two are realized, the operation is flexible and coherent, and the practicability is high.

Description

Technical Field

[0001] This invention relates to the field of cable tray technology, specifically to a cable tray and its installation method. Background Technology

[0002] Cable trays are classified into various structures such as trough type, tray type, ladder type, and mesh type, and consist of supports, brackets, and installation accessories. Cable trays inside buildings can be installed independently or laid on various building (structure) supports and pipe rack supports. They should be characterized by simple structure, beautiful appearance, flexible configuration, and convenient maintenance. All parts must be galvanized. Cable trays installed outdoors are also permitted.

[0003] When installing and connecting existing cable trays, bolts or rivets are often used for fixing. There are a lot of bolts and rivets, which require workers to operate them one by one. This not only increases the workload, but also allows external dust and impurities to easily enter the interior from the connection point when two cable trays are connected, causing significant pollution inside. Summary of the Invention

[0004] The purpose of this invention is to provide a cable tray and installation method, which improves the stability of the connection between the first and second frame bodies. The two sealing gaskets are pressed together, and with the use of the cover plate, the intrusion of external dust and impurities can be effectively prevented, achieving a good isolation effect. At the same time, it also achieves the advantages of flexible and smooth installation and fixing of the first and second frame bodies, and solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cable tray, comprising a support plate and a frame body one and a frame body two connected to the top of the support plate. A limiting plate for limiting the position of the frame body one and the frame body two is fixed to the top of the support plate. A liftable cover plate is slidably connected to the limiting plate. A pressing mechanism for pressing the top of the frame body one and the frame body two is connected to the cover plate, and a driving mechanism for driving the cover plate to rise and fall is also connected to the support plate. A side pressing mechanism for pressing the sides of the frame body one and the frame body two is connected to the support plate. The side pressing mechanism includes a spring one, a drive seat, a fixed cylinder, a pressure block, and a spring two. The spring one drives the drive seat to move away from the limiting plate. The fixed cylinder is fixed to one side of the drive seat. The pressure block is slidably connected to the fixed cylinder. The spring two drives the pressure block to move away from the drive seat. The cover plate drives the drive seat to move along the length of the support plate.

[0006] When frame one is connected to frame two, the clamping mechanism presses against the top of frame one and frame two, and the clamping block presses against the sides of frame one and frame two.

[0007] Preferably, the pressing mechanism includes two pressing heads, two pressing surfaces, two inner cavities, and two springs. The inner cavities are disposed within the limiting plate, and the pressing heads are slidably connected to the corresponding inner cavities. The two pressing heads are distributed opposite to each other. The springs are used to drive the pressing heads to move towards the support plate. The pressing surfaces are disposed at the bottom of the pressing heads.

[0008] Preferably, the third spring is located inside the inner cavity, and both ends of the third spring are connected to the cover plate and the pressure head.

[0009] Preferably, both the first frame and the second frame are provided with a groove 1 at their tops, and the two grooves 1 are matched with two pressure heads. The bottom of the groove 1 is provided with an inclined surface 1, and the inclined surface 1 is matched with a pressing surface 2. When the first frame and the second frame are connected, the pressure head is pressed against the corresponding groove 1, and the pressing surface 2 is pressed against the corresponding inclined surface 1.

[0010] Preferably, there are four side-pressing mechanisms, and each side-pressing mechanism further includes a spring seat, an oblique hole, a sliding column, a drive plate, and a sliding block. The spring seat is fixed to the top of the support plate, and both ends of the spring are connected to the drive seat and the spring seat. The oblique hole is provided in the drive seat. The sliding column is slidably connected to the drive seat and is fixed to the drive plate. The end of the drive plate is connected to the cover plate. One end of the pressure block is connected to the sliding block, and the sliding block is slidably connected inside the fixed cylinder.

[0011] Preferably, the second spring is located inside the fixed cylinder, and both ends of the second spring are connected to the sliding block and the fixed cylinder.

[0012] Preferably, the other end of the pressure block is provided with a pressing surface, and the two sides of the frame one and the frame two are provided with grooves two. The grooves two are provided with inclined surfaces two. The inclined surfaces two match the corresponding pressing surfaces one. The grooves two match the corresponding ends of the pressure blocks. When the frame one and the frame two are connected, the ends of the pressure blocks are pressed against the corresponding grooves two, and the pressing surfaces one are pressed against the corresponding inclined surfaces two.

[0013] Preferably, both the first frame and the second frame are connected to a sealing gasket at their ends.

[0014] Preferably, the driving mechanism includes two driving columns, two push-pull plates, a threaded seat, a stud, and a handle. The handle is used to drive the stud to rotate. The end of the stud is rotatably connected to the bottom of the support plate. The threaded seat is threadedly connected to the stud. The two ends of the push-pull plates are fixedly connected to the driving columns and the threaded seat. The driving columns pass through the limiting plate and the support plate, and the top of the driving columns is connected to the cover plate.

[0015] A method for installing a cable tray, characterized by comprising the following steps:

[0016] Step 1: Insert frame 1 and frame 2 between the two limiting plates, so that the ends of frame 1 and frame 2 are in contact and the two opposite sealing gaskets are connected.

[0017] Step 2: Rotate the handle to drive the stud to rotate, causing the threaded seat to move down, applying a downward pulling force to the two push-pull plates, which in turn drives the two drive columns to move down. That is, the cover plate and drive plate move down synchronously, and the two pressure heads move towards the corresponding two grooves. The drive plate drives the sliding column to move along the length of the inclined hole, driving the drive seat to move towards the limit plate. Spring 1 is gradually stretched, and the pressure block moves towards the corresponding groove 2.

[0018] Step 3: When the threaded seat descends to the appropriate position, the pressure head presses against the corresponding groove one, the cover plate presses against the top of the limit plate and connects with frame one and frame two, the end of the pressure block presses against the corresponding groove two, the spring two is compressed, improving the stability of the connection between frame one and frame two, and the two sealing gaskets press against each other, which also realizes the installation and fixation of frame one and frame two.

[0019] Step 4: Rotate the handle to rotate the stud, causing the threaded seat to rise. The drive column drives the cover plate and drive plate to rise synchronously, and the pressure head separates from the corresponding groove one. The drive plate drives the sliding column back to its original position, causing the drive seat to move away from the limit plate. The pressure block separates from the corresponding groove two. At this time, frame one and frame two are in a relaxed state, which is convenient for disassembly.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention is provided with a pressing mechanism and a side pressing mechanism. The pressing mechanism includes two pressing heads, two pressing surfaces, two inner cavities, and two springs. The side pressing mechanism includes a spring, a drive seat, a fixed cylinder, a pressing block, a spring, a spring seat, an oblique hole, a sliding column, a drive plate, and a sliding block. The frame one and frame two are placed between two limiting plates to achieve initial limiting. Rotating the handle drives the stud to rotate, causing the threaded seat to move down, which in turn drives the two drive columns, the cover plate, and the drive plate to move down synchronously. The two pressing heads move in the direction of the corresponding two grooves. The drive plate drives the sliding column to move along the length direction of the oblique hole, driving the drive seat towards the limiting plate. The movement of the fixed cylinder and the pressure block in the direction of the movement allows the two frames to move closer together. When the threaded seat descends to the appropriate position, the pressure head presses against the corresponding groove, the cover plate presses against the top of the limiting plate, and connects with the two frames. The end of the pressure block presses against the corresponding groove, and the spring is compressed, improving the stability of the connection between the two frames. The two sealing gaskets press against each other, and with the use of the cover plate, the intrusion of external dust and impurities can be effectively prevented, achieving a good isolation effect. At the same time, the installation and fixation of the two frames can be achieved. The operation is flexible and smooth, and it is highly practical. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the side pressure mechanism of the present invention;

[0023] Figure 3 This is a schematic diagram of the connection structure between the drive seat and the pressure block of the present invention;

[0024] Figure 4 This is a schematic diagram of the bottom structure of the support plate of the present invention;

[0025] Figure 5 This is a schematic diagram of the connection structure between the pressure head and the cover plate of the present invention;

[0026] Figure 6 This is a schematic diagram of the locking structure between frame one and frame two of the present invention;

[0027] Figure 7 This is a schematic diagram of the frame one and frame two structures of the present invention.

[0028] In the diagram: 1. Support plate; 2. Cover plate; 3. Limiting plate; 4. Spring seat; 5. Drive seat; 6. Fixed cylinder; 7. Pressure block; 8. Guide hole; 9. Stud; 10. Handle; 11. Drive plate; 12. Spring 1; 13. Angled hole; 14. Sliding column; 15. Pressing surface 1; 16. Spring 2; 17. Sliding block; 18. Frame 1; 19. Frame 2; 20. Sealing gasket; 21. Groove 1; 22. Angled surface 1; 23. Groove 2; 24. Angled surface 2; 25. Pressure head; 26. Pressing surface 2; 27. Drive column; 28. Threaded seat; 29. ​​Push-pull plate; 30. Spring 3; 31. Inner cavity. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1 to 7The present invention provides a cable tray, including a support plate 1 and a frame 18 and a frame 2 19 connected to the top of the support plate 1. A limiting plate 3 for limiting the frame 18 and the frame 2 19 is fixed on the top of the support plate 1. The limiting plate 3 is perpendicular to the support plate 1. When the frame 18 and the frame 2 19 are in the locked state, the cover plate 2 presses against the limiting plate 3. The limiting plate 3 is slidably connected to the liftable cover plate 2, which improves the stability of the cover plate 2's lifting and lowering. The cover plate 2 is connected to a pressing mechanism for pressing the top of the frame 18 and the frame 2 19, and the cover plate 2 is also connected to a drive mechanism for driving the cover plate 2 to lift and lower. The support plate 1 is connected to a side pressing mechanism for pressing the sides of the frame 18 and the frame 2 19. The side pressing mechanism includes a spring 12, a drive seat 5, a fixed cylinder 6, a pressure block 7, and a spring 2 16. The spring 12 is used to drive the drive seat 5 to move away from the limiting plate 3. The spring 12 allows the drive seat 5 to move back and forth smoothly and is not easy to jam. When the cover plate 2 descends, the drive plate 11 drives the drive seat 5 to move closer to the limiting plate 3. The spring 12 is gradually stretched, preventing the drive seat 5 from moving forward. That is, rotating the handle 10 requires more effort, which makes it easier to control the position of the cover plate 2. The fixed cylinder 6 is fixed to one side of the drive seat 5, and the pressure block 7 is slidably connected to the fixed cylinder 6, which allows the pressure block 7 to reciprocate steadily. The spring 16 is used to drive the pressure block 7 to move away from the drive seat 5, and the cover plate 2 is used to drive the drive seat 5 to move along the length of the support plate 1.

[0031] Place frame 18 and frame 2 19 between the two limiting plates 3 to achieve initial positioning. Rotate handle 10 to drive stud 9 to rotate, causing threaded seat 28 to move down, which in turn drives two drive columns 27, cover plate 2, and drive plate 11 to move down synchronously. Two pressure heads 25 move towards the corresponding two grooves 1 21. Drive plate 11 drives sliding column 14 to move along the length of inclined hole 13, driving drive seat 5 to move towards limiting plate 3. That is, fixed cylinder 6 and pressure block 7 move forward synchronously. Pressing surface 2 26 presses against the corresponding inclined surface 1 22, and pressing surface 1 15 presses against the corresponding inclined surface 2 24, which can bring frame 18 and frame 2 19 closer to each other. When the threaded seat 28 descends to the appropriate position, the pressure head 25 presses against the corresponding groove 21, the cover plate 2 presses against the top of the limiting plate 3 and connects with the frame 18 and the frame 2 19, the end of the pressure block 7 presses against the corresponding groove 23, the spring 2 16 is compressed, improving the stability of the connection between the frame 18 and the frame 2 19, the two sealing gaskets 20 press against each other, and with the use of the cover plate 2, it can effectively prevent the intrusion of external dust and impurities, achieving a good isolation effect, and at the same time realize the installation and fixation of the frame 18 and the frame 2 19, the operation is flexible and smooth, and the connection between the frame 18 and the frame 2 19 is precise.

[0032] The pressing mechanism includes two pressing heads 25, two pressing surfaces 26, two inner cavities 31, and two springs 30. The inner cavities 31 are located inside the limiting plate 3. The pressing heads 25 are slidably connected to the corresponding inner cavities 31. The two pressing heads 25 are distributed opposite to each other. The springs 30 are used to drive the pressing heads 25 to move closer to the support plate 1. The pressing surfaces 26 are located at the bottom of the pressing heads 25. The inner cavities 31 guide the pressing heads 25, which can make the pressing heads 25 rise and fall steadily.

[0033] Spring 30 is located inside the inner cavity 31, and both ends of spring 30 are connected to cover plate 2 and pressure head 25.

[0034] Both frame 18 and frame 29 have a groove 21 on their tops. The two grooves 21 match the two pressure heads 25. The bottom of the groove 21 has a slope 22, which matches the pressing surface 26. When frame 18 and frame 29 are connected, the pressure head 25 presses against the corresponding groove 21, and the pressing surface 26 presses against the corresponding slope 22.

[0035] There are four side-pressing mechanisms, and each side-pressing mechanism also includes a spring seat 4, an oblique hole 13, a sliding column 14, a drive plate 11, and a sliding block 17. The spring seat 4 is fixed to the top of the support plate 1. The two ends of the spring 12 are connected to the drive seat 5 and the spring seat 4. The oblique hole 13 is set in the drive seat 5. The sliding column 14 is slidably connected to the drive seat 5 and is fixed to the drive plate 11. The end of the drive plate 11 is connected to the cover plate 2. One end of the pressure block 7 is connected to the sliding block 17. The sliding block 17 is slidably connected inside the fixed cylinder 6. The highest point of the oblique hole 13 is f, and the lowest point is e. When the sliding column 14 moves towards point e, it can drive the drive seat 5 to move towards the limiting plate 3; when the sliding column 14 moves towards point f, it can drive the drive seat 5 to move away from the limiting plate 3.

[0036] Spring 16 is located inside the fixed cylinder 6, and both ends of spring 16 are connected to the sliding block 17 and the fixed cylinder 6.

[0037] The other end of the pressure block 7 is provided with a pressing surface 15. The two sides of the frame 18 and the frame 29 are provided with grooves 23. The grooves 23 are provided with inclined surfaces 24. The inclined surfaces 24 match the corresponding pressing surfaces 15. The grooves 23 match the corresponding ends of the pressure block 7. When the frame 18 and the frame 2 19 are connected, the ends of the pressure block 7 are pressed against the corresponding grooves 23, and the pressing surfaces 15 are pressed against the corresponding inclined surfaces 24.

[0038] Both the ends of frame 18 and frame 29 are connected to sealing gaskets 20, which are made of rubber.

[0039] The drive mechanism includes two drive columns 27, two push-pull plates 29, a threaded seat 28, a stud 9, and a handle 10. The handle 10 is used to drive the stud 9 to rotate. The end of the stud 9 is rotatably connected to the bottom of the support plate 1. The threaded seat 28 is threadedly connected to the stud 9. The two ends of the push-pull plate 29 are fixedly connected to the drive columns 27 and the threaded seat 28. The drive columns 27 pass through the limiting plate 3 and the support plate 1, and the top of the drive columns 27 is connected to the cover plate 2.

[0040] The rotatable handle 10 drives the stud 9 to rotate, causing the threaded seat 28 to move upward, which in turn drives the two push-pull plates 29 to move upward. The push-pull plates 29 apply an upward pushing force to the drive column 27, which in turn drives the cover plate 2 and drive plate 11 to move upward. The drive plate 11 applies an upward pulling force to the sliding column 14, which moves towards point f, driving the drive seat 5 to return to its original position. This causes the fixed cylinder 6 and the pressure block 7 to return to their original positions simultaneously. The pressure block 7 gradually separates from the corresponding groove 23, and the pressure head 25 separates from the corresponding groove 21, so that the frame 18 and frame 29 are in a relaxed state, making them easy to disassemble and separate.

[0041] The limiting plate 3 has a guide hole 8 that matches the pressure block 7, which plays a good limiting role for the pressure block 7. When the frame 18 and the frame 2 19 are connected and stable, the end of the pressure block 7 passes through the guide hole 8 and is pressed into the corresponding groove 23.

[0042] A method for installing a cable tray includes the following steps:

[0043] Step 1: Insert frame 18 and frame 2 19 between the two limiting plates 3, so that the ends of frame 18 and frame 2 19 are in contact and the two opposite sealing gaskets 20 are connected.

[0044] Step 2: Rotate the handle 10 to drive the stud 9 to rotate, causing the threaded seat 28 to move down, applying a downward pulling force to the two push-pull plates 29, which in turn drives the two drive columns 27 to move down, that is, the cover plate 2 and the drive plate 11 move down synchronously, the two pressure heads 25 move towards the corresponding two grooves 1 21, the drive plate 11 drives the sliding column 14 to move along the length direction of the inclined hole 13, driving the drive seat 5 to move towards the direction closer to the limit plate 3, the spring 1 12 is gradually stretched, and the pressure block 7 moves towards the direction closer to the corresponding groove 2 23;

[0045] Step 3: When the threaded seat 28 descends to the appropriate position, the pressure head 25 presses against the corresponding groove 21, the cover plate 2 presses against the top of the limiting plate 3 and is connected to the frame 18 and the frame 2 19, the end of the pressure block 7 presses against the corresponding groove 23, the spring 2 16 is compressed, improving the stability of the connection between the frame 18 and the frame 2 19, and the two sealing gaskets 20 press against each other, which also realizes the installation and fixation of the frame 18 and the frame 2 19.

[0046] Step 4: Rotate the handle 10 to drive the stud 9 to rotate, causing the threaded seat 28 to rise. The drive column 27 drives the cover plate 2 and drive plate 11 to rise synchronously. The pressure head 25 separates from the corresponding groove 1 21. The drive plate 11 drives the sliding column 14 to return to its original position, causing the drive seat 5 to move away from the limit plate 3. The pressure block 7 separates from the corresponding groove 23. At this time, the frame 1 18 and frame 2 19 are in a relaxed state, which is convenient for disassembly.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable tray, characterized in that: Includes a support plate (1) and two frames (18 and 19) connected to the top of the support plate (1). The top of the support plate (1) is fixed with a limiting plate (3) for limiting the position of the frames (18 and 19). The limiting plate (3) is slidably connected to a liftable cover plate (2). The cover plate (2) is connected to a pressing mechanism for pressing the top of the frames (18 and 19), and the cover plate (2) is connected to a driving mechanism for driving the cover plate (2) to rise and fall. The support plate (1) is connected to a mechanism for pressing the top of the frames (18 and 19). The side pressure mechanism includes a spring (12), a drive seat (5), a fixed cylinder (6), a pressure block (7), and a spring (16). The spring (12) is used to drive the drive seat (5) to move away from the limiting plate (3). The fixed cylinder (6) is fixed to one side of the drive seat (5). The pressure block (7) is slidably connected to the fixed cylinder (6). The spring (16) is used to drive the pressure block (7) to move away from the drive seat (5). The cover plate (2) is used to drive the drive seat (5) to move along the length of the support plate (1). When frame one (18) is connected to frame two (19), the clamping mechanism clamps the top of frame one (18) and frame two (19), and the clamping block (7) clamps the sides of frame one (18) and frame two (19); The pressing mechanism includes two pressure heads (25), two pressing surfaces (26), two inner cavities (31), and two springs (30). The inner cavity (31) is located inside the limiting plate (3). The pressure head (25) is slidably connected to the corresponding inner cavity (31). The two pressure heads (25) are distributed opposite to each other. The springs (30) are used to drive the pressure head (25) to move towards the support plate (1). The pressing surface (26) is located at the bottom of the pressure head (25).

2. A cable tray according to claim 1, characterized in that, The spring three (30) is located inside the inner cavity (31), and the two ends of the spring three (30) are connected to the cover plate (2) and the pressure head (25).

3. A cable tray according to claim 2, characterized in that, The top of both frame one (18) and frame two (19) is provided with a groove one (21). The two grooves one (21) are matched with two pressure heads (25). The bottom of the groove one (21) is provided with a slope one (22). The slope one (22) is matched with the pressing surface two (26). When frame one (18) and frame two (19) are connected, the pressure head (25) is pressed against the corresponding groove one (21), and the pressing surface two (26) is pressed against the corresponding slope one (22).

4. A cable tray according to claim 3, characterized in that, The side pressure mechanism is provided in four parts, and the side pressure mechanism also includes a spring seat (4), an oblique hole (13), a sliding column (14), a drive plate (11), and a sliding block (17). The spring seat (4) is fixed to the top of the support plate (1). The two ends of the spring (12) are connected to the drive seat (5) and the spring seat (4). The oblique hole (13) is provided in the drive seat (5). The sliding column (14) is slidably connected to the drive seat (5) and fixed to the drive plate (11). The end of the drive plate (11) is connected to the cover plate (2). One end of the pressure block (7) is connected to the sliding block (17). The sliding block (17) is slidably connected in the fixed cylinder (6).

5. A cable tray according to claim 4, characterized in that, The second spring (16) is located inside the fixed cylinder (6), and both ends of the second spring (16) are connected to the sliding block (17) and the fixed cylinder (6).

6. A cable tray according to claim 5, characterized in that, The other end of the pressure block (7) is provided with a pressing surface (15). The two sides of the frame one (18) and the frame two (19) are provided with groove two (23). The groove two (23) is provided with a slope two (24). The slope two (24) matches the corresponding pressing surface one (15). The groove two (23) matches the end of the corresponding pressure block (7). When the frame one (18) and the frame two (19) are connected, the end of the pressure block (7) is pressed against the corresponding groove two (23), and the pressing surface one (15) is pressed against the corresponding slope two (24).

7. A cable tray according to claim 6, characterized in that, The ends of frame one (18) and frame two (19) are connected to sealing gaskets (20).

8. A cable tray according to claim 7, characterized in that, The driving mechanism includes two driving columns (27), two push-pull plates (29), a threaded seat (28), a stud (9), and a handle (10). The handle (10) is used to drive the stud (9) to rotate. The end of the stud (9) is rotatably connected to the bottom of the support plate (1). The threaded seat (28) is threaded to the stud (9). The two ends of the push-pull plate (29) are fixedly connected to the driving columns (27) and the threaded seat (28). The driving column (27) passes through the limiting plate (3) and the support plate (1), and the top of the driving column (27) is connected to the cover plate (2).

9. The installation method of the cable tray according to claim 8, characterized in that, The operation includes the following steps: Step 1: Insert frame 1 (18) and frame 2 (19) between the two limiting plates (3) so that the ends of frame 1 (18) and frame 2 (19) fit together and the two opposite sealing gaskets (20) are connected. Step 2: Rotate the handle (10) to drive the stud (9) to rotate, causing the threaded seat (28) to move down, applying downward pulling force to the two push-pull plates (29), thereby driving the two drive columns (27) to move down, that is, the cover plate (2) and the drive plate (11) move down synchronously, the two pressure heads (25) move towards the corresponding two grooves (21), the drive plate (11) drives the sliding column (14) to move along the length direction of the inclined hole (13), driving the drive seat (5) to move towards the direction close to the limiting plate (3), the spring (12) is gradually stretched, and the pressure block (7) moves towards the direction close to the corresponding groove (23); Step 3: When the threaded seat (28) descends to the appropriate position, the pressure head (25) presses against the corresponding groove one (21), the cover plate (2) presses against the top of the limiting plate (3) and is connected to the frame one (18) and the frame two (19), the end of the pressure block (7) presses against the corresponding groove two (23), the spring two (16) is compressed, improving the stability of the connection between the frame one (18) and the frame two (19), and the two sealing gaskets (20) press against each other, which also realizes the installation and fixation of the frame one (18) and the frame two (19); Step 4: Rotate the handle (10) to drive the stud (9) to rotate, causing the threaded seat (28) to rise. The drive column (27) drives the cover plate (2) and drive plate (11) to rise synchronously. The pressure head (25) separates from the corresponding groove one (21). The drive plate (11) drives the sliding column (14) to return to its original position, causing the drive seat (5) to move away from the limit plate (3). The pressure block (7) separates from the corresponding groove two (23). At this time, frame one (18) and frame two (19) are in a relaxed state, which is convenient for disassembly.

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