Curtain wall hard layer protection device integrated with circular track

Abstract

The invention relates to the technical field of building construction, in particular to a curtain wall hard layer protection device integrated with a circular track, which comprises a frame body, a winding roller and two guide seats, two steel wire ropes are detachably connected to the outer part of the frame body, the other ends of the steel wire ropes are fixedly connected to the winding roller, the steel wire ropes sleeve the outer parts of the guide seats, and the guide seats are fixedly connected to the winding roller. A mounting block is fixedly connected to the outer part of the guide seat, and a mounting groove I is formed in the bottom end of the guide seat; the steel wire rope cleaning device has the beneficial effects that the containing ring is slidably connected into the guide base, the cleaning brushes are installed on the two sides of the containing ring, the steel wire rope at the moving end can be cleaned, the cleanliness of the steel wire rope is kept, the containing groove is formed in the containing ring, and the cleaned steel wire rope is smeared with grease; and the cleaning brush can uniformly smear grease outside the steel wire rope, so that the steel wire rope is kept in a good lubricating state, and friction and abrasion are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a curtain wall hard layer protection device integrated with a ring track. Background Art

[0002] With the continuous development of the construction industry, the number of high-rise buildings has increased rapidly, and higher requirements have been placed on the safety and aesthetics of the building exterior walls. Therefore, curtain walls are installed on the exterior of high-rise buildings. In order to improve the protective performance and construction efficiency of the curtain wall system, a variety of new curtain wall structure designs have emerged in recent years. Among them, the curtain wall hard layer protection device with integrated ring track has attracted widespread attention due to its unique design and superior performance. This device combines the track system with the curtain wall structure, which not only enhances the overall stability and wind pressure resistance of the curtain wall, but also simplifies the installation process and reduces maintenance costs.

[0003] However, the existing curtain wall hard layer protection device integrated with the ring rail is generally composed of a supporting beam, a walkway plate, a guide rail, an electric hoist and an operating basket. When in use, first, a basket docking platform for the operating basket to dock is set up on the docking surface, and then the operating basket is assembled on the ground, including the basket platform, the hoist, the electrical box, the wire rope and the walking mechanism. Then, the installation position of the ring rail is determined, and the ring rail is installed, including the floor-attached double-rail installation or the wall-attached double-rail installation. The lifting device and the operating basket of the curtain wall are respectively installed on the ring rail, and then the protective layer is installed above the supporting beam and other structures to ensure the installation safety of the curtain wall. Finally, the curtain wall unit is installed, and in order to increase its flexibility of use and reduce the number of disassembly and assembly, a climbing device is installed on the outside thereof, which is generally composed of a guide seat and a wire rope combination. When in use, the wire rope is installed on the outside of the frame, and then the wire rope is retracted and released by the electric hoist, so that it can drive the overall frame to move up and down, avoiding repeated assembly and disassembly at high altitude, thereby improving the flexibility of use.

[0004] However, in actual use, the wire rope is in a humid or corrosive environment for a long time, the wire rope is easily corroded, and collides with hard objects during use, which causes burrs or wear on the surface of the wire rope, reducing its load-bearing capacity, usage strength and service life, and increasing the risk of breakage. Summary of the invention

[0005] The object of the present invention is to provide a curtain wall hard layer protection device integrated with a ring track to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a curtain wall hard layer protection device integrated with a ring rail, comprising a frame, a winding roller and two guide seats, the outside of the frame is detachably connected to two steel wire ropes, the other end of the steel wire rope is fixedly connected to the winding roller, the steel wire rope is sleeved on the outside of the guide seat, the outside of the guide seat is fixedly connected to a mounting block, the bottom end of the guide seat is provided with a mounting groove 1, the inside of the mounting groove 1 is slidably connected to two placement rings, the inner side of the placement ring slides with the outside of the steel wire rope, the inside of the placement ring is provided with a placement groove, the left and right sides of the placement ring are detachably connected with cleaning brushes, the inner side of the cleaning brush fits with the outside of the steel wire rope, the inside of the placement ring is provided with a limiting groove, the inside of the limiting groove is slidably connected to a connecting rod, the outside of the connecting rod is fixedly connected to two limiting blocks, the outside of the connecting rod is provided with a guide groove, the top ends of the two connecting rods are slidably connected to a connecting pipe on the side away from each other, and the top end of the connecting pipe is connected to a storage tank.

[0007] Preferably, an elastic member 2 is sleeved on the outer side of the connecting rod, and extrusion sheets are fixedly connected to the separated sides of the two connecting rods, and two slide grooves 2 are provided inside the guide seat.

[0008] Preferably, a slide groove 1 is provided on both the front and rear sides of the placement ring, two sliding blocks are fixedly connected to the separated sides of the cleaning brushes on the left and right sides, a plurality of mounting grooves 2 are provided inside the cleaning brush, an elastic member 1 is fixedly connected to the inner wall of the mounting groove 2, a mounting plate is fixedly connected to the inner side of the elastic member 1, and a clamping block is fixedly connected to the other end of the mounting plate.

[0009] Preferably, a connecting piece is fixedly connected to the outside of the connecting rod, and a push block is fixedly connected to the adjacent sides of two connecting pieces, and a card slot is provided inside the push block.

[0010] Preferably, the limiting block is slidably connected inside the limiting groove, the limiting block is communicated with the placement groove, and the guiding groove is communicated with the limiting block.

[0011] Preferably, one side of the connecting rod is an arc block structure, the storage groove is opened inside the guide seat, and the connecting pipe is fixedly connected to the inside of the guide seat.

[0012] Preferably, the extrusion sheet is slidably connected to the inside of the second slide groove, and the other side of the connecting rod is slidably connected to the inside of the second slide groove.

[0013] Preferably, one end of the second elastic member is fixedly connected to the extrusion sheet, and the other end of the second elastic member is fixedly connected to the second slide groove.

[0014] Preferably, the sliding block is slidably connected inside the first sliding groove, and the mounting piece is slidably connected inside the second mounting groove.

[0015] Preferably, one side of the clamping block is slidably connected to the inside of the second installation groove, and the other side of the clamping block is an arc block structure and penetrates the sliding block to be clamped in the inside of the clamping groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention proposes a curtain wall hard layer protection device integrated with a ring rail, which is connected by sliding a placement ring inside a guide seat and installing cleaning brushes on both sides of the placement ring, so that the moving end wire rope can be cleaned to maintain its cleanliness, and a placement groove is opened inside the placement ring so that grease can be applied to the cleaned wire rope, and the cleaning brush can evenly apply the grease to the outside of the wire rope, so that the wire rope can be kept in a good lubrication state, so that friction and wear can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereogram of the present invention;

[0019] Figure 2 It is a schematic diagram of the guide seat structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the installation block structure of the present invention;

[0021] Figure 4 For the present invention Figure 3 Structural cross-section at AA in the middle;

[0022] Figure 5 For the present invention Figure 4 A magnified view of the structure at center;

[0023] Figure 6 For the present invention Figure 4 A magnified view of the structure at B in the middle;

[0024] Figure 7 This is a schematic diagram of the structure of the second elastic member after restoration of the present invention;

[0025] Figure 8 For the present invention Figure 7 Structural cross-section at the middle BB;

[0026] Fig. 9 For the present invention Figure 8 A magnified view of the structure at C in the middle;

[0027] Fig.10 This is a schematic diagram of the structure of the elastic member after deformation of the present invention;

[0028] Fig.11 For the present invention Fig.10 Structural cross-section at the middle CC;

[0029] Fig.12 For the present invention Fig.11 Enlarged view of the structure at point D in the middle.

[0030] In the figure: 1. frame; 2. wire rope; 3. winding roller; 4. guide seat; 5. mounting block; 6. mounting groove 1; 7. placement ring; 8. placement groove; 9. cleaning brush; 10. limit groove; 11. limit block; 12. connecting rod; 13. guide groove; 14. connecting pipe; 15. storage groove; 16. connecting plate; 17. push block; 18. clamping groove; 19. slide groove 1; 20. slider; 21. mounting groove 2; 22. elastic member 1; 23. mounting plate; 24. clamping block; 25. elastic member 2; 26. extrusion plate; 27. slide groove 2. DETAILED DESCRIPTION

[0031] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figures 1 to 12The present invention provides a technical solution: a curtain wall hard layer protection device integrated with a ring rail, comprising a frame 1, a winding roller 3 and two guide seats 4, the outside of the frame 1 is detachably connected to two steel wire ropes 2, the frame 1 is composed of a supporting beam, a walkway plate, a guide rail, an electric hoist and an operating hanging basket, etc. When in use, firstly, a hanging basket docking platform for the operating hanging basket to dock is set up on the docking surface, and then the operating hanging basket is assembled on the ground, including the hanging basket platform, the hoist, the electrical box, and the walking mechanism, etc., then the installation position of the ring rail is determined, and the ring rail is installed, including a floor-attached double-rail installation or a wall-attached double-rail installation, and the lifting device and the operating hanging basket of the curtain wall are respectively installed on the ring rail, and then the protective layer is installed above the supporting beam and other structures, so as to ensure the safety of the curtain wall. After installation, the curtain wall unit is installed safely. The other end of the wire rope 2 is fixedly connected to the winding roller 3. The winding roller 3 is used to wind the wire rope 2. The wire rope 2 is used to pull the frame 1 for height adjustment. The wire rope 2 is sleeved on the outside of the guide seat 4. The guide seat 4 is used to guide the wire rope 2 so that the wire rope 2 can slide smoothly. The outside of the guide seat 4 is fixedly connected with a mounting block 5. The bottom end of the guide seat 4 is provided with a mounting groove 6. The inside of the mounting groove 6 is slidably connected with two placement rings 7. The mounting groove 6 limits the placement ring 7 so that the placement ring 7 can slide smoothly. The inner side of the placement ring 7 slides with the outer side of the wire rope 2 so that the grease inside the placement ring 7 can be applied to the wire rope 2. The inside of the placement ring 7 is provided with a mounting groove 6. There is a placement groove 8, which is used to guide grease into the outside of the wire rope 2. Cleaning brushes 9 are detachably connected to the left and right sides of the placement ring 7. The cleaning brush 9 is plugged into the placement ring 7 through an insert block, and the cleaning brush 9 is used to clean the wire rope 2, so that the outside of the wire rope 2 is relatively tidy. The inner side of the cleaning brush 9 fits with the outside of the wire rope 2, so that the cleaning brush 9 can evenly apply the grease applied to the outside of the wire rope 2. A limiting groove 10 is provided inside the placement ring 7, and a connecting rod 12 is slidably connected inside the limiting groove 10. The limiting groove 10 limits the connecting rod 12, so that the connecting rod 12 can slide smoothly. One side of the connecting rod 12 is a circular arc block structure, and fits with the outside of the wire rope 2, so that the wire rope 2 can be pushed The connecting rod 12 slides inside the placement ring 7, and two limit blocks 11 are fixedly connected to the outside of the connecting rod 12. The limit block 11 is slidably connected to the inside of the limit groove 10. The limit groove 10 limits the limit block 11, so that the limit block 11 will not deviate when sliding. The limit block 11 is connected to the placement groove 8, so that the grease inside the limit block 11 can enter the inside of the placement groove 8. A guide groove 13 is provided inside the outside of the connecting rod 12. The guide groove 13 is used to guide the flow direction of the grease. The guide groove 13 is connected to the limit block 11, so that the grease inside the guide groove 13 can enter the inside of the limit block 11. The top ends of the two connecting rods 12 are slidably connected to a connecting pipe 14 on one side, so that the connecting rod 12 can block the connecting pipe 14.The connecting pipe 14 is fixedly connected to the inside of the guide seat 4. The top of the connecting pipe 14 is connected to a storage tank 15. The storage tank 15 is opened inside the guide seat 4 and is used to store grease.

[0033] When the steel wire rope 2 is needed to pull the frame 1, the steel wire rope 2 is placed between the two placement rings 7, so that the placement ring 7 and the cleaning brush 9 can fit with the steel wire rope 2 and slide on the outside of the steel wire rope 2. The cleaning brush 9 first cleans the outside of the steel wire rope 2, thereby making the outside of the steel wire rope 2 tidy, and then the steel wire rope 2 can slide with the arc of the connecting rod 12, so that the connecting rod 12 can move outward, and then the connecting rod 12 can drive the limit block 11 to move outward, so that the limit block 11 can be connected with the placement groove 8, and the connecting rod 12 can slide with the connecting tube 14, so that the through hole on the upper side of the guide groove 13 can be connected with the inside of the connecting tube 14, so that the grease in the storage groove 15 can enter the inside of the guide groove 13 through the connecting tube 14, and then enter the inside of the placement groove 8 through the limit block 11, so that the grease can be applied to the wire rope 2 through the through hole on the placement groove 8. At this time, another cleaning brush 9 can evenly apply the grease on the sliding wire rope 2, so that the wire rope 2 can maintain a good lubrication state, so that the friction and wear can be reduced, and the service life of the wire rope 2 is increased.

[0034] Embodiment 2: On the basis of embodiment 1, in order to realize automatic resetting of the connecting rod 12, an elastic member 25 is sleeved on the outer side of the connecting rod 12, and the separated sides of the two connecting rods 12 are fixedly connected with extrusion sheets 26. Two slide grooves 27 are provided inside the guide seat 4, and the extrusion sheets 26 are slidably connected inside the slide grooves 27. The slide grooves 27 limit the extrusion sheets 26 so that the extrusion sheets 26 will not deviate when sliding. The other side of the connecting rod 12 is slidably connected inside the slide grooves 27. The slide grooves 27 limit the connecting rod 12 so that the connecting rod 12 can slide smoothly. One end of the elastic member 25 is fixedly connected to the extrusion sheet 26, and the other end of the elastic member 25 is fixedly connected to the slide grooves 27.

[0035] When the connecting rod 12 moves outward, the connecting rod 12 is able to push the extrusion sheet 26 to move outward, thereby allowing the extrusion sheet 26 to pull the elastic member 25 to deform. As a result, when the steel wire rope 2 is detached from the inside of the placement ring 7, the placement ring 7 is no longer in contact with the arc of the connecting rod 12, thereby allowing the elastic member 25 to perform a reset movement, allowing the elastic member 25 to pull the extrusion sheet 26 to move inward, thereby allowing the extrusion sheet 26 to push the connecting rod 12 to move inward.

[0036] Embodiment 3: On the basis of embodiment 2, in order to achieve a more stable installation of the cleaning brush 9, a slide groove 19 is provided on both the front and rear sides of the placement ring 7, and two sliders 20 are fixedly connected to the separated sides of the left and right cleaning brushes 9, and the slider 20 is slidably connected inside the slide groove 19, and the slide groove 19 limits the slider 20, so that the slider 20 can slide smoothly, and a plurality of mounting grooves 21 are provided inside the cleaning brush 9, and an elastic member 22 is fixedly connected to the inner wall of the mounting groove 21, and a mounting piece 23 is fixedly connected to the inner side of the elastic member 22, and the mounting piece 23 is slidably connected inside the mounting groove 21, and the mounting groove 21 limits the mounting piece 23, so that the mounting piece 23 will not deviate when sliding, and a clamping block 24 is fixedly connected to the other end of the mounting piece 23.

[0037] When the cleaning brush 9 needs to slide into the interior of the placement ring 7, the slider 20 can slide into the interior of the slide groove 19, and then the elastic member 22 can perform a reset movement, so that the elastic member 22 can push the mounting plate 23 to slide inward, and then the mounting plate 23 can be engaged with the slider 20, so that the cleaning brush 9 can be stably installed.

[0038] Embodiment 4: On the basis of embodiment 3, in order to realize convenient replacement of the cleaning brush 9, a connecting piece 16 is fixedly connected to the outside of the connecting rod 12, and the connecting rod 12 is used to pull the connecting piece 16 to move. The adjacent sides of the two connecting pieces 16 are fixedly connected to push blocks 17, and a card slot 18 is provided inside the push block 17. One side of the card block 24 is slidably connected to the inside of the second installation groove 21. The second installation groove 21 limits the card block 24, so that the card block 24 will not deviate when sliding. The other side of the card block 24 is a circular arc block structure, and the slider 20 is inserted through the card slot 18 to limit the slider 20.

[0039] When the connecting rod 12 moves outward, the connecting rod 12 can drive the connecting piece 16 to move outward, and then the connecting piece 16 can drive the push block 17 to move outward, so that the arc of the block 24 can slide with the slot 18, and then the block 24 can be disengaged from the slot 18 and the inside of the slider 20, so that the slider 20 is no longer restricted, so that the cleaning brush 9 can be easily disassembled. On the contrary, when the cleaning brush 9 is inserted into the inside of the placement ring 7 and the slider 20 slides into the inside of the slide groove 19, at this time, the connecting piece 16 moves inward, so that it can drive the push block 17 to slide inward in the inside of the slide groove 19, and then the block 24 can penetrate the slider 20 and engage with the inside of the slot 18, so as to limit the slider 20.

[0040] Embodiment 5: Based on Embodiment 4, a method for using a curtain wall hard layer protection device integrated with a ring track is proposed, comprising the following steps:

[0041] Step 1: by moving the two placement rings 7 to the side away from each other, the placement ring 7 can slide outside the connecting rod 12, and the inner side of the inner wall of the limiting groove 10 is fitted with the outer side of the limiting block 11, so that the placement ring 7 can push the connecting rod 12 to move outward through the limiting groove 10 and the limiting block 11, so that the connecting rod 12 can pull the elastic member 2 25 through the extrusion sheet 26 to produce deformation;

[0042] Step 2: At this time, the connecting rod 12 is able to pull the connecting piece 16 to move outward, so that the connecting piece 16 can drive the push block 17 to move outward, and then the card slot 18 can push the arc of the card block 24 to slide outward, so that the card block 24 can be squeezed by the mounting piece 23 to deform the elastic member 1 22, and then the cleaning brush 9 can slide into the inside of the placement ring 7, and the slider 20 can slide into the inside of the slide slot 19;

[0043] Step 3: Then put the steel wire rope 2 between the two placement rings 7, and then loosen the placement ring 7, so that the elastic member 2 25 can perform a reset movement, and then the elastic member 2 25 can pull the extrusion sheet 26 to move inward, so that the extrusion sheet 26 can push the connecting rod 12 to move inward, and then the connecting rod 12 can push the placement ring 7 to move inward through the limit block 11 and the limit groove 10, so that the placement ring 7 can fit with the steel wire rope 2, and at this time the elastic member 1 22 can perform a reset movement, and then the elastic member 1 22 can push the clamping block 24 to move inward through the installation sheet 23, and then the clamping block 24 can penetrate the slider 20 and engage with the inside of the clamping groove 18, so that the cleaning brush 9 can be conveniently and stably installed;

[0044] Step 4: After the two placement rings 7 are fitted together, the arc of the connecting rod 12 is in contact with the steel wire rope 2, so that the connecting rod 12 will not be reset to the initial position. At this time, the outer side of the limit block 11 is fitted with the outer side of the inner wall of the limit groove 10, so that the limit block 11 is connected with the placement groove 8, and the guide groove 13 is connected with the inside of the connecting pipe 14, so that the grease in the storage groove 15 can enter the inside of the guide groove 13 through the connecting pipe 14, and enter the inside of the placement groove 8 through the limit block 11, so that it can be smeared on the outside of the steel wire rope 2 through the through hole of the placement groove 8;

[0045] Step five: at this time, when the winding roller 3 is winding the wire rope 2, the cleaning brush 9 on the right side can clean the wire rope 2, and the cleaning brush 9 on the left side can evenly apply grease to the wire rope 2. Conversely, when the winding roller 3 is unwinding, the cleaning brush 9 on the left side can clean the wire rope 2, and the cleaning brush 9 on the right side can evenly apply grease to the wire rope 2, so that the winding and unwinding of the wire rope 2 can be cleaned and evenly greased, so that the wire rope 2 can be kept in a good lubrication state, the friction and wear can be reduced, and the service life of the wire rope 2 is increased.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A curtain wall hard layer protection device integrated with a ring track, comprising a frame (1), a winding roller (3) and two guide seats (4), the frame (1) is detachably connected to the outside with two steel wire ropes (2), the other end of the steel wire rope (2) is fixedly connected to the winding roller (3), the steel wire rope (2) is sleeved on the outside of the guide seat (4), and the outside of the guide seat (4) is fixedly connected with a mounting block (5), characterized in that: The bottom end of the guide seat (4) is provided with an installation groove (6), and two placement rings (7) are slidably connected inside the installation groove (6). The inner side of the placement ring (7) slides with the outside of the wire rope (2). A placement groove (8) is provided inside the placement ring (7). Cleaning brushes (9) are detachably connected to the left and right sides of the placement ring (7). The inner side of the cleaning brush (9) fits with the outside of the wire rope (2). A limiting groove (10) is provided inside the placement ring (7). A connecting rod (12) is slidably connected inside the limiting groove (10). Two limiting blocks (11) are fixedly connected to the outside of the connecting rod (12). A guide groove (13) is provided inside the outside of the connecting rod (12). The top ends of the two connecting rods (12) are slidably connected to a connecting pipe (14) on the side away from each other. The top end of the connecting pipe (14) is connected to a storage groove (15).

2. The curtain wall hard layer protection device integrated with the ring track according to claim 1, characterized in that: The outer side of the connecting rod (12) is sleeved with an elastic member 2 (25), and the separated sides of the two connecting rods (12) are fixedly connected with an extrusion sheet (26), and the interior of the guide seat (4) is provided with two slide grooves 2 (27).

3. The curtain wall hard layer protection device integrated with the ring track according to claim 2, characterized in that: The front and rear sides of the placement ring (7) are both provided with a slide groove (19), and the separated sides of the cleaning brushes (9) on the left and right sides are both fixedly connected with two sliding blocks (20), and the interior of the cleaning brush (9) is provided with a plurality of mounting grooves (21), and the inner wall of the mounting grooves (21) is fixedly connected with an elastic member (22), and the inner side of the elastic member (22) is fixedly connected with a mounting plate (23), and the other end of the mounting plate (23) is fixedly connected with a clamping block (24).

4. The curtain wall hard layer protection device integrated with the ring track according to claim 3, characterized in that: The outside of the connecting rod (12) is fixedly connected with a connecting piece (16), and adjacent sides of the two connecting pieces (16) are fixedly connected with a push block (17), and a clamping groove (18) is provided inside the push block (17).

5. The curtain wall hard layer protection device integrated with the ring track according to claim 1, characterized in that: The limit block (11) is slidably connected inside the limit groove (10), the limit block (11) is connected to the placement groove (8), and the guide groove (13) is connected to the limit block (11).

6. The curtain wall hard layer protection device integrated with the ring track according to claim 1, characterized in that: One side of the connecting rod (12) is an arc block structure, the storage groove (15) is opened inside the guide seat (4), and the connecting pipe (14) is fixedly connected to the inside of the guide seat (4).

7. The curtain wall hard layer protection device integrated with the ring track according to claim 2, characterized in that: The extrusion sheet (26) is slidably connected inside the second slide groove (27), and the other side of the connecting rod (12) is slidably connected inside the second slide groove (27).

8. The curtain wall hard layer protection device integrated with the ring track according to claim 2, characterized in that: One end of the second elastic member (25) is fixedly connected to the extrusion sheet (26), and the other end of the second elastic member (25) is fixedly connected to the second slide groove (27).

9. The curtain wall hard layer protection device integrated with the ring track according to claim 3, characterized in that: The sliding block (20) is slidably connected inside the first sliding groove (19), and the mounting piece (23) is slidably connected inside the second mounting groove (21).

10. The curtain wall hard layer protection device integrated with the ring track according to claim 4, characterized in that: One side of the clamping block (24) is slidably connected to the inside of the second installation groove (21), and the other side of the clamping block (24) is an arc block structure and penetrates the sliding block (20) to be clamped to the inside of the clamping groove (18).

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