A basement outer wall outer scaffold tie device

Abstract

The utility model relates to outside frame pull together construction tool technical field discloses a basement outer wall outer scaffold pull together device, including wall, the front side of wall is provided with two reinforcing mechanisms, the front side of wall is provided with scaffold outer frame, the back of scaffold outer frame is provided with two pull together mechanisms, the outer wall front side fixedly connected with two steel pipes of wall, the top of two steel pipes all is provided with the carding mechanism, the pull together mechanism includes upper cross board, the inner wall sliding connection of upper cross board is in the outer wall of scaffold outer frame, the outer wall fixedly connected with the connecting plate of upper cross board, the outer wall sliding connection has lower cross board of connecting plate, in the utility model, through upper cross board and scaffold outer frame sliding connection realizes nimble adaptation, and through the multistage screw fastening of upper cross board, lower cross board and the sleeve ring forms stable rigid connection, and the sleeve ring and steel pipe sliding fit and longitudinal board two -way limit position realize quick positioning.

Description

Technical Field

[0001] This utility model relates to the technical field of scaffolding tie-up construction tools, and in particular to a scaffolding tie-up device for basement exterior walls. Background Technology

[0002] Scaffolding is a temporary working platform erected on the exterior of a building during construction. It provides a safe high-altitude working space for construction workers, facilitating their work in exterior wall masonry, plastering, painting, and facade decoration. It can also serve as a temporary storage place for building materials and plays a crucial supporting and protective role in the construction of basement exterior walls.

[0003] Traditional basement exterior scaffolding tie devices consist of tie rods, embedded parts, and connecting steel plates. During construction, the embedded parts are first fixed in the basement exterior wall structure. Then, one end of the tie rod is firmly welded to the connecting steel plate on the embedded part, and the other end is welded to the upright or horizontal bar of the scaffolding. This achieves a rigid connection between the scaffolding and the wall. However, the welding is a permanent connection, which is difficult to disassemble after the project is completed. The device can only be discarded as a whole and cannot be reused, resulting in a waste of resources.

[0004] Existing technologies employ a snap-fit ​​connection structure for improvement. Snap-fit ​​ties utilize matching snaps and slots on embedded parts in the wall and scaffold members, achieving rapid connection and fixation through the elastic deformation of the snaps. While this structure improves installation efficiency to some extent, fatigue deformation occurs due to the long-term load on the scaffold, leading to decreased precision in the fit between the snaps and slots and affecting scaffold stability. Furthermore, snap-fit ​​structures have numerous components, leading to loss or damage during frequent disassembly. Damaged snap-fit ​​devices are difficult to repair, requiring complete replacement, further increasing construction costs and hindering large-scale application. Therefore, this paper proposes a basement exterior wall scaffolding ties to address these issues. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a basement exterior wall scaffolding tie device, which aims to improve the problem that the existing snap-on device is difficult to repair after damage and can only be replaced as a whole, further increasing the construction cost.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a basement exterior wall scaffolding tying device, comprising a wall, two reinforcing mechanisms provided on the front side of the wall, a scaffolding outer frame provided on the front side of the wall, two tying mechanisms provided on the rear side of the scaffolding outer frame, and two steel pipes fixedly connected to the front side of the outer wall of the wall, with a rope clamping mechanism provided at the top of each of the two steel pipes;

[0007] The tying mechanism includes an upper horizontal plate, the inner wall of which is slidably connected to the outer wall of the scaffold frame. A connecting plate is fixedly connected to the outer wall of the upper horizontal plate, and a lower horizontal plate is slidably connected to the outer wall of the connecting plate. A collar is slidably connected to the outer wall of the steel pipe. Longitudinal plates are fixedly connected to the upper and lower sides of the outer wall of the collar. Two screws are threaded to the inner wall of the lower horizontal plate, and an anti-detachment component is provided on the front side of the collar.

[0008] As a further description of the above technical solution:

[0009] The rope clamping mechanism includes a clamping seat, the bottom of which is fixedly connected to the top of the outer wall of the steel pipe. A screw is rotatably connected to the inner wall of the clamping seat, and a slider is threadedly connected to the outer wall of the screw. A hook is fixedly connected to the front side of the outer wall of the slider. A hook groove is provided on the inner wall of the clamping seat, and a limit component is provided inside the clamping seat.

[0010] As a further description of the above technical solution:

[0011] The reinforcement mechanism includes a mounting plate, the rear side of the outer wall of the mounting plate is fixedly connected to the front side of the outer wall of the wall, and a reinforcement cylinder is fixedly connected to the front side of the outer wall of the mounting plate.

[0012] As a further description of the above technical solution:

[0013] The anti-detachment component includes an insert block, the outer wall of which is slidably connected to the inner wall of a steel pipe, and the outer wall of the steel pipe is provided with a slot.

[0014] As a further description of the above technical solution:

[0015] The limiting component includes two limiting blocks, the outer walls of the two limiting blocks are respectively fixedly connected to the left and right sides of the outer wall of the slider, the inner wall of the card seat is provided with limiting grooves on both the left and right sides, the outer wall of the screw is fixedly connected with a rotating block, and the inner wall of the card seat is provided with a rotating groove.

[0016] As a further description of the above technical solution:

[0017] The inner wall of the scaffold outer frame is fixedly connected with multiple support plates, and the outer wall of the steel pipe is fixedly connected to the inner wall of the reinforcing cylinder.

[0018] As a further description of the above technical solution:

[0019] The bottom of the top vertical plate is slidably connected to the top of the upper horizontal plate, and the top of the bottom vertical plate is slidably connected to the bottom of the lower horizontal plate.

[0020] As a further description of the above technical solution:

[0021] The outer walls of the two limiting blocks are slidably connected to the inner walls of the two limiting grooves, and the outer wall of the rotating block is rotatably connected to the inner wall of the rotating groove.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, flexible adaptation is achieved by sliding the upper horizontal plate to the outer frame of the scaffold. A stable rigid connection is formed by multi-stage screw fastening of the upper horizontal plate, lower horizontal plate and collar. Rapid positioning is achieved by sliding cooperation between the collar and the steel pipe and bidirectional limiting of the longitudinal plate. At the same time, the modular design of sliding connection and threaded fastening facilitates disassembly and reuse, thereby improving the versatility, load-bearing capacity, installation efficiency and anti-slip safety of the device, while reducing construction costs.

[0024] 2. In this utility model, the transmission structure of screw, slider and hook allows the hook to be flexibly adjusted in height, which not only meets the different installation requirements of temporary fall protection nets during the construction phase, but also adapts to the height requirements of permanent protection after the project is completed. Through the cooperation of hook groove and hook, the fall protection net is stably suspended and easy to disassemble, taking into account both temporary construction protection and permanent safety guarantee, realizing the combination of temporary and permanent protection, and reducing the cost of repeated construction. Attached Figure Description

[0025] Figure 1 This is a perspective view of a basement exterior wall scaffolding tying device proposed in this utility model;

[0026] Figure 2 This is a front view of a basement exterior wall scaffolding tying device proposed in this utility model;

[0027] Figure 3 This is a split view of the tying mechanism of a basement exterior wall scaffolding tying device proposed in this utility model;

[0028] Figure 4 This is a cross-sectional view of the mounting bracket of a basement exterior wall scaffolding tie device proposed in this utility model;

[0029] Figure 5 This is a partial structural breakdown diagram of a basement exterior wall scaffolding tie-up device proposed in this utility model.

[0030] Legend:

[0031] 1. Wall; 2. Reinforcement mechanism; 201. Mounting plate; 202. Reinforcement cylinder; 3. Scaffold outer frame; 4. Tie mechanism; 401. Upper horizontal plate; 402. Connecting plate; 403. Lower horizontal plate; 404. Collar; 405. Longitudinal plate; 406. Screw; 407. Anti-detachment component; 4071. Insert block; 4072. Slot; 5. Steel pipe; 6. Rope clamping mechanism; 601. Clamping seat; 602. Screw; 603. Sliding block; 604. Hook; 605. Hook groove; 606. Limiting component; 6061. Limiting block; 6062. Limiting groove; 6063. Rotating block; 6064. Rotating groove; 7. Support plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] See attached document Figure 1 Appendix Figure 2 and attached Figure 3 An embodiment of this utility model provides: a basement exterior wall scaffolding tie device, including a wall 1, two reinforcing mechanisms 2 are provided on the front side of the wall 1, the reinforcing mechanisms 2 are used to strengthen the stability of steel pipes 5, a scaffolding outer frame 3 is provided on the front side of the wall 1, two tie mechanisms 4 are provided on the rear side of the scaffolding outer frame 3, the tie mechanisms 4 are used to connect the scaffolding outer frame 3 to the steel pipes 5, two steel pipes 5 are fixedly connected to the front side of the outer wall of the wall 1, and a rope clamping mechanism 6 is provided on the top of each of the two steel pipes 5, the rope clamping mechanism 6 is used to hang anti-fall nets after construction;

[0034] The tying mechanism 4 includes an upper horizontal plate 401, the inner wall of which is slidably connected to the outer wall of the scaffold outer frame 3. This allows for position adjustment of the upper horizontal plate 401 on the scaffold outer frame 3 to fit the steel pipe 5. A connecting plate 402 is fixedly connected to the outer wall of the upper horizontal plate 401, providing an installation base for the lower horizontal plate 403 and connecting it to the upper horizontal plate 401. The outer wall of the connecting plate 402 is slidably connected to the lower horizontal plate 403, allowing the lower horizontal plate 403 to move up and down along the connecting plate 402 to accommodate the bottom position of the steel pipe 5. The outer wall of the steel pipe 5 is slidably connected to a collar 404, facilitating the axial installation of the collar 404 along the steel pipe 5. Longitudinal plates 405 are fixedly connected to the upper and lower sides of the outer wall of the collar 404, connecting the upper horizontal plate 401 and the lower horizontal plate 403 and reinforcing the connection between the collar 404 and the upper and lower horizontal plates. For strength, the bottom of the top longitudinal plate 405 is slidably connected to the top of the upper horizontal plate 401, and the top of the bottom longitudinal plate 405 is slidably connected to the bottom of the lower horizontal plate 403, so as to realize the positional adaptation of the longitudinal plate 405 with the upper and lower horizontal plates, providing conditions for subsequent fixation. The inner wall of the lower horizontal plate 403 is threaded with two screws 406. By tightening the screws 406, the lower horizontal plate 403 is fixed on the connecting plate 402, forming a preliminary clamping of the steel pipe 5. The front side of the collar 404 is provided with an anti-detachment component 407. The anti-detachment component 407 includes a plug 4071. The outer wall of the plug 4071 is slidably connected to the inner wall of the steel pipe 5. The outer wall of the steel pipe 5 is provided with a slot 4072. By inserting the plug 4071 into the slot 4072, the axial displacement of the collar 404 is restricted, further enhancing the connection reliability.

[0035] Specifically, during installation, first, the top left and right vertical bars of the scaffold outer frame 3 are aligned and positioned against the outer wall of the steel pipe 5. Then, the inner wall of the upper horizontal plate 401 is slidably fitted along the outer wall of the scaffold outer frame 3, so that its bottom abuts against the top of the steel pipe 5 to complete the initial positioning. Next, the connecting plate 402 fixed to the outer wall of the upper horizontal plate 401 is slidably connected to the lower horizontal plate 403. The lower horizontal plate 403 is moved so that its top is aligned with the bottom of the steel pipe 5. Two screws 406 are screwed into the screw holes of the connecting plate 402 to form an upper and lower clamping frame for the steel pipe 5. Then, the collar 404 is slidably fitted along the axial direction of the steel pipe 5, and the longitudinal plates 405 on its upper and lower outer walls are respectively... Contacting the top of the upper horizontal plate 401 and the bottom of the lower horizontal plate 403, screws 406 are passed through the longitudinal plate 405, the upper horizontal plate 401 and the lower horizontal plate 403 in sequence and tightened to strengthen the connection between the three and the collar 404, thereby achieving the connection and fixation between the scaffold outer frame 3 and the steel pipe 5. Finally, the insert block 4071 of the anti-detachment component 407 is slid along the inner wall of the steel pipe 5 and inserted into the slot 4072 opened on the outer wall of the steel pipe 5 to restrict the collar 404 from moving axially along the steel pipe 5, preventing the collar 404 from loosening due to external force during construction, thereby enhancing the overall stability of the tying mechanism 4 and ensuring the safety of using the basement exterior wall scaffolding.

[0036] See attached document Figure 1 Appendix Figure 4and attached Figure 5 The rope clamping mechanism 6 includes a clamping seat 601. The bottom of the clamping seat 601 is fixedly connected to the top of the outer wall of the steel pipe 5, providing an installation base for the rope clamping mechanism 6 and forming a stable connection with the steel pipe 5. A screw 602 is rotatably connected to the inner wall of the clamping seat 601, serving as a driving component to move the slider 603. The slider 603 is threadedly connected to the outer wall of the screw 602, converting the rotational motion of the screw 602 into the linear motion of the slider 603 through threaded transmission. A hook 604 is fixedly connected to the front side of the outer wall of the slider 603 for hanging the fall protection net rope. A hook groove 605 is provided on the inner wall of the clamping seat 601 for limiting and fixing the hook 604 to prevent the fall protection net from accidentally falling off. A limit component 606 is provided inside the clamping seat 601 to limit the movement trajectory of the slider 603 and ensure its stable movement. The limit component 606 includes two limit blocks 6061 for engaging with the limit groove 6061. The two limit blocks 6061 are fixedly connected to the outer walls of the slider 603 on the left and right sides respectively, so that the limit blocks 6061 can move synchronously with the slider 603. The inner walls of the card holder 601 are provided with limit grooves 6062 on the left and right sides for the limit blocks 6061 to slide, guide and limit the slider 603. The outer walls of the two limit blocks 6061 are slidably connected to the inner walls of the two limit grooves 6062 respectively. Through sliding cooperation, the slider 603 can only move along the axial direction of the screw 602. The outer wall of the screw 602 is fixedly connected with a rotating block 6063, which is convenient for the operator to manually rotate the screw 602. The inner wall of the card holder 601 is provided with a rotating groove 6064 to provide rotation space for the rotating block 6063 and limit it. The outer wall of the rotating block 6063 is rotatably connected to the inner wall of the rotating groove 6064, so that the rotating block 6063 can drive the screw 602 to rotate stably.

[0037] Specifically, when the rope clamping mechanism 6 is working, the bottom of the clamping seat 601 is fixed to the top of the outer wall of the steel pipe 5, providing an installation base for the mechanism. The screw 602 is rotatably connected to the clamping seat 601 through its inner wall. The rotating block 6063 fixed on its outer wall is embedded in the rotating groove 6064 on the inner wall of the clamping seat 601, forming a transmission structure. When the rotating block 6063 is rotated, the screw 602 rotates synchronously, driving the slider 603 to move axially along the screw 602 through threaded transmission. The hook 604 fixed on the front side of the slider 603 is then adjusted vertically. The limiting blocks 6061 fixed on both sides slide in conjunction with the limiting grooves 6062 on the inner wall of the card seat 601, restricting the slider 603 to move only along the axial direction of the screw 602. When installing the fall protection net, rotate the rotating block 6063 to adjust the hook 604 to a suitable height. After hanging the fall protection net rope, rotate the screw 602 in the opposite direction to make the hook 604 engage in the hook groove 605. Use the hook groove 605 to limit and fix it. When disassembling the fall protection net, rotate the rotating block 6063 again to make the hook 604 disengage from the hook groove 605. After adjusting it to a position that is easy to operate, remove the fall protection net.

[0038] See attached document Figure 1 and attached Figure 2 The reinforcement mechanism 2 includes a mounting plate 201. The rear side of the outer wall of the mounting plate 201 is fixedly connected to the front side of the outer wall of the wall 1 to achieve a stable connection between the reinforcement mechanism 2 and the wall 1, providing a foundation for the installation of subsequent components. A reinforcement cylinder 202 is fixedly connected to the front side of the outer wall of the mounting plate 201. The outer wall of the steel pipe 5 is fixedly connected to the inner wall of the reinforcement cylinder 202. The stability of the steel pipe 5 is improved by connecting it to the reinforcement cylinder 202. Multiple support plates 7 are fixedly connected to the inner wall of the scaffold outer frame 3 for workers to step on.

[0039] Specifically, the installation plate 201 securely connects the reinforcement mechanism 2 to the wall 1, providing a reliable support foundation for the entire reinforcement system. The reinforcement cylinder 202 is fixedly connected to the steel pipe 5, constraining the displacement of the steel pipe 5 and enhancing its load-bearing capacity. The support plate 7 on the inner wall of the scaffold outer frame 3 provides a support platform for workers, facilitating construction operations and further enhancing the overall integrity of the scaffold structure.

[0040] Working principle: During installation, first move the scaffold outer frame 3 until its top left and right vertical bars are close to the outer wall of the steel pipe 5, laying the benchmark for subsequent installation. The upper horizontal plate 401 is slidably connected to the outer wall of the scaffold outer frame 3 through its inner wall, allowing for flexible position adjustment. After being fitted, its bottom contacts the top of the steel pipe 5, completing the initial positioning. The connecting plate 402 is fixed to the outer wall of the upper horizontal plate 401, and the lower horizontal plate 403 is slidably connected to the connecting plate 402. After moving the lower horizontal plate 403 so that its top is close to the bottom of the steel pipe 5, it is fixed to the connecting plate 402 with two screws 406, initially forming a clamping frame around the steel pipe 5. Next, the collar 404 is slidably fitted along the axial direction of the steel pipe 5, and the longitudinal plates 405 on the upper and lower sides of the outer wall of the collar 404 then contact the upper and lower horizontal plates, i.e., the top longitudinal plate 405. The bottom of the upper horizontal plate 401 is tightly attached to the top, and the bottom of the lower vertical plate 405 is tightly attached to the bottom of the lower horizontal plate 403. The vertical plate 405 is then fixed to the upper and lower horizontal plates respectively by screws 406, which further strengthens the connection between the upper horizontal plate 401, the lower horizontal plate 403 and the collar 404, making the entire tie mechanism 4 a stable whole and realizing the reliable tie between the scaffold outer frame 3 and the steel pipe 5. Finally, the anti-detachment component 407 plays a role. The outer wall of the insert 4071 slides and engages with the inner wall of the steel pipe 5. The outer wall of the steel pipe 5 has a slot 4072. After the insert 4071 is inserted into the slot 4072, the collar 404 is restricted from moving along the axial direction of the steel pipe 5, preventing the collar 404 from slipping due to external forces during construction, further enhancing the structural stability and safety, and ensuring the safe use of the basement exterior wall scaffold.

[0041] Furthermore, the card holder 601, as the basic support component of the rope clamping mechanism 6, is fixedly connected to the top of the outer wall of the steel pipe 5 at its bottom, providing an installation carrier for other parts. The screw 602 is rotatably connected to the card holder 601 through its inner wall, forming the transmission core of the mechanism. When the position of the hook 604 needs to be adjusted, the operator rotates the rotating block 6063. The outer wall of the rotating block 6063 rotates on the inner wall of the rotating groove 6064, driving the screw 602 to rotate synchronously. The rotational motion of the screw 602 is converted into the linear motion of the slider 603 through threaded transmission. Since the outer wall of the slider 603 is threadedly connected to the screw 602, when the screw 602 rotates, the slider 603 will move along the axial direction of the screw 602. At the same time, the hook 604 fixedly connected to the front side of the outer wall of the slider 603 will move synchronously with the slider 603, thereby realizing the vertical position adjustment of the hook 604. The limiting component 606 plays a role in constraining the movement trajectory of the slider 603, ensuring... Its stable movement is achieved by fixing two limiting blocks 6061 to the left and right sides of the outer wall of the slider 603, respectively, and cooperating with the limiting grooves 6062 opened on the left and right sides of the inner wall of the card seat 601. The limiting blocks 6061 slide on the outer wall and on the inner wall of the limiting grooves 6062, restricting the slider 603 to move only along the axial direction of the screw 602, preventing it from deviating or rotating during movement, and ensuring the accuracy and stability of the movement of the hook 604. After construction, the fall protection net needs to be installed. Rotate the rotating block 6063 to adjust the hook 604 to a suitable height, and then hang the rope of the fall protection net on the hook 604. Then rotate the screw 602 in the opposite direction to lock the hook 604 into the hook groove 605. The limiting effect of the hook groove 605 is used to fix the hook 604, thereby achieving the stable suspension of the fall protection net. When disassembling the fall protection net, rotate the rotating block 6063 again to disengage the hook 604 from the hook groove 605 and adjust it to a position that is easy to disassemble, and the fall protection net can be easily removed.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A basement exterior wall scaffolding tying device, comprising a wall (1), characterized in that: Two reinforcement mechanisms (2) are provided on the front side of the wall (1), a scaffold frame (3) is provided on the front side of the wall (1), two tie mechanisms (4) are provided on the rear side of the scaffold frame (3), and two steel pipes (5) are fixedly connected to the front side of the outer wall of the wall (1). A rope clamping mechanism (6) is provided on the top of each of the two steel pipes (5). The tying mechanism (4) includes an upper horizontal plate (401), the inner wall of which is slidably connected to the outer wall of the scaffold outer frame (3), a connecting plate (402) is fixedly connected to the outer wall of the upper horizontal plate (401), a lower horizontal plate (403) is slidably connected to the outer wall of the connecting plate (402), a collar (404) is slidably connected to the outer wall of the steel pipe (5), and longitudinal plates (405) are fixedly connected to the upper and lower sides of the outer wall of the collar (404). Two screws (406) are threadedly connected to the inner wall of the lower horizontal plate (403), and an anti-detachment component (407) is provided on the front side of the collar (404).

2. The basement exterior wall scaffolding tying device according to claim 1, characterized in that: The rope clamping mechanism (6) includes a clamping seat (601), the bottom of which is fixedly connected to the top of the outer wall of the steel pipe (5). A screw (602) is rotatably connected to the inner wall of the clamping seat (601). A slider (603) is threadedly connected to the outer wall of the screw (602). A hook (604) is fixedly connected to the front side of the outer wall of the slider (603). A hook groove (605) is provided on the inner wall of the clamping seat (601). A limit component (606) is provided inside the clamping seat (601).

3. The basement exterior wall scaffolding tying device according to claim 1, characterized in that: The reinforcement mechanism (2) includes a mounting plate (201), the rear side of the outer wall of the mounting plate (201) is fixedly connected to the front side of the outer wall of the wall (1), and a reinforcement cylinder (202) is fixedly connected to the front side of the outer wall of the mounting plate (201).

4. The basement exterior wall scaffolding tying device according to claim 1, characterized in that: The anti-detachment component (407) includes a plug (4071), the outer wall of which is slidably connected to the inner wall of the steel pipe (5), and the outer wall of the steel pipe (5) is provided with a slot (4072).

5. A basement exterior wall scaffolding tying device according to claim 2, characterized in that: The limiting component (606) includes two limiting blocks (6061), the outer walls of the two limiting blocks (6061) are respectively fixedly connected to the left and right sides of the outer wall of the slider (603), the inner wall of the card holder (601) is provided with limiting grooves (6062) on both the left and right sides, the outer wall of the screw (602) is fixedly connected with a rotating block (6063), and the inner wall of the card holder (601) is provided with a rotating groove (6064).

6. A basement exterior wall scaffolding tying device according to claim 3, characterized in that: The inner wall of the scaffold outer frame (3) is fixedly connected with multiple support plates (7), and the outer wall of the steel pipe (5) is fixedly connected to the inner wall of the reinforcing cylinder (202).

7. The basement exterior wall scaffolding tying device according to claim 1, characterized in that: The bottom of the top vertical plate (405) is slidably connected to the top of the upper horizontal plate (401), and the top of the bottom vertical plate (405) is slidably connected to the bottom of the lower horizontal plate (403).

8. A basement exterior wall scaffolding tying device according to claim 5, characterized in that: The outer walls of the two limiting blocks (6061) are slidably connected to the inner walls of the two limiting grooves (6062), and the outer wall of the rotating block (6063) is rotatably connected to the inner wall of the rotating groove (6064).

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