Connector for high and steep slope safety protection net

Abstract

This invention relates to the field of protective netting technology, and in particular to a connector for a safety protective netting for steep slopes. It includes: an installation component comprising a protective netting, a steel cable threaded through the protective netting, a base disposed outside the steel cable, a limiting box disposed on the base, and a receiving opening disposed on the limiting box; a fixing component comprising a guide assembly disposed on the limiting box, a rotating assembly disposed on the guide assembly, a sliding assembly disposed outside the rotating assembly, a tensioning assembly disposed on the sliding assembly, and a locking assembly disposed on the guide assembly; a reinforcement component comprising a transmission assembly disposed on the locking assembly; and a disassembly component comprising a power assembly disposed on the limiting box and a rotating assembly disposed within the base. The device of this invention enables rapid installation and disassembly of the limiting box, reducing the risk to workers during installation.

Description

Technical Field

[0001] This invention relates to the field of protective netting technology, and in particular to a connector for a safety protective netting for steep slopes. Background Technology

[0002] In some mountainous areas with steep slopes, protective nets are usually installed along the slopes to prevent rocks from falling onto the roads and causing safety accidents. During the installation of the protective nets, steel cables are threaded through them to support and reinforce them.

[0003] During use, existing steel cables are arranged in a crisscross pattern. Connectors are typically installed at the intersections to prevent slippage between the two crossing cables, which could cause the protective net to tighten. Existing connectors mainly consist of a base and a cover. In use, the steel cable is placed on the base, and then the cover is placed on top. The cover is usually fixed with threads. However, this method is inconvenient in areas such as slopes, where turning the threads is difficult and time-consuming, increasing the risk to workers during installation. Summary of the Invention

[0004] In view of the problems in the prior art, such as the inconvenience of fixing the cover and the base by rotating the thread in places like slopes, which makes the installation difficult for workers and the long time spent rotating the thread, increasing the risk to workers during installation, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a connector for a safety protection net for steep slopes.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: It includes an installation component comprising a protective net, a steel cable threaded through the protective net, a base disposed on the outside of the steel cable, a limiting box disposed on the base, and a receiving opening disposed on the limiting box; a fixing component comprising a guide assembly disposed on the limiting box, a rotating assembly disposed on the guide assembly, a sliding assembly disposed on the outside of the rotating assembly, a tensioning assembly disposed on the sliding assembly, and a locking assembly disposed on the guide assembly; a reinforcing component comprising a transmission assembly disposed on the locking assembly and a limiting assembly disposed on the transmission assembly; and a disassembly component comprising a power assembly disposed on the limiting box and a rotating assembly disposed within the base.

[0007] As a preferred embodiment of the connector for the safety protection net of high and steep slopes of the present invention, the guide component includes a guide port disposed on the base, and a plug is fixedly connected to the limiting box, the plug being slidably connected to the guide port.

[0008] As a preferred embodiment of the connector for the safety protection net of high and steep slopes of the present invention, the rotating component includes a cavity disposed in the base, the cavity having a circular opening, a cylinder fixedly connected to the limiting box, a positioning rod fixedly connected to the cylinder, an extension groove disposed in the cavity, a rotating shaft rotatably connected in the extension groove, a first torsion spring disposed on the rotating shaft, a sleeve fixedly connected to the rotating shaft, a first guide groove cooperating with the positioning rod disposed on the sleeve, a second guide groove disposed on the first guide groove, and an annular groove communicating with the second guide groove.

[0009] As a preferred embodiment of the connector for the safety protection net of high and steep slopes of the present invention, the sliding component includes a support seat fixedly connected to the inner wall of the cavity, a slider slidably connected to the support seat, a stop groove provided on the slider, a stop block that cooperates with the stop groove fixedly connected to the support seat, a first rigid rope fixedly connected to the slider, and one end of the first rigid rope fixedly connected to the side wall of the sleeve.

[0010] As a preferred embodiment of the connector for the safety protection net of high and steep slopes of the present invention, the tensioning component includes an extension block fixedly connected to the slider, a drive shaft rotatably connected to the extension block, a second torsion spring provided on the drive shaft, an inclined block fixedly connected to the drive shaft, and an arc-shaped block fixedly connected to the support base.

[0011] As a preferred embodiment of the connector for the safety protection net of high and steep slopes of the present invention, the engaging assembly includes a triangular groove provided on the insert block, a strip groove provided on the triangular groove, a bearing rod fixedly connected to the inner wall of the cavity, a spring piece fixedly connected to the bearing rod, the spring piece cooperating with the triangular groove and the strip groove, a second rigid rope fixedly connected to the spring piece, and one end of the second rigid rope fixedly connected to the outer end of the inclined block.

[0012] As a preferred embodiment of the connector for the safety protection net of high and steep slopes of the present invention, the transmission component includes an installation groove disposed in the plug, a lifting plate is slidably connected in the installation groove, the lifting plate is elastically connected to the inner wall of the installation cavity through a telescopic spring, and the lifting plate is provided with a cut edge.

[0013] As a preferred embodiment of the connector for the safety protection net of high and steep slopes of the present invention, the limiting component includes a guide port provided on the side wall of the mounting groove, a support shaft is rotatably connected in the guide port, an L-shaped locking block is fixedly connected on the support shaft, and a locking groove that cooperates with the L-shaped locking block is provided on the guide port.

[0014] As a preferred embodiment of the connector for the safety protection net of high and steep slopes of the present invention, the power component includes a mounting port of the base, a ring rotatably connected in the mounting port, a hexagonal groove on the inner wall of the ring, a hexagonal column fixedly connected in the hexagonal groove, the ring being recessed into the base, and a cap on the base.

[0015] As a preferred embodiment of the connector for the safety protection net of high and steep slopes of the present invention, the rotating component includes a first gear fixedly connected to a hexagonal column, and a second gear meshing with the first gear is fixedly connected to the side wall of the sleeve.

[0016] The beneficial effects of this invention, a connector for safety protection nets on steep slopes, are as follows: By setting a fixing component, when fixing the limiting box and the base, simply insert the cylinder on the limiting box into the circular opening of the base and press it to fix the limiting box. This is convenient to use. Furthermore, the setting of the reinforcing component can enhance the fixing effect and prevent the limiting box from loosening. This solves the problem that in places such as slopes, it is inconvenient to fix the box cover and the base by rotating the thread, which brings installation difficulties to workers and takes a long time to rotate the thread, increasing the risk of workers during installation. This invention achieves the effect of quick installation and disassembly of the connector box cover, reducing the installation risk for workers. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an overall schematic diagram of the connector used for safety protection nets on steep slopes.

[0019] Figure 2 Exploded view of the external structure of the base of the connector for the safety protection net of high and steep slopes.

[0020] Figure 3 This is a cross-sectional view of the limiting box of a connector used for safety protection netting on steep slopes.

[0021] Figure 4 This is a schematic diagram of the internal structure of the cavity of a connector used for safety protection netting on steep slopes.

[0022] Figure 5 Exploded view of the rotating component of the connector used for safety protection netting on steep slopes.

[0023] Figure 6 This is a schematic diagram of the internal structure of the extension groove of a connector used for safety protection nets on steep slopes.

[0024] Figure 7 Exploded view of the engaging assembly of a connector for a safety net used on steep slopes.

[0025] Figure 8 for Figure 7 An enlarged schematic diagram of the structure at point A.

[0026] Figure 9 This is a cross-sectional view of the transmission component of a connector used in safety protection nets for steep slopes.

[0027] Figure 10 for Figure 9 Enlarged schematic diagram of the structure at point B.

[0028] Figure 11 Exploded view of the rotating component of the connector used for safety protection netting on steep slopes.

[0029] In the diagram: 100, Installation component; 101, Protective net; 102, Steel cable; 103, Base; 104, Limiting box; 105, Receiving opening; 200, Fixing component; 201, Guide assembly; 201a, Guide opening; 201b, Insert block; 202, Rotating assembly; 202a, Cavity; 202b, Circular opening; 202c, Cylinder; 202d, Positioning rod; 202e, Extension slot; 2 02f, Rotating shaft; 202g, First torsion spring; 202h, Sleeve; 202i, First guide groove; 202j, Second guide groove; 202k, Annular groove; 203, Sliding assembly; 203a, Support base; 203b, Slider; 203c, Stop groove; 203d, Stop block; 203e, First rigid rope; 204, Tension assembly; 204a, Extension block; 204b, Transmission. Shaft; 204c, Second torsion spring; 204d, Inclined block; 204e, Arc-shaped block; 205, Engaging assembly; 205a, Triangular groove; 205b, Strip groove; 205c, Bearing rod; 205d, Spring piece; 205e, Second rigid rope; 300, Reinforcing component; 301, Transmission assembly; 301a, Mounting groove; 301b, Lifting plate; 301c, Telescopic spring; 301d, Cutting... 302, Limiting component; 302a, Guide port; 302b, Support shaft; 302c, L-shaped locking block; 302d, Locking groove; 400, Disassembly component; 401, Power component; 401a, Mounting port; 401b, Ring; 401c, Hexagonal groove; 401d, Hexagonal column; 401e, Cap; 402, Rotating component; 402a, First gear; 402b, Second gear. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0033] Example 1

[0034] Reference Figures 1-10 This is the first embodiment of the present invention. This embodiment provides a connector for a safety net 101 on a steep slope, which can quickly fix the limiting box 104 and the base 103 and quickly limit the steel cable 102. It includes an installation component 100, including a protective net 101, a steel cable 102 inserted into the protective net 101, a base 103 disposed on the outside of the steel cable 102, a limiting box 104 disposed on the base 103, and a receiving opening 105 disposed on the limiting box 104; and a fixing component 200, including a guide assembly disposed on the limiting box 104. The components include: component 201, a rotating component 202 disposed on the guide component 201, a sliding component 203 disposed outside the rotating component 202, a tensioning component 204 disposed on the sliding component 203, and a locking component 205 disposed on the guide component 201; a reinforcing component 300, including a transmission component 301 disposed on the locking component 205, and a limiting component 302 disposed on the transmission component 301; and a disassembly component 400, including a power component 401 disposed on the limiting box 104, and a rotating component 402 disposed within the base 103.

[0035] Specifically, the steel cable 102 is used in conjunction with the pile body. A drilling machine is used to drill holes, and then anchor rods are driven into the ground. The steel cable 102 is then fixed to the anchor rods to support the steel cable 102, thereby supporting the entire protective net 101. The steel cables 102 are arranged in a cross pattern, and a base 103 and a limiting box 104 are set at the intersection. The setting of the receiving opening 105 allows the steel cable 102 to pass through. The limiting box 104 limits the steel cable 102 to ensure the cross pattern of the steel cables 102 and prevent the steel cable 102 from sliding freely.

[0036] Furthermore, the guide assembly 201 includes a guide opening 201a disposed on the base 103, and an insert block 201b fixedly connected to the limiting box 104, the insert block 201b being slidably connected to the guide opening 201a; the rotating assembly 202 includes a cavity 202a disposed within the base 103, the cavity 202a having a circular opening 202b, a cylinder 202c fixedly connected to the limiting box 104, and a positioning rod 202d fixedly connected to the cylinder 202c. The cavity 202a is provided with an extension groove 202e, and a rotating shaft 202f is rotatably connected in the extension groove 202e. A first torsion spring 202g is provided on the rotating shaft 202f, and a sleeve 202h is fixedly connected to the rotating shaft 202f. A first guide groove 202i is provided on the sleeve 202h to cooperate with the positioning rod 202d. A second guide groove 202j is provided on the first guide groove 202i, and an annular groove 202k is connected to the second guide groove 202j.

[0037] Four guide ports 201a and four insert blocks 201b are provided. The cylinders 202c are set in four directions at the intersection of the two steel cables 102, and the side wall of each cylinder 202c abuts against the steel cable 102, thereby further limiting the steel cable 102 and preventing the steel cable 102 from moving. The positioning rod 202d is set on the cylinder 202c in a direction away from the steel cable 102, so that when the cylinder 202c is pushed, the positioning rod 202d will not collide with the steel cable 102. Here, the first guide groove 202i is an arc groove and the second guide groove 202j is a vertical groove.

[0038] Preferably, the sliding assembly 203 includes a support seat 203a fixedly connected to the inner wall of the cavity 202a, a slider 203b slidably connected to the support seat 203a, a stop groove 203c provided on the slider 203b, a stop block 203d cooperating with the stop groove 203c fixedly connected to the support seat 203a, and a first rigid rope 203e fixedly connected to the slider 203b, one end of the first rigid rope 203e being fixedly connected to the side wall of the sleeve 202h; the tensioning assembly 204 includes an extension block 204a fixedly connected to the slider 203b, a drive shaft 204b rotatably connected to the extension block 204a, and a stop block 203d cooperating with the stop groove 203c fixedly connected to the support seat 203a; a first rigid rope 203e is fixedly connected to the slider 203b, one end of the first rigid rope 203e being fixedly connected to the side wall of the sleeve 202h; the tensioning assembly 204 includes an extension block 204a fixedly connected to the slider 203b, a drive shaft 204b rotatably connected to the extension block 204a, and a stop groove 203d provided on the drive shaft 204b. The device includes a second torsion spring 204c, a wedge block 204d fixedly connected to the drive shaft 204b, and an arc-shaped block 204e fixedly connected to the support base 203a. The engaging assembly 205 includes a triangular groove 205a provided on the insert block 201b, a strip groove 205b provided on the triangular groove 205a, a bearing rod 205c fixedly connected to the inner wall of the cavity 202a, a spring piece 205d fixedly connected to the bearing rod 205c, the spring piece 205d cooperating with the triangular groove 205a and the strip groove 205b, and a second rigid rope 205e fixedly connected to the spring piece 205d, one end of the second rigid rope 205e being fixedly connected to the outer end of the wedge block 204d.

[0039] It should be noted that the support base 203a is provided with a sliding port, and the slider 203b slides in the sliding port. The stop groove 203c cooperates with the stop block 203d to prevent the slider 203b from disengaging from the support base 203a. When the first rigid rope 203e is initially in the position, it is arc-shaped and attached to the side wall of the sleeve 202h, so that the slider 203b is more easily pulled when subjected to force, thus avoiding jamming.

[0040] When using the limiting box 104, first align the four inserts 201b on the limiting box 104 with the guide opening 201a. At this time, the four cylinders 202c limit the steel cable 102 in the middle, and make sure that the cylinders 202c are directly opposite the circular opening 202b. The diameter of the circular opening 202b is larger than the diameter of the cylinders 202c, so that no jamming will occur. After the cylinders 202c are inserted into the circular opening 202b, continue to press the limiting box 104 so that the cylinders 202c enter the sleeve 202h. When the cylinders 202c enter the sleeve 202h, the positioning rod 202d can enter the first guide groove 202. i. Then, continue to squeeze the limiting box 104, so that the positioning rod 202d engages with the first guide groove 202i, thereby causing the sleeve 202h to rotate counterclockwise (viewed from the top view of the limiting box 104, the same below), which can pull the first rigid rope 203e to wind around the sleeve 202h. When the sleeve 202h rotates, the rotating shaft 202f rotates, and the first torsion spring 202g gains elasticity. When the first rigid rope 203e winds around, it can pull the slider 203b to move, so that the extension block 204a moves towards the support seat 203a, which can pull the inclined block 204d towards the support seat 203a. When 203a moves, the inclined block 204d and the arc-shaped block 204e cooperate, allowing the inclined block 204d to move towards the center, thereby driving the second rigid rope 205e to move, causing the spring piece 205d to be squeezed towards the center. As the spring piece 205d is squeezed into the range of the triangular groove 205a, the triangular groove 205a on the insert block 201b moves above the spring piece 205d. When the positioning rod 202d moves to the second guide groove 202j, the spring piece 205d cooperates with the triangular groove 205a. At this time, the insert block 201b is downward, and there is no phenomenon of the spring piece 205d and the triangular groove 205a getting stuck. As the limiting box 104 continues to be pressed down, the circular... As column 202c continues downward, when positioning rod 202d moves into annular groove 202k, strip groove 205b and spring piece 205d are aligned. At this time, under the action of first torsion spring 202g, sliding sleeve resets, causing positioning rod 202d to be misaligned with second guide groove 202j. Positioning rod 202d cannot reset, and cylinder 202c resets, thereby limiting the position of limiting box 104. When sliding sleeve resets, spring piece 205d resets, causing spring piece 205d to move into strip groove 205b, preventing insertion block 201b from resetting, enhancing the limiting effect of limiting box 104, and achieving fixation between limiting box 104 and base 103.

[0041] In summary, when fixing the limiting box 104 to the base 103, simply insert the cylinder 202c on the limiting box 104 into the circular opening 202b to limit the limiting box 104, and also drive the spring piece 205d to engage in the strip groove 205b, thereby improving the limiting effect of the limiting box 104 and facilitating the fixing between the limiting box 104 and the base 103.

[0042] Example 2

[0043] Reference Figures 7-10 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a reinforcing component 300 for the connector of the safety net 101 for steep slopes, which solves the problem of how to further prevent loosening between the limiting box 104 and the base 103. It includes a transmission assembly 301, including a mounting groove 301a disposed in the insert 201b. A lifting plate 301b is slidably connected in the mounting groove 301a. The lifting plate 301b is elastically connected to the inner wall of the mounting cavity through a telescopic spring 301c. The lifting plate 301b is provided with a cut edge 301d; the limiting component 302 includes a guide port 302a provided on the side wall of the mounting groove 301a, a support shaft 302b is rotatably connected in the guide port 302a, an L-shaped locking block 302c is fixedly connected on the support shaft 302b, the guide port 201a is provided with a locking groove 302d that cooperates with the L-shaped locking block 302c, the cut edge 301d cooperates with the spring piece 205d, the spring piece 205d here is elastic enough to push the lifting plate 301b to move.

[0044] In use, when the spring piece 205d enters the strip groove 205b, it can cooperate with the cutting edge 301d and drive the lifting plate 301b to move upward. When the lifting plate 301b moves upward, it can push the L-shaped locking block 302c to deflect. The support shaft 302b is also equipped with a third torsion spring to reset the L-shaped locking block 302c. When the L-shaped locking block 302c deflects, it can be locked into the locking groove 302d of the guide port 201a, further increasing the limiting effect of the limiting groove.

[0045] In summary, when the spring piece 205d enters the strip groove 205b, it can also drive the lifting plate 301b to move upward, causing the L-shaped card block 302c to insert into the card slot 302d, making it more difficult for the insertion block 201b to detach from the guide port 201a, and further maintaining the stability of the fixed connection between the limit box 104 and the base 103.

[0046] Example 3

[0047] Reference Figure 2 and Figure 11This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a disassembly component 400 for the connector used in the safety net 101 for steep slopes, solving the problem of how to disassemble the base 103 and the limiting box 104. It includes a power assembly 401, a mounting port 401a for the base 103, a ring 401b rotatably connected within the mounting port 401a, a hexagonal groove 401c on the inner wall of the ring 401b, and a hexagonal groove 401c fixedly connected within the hexagonal groove 401c. The hexagonal column 401d and the ring 401b are recessed into the base 103, and the base 103 is provided with a cap 401e; the rotating assembly 402 includes a first gear 402a fixedly connected to the hexagonal column 401d, and a second gear 402b that meshes with the first gear 402a is fixedly connected to the side wall of the sleeve 202h. Here, the ring 401b is recessed into the base 103, so that the ring 401b is not easily touched, and even if the cap 401e is detached, the ring 401b is not easily rotated.

[0048] When using the device, if it is necessary to disassemble the limiting box 104, simply open the cap 401e, put the hexagonal sleeve 202h on the hexagonal column 401d, and then rotate the hexagonal column 401d to drive the first gear 402a to rotate. The ring 401b guides the hexagonal column 401d. When the first gear 402a rotates, it can drive the second gear 402b to rotate, causing the sleeve 202h to rotate, which in turn can drive the positioning rod 202d to engage with the second guide groove 202j. At this time, release the hexagonal column 401d and then pull the limiting box 104 to disassemble the limiting box 104.

[0049] In summary, during disassembly, simply rotate the hexagonal column 401d so that the first gear 402a on the hexagonal column 401d drives the second gear 402b to rotate, so that the positioning rod 202d is aligned with the second guide groove 202j. At this time, simply pull out the limiting box 104 to disassemble the limiting box 104, making disassembly relatively convenient.

[0050] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0051] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0052] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A connector for a safety protection net on steep slopes, characterized in that: include, The mounting component (100) includes a protective net (101), a steel cable (102) inserted through the protective net (101), a base (103) disposed on the outside of the steel cable (102), a limiting box (104) disposed on the base (103), and a receiving opening (105) disposed on the limiting box (104). The fixing component (200) includes a guide assembly (201) disposed on the limiting box (104), a rotating assembly (202) disposed on the guide assembly (201), a sliding assembly (203) disposed outside the rotating assembly (202), a stretching assembly (204) disposed on the sliding assembly (203), and a locking assembly (205) disposed on the guide assembly (201). The reinforcing component (300) includes a transmission component (301) disposed on the engaging component (205) and a limiting component (302) disposed on the transmission component (301). The disassembly component (400) includes a power assembly (401) disposed on the limiting box (104) and a rotating assembly (402) disposed in the base (103). The guide assembly (201) includes a guide opening (201a) disposed on the base (103), and an insert (201b) is fixedly connected to the limiting box (104), and the insert (201b) is slidably connected to the guide opening (201a); The rotating assembly (202) includes a cavity (202a) disposed in the base (103), the cavity (202a) having a circular opening (202b), a cylinder (202c) fixedly connected to the limiting box (104), a positioning rod (202d) fixedly connected to the cylinder (202c), an extension groove (202e) disposed in the cavity (202a), a rotating shaft (202f) rotatably connected in the extension groove (202e), a first torsion spring (202g) disposed on the rotating shaft (202f), a sleeve (202h) fixedly connected to the rotating shaft (202f), a first guide groove (202i) cooperating with the positioning rod (202d) disposed on the sleeve (202h), a second guide groove (202j) disposed on the first guide groove (202i), and an annular groove (202k) communicating with the second guide groove (202j). The sliding assembly (203) includes a support seat (203a) fixedly connected to the inner wall of the cavity (202a), a slider (203b) slidably connected to the support seat (203a), a stop groove (203c) provided on the slider (203b), a stop block (203d) that mates with the stop groove (203c) fixedly connected to the support seat (203a), and a first rigid rope (203e) fixedly connected to the slider (203b), one end of the first rigid rope (203e) being fixedly connected to the side wall of the sleeve (202h); The stretching assembly (204) includes an extension block (204a) fixedly connected to the slider (203b), a drive shaft (204b) rotatably connected to the extension block (204a), a second torsion spring (204c) provided on the drive shaft (204b), an inclined block (204d) fixedly connected to the drive shaft (204b), and an arc-shaped block (204e) fixedly connected to the support base (203a). The engaging assembly (205) includes a triangular groove (205a) provided on the insert block (201b), a strip groove (205b) provided on the triangular groove (205a), a bearing rod (205c) fixedly connected to the inner wall of the cavity (202a), a spring piece (205d) fixedly connected to the bearing rod (205c), the spring piece (205d) cooperating with the triangular groove (205a) and the strip groove (205b), a second rigid rope (205e) fixedly connected to the spring piece (205d), one end of the second rigid rope (205e) being fixedly connected to the outer end of the inclined block (204d); The transmission assembly (301) includes a mounting groove (301a) disposed in the insert (201b), a lifting plate (301b) is slidably connected in the mounting groove (301a), the lifting plate (301b) is elastically connected to the inner wall of the mounting cavity through a telescopic spring (301c), and the lifting plate (301b) is provided with a cut edge (301d). The limiting component (302) includes a guide port (302a) disposed on the side wall of the mounting groove (301a), a support shaft (302b) is rotatably connected in the guide port (302a), an L-shaped locking block (302c) is fixedly connected on the support shaft (302b), and a locking groove (302d) that cooperates with the L-shaped locking block (302c) is provided on the guide port (201a). The power assembly (401) includes a mounting port (401a) of a base (103), a ring (401b) is rotatably connected in the mounting port (401a), a hexagonal groove (401c) is provided on the inner wall of the ring (401b), a hexagonal column (401d) is fixedly connected in the hexagonal groove (401c), the ring (401b) is recessed into the base (103), and a cap (401e) is provided on the base (103). The rotating assembly (402) includes a first gear (402a) fixedly connected to a hexagonal prism (401d), and a second gear (402b) that meshes with the first gear (402a) is fixedly connected to the side wall of the sleeve (202h).

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