Elevator shaft opening protection structure

Abstract

The application relates to the technical field of elevator shaft protection structures, improves the inconvenient installation and removal of the prior art, and discloses an elevator shaft opening protection structure which comprises a limiting rod, a seat body and two sliding rods, the length of the limiting rod is greater than the width of an elevator door opening, the seat body is abutted against the inner wall of an elevator shaft opening from the inner side of the elevator shaft opening, one end of the sliding rod is slidingly connected to the seat body, the other end is upwardly inclined and abutted against the inner wall of the side of the elevator shaft opening which is away from the seat body, the seat body is provided with a first driving assembly for controlling the mutual approach or separation of the two sliding rods, a blocking net assembly for blocking falling objects is arranged between the two sliding rods, a plurality of blocking rods are rotationally connected to one side of the two sliding rods in the length direction, a second driving assembly is arranged in the sliding rod, and the seat body is provided with a linkage member which enables the second driving assembly to simultaneously control the movement of the blocking rods after the sliding rod slides. The application can provide a convenient-to-install and remove elevator shaft protection structure, so as to increase construction efficiency and increase the service life of the structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of elevator shaft protection structures, and particularly relates to an elevator shaft opening protection structure. BACKGROUND

[0002] During construction, an elevator shaft is usually reserved for installing an elevator after the construction is completed. Since the vertical height of the elevator shaft is high, a protection structure is generally needed during the construction to prevent personnel or objects from falling into the elevator shaft.

[0003] In the prior art, the protection of the elevator shaft opening during construction is usually achieved by directly arranging a fence and a falling prevention net in the elevator shaft opening. The installation of the falling prevention net requires an operator to enter the elevator shaft opening to fix the four edges of the falling prevention net to the inner wall of the elevator shaft opening.

[0004] According to the related art, the protection degree is limited, and the existing structure has poor flexibility. When the elevator shaft opening needs to be temporarily used for construction, the fence and the falling prevention net need to be completely removed, and the entire structure needs to be reinstalled after the use, which is complicated. SUMMARY

[0005] In order to improve the inconvenience of installation and removal of the prior art, the present application provides an elevator shaft opening protection structure.

[0006] The following technical scheme is adopted:

[0007] The elevator shaft opening protection structure comprises a limiting rod, a seat body and two sliding rods. The length of the limiting rod is greater than the width of the elevator door opening. The seat body is connected to the middle part of the limiting rod and can extend into the elevator shaft opening. The seat body is abutted to the inner wall of the elevator shaft opening from the inner side of the elevator shaft opening. One end of the sliding rod is slidingly connected to the seat body, and the other end is inclined upward and abutted to the inner wall of the elevator shaft opening away from the seat body. The seat body is provided with a first driving assembly for controlling the two sliding rods to move close to or away from each other. A blocking net assembly for blocking falling objects is arranged between the two sliding rods. A plurality of blocking rods are rotationally connected to one side of the two sliding rods away from each other along the length direction. A second driving assembly for controlling the blocking rods to abut to the inner wall of the elevator shaft opening is arranged in the sliding rod. The seat body is provided with a linkage for controlling the second driving assembly to simultaneously control the movement of the blocking rods after the movement of the sliding rod.

[0008] By adopting the technical scheme, the limiting rod is erected outside the elevator shaft, the seat body is extended into the elevator shaft hole from the elevator door hole and erected, the sliding rod is abutted against the inner wall of the elevator shaft hole from the seat body, the sliding rod is erected in the elevator shaft hole to support the screen assembly, the sliding rod is slidingly connected to the seat body, the screen assembly is conveniently unfolded and stored, the blocking rod can fill the edge of the sliding rod, and the protection range of the elevator shaft hole is increased.

[0009] Optionally, the seat body comprises a base strip and a connecting strip, the base strip is longitudinally cut in an inverted L shape, and one end of the connecting strip is rotationally connected to the base strip along the length direction of the base strip, and the other end is slidingly connected to the two sliding rods.

[0010] By adopting the technical scheme, the base strip is provided in an inverted L shape, the base strip can be erected at the junction of the elevator shaft hole and the elevator door hole, the sliding rod can be effectively supported during erection, and the seat body is prevented from sliding.

[0011] Optionally, a sliding groove is formed in one side of the connecting strip along the length direction, one end of the sliding rod is provided with a sliding block capable of sliding in the sliding groove, the first driving assembly comprises a bidirectional screw rod and a driving piece, the bidirectional screw rod is rotationally connected in the sliding groove, the bidirectional screw rod penetrates through the sliding block and is threadedly connected with the sliding block, the driving piece is arranged on the connecting strip and located close to the middle part of the bidirectional screw rod, and the driving piece drives the bidirectional screw rod to rotate.

[0012] By adopting the technical scheme, a driving mode of the sliding rod is provided, the bidirectional screw rod is driven to rotate to drive the sliding block threadedly connected therewith to move, the sliding block is limited in cooperation with the sliding groove to prevent the sliding block from rotating, the sliding block is driven to move to drive the sliding rod to move, and the two sliding rods are close to or away from each other, so that the screen assembly is unfolded or stored.

[0013] Optionally, the driving piece is connected with a driving bevel gear at the output end, the middle part of the bidirectional screw rod is coaxially connected with a driven bevel gear, and the driving bevel gear is meshed with the driven bevel gear.

[0014] By adopting the technical scheme, the setting position of the driving piece is adjusted by cooperation of the driving bevel gear and the driven bevel gear, so that the driving piece can be arranged at a suitable position to avoid collision of the driving piece when the connecting block rotates.

[0015] Optionally, the blocking net assembly comprises a first connecting rod, a second connecting rod, a plurality of first supporting rods and a plurality of second supporting rods, one end of the first connecting rod is rotatably connected to the slide rod, the second connecting rod is rotatably connected to adjacent slide rods, the first connecting rod and the second connecting rod are cross-connected in the middle, the other end of the first connecting rod is rotatably connected to one of the second supporting rods, the second connecting rod is rotatably connected to one of the first supporting rods, the first supporting rods are arranged in parallel, and the two ends of the first supporting rods are rotatably connected to the corresponding second supporting rods, and the first supporting rods and the second supporting rods form a continuous parallelogram structure.

[0016] By adopting the above technical scheme, the first supporting rods and the second supporting rods are interwoven to form a parallelogram net structure, and the first supporting rods and the second supporting rods are matched to block people or large objects from entering the elevator shaft, thereby ensuring the safety of the elevator shaft. In addition, through the cooperation of the first connecting rod and the second connecting rod, and the rotatable connection of the first supporting rods and the second supporting rods, the blocking net assembly can be expanded when the slide rods move away from each other to provide a larger protection area, and can be retracted when the slide rods move closer to each other to facilitate storage of the blocking net assembly.

[0017] Optionally, a plurality of connecting grooves are arranged along the length of the side of the slide rod that moves closer to each other, and a plurality of connecting blocks are slidably connected in the connecting grooves, and the first supporting rods and the second supporting rods are rotatably connected to the corresponding connecting blocks.

[0018] By adopting the above technical scheme, the first supporting rods and the second supporting rods are rotatably connected through the connecting blocks, so that the structure is more stable. If the first supporting rods and the second supporting rods are directly connected to the inner wall of the slide rod, the connecting blocks can be adaptively adjusted in position as the slide rod moves, so that the first supporting rods and the second supporting rods can be expanded and retracted more conveniently.

[0019] Optionally, a limiting column is arranged on the connecting block, and a limiting groove is arranged on the outer wall of the slide rod along the sliding path of the connecting block, and the limiting column is slidably connected in the limiting groove.

[0020] By adopting the above technical scheme, the movement of the connecting block is limited, so that the sliding of the connecting block is more stable, and the connecting block is prevented from being separated during sliding.

[0021] Optionally, the first supporting rods and the second supporting rods are connected through a hinge column, and a supplementary rod parallel to the slide rod is arranged at one end of the hinge column.

[0022] By adopting the above technical scheme, the gap in the middle of the parallelogram structure formed by the first supporting rods and the second supporting rods is blocked by the supplementary rod, so that the covering effect of the blocking net assembly is better.

[0023] Optionally, the second driving assembly comprises a driving column, a pull rope, a plurality of connecting ropes and an elastic member, one end of the pull rope is connected to the driving column, the driving column is rotationally connected to the slide rod near one end of the connecting strip, the driving column can wind the pull rope, the end of the pull rope is connected to the blocking rod farthest from the connecting strip, the blocking rods are connected by the connecting ropes, and the elastic member is connected to the blocking rod closest to the connecting strip, and the elastic member enables the blocking rod to always have a tendency to rotate to the initial position.

[0024] By adopting the above technical scheme, the farthest blocking rod is rotated and extended to abut against the inner wall of the elevator shaft hole by winding the pull rope through the rotation of the driving column, and the adjacent blocking rods are sequentially pulled out by the plurality of connecting ropes, so that the plurality of blocking rods are all extended outward, thereby supplementing the gap between the slide rod and the sidewall of the elevator shaft hole and providing larger range of blocking protection.

[0025] Optionally, the linkage comprises a rack and a gear, the gear is coaxially connected to the driving column, one end of the rack is parallel to the length of the connecting strip and is connected to the connecting strip, the slide rod is provided with a linkage groove for the rack to pass through, and the gear is engaged with the rack.

[0026] By adopting the above technical scheme, the gear is rotated and the driving column is driven to rotate by the relative movement of the gear and the rack caused by the movement of the slide rod, so as to finally control the retraction or extension of the blocking rod, and the gear and the rack are self-locked due to the movement of the slide rod, so that the structure is more stable.

[0027] In summary, the present application has at least one of the following beneficial effects:

[0028] 1. The slide rod is inclined and arranged in the elevator shaft hole to support the blocking net assembly, and the slide rod slides to deploy and store the blocking net assembly, so as to provide a convenient installation and removal elevator shaft protection structure, increase construction efficiency, and increase the service life of the structure.

[0029] 2. The blocking rod supplements the gap between the slide rod and the sidewall of the elevator shaft hole to provide larger range of blocking protection. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic diagram of the installation of the embodiment in the elevator shaft;

[0031] Figure 2 is a schematic diagram of the overall structure of the embodiment;

[0032] Figure 3 is a schematic diagram of the top view of the embodiment;

[0033] Figure 4is a side view of the embodiment;

[0034] Figure 5 is a schematic diagram of the driving member structure.

[0035] The following table shows the meaning of the reference signs: 1, elevator shaft; 11, elevator shaft hole; 12, elevator door hole; 2, limiting rod; 3, seat body; 31, base strip; 32, connecting strip; 321, sliding groove; 4, sliding rod; 41, sliding block; 42, connecting groove; 421, limiting groove; 43, connecting block; 431, limiting column; 5, blocking rod; 6, blocking net assembly; 61, first connecting rod; 62, second connecting rod; 63, first supporting rod; 64, second supporting rod; 65, supplementary rod; 7, first driving assembly; 71, bidirectional screw rod; 711, driven bevel gear; 72, driving member; 721, driving bevel gear; 8, second driving assembly; 81, driving column; 82, pull rope; 83, connecting rope; 84, elastic member; 9, linkage member; 91, rack; 92, gear. DETAILED DESCRIPTION

[0036] The following will be described in detail with reference to the accompanying drawings. Figure 1 to the accompanying drawings. Figure 5 The present application will be described in further detail.

[0037] Reference will be made to Figure 1 and Figure 2 , the embodiment of the present application discloses an elevator shaft hole protection structure, which comprises a limiting rod 2, a seat body 3 and two sliding rods 4. The limiting rod 2 is close to the ground, and the length of the limiting rod 2 is greater than the width of the bottom of the elevator door hole 12, so that the limiting rod 2 can be clamped on the edge of the elevator shaft 1 to provide support for the subsequent structure. The seat body 3 is connected to the middle position of the limiting rod 2, and the width of the seat body 3 is less than the width of the elevator door hole 12, so that the seat body 3 can extend into the elevator shaft hole 11, and the seat body 3 extends into the elevator shaft hole 11 to the inner wall of part of the seat body 3, which can abut the inner wall of the hole on the lower side from the inside to the outside. One end of the sliding rod 4 is slidingly connected to the seat body 3, and the other end is inclined upward and abuts the inner wall on the side of the hole away from the seat body 3, so as to cooperate with the seat body 3 to form a support inclined and arranged in the hole. The seat body 3 is provided with a first driving assembly 7 for controlling the mutual approach or separation of the two sliding rods 4. The blocking net assembly 6 for blocking falling objects is arranged between the two sliding rods 4. The side away from each other of the two sliding rods 4 is arrayed with a plurality of blocking rods 5 connected in rotation along the length direction. The sliding rod 4 is provided with a second driving assembly 8 for controlling the blocking rod 5 to rotate to abut the inner wall of the hole. The seat body 3 is provided with a linkage member 9 for simultaneously controlling the movement of the blocking rod 5 by the second driving assembly 8 after the movement of the sliding rod 4. The sliding rod 4 is inclined and arranged in the elevator shaft hole 11 from the seat body 3, so as to support the blocking net assembly 6; at the same time, the sliding rod 4 is slidingly connected to the seat body 3, which facilitates the unfolding and storage of the blocking net assembly 6, and the blocking rod 5 can fill the edge of the sliding rod 4 to increase the protection range of the elevator shaft hole 11.

[0038] With reference to Figures 2 to 4 Further, the seat body 3 comprises a base strip 31 and a connecting strip 32, the base strip 31 is in longitudinal cutting shape inverted L-shaped, one end of the base strip 31 is fixedly connected to the limiting rod 2, the other end of the base strip 31 extends into the elevator shaft hole 11 from the elevator door hole 12, and the corner of the base strip 31 is hooked with the edge of the elevator shaft hole 11, so that the abutment of the slide rod 4 and the inner wall of the elevator shaft hole 11 is more stable. One end of the connecting strip 32 is rotationally connected to the base strip 31 along the length direction of the base strip 31, and the other end of the connecting strip 32 is slidably connected to the two slide rods 4. The base strip 31 is arranged in inverted L-shaped, which can be erected at the intersection of the elevator shaft hole 11 and the elevator door hole 12, so that the slide rod 4 can be effectively supported during erection, preventing the seat body 3 from sliding. The connecting strip 32 is rotationally connected to the base strip 31, so that the slide rod 4 can be erected after rotation during setting, and installation and removal are more convenient.

[0039] With reference to Figures 2 to 4 With reference to Figure 3 Further, a sliding groove 321 is formed in one side of the connecting strip 32 along the length direction, and the sliding groove 321 is vertically cut in rectangular shape. One end of the slide rod 4 is provided with a sliding block 41 which can slide in the sliding groove 321, and the sliding block 41 is rectangular corresponding to the sliding groove 321. The first driving assembly 7 comprises a bidirectional screw rod 71 and a driving member 72, the bidirectional screw rod 71 is rotationally connected in the sliding groove 321, the bidirectional screw rod 71 penetrates through the sliding block 41 and is threadedly connected with the sliding block 41, and the driving member 72 is arranged on the connecting strip 32 close to the middle part of the bidirectional screw rod 71, and the driving member 72 drives the bidirectional screw rod 71 to rotate. The bidirectional screw rod 71 drives the sliding block 41 connected therewith to move through rotation, and the sliding block 41 cooperates with the sliding groove 321 to provide limitation to prevent the sliding block 41 from rotating, and the sliding block 41 drives the slide rod 4 to move, so that the two slide rods 4 are close to or away from each other, thereby unfolding or folding the screen assembly 6.

[0040] With reference to Figure 5 Further, the driving member 72 is a stepping motor, the driving member 72 is connected to the outer side of the connecting strip 32, the output end of the driving member 72 penetrates through the outer wall of the connecting strip 32 into the sliding groove 321, the output end of the driving member 72 is connected with a driving bevel gear 721, and a driven bevel gear 711 is coaxially connected at the middle part of the bidirectional screw rod 71, and the driving bevel gear 721 is engaged with the driven bevel gear 711. The setting position of the driving member 72 is adjusted through the cooperation of the driving bevel gear 721 and the driven bevel gear 711, so that the driving member 72 can be arranged at a suitable position to avoid collision of the driving member 72 when the connecting block 43 rotates.

[0041] With reference to Figures 2 to 4Furthermore, the barrier assembly 6 includes a first connecting rod 61, a second connecting rod 62, a plurality of first support rods 63, and a plurality of second support rods 64. One end of the first connecting rod 61 is rotatably connected to a sliding rod 4, and the second connecting rod 62 is rotatably connected to an adjacent sliding rod 4. The first connecting rod 61 and the second connecting rod 62 intersect at the middle to form an X-shaped structure, and the intersection point of the first connecting rod 61 and the second connecting rod 62 is rotatably connected to one of its second support rods 64, and the second connecting rod 62 is rotatably connected to one of its first support rods 63, and the first support rods 63 and the second support rods 64 also intersect at the middle to form an X-shaped structure. The plurality of first support rods 63 are arranged parallel to each other, and the plurality of second support rods 64 are also arranged parallel to each other. The two ends of the first support rod 63 are respectively rotatably connected to the corresponding second support rods 64, and the first support rods 63 and the second support rods 64 form a continuous parallelogram structure. A number of first support rods 63 and a number of second support rods 64 interweave to form a parallelogram mesh structure. The cooperation of the first support rods 63 and the second support rods 64 prevents people or large objects from entering the elevator shaft 11, thereby ensuring the safety of the elevator shaft 1. In addition, through the cooperation of the first connecting rod 61 and the second connecting rod 62, and the rotational connection of the first support rods 63 and the second support rods 64, the barrier assembly 6 can unfold as the sliding rods 4 move away from each other to provide a larger protection area, and can also retract as the sliding rods 4 move closer to each other to facilitate the storage of the barrier assembly 6.

[0042] Reference Figures 2 to 4 Furthermore, several elongated connecting slots 42 are arranged along the length of the sides of the sliding rods 4 that are close to each other. Several connecting blocks 43 are slidably connected in the connecting slots 42, with parts of the connecting blocks 43 extending out of the connecting slots 42. The first support rod 63 and the second support rod 64 are rotatably connected to the corresponding connecting blocks 43. By rotating the first support rod 63 and the second support rod 64 through the connecting blocks 43, the structure becomes more stable. The first support rod 63 and the second support rod 64 are placed directly connected to the inner wall of the sliding rod 4. As the sliding rod 4 moves, the position of the connecting blocks 43 can be adaptively adjusted, making it easier to unfold and retract the first support rod 63 and the second support rod 64.

[0043] Reference Figures 2 to 4 Furthermore, a limiting post 431 is provided on the connecting block 43, and a limiting groove 421 is provided on the outer wall of the slide rod 4 along the sliding path of the connecting block 43. The limiting groove 421 is straight, and the limiting post 431 is set perpendicular to the movement direction of the connecting block 43, and the limiting post 431 is slidably connected in the limiting groove 421. This provides a limit for the movement of the connecting block 43, making the sliding of the connecting block 43 more stable and preventing the connecting block 43 from detaching during the sliding process.

[0044] Reference Figures 2 to 4Further, the first supporting rod 63 and the second supporting rod 64 are connected through a hinge column, one end of the hinge column is provided with a supplementary rod 65 parallel to the slide rod 4, and the supplementary rods 65 abut against each other when the two slide rods 4 are retracted to the limit. The gap in the middle of the parallelogram structure formed by the first supporting rod 63 and the second supporting rod 64 is blocked by the supplementary rod 65, so that the covering effect of the screen assembly 6 is better.

[0045] Further, the second driving assembly 8 comprises a driving column 81, a pull rope 82, a plurality of connecting ropes 83 and an elastic member 84. The elastic member 84 is a tension spring. One end of the pull rope 82 is connected to the driving column 81, the driving column 81 is rotationally connected to the slide rod 4 near one end of the connecting strip 32, the driving column 81 can wind the pull rope 82, and the pull rope 82 is connected to the farthest screen rod 5 away from the connecting strip 32. One end of the screen rod 5 is hingedly connected to the slide rod 4, and the other end extends outward. The screen rods 5 are connected through the connecting ropes 83, and the pull rope 82 and the connecting rope 83 are connected at positions close to the hinge points. The elastic member 84 is connected to the screen rod 5 closest to the connecting strip 32, and the elastic member 84 causes the screen rod 5 to always have a tendency to rotate to the initial position. The driving column 81 is rotated to wind or release the pull rope 82, the pull rope 82 drives the farthest screen rod 5 to rotate when winding, so that the farthest screen rod 5 extends to abut against the inner wall of the elevator shaft 11, and the plurality of connecting ropes 83 sequentially pull the adjacent screen rods 5 outward, so that the plurality of screen rods 5 extend outward, thereby supplementing the gap between the slide rod 4 and the side wall of the elevator shaft 11, and providing a wider range of blocking protection.

[0046] With reference to Figures 2 to 4 Further, the linkage 9 comprises a rack 91 and a gear 92, the gear 92 is provided with two ends coaxially connected to the two ends of the driving column 81 and is connected between the two gears 92. One end of the rack 91 is connected to the connecting strip 32 in parallel with the length of the connecting strip 32, the slide rod 4 is provided with a linkage groove for the rack 91 to pass through, and the gear 92 is engaged with the rack 91. The movement of the slide rod 4 causes the gear 92 and the rack 91 to move relatively, so that the gear 92 rotates and drives the driving column 81 to rotate, so as to wind or release the pull rope 82, thereby finally controlling the retraction or extension of the screen rod 5. Meanwhile, the gear 92 and the rack 91 will be self-locked due to the movement of the slide rod 4, and the structure is more stable.

[0047] Further, in order to protect the blocking effect of the structure, a wooden board, an iron plate or a mesh with a smaller aperture can be laid on the surface.

[0048] The implementation principle of the elevator shaft opening protection structure in the embodiment of the application is as follows:

[0049] In use, the seat body 3 is erected from the elevator door opening 12 into the elevator shaft 11, and the limiting rod 2 is erected outside the elevator shaft 1, the connecting strip 32 and the slide rod 4 are rotated and erected into the elevator shaft 11 from top to bottom, and are tilted against the inner wall of the elevator shaft 11, the bidirectional screw rod 71 is rotated by the driving member 72 to move the slide rod 4, the gear 92 moves relative to the rack 91 while the slide rod 4 moves, the blocking rod 5 is unfolded outward, and thus a protection against the vertical projection of the elevator shaft 11 is formed to prevent people or objects from falling.

[0050] In recycling, the slide rod 4 and the blocking net assembly 6 can be stored by reversing the driving member 72, and the slide rod 4 and the connecting strip 32 are rotated to be folded with the seat body 3, and thus the protection structure can be taken out.

[0051] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An elevator shaft opening protection structure, characterized by: The utility model relates to an elevator shaft hole falling object blocking device, including limiting rod (2), seat body (3) and two slide rods (4), the limiting rod (2) length is greater than elevator door hole (12) width, the seat body (3) is connected in the middle part of limiting rod (2) and can extend into elevator shaft hole (11) inside, the seat body (3) is by elevator shaft hole (11) inside abutment elevator shaft hole (11) inner wall, the slide rod (4) one end sliding connection is in seat body (3), the other end is inclined and abuts on the inner wall of the inner wall of elevator shaft hole (11) away from seat body (3) one side, the seat body (3) is provided with the first drive assembly (7) of controlling two slide rods (4) each other is close or is far from, and the blocking net assembly (6) for blocking falling object is arranged between two slide rods (4), and the side of two slide rods (4) each other is away from is arrayed rotationally connected with a plurality of blocking rods (5) along the length direction, the slide rod (4) is provided with the second drive assembly (8) for controlling the blocking rod (5) rotation to abut on the inner wall of elevator shaft hole (11), and the seat body (3) is provided with linkage (9) when the slide rod (4) slides and makes second drive assembly (8) control blocking rod (5) movement simultaneously; The seat body (3) includes a base strip (31) and a connecting strip (32), the base strip (31) is longitudinally cut in an inverted L shape, one end of the connecting strip (32) is rotationally connected to the base strip (31) along the length direction of the base strip (31), and the other end is slidingly connected to the two slide rods (4); The second drive assembly (8) includes a drive column (81), a pull rope (82), a plurality of connecting ropes (83), and an elastic member (84), one end of the pull rope (82) is connected to the drive column (81), the drive column (81) is rotationally connected to one end of the slide rod (4) close to the connecting strip (32), the drive column (81) can wind the pull rope (82), the end of the pull rope (82) is connected to the blocking rod (5) farthest from the connecting strip (32), the blocking rods (5) are connected by the connecting ropes (83), and the elastic member (84) is connected to the blocking rod (5) closest to the connecting strip (32), the elastic member (84) causes the blocking rod (5) to always have a tendency to rotate to an initial position; The linkage (9) includes a rack (91) and a gear (92), the gear (92) is coaxially connected to the drive column (81), the rack (91) is parallel to the length direction of the connecting strip (32), one end of the rack (91) is connected to the connecting strip (32), the slide rod (4) is provided with a linkage groove for the rack (91) to pass through, and the gear (92) is engaged with the rack (91).

2. An elevator shaft opening guard structure according to claim 1, characterized in that: One side of the connecting strip (32) is provided with a sliding groove (321) penetrating along the length direction, one end of the sliding rod (4) is provided with a sliding block (41) which can slide in the sliding groove (321), the first driving assembly (7) comprises a bidirectional screw rod (71) and a driving piece (72), the bidirectional screw rod (71) is rotationally connected in the sliding groove (321), the bidirectional screw rod (71) penetrates through the sliding block (41) and is threadedly connected with the sliding block (41), the driving piece (72) is arranged on the connecting strip (32) close to the middle part of the bidirectional screw rod (71), and the driving piece (72) drives the bidirectional screw rod (71) to rotate.

3. An elevator shaft opening guard structure according to claim 2, characterized in that: The output end of the driving piece (72) is connected with a driving bevel gear (721), the middle part of the bidirectional screw rod (71) is coaxially connected with a driven bevel gear (711), and the driving bevel gear (721) is in mesh with the driven bevel gear (711).

4. A shaft opening guard structure according to claim 1, wherein: The blocking net assembly (6) comprises a first connecting rod (61), a second connecting rod (62), a plurality of first supporting rods (63) and a plurality of second supporting rods (64), one end of the first connecting rod (61) is rotationally connected with the sliding rod (4), the second connecting rod (62) is rotationally connected with the adjacent sliding rod (4), the middle parts of the first connecting rod (61) and the second connecting rod (62) are crossed and rotationally connected, the other end of the first connecting rod (61) is rotationally connected with one of the second supporting rods (64), the second connecting rod (62) is rotationally connected with one of the first supporting rods (63), a plurality of the first supporting rods (63) are arranged in parallel with each other, and the two ends of the first supporting rod (63) are respectively rotationally connected with corresponding second supporting rods (64), and the first supporting rod (63) cooperates with the second supporting rod (64) to form a continuous parallelogram structure.

5. An elevator shaft access protection structure according to claim 4, characterized in that: The sliding rod (4) is provided with a plurality of connecting grooves (42) penetrating along the length direction on one side close to each other, a plurality of connecting blocks (43) are slidably connected in the connecting grooves (42), and the first supporting rod (63) and the second supporting rod (64) are both rotationally connected with corresponding connecting blocks (43).

6. An elevator shaft access protection structure according to claim 5, wherein: A limiting column (431) is arranged on the connecting block (43), a limiting groove (421) is arranged on the outer wall of the sliding rod (4) along the sliding path of the connecting block (43), and the limiting column (431) is slidably connected in the limiting groove (421).

7. A shaft opening guard structure according to claim 4, wherein: The first supporting rod (63) and the second supporting rod (64) are connected through a hinge column, one end of the hinge column is provided with a supplementary rod (65) parallel to the sliding rod (4), and the supplementary rod (65) blocks the gap in the middle part of the parallelogram structure formed by the first supporting rod (63) and the second supporting rod (64).

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