Safe anti-falling device

Abstract

The utility model discloses a safety anti-falling device, which relates to the technical field of house building construction and comprises a movable lifting seat, a protective table arranged at the upper end of the movable lifting seat, a vertical frame fixed on the inner side of the protective table, a rope winding shaft rotatably connected to the vertical frame, and a safety rope wound on the outer side of one end of the rope winding shaft. A driven gear is fixed to the outer side of the other end of the rope winding shaft, a gear motor is fixed to the other end of the vertical frame and located on the outer side of the driven gear, and a driving gear is fixed to the output end of the gear motor and connected with the driven gear in an engaged mode. According to the safety anti-falling device provided by the utility model, the rope winding shaft can be conveniently controlled to rotate forwards or reversely through the integral structural matching design, so that the length of the safety rope can be flexibly adjusted, and the movement range of a worker can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a safety anti-falling device. Background Art

[0002] Building construction is the process of building a building according to the design content, which mainly refers to construction technology and construction organization. Safety is the primary issue that needs to be considered during the construction process. There are also many safety protection measures adopted during the construction process, and fall protection device is one of them.

[0003] For example, the Chinese utility model patent (CN220889356U) discloses a safety anti-fall device for building construction, which states: "It includes a mobile base, a hydraulic lifting mechanism is provided above the mobile base, and a lifting platform is provided at the upper end of the hydraulic lifting mechanism, a guardrail is provided on the lifting platform, and a connecting seat is provided above the guardrail, a support rod is provided above the connecting seat, and a baffle is provided at the upper end of the support rod, a first slide groove is provided on the lower bottom surface of the baffle, and a first sliding seat is connected in the first slide groove, and a safety rope is connected below the first sliding seat."

[0004] The above-mentioned anti-fall device is provided with a safety rope and the safety rope is tied to the worker's body to effectively prevent the worker from falling. However, the length of the safety rope is fixed, which results in the worker's range of movement being restricted after the safety rope is connected to the worker, thereby causing inconvenience in construction. For this reason, the present application proposes a safety anti-fall device. Utility Model Content

[0005] Based on this, it is necessary to provide a safety anti-fall device to address the above technical problems. Through the overall structural coordination design, it is convenient to control the forward or reverse rotation of the rope shaft, and then flexibly adjust the length of the safety rope, thereby realizing the adjustment of the range of activities of the staff.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A safety anti-fall device, which is used in building construction; it includes a mobile lifting seat, a protective platform is provided at the upper end of the mobile lifting seat, a vertical frame is fixed on the inner side of the protective platform, a rope winding shaft is rotatably connected to the vertical frame, a safety rope is wound around the outer side of one end of the rope winding shaft, a driven gear is fixed on the outer side of the other end of the rope winding shaft, a reduction motor is fixed at the other end of the vertical frame and located on the outer side of the driven gear, a driving gear is fixed to the output end of the reduction motor, and the driving gear is meshed with the driven gear.

[0008] As a preferred embodiment of the safety anti-falling device provided by the present invention, a connecting hook is fixed to one end of the safety rope away from the rope winding shaft.

[0009] As a preferred embodiment of the safety anti-fall device provided by the utility model, a hollow ratchet is fixed on one side of the stand, and the hollow ratchet is coaxially arranged with the rope winding shaft. A slide cylinder is slidably connected to the center of the outer side of the rope winding shaft, and a guide rail is provided inside the slide cylinder. A support plate is fixed on the outer side of the slide cylinder and located on the inner side of the hollow ratchet. One end of the support plate is located on the outer side of the slide cylinder and is fixed with at least one fixing bolt in an array. The outer side of each fixing bolt is rotatably connected with a pawl, and the pawl is fitted with the inner side of the hollow ratchet. The outer side of each fixing bolt is also sleeved with a torsion spring, one end of the torsion spring is fixed to the pawl, and the other end of the torsion spring is fixed to the fixing bolt.

[0010] As a preferred embodiment of the safety anti-fall device provided by the utility model, a first positioning hole and a second positioning hole are respectively opened inside the rope winding shaft and on the inner side of the slide cylinder, and a pull rod is slidably connected to the inside of the slide cylinder away from the support plate, and the lower end of the pull rod is slidably connected to the first positioning hole or the second positioning hole respectively.

[0011] As a preferred embodiment of the safety anti-falling device provided by the present invention, a tension spring is fixed between the outer side of the upper end of the pull rod and the slide cylinder. When the tension spring is in the initial state, the pull rod is pulled into the first positioning hole or the second positioning hole.

[0012] As a preferred embodiment of the safety anti-falling device provided by the present invention, an anti-slip plate is fixed to one end of the rope winding shaft away from the driven gear.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The safety anti-fall device provided by the utility model makes it easy to control the forward or reverse rotation of the rope winding shaft through the overall structural coordination design, and then flexibly adjust the length of the safety rope, thereby realizing the adjustment of the worker's range of movement. At the same time, the rotation of the rope winding shaft is conveniently limited by the fit of the pawl and the hollow ratchet wheel, so that when the pawl and the hollow ratchet wheel are fit, the driving reduction motor drives the rope winding shaft to only reel in the rope but not release the rope, so that when the worker falls accidentally, the anti-slip plate can be used to prevent the safety rope from slipping off, effectively improving the safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the solutions in the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the overall structure of the safety anti-falling device provided by the utility model;

[0017] Figure 2 This is a structural diagram of one end of the stand of the safety anti-fall device provided by the utility model;

[0018] Figure 3 This is a schematic structural diagram of the outer side of the rope winding shaft of the safety anti-fall device provided by the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the safety anti-fall device provided by the utility model after the pawl is moved out from the inside of the hollow ratchet;

[0020] Figure 5 This is a structural schematic diagram of the other end of the stand frame of the safety anti-fall device provided by the utility model.

[0021] The markings in the figure are as follows:

[0022] 1. Mobile lifting seat; 2. Protection platform; 3. Stand; 4. Hollow ratchet; 5. Rope winding shaft; 6. Safety rope; 7. Connecting hook; 8. Driven gear; 9. First positioning hole; 10. Second positioning hole; 11. Slide; 12. Pull rod; 13. Tension spring; 14. Support plate; 15. Fixing bolt; 16. Ratchet; 17. Torsion spring; 18. Anti-slip plate; 19. Reducer motor; 20. Driving gear. DETAILED DESCRIPTION

[0023] As described in the background technology, the above-mentioned anti-fall device is provided with a safety rope and the safety rope is tied to the worker's body to effectively prevent the worker from falling. However, the length of the safety rope is fixed, resulting in the worker's range of movement being restricted after the safety rope is connected to the worker, which in turn causes construction inconvenience.

[0024] In order to solve this technical problem, the utility model provides a safety anti-falling device, which is applied to building construction;

[0025] Please refer to Figure 1-5, including a mobile lifting seat 1, a protective platform 2 is provided on the upper end of the mobile lifting seat 1, a vertical frame 3 is fixed on the inner side of the protective platform 2, and a rope winding shaft 5 is rotatably connected to the vertical frame 3. A safety rope 6 is wound around the outer side of one end of the rope winding shaft 5, and a connecting hook 7 is fixed to the end of the safety rope 6 away from the rope winding shaft 5. A driven gear 8 is fixed to the outer side of the other end of the rope winding shaft 5, so that the rotation of the rope winding shaft 5 can be controlled to realize the release or retraction of the safety rope 6, and then after the connecting hook 7 is connected to the staff, the range of movement of the staff can be flexibly adjusted.

[0026] In order to facilitate the rotation of the rope winding shaft 5, a reduction motor 19 is fixed to the other end of the stand 3 and located outside the driven gear 8. A driving gear 20 is fixed to the output end of the reduction motor 19, and the driving gear 20 is meshed and connected with the driven gear 8.

[0027] Furthermore, without the knowledge of the staff, when the reduction motor 19 is started due to accidental touch, the rope winding shaft 5 is driven to rotate to release the safety rope 6. At this time, when the staff falls, the safety rope 6 cannot support the staff, and the safety is poor. In order to improve the safety performance, it is necessary to limit the rotation of the rope winding shaft 5 so that the rope will not be released when the reduction motor 19 is started by accident.

[0028] Specifically, a hollow ratchet 4 is fixed on one side of the stand 3, and the hollow ratchet 4 is coaxially arranged with the rope winding shaft 5. A slide 11 is slidably connected to the center of the outer side of the rope winding shaft 5, and a guide rail is provided inside the slide 11. A support plate 14 is fixed on the outer side of the slide 11 and located on the inner side of the hollow ratchet 4. One end of the support plate 14 is located on the outer side of the slide 11 and is fixed with four fixing bolts 15 in an array. The outer side of each fixing bolt 15 is rotatably connected to a pawl 16, and the pawl 16 is in contact with the inner side of the hollow ratchet 4. A torsion spring 17 is also sleeved on the outer side of each fixing bolt 15, and one end of the torsion spring 17 is fixed to the pawl 16, and the other end of the torsion spring 17 is fixed to the fixing bolt 15.

[0029] The pawl 16 is fitted with the hollow ratchet 4 to facilitate the rotation of the rope winding shaft 5. Figure 2 It can be seen that when the pawl 16 is in contact with the hollow ratchet wheel 4, the rope winding shaft 5 can only reel in the rope but cannot release the rope, thereby effectively improving the safety performance.

[0030] In order to prevent the safety rope 6 from falling off, an anti-falling plate 18 is fixed to the end of the rope winding shaft 5 away from the driven gear 8.

[0031] like Figure 2-4As shown, in order to expand the range of activities of the staff, it is necessary to release the rope, and in order to release the rope, the pawl 16 needs to be moved out from the inside of the hollow ratchet 4. Specifically, the sliding slide 11 drives the support plate 14 to slide, so that the pawl 16 can be moved out from the inside of the hollow ratchet 4, thereby releasing the rotation limit of the rope winding shaft 5.

[0032] At this time, in order to limit the sliding of the slide 11 forward and backward, a first positioning hole 9 and a second positioning hole 10 are respectively opened inside the rope winding shaft 5 and on the inner side of the slide 11. A pull rod 12 is slidably connected to the inner side of the slide 11 away from the support plate 14. The lower end of the pull rod 12 is slidably connected to the first positioning hole 9 and the second positioning hole 10 respectively. A tension spring 13 is fixed between the outer side of the upper end of the pull rod 12 and the slide 11. When the tension spring 13 is in the initial state, it pulls the pull rod 12 to insert into the first positioning hole 9 or the second positioning hole 10.

[0033] The usage process of the safety anti-fall device provided by the present invention is as follows: after connecting the connecting hook 7 to the staff, when it is necessary to release the rope to expand the staff's range of activity, first pull the pull rod 12 to make its lower end slide out from the inside of the first positioning hole 9, and then facilitate the sliding slide 11 to drive the support plate 14 to slide out from the inside of the hollow ratchet 4, so that the pawl 16 and the hollow ratchet 4 are no longer fitted together, and then loosen the pull rod 12, and the elastic characteristics of the tension spring 13 drive the lower end of the pull rod 12 to slide into the second positioning hole 10, fixing the position of the slide 11, at this time starting the reduction motor 19 to drive the driving gear 20 to rotate, and the engagement of the driving gear 20 with the driven gear 8 drives the rope winding shaft 5 to rotate, which is convenient for the rope releasing operation.

[0034] When the rope is released to the required length, the rotation of the rope winding shaft 5 is stopped and the pawl 16 is re-fitted with the hollow ratchet 4, so that starting the reduction motor 19 at this time can only drive the rope winding shaft 5 to reel in the rope but cannot release the rope. At the same time, the self-locking feature of the reduction motor 19 is used to achieve double protection. When the worker falls, the safety rope 6 can provide timely support, which is very safe.

[0035] Specifically, when the rope needs to be reeled in and the pawl 16 is in contact with the hollow ratchet 4 , the rope winding shaft 5 is controlled to rotate to drive the safety rope 6 to reel in the rope, and the pawl 16 is conveniently driven to continuously reset by the torsion spring 17 .

Claims

1. A safety anti-falling device, comprising a movable lifting seat (1), wherein a protective platform (2) is provided at the upper end of the movable lifting seat (1), characterized in that: A stand (3) is fixed on the inner side of the protective platform (2), a rope winding shaft (5) is rotatably connected to the stand (3), a safety rope (6) is wound around the outer side of one end of the rope winding shaft (5), a driven gear (8) is fixed on the outer side of the other end of the rope winding shaft (5), a reduction motor (19) is fixed on the other end of the stand (3) and located outside the driven gear (8), a driving gear (20) is fixed to the output end of the reduction motor (19), and the driving gear (20) is meshed with the driven gear (8).

2. The safety anti-falling device according to claim 1, characterized in that: A connecting hook (7) is fixed to one end of the safety rope (6) away from the rope winding shaft (5).

3. The safety anti-falling device according to claim 1, characterized in that: A hollow ratchet (4) is fixed on one side of the stand (3), and the hollow ratchet (4) is coaxially arranged with the rope winding shaft (5). A slide cylinder (11) is slidably connected at the center of the outer side of the rope winding shaft (5). A guide rail is provided inside the slide cylinder (11), and a support disc (14) is fixed on the outer side of the slide cylinder (11) and located on the inner side of the hollow ratchet (4). One end of the support disc (14) is located on the outer side of the slide cylinder (11) and is fixed with at least one fixing bolt (15). The outer side of each fixing bolt (15) is rotatably connected with a pawl (16), and the pawl (16) is fitted with the inner side of the hollow ratchet (4). The outer side of each fixing bolt (15) is also sleeved with a torsion spring (17), one end of the torsion spring (17) is fixed to the pawl (16), and the other end of the torsion spring (17) is fixed to the fixing bolt (15).

4. The safety anti-falling device according to claim 3, characterized in that: A first positioning hole (9) and a second positioning hole (10) are respectively provided inside the rope winding shaft (5) and on the inner side of the slide cylinder (11); a pull rod (12) is slidably connected inside the end of the slide cylinder (11) away from the support plate (14); and the lower end of the pull rod (12) is slidably connected to the first positioning hole (9) or the second positioning hole (10).

5. The safety anti-falling device according to claim 4, characterized in that: A tension spring (13) is fixed between the outer side of the upper end of the pull rod (12) and the slide cylinder (11). When the tension spring (13) is in an initial state, it pulls the pull rod (12) to be inserted into the first positioning hole (9) or the second positioning hole (10).

6. The safety anti-falling device according to claim 1, characterized in that: An anti-slip plate (18) is fixed to one end of the rope winding shaft (5) away from the driven gear (8).

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