Anti-falling lock
By designing the slider, swing arm and hole rail structure of the anti-fall lock, the problem of falling of large door bodies during driving failure is solved, and the safety and anti-fall effect is achieved.
Patent Information
- Application Number
- CN202422079506.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-27
AI Technical Summary
Large door bodies may suddenly fall when the driving structure fails suddenly, resulting in damage or injury. The prior art lacks an effective anti-fall structure.
A fall-proof lock is designed, including a slider, swing arm, corrugated rail and hole rail. Through the coordination of the torsion spring and the clamping projection, the clamping projection is snapped into the hole rail hole when the door body falls freely, preventing further landing.
Effectively prevent large door bodies from falling in sudden situations, reduce damage and injury, and provide safety guarantees.
Smart Images
Figure CN223151852U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of anti-falling structures, and particularly provides an anti-falling lock applicable to a door body structure arranged to slide up and down. Background Art
[0002] Large door body structures used in industry can be opened in a side-turning direction or an up-and-down direction. The door body opened in the up-and-down direction is usually arranged to slide, that is, both sides of the door body are slidably connected to a wall body or a bracket structure, and through the arrangement of a driving structure, the door body is driven to slide up and down. The driving structure is usually electrically driven, and sudden power failure and other situations may occur, resulting in the forced stop of the driving structure; in addition, since the driving structure and the door body are usually chain-driven, the chain may also suddenly break. In these emergency situations, due to the large self-weight of the large door body, the door body may suddenly fall on the slideway, damaging the door body or injuring the goods or staff below the door body. Therefore, an anti-falling structure applicable to large door bodies is urgently needed. Content of the Utility Model
[0003] In order to solve the above technical problems, the utility model provides an anti-falling lock.
[0004] The utility model is realized as follows: an anti-falling lock is provided, which includes a slider, a swing arm, a corrugated rail and a hole rail. One side of the slider is fixed on the anti-falling body. The upper end of the swing arm is rotatably connected to the side of the slider away from the anti-falling body through a pin shaft. The corrugated rail and the hole rail are respectively arranged on both sides of the swing arm. A guide wheel is rotatably connected to the side of the lower end of the swing arm close to the corrugated rail, and a clamping protrusion is arranged on the side close to the hole rail. A torsion spring winding column is arranged in the middle of the lower end of the swing arm, and a torsion spring is wound around the torsion spring winding column. One side of the torsion spring is a straight-section torsion spring, and the other side is a bent-section torsion spring. The end of the straight-section torsion spring away from the torsion spring winding column passes through the pin shaft, and the end of the bent-section torsion spring away from the torsion spring winding column is fixedly arranged at the position of the swing arm where the guide wheel is arranged. The bent position of the bent-section torsion spring protrudes towards the direction away from the pin shaft. A torsion spring blocking shaft is arranged on the slider below the swing arm. The bent position of the bent-section torsion spring is lower than the side of the torsion spring blocking shaft close to the swing arm in the normal state. The swing arm starts to swing from the position where the guide wheel is above a wave crest of the corrugated rail, and when the clamping protrusion contacts the hole rail, the clamping protrusion just snaps into a hole of the hole rail.
[0005] Preferably, the upper edge of the clamping protrusion is inclined downward, and the clamping protrusion is integrally arranged with the swing arm.
[0006] Further preferably, a shaft sleeve is sleeved on the outer wall of the torsion spring blocking shaft.
[0007] Further preferably, the torsion spring winding column is a semi-circular head rivet; a hollow rivet is arranged at the position where the swing arm is connected to the guide wheel, and the end of the bent-section torsion spring is fixedly arranged in the hollow of the hollow rivet.
[0008] Further preferably, the anti-falling body is a door body, and the anti-falling locks are arranged on both sides of the door body.
[0009] Compared with the prior art, the advantages of the present utility model are as follows:
[0010] The present utility model provides an anti-falling lock, which can, when the anti-falling body (such as a large industrial door body) freely falls in an emergency, through the rotation of the swing arm, make the clamping protrusion be stuck in the hole of the hole track, prevent the further descent of the anti-falling body, and reduce the occurrence of hazards. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The following further describes the present utility model in detail with reference to the drawings and embodiments:
[0012] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;
[0013] Figure 2 is a front view structural schematic diagram of the present utility model;
[0014] Figure 3 is Figure 1 an enlarged structural schematic diagram of position A in DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0016] Refer to Figure 1 , Figure 2 and Figure 3, the present utility model provides an anti - fall lock, which includes a slider 1, a swing arm 2, a corrugated rail 3 and a hole rail 4. One side of the slider 1 is fixed on the anti - fall body. The upper end of the swing arm 2 is rotatably connected to the side of the slider 1 away from the anti - fall body through a pin shaft 5. The corrugated rail 3 and the hole rail 4 are respectively arranged on both sides of the swing arm 2. A guide wheel 6 is rotatably connected to the side of the lower end of the swing arm 2 close to the corrugated rail 3, and a clamping protrusion 7 is arranged on the side close to the hole rail 4. A torsion spring winding post 8 is arranged in the middle of the lower end of the swing arm 2, and a torsion spring 9 is wound around the torsion spring winding post 8. One side of the torsion spring 9 is a straight - section torsion spring, and the other side is a bent - section torsion spring. The end of the straight - section torsion spring away from the torsion spring winding post 8 passes through the pin shaft 5, and the end of the bent - section torsion spring away from the torsion spring winding post 8 is fixedly arranged at the position of the swing arm 2 where the guide wheel 6 is located. The bent position of the bent - section torsion spring protrudes in the direction away from the pin shaft 5. A torsion spring blocking shaft 10 is arranged on the slider 1 below the swing arm 2. The bent position of the bent - section torsion spring is lower than the side of the torsion spring blocking shaft 10 close to the swing arm 2 in the normal state. The swing arm 2 starts to swing from the position where the guide wheel 6 is above a wave crest of the corrugated rail 3 until the clamping protrusion 7 contacts the hole rail 4, and at this time, the clamping protrusion 7 just snaps into a hole of the hole rail 4.
[0017] In this embodiment, the anti - fall body is a large - scale industrial door body, and the anti - fall locks are arranged on both sides of the door body. The present utility model realizes anti - fall in the following way:
[0018] When the door body is running up and down normally, due to the structural setting of the torsion spring 9, the end of its straight - section torsion spring away from the torsion spring winding post 8 is connected to the pin shaft 5. The pin shaft 5 is fixedly connected to the slider, and the swing arm 2 is rotatably connected to the pin shaft 5. Therefore, the straight - section torsion spring is connected to the slider 1, and the bent - section torsion spring is fixedly connected to the swing arm 2. Under the action of the outward - expanding force of the torsion spring, the guide wheel 6 of the swing arm 2 is pressed on the corrugated rail 3. As the door body moves up and down, the guide wheel 6 walks between the wave crests and wave troughs of the corrugated rail 3. When the driving device of the door body suddenly fails and stops working, and the door body is in a free - falling state, when the guide wheel 6 passes above a wave crest, it receives a centrifugal force under the blocking action of the wave crest, so it will swing towards the direction of the hole rail 4. Due to the relatively large force, at this time, the bent position of the bent - section torsion spring crosses the torsion spring blocking shaft 10, and the clamping protrusion 7 is stuck in the corresponding hole. And because the torsion spring blocking shaft 10 blocks the bent - section torsion spring at this time, the clamping protrusion 7 will remain in the hole, clamping the large - scale door body and preventing it from falling. Anti - fall locks are arranged at both ends, which can share the self - weight pressure of the door body and achieve uniform support.
[0019] In order to facilitate the smooth entry of the clamping protrusion 7 into the hole of the hole rail and to enhance the stability during anti - fall, the upper edge of the clamping protrusion 7 is inclined downward, and the clamping protrusion 7 is integrally arranged with the swing arm 2.
[0020] Preferably, a bushing 12 is sleeved on the outer wall of the torsion spring blocking shaft 10.
[0021] Preferably, the torsion spring winding post 8 is a semi-circular head rivet; a hollow rivet 11 is provided at the position where the swing arm 2 is connected to the guide wheel 6, and the end of the torsion spring of the bent section is fixedly arranged in the hollow of the hollow rivet.
[0022] The above has described in detail the embodiments of the present invention in conjunction with the drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.
Claims
1. A fall arrest lock, characterized in that, It includes a slider (1), a swing arm (2), a corrugated rail (3) and a hole rail (4). One side of the slider (1) is fixed on the anti-falling body. The upper end of the swing arm (2) is rotatably connected to the side of the slider (1) away from the anti-falling body through a pin shaft (5). The corrugated rail (3) and the hole rail (4) are respectively arranged on both sides of the swing arm (2). A guide wheel (6) is rotatably connected to the side of the lower end of the swing arm (2) close to the corrugated rail (3), and a clamping protrusion (7) is arranged on the side close to the hole rail (4). A torsion spring winding post (8) is arranged in the middle of the lower end of the swing arm (2). A torsion spring (9) is wound around the torsion spring winding post (8). One side of the torsion spring (9) is a straight-section torsion spring, and the other side is a bent-section torsion spring. The end of the straight-section torsion spring away from the torsion spring winding post (8) passes through the pin shaft (5). The end of the bent-section torsion spring away from the torsion spring winding post (8) is fixedly arranged at the position of the swing arm (2) where the guide wheel (6) is arranged. The bent position of the bent-section torsion spring protrudes in the direction away from the pin shaft (5). A torsion spring blocking shaft (10) is arranged on the slider (1) below the swing arm (2). The bent position of the bent-section torsion spring is lower than the side of the torsion spring blocking shaft (10) close to the swing arm (2) in the normal state. The swing arm (2) starts to swing from the position where the guide wheel (6) is above a wave crest of the corrugated rail (3). When the clamping protrusion (7) touches the hole rail (4), the clamping protrusion (7) just snaps into a hole of the hole rail (4).
2. The anti-falling lock according to claim 1, characterized in that, The upper edge of the clamping protrusion (7) is inclined downward, and the clamping protrusion (7) is integrally arranged with the swing arm (2).
3. The anti-falling lock according to claim 1, wherein A bushing (12) is sleeved on the outer wall of the torsion spring blocking shaft (10).
4. The anti-falling lock according to claim 1, wherein The torsion spring winding post (8) is a semi-circular head rivet; a hollow rivet (11) is arranged at the position where the swing arm (2) is connected to the guide wheel (6), and the end of the bent-section torsion spring is fixedly arranged in the hollow of the hollow rivet.
5. The anti-falling lock according to claim 1, characterized in that, The anti-falling body is a door body, and the anti-falling lock is arranged on both sides of the door body.