Safety tongs triggering structure for elevator
By designing a safety clamp structure that combines automatic and manual triggering, and utilizing a wire rope system and guide wheel assembly, the problem of existing elevator safety clamps being unable to trigger automatically has been solved, achieving flexible and safe braking control of the elevator.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2026-03-06
AI Technical Summary
Existing elevator safety brakes cannot be triggered or opened by the operator, and the braking method is limited and lacks flexibility.
A safety clamp triggering structure combining automatic and manual triggering modes was designed. Utilizing a progressive safety clamp and wire rope system, the tension of the long wire rope is controlled by gravity and a manual handle to achieve automatic and manual triggering of the progressive safety clamp. Combined with components such as guide wheels and limit plates, it ensures that the safety clamp can automatically lock onto the guide rail when the elevator descends, and can also be manually controlled by the operator.
It realizes diversified triggering methods for the safety clamp, enhances safety performance, and can automatically brake in case of overspeed, as well as be manually controlled by the operator, thereby improving the flexibility and safety of elevator operation.
Smart Images
Figure CN223973631U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of safety clamp technology, and in particular to a safety clamp triggering structure for elevators. Background Technology
[0002] The safety clamp is a safety protection device for elevator installation platforms. A safety clamp device is a safety device that brakes the elevator installation platform and clamps it onto the guide rails in the event of exceeding the speed limit set by the speed governor, or in the event of a breakage or slack in the working wire rope. Its function is to protect the safe operation of the elevator, and it is generally installed on a load cell parallel to the guide rails. Elevator installation platforms typically use progressive safety clamps. The safety clamp device consists of two parts: a safety clamp triggering mechanism and a safety clamp body. When the safety clamp mechanism actuates, the triggering mechanism activates the safety clamp wedge to lock onto the guide rails, causing the platform to brake and stop on the guide rails.
[0003] Currently, elevator platform safety brakes have some drawbacks in use. For example, most existing safety brakes rely on sudden, overspeed drops to automatically lock the guide rails for braking, and cannot be triggered or released manually by the operator. Therefore, we propose a safety brake triggering structure for elevators. Utility Model Content
[0004] The purpose of this invention is to provide a safety clamp triggering structure for elevators to overcome the technical problems existing in the prior art.
[0005] To achieve the above-mentioned technical objectives and effects, this utility model provides the following technical solution:
[0006] An elevator safety clamp triggering structure includes a safety platform. Vertical beams are connected to the left and right sides of the bottom of the safety platform. A horizontal beam is connected to the middle section of the bottom of the safety platform. An upper guide wheel assembly is connected to the bottom of the horizontal beam. A clearance opening is provided in the center of the bottom wall of the safety platform. A movable plate passes through the clearance opening. A safety lock fixing plate is connected to the top left side of the movable plate. A safety lock is connected to the top of the safety lock fixing plate. An electrical control box is connected to the outer wall of the safety lock. A handle is installed on the top right side of the movable plate.
[0007] Preferably, in a safety clamp triggering structure for an elevator, a progressive safety clamp is installed on the outer wall of the vertical beam, a tension spring is connected between the bottom of the progressive safety clamp and the vertical beam, a safety clamp pull plate is connected to the free end of the progressive safety clamp, a short steel wire rope is connected to the upper end of the safety clamp pull plate, and the short steel wire rope is wound around to the inner wall of the vertical beam through a guide wheel.
[0008] Preferably, in a safety clamp triggering structure for an elevator, a limit plate and a return spring are connected to the inner wall of the vertical beam, a counterweight is connected to the end of the return spring, and the end of the short steel wire rope passes through the limit plate, the return spring and the counterweight in sequence. A fastening bolt is fixed between the counterweight and the short steel wire rope.
[0009] Preferably, in a safety clamp triggering structure for an elevator, each of the vertical beams has a long groove, and a bushing is slidably installed in the long groove, with the bushing being fixedly connected to a counterweight.
[0010] Preferably, in a safety clamp triggering structure for an elevator, a rope buckle is connected to the outer wall of the handle, a long steel wire rope passes through the rope buckle, the long steel wire rope passes through the gap of the upper guide wheel assembly, and two sets of short steel wire ropes are respectively fixed at both ends of the long steel wire rope by steel wire rope clamps.
[0011] Preferably, in a safety clamp triggering structure for an elevator, limit blocks are installed on both sides of the outer wall of the right side of the moving plate, the handle is located between the two limit blocks, and the moving plate has a built-in trigger spring.
[0012] The beneficial effects of this utility model are:
[0013] This utility model features a reasonable structural design and multiple safety clamp triggering modes. When the progressive safety clamp descends rapidly with the safety platform, the moving plate is tightened by gravity, pulling the long steel wire rope. Two sets of short steel wire ropes are connected to both sides of the long steel wire rope. The progressive safety clamp is connected to the short steel wire ropes through the safety clamp pull plate. The lower part of the progressive safety clamp is pulled by a tension spring, which in turn triggers the progressive safety clamp. The progressive safety clamp can automatically trigger the locking guide rail to achieve braking, and can also be manually triggered by the operator. The operator can directly control the tension of the long steel wire rope using the handle, thereby controlling the triggering and unlocking of the progressive safety clamp, making the safety performance more comprehensive. Attached Figure Description
[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;
[0016] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;
[0017] Figure 3 for Figure 1A magnified view of a portion of point A in the middle;
[0018] Figure 4 for Figure 1 A magnified view of a portion of point B in the middle;
[0019] Figure 5 for Figure 1 A magnified view of a portion of point C in the middle;
[0020] Figure 6 for Figure 2 A magnified view of a portion of point D.
[0021] In the diagram: 1. Safety platform; 2. Vertical beam; 3. Horizontal beam; 4. Upper guide wheel assembly; 5. Clearance opening; 6. Moving plate; 7. Safety lock fixing plate; 8. Safety lock; 9. Handle; 10. Electrical control box; 11. Progressive safety clamp; 12. Tension spring; 13. Safety clamp pull plate; 14. Short steel wire rope; 15. Guide wheel; 16. Limit plate; 17. Return spring; 18. Counterweight; 19. Fastening bolt; 20. Long groove; 21. Bushing; 22. Rope buckle; 23. Long steel wire rope; 24. Steel wire rope clamp; 25. Limit block; 26. Trigger spring. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-6 As shown, this embodiment is a safety clamp triggering structure for an elevator, including a safety platform 1. Vertical beams 2 are connected to the left and right sides of the bottom of the safety platform 1. A horizontal beam 3 is connected to the middle section of the bottom of the safety platform 1. An upper guide wheel assembly 4 is connected to the bottom of the horizontal beam 3. A clearance opening 5 is provided in the center of the bottom wall of the safety platform 1. A movable plate 6 passes through the clearance opening 5. A safety lock fixing plate 7 is connected to the top left side of the movable plate 6. A safety lock 8 is connected to the top of the safety lock fixing plate 7. An electrical control box 10 is connected to the outer wall of the safety lock 8. A handle 9 is installed on the top right side of the movable plate 6.
[0024] A progressive safety clamp 11 is installed on the outer wall of the vertical beam 2. A tension spring 12 is connected between the bottom of the progressive safety clamp 11 and the vertical beam 2. A safety clamp pull plate 13 is connected to the free end of the progressive safety clamp 11. A short steel wire rope 14 is connected to the upper end of the safety clamp pull plate 13. The short steel wire rope 14 is wound around to the inner wall of the vertical beam 2 through the guide wheel 15.
[0025] The inner wall of the vertical beam 2 is connected to a limit plate 16 and a return spring 17. The end of the return spring 17 is connected to a counterweight 18. The end of the short steel wire rope 14 passes through the limit plate 16, the return spring 17 and the counterweight 18 in sequence. A fastening bolt 19 is fixed between the counterweight 18 and the short steel wire rope 14.
[0026] Each vertical beam 2 has a long groove 20, and a bushing 21 is slidably installed in the long groove 20. The bushing 21 is fixedly connected to the counterweight 18. By using the design of the long groove 20 and the bushing 21, the movement trajectory of the counterweight 18 is fixed in the up-and-down movement state.
[0027] The outer wall of the handle 9 is connected to a rope buckle 22, and a long steel wire rope 23 passes through the rope buckle 22. The long steel wire rope 23 passes through the gap of the upper guide wheel assembly 4, and the two ends of the long steel wire rope 23 are respectively fixed with two sets of short steel wire ropes 14 by steel wire rope clamps 24.
[0028] Limiting blocks 25 are installed on both sides of the outer wall of the right side of the movable plate 6. The handle 9 is located between the two limiting blocks 25 and can be constrained by the left and right limiting blocks 25 to rotate. The movable plate 6 has a built-in trigger spring 26.
[0029] The specific implementation method of this utility model is as follows:
[0030] In this utility model, the safety clamp triggering structure is formed by a combination of a progressive safety clamp 11, an automatic triggering mode, and a manual triggering mode. The automatic triggering mode and the manual triggering mode can work together. The automatic triggering structure is completed by the cooperation of a moving plate 6, a triggering spring 26, an upper guide wheel assembly 4, a long steel wire rope 23, a short steel wire rope 14, a guide wheel 15, a steel wire rope clamp 24, a limit plate 16, a reset spring 17, a counterweight block 18, and the progressive safety clamp 11. When the progressive safety clamp 11 descends rapidly with the elevator safety platform 1, the moving plate 6 is tightened by gravity on the long steel wire rope 23. The two sides of the long steel wire rope 23 are respectively fixed to two sets of short steel wire ropes 14 by the steel wire rope clamps 24. Together, the short steel wire rope 14 is wound around to the other side of the vertical beam 2 via the guide wheel 15. The end of the short steel wire rope 14 passes through the limiting plate 16, the return spring 17 and the counterweight 18 in sequence. The lower part of the progressive safety clamp 11 is subjected to a tension force from the tension spring 12. The progressive safety clamp 11 and the short steel wire rope 14 are connected through the safety clamp pull plate 13, which in turn drives the progressive safety clamp 11 to be triggered. When the progressive safety clamp 11 locks onto the guide rail, the safety platform 1 brakes and stops on the guide rail. In the manual trigger mode, the handle 9 is used to control the tension of the long steel wire rope 23, thereby controlling the triggering and unlocking of the progressive safety clamp 11. The operator can trigger or open it by himself, which makes the safety performance more comprehensive.
[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A safety gear triggering structure for an elevator comprising a safety platform (1), characterized in that: The bottom left and right sides of the safety platform (1) are connected with vertical upright beams (2), the middle section of the bottom of the safety platform (1) is connected with a horizontal cross beam (3), the bottom of the horizontal cross beam (3) is connected with an upper guide wheel assembly (4), the center of the bottom wall of the safety platform (1) is provided with a let-out opening (5), the let-out opening (5) is penetrated through with a moving plate (6), the top left side of the moving plate (6) is connected with a safety lock fixing plate (7), the top of the safety lock fixing plate (7) is connected with a safety lock (8), the outer wall of the safety lock (8) is connected with an electrical control box (10), the top right side of the moving plate (6) is mounted with a handle (9).
2. The safety gear trigger structure for an elevator according to claim 1, characterized by: The outer wall of the vertical upright beam (2) is mounted with a progressive safety clamp (11), the bottom of the progressive safety clamp (11) and the vertical upright beam (2) are connected with a tension spring (12), the free end of the progressive safety clamp (11) is connected with a safety clamp pull plate (13), the upper end of the safety clamp pull plate (13) is connected with a short steel wire rope (14), the short steel wire rope (14) is wound to the inner wall of the vertical upright beam (2) through a guide wheel (15).
3. The safety gear trigger structure for an elevator according to claim 2, characterized by: The inner wall of the vertical upright beam (2) is connected with a limiting plate (16) and a return spring (17), the end of the return spring (17) is connected with a counterweight block (18), the end of the short steel wire rope (14) is sequentially penetrated through the limiting plate (16), the return spring (17) and the counterweight block (18), the counterweight block (18) and the short steel wire rope (14) are fixed with a fastening bolt (19).
4. The safety gear trigger structure for an elevator according to claim 3, characterized by: The vertical upright beam (2) is provided with a long groove (20), the shaft sleeve (21) is slidingly installed in the long groove (20), and the shaft sleeve (21) is fixedly connected with the counterweight block (18).
5. The safety gear trigger structure for an elevator according to claim 2, characterized by: The outer wall of the handle (9) is connected with a rope buckle (22), the rope buckle (22) is penetrated through with a long steel wire rope (23), the long steel wire rope (23) penetrates through the gap of the upper guide wheel assembly (4), and the two ends of the long steel wire rope (23) are fixed with two groups of short steel wire ropes (14) through steel wire rope clamps (24).
6. The safety gear trigger structure for an elevator according to claim 1, characterized by: The outer walls of the right parts of the moving plate (6) are mounted with limiting blocks (25), the handle (9) is located between the two limiting blocks (25), and the moving plate (6) is built-in with a trigger spring (26).