A synchronous linkage mechanism for multiple sets of safety clamps

Abstract

The utility model relates to a synchronous linkage mechanism of multiple sets of safety clamps, which is installed on a car or a counterweight, and includes a speed limiter, at least two safety clamp assemblies and a transmission connection structure. The two safety clamp assemblies are installed at the upper and lower ends of the car, the speed limiter is installed on the car, and the two safety clamp assemblies are respectively connected to the two ends of the transmission connection structure. The speed limiter is provided with a lifting arm, and one of the safety clamp assemblies is connected to the lifting arm. In the synchronous linkage mechanism of the multiple sets of safety clamps, when the speed limiter is actuated, the lifting arm is driven, thereby driving the first active safety clamp to actuate, and driving the second active safety clamp to actuate synchronously through the transmission connection structure. At this time, the first passive safety clamp and the second passive safety clamp are also driven synchronously through the safety clamp connection structure, thereby achieving the purpose of synchronous action of multiple safety clamps, and adjusting the total length of the transmission connection rod through the adjusting member to adjust the synchronization of the second safety clamp assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a synchronous linkage mechanism of multiple sets of safety clamps. Background Art

[0002] An elevator is a vertical lift powered by an electric motor and equipped with a box-shaped cabin, used in multi-story buildings to carry people or goods; among them, the elevator car frame is one of the main components of the elevator, and the car frame is composed of the upper and lower beam components of the car frame.

[0003] The elevator safety clamp device is a safety device that stops the car urgently and clamps the clamp block on the guide rail when the elevator has a very serious fault such as overspeed or rope breakage under the control of the speed limiter. It provides effective protection for the safe operation of the elevator, and the lifting mechanism is a bridge connecting the speed limiter and the safety clamp. The main action of the lifting mechanism is: through the action of the speed limiter, the rope clamp clamps the limiter rope. As the car moves downward, the speed limiter rope lifts the safety clamp linkage mechanism, causing the safety clamp linkage mechanism to move, and the lifting rod is pulled up through the lifting mechanism, causing the safety clamp block to slide upward in its clamp seat. When the clamp block contacts the guide rail, friction is generated, driving the safety clamp brake element to contact the guide rail, so that the safety clamp is clamped on the guide rail at the same time to stop the car.

[0004] As the market demand for freight elevator load continues to increase, the system quality that a single set of safety clamps on the market can provide is limited and cannot meet the design requirements. At present, elevator manufacturers generally adopt the solution of multiple sets of safety clamps linked and synchronized, and meet the design requirements by superimposing the quality of multiple sets of safety clamps. The application scenario of the vertical synchronous linkage mechanism of multiple sets of safety clamps is that there are only two rows of guide rails in the car or counterweight assembly, such as the counterweight assembly of large-tonnage freight elevators. When a single set of safety clamps with corresponding applicable quality cannot be found on the market, this structure can be used to arrange the safety clamps to meet the applicable quality requirements of the safety clamps. Utility Model Content

[0005] The main purpose of the utility model is to provide a synchronous linkage mechanism for multiple sets of safety clamps to solve the above technical problems, thereby achieving synchronous action of multiple safety clamps.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A synchronous linkage mechanism of multiple sets of safety clamps is installed on a car or a counterweight, comprising a speed limiter, at least two safety clamp assemblies and a transmission connection structure, wherein the two safety clamp assemblies are installed at the upper and lower ends of the car, the speed limiter is installed on the car, the two safety clamp assemblies are respectively connected to the two ends of the transmission connection structure, and a lifting arm is provided on the speed limiter, and one safety clamp assembly is connected to the lifting arm.

[0008] As a preferred technical solution, the safety clamp assembly includes a safety clamp connection structure, an active safety clamp and a passive safety clamp, the active safety clamp is connected to the lifting arm and the transmission connection structure, and the active safety clamp is connected to the passive safety clamp via the safety clamp connection structure.

[0009] As a preferred technical solution, the safety clamp connection structure includes a connecting rod, an adjusting rod, a spring, a spring adjusting seat, a spring fixing seat, a connecting nut and a connecting piece. One end of the connecting rod is connected to the end of the adjusting rod through the connecting piece. The spring fixing seat is fixed on the car. One end of the spring abuts against the spring adjusting seat, and the other end abuts against the spring fixing seat. The connecting nut is threadedly connected to the connecting rod and abuts against the spring adjusting seat.

[0010] As a preferred technical solution, the transmission connection structure includes a connecting rod, a connecting plate and an adjusting member, one end of the two connecting rods are respectively installed on the two ends of the adjusting member, and the other ends are respectively fixed to the connecting plates, and the two connecting plates are respectively connected to the two safety clamp assemblies.

[0011] As a preferred technical solution, the adjusting member includes an adjusting seat and an adjusting nut, the adjusting seat is provided with a fixing seat for the connecting rod to pass through, the adjusting nut is threadedly connected to the connecting rod, and the adjusting nut abuts against the fixing seat.

[0012] The beneficial effects of the utility model are as follows: in the synchronous linkage mechanism of the above-mentioned multiple sets of safety clamps, when the speed limiter is actuated, the lifting arm is driven, thereby driving the first active safety clamp to actuate, and driving the second active safety clamp to actuate synchronously through the transmission connection structure, at this time, the first passive safety clamp and the second passive safety clamp are also driven synchronously through the safety clamp connection structure, thereby achieving the purpose of synchronous action of multiple safety clamps; the total length of the transmission connecting rod is adjusted by the adjusting member, thereby adjusting the synchronization of the second safety clamp assembly, and the linkage of multiple safety clamp assemblies can be achieved by setting the transmission connection structure, and the splicing connection of multiple safety clamp assemblies can be achieved; during the action of the lifting arm, the transmission of the linkage rod through the structure can achieve zero-angle rotation transmission, thereby ensuring the synchronization of the linkage mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the synchronous linkage mechanism of multiple sets of safety clamps involved in the utility model;

[0014] Figure 2 It is a structural schematic diagram of the transmission connection structure involved in the utility model. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0016] like Figure 1 As shown, a synchronous linkage mechanism of multiple sets of safety clamps is installed on the car a or the counterweight. In this embodiment, two safety clamp assemblies are provided, including a speed limiter (not shown in the figure), a first safety clamp assembly 1, a second safety clamp assembly 3 and a transmission connection structure 2. The first safety clamp assembly 1 and the second safety clamp assembly 3 are installed at the upper and lower ends of the car a. The speed limiter is installed on the car a. The first safety clamp assembly 1 and the second safety clamp assembly 3 are respectively connected to the two ends of the transmission connection structure 2. A lifting arm 4 is provided on the speed limiter, and the first safety clamp assembly 1 is connected to the lifting arm 4. When the speed limiter is driven to drive the lifting arm 4 to rotate, the first safety clamp assembly 1 is driven, and the second safety clamp assembly 3 is driven through the transmission connection structure 2.

[0017] The first safety clamp assembly 1 includes a first safety clamp connecting structure 12, a first active safety clamp 11 and a first passive safety clamp 13. The first active safety clamp 11 is connected to the lifting arm 4 and the transmission connecting structure 2. The first active safety clamp 11 is connected to the first passive safety clamp 13 via the first safety clamp connecting structure 12. The lifting arm 4 drives the first active safety clamp 11, and drives the first passive safety clamp 13 via the first safety clamp connecting structure 12.

[0018] The first safety clamp connection structure 12 includes a first connecting rod 121, a first adjusting rod 126, a first spring 122, a first spring adjusting seat 124, a first spring fixing seat 123, a first connecting nut 125 and a first connecting piece 127. One end of the first connecting rod 121 is connected to the end of the first adjusting rod 126 through the first connecting piece 127. The first spring fixing seat 123 is fixed on the car a. One end of the first spring 122 abuts against the first spring adjusting seat 124, and the other end abuts against the first spring fixing seat 123. A connecting nut 125 is threadedly connected to the first connecting rod 121 and abuts against the first spring adjustment seat 124. Adjusting the first connecting piece 127 can adjust the overall length of the first safety clamp connection structure 12, thereby ensuring that once the first active safety clamp 11 is actuated, the first passive safety clamp 13 can be driven through the first safety clamp connection structure 12 to compress the first spring 122. When the lifting arm 4 is reset, the first active safety clamp 11 is reset, the first spring 122 is reset, and the first passive safety clamp 13 is reset.

[0019] The second safety clamp assembly 3 includes a second safety clamp connection structure 32, a second active safety clamp 31 and a second passive safety clamp 33. The second active safety clamp 31 is connected to the transmission connection structure 2. The second active safety clamp 31 is connected to the second passive safety clamp 33 through the second safety clamp connection structure 32. The lifting arm 4 drives the second active safety clamp 31 through the transmission connection structure 2, and drives the second passive safety clamp 33 through the second safety clamp connection structure 32.

[0020] The second safety clamp connection structure 32 includes a second connecting rod 331, a second adjusting rod 326, a second spring 322, a second spring adjusting seat 324, a second spring fixing seat 323, a second connecting nut 325 and a second connecting piece 327. One end of the second connecting rod 331 is connected to the end of the second adjusting rod 326 through the second connecting piece 327. The second spring fixing seat 323 is fixed on the car a. One end of the second spring 322 abuts against the second spring adjusting seat 324, and the other end abuts against the second spring fixing seat 323. The second connecting nut 325 is connected to the second spring adjusting seat 324. 325 is threadedly connected to the second connecting rod 331 and abuts against the second spring adjustment seat 324. The second connecting piece 327 can adjust the overall length of the second safety clamp connection structure 32, thereby ensuring that once the second active safety clamp 31 is actuated, the second passive safety clamp 33 can be driven through the second safety clamp connection structure 32 to compress the second spring 322. When the lifting arm 4 is reset, the second active safety clamp 31 is reset through the transmission connection structure 2, so that the second spring 322 is reset, thereby driving the second passive safety clamp 33 to reset.

[0021] like Figure 2 As shown, the transmission connection structure 2 includes a first connecting rod 22, a first connecting plate 21, an adjusting member 23, a second connecting rod 24 and a second connecting plate 25. One end of the first connecting rod 22 and the second connecting rod 24 are respectively installed on the two ends of the adjusting member 23, the other end of the first connecting rod 22 is fixed to the first connecting plate 21, and the other end of the second connecting rod 24 is fixed to the second connecting plate 25. The first connecting plate 22 is hingedly connected to the first active safety clamp 11, and the second connecting plate 24 is hingedly connected to the second active safety clamp 31. The adjusting member 23 includes an adjusting seat 231 and an adjusting nut 233. The adjusting seat 231 is provided with a fixing seat 232 for the first connecting rod 22 and the second leveling rod 24 to pass through. The adjusting nut 233 is threadedly connected to the first connecting rod 22 and the second leveling rod 24, and the adjusting nut 233 is abutted against the fixing seat 232. The operating of the adjusting nut 233 can adjust the overall length of the transmission connection structure 2, thereby ensuring that once the first active safety clamp 11 is actuated, the second active safety clamp 11 can be driven through the transmission connection structure 2.

[0022] The above-described embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent application scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A synchronous linkage mechanism of multiple sets of safety clamps, installed on a car or a counterweight, characterized in that: It includes a speed limiter, at least two safety clamp assemblies and a transmission connection structure. The two safety clamp assemblies are installed at the upper and lower ends of the car. The speed limiter is installed on the car. The two safety clamp assemblies are respectively connected to the two ends of the transmission connection structure. A lifting arm is provided on the speed limiter, and one safety clamp assembly is connected to the lifting arm.

2. The synchronous linkage mechanism of multiple sets of safety gears according to claim 1, characterized in that: The safety clamp assembly includes a safety clamp connection structure, an active safety clamp and a passive safety clamp. The active safety clamp is connected to the lifting arm and the transmission connection structure. The active safety clamp is connected to the passive safety clamp via the safety clamp connection structure.

3. The synchronous linkage mechanism of multiple sets of safety gears according to claim 2, characterized in that: The safety clamp connection structure includes a connecting rod, an adjusting rod, a spring, a spring adjusting seat, a spring fixing seat, a connecting nut and a connecting piece. One end of the connecting rod is connected to the end of the adjusting rod through the connecting piece. The spring fixing seat is fixed on the car. One end of the spring abuts against the spring adjusting seat, and the other end abuts against the spring fixing seat. The connecting nut is threadedly connected to the connecting rod and abuts against the spring adjusting seat.

4. The synchronous linkage mechanism of multiple sets of safety gears according to claim 3, characterized in that: The transmission connection structure includes a connecting rod, a connecting plate and an adjusting member. One end of the two connecting rods is respectively installed on the two ends of the adjusting member, and the other end is respectively fixed to the connecting plates. The two connecting plates are respectively connected to the two safety clamp assemblies.

5. The synchronous linkage mechanism of multiple sets of safety gears according to claim 4, characterized in that: The adjusting member comprises an adjusting seat and an adjusting nut. The adjusting seat is provided with a fixing seat through which the connecting rod can pass. The adjusting nut is threadedly connected with the connecting rod, and the adjusting nut abuts against the fixing seat.

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