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CN-224226423-U - Synchronous lifting mechanism of six safety tongs

CN224226423UCN 224226423 UCN224226423 UCN 224226423UCN-224226423-U

Abstract

The utility model discloses a six safety tongs synchronous lifting mechanism which comprises a lower beam assembly, a safety tongs lifting support, safety tongs connecting screws, six safety tongs symmetrically arranged on two sides of the lower beam assembly, a first transverse pull rod connected with a short shaft, a second transverse pull rod connected with the upright, a return spring and a return spring, wherein the safety tongs lifting support, the safety tongs connecting screws are symmetrically arranged on two sides of the lower beam assembly, the first transverse pull rod is hinged with the safety tongs lifting support respectively, the short shaft is connected with the upright, the first transverse pull rod is connected with the second transverse pull rod, the second transverse pull rod is connected with the safety tongs lifting support through a first long connecting shaft and a second long connecting shaft, and the return spring is fixed between the first transverse pull rod and the positioning spring and is used for returning the safety tongs. The utility model solves the problems of poor synchronism and complex structure of the multi-safety tongs by the design of the double transverse pull rods, the coupling round tubes and the modularized lower beam assembly, is applicable to an elevator safety system, and has high reliability and easy maintenance.

Inventors

  • XIE WEI
  • HE QIDONG
  • JIANG HONGLIANG
  • HU AN

Assignees

  • 广东德力电梯部件有限公司

Dates

Publication Date
20260512
Application Date
20250604

Claims (8)

  1. 1. The six-safety-clamp synchronous lifting mechanism is characterized by comprising a lower beam assembly, wherein the lower beam assembly comprises a lower beam (1), an upright post (2), a short shaft (8), a positioning spring (7), a first transverse pull rod (43), a second transverse pull rod (44), a first long connecting shaft (59) and a second long connecting shaft (60), and the lower beam (1) is fixedly connected with the upright post (2); The safety gear lifting bracket (62), the safety gear connecting screw rod (65) and six safety gears (13) symmetrically arranged on two sides of the lower beam component are also included, each safety tongs (13) is hinged with a safety tongs lifting bracket (62) through a safety tongs connecting screw rod (65); The first tie rod (43) is connected with the short shaft (8), the short shaft (8) is connected with the upright (2), the first tie rod (43) is connected with the second tie rod (44), and the second tie rod (44) is connected with the safety tongs lifting bracket (62) through a first long connecting shaft (59) and a second long connecting shaft (60); The safety gear further comprises a return spring (47), wherein the return spring (47) is fixed between the first tie rod (43) and the positioning spring (7), and the return spring (47) is used for returning the safety gear (13); The speed limiter is characterized by further comprising a speed limiter steel wire rope (70), a first coupling round pipe (71) and a second coupling round pipe (73), wherein the speed limiter steel wire rope (70) is connected with the first coupling round pipe (71) and the second coupling round pipe (73) through steel wire rope handles (67) and used for driving the first transverse pull rod (43) and the second transverse pull rod (44) to synchronously move.
  2. 2. The six synchronous lifting mechanisms of the safety tongs are characterized in that the first long connecting shaft (59) and the second long connecting shaft (60) are fixed with the second coupling round pipe (73) through the first coupling round pipe (71), two ends of the first coupling round pipe (71) and two ends of the second coupling round pipe (73) are respectively connected with hexagonal nuts, and the first long connecting shaft (59) and the second long connecting shaft (60) are propped against each other through the hexagonal nuts.
  3. 3. Six safety gear synchronous lifting mechanism according to claim 1, characterized in that it further comprises a fixed bracket (45), the positioning spring (7) is arranged between the return spring (47) and the fixed bracket (45), and the positioning spring (7) is used for limiting the lateral displacement of the lower beam assembly.
  4. 4. The six-safety-clamp synchronous lifting mechanism according to claim 1, further comprising a connecting bracket (64) and an elevator guide rail (9), wherein the safety-clamp lifting bracket (62) is fixed with the elevator guide rail (9) through the connecting bracket (64), and the jaws of the safety clamps (13) symmetrically clamp the elevator guide rail (9).
  5. 5. Six synchronous lifting mechanisms of safety tongs according to claim 1 are characterized in that the return springs (47) are double helical springs symmetrically arranged between the first tie rod (43) and the positioning springs (7) and coaxial with the hinge point of the lifting bracket (62) of the safety tongs.
  6. 6. The six synchronous lifting mechanisms of the safety tongs are characterized in that anti-falling buckles are respectively arranged at two ends of the first long connecting shaft (59) and the second long connecting shaft (60), and the anti-falling buckles are used for ensuring stable connection of the first tie rod (43) and the second tie rod (44) with the lifting bracket (62) of the safety tongs.
  7. 7. The synchronous lifting mechanism for six safety gears according to claim 4, further comprising an elevator guide shoe (51), wherein the elevator guide shoe (51) is integrated at the bottom of the lower beam assembly, and the elevator guide shoe (51) is slidingly connected with the elevator guide rail (9) and provides vertical guide when the safety gears (13) act.
  8. 8. The six-safety-gear synchronous lifting mechanism according to claim 1, further comprising a deconcentrator, wherein one end of the deconcentrator is connected with a speed limiter wire rope (70), the other end of the deconcentrator is connected with a safety-gear lifting bracket (62), and the speed limiter wire rope (70) distributes pulling force to the six safety-gear lifting brackets (62) uniformly through the deconcentrator.

Description

Synchronous lifting mechanism of six safety tongs Technical Field The utility model belongs to the technical field of elevator safety devices, and particularly relates to a synchronous lifting mechanism of six safety tongs. Background The existing elevator safety tongs system mostly adopts a unilateral or bilateral safety tongs linkage structure, and a wire rope is triggered to lift the safety tongs through a speed limiter. However, such schemes have the disadvantages of 1. Insufficient synchronicity, namely, when the multiple safety tongs are pulled, the action of each safety tongs is out of sync due to overlong transmission links or gaps between parts, and the braking efficiency is reduced. 2. The structure is complex, the traditional mechanism depends on a plurality of independent connecting rods and springs, the installation and maintenance are difficult, and the failure is easy to be caused by the abrasion of parts. 3. The resetting is difficult, the safety tongs need to be manually reset after being braked, and the reset deviation can be caused by unreasonable arrangement of the reset springs. 4. The space occupation is large, the transverse occupation space of the existing lifting mechanism is large, and the existing lifting mechanism is difficult to adapt to a compact elevator shaft. The utility model provides a six-safety-clamp synchronous lifting mechanism by optimizing a transmission link and component layout so as to solve the problems. Disclosure of utility model Aiming at the problems of the background technology, the utility model aims to provide six synchronous lifting mechanisms of safety tongs, solves the problems of poor synchronism and complex structure of multiple safety tongs through the design of double transverse pull rods, a coupling round pipe and a modularized lower beam assembly, is applicable to an elevator safety system, and has high reliability and easy maintenance. In order to achieve the technical purpose, the utility model adopts the following technical scheme: The six safety tongs synchronous lifting mechanisms comprise a lower beam assembly, wherein the lower beam assembly comprises a lower beam, an upright post, a short shaft, a positioning spring, a first transverse pull rod, a second transverse pull rod, a first long connecting shaft and a second long connecting shaft, and the lower beam is fixedly connected with the upright post; also comprises a safety tongs lifting bracket, safety tongs connecting screws and six safety tongs symmetrically arranged at two sides of the lower beam component, each safety tongs are hinged with the safety tongs lifting bracket through safety tongs connecting screws; The first tie rod is connected with the short shaft, the short shaft is connected with the upright post, the first tie rod is connected with the second tie rod, and the second tie rod is connected with the safety tongs lifting bracket through a first long connecting shaft and a second long connecting shaft; The safety gear comprises a first transverse pull rod, a positioning spring, a return spring and a second transverse pull rod, wherein the first transverse pull rod is connected with the positioning spring through a connecting rod; The speed limiter is connected with the first coupling round tube and the second coupling round tube through the steel wire rope handle and used for driving the first tie rod and the second tie rod to synchronously move. Further limited, the first long connecting shaft and the second long connecting shaft are fixed with the second coupling circular tube through the first coupling circular tube, the two ends of the first coupling circular tube and the second coupling circular tube are respectively connected with hexagonal nuts, and the first long connecting shaft and the second long connecting shaft are tightly propped up through hexagonal screws. Further defined, the device further comprises a fixed bracket, wherein the positioning spring is arranged between the return spring and the fixed bracket and is used for limiting the transverse displacement of the lower beam assembly. Further defined, still include linking bridge and elevator guide rail, the safety tongs draws the support to be fixed with the elevator guide rail through the linking bridge, just the vice jaw symmetry centre gripping elevator guide rail of safety tongs. Further defined, the return spring is a double-coil spring, is symmetrically arranged between the first tie rod and the positioning spring, and is coaxial with the hinging point of the lifting bracket of the safety tongs. Further limited, the first long connecting shaft and the second long connecting shaft are respectively provided with an anti-falling buckle at two ends, and the anti-falling buckle is used for ensuring stable connection of the first tie rod, the second tie rod and the safety tongs lifting support. Further defined, there is also an elevator guide shoe integrated into the bottom of the lower beam assembly, t