CN-117049307-B - Vibration reduction and buffering elevator safety tongs based on metal rubber

CN117049307BCN 117049307 BCN117049307 BCN 117049307BCN-117049307-B

Abstract

The invention relates to a metal rubber-based vibration reduction buffer elevator safety tongs, which comprises a shell, wherein two symmetrical clamping plates are arranged in the shell, the side parts of the clamping plates are connected with pushing plates through vibration reduction buffer units of metal rubber, and the pushing plates on the two sides are driven by a cam transmission mechanism to move in parallel or away from each other. Compared with the traditional elevator safety tongs, the elevator safety tongs have the advantages that the used structure is a movement mode that the sliding block moves along the wedge-shaped block, the action is more intense in the initial stage of elevator stall, so that the elevator car can vibrate obviously, and the stability in the movement process is improved by using a cam transmission mode; the damping buffer unit adopting the metal rubber has larger damping characteristic, and can absorb energy through friction between the metal rubber, so that the damping effect of the damping device is greatly improved, the instability of contact between the clamping plate and the elevator guide rail is slowed down, and the elevator can stably run in the clamping process of the safety tongs.

Inventors

REN ZHIYING
YAN WEIDONG
HUANG WEI
SHEN LIANGLIANG
ZHU TIANQI

Assignees

福州大学

Dates

Publication Date: 20260512
Application Date: 20230830

Claims (4)

1. The vibration damping buffer elevator safety tongs based on metal rubber is characterized by comprising a shell, wherein two symmetrical clamping plates are arranged in the shell, the side parts of the clamping plates are connected with pushing plates through vibration damping buffer units of the metal rubber, the pushing plates on the two sides are driven by a cam transmission mechanism to move close to or away from each other in a translation mode, the shell comprises a base, the front face of the base is fixedly provided with a supporting plate through a pin so as to form an installation cavity of a part in the base, the cam transmission mechanism comprises a rotating unit located beside each pushing plate, the rotating unit is installed on the inner side of the base and the supporting plate through a cam shaft and oil-free bushings, a pushing cam is fixed on the cam shaft through a fixing pin, a rotating shaft is fixed in the pushing cam through a threaded connection, a lifting rod located on the outer portion of the shell is fixed through a gasket and a nut, the rotating shaft can be driven to rotate along an abdication arc groove formed in the supporting plate when the lifting rod is lifted upwards, meanwhile, the rotating shaft is driven to rotate, one end of the pushing cam is connected with one end of the swinging rod through a retainer ring, the other end of the swinging rod is connected with the swinging rod through the pin, the swinging rod is installed inside a sliding block, the sliding motor is located inside the sliding motor, the sliding motor is located below the sliding motor, the sliding motor is installed on the sliding motor, the sliding motor is driven by the sliding motor to rotate, and the swinging motor is driven by the swinging motor to rotate on the driving motor, and the driving motor is further installed on the driving motor through the driving motor to rotate mounting plate.
2. The vibration reduction buffer elevator safety tongs based on metal rubber according to claim 1, wherein the pushing plate comprises a pushing plate I and a pushing plate II, the pushing cam is in contact with the pushing plate I, the pushing plate I is provided with a displacement sensor, the displacement sensor and the pushing plate II keep a certain installation distance, the pushing plate I and the vibration reduction buffer unit are connected through a bolt assembly, the middle is contacted through a metal rubber assembly, the metal rubber assembly is formed by closely arranging a plurality of metal rubber columns arranged vertically, and the metal rubber assembly is installed inside the vibration reduction buffer unit.
3. The damping buffer elevator safety tongs based on metal rubber as set forth in claim 2, wherein the first pushing plate is connected to the base through a first fixed spring screw pin, a first common spring and a second adjustable spring screw pin, the upper and lower ends of the second pushing plate and the first pushing plate in the damping buffer unit are provided with protrusions, the protrusions are embedded in grooves formed in the base and can slide horizontally along the grooves, the second pushing plate is connected with the second oilless bushing and the clamping plate through a connecting component, the clamping plate can rotate by a certain amplitude, a dead gear is mounted on the clamping plate and can limit the rotation amplitude range of the clamping plate, a second fixed spring screw pin, a second common spring and a second adjustable spring screw pin are further mounted between the clamping plate and the second pushing plate, an electromagnet is mounted in the middle of the clamping plate, the electromagnet can change magnetic force by controlling the current, and an acceleration sensor is mounted on the side of the base and used for detecting the acceleration change condition of a car and providing a detection signal.
4. The vibration reduction buffer elevator safety tongs based on metal rubber according to claim 2, wherein the cross section of the metal rubber column is a right triangle with two right-angle sides being equal, the side edges of two adjacent metal rubber columns are tightly attached together, and the metal rubber component is formed by combining the metal rubber columns into a square shape with the cross section profile and is arranged in the second propelling plate.

Description

Vibration reduction and buffering elevator safety tongs based on metal rubber Technical Field The invention relates to a vibration damping buffer elevator safety clamp based on metal rubber, and relates to the field of elevator safety braking vibration damping buffer. Background The elevator safety tongs are an indispensable component in the elevator industry as a safety protection device. In order to ensure the safety performance of an elevator, it is widely used in elevators. The elevator car locking device has the functions of rapidly locking the elevator car when an accident happens to the elevator, preventing the car from freely falling, and ensuring the personal safety of passengers. However, since the elevator car is raised at a high speed or suddenly lowered, jolt, sway or the like occurs, which affects the physical and mental health of elevator passengers and damages the structure and equipment of the elevator. The conventional safety tongs device usually adopts a sliding block to move along a wedge block so as to squeeze a guide rail to brake, and most of used buffer units are disc springs or U-shaped springs. The requirement on the matching precision of the belleville spring set and the mandrel is high, the parameters are unstable, the repeatability and the stability are poor, the U-shaped spring is large in volume and rigidity, and the buffering effect is general. Therefore, the vibration reduction effect of the materials is not ideal, and jolt and shake of an elevator cannot be effectively reduced. In addition, the prior safety tongs patent technology is often provided with buffer springs or supporting plates to improve the buffer capacity in the aspect of vibration reduction and buffer, and the transmission mode and the contact mode are not changed greatly with the traditional safety tongs, so that the problems of large contact instant impact force, high instability and the like exist, and the problems of jolt, shake and the like caused by emergency braking when an elevator is in accident can not be effectively solved. Therefore, the vibration reduction and buffering elevator safety tongs based on the metal rubber mainly solve the problem of the traditional elevator safety tongs in vibration reduction and buffering. The metal rubber material has good elasticity and heat resistance, and can be applied to a vibration reduction buffer device of an elevator safety tongs, has the advantages of good vibration reduction effect, strong durability, safety, reliability and the like, can more effectively absorb and dissipate impact and vibration energy generated in the elevator braking process, and improves the running stability and safety of the elevator. Disclosure of Invention In view of the defects of the prior art, the technical problem to be solved by the invention is to provide a vibration reduction buffer elevator safety tongs based on metal rubber. In order to solve the technical problems, the technical scheme is that the damping buffer elevator safety tongs based on the metal rubber comprises a shell, two symmetrical clamping plates are arranged in the shell, the side parts of the clamping plates are connected with pushing plates through damping buffer units of the metal rubber, and the pushing plates on the two sides are driven by a cam transmission mechanism to move in parallel or away from each other. Preferably, the housing includes a base, and a support plate is fixed to a front surface of the base via pins to form a mounting chamber of the component inside the base. Preferably, the cam transmission mechanism comprises a rotating unit located beside each pushing plate, the rotating unit is installed on the inner side of the base and the supporting plate through a cam shaft and oil-free bushings, pushing cams are fixed on the cam shaft through fixing pins, rotating shafts are fixed in the pushing cams through threaded connection, lifting rods located outside the shell are fixed on the rotating shafts through washers and nuts, and the rotating shafts can be driven to rotate along yielding arc-shaped grooves formed in the supporting plate when the lifting rods are lifted upwards, and meanwhile the pushing cams are driven to rotate. Preferably, the rotation shaft is connected with one end of the swing rod, the swing rod is limited by a check ring for the shaft, the other end of the swing rod is connected with a rolling wheel, the rolling wheel is installed inside a sliding block, the sliding block vertically slides along a guide rod installed inside the shell, the sliding block is pushed by a rotating cam, the rotating cam is installed on an output shaft of a driving motor, the driving motor is installed on a motor installation plate, the motor installation plate is installed on a base, the driving motor drives the rotating cam to rotate, and the swing rod is further driven to rotate to drive the pushing cam to rotate. Preferably, the propulsion plate comprises a propulsion plate I and a propu