Progressive safety tongs capable of quickly consuming kinetic energy and potential energy of lift car

Abstract

The invention discloses progressive safety tongs capable of quickly consuming kinetic energy and potential energy of a lift car, and relates to the technical field of safety tongs, the progressive safety tongs comprise a tongs body shell, two sliding rails are fixedly mounted in the tongs body shell, a movable base is movably sleeved outside the tongs body shell, and a sliding seat is movably sleeved outside the sliding rails. According to the progressive safety tongs capable of quickly consuming the kinetic energy and the potential energy of the lift car, through cooperative use of the movable base, the connecting pile, the brake block and the ball, the progressive safety tongs capable of quickly consuming the kinetic energy and the potential energy of the lift car can be braked through the brake block; the movable base can drive the two brake blocks to move upwards through the connecting piles, the brake blocks can move along the guiding of the sliding grooves under the action of the sliding seats, then the two brake blocks get close to each other and extrude the guide rails, braking of the lift car is achieved, and when the sliding seats move along the sliding grooves, balls roll, so that the sliding seats move along the sliding grooves. And the friction between the sliding seat and the sliding chute is reduced.

Description

technical field [0001] The invention relates to the technical field of safety gear, in particular to a progressive safety gear that can quickly consume the kinetic energy and potential energy of a car. Background technique [0002] Elevator refers to a permanent transportation device that serves several specific floors in a building, and its car runs on at least two rows of rigid tracks perpendicular to the horizontal plane or with an inclination angle of less than 15° to the plumb line. There are also step type, the tread plate is installed on the crawler to run continuously, commonly known as escalator or moving walkway, which is a fixed lifting device serving a specified floor. Between the rigid guide rails of °, the safety gear is the safety protection device of the elevator. The elevator safety gear device is under the operation of the speed limiter. When the elevator speed exceeds the limit speed set by the elevator speed limiter, or the suspension rope breaks and In ...

AI Technical Summary

Problems solved by technology

[0003] When the safety gear is working, when the safety gear is started, the lever of the safety gear drives the wire rope of the speed limiter, and the friction force between the wire rope of the speed limiter and the wheel of the speed limiter is maintained by the tensioner wheel, so that the speed of the wheel of the speed limiter is the same as that of the car. Keep the running speed consistent. When the running speed of the car (safety gear, safety gear lever, speed limiter wire rope, speed limiter wheel) is ≥115% of the rated speed, the speed limiter will act, and the brake rope block will press the speed limiter wire rope. Make it stop, and drive the safety gear lever to make the safety gear move. The common safety gear relies solely on the extrusion friction between the speed limiter and the guide rail to limit the position of the car. There is still room for improvement in the average deceleration effect , it needs to consume the kinetic energy and potential energy of the car faster, and the speed limiter will generate high temperature during the rapid friction process. Once the temperature is too high, it will cause deformation of the speed limiter and affect the braking effect. Therefore, we design A progressive safety gear that can quickly consume the kinetic energy and potential energy of the car is proposed to solve the above problems

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