Elevator safety clamp braking temperature rising measuring method

Abstract

The invention provides a method for measuring the brake temperature rise of elevator safety gear, which belongs to the technical field of elevator equipment detection. It solves the problem of low measurement accuracy of the braking temperature rise of the existing elevator safety caliper. The method for measuring the braking temperature rise of the elevator safety tongs comprises the following steps: A. setting up a plurality of gathering grooves inclined relative to the length direction of the tongs on the working surface of the safety tongs; B. embedding a temperature sensor in one of the gathering grooves, and Fix the heat-conducting silica gel at the notch position of the gathering groove; C, obtain the temperature rise value. The measurement accuracy of the elevator safety gear brake temperature rise measurement method is higher.

Description

technical field [0001] The invention belongs to the technical field of elevator equipment detection, and relates to a method for measuring the brake temperature rise of elevator safety gear. Background technique [0002] With the continuous extension of high-rise buildings to the sky, the running speed of elevators as a means of transportation is continuously increasing, and elevator accidents are inevitable. How to reduce or eliminate accidents and ensure the safe operation of elevators to the greatest extent has become a concern of the relevant national departments and the society. question. As one of the key components in the elevator mechanical protection link, the safety gear is the last barrier to prevent the elevator car from falling. For example, if the traction wire rope or suspension device breaks and the car falls freely, the safety gear must have sufficient friction. Stop the car on the guide rail to avoid accidents. During the braking and stopping process of t...

AI Technical Summary

Problems solved by technology

During the braking and stopping process of the progressive safety gear, the mechanical energy of the car and the load is mainly consumed by the friction between the clamp block and the guide rail, and most of the friction work generated by the contact and sliding between the clamp block and the guide rail is converted into heat energy, and the frictional heat will The temperature of the contact surface will increase, which will lead to changes in the mechanical properties of the contact materials, thereby changing the braking performance of the safety gear and causing accidents. At present, the safety gear test only includes mechanical performance tests such as deceleration, braking speed and braking distance. The measurement of the brake temperature rise of the clamp block is also based on Adams software for simulation analysis, lack of effective means of actual test measurement, and simply fix the temperature sensor on the outer surface of the safety gear clamp block, and then perform the car descent braking measurement, the measurement accuracy is also low

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