CN-121977805-A - Buffer test method and device

CN121977805ACN 121977805 ACN121977805 ACN 121977805ACN-121977805-A

Abstract

The application discloses a buffer test method and a device, which relate to the technical field of elevator engineering, and the method is applied to the buffer test device and comprises the steps of statically compressing a buffer until the buffer is completely compressed, and acquiring completely compressed data; the method comprises the steps of carrying out cyclic compression on a buffer according to complete compression data to obtain cyclic compression data, carrying out impact test on the buffer according to the complete compression data to obtain impact data, and determining applicable data of the buffer according to the complete compression data, the cyclic compression data and the impact data. Through the mode, the buffer test performance and the corresponding applicable parameters are obtained by adopting the modes of complete compression, cyclic compression and impact test, so that the test can be effectively finished on the energy storage capacity and the nonlinear mechanical property of the buffer, and the reference and detection are provided for the application range of the buffer.

Inventors

CHEN GUIZHOU
QIU BIN
XIAO YITIAN
GEGEN TANA
PENG WANLI
WANG DONGLIANG

Assignees

深圳市特种设备安全检验研究院

Dates

Publication Date: 20260505
Application Date: 20260130

Claims (10)

1. A buffer test method, wherein the buffer test method is applied to a buffer test apparatus, the buffer test method comprising: static compressing a buffer until the buffer is fully compressed, and obtaining fully compressed data; According to the completely compressed data, circularly compressing the buffer to obtain circularly compressed data; according to the fully compressed data, performing an impact test on the buffer to obtain impact data; And determining the applicable data of the buffer according to the fully compressed data, the circularly compressed data and the impact data.
2. The buffer testing method of claim 1, wherein the acquiring fully compressed data comprises: acquiring a total compression amount of the buffer to be fully compressed and a required limit weight when the buffer is fully compressed; determining a rated speed range of the buffer according to the total compression amount; determining an allowable weight range of the buffer according to the limit weight; wherein the fully compressed data includes the total compression amount, the limit weight, the rated speed range, and the allowable weight range.
3. The buffer testing method of claim 2, wherein said determining a rated speed range of the buffer from the total compression amount comprises: according to the total compression amount, calculating and obtaining a first rated speed; in response to the first nominal speed being less than or equal to a nominal threshold, the nominal speed range is such that the applicable nominal speed is less than or equal to the first nominal speed, or, In response to the first nominal speed being greater than the nominal threshold, the nominal speed range is such that the applicable nominal speed is less than or equal to the nominal threshold.
4. A method of testing a bumper according to claim 3, wherein said determining an allowable weight range of said bumper based on said limit weight comprises: calculating and acquiring the minimum allowable weight according to the limit weight; calculating and acquiring the maximum allowable weight according to the limit weight; Wherein the allowable weight range is that the allowable weight is greater than or equal to the minimum allowable weight and less than or equal to the maximum allowable weight.
5. The buffer testing method of claim 2, wherein the cyclically compressing the buffer based on the fully compressed data to obtain cyclically compressed data comprises: static compressing said damper according to said limit weight until said damper is fully compressed; Repeating the steps and recording the cycle times; and when the cycle times reach the preset cycle times, ending the repeated steps and acquiring the cycle data of the buffer.
6. The buffer testing method of claim 4, wherein said performing an impact test on said buffer based on said fully compressed data to obtain impact data comprises: according to the rated speed range, obtaining the impact speed; repeatedly performing impact tests of a first preset impact frequency under preset conditions according to the maximum allowable weight and the impact speed; repeatedly performing impact tests of a second preset impact frequency under preset conditions according to the minimum allowable weight and the impact speed; and acquiring impact data of the buffer according to the impact test.
7. The buffer testing method of claim 6, wherein the preset conditions include: the maximum impact speed of the buffer at the moment of impact reaches the impact speed, and the maximum impact speed is not lower than a threshold speed; the acceleration of the buffer at the moment of being impacted is not lower than a threshold acceleration; Repeating the next impact test after finishing the impact test at intervals of a threshold time; The environmental temperature of the impact test is greater than a first preset temperature and less than a second preset temperature, and the second preset temperature is greater than the first preset temperature.
8. A buffer testing apparatus for performing the buffer testing method of any one of claims 1-7, the buffer testing apparatus comprising: A tower; the tested module comprises a buffer, the tested module is arranged in the internal accommodating space of the tower frame body, and the tested module is arranged at one side of the bottom of the tower frame body in the middle; The test module is arranged in the inner accommodating space of the tower frame body and is arranged on the tested module to be coupled with the tower; The test module is used for carrying out the static compression, the cyclic compression and the impact test on the buffer.
9. The buffer testing device of claim 8, wherein the module under test comprises: A mounting base; The clamp is arranged on the mounting base; the buffer is arranged on the mounting base and is fixed through the clamp; the collision plate is arranged on the buffer.
10. The buffer testing apparatus of claim 9, wherein the test module comprises: the suspension cage is arranged on the tested module and is coupled with the tower; The acceleration sensor is arranged in the suspension cage and is centered on one side close to the tested module; the guide rails are arranged on two opposite sides of the suspension cage and are coupled with the tower; The roller guide shoes are arranged on the guide rails and couple the suspension cages with the guide rails, and the suspension cages can move in the vertical direction through the guide rails and the roller guide shoes; The hoist is arranged on the suspension cage in the middle and is away from one side of the tested module; The unhooking device is coupled with the hoist and arranged on one side close to the tested module; The weight is arranged between the acceleration sensor and the unhooking device.

Description

Buffer test method and device Technical Field The application relates to the technical field of elevator engineering, in particular to a buffer test method and device. Background A truncated cone spiral spring is an important spring element, which is a spring formed by winding a plate material into a cone shape, and in the same space volume, the spring can absorb a larger amount of energy than other springs, and friction existing between the plates can be used for damping vibration. The common truncated cone spiral spring mainly comprises an equal-helix angle spiral spring, an equal-pitch spiral spring and an equal-stress spiral spring 3, wherein when the truncated cone spiral spring is compressed by external force, the large end spring is deformed firstly due to smaller rigidity, and then the large end spring does not participate in work after being fastened. With the increase of the deformation degree, the effective spring length participating in the deformation is smaller and smaller, the spring is harder when being pressed, the rigidity of the spring is changed all the time in the working process, and the spring can bear dynamic load or impact load and is often used as a heavy machinery vibration damper and also can be used as a buffer of a heavy-load freight elevator. When the truncated cone spiral spring buffer is used as an elevator buffer, the buffer is not only a metal spring, but also has nonlinear mechanical characteristics, and no special test method and test device are available in the elevator industry at present. The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present application and is not intended to represent an admission that the foregoing is prior art. Disclosure of Invention The application mainly aims to provide a buffer test method and device, and aims to solve the technical problem of performance test of a truncated cone spiral spring buffer at present. In order to achieve the above object, the present application provides a buffer test method applied to a buffer test apparatus, the buffer test method comprising statically compressing a buffer until the buffer is fully compressed, obtaining fully compressed data; the method comprises the steps of carrying out cyclic compression on a buffer according to complete compression data to obtain cyclic compression data, carrying out impact test on the buffer according to the complete compression data to obtain impact data, and determining applicable data of the buffer according to the complete compression data, the cyclic compression data and the impact data. In one embodiment, obtaining fully compressed data includes obtaining a total amount of compression of the buffer and a required limit weight of the buffer when fully compressed, determining a rated speed range of the buffer based on the total amount of compression, determining an allowable weight range of the buffer based on the limit weight, wherein the fully compressed data includes the total amount of compression, the limit weight, the rated speed range, and the allowable weight range. In one embodiment, determining the rated speed range of the buffer according to the total compression amount comprises calculating and obtaining a first rated speed according to the total compression amount, wherein the rated speed range is suitable for being smaller than or equal to the first rated speed when the first rated speed is smaller than or equal to a rated threshold value, or the rated speed range is suitable for being smaller than or equal to the rated threshold value when the first rated speed is larger than the rated threshold value. In one embodiment, the allowable weight range of the buffer is determined according to the limit weight, and the allowable weight range comprises the minimum allowable weight calculated and acquired according to the limit weight and the maximum allowable weight calculated and acquired according to the limit weight, wherein the allowable weight range is that the allowable weight is larger than or equal to the minimum allowable weight and smaller than or equal to the maximum allowable weight. In one embodiment, the method comprises the steps of performing cyclic compression on a buffer according to full compression data to obtain cyclic compression data, wherein the step of performing static compression on the buffer until the buffer is fully compressed according to limit weight, the step of repeating the steps and recording the cycle times, and the step of repeating the steps and obtaining the cyclic data of the buffer when the cycle times reach preset cycle times. In one embodiment, the buffer is subjected to impact testing according to the fully compressed data to obtain impact data, wherein the impact data comprises obtaining impact speed according to a rated speed range, repeatedly performing impact testing of a first preset impact frequency under preset conditions according to a maximum all