A detection method for elevator braking force and traction force
A detection method and technology of braking force, which is applied in the detection of traction force and the field of elevator braking force, can solve the problems of long time and low efficiency, and achieve the effect of high automation, high efficiency, saving manpower and time cost
Active Publication Date: 2022-07-08
四川省特种设备检验研究院
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Problems solved by technology
[0005] The purpose of the present invention is to provide a detection method for the braking force and traction force of an elevator, which can use the motor torque to simulate the load placed in the car to perform the braking force and traction force experiment, so as to solve the problems of long time, low efficiency and current replacement in standard detection. There are many limitations and shortcomings in the program
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[0028] In order to make the technical features and process features of the present invention easier to understand, the method of the present invention will be described in further detail below.
[0029] An electronic pressure sensor is placed at the bottom of the elevator shaft in advance. When the elevator is in an unloaded state, the elevator car and the counterweight are completely pressed on the pressure sensor to obtain the total pressure on the elevator car side and the counterweight side;
[0030] The number of wire ropes and the lift height of the car are obtained from the elevator nameplate or on-site measurement, and the weight of the fully oiled structural wire rope per unit length is used to calculate the weight of the compensation rope counterweight side, the car side weight, and the traction rope counterweight side and the car side. Weight, the weight of the car and counterweight is obtained according to the mathematical relationship between the components;
[00...
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The invention discloses a method for detecting the braking force and traction force of an elevator, comprising: measuring the total pressure of a car side and a counterweight side through a pressure sensor located on a buffer; calculating the weight of each part of a traction rope; The total output power and torque; according to the torque and total power calculated in the previous step; use the motor to simulate the load that should be installed in the car, complete the braking force experiment, and judge whether the braking force is qualified; carry out the no-load upward experiment, Use Euler's formula to judge whether the traction force is qualified. The braking force and traction force detection method proposed by the present invention does not need to place additional 125% rated load weights, saves manpower and time costs, has high efficiency, and can select different types of detection standards according to different brake types, adapting to different elevators Type, after the elevator characteristic parameters are input, the detection process can be directly completed without manual participation, and the braking force qualification result can be obtained, which has the characteristics of automation and convenient operation.
Description
technical field [0001] The invention relates to an elevator detection method, in particular to a detection method of elevator braking force and traction force. Background technique [0002] The brake is an important equipment for the safety of elevator equipment. When the elevator is running normally, such as when the internal detection of the system or the external safety circuit fails, such as a temporary power failure, the brake will brake to prevent the car from sliding and causing safety accidents. However, accidents such as sudden falling of the car, top-jumping and door-opening shearing occur every year. Except for a few uncontrollable factors caused by various coincidences, the vast majority of elevator accidents are caused by the inability of the brakes to generate enough force. Caused by braking force or wire rope slippage. [0003] Although GB7588-2003 stipulates that when the car is loaded with 125% of the rated load and runs downward at the rated speed, operati...
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IPC IPC(8): B66B5/00B66B5/16
CPCB66B5/0031B66B5/16Y02B50/00
Inventor 於浩殷鹰韩震宇杜波刘成源
Owner 四川省特种设备检验研究院