Evaluation system and method for elevator brake static braking performance

An elevator brake and evaluation system technology, applied in elevators, transportation and packaging, etc., can solve the problems of not being able to obtain quantitative data of brakes, time-consuming and laborious, and difficult to implement, so as to achieve rapid quantitative and high-precision detection on site and improve inspection and detection. Efficiency, reduce the effect of handling work

Active Publication Date: 2020-04-24
GUANGDONG INSPECTION & RES INST OF SPECIAL EQUIP ZHUHAI INSPECTION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly the following problems in the detection of the braking performance of elevator brakes: for the detection of multiple elevators of the same type in a certain area, each time an elevator is detected, it is necessary to carry a weight, and the detection method of frequently carrying weights is time-consuming and laborious Inconvenient; there is a certain deviation between the assumed conditions calculated by the braking distance reverse braking force method and the actual situation, resulting in the calculation error of the braking force; the method of testing the braking force through the torque wrench is only for the test of the static braking force, but the detection accuracy is low , and limited by the size of the machine room, it is sometimes difficult to implement; the method of unilaterally releasing the brake to test the braking performance of the other side to see whether the brake wheel can be reliably braked is a qualitative test, and the actual quantitative data of the brake cannot be obtained

Method used

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  • Evaluation system and method for elevator brake static braking performance
  • Evaluation system and method for elevator brake static braking performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: figure 1 For the structural schematic diagram of the evaluation system of the present invention, refer to figure 1 As shown, the elevator brake static braking performance evaluation system of the present invention mainly includes: a variable frequency drive device, a reflective photoelectric switch, a control device and an elevator system.

[0029] The elevator system also includes: a machine room power supply, a car, an elevator motor, a deceleration device, a traction wheel and a brake, wherein the machine room power supply is connected with the variable frequency drive device for power supply; one end of the elevator motor is connected to The variable frequency drive device is connected, the other end of the elevator motor is connected to the traction sheave through the deceleration device, and the brake is used to brake the traction sheave. Preferably, the brake is preferably brake pads. It can be understood that the braking principle of the elevator sy...

Embodiment 2

[0031] Example 2: figure 2 For the flow chart of the evaluation method of the present invention, refer to figure 2 As shown, the evaluation method of the elevator brake static braking performance evaluation system of the present invention mainly includes the following steps:

[0032] S1: set the drive current threshold A that the variable frequency drive device makes the traction wheel overcome the braking force of the brake and just start to rotate;

[0033] S2: For an elevator to be tested (the elevator is required to be the same model as the sample elevator, with the same rated load, balance factor, and the same type of traction machine and brake), disconnect the elevator motor from the power system of the elevator to be tested, Connect the variable frequency drive device to the traction sheave of the elevator to be tested through the elevator motor and deceleration device;

[0034] S3: Control the variable frequency driving device to apply driving current to make the c...

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Abstract

The invention relates to an evaluation system and method for elevator brake static braking performance. The evaluation system includes a variable frequency drive device, a reflective photoelectric switch and a control device, wherein the variable frequency drive device is connected to the control device and an elevator system for applying a driving current to control a traction sheave of the elevator system to apply driving torque to a brake of the elevator system; and the reflective photoelectric switch is connected to a reflector arranged on the traction sheave and the control device for detecting rotation of the traction sheave. The system only needs to carry the weight once to complete detection of braking force of multiple elevators with the same type, greatly reduces transportation work before detection, saves time and effort, realizes rapid quantitative high-precision detection on site, improves efficiency of inspection and detection, and solves industry difficult problems in the field.

Description

technical field [0001] The invention belongs to the technical field of elevator detection, and in particular relates to a static braking performance evaluation system and method of an elevator brake. Background technique [0002] The brake is one of the important safety components to ensure the normal operation of the elevator and its frequent movements. Whether the elevator can run safely is closely related to the working condition of the brake. A large number of accident cases show that one of the main reasons for elevator personal casualties is improper setting of the brake braking force, which leads to serious accidents such as shearing, topping, squatting, sliding, out of control at the landing, and impact of the elevator. However, compared with elevator safety components such as door locks and safety gears, the design and inspection regulations for brakes in standard specifications are not comprehensive and detailed enough. The unexpected movement of the car due to in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/00
CPCB66B5/0093B66B5/0037Y02B50/00
Inventor 苏宇航梁敏健林晓明陈建勋戚政武杨宁祥
Owner GUANGDONG INSPECTION & RES INST OF SPECIAL EQUIP ZHUHAI INSPECTION INST
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