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Method for detecting elevator balance coefficient

A technology of balance coefficient and detection method, which is applied in elevators, transportation and packaging, etc., can solve the problems of time-consuming and labor-intensive detection method of elevator balance coefficient, limited popularization and application, and unsatisfactory detection accuracy, and achieves convenient and fast on-site installation and accurate test results Effect

Inactive Publication Date: 2012-09-19
TIANJIN HAOYA SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the time-consuming and labor-intensive detection method of the above-mentioned elevator balance coefficient, the no-load balance coefficient test technology has emerged in recent years, and some research results have been obtained. The method of balance coefficient, the static weight difference measurement method on both sides developed by Liaoning Petrochemical University, the balance coefficient detection method of ADIASYSTEM elevator detection system of German TUV company, etc.
Since the no-load test is adopted, the link of repeatedly handling weights is omitted. At present, the existing problem is that the test data is the static working condition data of the elevator, which is different from the dynamic test data adopted by the current elevator inspection rules. The installation of its test device is not convenient, etc., which limits the popularization and application
This detection method does not fully consider the influence of transmission efficiency on the detection results
The second is the detection of the motor torque, which is proposed to be "completely realized through the motor torque detection function of the inverter", and the detection accuracy cannot meet the requirements of GB / T10059-2009 "Elevator Test Method"

Method used

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  • Method for detecting elevator balance coefficient
  • Method for detecting elevator balance coefficient
  • Method for detecting elevator balance coefficient

Examples

Experimental program
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Effect test

Embodiment 1

[0051] Elevator parameters: rated load Q=1600kg, rated speed V=3m / s, lifting height H=56m, 18 floors and 18 stations, wire rope traction ratio i=2, permanent magnet synchronous traction machine.

[0052] Detection method:

[0053] a) Connect the AC broadband power measuring device to the power line of the traction motor through the clamp-type current sensor and the voltage input terminal to collect information on the operating power of the traction motor; place the photoelectric displacement measuring device on the traction wire rope to Collect information on the speed and travel of the elevator car.

[0054] b) With the elevator running back and forth from the bottom floor to the top floor under the no-load condition, select the test data corresponding to the moment when the elevator car runs to the 1 / 2 position of the lifting height, respectively: N x =25102W, N s =16288W, V x =2.886m / s, V s =2.889m / s.

[0055] c) Apply formula (1) and formula (2) to calculate, k=0.457...

Embodiment 2

[0058] Elevator parameters: rated load Q=2000kg, rated speed V=1m / s, lifting height H=26m, 8 floors and 8 stations, wire rope traction ratio i=1, worm gear traction machine model MT180, speed ratio I =50:2, the drag mode is AC-2, and the motor power is 22kW.

[0059] Detection method:

[0060] a) First of all, establish a database of the no-load down transmission efficiency of worm gear elevators with commonly used spleens / specifications. The method is to select a sample elevator, determine the balance coefficient value according to the method specified in GB / T10059-2009, and substitute it into formula (1) to calculate η value. The following table is part of the database:

[0061] Elevator no-load descending η data sheet using worm gear traction machine

[0062]

[0063] b) Collect the running power information of the traction motor through the power measuring device; collect the running speed and stroke information of the elevator car through the photoelectric displace...

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Abstract

The invention relates to a method for detecting an elevator balance coefficient. The value of a balance coefficient is obtained by computation by detecting no-load uplink power Ns, downlink power Nx, uplink speed Vs and downlink speed Vx of an elevator and applying the detection data and a database on the basis of the operation principle of a draw type elevator and an energy transmission relationship in operation. In the detection, the elevator is not loaded; the site installation of a testing device is convenient and quick; the site work time is generally 10 minutes approximately, thus saving the time and the labor; and a detection result is consistent with a testing value according to an elevator inspection rule.

Description

technical field [0001] The invention relates to a detection method of an elevator balance coefficient, more specifically, it relates to a method for calculating the elevator balance coefficient by testing the running power and running speed of a traction elevator. Background technique [0002] The national standard BG7588-2003 defines the balance factor as: "The balance factor, that is, the amount of rated load and car quality balanced by counterweight or balance weight." [0003] The current elevator technical standards and elevator inspection rules adopt the following test methods: the car is loaded with 30%, 40%, 45%, 50%, and 60% of the rated load for the whole journey up and down, when the car and the counterweight run When reaching the same horizontal position, record the current value of the motor, draw the current-load curve, and determine the balance coefficient at the intersection of the upper and lower operating curves. [0004] The above-mentioned detection meth...

Claims

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Application Information

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IPC IPC(8): B66B5/00
Inventor 刘培
Owner TIANJIN HAOYA SCI & TECH DEV