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Elevator traction capacity detection method

A technology of elevator traction and capacity, which is applied in the field of elevator traction capacity detection, and can solve problems such as difficult implementation of elevators and interference with normal operation

Active Publication Date: 2014-09-03
YUNGTAY ELEVATOR EQUIP CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution needs to fix the car and the traction rope on the counterweight side at the same time during the whole test process, which is difficult to achieve in the normal operation of the elevator
In addition, due to the need to set additional force sensors on the traction rope, the normal operation of the elevator in use may be disturbed

Method used

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  • Elevator traction capacity detection method
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  • Elevator traction capacity detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] figure 1 is a schematic diagram of the detection method of the present embodiment, figure 2 is the flow chart of the steps of the present embodiment, image 3 is a schematic diagram of torque application in this embodiment. according to figure 1 , figure 2 , image 3 , the specific implementation process of this embodiment is:

[0102] 1. Lift the empty car 10 to the highest floor station;

[0103] 2. Define the upward direction of the traction sheave 40 to lift the car 10 as the positive direction of torque, let τ max1-1 represents the friction torque boundary 1, and τ max1-1 =0,τ max1-2 represents the friction torque boundary II, and τ max1-2 =0, and set the critical value of traction machine lifting torque Among them, T 1-1 is the internal tension of the traction rope on the car side when the elevator is at the highest floor with no load, f 1 In order to use the reference friction coefficient μ according to the groove shape 1 (0.1≤μ 1 ≤0.2) The calcu...

Embodiment 2

[0119] figure 1 is a schematic diagram of the detection method of the present embodiment, Figure 4 is the flow chart of the steps of the present embodiment, Figure 5 is a schematic diagram of torque application in this embodiment. according to figure 1 , Figure 4 , Figure 5 , the specific implementation process of this embodiment is:

[0120] 1. Lift the empty car 10 to the highest floor station;

[0121] 2. Define the upward direction of the traction sheave 40 to lift the car 10 as the positive direction of torque, let τ max2 represents the friction torque, and τ max2 =0, and set the critical value of traction machine lifting torque Among them, T 1-2 is the internal tension of the traction rope on the car side when the elevator is at the highest floor with no load, f 2 In order to use the reference friction coefficient μ according to the groove shape 2 (0.1≤μ 2 ≤0.2) The calculated equivalent friction coefficient, α is the wrap angle of the traction rope;

...

Embodiment 3

[0133] Figure 6 is a schematic diagram of the detection method of the present embodiment, Figure 7 is the flow chart of the steps of the present embodiment, Figure 8 is a schematic diagram of torque application in this embodiment. according to Figure 6 , Figure 7 , Figure 8 , the specific implementation process of this embodiment is:

[0134] 1. Lower the empty car 10 to the lowest landing;

[0135] 2. Define the upward direction of the traction sheave 40 to lift the car 10 as the positive direction of torque, let τ max3-1 represents the friction torque boundary 1, and τ max3-1 =0, let τ max3-2 represents the friction torque boundary II, and τ max3-2 =0, and set the critical value of traction machine lifting torque Among them, T 2-3 is the internal tension of the traction rope 50 on the counterweight side when the elevator is at the lowest floor with no load, f 3 In order to use the reference friction coefficient μ according to the groove shape 3 (0.1≤μ 3 ...

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Abstract

The invention provides an elevator traction capacity detection method. The method includes the following steps of (1) lifting an empty elevator car to the highest station; (2) setting a lifting torque criminal value tup1-limit of a traction machine, making tmax1-1 equal to 0, and making tmax1-2 equal to 0; (3) setting a lifting height criminal value delta hup1-limit of the elevator car, (4) setting a maintaining torque ttest1-limit which is smaller than or equal to tup1-limit; (5) slowly lifting the elevator car; (6) carrying out the step (9) if the lifting height reaches the lifting height criminal value delta hup1-limit and if the lifting height does not reach the lifting height criminal value delta hup1-limit, maintaining the torque of the traction machine and detecting whether a traction rope slides relative to a traction wheel when the drive torque ttest1 is equal to ttest1-limit; (7) if the traction rope slides relative to the traction wheel, recording the torque, making tmax-1 equal to ttest1-limit and carrying out the step (9) and if the traction rope does not slide relative to the traction wheel, making tmax1-2 equal to ttest1-limit and carrying out the step (8); (8) if ttest1-limit is smaller than tup1-limit, increasing the lifting torque upper limit of a single test by a fixed value delta t1 and repeating the steps from the step (4) to the step (7), and if ttest1-limit is equal to tup1-limit, carrying out the step (9); (9) driving the elevator car to descend and reach the highest station again and braking to finish the test; (10) processing data obtained through detection.

Description

technical field [0001] The invention relates to the technical field of elevator detection, in particular to a method for detecting elevator traction capacity. Background technique [0002] Traction elevators generate traction through the friction between the traction sheave and the traction rope. The cross-sectional shape of the traction sheave groove and its surface roughness directly affect the equivalent friction coefficient between the traction sheave and the traction rope. This coefficient is an important parameter to evaluate whether the traction force of the elevator meets the standard. The groove of the traction sheave will be worn during the operation of the elevator, and with the continuous wear of the surface of the groove of the traction sheave, the shape and surface roughness of the groove will change, which will easily cause the gap between the traction sheave and the traction rope. The equivalent coefficient of friction decreases. In addition, due to the lea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/00
Inventor 邓奇杨亚军赵建兵邹志文刘礼陈建辉
Owner YUNGTAY ELEVATOR EQUIP CHINA
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