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Elevator brake system

An elevator braking and elevator technology, which is applied in the field of elevators, can solve problems such as reducing the running speed, poor elevator braking effect, and changes in the center of gravity of the car

Active Publication Date: 2017-07-14
HITACHI ELEVATOR CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The brake device reduces the running speed of the elevator by clamping the guide rail and rubbing against the guide rail. However, when the weight of the car changes, for example: when the position of the people in the car changes greatly, it will cause The center of gravity of the car changes, causing the elevator to not gradually reduce the running speed according to the preset acceleration, that is, the braking effect of the elevator is poor

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 4

[0067] In the fourth embodiment, the braking operation is performed first with the auxiliary braking device with a larger friction coefficient, and then the braking operation is performed with the auxiliary braking device with a smaller friction coefficient, so that the running acceleration of the elevator can gradually approach the preset acceleration , The braking effect of the elevator is better.

[0068] Such as Figure 5 as shown, Figure 5 A schematic diagram of the braking process of the elevator braking system described in Embodiment 5 of the present invention is shown. Embodiment 5 differs from Embodiment 1 in that the auxiliary braking device includes n auxiliary braking devices, and the coefficient of friction of the i-th auxiliary braking device is μ i , i is a natural number between 1 and n, where μ 1 to μ n From large to small gradually according to preset rules, when the program is executed by the processor, the following specific steps can be realized:

[...

Embodiment 5

[0079] In the fifth embodiment, the corresponding friction coefficient value is determined according to the motion parameters, so that the running acceleration of the elevator can reach the preset acceleration relatively quickly, and the braking effect of the elevator is better.

[0080] In Embodiment 4 and Embodiment 5, the friction coefficient of the braking device is μ, and the friction coefficient of the i-th auxiliary braking device is μ i =n-i+1 / nμ. So, μ 1 to μ n It is an arithmetic sequence, which is convenient for the controller to select a suitable friction coefficient for starting the auxiliary braking device.

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Abstract

The invention relates to an elevator brake system. The elevator brake system comprises a brake device, an auxiliary brake device and a controller, wherein the brake device and the auxiliary brake device are arranged on a lift car and used for performing brake operation on an elevator; the controller comprises a storage and a processor; programs in the storage are executed by the processor through steps as follows: when the brake device performs the brake operation on the elevator for a first preset time, information of at least one first motion parameter of running speed, acceleration and displacement of the lift car is acquired; whether the first motion parameter meets a first preset requirement is judged, if the first motion parameter does not meet the first preset requirement, the auxiliary brake device is started to perform brake operation on the elevator. According to the elevator brake system, the auxiliary brake device further performs brake operation on the elevator, so that the elevator is enabled to decelerate according to the preset requirement, a better brake effect can be obtained, and running safety of the elevator is improved.

Description

technical field [0001] The invention relates to the technical field of elevators, in particular to an elevator braking system. Background technique [0002] Braking devices are provided in traditional elevators. The braking device is used to start the braking operation of the elevator when it is judged that the running speed of the elevator reaches the preset action speed, so as to reduce the running speed of the elevator and make the elevator run at the prescribed preset speed to avoid dangerous accidents occur. Among them, in order to ensure the safety of the elevator during the braking operation of the braking device, the elevator should gradually reduce its running speed to a complete stop with the preset acceleration under the braking action of the braking device, and the average deceleration value should be 0.2g Between ~1.0g, the braking operation method of directly braking and stopping the elevator in a short period of time cannot be adopted. The brake device redu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/02B66B5/06
CPCB66B5/02B66B5/06
Inventor 王亮张景乐聂励鹏
Owner HITACHI ELEVATOR CHINA