Elevator rescue operation method

Abstract

The elevator rescue operation method comprises the following steps that S1, a short circuit device is operated, so that a three-phase outgoing line of a permanent magnet synchronous motor for driving an elevator to run is in short circuit; s2, a brake release mechanism of the brake is operated, so that the brake is changed into a brake release state from a band-type brake state; s3, after the elevator moves to the target floor, a brake releasing mechanism of the brake is operated, so that the brake is changed into a brake contracting state from a brake releasing state; and S4, the door opening mechanism is operated, so that the elevator door is opened. When rescue is carried out, the elevator can slowly move at a low speed, the elevator cannot be out of control and rapidly rushing to the top or squatting to the bottom, and the safety of passengers in the elevator car is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the elevator technical field, specifically relates to a kind of elevator rescue operation method. BACKGROUND

[0002] When elevator runs, if emergent elevator power failure or elevator control cabinet failure occurs, leading to passenger being trapped in car, rescue personnel often uses the following operation method to rescue: 1, brake is operated, brake is released, and elevator starts to move;2, after elevator moves to target floor, brake is operated, brake is caught, and elevator is stopped;3, elevator door is opened, and passenger is rescued.

[0003] This operation method has the following problems: 1, brake is operated, after brake is released, elevator moves fast, and speed and acceleration are large, which brings large impact to passenger trapped in car;2, after elevator moves to target floor, because speed is fast, when brake is caught to stop elevator, it also brings large impact to passenger trapped in car;3, after elevator moves to target floor, if brake failure occurs when brake is operated, brake cannot restore effective braking state, or brake torque generated by brake is insufficient, which will lead to elevator out of control, fast top or squat bottom, and bring large harm to passenger trapped in car. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a kind of rescue measures for elevator passenger to provide more safety.

[0005] To solve the above technical problem, the present application provides a kind of elevator rescue operation method, comprising the following steps:

[0006] Step S1, short-circuit device is operated, so that the three-phase lead-out line of permanent magnet synchronous motor driving elevator to run is short-circuited;

[0007] Step S2, brake release mechanism of brake is operated, so that brake changes from caught state to released state;

[0008] Step S3, when elevator moves to target floor, brake release mechanism of brake is operated, so that brake changes from released state to caught state;

[0009] Step S4, door opening mechanism is operated, so that elevator door is opened.

[0010] Preferably, in the step S2, the release mechanism is operated by manual mode, so that brake changes from caught state to released state, and remains in released state.

[0011] Preferably, in the step S3, the release force of release mechanism is removed by manual mode, so that brake changes from released state to caught state, and remains in caught state.

[0012] Preferably, the elevator car has a mass difference with the counterweight, and the elevator car is moved at a preset speed by the mass difference when the brake is kept in the released state.

[0013] Preferably, in the step S2, the operating disc turning device controls the elevator car to move in a preset direction after the brake becomes in the released state.

[0014] Preferably, the disc turning device is connected to a rotating part of the permanent magnet synchronous motor or connected to a mechanical part rigidly connected to the rotating part of the permanent magnet synchronous motor.

[0015] The elevator rescue operation method of the present application has the following beneficial effects:

[0016] 1) After the brake is released, the elevator moves at a very slow speed, greatly reducing the impact on the passengers in the trapped car;

[0017] 2) After the elevator moves to the target floor, since the moving speed is very slow, when the brake is stopped by the brake holding, the impact on the passengers in the trapped car can also be greatly reduced;

[0018] 3) After the elevator moves to the target floor, if the operation of the brake fails, the brake cannot recover to an effective braking state, or the brake torque generated by the brake is insufficient, the elevator can still move slowly at a low speed through the brake torque of the motor short circuit operation, so that the elevator will not lose control and quickly rush to the top or squat to the bottom, ensuring the safety of the passengers in the elevator car. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0020] Figure 1 The elevator rescue operation method step schematic diagram of Example 1. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be described below through specific embodiments, and those skilled in the art can fully understand other advantages and technical effects of the present application from the disclosure of the present application. The present application can also be implemented or applied through different specific embodiments, and each detail in the present application can be applied based on different viewpoints, and various modifications or changes can be made without departing from the general design idea of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. The following exemplary embodiments of the present application can be implemented in various forms, and should not be interpreted as being limited to the specific embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application complete and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art.

[0022] Example 1

[0023] like Figure 1 As shown, this embodiment provides an elevator rescue operation method, comprising the following steps:

[0024] Step S1, operating the short-circuiting device to short-circuit the three-phase lead wires of the permanent magnet synchronous motor that drives the elevator;

[0025] Step S2 operates the brake release mechanism, shifting the brake from the engaged state to the released state. The elevator car and the counterweight have a mass difference. When the brake remains in the released state, this mass difference causes the elevator car to move at a preset speed. Because the three-phase output wires of the permanent magnet synchronous motor are short-circuited, this preset speed is very low. The weight difference between the elevator car and the counterweight causes the elevator to move slowly at a relatively low speed.

[0026] Step S3: After the elevator reaches the target floor, the brake release mechanism is operated to change the brake from the released state to the engaged state and maintain the brake in the engaged state. The elevator stops moving and is in a stopped state.

[0027] Step S4: Operate the door opening mechanism to open the elevator door and rescue the passengers in the elevator car.

[0028] The elevator rescue operation method of this embodiment can reduce the impact on trapped passengers during the rescue process. In the process of releasing the manual release force to engage the brake, if the brake fails, such as the brake moving parts become stuck or stuck, the brake cannot be restored to an effective braking state, or the braking torque generated by the brake is insufficient, the braking torque of the motor can still be short-circuited to achieve slow movement of the elevator at a lower speed, which will prevent the elevator from losing control and quickly rushing to the top or bottom, thereby ensuring the safety of passengers in the elevator car.

[0029] Example 2

[0030] The difference between this embodiment and embodiment 1 is that, instead of utilizing the weight difference between the elevator car and the counterweight, in step S2, after the brake becomes released, the winch device is operated to control the elevator car to move in a preset direction.

[0031] The turning gear device is connected to the rotating part of the permanent magnet synchronous motor or is connected to a mechanical component rigidly connected to the rotating part of the permanent magnet synchronous motor.

[0032] The elevator rescue operation method of this embodiment is to implement a rescue operation through a winching device when a sudden elevator power outage or a failure of the elevator control cabinet occurs, and the weight of the elevator car and the passengers in the car is in balance with the weight of the counterweight, and the weight difference between the two cannot be used to move the elevator.

[0033] The application is described in detail above by specific embodiments and examples, but these do not constitute a limitation on the application. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the application, and these should also be considered as within the scope of protection of the application.

Claims

1. An elevator rescue operation method, characterized in that: The following steps are involved: Step S1, operating the short-circuiting device to short-circuit the three-phase lead wires of the permanent magnet synchronous motor that drives the elevator; Step S2, operating the brake release mechanism to change the brake from the engaged state to the released state; Step S3: When the elevator reaches the target floor, the brake release mechanism is operated to change the brake from the release state to the engagement state; Step S4: operate the door opening mechanism to open the elevator door.

2. An elevator rescue operation method according to claim 1, characterized in that: In step S2, the brake release mechanism is manually operated to change the brake from the engaged state to the released state and maintain the brake in the released state.

3. An elevator rescue operation method according to claim 2, characterized in that: In step S3, the release force of the release mechanism is manually released, so that the brake changes from the released state to the engaged state and remains in the engaged state.

4. An elevator rescue operation method according to claim 1, characterized in that: The elevator car and the counterweight have a mass difference, by which the elevator car is moved at a preset speed when the brake is held in a released state.

5. The elevator rescue operation method according to claim 1, characterized in that: In step S2, when the brake is released, the turning device is operated to control the elevator car to move in a preset direction.

6. An elevator rescue operation method according to claim 5, characterized in that: The barring device is connected to the rotating part of the permanent magnet synchronous motor or to a mechanical component rigidly connected to the rotating part of the permanent magnet synchronous motor.

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