WO2020035083A1

WO2020035083A1 - Anti-elevator fall apparatus

Info

Publication number: WO2020035083A1
Application number: PCT/CN2019/110838
Authority: WO
Inventors: 王崇皓; 龚雨含; 孟令一; 王印会; 张舵
Original assignee: 华北理工大学
Priority date: 2018-08-13
Filing date: 2019-10-12
Publication date: 2020-02-20
Also published as: CN109052096A

Abstract

An anti-elevator fall apparatus, comprising at least two sets of buffer coils (2), a plurality of lasers (1), at least one laser detector, magnetic field generating coils (3) arranged at the top and bottom of every floor, a speed sensor, and an elevator fall power supply. The at least two sets of buffer coils (2) are arranged at the upper and lower ends and the middle of a car (5), the plurality of lasers (1) are mounted on an inside wall of an elevator shaft, the at least one laser detector is mounted on the car (5) and arranged relative to the lasers (1), the elevator fall power supply is electrically connected to the magnetic field generating coils (3) and the buffer coils (2), and the speed sensor is electrically connected to the laser detector and used for calculating the descent speed of the car (5). When the descent speed is greater than a maximum stable speed, the elevator fall power supply is turned on, and the magnetic field generating coils (3) generate an upward magnetic field which interacts with a downward magnetic field of the buffer coils (2), so as to decelerate the car (5). The anti-elevator fall apparatus effectively detects falling of the car (5), and executes the corresponding deceleration operation, thereby ensuring the safety of the car (5). The present invention has high practicality.

Description

Anti-slide device

Technical field

The invention relates to the field of elevator safety devices, in particular to an anti-slide device.

Background technique

With the rapid development of elevators, elevators have become popular, but elevator slides are still a more common problem. If they encounter elevator slides, they will pose a serious threat to the user's life. Although many elevators have now The braking device is installed on the elevator to prevent the event of falling down, but when the slide appears, the braking device will be locked immediately to brake, so that the elevator is always suspended, and the people in the elevator must wait for the maintenance personnel to repair or rescue personnel. Forced entry is required to come out. The electromagnetic anti-fall device provided by the present invention can immediately alarm when the elevator slides, use electromagnetic field to brake, and make the elevator reach the ground floor smoothly. An emergency switch is installed at the door opening on the ground floor, so that People in the elevator don't have to wait until rescuers can come out.

Summary of the Invention

In view of the above technical problems, the present invention provides an anti-slide device with a simple structure and convenient use, which can effectively detect a slide and execute a corresponding deceleration operation.

In order to solve the above technical problems, the technical solution adopted by the present invention is to provide an anti-slide device, which includes at least two sets of buffer coils, multiple lasers, at least one laser detector, and a magnetic field disposed on the top and bottom of each floor. Generate coils, speed sensors, and slide power. At least two sets of the buffer coils are arranged at the upper and lower ends and the middle of the car. A plurality of the lasers are evenly installed on the inner side wall of the elevator shaft. At least one of the laser detection A detector is installed on the car and is opposite to the laser, the slide power source is electrically connected to the magnetic field generating coil and the buffer coil, the speed sensor is electrically connected to the laser detector, It is used to calculate the descending speed of the car. When the descending speed is greater than the maximum stable speed, the power of the slide is started, the magnetic field generating coil generates an upward magnetic field, and interacts with the downward magnetic field of the buffer coil to realize Deceleration of the car.

The present invention adopts the above technical solutions, and achieves the technical effect that the anti-slide device provided by the present invention can effectively detect the descending speed of the car, and when the descending speed of the car is greater than the maximum stable speed, the power of the elevator is started, and The magnetic field generating coil generates an upward magnetic field and interacts with the downward magnetic field of the buffer coil to achieve deceleration of the car. The above anti-slide device has a simple structure and is convenient to use. It can effectively detect the slide and perform corresponding deceleration operations, and has high practicability.

Preferably, in the above technical solution, a laser ranging sensor and a controller are further included, the laser ranging sensor is installed at the bottom of the car, and is electrically connected with the speed sensor for calculating the car. The distance between the car and the bottom surface; the controller is electrically connected to the power supply of the slide, and when the distance between the car and the bottom surface is 0, the power supply of the slide is cut off.

Preferably, in the above technical solution, the arrangement interval of the lasers on the elevator shaft is 20 cm.

Preferably, in the above technical solution, the speed at which the car descends is calculated according to the time that the car passes between two adjacent lasers, where: v = 0.2 / t.

Preferably, in the above technical solution, the magnetic field generating coil is a spiral coil.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is further described below with reference to the drawings:

FIG. 1 is a schematic structural diagram of an anti-slide device provided by the present invention.

detailed description

As shown in FIG. 1, the anti-slide device provided by the present invention includes at least two sets of buffer coils 2, multiple lasers 1, at least one laser detector, magnetic field generating coils provided on the top and bottom of each floor, and speed sensing. And the slide power supply, at least two sets of the buffer coils 2 are disposed at the upper and lower ends and the middle of the car 5, a plurality of the lasers 1 are evenly installed on the inner side wall of the elevator shaft, and at least one of the laser detectors is installed The car 5 is arranged opposite to the laser 1, the slide power is electrically connected to the magnetic field generating coil 3 and the buffer coil 2, and the speed sensor is electrically connected to the laser detector. Connection for calculating the descending speed of the car 5, when the descending speed is greater than the maximum stable speed, starting the slide power, the magnetic field generating coil 3 generates an upward magnetic field, and the buffering coil 2 downwards The magnetic field interacts to achieve deceleration of the car 5.

As an implementable embodiment, the method further includes a laser ranging sensor 4 and a controller. The laser ranging sensor 4 is installed on the bottom of the car 5 and is electrically connected to the speed sensor for calculating the car. The distance between the car 5 and the bottom surface; the controller is electrically connected to the slide power source, and when the distance between the car 5 and the bottom surface is 0, the slide power is cut off. The laser ranging sensor 4 cooperates with the controller to effectively detect the distance between the car 5 and the bottom surface. When the distance between the car 5 and the bottom surface is 0, the power of the slide is cut off, the buffer coil 2 and the magnetic field generation coil The magnetic field of 3 disappears, and at this time, the speed of the car 5 becomes zero. The safety of the car 5 is further ensured.

As an implementable embodiment, an arrangement interval of the lasers 1 on the elevator shaft is 20 cm. The lasers 1 arranged at 20 cm intervals enable the laser detector to receive the laser signal more accurately, and the speed of the car 5 can be judged more accurately.

As an implementable manner, the speed at which the car 5 descends is calculated according to the time that the car 5 passes between two adjacent lasers 1, where: v = 0.2 / t. The descending speed of the car 5 can be calculated more accurately, so as to determine whether it is necessary to turn on the slide power.

As an implementable embodiment, the magnetic field generating coil 3 is a spiral coil. The generated magnetic field is more stable, the magnetic fields are superimposed on each other, the generated magnetic field is stronger, and the car 5 can be decelerated better.

The above embodiments are intended to illustrate that the present invention can be implemented or used by those skilled in the art. Modifications to the above embodiments will be apparent to those skilled in the art. Therefore, the present invention includes but is not limited to the above embodiments. Any method, process, or product that conforms to the claims or the description of the specification and conforms to the principles and novelty and creative features disclosed herein falls within the protection scope of the present invention.

Claims

An anti-slide device, comprising at least two sets of buffer coils (2), multiple lasers (1), at least one laser detector, magnetic field generating coils (3) provided at the top and bottom of each floor, Speed sensor and slide power, at least two sets of said buffer coils (2) are arranged at the upper and lower ends and the middle of the car (5), a plurality of said lasers (1) are evenly installed on the inner side wall of the elevator shaft, At least one of the laser detectors is installed on the car (5), and is arranged opposite to the laser (1), the slide power source, the magnetic field generating coil (3) and the buffer coil (2) ) Is electrically connected, the speed sensor is electrically connected to the laser detector, and is used to calculate the descending speed of the car (5), and when the descending speed is greater than the maximum stable speed, the power of the slide is started, the The magnetic field generating coil (3) generates an upward magnetic field and interacts with the downward magnetic field of the buffer coil (2) to achieve deceleration of the car (5).
The anti-slide device according to claim 1, further comprising a laser ranging sensor (4) and a controller, the laser ranging sensor (4) being installed at the bottom of the car (5), It is electrically connected to the speed sensor and is used to calculate the distance between the car (5) and the bottom surface; the controller is electrically connected to the slide power source and the distance between the car (5) and the bottom surface When it is 0, the slide power is cut off.
The anti-slide device according to claim 1, characterized in that: the arrangement interval of the lasers (1) on the elevator shaft is 20 cm.
The anti-slide device according to claim 1, characterized in that the speed at which the car (5) descends is calculated according to the time between the cars (5) passing between two adjacent lasers (1). , Where: v = 0.2 / t.
The anti-slide device according to claim 1, characterized in that the magnetic field generating coil (3) is a spiral coil.