CN112173912B - Elevator brake wheel wear degree monitoring system - Google Patents

Abstract

The elevator brake wheel wear degree monitoring system comprises a laser transmitter, a laser receiver, an infrared camera, an acoustic signal acquisition sensor, a height positioning sensor, wireless data transmission equipment and a computer; detecting the transverse position variation of the elevator dragging steel wire between the elevator brake wheel and the elevator car and between the elevator dragging steel wire and the counterweight through a laser transmitter and a laser receiver; acquiring an elevator dragging steel wire physical image between an elevator brake wheel and an elevator car and between the elevator brake wheel and a counterweight through an infrared camera, and analyzing the appearance form of the elevator dragging steel wire physical image through a computer; collecting acoustic signals generated by friction between an elevator brake wheel and an elevator dragging steel wire through an acoustic signal collecting sensor, and analyzing the collected acoustic signals through a computer; the actual space height and position of the elevator car and the balance weight are detected by the height positioning sensor, and the actual space height and position data of the elevator car are analyzed by the computer.

Description

An elevator brake wheel wear monitoring system

Technical Field

The invention belongs to the technical field of elevator safety monitoring, and in particular relates to an elevator brake wheel wear degree monitoring system.

Background technique

The elevator brake wheel is the main component of the elevator brake, and is also the structural part that directly contacts the elevator brake and the elevator traction wire, and plays an important role in the working process of the elevator. The elevator traction wire is suspended on the elevator brake wheel, one end of the elevator traction wire is connected to the elevator car, and the other end of the elevator traction wire is connected to the counterweight. When the elevator brake is working, the elevator traction wire will drive the elevator car up and down with the rotation of the elevator brake wheel.

Since both the elevator car and the counterweight are heavy, there is a large friction between the elevator traction wire and the elevator brake wheel. Frequent reciprocating use may easily cause dangerous situations such as the elevator brake wheel wearing out and failing or the elevator traction wire wearing and breaking, which may lead to elevator safety accidents. Therefore, it is necessary to regularly check the degree of wear of the elevator brake wheel and the elevator traction wire.

At present, the relevant safety inspections of elevators are completed by inspectors on site, and the elevator needs to be stopped during the safety inspection. The elevator outage will inevitably cause inconvenience to people going up and down the stairs, and there are also shortcomings such as low inspection efficiency and low inspection accuracy. In addition, the relevant safety inspections of elevators are carried out regularly, that is, they are intermittent inspections. If the elevator brake wheel is severely worn between two safety inspections, a safety accident may occur.

Summary of the invention

In view of the problems existing in the prior art, the present invention provides an elevator brake wheel wear monitoring system, which can monitor the wear degree of the elevator brake wheel and the elevator traction wire in real time, can promptly discover problems and issue alarms, and can also immediately notify maintenance personnel to arrive at the problematic elevator to repair it to eliminate safety hazards, thereby reducing the occurrence rate of safety accidents and ensuring the life safety of elevator users.

In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a system for monitoring the wear degree of an elevator brake wheel, comprising a first laser transmitter, a second laser transmitter, a first laser receiver, a second laser receiver, a wireless data transmission device and a computer; the first laser transmitter is used in conjunction with the first laser receiver, the first laser transmitter and the first laser receiver are both fixedly mounted on the wall of the elevator shaft, the first laser transmitter and the first laser receiver are arranged opposite to each other, the elevator traction wire between the elevator brake wheel and the counterweight is located between the first laser transmitter and the first laser receiver, and the first laser receiver is connected to the wireless data transmission device for wireless data; the second laser transmitter is used in conjunction with the second laser receiver, the second laser transmitter and the second laser receiver are both fixedly mounted on the wall of the elevator shaft, the second laser transmitter and the second laser receiver are arranged opposite to each other, the elevator traction wire between the elevator brake wheel and the elevator car is located between the second laser transmitter and the second laser receiver, and the second laser receiver is connected to the wireless data transmission device for wireless data; the wireless data transmission device is fixedly mounted on the top plate of the elevator shaft, the wireless data transmission device is connected to the computer for wireless data, and the computer is located in the remote monitoring room.

A row of laser emitting ports are provided on the first laser emitter and the second laser emitter, and a row of laser receiving ports are provided on the first laser receiver and the second laser receiver; the number of laser emitting ports on the first laser emitter is the same as that on the first laser receiver, and their positions correspond one to one. The first laser emitter cooperates with the second laser emitter to detect the lateral position change of the elevator traction wire between the elevator brake wheel and the counterweight; the number of laser emitting ports on the second laser emitter is the same as that on the second laser receiver, and their positions correspond one to one. The second laser emitter cooperates with the second laser receiver to detect the lateral position change of the elevator traction wire between the elevator brake wheel and the elevator car.

A first infrared camera and a second infrared camera are also fixedly installed on the wall of the elevator shaft, and both of the first infrared camera and the second infrared camera are wirelessly connected to the wireless data transmission equipment; the first infrared camera is facing the elevator traction wire between the elevator brake wheel and the counterweight, and the physical image of the elevator traction wire between the elevator brake wheel and the counterweight is acquired through the first infrared camera, and the appearance of the acquired physical image of the elevator traction wire is analyzed by a computer; the second infrared camera is facing the elevator traction wire between the elevator brake wheel and the elevator car, and the physical image of the elevator traction wire between the elevator brake wheel and the elevator car is acquired through the second infrared camera, and the appearance of the acquired physical image of the elevator traction wire is analyzed by a computer.

An acoustic signal acquisition sensor is fixedly installed on the housing of the elevator brake wheel. The acoustic signal acquisition sensor is wirelessly connected to the wireless data transmission device. The acoustic signal generated by the friction between the elevator brake wheel and the elevator traction wire is collected by the acoustic signal acquisition sensor, and the collected acoustic signal is analyzed by a computer.

A first height positioning sensor is fixedly installed on the top of the counterweight, and the first height positioning sensor is wirelessly connected to the wireless data transmission device. The actual spatial height and position of the counterweight are detected by the first height positioning sensor, and the actual spatial height and position data of the counterweight are analyzed by a computer; a second height positioning sensor is fixedly installed on the top of the elevator car, and the second height positioning sensor is wirelessly connected to the wireless data transmission device. The actual spatial height and position of the elevator car are detected by the second height positioning sensor, and the actual spatial height and position data of the elevator car are analyzed by a computer.

Beneficial effects of the present invention:

The elevator brake wheel wear monitoring system of the present invention can monitor the wear degree of the elevator brake wheel and the elevator traction wire in real time, can promptly discover problems and issue alarms, and can immediately notify maintenance personnel to arrive at the problematic elevator to repair it to eliminate safety hazards, thereby reducing the incidence of safety accidents and ensuring the life safety of elevator users.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a front view of a system for monitoring the wear degree of an elevator brake wheel according to the present invention;

FIG2 is an isometric view of an elevator brake wheel wear degree monitoring system according to the present invention;

In the figure, 1 is the first laser transmitter, 2 is the second laser transmitter, 3 is the first laser receiver, 4 is the second laser receiver, 5 is the wireless data transmission device, 6 is the elevator brake wheel, 7 is the counterweight, 8 is the elevator traction wire, 9 is the elevator car, 10 is the first infrared camera, 11 is the second infrared camera, 12 is the sound signal acquisition sensor, 13 is the first height positioning sensor, and 14 is the second height positioning sensor.

Detailed ways

The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1 and 2, a system for monitoring the wear degree of an elevator brake wheel comprises a first laser transmitter 1, a second laser transmitter 2, a first laser receiver 3, a second laser receiver 4, a wireless data transmission device 5 and a computer; the first laser transmitter 1 is used in conjunction with the first laser receiver 3, the first laser transmitter 1 and the first laser receiver 3 are both fixedly mounted on the wall of the elevator shaft, the first laser transmitter 1 and the first laser receiver 3 are arranged opposite to each other, the elevator traction wire 8 between the elevator brake wheel 6 and the counterweight 7 is located between the first laser transmitter 1 and the first laser receiver 3, and the first laser receiver 3 and the wireless data transmission device 5 for wireless data connection; the second laser transmitter 2 is used in conjunction with the second laser receiver 4, the second laser transmitter 2 and the second laser receiver 4 are both fixedly mounted on the wall of the elevator shaft, the second laser transmitter 2 and the second laser receiver 4 are arranged opposite to each other, the elevator traction wire 8 between the elevator brake wheel 6 and the elevator car 9 is located between the second laser transmitter 2 and the second laser receiver 4, and the second laser receiver 4 is wirelessly connected to the wireless data transmission device 5; the wireless data transmission device 5 is fixedly mounted on the top plate of the elevator shaft, the wireless data transmission device 5 is wirelessly connected to the computer, and the computer is located in the remote monitoring room.

A row of laser emitting ports are provided on the first laser emitter 1 and the second laser emitter 2, and a row of laser receiving ports are provided on the first laser receiver 3 and the second laser receiver 4; the number of laser emitting ports on the first laser emitter 1 is the same as that on the first laser receiver 3, and their positions correspond one to one. The first laser emitter 1 cooperates with the second laser emitter 2 to detect the lateral position change of the elevator traction wire 8 between the elevator brake wheel 6 and the counterweight 7; the number of laser emitting ports on the second laser emitter 2 is the same as that on the second laser receiver 4, and their positions correspond one to one. The second laser emitter 2 cooperates with the second laser receiver 4 to detect the lateral position change of the elevator traction wire 8 between the elevator brake wheel 6 and the elevator car 9.

A first infrared camera 10 and a second infrared camera 11 are also fixedly installed on the wall of the elevator shaft, and the first infrared camera 10 and the second infrared camera 11 are both wirelessly connected to the wireless data transmission device 5; the first infrared camera 10 is facing the elevator traction wire 8 between the elevator brake wheel 6 and the counterweight 7, and the physical image of the elevator traction wire 8 between the elevator brake wheel 6 and the counterweight 7 is obtained by the first infrared camera 10, and the appearance of the obtained physical image of the elevator traction wire 8 is analyzed by a computer; the second infrared camera 11 is facing the elevator traction wire 8 between the elevator brake wheel 6 and the elevator car 9, and the physical image of the elevator traction wire 8 between the elevator brake wheel 6 and the elevator car 9 is obtained by the second infrared camera 11, and the appearance of the obtained physical image of the elevator traction wire 8 is analyzed by a computer.

An acoustic signal acquisition sensor 12 is fixedly installed on the shell of the elevator brake wheel 6. The acoustic signal acquisition sensor 12 is wirelessly connected to the wireless data transmission device 5. The acoustic signal generated by the friction between the elevator brake wheel 6 and the elevator traction wire 8 is collected by the acoustic signal acquisition sensor 12, and the collected acoustic signal is analyzed by a computer.

A first height positioning sensor 13 is fixedly installed on the top of the counterweight 7, and the first height positioning sensor 13 is wirelessly connected to the wireless data transmission device 5. The actual spatial height and position of the counterweight 7 are detected by the first height positioning sensor 13, and the actual spatial height and position data of the counterweight 7 are analyzed by a computer; a second height positioning sensor 14 is fixedly installed on the top of the elevator car 9, and the second height positioning sensor 14 is wirelessly connected to the wireless data transmission device 5. The actual spatial height and position of the elevator car 9 are detected by the second height positioning sensor 14, and the actual spatial height and position data of the elevator car 9 are analyzed by a computer.

The following describes a one-time use process of the present invention in conjunction with the accompanying drawings:

When the elevator adopts the elevator brake wheel wear degree monitoring system of the present invention, after the elevator traction wire 8 passes around the elevator brake wheel 6, one end of the elevator traction wire 8 is connected to the elevator car 9, and the other end of the elevator traction wire 8 is connected to the balance weight 7. If the elevator brake wheel 6 is worn, the outer diameter of the elevator brake wheel 6 will be reduced accordingly. Therefore, the spacing between the elevator traction wires 8 on the left and right sides of the elevator brake wheel 6 will also be reduced synchronously, which is directly reflected in the change of the lateral position of the elevator traction wire 8. Due to the change in the lateral position of the elevator traction wire 8, the shielding position of the laser receiving port of the laser transmitter and the laser emitting port of the laser transmitter will change. After obtaining the change in the lateral position of the elevator traction wire 8, the outer diameter wear of the elevator brake wheel 6 can be converted into the spacing. Once the outer diameter wear of the elevator brake wheel 6 exceeds the safety setting value, the computer will immediately issue an alarm message, and the maintenance personnel can immediately go to the designated elevator for maintenance work after discovering the alarm message.

In addition, the first infrared camera 10 and the second infrared camera 11 can be used to obtain a physical image of the elevator traction wire 8. By using a computer to analyze the appearance of the elevator traction wire 8 using the acquired physical image, it is possible to intuitively observe from the image whether the elevator traction wire 8 has hidden dangers such as wire thinning and partial breakage, thereby providing further protection for the safe operation of the elevator.

At the same time, the first height positioning sensor 13 and the second height positioning sensor 14 can respectively obtain the actual spatial height and position data of the counterweight 7 and the elevator car 9. If the change in their actual spatial height and position data exceeds the safety set value, it means that the elevator brake wheel 6 may be worn or the elevator traction wire 8 is deformed too much. At this time, the computer will also issue an alarm message.

Furthermore, for the sound signal acquisition sensor 12 arranged on the shell of the elevator brake wheel 6, the sound signal generated by the friction between the elevator brake wheel 6 and the elevator traction wire 8 can be detected in real time. These real-time sound signals will be compared and analyzed with the sound signals under normal conditions stored in the computer. Once the real-time sound signal shows an abnormality, the computer will also issue an alarm message.

Through the above-mentioned multiple detection methods, hidden dangers in elevator operation can be discovered to the greatest extent, and maintenance personnel can repair and troubleshoot the problematic elevators as soon as possible, effectively ensuring the safety of elevator users.

The solutions in the embodiments are not intended to limit the patent protection scope of the present invention. All equivalent implementations or changes that do not deviate from the present invention are included in the patent scope of this case.

Claims (3)

1. A system for monitoring the wear degree of an elevator brake wheel, characterized in that it comprises a first laser transmitter, a second laser transmitter, a first laser receiver, a second laser receiver, a wireless data transmission device and a computer; the first laser transmitter is used in conjunction with the first laser receiver, the first laser transmitter and the first laser receiver are both fixedly mounted on the wall of the elevator shaft, the first laser transmitter and the first laser receiver are arranged opposite to each other, the elevator traction wire between the elevator brake wheel and the counterweight is located between the first laser transmitter and the first laser receiver, and the first laser receiver is connected to the wireless data transmission device by wireless data; the second laser transmitter is used in conjunction with the second laser receiver, the second laser transmitter and the second laser receiver are both fixedly mounted on the wall of the elevator shaft, the second laser transmitter and the second laser receiver are arranged opposite to each other, the elevator traction wire between the elevator brake wheel and the elevator car is located between the second laser transmitter and the second laser receiver, and the second laser receiver is connected to the wireless data transmission device by wireless data; the wireless data transmission device is fixedly mounted on the top plate of the elevator shaft, the wireless data transmission device is connected to the computer by wireless data, and the computer is located in a remote monitoring room; A row of laser emission ports are provided on the first laser emitter and the second laser emitter, and a row of laser receiving ports are provided on the first laser receiver and the second laser receiver; the number of laser emission ports on the first laser emitter is the same as that on the first laser receiver, and the positions correspond one to one. The first laser emitter cooperates with the second laser emitter to detect the lateral position change of the elevator traction wire between the elevator brake wheel and the counterweight; the number of laser emission ports on the second laser emitter is the same as that on the second laser receiver, and the positions correspond one to one. The second laser emitter cooperates with the second laser receiver to detect the lateral position change of the elevator traction wire between the elevator brake wheel and the elevator car; A first height positioning sensor is fixedly installed on the top of the counterweight, and the first height positioning sensor is wirelessly connected to the wireless data transmission device. The actual spatial height and position of the counterweight are detected by the first height positioning sensor, and the actual spatial height and position data of the counterweight are analyzed by a computer; a second height positioning sensor is fixedly installed on the top of the elevator car, and the second height positioning sensor is wirelessly connected to the wireless data transmission device. The actual spatial height and position of the elevator car are detected by the second height positioning sensor, and the actual spatial height and position data of the elevator car are analyzed by a computer; If the elevator brake wheel is worn, the outer diameter of the elevator brake wheel will decrease accordingly. Therefore, the spacing between the elevator traction wires on the left and right sides of the elevator brake wheel will also decrease synchronously, which is directly reflected in the change of the lateral position of the elevator traction wire. Due to the change in the lateral position of the elevator traction wire, the shielding position of the laser receiving port of the laser transmitter and the laser emitting port of the laser transmitter will change. After obtaining the change in the lateral position of the elevator traction wire, the wear of the outer diameter of the elevator brake wheel can be indirectly converted. 2. An elevator brake wheel wear degree monitoring system according to claim 1, characterized in that: a first infrared camera and a second infrared camera are also fixedly installed on the wall of the elevator shaft, and the first infrared camera and the second infrared camera are both wirelessly connected to the wireless data transmission equipment; the first infrared camera is facing the elevator traction wire between the elevator brake wheel and the counterweight, and the physical image of the elevator traction wire between the elevator brake wheel and the counterweight is acquired by the first infrared camera, and the appearance of the acquired physical image of the elevator traction wire is analyzed by a computer; the second infrared camera is facing the elevator traction wire between the elevator brake wheel and the elevator car, and the physical image of the elevator traction wire between the elevator brake wheel and the elevator car is acquired by the second infrared camera, and the appearance of the acquired physical image of the elevator traction wire is analyzed by a computer. 3. An elevator brake wheel wear degree monitoring system according to claim 1 is characterized in that: an acoustic signal acquisition sensor is fixedly installed on the shell of the elevator brake wheel, the acoustic signal acquisition sensor is wirelessly connected to the wireless data transmission equipment, the acoustic signal generated by the friction between the elevator brake wheel and the elevator traction wire is collected by the acoustic signal acquisition sensor, and the collected acoustic signal is analyzed by a computer.