CN114789953A - Construction elevator safety self-diagnosis device - Google Patents
Construction elevator safety self-diagnosis device Download PDFInfo
- Publication number
- CN114789953A CN114789953A CN202210615420.5A CN202210615420A CN114789953A CN 114789953 A CN114789953 A CN 114789953A CN 202210615420 A CN202210615420 A CN 202210615420A CN 114789953 A CN114789953 A CN 114789953A
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- China
- Prior art keywords
- elevator
- brake
- current transformer
- safety self
- construction elevator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
- B66B1/3446—Data transmission or communication within the control system
- B66B1/3461—Data transmission or communication within the control system between the elevator control system and remote or mobile stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3476—Load weighing or car passenger counting devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The invention provides a safety self-diagnosis device for a construction elevator, which comprises a speed sensor, a motor current transformer, a weight sensor, a brake current transformer, a relay, an RS485 interface, a human-computer interaction interface and an audible and visual alarm, wherein the speed sensor, the motor current transformer, the weight sensor, the brake current transformer, the relay, the RS485 interface, the human-computer interaction interface and the audible and visual alarm are electrically connected with a controller; the elevator is monitored in real time and automatically controlled, and the use safety is improved.
Description
Technical Field
The invention relates to the field of engineering equipment, in particular to a safety self-diagnosis device for a construction elevator.
Background
The lifter is important equipment in the construction process of building engineering, is used for realizing the transportation of materials, personnel and equipment, and ensures that the reliable operation of the lifter is the key of safe production. Wherein construction elevator includes: ground structure, cage, guide rail frame and electrically controlled device, guide rail frame and ground structure fixed connection and vertical setting, cage sliding connection is in guide rail frame one side, and electrically controlled device fixes at guide rail frame opposite side and is connected with the cage, and electrically controlled device drives the cage through the motor and reciprocates along guide rail frame, realizes the transportation.
The control of the lifting speed of the lifter is also very important, if the speed exceeds a standard value, lifting overwinding accidents, steel wire rope fracture accidents and cage falling accidents can be caused, and great threat can be brought to the personal safety. It is therefore essential to the measurement and the inspection and control of the hoisting speed and the hoisting stroke of the hoisting machine.
Disclosure of Invention
The invention provides a safety self-diagnosis device for a construction elevator, which mainly solves the technical problems that: the elevator can be monitored in real time and automatically controlled, and the use safety is improved.
In order to solve the above technical problems, the present invention provides a safety self-diagnosis device for a construction elevator, comprising:
the speed sensor, the motor current transformer, the weight sensor, the brake current transformer, the relay, the RS485 interface, the human-computer interaction interface and the audible and visual alarm are in electrical signal connection with the controller;
the speed sensor is used for measuring the ascending speed and the descending speed of the elevator in the running process;
the motor current transformer is used for measuring the working current of each driving motor;
the weight sensor is used for measuring the load of the elevator;
the brake current transformer is used for measuring the working current of the brake electromagnetic coil;
the relay is used for controlling the ascending, descending and stopping of the elevator;
the RS485 interface is used for the controller to exchange data with external equipment;
the human-computer interaction interface is used for displaying state data of the elevator;
the audible and visual alarm comprises an audible alarm and a light alarm and is used for giving an alarm when receiving the alarm signal of the controller.
Further, the construction elevator fault self-diagnosis device obtains the weight of the elevator according to the weight sensor, and if the acceleration time of the elevator is long or the current of the motor is larger than the current value corresponding to the current load, the failure of the elevator brake release can be diagnosed.
Further, the construction elevator fault self-diagnosis device obtains the elevator speed according to the speed sensor, if the elevator deceleration is slow during braking and the braking time is long, the elevator brake fault can be diagnosed.
Further, the construction elevator fault self-diagnosis device detects the brake current according to the brake current transformer, and when the brake is released, if the brake coil current exceeds the working range value, the fault such as open circuit or short circuit of the elevator brake coil can be diagnosed.
Furthermore, the construction elevator fault self-diagnosis device controls the elevator to stop through a relay according to the diagnosis result, gives an audible and visual alarm prompt, displays the fault state on a human-computer interaction interface, and sends the fault state to the remote monitoring platform through RS 485.
The beneficial effects of the invention are:
the safety self-diagnosis device for the construction hoist comprises a speed sensor, a motor current transformer, a weight sensor, a brake current transformer, a relay, an RS485 interface, a human-computer interaction interface and an audible and visual alarm, wherein the speed sensor, the motor current transformer, the weight sensor, the brake current transformer, the relay, the RS485 interface, the human-computer interaction interface and the audible and visual alarm are electrically connected with a controller; the elevator is monitored in real time and automatically controlled, and the use safety is improved.
Drawings
Fig. 1 is a schematic structural view of a safety self-diagnosis device of a construction hoist according to the present invention;
fig. 2 is a schematic view illustrating a safety self-diagnosis apparatus for a construction elevator according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following detailed description and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
The first embodiment is as follows:
referring to fig. 1, the present invention provides a safety self-diagnosis apparatus for a construction elevator, including:
the speed sensor, the motor current transformer, the weight sensor, the brake current transformer, the relay, the RS485 interface, the human-computer interaction interface and the audible and visual alarm are in electrical signal connection with the controller;
the speed sensor is used for measuring the ascending speed and the descending speed of the elevator in the running process;
the motor current transformer is used for measuring the working current of each driving motor;
the weight sensor is used for measuring the load of the elevator;
the brake current transformer is used for measuring the working current of the brake electromagnetic coil;
the relay is used for controlling the ascending and descending of the elevator and stopping;
the RS485 interface is used for the controller to exchange data with external equipment;
the human-computer interaction interface is used for displaying the state data of the elevator;
the audible and visual alarm comprises an audible alarm and a light alarm and is used for giving an alarm when receiving an alarm signal of the controller.
Further, the construction elevator fault self-diagnosis device obtains the weight of the elevator according to the weight sensor, and if the acceleration time of the elevator is long or the current of the motor is larger than the current value corresponding to the current load, the elevator brake can be diagnosed to remove the brake fault.
Further, the construction elevator fault self-diagnosis device obtains the elevator speed according to the speed sensor, if the elevator deceleration is slow during braking and the braking time is long, the elevator brake fault can be diagnosed.
Further, the construction elevator fault self-diagnosis device detects the brake current according to the brake current transformer, and when the brake is released, if the brake coil current exceeds the working range value, the fault such as open circuit or short circuit of the elevator brake coil can be diagnosed.
Further, the construction elevator fault self-diagnosis device controls the elevator to stop through a relay according to the diagnosis result, gives out an audible and visual alarm prompt, displays the fault state on a human-computer interaction interface, and sends the fault state to the remote monitoring platform through RS 485.
In other embodiments of the present invention, the construction elevator safety self-diagnosis apparatus further includes: the infrared sensor is in electrical signal connection with the controller, and comprises a first infrared sensor arranged at the bottom of a lifting cage of the elevator and a second infrared sensor arranged at the top of the lifting cage, and the first infrared sensor is used for detecting a first distance between the lifting cage and the ground and sending the first distance to the controller; the second infrared sensor is used for detecting a second distance between the lifting cage and the top of the lifter and sending the second distance to the controller.
In other embodiments of the invention, the construction elevator safety self-diagnosis device further comprises an acceleration sensor and a temperature sensor which are electrically connected with the controller, wherein the acceleration sensor is used for detecting the acceleration of the elevator and sending the acceleration to the controller; the temperature sensor detects the temperature of the brake disc of the elevator and sends the temperature to the controller.
The infrared sensor, the acceleration sensor and the temperature sensor collect relevant data in real time and transmit the data to the controller, and the controller analyzes the collected data and gives an alarm by controlling the sound alarm and the light alarm.
In this embodiment, buzzer can be chooseed for use to the audible alarm, and red LED lamp can be chooseed for use to the light alarm. For example, when the temperature sensor acquires that the temperature of the elevator brake disc is too high, a certain potential safety hazard is indicated, and at the moment, the buzzer alarms and the red LED lamp flickers.
Similarly, the acceleration of the elevator cage, whether it is up or down, should be within a safe range, and when the acceleration exceeds a set range, the performance limit of the elevator may be exceeded, so that there is a high safety risk that the controller over-controls the audible alarm and the light alarm to trigger an alarm.
First infrared sensor and second infrared sensor are used for measuring the relative distance between lifting cage and ground and the lift top, and the motion of lifting cage should be limited between ground and the bottom, if surpass the motion range, will lead to promoting overwinding accident, wire rope fracture accident, cage accident etc. and this embodiment guarantees the lift and transports in the safety space within range through detecting the relative distance between lifting cage and ground and the lift top, guarantees the security of lift.
The human-computer interaction interface is in electric signal connection with the controller and is used for displaying the state data of the elevator in real time. In this embodiment, the human-computer interface may be implemented by the monitor, and may be disposed inside the lift cage for an operator or a passenger to know the state of the lift in real time, such as information about the rising height, the speed, the acceleration, the safety prompt, and the abnormal situation.
In other embodiments of the present invention, the system further includes a radio frequency electronic tag and a radio frequency card reader, wherein the radio frequency electronic tag is embedded in a safety helmet worn by a project constructor, each radio frequency electronic tag is used for writing in identity information of a corresponding project constructor in advance, the radio frequency card reader is in electrical signal connection with the controller, and the radio frequency card reader is arranged in the lifting cage and is used for reading and identifying information of personnel entering the lifting cage.
Constructors wear safety helmets with built-in radio frequency electronic tags, when entering a lifting cage, a radio frequency card reader installed in the lifting cage can read and identify, on one hand, the number of people taking in the current lifting cage can be counted, overweight is avoided, on the other hand, the specific identity information of the constructors can be acquired by reading the radio frequency electronic tags, and therefore each constructor can be monitored in a construction site.
In order to realize intelligent identification of faults such as misalignment, loose connection, improper assembly, failure and damage of gears or bearings and the like of a rotor and a coupler of a motor and ensure system safety, in other embodiments of the invention, the safety self-diagnosis device for the construction elevator further comprises four first vibration sensors, two of the four first vibration sensors are arranged on a front end cover of the motor, the other two first vibration sensors are arranged on a rear end cover of the motor, and induction ends of the two first vibration sensors arranged on the front end cover and the rear end cover of the motor respectively correspond to the radial direction and the axial direction of the rotor of the motor and are used for measuring vibration signals of the rotor in the radial direction and the axial direction.
For example, the two first vibration sensors arranged on the front end cover of the motor have sensing ends perpendicular to each other, wherein the sensing end of one sensor faces the outer wall of the rotor, and the sensing end of the other sensor is attached to the outer wall of the rotor and is parallel to the axial direction of the rotor. Similarly, the two first vibration sensors arranged on the rear end cover of the motor are also arranged in this way.
In other embodiments of the present invention, the safety self-diagnosis apparatus for a construction elevator further comprises four second vibration sensors, two of which are disposed on the end cap of the input end of the speed reducer, and the other two of which are disposed on the end cap of the output end of the speed reducer; the sensing ends of the two second vibration sensors arranged on the end cover of the input end of the speed reducer respectively correspond to the radial direction and the axial direction of the input shaft of the speed reducer and are used for measuring vibration signals of the input shaft of the speed reducer in the radial direction and the axial direction; the induction ends of the two second vibration sensors arranged on the end cover of the output end of the speed reducer respectively correspond to the radial direction and the axial direction of the output shaft of the speed reducer and are used for measuring vibration signals of the output shaft of the speed reducer in the radial direction and the axial direction.
For example, the sensing ends of two second vibration sensors arranged on the end cover of the input end of the speed reducer are perpendicular to each other, wherein the sensing end of one second vibration sensor is over against the outer wall of the input end (i.e. the radial direction of the input shaft), and the sensing end of the other second vibration sensor is attached to the outer wall of the input shaft and is parallel to the axial direction of the input shaft (i.e. the axial direction of the input shaft); similarly, the two second vibration sensors arranged on the end cover of the output end of the speed reducer can also be arranged in the mode and used for measuring vibration signals of the output shaft of the speed reducer in the radial direction and the axial direction. Through the second vibration sensor, the intelligent identification of faults such as misalignment of the rotor and the coupler of the speed reducer, loose connection, improper assembly, failure and damage of a gear or a bearing and the like can be realized.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. For those skilled in the art to which the invention pertains, numerous simple deductions or substitutions may be made without departing from the spirit of the invention, which shall be deemed to belong to the scope of the invention.
Claims (5)
1. The safety self-diagnosis device for the construction elevator is characterized by comprising a speed sensor, a motor current transformer, a weight sensor, a brake current transformer, a relay, an RS485 interface, a human-computer interaction interface and an audible and visual alarm, wherein the speed sensor, the motor current transformer, the weight sensor, the brake current transformer, the relay, the RS485 interface, the human-computer interaction interface and the audible and visual alarm are in electrical signal connection with a controller;
the speed sensor is used for measuring the ascending speed and the descending speed in the running process of the elevator;
the motor current transformer is used for measuring the working current of each driving motor;
the weight sensor is used for measuring the load size of the elevator;
the brake current transformer is used for measuring the working current of the brake electromagnetic coil;
the relay is used for controlling the stop of the elevator;
the RS485 interface is used for remotely monitoring the working state of the brake;
the human-computer interaction interface is used for displaying the state data of the elevator;
the audible and visual alarm comprises an audible alarm and a light alarm and is used for giving an alarm when receiving the alarm signal of the controller.
2. The construction elevator safety self-diagnosis apparatus as set forth in claim 1, wherein the construction elevator safety self-diagnosis apparatus obtains an elevator on-board weight from the weight sensor, and if the elevator acceleration time is long or the motor current is greater than the current load corresponding current value, it can diagnose the elevator brake release brake failure.
3. The construction elevator safety self-diagnosis apparatus as set forth in claim 2, wherein the construction elevator safety self-diagnosis apparatus obtains the elevator speed from the speed sensor, and if the elevator deceleration is slow at the time of braking and the braking time is long, it diagnoses a brake failure of the elevator brake.
4. The construction elevator safety self-diagnosis apparatus as set forth in claim 3, wherein the construction elevator safety self-diagnosis apparatus detects a brake current based on the brake current transformer, and diagnoses a fault such as an open or short circuit of the elevator brake coil if the brake coil current exceeds a working range value when the brake is released.
5. The construction elevator safety self-diagnosis device according to claim 4, wherein the construction elevator safety self-diagnosis device controls the elevator to stop through a relay, displays a fault state on a human-computer interface through an audible and visual alarm, and transmits the fault state to a remote monitoring platform through RS485 according to the diagnosis result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210615420.5A CN114789953A (en) | 2022-06-01 | 2022-06-01 | Construction elevator safety self-diagnosis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210615420.5A CN114789953A (en) | 2022-06-01 | 2022-06-01 | Construction elevator safety self-diagnosis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114789953A true CN114789953A (en) | 2022-07-26 |
Family
ID=82462983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210615420.5A Pending CN114789953A (en) | 2022-06-01 | 2022-06-01 | Construction elevator safety self-diagnosis device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114789953A (en) |
-
2022
- 2022-06-01 CN CN202210615420.5A patent/CN114789953A/en active Pending
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