CN114104893B - Elevator brake fault protection function detection method and detection system - Google Patents

Elevator brake fault protection function detection method and detection system Download PDF

Info

Publication number
CN114104893B
CN114104893B CN202111056045.7A CN202111056045A CN114104893B CN 114104893 B CN114104893 B CN 114104893B CN 202111056045 A CN202111056045 A CN 202111056045A CN 114104893 B CN114104893 B CN 114104893B
Authority
CN
China
Prior art keywords
brake
fault
elevator
external detection
closed
Prior art date
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.)
Active
Application number
CN202111056045.7A
Other languages
Chinese (zh)
Other versions
CN114104893A (en
Inventor
陈建勋
戚政武
苏宇航
杨宁祥
梁敏健
李继承
刘德阳
林晓明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Inspection and Research Institute of Special Equipment Zhuhai Inspection Institute
Original Assignee
Guangdong Inspection and Research Institute of Special Equipment Zhuhai Inspection Institute
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangdong Inspection and Research Institute of Special Equipment Zhuhai Inspection Institute filed Critical Guangdong Inspection and Research Institute of Special Equipment Zhuhai Inspection Institute
Priority to CN202111056045.7A priority Critical patent/CN114104893B/en
Publication of CN114104893A publication Critical patent/CN114104893A/en
Application granted granted Critical
Publication of CN114104893B publication Critical patent/CN114104893B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
    • B66B5/0093—Testing of safety devices
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies

Landscapes

  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

The invention discloses a detection method and a detection system for a fault protection function of an elevator brake, which relate to the technical field of elevator brake detection.

Description

Elevator brake fault protection function detection method and detection system
Technical Field
The invention relates to the technical field of elevator brake inspection and detection, in particular to a method and a system for detecting a fault protection function of an elevator brake.
Background
The brake is an important safety part of an elevator, where the importance is as important as the braking system of the car for car safety. The function of the brake during elevator operation is mainly characterized in that firstly, the brake realizes zero-speed band-type brake braking when the elevator normally stops at a landing, so that the elevator is always in a stop state when passengers enter and exit, and secondly, when the elevator car breaks down in the motion process, the brake implements emergency braking, so that the elevator is in emergency stop operation at a certain deceleration, and the life and property safety of passengers in the car is ensured.
The current national standard GB 7588-2003 safety regulations for elevator manufacture and installation, 12.4.2.1, states that all mechanical brake components involved in applying a braking force to a brake wheel or disc should be installed in two groups. If one group is not active, there should still be enough braking force to slow down the car carrying the rated load down at the rated speed. According to the standard requirements, two sets of brakes are arranged on the elevator main machine, and the two sets of brakes can synchronously act when the elevator is in normal operation. The existing special equipment safety technical specification TSG-T7001-2009 (regulations for supervision and periodic inspection of elevators) in 2.8 (8) prescribes that the special equipment safety technical specification should have a brake failure protection function, and when the lifting (or releasing) failure of a brake is monitored, the normal starting of an elevator can be prevented. The brake fault protection function generally monitors the lifting or releasing action of the brake through a brake fault protection switch when working, and when the brake is monitored to act (lifting action or releasing action), the brake fault protection switch sends a switch signal to the elevator main controller to verify the action state of the brake, and when four brake action faults of two brake lifting faults, two brake releasing faults, a single brake lifting fault or a single brake releasing fault occur, the elevator is prevented from being normally started again until an maintainer manually restores the fault. The brake fault protection switch adopts a normally open independent wiring form and a normally closed independent wiring form as the premise that the brake fault protection function is effective, and under the premise that the elevator main control board recognizes the action state of the brake fault protection switch, the elevator brake fault protection function also needs to effectively monitor whether four brake action faults occur or not through a fault monitoring program operated by the elevator main control board, and can prevent the elevator from being normally started when the brake action faults are monitored, so that the safe operation of the elevator is ensured. Although part of elevators have a correct wiring mode of a brake fault protection switch, because the PLC control program related to the brake fault monitoring function has a problem, or the fault monitoring function of the main control panel is manually shielded by elevator maintenance personnel, the fault protection function of the elevator brake is invalid, and the action fault of the brake cannot be monitored, so that the elevator still continues to operate when the brake lifting failure or the brake releasing failure occurs, potential safety hazards occur, and safety accidents are induced.
When the validity of the brake fault protection function is checked by the traditional method, frequent disconnection and wiring are needed, and the elevator is required to be powered off and on before and after each disconnection, and because the action fault types of the brake of the elevator are more, the operation is time-consuming and labor-consuming, the efficiency is low, and the possibility of wiring misoperation exists, so that accidental damage is caused to the elevator.
Disclosure of Invention
The invention aims to provide a detection method and a detection system for a fault protection function of an elevator brake, which are characterized in that an external detection switch is arranged through simple one-time wire disassembly operation, brake action fault signals are simulated through an automatic instrument, the on-off state of a power loop of an elevator host machine is automatically judged through a loop on-off detection module in a non-contact mode, the effective detection of the fault protection function of the brake under various brake fault modes is realized, the detection efficiency and the detection accuracy are improved, the labor intensity is reduced, the safety of operators and the elevator is protected, and the method and the system have practicability and innovation.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the elevator brake fault protection function detection method is characterized in that four external detection switches Ka1, kb1, ka2 and Kb2 are arranged in series or in parallel with two brake fault protection switches KBZ1 and KBZ2 of an elevator, so that control of a main control panel signal input by the brake fault protection switches is realized, the combination of on-off states of the four external detection switches is controlled through a switch on-off control module, and different brake opening failure or closing failure fault signals are simulated;
the elevator main power supply is disconnected before the external detection switch is arranged, then the disconnection line connection of the external detection switch is carried out, ka1 and Ka2 are set to be disconnected and Kb1 and Kb2 are set to be closed in a default state, after the elevator is electrified again, the signal state of the original input main control board of the elevator is not changed after the state of the external detection switch is initialized;
if the KBZ1 is in the off state, only one external detection switch Kb1 needs to be connected in series and the external detection switch is controlled to be turned off, and no matter whether the KBZ1 is on or off, the main control board can not receive signals; if the KBZ1 is in a closed state, only one external detection switch Ka1 is connected in parallel and is controlled to be closed, and whether the KBZ1 is on or off or not is judged, and the main control board can receive a positive voltage signal; if the KBZ2 is in the off state, only one external detection switch Kb2 needs to be connected in series and the external detection switch is controlled to be turned off, and no matter whether the KBZ2 is on or off, the main control board can not receive signals; if the KBZ2 is in a closed state, only one external detection switch Ka2 is connected in parallel and is controlled to be closed, and no matter whether the KBZ2 is on or off, the main control board can receive a positive voltage signal.
Wherein the brake opening failure types during elevator operation include: an open failure of the brake, an open failure of the brake II, and a simultaneous open failure of the brake I and the brake II;
when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the brake fails to be opened, the setting states of the external detection switches are Ka1, ka2 and Kb1 are opened and Kb2 is closed;
when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the second brake fails to be opened, the setting states of the external detection switches are Ka1, ka2 and Kb2 are opened and Kb1 is closed;
when the wiring form is normally open independent signal wiring, and the type of fault to be simulated is that the first brake and the second brake are opened simultaneously and fail, the setting states of the external detection switches are Ka1, ka2, kb1 and Kb2 are all disconnected;
the detection system presets the on-off states of four external detection switches through an external test line, immediately and suddenly stops when the elevator is started, and simultaneously reports faults, so that the brake fault protection function aiming at the fault type is effective, and if the elevator still operates normally, the brake fault protection function aiming at the fault type is ineffective;
for three brake opening failure types, one test was performed according to the above procedure.
Wherein the brake opening failure types during elevator operation include: an open failure of the brake, an open failure of the brake II, and a simultaneous open failure of the brake I and the brake II;
when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the brake fails to be opened, the setting states of the external detection switches are Ka1, kb1 and Kb2 closed and Ka2 opened;
when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the second brake fails to be opened, the setting states of the external detection switches are Ka2, kb1 and Kb2 closed and Ka1 opened;
when the wiring form is normally closed independent signal wiring and the type of faults to be simulated is that the first brake and the second brake are opened simultaneously and fail, the setting states of the external detection switches are Ka1, ka2, kb1 and Kb 2;
the detection system presets the on-off states of four external detection switches through an external test line, immediately and suddenly stops when the elevator is started, and simultaneously reports faults, so that the brake fault protection function aiming at the fault type is effective, and if the elevator still operates normally, the brake fault protection function aiming at the fault type is ineffective;
for three brake opening failure types, one test was performed according to the above procedure.
Wherein, the brake switching-on fault type when elevator operates includes: the brake I fails to close, the brake II fails to close, and the brake I and the brake II fail to close simultaneously;
when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the brake-on fails, the setting states of the external detection switches are Ka1, kb1 and Kb2 closed and Ka2 opened;
when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the two-way brake fails, the setting states of the external detection switch are Ka2, kb1 and Kb2 closed and Ka1 opened;
when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the brake I and the brake II are closed simultaneously and fail, the setting states of the external detection switches are Ka1 and Ka2 closed and Kb1 and Kb2 open;
the normal operation of the elevator is controlled, the on-off state of the external detection switch is preset for fault state in the operation process of the elevator, the elevator is operated to stop, if the elevator stops, the fault is immediately reported and the elevator cannot be restarted, the brake fault protection function aiming at the fault type is effective, if the elevator stops, the fault is not reported and the elevator can be restarted normally, and the brake fault protection function aiming at the fault type is invalid;
and aiming at three brake closing fault types, performing a test according to the process.
Wherein, the brake switching-on fault type when elevator operates includes: the brake I fails to close, the brake II fails to close, and the brake I and the brake II fail to close simultaneously;
when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the brake-on fails, the setting states of the external detection switches are Ka1, ka2 and Kb1 are opened and Kb2 is closed;
when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the two-way brake fails, the setting states of the external detection switches are Ka1, ka2 and Kb2 are opened and Kb1 is closed;
when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the brake I and the brake II are switched on simultaneously and fail, the setting states of the external detection switches are Ka1, ka2, kb1 and Kb2 are all switched off;
the normal operation of the elevator is controlled, the on-off state of the external detection switch is preset for fault state in the operation process of the elevator, the elevator is operated to stop, if the elevator stops, the fault is immediately reported and the elevator cannot be restarted, the brake fault protection function aiming at the fault type is effective, if the elevator stops, the fault is not reported and the elevator can be restarted normally, and the brake fault protection function aiming at the fault type is invalid;
and aiming at three brake closing fault types, performing a test according to the process.
Compared with the prior art, the elevator brake fault protection function detection method has the following advantages:
1. four external detection switches are arranged to be on-off through the on-off control module, six brake fault signals of single-side or double-side opening faults and closing faults of the brake can be simulated, the detection content is comprehensive, the elevator power supply is not required to be frequently on-off, and the test is safe;
2. the effectiveness of the fault protection function of the elevator brake after the fault signal occurs is automatically detected through the loop on-off detection module, and the testing efficiency and the accuracy are high.
An elevator brake failsafe function detection system comprising: the device comprises a processor, a switch on-off control module, a loop on-off detection module and a touch control screen, wherein the switch on-off control module, the loop on-off detection module and the touch control screen are connected with the processor;
the switch on-off control module is used for controlling the on-off of the four external detection switches Ka1, kb1, ka2 and Kb2 so as to simulate different brake fault signals to the elevator main control panel;
the loop on-off detection module is used for detecting the on-off of a traction host power loop so as to judge whether the elevator triggers the fault protection of the brake after receiving a fault signal;
the touch control screen is used for realizing man-machine interaction between the equipment and an operator, and the processor is controlled in a WiFi or Bluetooth mode.
The circuit on-off detection module adopts an electromagnetic induction on-off detection switch to realize non-contact detection of whether current passes through a detected circuit or not;
when the current in the tested circuit passes or not, the electromagnetic induction on-off detection switch outputs switching values in different states to the processor, and the processor judges the running state of the elevator according to the received state of the switching values.
Specifically, the processor is a singlechip or a PLC.
The elevator brake fault protection function detection system has the same advantages as the elevator brake fault protection function detection method compared with the prior art, and is not described in detail herein.
Drawings
FIG. 1 is a schematic circuit diagram of a brake failsafe switch in a normally open independent signal wiring mode;
FIG. 2 is a schematic circuit diagram of a brake failsafe switch in a normally closed independent signal wiring mode;
fig. 3 is a schematic circuit diagram of an external detection switch in a detection system and a detection method for detecting a fault protection function of an elevator brake according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a loop on-off detection module in a detection system for detecting a traction host power loop according to the method for detecting a fault protection function of an elevator brake according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of a method and a system for detecting a fault protection function of an elevator brake according to an embodiment of the present invention;
fig. 6 is a schematic diagram of connection between system modules in a method and a system for detecting a fault protection function of an elevator brake according to an embodiment of the present invention.
Reference numerals:
1-a processor; 2-touching a control screen; 3-a loop on-off detection module; and 4-a switch on-off control module.
Detailed Description
In order to facilitate understanding, the following describes in detail the method and the system for detecting the fault protection function of the elevator brake according to the embodiments of the present invention with reference to the accompanying drawings.
Two normal connection modes of the elevator brake fault protection switch are introduced. As shown in fig. 1 and 2, the elevator has two sets of brakes, namely a first brake and a second brake, each set of brakes has a corresponding brake fault protection switch, namely KBZ1 and KBZ2, and the on-off state of the brake fault protection switches directly reflects the action state of the brakes. For normal operation elevators, there are two modes of connection for the brake failsafe switch: normally open independent signal mode or normally closed independent signal mode. For the normally open independent signal mode, the brake is switched on when the elevator stops, the brake fault protection switches KBZ1 and KBZ2 are in an open state, the main control board can not receive signals, the brake is switched on when the elevator operates, the brake fault protection switches KBZ1 and KBZ2 are in a closed state, and the main control board receives direct current signals. For a normally closed signal mode, when the elevator stops, the brake is switched on, the brake fault protection switches KBZ1 and KBZ2 are in a closed state, the main control board receives a direct current signal, when the elevator operates, the brake is opened, the brake fault protection switches KBZ1 and KBZ2 are in an open state, and the main control board cannot receive the signal. For the elevator with normal brake fault protection function, if the type of the signal received by the main control board is inconsistent with the above description when the brake acts, the elevator can be warned of faults, the elevator can not be started again, the effect of fault protection is achieved, and the situation that the elevator is in operation with a brake or the brake is not closed in place when the elevator stops is prevented.
As shown in fig. 3, according to the elevator brake fault protection function detection method and detection system provided by the embodiment of the invention, four external detection switches Ka1, kb1, ka2 and Kb2 are arranged in series or in parallel with 2 brake fault protection switches KBZ1 and KBZ2 of an elevator, so that control of a main control panel signal input by the brake fault protection switches is realized, and the combination of the on-off states of the four external detection switches is controlled by a switch on-off control module, so that different brake opening failure or closing failure fault signals can be simulated. The elevator main power supply is disconnected before the external detection switch is arranged, then the external detection switch is disconnected and connected, ka1 and Ka2 are disconnected and Kb1 and Kb2 are closed under a default state, and after the elevator is electrified again, the signal state of the original input main control board of the elevator is not changed after the state of the external detection switch is initialized.
The principle of simulating input signals of brake fault protection switches (action monitoring switches) KBZ1 and KBZ2 to a control main board through four external detection switches is as follows: taking a monitoring switch KBZ1 of a brake I as an example, according to a circuit control logic relationship, if the KBZ1 is in an open state, only an external detection switch KB1 needs to be connected in series and the external detection switch is controlled to be opened, no matter whether the KBZ1 is on or off, the main control board can not receive signals, if the KBZ1 is in a closed state, only an external detection switch Ka1 needs to be connected in parallel and the external detection switch is controlled to be closed, and no matter whether the KBZ1 is on or off, the main control board can receive positive voltage signals.
The brake opening fault types during elevator operation include: an open failure of the brake, an open failure of the brake two, and a simultaneous open failure of the brake one and the brake two. With reference to fig. 3, the states of the four external detection switches to be set when the simulated brake fails in different opening conditions are shown in table 1.
TABLE 1 external test switch set-up status when simulating different brake open faults
Figure BDA0003254698490000101
Figure BDA0003254698490000111
For the verification of the effectiveness of the fault protection mechanisms of different brake opening actions, before the elevator is operated to normally run, the on-off of an external detection switch is controlled to set the circuit to be in an original state (Ka 1 and Ka2 are opened, and Kb1 and Kb2 are closed). Then, fault state simulation is carried out, according to the table 1, the detection system presets the on-off states of the four external detection switches through the external test lines, if the elevator is started immediately and suddenly stopped (the power circuit has a transient pulse current signal), and meanwhile, a fault is reported, the fault protection function of the brake aiming at the fault type is effective, and if the elevator is still in normal operation (the power circuit has current), the fault protection function of the brake aiming at the fault type is ineffective. For three types of brake opening failure (brake one open failure, brake two open failure, two brake simultaneous open failure), one test was performed according to the above procedure. For example, for a circuit of a normally closed independent signal wiring mode, the effectiveness of a second opening fault protection mechanism of the brake is detected, and the process is as follows: when the elevator stops, the external detection switch is controlled to be turned on or off to set the circuit to be in an original state (Ka 1 and Ka2 are turned off, kb1 and Kb2 are turned on), so that Ka2, kb1 and Kb2 are turned on, signals received by the main control panel are unchanged, then the elevator is controlled to operate, the brake is turned on to enable the fault protection switches KBZ1 and KBZ2 to be turned on, but the main control panel still receives an electric signal of the brake fault protection switch II because Ka2 is turned on, at the moment, if the elevator is normally started to indicate that the brake II is turned on, the fault protection function is invalid, the elevator is not in accordance with the elevator inspection rule requirement, if the elevator is started to stop operating instantly, the brake II is indicated to be effective, and the elevator inspection rule requirement is met.
The brake closing fault types when the elevator stops include: the brake one fails to close, the brake two fails to close, and the brake one and the brake two fail to close simultaneously. With reference to fig. 3, the states of the four external detection switches to be set when the simulated brake has different closing faults are shown in table 2.
Table 2 externally connected detection switch state when simulating brake closing fault
Figure BDA0003254698490000121
Before fault simulation, the on-off of an external detection switch is controlled to set a circuit to be in an original state (Ka 1 and Ka2 are opened, and Kb1 and Kb2 are closed) aiming at the validity test of fault protection mechanisms of closing actions of different brakes. The normal operation of the elevator is controlled, the on-off state of the external detection switch is preset in the operation process of the elevator according to the table 2, the elevator is operated to stop, if the elevator is stopped, the fault is immediately reported and the elevator cannot be started again (the power circuit is always free of current), the brake fault protection function aiming at the fault type is effective, and if the elevator is not reported and can be started normally again (the power circuit is provided with current) after the elevator stops operation, the brake fault protection function aiming at the fault type is ineffective. For three brake closing failure types (brake one closing failure, brake two closing failure and brake two closing failure at the same time), a test is carried out according to the above process. For example, for a circuit of a normally open independent signal wiring mode, the effectiveness of a brake-closing fault protection mechanism is detected, and the method comprises the following steps: when the elevator stops running, the external detection switch is controlled to be in an on-off state (Ka 1 and Ka2 are disconnected, kb1 and Kb2 are closed), a circuit is set to be in an original state of the elevator, the elevator is controlled to normally run, ka1, kb1 and Kb2 are closed and Ka2 are disconnected in the running process, signals received by a main control board of the elevator are not influenced at the moment, then the elevator is controlled to stop, KBZ1 and KBZ2 are disconnected, but the main control board still receives an electric signal of a first brake fault protection switch because Ka1 is closed, if the elevator immediately reports a fault and can not control the elevator to start again at the moment, the first brake fault protection function is effective, the requirement of a test procedure is met, if the elevator stops, the first brake fault protection function is ineffective, and the requirement of the test procedure is not met.
As shown in fig. 4, whether the elevator can be started or not is detected by judging whether the power circuit has current or not, so as to judge whether the elevator brake fault protection function can effectively protect the brake fault. The circuit on-off detection module detects whether current passes through the power circuit, if continuous current passes through the power circuit, the elevator can be restarted, the brake fault protection function aiming at the fault fails, the elevator cannot be restarted when no current passes through, and the brake fault protection function aiming at the fault is normal. The loop on-off detection module adopts an electromagnetic induction on-off detection switch to realize non-contact detection of whether current passes through a detected circuit, the electromagnetic induction on-off detection switch outputs switching values in different states to the processor when the current passes through the detected circuit, and the processor judges the running state of the elevator according to the received switching value.
The effectiveness detection flow of the elevator brake fault protection function aiming at different brake action faults is shown in fig. 5, an external detection switch is connected to a brake fault protection circuit after an elevator power supply is cut off, the connection principle is shown in fig. 3, and an electromagnetic induction on-off detection switch is connected to an elevator host power loop, and the connection principle is shown in fig. 4. After the detection preparation work is finished, the power supply of the elevator is restored, and then the protection function validity detection of the opening faults of the three brakes and the protection function validity detection of the closing faults of the three brakes are carried out. Wherein the brake-on fault types include: an open failure of the brake, an open failure of the brake II, and a simultaneous open failure of the brake I and the brake II; the brake closing fault types include: the brake one fails to close, the brake two fails to close, and the brake one and the brake two fail to close simultaneously. It should be noted that the sequence of detection of the six brake actuation failure protection functions is not limited to the description of fig. 5, and may be changed as desired. And after the detection is finished, the elevator is restored to an initial state (the main power supply of the elevator is cut off, and the external detection switch and the electromagnetic induction on-off detection switch are removed), so that the test is finished.
Fig. 6 is a module connection principle of a brake fault protection function detection system, wherein the detection system comprises a processor 1, a touch control screen 2, a loop on-off detection module 3 and a switch on-off control module 4; the touch control screen 2 is used for realizing man-machine interaction between the equipment and an operator, and is used for controlling the processor 1 in a wireless mode such as WiFi or Bluetooth. Specifically, the processor 1 may be a single-chip microcomputer, a PLC or other computing processing unit; the switch on-off control module 4 realizes the control on the on-off of four external detection switches Ka1, kb1, ka2 and Kb2 so as to simulate different brake fault signals to the elevator main control panel; the loop on-off detection module 3 is used for detecting the on-off of a traction host power loop so as to judge whether the elevator triggers the fault protection of the brake after receiving the fault signal.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (4)

1. The elevator brake fault protection function detection method is characterized in that four external detection switches Ka1, kb1, ka2 and Kb2 are arranged to be connected in series or in parallel with two brake fault protection switches KBZ1 and KBZ2 of an elevator, so that control of a main control panel signal input by the brake fault protection switches is realized, the combination of on-off states of the four external detection switches is controlled through a switch on-off control module, and different brake opening failure or closing failure fault signals are simulated;
the elevator main power supply is disconnected before the external detection switch is arranged, then the disconnection line connection of the external detection switch is carried out, ka1 and Ka2 are set to be disconnected and Kb1 and Kb2 are set to be closed in a default state, after the elevator is electrified again, the signal state of the original input main control board of the elevator is not changed after the state of the external detection switch is initialized;
if the KBZ1 is in the off state, only one external detection switch Kb1 needs to be connected in series and the external detection switch is controlled to be turned off, and no matter whether the KBZ1 is on or off, the main control board can not receive signals; if the KBZ1 is in a closed state, only one external detection switch Ka1 is connected in parallel and is controlled to be closed, and whether the KBZ1 is on or off or not is judged, and the main control board can receive a positive voltage signal; if the KBZ2 is in the off state, only one external detection switch Kb2 needs to be connected in series and the external detection switch is controlled to be turned off, and no matter whether the KBZ2 is on or off, the main control board can not receive signals; if the KBZ2 is in a closed state, only one external detection switch Ka2 is connected in parallel and is controlled to be closed, and no matter whether the KBZ2 is on or off, the main control board can receive a positive voltage signal;
wherein the brake opening failure types during elevator operation include: an open failure of the brake, an open failure of the brake II, and a simultaneous open failure of the brake I and the brake II;
when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the brake fails to be opened, the setting states of the external detection switches are Ka1, ka2 and Kb1 are opened and Kb2 is closed; when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the second brake fails to be opened, the setting states of the external detection switches are Ka1, ka2 and Kb2 are opened and Kb1 is closed; when the wiring form is normally open independent signal wiring, and the type of fault to be simulated is that the first brake and the second brake are opened simultaneously and fail, the setting states of the external detection switches are Ka1, ka2, kb1 and Kb2 are all disconnected; the detection system presets the on-off states of four external detection switches through an external test line, immediately and suddenly stops when the elevator is started, and simultaneously reports faults, so that the brake fault protection function aiming at the fault type is effective, and if the elevator still operates normally, the brake fault protection function aiming at the fault type is ineffective; aiming at three brake opening fault types, performing a test according to the above process;
when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the brake fails to be opened, the setting states of the external detection switches are Ka1, kb1 and Kb2 closed and Ka2 opened; when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the second brake fails to be opened, the setting states of the external detection switches are Ka2, kb1 and Kb2 closed and Ka1 opened; when the wiring form is normally closed independent signal wiring and the type of faults to be simulated is that the first brake and the second brake are opened simultaneously and fail, the setting states of the external detection switches are Ka1, ka2, kb1 and Kb 2; the detection system presets the on-off states of four external detection switches through an external test line, immediately and suddenly stops when the elevator is started, and simultaneously reports faults, so that the brake fault protection function aiming at the fault type is effective, and if the elevator still operates normally, the brake fault protection function aiming at the fault type is ineffective; aiming at three brake opening fault types, performing a test according to the above process;
wherein, the brake switching-on fault type when elevator operates includes: the brake I fails to close, the brake II fails to close, and the brake I and the brake II fail to close simultaneously;
when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the brake-on fails, the setting states of the external detection switches are Ka1, kb1 and Kb2 closed and Ka2 opened; when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the two-way brake fails, the setting states of the external detection switch are Ka2, kb1 and Kb2 closed and Ka1 opened; when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the brake I and the brake II are closed simultaneously and fail, the setting states of the external detection switches are Ka1 and Ka2 closed and Kb1 and Kb2 open; the normal operation of the elevator is controlled, the on-off state of the external detection switch is preset for fault state in the operation process of the elevator, the elevator is operated to stop, if the elevator stops, the fault is immediately reported and the elevator cannot be restarted, the brake fault protection function aiming at the fault type is effective, if the elevator stops, the fault is not reported and the elevator can be restarted normally, and the brake fault protection function aiming at the fault type is invalid; aiming at three brake closing fault types, performing a test according to the processes;
when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the brake-on fails, the setting states of the external detection switches are Ka1, ka2 and Kb1 are opened and Kb2 is closed; when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the two-way brake fails, the setting states of the external detection switches are Ka1, ka2 and Kb2 are opened and Kb1 is closed; when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the brake I and the brake II are switched on simultaneously and fail, the setting states of the external detection switches are Ka1, ka2, kb1 and Kb2 are all switched off; the normal operation of the elevator is controlled, the on-off state of the external detection switch is preset for fault state in the operation process of the elevator, the elevator is operated to stop, if the elevator stops, the fault is immediately reported and the elevator cannot be restarted, the brake fault protection function aiming at the fault type is effective, if the elevator stops, the fault is not reported and the elevator can be restarted normally, and the brake fault protection function aiming at the fault type is invalid; and aiming at three brake closing fault types, performing a test according to the process.
2. An elevator brake failsafe function detection system, comprising: the device comprises a processor, a switch on-off control module, a loop on-off detection module and a touch control screen, wherein the switch on-off control module, the loop on-off detection module and the touch control screen are connected with the processor; the switch on-off control module is used for controlling the on-off of the four external detection switches Ka1, kb1, ka2 and Kb2 so as to simulate different brake fault signals to the elevator main control panel; the loop on-off detection module is used for detecting the on-off of a traction host power loop so as to judge whether the elevator triggers the fault protection of the brake after receiving a fault signal; the touch control screen is used for realizing man-machine interaction between the equipment and an operator, and controlling the processor in a WiFi or Bluetooth mode;
if the KBZ1 is in the off state, only one external detection switch Kb1 needs to be connected in series and the external detection switch is controlled to be turned off, and no matter whether the KBZ1 is on or off, the main control board can not receive signals; if the KBZ1 is in a closed state, only one external detection switch Ka1 is connected in parallel and is controlled to be closed, and whether the KBZ1 is on or off or not is judged, and the main control board can receive a positive voltage signal; if the KBZ2 is in the off state, only one external detection switch Kb2 needs to be connected in series and the external detection switch is controlled to be turned off, and no matter whether the KBZ2 is on or off, the main control board can not receive signals; if the KBZ2 is in a closed state, only one external detection switch Ka2 is connected in parallel and is controlled to be closed, and no matter whether the KBZ2 is on or off, the main control board can receive a positive voltage signal;
wherein the brake opening failure types during elevator operation include: an open failure of the brake, an open failure of the brake II, and a simultaneous open failure of the brake I and the brake II;
when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the brake fails to be opened, the setting states of the external detection switches are Ka1, ka2 and Kb1 are opened and Kb2 is closed; when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the second brake fails to be opened, the setting states of the external detection switches are Ka1, ka2 and Kb2 are opened and Kb1 is closed; when the wiring form is normally open independent signal wiring, and the type of fault to be simulated is that the first brake and the second brake are opened simultaneously and fail, the setting states of the external detection switches are Ka1, ka2, kb1 and Kb2 are all disconnected; the detection system presets the on-off states of four external detection switches through an external test line, immediately and suddenly stops when the elevator is started, and simultaneously reports faults, so that the brake fault protection function aiming at the fault type is effective, and if the elevator still operates normally, the brake fault protection function aiming at the fault type is ineffective; aiming at three brake opening fault types, performing a test according to the above process;
when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the brake fails to be opened, the setting states of the external detection switches are Ka1, kb1 and Kb2 closed and Ka2 opened; when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the second brake fails to be opened, the setting states of the external detection switches are Ka2, kb1 and Kb2 closed and Ka1 opened; when the wiring form is normally closed independent signal wiring and the type of faults to be simulated is that the first brake and the second brake are opened simultaneously and fail, the setting states of the external detection switches are Ka1, ka2, kb1 and Kb 2; the detection system presets the on-off states of four external detection switches through an external test line, immediately and suddenly stops when the elevator is started, and simultaneously reports faults, so that the brake fault protection function aiming at the fault type is effective, and if the elevator still operates normally, the brake fault protection function aiming at the fault type is ineffective; aiming at three brake opening fault types, performing a test according to the above process;
wherein, the brake switching-on fault type when elevator operates includes: the brake I fails to close, the brake II fails to close, and the brake I and the brake II fail to close simultaneously;
when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the brake-on fails, the setting states of the external detection switches are Ka1, kb1 and Kb2 closed and Ka2 opened; when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the two-way brake fails, the setting states of the external detection switch are Ka2, kb1 and Kb2 closed and Ka1 opened; when the wiring form is normally open independent signal wiring and the type of fault to be simulated is that the brake I and the brake II are closed simultaneously and fail, the setting states of the external detection switches are Ka1 and Ka2 closed and Kb1 and Kb2 open; the normal operation of the elevator is controlled, the on-off state of the external detection switch is preset for fault state in the operation process of the elevator, the elevator is operated to stop, if the elevator stops, the fault is immediately reported and the elevator cannot be restarted, the brake fault protection function aiming at the fault type is effective, if the elevator stops, the fault is not reported and the elevator can be restarted normally, and the brake fault protection function aiming at the fault type is invalid; aiming at three brake closing fault types, performing a test according to the processes;
when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the brake-on fails, the setting states of the external detection switches are Ka1, ka2 and Kb1 are opened and Kb2 is closed; when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the two-way brake fails, the setting states of the external detection switches are Ka1, ka2 and Kb2 are opened and Kb1 is closed; when the wiring form is normally closed independent signal wiring and the type of fault to be simulated is that the brake I and the brake II are switched on simultaneously and fail, the setting states of the external detection switches are Ka1, ka2, kb1 and Kb2 are all switched off; the normal operation of the elevator is controlled, the on-off state of the external detection switch is preset for fault state in the operation process of the elevator, the elevator is operated to stop, if the elevator stops, the fault is immediately reported and the elevator cannot be restarted, the brake fault protection function aiming at the fault type is effective, if the elevator stops, the fault is not reported and the elevator can be restarted normally, and the brake fault protection function aiming at the fault type is invalid; and aiming at three brake closing fault types, performing a test according to the process.
3. The elevator brake fault protection function detection system according to claim 2, wherein the loop on-off detection module adopts an electromagnetic induction on-off detection switch to realize non-contact detection of whether current passes through a detected circuit;
when the current in the tested circuit passes or not, the electromagnetic induction on-off detection switch outputs switching values in different states to the processor, and the processor judges the running state of the elevator according to the received state of the switching values.
4. The elevator brake failsafe function detection system of claim 2, wherein the processor is a single-chip microcomputer or a PLC.
CN202111056045.7A 2021-09-09 2021-09-09 Elevator brake fault protection function detection method and detection system Active CN114104893B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111056045.7A CN114104893B (en) 2021-09-09 2021-09-09 Elevator brake fault protection function detection method and detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111056045.7A CN114104893B (en) 2021-09-09 2021-09-09 Elevator brake fault protection function detection method and detection system

Publications (2)

Publication Number Publication Date
CN114104893A CN114104893A (en) 2022-03-01
CN114104893B true CN114104893B (en) 2023-06-23

Family

ID=80441331

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111056045.7A Active CN114104893B (en) 2021-09-09 2021-09-09 Elevator brake fault protection function detection method and detection system

Country Status (1)

Country Link
CN (1) CN114104893B (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2807837B2 (en) * 1989-12-01 1998-10-08 日清紡績株式会社 Failure detection circuit of anti-skid control device
CN1128092C (en) * 1997-11-24 2003-11-19 顺德市佳顺微机控制设备有限公司 Automatic online detection helping method for elevator faults
JP4508246B2 (en) * 2008-02-21 2010-07-21 株式会社デンソーウェーブ Robot electromagnetic brake control device and robot electromagnetic brake abnormality determination method
KR101500141B1 (en) * 2013-09-12 2015-03-09 현대자동차주식회사 Method and apparatus for detecting disconnection of 3-phase cable
CN208869114U (en) * 2018-08-16 2019-05-17 西继迅达（许昌）电梯有限公司 A kind of accidental movement of elevator cage detection braking circuit
CN210133786U (en) * 2019-05-23 2020-03-10 尹泽成 Portable elevator protection switch and safety loop state detection device

Also Published As

Publication number Publication date
CN114104893A (en) 2022-03-01

Similar Documents

Publication Publication Date Title
CN108394775B (en) Elevator safety system and safety control method
JPWO2015079976A1 (en) Elevator safety system
CN110884972B (en) Door lock detection method based on elevator safety loop
WO2011056696A2 (en) Fault monitoring system for electric single or poly-phase chain hoist motors
WO2009107218A1 (en) Elevator system
JP6207961B2 (en) Elevator safety system
JP2012082059A (en) Electronic safety elevator
CN203833408U (en) Automatic detection device for brake of traction machine
CN106882666A (en) Elevator emergency voice activated control and method
CN107654545B (en) Elevator host machine brake shoe abrasion detection device and detection method
CN210714273U (en) Subway shielded door monitoring devices
CN114104893B (en) Elevator brake fault protection function detection method and detection system
CN112141166B (en) Motor train unit safety loop bypass system
CN108773742A (en) Method for security protection, electric life controller and elevator device is driven by force
CN110526064B (en) Function testing device for elevator car accidental movement protection system
CN209777994U (en) Remote testing device for machine-room-less brake
CN102712444A (en) Elevator device
CN113460824A (en) Elevator safety loop fault detection system, method, equipment and storage medium
KR20120042991A (en) Safety device for elevator
WO2015151256A1 (en) Elevator control device
CN205527120U (en) Elevator safety real -time monitoring system
CN201567181U (en) Crane hoisting brake system control protector
CN102378731B (en) Elevator device
CN206970038U (en) The overhead traveling crane accident warning device that position occurs for failure can be reported automatically
CN113772507B (en) Method for detecting wiring form of fault protection switch of elevator brake

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant