CN111532917B - Detection method, tester and detection system for accidental movement protection device of elevator car - Google Patents
Detection method, tester and detection system for accidental movement protection device of elevator car Download PDFInfo
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- CN111532917B CN111532917B CN202010236687.4A CN202010236687A CN111532917B CN 111532917 B CN111532917 B CN 111532917B CN 202010236687 A CN202010236687 A CN 202010236687A CN 111532917 B CN111532917 B CN 111532917B
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- accidental movement
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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
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
- B66B5/0093—Testing of safety devices
Abstract
The invention provides a detection method, a tester and a detection system for an accidental movement protection device of an elevator car, wherein the method comprises the following steps: controlling the brake to be electrified according to the electrifying command; judging whether the signal acquisition circuit for the accidental movement of the lift car receives a trigger signal; if so, controlling the brake to be powered off, synchronously acquiring the moving direction, the moving distance and the braking deceleration measured by the speed measuring sensor in the elevator braking process, measuring the relative position of the elevator car in the hoistway after the elevator is braked, and judging whether the moving distance and the braking deceleration meet the requirements of GB 7588-2003; if not, controlling the brake to be powered off according to the power-off instruction, and judging that the protection device for accidental movement of the elevator car fails. According to the invention, the functional effectiveness and the linkage reliability of the UCMP detection subsystem and the braking subsystem are directly verified through the acquisition of the trigger signal by the car accidental movement signal acquisition circuit, so that the problem of misjudgment of a detection conclusion possibly caused by the inconsistency of the structural parameters of the sample elevator and the detected elevator is avoided, and the verification reliability is improved.
Description
Technical Field
The invention relates to the field of elevator detection, in particular to a detection method, a tester and a detection system of an accidental movement protection device of an elevator car.
Background
GB7588-2003 first modified list was officially implemented in 2017, 6/1, and all newly manufactured elevators were required to be equipped with UCMP (universal car movement protection system) since the date of implementation. When the elevator is supervised and inspected after being installed, including daily maintenance and annual inspection after being put into use, the functions of the UCMP are required to be tested and verified.
At present, elevator inspection institutions in China all adopt an inspection method for directly carrying out test verification on UCMP braking subsystems. The method only verifies the braking performance of the UCMP braking subsystem, but cannot verify the effectiveness of the UCMP detecting subsystem and the linkage reliability between the detecting subsystem and the braking subsystem. Meanwhile, the checking method only for verifying the braking subsystem requires that the elevator runs at the test speed marked on the sample ladder type test certificate before the elevator test, and the braking distance after the braking part is triggered must be compared with the maximum allowable moving distance marked on the sample ladder type test certificate, so that the checking method is a method for indirectly verifying whether the national standard requirement is met or not instead of directly verifying. When the test is carried out according to the method, the test speed marked on the sample ladder type test certificate can not be matched with the tested elevator, so that the test can not be carried out. In addition, the structural size of the sample ladder may not be consistent with that of the elevator to be detected, and the measured stopping distance may meet the requirements of a type test certificate but cannot meet the requirements of the GB7588-2003 standard.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a detection method, a tester and a detection system of an accidental movement protection device of an elevator car, wherein the tester controls the brake to be powered on and powered off, so that the situation of the elevator car when the elevator car actually moves accidentally can be simulated, whether the UCMP device can act automatically is detected, the braking performance of the braking subsystem of the UCMP device of the elevator is directly detected, the acquisition of a trigger signal of the detection subsystem of the UCMP device of the elevator is performed by a car movement signal acquisition circuit of the tester, the functional effectiveness and the linkage reliability of the UCMP detection subsystem and the braking subsystem are directly verified, the problem that the braking performance of the braking subsystem of the UCMP device of the elevator is only detected in the general detection method of the accidental movement protection device of the elevator car is solved, the effectiveness of the detection subsystem and the linkage reliability between the detection subsystem and the braking subsystem is not verified is solved, meanwhile, the problem that the detection conclusion is indirectly judged by comparing the accidental movement braking distance of the elevator with the detected ladder type test data of the elevator is avoided, and the problem that the structural parameters of the elevator are possibly inconsistent is solved, and the reliability of the verification is improved.
In order to solve the above problems, the present invention adopts a technical solution as follows: a detection method for an accidental movement protection device of an elevator car comprises the following steps that the elevator car has the functions of leveling, re-leveling and preparation operation under the condition of opening a door, a tester is connected with a brake, the brake is disconnected with an original control circuit, a car accidental movement signal acquisition circuit of the tester is connected with a signal input circuit of an upper re-leveling door area of the elevator car, and the detection method comprises the following steps: s101: receiving an input electrifying command, and controlling the brake to be electrified according to the electrifying command; s102: judging whether the signal acquisition circuit for the accidental movement of the lift car receives a trigger signal, if so, executing S103, and if not, executing S104; s103: controlling the brake to be powered off, synchronously acquiring the moving direction, the moving distance and the braking deceleration measured by the speed measuring sensor by the tester in the braking and stopping process of the elevator, measuring the relative position of the elevator car in the hoistway after the elevator is braked and judging whether the moving distance and the braking deceleration meet the requirements of GB 7588-2003; s104: and receiving an input power-off command, controlling the brake to be powered off according to the power-off command, and determining that the protection device for the accidental movement of the elevator car fails.
Further, the tester is connected with the stopper, and disconnection of the stopper and the original control circuit specifically includes: the original control circuit of the brake is disconnected, and the control circuit containing the independent power supply in the tester is connected with the input power supply terminal of the brake.
Further, the tester is connected with the stopper, and disconnection of the stopper and the original control circuit specifically includes: the original control circuit of the brake is disconnected, the output end of the brake control loop of the tester is connected with the input power supply wiring terminal of the brake, and the input end of the brake control loop is connected with the power supply in the brake wiring box.
Furthermore, the speed measuring sensor is arranged on the steel wire rope side of the traction driving main machine or the steel wire rope side of the speed limiter of the elevator.
Further, the unexpected signal acquisition circuit that removes of car of tester and the last leveling door zone signal input circuit connection of going up of elevator car specifically include: two wires of the signal acquisition circuit for the accidental movement of the car are respectively connected with two wiring terminals of the signal input circuit of the upper releveling door area.
Based on the same inventive concept, the invention also provides a tester, the tester is used for detecting the elevator car accidental movement protection device, the elevator car has the functions of leveling, releveling and preparatory operation under the condition of opening the door, the tester is connected with the brake, the brake is disconnected from the original control circuit, the car accidental movement signal acquisition circuit of the tester is connected with the signal input circuit of the upper releveling door area of the elevator car, and the tester executes the following detection method: s201: receiving an input electrifying command, and controlling the brake to be electrified according to the electrifying command; s202: judging whether the signal acquisition circuit for the accidental movement of the car receives a trigger signal, if so, executing S203, and if not, executing S204; s203: controlling the brake to be powered off, synchronously acquiring the moving direction, the moving distance and the braking deceleration measured by the speed measuring sensor by the tester in the braking and stopping process of the elevator, measuring the relative position of the elevator car in the well after the elevator is stopped, and judging whether the moving distance and the braking deceleration meet the requirements of GB 7588-2003; s204: and receiving an input power-off command, controlling the brake to be powered off according to the power-off command, and determining that the elevator car accidental movement protection device fails.
Further, the tester is connected with the brake, and the disconnection of the brake and the original control circuit specifically comprises: the original control circuit of the brake is disconnected, and the control circuit containing the independent power supply in the tester is connected with the input power supply terminal of the brake.
Further, the tester is connected with the stopper, and disconnection of the stopper and the original control circuit specifically includes: the original control circuit of the brake is disconnected, the output end of the brake control loop of the tester is connected with the input power supply wiring terminal of the brake, and the input end of the brake control loop is connected with the power supply in the brake wiring box.
Furthermore, the speed measuring sensor is arranged on the steel wire rope side of the traction driving main machine or the steel wire rope side of the speed limiter of the elevator.
Based on the same inventive concept, the application further provides a detection system, the detection system is used for detecting the protection device for the accidental movement of the elevator car, and the detection system is characterized in that the elevator car has the functions of leveling, re-leveling and preparatory operation under the condition of opening a door, the detection system comprises a tester and a speed measurement sensor, and the tester is the tester.
Compared with the prior art, the invention has the beneficial effects that: the tester controls the power-on and power-off of the brake, and can simulate the situation when the elevator car actually moves accidentally, so as to detect whether the UCMP device can automatically act, realize the direct detection of the braking and stopping performance of the braking and stopping subsystem of the elevator UCMP device, directly verify the functional validity and linkage reliability of the UCMP device and the braking and stopping subsystem through the acquisition of the trigger signal of the UCMP device detection subsystem of the elevator UCMP device by the signal acquisition circuit, solve the defects that the braking and stopping performance of the braking and stopping subsystem is only detected in the current general detection method for the elevator car accidental movement protection device, the validity of the detection subsystem and the linkage reliability between the detection subsystem and the braking and stopping subsystem are not verified, simultaneously, indirectly judge the detection conclusion without adopting a method of comparing the accidental movement and stopping distance of the detected elevator with the sample ladder type test data, avoid the problem of wrong detection conclusion possibly caused by the inconsistency of the structural parameters of the sample ladder and the detected elevator, and improve the reliability of the verification.
Drawings
Fig. 1 is a flow chart of an embodiment of the method for detecting the accidental movement protection device of the elevator car;
FIG. 2 is a block diagram of one embodiment of the test meter of the present invention;
FIG. 3 is a flow chart of one embodiment of a test method performed by the test meter of the present invention;
FIG. 4 is a block diagram of one embodiment of a detection system of the present invention;
FIG. 5 is a flowchart of an exemplary detection method performed by the detection system of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Referring to fig. 1, fig. 1 is a flowchart illustrating an embodiment of a method for detecting an accidental movement protection device of an elevator car according to the present invention. The method for detecting the accidental movement protection device of the elevator car is described in detail with reference to the attached drawing 1.
In this embodiment, the method for detecting the accidental movement protection device of the elevator car comprises the following steps:
s101: and receiving an input electrifying command, and controlling the brake to be electrified according to the electrifying command.
In this embodiment, the elevator car has leveling, re-leveling and preparatory operation functions when the door is opened. The brake is a synchronous main engine brake.
In this embodiment, the tester includes control circuit, the unexpected signal acquisition circuit that removes of car, and control circuit includes independent power supply and stopper control circuit, and the unexpected signal acquisition circuit that removes of car is connected with control circuit. The tester is connected with the brake, the brake is controlled to be powered on and powered off through the tester, the brake is disconnected with the original control circuit, and the car accidental movement signal acquisition circuit of the tester is connected with the upper leveling door area signal input circuit of the elevator car.
In a specific embodiment, the connection between the tester and the brake, and the disconnection between the brake and the original control circuit specifically includes: the original control circuit of the brake is disconnected, the control circuit comprising the independent power supply in the tester is connected with the input power supply terminal of the brake, and the type and the voltage value of the independent power supply are consistent with those of the original power supply of the brake. The tester of the brake and the original power supply circuit are replaced by the control circuit of the tester.
In another specific embodiment, the connection between the tester and the brake, and the disconnection between the brake and the original control circuit specifically includes: the original control circuit of the brake is disconnected, the output end of the brake control loop of the tester is connected with the input power supply wiring terminal of the brake, and the input end of the brake control loop is connected with the power supply in the brake wiring box. The original control circuit of the alternative brake is controlled by the brake control loop of the tester, so that the purpose of controlling the brake to be switched on or off by the tester is achieved.
In this embodiment, the unexpected signal acquisition circuit that removes of car of tester and the last average landing door district signal input circuit connection of going up of elevator car specifically includes: two wires of the signal acquisition circuit for the accidental movement of the car are respectively connected with two wiring terminals of the signal input circuit of the upper releveling door area. And the signal acquisition circuit is used for receiving the electric signal in the upper re-flat gate area signal input circuit.
In this embodiment, in order to protect the tester and ensure the validity of the detection, the elevator is unloaded before the detection, stops at a certain floor, cancels the internal and external calling functions, and disconnects the main power supply of the elevator. The tester is connected with the brake, and after the signal acquisition circuit for accidental movement of the lift car is connected with the signal input circuit of the upper re-landing area, the main power supply of the lift is switched on, so that the protection device for accidental movement of the lift car of the lift is detected.
S102: and judging whether the signal acquisition circuit for the accidental movement of the car receives the trigger signal, if so, executing S103, and if not, executing S104.
In this embodiment, triggering signal is the signal that loses electricity, and the tester removes the signal acquisition circuit according to the car accident and detects the signal control stopper outage that loses electricity, triggers the stopper band-type brake to make the elevator stop.
When the brake is powered on, the brake is released, the elevator car moves upwards, and when the upper door zone sensor on the car detects that the car leaves a door zone, the upper re-leveling door zone signal input circuit is disconnected, so that the tester car accidentally moving signal acquisition circuit connected in the upper re-leveling door zone signal input circuit loses power to generate a trigger signal.
S103: and controlling a brake to be powered off, synchronously acquiring the unexpected moving direction, moving distance and braking deceleration of the car measured by the speed measuring sensor in the braking and stopping process of the elevator, measuring the relative position of the car in the hoistway after the elevator is braked and judging whether the moving distance and the braking deceleration meet the requirements of GB 7588-2003.
In this embodiment, the tester includes auxiliary relay, and auxiliary relay is connected with the unexpected control circuit who removes signal acquisition circuit, controller respectively of car, and the unexpected signal acquisition circuit that removes of car loses the electricity and produces trigger signal, and this trigger signal control auxiliary relay contact disconnection, and then makes the disconnection of stopper control circuit through this contact disconnection, and the stopper cuts off the power supply to make the elevator system stop.
In other embodiments, the tester may also include a processor, the processor is connected to the elevator UCMP detection subsystem and the brake control circuit, and the processor controls the independent power supply to be disconnected from the brake control circuit or to disconnect the brake control circuit after receiving the trigger signal transmitted by the detection subsystem, so as to cut off the power of the brake.
In this embodiment, the speed sensor is provided on the hoisting drive machine wire rope side or the governor wire rope side of the elevator. The speed measuring sensor is connected with the tester through a data line, and in the elevator braking process, the tester synchronously obtains the unexpected moving direction, moving distance and braking deceleration of the lift car measured by the speed measuring sensor. And after the elevator stops, measuring the relative position of the car in the hoistway, and judging whether the moving distance and the stopping deceleration meet the requirements of GB 7588-2003.
In other embodiments, the speed measuring sensor can also be connected with the tester in a wireless communication mode such as WiFi, bluetooth, NB-IOT communication and the like.
S104: and receiving an input power-off command, controlling the brake to be powered off according to the power-off command, and determining that the protection device for the accidental movement of the elevator car fails.
In this embodiment, the elevator removes the back, and the tester does not receive the unexpected trigger signal who removes signal acquisition circuit transmission of car, does not control the tester outage. In order to stop the elevator, a power-off command is input to the tester, and the tester disconnects the control circuit or the brake stopping loop according to the power-off command to stop the brake.
In other embodiments, the tester may also control the brake to be powered on, and then determine whether the trigger signal transmitted by the signal acquisition circuit is received within a preset time, and if the trigger signal is not received, control the brake to be powered off. The preset time can be set according to actual conditions, and the preset time is only longer than the time when the elevator car reaches the maximum accidental movement distance required by GB7588 when the acceleration of the accidental movement is maximum.
The following further describes the detection method of the elevator car accidental movement protection device through the flow of the elevator car actual test.
1 preparation before testing. The elevator stops at a proper floor at the upper part of the shaft, the lift car is in no-load, the lift car door of the floor is closed, and the internal and external calling functions of the elevator are cancelled.
2 the original control loop of the elevator brake is replaced by the brake control loop equipped by the tester. The brake power supply and the control loop are completely replaced by the tester, and only the brake control loop is replaced by the tester.
2.1 the connection mode of the brake power supply and the control loop is replaced by the tester: the input power supply control circuit of the brake is removed from the junction box of the elevator brake, and the control circuit which is provided by the tester and supplied by the independent power supply with the same type and voltage value as the power supply of the elevator brake is connected to the input power supply wiring terminal of the brake, so that the power supply and the original control circuit of the brake are completely replaced by the tester.
2.2 only the original control circuit is connected by the wiring mode replaced by the tester: two wiring terminals of an original control circuit for supplying power to the brake are detached from a switch power supply box for supplying power to the brake in the elevator control cabinet, the head end of a brake control loop equipped with the tester is connected with the two wiring terminals, and the tail end of the brake control loop is connected with two terminals of an input power supply wiring terminal in the brake wiring box, so that the brake control loop is replaced by the tester.
3 two wiring terminals of a signal input circuit of the upper re-leveling door zone are found on a UCMP circuit board in the elevator control cabinet, and two leads of a signal acquisition circuit for the accidental movement of the lift car equipped by the tester are respectively connected with the two wiring terminals. And the car accidental movement signal acquisition circuit of the tester carries out interlocking control on a brake control circuit of the tester through the intermediate relay contact.
4, the speed measuring sensor is arranged at a proper position beside the elevator main machine, so that the speed measuring roller is tightly attached to the traction steel wire rope or the speed limiter steel wire rope. The sensor is connected with a sensor interface on the testing instrument through a data line (or data transmission is realized through Bluetooth), so that the measurement of the moving distance of the car and braking deceleration is realized.
5 operating a brake circuit power supply button switch of the detecting instrument to electrify and release the elevator brake, and utilizing the extreme state with the maximum gravity difference at the two sides of the traction sheave to ensure that the lift car moves upwards accidentally.
6 when the upper door zone sensor on the lift car detects that the lift car leaves a door zone, the upper leveling door zone input circuit is disconnected, so that the lift car accidental movement signal acquisition circuit connected in the signal input circuit of the upper leveling door zone of the lift is powered off, the brake control circuit is disconnected through the intermediate relay contact, the brake is triggered, and the lift is braked.
And 7, automatically acquiring and calculating the unexpected moving direction, the moving distance and the braking and stopping deceleration of the car by a speed measuring sensor.
And 8, measuring the relative position of the car in the hoistway, and judging whether the moving distance and the braking deceleration meet the requirements of GB 7588.
The invention utilizes the extreme condition that the acceleration of the accidental movement of the lift car is the largest and the accidental movement distance is the longest when the lift car of the lift to be detected is unloaded and the brake is opened to simulate the truest accidental movement scene, directly verifies whether the UCMP detection subsystem reliably detects the accidental movement of the lift car and triggers the braking subsystem, whether the braking subsystem acts in time after being triggered and enables the lift car to stop moving within the range not exceeding the movement distance specified in the modification list No. GB 7588-2003. The method is the most accurate, reliable and objective method for detecting whether the UCMP function of the elevator meets the standard requirement.
Has the beneficial effects that: the detection method of the elevator car accidental movement protection device can simulate the situation when the elevator car actually moves accidentally by controlling the power-on and the power-off of the brake through the tester, thereby detecting whether the UCMP device can automatically act, realizing the direct detection of the braking performance of the UCMP device braking subsystem, directly verifying the functional validity and the linkage reliability of the UCMP detection subsystem and the braking subsystem through the acquisition of the trigger signal of the UCMP device detection subsystem through the tester car accidental movement signal acquisition circuit, avoiding the problem of erroneous judgment of the detection conclusion possibly caused by the inconsistency of the structural parameters of the elevator to be detected by indirectly judging the detection conclusion through the method of comparing the detected elevator detection data with the sample ladder type test data at present, and improving the reliability of the verification.
Based on the same inventive concept, the invention further provides a tester, please refer to fig. 2 and 3, fig. 2 is a structural diagram of an embodiment of the tester of the invention; fig. 3 is a flowchart of an embodiment of a detection method executed by the tester of the present invention, and the tester of the present invention is specifically described with reference to fig. 2 and 3.
In this embodiment, the elevator car has the functions of leveling, releveling and preliminary operation under the condition of opening the door, the tester is connected with the brake, the brake is disconnected from the original control circuit, the car accidental movement signal acquisition circuit of the tester is connected with the signal input circuit of the upper releveling door area of the elevator car, and the tester executes the following detection method:
s201: and receiving an input electrifying command, and controlling the brake to be electrified according to the electrifying command.
In this embodiment, the brake is a synchronous master brake.
In this embodiment, the tester includes control circuit, the unexpected signal acquisition circuit that removes of car, and control circuit includes independent power supply and stopper control circuit, and the unexpected signal acquisition circuit that removes of car is connected with control circuit. The tester is connected with the brake, the brake is controlled to be powered on and powered off through the tester, the brake is disconnected with the original control circuit, and the car accidental movement signal acquisition circuit of the tester is connected with the upper leveling door area signal input circuit of the elevator car.
In a specific embodiment, the connection between the tester and the brake, and the disconnection between the brake and the original control circuit specifically includes: the original control circuit of the brake is disconnected, the control circuit comprising an independent power supply in the tester is connected with the input power supply terminal of the brake, and the type and the voltage value of the independent power supply are consistent with those of the original power supply of the brake. The tester of the brake and the original power supply circuit are replaced by the control circuit of the tester.
In another specific embodiment, the connecting the tester and the brake, and the disconnecting the brake from the original control circuit specifically includes: the original control circuit of the brake is disconnected, the output end of the brake control loop of the tester is connected with the input power supply wiring terminal of the brake, and the input end of the brake control loop is connected with the power supply in the brake wiring box. The original control circuit of the brake is replaced by the brake control loop control of the tester, so that the purpose of controlling the brake to be switched on or switched off by the tester is achieved.
In this embodiment, the unexpected signal acquisition circuit that removes of car of tester and the last average landing door district signal input circuit connection of going up of elevator car specifically includes: two wires of the signal acquisition circuit for the accidental movement of the car are respectively connected with two wiring terminals of the signal input circuit of the upper releveling door area. And receiving the electric signal in the upper leveling door area signal input circuit through the signal acquisition circuit.
In this embodiment, in order to protect the tester and ensure the validity of the detection, the elevator is unloaded, stops at a certain floor, cancels the internal and external calling functions, and disconnects the main power supply of the elevator before the detection is performed. The tester is connected with the brake, and after the signal acquisition circuit for the accidental movement of the lift car is connected with the signal input circuit of the upper landing door area of the lift, the main power supply of the lift is switched on, so that the protection device for the accidental movement of the lift car of the lift is detected.
S202: and judging whether the signal acquisition circuit for the accidental movement of the car receives the trigger signal, if so, executing S203, and if not, executing S204.
In this embodiment, triggering signal is the signal that loses electricity, and the tester removes the signal acquisition circuit according to the car accident and detects the signal control stopper outage that loses electricity, triggers the stopper band-type brake to make the elevator stop.
When the brake is powered on, the brake is released, the elevator car moves upwards, and when the upper door zone sensor on the car detects that the car leaves a door zone, the upper re-leveling door zone signal input circuit is disconnected, so that the tester car accidentally moving signal acquisition circuit connected in the upper re-leveling door zone signal input circuit loses power to generate a trigger signal.
S203: and controlling a brake to be powered off, synchronously acquiring the unexpected moving direction, moving distance and braking deceleration of the car measured by the speed measuring sensor in the braking and stopping process of the elevator, measuring the relative position of the car in the hoistway after the elevator is braked and judging whether the moving distance and the braking deceleration meet the requirements of GB 7588-2003.
In this embodiment, the tester includes auxiliary relay, and auxiliary relay is connected with the unexpected signal acquisition circuit that removes of car, the stopper control circuit of controller respectively, and the unexpected signal acquisition circuit that removes of car loses the electricity and produces trigger signal, and this trigger signal control auxiliary relay contact disconnection, and then makes stopper control circuit disconnection, stopper outage through the disconnection operation of this contact to make the elevator stop.
In other embodiments, the tester can also comprise a processor, the processor is connected with the elevator UCMP detection subsystem and the brake control circuit, and after the processor receives the trigger signal transmitted by the signal acquisition circuit for the accidental movement of the car, the processor controls the independent power supply to be disconnected with the brake control circuit or disconnects the brake control circuit, so that the brake is powered off.
In this embodiment, the speed sensor is provided on the traction drive machine wire rope side or the governor wire rope side of the elevator. The speed measuring sensor is connected with the tester through a data line, and in the elevator braking process, the tester synchronously obtains the unexpected moving direction, moving distance and braking deceleration of the lift car measured by the speed measuring sensor. After the elevator stops, the relative position of the elevator car in the hoistway is measured, and whether the moving distance and the stopping deceleration meet the requirements of GB7588-2003 is judged.
In other embodiments, the speed measuring sensor can also be connected with the tester in a wireless communication mode such as WiFi, bluetooth, NB-IOT communication and the like.
S204: and receiving an input power-off command, controlling the brake to be powered off according to the power-off command, and determining that the protection device for the accidental movement of the elevator car fails.
In this embodiment, the elevator removes the back, and the tester does not receive the unexpected trigger signal who removes signal acquisition circuit transmission of car, does not control the tester outage. In order to stop the elevator, a power-off command is input to the tester, and the tester disconnects the control circuit or the brake stopping loop according to the power-off command to stop the brake.
In other embodiments, the tester can also control the brake to be electrified, then judges whether the trigger signal transmitted by the signal acquisition circuit for the unexpected movement of the car is received within a preset time, and controls the brake to be powered off if the trigger signal is not received. The preset time can be set according to actual conditions, and the preset time is only longer than the time when the elevator car reaches the maximum accidental movement distance required by GB7588 when the acceleration of the accidental movement is maximum.
The following further describes the detection method of the elevator car accidental movement protection device through the flow of the elevator car actual test.
1 preparation before testing. The elevator stops at a proper floor at the upper part of the shaft, the lift car is in no-load, the lift car door of the floor is closed, and the internal and external calling functions of the elevator are cancelled.
2, a brake control loop equipped by the tester is used for replacing an original control loop of the elevator brake. The brake power supply and the control loop are completely replaced by the tester, and only the brake control loop is replaced by the tester.
2.1 connection mode in which the brake power supply and control loop are all replaced by the tester: the input power supply control circuit of the brake is removed from the junction box of the elevator brake, and the control circuit which is provided by the tester and supplied by the independent power supply with the same type and voltage value as the power supply of the elevator brake is connected to the input power supply wiring terminal of the brake, so that the power supply and the original control circuit of the brake are completely replaced by the tester.
2.2 only the original control circuit is connected by the wiring mode replaced by the tester: two wiring terminals of an original control circuit for supplying power to the brake are detached from a switch power supply box for supplying power to the brake in the elevator control cabinet, the head end of a brake control loop equipped by the tester is connected with the two wiring terminals, and the tail end of the brake control loop is connected with two terminals of an input power supply wiring terminal in the brake wiring box, so that the brake control loop is replaced by the tester.
3 two wiring terminals of a signal input circuit of the upper re-leveling door zone are found on a UCMP circuit board in the elevator control cabinet, and two leads of a signal acquisition circuit for the accidental movement of the lift car equipped by the tester are respectively connected with the two wiring terminals. And the car accidental movement signal acquisition circuit of the tester carries out interlocking control on a brake control circuit of the tester through the intermediate relay contact.
4, the speed measuring sensor is arranged at a proper position beside the elevator main machine, so that the speed measuring roller is tightly attached to the traction steel wire rope or the speed limiter steel wire rope. The sensor is connected with a sensor interface on the testing instrument through a data line (or data transmission is realized through Bluetooth), so that the measurement of the moving direction, the moving distance and the braking deceleration of the car is realized.
5 operating a brake circuit power supply button switch of the detecting instrument to electrify and release the elevator brake, and utilizing the extreme state with the maximum gravity difference at the two sides of the traction sheave to ensure that the lift car moves upwards accidentally.
And 6, when the upper door zone sensor on the car detects that the car leaves a door zone, the upper re-leveling door zone signal input circuit is disconnected, so that the tester car accidentally moving signal acquisition circuit connected in series with the upper re-leveling door zone signal input circuit loses power, the brake control circuit is disconnected through the intermediate relay contact, and the brake is triggered to brake and the elevator is stopped.
And 7, automatically acquiring and calculating the unexpected moving direction, the moving distance and the braking and stopping deceleration of the car by using a speed measuring sensor.
And 8, measuring the relative position of the car in the hoistway, and judging whether the moving distance and the braking deceleration meet the requirements of GB 7588.
According to the invention, the most extreme condition that the acceleration of the accidental movement of the lift car is the largest and the accidental movement distance is the longest when the lift car to be detected is unloaded and the brake is opened is utilized, the truest accidental movement scene is simulated, whether the UCMP detection subsystem reliably detects the accidental movement of the lift car and triggers the braking subsystem is directly verified, whether the braking subsystem acts in time after being triggered is directly verified, and the lift car stops moving within the range of not exceeding the specified movement distance in the GB 7588-2003I modification list. The method is the most accurate, reliable and objective method for detecting whether the UCMP function of the elevator meets the standard requirement.
Has the advantages that: the tester controls the brake to be powered on and powered off through the tester, and can simulate the situation when the elevator car actually moves accidentally, so as to detect whether the UCMP device can automatically act, realize the direct detection of the elevator braking subsystem, directly verify the functional validity and the linkage reliability of the UCMP detection subsystem and the braking subsystem through the acquisition of the trigger signal by the elevator car accidental movement signal acquisition circuit, indirectly judge the inspection conclusion without adopting the existing method of comparing the detected elevator detection data with the sample ladder type test data, avoid the problem of misjudgment of the inspection conclusion possibly caused by the inconsistency of the sample ladder and the detected elevator structure parameters, and improve the reliability of the verification.
Based on the same inventive concept, the present invention further provides a detection system, please refer to fig. 4 and 5, fig. 4 is a structural diagram of an embodiment of the detection system of the present invention; fig. 5 is a flowchart of an embodiment of a detection method of the detection system of the present invention, and the tester of the present invention is specifically described with reference to fig. 4 and 5.
In this embodiment, the elevator car has leveling, releveling and preliminary operation functions under the condition of opening the door, the detection system includes a tester and a speed measurement sensor, the tester is connected with the brake, the brake is disconnected from the original control circuit, the car accidental movement signal acquisition circuit of the tester is connected with the signal input circuit of the upper releveling door area of the elevator car, and the tester executes the following detection method:
s301: and controlling the tester to control the brake to be electrified according to the input electrifying command.
In this embodiment, the brake is a synchronous master brake.
In this embodiment, the tester includes stopper control circuit, the unexpected signal acquisition circuit that removes of car, and control circuit includes independent power supply and stopper control circuit, and the unexpected signal acquisition circuit that removes of car is connected with control circuit. The tester is connected with the brake, the tester controls the brake to be powered on and powered off, the brake is disconnected with the original control circuit, and the car accidental movement signal acquisition circuit of the tester is connected with the signal input circuit of the upper landing door area of the elevator car.
In a specific embodiment, the connection between the tester and the brake, and the disconnection between the brake and the original control circuit specifically includes: the original control circuit of the brake is disconnected, the control circuit comprising an independent power supply in the tester is connected with the input power supply terminal of the brake, and the type and the voltage value of the independent power supply are consistent with those of the original power supply of the brake. The tester of the brake and the original power supply circuit are replaced by the control circuit of the tester.
In another specific embodiment, the connecting the tester and the brake, and the disconnecting the brake from the original control circuit specifically includes: the original control circuit of the brake is disconnected, the output end of the brake control loop of the tester is connected with the input power supply wiring terminal of the brake, and the input end of the brake control loop is connected with the power supply in the brake wiring box. The original control circuit of the brake is replaced by the brake control loop control of the tester, so that the purpose of controlling the brake to be switched on or switched off by the tester is achieved.
In this embodiment, the signal acquisition circuit that the car of tester is unexpected to be moved and the last releveling door zone signal input circuit connection of elevator car specifically includes: two wires of the signal acquisition circuit for the accidental movement of the car are respectively connected with two wiring terminals of the signal input circuit of the upper releveling door area. And the signal acquisition circuit is used for receiving the electric signal in the upper re-flat gate area signal input circuit.
In this embodiment, in order to protect the tester and ensure the validity of the detection, the elevator is unloaded before the detection, stops at a certain floor, cancels the internal and external calling functions, and disconnects the main power supply of the elevator. The tester is connected with the brake, and after the signal acquisition circuit for the accidental movement of the elevator car is connected with the signal input circuit of the upper re-sliding door area, the main power supply of the elevator is switched on, so that the protection device for the accidental movement of the elevator car is detected.
S302: and judging whether the signal acquisition circuit for the unexpected movement of the elevator car of the tester receives the trigger signal, if so, executing S303, and if not, executing S304.
In this embodiment, triggering signal is the signal that loses electricity, and the tester removes the signal acquisition circuit according to the car accident and detects the signal control stopper outage that loses electricity, triggers the stopper band-type brake to make the elevator stop.
When the brake is powered on, the brake is released, the elevator car moves upwards, and when the upper door zone sensor on the car detects that the car leaves a door zone, the upper re-leveling door zone signal input circuit is disconnected, so that the tester car accidentally moving signal acquisition circuit connected in the upper re-leveling door zone signal input circuit loses power to generate a trigger signal.
S303: the tester controls the brake to be powered off, the tester synchronously obtains the moving direction, the moving distance and the braking deceleration measured by the speed measuring sensor in the elevator braking process, and after the elevator is braked, the relative position of the car in the shaft is measured to judge whether the moving distance and the braking deceleration meet the requirements of GB 7588-2003.
In this embodiment, the tester includes auxiliary relay, and auxiliary relay is connected with the stopper control circuit of signal acquisition circuit, controller respectively, and signal acquisition circuit loses the electricity and produces trigger signal, and this trigger signal control auxiliary relay contact disconnection, and then makes stopper control circuit disconnection, stopper outage through this contact disconnection operation to make the elevator stop.
In other embodiments, the tester may also include a processor, the processor is connected to the elevator UCMP detection subsystem and the brake control circuit, and the processor controls the independent power supply to be disconnected from the brake control circuit or to disconnect the brake control circuit after receiving the trigger signal transmitted from the car accidental movement signal acquisition circuit, so as to cut off the power of the brake.
In this embodiment, the speed sensor is provided on the traction drive machine wire rope side or the governor wire rope side of the elevator. The speed measuring sensor is connected with the tester through a data line, and in the elevator braking and stopping process, the tester synchronously obtains the moving direction, the moving distance and the braking and stopping deceleration of the lift car measured by the speed measuring sensor. After the elevator stops, the relative position of the elevator car in the hoistway is measured, and whether the moving distance and the stopping deceleration meet the requirements of GB7588-2003 is judged.
In other embodiments, the speed measuring sensor can also be connected with the tester in a wireless communication mode such as WiFi, bluetooth, NB-IOT communication and the like.
S304: the control tester receives an input power-off instruction, controls the brake to power off according to the power-off instruction, and determines that the protection device for the accidental movement of the elevator car fails.
In this embodiment, the elevator removes the back, and the tester does not receive the unexpected trigger signal who removes signal acquisition circuit transmission of car, does not control the tester outage. In order to stop the elevator, a power-off command is input to the tester, and the tester disconnects the control circuit or the brake stopping loop according to the power-off command to stop the brake.
In other embodiments, the tester may also control the brake to be powered on, and then determine whether the trigger signal transmitted by the signal acquisition circuit is received within a preset time, and if the trigger signal is not received, control the brake to be powered off. The preset time can be set according to actual conditions, and only the preset time is longer than the time for the elevator car to reach the maximum unexpected moving distance required by GB7588 when the acceleration of the unexpected movement is maximum.
The following further describes the detection method of the elevator car accidental movement protection device through the flow of the elevator car actual test.
1 preparation before testing. The elevator stops at a proper floor at the upper part of the shaft, the lift car has no load, the car door of the floor is closed, and the internal and external calling functions of the elevator are cancelled.
2 the original control loop of the elevator brake is replaced by the brake control loop equipped by the tester. The brake power supply and the control loop are completely replaced by the tester, and only the brake control loop is replaced by the tester.
2.1 the connection mode of the brake power supply and the control loop is replaced by the tester: the input power supply control circuit of the brake is removed from the junction box of the elevator brake, and the control circuit which is provided by the tester and supplied with power by the independent power supply with the same type and voltage value as the power supply of the elevator brake is connected to the input power supply wiring terminal of the brake, so that the power supply of the brake and the original control circuit are completely replaced by the tester.
2.2 only the original control circuit is connected by the wiring mode replaced by the tester: two wiring terminals of an original control circuit for supplying power to the brake are detached from a switch power supply box for supplying power to the brake in the elevator control cabinet, the head end of a brake control loop equipped with the tester is connected with the two wiring terminals, and the tail end of the brake control loop is connected with two terminals of an input power supply wiring terminal in the brake wiring box, so that the brake control loop is replaced by the tester.
3 two wiring terminals of a signal input circuit of the upper re-leveling door zone are found on a UCMP circuit board in the elevator control cabinet, and two leads of a signal acquisition circuit for the accidental movement of the lift car equipped by the tester are respectively connected with the two wiring terminals. And the car accidental movement signal acquisition circuit of the tester carries out interlocking control on a brake control circuit of the tester through the intermediate relay contact.
4, the speed measuring sensor is arranged at a proper position beside the elevator main machine, so that the speed measuring roller is tightly attached to the traction steel wire rope or the speed governor steel wire rope. The sensor is connected with a sensor interface on the testing instrument through a data line (or data transmission is realized through Bluetooth), so that the measurement of the moving direction, the moving distance and the braking deceleration of the car is realized.
5 operating a brake circuit power supply button switch of the detecting instrument to electrify and release the elevator brake, and utilizing the extreme state with the maximum gravity difference at the two sides of the traction sheave to ensure that the lift car moves upwards accidentally.
And 6, when the upper door zone sensor on the car detects that the car leaves a door zone, the upper re-leveling door zone signal input circuit is disconnected, so that the tester car accidentally moving signal acquisition circuit connected in series with the upper re-leveling door zone signal input circuit loses power, the brake control circuit is disconnected through the intermediate relay contact, and the brake is triggered to brake and the elevator is stopped.
And 7, automatically acquiring and calculating the unexpected moving direction, the moving distance and the braking and stopping deceleration of the car by a speed measuring sensor.
And 8, measuring the relative position of the car in the hoistway, and judging whether the moving distance and the braking deceleration meet the requirements of GB 7588.
According to the invention, the most extreme condition that the acceleration of the accidental movement of the lift car is the largest and the accidental movement distance is the longest when the lift car to be detected is unloaded and the brake is opened is utilized, the truest accidental movement scene is simulated, whether the UCMP detection subsystem reliably detects the accidental movement of the lift car and triggers the braking subsystem is directly verified, whether the braking subsystem acts in time after being triggered is directly verified, and the lift car stops moving within the range of not exceeding the specified movement distance in the GB 7588-2003I modification list. The method is the most accurate, reliable and objective method for detecting whether the UCMP function of the elevator meets the standard requirement.
The invention solves the defects that the validity of the detection subsystem and the linkage reliability between the detection subsystem and the braking subsystem are not verified in the current universal checking method of the UCMP device of the elevator, which only detects the braking performance of the braking subsystem.
Has the advantages that: the detection system can simulate the situation when the elevator car actually moves accidentally by controlling the power-on and power-off of the brake through the tester, so as to detect whether the UCMP device can automatically act, realize the direct detection of the elevator braking subsystem, directly verify the functional validity and linkage reliability of the UCMP detection subsystem and the braking subsystem through the acquisition of the trigger signal by the tester car accidental movement signal acquisition circuit, indirectly judge the inspection conclusion without adopting the method of comparing the detected elevator detection data with the sample ladder type test data at present, avoid the problem of misjudgment of the inspection conclusion possibly caused by the inconsistency of the sample ladder and the detected elevator structure parameters, and improve the verification reliability.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are intended to be covered by the claims.
Claims (9)
1. The detection method of the elevator car accidental movement protection device is characterized in that an elevator car has functions of leveling, re-leveling and preparation operation under the condition of opening a door, a tester is connected with a brake, the brake is disconnected with an original control circuit, a car accidental movement signal acquisition circuit of the tester is connected with a signal input circuit of an upper re-leveling door area of the elevator car, and the detection method comprises the following steps:
s101: receiving an input electrifying command, and controlling the brake to be electrified according to the electrifying command;
s102: judging whether the signal acquisition circuit for the accidental movement of the lift car receives a trigger signal, if so, executing S103, and if not, executing S104;
s103: controlling the brake to be powered off, synchronously acquiring the moving direction, the moving distance and the braking deceleration measured by the speed measuring sensor by the tester in the braking and stopping process of the elevator, measuring the relative position of the elevator car in the hoistway after the elevator is braked and judging whether the moving distance and the braking deceleration meet the requirements of GB 7588-2003;
s104: receiving an input power-off instruction, controlling the brake to be powered off according to the power-off instruction, and determining that the elevator car accidental movement protection device fails;
wherein, the tester is connected with the stopper, and the brake specifically includes with former control circuit's disconnection:
the original control circuit of the brake is disconnected, the output end of the brake control loop of the tester is connected with the input power supply wiring terminal of the brake, and the input end of the brake control loop is connected with the power supply in the brake wiring box.
2. The method as claimed in claim 1, wherein the tester is connected to the brake, and the disconnection of the brake from the original control circuit comprises:
the original control circuit of the brake is disconnected, and the control circuit containing the independent power supply in the tester is connected with the input power supply terminal of the brake.
3. The method for detecting the accidental movement of the elevator car as claimed in claim 1, wherein the speed sensor is disposed on a rope side of a traction drive main machine or a speed governor rope side of the elevator.
4. The method for detecting the accidental movement protection device of the elevator car according to claim 1, wherein the connection between the car accidental movement signal acquisition circuit of the tester and the input circuit of the upper releveling door area of the elevator car specifically comprises:
two wires of the signal acquisition circuit for the accidental movement of the car are respectively connected with two wiring terminals of the input circuit of the upper releveling door area.
5. The tester is used for detecting the elevator car accidental movement protection device and is characterized in that the elevator car has the functions of leveling, re-leveling and preparatory operation under the condition of opening a door, the tester is connected with a brake, the brake is disconnected with an original control circuit, a car accidental movement signal acquisition circuit of the tester is connected with an upper re-leveling door area signal input circuit of the elevator car, and the tester executes the following detection method:
s201: receiving an input electrifying command, and controlling the brake to be electrified according to the electrifying command;
s202: judging whether the signal acquisition circuit for the accidental movement of the car receives a trigger signal, if so, executing S203, and if not, executing S204;
s203: controlling the brake to be powered off, synchronously acquiring the moving direction, the moving distance and the braking deceleration measured by the speed measuring sensor by the tester in the braking and stopping process of the elevator, measuring the relative position of the elevator car in the well after the elevator is stopped, and judging whether the moving distance and the braking deceleration meet the requirements of GB 7588-2003;
s204: and receiving an input power-off command, controlling the brake to be powered off according to the power-off command, and determining that the protection device for the accidental movement of the elevator car fails.
6. The tester of claim 5, wherein the tester is connected to a brake, and disconnection of the brake from the original control circuit specifically comprises:
the original control circuit of the brake is disconnected, and the control circuit containing the independent power supply in the tester is connected with the input power supply terminal of the brake.
7. The tester of claim 5, wherein the tester is connected to a brake, and disconnection of the brake from the original control circuit specifically comprises:
the original control circuit of the brake is disconnected, the output end of the brake control loop of the tester is connected with the input power supply wiring terminal of the brake, and the input end of the brake control loop is connected with the power supply in the brake wiring box.
8. The tester as claimed in claim 5, wherein the speed sensor is provided on a rope side of a traction drive main machine or a governor rope side of an elevator.
9. A detection system for detecting an accidental movement protection device of an elevator car, characterized in that the elevator car has functions of leveling, re-leveling and preparatory operation when the door is opened, the detection system comprises a tester and a speed sensor, the tester comprises the tester according to any one of claims 5-8.
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| CN108147240B (en) * | 2017-12-06 | 2019-06-21 | 天津市特种设备监督检验技术研究院(天津市特种设备事故应急调查处理中心) | A kind of digitized elevator brake ability monitoring and method for early warning |
| CN110526064B (en) * | 2019-09-12 | 2021-07-30 | 上海三菱电梯有限公司 | Function testing device for elevator car accidental movement protection system |
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| US5407028A (en) * | 1993-04-28 | 1995-04-18 | Otis Elevator Company | Tested and redundant elevator emergency terminal stopping capability |
| CN102040141A (en) * | 2009-10-15 | 2011-05-04 | 河南理工大学 | Rope-free lifting machine using lifting force as brake drive force |
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