CN109019236B - Fault detection device and method for elevator brake control device - Google Patents
Fault detection device and method for elevator brake control device Download PDFInfo
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- CN109019236B CN109019236B CN201710436951.7A CN201710436951A CN109019236B CN 109019236 B CN109019236 B CN 109019236B CN 201710436951 A CN201710436951 A CN 201710436951A CN 109019236 B CN109019236 B CN 109019236B
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- elevator
- brake
- electromagnetic actuator
- braking
- brake control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
Abstract
The invention discloses a fault detection device of an elevator brake control device, which comprises at least two groups of brake components arranged on an elevator car; a control unit for controlling the brake assembly with electronic signals according to elevator car information; the fault detection device of the elevator brake control device detects the fault of the elevator brake control device by means of the state information of the electromagnetic actuator through the control unit. The fault detection device can ensure that the brake is still effective when the brake control device has a fault, and the elevator is braked after running to the landing leveling layer, so that passengers are prevented from being trapped.
Description
Technical Field
The invention relates to an accessory of an elevator, in particular to a fault detection device for an elevator brake control device. The invention also relates to a fault detection method of the elevator brake control device.
Background
Current elevators typically contain a safety system consisting of a braking device, a mechanical governor, a tension sheave and a wire rope. The subsystem consisting of the speed limiter, the tension wheel and the steel wire rope has two functions of detecting the running speed of the elevator; and secondly, triggering a braking device to brake when the preset speed is exceeded. Generally, the governor is installed at a position above the hoistway or on a machine room floor, the tension pulley is installed in a pit, and the wire rope forms a closed loop between the governor and the tension pulley. When the elevator is detected to exceed the preset speed, the speed limiter acts, a lifting rod of the braking device is lifted through a steel wire rope, a brake block is pushed to clamp a guide rail, and braking force is generated. Generally, after braking is completed, the governor needs to be manually reset.
A disadvantage of this braking system is that it fails in the event of a break or other failure of the cable between the governor and the tension sheave. This can have a serious impact on the safe operation of the elevator system, bringing about a great hidden danger.
In general, an elevator brake control device of an electronic trigger type is immediately braked once a failure occurs. This will result in a sudden stop of the moving elevator car and passengers in the car will be trapped in the car and can only wait for an external rescue.
Disclosure of Invention
The present invention has been made in view of the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a fault detection device for an elevator brake control device, which can operate under the control of an electronic control signal to perform emergency braking of an elevator car or an elevator balance mass, and can be reset by the electronic control signal after the braking is completed. When the brake control device breaks down, the brake can still be effective, and the elevator is braked after running to the landing leveling layer, so that passengers are prevented from being trapped.
In order to achieve the aim, the invention provides a fault detection device of an elevator brake control device, which comprises at least two groups of brake assemblies arranged on an elevator car; a control unit for controlling the brake assembly with electronic signals according to elevator car information; the fault detection device of the elevator brake control device detects the fault of the elevator brake control device by means of the state information of the electromagnetic actuator through the control unit.
Preferably, each set of brake assemblies comprises: the elevator braking device comprises a supporting component, a braking block, a guiding block and a control component, wherein the supporting component is used for supporting the braking assembly, the braking block comprises a braking surface and a guided surface, the braking surface is used for contacting or separating an elevator guide rail to brake or reset the elevator, the guiding block comprises a guiding surface and a connecting surface, the guiding surface is used for guiding the braking block to contact or separate from the elevator guide rail, the connecting surface is fixedly connected with the supporting component, and an elastic energy storage element is fixedly connected with the braking block, and the pushing force or the traction force generated by the elastic energy storage element on the braking block is used for controlling the position and the movement direction of the braking; simultaneously at least two sets of brake assembly every group includes respectively: the electromagnetic actuator is used for receiving the electronic signal of the control unit and generating electromagnetic action force to control the position and the movement direction of the brake block; the brake blocks of the brake assemblies are connected through a linkage mechanism so that the brake assemblies can be linked to contact or separate the guide rails.
Preferably, the control unit is configured to determine a fault of the electromagnetic actuator according to information of current, temperature and vibration in the electromagnetic actuator, and instruct the remaining normally operating electromagnetic actuators to enter a fault mode.
Preferably, the failure modes are: and increasing the load output by the normally-operated electromagnetic actuator to ensure that all brake blocks are in normal working positions during the running of the car to the landing, and braking after the car runs to the landing.
Preferably, a temperature detection unit for detecting the temperature of the electromagnetic actuator in real time is arranged on the electromagnetic actuator.
Preferably, a vibration detection unit for detecting the vibration of the electromagnetic actuator in real time is provided on the electromagnetic actuator.
Preferably, a current detection unit for detecting the current induced in the electromagnetic actuator in real time is arranged on the electromagnetic actuator.
Preferably, the electromagnetic actuator is provided between the guided surface of the brake block and the guide surface of the guide block, and includes a movable portion and a fixed portion, and coils are provided on the movable portion and the fixed portion, and a current flows through the coils to generate an acting force between the movable portion and the fixed portion.
Preferably, the electromagnetic actuator is arranged between the guided surface of the braking block and the guiding surface of the guiding block, and the electromagnetic actuator comprises a movable part and a fixed part, wherein the movable part is provided with a permanent magnet or a coil, and the fixed part is correspondingly provided with a coil or a permanent magnet.
Preferably, a position code strip is arranged on the fixing part, the code strip carries out position coding on the whole length of the fixing part, and each code corresponds to a unique position on the fixing part;
a code strip position detecting portion is provided on the movable portion, and reads position information on the position code strip to determine a position of the movable portion with respect to the fixed portion.
The present invention also provides a method for detecting a failure detection device using an elevator brake control device, comprising the steps of: the detection signal of the electromagnetic actuator is transmitted to the control unit through the transmission unit; the control unit judges the working state of the electromagnetic actuator according to the detection signal; when one of the temperature, vibration and current value of the electromagnetic actuator exceeds a preset threshold value, judging that the actuator has a fault; the control unit causes the brake control device to enter a failure coping mode when it is determined that the actuator has failed.
During normal elevator operation, the relative position between the guide block and the brake block is maintained by means of electromagnetic force. Since the electromagnetic actuator is divided into the fixed portion and the movable portion, the electromagnetic actuator can detect the position of the movable portion with respect to the fixed portion and also can detect the electromagnetic force between the movable portion with respect to the fixed portion. The relative position information and the electromagnetic force information of the movable part and the fixed part are transmitted to the control unit through the transmission unit. The fixed part and the movable part of the electromagnetic actuator can maintain relative positions under the control of the control unit. Relative movement may also occur. The control unit controls the electromagnetic actuator based on the relative positions of the fixed part and the movable part and the force between the fixed part and the movable part. The control unit controls the electromagnetic actuator based on a force feedback control between the fixed part and the movable part.
The detection unit can detect absolute position information, speed information, acceleration information and car door opening and closing state information of the elevator car. The transmission unit can transmit car speed, acceleration, position and car door state information, position information of the movable part and the fixed part of the electromagnetic actuator and electromagnetic force information between the movable part and the fixed part of the electromagnetic actuator to the control unit, the control unit judges and controls the state of the emergency braking device through logic, and feedback control is carried out on the electromagnetic actuator according to the relative position information and the electromagnetic force information of the movable part and the fixed part of the electromagnetic actuator, so that accurate control is realized.
When the elevator needs to be restored from the braking state to the normal operation state, the elevator car is controlled to move upwards, and the control unit controls the electromagnetic actuator to enable the brake block to move downwards relative to the frame and overcome the acting force of the elastic element until the brake block is restored to the proper position and maintains the position.
Under various working conditions, the controller performs feedback control on the brake block according to the feedback relative position information and the electromagnetic force information of the fixed part and the movable part of the electromagnetic actuator so as to ensure the control precision.
When one of the electromagnetic actuators has a fault, the other electromagnetic actuators can still normally operate, and the control unit controls the car door and the landing door and does not respond to the landing calling button any more to display the fault.
In the event of a simultaneous failure of both brake controllers, the resilient member can independently urge the brake pads upward relative to the frame, into contact with the guide rails, and generate sufficient braking force.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
fig. 1 is a schematic view of an elevator having a failure detection device of an elevator brake control device of the present invention.
Fig. 2 is a schematic view showing an unbraked state of a brake assembly in the failure detection apparatus of the elevator brake control apparatus of the present invention.
Fig. 3 is a schematic view showing a braking state of a brake assembly in a failure detection apparatus of an elevator brake control apparatus of the present invention.
Fig. 4 is a brake control schematic diagram of a brake assembly in a failure detection apparatus of an elevator brake control apparatus of the present invention.
Fig. 5 is a schematic view of feedback control of the electromagnetic actuator of the failure detection device of the elevator brake control device according to the present invention based on the relative positions of the movable portion and the fixed portion.
Fig. 6 is a schematic view of feedback control of an electromagnetic actuator of a failure detection device of an elevator brake control device according to the present invention based on electromagnetic force between a movable portion and a fixed portion.
Fig. 7 is a schematic view of an embodiment of an electromagnetic actuator in the failure detection device of the elevator brake control device of the present invention.
Fig. 8 is a schematic view of another embodiment of an electromagnetic actuator in the failure detection device of the elevator brake control apparatus of the present invention.
Fig. 9 is a schematic view of a method for detecting another embodiment of the electromagnetic actuator in the failure detection device of the elevator brake control apparatus of the present invention.
Fig. 10 is a schematic diagram of an embodiment of a failure detection device of an elevator brake control device according to the present invention.
Fig. 11 is a schematic diagram of a first mode of detecting an operation state of a failure detection device of an elevator brake control device according to the present invention.
Fig. 12 is a schematic diagram of a second mode of detecting the operation state of the failure detection device of the elevator brake control device according to the present invention.
Fig. 13 is a schematic view of a third mode of detecting the operation state of the failure detection device of the elevator brake control device according to the present invention.
Fig. 14 is a control schematic diagram of a failure detection method of the elevator brake control device of the present invention.
Fig. 15 is a schematic view of another embodiment of the elevator brake control apparatus of the present invention.
Description of reference numerals:
1 cage 10 elevator
1a upper guide 1b lower guide
2 track 20 run way
3 braking assembly of elevator braking control device 30
31 brake pad
32 support frame 32a frame upper plate
33 elastic element
35 guide block 35a cylindrical rolling body
36 elastomer
4 detection unit
41 temperature detection unit 42 vibration detection unit
43 Current detecting Unit
44-code-belt 45-code-belt position detecting part
5 Transmission Unit
61 guide structure
61a cylindrical rolling element 61b guide mechanism frame
71-74, 76 connecting rod
8 electromagnetic actuator
8a electromagnetic actuator movable part 8b electromagnetic actuator fixed part
81 support 82 a-82 e coil two
83 iron core 84 coil one
85 permanent magnet 86 mounting plate
9 control unit
Detailed Description
As shown in fig. 1, the elevator 10 with the fault detection device of the elevator brake control device comprises a car 1, a T-shaped guide rail 2 is fixedly arranged in a running channel 20 of the car 1, the car 1 is movably arranged in the T-shaped guide rail 2, and the car 1 can run up and down along the T-shaped guide rail 2; the upper and lower parts of the car 1 are provided with guides 1a and 1b, respectively.
As shown in fig. 2, the fault detection device of the elevator brake control device comprises a brake assembly 30, wherein the brake assembly comprises a brake block 31, the brake block 31 is arranged on one side of the guide rail 2, and an included angle is formed between a braking surface (namely, a front surface close to the guide rail 2) and a guiding surface (namely, a back surface far away from the guide rail 2) of the brake block 31, so that the brake block 31 is wedge-shaped (namely, the guiding surface of the brake block 31 is a slope surface); the braking surface of the brake shoe 31 is parallel to the side surface of the guide rail 2, and an included angle is formed between the guiding surface of the brake shoe 31 and the side surface of the guide rail 2.
The guide block 35 is fixedly connected with the support frame 32 through an elastic body 36; the support frame 32 is fixedly connected with the car 1; the brake block 31 is connected to the support frame 32 by means of an elastic member; the actuator 8 is used for keeping the position of the brake block 31 and limiting the movement direction of the brake block; the elastic body 36 can cause the brake shoe 31 to generate a pressing force against the rail 2.
The electromagnetic actuator 8 is composed of a movable portion 8a and a fixed portion 8b, 8a being fixedly attached to the guide surface of the brake pad 31 (i.e., the back surface away from the guide rail 2), and 8b being fixedly attached to the side surface of the guide block 35 close to the brake pad 31.
The contact surface of the guide block 35 with the actuator fixing portion 8b is a slope whose angle of inclination matches the guide surface of the brake pad 31 to ensure that the braking surface of the brake pad 31 is parallel to the side surface of the guide rail 2.
The brake assemblies 30 can be respectively arranged on two sides of the guide rail 2, namely, each side surface of the guide rail 2 is correspondingly provided with a brake block 31; it is also possible to provide the brake assembly 30 on only one side of the rail 2, i.e. to provide one of the sides of the rail 2 with a brake shoe 31.
The failure detection device of the elevator brake control device is also provided with an elastic element 33 fixedly connected with the supporting frame, one end of the elastic element 33 is fixedly connected with the supporting frame 32, the other end of the elastic element is fixedly connected with the brake block 31, and the pushing force or the traction force generated by the elastic element 33 on the brake block 31 is used for controlling the position and the movement direction of the brake block 31.
The failure detection device of the elevator brake control device further comprises a control unit 9 which controls the brake assembly 30 with electronic signals according to elevator car information; the failure detection device of the elevator brake control device controls the brake assembly 30 through the control unit 9, and enables the brake assembly 30 to brake, reset and adjust the elevator by means of electromagnetic actuating force.
The working principle of the fault detection device of the elevator brake control device is as follows:
fig. 2 is a schematic view of the failure detection device of the elevator brake control device in a non-operating state, in which a gap exists between the braking surface of the brake shoe 31 and the guide rail 2, and the position of the brake shoe 31 is maintained by feedback control of the control unit 9.
When the brake block 31 needs to move in a direction close to the upper plate 32a of the frame, the actuator 8 generates an electromagnetic force that pushes the brake block 31 to move, and together with the elastic force of the elastic member 33, pushes the brake block 31 to move upward along the guide rail 2 relative to the support frame 32 (the brake block 31 still keeps moving downward relative to the guide rail 2), so that the gap between the brake block 31 and the guide rail 2 is gradually reduced until the brake block 31 contacts the guide rail 2 and generates a sliding friction force. As the brake shoe 31 moves downward relative to the rail 2, the sliding friction force between the brake shoe 31 and the rail 2, which moves the brake shoe 31 in a direction closer to the frame upper plate 32a until the brake shoe 31 contacts the frame upper plate 32a, is directed upward; figure 3 shows the brake shoe in contact with the upper plate 32 a. In this process, the sliding friction force gradually increases, and the braking force is transmitted to the car 1 through the frame upper plate 32a of the support frame 32, thereby implementing deceleration braking on the car 1.
After braking is finished, before the elevator car 1 returns to normal operation, the fault detection device of the elevator brake control device needs to be returned from the braking state (shown in fig. 3) to the normal operation state (shown in fig. 2), in the process, the car 1 slightly moves upwards, and the brake block 31 overcomes the elastic force of the elastic element 33 and moves towards the direction far away from the frame end upper plate 32a under the action of the electromagnetic actuator until the brake block 31 reaches the expected position.
Fig. 4 is a control schematic diagram of a failure detection device of an elevator brake control device, in which a detection unit 4 of an elevator 10 detects the speed, position, acceleration, and door state of a car 1, these pieces of information are transmitted to a control unit 9 through a transmission unit 5, the control unit 9 logically determines these pieces of information and outputs a control signal, the control signal controls an electromagnetic actuator 8, and relative position information and electromagnetic force information of a movable portion 8a and a fixed portion 8b of the electromagnetic actuator 8 are fed back to the control unit 9 through the transmission unit, thereby realizing feedback control of the electromagnetic actuator 8.
Fig. 5 shows that the control of the electromagnetic actuator 8 is based on the feedback of the relative positions of the movable portion 8a and the fixed portion 8 b.
Fig. 6 shows that the control of the electromagnetic actuator 8 is based on the feedback of the electromagnetic force between the movable portion 8a and the fixed portion 8 b.
Fig. 7 shows a version of an electromagnetic actuator, the actuator 8 being composed of a movable part 8a and a fixed part 8b, wherein the movable part 8a is composed of an iron core 83 and a first coil 84 fixed to the iron core 83; the fixed portion 8b is composed of a support 81 and two coils 82a to 82e fixed to the support 81. When a sinusoidal current is applied to the second coils 82a to 82e, an air-gap magnetic field is generated, and when the sinusoidal current changes, the air-gap magnetic field moves linearly along the length direction of the supporting plate 81, the first coil 84 in the movable portion 8a cuts magnetic lines in the moving magnetic field, an electromotive force is induced and a current is generated, and the current and the air-gap magnetic field in the first coil 84 interact to generate an electromagnetic force, which pushes the movable portion 8a to move relative to the fixed portion 8 b. The speed and position of movement of the movable part 8a relative to the fixed part 8b can be controlled by varying the current in the coils 82 a-82 e.
Fig. 8 shows another version of the actuator, the movable part 8a of the electromagnetic actuator 8 being composed of a mounting plate 86 and a permanent magnet 85 mounted on the mounting plate 86; the fixed portion 8b is composed of a support 81 and two coils 82a to 82e fixed to the support 81. Similar to the principle shown in fig. 1, when the sinusoidal current in the two coils 82a to 82e changes, the air-gap magnetic field will move linearly along the length direction of the supporting plate 81, and when the current passes through the two coils 82a to 82e, the air-gap magnetic field will move linearly along the length direction of the supporting plate 81, and an electromagnetic force is generated between the permanent magnet 85 in the movable part 8a and the air-gap magnetic field, and the electromagnetic force pushes the movable part 8a to move relative to the fixed part 8 b. The speed and position of the relative movement of the movable part 8a with respect to the fixed part 8b can be controlled by varying the current in the coils 82a to 82 e. Meanwhile, as shown in fig. 9, a position code strip 44 may be provided on the fixed portion 8b, the code strip 44 may position-code the entire length of the fixed portion 8b, each code corresponds to a unique position on the fixed portion 8b, the code strip position detecting portion 45 may be fixedly attached to the movable portion 8a, and the detecting portion 45 may read position information on the code strip 44 to specify the position of the movable portion 8a with respect to the fixed portion 8 b.
Fig. 10 shows an embodiment of a failure detection device of an elevator brake control device of the present invention. The scheme at least comprises two sets of electromagnetic actuators, a controller and a detection device. Electromagnetic actuators 8 are provided between the two sets of brake pads 31 and guide blocks 35, respectively, and guide structures 61 are provided between the remaining brake pads 31 and guide blocks 35. A link mechanism (including a link 71, a link 72, a link 73, a link 74, and a link 76) connecting the brake devices disposed up and down along the guide rail and the brake devices on the left and right sides of the guide rail is provided between the brake shoe 31a connected to the electromagnetic actuator 8 and the remaining brake shoes 31. While the brake pads 31 are held in place by the electromagnetic actuators 8R and 8L, the remaining brake pads 31 are also held in place by the action of the linkage mechanism. When the brake block is triggered, the brake block 31 moves upward under the action of the electromagnetic force of the electromagnetic actuator and the elastic element 33, and at the same time, the link mechanism is driven to move, so that the rest brake blocks 31 move upward synchronously, and the purpose of braking is achieved.
Fig. 11 is a schematic diagram of a first mode of detecting an operation state of a failure detection device of an elevator brake control device according to the present invention. A temperature detection unit 41 is provided on the electromagnetic actuator, and the temperature detection unit 41 can detect the temperature of the electromagnetic actuator in real time.
Fig. 12 is a schematic diagram of a second mode of detecting the operation state of the failure detection device of the elevator brake control device according to the present invention. A vibration detection unit 42 is provided on the electromagnetic actuator, and the vibration detection unit 42 can detect the vibration of the electromagnetic actuator in real time.
Fig. 13 is a schematic view of a third mode of detecting the operation state of the failure detection device of the elevator brake control device according to the present invention. The electromagnetic actuator is provided with a current detection means 43, and the current detection means 43 can detect an induced current in the movable portion 8a of the electromagnetic actuator in real time.
Fig. 14 is a control schematic diagram of a failure detection method of the elevator brake control device of the present invention. The detection signal (such as temperature, vibration and current) of the operation state of the electromagnetic actuator is transmitted to the control unit 9 through the transmission unit 5, the control unit 9 judges the working state of the electromagnetic actuator 8 according to the detection signal, and when one of the temperature, vibration and current values of the electromagnetic actuator 8 exceeds a preset threshold value, the actuator is judged to be in fault. When it is determined that the actuator has failed, the control unit will control the elevator brake control device 3 to enter a failure handling mode, that is: the power supply of the electromagnetic actuator with a fault is cut off, the electromagnetic actuator which normally works is controlled to output electromagnetic force which is 2 times of the original electromagnetic force, the normal operation of the elevator brake control device 3 can be ensured by the electromagnetic force, the control unit 9 simultaneously controls the elevator to operate to the landing and stop, after the elevator car arrives at the landing, the control unit 9 controls the electromagnetic actuator which normally works to push the brake block 31 to move upwards, and the elevator brake control device 3 triggers the brake. The control unit 9 now controls the car doors and landing door openings and no longer responds to the landing call button to indicate a fault.
Fig. 15 is a schematic view of another embodiment of the elevator brake control apparatus of the present invention. When the simultaneous failure of the brakes 8R and 8L is detected, the control unit 9 controls the electromagnetic actuators 8R and 8L to lose power, at this time, the brake block 31 moves upwards under the pushing of the elastic element 33 to rub with the guide rail to generate a braking force, and the emergency braking device 3 brakes the car.
The fault detection device of the elevator brake control device cancels a subsystem consisting of a mechanical speed limiter, a tension pulley and a steel wire rope, overcomes the defects of the published scheme, enlarges the application range of the brake device and enhances the safety of the elevator.
Claims (11)
1. A failure detection device for an elevator brake control device, comprising:
at least two groups of brake assemblies arranged on the elevator car;
a control unit for controlling the brake assembly with electronic signals according to elevator car information;
the fault detection device of the elevator brake control device detects the fault of the elevator brake control device by the control unit according to the state information of the electromagnetic actuator;
each set of brake assemblies includes: the elevator braking device comprises a supporting component, a braking block, a guiding block and a control component, wherein the supporting component is used for supporting the braking assembly, the braking block comprises a braking surface and a guided surface, the braking surface is used for contacting or separating an elevator guide rail to brake or reset the elevator, the guiding block comprises a guiding surface and a connecting surface, the guiding surface is used for guiding the braking block to contact or separate from the elevator guide rail, the connecting surface is fixedly connected with the supporting component, and an elastic energy storage element is fixedly connected with the braking block, and the pushing force or the traction force generated by the elastic energy storage element on the braking block is used for controlling the position and the movement direction of the braking;
simultaneously at least two sets of brake assembly every group includes respectively: the electromagnetic actuator is used for receiving the electronic signal of the control unit and generating electromagnetic action force to control the position and the movement direction of the brake block;
the brake blocks of each group of brake assemblies are connected through a link mechanism so that each group of brake assemblies can be linked to contact or separate the guide rail;
the control unit controls the electromagnetic actuator based on the relative positions of the fixed part and the movable part and the force between the fixed part and the movable part.
2. The apparatus for detecting a failure in an elevator brake control apparatus according to claim 1, wherein the control unit is configured to determine a failure of the electromagnetic actuator based on information on current, temperature, and vibration in the electromagnetic actuator, and instruct the remaining normally operating electromagnetic actuators to enter a failure mode.
3. The failure detection device of an elevator brake control apparatus according to claim 2, wherein the failure mode is: and increasing the load output by the normally-operated electromagnetic actuator to ensure that all the brake blocks are in normal working positions during the running of the car to the landing, and braking by the elevator braking control device after the car runs to the landing.
4. The apparatus for detecting a malfunction of an elevator brake control apparatus according to claim 3, wherein a temperature detecting unit for detecting a temperature of the electromagnetic actuator in real time is provided on the electromagnetic actuator.
5. The apparatus for detecting a malfunction of an elevator brake control apparatus according to claim 3, wherein a vibration detecting unit for detecting vibration of the electromagnetic actuator in real time is provided on the electromagnetic actuator.
6. The failure detecting device of an elevator brake control apparatus according to claim 3, wherein a current detecting unit for detecting a current induced in the electromagnetic actuator in real time is provided to the electromagnetic actuator.
7. The failure detecting device of an elevator brake control apparatus according to any one of claims 1 to 6, wherein the electromagnetic actuator is provided between the guided surface of the brake shoe and the guide surface of the guide shoe, the electromagnetic actuator including a movable portion and a fixed portion on which coils are provided, a current flowing through the coils generating an acting force between the movable portion and the fixed portion.
8. The failure detecting device of an elevator brake control apparatus according to any one of claims 1 to 6, wherein the electromagnetic actuator is provided between the guided surface of the brake shoe and the guide surface of the guide shoe, and the electromagnetic actuator includes a movable portion provided with a permanent magnet or a coil and a fixed portion provided with a coil or a permanent magnet, respectively.
9. The failure detection device of an elevator brake control apparatus according to claim 7,
the fixing part is provided with a position code belt, the code belt carries out position coding on the whole length of the fixing part, and each code corresponds to a unique position on the fixing part;
a code strip position detecting portion is provided on the movable portion, and reads position information on the position code strip to determine a position of the movable portion with respect to the fixed portion.
10. The failure detection device of an elevator brake control apparatus according to claim 8,
the fixing part is provided with a position code belt, the code belt carries out position coding on the whole length of the fixing part, and each code corresponds to a unique position on the fixing part;
a code strip position detecting portion is provided on the movable portion, and reads position information on the position code strip to determine a position of the movable portion with respect to the fixed portion.
11. A detection method using a failure detection device of an elevator brake control device according to any one of claims 1 to 6, characterized by comprising the steps of:
the detection signal of the electromagnetic actuator is transmitted to the control unit through the transmission unit;
the control unit judges the working state of the electromagnetic actuator according to the detection signal;
when one of the temperature, vibration and current value of the electromagnetic actuator exceeds a preset threshold value, judging that the actuator has a fault;
the control unit causes the brake control device to enter a failure coping mode when it is determined that the actuator has failed.
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| CN201710436951.7A CN109019236B (en) | 2017-06-12 | 2017-06-12 | Fault detection device and method for elevator brake control device |
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|---|---|---|---|
| CN201710436951.7A CN109019236B (en) | 2017-06-12 | 2017-06-12 | Fault detection device and method for elevator brake control device |
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| CN109019236A CN109019236A (en) | 2018-12-18 |
| CN109019236B true CN109019236B (en) | 2020-09-22 |
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| US20210101782A1 (en) * | 2019-10-04 | 2021-04-08 | Otis Elevator Company | Electromagnetic brake temperature monitoring system and method |
| US20210147182A1 (en) * | 2019-11-19 | 2021-05-20 | Electrical and Mechanical Services Department, The Government of Hong Kong Special Administrative Re | Non-intrusive data analytics system for adaptive intelligent condition monitoring of lifts |
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| US4984659A (en) * | 1988-02-01 | 1991-01-15 | Mitsubishi Denki Kabushiki Kaisha | Elevator control apparatus |
| KR960008456Y1 (en) * | 1993-06-11 | 1996-10-02 | 엘지산전 주식회사 | Magnetic brake device for elevator car |
| CN2539732Y (en) * | 2002-03-27 | 2003-03-12 | 涂翼民 | Falling-proof device for lift equipment |
| CN203865761U (en) * | 2014-06-07 | 2014-10-08 | 苏州歌拉瑞电梯有限公司 | Electromagnetic-control elevator safety tongs |
| CN203903709U (en) * | 2014-06-20 | 2014-10-29 | 苏州通润驱动设备股份有限公司 | Novel brake state detecting device |
| CN205500496U (en) * | 2016-04-22 | 2016-08-24 | 新疆维吾尔自治区特种设备检验研究院 | Device for preventing elevator is unexpected to be removed |
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| CN109019236A (en) | 2018-12-18 |
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