CN108773786B - Power supply breaking device for elevator brake - Google Patents
Power supply breaking device for elevator brake Download PDFInfo
- Publication number
- CN108773786B CN108773786B CN201810565396.2A CN201810565396A CN108773786B CN 108773786 B CN108773786 B CN 108773786B CN 201810565396 A CN201810565396 A CN 201810565396A CN 108773786 B CN108773786 B CN 108773786B
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- Prior art keywords
- elevator
- brake
- input end
- logic control
- voltage
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Elevator Control (AREA)
Abstract
The invention relates to an elevator brake control device, in particular to an elevator brake power supply breaking device. The brake includes: the DC/DC power supply conversion unit comprises an input loop, an AC/DC conversion module and a DC/DC power supply conversion unit; the logic control module: the control relay is connected with the elevator control relay, and logic control instructions are generated according to the on-off states of the elevator control relay; solid state switch: the signal output end is connected with the logic control module, receives a control instruction sent by the logic control module, controls output voltage and outputs the output voltage through the voltage output end; freewheel element module: and the voltage output end is connected with the solid-state switch and the output loop. The invention can realize no spark generation of the circuit when the power supply of the brake is disconnected; meanwhile, when the current of the brake coil is turned off, the counter electromotive force generated by the coil can be absorbed, so that the reliable braking of the elevator brake is ensured, the safety of the short-circuit device is ensured, and the brake is ensured to be free from delayed release.
Description
Technical Field
The invention relates to an elevator brake control device, in particular to an elevator brake power supply breaking device.
Background
The elevator brake is a braking component acting on a traction sheave of an elevator traction machine, an induction coil is arranged in the elevator brake, when the elevator runs, the induction coil of the elevator brake is electrified to enable a brake pad of the brake to leave the traction sheave, at the moment, the motor drives the traction sheave to rotate, and the traction sheave drives a steel wire rope to drive an elevator car to move upwards or downwards on a guide rail; when the elevator stops, the induction coil of the elevator brake is powered off to enable the brake pad of the brake to brake the traction sheave, and after braking, the elevator car is stopped on the guide rail through the traction sheave and the steel wire rope.
In the process, the elevator brake controls the brake pad to brake or not brake by switching off or switching on the induction coil of the elevator brake, the traditional brake control circuit is characterized in that two groups of contactor contacts are connected in series at two ends of the induction coil of the brake, when the two groups of contactor contacts are closed, the induction coil of the elevator brake is switched on, and the induction coil attracts the brake pad, so that the brake pad is far away from the brake disc and does not brake at the moment; when the two groups of contactor contacts are disconnected or one group of contactor contacts are disconnected, the induction coil of the elevator brake is powered off, and the induction coil releases the brake pad, so that the brake pad contacts the brake disc, and braking is realized. In the working process, as the working current of the elevator brake coil is direct current, the requirement for disconnecting the contactor contacts is high, the contactor disconnection direct current value with the same specification is one tenth of the disconnection alternating current value, and the contacts can generate larger sparks under the counter potential effect of the induction coil at the moment of disconnection, so that a spark eliminating circuit is often needed to be connected in order to avoid the sparks, but after the spark eliminating circuit is connected in, the induction coil generates follow current, the induction coil is easy to delay to release a brake pad, the timely braking of a brake disc is influenced, and potential safety hazards exist.
Disclosure of Invention
The invention aims to provide an elevator brake power supply breaking device which can avoid electric spark and timely control a brake to brake a brake disc.
The device comprises:
input loop: connecting an external commercial power supply line to obtain an elevator brake driving power supply;
an alternating current-direct current conversion module: the input interface is connected with the AC mains supply input and converts the AC mains supply input into DC output;
DC/DC power conversion unit: the logic control module is connected with the AC/DC conversion module, and is used for converting the DC voltage reduction isolation obtained by the conversion of the AC/DC conversion module into low-voltage DC and outputting the low-voltage DC to the logic control module for power supply;
the logic control module: the device comprises a logic processing unit, a signal input end and a signal output end, wherein the signal input end is connected with the logic processing unit; the signal input end is connected with the elevator control relay, the logic processing unit generates a logic control instruction according to the on-off state of the elevator control relay, and the logic control instruction is output through the signal output end;
solid state switch: the device comprises a signal input end, a voltage input end and a voltage output end, wherein the signal input end is connected with the signal output end of the logic control module and receives a control instruction sent by the logic control module, and the voltage input end is used for controlling output voltage according to the instruction sent by the logic control module and outputting the output voltage;
freewheel element module: the voltage output end is connected with the solid-state switch, and the reverse potential generated by the brake coil is absorbed at the moment that the solid-state switch is changed from on to off, so that the device is protected;
and the output loop is connected with the follow current element and used for connecting the controlled elevator brake.
Preferably, the signal input end of the logic control module comprises a first signal input end, a second signal input end and a third signal input end; the first signal input end is connected with a full-on switch of the elevator control relay, the second signal input end is connected with a full-off switch of the elevator control relay, and the third signal input end is connected with an 80% on switch of the elevator control relay.
Preferably, the logic control module is provided with one path of signal output end; the signal output end is connected with a solid-state switch, and the solid-state switch is connected with two brakes through an output loop.
Preferably, the logic control module is provided with two paths of signal output ends; the two paths of signal output ends are respectively connected with a solid switch, and each solid switch is respectively connected with a brake through an output loop.
Preferably, the input circuit comprises a first ac terminal and a second ac terminal, and the first ac terminal and the second ac terminal are respectively connected with an elevator contactor.
The elevator brake power supply circuit breaking device is matched with the control switch through the solid state circuit breaking device, so that no spark is generated on a circuit when the power supply of the brake is disconnected; meanwhile, when the current of the brake coil is turned off, the counter electromotive force generated by the coil can be absorbed, so that the reliable braking of the elevator brake and the safety of the short-circuit device are ensured; the circuit has no spark problem, so that the resistance of the follow current circuit of the brake can be larger, the magnetic force generated by the follow current is smaller than the braking pressure of the brake, and the non-delayed release of the brake is ensured.
Drawings
FIG. 1 is a schematic block diagram of a first embodiment of the present invention;
FIG. 2 is a detailed circuit diagram of a first embodiment of the present invention;
FIG. 3 is a schematic block diagram of a second embodiment of the present invention;
fig. 4 is a schematic block diagram of a second embodiment of the present invention.
Detailed Description
As shown in fig. 1, an elevator brake power breaking device of a first embodiment of the present invention includes
Input loop 1: connecting an external commercial power supply line to obtain an elevator brake to obtain a 110V/220V driving power supply;
ac/dc conversion module 2: the input interface is connected with the AC mains supply input and converts the AC mains supply input into DC output;
DC/DC power conversion unit 3: the power supply system is connected with the alternating current-direct current conversion module 2, and is used for converting direct current obtained by conversion of the alternating current-direct current conversion module 2 into low-voltage direct current for output to the logic control module for power supply;
logic control module 4: comprises a logic processing unit 41 and a signal input end 42 and a signal output end 43 which are connected with the logic processing unit 41; the signal input end 42 is connected with the elevator control relay, the logic processing unit 41 generates logic control instructions according to the on-off states of the elevator control relay, and the logic control instructions are output through the signal output end 43; the elevator control relay is an existing switch control device installed in an elevator operation control system, and the logic processing unit 41 is connected with the switch control device to obtain the switch state of the elevator control relay as a basis for logic processing judgment.
Solid state switch 5: the device comprises a signal input end 51, a voltage input end 52 and a voltage output end 53, wherein the signal input end 51 is connected with the signal output end 43 of the logic control module 4 and receives a control instruction sent by the logic control module 4, and controls output voltage according to the instruction sent by the logic control module 4 and is output by the voltage output end; by using solid state switches, the generation of sparks is avoided, as the solid state switches are contactless open and contact when switching is performed.
Freewheel element module 6: the voltage output end is connected with the solid-state switch 5, and absorbs reverse potential generated by the brake coil at the moment that the solid-state switch is changed from on to off, so as to protect the device;
an output circuit 7, connected to the freewheel element 6, for connecting the controlled elevator brake.
As shown in fig. 2, in a specific circuit device arrangement and connection, the signal input terminal 41 of the logic control module 4 includes a first signal input terminal C1-C2, a second signal input terminal G1-G2, and a third signal input terminal F1-F2; the first signal input ends C1-C2 are connected with the full-on switch BC of the elevator control relay, the second signal input ends are connected with the full-off switch of the elevator control relay, and the third signal input ends are connected with the 80% on switch of the elevator control relay.
And when logic judgment is carried out, the first working state is in a full-conduction state. The control input logic is as follows: when bc=on, bg=off, bf=off, the output control command causes the solid state switch output voltage to be equal to the input voltage
And in the second working state, 80% conducting state. The control input logic is as follows: when bc=on, bg=off, bf=on, the output control command causes the solid state switch output voltage to equal 80% of the input voltage value. After the elevator brake coil is electrified (not braked), the voltage of the coil can be reduced to 80% of the rated voltage, and the coil can still keep the non-braked operation at the moment, so that the temperature of the coil can be reduced. Preventing the loss of magnetism of the brake iron core from being out of control due to overheat of the coil.
And in the third working state, the device is completely shut down. The control input logic is as follows: bc=x, bg=on, bf=x, and the output control command makes the solid state switch output voltage equal to 0, and no output.
In this embodiment, the logic control module 4 is provided with one path of signal output terminals GA; the signal output GA is connected to a solid state switch 5, which solid state switch 5 is connected to two brakes via an output circuit 7.
According to the national standard GB7588-2003< elevator manufacturing and installation safety code >12.4.2.31, the brake current is cut off, at least two separate electrical devices are applied, the "elevator stopping must be achieved by means of brake braking, the standard requiring the cutting off of the brake current, two separate electrical devices being necessary to open the circuit. In this embodiment, the input circuit 1 includes a first ac terminal U1 and a second ac terminal U2, the first ac terminal U1 is connected to an elevator contactor BKA, and the second ac terminal U2 is connected to an elevator contactor BKB.
Considering the requirements of the safety standard of the elevator brake, each traction machine is required to be provided with two brakes, so that the solid-state circuit breaker is required to control the current of the two brakes on and off, the total current of the brakes of the traction machine with smaller power is smaller, and the circuit module of one solid-state circuit breaker in the first embodiment can be used for setting under the condition that the working current is smaller than 5A.
In order to adapt to the control environment with the working current larger than 5A, a second embodiment is further provided on the basis of the first embodiment,
in the second embodiment, the configuration and logic control module 4 of the input circuit and the signal input and signal processing logic are basically the same as those of the first embodiment, and are not repeated here, and the main difference is that the logic control module is provided with two paths of signal output ends; the two signal output ends are respectively connected with a solid-state switch 5 and 5', the solid-state switch 5 is connected with a brake BKA through one path of freewheel element module 6 and an output loop 7, and the solid-state switch 5' is connected with a brake BKB through one path of freewheel element module 6 'and the output loop 7'.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the invention.
Claims (4)
1. Elevator stopper power circuit breaker, its characterized in that: comprising the following steps:
input loop: connecting an external commercial power supply line to obtain an elevator brake driving power supply;
an alternating current-direct current conversion module: the input interface is connected with the AC mains supply input and converts the AC mains supply input into DC output;
DC/DC power conversion unit: the logic control module is connected with the AC/DC conversion module, and is used for converting the DC voltage reduction isolation obtained by the conversion of the AC/DC conversion module into low-voltage DC and outputting the low-voltage DC to the logic control module for power supply;
the logic control module: the device comprises a logic processing unit, a signal input end and a signal output end, wherein the signal input end is connected with the logic processing unit; the signal input end is connected with the elevator control relay, the logic processing unit generates a logic control instruction according to the on-off state of the elevator control relay, and the logic control instruction is output through the signal output end;
solid state switch: the device comprises a signal input end, a voltage input end and a voltage output end, wherein the signal input end is connected with the signal output end of the logic control module and receives a control instruction sent by the logic control module, and the voltage input end is used for controlling output voltage according to the instruction sent by the logic control module and outputting the output voltage;
freewheel element module: the voltage output end is connected with the solid-state switch, and the reverse potential generated by the brake coil is absorbed at the moment that the solid-state switch is changed from on to off, so that the device is protected;
an output loop connected with the freewheel element for connecting the controlled elevator brake;
the signal input end of the logic control module comprises a first signal input end, a second signal input end and a third signal input end; the first signal input end is connected with a full-on switch of the elevator control relay, the second signal input end is connected with a full-off switch of the elevator control relay, and the third signal input end is connected with an 80% on switch of the elevator control relay.
2. The elevator brake power circuit interrupting device of claim 1 wherein: the logic control module is provided with one path of signal output end; the signal output end is connected with a solid-state switch, and the solid-state switch is connected with two brakes through an output loop.
3. The elevator brake power circuit interrupting device of claim 1 wherein: the logic control module is provided with two paths of signal output ends; the two paths of signal output ends are respectively connected with a solid switch, and each solid switch is respectively connected with a brake through an output loop.
4. An elevator brake power circuit interrupting device as claimed in any one of claims 1-3, characterized in that: the input loop comprises a first alternating current terminal and a second alternating current terminal, and the first alternating current terminal and the second alternating current terminal are respectively connected with an elevator contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810565396.2A CN108773786B (en) | 2018-06-04 | 2018-06-04 | Power supply breaking device for elevator brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810565396.2A CN108773786B (en) | 2018-06-04 | 2018-06-04 | Power supply breaking device for elevator brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108773786A CN108773786A (en) | 2018-11-09 |
| CN108773786B true CN108773786B (en) | 2023-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810565396.2A Active CN108773786B (en) | 2018-06-04 | 2018-06-04 | Power supply breaking device for elevator brake |
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| Country | Link |
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| CN (1) | CN108773786B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI823303B (en) * | 2022-03-23 | 2023-11-21 | 辛耘企業股份有限公司 | Lifting equipment with anti-drop function and first braking device |
| CN115123889A (en) * | 2022-05-30 | 2022-09-30 | 菱王电梯有限公司 | Elevator control circuit and elevator system |
| CN115490105B (en) * | 2022-10-25 | 2023-12-01 | 菱王电梯有限公司 | Processing module, acquisition module and elevator control system of elevator encoder signal |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4984659A (en) * | 1988-02-01 | 1991-01-15 | Mitsubishi Denki Kabushiki Kaisha | Elevator control apparatus |
| CN201538620U (en) * | 2009-07-08 | 2010-08-04 | 石家庄五龙制动器有限公司 | Control circuit of elevator brake system |
| CN102123928A (en) * | 2008-08-18 | 2011-07-13 | 因温特奥股份公司 | Method for monitoring a brake system in an elevator system and corresponding brake monitor for an elevator system |
| CN106477403A (en) * | 2016-12-27 | 2017-03-08 | 张敏勇 | Elevator electromagnetic control apparatus and system |
| CN206940151U (en) * | 2017-06-23 | 2018-01-30 | 何根巨 | A kind of elevator faults emergency self-saving system |
| CN107840219A (en) * | 2017-11-21 | 2018-03-27 | 广州广日电气设备有限公司 | Band-type brake coil control circuit, method, band-type brake control power-supply device and elevator |
| CN208561540U (en) * | 2018-06-04 | 2019-03-01 | 菱王电梯股份有限公司 | Elevator brake Power Supply breaking system |
-
2018
- 2018-06-04 CN CN201810565396.2A patent/CN108773786B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4984659A (en) * | 1988-02-01 | 1991-01-15 | Mitsubishi Denki Kabushiki Kaisha | Elevator control apparatus |
| CN102123928A (en) * | 2008-08-18 | 2011-07-13 | 因温特奥股份公司 | Method for monitoring a brake system in an elevator system and corresponding brake monitor for an elevator system |
| CN201538620U (en) * | 2009-07-08 | 2010-08-04 | 石家庄五龙制动器有限公司 | Control circuit of elevator brake system |
| CN106477403A (en) * | 2016-12-27 | 2017-03-08 | 张敏勇 | Elevator electromagnetic control apparatus and system |
| CN206940151U (en) * | 2017-06-23 | 2018-01-30 | 何根巨 | A kind of elevator faults emergency self-saving system |
| CN107840219A (en) * | 2017-11-21 | 2018-03-27 | 广州广日电气设备有限公司 | Band-type brake coil control circuit, method, band-type brake control power-supply device and elevator |
| CN208561540U (en) * | 2018-06-04 | 2019-03-01 | 菱王电梯股份有限公司 | Elevator brake Power Supply breaking system |
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| Publication number | Publication date |
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| CN108773786A (en) | 2018-11-09 |
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| CB02 | Change of applicant information |
Address after: 528200 North Park of Shishan Science and Technology Industrial Park, Shishan town, Nanhai District, Foshan City, Guangdong Province Applicant after: Lingwang Elevator Co.,Ltd. Address before: 528200 North Park of Shishan Science and Technology Industrial Park, Shishan town, Nanhai District, Foshan City, Guangdong Province Applicant before: WINONE ELEVATOR Co.,Ltd. |
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