CN112383133A - Starting control circuit and method of automatic rescue device and elevator - Google Patents

Starting control circuit and method of automatic rescue device and elevator Download PDF

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Publication number
CN112383133A
CN112383133A CN202011264638.8A CN202011264638A CN112383133A CN 112383133 A CN112383133 A CN 112383133A CN 202011264638 A CN202011264638 A CN 202011264638A CN 112383133 A CN112383133 A CN 112383133A
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China
Prior art keywords
power supply
circuit
power
emergency rescue
elevator
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Granted
Application number
CN202011264638.8A
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Chinese (zh)
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CN112383133B (en
Inventor
葛翔
黄杰
王力虎
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Schindler China Elevator Co Ltd
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Schindler China Elevator Co Ltd
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Priority to CN202011264638.8A priority Critical patent/CN112383133B/en
Publication of CN112383133A publication Critical patent/CN112383133A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/021—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Power Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

A starting control circuit and a control method for an automatic rescue device of an elevator and the elevator are provided, wherein the circuit comprises: power main switch and power control panel. The power main switch includes: a main contact and a normally open auxiliary contact. The power control board includes: self-monitoring circuit and automatic rescue starting circuit. The automatic rescue starting circuit includes: the circuit switching control relay comprises a first contactor, a second contactor and a circuit switching control relay. The self-monitoring circuit is used for being connected with two contacts of the normally-open auxiliary contact. And the circuit switching control relay is connected with the first contactor and the second contactor and is connected with the control end of the emergency rescue power supply. The circuit switching control relay is configured to: and controlling whether the emergency rescue power supply is started or not and controlling the emergency rescue power supply or a power grid to supply power to the elevator according to the monitoring result of the self-monitoring circuit. And two contacts in the normally open auxiliary contacts are also used for being respectively connected to a control end of the emergency rescue power supply and a circuit switching control relay.

Description

Starting control circuit and method of automatic rescue device and elevator
Technical Field
The disclosure belongs to the technical field of elevator control, and relates to a starting control circuit and a control method of an automatic rescue device and an elevator.
Background
The Chinese regulation elevator supervision and inspection and regular inspection rule-traction and forced drive elevator (TSG T7001-2009, including No. 1 modification list and No. 2 modification list) No. 2.8(9) and the provision of the elevator automatic rescue device are as follows: "a non-automatic reset switch is needed, and when the switch is in a closed state, the automatic rescue device can not start rescue operation".
Some elevator manufacturers adopt a split type automatic rescue device which is relatively independent of an elevator control system to realize automatic rescue in the case of power failure or power grid failure. Such a separate type automatic rescue apparatus is generally installed on a wall of a machine room or an upper end of a hoistway in a wall-mounted type relatively independently. The device is generally provided with a required start control switch independently.
Some manufacturers also use integrated automatic rescue devices that are integrated with their elevator control systems. The main functional components of this type of automatic rescue device include: the battery, the inverter, the control panel, the contactor and the like are integrated in the control cabinet.
In order to meet the above-mentioned requirements of the inspection standards, it is common practice to add a non-automatic reset mechanical switch to the starting control circuit of the device in the control cabinet. However, the technical scheme not only increases the cost of the elevator, but also has the disadvantages of troublesome implementation and installation, such as being possibly limited by the space of the original cabinet body, needing to additionally arrange the mounting bracket, needing to additionally arrange the mounting hole and the like.
Disclosure of Invention
Technical problem to be solved
The present disclosure provides a start control circuit, a control method and an elevator of an automatic rescue device to at least partially solve the technical problems set forth above.
(II) technical scheme
A first aspect of the present disclosure provides a start control circuit for an automatic rescue apparatus of an elevator. The start control circuit includes: power main switch and power control panel. The power main switch includes: a main contact and a normally open auxiliary contact. The main contacts are used for connecting to the live, neutral and ground wires of the power grid. The power control board includes: self-monitoring circuit and automatic rescue starting circuit. The automatic rescue starting circuit includes: the circuit switching control relay comprises a first contactor, a second contactor and a circuit switching control relay. The self-monitoring circuit is used for being connected with two contacts of the normally-open auxiliary contact to monitor whether the power grid is powered off or not. The first contactor is used for controlling the on-off of the power supply of the elevator by the power grid. The second contactor is used for controlling the on-off of the power supply of the emergency rescue power supply to the elevator. And the circuit switching control relay is connected with the first contactor and the second contactor and is connected with the control end of the emergency rescue power supply. The circuit switching control relay is configured to: and controlling whether the emergency rescue power supply is started or not according to the monitoring result of the self-monitoring circuit and controlling the emergency rescue power supply or a power grid to supply power to the elevator according to the monitoring result of the self-monitoring circuit. And two contacts in the normally open auxiliary contacts are also used for being respectively connected to a control end of the emergency rescue power supply and a circuit switching control relay.
According to this disclosed embodiment, whether control emergency rescue power according to the monitoring result from monitoring circuit turns on, include: and if the power grid is monitored to be powered off, controlling the emergency rescue power supply to be started. According to the monitoring result from monitoring circuit come control emergency rescue power or electric wire netting to supply power to the elevator, include: and if the power grid is monitored to be powered off, controlling the emergency rescue power supply to supply power to the elevator and cutting off the power supply of the power grid to the elevator.
According to this disclosed embodiment, whether control emergency rescue power according to the monitoring result from monitoring circuit turns on, include: and if the power grid is monitored to be electrified, controlling the emergency rescue power supply to be turned off. According to the monitoring result from monitoring circuit come control emergency rescue power or electric wire netting to supply power to the elevator, include: and if the power grid is monitored to be electrified, controlling the power grid to supply power to the elevator and cutting off the power supply of the emergency rescue power supply to the elevator.
According to an embodiment of the present disclosure, the first contactor has an interlocking relationship with the second contactor, and power supply to the coil of the second contactor is cut off while the coil of the first contactor is supplied with power.
According to an embodiment of the present disclosure, a circuit switching control relay includes: a first secondary switching contact and a second secondary switching contact. The first auxiliary conversion contact is used for controlling the emergency rescue power supply to be started when the circuit switching control relay is powered on so as to supply power to the elevator. The second pair of switching contacts is used for realizing the switching of power supply of the elevator from the power grid to the emergency rescue power supply to the power supply of the elevator when the circuit switching control relay is electrified, and the coil of the first contactor and the coil of the second contactor are connected with the second pair of switching contacts.
According to an embodiment of the disclosure, the circuit-switching control relay is further configured to: with emergency rescue power electric connection, and the break-make of connection is controlled by control signal, when the electric wire netting outage, emergency rescue power switches on with being connected of circuit switching control relay under control signal's control to supply power for circuit switching control relay (the direct current power based on emergency rescue power supplies power to circuit switching control relay).
According to the embodiment of the disclosure, in an automatic rescue scene, a main contact and a normally open auxiliary contact of a power main switch are switched on. If the self-monitoring circuit monitors that the power grid is powered off, the emergency rescue power supply (specifically, a direct current power supply in the emergency rescue power supply) supplies power to the circuit switching control relay, so that the circuit switching control relay is powered on, and the circuit switching control relay in the powered state sends a starting signal to a control end of the emergency rescue power supply, so that the emergency rescue power supply (specifically, a direct current-alternating current conversion unit in the emergency rescue power supply) is started to supply power to the elevator; the circuit switching control relay under the power-on state enables the first contactor to be conducted and the second contactor to be cut off so as to control the emergency rescue power supply to supply power to the elevator and cut off the power supply of the power grid to the elevator.
According to an embodiment of the present disclosure, an emergency rescue power supply includes: a DC power supply and a DC-AC conversion unit. The DC-AC conversion unit is electrically connected with the DC power supply to convert the DC power supplied by the DC power supply into AC power. And the control end of the direct current-alternating current conversion unit is used as the control end of the emergency rescue power supply and is respectively connected with one of the two contacts in the circuit switching control relay and the normally open auxiliary contact, and the other of the two contacts is connected with the circuit switching control relay, so that the circuit switching control relay controls whether the direct current-alternating current conversion unit is started or not according to the monitoring result of the self-monitoring circuit. The direct current power supply is electrically connected with the circuit switching control relay, the connection and disconnection of the direct current power supply and the circuit switching control relay are controlled by a control signal, and when the power grid is powered off, the direct current power supply is connected and conducted with the circuit switching control relay under the control of the control signal so as to supply power for the circuit switching control relay.
A second aspect of the present disclosure provides a control method based on the above start-up control circuit. The control method comprises the following steps: in an automatic rescue scene, operating a main switch of a power supply to turn off a main contact and a normally open auxiliary contact; two contacts of the normally open auxiliary contact are connected with a self-monitoring circuit to monitor whether the power grid is powered off or not; two contacts in the normally open auxiliary contacts are also respectively connected to a control end of the emergency rescue power supply and a circuit switching control relay; the circuit switching control relay controls whether the emergency rescue power supply is started or not according to the monitoring result of the self-monitoring circuit and controls the emergency rescue power supply or a power grid to supply power to the elevator according to the monitoring result of the self-monitoring circuit.
A third aspect of the present disclosure provides an elevator. The elevator comprises: automatic rescue device, automatic rescue device include any kind of start control circuit as described above. The automatic rescue device comprises: a split type automatic rescue device which is relatively independent of the elevator control system, or an integrated type automatic rescue device which is integrated with the elevator control system.
(III) advantageous effects
According to the technical scheme, the starting control circuit, the control method and the elevator of the automatic rescue device have the following beneficial effects:
a pair of normally open auxiliary contacts of the power main switch are connected to the self-monitoring circuit and are also connected to the automatic rescue starting circuit, on-off operation of the normally open auxiliary contacts is used as a manual starting control signal of automatic rescue, and the circuit switching control relay can control whether the emergency rescue power supply is opened or not according to a monitoring result of the self-monitoring circuit and control the emergency rescue power supply or a power grid to supply power to the elevator according to the monitoring result of the self-monitoring circuit. In an automatic rescue scene, a main contact and a normally open auxiliary contact of a power supply main switch are in a connected state at the same time, so that a circuit switching control relay can control an emergency rescue power supply to be started and supply power to an elevator under the condition that the power grid is monitored to be powered off, and automatic rescue is realized; when the main switch of the power supply is disconnected, the normally open auxiliary contact in the main switch connected into the automatic rescue starting circuit enables the automatic rescue starting circuit to be disconnected, the starting control method is simple, only the correct connection of the circuit needs to be ensured, the method is suitable for a split type automatic rescue device and an integrated type automatic rescue device, the starting control does not additionally occupy the internal space of the elevator, the original device layout of a control cabinet does not need to be changed, an installation support does not need to be added, additional punching and the like on the original cabinet body are not needed, the implementation is easy, and the cost is lower; the starting control circuit is ingenious in design, does not need to be additionally provided with a self-reset switch, and is high in reliability.
Drawings
Fig. 1 is a schematic structural diagram of a start control circuit of an automatic rescue device according to an embodiment of the disclosure.
Fig. 2 is a simplified schematic diagram illustrating a circuit connection relationship of a main switch according to an embodiment of the disclosure.
Fig. 3 is a detailed structural diagram of a start-up control circuit without a self-monitoring circuit according to an embodiment of the disclosure.
Fig. 4 is a schematic diagram illustrating a principle that the start control circuit implements automatic rescue after monitoring power outage of a power grid in an automatic rescue scene according to the embodiment of the disclosure.
Fig. 5 is a flowchart of a control method based on a start-up control circuit according to an embodiment of the disclosure.
Detailed Description
The starting control method is simple, only the correct connection of the circuit needs to be ensured, and the starting control method is suitable for a split type automatic rescue device and an integrated type automatic rescue device, the starting control does not additionally occupy the internal space of the elevator, the original device layout of a control cabinet does not need to be changed, an installation support does not need to be added, the implementation is easy without additionally punching on the original cabinet body, and the like, and the cost is lower; the starting control circuit is ingenious in design, does not need to be additionally provided with a self-reset switch, and is high in reliability.
For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
A first exemplary embodiment of the present disclosure provides a start control circuit for an automatic rescue apparatus of an elevator.
Fig. 1 is a schematic structural diagram of a start control circuit of an automatic rescue device according to an embodiment of the disclosure. Fig. 2 is a simplified schematic diagram illustrating a circuit connection relationship of a main switch according to an embodiment of the disclosure. The wiring in fig. 1 illustrates the electrical connection relationship, and in order to illustrate the two paths for supplying power, the wiring with a single arrow and the wiring with a double arrow are used to illustrate the two paths for supplying power.
Referring to fig. 1 and 2, a start-up control circuit of an embodiment of the present disclosure includes: power main switch JH and power control board SEM. The power supply main switch JH includes: a main contact and a normally open auxiliary contact. The power control board SEM includes: self-monitoring circuit and automatic rescue starting circuit. The automatic rescue starting circuit includes: a first contactor SH, a second contactor REF, and a circuit switching control relay RAE. The self-monitoring circuit is used for being connected with two contacts of the normally-open auxiliary contact to monitor whether the power grid is powered off or not. The first contactor SH is used for controlling the on-off of the power supply of the elevator by the power grid. And the second contactor REF is used for controlling the on-off of the power supply of the emergency rescue power supply to the elevator. And the circuit switching control relay RAE is connected with the first contactor and the second contactor and is connected with a control end of the emergency rescue power supply. The circuit-switching control relay RAE is configured to: and controlling whether the emergency rescue power supply is started or not according to the monitoring result of the self-monitoring circuit and controlling the emergency rescue power supply or a power grid to supply power to the elevator according to the monitoring result of the self-monitoring circuit. And two contacts in the normally open auxiliary contacts are also used for being respectively connected to a control end of an emergency rescue power supply and a circuit switching control relay RAE.
The power supply main switch JH includes: a main contact and a normally open auxiliary contact. The main contacts are used for connecting to the live, neutral and ground wires of the power grid. In fig. 2, the live lines of the power grid supplying three-phase power are indicated by L1, L2 and L3, respectively, the neutral line is indicated by N, and the ground line is indicated by PE. The main contact of the power main switch comprises: the contact 11 and the contact 12 are connected with the live wire L1 to form a switch for controlling the on-off of the live wire L1; the contact 13 and the contact 14 are connected with the live line L2 to form a switch for controlling the on-off of the live line L2; the contact 15 and the contact 16 are connected with the live line L3 to form a switch for controlling the on-off of the live line L3; and a contact 17/N and a contact 18/N connected to the neutral wire N, forming a switch for controlling the on-off of the neutral wire N. The normally open auxiliary contact includes: a contact 101 and a contact 102. Contacts 101 and 102 are located in two circuit loops, where in one circuit loop contacts 101 and 102 are connected to a self-monitoring circuit and in the other circuit loop contacts 101 and 102 are connected to an automatic rescue initiation circuit.
The power main switch JH may be a circuit breaker or a disconnector.
Based on the on/on and off/off control of the normally open auxiliary contact in the power main switch JH, the automatic rescue mode of the power grid can be turned on and off, when the automatic rescue mode is turned on, the normally open auxiliary contact in the power main switch can be operated to be turned on, so that the manual start of the automatic rescue is realized, and in the automatic rescue mode, the operation of the automatic rescue is implemented according to the power supply state of monitoring whether the power grid is powered off, which will be described in detail later with reference to fig. 4.
Fig. 3 is a detailed structural diagram of a start-up control circuit without a self-monitoring circuit according to an embodiment of the disclosure.
According to an embodiment of the present disclosure, the power control board SEM includes: self-monitoring circuit and automatic rescue starting circuit. The self-monitoring circuit is used to connect with two contacts of the normally open auxiliary contact (e.g., contacts 101 and 102 in the examples of fig. 2 and 3) to monitor whether the grid is powered down.
Two of the normally open auxiliary contacts are exemplified by contact 101 and contact 102, wherein the two contacts 101 and 102 are in two circuit loops, in one of which the contact 101 and the contact 102 are connected to the self-monitoring circuit of the power supply control board SEM. For simplicity of illustration, the self-monitoring circuit in the power supply control board SEM is omitted from illustration in fig. 3, and only one circuit of the contact 101 and the contact 102 is connected to the power supply control board SEM for illustration.
Referring to fig. 3, the automatic rescue starting circuit includes: a first contactor SH, a second contactor REF, and a circuit switching control relay RAE.
According to an embodiment of the present disclosure, referring to fig. 3, the first contactor SH has an interlocking relationship with the second contactor REF, and power supply to the coil of the second contactor REF is cut off while power is supplied to the coil of the first contactor SH.
Referring to fig. 3, in the other of the two circuit loops in which the normally open auxiliary contact is located, in order to facilitate the description of distinguishing the two loops, the connection point extending from the contact 101 is represented by JAES1Illustratively, the connection point extending from the contact 102 is JAES2To illustrate, contact 101 passes through connection point JAES1Connected to a circuit-switching control relay RAE in the power control board SEM, the contact 102 is connected to the point JAES2And the control end is connected to the emergency rescue power supply.
Referring to fig. 3, the circuit switching control relay RAE is electrically connected to the control terminal of the emergency rescue power supply, and the circuit switching control relay RAE is connected to the contact 101 and the connection point JAES1Control switch L and connection point JAES2And the contact points 102 constitute a circuit that switches the control relay RAE to send a control signal corresponding to whether the emergency power supply is on, which is represented by an on/off control signal in fig. 3. While the circuit switching control relay RAE is also in contact with the first contactor SH and the second contactorThe connector is electrically connected with the REF, and can perform alternative conduction control on the first contactor SH and the second contactor connection REF.
The above-described circuit switching control relay RAE is configured to: and controlling whether the emergency rescue power supply is started or not according to the monitoring result of the self-monitoring circuit and controlling the emergency rescue power supply or a power grid to supply power to the elevator according to the monitoring result of the self-monitoring circuit.
According to this disclosed embodiment, whether control emergency rescue power according to the monitoring result from monitoring circuit turns on, include: and if the power grid is monitored to be powered off, controlling the emergency rescue power supply to be started. According to the monitoring result from monitoring circuit come control emergency rescue power or electric wire netting to supply power to the elevator, include: and if the power grid is monitored to be powered off, controlling the emergency rescue power supply to supply power to the elevator and cutting off the power supply of the power grid to the elevator.
According to this disclosed embodiment, whether control emergency rescue power according to the monitoring result from monitoring circuit turns on, include: and if the power grid is monitored to be electrified, controlling the emergency rescue power supply to be turned off. According to the monitoring result from monitoring circuit come control emergency rescue power or electric wire netting to supply power to the elevator, include: and if the power grid is monitored to be electrified, controlling the power grid to supply power to the elevator and cutting off the power supply of the emergency rescue power supply to the elevator.
According to an embodiment of the present disclosure, referring to fig. 3, the circuit-switching control relay RAE includes: a first secondary switching contact and a second secondary switching contact. The first auxiliary conversion contact (the leftmost conversion contact, corresponding to the control switch L) is used for controlling the starting of the emergency rescue power supply when the circuit switching control relay is powered on. And the second auxiliary switching contact (the rightmost switching contact which is respectively connected to coils of SH and REF) is used for realizing the switching of power supply of the elevator from the power grid to the emergency rescue power supply when the circuit switching control relay is electrified, and the coil of the first contactor and the coil of the second contactor are connected with the second auxiliary switching contact.
According to an embodiment of the present disclosure, as shown with reference to a dotted line block in fig. 3, an emergency rescue power supply includes: a direct current power supply and a direct current-to-alternating current conversion unit, which is represented as a DC-AC conversion unit in fig. 3. The DC-AC conversion unit is electrically connected with the DC power supply to convert the DC power supplied by the DC power supply into AC power. And the control end of the direct current-alternating current conversion unit is used as the control end of the emergency rescue power supply and is respectively connected with one of the two contacts in the circuit switching control relay and the normally open auxiliary contact, and the other of the two contacts is connected with the circuit switching control relay, so that the circuit switching control relay controls whether the direct current-alternating current conversion unit is started or not according to the monitoring result of the self-monitoring circuit. The direct current power supply is electrically connected with the circuit switching control relay, the connection and disconnection of the direct current power supply and the circuit switching control relay are controlled by a control signal, and when the power grid is powered off, the direct current power supply is connected and conducted with the circuit switching control relay under the control of the control signal so as to supply power for the circuit switching control relay.
In the example of fig. 3, the connection point of the dc power supply supplying the circuit-switching control relay RAE is illustrated with a contact of 24V-NSG. The dc power supply may be a battery stack comprising two batteries BAT1 and BAT2, for example providing 24V dc power to a circuit switching control relay RAE; meanwhile, the direct-current power supply also generates alternating current after direct-current-alternating-current conversion is carried out through the direct-current-alternating-current conversion unit to serve as an emergency rescue power supply, and single-phase 230V alternating current is output under the control action of a circuit switching control relay RAE and supplied to a frequency converter and a car door motor for automatic rescue.
Fig. 4 is a schematic diagram illustrating a principle that the start control circuit implements automatic rescue after monitoring power outage of a power grid in an automatic rescue scene according to the embodiment of the disclosure.
According to an embodiment of the present disclosure, as shown in conjunction with fig. 3 and 4, according to an embodiment of the present disclosure, the circuit-switching control relay is further configured to: with emergency rescue power electric connection, and the break-make of connecting is controlled by control signal, and when the electric wire netting outage, emergency rescue power switches on with being connected of circuit switching control relay under control signal's control to supply power for circuit switching control relay. Specifically, a direct current power supply based on an emergency rescue power supply supplies power to a circuit switching control relay.
According to the embodiment of the disclosure, in an automatic rescue scene, a main contact and a normally open auxiliary contact of a power main switch are switched on. The on-off operation of the normally open auxiliary contact is used as a manual starting control signal for automatic rescue, at the moment, in a starting loop of the emergency rescue power supply, the normally open auxiliary contact is in a connection state, whether the control switch L is in the connection state also depends on the control of the circuit switching control relay RAE, and whether the circuit switching control relay RAE controls the emergency rescue power supply to be opened or not according to a monitoring result of the self-monitoring circuit. If the self-monitoring circuit monitors that the power grid is powered off, the emergency rescue power supply (specifically, a direct current power supply in the emergency rescue power supply) supplies power to the circuit switching control relay, so that the circuit switching control relay is powered on, and the circuit switching control relay in the powered state sends a starting signal to a control end of the emergency rescue power supply, so that the emergency rescue power supply (specifically, a direct current-alternating current conversion unit in the emergency rescue power supply) is started to supply power to the elevator; the circuit switching control relay RAE in the power-on state enables the first contactor SH to be conducted and the second contactor REF to be cut off so as to control the emergency rescue power supply to supply power to the elevator and cut off the power supply of the power grid to the elevator.
The starting control circuit of this embodiment, when connecting a pair of normally open auxiliary contact of power main switch in from monitoring circuit, still be connected to automatic rescue starting circuit, the manual start control signal as automatic rescue is operated as to the break-make operation of normally open auxiliary contact, and circuit switching control relay can come whether control emergency rescue power is opened and come control emergency rescue power or the electric wire netting is supplied power to the elevator according to the monitoring result from monitoring circuit. In an automatic rescue scene, a main contact and a normally open auxiliary contact of a power supply main switch are in a connected state at the same time, so that a circuit switching control relay can control an emergency rescue power supply to be started and supply power to an elevator under the condition that the power grid is monitored to be powered off, and automatic rescue is realized; when the main switch of the power supply is disconnected, the normally open auxiliary contact in the main switch connected into the automatic rescue starting circuit enables the automatic rescue starting circuit to be disconnected, the starting control method is simple, only the correct connection of the circuit needs to be ensured, the method is suitable for a split type automatic rescue device and an integrated type automatic rescue device, the starting control does not additionally occupy the internal space of the elevator, the original device layout of a control cabinet does not need to be changed, an installation support does not need to be added, additional punching and the like on the original cabinet body are not needed, the implementation is easy, and the cost is lower; the starting control circuit is ingenious in design, does not need to be additionally provided with a self-reset switch, and is high in reliability.
A second exemplary embodiment of the present disclosure provides a control method based on the above-described start-up control circuit.
Fig. 5 is a flowchart of a control method based on a start-up control circuit according to an embodiment of the disclosure.
Referring to fig. 5, the control method of the present embodiment includes the steps of: s21, S22, and S23.
In step S21, in the automatic rescue scenario, the power main switch is operated such that the main contact and the normally open auxiliary contact are both closed.
In step S22, two contacts of the normally open auxiliary contact are connected to the self-monitoring circuit to monitor whether the power grid is powered off; two contacts in the normally open auxiliary contacts are also respectively connected to a control end of the emergency rescue power supply and a circuit switching control relay.
In step S23, the circuit switching control relay controls whether the emergency rescue power supply is turned on according to the monitoring result of the self-monitoring circuit and controls the emergency rescue power supply or the power grid to supply power to the elevator according to the monitoring result of the self-monitoring circuit.
The control method of the automatic rescue is simple, only the correct connection of the circuit needs to be ensured, the control method is suitable for a split type automatic rescue device and an integrated type automatic rescue device, starting control does not additionally occupy the internal space of the elevator, the original device layout of a control cabinet does not need to be changed, an installation support does not need to be added, additional punching on the original cabinet body is not needed, and the like, and the control method is easy to implement and has lower cost; the starting control circuit is ingenious in design, does not need to be additionally provided with a self-reset switch, and is high in reliability.
A third aspect of the present disclosure provides an elevator. The elevator comprises: automatic rescue device, automatic rescue device include any kind of start control circuit as described above.
The automatic rescue device comprises: a split type automatic rescue device which is relatively independent of the elevator control system, or an integrated type automatic rescue device which is integrated with the elevator control system.
In summary, the embodiments of the present disclosure provide a start control circuit, a control method, and an elevator for an automatic rescue apparatus of an elevator, in which a pair of normally open auxiliary contacts of a power main switch is connected to a self-monitoring circuit and also connected to an automatic rescue start circuit, and the on-off operation of the normally open auxiliary contacts is used as a manual start control signal for automatic rescue. The starting control method is simple, only the correct connection of the circuit needs to be ensured, the starting control does not additionally occupy the internal space of the elevator, the original device layout of the control cabinet does not need to be changed, an installation support does not need to be added, the original cabinet body does not need to be additionally perforated, and the like, and the method is easy to implement, has lower cost and has wide applicability.
The use of ordinal numbers such as "first," "second," "third," etc., in the specification and claims to modify a corresponding element does not by itself connote any ordinal number of the element or any ordering of one element from another or the order of manufacture, and the use of the ordinal numbers is only used to distinguish one element having a certain name from another element having a same name.
Furthermore, the word "comprising" or "comprises" does not exclude the presence of elements or steps other than those listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
Unless a technical obstacle or contradiction exists, the above-described various embodiments of the present disclosure may be freely combined to form further embodiments, which are all within the scope of protection of the present disclosure.
Unless otherwise defined, the same reference numerals in the embodiments of the present disclosure and the drawings denote the same meanings. In the drawings used to describe embodiments of the present disclosure, the thickness of a layer or region is exaggerated for clarity; also, in the drawings of some embodiments of the present disclosure, only the structures related to the concept of the present disclosure are shown, and other structures may refer to general designs. In addition, some drawings only illustrate the basic structure of the embodiments of the present disclosure, and the detailed parts are omitted.
The above embodiments are provided to further explain the purpose, technical solutions and advantages of the present disclosure in detail, and it should be understood that the above embodiments are merely exemplary of the present disclosure and are not intended to limit the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims (10)

1. A start control circuit for an automatic rescue apparatus of an elevator, characterized by comprising:
a power supply main switch, the power supply main switch comprising: a main contact for connection to live, neutral and ground lines of an electrical network; and a normally open auxiliary contact; and
a power control board, the power control board comprising:
the self-monitoring circuit is used for being connected with two contacts of the normally-open auxiliary contact so as to monitor whether the power grid is powered off or not;
an automatic rescue initiation circuit comprising:
the first contactor is used for controlling the on-off of the power supply of the elevator by the power grid;
the second contactor is used for controlling the on-off of the emergency rescue power supply for supplying power to the elevator; and
the circuit switching control relay is connected with the first contactor and the second contactor and is connected with the control end of the emergency rescue power supply; the circuit switching control relay is configured to: controlling whether an emergency rescue power supply is started or not according to the monitoring result of the self-monitoring circuit and controlling the emergency rescue power supply or a power grid to supply power to the elevator according to the monitoring result of the self-monitoring circuit;
and the two contacts in the normally open auxiliary contacts are also used for being respectively connected to a control end of an emergency rescue power supply and the circuit switching control relay.
2. The startup control circuit of claim 1,
whether the control emergency rescue power supply is opened or not according to the monitoring result of the self-monitoring circuit comprises the following steps:
if the power grid is monitored to be powered off, controlling an emergency rescue power supply to be started;
the control emergency rescue power or electric wire netting are supplied power to the elevator according to the monitoring result from monitoring circuit includes:
and if the power grid is monitored to be powered off, controlling the emergency rescue power supply to supply power to the elevator and cutting off the power supply of the power grid to the elevator.
3. The startup control circuit of claim 1,
whether the control emergency rescue power supply is opened or not according to the monitoring result of the self-monitoring circuit comprises the following steps:
if the power grid is monitored to be electrified, controlling the emergency rescue power supply to be turned off;
the control emergency rescue power or electric wire netting are supplied power to the elevator according to the monitoring result from monitoring circuit includes:
and if the power grid is monitored to be electrified, controlling the power grid to supply power to the elevator and cutting off the power supply of the emergency rescue power supply to the elevator.
4. The start-up control circuit of claim 1, wherein the first contactor has an interlocking relationship with the second contactor, and wherein the coil of the second contactor is powered off while the coil of the first contactor is powered on.
5. The start-up control circuit of claim 4, wherein the circuit-switching control relay comprises: the emergency rescue power supply comprises a first auxiliary switching contact and a second auxiliary switching contact, wherein the first auxiliary switching contact is used for controlling the emergency rescue power supply to be started when the circuit switching control relay is electrified so as to supply power to the elevator; the second pair of switching contacts is used for realizing the switching of power supply of the elevator from the elevator to an emergency rescue power supply by a power grid when the circuit switching control relay is electrified, and the coil of the first contactor and the coil of the second contactor are connected with the second pair of switching contacts.
6. The start-up control circuit of claim 1, wherein the circuit-switching control relay is further configured to: and the emergency rescue power supply is electrically connected, the connection and disconnection of the emergency rescue power supply are controlled by a control signal, and the emergency rescue power supply is connected and conducted with the circuit switching control relay under the control of the control signal when the power grid is powered off so as to supply power to the circuit switching control relay.
7. The start control circuit according to claim 6, wherein in an automatic rescue scenario, the main contact and the normally open auxiliary contact of the power main switch are turned on; if the self-monitoring circuit monitors that the power grid is powered off, the emergency rescue power supply also supplies power to the circuit switching control relay, so that the circuit switching control relay is powered on, and the circuit switching control relay in the powered state sends a starting signal to a control end of the emergency rescue power supply to start the emergency rescue power supply so as to supply power to the elevator; the circuit switching control relay under the power-on state enables the first contactor to be conducted and the second contactor to be cut off so as to control the emergency rescue power supply to supply power to the elevator and cut off the power supply of the power grid to the elevator.
8. The startup control circuit of claim 6, wherein the emergency rescue power supply comprises:
a direct current power supply; and
the direct current-alternating current conversion unit is electrically connected with the direct current power supply so as to convert direct current provided by the direct current power supply into alternating current; the control end of the direct current-alternating current conversion unit is used as the control end of the emergency rescue power supply and is respectively connected with one of the two contacts in the circuit switching control relay and the normally open auxiliary contact, and the other of the two contacts is connected with the circuit switching control relay, so that the circuit switching control relay controls whether the direct current-alternating current conversion unit is started or not according to the monitoring result of the self-monitoring circuit;
the direct current power supply is electrically connected with the circuit switching control relay, the connection and disconnection of the direct current power supply and the circuit switching control relay are controlled by a control signal, and when the power grid is powered off, the direct current power supply is connected and conducted with the circuit switching control relay under the control of the control signal so as to supply power to the circuit switching control relay.
9. A control method based on the start control circuit according to any one of claims 1 to 8, comprising:
in an automatic rescue scene, operating a main switch of a power supply to turn off a main contact and a normally open auxiliary contact;
two contacts of the normally open auxiliary contact are connected with a self-monitoring circuit to monitor whether the power grid is powered off or not; two contacts in the normally open auxiliary contacts are also respectively connected to a control end of an emergency rescue power supply and a circuit switching control relay;
the circuit switching control relay controls whether the emergency rescue power supply is started or not according to the monitoring result of the self-monitoring circuit and controls the emergency rescue power supply or a power grid to supply power to the elevator according to the monitoring result of the self-monitoring circuit.
10. An elevator, characterized by comprising: automatic rescue apparatus comprising a start control circuit according to any one of claims 1 to 8, comprising: a split type automatic rescue device which is relatively independent of the elevator control system, or an integrated type automatic rescue device which is integrated with the elevator control system.
CN202011264638.8A 2020-11-12 2020-11-12 Starting control circuit and method of automatic rescue device and elevator Active CN112383133B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070272492A1 (en) * 2003-10-07 2007-11-29 Tegtmeier Dirk H Electrical Elevator Rescue System
JP2008184278A (en) * 2007-01-30 2008-08-14 Mitsubishi Electric Corp Control device for elevator
CN201321315Y (en) * 2008-12-30 2009-10-07 浙江联合电梯有限公司 Integrated elevator control device with blackout rescue function
CN201890678U (en) * 2010-11-23 2011-07-06 西子奥的斯电梯有限公司 Lift rescue device
CN104909225A (en) * 2015-06-25 2015-09-16 巨立电梯股份有限公司 Machine room-free elevator UPS rescue control circuit
CN207698953U (en) * 2018-01-04 2018-08-07 泉州亿杰自动化设备有限公司 A kind of zero standby elevator emergency rescue start-up circuit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070272492A1 (en) * 2003-10-07 2007-11-29 Tegtmeier Dirk H Electrical Elevator Rescue System
JP2008184278A (en) * 2007-01-30 2008-08-14 Mitsubishi Electric Corp Control device for elevator
CN201321315Y (en) * 2008-12-30 2009-10-07 浙江联合电梯有限公司 Integrated elevator control device with blackout rescue function
CN201890678U (en) * 2010-11-23 2011-07-06 西子奥的斯电梯有限公司 Lift rescue device
CN104909225A (en) * 2015-06-25 2015-09-16 巨立电梯股份有限公司 Machine room-free elevator UPS rescue control circuit
CN207698953U (en) * 2018-01-04 2018-08-07 泉州亿杰自动化设备有限公司 A kind of zero standby elevator emergency rescue start-up circuit

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