TWI836969B - Improvement device for automatic switching switch - Google Patents

Abstract

The present invention provides an improvement device for automatic switching switches, which addresses the existing limitation that two circuit breakers of the automatic switching switch can only switch between each other. This invention is an improved device for automatically switching a switch, comprising a traditional electric motor-based automatic switch, a control power unit, and a locking unit. It incorporates electrical and mechanical interlocking to ensure the proper functioning of the control power, enforces the prioritized execution of circuit breaker closure, and power circuit fault tripping and reclosing. The device addresses the shortcomings of conventional automatic switch systems, enhancing their performance and safety. When one circuit has a fault, the circuit breaker cannot be forced to close and let the other circuit breaker to operate at open and close. When a fire occurs, the circuit breaker that cannot be forced to operate in the closed position to supply reauired power, which would cause the safety problem of electricity use.

Description

Improved device for automatic switching switch

The present invention is an improved device for an automatic switching switch, which improves the problem that the automatic switching switch in the prior art is limited to the function that the two circuit breakers can only switch with each other. When one of the circuits fails, the circuit breaker of the faulty circuit cannot be forced to close, and the other circuit breaker is activated to open and close. When a fire occurs, the circuit breaker that is activated cannot be forced to supply power in the closed position, thereby improving the safety of electricity use.

The interlocking method between circuit breakers in the automatic switching switch is familiar to world-renowned brands such as Schneider and Siemens. Circuit breakers are generally connected to each other with a similar steel cable (the mechanism on the back of the circuit breaker locks the actuating mechanism of the circuit breaker) to achieve an interlocking relationship. Therefore, there are special requirements on specifications, models, and sizes. If not, If they are of the same model and specification, the interlocking function cannot be performed and the entire set must be replaced, which cannot be effectively used. In many cases in actual power systems, there are many situations where the two circuit breakers must be locked against each other, that is, the two circuit breakers are interlocked (Interlock), that is, only one of the two circuit breakers is energized, and both cannot be energized at the same time, which will cause a short circuit accident.

Products in the existing technology generally use a hole to dig a hole in the bottom of the circuit breaker to insert a linked insulating device similar to a chime plate, and mechanically interlock the movable closing contact of the circuit breaker, or use sheet metal to lock the two circuit breakers to the relative tripping mechanism or input mechanism to achieve the function of interlocking the two circuit breakers. This method has many disadvantages that will cause inconvenience in use, limit functionality, and destroy the basic structure of the circuit breaker.

There is a product in the art. The two circuit breakers are driven by an electric motor to drive a transmission mechanism, and then the two circuit breakers are opened and closed. Therefore, one circuit breaker of the automatic transfer switch is closed, and the other circuit breaker is In the opening and closing position, in this cycle, when the power circuit of one circuit breaker is disabled but the circuit breaker is not blocked, the other circuit breaker is actuated to close. When the other circuit breaker is opened and disconnected, the originally disabled circuit breaker The device will re-close, which will cause a mistaken input action. The lack of the above functions is a problem that must be solved.

In addition to the traditional automatic transfer switch in the art, which cannot block one circuit breaker when a power circuit fault occurs and only operates the other circuit breaker, the traditional automatic transfer switch generally blocks the two circuit breakers when a fire occurs. The lack of a mechanism to force the energization to close is also a shortcoming, and traditional automatic transfer switches cannot solve the above problems.

In summary, the traditional automatic switching switch not only invasively destroys the circuit breaker structure, but also fails to lock the faulty circuit and enable the other circuit to close and open when one of the common power circuits fails. It will not switch to the faulty circuit again. This is one of the problems that must be solved. When a fire occurs in the system, it cannot force the circuit breaker to be in the closed position. The power supply of fire fighting equipment is also one of the problems that must be solved; therefore, the shortcomings of the automatic switching switch in the conventional technology must be improved. When a fire occurs or an emergency occurs, the circuit breaker can be forced to close as the first priority. Secondly, when a fault occurs, the circuit breaker and power of the faulty circuit can be locked, and the power can be supplied by another power circuit that is not in a faulty state. Of course, it is best not to damage the structure of the two circuit breakers. This is the problem that the present invention aims to solve.

The main purpose of the present invention is to provide an automatic switching function between two circuit breakers, a mechanical interlocking device that can achieve the function of electrical and mechanical interlocking, especially suitable for long-distance applications, to avoid misoperation or non-operation due to electrical faults. The main problem should be to solve the electrical and mechanical interlocking between the two circuit breakers without destroying the structure of the circuit breaker, and provide a switch interlocking device with simple structure and convenient installation, especially to force the circuit breaker to close when a fire occurs. The solution that can be used in all aspects of the above-mentioned various functional requirements uses a locking unit to perform the interlocking function, and the reliable electrical and mechanical aspects are combined to prevent misoperation, which can improve the safety performance of electrical equipment.

In order to achieve the above purpose, the improved device of the automatic switch of the present invention is provided with a plurality of power inputs as a device for controlling the power supply, so as to prevent the failure of the power circuit from causing the circuit breaker to trip or the under-equal condition to cause the control power supply to become disabled, so as to ensure that the present invention The control power supply of the improved device of the automatic transfer switch is functioning normally.

In order to achieve the above purpose, an external locking unit is provided. The external locking unit can lock the faulty power circuit and enable the electric operating motor to operate the normal power circuit so that the circuit can perform the opening and closing functions through the circuit breaker. , and is set to receive information when a fire occurs, and to force the circuit breaker to be closed with priority, and to prioritize the power circuit fault tripping and re-closing sequence function.

To achieve the above-mentioned purpose, an improved device for automatic switching switch includes: a traditional electric motor type automatic switching switch, a control power supply unit, and a locking unit; the traditional electric motor type automatic switching switch includes: a main switch, a backup switch, an electric operating motor, an electric operating motor transmission mechanism, a closing command contact, and an opening command contact; the main switch has a main switch handle, a main switch normally open auxiliary contact, a main switch normally closed auxiliary contact, and a main switch trip release button. The main switch handle is linked to the electric operating motor transmission mechanism. The main switch normally open auxiliary contact is the auxiliary contact of the main switch in the closed position. The main switch normally closed auxiliary contact is the auxiliary contact of the main switch in the start position. The main switch trip button switch is linked to the internal trip mechanism of the main switch. When the main switch trip button switch is actuated, the main switch cannot be started or closed. The spare switch has a spare switch handle, a spare switch normally open auxiliary contact, and a spare switch. The invention relates to a device for controlling a motor drive mechanism of an electric motor, wherein the normally open auxiliary contact of the standby switch is an auxiliary contact of the standby switch in the closed position, and the normally closed auxiliary contact of the standby switch is an auxiliary contact of the standby switch in the open position. The standby switch open button switch links the internal open mechanism of the standby switch. When the standby switch open button switch is actuated, the standby switch cannot be opened or closed, and the electric motor is operated according to the close command contact. The command actuation drives the electric operating motor transmission mechanism to move the main switch handle to the closed position, and the main switch normally open auxiliary contact actuates the electric operating motor to stop actuating, or the backup switch handle actuates the backup switch to the closed position, and the backup switch normally open auxiliary contact actuates the electric operating motor to stop actuating, and the electric operating motor actuates the electric operating motor transmission mechanism according to the start and stop command contact to move the main switch handle to the start and stop position, and the main switch The normally closed auxiliary contact of the electric motor is activated to stop the action, or the standby switch handle activates the standby switch to the start position, the normally closed auxiliary contact of the standby switch activates the electric motor to stop the action, and the traditional electric motor type automatic switching switch activates the electric motor according to the information of the closing command contact and the starting command contact. The electric motor transmission mechanism links the main switch handle or the normally open auxiliary contact of the main switch to activate the main switch or the standby switch to start or close; the control The control power supply unit is provided with an AC power supply or an uninterruptible power supply system or a DC power supply as an input power supply, and is converted into an appropriate DC working power supply through AC/DC conversion and voltage reduction, and is used as the working power supply of the locking unit; the locking unit has a main switch locking unit and a backup switch locking unit, and the main switch locking unit is composed of a main switch locking coil or a main switch external locking unit. When the main switch locking unit is actuated, the main switch trips the button switch, and the main switch cannot be opened or closed, and the main switch is closed. When the lock unit is actuated, a main switch lock action normally closed auxiliary contact is not conductive, so that when the electric operating motor drives the electric operating motor transmission mechanism, the main switch is not in the set position. The backup switch can be actuated according to the closing command contact or the starting and breaking command contact. When the backup switch lock unit is actuated, the backup switch trips the button switch, and the backup switch cannot be started or closed. When the backup switch lock unit is actuated, a backup switch lock action normally closed auxiliary contact is not conductive, so that the electric operating motor drives the When the motor transmission mechanism is electrically operated, the backup switch is not in the set position, and the main switch can be actuated according to the closing command contact or the starting command contact; the improved device of the automatic switching switch is provided with the control power supply unit and the locking unit, and the control power supply unit can ensure an appropriate and stable DC power supply for the improved device of the automatic switching switch and the locking unit. When the locking unit is actuated, one of the main switch or the backup switch can be locked, and the other switch can be normally opened or closed.

In order to achieve the above purpose, an improved device of an automatic switch includes: a traditional electric motor automatic switch, a control power supply unit, and a fire alarm actuating unit; the traditional electric motor automatic switch includes: a main switch, a backup switch switch, an electric operating motor, an electric operating motor transmission mechanism, a closing command contact, an opening and closing command contact, the main switch It has a main switch handle, a main switch normally open auxiliary contact, a main switch normally closed auxiliary contact, and a main switch trip button switch. The main switch handle is linked with the electric operating motor transmission mechanism, and the main switch is normally open. The auxiliary contact is the auxiliary contact of the main switch in the closed position. The normally closed auxiliary contact of the main switch is the auxiliary contact of the main switch in the on-off position. The trip button switch of the main switch triggers the internal trip of the main switch. Mechanism, when the main switch trip button switch is activated, the main switch cannot be opened or closed. The backup switch has a backup switch handle, a backup switch normally open auxiliary contact, a backup switch normally closed auxiliary contact, and a backup switch. The switch trip button switch, the backup switch handle is linked with the electric operating motor transmission mechanism, the normally open auxiliary contact of the backup switch is the auxiliary contact of the backup switch in the closed position, and the normally closed auxiliary contact of the backup switch is the backup The auxiliary contact of the switch is in the on-off position. The backup switch trip button switch is linked to the internal trip mechanism of the backup switch. When the backup switch trip button switch is activated, the backup switch cannot be opened or closed, and the electric operating motor is operated according to the The closing command contact command acts to drive the electric operating motor transmission mechanism to actuate the main switch handle to the closed position, the normally open auxiliary contact of the main switch actuates the electric operating motor to stop operating, or the backup switch handle Activate the backup switch to the closed position, the normally open auxiliary contact of the backup switch activates the electric operating motor to stop operating, and the electric operating motor operates according to the instruction of the start-off command contact to drive the electric operating motor transmission mechanism to move the main switch handle Activate the main switch to the on-off position, and the normally closed auxiliary contact of the main switch actuates the electric operating motor to stop operating, or operate the backup switch handle to the on-off position, and the normally closed auxiliary contact of the backup switch actuates the The electric operating motor stops operating, and the traditional electric motor-type automatic switch activates the electric operating motor according to the closing command contact and the opening and closing command contact information, and the electric operating motor transmission mechanism links the main switch handle or the main switch normal Open the auxiliary contact to activate the main switch or the backup switch to open or close; the control power supply unit An AC power supply or an uninterruptible power supply system or a DC power supply is used as the input power supply, and is converted and stepped down into an appropriate DC working power supply as the working power supply of the improved device of the automatic switch; the fire alarm actuating unit is provided with a fire alarm An actuating relay and a fire alarm actuating normally closed auxiliary contact. The fire alarm actuating relay actuates according to a fire alarm actuating message. When the fire alarm actuating message actuates, the fire alarm actuating relay actuates and is electrically connected to the electric operating motor to drive the electric motor. The operating motor transmission mechanism brings the main switch or the backup switch to the closed position, and is electrically connected to the closing command contact to activate the electric operating motor and drive the electric operating motor transmission mechanism to bring the main switch or the backup switch to the closed position. , the fire alarm actuating normally closed auxiliary contact is the normally closed auxiliary contact of the fire alarm actuating relay, the fire alarm actuating normally closed auxiliary contact is electrically connected to the opening and closing command contact of the electric operating motor, and the fire alarm actuating unit operates When the opening and closing command contact is forced to be inactive, the main switch or the backup switch is forced to the closed position; the improved device of the automatic switch is provided with the control power supply unit and the fire alarm actuating unit, and the control power supply unit can ensure the automatic switching The improved device of the switch is provided with an appropriate and stable DC power supply. When the fire alarm activation information of the fire alarm system is activated, the fire alarm activation unit is activated to force the main switch or the backup switch to be in the closed position.

1: Improved device for automatic switching

100: Traditional electric motor automatic switching switch

110: Main switch

111: Main switch handle

112: Main switch normally open auxiliary contact

113: Main switch normally closed auxiliary contact

114: Main switch trip button switch

119: Fire alarm activation information

120: Backup switch

121: Spare switch handle

122: Standby switch normally open auxiliary contact

123: Standby switch normally closed auxiliary contact

124: Backup switch trip button switch

130: Electric operated motor

140: Electric-operated motor transmission mechanism

151: Close command contact

152: Enable command contact

200: Control power supply unit

201:AC power supply

202: Uninterruptible power system

203:DC power supply

300: Locking unit

311: Main switch locking unit

312: Main switch locking coil

313: Main switch external locking unit

314: Main switch lock action normally closed auxiliary contact

321: Spare switch locking unit

324: Standby switch lock action normally closed auxiliary contact

400: Fire alarm actuation unit

401: Fire alarm actuation relay

402: Fire alarm actuation normally closed auxiliary contact

[Figure 1] is a schematic diagram of the configuration of the first embodiment of an improved device for automatic switching switch of the present invention

[Figure 2] is a schematic configuration diagram of the second embodiment of an improved device for automatic switching switches of the present invention.

The first embodiment of the improved device 1 of the automatic switching switch of the present invention is shown in FIG1 . The improved device 1 of the automatic switching switch comprises: a conventional electric motor type automatic switching switch 100, a control power supply unit 200, and a locking unit 300; the conventional electric motor type automatic switching switch 100 comprises: a main switch 110, a backup switch 120, an electric operating motor 130, an electric operating motor transmission mechanism 140, a closing command contact 151, and an opening command contact 152. The main switch 110 has a main switch handle 111, a main switch normally open auxiliary contact 112, and a main The main switch 110 has a normally closed auxiliary contact 113 and a main switch trip button switch 114. The main switch handle 111 is linked to the electric operating motor transmission mechanism 140. The main switch normally open auxiliary contact 112 is an auxiliary contact of the main switch 110 in the closed position. The main switch normally closed auxiliary contact 113 is an auxiliary contact of the main switch 110 in the start position. The main switch trip button switch 114 links the internal trip mechanism of the main switch 110. When the main switch trip button switch 114 is actuated, the main switch 110 cannot be started or closed. The spare switch 120 has a spare switch handle 121 and a A backup switch normally open auxiliary contact 122, a backup switch normally closed auxiliary contact 123, and a backup switch trip button switch 124. The backup switch handle 121 is linked to the electric operating motor transmission mechanism 140. The backup switch normally open auxiliary contact 122 is an auxiliary contact of the backup switch 120 in the closed position. The backup switch normally closed auxiliary contact 123 is an auxiliary contact of the backup switch 120 in the start position. The backup switch trip button switch 124 links the internal trip mechanism of the backup switch 120. When the backup switch trip button switch 124 is actuated, the backup switch 120 cannot be started or closed, and the electric operating motor The electric motor transmission mechanism 140 is driven by the closing command contact 151 to drive the main switch handle 111 to the closing position, and the main switch normally open auxiliary contact 112 drives the electric motor 130 to stop moving, or the backup switch handle 121 drives the backup switch 120 to the closing position, and the backup switch normally open auxiliary contact 122 drives the electric motor 130 to stop moving, and the electric motor 130 is driven by the starting command contact 152 to drive the electric motor transmission mechanism 140 to drive the main switch handle 111 to the main switch 1 10 to the start position, the main switch normally closed auxiliary contact 113 actuates the electric operating motor 130 to stop actuation, or the backup switch handle 121 actuates the backup switch 120 to the start position, the backup switch normally closed auxiliary contact 123 actuates the electric operating motor 130 to stop actuation, the traditional electric motor type automatic switching switch 100 actuates the electric operating motor 130 according to the information of the closing command contact 151 and the starting command contact 152, and the electric operating motor transmission mechanism 140 is linked to the main switch handle 111 or the main switch normally open auxiliary contact 112 to make the main switch 110 or the backup switch 120 start. 0 is actuated to start or close; the control power unit 200 is input with an AC power source 201 or an uninterruptible power system 202 or a DC power source 203 as an input power source, which is converted from AC to DC and stepped down to an appropriate DC working power source as the working power source of the locking unit 300; the locking unit 300 has a main switch locking unit 311 and a backup switch locking unit 321, the main switch locking unit 311 is composed of a main switch locking coil 312 or a main switch external locking unit 313, and the main switch locking unit 311 is locked when the main switch trip button switch 114 is actuated, and the main switch 110 cannot be started or closed. When the main switch lock unit 311 is actuated, a main switch lock actuation normally closed auxiliary contact 314 is not conductive, so that when the electric operating motor 130 drives the electric operating motor transmission mechanism 140, the main switch 110 is not in the set position, and the backup switch 120 can be closed according to the closing command contact 151 or When the start/stop command contact 152 is actuated, the standby switch lock unit 321 is actuated to lock the standby switch trip button switch 124, and the standby switch 120 cannot be started or closed. When the standby switch lock unit 321 is actuated, a standby switch lock actuation normally closed auxiliary contact 324 is not conductive, so that the electric operating motor When the electric operating motor transmission mechanism 140 is driven by the voltage 130, the backup switch 120 is not in the set position, and the main switch 110 can be actuated according to the closing command contact 151 or the starting command contact 152; the improved device 1 of the automatic switching switch is provided with the control power unit 200 and the locking unit 300, and the control power unit 200 can ensure that the improved device 1 of the automatic switching switch and the locking unit 300 have an appropriate and stable DC power supply. When the locking unit 300 is actuated, one of the main switch 110 or the backup switch 120 can be locked, and the other switch can be normally opened or closed.

The second embodiment of an improved device 1 for an automatic switch according to the present invention is shown in Figure 2. An improved device 1 for an automatic switch includes: a traditional electric motor automatic switch 100, a control power supply unit 200, and a fire alarm. Actuating unit 400; the traditional electric motor automatic switch 100 includes: a main switch 110, a backup switch 120, an electric operating motor 130, an electric operating motor transmission mechanism 140, a closing command contact 151, and an opening and closing command. Contact 152, the main switch 110 has a main switch handle 111, a main switch normally open auxiliary contact 112, a main switch normally closed auxiliary contact 113, a main switch trip button switch 114, the main switch handle 111 and The electrically operated motor transmission mechanism 140 is connected, the normally open auxiliary contact 112 of the main switch is the auxiliary contact of the main switch 110 in the closed position, and the normally closed auxiliary contact 113 of the main switch is the auxiliary contact of the main switch 110 in the on-off position. Auxiliary contact, the main switch trip button switch 114 links the internal trip mechanism of the main switch 110. When the main switch trip button switch 114 is activated, the main switch 110 cannot be opened or closed, and the backup switch 120 has a backup The switch handle 121, a backup switch normally open auxiliary contact 122, a backup switch normally closed auxiliary contact 123, a backup switch trip button switch 124, the backup switch handle 121 is linked with the electric operating motor transmission mechanism 140, the backup switch The normally open auxiliary contact 122 of the switch is the auxiliary contact of the backup switch 120 in the closed position. The normally closed auxiliary contact 123 of the backup switch is the auxiliary contact of the backup switch 120 in the on-off position. The backup switch trips the push button switch. 124 links the internal tripping mechanism of the backup switch 120. When the backup switch trip button switch 124 is activated, the backup switch 120 cannot be opened or closed, and the electric operation motor 130 operates according to the instruction of the closing command contact 151 to drive the electric operation. The motor transmission mechanism 140 actuates the main switch handle 111 of the main switch 110 to the closed position, actuates the normally open auxiliary contact 112 of the main switch to stop the electric operating motor 130, or actuates the backup switch handle 121 of the backup switch 120 to the closed position, the normally open auxiliary contact 122 of the backup switch operates and the electric operating motor 130 stops operating. The electric operating motor 130 operates according to the instruction of the opening and closing command contact 152 to drive the electric operating motor transmission mechanism 140 to actuate the main switch handle 111 of the main switch 110 to the opening and closing position, and the normally closed auxiliary contact 113 of the main switch actuates the main switch 110 to the opening and closing position. The electric operation motor 130 stops operating, or the backup switch handle 121 actuates the backup switch 120 to the on-off position, and the normally closed auxiliary contact 123 of the backup switch actuates the electric operation motor 130 to stop the operation. The traditional electric motor automatic switch 100 Activates the electric operating motor 130 and the electric operating motor transmission mechanism 140 according to the information of the closing command contact 151 and the opening command contact 152, linking the main switch handle 111 or the main switch normally open auxiliary contact 112 to make the main switch The switch 110 or the backup switch 120 operates until it is on or off or closed; the control power supply unit 200 uses an AC power supply 201 or an uninterruptible power supply system 202 or a DC power supply 203 as the input power source, and converts the AC to DC and steps down the voltage into an appropriate DC operation. Power supply is used as the working power supply of the improved device 1 of the automatic switch; the fire alarm activation unit 400 is provided with a fire alarm activation relay 401 and a fire alarm activation normally closed auxiliary contact 402. The fire alarm activation relay 401 is based on a fire alarm activation information. 119 is activated. When the fire alarm activation information 119 is activated, the fire alarm activation relay 401 is activated and is electrically connected to the electric operating motor 130 to drive the electric operating motor transmission mechanism 140 to make the main switch 110 or the backup switch 120 to the closed position. And is electrically connected to the closing command contact 151 to activate the electric operating motor 130 to drive the electric operating motor transmission mechanism 140 to make the main switch 110 or the backup switch 120 to the closed position. The fire alarm normally closed auxiliary contact 402 is The normally closed auxiliary contact of the fire alarm actuating relay 401, the fire alarm actuating normally closed auxiliary contact 402 is electrically connected to the opening and closing command contact 152 of the electric operating motor 130, and the opening and closing command is activated when the fire alarm actuating unit 400 is activated. The contact 152 is forced to be inactive, forcing the main switch 110 or the backup switch 120 to the closed position; the improved device 1 of the automatic switch is provided with the control power supply unit 200 and the fire alarm activation unit 400. The control power supply unit 200 can ensure that the The improved device 1 of the automatic transfer switch has an appropriate and stable DC power supply. When the fire alarm system fires When the alarm activation information 119 is activated, the fire alarm activation unit 400 is activated to force the main switch 110 or the backup switch 120 to be in the closed position.

In summary, the improved device of the automatic switching switch of the present invention further improves the stability and safety of the circuit breaker panel in the power supply system, and has great industrial application value. Moreover, the relevant products on the market and the approved patent announcements have not been found to have the same technical features as the present invention, and it also meets the statutory patent application requirements of novelty and progress. Based on the patent application filed in accordance with the law, I sincerely request the review committee to grant the patent for this case as soon as possible to ensure the rights and interests of the applicant. However, what is disclosed in this case is only a better embodiment of the present invention, and it cannot be used to limit the scope of the rights of the present invention. All equivalent changes or modifications made according to the spirit of the present invention are still covered by the scope of the patent application of the present invention.

1: Improved device of automatic switching switch

100: Traditional electric motor type automatic switch

110: Main switch

111:Main switch handle

112: Main switch normally open auxiliary contact

113: Main switch normally closed auxiliary contact

114: Main switch trip button switch

120: Backup switch

121: Spare switch handle

122: Standby switch normally open auxiliary contact

123: Standby switch normally closed auxiliary contact

124: Backup switch trip button switch

130: Electrically operated motor

140: Electric-operated motor transmission mechanism

151: Close command contact

152: Enable command contact

200: Control power supply unit

201: AC power supply

202: Uninterruptible power supply system

203:DC power supply

300: Locking unit

311: Main switch locking unit

312: Main switch locking coil

313: Main switch external locking unit

314: Main switch locking action normally closed auxiliary contact

321: Spare switch locking unit

324: Standby switch locking actuation normally closed auxiliary contact

Claims (2)

An improved device for an automatic switching switch includes: a traditional electric motor type automatic switching switch, a control power supply unit, and a locking unit; the traditional electric motor type automatic switching switch includes: a main switch, a backup switch, an electric operating motor, an electric operating motor transmission mechanism, a closing command contact, and an opening command contact; the main switch has a main switch handle, a main switch normally open auxiliary contact, a main switch normally closed auxiliary contact, and a main switch trip button switch; the main switch The switch handle is linked to the electric operating motor transmission mechanism, the main switch normally open auxiliary contact is the auxiliary contact of the main switch in the closed position, the main switch normally closed auxiliary contact is the auxiliary contact of the main switch in the start position, the main switch trip button switch is linked to the main switch internal trip mechanism, when the main switch trip button switch is actuated, the main switch cannot be started or closed, the spare switch has a spare switch handle, a spare switch normally open auxiliary contact, a spare switch normally closed auxiliary contact point, a standby switch trip button switch, the standby switch handle is linked to the electric operating motor transmission mechanism, the standby switch normally open auxiliary contact is the auxiliary contact of the standby switch in the closed position, the standby switch normally closed auxiliary contact is the auxiliary contact of the standby switch in the start position, the standby switch trip button switch links the standby switch internal trip mechanism, when the standby switch trip button switch is actuated, the standby switch cannot be started or closed, and the electric operating motor is actuated according to the closed command contact command The electric motor transmission mechanism is driven by the main switch handle to drive the main switch to the closed position, and the main switch normally open auxiliary contact drives the electric motor to stop moving, or the backup switch handle drives the backup switch to the closed position, and the backup switch normally open auxiliary contact drives the electric motor to stop moving. The electric motor drives the electric motor transmission mechanism according to the start and stop command contact to drive the main switch handle to drive the main switch to the start position, and the main switch normally closed auxiliary contact drives the electric motor to stop moving. Auxiliary contact Actuate the electric motor to stop the action, or move the standby switch handle to the start position, the standby switch normally closed auxiliary contact actuates the electric motor to stop the action, the traditional electric motor type automatic switching switch actuates the electric motor according to the closing command contact, the start command contact information, the electric motor transmission mechanism, and links the main switch handle or the main switch normally open auxiliary contact to actuate the main switch or the standby switch to start or close; the control power supply The unit is powered by an AC power source or an uninterruptible power system or a DC power source, which is converted from AC to DC and stepped down to an appropriate DC working power source as the working power source of the locking unit; the locking unit has a main switch locking unit and a backup switch locking unit. The main switch locking unit is composed of a main switch locking coil or a main switch external locking unit. When the main switch locking unit is actuated, the main switch trips the button switch, and the main switch cannot be opened or closed. The main switch locking unit When the main switch lock unit is actuated, the normally closed auxiliary contact of the main switch lock action is not conductive, so that the main switch is not in the set position when the electric operating motor drives the electric operating motor transmission mechanism. The backup switch can be actuated according to the closing command contact or the starting and breaking command contact. When the backup switch lock unit is actuated, the backup switch trip button switch is locked, and the backup switch cannot be started or closed. When the backup switch lock unit is actuated, the normally closed auxiliary contact of the backup switch lock action is not conductive, so that the electric operating motor drives the electric When the motor transmission mechanism is automatically operated, the backup switch is not in the set position, and the main switch can be actuated according to the closing command contact or the starting command contact; the improved device of the automatic switching switch is provided with the control power supply unit and the locking unit, and the control power supply unit can ensure that the improved device of the automatic switching switch and the locking unit have an appropriate and stable DC power supply. When the locking unit is actuated, one of the main switch or the backup switch can be locked, and the other switch can be normally opened or closed. An improved device for an automatic switch, including: a traditional electric motor type automatic switch Switch, a control power supply unit, and a fire alarm actuating unit; the traditional electric motor-type automatic switch includes: a main switch, a backup switch, an electric operating motor, an electric operating motor transmission mechanism, a closing command contact, and a On/off command contact, the main switch has a main switch handle, a main switch normally open auxiliary contact, a main switch normally closed auxiliary contact, a main switch trip button switch, the main switch handle and the electric operating motor The transmission mechanism is linked. The normally open auxiliary contact of the main switch is the auxiliary contact of the main switch in the closed position. The normally closed auxiliary contact of the main switch is the auxiliary contact of the main switch in the on-off position. The main switch trips. The push button switch is linked to the internal tripping mechanism of the main switch. When the main switch trip button switch is activated, the main switch cannot be opened or closed. The backup switch has a backup switch handle, a backup switch normally open auxiliary contact, and a backup switch. The switch has a normally closed auxiliary contact and a backup switch trip button switch. The backup switch handle is linked to the electric operating motor transmission mechanism. The normally open auxiliary contact of the backup switch is the auxiliary contact of the backup switch in the closed position. The backup switch has a normally closed auxiliary contact. The normally closed auxiliary contact of the switch is the auxiliary contact of the backup switch in the on-off position. The trip button switch of the backup switch links the internal tripping mechanism of the backup switch. When the trip button switch of the backup switch is activated, the backup switch cannot be started. Open or close, the electric operating motor operates according to the instruction of the closing command contact to drive the electric operating motor transmission mechanism to operate the main switch handle to the closed position, and the normally open auxiliary contact of the main switch operates the electric operating motor to stop or move the handle of the backup switch to the closed position. The normally open auxiliary contact of the backup switch activates the electric operating motor to stop operating. The electric operating motor operates to drive the electric operating motor according to the command of the start-off command contact. The operating motor transmission mechanism actuates the main switch handle to the on-off position, the normally closed auxiliary contact of the main switch actuates the electric operating motor to stop operating, or the backup switch handle actuates the backup switch to the on-off position, the When the normally closed auxiliary contact of the backup switch actuates, the electric operating motor stops actuating, and the traditional electric The electric motor type automatic transfer switch activates the electric operating motor and the electric operating motor transmission mechanism according to the closing command contact and the opening and closing command contact information, and links the main switch handle or the main switch normally open auxiliary contact to make the main switch Or the backup switch operates to open or close; the control power supply unit uses an AC power supply or an uninterruptible power supply system or a DC power supply as the input power supply, and is converted and stepped down into an appropriate DC working power supply as the automatic switching The working power supply of the improved device of the switch; the fire alarm actuating unit is provided with a fire alarm actuating relay and a fire alarm actuating normally closed auxiliary contact. The fire alarm actuating relay actuates according to a fire alarm actuating message. When the fire alarm actuating message actuates, the fire alarm actuating The electric relay is activated, is electrically connected to the electric operating motor to drive the electric operating motor transmission mechanism to bring the main switch or the backup switch to the closed position, and is electrically connected to the closed command contact to enable the electric operating motor to operate and drive the electric relay. Operate the motor transmission mechanism to bring the main switch or the backup switch to the closed position. The fire alarm actuating normally closed auxiliary contact is the normally closed auxiliary contact of the fire alarm actuating relay. The fire alarm actuating normally closed auxiliary contact is electrically connected to the fire alarm actuating relay. The start-off command contact of the electric operating motor is forced not to operate when the fire alarm actuating unit is activated, forcing the main switch or the backup switch to the closed position; wherein the improved device of the automatic transfer switch is provided with the control power supply unit , the fire alarm actuating unit, the control power supply unit can ensure that the improved device of the automatic transfer switch has an appropriate and stable DC power supply. When the fire alarm actuating information of the fire alarm system is actuated, the fire alarm actuating unit actuates, forcing the main switch or the The backup switch is in the closed position.

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