CN216698143U

CN216698143U - Bypass type dual-power automatic transfer switch interlocking device

Info

Publication number: CN216698143U
Application number: CN202220204877.2U
Authority: CN
Inventors: 季春华; 沈惠新; 顾怡文
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-06-07
Anticipated expiration: 2032-01-25

Abstract

A bypass type dual-power automatic transfer switch interlocking device comprises a first transfer switch closing coil A-DF and a first transfer switch common power closing ready signal switch A1_{Ready for}A switch A2 of ready signal for switching on the standby power supply of the first transfer switch_{Ready for}The second transfer switch is a common power position signal switch R1_{Is divided into}And a second transfer switch standby power source position signal switch R2_{Is divided into}The first transfer switch is a common power supply closing ready signal switch A1_{Ready for}Normal open contact and second change over switch standby power supply position signal switch R2_{Is divided into}The normally closed contacts are connected in series to form a first branch circuit, and a first transfer switch standby power supply switching-on ready signalNumber switch A2_{Ready for}Normally closed contact and second transfer switch common power position signal switch R1_{Is divided into}The normally closed contacts are connected in series to form a second branch circuit, and the first branch circuit and the second branch circuit are connected in parallel and then connected to a switching-on coil A-DF loop of the first transfer switch. The parallel connection of the power supplies on different sides is not allowed under any condition, and the requirement of switch electric interlocking is met.

Description

Bypass type dual-power automatic transfer switch interlocking device

Technical Field

The utility model belongs to the technical field of low-voltage appliances, and particularly relates to a bypass type dual-power automatic transfer switch interlocking device.

Background

The automatic transfer switching device is widely applied to automatic switching between two power supplies so as to ensure the continuity of load power supply. In important power supply occasions such as telecommunication, mobile and data centers, in order to ensure the continuity of power supply, even if the automatic change-over switch is in fault, reliable power supply is ensured, therefore, a bypass type automatic change-over switch is needed, the automatic change-over switch is switched to bypass power supply when the automatic change-over switch is in fault, and the automatic change-over switch can be moved out for maintenance, so that the aim of maintenance without power outage is fulfilled. The standard GB14048.11 does not relate to the need for a bypass type automatic transfer switch, and the national electrical industry association standard T/CEEIA 302-2018 states that the ATSE and MTSE or RTSE are preferably fixed to the same mounting frame, and that there should be a mechanical and electrical interlock between the ATSE and MTSE or RTSE to satisfy the requirement that the ATSE and MTSE or RTSE allow the two power supplies to be connected in parallel on the same side, and in any case, the power supplies on different sides are not allowed to be connected in parallel.

In view of the above-mentioned prior art, there is a need for a reasonable improvement of the structure of the interlock device of the dual power automatic transfer switch of the bypass type. The applicant has therefore made an advantageous design, in the context of which the solution to be described below is made.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bypass type dual-power automatic transfer switch interlocking device, which realizes the requirement that different-side power supplies are not allowed to be connected in parallel under any condition through electrical interlocking, meets the requirement of electrical interlocking of a switch, and ensures the correct and reliable action of the switch.

The task of the utility model is completed in such a way that a bypass type double-power automatic transfer switch interlocking device is characterized in that: comprises a first transfer switch closing coil A-DF, a first transfer switch common power supply closing ready signal switch A1_{Ready for}A switch A2 of ready signal for switching on the standby power supply of the first transfer switch_{Ready for}The second transfer switch is a common power position signal switch R1_{Is divided into}And a second transfer switch standby power source position signal switch R2_{Is divided into}The first transfer switch is a common power supply closing ready signal switch A1_{Ready for}The normally open contact and the standby power supply position signal switch R2 of the second change-over switch_{Is divided into}The normally closed contacts of the first switching switch are connected in series to form a first branch circuit, and a standby power supply switching-on ready signal switch A2 of the first switching switch_{Ready for}Normally closed contact of the second transfer switch and a common power position signal switch R1_{Is divided into}The normally closed contacts are connected in series to form a second branch circuit, and the first branch circuit and the second branch circuit are connected in parallel and then connected to a switching-on coil A-DF loop of the first transfer switch.

In a specific embodiment of the present invention, the interlock device further includes a second transfer switch closing coil R-DF, and a second transfer switch common power closing ready signal switch R1_{Ready for}A second transfer switch standby power supply closing ready signal switch R2_{Ready for}A common power supply position signal switch A1 for the first transfer switch_{Is divided into}And a first changeover switch standby power source position signal switch A2_{Is divided into}Wherein, the second transfer switch is a common power supply closing ready signal switch R1_{Ready for}The normally open contact and the first transfer switch standby power source position signal switch A_{Is divided into}The normally closed contacts are connected in series to form a third branch, and a standby power supply closing ready signal switch R of the second transfer switch_{Ready for}The normally closed contact and the first transfer switch normally use the power supply position signal switch A_{Is divided into}The normally closed contacts are connected in series to form a fourth branch, and the third branch and the fourth branch are connected in parallel and then connected to a closing coil R-DF loop of the second change-over switch.

In another specific embodiment of the utility model, the bypass type dual power automatic transfer switch comprises a first transfer switch and a second transfer switch which are identical in structure, and each transfer switch comprises an operating mechanism, a contact system and a signal acquisition and transmission device.

In another specific embodiment of the present invention, the operating mechanism includes a mechanism side plate, a main shaft rotatably disposed in the middle of the mechanism side plate, a common spring mechanism corresponding to a common power supply and a backup spring mechanism corresponding to a backup power supply separately disposed on both sides of the main shaft, and a closing electromagnet fixed in the middle of the mechanism side plate and located above the main shaft, where the common spring mechanism and the backup spring mechanism have the same structure, and both include an opening and closing lever rotatably disposed on the mechanism side plate, a hasp rotatably disposed on the mechanism side plate, and a swing link driven by the opening and closing lever to follow.

In another specific embodiment of the present invention, the signal acquisition and transmission device includes a driving device, a common power position signal switch, a standby power position signal switch, and a switch-on ready signal switch, a central portion of the driving device is sleeved on the main shaft, two ends of the driving device are respectively provided with a first driving shaft and a second driving shaft, when the main shaft rotates to a common power switch-on position, the first driving shaft triggers the common power position signal switch, so that a normally-closed contact of the common power position signal switch is opened; when the main shaft rotates to the double-division position of the middle position, the first driving shaft does not trigger the common power supply position signal switch and the second driving shaft does not trigger the standby power supply position signal switch, so that the normally closed contact of the common power supply position signal switch is kept closed and the normally closed contact of the standby power supply position signal switch is kept closed; when the main shaft rotates to the standby power supply switching-on position, the second driving shaft triggers the standby power supply position signal switch, so that the normally closed contact of the standby power supply position signal switch is opened.

In another specific embodiment of the present invention, the switch-on ready signal switch is disposed corresponding to the standby spring mechanism, and is triggered by a switch-on/off lever or a swing link of the standby spring mechanism, and the switch-on ready signal switch has a normally closed contact and a normally open contact.

In a further specific embodiment of the present invention, when the standby power supply of the transfer switch is ready to be switched on, the switching lever of the standby spring mechanism is located at a position far away from the swing rod of the standby spring mechanism, the switching lever of the standby spring mechanism and the swing rod of the standby spring mechanism do not trigger a switching-on ready signal switch, the normally closed contact of the signal switch is kept closed, and the normally open contact of the signal switch is kept open; when the switching-on of the common power supply of the transfer switch is ready, the switching-on/off lever in the common spring mechanism is positioned at a position far away from the swing rod of the common spring mechanism, the switching-on/off lever of the standby spring mechanism drives the swing rod of the standby spring mechanism to act, and the switching-on/off lever of the standby spring mechanism or the swing rod of the standby spring mechanism triggers the switching-on ready switch to open the normally closed contact of the signal switch and close the normally open contact.

In a more specific embodiment of the present invention, the switch-on ready signal switch is disposed corresponding to the common spring mechanism, and is triggered by a switch-on/off lever or a swing link of the common spring mechanism, and the switch-on ready signal switch has a normally closed contact for outputting a switch-on ready signal of the standby power supply and a normally open contact for outputting a switch-on ready signal of the common power supply.

In yet another specific embodiment of the present invention, the switch-on ready signal switch is two separate switches, which are a common power switch-on ready signal switch and a standby power switch-on ready signal switch, each of which has a contact, the common power switch-on ready signal switch is disposed corresponding to the common spring mechanism, the standby power switch-on ready signal switch is disposed corresponding to the standby spring mechanism, the contact of the common power switch-on ready signal switch outputs the common power switch-on ready signal, and the contact of the standby power switch-on ready signal switch outputs the standby power switch-on ready signal.

Due to the adoption of the structure, the utility model has the beneficial effects that: through the electric interlocking, the requirement that the power supplies on different sides of the bypass type automatic change-over switch are not allowed to be connected in parallel under any condition is met, the requirement of the switch electric interlocking is met, the switch action is ensured to be correct and reliable, the bypass power supply is switched under the condition that the automatic change-over switch fails, the automatic change-over switch can be moved out for maintenance, and the purpose of maintenance without power outage is achieved.

Drawings

Fig. 1 is an exploded view of one of the bypass type dual power automatic transfer switches of the present invention.

Fig. 2 is a schematic diagram of an operating mechanism and a signal driving device according to the present invention.

Fig. 3 is an exploded view of the driving device of the present invention.

Fig. 4 is an assembly view of the second right plate and the signal switch according to the present invention.

Fig. 5 is a schematic view of the second right side plate according to the present invention.

Fig. 6 is a schematic diagram of a closing operation of a common power supply of the bypass type dual power automatic transfer switch of the present invention.

Fig. 7 is a schematic diagram of the bypass type dual power automatic transfer switch of the present invention in the duplicate position.

Fig. 8 is a schematic diagram of the standby power supply closing of the bypass dual power automatic transfer switch according to the present invention.

Fig. 9a is an electrical wiring diagram of the closing coils a-DF of the first transfer switch according to the present invention.

Fig. 9b is an electrical wiring diagram of a closing coil R-DF of the second transfer switch according to the present invention.

Fig. 10a is a schematic diagram of the positions of the rocker of the standby spring mechanism and the switch of the closing ready signal when the switch is switched between the double-split position and the closing ready of the common power supply.

FIG. 10b is a diagram showing the combination of the switching lever, the latch and the swing link of the spring mechanism when the switch is in the double-split position and the common power supply is ready to be switched on.

Fig. 11a is a schematic diagram of the switch positions of the swing lever and the closing ready signal of the backup spring mechanism when the switch double-split position is switched and the backup power supply is ready to be closed.

Fig. 11b is a matching diagram of the switching lever, the buckle and the swing rod of the standby spring mechanism when the switch is in a double-division position and the standby power supply is ready to be switched on.

In the figure: 1. the mechanism comprises an operating mechanism, 101, an opening and closing lever, 1011, a first opening and closing lever, 1012, a second opening and closing lever, 102, a buckle, 1021, a first buckle, 1022, a second buckle, 103, a swing rod, 11, a mechanism side plate, 12, a main shaft and 13, a closing electromagnet; 2. a contact system; 3. the system comprises a signal acquisition and transmission device, 30, a driving device, 301, a first driving shaft, 302, a second driving shaft, 31, a common power supply position signal switch, 32, a standby power supply position signal switch, 33 and a switch-on ready signal switch; 4. a first left side plate; 5. a second left side panel; 6. a second right side plate, 61. arc groove; 7. a first right side plate; 8. and indicating the module.

Detailed Description

The following detailed description of the embodiments of the present invention will be described with reference to the accompanying drawings, but the description of the embodiments is not intended to limit the technical solutions, and any changes in form and not essential to the inventive concept should be regarded as the protection scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are based on the position shown in fig. 1, and thus should not be construed as particularly limiting the technical solution provided by the present invention.

References to both normally open and normally closed contacts in the following description refer to the state of a signal switch, such as a microswitch, as its internal contact pair is not being activated.

Referring to fig. 1, the present invention relates to a bypass type dual power automatic transfer switch interlock device, where the bypass type dual power automatic transfer switch includes a first transfer switch (main switch) and a second transfer switch (bypass switch) with the same structure, and the interlock device of the present invention is used to prevent the simultaneous switch-on of the power supplies on different sides, that is, when the normal power supply of the first transfer switch is switched on, the standby power supply of the second transfer switch is prevented from being switched on, and when the standby power supply of the first transfer switch is switched on, the normal power supply of the second transfer switch is prevented from being switched on; when the common power supply of the second change-over switch is switched on, the standby power supply of the first change-over switch is prevented from being switched on, and when the standby power supply of the second change-over switch is switched on, the common power supply of the first change-over switch is prevented from being switched on.

As shown in fig. 1, each transfer switch includes a first left side plate 4, an indication module 8, a second left side plate 5, a contact system 2, an operating mechanism 1, a signal acquisition and transmission device 3, a second right side plate 6, and a first right side plate 7. As shown in fig. 2 and fig. 3, the operating mechanism 1 includes a mechanism side plate 11, a main shaft 12 rotatably disposed in the middle of the mechanism side plate 11, a common spring mechanism corresponding to a common power supply and disposed on two sides of the main shaft 12, a backup spring mechanism corresponding to a backup power supply, and a closing electromagnet 13 fixed in the middle of the mechanism side plate 11 and located above the main shaft 12, where the common spring mechanism and the backup spring mechanism are identical and symmetrically disposed, and both include an opening and closing lever 101 rotatably disposed on the mechanism side plate 11, a buckle 102 rotatably disposed on the mechanism side plate 11, and a swing link 103 driven by the opening and closing lever 101. For the sake of clarity, in fig. 1 and 2, the side located at the near side in the drawing is the side corresponding to the normal power supply, and the side located at the far side is the side corresponding to the backup power supply. Specifically, as shown in fig. 1 and 2, the switching lever 101 located at the near side is a first switching lever 1011 corresponding to a common power supply, and the switching lever 101 located at the far side is a second switching lever 1012 corresponding to a standby power supply. The latch 102 at the near side is embodied as a first latch 1021 corresponding to a common power source, and the latch 102 at the far side is embodied as a second latch 1022 corresponding to a backup power source.

As shown in fig. 3 to 5, the signal collecting and transmitting device 3 includes a driving device 30 and three signal switches, wherein the central part of the driving device 30 is sleeved on the main shaft 12, the two ends of the driving device are respectively provided with a first driving shaft 301 and a second driving shaft 302, the three signal switches are fixed on the second right side plate 6 of the change-over switch, the second right side plate 6 is fixed opposite to the operating mechanism 1, a pair of arc grooves 61 is symmetrically arranged on the second right side plate 6 at two sides corresponding to the main shaft 12, the first driving shaft 301 and the second driving shaft 302 respectively penetrate through the corresponding arc grooves 61 from one side of the second right side plate 6 close to the operating mechanism 1 and then are matched with a signal switch fixed on one side of the second right side plate 6 back to the operating mechanism 1, one of the signal switches is fixed below the left circular arc groove 61 shown in fig. 4 as a common power position signal switch 31, and the common power position signal switch 31 has a normally closed contact. The other signal switch is fixed below the right arc groove 61 shown in fig. 4 as the standby power supply position signal switch 32, and the standby power supply position signal switch 32 has a normally closed contact. The third signal switch serving as a closing ready signal switch 33 is fixed at the top of the second right side plate 6 at a position corresponding to the closing and opening lever 101 and the hasp 102 of the standby spring mechanism, and can be triggered by the closing and opening lever 101 or the oscillating bar 103 of the standby spring mechanism, the closing ready signal switch 33 is provided with a normally closed contact and a normally open contact, and when the switch is triggered, the normally closed contact of the closing ready signal switch 33 is opened and the normally open contact is closed.

As shown in fig. 6, when the switch is switched on, the driving device 30 rotates along with the main shaft 12, and when the main shaft 12 rotates to the normal power switching-on position, the first driving shaft 301 moves to the bottom of the left arc groove 61 shown in fig. 6 to trigger the normal power position signal switch 31 corresponding to the lower part thereof, the normally closed contact of the normal power position signal switch 31 is opened, and the second driving shaft 302 does not trigger the standby power position signal switch 32 corresponding to the lower part thereof, and the normally closed contact of the standby power position signal switch 32 is kept closed.

As shown in fig. 8, when the standby power of the transfer switch is switched on, the main shaft 12 rotates to the standby power switching position, the second driving shaft 302 moves to the bottom wall of the right arc groove 61 shown in fig. 8, and triggers the standby power position signal switch 32 corresponding to the lower side of the second driving shaft, the normally closed contact of the standby power position signal switch 32 is opened, and the normally closed contact of the normally used power position signal switch 31 is kept closed when the first driving shaft 301 does not trigger the normally used power position signal switch 31 corresponding to the lower side of the first driving shaft.

As shown in fig. 7, when the change-over switch is located at the double-split position, the main shaft 12 rotates to the middle position, and then the first driving shaft 301 and the second driving shaft 302 are both located at the middle position of the arc groove 61, and neither the normal power position signal switch 31 nor the standby power position signal switch 32 is triggered, so that the normally closed contact of the normal power position signal switch 31 and the normally closed contact of the standby power position signal switch 32 are both kept closed. In the double-split position of the change-over switch, the operating mechanism 1 of the change-over switch has two positions, a normal power supply closing ready position and a standby power supply closing ready position.

As shown in fig. 10a and 10b, in the normal power supply closing ready position, the opening and closing lever 101 in the normal spring mechanism moves to a position away from the buckle 102 in the normal spring mechanism and the swing rod 103 of the normal spring mechanism, as shown in the position of the left opening and closing lever 101 in fig. 10 b; and the switching-on/off lever 101 in the standby spring mechanism moves to a position close to the hasp 102 in the standby spring mechanism and the swing rod 103 of the standby spring mechanism, and the switching-on/off lever 101 in the standby spring mechanism pushes the swing rod 103 of the standby spring mechanism to rotate, as shown in the position of the right switching-on/off lever 101 in fig. 10b, the switching-on/off lever 101 in the standby spring mechanism or the swing rod 103 of the standby spring mechanism triggers the switching-on ready signal switch 33, so that the normally closed contact of the switching-on ready signal switch 33 is opened, and the normally open contact is closed.

As shown in fig. 11a and 11b, at the standby power supply closing ready position, the opening and closing lever 101 in the standby spring mechanism moves to a position far away from the buckle 102 in the standby spring mechanism and the swing rod 103 of the standby spring mechanism, such as the position shown by the opening and closing lever 101 on the right side in fig. 11 b; the switching-on/off lever 101 in the common spring mechanism moves to a position close to the hasp 102 and the swing rod 103 of the common spring mechanism, and the switching-on/off lever 101 in the common spring mechanism pushes the swing rod 103 of the common spring mechanism to rotate, as shown in the position of the left switching-on/off lever 101 in fig. 10b, at this time, because the switching-on/off lever 101 in the standby spring mechanism moves to a position far away from the hasp 102 and the swing rod 103 of the standby spring mechanism, the switching-on/off lever 101 of the standby spring mechanism and the swing rod 103 of the standby spring mechanism do not trigger the ready signal switch 33, the normally closed contact of the signal switch is kept closed, and the normally open contact of the signal switch is kept open.

Referring to the electrical connection diagrams shown in fig. 9a and 9b, as shown in fig. 9a, the bypass type dual-power automatic transfer switch interlock apparatus of the present invention includes a first transfer switch closing coil a-DF, a first transfer switch common power closing ready signal switch a1_{Ready for}A switch A2 of ready signal for switching on the standby power supply of the first transfer switch_{Ready for}The second transfer switch is a common power position signal switch R1_{Is divided into}And a second transfer switch standby power source position signal switch R2_{Is divided into}Wherein, the first transfer switch is a common power supply closing ready signal switch A1_{Ready for}The normally open contact and the standby power supply position signal switch R2 of the second change-over switch_{Is divided into}The normally closed contacts of the first switching switch are connected in series to form a first branch circuit, and a standby power supply switching-on ready signal switch A2 of the first switching switch_{Is ready for}Normally closed contact of the second transfer switch and a common power position signal switch R1_{Is divided into}The normally closed contacts are connected in series to form a second branch circuit, and the first branch circuit and the second branch circuit are connected in parallel and then connected to a switching-on coil A-DF loop of the first transfer switch.

As shown in fig. 9b, the bypass type dual-power automatic transfer switch interlocking device further includes a second transfer switch closing coil R-DF, and a second transfer switch common power closing ready signal switch R1_{Ready for}A second transfer switch standby power supply closing ready signal switch R2_{Ready for}First transfer switch common power source position signal switch a1_{Is divided into}And a first changeover switch standby power source position signal switch A2_{Is divided into}Wherein, the second transfer switch is a common power supply closing ready signal switch R1_{Ready for}The normally open contact and the first transfer switch standby power supply position signal switch A2_{Is divided into}The normally closed contacts of the first transfer switch are connected in series to form a third branch, and a standby power supply closing ready signal switch R2 of the second transfer switch_{Ready for}Normally closed contact of (2) and first transfer switch common power supply position signal switch A1_{Is divided into}The normally closed contacts are connected in series to form a fourth branch, and the third branch and the fourth branch are connected in parallel and then connected to a closing coil R-DF loop of the second change-over switch.

The two wiring diagrams shown in fig. 9a and 9b work together to achieve the function of preventing the different-side power supplies of the first transfer switch and the second transfer switch from being switched on simultaneously. Taking fig. 9a as an example, when the second transfer switch is located at the dual-split position, that is, neither the normal power position signal switch 31 nor the standby power position signal switch 32 in the second transfer switch is triggered, the normal power position signal switch R1 of the second transfer switch is triggered_{Is divided into}And a second transfer switch standby power supply position signal switch R2_{Is divided into}When the first transfer switch is located at the double-split position and the standby power supply is in the closing ready position, as shown in fig. 11b, the closing ready signal switch 33 is not triggered by the closing and opening lever 101 or the swing rod 103 in the standby spring mechanism, the normally closed contact of the closing ready signal switch 33 is kept closed, and the normally open contact of the closing ready signal switch 33 is kept open, that is, the closing ready signal of the standby power supply of the first transfer switch in fig. 9a is kept closedSwitch A2_{Ready for}The normally closed contact of the first transfer switch is kept closed, and the first transfer switch is a common power supply closing ready signal switch A1_{Ready for}The normally open contact of the first transfer switch (main switch) is kept open, the right branch in fig. 9a is connected, the closing coil a-DF of the first transfer switch (main switch) is energized, and the closing electromagnet 13 of the first transfer switch (main switch) acts to drive the hasp 102 in the standby spring mechanism of the first transfer switch to act, so that the standby power supply of the first transfer switch is closed, that is, the standby power supply of the first transfer switch is allowed to be closed. If the second transfer switch is in the normal power on position, i.e. the first driving shaft 301 of the second transfer switch triggers the normal power position signal switch 31 to act, the normal power position signal switch R1 of the second transfer switch in the right branch_{Is divided into}The normally closed contact of the first transfer switch is opened, even if the first transfer switch is in a standby power supply closing ready state at the moment, the first transfer switch standby power supply closing ready signal switch A2_{Ready for}The normally closed contact of the switch is closed, the right branch is not connected, and the switch A1 is a normally closed power supply ready signal due to the first transfer switch_{Ready for}When the normally open contact is opened and the left branch is not connected, the first transfer switch closing coil (A-DF) is not electrified, and the first transfer switch standby power supply is not allowed to be closed, so that when the second transfer switch is positioned at the common power supply closing position, the first transfer switch standby power supply is prevented from being closed, and the different-side power supply is prevented from being closed simultaneously.

The switch-on ready signal switch 33 of the utility model is provided with two contacts which are a normally open contact and a normally closed contact respectively, the switch-on ready signal switch 33 of the utility model is fixed at the positions of the switch-on/off lever 101 and the swing rod 103 corresponding to the standby spring mechanism, and when the switch is in the switch-on ready state of the standby power supply, the switch is converted into the standby power supply switch-on ready signal switch A2_{Ready for}The normally closed contact of the transfer switch is kept closed, and a switch A1 is used as a power supply closing ready signal switch of the transfer switch_{Ready for}Normally open contact of the transfer switch, i.e. switch ready for switching on of the standby power supply A2_{Ready for}The normally closed contact of the switch outputs a standby closing ready signal, and the switch is a switch A1 for switching the common power supply closing ready signal_{Ready for}Normally open contact of outputs the common sideThe spring mechanism does not output a ready closing signal, and certainly, the ready closing signal switch 33 of the present invention is not limited to the above arrangement position, and the ready closing signal switch 33 may also be fixed at the left position of the second right side plate 6 shown in fig. 4, that is, the ready closing signal switch 33 no longer corresponds to the standby spring mechanism on the right side but corresponds to the common spring mechanism on the left side shown in fig. 4, and two contacts of the ready closing signal switch 33 are adopted, wherein one contact outputs the common ready closing signal, and the other contact outputs the standby ready closing signal. The utility model is not limited to the three signal switches, and the switching-on ready signal switch 33 may be divided into two separate switches, which are a common power switching-on ready signal switch and a standby power switching-on ready signal switch, respectively, the common power switching-on ready signal switch is arranged corresponding to the common spring mechanism, the standby power switching-on ready signal switch is arranged corresponding to the standby spring mechanism, and both the common power switching-on ready signal switch and the standby power switching-on ready signal switch adopt one contact, which may be that the contact of the common power switching-on ready signal switch outputs a common switching-on ready signal, and the contact of the standby power switching-on ready signal switch outputs a standby switching-on ready signal.

Claims

1. The utility model provides a bypass type dual supply automatic transfer switch interlock which characterized in that: comprises a first transfer switch closing coil A-DF, a first transfer switch common power supply closing ready signal switch A1_{Ready for}A switch A2 of ready signal for switching on the standby power supply of the first transfer switch_{Ready for}The second transfer switch is a common power position signal switch R1_{Is divided into}And a second transfer switch standby power source position signal switch R2_{Is divided into}The first transfer switch is a common power supply closing ready signal switch A1_{Ready for}The normally open contact and the standby power supply position signal switch R2 of the second change-over switch_{Is divided into}The normally closed contacts of the first switching switch are connected in series to form a first branch circuit, and a standby power supply switching-on ready signal switch A2 of the first switching switch_{Is ready for}Normally closed contact of the second transfer switch and a common power position signal switch R1_{Is divided into}The normally closed contacts are connected in series to form a second branch circuit, and the first branch circuit and the second branch circuit are connected in parallel and then are connectedTo the switching-on coil A-DF circuit of the first transfer switch.

2. The bypass type dual power automatic transfer switch interlock device according to claim 1, wherein: the interlocking device also comprises a second transfer switch closing coil R-DF and a second transfer switch common power supply closing ready signal switch R1_{Ready for}And a switch R2 of a second transfer switch standby power supply closing ready signal_{Ready for}First transfer switch common power source position signal switch a1_{Is divided into}And a first changeover switch standby power source position signal switch A2_{Is divided into}Wherein, the second transfer switch is a common power supply closing ready signal switch R1_{Ready for}The normally open contact and the first transfer switch standby power supply position signal switch A2_{Is divided into}The normally closed contacts of the first transfer switch are connected in series to form a third branch, and a standby power supply closing ready signal switch R2 of the second transfer switch_{Ready for}Normally closed contact of (2) and first transfer switch common power supply position signal switch A1_{Is divided into}The normally closed contacts are connected in series to form a fourth branch, and the third branch and the fourth branch are connected in parallel and then connected to a closing coil R-DF loop of the second change-over switch.

3. The bypass type dual power automatic transfer switch interlock device according to claim 2, wherein: the bypass type dual-power automatic transfer switch comprises a first transfer switch and a second transfer switch which are identical in structure, and each transfer switch comprises an operating mechanism (1), a contact system (2) and a signal acquisition and transmission device (3).

4. The bypass type dual power automatic transfer switch interlock device according to claim 3, wherein: operating device (1) including mechanism curb plate (11), rotate main shaft (12) that sets up in mechanism curb plate (11) middle part, divide and establish spring mechanism commonly used and the reserve spring mechanism that corresponds stand-by power supply that correspond the power commonly used of main shaft (12) both sides and fix closing a floodgate electro-magnet (13) that just is located main shaft (12) top in mechanism curb plate (11) middle part, spring mechanism commonly used and reserve spring mechanism structure are the same, all including closing and separating brake lever (101), hasp (102) of rotation setting on mechanism curb plate (11) and closing and separating brake lever (101) drive follow-up pendulum rod (103) of closing and separating brake lever (101) of rotation setting on mechanism curb plate (11).

5. The bypass type dual power automatic transfer switch interlock device according to claim 4, wherein: the signal acquisition and transmission device (3) comprises a driving device (30), a common power position signal switch (31), a standby power position signal switch (32) and a closing ready signal switch (33), the center part of the driving device (30) is sleeved on the main shaft (12), a first driving shaft (301) and a second driving shaft (302) are respectively arranged at two ends of the driving device, and when the main shaft (12) rotates to a common power closing position, the first driving shaft (301) triggers the common power position signal switch (31) to open a normally closed contact of the common power position signal switch (31); when the main shaft (12) rotates to a double-division position of the middle position, the first driving shaft (301) does not trigger the common power position signal switch (31) and the second driving shaft (302) does not trigger the standby power position signal switch (32), so that a normally closed contact of the common power position signal switch (31) is kept closed and a normally closed contact of the standby power position signal switch (32) is kept closed; when the main shaft (12) rotates to the standby power supply switching-on position, the second driving shaft (302) triggers the standby power supply position signal switch (32) to enable the normally closed contact of the standby power supply position signal switch (32) to be opened.

6. The bypass type dual power automatic transfer switch interlock device according to claim 5, wherein: the closing ready signal switch (33) is arranged corresponding to the standby spring mechanism and is triggered by a closing and opening lever (101) or a swing rod (103) of the standby spring mechanism, and the closing ready signal switch (33) is provided with a normally closed contact for outputting a closing ready signal of the standby power supply and a normally open contact for outputting a closing ready signal of the common power supply.

7. The bypass type dual power automatic transfer switch interlock device according to claim 6, wherein: when the standby power supply of the transfer switch is switched on and ready, the switching-on/off lever (101) of the standby spring mechanism is positioned at a position far away from the swing rod (103) of the standby spring mechanism, the switching-on/off lever (101) of the standby spring mechanism and the swing rod (103) of the standby spring mechanism do not trigger a switching-on ready signal switch (33), a normally closed contact of the signal switch is kept closed, and a normally open contact of the signal switch is kept open; when the switching-on of the common power supply of the transfer switch is ready, a switching-on/off lever (101) in the common spring mechanism is positioned at a position far away from a swing rod (103) of the common spring mechanism, the switching-on/off lever (101) of the standby spring mechanism drives the swing rod (103) of the standby spring mechanism to act, and a switching-on ready signal switch (33) is triggered by the switching-on/off lever (101) of the standby spring mechanism or the swing rod (103) of the standby spring mechanism, so that a normally closed contact of the signal switch is opened and a normally open contact of the signal switch is closed.

8. The bypass type dual power automatic transfer switch interlock device according to claim 5, wherein: the closing ready signal switch (33) is arranged corresponding to a common spring mechanism and is triggered by a closing and opening lever (101) or a swing rod (103) of the common spring mechanism, and the closing ready signal switch (33) is provided with a normally closed contact and a normally open contact.

9. The bypass type dual power automatic transfer switch interlock device according to claim 5, wherein: the switch-on ready signal switch (33) is two independent switches, and is a common power supply switch-on ready signal switch and a standby power supply switch-on ready signal switch which are provided with a contact respectively, the common power supply switch-on ready signal switch is arranged corresponding to a common spring mechanism, the standby power supply switch-on ready signal switch is arranged corresponding to a standby spring mechanism, the contact of the common power supply switch-on ready signal switch outputs a common power supply switch-on ready signal, and the contact of the standby power supply switch-on ready signal switch outputs a standby power supply switch-on ready signal.