Reversible dual-power automatic change-over switch

Abstract

The invention discloses a reversible dual-power automatic change-over switch. According to the technical scheme, the device comprises an execution mechanism and a wiring mechanism arranged on one side of the execution mechanism, and the wiring mechanism is formed by overlapping independent single-phase power supply wiring mechanisms. Each single-phase power supply wiring mechanism comprises a shell, a main input wiring terminal, a standby input wiring terminal, an output wiring terminal, a moving contact and a moving contact operation mounting bracket, first terminal clamping grooves are formed in the two sides of the upper end of the shell, and second terminal clamping grooves are formed in the two sides of the lower end of the shell; the main input wiring terminal is installed in the first terminal clamping groove on one side in a pluggable mode, and the standby input wiring terminal is installed in the second terminal clamping groove on the same side as the first terminal clamping groove in a pluggable mode. The wiring mechanism has the advantages that the wiring directions of the input wiring terminal and the output wiring terminal of the wiring mechanism can be randomly set according to needs, and the use is more flexible.

Description

Technical Field

[0001] The invention belongs to the field of power control, and in particular relates to a dual power automatic transfer switch. Background Art

[0002] The dual power automatic transfer switch (ATSE) is a device that can automatically switch to the backup power supply when the power is suddenly cut off to ensure the continuous operation of the equipment. It is usually used for automatic switching between one common power supply and one backup power supply. When the common power supply fails or the power is cut off, the ATSE will automatically switch the load to the backup power supply to ensure the normal operation of important equipment. The dual power automatic transfer switch is divided into two specifications: two-phase (2P) and four-phase (4P) according to different scenarios. The structure of the traditional dual power automatic transfer switch, as shown in the Chinese utility model patent with the authorization announcement number "CN 220291725 U" and the name "A dual power automatic transfer switch", includes an actuator and a wiring mechanism provided on one side of the actuator. Among them: the wiring direction and the number of wiring phases of the input wiring terminals and the output wiring terminals of the wiring mechanism are fixed structures. If it is necessary to develop dual power automatic transfer switches with different wiring directions or phases, it is necessary to develop molds separately, resulting in high production costs and inconvenience for end customers. In addition, the arc extinguishing performance of the traditional dual power automatic transfer switch is poor. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a dual power automatic transfer switch with flexible changeover of wiring direction and wiring phase number.

[0004] In order to solve the above problems, the technical solution adopted by the present invention includes: an actuator, a wiring mechanism arranged on one side of the actuator, characterized in that: the wiring mechanism is formed by superimposing independent single-phase power wiring mechanisms, each of the single-phase power wiring mechanisms includes: a housing, a main input wiring terminal, a spare input wiring terminal, an output wiring terminal, a moving contact and a moving contact operation mounting bracket, the housing is provided with first terminal card slots on both sides of the upper end, and second terminal card slots on both sides of the lower end, the main input wiring terminal is pluggable and installed in the first terminal card slot on one side, the spare input wiring terminal is pluggable and installed in the second terminal card slot on the same side as the first terminal card slot, the main input wiring terminal and the spare input wiring terminal are both provided with static contacts on the top, and the output wiring terminal is pluggable and installed in the second terminal card slot on the opposite side; The movable contact operation mounting bracket is rotatably mounted in the housing, and one end is provided with a square linkage shaft extending out of the housing, and the other end is provided with a square linkage shaft groove adapted to the square linkage shaft; The moving contact is fixed on the moving contact operation mounting bracket, which is L-shaped and includes an upper moving contact rod and a lower moving contact rod that are integrally formed. Moving contacts are provided on both sides of the top of the upper moving contact rod, and a moving contact is provided on the upper side of the top of the lower moving contact rod. The output terminal is connected to the moving contact through a flexible wire.

[0005] The reversible dual power automatic transfer switch is characterized in that an arc extinguishing grid groove is integrally formed above the housing corresponding to the static contact.

[0006] The reversible dual power automatic transfer switch is characterized in that the arc extinguishing grid slot is composed of a group of grid columns, and the top of the grid column is provided with a step that rises toward the static contact side.

[0007] The reversible dual power automatic transfer switch is characterized in that the grid column gradually becomes longer toward the static contact side.

[0008] The reversible dual power automatic transfer switch is characterized in that the moving contact operation mounting bracket is connected to the slot on the moving contact through a rail and fixed by a fixing block, and a first barb is provided in the moving contact operation mounting bracket and is hung on the fixing block.

[0009] The reversible dual power automatic transfer switch is characterized in that: the wiring mechanism also includes an end cover covering the single-phase power wiring mechanism, and the end cover is provided with a heat dissipation hole corresponding to the arc extinguishing grid groove, and the end cover is connected to the shell through a second barb at the end.

[0010] The reversible dual power automatic transfer switch is characterized in that an independent execution operating member is provided in the actuator, a square linkage shaft groove is provided at the front end of the execution operating member which is connected to the square linkage shaft of the moving contact operation mounting bracket, automatic operation connecting arms are provided on both sides, and a manual handle is connected to the upper end through a linkage rod.

[0011] The reversible dual power automatic transfer switch is characterized in that the static contact is fixed on the static contact fixing seat of the housing, and a hollow groove is provided at the rear end of the static contact fixing seat.

[0012] The reversible dual power automatic transfer switch is characterized in that a heat dissipation channel is formed between the upper end of the shell corresponding to the arc extinguishing grid grooves.

[0013] The reversible dual power automatic transfer switch is characterized in that parallel holes are provided on the four corners of the housing.

[0014] The advantages of the reversible dual power automatic transfer switch of the present invention are as follows: 1. The wiring directions of the input wiring terminals and the output wiring terminals of the wiring mechanism can be set arbitrarily according to needs, and the use is more flexible; 2. The wiring mechanism is composed of independent single-phase power wiring mechanisms stacked together, and can be set to two-phase (2P) or four-phase (4P) or other specifications as needed, which is more flexible to use; 3. It is easy to maintain. If a phase has a problem, only the corresponding phase needs to be replaced.

[0015] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a two-phase reversible dual power automatic transfer switch of the present invention; Figure 2 It is a cross-sectional view of the two-phase reversible dual power automatic transfer switch of the present invention; Figure 3 It is a structural schematic diagram of a single-phase power supply wiring mechanism of the present invention; Figure 4 is a cross-sectional view of a single-phase power connection mechanism of the present invention; Figure 5 It is an exploded view of the single-phase power connection mechanism of the present invention; Figure 6 It is a structural schematic diagram of the housing of the present invention; Figure 7 It is a structural schematic diagram of the actuator of the present invention; Figure 8 It is a structural schematic diagram of the execution operation member of the present invention; Fig. 9 It is a structural schematic diagram of the movable contact operation mounting bracket of the present invention; Fig.10 It is a structural schematic diagram of the moving contact of the present invention; Fig.11 It is a partial structural schematic diagram of the housing of the present invention; Fig.12 A schematic structural diagram of a four-phase reversible dual-power automatic transfer switch according to the present invention. DETAILED DESCRIPTION

[0017] Reference Figure 1-12As shown, the reversible dual power automatic transfer switch of the present invention comprises an actuator 1 and a wiring mechanism 2 arranged on one side of the actuator 1. The wiring mechanism 2 is formed by stacking independent single-phase power wiring mechanisms 3, which are stacked into a two-phase power supply or a four-phase power supply structure as required. Each of the single-phase power wiring mechanisms 3 comprises: a housing 4, a main input wiring terminal 5, a spare input wiring terminal 6, an output wiring terminal 7, a moving contact 8 and a moving contact operation mounting bracket 9. The housing 4 is provided with a first terminal card slot 10 on both sides of the upper end, and a second terminal card slot 11 on both sides of the lower end of the housing 4. The main input wiring terminal 5 is pluggable and installed in the first terminal card slot 10 on one side, and the spare input wiring terminal 6 is pluggable and installed in the second terminal card slot 11 on the same side as the first terminal card slot 10. Static contacts 12 are provided on the tops of the main input wiring terminal 5 and the spare input wiring terminal 6. The output wiring terminal 7 is pluggable and installed in the second terminal card slot 11 on the opposite side. The movable contact operation mounting bracket 9 is rotatably mounted in the housing 4, and one end of the movable contact operation mounting bracket 9 is provided with a square linkage shaft 13 extending out of the housing 4, and the other end of the movable contact operation mounting bracket 9 is provided with a square linkage shaft groove 14 adapted to the square linkage shaft 13. When the single-phase power wiring mechanism 3 is superimposed, the square linkage shaft 13 is embedded in the adjacent square linkage shaft groove 14, so that the movable contact operation mounting bracket 9 forms a linkage main shaft structure. The movable contact 8 is fixed on the movable contact operation mounting bracket 9, and the movable contact 8 is L-shaped, which includes an upper movable contact rod 15 and a lower movable contact rod 16 formed in one piece. Both sides of the top of the upper movable contact rod 15 are provided with movable contacts 17, and the upper side of the top of the lower movable contact rod 16 is provided with a movable contact 17, and the output wiring terminal 7 is connected to the movable contact 8 through a flexible wire 18. When reversing is required, the main input terminal 5, the standby input terminal 6 and the output terminal 7 are pulled out and plugged into the terminal slots on the other side.

[0018] Preferably, the housing 4 is integrally formed with an arc extinguishing grid slot 19 above the static contact 12. The arc extinguishing grid slot 19 is composed of a group of grid columns 20, and the top of the grid column 20 is provided with a step 21 that gradually rises toward the static contact 12. The grid column 20 also gradually becomes longer toward the static contact 12. Since the arc is usually continuous, the arc can be quickly cut off by combining the gradually lengthening grid column 20 and the ascending step 21, and utilizing the tip of the step 21 and the height difference structure, thereby achieving the effect of rapid arc extinguishing.

[0019] Preferably, the movable contact operation mounting bracket 9 is connected to the card slot 23 on the movable contact 8 through the card rail 22, and is fixed by a fixing block 24. The movable contact operation mounting bracket 9 is provided with a first barb 25 hung on the fixing block 24. During assembly: the movable contact 8 can be installed in the movable contact operation mounting bracket 9 in different directions, and then fixed by the fixing block 24, so as to realize the reversible installation of the movable contact 8.

[0020] Preferably, the wiring mechanism 2 further comprises an end cover 26 covering the single-phase power wiring mechanism 3, and the end cover 26 is provided with a heat dissipation hole 27 corresponding to the arc extinguishing grid slot 19, and the end cover 26 is connected to the housing 4 via a second barb 28 at the end. Through the end cover 26, the stacked single-phase power wiring mechanism 3 forms a whole, which is more beautiful, and at the same time, the internal temperature can be dissipated through the heat dissipation hole 27.

[0021] Preferably, an independent execution member 29 is provided in the actuator 1, and a square linkage shaft groove 14 connected to the square linkage shaft 13 of the moving contact operation mounting bracket 9 is provided at the front end of the execution member 29, and automatic operation connecting arms 30 are provided on both sides of the execution member 29, and a manual handle 32 is connected to the upper end of the execution member 29 through a linkage rod 31. The execution member 29 is connected to the automatic execution device through the automatic operation connecting arm 30. Through the above structure, the execution member 29 is also completely independent from the moving contact operation mounting bracket 9, thereby realizing independent production and assembly of the actuator 1.

[0022] Preferably, the stationary contact 12 is fixed on the stationary contact fixing seat 33 of the housing 4, and a hollow groove 34 is provided at the rear end of the stationary contact fixing seat 33. Since the hollow groove 34 is provided at the rear end of the stationary contact fixing seat 33, the stationary contact fixing seat 33 has a certain tension, which not only has a fixing effect on the stationary contact 12, but also has a certain buffering effect, thereby reducing the vibration caused by closing the switch.

[0023] Preferably, a heat dissipation channel 35 is formed between the upper end of the housing 4 and the arc extinguishing grid slots 19. Through the heat dissipation channel 35, the heat inside the housing can be quickly dissipated.

[0024] Preferably, parallel holes 36 are provided at the four corners of the housing 4. By inserting screws into the parallel holes 36, the connection of adjacent housings 4 can be achieved.

[0025] The above does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of the structure and technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A reversible dual power automatic transfer switch, comprising an actuator (1) and a wiring mechanism (2) arranged on one side of the actuator (1), characterized in that: The wiring mechanism (2) is formed by stacking independent single-phase power wiring mechanisms (3), each of which comprises: a housing (4), a main input wiring terminal (5), a spare input wiring terminal (6), an output wiring terminal (7), a moving contact (8) and a moving contact operation mounting bracket (9), the housing (4) being provided with first terminal slots (10) on both sides of the upper end and second terminal slots (11) on both sides of the lower end, the main input wiring terminal (5) being pluggable and installed in the first terminal slot (10) on one side, the spare input wiring terminal (6) being pluggable and installed in the second terminal slot (11) on the same side as the first terminal slot (10), and the main input wiring terminal (5) and the spare input wiring terminal (6) being provided with static contacts on the top. The movable contact operation mounting bracket (9) is rotatably mounted in the housing (4), and is provided with a square linkage shaft (13) extending out of the housing (4) at one end and a square linkage shaft groove (14) adapted to the square linkage shaft (13) at the other end; the movable contact (8) is fixed to the movable contact operation mounting bracket (9), is L-shaped, and comprises an upper movable contact rod (15) and a lower movable contact rod (16) integrally formed, both sides of the top of the upper movable contact rod (15) are provided with movable contacts (17), and the upper side of the top of the lower movable contact rod (16) is provided with a movable contact (17), and the output terminal (7) is connected to the movable contact (8) via a flexible wire (18).

2. The reversible dual power automatic transfer switch according to claim 1 is characterized in that: The housing (4) is integrally formed with an arc extinguishing grid groove (19) above the stationary contact (12).

3. The reversible dual power automatic transfer switch according to claim 2 is characterized in that: The arc extinguishing grid slot (19) is composed of a group of grid columns (20), and the tops of the grid columns (20) are provided with steps (21) that gradually rise toward the side of the static contact (12).

4. The reversible dual power automatic transfer switch according to claim 3 is characterized in that: The grid column (20) gradually becomes longer towards the stationary contact (12) side.

5. The reversible dual power automatic transfer switch according to claim 1 is characterized in that: The movable contact operation mounting bracket (9) is connected to the clamping groove (23) on the movable contact (8) via a clamping rail (22) and fixed via a fixing block (24); a first barb (25) is provided in the movable contact operation mounting bracket (9) and is hooked to the fixing block (24).

6. The reversible dual power automatic transfer switch according to claim 2 is characterized in that: The wiring mechanism (2) further comprises an end cover (26) covering the single-phase power wiring mechanism (3), and the end cover (26) is provided with a heat dissipation hole (27) at a position corresponding to the arc extinguishing grid slot (19), and the end cover (26) is connected to the housing (4) via a second barb (28) at an end portion.

7. The reversible dual power automatic transfer switch according to claim 1 is characterized in that: An independent actuating operating member (29) is provided in the actuating mechanism (1), the actuating operating member (29) having a square linkage shaft groove (14) at the front end thereof connected to the square linkage shaft (13) of the moving contact operating mounting bracket (9), automatic operation connecting arms (30) at both sides thereof, and a manual handle (32) connected to the upper end thereof via a linkage rod (31).

8. The reversible dual power automatic transfer switch according to claim 1 is characterized in that: The stationary contact (12) is fixed on a stationary contact fixing seat (33) of the housing (4), and a hollow groove (34) is provided at the rear end of the stationary contact fixing seat (33).

9. The reversible dual power automatic transfer switch according to claim 6, characterized in that: A heat dissipation channel (35) is formed between the upper end of the housing (4) and the arc extinguishing grid grooves (19).

10. The reversible dual power automatic transfer switch according to claim 1, characterized in that: Parallel holes (36) are provided at the four corners of the housing (4).

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