Operating mechanism of double power automatic transfer switch and double power automatic transfer switch

Abstract

The utility model provides an operating mechanism of double power automatic transfer switch and double power automatic transfer switch equipped with the operating mechanism, and the operating mechanism includes drive device, transmission device, selection device and carousel, transmission device includes first drive arm and second drive arm who sets apart in carousel both sides, selection device is used for realizing the action transmission of drive device from first position to second position to carousel by one of first drive arm and second drive arm, when the action transmission of drive device from first position to second position is by first drive arm transmission, carousel rotates in first direction, when the action transmission of drive device from first position to second position is by second drive arm transmission, carousel rotates in second direction opposite to first direction. Double power automatic transfer switch includes first switch, second switch, transmission mechanism and the operating mechanism of preceding double power automatic transfer switch. Advantage: its simple structure, action is reliable, can realize two, three position switch's switching.

Description

Technical Field

[0001] This invention belongs to the field of low-voltage electrical technology, specifically relating to an operating mechanism for a dual-power automatic transfer switch and a dual-power automatic transfer switch equipped with the operating mechanism. Background Technology

[0002] Dual power switches are used in power supply systems to prevent the faulty power source from supplying power to the load when one power source fails, while reliably selecting the other power source to ensure continuous power supply. They are commonly used in critical locations such as hospitals, airports, docks, and banks.

[0003] Existing dual-power automatic transfer switches typically use a motor as the power source to drive the moving contact to switch between three positions: closed with the first stationary contact, closed with the second stationary contact, or separated from both stationary contacts. Alternatively, molded case circuit breakers are mounted on both sides of the operating mechanism, which moves the handles of the two circuit breakers between the closed and open positions, similarly enabling the dual-power automatic transfer switch to switch between the normally closed, standby closed, and double-open positions. However, dual-power automatic transfer switches using a motor as the power source usually have long switching times, and a reduction gear mechanism is required on the motor to work in conjunction with the circuit breaker, resulting in a complex structure and increased cost.

[0004] In view of the aforementioned existing technology, it is necessary to reasonably improve the structure of the operating mechanism of the existing dual power supply switch. To this end, the applicant has made a beneficial design, and the technical solution described below arises from this background. Summary of the Invention

[0005] The objective of this invention is to provide an operating mechanism for a dual-power automatic transfer switch and a dual-power automatic transfer switch equipped with the operating mechanism. The mechanism has a simple structure, reliable operation, and can realize the switching between two-position and three-position switches.

[0006] The objective of this invention is achieved as follows: an operating mechanism for a dual-power automatic transfer switch includes a drive device, a transmission device, a selection device, and a turntable. The transmission device includes a first drive arm and a second drive arm disposed on both sides of the turntable. The selection device is used to transmit the action of the drive device from a first position to a second position to the turntable by either the first drive arm or the second drive arm. When the action of the drive device from the first position to the second position is transmitted by the first drive arm, the turntable rotates in a first direction. When the action of the drive device from the first position to the second position is transmitted by the second drive arm, the turntable rotates in a second direction opposite to the first direction.

[0007] In a specific embodiment of the present invention, the driving device includes a main electromagnet having a first position where the moving iron core and the stationary iron core are released, and a second position where the moving iron core and the stationary iron core are attracted, wherein the straight line along the trajectory of the moving iron core passes through the rotation center of the turntable; the selection device includes a selection electromagnet having a selection stationary iron core and a selection moving iron core, wherein the movement direction of the selection moving iron core is perpendicular to the movement direction of the moving iron core, and the selection electromagnet having a first selection position and a second selection position; both the first driving arm and the second driving arm have working positions and non-working positions; in the first selection position, the first driving arm is in the working position and the second driving arm is in the non-working position, and the main electromagnet, the first driving arm, and the turntable form a transmission chain; in the second selection position, the first driving arm is in the non-working position and the second driving arm is in the working position, and the main electromagnet, the second driving arm, and the turntable form a transmission chain.

[0008] In another specific embodiment of the present invention, the first drive arm and the second drive arm have the same structure and are arranged in a mirror image relative to the turntable. Both include a drive end and a connecting end. The working position of the drive arm is when the drive end of either the first drive arm or the second drive arm is located in a drive position that cooperates with the turntable and the connecting end of the drive arm is connected to the main electromagnet. The non-working position of the drive arm is when the drive end of either the first drive arm or the second drive arm leaves the drive position that cooperates with the turntable or when the connecting end of the drive arm is disconnected from the main electromagnet.

[0009] In another specific embodiment of the present invention, the driving device further includes a driving plate, the middle part of which is fixed to the moving iron core, and the connecting end of the first driving arm and the connecting end of the second driving arm are respectively connected to the two ends of the driving plate.

[0010] In another specific embodiment of the present invention, the selection device further includes a position holding mechanism and an elastic reset mechanism. The elastic reset mechanism is used to give the first drive arm and the second drive arm a tendency to return to the working position when they leave the working position. When the main electromagnet is in the first position, while one of the first drive arm and the second drive arm is actuated by the selection electromagnet to move from the working position to the non-working position, the other drive arm is driven by the elastic reset mechanism to return from the non-working position to the working position. During the movement of the main electromagnet from the first position to the second position, the position holding mechanism holds the first drive arm and the second drive arm in the above positions.

[0011] In another specific embodiment of the present invention, the first drive arm and the second drive arm are hinged to both ends of the drive plate via hinge shafts on their respective connecting ends. Both the first drive arm and the second drive arm are provided with limiting shafts. The position holding mechanism includes a pair of n-shaped limiting grooves, which are arranged in a mirror image relative to the turntable. Each limiting groove includes an inner sliding groove, an outer sliding groove, and a top sliding groove connecting the inner and outer sliding grooves. When either the first drive arm or the second drive arm is in the working position and moves with the moving iron core, the limiting shaft moves in the inner sliding groove of the limiting groove. When either the first drive arm or the second drive arm is actuated by the selected electromagnet to move from the working position to the non-working position, the limiting shaft of the drive arm moves from the end of the top sliding groove adjacent to the inner sliding groove to the end adjacent to the outer sliding groove, so that the movement of the drive arm from the working position to the non-working position is a rotational movement centered on the hinge shaft. When either the first drive arm or the second drive arm is in the non-working position and moves with the main electromagnet, the limiting shaft moves in the outer sliding groove of the limiting groove.

[0012] In a further specific embodiment of the present invention, both ends of the drive plate are provided with sliding grooves along the movement direction of the selected moving iron core. The first drive arm and the second drive arm are each provided with sliding shafts adapted to the sliding grooves. The elastic reset mechanism is disposed in the sliding grooves. The switching process between the first drive arm and the second drive arm in the working position and the non-working position is a translational movement along the movement direction of the selected moving iron core. The position holding mechanism includes a pair of limiting grooves extending along the movement direction of the moving iron core. The two are arranged in a mirror image relative to the turntable. A limiting shaft is provided on the side of the first drive arm and the second drive arm facing away from the selected electromagnet. When either the first drive arm or the second drive arm is in the working position, the limiting shaft on that drive arm is located outside the limiting groove. When either the first drive arm or the second drive arm is in the non-working position and moves with the moving iron core, the limiting shaft on it moves within the limiting groove.

[0013] In a further specific embodiment of the present invention, the driving device further includes a driving plate, the driving plate being fixed to the moving iron core, and the selection device further includes a selection slider actuated by the selection moving iron core. When the selection electromagnet operates between the first selection position and the second selection position, the selection moving iron core drives the selection slider to slide between position I and position II on the driving plate. Position I is a position where one end of the selection slider is connected to the connecting end of the first driving arm and the other end of the selection slider is disconnected from the connecting end of the second driving arm; position II is a position where one end of the selection slider is disconnected from the connecting end of the first driving arm and the other end of the selection slider is connected to the connecting end of the second driving arm.

[0014] In another specific embodiment of the present invention, the turntable is provided with a pair of mirror-arranged first drive shafts and a pair of mirror-arranged second drive shafts. The drive ends of the first drive arm and the second drive arm are each provided with a drive surface and a reset surface. During the first movement of the moving iron core from the first position to the second position, the drive arm in the working position pushes the second drive shaft on the same side through the drive surface, causing the turntable to rotate through a first angle. During the process of the moving iron core returning from the second position to the first position, the drive arm pushes the first drive shaft on the same side through the reset surface, causing the first drive shaft to make a circular motion relative to the turntable around the rotation center of the turntable so that the drive surface passes over the first drive shaft. During the second movement of the moving iron core from the first position to the second position, the drive arm pushes the first drive shaft on the same side through the drive surface, causing the turntable to rotate through a second angle. When the turntable rotates through the first angle, the dual power supply automatic transfer switch switches from one of the normal closing position and the standby closing position to the dual open position. When the turntable rotates through the second angle, the dual power supply transfer switch switches from the dual open position to the other of the normal closing position and the standby closing position.

[0015] In yet another specific embodiment of the present invention, the turntable is provided with a pair of mirror-arranged first drive shafts and a pair of mirror-arranged second drive shafts. Both the drive ends of the first and second drive arms are provided with drive surfaces and reset surfaces. During the first movement of the moving iron core from the first position to the second position, the drive arm in the working position pushes the second drive shaft on the same side through the drive surface, causing the turntable to rotate through a first angle. Then, during the process of the moving iron core returning from the second position to the first position, the reset surface of the drive arm pushes the first drive shaft on the same side, and its sliding shaft overcomes elasticity. The pressure of the reset mechanism slides within the groove. The drive arm makes a translational movement away from the turntable so that the drive surface passes over the first drive shaft on the same side. During the second movement of the moving iron core from the first position to the second position, the drive arm pushes the first drive shaft on the same side through the drive surface, causing the turntable to rotate at a second angle. When the turntable rotates through the first angle, the dual power supply automatic transfer switch switches from one of the normal closing position and the standby closing position to the dual open position. When the turntable rotates through the second angle, the dual power supply transfer switch switches from the dual open position to the other of the normal closing position and the standby closing position.

[0016] A dual-power automatic transfer switch includes a first switch, a second switch, a transmission mechanism, and an operating mechanism for the aforementioned dual-power automatic transfer switch. The first switch and the second switch are arranged side by side. The operating mechanism drives the first switch to perform closing and opening actions through the transmission mechanism to connect and disconnect the main power supply. The operating mechanism also drives the second switch to perform closing and opening actions through the transmission mechanism to connect and disconnect the backup power supply.

[0017] The present invention has the following advantages due to the above-mentioned structure: The operating mechanism effectively transmits the motion of the driving electromagnet from the first position to the second position to the turntable by selecting an electromagnet. The intermediate turntable rotates in the first direction and the second direction to realize the switching between the first power position, the second power position and the dual-position of the switch. The entire operating mechanism adopts a direct pull structure with a single driving electromagnet and a single selection electromagnet, which can realize bidirectional rapid reciprocating motion. The entire product has a simple structure and reliable operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention.

[0019] Figure 1a This is a schematic diagram of the electromagnet being in the first selection position when the switch is in the dual-position position as described in Embodiment 1 of the present invention.

[0020] Figure 1b This is a schematic diagram of the commonly used closed position of the switch and the main electromagnet being energized and attracted in Embodiment 1 of the present invention.

[0021] Figure 1c This is a schematic diagram of the commonly used closed position of the switch and the de-energized recovery of the main electromagnet as described in Embodiment 1 of the present invention.

[0022] Figure 1d This is a schematic diagram of the second drive arm in the working position when the switch is in the normal closing position and the electromagnet is in the second selection position as described in Embodiment 1 of the present invention.

[0023] Figure 1e This is a schematic diagram of the main electromagnet being energized and attracted in Embodiment 1 of the present invention, and the second drive arm driving the turntable to rotate at a first angle so that the switch reaches the double-open position.

[0024] Figure 1f This diagram illustrates the process of the second drive arm avoiding the first drive shaft on the right side during the recovery process of the main electromagnet after the main electromagnet is de-energized when the switch is in the double-open position according to Embodiment 1 of the present invention.

[0025] Figure 1g This is a schematic diagram of the first drive arm returning to the working position when the switch is in the double-open position as described in Embodiment 1 of the present invention, the main electromagnet is de-energized and returns to its original position, and the selection electromagnet is de-energized and returns to the first selection position, thereby causing the first drive arm to return to the working position.

[0026] Figure 1h This is a schematic diagram of the second drive arm being in the working position when the switch is in the double-selection position as described in Embodiment 1 of the present invention, and the selection electromagnet is energized again to reach the second selection position.

[0027] Figure 1iThis is a schematic diagram of the main electromagnet being energized and attracted in Embodiment 1 of the present invention, and the second drive arm driving the turntable to rotate at a second angle so that the switch reaches the standby closing position.

[0028] Figure 1j This is a schematic diagram of the first drive arm returning to the working position when the switch is in the standby closed position as described in Embodiment 1 of the present invention, the main electromagnet is de-energized and returns to its original position, and the selected electromagnet is de-energized and returns to its original position.

[0029] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0030] Figure 2a This is a schematic diagram of the first drive arm in the working position when the switch is in the double-selection position and the electromagnet is in the first selection position, as described in Embodiment 2 of the present invention.

[0031] Figure 2b This is a schematic diagram of the main electromagnet being energized and attracted in Embodiment 2 of the present invention, and the first drive arm driving the turntable to rotate to the commonly used closing position.

[0032] Figure 2c This is a schematic diagram of the main electromagnet being de-energized and reset when the switch is in the normally closed position as described in Embodiment 2 of the present invention.

[0033] Figure 2d This is a schematic diagram of the second drive arm in the working position when the switch is in the normal closed position and the electromagnet is energized and located in the second selection position, as described in Embodiment 2 of the present invention.

[0034] Figure 2e This is a schematic diagram of the main electromagnet being energized and attracted in Embodiment 2 of the present invention, and the second drive arm driving the turntable to rotate at a first angle so that the switch reaches the double-open position.

[0035] Figure 2f This is a schematic diagram showing the switch in the dual-position state of Embodiment 2 of the present invention, with the main electromagnet de-energized and the selection electromagnet de-energized and reset.

[0036] Figure 2g This is a schematic diagram showing that, in Embodiment 2 of the present invention, the switch is in the double-selection position, the electromagnet is energized again to reach the second selection position, and the second drive arm reaches the working position.

[0037] Figure 2h This is a schematic diagram of the main electromagnet being energized and attracted in Embodiment 2 of the present invention, and the second drive arm driving the turntable to rotate at a second angle to reach the standby closing position.

[0038] Figure 2i This is a schematic diagram illustrating the switch being in the standby closed position, the main electromagnet being de-energized and released, and the selection electromagnet being de-energized and reset to the first selection position as described in Embodiment 2 of the present invention.

[0039] Figure 2j This is a schematic diagram of the main electromagnet being energized and attracted again in Embodiment 2 of the present invention, and the first drive arm driving the turntable to rotate to reach the double split position.

[0040] Figure 2k This diagram illustrates the process in Embodiment 2 of the present invention where the switch is in the double-open position, the main electromagnet is de-energized and reset, and the first drive arm avoids the first drive shaft on the left.

[0041] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of the present invention.

[0042] Figure 3a This is a schematic diagram of the switch being in the dual-position and the selection electromagnet being in the first selection position as described in Embodiment 3 of the present invention.

[0043] Figure 3b This is a schematic diagram of the main electromagnet being energized and attracted in Embodiment 3 of the present invention, and the first drive arm driving the turntable to rotate to the commonly used closing position.

[0044] Figure 3c This is a schematic diagram of the main electromagnet being de-energized and reset when the switch is in the normally closed position as described in Embodiment 3 of the present invention.

[0045] Figure 3d This is a schematic diagram of the second drive arm in the working position when the switch is in the normal closed position and the electromagnet is energized in the second selection position, as described in Embodiment 3 of the present invention.

[0046] Figure 3e This is a schematic diagram of the main electromagnet being energized and attracted in Embodiment 3 of the present invention, and the second drive arm driving the turntable to rotate at a first angle so that the switch reaches the double-open position.

[0047] Figure 3f This is a schematic diagram showing the second drive arm in the working position when the switch is in the dual-position state, the main electromagnet is de-energized and reset, and the selection electromagnet is reversed in Embodiment 3 of the present invention.

[0048] Figure 3g This is a schematic diagram of the main electromagnet being energized and attracted in Embodiment 3 of the present invention, and the second drive arm driving the turntable to rotate the second angle switch to the standby closing position.

[0049] Figure 3h This is a schematic diagram showing the first drive arm in the working position when the main electromagnet is de-energized and reset as described in Embodiment 3 of the present invention.

[0050] Figure 3i This is a schematic diagram of the main electromagnet being energized and attracted in Embodiment 3 of the present invention, so that the switch is in the double open position.

[0051] Figure 3j This is a schematic diagram of the switch being in the double-open position and the main electromagnet being de-energized and then resetting, as described in Embodiment 3 of the present invention.

[0052] Figure 4 A schematic diagram of a dual-power automatic transfer switch equipped with the operating mechanism of the present invention.

[0053] In the picture:

[0054] 1. Drive unit; 11. Main electromagnet; 12. Moving iron core; 13. Drive plate; 131. Slide groove; 14. Main return spring;

[0055] 2. Transmission device; 21. First drive arm; 22. Second drive arm; 23. Limiting shaft; 201. Drive end; 2011. Drive surface; 2012. Reset surface; 202. Connecting end; 2021. Hinge shaft; 2022. Sliding shaft;

[0056] 3. Selection device; 30. Selection return spring; 31. Selection electromagnet; 32. Selection moving iron core; 33. Position holding mechanism; 331. Inner slide groove; 332. Top slide groove; 333. Outer slide groove; 34. Elastic return mechanism; 35. Selection slider; 350. Clutch groove; 351. Large diameter groove; 352. Small diameter groove;

[0057] 4. Turntable; 41. First drive shaft I; 41'. First drive shaft II; 42. Second drive shaft I; 42'. Second drive shaft II; 43. Clearance bar I; 43'. Clearance bar II; 44. Turntable groove; 45. Reset elastic element I; 45'. Reset elastic element II;

[0058] 5. First switch, 6. Second switch, 7. Transmission mechanism, 71. First transmission rod, 72. Second transmission rod. Detailed Implementation

[0059] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the description of the embodiments is not a limitation on the technical solution. Any formal but not substantive changes made based on the concept of the present invention should be considered within the scope of protection of the present invention.

[0060] In the following description, all directional or orientational concepts involving up, down, left, right, front, and back are based on the positions shown in the corresponding figures, and therefore should not be construed as a special limitation on the technical solutions provided by this invention.

[0061] Please see Figure 1 , Figure 2 , Figure 3This invention relates to an operating mechanism for a dual-power automatic transfer switch, applicable to single-pole double-throw dual-power switches. The switch can be a three-position switch (first power position, second power position, and double open position) or a two-position switch (first power position and second power position). A central rotary table 4 drives the moving contact to rotate in both directions. Alternatively, molded case circuit breakers can be mounted on both sides of the operating mechanism; the rotation of the rotary table 4 drives the movement of the circuit breaker handles on both sides, thus forming a CB-class dual-power automatic transfer switch. Figure 4 As shown.

[0062] The operating mechanism of the present invention will be described below through three embodiments, such as... Figure 1a , Figure 2 , Figure 2a , Figure 3 , Figure 3a As shown, the operating mechanism includes a drive device 1, a transmission device 2, a selection device 3, and a turntable 4. The transmission device 2 includes a first drive arm 21 and a second drive arm 22 respectively disposed on both sides of the turntable 4. The selection device 3 is used to transmit the movement of the drive device 1 from a first position to a second position to the turntable 4 by either the first drive arm 21 or the second drive arm 22. When the movement of the drive device 1 from the first position to the second position is transmitted by the first drive arm 21, the turntable 4 rotates in a first direction. When the movement of the drive device 1 from the first position to the second position is transmitted by the second drive arm 22, the turntable 4 rotates in a second direction opposite to the first direction.

[0063] The driving device 1 is composed of a main electromagnet 11, which includes a stationary iron core, a moving iron core 12, a coil, a main return spring 14, etc. When the coil is energized, the moving iron core 12 moves towards the stationary iron core against the spring force of the main return spring 14, that is, it moves from the first position to the second position. When the coil is de-energized, the moving iron core 12 returns from the second position to the first position under the spring force of the main return spring 14. This is a known technology. When the moving iron core 12 and the stationary iron core are released, the moving iron core 12 is in the first position. When the moving iron core 12 and the stationary iron core are attracted, the moving iron core 12 is in the second position. That is, the main electromagnet 11 has a first position where the moving iron core 12 and the stationary iron core are released, and a second position where the moving iron core 12 and the stationary iron core are attracted. The first position of the moving iron core 12 is as follows: Figure 1a , Figure 2a , Figure 3a The position of the moving iron core 12, and the second position of the moving iron core 12 as follows: Figure 1b , Figure 2b , Figure 3b The location of the moving iron core 12. The straight line along the trajectory of the moving iron core 12 passes through the rotation center of the turntable 4.

[0064] The selection device 3 is composed of a selection electromagnet 31, which includes a stationary selection core, a moving selection core 32, a coil, and a selection return spring 30. The moving selection core 32 moves in a direction perpendicular to the moving direction of the moving core 12. The selection electromagnet 31 has a first selection position and a second selection position. When the moving selection core 32 and the stationary selection core are released, the moving selection core 32 is in the first selection position. When the moving selection core 32 and the stationary selection core are attracted together, the moving selection core 32 is in the second selection position.

[0065] The selection electromagnet 31 can be a monostable electromagnet. When the coil is energized, the moving iron core 32 moves towards the stationary iron core against the spring force of the selection reset spring 30, that is, it moves from the first selection position to the second selection position. When the coil is de-energized, the moving iron core 32 returns from the second selection position to the first selection position under the spring force of the selection reset spring 30. Alternatively, it can be a bistable electromagnet, meaning that each time the coil is energized, the moving iron core 32 moves once, that is, it moves from the first selection position to the second selection position. After the movement is complete, it remains in the second selection position, waiting for the coil to be energized again before moving the moving iron core 32 moves again, from the second selection position to the first selection position, and after the movement is complete, it remains in the first selection position. The first selection position of the moving iron core 32 is as follows: Figure 1a , Figure 2a , Figure 3a The position of the moving iron core 32 is selected, and the second selection position for selecting the moving iron core 32 is as follows: Figure 1d , Figure 2d , Figure 3d Select the location of the moving iron core 32.

[0066] Example 1

[0067] like Figures 1a to 1jAs shown, the operating mechanism includes a main electromagnet 11, a turntable 4, a first drive arm 21, a second drive arm 22, and a selection electromagnet 31. The first drive arm 21 and the second drive arm 22 are hinged to both ends of the drive plate 13 via hinge shafts 2021 on their respective connecting ends 202. The middle part of the drive plate 13 is fixed to the moving iron core 12. The first drive arm 21 and the second drive arm 22 have the same structure and are respectively arranged on both sides of the turntable 4 in a mirror arrangement. The first drive arm 21 and the second drive arm 22 are respectively provided with limit shafts 23. The limit shafts 23 and the hinge shafts 2021 are arranged in a symmetrically arranged position holding mechanism 33 and can slide up and down along the position holding mechanism 33. The position holding mechanism 33 includes a pair of "n"-shaped limit grooves, which are arranged in a mirror arrangement relative to the turntable 4. Each limit groove includes an inner slide groove 331, an outer slide groove 333, and a top slide groove 332 that communicates with the inner slide groove 331 and the outer slide groove 333. The first drive arm 21 and the second drive arm 22 are provided with drive bosses on the side facing the turntable 4. The drive bosses are drive ends 201, on which drive surfaces 2011 and reset surfaces 2012 are formed. The turntable 4 is located between the first drive arm 21 and the second drive arm 22, and is on the same center line as the main electromagnet 11. More specifically, the straight line of the movement trajectory of the moving iron core 12 passes through the rotation center of the turntable 4. The turntable 4 is provided with a pair of mirror-arranged first drive shafts, namely first drive shaft I 41 and first drive shaft II 41', and a pair of mirror-arranged second drive shafts, namely second drive shaft I 42 and second drive shaft II 42'. The first drive shafts I 41 and first drive shaft II 41' are respectively hinged in the turntable slide groove 44 by avoidance rods I 43 and avoidance rods II 43', and respectively abut against the two ends of the turntable slide groove 44 by reset elastic members I 45 and reset elastic members II 45'. The selection electromagnet 31 is located between the first drive arm 21 and the second drive arm 22, and drives the first drive arm 21 and the second drive arm 22 to move between the working position and the non-working position by selecting the moving iron core 32.

[0068] like Figure 1a As shown, the operating mechanism is initially in a dual-position state, with both the main electromagnet 11 and the selection electromagnet 31 de-energized. Under the action of the main return spring 14, the moving iron core 12 in the main electromagnet 11 drives the first drive arm 21 and the second drive arm 22 to the uppermost position. Simultaneously, elastic reset mechanisms 34 are installed at the hinge points of the first drive arm 21 and the second drive arm 22 with the drive plate 13. These elastic reset mechanisms 34 are used to ensure that the first drive arm 21 and the second drive arm 22 have a tendency to return to the working position when they leave the working position. For example, in... Figure 1aIn this embodiment, the first drive arm 21 is in the working position under the action of the elastic reset mechanism 34. The elastic reset mechanism 34 is a torsion spring, sleeved on the hinge shaft 2021. At this time, the limiting shaft 23 of the first drive arm 21 is in the inner slide groove 331. Under the action of the selected moving iron core 32, the second drive arm 22 deflects around the hinge shaft 2021 by a certain angle, so that the limiting shaft 23 on it is in the end where the top slide groove 332 and the outer slide groove 333 are connected. When the operating mechanism needs to perform the normal (first power) closing operation, the main electromagnet 11 is energized, so that the moving iron core 12 moves from the first position to the second position, and drives the first drive arm 21 and the second drive arm 22 to move downward together, so that the driving surface 2011 on the driving end 201 of the first drive arm 21 abuts against the first drive shaft I 41 on the left side of the turntable 4, so that the turntable 4 rotates counterclockwise by an angle in the first direction, realizing the normal closing operation, such as Figure 1b As shown, during this process, due to the deflection of the second drive arm 22 at an angle, the hinge shaft 2021 moves within the inner slide groove 331, and the limiting shaft 23 moves within the outer slide groove 333. The second drive arm 22 disengages from both the first drive shaft II 41' and the second drive shaft II 42' on the right side of the turntable 4. When the turntable 4 reaches its position, the main electromagnet 11 is de-energized, and the moving iron core 12, under the action of the main return spring 14, drives the first drive arm 21 and the second drive arm 22 to return from the second position to the first position, as shown. Figure 1c As shown.

[0069] When the operating mechanism needs to perform a normal (first power) tripping operation, the electromagnet 31 is energized, and the cooperating moving iron core 32 pushes the first drive arm 21 to deflect counterclockwise by an angle, causing the limiting shaft 23 on the first drive arm 21 to slide from the inner slide groove 331 along the top slide groove 332 into the outer slide groove 333. In this embodiment, a connecting rod can also be connected between the first drive arm 21 and the second drive arm 22. Due to the movement of the first drive arm 21, the connecting rod drives the second drive arm 22 to slide from the outer slide groove 333 along the top slide groove 332 into the inner slide groove 331. Of course, the connecting rod can also be omitted. Due to the leftward movement of the moving iron core 32, the pushing pressure on the second drive arm 22 is released, and the second drive arm 22 returns from the non-working position to the working position under the action of the elastic reset mechanism 34. Figure 1d As shown, at this time, the main electromagnet 11 is energized, which drives the first drive arm 21 and the second drive arm 22 from the first position to the second position through the moving iron core 12. This causes the drive surface 2011 on the drive end 201 of the second drive arm 22 to abut against the second drive shaft II 42' on the right side of the turntable 4, and drives the turntable 4 to rotate clockwise through the first angle, realizing the normal opening operation and reaching the double open position of the switch. Figure 1eAs shown, during this process, the first drive arm 21 disengages from the turntable 4. When the mechanism reaches its position, the main electromagnet 11 and the selection electromagnet 31 are de-energized. The moving iron core 12, under the action of the main return spring 14, drives the first drive arm 21 and the second drive arm 22 back from the second position to the first position. During the reset process, the reset surface 2012 on the drive end 201 of the second drive arm 22 abuts against the right-side first drive shaft II 41'. The first drive shaft II 41' will make a circular motion away from the second drive arm 22 within the turntable groove 44 until the drive surface 2011 of the second drive arm 22 passes the right-side first drive shaft II 41'. Then, under the action of the reset elastic element II 45', the right-side first drive shaft II 41' abuts against the right end face of the turntable groove 44. Figure 1f As shown. When the first drive arm 21 and the second drive arm 22 are reset to the first position, i.e., when the first drive arm 21 and the second drive arm 22 are in the upper position, the selected moving iron core 32 is de-energized and reset, i.e., the selected moving iron core 32 moves to the right, releasing the pressure on the first drive arm 21. Under the action of the elastic reset mechanism 34, the first drive arm 21 returns from the non-working position to the working position, i.e., it deflects clockwise by an angle, so that the limiting shaft 23 on the first drive arm 21 slides from the outer slide groove 333 along the top slide groove 332 into the inner slide groove 331. Meanwhile, the second drive arm 22, due to the action of the linkage or the reset spring of the selected electromagnet, overcomes the action of the elastic reset mechanism of the second drive arm and also deflects clockwise by an angle. The limiting shaft 23 of the second drive arm 22 slides from the inner slide groove 331 along the top slide groove 332 into the outer slide groove 333. Figure 1g As shown.

[0070] When the operating mechanism needs to perform a backup (second power supply) closing operation, the selector electromagnet 31 is energized, and its selector moving iron core 32 pushes the first drive arm 21 to deflect counterclockwise by an angle, causing the limiting shaft 23 on the first drive arm 21 to slide from the inner slide groove 331 along the top slide groove 332 into the outer slide groove 333. Meanwhile, the second drive arm 22 slides from the outer slide groove 333 along the top slide groove 332 into the inner slide groove 331. Figure 1h As shown, at this time, the main electromagnet 11 is energized, which drives the first drive arm 21 and the second drive arm 22 from the first position to the second position through the moving iron core 12. This causes the drive surface 2011 on the drive end 201 of the second drive arm 22 to abut against the first drive shaft II 41' on the right side of the turntable 4, and drives the turntable 4 to rotate in the second direction opposite to the first direction, that is, to rotate clockwise through the second angle, thus realizing the standby closing operation. During this process, the first drive arm 21 disengages from the turntable 4, as shown in the figure. Figure 1iAs shown. When the mechanism reaches its position, the main electromagnet 11 and the selection electromagnet 31 are de-energized. Under the action of the main return spring 14, the moving iron core 12 drives the first drive arm 21 and the second drive arm 22 to return from the second position to the first position. After the first drive arm 21 and the second drive arm 22 return to the first position, under the action of the elastic return mechanism 34, the first drive arm 21 deflects clockwise by an angle, causing the limiting shaft 23 on the first drive arm 21 to slide from the outer slide groove 333 along the top slide groove 332 into the inner slide groove 331. The limiting shaft 23 on the second drive arm 22 slides from the inner slide groove 331 along the top slide groove 332 into the outer slide groove 333. Figure 1j The process of tripping the backup (second power supply) switch is similar to the above.

[0071] When the second drive shaft I 42 and the first drive shaft II 41' on the turntable 4 are removed, and the first drive shaft I 41 and the second drive shaft II 42' are fixedly connected to the turntable 4, two-position operation can be realized, and the operation process is similar to the above process.

[0072] In this embodiment, the limiting shaft 23 moves within the n-shaped limiting groove, and the hinge shaft 2021 moves within the inner sliding groove 331 of the n-shaped limiting groove. Of course, it is not limited to the above method. A sliding groove can also be provided separately for the hinge shaft 2021, that is, the hinge shaft 2021 no longer moves within the inner sliding groove 331 of the n-shaped limiting groove, and the n-shaped limiting groove is provided separately for the limiting shaft 23. The sliding groove provided separately for the hinge shaft 2021 and the other n-shaped limiting groove can both be provided on the housing of the dual power automatic transfer switch.

[0073] Combination Figure 4The dual-power automatic transfer switch equipped with the above-mentioned operating mechanism also includes a first switch 5, a second switch 6, and a transmission mechanism 7. The first switch 5 and the second switch 6 are arranged side by side. The operating mechanism drives the first switch 1 to perform closing and opening actions through the transmission mechanism 7 to connect and disconnect the normal power supply. The operating mechanism also drives the second switch 2 to perform closing and opening actions through the transmission mechanism 7 to connect and disconnect the backup power supply. Specifically: When the main electromagnet 11 is energized and engaged, the first drive arm 21 drives the operating mechanism's turntable 4 to rotate counterclockwise through a first angle in the first direction. This, in turn, drives the right-side second switch 6 handle downwards via the second transmission rod 72, achieving a standby opening operation. Upon reaching the double-open position, the main electromagnet 11 is energized and engaged again, continuing to drive the operating mechanism's turntable 4 to rotate counterclockwise through a second angle in the first direction via the first drive arm 21. This, in turn, drives the left-side first switch 5 handle upwards via the first transmission rod 71, achieving a normal closing operation. Similarly, when the main electromagnet 11 is energized and engaged, the second drive arm 22 drives the operating mechanism's turntable 4 to rotate clockwise through a first angle in the second direction. This, in turn, drives the left-side first switch 5 handle downwards via the first transmission rod 71, achieving a normal opening operation. Upon reaching the double-open position, the main electromagnet 11 is energized and engaged again, continuing to drive the operating mechanism's turntable 4 to rotate clockwise through a second angle in the second direction. This, in turn, drives the right-side second switch 6 handle upwards via the second transmission rod 72, achieving a standby closing operation. Of course, in this embodiment, the first switch 5 can also be used to control the backup power supply while the second switch 6 is used to control the main power supply, that is, the first switch is used to control the first power supply while the second switch is used to control another power supply (the second power supply).

[0074] During the operation of the above mechanism, it takes about 50ms for the main electromagnet to first engage with the standby trip switch, and about 50ms for the electromagnet to engage with the normal closing switch for the second time. Including the reset time of the intermediate electromagnet, the entire switch completes one switching action in less than 0.5s, and can even reach less than 0.25s, which can meet the switching needs of particularly important primary loads in medical settings and other places.

[0075] Example 2

[0076] like Figures 2a to 2kAs shown, the operating mechanism includes a main electromagnet 11, a turntable 4, a first drive arm 21, a second drive arm 22, and a selection electromagnet 31. The middle part of the drive plate 13 is fixed to the moving iron core 12. The left end of the drive plate 13 is set corresponding to the first drive arm 21 and has a groove 131 extending along the movement direction of the selection moving iron core 32. Similarly, the right end of the drive plate 13 is set corresponding to the second drive arm 22 and also has a groove 131 with the same structure. The first drive arm 21 and the second drive arm 22 are provided with sliding shafts 2022 facing their respective ends of the drive plate 13. The sliding shafts 2022 are slidably disposed in the grooves 131. On the side of the first drive arm 21 and the second drive arm 22 facing away from the selection electromagnet 31, a limiting shaft 23 is respectively provided. On the outer side of the first drive arm 21 and the second drive arm 22, a pair of position holding mechanisms 33 are respectively provided. The position holding mechanism 33 includes a pair of limiting grooves extending along the movement direction of the moving iron core 12. The two are arranged in a mirror image with respect to the turntable 4. The limiting shaft 23 is in the left and right position holding mechanisms 33 and can slide up and down along the position holding mechanism 33. The first drive arm 21 and the second drive arm 22 adopt a mirror design and are provided with a drive boss on the side facing the turntable 4. The drive boss is the drive end 201 of each drive arm. The drive end 201 is divided into a drive surface 2011 and a reset surface 2012. The turntable 4 is located between the first drive arm 21 and the second drive arm 22 and is on the same center line as the main electromagnet 11. The turntable 4 is mirror-mounted with a pair of first drive shafts and a pair of second drive shafts, similar to Embodiment 1. The pair of first drive shafts are first drive shaft I 41 and first drive shaft II 41', and the pair of second drive shafts are second drive shaft I 42 and second drive shaft II 42'. The selection electromagnet 31 is located between the first drive arm 21 and the second drive arm 22, and drives the first drive arm 21 and the second drive arm 22 to move between the working position and the non-working position through the selection moving iron core 32. The operation process is similar to the process described above.

[0077] Specifically as follows: Figure 2a As shown, the main electromagnet 11 is in the first position, and the operating mechanism is in the normal driving side, that is, the selection moving iron core 32 is in the first selection position. At this time, the first driving arm 21 is in the working position, and the second driving arm 22 is in the non-working position. Unlike embodiment 1, the first driving arm 21 and the second driving arm 22 switch between the working position and the non-working position by translation and sliding. At this time, it is a double position. When the normal (first power) closing is required, the main electromagnet 11 is energized, the moving iron core 12 moves down, and drives the driving plate 13 to move down. Thus, the driving surface 2011 on the first driving arm 21 drives the first driving shaft I 41 on the left side of the turntable 4, causing the turntable 4 to rotate counterclockwise by an angle in the first direction. When the moving iron core 12 reaches the second position, the switch reaches the normal closing position.Figure 2b As shown, after the action is completed, the main electromagnet 11 is de-energized, and the moving iron core 12 returns from the second position to the first position under the action of the main return spring 14 inside the main electromagnet 11. This drives the drive plate 13, the first drive arm 21, and the second drive arm 22 to return from the second position to the first position. During this process, the first drive arm 21 is in the working position, while the second drive arm 22 is in the non-working position due to the pushing of the moving iron core 32 and the cooperation between the limiting shaft 23 on the side of the second drive arm 22 and the slide groove 131. Figure 2c As shown.

[0078] To switch from the main power supply to the backup power supply, first switch the switch to the dual-position. Then, energize electromagnet 31. Figure 2d As shown, the selected moving iron core 32 moves to the left, pushing the first drive arm 21. The sliding shaft 2022 of the first drive arm 21 overcomes the elastic reset mechanism 34 in the slide groove 131. In this embodiment, the elastic reset mechanism 34 is a compression spring set in the slide groove. The sliding shaft 2022 of the first drive arm 21 moves to the left, and the first drive arm 21 switches from the working position to the non-working position. That is, the drive end 201 of the first drive arm 21 leaves the drive position that cooperates with the turntable 4. At the same time, due to the release of the selected moving iron core 32 to the second drive arm 22, the second drive arm 22 switches from the non-working position to the working position under the action of the elastic reset mechanism 34 on this side. That is, it moves to the left relative to the drive plate 13, so that the drive end 201 of the second drive arm 22 reaches the drive position that cooperates with the second drive shaft II 42' on the right side of the turntable 4. After the selected electromagnet 31 is energized, the main electromagnet 11 is energized, and its moving iron core 12 drives the drive plate 13 to move from top to bottom. The drive surface 2011 of the second drive arm 22 pushes the second drive shaft II 42' on the right side, causing the turntable 4 to rotate clockwise through the first angle and reach the double-open position of the switch. Figure 2e As shown.

[0079] When the main electromagnet 11 is de-energized and the selection electromagnet 31 is also de-energized, the drive plate 13 drives the first drive arm 21 and the second drive arm 22 to move from the second position to the first position. During this process, the second drive arm 22, located in the working position, has its reset surface 2012 pushed by the right drive shaft II 41' along its movement path. This causes the second drive arm 22 to overcome the spring force of the elastic reset mechanism 34 and slightly move to the right within the slide groove 131 to avoid the right drive shaft II 41' until the drive surface 2011 of the second drive arm 22 passes the right drive shaft II 41'. The second drive arm 22 returns to its original position under the action of the elastic reset mechanism 34. However, at this time, the selection electromagnet 31 is de-energized, and the selection moving iron core 32 moves to the right under the action of its selection reset spring 30. The selection moving iron core 32 pushes the second drive arm 22 to overcome the spring force of the elastic reset mechanism 34 and enter the non-working position. At this time, due to the loss of the pushing action of the selection moving iron core 32, the first drive arm 21 enters the working position from the non-working position under the action of the spring force of the elastic reset mechanism 34 on the same side. That is, the drive end 201 of the first drive arm 21 reaches the driving position that cooperates with the first drive shaft I 41 on the left side of the turntable 4. Figure 2f As shown, the switch is in the double open position at this time.

[0080] Furthermore, when the electromagnet 31 is energized, its moving iron core 32 moves to the left, causing the first drive arm 21 to move from the working position to the non-working position. Simultaneously, the second drive arm 22 returns to the working position from the non-working position under the push of the elastic reset mechanism 34 on the same side. Figure 2g As shown. Simultaneously with the selection electromagnet 31 being energized, the main electromagnet 11 is energized, and the moving iron core 12 drives the drive plate 13, causing the first drive arm 21 and the second drive arm 22 to move from the first position to the second position, as shown. Figure 2h As shown, during this process, the driving surface 2011 of the second drive arm 22 pushes the first drive shaft II 41' on the right side of the turntable 4, causing the turntable 4 to rotate in a second direction opposite to the first direction, that is, clockwise through a second angle, reaching the standby (second power supply) closing position. Next, both the main electromagnet 11 and the selection electromagnet 31 are de-energized, the moving iron core 12 returns to the first position, the selection moving iron core 32 returns to the first selection position, the first drive arm 21 reaches the working position, and the second drive arm 22 reaches the non-working position, as shown. Figure 2i As shown. In the aforementioned standby closing position, if the switch needs to be opened, the main electromagnet 11 is energized, the left first drive arm 21 is in the working position, and is pulled by the drive plate 13 from the upper first position to the lower second position. The drive surface 2011 on the drive end 201 of the first drive arm 21 pushes the left second drive shaft I 42 on the turntable 4, causing the turntable 4 to rotate counterclockwise through the first angle and reach the double-opening position, as shown.Figure 2j As shown. Next, the main electromagnet 11 is de-energized, and the moving iron core 12 drives the first drive arm 21 and the second drive arm 22 to return from the lower second position to the upper first position via the drive plate 13. During this process, similarly, since the first drive arm 21 is in the working position, the left first drive shaft I 41 on the turntable 4 is within the movement path of the drive end 201 of the first drive arm 21. The reset surface 2012 on it is pushed by the first drive shaft I 41, causing the first drive arm 21 to move to the left. That is, the sliding shaft 2022 of the first drive arm 21 overcomes the spring force of the elastic reset mechanism 34 on the same side and moves to the left in the slide groove 131, as shown. Figure 2k As shown, the driving end 201 of the first drive arm 21 avoids the left first drive shaft I41. After the driving surface 2011 on the first drive arm 21 passes the left first drive shaft I41, the first drive arm 21 returns to the working position under the action of the elastic reset mechanism 34, as shown. Figure 2a As shown.

[0081] In the two embodiments described above, the connecting end 202 of the first drive arm 21 and the connecting end 202 of the second drive arm 22 are respectively connected to both ends of the drive plate 13 of the drive device 1. Example 1 is a hinged connection, and Example 2 is a sliding connection. In the working position, the drive end 201 of any drive arm is located in the drive position that cooperates with the turntable 4. In the non-working position, the drive end 201 of any drive arm leaves the drive position that cooperates with the turntable 4. In Embodiment 1, the first drive arm 21 and the second drive arm 22 switch between the working position and the non-working position by rotation. In Embodiment 2, the first drive arm 21 and the second drive arm 22 switch between the working position and the non-working position by left and right translation. Furthermore, when the main electromagnet 11 is in the first position, one of the first drive arms 21 and the second drive arm 22 is actuated by the selection electromagnet 31 to move from the working position to the non-working position, while the other drive arm of the first drive arm 21 and the second drive arm 22 is driven by the elastic reset mechanism 34 to return from the non-working position to the working position. During the movement of the main electromagnet 11 from the first position to the second position, the position holding mechanism 33 holds the first drive arm 21 and the second drive arm 22 in the above positions.

[0082] Example 3

[0083] In Example 3, which will be described below, as follows Figures 3a to 3j As shown, whether the drive arm is in the working position is distinguished by whether the drive arm's connecting end 202 is connected to the main electromagnet 11, as detailed below:

[0084] The driving device 1 includes a main electromagnet 11, which includes a moving iron core 12, a stationary iron core, a main return spring 14, a coil, etc. The driving device 1 also includes a driving plate 13, which is fixed to the moving iron core 12. The selection device 3 includes a selection electromagnet 31, which includes a selection moving iron core 32, a stationary iron core, a selection return spring 30, a coil, etc. The selection device 3 also includes a selection slider 35 actuated by the selection moving iron core 32. When the selection electromagnet 31 moves between the first selection position and the second selection position, the selection moving iron core 32 drives the selection slider 35 to slide between position I and position II on the driving plate 13. Specifically, position I is the position where one end of the selection slider 35 is connected to the connection end 202 of the first driving arm 21, and the other end of the selection slider 35 is disconnected from the connection end 202 of the second driving arm 22. Figure 3a The position of slider 35 is shown. Position II is the position where one end of slider 35 is disconnected from the connection end 202 of the first drive arm 21, and the other end of slider 35 is connected to the connection end 202 of the second drive arm 22, as specifically shown below. Figure 3d The position of slider 35 is shown.

[0085] The work process is as follows: Figure 3aAs shown, when the switch is in the double-open position, the connecting end 202 of the first drive arm 21 is connected to one end of the selection slider 35, and the first drive arm 21 is in the working position. Meanwhile, the connecting end 202 of the second drive arm 22 is disconnected from the selection slider 35, and the second drive arm 22 is in the non-working position. The left and right drive shafts of the pair of first drive shafts, namely first drive shaft I 41 and first drive shaft II 41', are respectively hinged in the turntable groove 44 via avoidance rods I 43 and II 43', and respectively abut against both ends of the turntable groove 44 via reset elastic members I 45 and II 45'. The selection slider 35 is provided with clutch grooves 350 at two positions corresponding to the first drive arm 21 and the second drive arm 22. The pair of clutch grooves 350 are arranged in a mirror image and each includes a large-diameter groove 351 that can disengage from the sliding shaft 2022 on the connecting end 202 of either drive arm and a small-diameter groove 352 that can connect to the sliding shaft 2022 on the connecting end 202 of either drive arm. The selection slider 35 can move left and right with the selection moving iron core 32. When the selection moving iron core 32 is in the first selection position, that is, when the selection moving iron core 32 is in the right position, the small-diameter groove 352 in the left clutch groove 350 corresponding to the first drive arm 21 is engaged. The aperture slot 352 engages with the sliding shaft 2022 of the connecting end 202 of the first drive arm 21 to connect the first drive arm 21 to the drive plate 13, so that the first drive arm 21 is in the working position and can move up and down with the movement of the moving iron core 12. At this time, the large aperture slot 351 in the right clutch slot 350 of the second drive arm 22 engages with the sliding shaft 2022 of the connecting end 202 of the second drive arm 22, so that the second drive arm 22 is disengaged from the drive plate 13 and is in the non-working position. During the movement of the moving iron core 12, the second drive arm 22 remains stationary. At this time, the main electromagnet 11 is energized, and the moving iron core 12 moves from the first position to the second position, pulling the first drive arm 21 downward. The driving surface 2011 on the driving end 201 of the first drive arm 21 pushes the first drive shaft I 41 on the left side of the turntable 4, so that the turntable 4 rotates counterclockwise by a certain angle in the first direction, realizing the closing of the normal power supply. Figure 3b As shown. After the closing action is completed, the main electromagnet 11 resets, that is, returns from the second position to the first position, driving the first drive arm 21 from the lower position to the upper position, as shown. Figure 3c As shown.

[0086] To switch from the main power supply to the backup power supply, the electromagnet 31 is energized, driving the selection slider 35 to slide to the left on the drive plate 13. This causes the clutch groove 350 to move, and the sliding shaft 2022 on the connecting end 202 of the first drive arm 21 engages with the large-diameter groove 351 in the clutch groove 350. The first drive arm 21 disengages from the drive plate 13, changing from the working position to the non-working position. The sliding shaft 2022 on the connecting end 202 of the second drive arm 22 engages with the small-diameter groove 352 in the clutch groove 350, connecting the second drive arm 22 to the drive plate 13, changing from the non-working position to the working position. Figure 3d As shown. At this time, the main electromagnet 11 is energized, causing the driving surface 2011 on the driving end 201 of the second driving arm 22 to move downward, pushing the right second driving shaft II 42' on the turntable 4. The turntable 4 rotates through the first angle, moving from the normally closed position to the double open position, as shown. Figure 3e As shown. When the main electromagnet 11 is de-energized, it drives the second drive arm 22 to return from the lower position to the upper position. During the return process, the reset surface 2012 on the second drive arm 22 pushes the right first drive shaft II 41'. The first drive shaft II 41' will make a circular motion away from the second drive arm 22 within the turntable groove 44 until the drive surface 2011 of the second drive arm 22 passes the right first drive shaft II 41'. Then, the right first drive shaft II 41' abuts against the right end face of the turntable groove 44 under the action of the avoidance rod II 43'. Figure 3f As shown. Next, the de-energization of the selection electromagnet 31 will cause the selection moving iron core 32 to reverse, that is, return to the state where the connection end 202 of the first drive arm 21 is connected to the drive plate 13 and the connection end 202 of the second drive arm 22 is disconnected from the drive plate 13 (not shown in the figure). When the backup power supply needs to be closed, the selection electromagnet 31 is energized again, the selection moving iron core 32 reverses, so that the first drive arm 32 becomes the non-working position and the second drive arm 22 becomes the working position, and so on. Figure 3f In this position, the main electromagnet 11 is energized, driving the second drive arm 22 to move from top to bottom. The drive surface 2011 on the second drive arm 22 drives the right first drive shaft II 41', causing the turntable 4 to rotate clockwise through a second angle in a second direction opposite to the first direction, thus moving the switch from the double-open position to the standby closed position. Figure 3g As shown. When the main electromagnet 11 is de-energized, it drives the second drive arm 22 to return from below to above, while the selection electromagnet 31 is de-energized, causing the selection slider 35 to move from left to right, returning to the state where the first drive arm 21 is in the working position and the second drive arm 22 is in the non-working position, as shown. Figure 3h As shown. Furthermore, if a backup closing to double-open position operation is required, the main electromagnet 11 is energized again, and the first drive arm 21 drives the left second drive shaft I 42 downwards, thereby driving the turntable 4 to rotate counterclockwise, as shown.Figure 3i As shown, the switch reaches the double-open position. Then, the main electromagnet 11 is de-energized and resets, as shown. Figure 3j As shown. In this embodiment, a tension spring is provided between the drive end 201 near the drive arm and the switch housing to ensure that the drive arm maintains its position when it is in a non-working position. A sliding groove is provided near the connection end 202 of the drive arm to ensure that the drive arm slides up and down with the moving iron core 12.

[0087] In summary, when the selection electromagnet 31 is in the first selection position, the first drive arm 21 is in the working position and the second drive arm 22 is in the non-working position. At this time, the main electromagnet 11, the first drive arm 21, and the turntable 4 form a transmission chain. When the selection electromagnet 31 is in the second selection position, the first drive arm 21 is in the non-working position and the second drive arm 22 is in the working position. At this time, the main electromagnet 11, the second drive arm 22, and the turntable 4 form a transmission chain. Both the first drive arm 21 and the second drive arm 22 include a drive end 201 and a connecting end 202. The working position is when the drive end 201 of any drive arm is in the drive position that cooperates with the turntable 4 and the connecting end 202 of the drive arm is connected to the main electromagnet 11. The non-working position is when the drive end 201 of any drive arm leaves the drive position that cooperates with the turntable 4 or when the connecting end 202 of the drive arm is disconnected from the main electromagnet 11.

Claims

1. An operating mechanism for a dual-power automatic transfer switch, characterized in that: The device includes a drive unit (1), a transmission unit (2), a selection unit (3), and a turntable (4). The transmission unit (2) includes a first drive arm (21) and a second drive arm (22) respectively disposed on both sides of the turntable (4). The selection unit (3) is used to transmit the action of the drive unit (1) from a first position to a second position to the turntable (4) by one of the first drive arm (21) and the second drive arm (22). When the action of the drive unit (1) from the first position to the second position is transmitted by the first drive arm (21), the turntable (4) rotates in a first direction. When the action of the drive unit (1) from the first position to the second position is transmitted by the second drive arm (22), the turntable (4) rotates in a second direction opposite to the first direction.

2. The operating mechanism of the dual-power automatic transfer switch according to claim 1, characterized in that: The driving device (1) includes a main electromagnet (11), which has a first position where the moving iron core (12) and the stationary iron core are released, and a second position where the moving iron core (12) and the stationary iron core are attracted. The straight line along the trajectory of the moving iron core (12) passes through the rotation center of the turntable (4). The selection device (3) includes a selection electromagnet (31), which includes a selection stationary iron core and a selection moving iron core (32). The direction of movement of the selection moving iron core (32) is perpendicular to the direction of movement of the moving iron core (12). The selection electromagnet (31) has a first position where the moving iron core (12) and the stationary iron core (12) are released, and a second position where the moving iron core (12) and the stationary iron core (12) are attracted. A first selection position and a second selection position; both the first drive arm (21) and the second drive arm (22) have working positions and non-working positions; in the first selection position, the first drive arm (21) is in the working position and the second drive arm (22) is in the non-working position, and the main electromagnet (11), the first drive arm (21) and the turntable (4) form a transmission chain; in the second selection position, the first drive arm (21) is in the non-working position and the second drive arm (22) is in the working position, and the main electromagnet (11), the second drive arm (22) and the turntable (4) form a transmission chain.

3. The operating mechanism of the dual-power automatic transfer switch according to claim 2, characterized in that: The first drive arm (21) and the second drive arm (22) have the same structure and are arranged in a mirror image relative to the turntable (4). Both include a drive end (201) and a connecting end (202). The working position of the drive arm is when the drive end (201) of either the first drive arm (21) or the second drive arm (22) is in a drive position that cooperates with the turntable (4) and the connecting end (202) of the drive arm is connected to the main electromagnet (11). The non-working position of the drive arm is when the drive end (201) of either the first drive arm (21) or the second drive arm (22) leaves the drive position that cooperates with the turntable (4) or the connecting end (202) of the drive arm is disconnected from the main electromagnet (11).

4. The operating mechanism of the dual-power automatic transfer switch according to claim 3, characterized in that: The driving device (1) further includes a driving plate (13), the middle part of which is fixed to the moving iron core (12), and the connecting end (202) of the first driving arm (21) and the connecting end (202) of the second driving arm (22) are respectively connected to the two ends of the driving plate (13).

5. The operating mechanism of the dual-power automatic transfer switch according to claim 4, characterized in that: The selection device (3) further includes a position holding mechanism (33) and an elastic reset mechanism (34). The elastic reset mechanism (34) is used to make the first drive arm (21) and the second drive arm (22) have a tendency to return to the working position when they leave the working position. When the main electromagnet (11) is in the first position, one of the drive arms of the first drive arm (21) and the second drive arm (22) is actuated by the selection electromagnet (31) to move from the working position to the non-working position. At the same time, the other drive arm of the first drive arm (21) and the second drive arm (22) is driven by the elastic reset mechanism (34) to return from the non-working position to the working position. During the movement of the main electromagnet (11) from the first position to the second position, the position holding mechanism (33) holds the first drive arm (21) and the second drive arm (22) in the above position.

6. The operating mechanism of the dual-power automatic transfer switch according to claim 5, characterized in that: The first drive arm (21) and the second drive arm (22) are hinged to both ends of the drive plate (13) via hinge shafts (2021) on their respective connecting ends (202). Both the first drive arm (21) and the second drive arm (22) are provided with limiting shafts (23). The position holding mechanism (33) includes a pair of n-shaped limiting grooves, which are arranged in a mirror image relative to the turntable (4). Each limiting groove includes an inner sliding groove (331), an outer sliding groove (333), and a top sliding groove (332) connecting the inner and outer sliding grooves. When either the first drive arm (21) or the second drive arm (22) is in the working position and moves with the moving iron core (12), the limiting shaft (23) is located inside the limiting groove. The movement occurs within the slide groove (331). When either the first drive arm (21) or the second drive arm (22) is actuated by the selected electromagnet (31) to move from the working position to the non-working position, the limiting shaft (23) of the drive arm moves from the end of the top slide groove (332) adjacent to the inner slide groove (331) to the end adjacent to the outer slide groove (333), so that the movement of the drive arm from the working position to the non-working position is a rotational movement centered on the hinge shaft (2021). When either the first drive arm (21) or the second drive arm (22) is in the non-working position and moves with the main electromagnet (11), the limiting shaft (23) moves within the outer slide groove (333) of the limiting groove.

7. The operating mechanism of the dual-power automatic transfer switch according to claim 5, characterized in that: Both ends of the drive plate (13) are provided with slide grooves (131) along the movement direction of the selected moving iron core (32). The first drive arm (21) and the second drive arm (22) are each provided with sliding shafts (2022) adapted to the slide grooves (131). The elastic reset mechanism (34) is set in the slide grooves (131). The switching process between the working position and the non-working position of the first drive arm (21) and the second drive arm (22) is a translational movement along the movement direction of the selected moving iron core (32). The position holding mechanism (33) includes a pair of sliding shafts (2022) along the movement direction of the moving iron core (131). 2) The limiting grooves extending in the direction of movement are arranged in a mirror image relative to the turntable (4). The first drive arm (21) and the second drive arm (22) are provided with a limiting shaft (23) on the side opposite to the selection electromagnet (31). When either the first drive arm (21) or the second drive arm (22) is in the working position, the limiting shaft (23) on the drive arm is located outside the limiting groove. When either the first drive arm (21) or the second drive arm (22) is in the non-working position and moves with the moving iron core (12), the limiting shaft (23) on it moves in the limiting groove.

8. The operating mechanism of the dual-power automatic transfer switch according to claim 3, characterized in that: The driving device (1) further includes a driving plate (13), which is fixed to the moving iron core (12). The selection device (3) further includes a selection slider (35) actuated by the selection moving iron core (32). When the selection electromagnet (31) moves between the first selection position and the second selection position, the selection moving iron core (32) drives the selection slider (35) to slide between position I and position II on the driving plate (13). Position I is the position where one end of the selection slider (35) is connected to the connecting end (202) of the first driving arm (21) and the other end of the selection slider (35) is disconnected from the connecting end (202) of the second driving arm (22). Position II is the position where one end of the selection slider (35) is disconnected from the connecting end (202) of the first driving arm (21) and the other end of the selection slider (35) is connected to the connecting end (202) of the second driving arm (22).

9. The operating mechanism of the dual-power automatic transfer switch according to claim 6 or 8, characterized in that: The turntable (4) is provided with a pair of mirror-arranged first drive shafts and a pair of mirror-arranged second drive shafts. The drive end (201) of the first drive arm (21) and the drive end (201) of the second drive arm (22) are both provided with a drive surface (2011) and a reset surface (2012). During the process of the moving iron core (12) moving from the first position to the second position for the first time, the drive arm in the working position pushes the second drive shaft on the same side through the drive surface (2011), so that the turntable (4) rotates through the first angle. During the process of the moving iron core (12) returning from the second position to the first position, the drive arm pushes the first drive shaft on the same side through the reset surface (2012). This causes the first drive shaft to move in a circular motion relative to the rotation center of the turntable (4) so ​​that the drive surface (2011) passes over the first drive shaft. During the process of the moving iron core (12) moving from the first position to the second position for the second time, the drive arm pushes the first drive shaft on the same side through the drive surface (2011), causing the turntable (4) to rotate at a second angle. When the turntable (4) rotates through the first angle, the dual power supply automatic transfer switch switches from one of the normal closing position and the standby closing position to the dual open position. When the turntable (4) rotates through the second angle, the dual power supply automatic transfer switch switches from the dual open position to the other of the normal closing position and the standby closing position.

10. The operating mechanism of the dual-power automatic transfer switch according to claim 7, characterized in that: The turntable (4) is provided with a pair of mirror-arranged first drive shafts and a pair of mirror-arranged second drive shafts. Both the drive end (201) of the first drive arm (21) and the drive end (201) of the second drive arm (22) are provided with a drive surface (2011) and a reset surface (2012). During the first movement of the moving iron core (12) from the first position to the second position, the drive arm in the working position pushes the second drive shaft on the same side through the drive surface (2011), causing the turntable (4) to rotate through a first angle. Then, during the process of the moving iron core (12) returning from the second position to the first position, the reset surface (2012) of the drive arm pushes the first drive shaft on the same side, and its sliding shaft (2022) presses against it. The pressure of the elastic reset mechanism (34) slides in the slide groove (131). The drive arm makes a translational movement away from the turntable (4) so ​​that the drive surface (2011) passes over the first drive shaft on the same side. During the process of the moving iron core (12) moving from the first position to the second position for the second time, the drive arm pushes the first drive shaft on the same side through the drive surface (2011) so that the turntable (4) rotates at a second angle. When the turntable (4) rotates through the first angle, the dual power supply automatic transfer switch switches from one of the normal closing position and the standby closing position to the dual open position. When the turntable (4) rotates through the second angle, the dual power supply automatic transfer switch switches from the dual open position to the other of the normal closing position and the standby closing position.

11. A dual-power automatic transfer switch, characterized in that: The device includes a first switch (5), a second switch (6), a transmission mechanism (7), and an operating mechanism for a dual-power automatic transfer switch as described in any one of claims 1 to 10. The first switch (5) and the second switch (6) are arranged side by side. The operating mechanism drives the first switch (5) to perform closing and opening actions through the transmission mechanism (7) to connect and disconnect the main power supply. The operating mechanism also drives the second switch (6) to perform closing and opening actions through the transmission mechanism (7) to connect and disconnect the backup power supply.

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