Mechanical interlocking type dual-power-supply switching device based on magnetic control mechanism and switching method of mechanical interlocking type dual-power-supply switching device

Abstract

The invention provides a mechanical interlocking type dual-power-supply switching device based on a magnetic control mechanism and a switching method thereof, and the device comprises a switch body which comprises a first switch static contact and a second switch static contact. One side of the first switch static contact and one side of the second switch static contact are respectively provided with a first switch moving contact and a second switch moving contact which are matched with the first switch static contact and the second switch static contact, the first switch moving contact and the second switch moving contact are respectively arranged on a first moving conductive rod and a second moving conductive rod, and the first moving conductive rod and the second moving conductive rod are respectively connected with the interior of the switch body in a rotating mode. The first movable conducting rod is connected with the first magnetic control switch, and the second movable conducting rod is connected with the second magnetic control switch. A first mechanical interlocking rod or a second mechanical interlocking rod is arranged in the switch body. According to the application, the possibility that the switch static contact I and the switch moving contact I as well as the switch static contact II and the switch moving contact II are switched on simultaneously is completely eradicated, so that the accident of power supply loop closing is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of dual power switching, and in particular to a mechanical interlocking dual power switching device based on a magnetic control mechanism and a switching method thereof. Background Art

[0002] A dual power switching device is an electrical device that can automatically switch to a backup power supply when the main power supply fails or is abnormal to ensure the continuity of power supply. It is widely used in places with high requirements for power supply reliability. In recent years, magnetic switches have received more and more attention and application in distribution networks due to their rapidity and low power consumption, and have also attracted the attention of low-voltage plastic shell applications, especially low-voltage dual power switching products. In order to prevent short-circuit failures caused by the closing of the dual incoming power supply, dual power products must have an interlocking function. The interlocking function is usually achieved through electrical interlocking, software interlocking or mechanical interlocking. Among them, mechanical interlocking has the highest stability because it is mainly achieved through a pure mechanical structure. It is not easily affected by electromagnetic interference, voltage fluctuations, software failures and other factors. Once the mechanical components are installed and debugged and are in normal condition, the stability and reliability of its interlocking function are very high, which can effectively prevent misoperation and accidents. However, in the prior art, among various types of dual power supplies, only CB-level ATS is equipped with mechanical interlocking, but its action speed is too slow and can only be used in low-end occasions. After a detailed search, the applicant did not find an interlocking dual power switching device with a faster action speed.

[0003] In summary, it is necessary to provide a technical solution with fast response speed and high stability. Summary of the invention

[0004] The present application provides a mechanical interlocking dual power switching device based on a magnetic control mechanism, comprising a switch body, wherein the switch body comprises a switch static contact 1 and a switch static contact 2, wherein one side of the switch static contact 1 and the switch static contact 2 are respectively provided with a switch moving contact 1 and a switch moving contact 2 cooperating therewith, wherein the switch moving contact 1 and the switch moving contact 2 are respectively provided on a moving conductive rod 1 and a moving conductive rod 2, wherein the moving conductive rod 1 and the moving conductive rod 2 are respectively provided with a moving conductive rod 1 and a moving conductive rod 2, wherein the moving conductive rod 1 and the moving conductive rod 2 are rotatably connected to the inside of the switch body, wherein the moving conductive rod 1 is connected to a magnetic control switch 1, and the moving conductive rod 2 is connected to a magnetic control switch 2; wherein a mechanical interlocking rod 1 or a mechanical interlocking rod 2 is provided in the switch body, wherein two ends of the mechanical interlocking rod 1 are respectively in contact with the moving conductive rod 1 and the moving conductive rod 2, and two ends of the mechanical interlocking rod 2 are respectively in contact with the magnetic control switch 1 and the magnetic control switch 2.

[0005] As a preferred solution, the switch body includes a first switch body and a second switch body, and the backs of the first switch body and the second switch body are connected; the first switch body includes a first static switch contact and a first moving switch contact, the second switch body includes a second static switch contact and a second moving switch contact, a first moving conducting rod and a second moving conducting rod are respectively rotatably connected to the interiors of the first switch body and the second switch body, and a first mechanical interlocking rod or a second mechanical interlocking rod is arranged between the first switch body and the second switch body.

[0006] As a preferred solution, the length of the first mechanical interlocking rod is L, where Lmin < L < Lmed. Here, the contact point between the first moving conducting rod and the first mechanical interlocking rod is A, and the contact point between the second moving conducting rod and the first mechanical interlocking rod is B. When the first static switch contact and the first moving switch contact are closed, and the second static switch contact and the second moving switch contact are closed, the distance between A and B is Lmin; when the first static switch contact and the first moving switch contact are closed, the second static switch contact and the second moving switch contact are open, or when the first static switch contact and the first moving switch contact are open, and the second static switch contact and the second moving switch contact are closed, the distance between A and B is Lmed.

[0007] As a preferred solution, the length of the second mechanical interlocking rod is L1, where Lmin + Lc < L1 < Lmed. Here, the point where the first magnetic control switch contacts one end of the second mechanical interlocking rod is C, and the point where the second magnetic control switch contacts one end of the second mechanical interlocking rod is D. When the first static switch contact and the first moving switch contact are closed, and the second static switch contact and the second static switch contact are closed, the distance between C and D is Lmin; when the first static switch contact and the first moving switch contact are closed, the second static switch contact and the second moving switch contact are open, or when the first static switch contact and the first moving switch contact are open, and the second static switch contact and the second moving switch contact are closed, the distance between C and D is Lmed; the overtravel of the first switch body and the second switch body is Lc.

[0008] As a preferred solution, push plates that contact the second mechanical interlocking rod are arranged on both the first magnetic control switch and the second magnetic control switch. The point where the push plate of the first magnetic control switch contacts one end of the second mechanical interlocking rod is C, and the point where the push plate of the second magnetic control switch contacts one end of the second mechanical interlocking rod is D.

[0009] As a preferred solution, the first magnetic control switch includes a first housing. Inside the first housing, there is a first static iron core. A first moving iron core that cooperates with the first static iron core is arranged below the first static iron core. An installation hole is arranged in the middle of the first static iron core and the first moving iron core. A first connecting rod is arranged in the installation hole. The first connecting rod is connected to the first moving conducting rod. A fixing groove is arranged outside the installation hole. A first opening spring is arranged in the fixing groove. The first opening spring is sleeved outside the first connecting rod. The first connecting rod is connected to the first moving iron core through a fixing device. A first coil is fixed inside the first static iron core. An adsorption groove that cooperates with the first static iron core is arranged inside the first moving iron core; both the first static iron core and the first moving iron core are made of semi-hard magnetic materials.

[0010] As a preferred solution, the magnetic control switch two includes a housing two. Inside the housing two, there is a static iron core two. At the lower part of the static iron core two, there is a moving iron core two that cooperates with it. In the middle of the static iron core two and the moving iron core two, there is an installation hole two. Inside the installation hole two, there is a connecting rod two. The connecting rod two is connected to the moving conducting rod two. Outside the installation hole two, there is a fixing groove two. Inside the fixing groove two, there is a tripping spring two. The tripping spring two is sleeved outside the connecting rod two. The connecting rod two is connected to the moving iron core two through a fixing device. Inside the static iron core two, there is a fixed coil two. Inside the moving iron core two, there is an adsorption groove two that cooperates with the static iron core two. Both the static iron core two and the moving iron core two are made of semi-hard magnetic materials.

[0011] A mechanical interlocking type dual-power switching method based on a magnetic control mechanism includes the following steps: The magnetic control switch one is excited to drive the moving conducting rod one to act, so that the switch moving contact one and the switch static contact one are closed. At this time, the switch moving contact two and the switch static contact two are open. If the switch moving contact two and the switch static contact two are closed at this time, the closing impulse will drive the mechanical interlocking rod one or the mechanical interlocking rod two to push open the switch moving contact one, thus completing the mechanical interlocking during closing. Or the magnetic control switch two is excited to drive the moving conducting rod two to act, so that the switch moving contact two and the switch static contact two are closed. At this time, the switch moving contact one and the switch static contact one are open. If the switch moving contact one and the switch static contact one are closed at this time, the closing impulse will drive the mechanical interlocking rod one or the mechanical interlocking rod two to push open the switch moving contact two, thus completing the mechanical interlocking during closing.

[0012] As a preferred solution, the length of the mechanical interlocking rod one is L, where Lmin < L < Lmed. Among them, the contact point between the moving conducting rod one and the mechanical interlocking rod one is A, and the contact point between the moving conducting rod two and the mechanical interlocking rod one is B. When the switch static contact one, the switch moving contact one are closed, and the switch static contact two, the switch moving contact two are closed, the distance between A and B is Lmin. When the switch static contact one, the switch moving contact one are closed, the switch static contact two, the switch moving contact two are open, or the switch static contact one, the switch moving contact one are open, and the switch static contact two, the switch moving contact two are closed, the distance between A and B is Lmed.

[0013] As a preferred solution, the length of the mechanical interlocking rod two is L1, where Lmin + Lc < L1 < Lmed. Here, the point where the first magnetic control switch contacts one end of the mechanical interlocking rod two is C, and the point where the second magnetic control switch contacts one end of the mechanical interlocking rod two is D. When the first static switch contact and the first moving switch contact are closed, and the second static switch contact and the second moving switch contact are closed, the distance between C and D is Lmin. When the first static switch contact and the first moving switch contact are closed, the second static switch contact and the second moving switch contact are open, or when the first static switch contact and the first moving switch contact are open, and the second static switch contact and the second moving switch contact are closed, the distance between C and D is Lmed; the over-travel of the first switch body and the second switch body is Lc.

[0014] In summary, for the mechanical interlocking type dual-power switching device of the present application, only one mechanical interlocking rod is required, without levers or gears, which is simple and wear-resistant. The present application has three states. The first state is: the first static switch contact and the first moving switch contact are open, and the second static switch contact and the second moving switch contact are open; the second state is: the first static switch contact and the first moving switch contact are open, and the second static switch contact and the second moving switch contact are closed; the third state is: the first static switch contact and the first moving switch contact are closed, and the second static switch contact and the second moving switch contact are open; completely eliminating the possibility that the first static switch contact and the first moving switch contact are closed, and the second static switch contact and the second moving switch contact are also closed, thus avoiding the accident of power loop closure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the first embodiment of the present application; Figure 2 is a schematic structural diagram of the second embodiment of the present application; Figure 3 is a schematic structural diagram of the first magnetic control switch being closed in the present application; Figure 4 is a schematic structural diagram of the second magnetic control switch being closed in the present application; REFERENCE NUMERALS: 1. First switch body; 2. Second switch body; 3. Center line; 4. First static switch contact; 5. Second static switch contact; 6. Second moving switch contact; 7. First moving conductive rod; 8. Second moving conductive rod; 9. Fixed bracket; 10. First magnetic control switch; 11. Second magnetic control switch; 12. First mechanical interlocking rod; 13. Second mechanical interlocking rod; 14. Push plate; 15. First housing; 16. First static iron core; 17. First moving iron core; 18. First mounting hole; 19. First connecting rod; 20. First fixed groove; 21. First opening spring; 22. Snap ring; 23. First coil; 24. First adsorption groove; 25. Locking nut; 26. Second housing; 27. Second static iron core; 28. Second moving iron core; 29. Second mounting hole; 30. Second connecting rod; 31. Second fixed groove; 32. Second opening spring; 33. Second snap ring; 34. Second locking nut; 35. Second coil; 36. Second adsorption groove. DETAILED DESCRIPTION

[0016] The following is combined with Figure 1 To Attachment Figure 4 The specific implementation of the present invention is described in detail. It should be noted that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "connected", "connected" and "provided with" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1

[0019] This embodiment provides a mechanical interlocking dual power switching device based on a magnetic control mechanism, including a switch body. The switch body can be an integral structure or can be composed of two switch bodies. This embodiment takes two switch bodies as an example. Specifically: The switch body includes a switch body 1 and a switch body 2. The switch body 1 and the switch body 2 have the same structure and adopt the molded case switch in the prior art. The switch body 1 and the switch body 2 are placed back to back and connected. Figure 1 The center line 3 shown in the figure represents the back plane of the switch body 1 and the switch body 2, and a left-right symmetrical distribution is formed with the center line 3 as a reference. Therefore, when the present application is used in practice, it is no longer a back-mounted cabinet type, but requires a crossbeam to be designed in the middle of the cabinet to fix the present application on the crossbeam and other structures.

[0020] The switch body 1 includes a stationary switch contact 1-4. The switch body 2 includes a stationary switch contact 2-5. On one side of the stationary switch contact 1-4 and the stationary switch contact 2-5, there are respectively arranged a movable switch contact 1 and a movable switch contact 2-6 that cooperate with them. When the stationary switch contact 1-4 contacts the movable switch contact 1, the switch body 1 is closed. When the stationary switch contact 1-4 separates from the movable switch contact 1, the switch body 1 is opened. When the stationary switch contact 2-5 contacts the movable switch contact 2-6, the switch body 2 is closed. When the stationary switch contact 2-5 separates from the movable switch contact 2-6, the switch body 2 is opened. The movable switch contact 1 and the movable switch contact 2-6 are respectively arranged on a movable conducting rod 1-7 and a movable conducting rod 2-8, and are fixed by means such as bonding and welding. The movable conducting rod 1-7 and the movable conducting rod 2-8 drive the movable switch contact 1 and the movable switch contact 2-6 to act respectively, thereby realizing the opening or closing of the switch body 1 and the switch body 2.

[0021] The movable conducting rod 1-7 and the movable conducting rod 2-8 are respectively rotatably connected to a fixing frame 9 inside the switch body 1 and the switch body 2. The movable conducting rod 1-7 is connected to a magnetic control switch 1-10, and the magnetic control switch 1-10 is installed outside the switch body 1. The movable conducting rod 2-8 is connected to a magnetic control switch 2-11, and the magnetic control switch 2-11 is installed outside the switch body 2. A mechanical interlocking rod 1-12 is arranged between the switch body 1 and the switch body 2. Both ends of the mechanical interlocking rod 1-12 are used to contact the movable conducting rod 1-7 and the movable conducting rod 2-8. The mechanical interlocking rod 1-12 adopts a penetrating design and penetrates between the fixing frames 9 inside the switch body 1 and the switch body 2. The mechanical interlocking rod 1-12 can move along the fixing frame 9, and both ends are used to contact the movable conducting rod 1-7 and the movable conducting rod 2-8. The setting of the mechanical interlocking rod 1-12 ensures that only the switch body 1 or the switch body 2 can be closed, or neither the switch body 1 nor the switch body 2 is closed, but the situation where the switch body 1 and the switch body 2 are closed simultaneously will not occur.

[0022] The specific length of the mechanical interlocking rod 1-12 is L, where Lmin < L < Lmed. Among them, the point where the movable conducting rod 1-7 can contact the mechanical interlocking rod 1-12 is A, and the point where the movable conducting rod 2-8 can contact the mechanical interlocking rod 1-12 is B. When the stationary switch contact 1-4 and the movable switch contact 1 are closed, and the stationary switch contact 2-5 and the movable switch contact 2-6 are closed, the distance between A and B is Lmin. When the stationary switch contact 1-4 and the movable switch contact 1 are closed, the stationary switch contact 2-5 and the movable switch contact 2-6 are opened, or when the stationary switch contact 1-4 and the movable switch contact 1 are opened, and the stationary switch contact 2-5 and the movable switch contact 2-6 are closed, the distance between A and B is Lmed.

[0023] The working principle of this embodiment is as follows: the magnetically controlled switch 10 is excited to drive the moving conductive rod 7 to move, so that the switch moving contact 1 and the switch static contact 4 are closed. When the switch moving contact 1 and the switch static contact 4 are closed, the point A of the moving conductive rod 7 contacts one end of the mechanical interlocking rod 12. At this time, the switch moving contact 2 6 and the switch static contact 2 5 are opened. When it is necessary to replace the switch body 2, the driving control circuit board sends a demagnetization command to the magnetically controlled switch 10 and sends an excitation command to the magnetically controlled switch 2 11. Under normal circumstances, the switch moving contact 1 should be closed. The switch head 26 and the switch static contact 25 are closed, and the switch moving contact 1 and the switch static contact 14 are opened. However, if the magnetically controlled switch 10 fails to be demagnetized, a double closing situation may occur in the prior art. In the present application, when the switch moving contact 1 and the switch static contact 14 are still in the closed state and the switch moving contact 26 and the switch static contact 25 are also closed, the point B of the moving conductive rod 28 contacts one end of the mechanical interlocking rod 12, and the closing impulse will drive the mechanical interlocking rod 12 to push open the switch moving contact 1, thereby completing the mechanical interlocking of the closing.

[0024] Or the magnetically controlled switch 211 is excited to drive the moving conductive rod 28 to move, so that the switch moving contact 26 and the switch static contact 25 are closed. When the switch moving contact 26 and the switch static contact 25 are closed, the point B of the moving conductive rod 28 contacts one end of the mechanical interlocking rod 12. At this time, the switch moving contact 1 and the switch static contact 14 are opened. When it is necessary to replace the switch body 1, the drive control circuit board sends a demagnetization command to the magnetic control switch 11 and an excitation command to the magnetic control switch 10. Under normal circumstances, the switch moving contact 1 and the switch static contact 4 should be closed, and the switch moving contact 2 6 and the switch static contact 2 5 should be opened. However, if the magnetic control switch 11 fails to be demagnetized, a double closing situation may occur in the prior art. In the present application, when the switch moving contact 2 6 and the switch static contact 2 5 are still in the closed state and the switch moving contact 1 and the switch static contact 4 are also closed, point A of the moving conductive rod 7 contacts one end of the mechanical interlocking rod 12, and the closing impulse will drive the mechanical interlocking rod 12 to open the switch moving contact 2 6, thereby completing the mechanical interlocking of the closing. Embodiment 2

[0025] This embodiment is different from the first embodiment in that the installation position of the mechanical interlocking rod in this embodiment is different, specifically: A mechanical interlocking rod two 13 is arranged between the switch body one 1 and the switch body two 2. The mechanical interlocking rod two 13 adopts a penetrating design and penetrates between the fixing frames 9 inside the switch body one 1 and the switch body two 2, and contacts the magnetic control switch one 10 and the magnetic control switch two 11 at both ends respectively. More specifically, push plates 14 that contact the mechanical interlocking rod two 13 are arranged on both the magnetic control switch one 10 and the magnetic control switch two 11; the setting of the mechanical interlocking rod two 13 ensures that only the switch body one 1 or the switch body two 2 can be closed, or both the switch body one 1 and the switch body two 2 are not closed, but the situation where the switch body one 1 and the switch body two 2 are closed simultaneously will not occur.

[0026] The length of the mechanical interlocking rod two 13 is L1, and Lmin + Lc < L1 < Lmed. Wherein, the point where the push plate 14 of the magnetic control switch one 10 contacts one end of the mechanical interlocking rod two 13 is C, and the point where the push plate 14 of the magnetic control switch two 11 contacts one end of the mechanical interlocking rod two 13 is D. When the switch static contact one 4 and the switch moving contact one are closed, and the switch static contact two 5 and the switch moving contact two 6 are closed, the distance between C and D is Lmin. When the switch static contact one 4 and the switch moving contact one are closed, the switch static contact two 5 and the switch moving contact two 6 are open; or when the switch static contact one 4 and the switch moving contact one are open, and the switch static contact two 5 and the switch moving contact two 6 are closed, the distance between C and D is Lmed; the overtravel of the switch body one 1 or the switch body two 2 is Lc.

[0027] The working principle of this embodiment is as follows: The magnetic control switch one 10 is excited to drive the moving conducting rod one 7 to act, so that the switch moving contact one is closed with the switch static contact one 4. When the switch moving contact one is closed with the switch static contact one 4, the C point of the push plate 14 of the magnetic control switch one 10 contacts one end of the mechanical interlocking rod two 13. At this time, the switch moving contact two 6 is open with the switch static contact two 5; when it is necessary to switch to the switch body 2, the drive control circuit board sends a demagnetization instruction to the magnetic control switch one 10 and an excitation instruction to the magnetic control switch two 11. Normally, the switch moving contact two 6 should be closed with the switch static contact two 5, and the switch moving contact one should be open with the switch static contact one 4. However, if the magnetic control switch one 10 fails to demagnetize, a double-closed situation may occur in the prior art. In this application, when the switch moving contact one is still closed with the switch static contact one 4 and the switch moving contact two 6 is also closed with the switch static contact two 5, the D point of the push plate 14 of the magnetic control switch one 10 contacts the other end of the mechanical interlocking rod two 13, and the closing impulse will drive the mechanical interlocking rod two 13 to move towards the direction of the magnetic control switch one 10, pushing open the switch moving contact one, thereby completing the mechanical interlocking of closing. Or the magnetic control switch 11 is excited, driving the moving conductive rod 28 to move, so that the switch moving contact 26 and the switch static contact 25 are closed. When the switch moving contact 26 and the switch static contact 25 are closed, the D point on the push plate 14 of the magnetic control switch 11 contacts one end of the mechanical interlocking rod 213. At this time, the switch moving contact 1 and the switch static contact 14 are opened. When it is necessary to replace the switch body 1, the drive control circuit board sends a demagnetization command to the magnetic control switch 11 and sends an excitation command to the magnetic control switch 10. Under normal circumstances, the switch moving contact 1 and the switch static contact 14 should be closed, and the switch moving contact 1 should be closed. The head 26 and the switch static contact 25 are disconnected, but if the magnetic control switch 211 fails to be demagnetized, a double closing situation may occur in the prior art. In the present application, when the switch moving contact 26 and the switch static contact 25 are still in the closed state, and the switch moving contact 1 and the switch static contact 14 are also closed, the C point of the push plate 14 of the magnetic control switch 10 contacts one end of the mechanical interlocking rod 213, pushing the mechanical interlocking rod 213 to move toward the direction close to the magnetic control switch 211, and the closing impulse will drive the mechanical interlocking rod 213 to open the switch moving contact 26, thereby completing the mechanical interlocking of the closing. Embodiment 3

[0028] This embodiment describes the structure of the magnetic control switch 10 and the magnetic control switch 2 11. The structures of the two are the same. The different descriptions are for distinguishing the connection positions of the two. The magnetic control switch 10 and the magnetic control switch 2 11 are connected to the drive control circuit board, etc. The drive control circuit board provides excitation and demagnetization of the magnetic control switch 10 and the magnetic control switch 2 11. The drive control circuit board can be a drive control circuit board in the prior art. This application does not modify it, and the specific model is not limited. Specifically: The magnetic control switch 10 can be cylindrical as a whole; the magnetic control switch 10 includes a shell 15, which is used to connect the magnetic control switch 10 as a whole with the switch body 1, and is connected by screws or the like. A static iron core 16 is arranged in the shell 15, and a moving iron core 17 matched with the static iron core 16 is arranged at the lower part of the static iron core 16, and a mounting hole 18 is arranged in the middle of the static iron core 16 and the moving iron core 17, and a connecting rod 1 is arranged in the mounting hole 18. 19, the connecting rod 19 is connected to the moving conductive rod 7, the connecting rod 19 moves along the mounting hole 18 of the static iron core 16, more specifically, when the magnetic switch 10 is excited, the moving iron core 17 moves toward the direction close to the static iron core 16, thereby driving the connecting rod 19 to move; the outer side of the mounting hole 18 is provided with a fixing groove 20, and the fixing groove 20 is provided with a disconnecting spring 21, and the disconnecting spring 21 is sleeved on the outer side of the connecting rod 19, more specifically The opening spring 21 is fixed inside the static iron core 16, that is, it is fixed on the connecting rod 19 inside the static iron core 16 through the retaining ring 22, and the two ends of the opening spring 21 support the upper and lower parts of the fixing groove 20 to ensure that there is a certain pre-pressure even in the opening state; the connecting rod 19 is connected to the moving iron core 17 through a fixing device, and the fixing device can adopt a locking nut 25, and the locking nut 25 is arranged at the lower part of the moving iron core 17, and the locking nut 25 is connected to the connecting rod 19, and the connecting rod 19 is provided with an external thread matched with the locking nut 25, and other forms can also be adopted, which will not be described here, and the technical personnel can choose; a coil 23 is fixed inside the static iron core 16, and an adsorption groove 24 matched with the coil 23 is provided inside the moving iron core 17; the static iron core 16 and the moving iron core 17 are both made of semi-hard magnetic material; the coil 23 is connected to the drive control circuit board.

[0029] When closing the switch: under the action of the excitation current, the moving iron core 17 overcomes the elastic force of the opening spring 21 and moves toward the direction close to the static iron core 16, so that the magnetically controlled switch 10 is in the closing state; that is, the suction force formed between the static iron core 16 and the moving iron core 17 completes the adsorption of the moving iron core 17 and the static iron core 16 through the suction force, thereby realizing the closing state; when opening the switch, after demagnetization, the magnetic force of the moving iron core 17 is weakened, and due to the elastic force of the opening spring 21 and other reasons, the moving iron core 17 moves in the direction away from the static iron core 16, so that the magnetically controlled switch 10 is in the opening state; that is, the suction force between the static iron core 16 and the moving iron core 17 is weakened, and due to the push of the opening spring 21 and other reasons, the moving iron core 17 and the static iron core 16 are separated, thereby realizing the opening state.

[0030] The magnetically controlled switch 11 can be cylindrical as a whole; the magnetically controlled switch 11 includes a shell 26, a static iron core 27 is arranged in the shell 26, a movable iron core 28 is arranged at the lower part of the static iron core 27, and a mounting hole 29 is arranged in the middle of the static iron core 27 and the movable iron core 28, a connecting rod 2 30 is arranged in the mounting hole 29, and the connecting rod 2 30 is connected to the movable conductive rod 28, and the connecting rod 2 30 moves along the mounting hole 29 of the static iron core 27, more specifically, when the magnetically controlled switch 11 is excited, the movable iron core 28 moves toward the direction close to the static iron core 27, thereby driving the connecting rod 2 30 to move; a fixing groove 2 31 is arranged on the outer side of the mounting hole 29, and a gate-opening spring 2 32 is arranged in the fixing groove 31, and the gate-opening spring 2 32 is sleeved on the outer side of the connecting rod 2 30, more specifically: the gate-opening spring 2 32 is fixed inside the static iron core 27, That is, it is fixed to the connecting rod 230 inside the static iron core 27 through the retaining ring 233, and the two ends of the opening spring 232 bear against the upper and lower parts of the fixing groove 231 to ensure that a certain pre-pressure is provided even in the opening state; the connecting rod 230 is connected to the moving iron core 28 through a fixing device, and the fixing device can adopt a locking nut 234, and the locking nut 234 is arranged at the lower part of the moving iron core 28, and the locking nut 234 is connected to the connecting rod 19, and the connecting rod 19 is provided with an external thread matching the locking nut 234, and other forms can also be adopted, which will not be elaborated here, and the technical personnel can choose; a coil 235 is fixed inside the static iron core 27, and an adsorption groove 236 matching the coil 235 is provided inside the moving iron core 23; the static iron core 23 and the moving iron core 23 are both made of semi-hard magnetic material; the coil 235 is connected to the drive control circuit board.

[0031] When closing the switch: under the action of the excitation current, the moving iron core 28 overcomes the elastic force of the opening spring 232 and moves toward the direction close to the static iron core 27, so that the magnetically controlled switch 11 is in the closed state; that is, the suction force formed between the static iron core 27 and the moving iron core 28 completes the adsorption of the moving iron core 28 and the static iron core 27 through the suction force, thereby realizing the closed state; when opening the switch, after the moving iron core 28 is demagnetized, the magnetic force weakens, and based on the elastic force of the opening spring 232 and other reasons, it moves in the direction away from the static iron core 27, so that the magnetically controlled switch 11 is in the opening state; that is, the suction force between the static iron core 27 and the moving iron core 28 weakens, and based on the push of the opening spring 232 and other reasons, the moving iron core 28 and the static iron core 27 are separated, thereby realizing the opening state. Embodiment 4

[0032] A mechanical interlocking dual power switching method based on a magnetic control mechanism comprises the following steps: The magnetically controlled switch 10 is excited to drive the moving conductive rod 7 to move, so that the switch moving contact 1 and the switch static contact 4 are closed; at this time, the switch moving contact 2 6 and the switch static contact 2 5 are opened; if the switch moving contact 2 6 and the switch static contact 2 5 are closed at this time, the closing impulse will drive the mechanical interlocking rod 12 or the mechanical interlocking rod 2 13 to open the switch moving contact 1, thereby completing the mechanical interlocking of the closing; more specifically: under the action of the excitation current, the moving iron core 17 overcomes the elastic force of the opening spring 21 and moves toward the direction close to the static iron core 16, so that the magnetically controlled switch 10 is in the closed state, and the connecting rod 19 pushes the moving conductive rod 7 to rotate along the inside of the switch body 1, so that the switch moving contact 1 and the switch static contact 4 are closed; at this time, the switch moving contact 2 6 and disconnected from the switch static contact 25; when a problem occurs with the switch body 1 and the switch body 22 needs to be replaced, the drive control circuit board sends a demagnetization command to the magnetically controlled switch 10 and an excitation command to the magnetically controlled switch 11. Under normal circumstances, the switch moving contact 26 and the switch static contact 25 should be closed, and the switch moving contact 1 and the switch static contact 14 should be disconnected. However, if the magnetically controlled switch 10 fails to be demagnetized, a double closing situation may occur in the prior art. In the present application, when the switch moving contact 1 and the switch static contact 14 are still in the closed state and the switch moving contact 26 and the switch static contact 25 are also closed, the closing impulse will drive the mechanical interlocking rod 12 or the mechanical interlocking rod 213 to open the switch moving contact 1, thereby completing the mechanical interlocking of the closing.

[0033] Or the magneto - controlled switch two 11 is excited, driving the moving conductive rod two 8 to act, causing the moving switch contact two 6 to close with the static switch contact two 5; at this time, the moving switch contact one and the static switch contact one 4 are opened; if the moving switch contact one and the static switch contact one 4 are closed at this time, the closing impulse will drive the mechanical interlocking rod one 12 or the mechanical interlocking rod two 13 to push open the moving switch contact two 6, thus completing the mechanical interlocking during closing; more specifically: the moving iron core two 28 moves towards the direction close to the static iron core two 27 under the action of the exciting current, overcoming the elastic force of the opening spring two 32, making the magneto - controlled switch two 11 in the closing state, and the connecting rod two 30 drives the conductive rod two 8 to rotate inside the switch body two 2, causing the moving switch contact two 6 to close with the static switch contact two 5; at this time, the moving switch contact one and the static switch contact one 4 are opened; when there is a problem with the switch body two 2 and the switch body one 1 needs to be replaced, the drive control circuit board sends a demagnetization command to the magneto - controlled switch two 11 and an exciting command to the magneto - controlled switch one 10. Normally, the moving switch contact one should close with the static switch contact one 4, and the moving switch contact two 6 should open with the static switch contact two 5. However, if the magneto - controlled switch two 11 fails to demagnetize, in the prior art, a double - closed situation may occur. In this application, when the moving switch contact two 6 and the static switch contact two 5 are still in the closed state and the moving switch contact one and the static switch contact one 4 are also closed, the closing impulse will drive the mechanical interlocking rod one 12 or the mechanical interlocking rod two 13 to push open the moving switch contact two 6, thus completing the mechanical interlocking during closing.

[0034] In order to ensure that the switch body one 1 and the switch body two 2 cannot be closed simultaneously, the lengths of the mechanical interlocking rod one 12 and the mechanical interlocking rod two 13 need to meet certain conditions. Specifically: The length of the mechanical interlocking rod one 12 is L, where Lmin < L < Lmed. Here, the contact point between the moving conductive rod one 7 and the mechanical interlocking rod one 12 is A, and the contact point between the moving conductive rod two 8 and the mechanical interlocking rod one 12 is B. When the static switch contact one 4 and the moving switch contact one are closed, and the static switch contact two 5 and the moving switch contact two 6 are closed, the distance between A and B is Lmin. When the static switch contact one 4 and the moving switch contact one are closed, the static switch contact two 5 and the moving switch contact two 6 are open, or when the static switch contact one 4 and the moving switch contact one are open, and the static switch contact two 5 and the moving switch contact two 6 are closed, the distance between A and B is Lmed.

[0035] The length of the mechanical interlocking rod two 13 is L1, where Lmin + Lc < L1 < Lmed. Here, the point where the push plate 14 of the magnetic control switch one 10 can contact the mechanical interlocking rod two 13 is C, and the point where the push plate 14 of the magnetic control switch two 11 can contact the mechanical interlocking rod two 13 is D. When the static switch contact one 4 and the moving switch contact one are closed, and the static switch contact two 5 and the moving switch contact two 6 are closed, the distance between C and D is Lmin. When the static switch contact one 4 and the moving switch contact one are closed, the static switch contact two 5 and the moving switch contact two 6 are open, or when the static switch contact one 4 and the moving switch contact one are open, and the static switch contact two 5 and the moving switch contact two 6 are closed, the distance between C and D is Lmed; the over-travel of the switch body one 1 and the switch body two 2 is Lc.

[0036] In summary, for the mechanical interlocking type dual-power switching device of the present application, only one mechanical interlocking rod is required, without levers or gears, which is simple and wear-resistant. The present application has three states. The first state is that the static switch contact one and the moving switch contact one are open, and the static switch contact two and the moving switch contact two are open; the second state is that the static switch contact one and the moving switch contact one are open, and the static switch contact two and the moving switch contact two are closed; the third state is that the static switch contact one and the moving switch contact one are closed, and the static switch contact two and the moving switch contact two are open; it completely eliminates the possibility that the static switch contact one and the moving switch contact one are closed, and the static switch contact two and the moving switch contact two are also closed, thus avoiding the accident of power loop closure; the invention adopts an integrated design, and the two switch bodies are uniformly operated and controlled.

[0037] In the description of the present invention provided in the specification, a large number of specific details are described; however, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0038] Similarly, it should be understood that in order to streamline this disclosure and assist in understanding one or more of the various inventive aspects, in the above description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof; however, the disclosed method should not be construed as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, the inventive aspects lie in less than all the features of the single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into the detailed description, where each claim stands on its own as a separate embodiment of the present invention.

[0039] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0040] It should be noted that the above embodiments illustrate the present invention rather than limit the present invention, and those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation to the claims.

[0041] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

[0042] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0043] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations of this application will not be described separately.

[0044] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A mechanical interlocking dual power switching device based on a magnetic control mechanism, characterized in that: It includes a switch body, and the switch body includes a first static switch contact (4) and a second static switch contact (5). On one side of the first static switch contact (4) and the second static switch contact (5), there are respectively arranged a first movable switch contact and a second movable switch contact (6) that cooperate with them. The first movable switch contact and the second movable switch contact (6) are respectively arranged on a first movable conducting rod (7) and a second movable conducting rod (8). The first movable conducting rod (7) and the second movable conducting rod (8) are rotatably connected to the inside of the switch body. The first movable conducting rod (7) is connected to a first magnetically controlled switch (10), and the second movable conducting rod (8) is connected to a second magnetically controlled switch (11). Inside the switch body, there is a first mechanical interlocking rod (12) or a second mechanical interlocking rod (13). Among them, both ends of the first mechanical interlocking rod (12) are in contact with the first movable conducting rod (7) and the second movable conducting rod (8) respectively, and both ends of the second mechanical interlocking rod (13) are in contact with the first magnetically controlled switch (10) and the second magnetically controlled switch (11) respectively.

2. A mechanical interlocking dual power switching device based on a magnetic control mechanism according to claim 1, characterized in that: The switch body includes a first switch body (1) and a second switch body (2), and the backs of the first switch body (1) and the second switch body (2) are connected. The first switch body (1) includes a first static switch contact (4) and a first movable switch contact, and the second switch body (2) includes a second static switch contact (5) and a second movable switch contact (6). The first movable conducting rod (7) and the second movable conducting rod (8) are respectively rotatably connected to the inside of the first switch body (1) and the second switch body (2). There is a first mechanical interlocking rod (12) or a second mechanical interlocking rod (13) arranged between the first switch body (1) and the second switch body (2).

3. The mechanical interlocking dual power switching device based on a magnetic control mechanism according to claim 1, characterized in that: The length of the first mechanical interlocking rod (12) is L, where Lmin < L < Lmed. Among them, the contact point between the first movable conducting rod (7) and the first mechanical interlocking rod (12) is A, and the contact point between the second movable conducting rod (8) and the first mechanical interlocking rod (12) is B. When the first static switch contact (4) and the first movable switch contact are closed, and the second static switch contact (5) and the second movable switch contact (6) are closed, the distance between A and B is Lmin; when the first static switch contact (4) and the first movable switch contact are closed, the second static switch contact (5) and the second movable switch contact (6) are open, or when the first static switch contact (4) and the first movable switch contact are open, and the second static switch contact (5) and the second movable switch contact (6) are closed, the distance between A and B is Lmed.

4. The mechanical interlocking dual power switching device based on a magnetic control mechanism according to claim 1, characterized in that: The length of the mechanical interlocking rod two (13) is L1, where Lmin + Lc < L1 < Lmed. Here, the point where the magnetic control switch one (10) contacts one end of the mechanical interlocking rod two (13) is C, and the point where the magnetic control switch two (11) contacts one end of the mechanical interlocking rod two (13) is D. When the static switch contact one (4) and the moving switch contact one are closed, and the static switch contact two (5) and the moving switch contact two (6) are closed, the distance between C and D is Lmin. When the static switch contact one (4) and the moving switch contact one are closed, the static switch contact two (5) and the moving switch contact two (6) are open, or when the static switch contact one (4) and the moving switch contact one are open, and the static switch contact two (5) and the moving switch contact two (6) are closed, the distance between C and D is Lmed; the overtravel of the switch body one (1) and the switch body two (2) is Lc.

5. The mechanical interlocking dual power switching device based on a magnetic control mechanism according to claim 1, characterized in that: Push plates (14) that contact the mechanical interlocking rod two (13) are provided on both the magnetic control switch one (10) and the magnetic control switch two (11). The point where the push plate (14) of the magnetic control switch one (10) contacts one end of the mechanical interlocking rod two (13) is C, and the point where the push plate (14) of the magnetic control switch two (11) contacts one end of the mechanical interlocking rod two (13) is D.

6. A mechanical interlocking dual power switching method based on a magnetic control mechanism, characterized in that: It includes the following steps: The magnetic control switch one (10) is excited to drive the moving conductive rod one (7) to act, so that the moving switch contact one is closed with the static switch contact one (4); at this time, the moving switch contact two (6) is open from the static switch contact two (5); if the moving switch contact two (6) and the static switch contact two (5) are closed at this time, the closing impulse will drive the mechanical interlocking rod one (12) or the mechanical interlocking rod two (13) to push open the moving switch contact one to complete the mechanical interlocking during closing. Or the magnetic control switch two (11) is excited to drive the moving conductive rod two (8) to act, so that the moving switch contact two (6) is closed with the static switch contact two (5); at this time, the moving switch contact one is open from the static switch contact one (4); if the moving switch contact one and the static switch contact one (4) are closed at this time, the closing impulse will drive the mechanical interlocking rod one (12) or the mechanical interlocking rod two (13) to push open the moving switch contact two (6) to complete the mechanical interlocking during closing.

7. A mechanical interlocking dual power switching method based on a magnetic control mechanism according to claim 6, characterized in that: The length of the mechanical interlocking rod one (12) is L, where Lmin < L < Lmed. Here, the point where the moving conductive rod one (7) contacts the mechanical interlocking rod one (12) is A, and the point where the moving conductive rod two (8) contacts the mechanical interlocking rod one (12) is B. When the static switch contact one (4) and the moving switch contact one are closed, and the static switch contact two (5) and the moving switch contact two (6) are closed, the distance between A and B is Lmin; when the static switch contact one (4) and the moving switch contact one are closed, the static switch contact two (5) and the moving switch contact two (6) are open, or when the static switch contact one (4) and the moving switch contact one are open, and the static switch contact two (5) and the moving switch contact two (6) are closed, the distance between A and B is Lmed.

8. The mechanical interlocking dual power switching method based on a magnetic control mechanism according to claim 6, characterized in that: The length of the mechanical interlocking rod two (13) is L1, where Lmin + Lc < L1 < Lmed. Here, the point where the magnetic control switch one (10) contacts one end of the mechanical interlocking rod two (13) is C, and the point where the magnetic control switch two (11) contacts one end of the mechanical interlocking rod two (13) is D. When the static switch contact one (4) and the moving switch contact one are closed, and the static switch contact two (5) and the moving switch contact two (6) are closed, the distance between C and D is Lmin. When the static switch contact one (4) and the moving switch contact one are closed, the static switch contact two (5) and the moving switch contact two (6) are open, or when the static switch contact one (4) and the moving switch contact one are open, and the static switch contact two (5) and the moving switch contact two (6) are closed, the distance between C and D is Lmed. The over-travel of the switch body one (1) and the switch body two (2) is Lc.

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