Medium voltage integrated power supply fast switching device

Abstract

The invention discloses a medium-voltage integrated power supply fast switching device, which relates to the technical field of power equipment, and comprises a first L-shaped support plate, two sliding rails are fixed on one side of the first L-shaped support plate, and a second L-shaped support plate and a third L-shaped support plate are slidably matched on the two sliding rails respectively. The standby power supply can control the first electromagnet and the second electromagnet to be powered on or off. When the first electromagnet is powered off, the first electromagnet loses power maintenance, and the corresponding connection block below slides down by its own gravity. At this time, the second contact inside the bottom recess is docked with the first contact to complete the output of the power supply. Similarly, when the second electromagnet is powered off, the second electromagnet loses power maintenance, and the corresponding connection block below slides down by its own gravity. At this time, the second contact inside the bottom recess is docked with the first contact to complete the output of another power supply, thereby avoiding the problem of affecting the normal switching work due to damage to the drive motor or lack of power in the common power supply.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, and in particular to a medium-voltage integrated power supply fast switching device. Background Technology

[0002] In the power grid, many users have high requirements for power supply reliability. Once a power outage occurs in some units, it will cause significant economic losses or even casualties. Therefore, the power supply system of these units needs to have a main power supply and a backup power supply. When the main power supply fails, the backup power supply must be put into operation immediately to restore power. In order to achieve this purpose, a dual power supply switching mechanism is needed to automatically switch between the main power supply and the backup power supply.

[0003] Patent application number CN201620870698.7 discloses a medium-voltage dual-power automatic switching device. This medium-voltage dual-power automatic switching device has a reasonable structure and strong practicality. The first and second contacts are set up to contact the contact rod. The slotted wheel and dial are set up so that the slotted wheel rotates 90 degrees for every revolution of the dial, thereby connecting different circuits and realizing the function of dual-power switching.

[0004] However, the above-mentioned device requires an additional battery to power the motor during actual operation. When the battery is dead or the motor malfunctions, it will directly affect the normal switching operation of the backup power supply. In addition, using the same contact rod and different contacts for contact will also affect the service life after long-term use.

[0005] Therefore, it is necessary to propose a medium-voltage integrated power supply fast switching device to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a medium-voltage integrated power supply fast switching device to solve the problem that in actual operation, an additional battery is needed to power the motor. When the battery is dead or the motor malfunctions, it will directly affect the normal switching operation of the backup power supply. In addition, using the same contact rod and different contacts for contact will also affect the service life after long-term use.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a medium-voltage integrated power supply fast switching device, comprising a first L-shaped support plate, two sliding rails fixed on one side of the first L-shaped support plate, a second L-shaped support plate and a third L-shaped support plate slidably fitted on the two sliding rails respectively, a connecting seat provided on both the second L-shaped support plate and the third L-shaped support plate, a first contact connected to the top of each of the two connecting seats, an insulating protective block sleeved around the outer ring of each of the two first contacts, the top of each of the two first contacts extending beyond the corresponding insulating protective block, and an electric wire provided at the bottom of each of the two connecting seats. The interface has two wire interfaces, one for a first wire and the other for a second wire. A support frame is fixed to the top of the first L-shaped support plate, and a first electromagnet and a second electromagnet are fixed to the bottom of the support frame. Two connecting blocks are magnetically attached to the bottom of the first electromagnet and the second electromagnet, and a notch is opened at the bottom of the two connecting blocks. A second contact is fixed in each of the two notches. The two first contacts are respectively in contact with the second contacts at corresponding positions. A lifting mechanism is provided below the two sliding rails, and the lifting mechanism is connected to the second L-shaped support plate and the third L-shaped support plate.

[0008] Preferably, the lifting mechanism includes a rotating shaft and a drive motor. The rotating shaft is rotatably connected to the bottom end of one side of the first L-shaped support plate. One end of the rotating shaft extends out of the first L-shaped support plate, and a cam is sleeved on the extended end. A rotating gear is fixed on the side of the cam near the first L-shaped support plate, and the rotating gear is sleeved on the outer ring of the rotating shaft.

[0009] Preferably, the cam has a first arc-shaped groove and a second arc-shaped groove on the side away from the first L-shaped support plate. The arc-shaped openings of the first arc-shaped groove and the second arc-shaped groove are arranged opposite each other and are arranged in a ring. The first L-shaped support rod and the second L-shaped support rod are rotatably arranged inside the first arc-shaped groove and the second arc-shaped groove, respectively. The sides of the first L-shaped support rod and the second L-shaped support rod that are away from each other are fixedly connected to the sides of the second L-shaped support plate and the third L-shaped support plate, respectively.

[0010] Preferably, one end of both the first L-shaped support rod and the second L-shaped support rod is rotatably connected to a sliding column that extends into the first arc-shaped groove and the second arc-shaped groove.

[0011] Preferably, the drive motor is fixed to the bottom end of the first L-shaped support plate away from the cam. A drive shaft is provided on one side of the drive motor, the drive shaft extends out of the first L-shaped support plate, and a drive gear is connected to the extended end. The drive gear meshes with the rotating gear. A power supply is provided above the drive motor, and the power supply is electrically connected to the drive motor.

[0012] Preferably, a backup power supply is fixed at the top of the support frame, and the backup power supply is electrically connected to the first electromagnet and the second electromagnet respectively. Both connecting blocks are connected with wires.

[0013] Preferably, cooling fans are provided on the outer sides of both connecting seats.

[0014] Preferably, both the second L-shaped support plate and the third L-shaped support plate have openings at their bottom ends for power supply line interfaces to pass through.

[0015] Preferably, both the second L-shaped support plate and the third L-shaped support plate have sliders fixed on the side closest to the first L-shaped support plate, and the sliders are fitted onto sliding tracks at corresponding positions.

[0016] Preferably, an extension block is fixed on the side of the support frame near the connecting block, and a sliding groove is provided on the extension block for the connecting block to slide up and down. A movable block is fixed on one side of the connecting block, and the movable block is fitted inside the sliding groove.

[0017] The technical effects and advantages of this invention are as follows:

[0018] 1. In the actual operation of this invention, under normal conditions, the two connecting blocks are respectively attracted and connected to the first electromagnet and the second electromagnet. When the main power supply is cut off and the drive motor cannot start, the backup power supply can control the first electromagnet and the second electromagnet to be energized or de-energized. When the first electromagnet is de-energized, it loses power and the corresponding connecting block below slides down by its own gravity. At this time, the second contact inside the bottom notch and the first contact engage to complete the power output. Similarly, when the second electromagnet is de-energized, it loses power and the corresponding connecting block below slides down by its own gravity. At this time, the second contact inside the bottom notch and the first contact engage to complete the output of the other power supply. Therefore, the problem of normal switching operation being affected by damage to the drive motor or failure of the main power supply is avoided.

[0019] 2. In the actual operation of this invention, the first wire and the second wire are connected to different power sources.

[0020] By starting the drive motor, the drive motor drives the cam to rotate through the rotating gear. At this time, the first and second arc-shaped grooves on one side of the cam will rotate with the cam, thereby causing the first and second L-shaped support rods inside the first and second arc-shaped grooves to move with the groove body. As the first and second L-shaped support rods move, a height difference is generated. The first and second L-shaped support rods drive the second and third L-shaped support plates to slide up and down on the sliding track. When the first L-shaped support rod rises, the second L-shaped support rod will descend. At this time, the first contact on the second L-shaped support plate enters the corresponding notch and connects with the second contact to complete the power output.

[0021] 3. Similarly, when the second L-shaped support rod rises, the first L-shaped support rod descends, and the first contact on the third L-shaped support plate enters the corresponding notch and connects with the second contact to complete the output of another power source. The first and second L-shaped support rods do not interfere with each other, and only one power source can be connected at a time, making it convenient to use and highly safe. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the integrated medium-voltage power supply fast switching device of the present invention from one perspective.

[0023] Figure 2 This is a schematic diagram of the integrated medium-voltage power supply fast switching device of the present invention from another perspective.

[0024] Figure 3 This is a schematic diagram of the notch and wire structure of the present invention.

[0025] In the diagram: 1. First L-shaped support plate; 2. Sliding rail; 3. Second L-shaped support plate; 4. Connecting seat; 5. Wire interface; 6. First wire; 7. Second wire; 8. Through opening; 9. Insulating protection block; 10. First contact; 11. Support frame; 12. Backup power supply; 13. First electromagnet; 14. Connecting block; 15. Second electromagnet; 16. Cam; 17. First arc groove; 18. First L-shaped support rod; 19. Second arc groove; 20. Second L-shaped support rod; 21. Third L-shaped support plate; 22. Cooling fan; 23. Notch; 24. Wire; 25. Drive motor; 26. Drive gear; 27. Rotating gear; 28. Rotating shaft; 29. ​​Main power supply; 30. Sliding column; 31. Extension block. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] This invention provides, for example Figures 1-3 The medium-voltage integrated power supply quick switching device shown includes a first L-shaped support plate 1. Two sliding rails 2 are fixed on one side of the first L-shaped support plate 1. A second L-shaped support plate 3 and a third L-shaped support plate 21 are slidably fitted on the two sliding rails 2 respectively. A connecting seat 4 is provided on both the second L-shaped support plate 3 and the third L-shaped support plate 21. The second L-shaped support plate 3 and the third L-shaped support plate 21 can support the connecting seat 4.

[0028] The top of each of the two connecting seats 4 is connected to a first contact 10. An insulating protective block 9 is sleeved on the outer ring of the two first contacts 10. The top of each of the two first contacts 10 extends out of the corresponding position of the insulating protective block 9. The insulating protective block 9 is made of insulating materials such as ceramic materials to protect the outside of the first contact 10.

[0029] Both connecting seats 4 have wire interfaces 5 at their bottom ends, with a first wire 6 and a second wire 7 connected to each interface 5. A support frame 11 is fixed to the top of the first L-shaped support plate 1, and a first electromagnet 13 and a second electromagnet 15 are fixed to the bottom of the support frame 11. Two connecting blocks 14 are magnetically attached to the bottom of each of the first and second electromagnets 13 and 15, respectively. A notch 23 is formed at the bottom of each connecting block 14, and a second contact is fixed within each notch 23. Two first contacts 10 are respectively connected to the corresponding second contacts. A lifting mechanism is provided below the two sliding rails 2, and this mechanism is connected to the second L-shaped support plate 3 and the third L-shaped support plate 21. A slider is fixed to the side of the second L-shaped support plate 3 and the third L-shaped support plate 21 closest to the first L-shaped support plate 1, and the slider is fitted onto the corresponding sliding rail 2. The second L-shaped support plate 3 and the third L-shaped support plate 21 can slide up and down on the sliding rail 2 via the slider.

[0030] The lifting mechanism includes a rotating shaft 28 and a drive motor 25. The rotating shaft 28 is rotatably connected to the bottom end of one side of the first L-shaped support plate 1. One end of the rotating shaft 28 extends out of the first L-shaped support plate 1, and a cam 16 is sleeved on the extended end. A rotating gear 27 is fixed on the side of the cam 16 near the first L-shaped support plate 1, and the rotating gear 27 is sleeved on the outer ring of the rotating shaft 28. The drive motor 25 drives the cam 16 to rotate through the rotating gear 27.

[0031] The cam 16 has a first arc-shaped groove 17 and a second arc-shaped groove 19 on the side away from the first L-shaped support plate 1. The arc-shaped openings of the first arc-shaped groove 17 and the second arc-shaped groove 19 are arranged opposite each other and are arranged in a ring. The first L-shaped support rod 18 and the second L-shaped support rod 20 are respectively rotatably arranged inside the first arc-shaped groove 17 and the second arc-shaped groove 19. The sides of the first L-shaped support rod 18 and the second L-shaped support rod 20 that are away from each other are fixedly connected to the sides opposite to the second L-shaped support plate 3 and the third L-shaped support plate 21.

[0032] Both the first L-shaped support rod 18 and the second L-shaped support rod 20 have a sliding column 30 rotatably connected to one end, extending into the first arc-shaped groove 17 and the second arc-shaped groove 19, respectively. Both connecting blocks 14 are connected to wires 24. The wires 24 can output the connected power. The drive motor 25 is fixed to the bottom end of the first L-shaped support plate 1 on the side away from the cam 16. A drive shaft is provided on one side of the drive motor 25, extending out of the first L-shaped support plate 1, and the extended end is connected to a drive gear 26. The drive gear 26 meshes with a rotating gear 27. A mains power supply 29 is provided above the drive motor 25, and the mains power supply 29 is electrically connected to the drive motor 25. The mains power supply 29 provides power support to the drive motor 25.

[0033] In the actual operation of this invention, the first wire 6 and the second wire 7 are respectively connected to different power sources.

[0034] By starting the drive motor 25, the drive motor 25 drives the cam 16 to rotate through the rotating gear 27. At this time, the first arc-shaped groove 17 and the second arc-shaped groove 19 on one side of the cam 16 will rotate with the cam 16, thereby causing the first L-shaped support rod 18 and the second L-shaped support rod 20 inside the first arc-shaped groove 17 and the second arc-shaped groove 19 to move with the groove. As the first L-shaped support rod 18 and the second L-shaped support rod 20 move, a height difference will be generated. The first L-shaped support rod 18 and the second L-shaped support rod 20 drive the second L-shaped support plate 3 and the third L-shaped support plate 21 to slide up and down on the sliding track 2. When the first L-shaped support rod 18 rises, the second L-shaped support rod 20 will fall. At this time, the first contact 10 on the second L-shaped support plate 3 enters the corresponding recess 23 and connects with the second contact to complete the power output.

[0035] Similarly, when the second L-shaped support rod 20 rises, the first L-shaped support rod 18 descends, and the first contact 10 on the third L-shaped support plate 21 enters the corresponding recess 23 and connects with the second contact to complete the output of another power source. The first L-shaped support rod 18 and the second L-shaped support rod 20 do not interfere with each other, and only one power source can be connected at a time, making it convenient to use and with a high safety factor.

[0036] A backup power supply 12 is fixed to the top of the support frame 11. The backup power supply 12 is electrically connected to the first electromagnet 13 and the second electromagnet 15. The bottom ends of the second L-shaped support plate 3 and the third L-shaped support plate 21 are provided with openings 8 for the power supply line interface 5 to pass through. An extension block 31 is fixed to the side of the support frame 11 near the connecting block 14. The extension block 31 has a sliding groove for the connecting block 14 to slide up and down. A movable block is fixed to one side of the connecting block 14, and the movable block fits into the sliding groove. The top of the connecting block 14 is made of a magnetically attractive material, such as iron or a magnetic material.

[0037] In the actual operation of this invention, under normal conditions, the two connecting blocks 14 are respectively attracted and connected to the first electromagnet 13 and the second electromagnet 15. When the main power supply 29 is de-energized and the drive motor 25 cannot start, the backup power supply 12 can control the first electromagnet 13 and the second electromagnet 15 to be energized or de-energized. When the first electromagnet 13 is de-energized, it loses its power and magnetic force and no longer attracts the connecting block 14. The corresponding connecting block 14 below slides down by its own gravity. At this time, the second contact and the first contact 10 inside the bottom recess 23 dock to complete the power output. Similarly, when the second electromagnet 15 is de-energized, it loses its power and the corresponding connecting block 14 below slides down by its own gravity. At this time, the second contact and the first contact 10 inside the bottom recess 23 dock to complete the output of another power source. Therefore, the problem of normal switching operation being affected by damage to the drive motor 25 or the lack of power in the main power supply 29 is avoided.

[0038] Both connectors 4 are equipped with cooling fans 22 on their outer sides, which can cool the device and prevent it from getting too hot.

Claims

1. A medium voltage integrated power supply fast switching device, comprising a first L-shaped support plate (1), characterized in that: Two sliding rails (2) are fixed on one side of the first L-shaped support plate (1), and a second L-shaped support plate (3) and a third L-shaped support plate (21) are slidably matched on the two sliding rails (2), and a connecting seat (4) is provided on the second L-shaped support plate (3) and the third L-shaped support plate (21), and the top ends of the two connecting seats (4) are connected to first contacts (10), and the outer ring sleeves of the two first contacts (10) are provided with insulating protection blocks (9), and the top ends of the two first contacts (10) extend out of the insulating protection blocks (9) at corresponding positions, and the bottom ends of the two connecting seats (4) are provided with wire interfaces (5), and the first wire (6) and the second wire (6) are connected to the two wire interfaces (5) respectively. line (7), a support frame (11) is fixed at the top end of the first L-shaped support plate (1), a first electromagnet (13) and a second electromagnet (15) are respectively fixed at the bottom end of the support frame (11), two connecting blocks (14) are respectively magnetically arranged at the bottom ends of the first electromagnet (13) and the second electromagnet (15), a notch (23) is provided at the bottom ends of the two connecting blocks (14), a second contact is fixed in each of the two notches (23), the two first contacts (10) are respectively contacted and connected with the second contacts at corresponding positions, a lifting mechanism is arranged below the two sliding rails (2), and the lifting mechanism is connected with the second L-shaped support plate (3) and the third L-shaped support plate (21); The lifting mechanism comprises a rotating shaft (28) and a driving motor (25); the rotating shaft (28) is rotatably connected to the bottom end of one side of the first L-shaped support plate (1); one end of the rotating shaft (28) extends out of the first L-shaped support plate (1), and a cam (16) is sleeved on the extended end; a rotating gear (27) is fixed to a side of the cam (16) close to the first L-shaped support plate (1), and the rotating gear (27) is sleeved on the outer ring of the rotating shaft (28); A first arc-shaped groove (17) and a second arc-shaped groove (19) are formed on a side of the cam (16) away from the first L-shaped support plate (1), the arc-shaped openings of the first arc-shaped groove (17) and the second arc-shaped groove (19) are arranged opposite to each other, and the first arc-shaped groove (17) and the second arc-shaped groove (19) are distributed in an annular shape, and a first L-shaped support rod (18) and a second L-shaped support rod (20) are rotatably arranged inside the first arc-shaped groove (17) and the second arc-shaped groove (19), and the sides of the first L-shaped support rod (18) and the second L-shaped support rod (20) away from each other are fixedly connected to the sides of the second L-shaped support plate (3) and the third L-shaped support plate (21) opposite to each other; One end of the first L-shaped support rod (18) and the second L-shaped support rod (20) is rotatably connected to a sliding column (30) extending into the first arc-shaped groove (17) and the second arc-shaped groove (19); The drive motor (25) is fixed to the bottom end of the first L-shaped support plate (1) away from the cam (16); a drive shaft is provided on one side of the drive motor (25); the drive shaft extends out of the first L-shaped support plate (1), and a drive gear (26) is connected to the extended end; the drive gear (26) is meshed with the rotating gear (27); a common power supply (29) is provided above the drive motor (25); the common power supply (29) and the drive motor (25) are electrically connected; A backup power source (12) is fixed to the top of the support frame (11), and the backup power source (12) is electrically connected to the first electromagnet (13) and the second electromagnet (15), respectively. The two connection blocks (14) are both connected to a wire (24).

2. The medium voltage integrated power supply fast switching device according to claim 1, characterized in that: Cooling fans (22) are provided on the outer sides of the two connection seats (4).

3. The medium voltage integrated power supply fast switching device according to claim 1, characterized in that: The bottom ends of the second L-shaped support plate (3) and the third L-shaped support plate (21) are both provided with a through hole (8) through which the power line interface (5) passes.

4. The medium voltage integrated power supply fast switching device according to claim 1, characterized in that: A sliding block is fixed to the second L-shaped support plate (3) and the third L-shaped support plate (21) on one side close to the first L-shaped support plate (1), and the sliding block is mounted on the sliding track (2) at the corresponding position.

5. The medium voltage integrated power supply fast switching device according to claim 1, characterized in that: An extension block (31) is fixed to one side of the support frame (11) close to the connection block (14); a sliding groove is provided on the extension block (31) for the connection block (14) to slide up and down; a moving block is fixed to one side of the connection block (14); the moving block fits inside the sliding groove.

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