A quick-acting electromagnetic control switch structure

Abstract

The utility model discloses a quick reaction's electromagnetic control switch structure belongs to switch technical field, including support seat and vacuum arc extinguishing chamber, and vacuum arc extinguishing chamber fixedly located at the top of support seat, and the bottom fixed mounting of vacuum arc extinguishing chamber has dynamic conducting rod, and the inside of support seat is provided with cavity, and the bottom of dynamic conducting rod is located in the cavity, and the inside fixed mounting of cavity has the control structure for controlling the electrification situation in vacuum arc extinguishing chamber, through setting chain cooperation limiting structure, when being in electrification state, chain can keep slack state under the action of limiting structure, effectively reduces the interference of short current fluctuation to push block, avoids the misoperation, improves the stability and reliability of device under complex electromagnetic environment, guarantees the electrification state stability of vacuum arc extinguishing chamber, reduces the failure risk.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, specifically to an electromagnetically controlled switch structure with a fast response. Background Technology

[0002] In modern power systems, some scenarios with extremely high requirements for timely power supply need to have switches capable of rapidly responding to power on / off commands. Using a fast-responding electromagnetic control switch structure can ensure the timeliness and accuracy of power supply.

[0003] Chinese patent discloses an electromagnetic control mechanism and switch (publication number CN220984428U). This patent includes a hinge base, a connecting rod, a support plate, a sliding frame, a stationary iron core, a moving iron core, and a tension spring. The hinge base and the connecting rod are disposed at the lower part of the support plate. The middle part of the connecting rod is hinged to the hinge base. The lower end of the sliding frame passes through the support plate and is connected to the rear middle part of the connecting rod. The sliding frame is slidably mounted. The stationary iron core is mounted on the support plate, and the moving iron core is mounted on the sliding frame, positioned above the stationary iron core. The upper end of the tension spring is fixedly mounted, and the lower end of the tension spring passes through the support plate and is connected to the rear end of the connecting rod. The front end of the connecting rod is connected to the output end.

[0004] Therefore, based on the above search and combined with existing data, in practical application scenarios, the voltage and frequency of the power grid will change due to many factors, which will cause current fluctuations. Current fluctuations may cause the power supply of the electromagnetic control switch to be interrupted or abnormal. However, the patent does not have a corresponding buffer structure. When the power supply is briefly interrupted, it may cause unnecessary frequent actions at the output end of the linkage, making the device unstable in operation when powered on, increasing the risk of misoperation, and making it difficult to accurately and stably control the opening and closing actions of the moving and stationary contacts of the vacuum interrupter. This limits the application of the device in complex working conditions with high requirements for stability and anti-interference, and reduces the stability of the device operation. Utility Model Content

[0005] The purpose of this invention is to provide a fast-responding electromagnetic control switch structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A fast-response electromagnetic control switch structure includes a support base and a vacuum interrupter. The vacuum interrupter is fixedly located at the top of the support base, and a moving conductive rod is fixedly installed at the bottom of the vacuum interrupter. The support base has a cavity inside, and the bottom end of the moving conductive rod is located inside the cavity. A control structure for controlling the energization of the vacuum interrupter is fixedly installed inside the cavity.

[0008] The control structure includes a fixed frame, which is fixedly located inside a cavity. A push block and a transmission block are slidably installed inside the fixed frame, with the push block positioned above the transmission block. The top end of the push block is fixedly connected to the bottom end of the moving conductive rod. The transmission block drives the push block to move upward, pushing the moving conductive rod to connect the vacuum interrupter chamber and achieve the power-on function. A gap is provided between the push block and the transmission block, and the two are fixedly connected by a chain. A limiting structure for controlling the chain to be in a slack state is fixedly installed on one side of the transmission block, so as to reduce the probability of push block misoperation caused by short-term current fluctuations by utilizing the slack chain.

[0009] As a further embodiment of this utility model, the limiting structure includes a connecting rod, one end of which is fixedly connected to the transmission block, and the other end of which is ball-jointed with a sliding rod. The end of the sliding rod away from the connecting rod is slidably connected to a limiting block. The inner cavity of the limiting block is provided with a limiting groove for limiting the position of the transmission block, and one end of the sliding rod is located in the limiting groove.

[0010] As a further embodiment of this utility model, the bottom end of the push block is fixedly equipped with a pull rope for driving the push block to move downward and a return spring for driving the push block to move upward. The bottom end of the return spring is fixedly connected to the bottom end of the inner cavity of the fixed frame, and the bottom end of the pull rope is fixedly connected to a drive structure for driving the pull rope to move.

[0011] As a further embodiment of this utility model, the driving structure includes a rotating rod, one end of which is rotatably connected to the inner wall of the fixed frame via a bearing, and the other end of the rotating rod is fixedly connected to a take-up roller for storing the pull rope, with the end of the pull rope away from the transmission block wrapped around the outer wall of the take-up roller. A gear for driving the rotating rod to rotate is fixedly sleeved on the outer wall of the rotating rod.

[0012] As a further embodiment of this utility model, the driving structure also includes a support frame, which is fixedly located at the bottom of the inner cavity of the fixed frame. A rack for driving the gear to rotate is slidably connected to the inner cavity of the fixed frame. An armature block is fixedly installed at the bottom of the rack, and an electromagnetic block is installed on one side of the support frame.

[0013] As a further embodiment of this utility model, a base for fixing the vacuum interrupter is fixedly installed at the top of the inner cavity of the support base, and the bottom end of the vacuum interrupter is engaged with the inner cavity of the base.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. When this utility model is used, by setting up a chain in conjunction with a limiting structure, when the device is energized, the chain can remain slack under the action of the limiting structure, effectively reducing the interference of short-term current fluctuations on the push block, avoiding misoperation, improving the stability and reliability of the device in complex electromagnetic environments, ensuring the stable energization state of the vacuum interrupter, and reducing the risk of failure.

[0016] 2. When this utility model is used, by means of the magnetic interaction between the electromagnetic block and the armature block, the rack, gear and take-up roller can be driven to work together to control the rapid release or tightening of the pull rope, and achieve precise control of the displacement of the push block and the moving conductive rod, thereby ensuring that the vacuum interrupter can complete the switching of power on or power off in a very short time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an electromagnetically controlled switch that can respond quickly.

[0018] Figure 2 This is a cross-sectional view of the overall structure of an electromagnetically controlled switch that can respond quickly.

[0019] Figure 3 This is an exploded view of the limit structure in a fast-responding electromagnetic control switch.

[0020] Figure 4 This is a structural diagram of the drive structure in a fast-responding electromagnetic control switch.

[0021] Figure 5 This is an exploded view of the drive structure in a fast-responding electromagnetic control switch.

[0022] In the diagram: 1. Support base; 2. Vacuum interrupter; 3. Moving conductive rod; 4. Fixing frame; 5. Pushing block; 6. Transmission block; 7. Chain; 701. Connecting rod; 702. Sliding rod; 703. Limiting block; 704. Limiting groove; 705. Magnetic block; 706. Connecting buckle; 8. Pull rope; 801. Rotating rod; 802. Take-up roller; 803. Gear; 804. Stand; 805. Rack; 806. Armature block; 807. Electromagnetic block; 808. Resistance groove; 809. Damping slider; 9. Return spring; 10. Base. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: Please refer to Figures 1-4 A fast-response electromagnetic control switch structure includes a support base 1 and a vacuum interrupter 2. The vacuum interrupter 2 is fixedly located at the top of the support base 1, and a moving conductive rod 3 is fixedly installed at the bottom of the vacuum interrupter 2. A cavity is opened inside the support base 1, and the bottom end of the moving conductive rod 3 is located inside the cavity. A control structure for controlling the energization of the vacuum interrupter 2 is fixedly installed inside the cavity.

[0025] The control structure includes a fixed frame 4, which is fixedly located in the cavity. A push block 5 and a transmission block 6 are slidably installed in the inner cavity of the fixed frame 4, with the push block 5 located above the transmission block 6. The top end of the push block 5 is fixedly connected to the bottom end of the moving conductive rod 3. The push block 5 is driven to move upward through the transmission block 6, which pushes the moving conductive rod 3 to connect the inside of the vacuum interrupter 2 and realize the power supply function. A gap is provided between the push block 5 and the transmission block 6, and the two are fixedly connected by a chain 7. A limiting structure for controlling the chain 7 to be in a slack state is fixedly installed on one side of the transmission block 6, so as to reduce the probability of the push block 5 being misoperated due to short-term current fluctuations by utilizing the slack chain 7.

[0026] The limiting structure includes a connecting rod 701, one end of which is fixedly connected to the transmission block 6, and the other end of the connecting rod 701 is ball-jointed to a sliding rod 702. The end of the sliding rod 702 away from the connecting rod 701 is slidably connected to a limiting block 703. The inner cavity of the limiting block 703 is provided with a limiting groove 704 for limiting the position of the transmission block 6, and one end of the sliding rod 702 is located in the limiting groove 704.

[0027] Specifically, a magnetic block 705 for pushing the sliding rod 702 to move is fixedly installed at the top of the limiting block 703. The sliding rod 702 is set as a magnetic rod, and the magnetic block 705 and the sliding rod 702 are magnetically repelled. A connecting buckle 706 for connecting the chain 7 is fixedly installed at the bottom of the pushing block 5 and the top of the transmission block 6, and the chain 7 and the connecting buckle 706 are fixedly connected.

[0028] More specifically, the inner cavity of the limiting groove 704 has three points: A, B, and C (please refer to [reference needed] for details). Figure 3When the vacuum interrupter 2 is de-energized, the transmission block 6 moves down along the limiting groove 704 from point A to point B, thereby pulling the chain 7 and causing the push block 5 to move down as well, thus de-energizing the vacuum interrupter 2. When the vacuum interrupter 2 is energized, the transmission block 6 moves up along the limiting groove 704 from point B to point C, thereby folding the chain 7 and pushing the push block 5 up, thus energizing the vacuum interrupter 2. Then, the magnetic block 705 generates a repulsive magnetic force with the sliding rod 702, which pushes the sliding rod 702 along the limiting groove 704 from point C to point A. At this time, a certain gap is generated between the transmission block 6 and the push block 5, so that the chain 7 is in a slack state. The slack chain 7, with its own flexibility, avoids directly transmitting short-term current fluctuations to the push block 5 and the moving conductive rod 3, thereby ensuring that the energization state inside the vacuum interrupter 2 is stable and reliable, improving the stability and reliability of the entire control structure under complex working conditions, and reducing the probability of malfunctions or failures caused by external interference.

[0029] Example 2: Please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 The bottom end of the push block 5 is fixedly installed with a pull rope 8 for driving the push block 5 to move downward and a return spring 9 for driving the push block 5 to move upward. The bottom end of the return spring 9 is fixedly connected to the bottom end of the inner cavity of the fixed frame 4. The bottom end of the pull rope 8 is fixedly connected with a drive structure for driving the pull rope 8 to move.

[0030] Specifically, the fixed frame 4 has a moving groove inside for moving the push block 5, and both the push block 5 and the return spring 9 are located in the moving groove; the fixed frame 4 has a sliding groove on the side near the connecting rod 701 for sliding the connecting rod 701, and the connecting rod 701 is located in the sliding groove.

[0031] The drive structure includes a rotating rod 801. One end of the rotating rod 801 is rotatably connected to the inner wall of the fixed frame 4 via a bearing. The other end of the rotating rod 801 is fixedly connected to a take-up roller 802 for storing the pull rope 8. The end of the pull rope 8 away from the transmission block 6 is wrapped around the outer wall of the take-up roller 802. A gear 803 for driving the rotating rod 801 to rotate is fixedly sleeved on the outer wall of the rotating rod 801.

[0032] The drive structure also includes a stand 804, which is fixedly located at the bottom of the inner cavity of the fixed frame 4. The inner cavity of the fixed frame 4 is slidably connected to a rack 805 for driving the gear 803 to rotate. An armature block 806 is fixedly installed at the bottom of the rack 805. An electromagnetic block 807 is installed on one side of the stand 804.

[0033] Specifically, the electromagnetic block 807 is fixed at the bottom of the inner cavity of the fixing frame 4. Multiple sets of electromagnetic coils are wound around the outer wall of the electromagnetic block 807. By energizing the electromagnetic coils, the electromagnetic block 807 generates a repulsive force against the magnetic force of the armature block 806. This causes the armature block 806 to push the rack 805 upward along the upright frame 804. The rack 805 drives the gear 803 to control the rotation rod 801 to rotate, which in turn drives the take-up roller 802 to rotate, thereby releasing the pull rope 8. This allows the return spring 9 to push the transmission... Moving block 6 drives pushing block 5 to move upward, allowing moving conductive rod 3 to move into vacuum interrupter 2, thereby energizing the vacuum interrupter 2. Conversely, when power needs to be cut off, the electromagnetic coil loses its magnetic force due to the disconnection of current, and rack 805 naturally moves downward under the influence of gravity, driving gear 803 to rotate in the opposite direction. This causes take-up roller 802 to tighten pull rope 8, pulling transmission block 6 to drive chain 7 to control pushing block 5 to move downward, allowing moving conductive rod 3 to follow and thus de-energize the vacuum interrupter 2.

[0034] More specifically, the inner cavity of the support frame 804 is provided with a resistance groove 808 for providing sliding limit for the rack 805. A damping strip 809 is fixedly connected to one side of the rack 805, and the damping strip 809 is located in the resistance groove 808. The left and right inner walls of the resistance groove 808 are inclined towards the center of the resistance groove 808, and the end of the damping strip 809 near the inner wall of the resistance groove 808 is provided with an inclined surface parallel to the inner wall of the resistance groove 808. Through the cooperation of the damping strip 809 and the resistance groove 808, the rack 805 can be limited to prevent the rack 805 from disengaging from the resistance groove 808 during the sliding process.

[0035] Please see Figure 1 , Figure 2 The top of the inner cavity of the support base 1 is fixedly installed with a base 10 for fixing the vacuum interrupter 2, and the bottom end of the vacuum interrupter 2 is engaged with the inner cavity of the base 10.

[0036] The working principle of this utility model is as follows:

[0037] First, the vacuum interrupter 2 is installed inside the base 10. When energized, the electromagnetic coil connected to the electromagnetic block 807 generates a magnetic force that repels the armature block 806, thereby pushing the armature block 806 to drive the rack 805 to move upward along the stand 804. The rack 805, under force, drives the gear 803 to drive the rotating rod 801 to rotate, causing the take-up roller 802 to rotate accordingly, releasing the pull rope 8. This allows the reset spring 9 to push the transmission block 6 to fold the chain 7 and drive the push block 5 to move upward. Thus, the push block 5 pushes the moving conductive rod 3 to move into the vacuum interrupter 2, thereby energizing the vacuum interrupter 2.

[0038] Simultaneously, as the transmission block 6 moves upward, the connecting rod 701 drives the sliding rod 702 to slide along the limiting groove 704, moving from point B to point C. Then, the magnetic block 705 generates a magnetic force that repels the sliding rod 702, pushing the sliding rod 702 along the limiting groove 704 from point C to point A. This causes the transmission block 6 to move downward a certain distance, thereby compressing the return spring 9 into a semi-charged state. At this time, a gap is created between the transmission block 6 and the pushing block 5, allowing the chain 7 to be in a slack state, reducing the impact of brief current fluctuations. The probability of misoperation of push block 5, and when slide rod 702 moves to point C, transmission block 6 will pull pull rope 8 to drive take-up roller 802 to rotate, causing gear 803 to drive rack 805 to move continuously upward. When slide rod 702 moves to point A, rack 805 drives armature block 806 to move naturally downward under the influence of gravity to be close to electromagnetic block 807, and uses repulsive magnetic force to stabilize the position of rack 805, thereby driving gear 803 to control take-up roller 802 to rotate in the opposite direction, tighten pull rope 8, and keep it in a taut state;

[0039] When the power is off, the electromagnetic block 807 disconnects the current, and the magnetic force repelling the armature block 806 disappears. The rack 805 naturally moves downward under the influence of gravity, causing the armature block 806 to come into contact with the electromagnetic block 807. The rack 805 drives the gear 803 to rotate in the opposite direction, which in turn causes the take-up roller 802 to pull the pull rope 8 to retract. This pulls the transmission block 6, causing the sliding rod 702 to move from point A to point B along the limiting groove 704. The transmission block 6 drives the chain 7 to control the push block 5 to move downward, allowing the moving conductive rod 3 to follow and move downward, thereby de-energizing the vacuum interrupter 2. At the same time, as the transmission block 6 moves downward, it continues to compress the reset spring 9, keeping the reset spring 9 in a fully charged state so that it can push the transmission block 6 upward next time, thereby energizing the vacuum interrupter 2.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rapidly responsive electromagnetic control switch structure, comprising a support base (1) and a vacuum interrupter (2), characterized in that, The vacuum interrupter (2) is fixedly located at the top of the support base (1), and a moving conductive rod (3) is fixedly installed at the bottom of the vacuum interrupter (2). The support base (1) has a cavity inside, and the bottom of the moving conductive rod (3) is located inside the cavity. A control structure for controlling the power supply inside the vacuum interrupter (2) is fixedly installed inside the cavity. The control structure includes a fixed frame (4), which is fixedly located in the cavity. A push block (5) and a transmission block (6) are slidably installed in the inner cavity of the fixed frame (4), and the push block (5) is located above the transmission block (6). The top end of the push block (5) is fixedly connected to the bottom end of the moving conductive rod (3). The push block (5) is driven to move upward by the transmission block (6), which pushes the moving conductive rod (3) to make the vacuum interrupter (2) connected and realize the power supply function. There is a gap between the push block (5) and the transmission block (6), and the two are fixedly connected by a chain (7). A limiting structure for controlling the chain (7) to be in a slack state is fixedly installed on one side of the transmission block (6) so as to reduce the probability of the push block (5) being misoperated due to short-term current fluctuations by using the slack chain (7).

2. The electromagnetically controlled switch structure with rapid response according to claim 1, characterized in that, The limiting structure includes a connecting rod (701), one end of which is fixedly connected to the transmission block (6), and the other end of which is ball-jointed with a sliding rod (702). The end of the sliding rod (702) away from the connecting rod (701) is slidably connected to a limiting block (703). The inner cavity of the limiting block (703) is provided with a limiting groove (704) for limiting the position of the transmission block (6), and one end of the sliding rod (702) is located in the limiting groove (704).

3. The electromagnetic control switch structure with rapid response according to claim 1, characterized in that, The bottom end of the push block (5) is fixedly installed with a pull rope (8) for driving the push block (5) to move down and a reset spring (9) for pushing the push block (5) to move up. The bottom end of the reset spring (9) is fixedly connected to the bottom end of the inner cavity of the fixed frame (4). The bottom end of the pull rope (8) is fixedly connected with a drive structure for driving the pull rope (8) to move.

4. The electromagnetic control switch structure with rapid response according to claim 3, characterized in that, The drive structure includes a rotating rod (801), one end of which is rotatably connected to the inner wall of the fixed frame (4) via a bearing, and the other end of which is fixedly connected to a take-up roller (802) for storing the pull rope (8), and the end of the pull rope (8) away from the transmission block (6) is wrapped around the outer wall of the take-up roller (802). The outer wall of the rotating rod (801) is fixedly fitted with a gear (803) for driving the rotating rod (801) to rotate.

5. The electromagnetic control switch structure with rapid response according to claim 3, characterized in that, The drive structure also includes a stand (804), which is fixedly located at the bottom of the inner cavity of the fixed frame (4). The inner cavity of the fixed frame (4) is slidably connected to a rack (805) for driving the gear (803) to rotate. An armature block (806) is fixedly installed at the bottom of the rack (805). An electromagnetic block (807) is installed on one side of the stand (804).

6. The electromagnetically controlled switch structure with rapid response according to claim 1, characterized in that, The top of the inner cavity of the support base (1) is fixedly installed with a base (10) for fixing the vacuum interrupter (2), and the bottom end of the vacuum interrupter (2) is engaged with the inner cavity of the base (10).

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