A high-speed circuit breaking electromagnet

Abstract

This utility model discloses a high-speed circuit-breaking electromagnet, relating to the field of electromagnet technology. It includes: a mounting mechanism; a fixing mechanism mounted on one side of the mounting mechanism; an elastic support mechanism mounted on the other side of the mounting mechanism; and a moving mechanism that is movably coupled relative to the mounting mechanism. The elastic support mechanism provides elastic support for the moving mechanism, which can move relative to the fixing mechanism. This electromagnet, by placing a contact spring inside the moving iron core, ensures stable contact and prevents detachment even when the electromagnet is vibrating, thus increasing the safety performance of the electromagnet.

Description

Technical Field

[0001] This utility model relates to the field of electromagnet technology, specifically a high-speed circuit-breaking electromagnet. Background Technology

[0002] In fields such as industrial control and power systems, high-speed circuit-breaking electromagnets serve as critical actuators, and their operational stability and safety directly impact the reliable operation of the entire system. With the continuous improvement of industrial automation, increasingly higher demands are being placed on the response speed, vibration resistance, and safety performance of high-speed circuit-breaking electromagnets.

[0003] In existing technologies, high-speed circuit-breaking electromagnets typically rely on the electromagnetic force generated by energizing an electromagnetic coil to drive the moving iron core and the stationary iron core to engage, thereby controlling the circuit's on / off state. To ensure stable contact at the circuit contacts after the moving and stationary iron cores engage, a large supply current is often required to maintain sufficient electromagnetic force. This not only increases the burden on the power supply system but also makes the electromagnet highly dependent on the supply current. Once the supply current fluctuates or drops momentarily, it can easily lead to insufficient electromagnetic force, resulting in poor contact at the contacts.

[0004] Meanwhile, in vibrating working environments, such as rail transportation and mechanical equipment operation, the components of the electromagnet are subject to continuous vibration. In existing structures, the contact stability of the circuit contacts mainly relies on electromagnetic attraction and the support of simple elastic elements (such as return springs). However, the stiffness of the return spring is relatively low, making it difficult to effectively counteract the impact force of vibration under vibration conditions. This can easily lead to poor contact problems such as loosening or detachment of the contacts between the moving and stationary iron cores. Poor contact not only causes circuit failure but, more seriously, the momentary gap during contact can trigger electric sparks, which greatly increases safety hazards in flammable and explosive environments, seriously threatening the safety of equipment and operators. Furthermore, long-term poor contact will accelerate contact wear and oxidation, shorten the electromagnet's lifespan, and increase maintenance costs.

[0005] Therefore, how to reduce the dependence of high-speed circuit breaking electromagnets on the power supply current, while improving the stability and safety of contact points under vibration, has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-speed circuit-breaking electromagnet, comprising:

[0007] Installation organization;

[0008] A fixing mechanism is installed on one side of the mounting mechanism;

[0009] An elastic support mechanism is installed on the other side of the mounting mechanism;

[0010] A movable mechanism is provided, which is movably coupled to the mounting mechanism. The elastic support mechanism is used to provide elastic support for the movable mechanism, and the movable mechanism can move relative to the fixed mechanism.

[0011] Preferably, the mounting mechanism includes:

[0012] The mounting housing has an opening on one side, and the fixing mechanism cooperates with the opening.

[0013] An electromagnetic coil, which is fitted inside the mounting housing.

[0014] Preferably, the fixing mechanism includes:

[0015] A magnetic yoke, which is fixedly fitted onto the opening on one side of the mounting housing;

[0016] A fixed iron core is inserted and disposed in the middle of the magnetic yoke, and the fixed iron core slides relative to the moving mechanism.

[0017] Preferably, the fixing mechanism further includes:

[0018] A magnetic shielding pad is fixedly installed between the magnetic yoke and the fixed iron core.

[0019] Preferably, the elastic support mechanism includes:

[0020] A protective cover is installed on the other side of the mounting housing;

[0021] A reset spring is disposed inside the protective cover.

[0022] Preferably, the elastic support mechanism further includes:

[0023] Bolts are inserted into the protective cover, which is then attached to the mounting housing by bolts.

[0024] Preferably, the moving mechanism includes:

[0025] A moving iron core, which is slidably engaged with the middle part of the other side of the mounting housing, and the moving iron core has a cavity inside;

[0026] A guide rod, which is slidably disposed on the inner side of the moving iron core;

[0027] A contact spring is installed in a cavity inside the moving iron core and is used to provide elastic support for the guide rod.

[0028] A limiting ring is fixedly installed at one end of the cavity of the moving iron core, and the limiting ring is used to position the end of the contact spring.

[0029] This utility model discloses a high-speed circuit-breaking electromagnet, which has the following beneficial effects:

[0030] This invention places a contact spring inside the moving iron core. On one hand, it connects the moving iron core and the guide rod. Because the contact spring has higher stiffness than the return spring, it ensures a strong connection between the moving iron core and the guide rod. On the other hand, the contact spring's design ensures that after the stationary and moving iron cores are energized and attracted, the contact spring is in a compressed state. This is equivalent to the contact spring being directly connected to the circuit contact point of the guide rod. Through the elastic support of the contact spring, even when the electromagnet is vibrating, it ensures a stable contact and prevents the contact from detaching. This significantly reduces dependence on the power supply current. Simultaneously, the stable contact prevents sparks caused by poor contact, thus increasing the safety performance of the electromagnet. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0033] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the internal front structure of this utility model.

[0035] In the diagram: 1. Mounting mechanism; 11. Mounting housing; 12. Electromagnetic coil; 2. Fixing mechanism; 21. Magnetic yoke; 22. Fixed iron core; 23. Magnetic shielding pad; 3. Elastic support mechanism; 31. Protective cover; 32. Return spring; 33. Bolt; 4. Moving mechanism; 41. Moving iron core; 42. Guide rod; 43. Contact spring; 44. Limiting ring. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0038] This utility model provides, for example Figure 1-3 The high-speed circuit-breaking electromagnet shown includes: a mounting mechanism 1; a fixing mechanism 2, which is mounted on one side of the mounting mechanism 1; an elastic support mechanism 3, which is mounted on the other side of the mounting mechanism 1; and a moving mechanism 4, which is movably coupled to the mounting mechanism 1. The elastic support mechanism 3 is used to elastically support the moving mechanism 4, and the moving mechanism 4 can move relative to the fixing mechanism 2.

[0039] The mounting mechanism 1 includes: a mounting housing 11 with an opening on one side, and a fixing mechanism 2 that cooperates with the opening; an electromagnetic coil 12, which is fitted inside the mounting housing 11. The mounting housing 11 has a grounding terminal. During high-speed operation or electromagnetic induction, the electromagnet may accumulate static electricity. Grounding can promptly release this static charge, preventing electrostatic discharge from harming personnel or equipment. Simultaneously, it prevents accidental energization of the electromagnet's electromagnetic coil 12, fixed iron core 22, moving iron core 41, or mounting housing 11 due to insulation damage or aging. If these components come into contact with a phase wire, the grounding design can quickly conduct the leakage current to the ground, avoiding electric shock accidents upon contact.

[0040] Specifically, the fixing mechanism 2 includes: a magnetic yoke 21, which is fixedly sleeved on the opening on one side of the mounting housing 11; a fixed iron core 22, which is inserted into the middle of the magnetic yoke 21 and slides relative to the moving mechanism 4; and a magnetic isolation pad 23, which is fixedly installed between the magnetic yoke 21 and the fixed iron core 22. The pole shoes of the moving iron core 41 and the fixed iron core 22 are horseshoe-shaped, which increases the electromagnetic holding force and ensures that the hysteresis during the retraction of the moving iron core 41 at the moment the electromagnet is de-energized is very small, thus reducing the influence of hysteresis. Furthermore, to achieve high-speed circuit breaking, the fixed iron core 22 is designed to be small and precise. The addition of the magnetic isolation pad 23 between the magnetic yoke 21 and the fixed iron core 22 increases the gap between them, further reducing the influence of hysteresis on the breaking time. The magnetic isolation pad 23 is used to constrain the magnetic field.

[0041] Specifically, the elastic support mechanism 3 includes: a protective cover 31, which is installed on the other side of the mounting housing 11; a return spring 32, which is disposed inside the protective cover 31; and a bolt 33, which is inserted and installed on the protective cover 31. The protective cover 31 is installed on the mounting housing 11 by the bolt 33. The protective cover 31 facilitates the installation of the return spring 32 and adds a slide to the actuating cavity of the return spring 32, allowing the moving iron core 41 to have space for horizontal movement. This makes the electromagnet's operation more stable and reliable when it is energized and engaged or de-energized and released. On the other hand, the protective cover 31 can limit the working stroke of the moving iron core 41, making the movement of the moving iron core 41 more stable. Through the principle of electromagnetism, when the electromagnetic coil 12 is energized, it can attract the moving iron core 41, so that when the moving iron core 41 retracts into the protective cover 31, it squeezes and deforms the return spring 32. The return spring 32 provides elastic support for the moving iron core 41, so as to restore the moving iron core 41 when the power is off.

[0042] The moving mechanism 4 includes: a moving iron core 41, which slides in conjunction with the middle of the other side of the mounting housing 11, and has a cavity inside; a guide rod 42, which is slidably disposed inside the moving iron core 41; a contact spring 43, which is installed in the cavity inside the moving iron core 41 and provides elastic support for the guide rod 42; and a limiting ring 44, which is fixedly installed at one end of the cavity of the moving iron core 41 and is used to position the end of the contact spring 43 by placing the contact spring 43 inside the moving iron core 41. The cavity serves two purposes: firstly, it connects the moving iron core 41 and the guide rod 42. Because the stiffness of the contact spring 43 is higher than that of the return spring 32, it ensures the connection stiffness between the moving iron core 41 and the guide rod 42. Secondly, the design of the contact spring 43 ensures that after the fixed iron core 22 and the moving iron core 41 are energized and attracted, the contact spring 43 is in a compressed state. This is equivalent to the contact spring 43 being directly connected to the circuit contact of the guide rod 42. Through the elastic support of the contact spring 43, even when the electromagnet is vibrating, it ensures a stable contact and prevents the contact from falling off. This greatly reduces the dependence on the power supply current. Simultaneously, the stable contact prevents sparks from flying out due to poor contact. This design enhances the safety performance of the electromagnet. While ensuring the connection rigidity between the guide rod 42 and the moving iron core 41, the elastic support of the compression spring ensures that once the electromagnet is energized and engaged, the contact spring 43 efficiently achieves stable contact, significantly reducing the current output and dependence on current stability. The limiting ring 44, mounted at the end of the cavity of the moving iron core 41, facilitates the positioning of the contact spring 43, preventing it from detaching from the cavity. The cavity within the moving iron core 41 reduces its mass and facilitates the installation of the contact spring 43, thus reducing its mass, accelerating its action time, and optimizing its output characteristics. It also reduces the hysteresis effect during the rebound stroke of the moving iron core 41.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-speed circuit-breaking electromagnet, characterized in that, include: Installation mechanism (1); A fixing mechanism (2) is installed on one side of the mounting mechanism (1); An elastic support mechanism (3) is installed on the other side of the mounting mechanism (1); The moving mechanism (4) is movable relative to the mounting mechanism (1), and the elastic support mechanism (3) is used to provide elastic support for the moving mechanism (4). The moving mechanism (4) can move relative to the fixed mechanism (2).

2. The high-speed circuit-breaking electromagnet according to claim 1, characterized in that, The installation mechanism (1) includes: The mounting housing (11) has an opening on one side, and the fixing mechanism (2) cooperates with the opening. An electromagnetic coil (12) is fitted inside the mounting housing (11).

3. A high-speed circuit-breaking electromagnet according to claim 1, characterized in that, The fixing mechanism (2) includes: Magnetic yoke (21), the magnetic yoke (21) is fixedly sleeved at the opening on one side of the mounting housing (11); A fixed iron core (22) is inserted into the middle of the magnetic yoke (21) and slides relative to the moving mechanism (4).

4. A high-speed circuit-breaking electromagnet according to claim 3, characterized in that, The fixing mechanism (2) also includes: Magnetic shielding pad (23) is fixedly installed between the magnetic yoke (21) and the fixed iron core (22).

5. A high-speed circuit-breaking electromagnet according to claim 1, characterized in that, The elastic support mechanism (3) includes: A protective cover (31) is mounted on the other side of the mounting housing (11); A reset spring (32) is disposed inside the protective cover (31).

6. A high-speed circuit-breaking electromagnet according to claim 5, characterized in that, The elastic support mechanism (3) also includes: Bolt (33) is inserted into the protective cover (31), and the protective cover (31) is installed on the mounting housing (11) by bolt (33).

7. A high-speed circuit-breaking electromagnet according to claim 1, characterized in that, The moving mechanism (4) includes: The moving iron core (41) is slidably engaged with the middle part of the other side of the mounting housing (11), and the moving iron core (41) has a cavity inside; Guide rod (42), which is slidably disposed on the inner side of the moving iron core (41); A contact spring (43) is installed in the cavity inside the moving iron core (41) and is used to provide elastic support for the guide rod (42). A limiting ring (44) is fixedly installed at one end of the cavity of the moving iron core (41), and the limiting ring (44) is used to position the end of the contact spring (43).

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