A high-temperature resistant electromagnetic pin puller

Abstract

This utility model discloses a high-temperature resistant electromagnetic pin puller, relating to the field of electromagnetic pin puller technology. It includes a housing, an electromagnetic drive assembly disposed within the housing, and a pin. The electromagnetic drive assembly comprises a metal frame with an insulating layer on its surface. A compression spring is located at one end of the metal frame, and an axially movable pin is located at the other end. One end of the pin extends to the outside of the housing and is radially limited by a partition. One end of the compression spring is connected to the pin, and the other end is connected to an end cap. An electromagnetic coil is wound around the outer periphery of the metal frame, and the lead-out end of the electromagnetic coil is connected to an electronic wire. The housing is made of a high-permeability material, and the end cap is made of a magnetizable material. When the electronic wire is energized, the magnetic field generated by the electromagnetic coil synchronously magnetizes the pin and the end cap, forming opposite magnetic poles, driving the pin to move axially against the spring force of the compression spring. This utility model achieves stable operation in high-temperature environments and solves the problem of high-temperature failure in traditional plastic-framed pin pullers.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic pin puller technology, and more specifically to a high-temperature resistant electromagnetic pin puller. Background Technology

[0002] In existing technologies, traditional electromagnetic pin pullers typically use plastic materials as their frame. However, plastic materials have significant drawbacks in high-temperature environments; their stable operating time is short, and they are prone to failure due to high temperatures, failing to meet the needs of some special applications requiring high-temperature resistance. For example, in industrial high-temperature environments and aerospace fields, the reliability issues of traditional electromagnetic pin pullers are particularly prominent, necessitating a high-temperature resistant and stable electromagnetic pin puller to solve this problem. Utility Model Content

[0003] The purpose of this invention is to solve the technical problems of existing electromagnetic pin pullers being prone to failure in high-temperature environments and having short stable working time. This invention provides a high-temperature resistant electromagnetic pin puller, which significantly improves the reliability and stability of the electromagnetic pin puller in high-temperature environments through innovative structural design and material selection.

[0004] The technical solution adopted by this utility model is as follows: A high-temperature resistant electromagnetic pin puller includes a housing, an electromagnetic drive assembly disposed within the housing, and a pin. The electromagnetic drive assembly includes a metal frame with an insulating layer on its surface. A compression spring is provided at one end of the metal frame, and an axially movable pin is provided at the other end. One end of the pin extends to the outside of the housing and is radially limited by a partition. One end of the compression spring is connected to the pin, and the other end is connected to an end cap. An electromagnetic coil is wound around the outer periphery of the metal frame, and the lead end of the electromagnetic coil is connected to an electronic wire. The housing is made of a high-permeability material, and the end cap is made of a magnetizable material. When the electronic wire is energized, the magnetic field generated by the electromagnetic coil synchronously magnetizes the pin and the end cap to form opposite magnetic poles, driving the pin to move axially against the spring force of the compression spring.

[0005] Preferably, the electromagnetic coil is wound with high-temperature resistant insulated enameled wire.

[0006] Preferably, the compression spring is made of high-temperature resistant alloy spring steel.

[0007] Preferably, an axial heat dissipation channel is formed between the metal frame and the outer casing.

[0008] Preferably, the magnetization directions of the pull pin and the end cap are arranged opposite to each other along the axial direction to generate axial magnetic attraction.

[0009] Preferably, the metal frame is made of high-strength aluminum alloy.

[0010] Preferably, the pull pin passes through the extension of the partition and engages with the inner hole of the partition to achieve radial limiting.

[0011] Preferably, the electronic wire is directly connected to the lead-out terminal of the electromagnetic coil. Preferably, the electronic wire is made of polytetrafluoroethylene (PTFE).

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0013] This invention utilizes a metal frame with special treatment to enhance the material's high-temperature resistance, strength, and hardness, ensuring the frame's insulation and withstand voltage rating. The high thermal conductivity of the metal frame, combined with a rational structural design, enables it to withstand heat while accelerating heat dissipation. Combined with a high-temperature resistant coil, PTFE high-temperature electronic leads, and a high-permeability shell, the electromagnetic conversion efficiency is improved, significantly enhancing the reliability of the electromagnetic pin puller in high-temperature environments. After rigorous testing, this product can operate stably for over 200 seconds at temperatures up to 160°C, far exceeding similar products and effectively solving the pain points of traditional electromagnetic pin pullers in high-temperature environments. Attached Figure Description

[0014] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0017] Figure 3 This is a cross-sectional structural schematic diagram of the present invention;

[0018] The components in the diagram are labeled as follows: 1-outer shell, 2-partition plate, 3-end cap, 4-electronic wire, 5-metal frame, 6-electromagnetic coil, 7-compression spring, 8-pull pin. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] In one embodiment of this utility model, such as Figure 1-3 As shown, this embodiment provides a high-temperature resistant electromagnetic pin puller, including a housing 1, an electromagnetic drive assembly disposed within the housing 1, and a pin puller 8. The electromagnetic drive assembly includes a metal frame 5, the surface of which has an insulating layer. One end of the metal frame 5 is provided with a compression spring 7, and the other end is provided with an axially movable pin puller 8. One end of the pin puller 8 extends to the outside of the housing 1 and is radially limited by a partition 2. One end of the compression spring 7 is connected to the pin puller 8, and the other end is connected to an end cap 3. An electromagnetic coil 6 is wound around the outer periphery of the metal frame 5, and the lead end of the electromagnetic coil 6 is connected to an electronic wire 4. The housing 1 is made of a high magnetic permeability material, and the end cap 3 is made of a magnetizable material. When the electronic wire 4 is energized, the magnetic field generated by the electromagnetic coil 6 synchronously magnetizes the pin puller 8 and the end cap 3 to form opposite magnetic poles, driving the pin puller 8 to move axially against the elastic force of the compression spring 7.

[0022] Specifically, this utility model mainly consists of a shell 1, a partition 2, an end cap 3, an electronic wire 4, a metal frame 5, an electromagnetic coil 6, a compression spring 7, and a pull pin 8. The shell 1 is made of high-permeability electrical pure iron, possessing excellent magnetic conductivity and effectively improving electromagnetic conversion efficiency. A metal frame 5 is installed inside the shell 1. The metal frame 5 is made of a specific high-strength, high-thermal-conductivity aluminum alloy material, which has excellent high-temperature strength and hardness, maintaining stable structural performance under high-temperature environments. To ensure the insulation withstand voltage rating of the metal frame 5, it undergoes a special low-temperature hard anodizing treatment, forming a dense oxide film on the frame surface. This film serves both as insulation and further enhances the frame's corrosion resistance and high-temperature resistance. A compression spring 7 is installed at one end of the metal frame 5, and a pull pin 8 is installed at the other end. One end of the pull pin 8 extends out of the shell 1, and the partition 2 radially limits the pull pin 8, ensuring that the pull pin 8 maintains a stable trajectory during movement and does not deviate radially. One end of the compression spring 7 is connected to the pull pin 8, and the other end is connected to the end cap 3. The end cap 3 serves to fix the compression spring 7, enabling it to stably provide a restoring force during operation. An electromagnetic coil 6 is wound around the outer periphery of the metal frame 5. This electromagnetic coil 6 is a high-temperature resistant coil, capable of operating normally in high-temperature environments without being damaged by heat. An electronic wire 4 is connected to the lead end of the electromagnetic coil 6. The electronic wire 4 is made of polytetrafluoroethylene (PTFE) high-temperature electronic lead wire, possessing excellent high-temperature resistance and ensuring stable current transmission in high-temperature environments. The electronic wire 4 is connected to an external power source, providing operating current to the electromagnetic coil 6. When the external power source supplies power to the electromagnetic coil 6 through the electronic wire 4, a current is generated in the electromagnetic coil 6, thereby generating a stable magnetic field. This magnetic field acts simultaneously on the pull pin 8 and the end cap 3, magnetizing them with opposite magnetic properties, thus creating a magnetic attraction between the pull pin 8 and the end cap 3. When the magnetic attraction force exceeds the spring force of the compression spring 7, the pull pin 8 overcomes the spring force and moves downward, thus realizing the action of the pull pin 8. When the power is cut off, the magnetic field of the electromagnetic coil 6 disappears, and the pull pin 8 moves upward under the restoring force of the compression spring 7, returning to its initial position. Because the aluminum alloy material used in the metal frame 5 has high thermal conductivity, combined with its reasonable structural design, it can effectively dissipate the heat generated during operation, allowing the entire electromagnetic pull pin 8 device to maintain a low temperature in high-temperature environments, thereby ensuring the normal operation of each component. Actual testing shows that the electromagnetic pull pin 8 device of this invention can operate stably for more than 200 seconds in a high-temperature environment of 160℃, meeting the requirements for use in high-temperature environments and demonstrating significant economic benefits and practical value.

[0023] In another embodiment of this utility model, the electromagnetic coil 6 is wound with high-temperature resistant insulated enameled wire.

[0024] In another embodiment of this utility model, the compression spring 7 is made of high-temperature resistant alloy spring steel.

[0025] In another embodiment of the present invention, an axial heat dissipation channel is formed between the metal frame 5 and the outer shell 1.

[0026] In another embodiment of this utility model, the magnetization directions of the pull pin 8 and the end cap 3 are arranged opposite to each other along the axial direction to generate axial magnetic attraction.

[0027] In another embodiment of this utility model, the metal frame 5 is made of high-strength aluminum alloy.

[0028] In another embodiment of this utility model, the pull pin 8 passes through the extension of the partition 2 and is fitted with the inner hole of the partition 2 to achieve radial limiting.

[0029] In another embodiment of this invention, the electronic wire 4 is directly connected to the lead-out terminal of the electromagnetic coil 6. Preferably, the electronic wire 4 is made of polytetrafluoroethylene (PTFE).

[0030] The working principle of this invention is as follows: When the electronic wire 4 is connected to a DC voltage, the current passes through the high-temperature resistant electromagnetic coil 6, generating a stable magnetic field. During this process, a metal frame, after special treatment, enhances its high-temperature resistance and hardness, ensuring that the frame can stably support the electromagnetic coil 6 even in high-temperature environments. Simultaneously, its high thermal conductivity, combined with a reasonable structural design, can quickly dissipate the heat generated by the coil's operation, preventing a decrease in magnetic field stability due to high temperatures. This magnetic field simultaneously magnetizes the pull pin 8 and the end cap 3. Thanks to the high permeability of the outer shell, the electromagnetic conversion efficiency is significantly improved, resulting in a more favorable magnetic opposition effect between the two parts, thus generating a stronger and more stable magnetic attraction. Under the action of magnetic attraction, the pull pin 8 moves downward against the spring force of the compression spring 7, realizing the action of the pull pin 8. Due to the high-temperature resistance of each component, the generation and action of this magnetic attraction remain stable and reliable even in high-temperature environments. When the power is cut off, the magnetic field of the electromagnetic coil 6 disappears, and the pull pin 8 moves upward under the restoring force of the compression spring 7, returning to its initial position. During this power-off reset process, the insulation withstand voltage rating of the metal frame is guaranteed, preventing insulation failure due to high temperatures. After rigorous testing, this product can operate stably for over 200 seconds in high-temperature environments up to 160℃, far exceeding similar products. This effectively solves the problem of traditional electromagnetic pull pin devices using plastic frames having short stable operating times and being prone to failure due to high temperatures.

[0031] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made under the concept of this utility model using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A high-temperature resistant electromagnetic pin puller, comprising a housing (1), an electromagnetic drive assembly disposed within the housing (1), and a pin puller (8), characterized in that: The electromagnetic drive assembly includes a metal frame (5) with an insulating layer on its surface; a compression spring (7) is provided at one end of the metal frame (5), and an axially movable pull pin (8) is provided at the other end. One end of the pull pin (8) extends to the outside of the outer shell (1) and is radially limited by a partition (2); one end of the compression spring (7) is connected to the pull pin (8), and the other end is connected to an end cap (3); an electromagnetic coil (6) is wound around the outer periphery of the metal frame (5), and the lead end of the electromagnetic coil (6) is connected to an electronic wire (4). The outer shell (1) is made of a high magnetic permeability material, and the end cap (3) is made of a magnetizable material; When the electronic wire (4) is energized, the magnetic field generated by the electromagnetic coil (6) synchronously magnetizes the pull pin (8) and the end cap (3) to form opposite magnetic poles, driving the pull pin (8) to move axially against the elastic force of the compression spring (7).

2. The high temperature resistant electromagnetic pin puller of claim 1, wherein: The electromagnetic coil (6) is wound with high-temperature resistant insulated enameled wire.

3. The high temperature resistant electromagnetic pin puller of claim 1, wherein: The compression spring (7) is made of high-temperature alloy spring steel.

4. The high temperature resistant electromagnetic pin puller of claim 1, wherein: An axial heat dissipation channel is formed between the metal frame (5) and the outer shell (1).

5. The high temperature resistant electromagnetic pin puller of claim 1, wherein: The magnetization directions of the pull pin (8) and the end cap (3) are arranged opposite each other along the axial direction.

6. The high temperature resistant electromagnetic pin puller of claim 1, wherein: The metal frame (5) is made of high-strength aluminum alloy.

7. The high temperature resistant electromagnetic pin puller of claim 1, wherein: The pull pin (8) passes through the extension of the partition (2) and engages with the inner hole of the partition (2) to achieve radial positioning.

8. The high temperature resistant electromagnetic pin puller of claim 1, wherein: The electronic wire (4) is directly connected to the lead-out end of the electromagnetic coil (6).

9. The high temperature resistant electromagnetic pin puller of claim 1, wherein: The electronic wire is made of polytetrafluoroethylene (PTFE).

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