A double coil structure three-way DC electromagnet

Abstract

The invention relates to a three-way direct current electromagnet with a double coil structure, comprising a main electromagnet, an auxiliary electromagnet, a guide, a connector, a transition plate and a mounting base plate; the main electromagnet and the auxiliary electromagnet are connected via the connector; the two moving iron cores in the main electromagnet and the auxiliary electromagnet are connected head to tail through the guide; the lead wires in the main electromagnet and the auxiliary electromagnet are connected in parallel to a power supply, and the main electromagnet and the auxiliary electromagnet are fixed on the mounting base plate through two transition plates. The invention only has the two moving iron cores of the main electromagnet and the auxiliary electromagnet to perform linear motion, and the elastic motion of the spring, and does not have a secondary control design of the undervoltage or loss of pressure release signal function of the electromagnet auxiliary control circuit. The overall structure has a simple working principle, good stability, and few failure factors. In addition, the entire working process is only affected by the circuit of the mechanism, and does not require human control, thereby ensuring personal safety and having high practicality.

Description

Technical Field

[0001] The invention relates to an electromagnet, in particular to a three-way direct current electromagnet with a double-coil structure. Background Art

[0002] The existing three-stage electromagnet can achieve basic functions such as live energy storage, power-off release, and manual / electric interlocking. However, it was found in use that due to the influence of electromagnet temperature rise and hysteresis, the current electromagnet can only achieve the ability to "power off" to push the spring mechanism, and cannot achieve the ability to push the spring mechanism at low voltage or undervoltage. In addition, the undervoltage or loss of pressure release signal function of the three-stage electromagnet auxiliary control circuit needs to be realized by the corresponding functional circuit of the secondary control design, which increases the design difficulty, and the structure is complex, the failure factors are complex, and the stability performance is difficult to control, which brings many hidden dangers to actual use. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a secondary control design without the undervoltage or loss of pressure release signal function of the electromagnet auxiliary control circuit. The overall structure has a simple working principle, good stability, few failure factors, no need for human control, and a double-coil structure three-point DC electromagnet that can ensure personal safety.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a double-coil structure three-divided DC electromagnet, including a main electromagnet, an auxiliary electromagnet, a guide, a connecting piece, a transition plate and a mounting base plate; the main electromagnet and the auxiliary electromagnet are connected via a connecting piece; the two moving iron cores in the main electromagnet and the auxiliary electromagnet are connected head to tail through a guide piece; the main electromagnet and the auxiliary electromagnet are fixed to the mounting base plate through two transition plates.

[0005] Furthermore, the connecting piece is made of alloy aluminum.

[0006] Furthermore, the main electromagnet and the auxiliary electromagnet have the same structure; the auxiliary electromagnet comprises a shell, an upper end cover, a lower end cover, a wire rack, an electromagnetic wire, a moving iron core, a yoke, a gasket, a spring and a guide rod; an upper end cover and a lower end cover are provided at both ends of the shell; a wire rack is provided in the shell, and an electromagnetic wire is provided on the wire rack; the guide rod passes through the upper end cover and is connected to the moving iron core located in the electromagnetic wire; a gasket is provided at the front end of the moving iron core; the front end of the east iron core passes through the lower end cover, and the two ends of the gasket exceed the moving iron core; a yoke is provided between the shell and the electromagnetic wire; a spring mounted on the moving iron core is provided between the gasket and the lower end cover.

[0007] Furthermore, the guide member is a striker; the striker is a retractable ring structure.

[0008] Furthermore, the moving iron core is made of soft magnetic material; and a non-conductive magnetic sheet is provided at one end of the moving iron core opposite to the upper end cover.

[0009] Furthermore, the non-conductive sheet is conical.

[0010] Furthermore, one end of the moving iron core relative to the upper end cover is in a conical structure.

[0011] Furthermore, a screw is provided at the front end of the main electromagnet; and a flange self-locking nut and a hexagonal nut pressed on the upper end cover are provided on the guide rod in the auxiliary electromagnet.

[0012] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0013] The double-coil structure of the present invention is divided into three DC electromagnets, and only the two moving iron cores of the main electromagnet and the auxiliary electromagnet perform linear motion, as well as the elastic motion of the spring. There is no secondary control design of the electromagnet auxiliary control circuit undervoltage or loss of pressure release signal function. The overall structure has a simple working principle, good stability, few failure factors, and the entire working process is only affected by the circuit of the mechanism, without the need for human control, thus ensuring personal safety, and having high practicality and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The technical solution of the present invention is further described below in conjunction with the accompanying drawings:

[0015] Attached Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Attached Figure 2 For attachment Figure 1 A top view of

[0017] Attached Figure 3 For attachment Figure 2 A partial cross-sectional view of the middle BB;

[0018] Among them: main electromagnet 1, auxiliary electromagnet 2, guide part 3, connecting part 4, transition plate 5, mounting base plate 6, screw 7, lead wire 8, shell 10, upper end cover 11, lower end cover 12, wire rack 13, electromagnetic wire 14, moving iron core 15, yoke 16, gasket 17, spring 18, guide rod 19, non-conductive electromagnetic sheet 20, flange self-locking nut 21, hexagonal nut 22. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] Please refer to the attached Figure 1-3A double-coil structure three-way DC electromagnet described in an embodiment of the present invention includes a main electromagnet 1, an auxiliary electromagnet 2, a guide member 3, a power supply (not shown in the figure), a connector 4, a transition plate 5 and a mounting base plate 6; the main electromagnet 1 and the auxiliary electromagnet 2 are connected via the connector 4; in this embodiment, the connector 4 is made of alloy aluminum with sufficient strength, which can not only help reduce the temperature rise of the two electromagnets themselves, but also help the two electromagnets to be in a well-connected state, thereby avoiding functional stability between the two electromagnets due to installation errors or structural vibrations.

[0021] The two moving iron cores 15 in the main electromagnet 1 and the auxiliary electromagnet 2 are connected head to tail through a guide member 3, wherein the guide member is a striker rod, and the striker rod is configured as a retractable ring structure, so that the function of adjusting the telescopic length can be achieved; the main electromagnet 1 and the auxiliary electromagnet 2 are fixed on the mounting base plate 5 through two transition plates 4 to form a whole.

[0022] Specifically, the main electromagnet 1 and the auxiliary electromagnet 2 have the same structure; the auxiliary electromagnet 2 includes a housing 10, an upper end cover 11, a lower end cover 12, a wire rack 13, an electromagnetic wire 14, a moving iron core 15, a yoke 16, a gasket 17, a spring 18 and a guide rod 19; the two ends of the housing 10 are fixed by the upper end cover 11 and the lower end cover 12; a wire rack 13 is arranged inside the housing 10, and the electromagnetic wire 14 is arranged on the wire rack 13, and the guide rod 19 passes through the upper end cover 11 and the moving iron core 15 located in the electromagnetic wire 14. The core 15 is connected, and the electromagnetic wire 14 does not contact the moving iron core 15; a gasket 17 is provided at the front end of the moving iron core 15, and the front end of the moving iron core 15 passes through the lower end cover 12, and the two ends of the gasket 17 exceed the moving iron core 15, and a spring 18 sleeved on the moving iron core 15 is provided between the gasket 17 and the lower end cover 12, and the gasket 17 is used to press the spring 18 against the lower end cover 12 when the moving iron core moves horizontally to the left; a yoke 16 is also provided between the housing 10 and the electromagnetic wire 14, and the yoke 16 plays a role in transmitting magnetic force.

[0023] During operation, in order to ensure that the resultant force of the reverse spring force overcoming the hysteresis force at the moment of release of the main electromagnet is large enough under the undervoltage state, the present invention designs a dual electromagnet structure; the lead wires 8 on the main electromagnet and the auxiliary electromagnet are connected in parallel to the power supply; the two moving iron cores 15 on the main electromagnet and the auxiliary electromagnet are connected end to end in the direction of movement; since the product models of the two electromagnets are the same, the basic functions are the same, and the reverse spring forces of the two electromagnets are also the same. In this way, when the main electromagnet is in the process of undervoltage release, if the resultant force of the spring overcoming the hysteresis force is not enough to knock the mechanism open, the auxiliary electromagnet is in parallel with the main electromagnet, and the auxiliary electromagnet is also in the undervoltage release state at this time. Similarly, the reverse spring force of the auxiliary electromagnet overcomes the hysteresis and hits the tail of the main electromagnet through the impact rod to supplement the knocking force, thereby meeting the requirement of mechanism tripping.

[0024] As a further preferred embodiment, the moving iron core is made of soft magnetic material; a conical non-magnetic sheet 20 is provided at one end of the moving iron core opposite to the upper end cover; this is because under normal circumstances, in order to avoid the influence of hysteresis, the electromagnet not only uses soft magnetic material for the iron core, but also adds a sufficiently thick non-magnetic gasket at the root of the iron core, so that the moving iron core can be normally detached after the electromagnet is powered off. In order to ensure that the electromagnet has sufficient attraction force when it is normally attracted, the non-magnetic gasket is generally not too thick.

[0025] The non-magnetic gasket in this electromagnet is a conical stacked gasket. When the stacked gasket is pressed, there will be a strong rebound force. Since the thickness of the stacked gasket is similar to that of the general non-magnetic gasket, it can ensure sufficient strength of the attraction force while minimizing the electromagnetic attraction force in the fully attracted state. The smaller the full attraction force, the easier it is for the main electromagnet to trip and release in the under-voltage state.

[0026] As a further preferred embodiment, in order to increase the impact force of the two electromagnets after they are released and to make the impact mechanism open sufficiently large at the moment, the root size of the moving iron core is optimized to minimize the magnetic resistance while keeping the spring force unchanged. The root of the moving iron core is designed to be a conical structure, that is, one end of the moving iron core relative to the upper end cover is a conical structure.

[0027] As a further preferred embodiment, a screw rod 7 is provided at the front end of the moving iron core 15 in the main electromagnet 1 , and a flange self-locking nut 21 and a hexagonal nut 22 pressed against the upper end cover 11 are provided on the guide rod in the auxiliary electromagnet 2 .

[0028] The double-coil structure of the present invention is divided into three DC electromagnets, in which only the two moving iron cores of the main electromagnet and the auxiliary electromagnet perform linear motion, as well as the elastic motion of the spring. There is no secondary control design for the undervoltage or loss-of-pressure release signal function of the electromagnet auxiliary control circuit. The overall structure has a simple working principle, good stability, and few failure factors. In addition, the entire working process is only affected by the circuit of the mechanism, and no human control is required, thus ensuring personal safety. The structure has high practicality and promotion value.

[0029] The above are only specific application examples of the present invention and do not constitute any limitation on the protection scope of the present invention. Any technical solution formed by equivalent transformation or equivalent replacement shall fall within the protection scope of the present invention.

Claims

1. A double coil structure three-way DC electromagnet, Features: It includes a main electromagnet, an auxiliary electromagnet, a guide, a connecting piece, a transition plate and a mounting base plate; the main electromagnet and the auxiliary electromagnet are connected via a connecting piece; the two moving iron cores in the main electromagnet and the auxiliary electromagnet are connected head to tail through a guide piece; the main electromagnet and the auxiliary electromagnet are fixed on the mounting base plate through two transition plates; the material of the connecting piece is alloy aluminum; the main electromagnet and the auxiliary electromagnet have the same structure; the auxiliary electromagnet includes a shell, an upper end cover, a lower end cover, a wire rack, an electromagnetic wire, a moving iron core, a yoke, a gasket, a spring and a guide rod; upper end covers and lower end covers are provided at both ends of the shell; a wire rack is provided in the shell, and an electromagnetic wire is provided on the wire rack; the guide rod passes through the upper end cover and is connected to the moving iron core located in the electromagnetic wire; a gasket is provided at the front end of the moving iron core; the front end of the moving iron core passes through the lower end cover, and the two ends of the gasket exceed the moving iron core; a yoke is provided between the shell and the electromagnetic wire; a spring sleeved on the moving iron core is provided between the gasket and the lower end cover.

2. The double coil structure three-divided DC electromagnet according to claim 1, Features: The guide member is a striker rod; the striker rod is a retractable ring structure.

3. The double coil structure three-divided DC electromagnet according to claim 1, Features: The moving iron core is made of soft magnetic material; a non-conductive magnetic sheet is provided at one end of the moving iron core opposite to the upper end cover.

4. The double coil structure three-way DC electromagnet according to claim 3, Features: The non-conductive electromagnetic sheet is in a cone shape.

5. The double coil structure three-way DC electromagnet according to claim 1, Features: One end of the moving iron core relative to the upper end cover is in a conical structure.

6. The double coil structure three-way DC electromagnet according to claim 1, Features: The front end of the main electromagnet is provided with a screw rod; the guide rod in the auxiliary electromagnet is provided with a flange self-locking nut and a hexagonal nut pressed on the upper end cover.

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