CN110310797A - A double-coil structure three-point DC electromagnet - Google Patents

Abstract

The invention relates to a three-point DC electromagnet with a double-coil structure, including a main electromagnet, an auxiliary electromagnet, a guide piece, a connecting piece, a transition plate and a mounting base plate; the main electromagnet and the auxiliary electromagnet are connected through a connecting piece ; The two moving iron cores in the main electromagnet and the auxiliary electromagnet are connected end to end through a guide; The electromagnet is fixed on the installation base plate through two transition plates. In the present invention, only the two moving iron cores of the main electromagnet and the auxiliary electromagnet do linear motion, and the elastic movement of the spring, and there is no undervoltage or loss of voltage in the electromagnet auxiliary control circuit. The secondary control design of the release signal function, the overall structure and working principle is simple, the stability is good, the failure factor is small, and the entire working process is only affected by the circuit of the mechanism, no human control is required, personal safety is guaranteed, and it has high practicality sex.

Description

A double-coil structure three-point DC electromagnet

technical field

The invention relates to an electromagnet, in particular to a three-point DC electromagnet with a double coil structure.

Background technique

The existing three-point electromagnet can achieve basic functions such as charged energy storage, power-off release and manual/electric interlocking. However, in use, it is found that due to the influence of the temperature rise of the electromagnet and the hysteresis, the current electromagnet can only achieve the ability to push the spring mechanism "power off", and cannot achieve the ability to push the spring mechanism under low voltage or undervoltage, and three points The undervoltage or loss of voltage release signal function of the electromagnet auxiliary control circuit needs to be realized by the corresponding functional circuit of the secondary control design, which increases the difficulty of design, and the structure is complex, the failure factors are complicated, and the stability is not easy to control, which brings great harm to the actual use. many hidden dangers.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a secondary control design without an electromagnet auxiliary control loop undervoltage or pressure loss release signal function, the overall structure and working principle is simple, the stability is good, and the failure factor is small. The three-point DC electromagnet with double-coil structure does not require human control and can ensure personal safety.

In order to achieve the above object, the technical solution adopted in the present invention is: a three-point DC electromagnet with a double-coil structure, including a main electromagnet, an auxiliary electromagnet, a guide, a connector, a transition plate and an installation base plate; the main electromagnet It is connected with the auxiliary electromagnet via a connecting piece; the two moving iron cores in the main electromagnet and the auxiliary electromagnet are connected end to end through a guide piece; the main electromagnet and the auxiliary electromagnet are connected through two transitions The board is fixed to the mounting base.

Further, the connecting piece is made of aluminum alloy.

Further, the structure of the main electromagnet and the auxiliary electromagnet is the same; the auxiliary electromagnet includes a housing, an upper end cover, a lower end cover, a wire frame, a magnet wire, a moving iron core, a yoke, a gasket, a spring and a guide rod; the two ends of the housing are provided with an upper end cover and a lower end cover; the housing is provided with a wire rack, and an electromagnetic wire is arranged on the wire rack; the guide rod passes through the upper end cover and the moving iron core located in the electromagnetic wire The front end of the moving iron core is provided with a gasket; 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 arranged 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.

Further, the guide is a lance; the lance is a retractable ring structure.

Further, the moving iron core is made of soft magnetic material; the end of the moving iron core opposite to the upper end cover is provided with a non-conductive magnetic sheet.

Further, the non-conductive magnetic sheet is tapered.

Further, the end of the moving iron core opposite to the upper end cover has a tapered structure.

Further, the front end of the main electromagnet is provided with a screw; the guide rod in the auxiliary electromagnet is provided with a flange self-locking nut and a hexagonal nut pressed against the upper end cover.

Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

The double-coil structure three-point DC electromagnet of the present 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 there is no undervoltage or pressure loss release signal of the electromagnet auxiliary control circuit The secondary control design of the function, the overall structure and working principle are simple, the stability is good, the failure factor is small, and the entire working process is only affected by the circuit of the mechanism, no human control is required, personal safety is guaranteed, and it has high practicability and promotion. value.

Description of drawings

Below in conjunction with accompanying drawing, technical solution of the present invention will be further described:

Accompanying drawing 1 is the three-dimensional structure schematic diagram of the present invention;

Accompanying drawing 2 is the top view of accompanying drawing 1;

Accompanying drawing 3 is the partial sectional view of B-B in accompanying drawing 2;

Among them: main electromagnet 1, auxiliary electromagnet 2, guide piece 3, connecting piece 4, transition plate 5, installation base plate 6, screw rod 7, lead wire 8, shell 10, upper end cover 11, lower end cover 12, wire frame 13 , Electromagnetic wire 14, moving iron core 15, yoke 16, gasket 17, spring 18, guide rod 19, non-conductive magnetic piece 20, flange self-locking nut 21, hex nut 22.

Detailed ways

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

Please refer to the accompanying drawings 1-3, a three-point DC electromagnet with a double-coil structure according to an embodiment of the present invention, including a main electromagnet 1, an auxiliary electromagnet 2, a guide 3, and a power supply (not shown in the figure) , connecting piece 4, transition plate 5 and installation base plate 6; main electromagnet 1 and auxiliary electromagnet 2 are connected via connecting piece 4; It can help reduce the temperature rise of the two electromagnets, and can also help the two electromagnets to be in a well-connected connection state, avoiding the functional stability between the two electromagnets caused by installation errors or structural vibrations.

The two moving iron cores 15 in the main electromagnet 1 and the auxiliary electromagnet 2 are connected end to end by a guide 3, wherein the guide is a lance, and the lance is set as a retractable collar structure, which can be adjusted and stretched. The function of the length; the main electromagnet 1 and the auxiliary electromagnet 2 are fixed on the installation base plate 5 through two transition plates 4 to form a whole.

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 frame 13, an electromagnetic wire 14, a moving iron core 15, and a magnetic yoke 16. Gasket 17, spring 18 and 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 an electromagnetic wire 14 is arranged on the wire rack 13 , the guide rod 19 passes through the upper end cover 11 and is connected to the moving iron core 15 located in the electromagnetic wire 14, and there is no contact between the electromagnetic wire 14 and the moving iron core 15; the front end of the moving iron core 15 is provided with a gasket 17, and the moving iron core The front end of 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 for When the moving iron core moves laterally to the left, the spring 18 is pressed against the lower end cover 12; a yoke 16 is also arranged between the housing 10 and the electromagnetic wire 14, and the yoke 16 plays the role of transmitting magnetic force.

When working, the present invention designs a double electromagnet structure in order to ensure that the resultant force after the main electromagnet releases the instantaneous reverse spring force and overcomes the hysteresis force is large enough under the undervoltage state; the main electromagnet and the auxiliary electromagnet are on The lead wires 8 of the two electromagnets 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 motion; because the product models of the two electromagnets are the same, the basic functions are the same, and the two electromagnets have the same basic functions. The reverse spring force of the first electromagnet is the same, so when the main electromagnet is in the process of undervoltage release, if the resultant force of the spring to overcome the hysteresis force is not enough to knock the mechanism open, the auxiliary electromagnet is connected in parallel with the main electromagnet. At this time, the auxiliary electromagnet is also in the under-voltage release state, and the reverse spring force of the auxiliary electromagnet overcomes the hysteresis and hits the tail of the main electromagnet through the striker to supplement the knock-off force, so as to achieve the mechanism trip. need.

As a further preferred embodiment, the moving iron core is made of soft magnetic material; the opposite end cover of the moving iron core is provided with a tapered non-conductive magnetic piece 20; this is because in general, the electromagnet is to avoid magnetic Due to the influence of hysteresis, the iron core should not only use soft magnetic materials, but also add a thick enough non-magnetic gasket at the root of the iron core, so that after the electromagnet is powered off, the moving iron core can be separated normally. When combined, the electromagnet has sufficient suction force, and generally the non-magnetic gasket will not be too thick.

The non-magnetic gasket in this electromagnet adopts a tapered stacked gasket, which will have a strong rebound force when pressed by the stacked gasket, and because the thickness of the stacked gasket is similar to that of a general non-magnetic gasket, In this way, on the basis of ensuring sufficient strength of the attraction force, the electromagnetic attraction force in the fully engaged state can be reduced as much as possible. The smaller the complete attracting force, the easier it is for the main electromagnet to trip and release under the undervoltage state.

As a further preferred embodiment, in order to increase the impact force at the moment when the mechanism is knocked open after the two electromagnets are released, the magnetic resistance is as small as possible by optimizing the root size of the moving iron core under the condition of constant spring force , The root of the moving iron core is designed to be a tapered structure, that is, the end of the moving iron core opposite to the upper end cover has a tapered structure.

As a further preferred embodiment, the front end of the moving iron core 15 in the main electromagnet 1 is provided with a screw 7, and the guide rod in the auxiliary electromagnet 2 is provided with a flange that is pressed on the upper end cover 11. Lock nut 21 and hex nut 22.

The double-coil structure three-point DC electromagnet of the present 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 has no function of releasing signals for undervoltage or loss of voltage in the electromagnet auxiliary control circuit The secondary control design, the overall structure and working principle is simple, the stability is good, the failure factor is small, and the entire working process is only affected by the circuit of the mechanism, no human control is required, personal safety is guaranteed, and it has high practicality and promotion value. .

The above are only specific application examples of the present invention, and do not constitute any limitation to the protection scope of the present invention. All technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims (8)

1. A double-coil structure three-point DC electromagnet is characterized in that: it includes a main electromagnet, an auxiliary electromagnet, a guide, a connector, a transition plate and an installation base plate; the main electromagnet and the auxiliary electromagnet pass through The connecting piece is connected; the main electromagnet and the two moving iron cores in the auxiliary electromagnet are connected end to end through guide pieces; the main electromagnet and the auxiliary electromagnet are fixed on the installation base plate through two transition plates. 2. The three-point DC electromagnet with double-coil structure according to claim 1, characterized in that: the connecting piece is made of aluminum alloy. 3. The double-coil structure three-point DC electromagnet according to claim 1 is characterized in that: the structure of the main electromagnet and the auxiliary electromagnet is the same; the auxiliary electromagnet includes a housing, an upper end cover, a lower end cover, wire frame, electromagnetic wire, moving iron core, yoke, gasket, spring and guide rod; the two ends of the shell are provided with upper end cap and lower end cap; line; the guide rod passes through the upper end cover and is connected with the moving iron core located in the electromagnetic wire; the front end of the moving iron core is provided with a gasket; the front end of the east iron core passes through the lower end cover, and the two ends of the gasket The end exceeds the moving iron core; a yoke is arranged between the shell and the electromagnetic wire; a spring sleeved on the moving iron core is arranged between the gasket and the lower end cover. 4. The three-point DC electromagnet with double-coil structure according to claim 1, characterized in that: the guide member is a plunger; the plunger is a retractable collar structure. 5. The double-coil structure three-point DC electromagnet according to claim 1, characterized in that: the moving iron core is made of soft magnetic material; the end of the moving iron core opposite to the upper end cover is provided with a non-conductive magnetic sheet. 6 . The three-point DC electromagnet with double coil structure according to claim 5 , wherein the non-conductive magnetic piece is conical. 7 . 7. The three-point DC electromagnet with double-coil structure according to claim 1, characterized in that: the end of the moving iron core opposite to the upper end cover has a tapered structure. 8. The double-coil structure three-point DC electromagnet according to claim 1, characterized in that: the front end of the main electromagnet is provided with a screw rod; Flange self-locking nuts and hexagon nuts on the upper end cover.