An electro-permanent magnet wiring structure, wiring method and excitation coil repair method

Abstract

The present invention discloses an electric permanent magnet wiring structure, wiring method and excitation coil repair method. The wiring structure includes a coil connector, the coil connector includes an insulating shell and a conductive sheet installed in the insulating shell, the insulating shell is provided with a main line connection area for accommodating the main line of the electric permanent magnet and a coil joint area connected to the excitation coil of the electric permanent magnet; one end of the conductive sheet extends to the main line connection area for connecting the main line, and the other end extends to the coil joint area for connecting the wiring terminal of the excitation coil. The electric permanent magnet wiring structure of the present invention has the advantages of being simple and practical, having good insulation performance, having a stable connection effect and being convenient for disassembly and maintenance; the wiring method using the wiring structure and the method for repairing the excitation coil in the electric permanent magnet using the wiring structure when it is damaged both have the advantages of being fast and efficient.

Description

Technical Field

[0001] The present invention relates to the field of electric permanent magnets, and in particular to an electric permanent magnet wiring structure, a wiring method and an excitation coil repair method. Background Art

[0002] There are usually multiple excitation coils inside the permanent magnet. Each coil is connected to the main line in parallel or series, and then connected to the permanent magnet controller through the main line. Due to the wide application range of permanent magnets, they are inevitably used in some humid and rainy places. Once the insulation of the excitation coil is not enough, or the connector between the excitation coil and the main line fails, leakage occurs, etc., it will directly cause the permanent magnet to fail or even damage the entire permanent magnet.

[0003] The existing wiring steps for the excitation coil and the main line are usually to first remove the insulation layers of the two main lines, screw the two ends of the excitation coil onto the two main lines respectively, and then use a soldering iron to fix the joint. After fixation, the outer layer of the joint is treated with an insulating wrap. This wiring process is very complicated and requires high standards from the operator. In addition, when there are many excitation coils in the electro-permanent magnet, each coil needs to perform this operation, which is a huge workload. In addition, the inside of the electro-permanent magnet is generally epoxy-potted. When disassembling and repairing, the epoxy sealing layer needs to be destroyed. The process is cumbersome and labor-intensive, which is not conducive to repairs at the work site. Returning the machine to the factory for repair will slow down the construction progress. Summary of the invention

[0004] The problem to be solved by the present invention is to provide a simple and practical electric permanent magnet wiring structure with good insulation performance, stable connection effect and convenient disassembly and maintenance in view of the problems existing in the prior art; and also provide a method for quickly and efficiently connecting using the wiring structure; and a method for repairing the excitation coil of the electric permanent magnet using the wiring structure when it is damaged.

[0005] In order to solve the above technical problems, the technical solution proposed by the present invention is:

[0006] An electro-permanent magnet wiring structure includes a coil connector, wherein the coil connector includes an insulating shell and a conductive sheet installed in the insulating shell, wherein the insulating shell is provided with a main line connection area for accommodating a main line of the electro-permanent magnet and a coil joint area connected to an excitation coil of the electro-permanent magnet; one end of the conductive sheet extends to the main line connection area for connecting the main line, and the other end extends to the coil joint area for connecting a wiring terminal of the excitation coil.

[0007] As a further improvement of the above-mentioned electro-permanent magnet wiring structure:

[0008] The main line connection area is configured as a strip-shaped groove for accommodating the main line.

[0009] The groove surface of the strip-shaped groove is an open arc surface, and the opening width of the strip-shaped groove is smaller than the outer diameter of the main line.

[0010] The conductive sheet is buried inside the insulating shell, and one end of the conductive sheet extends to the main line connection area at the bottom of the strip groove for piercing connection with the main line, and the other end of the conductive sheet extends to the coil connector area from the side wall of the insulating shell.

[0011] The end of the conductive sheet extending from the bottom of the strip-shaped groove is arranged as a sharpened plug-in portion, and the groove depth of the strip-shaped groove is greater than the height of the plug-in portion.

[0012] The main line includes two conductors respectively connected to the positive electrode and the negative electrode of the power supply, and the main line connection area includes two strip-shaped grooves for accommodating the two conductors respectively, and a conductive sheet is respectively arranged on each strip-shaped groove.

[0013] The two strip grooves are arranged in parallel and side by side, and the coil joint area is arranged on the side wall of the insulating shell perpendicular to the strip grooves. The other two side walls of the insulating shell are arranged in parallel with the two strip grooves, and the two side walls are respectively provided with positive and reverse marks.

[0014] A method for wiring using the above-mentioned electro-permanent magnet wiring structure comprises the following steps:

[0015] Connect the terminals of the field coil to the coil connector area of ​​the coil connector;

[0016] Lay out the main line and pull it to the main line connection area of ​​the coil connector;

[0017] Align the strip groove on the insulating shell with the main line, and press the main line to clamp it into the strip groove; at the same time, the end of the conductive sheet in the strip groove extending out of the bottom of the groove is automatically inserted into the main line to connect the conduction excitation coil and the main line.

[0018] A method for repairing an excitation coil using the above-mentioned electro-permanent magnet wiring structure comprises the following steps:

[0019] Connect the terminals of the field coil to the coil connector area of ​​the coil connector;

[0020] Lay out the main line and pull it to the main line connection area of ​​the coil connector;

[0021] Align the strip groove on the insulating housing with the main line, and press the main line to clamp it into the strip groove; at the same time, the end of the conductive sheet in the strip groove extending from the bottom of the groove is automatically inserted into the main line, connecting the conduction excitation coil and the main line;

[0022] When a certain excitation coil is damaged, cut off the power supply of the main line; disassemble the magnetic pole cover of the permanent magnet, and remove the damaged excitation coil and the coil connector fixedly connected to it;

[0023] Install a new field coil and coil connector, and replace the pole cover to complete the repair.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] The present invention provides an electric permanent magnet wiring structure, in which the main line and the excitation coil are connected through a coil connector, the coil connector includes an insulating shell and a conductive sheet installed in the insulating shell, the insulating shell is provided with a main line connection area for accommodating the main line of the electric permanent magnet and a coil joint area connected to the excitation coil of the electric permanent magnet; one end of the conductive sheet extends to the main line connection area for connecting the main line, and the other end extends to the coil joint area for connecting the wiring terminal of the excitation coil. When assembling the electric permanent magnet, it is only necessary to arrange the main line first, and then align the coil connector with the main line and clamp it, and the conductive sheet can automatically conduct the excitation coil and the main line, omitting many processes such as wire drawing, wire welding and insulation treatment in the traditional wiring method, and the wiring method and efficiency are improved several times, and the professional requirements for the operator are lower. Secondly, this wiring method makes the conductive part where the excitation coil and the main line are connected extremely small, and is completely enclosed by the insulating shell and the external insulation layer of the main line, so no live part leaks out, and the insulation performance is better. In addition, the excitation coil of this structure is easier to replace after it is damaged. When one of the excitation coils is damaged, it is only necessary to remove the pole cover, replace the excitation coil and then put the cover back on to repair it, making maintenance simpler and more efficient. There is no need to return to the factory for repair, which improves the progress of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the external structure of the coil connector in the electro-permanent magnet wiring structure of the present invention;

[0027] Figure 2 It is a structural schematic diagram of a conductive sheet in the electro-permanent magnet wiring structure of the present invention;

[0028] Figure 3 It is an exploded view of the electropermanent magnet wiring structure of the present invention.

[0029] Legend: 1. Main line; 2. Excitation coil; 21. Wiring terminal; 3. Coil connector; 31. Insulating shell; 32. Conductive sheet; 321. Plug-in part. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and meticulously below in conjunction with the accompanying drawings and preferred embodiments of the specification, but the protection scope of the present invention is not limited to the following specific embodiments.

[0031] Example:

[0032] like Figures 1 to 3 As shown, the electric permanent magnet wiring structure of this embodiment includes a coil connector 3, the coil connector 3 includes an insulating shell 31 and a conductive sheet 32 ​​installed in the insulating shell 31, the insulating shell 31 is provided with a main line connection area for accommodating the main line 1 of the electric permanent magnet and a coil connector area connected to the excitation coil 2 of the electric permanent magnet; one end of the conductive sheet 32 ​​extends to the main line connection area for connecting the main line 1, and the other end extends to the coil connector area for connecting the terminal 21 of the excitation coil 2. When assembling the electric permanent magnet, it is only necessary to arrange the main line 1 first, and then align the main line connection area in the coil connector 3 with the main line 1 and clamp it, and the conductive sheet 32 ​​can automatically conduct the main line 1 and the excitation coil 2, omitting many processes such as wire drawing, wire welding and insulation treatment in the traditional wiring method, and the wiring method and efficiency are improved several times, and the professional requirements for operators are lower. Secondly, this wiring method makes the conductive part where the excitation coil 2 and the main line 1 are connected extremely small, and is completely enclosed by the insulating shell 31 and the outer insulating layer of the main line 1, so there is no leakage of any live part, and the insulation performance is better. In addition, the excitation coil 2 of this structure is easier to replace after it is damaged in the later stage. When a certain excitation coil 2 is damaged, it can be repaired by simply disassembling the pole cover, replacing the excitation coil 2, and then covering the cover. There is no need to return to the factory for repair, which improves the progress of the project.

[0033] In this embodiment, the main line connection area is configured as a strip groove for accommodating the main line 1, which is easier to fit and clamp with the main line 1, and the groove has a stronger sealing performance for the conductive part connecting the main line 1 and the excitation coil 2; the groove surface of the strip groove is an open arc surface, and the opening width of the strip groove is smaller than the outer diameter of the main line 1. This setting method not only makes the connection between the main line 1 and the conductive sheet 32 ​​tighter and prevents the occurrence of false connection, but also effectively prevents the main line 1 from escaping from the groove due to vibration and the like, thereby ensuring the connection strength.

[0034] In this embodiment, the conductive sheet 32 ​​is buried inside the insulating shell 31, and one end of the conductive sheet 32 ​​extends from the bottom of the strip groove to the main line connection area for piercing connection with the main line 1, and the other end of the conductive sheet 32 ​​extends from the side wall of the insulating shell 31 to the coil joint area for fixed connection with the excitation coil 2.

[0035] In this embodiment, the end of the conductive sheet 32 ​​extending from the bottom of the strip groove is set as a sharpened plug-in portion 321, so that the end of the conductive sheet 32 ​​can more easily penetrate the outer insulation layer of the main line 1, thereby improving the installation efficiency; the groove depth of the strip groove is greater than the height of the plug-in portion 321, thereby preventing the plug-in portion 321 from penetrating the main line 1 when clamped, causing damage to the main line 1 or leakage, etc.

[0036] In this embodiment, the main line 1 includes two conductors connected to the positive and negative poles of the power supply respectively, and the main line connection area includes two strip grooves for accommodating the two conductors respectively, and each strip groove is provided with a conductive sheet 32. This wiring method makes each excitation coil 2 connected in parallel, avoiding the failure of all the connected excitation coils 2 to perform the charging and demagnetization actions due to the damage of one excitation coil 2 in the series connection structure; and when one excitation coil 2 is damaged, it only needs to be simply disassembled and replaced, making maintenance simpler and more efficient.

[0037] Traditional electric permanent magnet excitation coils 2 require enameled wires of different wire diameters due to differences in size, power and series-parallel mode. In the embodiments of this article, all excitation coils 2 use the same enameled wire, the same winding method, and are connected in parallel. When configuring electric permanent magnets of different sizes, only different numbers of excitation coils 2 need to be selected, making the production of the excitation coils 2 single, which is very suitable for standardized and large-scale production.

[0038] In this embodiment, the two strip grooves are arranged in parallel and side by side, and the coil connector area is arranged on the side wall of the insulating housing 31 perpendicular to the strip grooves. The other two side walls of the insulating housing 31 are arranged in parallel with the two strip grooves, and the two side walls are respectively provided with positive and negative markings. The positive and negative markings in this embodiment are as follows: Figure 1 As shown, the upper part of the insulating shell 31 is printed with an N logo, and the lower part is also printed with an S logo for easy identification. When the polarity of the excitation coil 2 needs to be changed, the coil can be turned 180° and inserted.

[0039] This embodiment also provides a method for quickly and efficiently performing wiring using the above-mentioned electro-permanent magnet wiring structure, comprising the following steps:

[0040] Connect the connection terminal 21 of the excitation coil 2 to the coil connector area of ​​the coil connector 3;

[0041] Lay out the main line 1 and pull it to the main line connection area of ​​the coil connector 3;

[0042] Align the strip groove on the insulating shell 31 with the main line 1, and press the main line 1 to clamp it into the strip groove; at the same time, the end of the conductive sheet 32 ​​in the strip groove extending out of the bottom of the groove is automatically inserted into the main line 1, connecting the conduction excitation coil 2 and the main line 1.

[0043] This embodiment also provides a method for repairing an excitation coil, comprising the following steps:

[0044] Connect the connection terminal 21 of the excitation coil 2 to the coil connector area of ​​the coil connector 3;

[0045] Lay out the main line 1 and pull it to the main line connection area of ​​the coil connector 3;

[0046] Align the strip groove on the insulating housing 31 with the main line 1, and press the main line 1 to clamp it into the strip groove; at the same time, the end of the conductive sheet 32 ​​in the strip groove extending out of the bottom of the groove is automatically inserted into the main line 1, connecting the excitation coil 2 and the main line 1;

[0047] When a certain excitation coil 2 is damaged, cut off the power supply of the main line 1; disassemble the magnetic pole cover of the permanent magnet, and remove the damaged excitation coil 2 and the coil connector 3 fixedly connected thereto;

[0048] Install a new excitation coil 2 and coil connector 3, and cover the pole cover to complete the repair.

[0049] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, improvements and changes obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An electro-permanent magnet connection structure, comprising a coil connector (3), characterized in that: The coil connector (3) comprises an insulating shell (31) and a conductive sheet (32) installed in the insulating shell (31); the insulating shell (31) is provided with a main line connection area for accommodating a main line (1) of the electropermanent magnet and a coil connector area for connecting to an excitation coil (2) of the electropermanent magnet; one end of the conductive sheet (32) extends to the main line connection area for connecting to the main line (1), and the other end extends to the coil connector area for connecting to a connection terminal (21) of the excitation coil (2); The main line connection area is configured as a strip-shaped groove for accommodating the main line (1); The groove surface of the strip-shaped groove is an open arc surface, and the opening width of the strip-shaped groove is smaller than the outer diameter of the main line (1); The conductive sheet (32) is embedded in the insulating housing (31), and one end of the conductive sheet (32) extends from the bottom of the strip groove to the main line connection area so as to be pierced and connected to the main line (1), and the other end of the conductive sheet (32) extends from the side wall of the insulating housing (31) to the coil connector area.

2. The electro-permanent magnet connection structure according to claim 1, characterized in that: The end of the conductive sheet (32) extending from the bottom of the strip-shaped groove is arranged as a sharpened plug-in portion (321), and the groove depth of the strip-shaped groove is greater than the height of the plug-in portion (321).

3. The electro-permanent magnet connection structure according to claim 1 or 2, characterized in that: The main line (1) comprises two conducting wires respectively connected to the positive electrode and the negative electrode of the power supply, and the main line connection area comprises two strip-shaped grooves respectively accommodating the two conducting wires, and each strip-shaped groove is provided with a conductive sheet (32).

4. The electro-permanent magnet connection structure according to claim 3, characterized in that: The two strip-shaped grooves are arranged in parallel and side by side, and the coil joint area is arranged on a side wall of the insulating shell (31) perpendicular to the strip-shaped grooves. The other two side walls of the insulating shell (31) are arranged in parallel with the two strip-shaped grooves, and positive and reverse markings are respectively provided on the two side walls.

5. A method for wiring using the electro-permanent magnet wiring structure according to any one of claims 1 to 4, characterized in that: The following steps are involved: Connecting the connection terminal (21) of the excitation coil (2) to the coil connector area of ​​the coil connector (3); Arrange the main line (1) and pull it to the main line connection area of ​​the coil connector (3); The strip groove on the insulating housing (31) is aligned with the main line (1), and the main line (1) is pressed to clamp it into the strip groove; at the same time, the end of the conductive sheet (32) in the strip groove extending out of the bottom of the groove is automatically inserted into the main line (1), connecting the conducting excitation coil (2) and the main line (1).

6. A method for repairing an excitation coil using the electric permanent magnet wiring structure according to any one of claims 1 to 4, characterized in that: The following steps are involved: Connecting the connection terminal (21) of the excitation coil (2) to the coil connector area of ​​the coil connector (3); Arrange the main line (1) and pull it to the main line connection area of ​​the coil connector (3); The strip groove on the insulating housing (31) is aligned with the main line (1), and the main line (1) is pressed to be clamped into the strip groove; at the same time, the end of the conductive sheet (32) in the strip groove extending out of the bottom of the groove is automatically inserted into the main line (1), connecting the conducting excitation coil (2) and the main line (1); When a certain excitation coil (2) is damaged, the power supply of the main line (1) is cut off; the magnetic pole cover of the permanent magnet is disassembled, and the damaged excitation coil (2) and the coil connector (3) fixedly connected thereto are disassembled; Install a new excitation coil (2) and coil connector (3), and replace the pole cover to complete the repair.

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