Reinforcing ring structure, preparation process and application thereof

A preparation process and reinforcement ring technology, applied in the shape/style/structure of winding insulation, epoxy resin coating, electromechanical devices, etc., can solve the problem of difficulty in reaching the extreme output torque of starters, poor insulation performance of steel reinforcement rings, steel Insufficient strength of the permanent reinforcement ring and the armature coil, etc., to achieve the effects of large axial peeling force, good insulation performance, rigidity and strength

Pending Publication Date: 2021-07-27
芜湖兴申汽车部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the structure of the traditional reinforcement ring is a steel ring. Although the reinforcement ring of this structure has good strength and good rigidity, it has the following disadvantages: First, the combination of the steel reinforcement ring and the armature coil is not strong enough, often Because the rotating speed of the rotor is too high, the reinforcing ring is separated from the armature coil. In order to improve the bonding strength with the armature coil, the inner diameter of the reinforcing ring is reduced to make the reinforcing ring tightly cover the armature coil, but the armature coil will be formed The outer diameter of the armature coil shrinks inward, making it difficult to achieve the ultimate output torque of the starter; second, the insulation performance of the steel reinforcement ring is poor. If the insulating paint of the armature coil is scratched and damaged, the leakage current will not be reduced, and it will also give The normal operation of the rotor poses a safety risk

Method used

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  • Reinforcing ring structure, preparation process and application thereof

Examples

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Effect test

preparation example Construction

[0036] The preparation process of the above-mentioned reinforcement ring structure comprises the following steps:

[0037] 1) Configure insulating layer coating material: the coating material includes the following raw materials in parts by weight: 3-5 parts of polyester resin, 1.5-2.5 parts of polyester imide resin, 0.8-1.2 parts of polyurethane, 0.8-1.2 parts of epoxy resin 0.1 to 0.5 parts of curing agent and 1 to 1.5 parts of diluent, wherein the curing agent is a modified hydrazide latent curing agent, including hydrazide compounds and epoxy compounds, wherein the molar ratio of hydrazide groups to epoxy groups It is 1:0.5-2.5, and the diluent is set to active epoxy resin diluent.

[0038]2) Stretching, blanking and cutting of seamless steel pipes inside and outside: use broaching equipment to position the 65Mn seamless steel pipes with an inner diameter of 47.8-47.9mm and a thickness of 1.2-1.35mm, and then use broaching equipment to position the two ends of the seamless...

Embodiment 1

[0045] The preparation process of the reinforcement ring structure is as follows:

[0046] 1) Prepare insulating layer coating material: mix 3 parts of polyester resin, 2 parts of polyester imide resin, 1 part of polyurethane, 1 part of epoxy resin, 0.25 part of curing agent and 1 part of thinner to obtain the coating material.

[0047] 2) Stretching, blanking and cutting of seamless steel pipes inside and outside cold work: use broaching equipment to position the 65Mn seamless steel pipes with an inner diameter of 47.8-47.9mm and a thickness of 1.2-1.35mm, and then perform cold work inside and outside Stretching, the tensile force is 10000N, the tensile speed is 80mm / Min, the stretching time is 40-60 minutes, after stretching to an inner diameter of 48.0-48.05mm and a thickness of 1.0-1.05mm, the material is cut into multiple pieces 500mm steel pipe section.

[0048] 3) Heat treatment of the cut steel pipe section: heat the cut steel pipe section to 820-840°C, cool it in oil...

Embodiment 2

[0055] The difference between the preparation process of the reinforcing ring structure and that of Example 1 lies in the proportioning of the coating materials, that is, 4 parts of polyester resin, 2 parts of polyester imide resin, 1 part of polyurethane, 1 part of epoxy resin, and 0.25 parts of curing agent Mix with 1 part thinner to obtain coating material. Coat the inner wall of the steel pipe section with the coating material in the above ratio until the thickness reaches 2.5 mm, and put the steel pipe section coated with the coating material into a drying oven at a temperature of 125-145 ° C for 30-45 minutes; The required reinforcement ring is obtained after post-processing the steel pipe section.

[0056] After passing the performance test, it is obtained that the radial destructive force that the above-mentioned reinforcement ring can withstand is 2800N, the insulation performance is a withstand voltage of 3350V, the withstand temperature is 275°C, and the axial peeli...

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Abstract

The invention discloses a reinforcing ring structure, and a preparation process and application thereof, and belongs to the technical field of reinforcing ring structures. The reinforcing ring structure sleeves the two ends of an armature coil and comprises a rigid layer and an insulating layer, a phosphating and saponifying layer is arranged outside the rigid layer, the insulating layer is coated at the inner side of the phosphating and saponifying layer, and the insulating layer and the outer insulating paint of the armature coil are mutually permeated and fused. The reinforcing ring structure has the advantages that the reinforcing ring structure has certain strength, meanwhile, the portion, making contact with the armature coil, of the reinforcing ring structure has insulativity and good heat resistance, the fusion degree of the reinforcing ring structure and insulating paint outside the armature coil is high, the reliability and working stability of a starter rotor are improved, and the service life of the starter rotor is prolonged.

Description

technical field [0001] The invention relates to the technical field of reinforcement ring structures, in particular to a reinforcement ring structure, preparation process and application. Background technique [0002] The starter motor in the starter or engine is composed of a stator magnetic field, a rotor armature and a commutator. In order to increase the torque, a multi-pole magnetic field is used. There are usually 4 magnetic fields. When the current passes through the armature coil, the entire coil will receive a torque. And turn. Due to the high rotational speed of the rotor, the mechanical strength of the armature coil located outside both ends of the rotor core is difficult to overcome the centrifugal force, and it tends to deform outwards and bulge, thus touching the excitation coil on the stator. When the insulating varnish between the coil and the armature coil is turned on due to scratch damage, the starter will be burned. In order to ensure the reliability of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/46H02K3/32C09D167/00C09D175/04C09D179/08C09D163/00C09D5/25
CPCC08L2205/035C09D5/00C09D167/00H02K3/32H02K3/46C08L75/04C08L79/08C08L63/00
Inventor 赵培和戴永霞王刚
Owner 芜湖兴申汽车部件有限公司
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