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Coding disk of alternating-current induction motor

A technology of induction motors and code discs, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of high material cost and labor cost, unsuitable for mass production, complicated processing procedures, etc., and achieve good product consistency, The effect of light weight and low material cost

Active Publication Date: 2013-04-03
NINGBO RUYI
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the code discs of AC induction motors (as shown in Figure 3) are all made of cast steel or round steel for cutting and tooth milling. The processing procedures are complex, the processing time is long, the cost of materials and labor are high, and it is not suitable for mass production.

Method used

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  • Coding disk of alternating-current induction motor
  • Coding disk of alternating-current induction motor
  • Coding disk of alternating-current induction motor

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] As shown in the figure, an AC induction motor encoder disk is installed on the motor shaft 3 of the AC induction motor 2, and cooperates with the external encoder 4 installed on the motor 2 shell. When the motor 2 rotates, the encoder 5 The required pulse signal can be output; the AC induction motor code disc includes a code disc main body 1, and the code disc main body 1 is a disc-shaped ferrule structure formed by stamping a thin steel plate at one time. There is a flanged mounting hole 11 formed in the center, which is connected with the motor shaft 3; one end of the encoder disc main body 1 is open, and the other end is folded toward the center and inwards in a stepped shape. An annular groove 13 is formed between the folded surfaces; a plurality of long slots 12 are evenly provided on the outer peripheral surface of the code disc m...

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Abstract

The invention discloses a coding disk of an alternating current induction motor. The coding disk comprises a main coding disk body, wherein a mounting hole connected with a rotating shaft of the motor is formed in the center of the main coding disk body. The coding disk is characterized in that the main coding disk body is of a disc ferrule structure molded once by sheet steel in a stamping manner, a plurality of long slotted holes are formed in one side of the outer circumference surface of the main coding disk body, and a mounting hole with a flange is formed in the center of the main coding disk body. As being molded once by the sheet steel in the stamping manner, the coding disk has a more reasonable structure and is energy-saving and environment-friendly, and the labor cost is also reduced. In addition, original cast steel or round steel is replaced by the sheet steel, so that the material cost is reduced by over 70%, and the coding disk is easy to process, good in consistency and suitable for mass production. The coding disk is simple and reasonable in structure, low in material cost, light in weight and easy to process, and can reduce inertia and noises of a motor rotor in running so as to effectively improve the performance of the motor.

Description

technical field [0001] The invention relates to the field of motors, in particular to an AC induction motor code disc that outputs pulse signals through an external encoder. Background technique [0002] As a new technology, AC induction motor has been widely used in industrial vehicles such as electric pallet trucks and electric forklifts in the modern logistics industry, and is playing a huge role. [0003] With the continuous advancement of motor speed control technology, electric industrial vehicles have developed from the earliest resistance speed control, DC series excitation motor speed control, DC separately excited motor speed control to AC induction motor speed control. [0004] The most prominent advantage of the AC induction motor is that there is no carbon brush, and its characteristics are: high efficiency, small size, light weight, simple structure, maintenance-free, good heat dissipation, high protection level and long service life. However, in order to cont...

Claims

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Application Information

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IPC IPC(8): H02K11/00H02K11/21
Inventor 傅敏
Owner NINGBO RUYI
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