Rolling door motor

Abstract

The invention discloses a rolling door motor, and relates to the field of the motor. The rolling door motor comprises a driving motor, a rolling door chuck, a limiting gear, a limiting cam, a mechanical limiting switch and an incremental encoder; a motor output gear arranged on the output shaft of the driving motor is meshed with a chuck outer ring gear arranged in the outer ring of the rolling door chuck; a main shaft gear arranged on the exterior of the central shaft of the rolling door chuck radially is meshed with the limiting gear; the incremental encoder is arranged on the driving motor; the limiting cam is fixedly arranged on the limiting gear; the mechanical limiting switch is arranged on the rolling door chuck; and the limiting cam triggers the mechanical limiting switch when the door body arrives at an upper limit position and / or a lower limit position. According to the rolling door motor disclosed in the invention, an electronic type limiting function is realized through the incremental encoder; soft start and soft stop of the door body are realized while the structure of the rolling door motor is simplified; and meanwhile, at least one group of mechanical limiting switch is maintained for limiting and setting and resetting of the incremental encoder, so that the reliability of the rolling door motor is ensured.

Description

technical field [0001] The invention relates to the field of motors, in particular to a rolling door motor. Background technique [0002] The rolling door motor is used to drive the door body of the electric rolling door to start and stop. The rolling door motor usually includes a limit structure. The limit structure of the rolling door motor is used to control the door body to stop automatically after running to the upper limit and lower limit. [0003] The commonly used rolling door motors usually adopt mechanical limit structure or electronic limit structure: the mechanical limit structure is to set two mechanical limit switches in the rolling door motor, and one corresponding to the two mechanical limit switches respectively. The contact and the door rotate synchronously. When the contact touches the corresponding limit switch, it means that the door moves to the upper limit / lower limit, and the drive motor stops working. Although the structure of the mechanical limit st...

AI Technical Summary

Problems solved by technology

[0003] The commonly used rolling door motors usually adopt mechanical limit structure or electronic limit structure: the mechanical limit structure is to set two mechanical limit switches in the rolling door motor, and one corresponding to the two mechanical limit switches respectively. The contact and the door rotate synchronously. When the contact touches the corresponding limit switch, it means that the door moves to the upper limit / lower limit, and the drive motor stops working. Although the structure of the mechanical limit structure is simple and easy to implement , but because the drive motor cannot identify the upper limit and lower limit in advance, it cannot realize soft stop, resulting in mechanization of the operation process, severe current impact, and affecting the service life of the electric rolling door

The electronic limit structure can solve this shortcoming of the mechanical limit structure. The electronic limit structure is realized by setting an encoder in the rolling door motor, and the upper limit and lower limit are identified in advance through the count value of the encoder. So as to achieve soft start and soft stop, but considering that during the working process of the rolling door motor, the encoder will stop working due to various reasons, such as sudden power failure, sudden separation of the motor clutch, and manual door opening and closing operations, and the encoder will restart It is still necessary to keep the synchronization between the position of the door body and the count value during work. Therefore, the encoder installed in the rolling door motor must be an absolute encoder, but the structure of the absolute encoder is complicated and difficult to implement, and the cost is also high. Not conducive to large-scale promotion

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