Planet differential actuator

Abstract

The invention relates to a planet differential starter, used in the oil field pump. It comprises an output axle, a belt wheel, a bank, and a planet element. It is characterized in that: the bank comprises a transmission device, a planet device, a clutch device and a control device. Said transmission device comprises a gear axial sleeve, a output axle, a bearing, a sliding support, a inner tooth ring, a transmission hub and guide bolt. Said control device comprises a control axle, a handle, a connecting block, a support post, a revolving ring and a brake claw. Said clutch device comprises a spring core axle, a spring base, a spring and a compressing ring. And the planet device comprises a planet wheel support, a planet wheel, a claw wheel, and a planet wheel axle. The invention uses differential start, therefore, the motor with small power can be used, and it can save electricity, cost and non-working power consumption, with easy maintenance and long service life.

Description

technical field [0001] The invention belongs to the field of starters for oil field pumping units and similar equipment, in particular to a planetary differential starter. Background technique [0002] The current starting devices of pumping units and similar machinery generally have a working mode of starting with heavy load and running with light load, that is, using a high-power motor and a large-capacity transformer for power supply, and the actual power consumption of the motor during normal operation is only the rated power of the motor. About one-third of the capacity, which makes the power factor of the transformer and the motor very low, the reactive power loss increases, the power supply quality of the grid is also reduced, the waste of electric energy is high, and the production cost is high. Some solutions have been used, such as adding a fixed pulley deceleration device for field application, but the application range is limited due to changes in the parameters ...

AI Technical Summary

Problems solved by technology

[0004] 1. Built-in pulley, it is inconvenient to replace the belt, and it is inconvenient to maintain and maintain

[0005] 2. Adopt non-lubricated dry operation, low reliability and short service life

[0006] 3. The floating key control lever used is too thin to ensure the reliable operation of the mechanism (the reliability coefficient is only 1.03). Due to the limited structural space, it cannot be changed.

[0007] 4. The floating key and the lever are hinged at one point, which cannot guarantee parallel lifting during operation, and when the floating key is tilted up and starts to contact at one point, the key often loses the function of transmitting power due to poor stress

[0008] 5. Twelve sets of bearings are used in the whole device, the structure is complicated, the processing precision is high, the manufacturing is difficult, and the reliability is reduced

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