Worm – planetary reducer

Abstract

The invention discloses a worm-planet reducer. The worm-planet reducer comprises a hollow reducer box body. An inner gear ring and an output shaft bracket are sleeved with the reducer box body. The output shaft bracket comprises an output shaft and a shaft disc connected with the output shaft. An even number of planetary gear fixing shafts are arranged at the outer rim of the shaft disc. Each planetary gear fixing shaft is provided with a worm-tooth small planet and a worm-tooth large planet. Multiple worm toothed rod wheel fixing brackets are arranged at the inner rim of the shaft disc. A worm toothed rod shaft is arranged between every two worm toothed rod wheel fixing brackets. Each worm toothed rod shaft is sleeved with a worm toothed rod wheel of a columnar structure. A central helical gear is arranged in the center of the shaft disc and provided with an input shaft. The input shaft is sleeved with a sealing plate. The reducer is based on transmission of gears-worms in combination with planetary gears, compact in structure, small in weight, small in size and capable of being applied to multiple occasions; the reducer is subjected to three-level rotation speed variation, and large-torque output is achieved; and the reducer is high in energy efficiency transmission, good in practicability and worthy of popularizing widely.

Description

technical field [0001] The invention relates to a reducer, in particular to a worm-planetary reducer. Background technique [0002] The reducer plays the role of matching speed and transmitting torque between the prime mover and the working machine or the actuator, and is widely used in modern machinery. According to different purposes, it can be divided into two categories: general reducer and special reducer. According to the number of transmission stages, it can be divided into single-stage and multi-stage reducer. According to the layout of the transmission, it can be divided into expansion type, shunt type and simultaneous progress Shaft reducers can be divided into cylindrical gear reducers, bevel gear reducers, worm reducers, gear-worm reducers, linear balance reducers, and planetary reducers according to the shape of the gear wheel. The reducer is a relatively precise independent component, which is generally used in transmission equipment with low speed and high to...

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Problems solved by technology

[0003] The planetary gear reducer has the advantages of small return clearance, high precision, long service life, etc. At the same time, the output torque can be made very large. Due to structural limitations, single-stage transmission stages are generally used, and due to the large number of planets, As a result, the mass-to-output torque ratio of the planetary gear reducer is not high. Generally, for an output torque of 10,000 Nm, the weight of the reducer is as high as 500 kg. To increase the output torque, the weight of the planetary gear reducer must be increased volume, which makes it inconvenient to use and restricts

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