Gear box with function of positive and negative rotation

Abstract

The invention relates to a gear box with a function of positive and negative rotation. The gear box comprises non-circular gears, an input shaft, a driven solid shaft, a driven hollow shaft, a planet carrier, planetary gears, sun wheels, an output shaft, a box body and the like. A full-mechanical transmission structure which is jointly composed of the non-circular gears and a planetary gear train composed of circular gears is adopted. When the gear box works, movement is introduced through the input shaft, and is output through the output shaft if being engaged to the gears of the gear box. When the input is in a continuous single direction, the output of the gear box is in two directions of positive and negative rotation; the angular velocities and the angular accelerations of positive and negative rotation as well as the angles of the positive and negative rotation of the output shaft can be changed by changing the shape of a pitch curve of the non-circular gear or the gear compatibility of the non-circular gear. The planetary gear trains are of symmetrical structures. The gear box is low in price, convenient to maintain and suitable for long-term work in severe environments such as high power, high load and the like.

Description

technical field [0001] The invention belongs to the technical field of machinery, and in particular relates to a gear box with forward and reverse functions. Background technique [0002] Forward and reverse rotation in mechanical operation is a relatively common state, which is usually realized by electronic control switching or servo mechanism. For example, the most common method is to change the running direction of the motor through a switch; It is realized in a mechanical way, but it is also inseparable from the control mechanism. [0003] It is feasible in some occasions to achieve forward and reverse rotation through electronic control switching or servo mechanism; but it is difficult to do so in some occasions, such as in some occasions with high power, heavy load, and forward and reverse rotation all year round. [0004] For a high-power motor, it is almost unimaginable to keep it in a working condition that requires frequent starting and reversing for a long time,...

AI Technical Summary

Problems solved by technology

[0006] Therefore, it is difficult to meet the requirements of high power, heavy load and long life according to the existing electronically controlled or mechanical forward and reverse equipment or devices.

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