Hypocycloid RV transmission device

Abstract

The invention discloses a hypocycloid RV transmission device comprising a shell, a power input shaft and a power output shaft. The power input shaft and the power output shaft are coaxially arranged and are in running fit with the shell; a support disc, a driven gear, a pin tooth installation disk and an output disk are axially juxtaposed in the shell in sequence; and the shell is provided with a hypocycloid gear. The hypocycloid RV transmission device retains the advantage of the RV transmission and improves and overcomes the disadvantages of the RV transmission. A pinwheel is adopted by the hypocycloid RV transmission device to do planetary motion, and only one pin tooth installation disk provided with a lightening hole is used by the hypocycloid RV transmission device, thus the weight of the hypocycloid RV transmission device is effectively reduced. Two ends of the pinwheel are respectively arranged on the pin tooth installation disk and the output disk, thus the vibration of the hypocycloid RV transmission device is effectively decreased, and the dynamic performance of the hypocycloid RV transmission device is improved. The hypocycloid RV transmission device adopts a crankshaft and the pinwheel to output simultaneously, thus the stressing condition of a rotating arm bearing is improved, and the bearing capacity of the rotating arm bearing is enhanced. Due to the appropriate tooth choose and pinwheel diameter increase, the bearing capacity of the rotating arm bearing can be further enhanced. The invention has simple and compact structure and low manufacturing cost and is convenient to maintain.

Description

technical field [0001] The invention relates to a reduction transmission mechanism, in particular to a hypocycloid RV transmission device. Background technique [0002] The transmission methods used in the reduction transmission mainly include ordinary cylindrical gear transmission, planetary gear transmission, worm gear transmission, cycloidal pinwheel transmission, harmonic transmission and movable tooth transmission, etc. RV transmission is developed on the basis of cycloidal pinwheel transmission A kind of transmission, the RV transmission device has the advantages of large reduction ratio, small size, light weight, and precise transmission. It is mainly used for transmission equipment with low speed and high torque output, especially in the field of robots. [0003] The existing RV transmissions generally have the following disadvantages: ①Two cycloidal wheels are usually used for planetary motion. In order to meet the meshing, the number of teeth can only be an odd num...

AI Technical Summary

Problems solved by technology

[0003] The existing RV transmissions generally have the following disadvantages: ①Two cycloidal wheels are usually used for planetary motion. In order to meet the meshing, the number of teeth can only be an odd number, which limits the selection of the second-stage transmission ratio, and it is often difficult to meet the requirements during design In addition, the two cycloidal wheels can achieve static balance, but cannot achieve dynamic balance, affecting its dynamic performance, and it is easy to generate vibration and noise during high-speed operation; at the same time, using two cycloidal wheels to improve When the carrying capacity is increased, the weight of the reducer also increases significantly

②The pin wheel of the RV transmission device is fixed on the housing, and the pin wheel sleeve structure is adopted, which tends to cause tooth surface glueing when transmitting large power, resulting in a large loss of efficiency

③RV transmission is the output of motion and power by the crankshaft. The bearing of the rotating arm bears a large force, which affects the life. Generally, the RV transmission has a larger transmission ratio than other transmission methods, and the diameter of the crankshaft is correspondingly larger, which affects the load-carrying capacity of the entire mechanism.

④Common RV transmission output mechanism has a fan-shaped hole structure, which is difficult to process

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