An adjustable crankshaft for rv reducer

Abstract

The invention discloses an adjustable crankshaft for an RV speed reducer, which comprises a first shaft body used for transmission connection with a cycloid wheel, a second shaft body used for transmission connection with the cycloid wheel, and a second shaft body used for transmission connection with an input shaft. A connected adjustment assembly, the adjustment assembly is used to reduce the difficulty of assembly between the cycloidal wheel and the first shaft body and the second shaft body, the first shaft body and the second shaft body are connected in a detachable manner through the adjustment assembly, Moreover, the first shaft body and the second shaft body can rotate relatively freely, and the center line of the first shaft body and the center line of the second shaft body are located on different straight lines. The invention can help to achieve the purpose of reducing the phase error between the center of the cycloidal gear teeth and the hole position of the crankshaft, reduce the difficulty of assembling the crankshaft and the cycloidal wheel, improve the stress on the crankshaft and prolong the service life of the crankshaft , It also helps to reduce the processing difficulty and manufacturing cost of the cycloidal wheel.

Description

technical field [0001] The invention relates to a mechanical technology, in particular to an adjustable crankshaft for an RV speed reducer. Background technique [0002] RV transmission is a new type of transmission with the characteristics of small size, light weight, large transmission ratio range, high fatigue strength, good precision retention, and stable transmission. It is evolved from the principle of cycloidal pinwheel. Because of its good transmission performance, it is widely used in high-precision robot joints and high-precision transmission under heavy load conditions, so it has received extensive attention from related industries at home and abroad. [0003] The components of RV reducer: crankshaft, planetary carrier, input shaft, output shaft, planetary gear, cycloidal gear, pin gear housing and other parts. As the key transmission part of the RV reducer, the cycloid wheel has a direct impact on the transmission performance of the whole machine, especially the...

AI Technical Summary

Problems solved by technology

[0005] 1. The stress of the traditional crankshaft is affected by the phase deviation between the center of the cycloidal gear teeth and the center of the crankshaft hole;

[0006] 2. Because the two eccentric parts of the traditional crankshaft are rigidly connected, it is very difficult to control the phase of the 180° symmetrical distribution of the two eccentric parts of the crankshaft, resulting in more difficult processing and higher manufacturing costs;

[0007] 3. Due to the eccentric phase error of the traditional crankshaft, the influence of the eccentric phase error between the center of the cycloidal wheel teeth and the position of the crankshaft hole, the assembly difficulty of the crankshaft and the cycloidal wheel has increased, and the traditional crankshaft and the hole position of the crankshaft Contact stress during assembly, which affects the service life of conventional crankshafts

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