Non-circular gear planetary gear train hydraulic motor

A technology of planetary gear trains and non-circular gears, which is applied in the field of hydraulic motors, the basic hydraulic components of the machinery industry, can solve the problems of no instantaneous motion law, many design parameter variables, and few degrees of freedom.

Inactive Publication Date: 2014-09-24
BEIJING FENGYUAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Why are so many units researching such an institution without success? This is mainly due to the complex movement law of the non-circular gear train structure. Compared with the general cylindrical gear meshing transmission, there are more variables in the design parameters and less degrees of freedom. There is a lack of scientific observation and analysis methods for the law of motion and actual phenomena. There is no scientific mathematical model or ready-made empirical formula to follow in the law, and there are some illusions and subjectivity in cognition
At the same time, there are considerable difficulties in the design and manufacture of non-circular gears, the contradiction between volumetric efficiency and mechanical efficiency, it is difficult to grasp the best choice, and there is a big gap between theoretical design and actual manufacturing

Method used

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  • Non-circular gear planetary gear train hydraulic motor

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Embodiment Construction

[0017] Now one of the simplest embodiments of the present invention is described as follows in conjunction with the accompanying drawings:

[0018] figure 1 It represents a hydraulic motor with the simplest non-circular gear train structure consisting of a sun gear 1 with an eccentric circle as the rotor, a peripheral wheel 2 with internal teeth with an ellipse as the stator, and three planetary cylindrical gears 3 .

[0019] The eccentric circle radius of the sun gear R1=200mm, the eccentric distance e=80mm, the number of teeth Z1=100;

[0020] The radius of the planetary cylindrical gear R0 = 90mm, the number of planetary gear teeth Z0 = 45, the modulus m = 4;

[0021] Its peripheral wheel with external teeth its elliptic pitch curve 4 The short diameter R2min=300mm, the long diameter R2max=460mm, the number of teeth Z2=200, and the pressure angle is 20°;

[0022] The positions of the four distribution holes 4 on the distribution plate are evenly and symmetrically distrib...

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Abstract

The invention relates to a non-circular gear planetary gear train hydraulic motor, comprising a circumferential wheel with inner teeth, a sun gear with outer teeth, a planetary cylindrical gear, a distributor, a front cover, a rear cover, etc. The hydraulic motor is characterized by the positions of flow distribution holes, shapes of tooth profiles, the tooth number of each gear and the design structure of a non-circular gear planetary gear train. Through displacement design and discretization processing technology, a non-circular gear train can be designed at will, so demands of the non-circular gear planetary gear train hydraulic motor for actual technical characteristic parameters can be met. The non-circular gear planetary gear train hydraulic motor has wide application prospects in fields of engineering machinery, heavy machinery, ships, machine tools, aviation and spaceflight.

Description

technical field [0001] The invention belongs to the technical field of hydraulic motors of hydraulic basic components in the mechanical industry, and relates to a low-speed and high-torque hydraulic motor of a non-circular gear planetary gear train. Background technique [0002] The non-circular gear planetary gear system low-speed high-torque hydraulic motor involved in the present invention is a new type of hydraulic motor product that is integrated, miniaturized, high-efficiency, low-noise, anti-pollution, and energy-saving, and is listed as a national key new product in my country. Product development projects. [0003] In the domestic and foreign prior art prior to the present invention, relatively common low-speed high-torque hydraulic motors are mainly plunger type and cycloidal type hydraulic motors, and most of them are high-speed and medium-speed hydraulic motors. Both need to be used after deceleration by cylindrical gear reducer. The plunger-type low-speed hydra...

Claims

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Application Information

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IPC IPC(8): F03C2/08
Inventor 潘辉
Owner BEIJING FENGYUAN TECH
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