Nutation hydraulic motor

Abstract

The invention provides a nutation hydraulic motor, and belongs to the field of mechanical and hydraulic transmission. The nutation hydraulic motor comprises an output nutation outer bevel gear shaft, an input nutation inner bevel gear shaft, a nutation servo hydraulic driving system and a high-pressure oil station. A nutation speed reducer is composed of the nutation outer bevel gear shaft and the input nutation inner bevel gear shaft; large-load and large-speed-ratio gear transmission is achieved through few parts in a small space; and the input nutation inner bevel gear shaft is connected with a servo hydraulic cylinder through spherical hinges evenly distributed on a certain reference circle on the back side, and the angle change of the input nutation inner bevel gear shaft and the servo hydraulic cylinder is adapted during nutation motion. The nutation hydraulic motor has the advantages of being high in power density, compact in structure, small in occupied area and low in environment requirement, can share a high-pressure oil source of a use site, and has high use value in the fields of hoisting transportation, constructional engineering, metallurgy, geological drilling, ship machinery, tunnel equipment, petrochemical engineering and the like.

Description

technical field [0001] The invention relates to a nutating hydraulic motor, which is characterized by high power density and is especially suitable for applications requiring low speed and high torque, such as lifting and transportation equipment, construction engineering machinery, heavy metallurgical machinery, geological drilling equipment, etc., belonging to machinery and hydraulic transmission field. Background technique [0002] In the fields of lifting transportation, construction engineering, metallurgy, geological drilling, ship machinery, tunnel equipment, petrochemical industry, etc., the equipment generally has a large load and low speed, and the equipment has requirements for low speed and high torque for the driving device. [0003] Hydraulic motors have the characteristics of high power density, large output torque, and long life. They are currently widely used in the field of heavy equipment, but their rated operating pressure and displacement are limited by ...

AI Technical Summary

Problems solved by technology

[0004] The patent of US Patent No. "US5309041A", which applies nutating gear transmission to AC motors, has the characteristics of high torque and low torque, and is suitable for industries such as industrial robots. Because it involves AC frequency conversion and other equipment, its use places There are requirements, and it does not have good application value for heavy equipment such as lifting transportation and construction engineering

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