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Connecting-rod-free motor with variable oil return pressure and pre-tightening method for oil cylinders and crankshaft of connecting-rod-free motor

An oil return pressure, no connecting rod technology, applied in servo motor components, fluid pressure actuating devices, mechanical equipment, etc., can solve problems such as troublesome spring disassembly, and achieve the effect of reducing weight, increasing rotational speed, and simplifying structure

Inactive Publication Date: 2016-01-13
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the spring is inside the cylinder, this causes troublesome disassembly when replacing the spring

Method used

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  • Connecting-rod-free motor with variable oil return pressure and pre-tightening method for oil cylinders and crankshaft of connecting-rod-free motor
  • Connecting-rod-free motor with variable oil return pressure and pre-tightening method for oil cylinders and crankshaft of connecting-rod-free motor
  • Connecting-rod-free motor with variable oil return pressure and pre-tightening method for oil cylinders and crankshaft of connecting-rod-free motor

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Embodiment

[0023] Such as Figures 1 to 5 Shown: hydraulic motor without connecting rod, mainly composed of eccentric shaft 2, oil cylinder piston 4 and plane oil distribution mechanism 5,6. When the motor is in the initial state, the upper end of the piston 4 is pushed on the spherical seat of the cylinder head 1, and the cylinder body 3 expands and contracts radially after the oil is passed through. The large spring A matched with the gap of the piston hole makes the piston a large guide column for the sliding of the cylinder: the high-pressure oil enters the cylinder piston through the oil inlet through the oil distribution plate 5 and the oil distribution plate 6 through the oil passage, and directly acts on the eccentric shaft 2 Spherical surface and cylinder head 1 Spherical surface, the motor spindle is directly driven by the high-pressure oil column contained in the oil cylinder-piston, the spherical pair between the oil cylinder and the eccentric shaft, the piston and the cylind...

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Abstract

The invention discloses a connecting-rod-free motor with variable oil return pressure and a pre-tightening method for oil cylinders and a crankshaft of the connecting-rod-free motor. A valve assembly is additionally arranged at an oil inlet of each oil cylinder and an oil filling pipe. Each valve assembly comprises a one-way valve A and a one-way valve B. An inlet of each one-way valve A and an outlet of the corresponding one-way valve B are connected with two ports of a three-way valve D. The other port of each three-way valve D is connected with the corresponding oil filling pipe. Two ports of each three-way valve C are connected with an outlet of the corresponding one-way valve A and the oil inlet of the corresponding oil cylinder respectively. The other port of each three-way valve C is connected with an inlet of the corresponding one-way valve B through an overflowing valve E. Under the circumstance that large springs in the oil cylinders are not used, pressure generated by residual pressure in the oil return process is fully used, and separation between the oil cylinders and the crankshaft cannot be caused; oil return pressure set by a feedback device increases along with increasing of the rotation speed of the motor, and therefore the rotation speed of the motor is increased.

Description

technical field [0001] The invention relates to the improvement of a non-connecting rod motor, in particular to a non-connecting rod motor with variable oil return pressure and a pre-tightening method for an oil cylinder and a crankshaft. Background technique [0002] The crankshaft non-connecting rod radial cylinder piston hydraulic motor (hereinafter referred to as the non-connecting rod hydraulic motor) is developed on the basis of the single-acting crankshaft connecting rod radial cylinder piston hydraulic motor. It is a low-speed high-torque motor with a new structure developed in the past ten years. During the working process of the hydraulic motor, the main shaft of the motor is directly driven by the high-pressure oil column contained in the piston of the oil cylinder, and the spherical pair between the oil cylinder and the eccentric shaft, the piston and the cylinder head only acts as a seal, and the sealing surface is tightly attached by the ball. , but when the o...

Claims

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Application Information

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IPC IPC(8): F15B15/06F15B13/02
Inventor 谢小鹏刘鑫卢小辉张中伟叶春浓
Owner SOUTH CHINA UNIV OF TECH
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