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Double degree of freedom hydraulic cylinder

A degree of freedom, hydraulic cylinder technology, applied in the field of hydraulic cylinders, can solve the problem of incomplete removal of pollutants on the surface of the guardrail, and achieve the effect of improving the cleaning effect

Active Publication Date: 2016-02-03
HANGZHOU TAIPU AUTOMOBILE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the drum rotates with a single degree of freedom, the textiles on the outer wall of the drum and the guardrail also rub against each other with a single degree of freedom. This single degree of freedom friction will lead to incomplete removal of pollutants on the surface of the guardrail.

Method used

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] The dual-degree-of-freedom hydraulic cylinder includes: a piston rod, a cylinder body, and an end cover; it is characterized in that: the piston rod is connected to a piston, and the piston rod is connected to a hydraulic motor through a shaft sleeve, and the shaft sleeve does not restrict the piston Axial sliding of the rod, one end of the coupling sleeve is connected to the drive shaft of the hydraulic motor through a key, and the other end of the coupling sleeve is connected to the piston rod through a steel ball; the other end of the piston rod is connected to the load;

[0024] The side of the piston is evenly distributed with two sets of opposite grooves, the two sets of grooves have the same geometric shape, are spaced apart from each other, and are all parallel to the axis line of the piston rod; the first set The grooves only extend to one end face of t...

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Abstract

The invention relates to a two-degree-of-freedom hydraulic cylinder, which comprises a piston rod, a cylinder body and an end cover, wherein the piston rod is connected with a piston, and is connected with a hydraulic motor through a shaft connecting sleeve, the shaft connecting sleeve does not limit the axial sliding of the piston rod, one end of the shaft connecting sleeve is connected with a driving shaft of a hydraulic motor through a key, the other end of the shaft connecting sleeve is connected with the piston rod through a steel ball, the other end of the piston rod is connected with a load, the side surface of the piston is uniformly provided with two groups of grooves in opposite directions, the two groups of grooves are the same in the geometric shape, are alternately arranged, and are parallel with the axis of the piston rod, the first group of grooves only penetrates to one end surface of the piston, the second group of grooves only penetrate to the other end surface of the piston, the number of the first group of grooves is Z, Z is a natural number, the central angle of the grooves is pi / (2Z), the central angle of the adjacent grooves in one group is 2pi / Z, the central angle of the adjacent grooves in different groups is pi / Z, the middle of the cylinder body is provided with even number of radial oil holes, the diameter of each oil hole is smaller than or equal to the width of the single groove of the piston, and the central angle of the two adjacent radial oil holes is pi / Z.

Description

technical field [0001] The invention relates to a hydraulic cylinder. Background technique [0002] The cleaning vehicles for the isolation guardrails in the middle of urban roads and the guardrails on both sides of the road are usually drum-type. When the drum rotates in one direction, the textiles on the outer wall of the drum will directly contact the guardrails to achieve the purpose of removing pollutants on the surface of the guardrails. Since the drum rotates with a single degree of freedom, the textiles on the outer wall of the drum and the guardrail also rub against each other with a single degree of freedom. This single degree of freedom friction will lead to incomplete removal of pollutants on the surface of the guardrail. [0003] The drum is driven by the hydraulic cylinder of the guardrail cleaning vehicle, and the hydraulic cylinder of the cleaning vehicle can only be driven in a single phase. Contents of the invention [0004] The invention overcomes the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/08F15B15/14F15B15/20
Inventor 白继平胡启祥吴永华张业明
Owner HANGZHOU TAIPU AUTOMOBILE TECH CO LTD
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