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Spherical hinge structure for propulsion oil cylinder of hard rock heading machine

A technology of hard rock roadheader and propulsion cylinder, which is applied in the direction of engine lubrication, mechanical equipment, engine components, etc., can solve the problems of easy fatigue damage, short bearing service life, fragmentation, etc., to enhance stability and bearing performance, The effect of increasing the axial load bearing area and reducing the stress concentration

Inactive Publication Date: 2016-06-22
CITIC HEAVY INDUSTRIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of short service life, easy fatigue damage, fragmentation and other problems of the existing propulsion oil cylinder joint bearings, the present invention introduces a ball joint structure for the propulsion oil cylinder of the hard rock roadheader

Method used

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  • Spherical hinge structure for propulsion oil cylinder of hard rock heading machine
  • Spherical hinge structure for propulsion oil cylinder of hard rock heading machine
  • Spherical hinge structure for propulsion oil cylinder of hard rock heading machine

Examples

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Effect test

Embodiment Construction

[0020] A ball hinge structure used for a propulsion cylinder of a hard rock roadheader, which includes a propulsion cylinder spherical seat, a spherical seat baffle and a piston rod ball head, and also includes an oil cup, a bolt, a washer, and a propulsion cylinder.

[0021] The said propulsion cylinder spherical seat includes a spherical seat body and a reinforcing rib. The spherical seat body is provided with an inner hemispherical surface, and the inner hemispherical surface is provided with a grease lubrication ring groove. The top of the spherical seat body is provided with a grease injection hole which is connected with the grease injection hole Grease lubrication ring groove, the annular surface of the grease lubrication ring groove is parallel to the spherical seat body gripping surface. The spherical seat body bolt gripping hole is provided on the spherical seat body gripping surface. The upper limit of the hemispherical surface roughness Ra in the spherical seat body is ...

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PUM

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Abstract

The invention discloses a spherical hinge structure for a propulsion oil cylinder of a hard rock heading machine. The spherical hinge structure is composed of a propulsion oil cylinder spherical base and a spherical base baffle, wherein the propulsion oil cylinder spherical base and the spherical base baffle are integrated in a combined mode; the propulsion oil cylinder spherical base comprises a spherical base body, an inner spherical surface is arranged inside the spherical base body, an inner spherical surface circulation belt is arranged inside the spherical base baffle, the inner spherical surface and the inner spherical surface circulation belt are combined for forming a spherical cavity for installing a piston rod bulb of the propulsion oil cylinder, and the spherical cavity is matched with the piston rod bulb in shape. The problems that existing knuckle bearings of the propulsion oil cylinder are short in service life and liable to fatigue damage and breakage are solved.

Description

Technical field [0001] The invention belongs to the technical field of hard rock roadheader engineering machinery, in particular to a ball hinge structure used for a hard rock roadheader propulsion cylinder. Background technique [0002] During the tunneling construction of the hard rock roadheader, the horizontal support is supported on the arc surface of the cave wall by the pressure of the cylinder, and the propulsion cylinder is connected to the main beam through the joint bearing, and the horizontal support and the friction pair between the cave wall provide the main engine with propulsion power. The joint bearing bears a large axial load, and along with factors such as geological and construction tunnel angle changes, frequent vibration and shock loads will occur, resulting in fatigue damage or chipping of the joint bearing, greatly reduced service life, and affecting normal construction. Moreover, the cost of replacing joint bearings is relatively high. Summary of the inv...

Claims

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Application Information

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IPC IPC(8): E21D9/10F15B15/14F15B15/20F16C11/06F16N1/00
CPCE21D9/1093F15B15/1457F15B15/20F16C11/0619F16C11/068F16N1/00
Inventor 高随芹王占军苗军克孟永红占华龙赵智峰王周王峰
Owner CITIC HEAVY INDUSTRIES CO LTD
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