Tunneling hydraulic cylinder

Abstract

The invention relates to the field of hydraulic cylinders, in particular to a tunneling hydraulic cylinder. The tunneling hydraulic cylinder comprises a fixing sleeve, a hydraulic structure, a filterscreen, a dust removal structure, an end cover and a lubricating structure, wherein the dust removal structure is matched with the use of the hydraulic structure, so that the hydraulic structure drives a cleaning assembly in the dust removal structure and a hydraulic shaft in the hydraulic structure to rotate while the hydraulic structure extends; the dust removal structure drives the lubricatingstructure, so that lubricating oil liquid is extruded, and the lubricating oil is uniformly smeared on the hydraulic shaft through the dust removal structure, so that the transmission of the hydraulicstructure is more stable; meanwhile, later-stage waste residue is prevented from being adhered to the hydraulic shaft; meanwhile, the dust removal structure blows the hydraulic shaft through gas, sothat the lubricating oil is further smeared on the hydraulic shaft more uniformly, and the waste residue in a coal mine can be prevented from being adhered to the hydraulic shaft during hydraulic driving; and when the hydraulic structure is shortened, the hydraulic structure drives the cleaning assembly in the dust removal structure to rotate, so that sweeps on the hydraulic shaft are scraped, andthe sweeps are prevented from entering the interior of the hydraulic structure.

Description

technical field [0001] The invention relates to the field of hydraulic cylinders, in particular to a driving hydraulic cylinder. Background technique [0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion); it has a simple structure and reliable operation; when it is used to realize reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap , the movement is stable, so it is widely used in various mechanical hydraulic systems; the output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides; the hydraulic cylinder is basically composed of a cylinder and a cylinder head, a piston and a piston rod, It is composed of sealing device, buffer device and exhaust device. [0003] However, when the existing driving hydraulic cylinder is used in the bulldozer...

AI Technical Summary

Problems solved by technology

[0003] However, when the existing driving hydraulic cylinder is used in the bulldozer in the mine tunnel construction process of the coal mine, the slag of the coal mine is easy to raise dust when it is scooped up. Dust gathers on the piston rod. When the dust enters the interior of the hydraulic cylinder along the piston rod, it is easy to affect the cleanliness of the hydraulic oil. The friction between the rod and the cylinder can easily cause damage to the piston rod

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