Improved structure of oil channel of middle cylinder body of breaking hammer

Abstract

The invention provides an improved structure of an oil channel of a middle cylinder body of a breaking hammer, and belongs to the technical field of breaking hammers. The problems that eccentric impact force against a piston easily occurs because of straight-through design of the oil channel of the middle cylinder body of an existing breaking hammer so that the piston is easily damaged due to drawing are solved. The improved structure of the oil channel of the middle cylinder body of the breaking hammer is characterized in that a connection port is formed from the front end face to the rear end face of the middle cylinder body in an axial extension direction, the oil channel is arranged on the top of the middle cylinder body and communicates with the interior of the middle cylinder body through two mutually-symmetrical branch oil channels; the longitudinal sections of the two mutually-symmetrical branch oil channels are figure-eight-shaped; two pipe walls which can provide oil to passthrough are formed in the middle cylinder body through the two branch oil channels, tangent lines which are tangential to the outside diameter of the connection port are formed in the pipe walls, andthe two tangent lines are mutually symmetrical with each other. The improved structure of the oil channel of the middle cylinder body of the breaking hammer disclosed by the invention has the advantages that the impact direction of oil can be changed, the eccentric impact force against the piston is reduced, the piston is difficultly damaged due to drawing, and the service life of the breaking hammer is prolonged.

Description

technical field [0001] The invention belongs to the technical field of breaking hammers, and in particular relates to an improved structure of a cylinder oil channel in a breaking hammer. Background technique [0002] The hydraulic breaker is referred to as "breaker" or "breaker", which is installed on the bucket or bucket of the excavator and loader to break stones, rocks, etc. [0003] my country's hydraulic breaker market started in the 1990s of the last world, later than Japan and South Korea, but developed rapidly. In 2010, my country's hydraulic breaker market was close to the European and American markets, becoming one of the world's three largest hydraulic breaker markets. In 2000, the sales volume of the hydraulic breaker market was only about 1,200 units. By 2010, this figure had reached 42,000 units. As one of the main working parts of hydraulic excavators, the market demand for hydraulic breakers is also increasing rapidly. [0004] The middle cylinder body is...

AI Technical Summary

Problems solved by technology

[0004] The middle cylinder body is an important part of the hammer, and the oil passage opened in the upper part is straight and straight. The oil passage opened directly makes the oil directly rush to the piston, causing eccentric impact force on the piston, and the piston is easy to be damaged.

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