Large hydraulic breaking hammer

Abstract

The invention discloses a large hydraulic breaking hammer. The large hydraulic breaking hammer comprises a cylinder body assembly, a piston arranged in the cylinder body assembly in a sliding mode and a steel chisel installed at one end of the cylinder body assembly, the cylinder body assembly comprises an upper cylinder body, a middle cylinder body and a lower cylinder body which are sequentially spliced and fixed, one end of the steel chisel is inserted into the lower cylinder body, a flat pin for fixing the steel chisel is arranged in the lower cylinder body, an inner lining and an outer lining are further arranged between the lower cylinder body and the steel chisel, the inner side wall and the outer side wall of the inner lining and the inner side wall and the outer side wall of the outer lining are attached to the inner wall of the lower cylinder body and the outer side face of the steel chisel correspondingly, the steel chisel does not make contact with the lower cylinder body, and the diameter of the steel chisel is 200 mm. According to the large hydraulic breaking hammer, the steel chisel with the diameter of 200 mm and the matched cylinder body assembly are adopted so that a more suitable breaking hammer can be selected when an excavator breaks, the breaking efficiency is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of rock crushing equipment, in particular to a large hydraulic 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] The working principle of the hydraulic breaker is: powered by the output pressure oil of the hydraulic pump of the excavator and loader, the reciprocating motion of the piston is controlled through the distribution valve. During the stroke, the rear cavity of the middle cylinder of the hammer is filled with high-pressure hydraulic oil, and the piston is impacted by the compressed nitrogen in the upper cylinder and the high-pressure oil to smash the rock; The piston moves backward and compresses the nitrogen in the upper cylinder, thus completing a working cycle. The repeated stroke and return stroke of the piston makes the chise...

AI Technical Summary

Problems solved by technology

[0004] Existing hydraulic breakers are generally used for excavators below 49 tons or above 65 tons, and the diameter of the steel drill is correspondingly below 195mm or above 210mm. There are fewer types for customers to choose. When dealing with large rocks, there are often defects such as insufficient impact force and low efficiency; while excavators using steel drills with a diameter of more than 210mm weigh more than 65 tons and are too heavy, so there is no need to use such a large breaker for normal work , will lead to waste of crushing efficiency and indirectly increase production cost

At the same time, the existing breaker also has the disadvantages of easy breakage of the lower cylinder and troublesome loading and unloading.

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