Sliding sleeve type hydraulic pickaxe

Abstract

The invention discloses a sliding sleeve type hydraulic pickaxe, which comprises a pickaxe block, a piston, a drill rod, an energy accumulator, a headpiece, a switch valve, a high-pressure oil interface P and an oil return interface T, wherein the pickaxe block comprises the headpiece, a cylindrical pickaxe body and a right valve body; the end part, facing the right valve body, of the headpiece is provided with a left valve body with a cylindrical and bossed structure, and the heat accumulator is arranged in the headpiece; one end, facing the left valve body, of the right valve body is provided with two barrels which are high outside and low inside, through holes are formed on the outer barrel, and countersinks which communicate three annular oil slots are formed between the outer and inner barrels; a sliding sleeve is sleeved on the inner barrel between the left and right valve bodies; the piston has a head, a body and a tail, two annular grooves are formed on the body, and the tail is connected with the drill rod; and through holes D and V of the sliding sleeve and the annular grooves of the piston body pour or release pressure oil alternatively on two sides of the piston in thereciprocation motion. Thus, back and forth reciprocating motion of the piston is realized.

Description

technical field [0001] The invention relates to a tool, in particular to a portable sliding sleeve hydraulic pick. Background technique [0002] As a small hydraulic rock breaker, hydraulic pick has significant advantages compared with pneumatic rock breakers and other types of crushers: large output power, small equipment size, light weight, high energy utilization rate, and easy adjustment of output characteristics , The main moving parts of the hydraulic pick work in the oil bath, with good lubricity, long service life of the equipment, low noise and purely high-frequency noise, which improves the working conditions and the impact on the surrounding environment. The excellent characteristics of the hydraulic rock breaker make it more and more widely used in the fields of mining, construction, municipal construction, steel and national defense construction, and it has a tendency to replace the pneumatic rock breaker. When we used the hydraulic pick of KRUPP company in Ge...

AI Technical Summary

Problems solved by technology

When we used the hydraulic pick of KRUPP company in Germany, we found that in addition to the above advantages, its disadvantages are: many parts, complex structure, difficult to manufacture and maintain

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