Sleeving valve type hydraulic breaking hammer
A technology of hydraulic breaker and breaker, which is used in earthmoving machines/shovels, mechanically driven excavators/dredgers, construction, etc. Large, prone to problems such as strain or stuck, achieving the effect of small throttling loss, small pressure bearing area and compact structure
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Embodiment 1
[0040] Such as Figure 1-3 A sleeve valve type hydraulic breaking hammer is shown, which includes a precursor 8, a middle cylinder 3 and a nitrogen chamber 5 arranged in sequence from front to back, and an O-shaped sealing ring 11. The inside of the front body 8 is provided with a drill rod 7 along the axial direction, and a drill rod bushing 1 is arranged between the inner wall of the front body 8 and the drill rod 7, and a device for axially limiting the drill rod 7 is also arranged in the front body 8. Rod plugging. The inside of the middle cylinder 3 is provided with a piston 9 connected to the drill rod 7, a sleeve valve 4 sleeved outside the piston 9 and adapted to the inner wall of the middle cylinder 3, and a drive piston 9 and the sleeve valve 4 along the middle cylinder. 3. A hydraulic oil circuit system with axial reciprocating movement. The inner wall of the middle cylinder body 3 is provided with a front stop surface 14 of the sleeve valve and a rear stop surfac...
Embodiment 2
[0047] In this embodiment, five through-holes 12 communicating with the pressure-transforming chamber 18 are evenly opened on the bottom surface of the sleeve valve groove 23 , and the rest are the same as in the first embodiment.
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