SU365455A1 - HYDRAULICS - Google Patents

Description

one

The invention relates to devices for drilling wells, in particular, to percussion machines.

A hydraulic hammer is known, consisting of a housing, a spline nut, an anvil with a chisel, an annular valve and a spring-loaded differential piston-hammer.

The proposed hydraulic hammer differs from the well-known fact that in the housing in the piston cavity, in the hammer piston's reverse stroke and in the annular valve, channels are periodically connected to the compression chamber with the discharge pipeline in the lower position of the hammer. .

This embodiment improves the efficiency.

The drawing shows the proposed hydraulic hammer, a longitudinal section and a section along LL.

A hydraulic hammer consists of two cylinders / and 2 connected by a thread. Holes 5 and and annular groove 5 are made in the cylindrical tube / and channels 6 and 7 are in cylinder 2. An annular valve 8 with eccentric annular protrusion 9 and holes 10 is located in the cylinder. In the cylinder 2 there is a differential norigene hammer / with annular protrusion 12.

From below, the cylinder / is closed by a slotted nut 13, in which an anvil 14 is placed, fastened with a docket 15. The exhaust channels 16 are arranged in a slotted nut and an anvil. compressed air or be used

another gaseous element.

Outside the cylinders 1 and 2 are closed by a cover 18, which forms an annular channel 19 between itself and the cylinders, which is connected at the lower valve position through the opening 4,

annular groove 5 and holes 10 with sub piston iolost piston 1 - hammer 11 li constant

connected through channel 7 with its over piston cavity 20.

In the position shown in the drawing, the valve 8 is pressed against the anvil 14, the exhaust ports 16 are closed, and the top section of the hammer is connected to the piston cavity 20 and the pressure pipe. The pressure pipe from the pipeline enters the supra-permeable cavity 20 and then through the channels 7, 19, 4, 5 and / (into the sub-piston cavity of the piston-hammer, retracts the norshen hammer, and the spring 17 is compressed.

The hammer piston, reaching the protrusion 9 on the valve 8, carries the afterbirth) 1 behind it, opening the exhaust channels 16. After that, the clanan 8 moves independently, since its front end square

more than the area of the rear end. Hole 10

the valve 8 is displaced relative to the annular groove 5 and quickly shut off, the hammer piston // stops, the liquid column in the pipeline also stops and a hydraulic shock occurs, under the action of which, as well as iodine, by the action of overpressure of the liquid on the upper end the piston-hammer last rushes forward, forcing the water out of the podporshnevoy cavity to the outside through the exhaust channels 16. At the same time, the hammer-piston meets moving towards it under the pressure of the exhaust fluid C Apan 8, carries him along with himself, strikes the anvil 14, fastened with

with a bit 15, presses the valve 8 against the anvil, as a result of which the water is expelled to the outside from the sub-cavity of the pressure hammer, and the process is repeated.

Subject invention

An actuator comprising a housing, a slot nut, an anvil with a chisel, an annular valve and a spring loaded differential piston hammer, characterized in that, for the purpose of new efficiency, channels are periodically connected in the housing and in the annular valve with a sub-piston zero. pressure pipe.

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