SU395568A1 - DRILLING MACHINE - Google Patents

Description

one

The invention relates to the field of drilling holes and boreholes mainly in underground conditions.

A drilling machine is known that includes a pump, a rotator, a hydraulic hammer, comprising a housing, a piston block, a high pressure chamber, a drain and working chamber, a feed hydraulic cylinder with a piston and a rod fixed to the hydraulic hammer housing, a forward and reverse chamber, a spool with the distributor and the piston forming a chamber with the housing in communication with the chamber of the working stroke of the hydraulic cylinder - delivery.

However, the hydraulic hammer works independently of the bottomhole feed force and can operate with maximum energy and frequency of shocks even if it is not pressed against the face. In this case, the entire impact energy is perceived by the hammer body, so the durability of the machine is reduced. The work of a hammer without pressing to the bottom can be during drilling, during idle work, if the drill rod gets into cracks and in other cases.

The proposed machine is characterized in that the pump is connected to the high pressure chamber of the hydraulic hammer by means of a distribution chamber of the spool. This makes it possible to increase the operational reliability of the machine.

The drawing shows the proposed device.

It consists of a pump 1, a rotator 2, a hydraulic hammer 3 comprising a body 4, a piston head 5, a high pressure chamber 6, SL | IVH1 Yu 7 and a working chamber 8, a feed cylinder 9 with a piston 10 and a rod bonded to the hydraulic body hammer, chambers 11 and 12, respectively, of forward and reverse strokes and spool 13 with a distributor 14 n piston 15, forming chamber 16 with the body.

When starting the hammer into operation, the oil passes from the pump into the chamber 6 of the high pressure hammer through the 1d chamber.

In the absence of pressure in the forward flow chamber 11, the feed hydrocyl distributor 14 passes the minimum amount of fluid into the high pressure chamber 6 of the hammer, which can be adjusted using throttles 18. As the pressure in the forward flow chamber increases, the piston / 5 spool 13 moves under the action of this pressure. At the same time, the distributor 14 moves and the flow rate of the liquid entering the high pressure chamber of the hammer increases.

Thus, if instrument 19 is not

about

an axial force is applied which presses it

to slaughter, and the energy of the blows in this case is completely perceived by the statik, the hammer cannot develop the maximum energy ii the frequency of the blows. Thus, the machine is sewn up from the maximally possible surges caused by idle hammer blows, which leads to an increase in its durability. When an axial force is applied to the tool, the hammer develops maximum energy and frequency of impacts, but in this case the impact energy acts through the tool on the bottom.

The subject of the invention is a drilling machine, which includes a pump, a rotator, a hydraulic hammer, comprising a housing, a hammer head, a high pressure chamber, a drain and working chamber, a feed hydraulic cylinder with a hole and a stem, fastened with a hydraulic hammer housing, forward and reverse chambers , a spool with a distributor and a piston forming a chamber connected to the housing and communicating with the feed cylinder chamber of the supply hydraulic cylinder, which differs from teh U1, which, in order to increase operational reliability, the pump is connected to the high-pressure chamber ravlicheskogo hammer through a distribution valve chamber.

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