SU1535951A2 - Pneumatic percussive reversible device for driving holes in soil - Google Patents

Abstract

The invention relates to mining and construction equipment and is intended for drilling a well in the ground. The purpose of the invention is to increase the reliability of the device by reducing the likelihood of pipe jamming while improving energy performance. In case 1, there is a drummer 2 with a window 3 and a cavity 4. The latter has a stepped nozzle 5, which is made up of sleeves 21 and a stem 22 in contact with its end surfaces, and an axial protrusion is placed on one of the end surfaces, and on the other end surface, a reciprocal step is provided to accommodate the protrusion, thus forming a dovetail-type compound. Rotating sleeve 15 is made with the possibility of fixing the liner and the stem. The nozzle 5 can be made with an additional element installed axially to the stem and in contact with the last polycine surface. On the latter, additional protrusions and a reciprocal ledge are placed perpendicular to the protrusion and the shoulder of the liner and stem. When compressed air is supplied through line 23, the hammer 2 strikes the body 1 and the device moves in the ground, forming a well. Making the nozzle composite of the sleeve and stem ensures its radial mobility, which reduces the likelihood of seizure. 2 hp f-ly, 6 ill.

Description

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Claims (2)

Claim 20 1. Pneumatic reversible percussion device for driving holes in the soil according to ed. St. No. 1313973, characterized in that, in order to increase the reliability of its operation by reducing the likelihood of jamming of the nozzle while improving energy performance, the stepped nozzle is made integral in the form of contacting end surfaces of the sleeve and stem, and on one of the end surfaces 30 an axial protrusion is made placed around the circumference, and on the other end surface, a reciprocal step is made to accommodate the protrusion, while the rotary sleeve is made with the possibility of fixing the sleeve and stem . 2. The device according to π. 1, characterized in that the protrusion and the ledge of the pipe is made with the possibility of forming a connection like "dovetail". ₄₀ 3. Arrangement (* thy according to π. 1, characterized in that the nozzle is made with an additional element mounted axially to the stem and in contact with the latter along the end surfaces, with the latter having an additional protrusion and reciprocal step placed perpendicular to the protrusion and ledge of the sleeve and stalk me. Figure 2. Type A 5 B Phi d ’