SU1745849A1 - Hydraulic percussion machine - Google Patents

Abstract

The invention relates to a drilling technique, in particular, to direct impact hydraulic machines. The purpose of the invention is to increase the reliability of the device by increasing the wear resistance of the ball valve. The hydraulic shock machine contains a prefabricated body 1, an anvil 5, a spring-loaded piston-hammer 3, a thrust bushing (HC) 8, the inner end surface of the shock wave is made conical, the shock wave is installed in the housing 1 with spring loading. Inside the shock wave is placed a shutter 6, made in the form of a ball of elastic material. The ball interacts with the conical surface 7 and the torus

Description

The invention relates to a drilling technique, in particular, to direct impact hydraulic machines.

The purpose of the invention is to increase the reliability of the machine by increasing the wear resistance of the stepper gate.

FIG. 1 shows a water hammer machine, general view; in fig. 2 shows a section A-A in FIG. in fig. 3 is a section bb of FIG. 2.

Hydraulic shock machine contains a prefabricated body 1 with an annular protrusion 2 on the inner surface, the piston-hammer 3, spring-loaded element 4, the anvil 5 and the valve assembly.

The valve assembly consists of a bolt 6, made in the form of a ball of elastic material, interacting with the upper end of the impacting piston 3 and the cone-shaped end 7 of a spring-loaded thrust sleeve 8, inside which is placed a ball lock. The sleeve 8 is installed with the possibility of interaction with the spring 9, the limiter 10 and the bolt 6. The cylinder 11 with the seal 12 connects the parts of the modular housing 1.

Inside the thrust sleeve 8 installed covering the shutter 6 centering vertical ribs 13.

The inner surfaces 14 of each pair of diametrically located ribs 13 are bevelled to one side with respect to the vertical plane passing through the axis of the machine and the ribs. In this case, contact points 15, 16c are formed by a gate 6 that are offset relative to the longitudinal axis 17 of symmetry of the rib 13.

On the tapered end 7 of the thrust sleeve.8 are asymmetrically located grooves 18.

In the thrust sleeve 8 there are made bypass channels 19 for the passage of fluid,

Hydraulic shock machine works as follows.

When setting the hydraulic shock machine on the bottom, the upper end of the piston of the hammer 3 enters the central channel of the spring-loaded thrust sleeve 8 and contacts the shutter 6, which is pressed against the cone-shaped end 7 of the sleeve 8 by a flow of washing liquid. Under the action of a hydraulic shock that occurs when the flow is blocked, the piston-hammer 3, together with the valve assembly, moves downward with increasing speed, compressing the springs 4 and 9. When the spring 9 is compressed, the valve assembly stops, resting on bushing 8 against the stopper 10, opening for the working agent easy access to the face. In this case, the piston-hammer 3 continues to move by inertia and strikes the anvil 5 associated with the rock-breaking tool.

Under the action of the spring 9, the resistant sleeve 8 with ball valve b with acceleration

rushes up. In some cases, the sleeve may extend as far as the stop into the protrusion 2. After the stop sleeve 8 stops, the ball valve 6 is inertia detached from the cone-shaped end 7 and as a result of

the internal cavities 14 of diametrically located ribs 13 are beveled, the ball valve has the ability to shift relative to the axis of symmetry 19 and at the same time is twisted by the flow of the working agent and

eccentric friction forces on the contact points 15, 16 on the inner surfaces 14. The ball valve 6, descending on the cone-shaped end 7, is additionally twisted by the flow of the working agent passing

through asymmetrically arranged grooves 18, after which it is pressed against the cone-shaped end 7 with a flow of working agent.

After striking, the piston-hammer 3 returns to its original position,

while in contact with the surface of the piston end of the impactor, a new section of the surface of the ball valve comes in, and a cycle is repeated.

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Formula of Invention

Hydraulic shock machine, including a prefabricated body, anvil, spring-loaded piston-drummer installed in

the housing is a spring-loaded thrust bushing with an inner end conical surface, a breech valve, made in the form of a ball of elastic material that interacts with the cone-shaped end face of the thrust bushing and

The end of the impact piston, which, in order to increase the reliability of the machine by increasing the durability of the ball gate, has fins on the inner surface of the sleeve, and the inner surfaces of diametrically opposite ribs are bevelled in one direction relative to the vertical plane passing through the axis of the machine and ribs, and on the inner conical end surface of the thrust hub asymmetrically arranged grooves are made.

sixteen

Fig

А- А Shutter conditionally not shown

 X

I

(Rig g

Claims (1)

Claim A hydropercussion machine, comprising a prefabricated housing, an anvil, a spring-loaded piston-hammer, a spring-loaded thrust sleeve with an internal end conical surface installed in the body, a shutter made in the form of a ball of elastic material, interacting with the conical end of the thrust sleeve and the end of the piston-hammer, staggering5 In order to increase the reliability of the machine by increasing the wear resistance of the ball valve, ribs are made on the inner surface of the sleeve, and the inner surfaces are 5 mm in diameter. flax opposite edges MSE sheny in one direction relative to the vertical plane passing through the axis of the machine and the fins, and an inner conical end surface of the thrust bushing formed asymmetrically arranged notches. Shutter conditionally - not punished Figure 2 5-5 Fig. C