SU1420157A1 - Device for impact breaking of rock - Google Patents

Abstract

The invention relates to the mining industry and m. used for the destruction of rocks, compaction of loose soils and as a source of seismic waves. The purpose of the invention is to improve the performance of the device by increasing the impact energy and reliability of operation. The housing 1 is divided into the working chamber 2 and the expansion chamber: 3, with the housing 1 there is connected a hydraulic cylinder 4 with the rod 7. To the end of the latter there is a hinged attachment

Description

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the grip of the striker 8. It includes the cheeks 10 with springs 11 and elastic; Voir 12, Cheeks 10 are placed in a deaf I opening 9 of the striker 8. The initial pressure I lazy in the working chamber 2 increases I due to the extension of the rod 7 to the lower I position - the first compression stage.

After the striker is seized with 8 cheeks 10, the rod 7 moves to the upper position — the second stage of compression. Then the pressure in the elastic reservoir 12 is released, the firing pin 8 is pulled off the cheeks 10 and strikes the rock. 1 z.p, f-ly, 1 ill.

one

The device for the impact destruction of mined rocks belongs to the field of mining industry and can be used to destroy rocks, compaction of loose soils and as a source of seismic waves.

The aim of the invention is to improve the performance of the device by increasing the impact energy and reliability of operation.

The drawing shows the device, the overall appearance.

The device for impact destruction of rocks comprises a housing 1 divided into a working chamber 2, an expansion chamber 3 and a hydraulic cylinder 4 with the upper 5 and lower 6 cavities and a rod 7, the striker 8, in the upper part of which there is a blind hole in the shape of a truncated cone 9. A device for gripping the striker, including the cheeks 10, which are spring-loaded with springs 11 in the direction of the axis of the rod, is hinged to the lower end of the shaft 7. In the cavity formed by the inner surface of the cheeks 10, there is an elastic reservoir 12, connected by a main line 13 with the lower cavity of the hydraulic cylinder 6. The expansion chamber 3 is limited by a movable spacer 14,

The device for impact destruction of rocks works as follows.

Before starting work, the initial pressure is supplied to the working chamber 2. LENIENE P (,. The movable spacer 14 moves down and rests on the striking part of the striker 8. The stem 7 of the hydraulic cylinder 4 is in its extreme upper position. The device is ready to start. The three-seat valve (not shown) is turned on - working pressure is supplied to the upper cavity 5 fluid. The rod 7 is pushed and the pressure in the working chamber 2 and expansion chamber 3 increases - the first compression stage. As the rod 7 moves, the springs 11 of the cheeks 10 spring enter the hole 9 at the upper end of the striker 8 Thereafter, the upper cavity 5 connects to the drain, and the bottom 6 - to the pressure line (not shown). The pressure in the lower cavity 6 and the flow line 13 connected to it by the elastic reservoir 12 increases. The cheeks 10 are released in the opening 9 by the elastic reservoir 12 and the hammer 8 is seized The rod 7 is drawn into the hydraulic cylinder. The striker 8 rises together with the movable spacer 14. The pressure in the working chamber 2 increases — the second compression stage. As the pressure in the working chamber 2 increases, the pressure in the lower cavity 6 of the hydraulic cylinder 4 and the elastic connected to it increase. Tank 12. Therefore, regardless of the pressure in the working chamber 2, the firing pin 8 is reliably gripped by the cheeks 10 by means of an elastic tank 12. After the rod 7 rises to the extreme upper position, the lower cavity 6 communicates with the drain line and the pressure in it and the tank 12 falls sharply. Under the action of pressure in the working chamber 2, the striker 8 is pulled off the cheeks 10, no longer unfastened by the elastic reservoir 12. The energy of the compressed gas in the working chamber 2 is converted into the kinetic energy of the striker 8, which is realized by the destruction of the rock. This completes the duty cycle.

If necessary, it can be repeated.

Thus, the device will improve productivity by increasing the impact energy and reliability of the device.

Claims (2)

Invention Formula 1, A device for impact destruction of rocks, including a housing with a working chamber and an expansion chamber, installed in the housing of the hammer, the end of which from the side of the working chamber has a cavity for accommodating in the last device for gripping the hammer, the hydraulic cylinder of the hammer charging platoon divides 0 five 0 its body is on the upper and lower cavities, and the rod is connected with the device for gripping the striker, characterized in that, in order to increase productivity by increasing the impact energy and reliability of operation, the device for gripping the striker is made in the form of rod end and reinforced along its perimeter of the spring-loaded cheeks and an elastic tank placed between the cheeks, the elastic tank communicating with the lower cavity of the platoon hydraulic cylinder. 2. Device POP.1, characterized in that the cavity of the striker has the shape of a truncated cone, the apex of which is oriented towards the end of the rod.