SU1612076A1 - Percussive device - Google Patents

Abstract

The invention relates to the mining industry and is intended for shock destruction of rocks. The purpose of the invention is to increase the impact energy by increasing the speed of the striker movement. In the cavity of the device 1, the devices are mounted concentrically with a piston 2 and a piston 3 and a sleeve (B) 4, which form closed end chambers 5 and 6. The housing 1 is made with a protrusion 7. A groove 8 is made on the outer surface B 4. Work chambers 9 and 10. The active face area B 4 is made larger than the active face area of the piston 3. Work chambers 9 and 10 are connected via a distributor 13 alternately to a pressure 11 or drain 12 line. Face chambers 5 and 6 are filled with a working agent. When communicating with the pressure line 11 of the chambers 9 and 10, B 4 moves. As a result, the head 2 moves, but with greater speed, as well. 1 Il.

Description

one

(21) 4628233 / 23-03

(22) 09.30.88

(46) 12/7/90. Bul Number 45

(71) Kiev Institute of Civil Engineering

(72) Yu. P. Pristaylo and Yu. G. Zelensky (53) 622.233.5 (088.8)

(56) USSR Copyright Certificate No. 899890, cl. E 21 C 3/20, 1979.

USSR Author's Certificate No. 977752, cl. E 21 C 3/20, 1980.

54) IMPACT STRIKE DEVICE (57) The invention relates to the mining industry and is intended for shock destruction of rocks. The purpose of the invention is to increase the impact energy due to

increase the speed of movement of the striker. In the cavity of the housing 1 of the device, there are mounted a concentrator 2 of a piston 3 and a sleeve (B) 4, which form closed end chambers 5 and 6. The housing 1 is made with a lug 7. A groove is made on the outer surface B 4 8. Groove surfaces 8 and the protrusion 7 form working chambers 9 and 10. The active face area B 4 is made larger than the active face area of the piston 3. The working chambers 9 and 10 are connected via the distributor 13 alternately to the pressure II or drain 12 line. Face chambers 5 and 6 are filled with a working agent. When communicating with the pressure line 11 of the chambers 9 and 10, B 4 moves. As a result, the head 2 moves, but with greater speed, as well. 1 Il.

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This invention relates to the mining industry, namely to impact devices.

Action to destroy rocks.

I The purpose of the invention is to increase energy.

gift by increasing the speed of the move1 | value of the striker.

 In the drawing given the proposed device.

I The percussion device contains (orpus 1 with a hydraulic cavity, in which it is axially displaceable) the head 2 of the piston 3, on which the sleeve 4 forming with the body 1 and the striker 2 face concentrically disposed chambers 5 and 6 and made with an active face area, the largest active face area of the piston 3 of the striker 2. Case 1 is made with an annular protrusion 7, and the sleeve 4 - with a groove 8.

The surfaces of the protrusion 7 and the grooves 8 form working chambers 9 and 10 connected to the pressure 11 and drain 12 lines by means of the distributor 13, which has two positions 14 and 15. The working tool 16 is fixed on the housing 1 with a finger 17 with the possibility of axial movement. Face chambers 5 and 6 are filled with a working agent.

The device works as follows.

If the mechanism is in such a position as shown in the drawing, and the distributor 13 is turned on in position 14, then the working fluid from the pressure line 11 is fed into the working chamber 9 and moves the sleeve 4 down (according to the drawing). With this in

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chamber 5 increases the pressure of the fluid, which, acting on the active face area of the piston 3 of the striker 2, moves the latter in the direction of idling (upwards along the drawing). Next, the distributor 13 is switched to the position 15. The fluid from the pressure line 11 enters the working chamber 10 and moves the sleeve 4 upwards (according to the drawing), at the same time the liquid is displaced from the working chamber 9 to the drain line 12. In the chamber 6 the pressure of the fluid increases , acting on the active face area of the piston 3 of the striker 2, accelerates the latter before hitting the working tool 16. Then the cycle repeats.

Claims (1)

Invention Formula A percussion device, including a housing, in the cavity of which is located a firing pin with a piston and a distributor installed with the possibility of alternately communicating the working chambers with the pressure and discharge lines, characterized in that in order to increase the impact energy by increasing the speed of movement of the prop The device is provided with a bushing made with a groove, and the body is made with a protrusion, the bushing being mounted for axial movement in the housing cavity and concentrically striking and forming with them closed end cams ry, the working steps Ka 30 are formed faces the housing projection and the bore of the sleeve, and the sleeve end face is formed with an active area greater than the largest active area of the end face of the piston pin.