SU1627692A1 - Hydraulic percussion device - Google Patents

Abstract

The invention relates to the mining industry and is intended for 1 liter of rock formations. The purpose of simplifying the con device and increasing its work ha is by reducing the number of moving locking elements included in it, Usgr-but contains cortn 1, piston head (PY 2, differential - Ire im.ne.ny valve (K) 4 and i and ipo acc c d m (GA) 14 Casing 1 reversal (. PB 2 chambers of direct 6 and back 5 passages Kamora 5 sp (ana with pressure () and drain 8 cameras by means of K 4 camera 10 controls K 4 had a m work space than camera 1 1 on map1S1 | 1al 12 connections t GA 14 through {installed i.ie pair about) K 16 and fussel 13 Pressure line 12 communicates with chambers 5 and 11 Camera 10 communicates with GA 14 When PB 2 returns, las genius in a pressure line 12 bots than in GI. At nope PB 2 in corns 1 d. IG of the general law in GA 14, Pymtags and K 4 were converted to direct silt. PB 2 During the forward course of IIB 2, G 14 1 and g (L

Description

UNION OF SOVIET

SOCIALIST

REPUBLIC ₍ , ₉ , SU _(1U 1627692 A1 (51) 5 Е 21 С 3/20

STATE COMMITTEE

BY INVENTIONS AND DISCOVERIES

AT SCST USSR

DESCRIPTION OF THE INVENTION

AUTHOR CERTIFICATE

(21) 4413998 / 0.3 (22) 04.22.88 (46) 02.15.91. Bull. No. 6 (71 (Donetsk Polytechnic Institute (72) G.M. Timoshenko, S.A. Selivra.

A.F. Yatsenko, A.A. Selivra.

T.A. Ustimenko and S.A. Khoroshenko (53) 622.233.5 (088.8) (56) Copyright certificate (/ SSR No. 1154455, class E 21 C 3/20. 1983.

USSR copyright certificate No. 1550124, cl. E 21 C 3/20, 1988 (54) HYDRAULIC SHOCK DEVICE (57.) The invention relates to the mining industry and is intended for the destruction of rocks. The goal is to simplify the structure of the device and increase the reliability of its operation by reducing the number of movable locking elements included in it. The device contains a housing 1, a piston-striker (IS) 2, a differential distribution valve (K) 4 and a hydraulic accumulator (GA) 14. Housing I forms a direct 6 and 5 reverse chambers with PB 2. The chamber 5 is connected to the pressure chamber 9 and the drain 8 chambers by means of K 4. The control chamber 10 of the K 4 has a larger working area than the control chamber 1 I The pressure line 12 is connected to the GA 14 through a parallel return K 16 and throttle 13. The pressure line 12 is in communication with cameras 5 and II. Chamber K) is in communication with GA 14. With a reverse stroke of NB 2, the pressure in the pressure line 12 is greater than in GA EE. When the SB 2 rests in the housing 1, the pressure in the GA 14 rises and K 4 switches to the forward stroke of the SB 2. During the forward stroke NB 2 discharged GA 14. 1 il

oh yo yo

The invention relates to mining. namely, shock devices for rock destruction.

The purpose of the invention is to simplify the design and increase the reliability of the device by reducing the number of moving locking elements included in it.

The drawing shows the proposed device.

I The hydraulic shock device consists of a housing 1. Inside of which a piston-striker 2, tool 3 and a differential distribution valve 4 are marked. The piston of the striker 2 forms a reverse 5 and a direct 6 strokes with the chamber body. The forward-stroke chamber 6 is connected by a channel 7 to a drain 8 of the distributor chamber and, through an opening in the valve seat, with a pressure chamber 9 of the gel distribution. The piston of the valve 4 of the distributor is made stepwise and, with the housing, two piston chambers 1 (1 and 11. In this case, the working area of the piston surface of the valve 4. located in the piston chamber K) is larger than the working area of the piston surface of the valve 4. located in the piston chamber 11. Pressure line 12 is intended for supplying working fluid to pressure 9. piston 1 I of the distributor chamber and the reverse chamber 3. ('pressure line 12 is connected via a throttle 13 to the hydraulic accumulator 14, whose hydraulic cavity is 15 ohms is connected to the piston chamber 10 of the distributor. Check valve 16 connects hydraulic accumulator cavity with the pressure line 12 to reduce the pressure loss during discharge of the accumulator. Blow-off line 17 is intended for discharging the working fluid.

The operation of the device.

When the working fluid is supplied to the hydraulic shock device, it flows from the pressure line 12 into the reverse chamber 5. The piston goes to> chamber 11. The pressure chamber 9 and the hydraulic pump through the throttle 13. 1st mountains 14. From the hydraulic cavity ι and the accumulator 14, the liquid flows through the channel · 15 into the piston cavity 10 paradise and the relay. g and gel. .Since the charging pressure in the accumulator 14 is lower than the liquid pressure in the pressure head master. This 12. The pressure with the piston with a foam of at least 11 is pippe. than in the piston chamber 10, and under the difference in the forces acting on the pistons of the valve 4, it will move to the lowest position (according to the drawing), blocking the fluid access to the forward chamber 6. The piston-hammer 2 begins to reverse, displacing the liquid from the forward chamber 6 through the channel 7 to the drain chamber 8 and from there to the discharge line 17. At the end of the reverse stroke, the piston-striker 2 abuts against the stops made in the housing (not shown conditionally) and stops. During the entire reverse stroke of the piston-hammer 2, the working fluid enters the hydraulic accumulator 14 and the pressure in it increases. However, the diameter of the throttle 13, the volume of the accumulating cavity and the initial charging pressure of the accumulator 14 are selected so that by the end of the reverse stroke of the piston-hammer 2 the force acting on the valve 4 from the side of the piston chamber 11. remains more than the force acting from the side of the piston chamber K ) After stopping the goose-piston 2 of the goose, the liquid from the pressure line 12 enters the accumulator 14 and the pressure in it increases. At a certain pressure in the accumulator 14, the force acting on the valve 4 from the side of the piston chamber 10 becomes greater than from the side of the chamber 1 1 η, the valve 4 moves upward, blocking the discharge line 17 and allowing liquid to enter the forward chamber 6. Under pressure from the side of the forward chamber 6, the piston-striker 2 begins to make a direct stroke, displacing the liquid from the reverse chamber 5 into the pressure line 12. Since the striker 2 begins to move, the pressure in the pressure pipe 12 decreases and the accumulator 14 begins to displace ive hydraulic fluid from the cavity in the pressure line 12. The fluid enters the accumulator 14 through the throttle 13 and via a check valve 16, which during the forward stroke opens the pressure drop. The high pressure in the hydraulic cavity of the accumulator 14 reliably holds the valve 4 in the upper position, providing a direct stroke of the piston-hammer 2. At the end of the direct stroke of the piston-hammer 2, · · · hit the tool 3 and stop. In this case, in the pressure line 12, the pressure of the working fluid rises to the value of the supplied pressure, and since the accumulator 14 is partially discharged, the pressure in its hydraulic cavity becomes less than the pressure in the pressure line. Thus, in the piston cavity 11. connected to the pressure master; · pour 12, the pressure becomes greater, the more about the piston cavity 10 associated with the hydraulic cavity of the hydraulic accumulator 14. However, by the action of the difference of forces, the valve 4 moves downward, blocking the access of fluid from the pressure pipe 12 into the forward chamber 6, which is connected to the discharge line 17. The non-return valve 16 closes and the piston-striker 2 begin to reverse. Cycle re gay.

Claims (1)

Claim A hydraulic shock device, comprising a housing forming a reverse stroke chamber with a piston-striker and a forward motion chamber connected to the pressure and drain chambers of the differential distribution valve, the control chamber of which, located on the side of the pressure chamber, has a working area larger than the control chamber located on the side of the drain chamber, and the accumulator associated with the pressure line through a check valve, characterized in that, in order to simplify the design and increase reliability and the operation of the device by reducing the number of movable locking elements included in it, the device is equipped with a throttle connecting the accumulator to the pressure line connected to the back-up camera and to the control camera with a smaller working area, and the control camera with a larger working area is in communication with the battery. SosiavelitelO Konstantinov Editor M Tovtin Order 323 Tehred A. Kravchuk Proofreader N. King Circulation 30I Subscription VNIIIPI of the State Committee for Inventions and Discoveries at the State Committee for Science and Technology I 13035, Moscow, Zh-35, Raushskaya nab., D. 4/5 Production and Publishing Plant "Patent", Uzhhorod, st. Gagarina, Ι0Ι