SU1236099A1 - Hydropneumatic percussive device - Google Patents

Description

The invention relates to the mining industry and can be used in impact devices for the destruction of rocks and artificial materials.

The purpose of the invention is to increase the efficiency of rock destruction by providing the ability to control the impact energy.

The “drawing is a diagram of a percussion device

The device consists of a shock unit, in the case 1 of which there is a striker 2 and a piston 3 coaxial to it, and a control unit 4 with a spool 5, the device is connected to a pressure source 6 and a drain 7 master.

A backflow valve 8 and an indirect pressure regulator 9 are installed in parallel in the control oil pipe 10, which via the control channel 11 of the housing 1 connects an annular groove 12 formed by its two cores with the zolotronny cavity 13 through channels 14 and 15 in block 4 management The firing pin 2 divides the housing 1 into the cavities of the platoon 16 and the discharge 17, and the cavity of the accumulator 18 forms together with the movable piston 3. The plunging cavity 16 with the help to; the analog 19 is connected to the pressure line 6. The ring groove 12 on the striker 2 through The drain channel 20 of the housing 1 and the pipe 21 are connected to the drain line 7, which through the channel 22 is connected to the ash pit 13, the cocking cavity 16 at the time of opening the spool can communicate with the drain line 7 through the pipe 23.

The tool is mounted with limited axial movement. Channel 20 in the impactor case 1 is offset relative to the control channel 1T in the tool direction by an amount equal to the sum of the tool movement values and the width farthest from the tool head. This ensures at the time of striking the striker 2 to the tool- to disconnect the control channel 11 from the channel 20 and to connect the drain cavity 17 through the control oil pipe 10. The return valve 8 to the return valve 13, this causes timely closure of the pipe 23 when the working valve is displaced fluid moving

the porsche 3 of the drain cavity 17 under the pressure of the compressed gas in the accumulator 18,

The device works as follows

at once

In the initial position, the firing pin 2 under the effect of the gas pressure of the accumulator 18 is in the extreme left position (according to the drawing).

If the control is open, the prestressing of the tool 2 first takes place and the working fluid fills the drain cavity 17 and creates in it the pressure necessary for

closing the spool using the annular piston 3, then releasing the tool. In this case, the nipple 2 under the action of compressed gas of the battery 18 moves to the left extreme position (according to the drawing) and opens the control channel 11, thus connecting the discharge cavity 17 with the filling zone 13 through the reverse valve 8 and the channel 15. Under the action of pressure gas accumulator 18 ring piston 3 moves to the left end position and displaces the working fluid from the cavity 17 of the drain to close the valve 5,

Under the force of a static basement; the gun 2 moves to connect the platoon 16 through the channel 19 with the pressure line 6. The working fluid under pressure enters the platoon cavity 16, the platoon 2 (idling) occurs, during which the fluid from the cavity 17 is drained through the control channel 11, the control oil pipe 10, the check valve 8, the channel 15, the ash space 13 and the channel 22 are displaced into the drain line 7. At the end of the platoon with the right side of the striker 2, the control channel 11 is closed and pressure builds up in the drain cavity 17 e, which is counteracted by the indirect pressure regulator 9, connected to the gilding cavity 13. The higher the response pressure is adjusted by the indirect pressure regulator 9, the greater the distance the striker passes and the higher the impact energy of the striker 2 on the tool.

Under the action of pressure

"-7"

fluids in the drain cavity 17, the valve 5 opens the pipeline 23, jointly the platoon cavity 16 with the drain cavity 17 and the working fluid is displaced

3 1236099- 4

through the piston 3 and the furthest from the tool channel 14, the pressure regulator 9 of the non-squeezing hammer 2, At the time of the direct action, the oil pipe 10 up-stroke of the hammer 2 at the remote tool, the control channel 11, cue from the tool on the juice of the striker 2, point 12, channel 20, pipeline 21 communicates through the control channel 11, and further to the drain line 7. The control oil 10 control reverses the action of the energy of compressed gas from the accumulator-valve 8, the channel 15, the cavity 17 drains the multivator 18 2 moves to the left of the zolotnikovaya cavity 13. Provo (on drawing), there is a working, closing of the spool 5 under the stroke of the striker 2. The working fluid, by the action of the working fluid, is displaced by the e-hydraulic pump through the cavity of the annular piston 3 from the cavity

16 inlet, pipe 23 into the cavity 17 of the drain under the action of pressure in

17 Leads and acts on the mobile accumulator 18.

Claims (1)

A HYDRO-PNEUMATIC SHOCK DEVICE, including a shock assembly, the body of which has a control channel and a drain channel and forms, with a striker having two belts, and a piston mounted coaxially to the striker, platoon, drain and battery cavities, a control unit whose ash-filled cavity is communicated by the control oil pipe to the channel control, and a tool installed with the possibility of limited axial movement, characterized in that, in order to increase the efficiency of rock destruction by providing the possibility of regulation Hovhan impact energy, the device is provided with a pilot operated pressure regulator and a check valve mounted in parallel to the control oil line, and slivnoy'kanal in the housing offset relative to a control channel in the tool direction by an amount equal to the sum of the quantities of the tool and the tool width of the driving belt of the striker. 9 number S 1236099 A1 at _p kolDVU1