SU1465556A1 - Percussive device - Google Patents

Abstract

The invention relates to impact devices for the destruction of rocks and artificial materials. The goal is to increase the efficiency of the device by reducing the leakage of working fluid into the external environment. The percussion unit includes a percussion mechanism with striker 1 having two cca 2 and 3, and a casing (k) 4c with a pressure head 5 and a drain 6 channels. The latter are arranged with the possibility of combining their outer edges with the outer edges along the edges of the OA. Oishemaaicha m from the s of Tfr l 2,3 brisk I. Striker 1 forms with K 4 the working chamber 7 of the receptacle and the cavity: cocking 8, overflow 9, drain 10 and battery 11. The control unit has a spool 12 and K 13. Channels 14–18 of the control valve are in communication with the working chamber 7 and cavities 8–10 of the impact unit and the pressure line 19 by pipelines 20–24. The length of the drain channel 6 K 4, communicated with the drain line 29, is made equal to the size of the working stroke of the striker 1. The control unit is made with the return of the spool 12 by the spring 25. The spool is made two-way with steps 26 and 27. The striker 1 moves to the left when the cavities are communicated 8 and 10 under the action of pressure of compressed gas in the cavity P. There is a working stroke of the striker 1 and a strike of the striker 1 against the tool. In this case, the liquid from the pressure line 19 through the channel 5, the cavity 9, the pipeline 21 and the channel 15 enters the control unit and moves the valve 12. 1 sludge. a5 / - 7 (O 4ik. SL JV JV in W 11 th 29

Description

The invention relates to rock formations 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 the device by reducing the leakage of the working fluid into the external environment.

The drawing shows the device longitudinal section.

The percussion device contains a percussion mechanism with a striker 1 having two shots 2 and 3, and case A, having pressure 5 and drain 6 channels, arranged to align their outer edges with the outer edges along banks 2. and 3 striker 1, forming with body 4 slave

I feel the chamber 7 of the sealing unit and the cavity: cocking 8, overflow 9, merging 10 and the cavity 11 of the battery

The control unit has a spool 12 and a housing 13, an overflow 14, a control 15, a worker 16, a drain 17 and a pressure 18 channels of which are communicated respectively with the working chamber 7 of the sealing assembly, the overflow 9, charging 8 and the drain 10 cavity of the shock assembly and the pressure line 19, pipelines 20-24.

The control unit is made with a spring return of the spool 12 by a spring 25, this time the spool is made double with ream 26 and 27 and a groove 28 "

The length of the drain channel 6 of the housing And reported by the drainage line 29, is equal to the working stroke of the striker 1,

The nodal assembly has a sealing element 30,

The cavity P of the battery is filled with compressed gas.

The device works as follows.

In the initial position under the pressure of the compressed gas, the hammer 1 is in the extreme left (according to the drawing) position, while the spool 12 is in the extreme right position under the force of the spring 25. At this time, the overflow cavity 9 connects the pipes 21 and 23, the drain cavity 10 channel 6 is connected to the drain line 29, and the back -

rec on ska channel 6,

3 striker 1 combined

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When the working fluid is supplied to the pressure line 19, the fluid passes through the pipeline 24, the channel 18, the groove 28, the channel 16 and the pipeline 22 enters the charging cavity 8, as a result of which the striker 1 moves to the right (according to the drawing), the gas in the cavity 1 1 is further compressed the fluid from the drain cavity 10 is forced out into the drain line 29 through channels 6. A platoon (idle) of the striker 1 occurs, at the beginning of which simultaneously juice 2 of the striker 1 cuts off channel 5 from cavity 9, and juice 3 communicates cavity 9 with the drain channel 6, spool 12 during idle striker 1 is held in the extreme right position by the force of the spring 25. At the end of idling, juice 3 of the striker I simultaneously cuts the cavity 10 from the drain channel 6, and juice 2 informs a charging cavity 8 through the channel .5 for example with a pressure line 19. Further When the striker 1 moves, the fluid is closed in the drain cavity 10, acts on the spool 12, moved it to the left and compressed the spring 25. When moving the spool 12 1 to the left, first channel 14 is connected with the groove 28, then channel 16 is cut off from the groove 28, and at the end They spool 12 channel 16 is reported with to through the channels 16 and 17 and the pipes 22 and 23 of the charging cavity 8 communicates with the cavity 10). After the communication of the cavities 8 and 10 of the fluid pressure in them, the firing pin I is equalized by the pressure of the compressed gas in the cavity 11 and accelerated; It is left. The working stroke of the striker 1 takes place, during which at first simultaneously the cavity 10 communicates via channel 6 with the drain line 29, and the cavity 8 by means of the striker 2 is cut off from channel 5, then the cavity 9 is simultaneously cut off from channel 6 and communicated through channel 5 pressure valve 19, strikes the striker 1 on the tool. Fluid from the pressure line 9 through channel 5, cavity 9, pipe 21 and channel 15 enters the control unit and moves the spool 12 to the right (according to the drawing) extreme position. Further, the operation cycle of the device is repeated.

The sealing unit of the striker 1 works in this way.

During the working stroke of the striker 1, the fluid pressure in the working chamber 7 of the sealing assembly is high (because all the flow from the pump through the pipeline 24, channel 18, groove 28, channel 14 and pipeline 20) flows into this chamber, which ensures tight the abutment of the sealing element 30 against the surface of the striker 1 and, consequently, a slight removal of fluid into the external environment.

During idling, the pressure of the fluid in the chamber is 7. equal to the pressure in the discharge line 29, since the spool 12 is held. in the extreme right position by the force of the spring 25, because chamber 7 communicates with line 29 (through conduit 20, channels 14 and 15, conduit 21 and cavity 9). At the same time, the density of the abutment of the sealing element 30 against the surface of the striker 1 decreases sharply, which allows the striker 1 to introduce into the impact device a significant portion of the fluid it has carried during the working stroke.

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1465556

Formula

the invention

The percussion device, which includes a percussion mechanism with a double-sided striker and a body having pressure and drain channels, arranged to align their outer edges with the outer edges of the striker, forming a working chamber of the sealing unit and cavity with the body, coaxing, overflow, drain and accumulator, control unit, having a spool and body, overflow, control, working, drain and pressure channels of which are communicated respectively with the working chamber of the sealing unit, overflow, platoon percussion mechanism and pressure line, characterized in that, in order to increase the efficiency of the device by reducing leakage of working fluid into the external environment, the length of the body drain channel is made equal to the striker stroke, and the control unit is spring-loaded the spool, while the spool is made double.

Claims (1)

Claim Impact device ₅ comprising a percussion mechanism with a double girder striker and a housing having pressure and drain channels arranged to combine their outer edges with the outer edges 10 of the striker belts forming a working chamber of the sealing assembly and cavity cocking, overflow, drain and battery , a control unit having a spool and housing 15, overflow, control, working, drain and pressure channels of which are in communication with the working chamber of the sealing unit, overflow, cocking a common and drain cavities of the percussion mechanism and a pressure line, characterized in that, in order to increase the efficiency of the device by reducing the leakage of the working fluid 25 into the external environment, the length of the drain channel of the body is equal to the working stroke of the striker, and the control unit is made with spring return of the spool, while the spool is made double-belt. course.