Reversible pneumatic punch (versions)

FIELD: trenchless underground pipe laying.

SUBSTANCE: invention relates to trenchless laying of underground pipelines of considerable length and preset trajectory. Proposed punch includes body accommodating reciprocating striker with bore in rear part, spool getting into bore by larger diameter step with sliding. Spool consists of branch pipe secured in rear part of body and sleeve connected with branch pipe for sliding and spring-loaded relative to rear part of body with at least one radial pin getting into ring zigzag slot made on part fixed on body. Sleeve of spool encloses front part of its branch pipe, being spool larger diameter step, and said ring zigzag slot is made on outer surface of branch pipe. According to first design version, at least one radial hole is made on front parts of branch pipe and spool sleeve. According to second design version, flats are made additionally on outer surface of branch pipe displaced towards rear part of branch pipe. According to third design version each second cavity on rear side of ring zigzag slot is extended to side of rear part of branch pipe.

EFFECT: improved reliability and increased service life owing to making of pneumatic punch of closed type with reversing of delivery of compressed air simply by switching off and on.

7 cl, 19 dwg

 

The invention relates to the construction, namely the trenchless installation of underground utilities, and most can be effectively used in the design of reversible pneumatic punch for borehole significant slowness, as well as in the design of controlled reversible pneumatic punch for borehole to the desired trajectory.

A device for punching holes in the soil, as the USSR №238424, F 02, f, publ. in BI No. 9, 1969, including building, situated in it with the ability reciprocating motion of the striker with the bore at the rear of the slide valve, mounted in the rear of the chassis with the possibility of a limited axial movement by means of a threaded pair consisting of a pipe with a channel for supplying compressed air into the bore of the firing pin and bushings on the front ov a member of the boring drummer. In this device, when fully screwed the valve is his direct course, and when fully turned - reverse. For reversal disconnect air manifold from compressed air and repeatedly rotate it, which is quite difficult, especially in the long hole, and requires a large investment of time. When drilling curved boreholes almost impossible for a reversal using e the th device due to misalignment of parts and considerable resistance of a soil to rotation vozduhoprovodyaschih hose. The disadvantages of this device include the possible binding to screw a pair of housing-valve due to ingress of soil particles in this connection because the connection of the valve into the well.

It is also known a device for punching holes in the soil. C. the USSR №263482, F 02, f, publ. in BI No. 7, 1970, including the building, situated in it with the ability reciprocating motion of the striker with the bore at the rear of the slide valve, mounted in the rear part of the body and consisting of a pipe with a channel for supplying compressed air into the bore of the striker and installed on the front part with the possibility of a limited axial movement spring bushings, trailing a member of the boring drummer. Inside the pipe is placed a spring-loaded socket to connect to vozduhoprovodyaschih hose, while at the front is placed a clamp for connection or disconnection with him bushings. In the initial condition sleeve under the action of the spring is in the front position and connected with a pipe clamp. When the device is connected to a source of compressed air is its direct course. For reversal is necessary to pull air manifold ago, when this fitting will release the latch sleeve disengages from the socket and under the action of compressed air from the bore of the striker off the tsya ago. There is less time for reversal, but also requires considerable effort because of the resistance of a soil to promote the hose, especially when drilling curved boreholes. A significant drawback of this device is the ability to cameraversion, especially when drilling curved boreholes, due to spontaneous tension of the hose during its movement on the ground. The disadvantages of this device include the possible clogging due to ingress of soil particles on the surface of the valve spool, as it also goes into the well.

The closest in technical essence and essential features is the percussion device for formation of wells in the ground by A.S. USSR № 599017, E 02 F 5/18, E 02 D 17/146, publ. in BI No. 11, 1978, including building, situated in it with the ability reciprocating motion of the striker with the bore in the rear, the trailing part of her stage large diameter spool, comprising fixed in the rear part of the casing pipe and trailing connected with it a spring-loaded relative to the rear casing sleeve that covers the front part of the socket and is a stage large diameter spool. Between the nozzle and the rear part of the sleeve is formed of a stepping drive of the angle of rotation of the latter, through p the dinner associated with the ratchet wheel rotation, mounted on the screw slots of the socket. Depending on the relative position of the socket and the bushing is a direct stroke of the device, when the sleeve occupies the front relative to the nozzle position, or the reverse, when the sleeve is in the rear position. The reversal is performed as follows. When any course of device stop filing it with compressed air, while the sleeve under the action of the spring moves forward and turns. Include again the supply of compressed air under the action of which the sleeve, compressing the spring, moves back and turns in this manner, in the same direction. At the end of the movement back sleeve will occupy a position opposite to the previous one, and when this happens the reversing device. For this there is no external influence on the air manifold. However, the design of this device is quite complicated because of the presence of a large number of components and the need for careful selection of their parameters.

The technical problem solved by the invention is to increase the reliability of the reverse punch, and, as a consequence of its durability in the work by simplifying the design by creating a design of a closed type, where the reversal on the air manifold has not been any the bodily impact, and the reverse would be carried out only turning off and again switching on the compressed air supply.

The problem is solved in several versions.

In the first embodiment, it is achieved that, reverse punch, punch, comprising a body located therein with the possibility of reciprocating motion of the striker with the bore in the rear, the trailing part of her stage large diameter spool, comprising fixed in the rear part of the casing pipe and trailing connected with it a spring-loaded relative to the rear casing sleeve that covers the front part of the socket and is a stage large diameter spool, according to the invention on the outer surface of the tube is circular sacsahuaman the groove and on its front side, at least one radial hole. This sleeve has at least one radial aperture in its front part and performed, at least one radial finger, set with a possibility of its placement in the annular zig-zag groove of the socket. When enabled, the punch sleeve valve, compressing the spring, moves towards its rear, at the same time turning by slipping its radial fingers in a circular zigzag groove on the outer surface p. the front part of the nozzle valve. Depending on the original position of the sleeve relative to the pipe it will occupy one of two positions. When a single source position radial holes on the front part of the sleeve is isolated from the radial holes on the front of the nozzle, and air puncher makes a direct course. In another initial position, the sleeve radial holes in its front part coincide with the radial holes on the front of the nozzle valve, and air puncher does reverse. For reversal switch off the compressed air supply. This sleeve valve under the action of the spring moves toward the front at the same time turning by slipping its radial fingers in said groove of the socket. Turn on the air supply, and the sleeve of the valve, compressing the spring, is moved to the rear position, simultaneously turning the manner described above in the same direction. As a result, the sleeve valve will turn on the annular step zigzag groove and, if earlier, for example, the radial holes on the front of the pipe were isolated from the radial holes on the front of the sleeve, i.e. air puncher made a direct course, now referred radial holes are aligned, and air puncher will do the reverse. When making pneumotropic what IR reverse the above manipulations will switch him on a straight course. Thus, for reversal of the punch is not required to rotate or pull the air manifold. In the process of reversing air manifold is not listed in any movement that provides a solution to a technical problem - increased reliability and, as a consequence, the durability by eliminating failures due to the failure of the reverse-induced seizure vozduhoprovodyaschih hose in the hole that is facilitated by the design of the reverse punch closed type.

It is advisable between the drummer and the valve at the front position of the first to form a starting valve, which sleeve valve be installed on the pipe with an overlap of the outer surface of the bushing holes in the wall of the striker, communicated with the front cavity between the casing and the drummer. When drilling long holes (over 40 m) known punchers there are frequent failures due to the inability of their re-launch. This is because the drummer hangs in the neutral position, and to move it from place, requires a very sharp compressed air with a steep leading edge of its flow. At the same time managing the supply of compressed air from the surface through a long air manifold leading edge flow significantly wholived. In this solution the flow of compressed air, entering the bore of the striker stops to increase static pressure value, causing actuation of the starting valve, that is, when the sleeve valve will be moved to the rear position and open the holes in the wall of the striker through which the flow of compressed air from the leading edge, steeper than that of the input flow into the bore of the striker will start flowing into the front cavity between the casing and the drummer. This contributes to a clearer run punch.

The technical problem can be solved in the second embodiment, reverse punch with a more economical consumption of compressed air, comprising a body located therein with the possibility of reciprocating motion of the striker with the bore in the rear, the trailing part of her stage large diameter spool, comprising fixed in the rear part of the casing pipe and trailing connected with it a spring-loaded relative to the rear casing sleeve that covers the front part of the socket and is a stage large diameter spool. According to the invention on the outer surface of the tube is circular zigzag groove and two opposite each other flats that are offset to the rear of the nozzle relative to the made on the front of the nozzle, m is Nisha least one radial hole, and the sleeve has, at least, accordingly, both the front and rear parts of one radial hole and made at least one radial finger, set with a possibility of its placement in the annular zig-zag groove of the socket. When enabled, the punch sleeve valve moves to its rear position in the same manner as in the previous embodiment. And also, depending on the source of its position relative to the pipe, it will occupy one of two positions. When one of the radial holes on the front of the pipe will be isolated from the radial holes on the front of the sleeve, and the flats, offset specified radial holes to the rear of the nozzle provided with radial holes on the back of the sleeve, and air puncher to make a direct course. In another initial position, the sleeve, when the radial holes on the front parts of the socket and sleeve reported among themselves, and radial holes on the back of the sleeve is isolated from the flats on the pipe, air puncher will do the reverse. For reversing the punch off and again include the submission to him of compressed air. This sleeve valve described in the previous embodiment, the image moves the I forward and then back, turning at step zigzag ring groove on the pipe. As a result, the nature of communications between the mentioned radial holes and flats of the socket and the sleeve is reversed and air puncher will begin to make progress, the opposite of the previous one.

It is also advisable between a drummer and a spool in the front position of the first to form a starting valve, which sleeve valve be installed on the pipe with an overlap of the outer surface of the bushing holes in the wall of the striker, communicated with the front cavity between the casing and the drummer. This is the same as in the previous embodiment, will improve the running punch.

In addition, the technical problem can be solved in the third embodiment, reverse punch, simpler in construction, including building, situated in it with the ability reciprocating motion of the striker with the bore in the rear, the trailing part of her stage large diameter spool, comprising fixed in the rear part of the casing pipe and trailing connected with it a spring-loaded relative to the rear casing sleeve that covers the front part of the socket and is a stage large diameter spool. Under the image is the shadow on the outer surface of the tube is circular zigzag groove, each second depression of the groove on the back side are displaced with respect to the other on the same side in the axial direction towards the rear part of the socket about the same size, and the sleeve is made of at least one radial finger, set with a possibility of its placement in the annular zig-zag groove of the socket. The sleeve valve may occupy two positions. Front, in which air puncher makes a direct course, and back, in which air puncher does reverse. The reversal of the punch is described in the previous versions-that is, turn off and again turn on the compressed air supply.

It is advisable and in this embodiment, reverse punch between a drummer and a spool in the front position of the first to form a starting valve, which sleeve valve be installed on the pipe with an overlap of the outer surface of the bushing holes in the wall of the striker, communicated with the front cavity between the casing and the firing pin in the manner described above improves the running punch.

It is also advisable in this embodiment, reverse punch sleeve valve to perform from the inner and outer parts connected by a ball Sha the NIR, that will allow you to compensate for linear and angular displacement hull, drummer and slide relative to each other, resulting from the manufacture and operation. This will reduce the number of failures punch in the work.

The invention is illustrated with specific examples and drawings, in which figure 1 shows a reversible air puncher in a longitudinal incision with partial breakages; figure 2 - reverse air puncher in a longitudinal incision with partial breakages according to the first embodiment; figure 3 is the same air puncher in the moment before the beginning of the return stroke of the striker with the direct course of punch; 4 - the same air puncher in the moment before the beginning of the return stroke of the striker during reverse motion of the punch; figure 5 - cross section a-a in figure 3; figure 6 - cross section b-B in figure 4; figure 7 - scan on the outer surface of the front part of the nozzle valve of the punch according to the first embodiment; Fig - reversible air puncher in a longitudinal incision with partial breakages according to the second embodiment; figure 9 is the same air puncher in the moment before the beginning of the return stroke of the striker with the direct course of punch; figure 10 is the same air puncher in the moment before the beginning of the return stroke of the striker during the reverse course of newmor is Bojnice; figure 11 - cross section b-b In Fig.9; Fig - section G-g of figure 10; Fig - section d-D figure 9; Fig - section E-E figure 10; Fig - scan on the external surface of the front part of the nozzle valve of the punch according to the second embodiment; Fig - reversible air puncher in a longitudinal incision with partial breakages in the third embodiment; Fig the same air puncher in the moment before the beginning of the return stroke of the striker with the direct course of punch; Fig the same air puncher at the moment prior to the beginning of the return stroke of the striker during reverse motion of the punch; Fig - scan on the external surface of the front part of the nozzle valve of the punch according to a third embodiment.

Reversible air puncher (figure 1) consists of a housing 1, in the inner channel 2 with the possibility of reciprocating motion is drummer 3 with the bore 4 in the rear part, in which the moving part of the valve 5 step 6 large diameter. The spool 5 is fixed in the nut 7 of the housing 1 through the absorber 8 with exhaust holes 9. On the outer surface of the striker 3 is made a groove 10, in which there are openings 11 in its wall covered with step 6 of the valve 5. The groove 10 of the striker 3 through the flats 12 on its front anchor belt is in communication with the front Polo is part 13 between the housing 1 and drummer 3. Reversible air puncher through the air manifold 14 connected to the spool 5, and through the device 15 for inclusion connected with a source 16 of compressed air (compressor). Options reverse punch fundamentally different design of the valve 5.

The spool 5 reverse punch according to the first embodiment (figure 2-7) includes a pipe 17 with a through channel 18. On the outer surface 19 of the front of the nozzle 17 is made annular zig-zag groove 20 (Fig.7). The top of the tabs on each side of the groove 20 is displaced toward opposite them cavities in the same direction (counterclockwise). The number of steps of the groove 20 is even (four). In the back of the pipe 17 from the groove 20 is made of two opposite each other in the radial holes 21, in alignment with the depressions on the rear side of the groove 20. On the front of the nozzle 17 ov installed sleeve 22, which is step 6 of large diameter spool 5, the outer surface 23 of the moving member in the bore 4 of the striker 3 and overlying the openings 11 in the wall of the striker 3 in its forward position. The sleeve 22 is supported on the rear part of the housing 1 through a spring 24 and is held on the pipe 17 two oppositely spaced radial fingers 25 within the groove 20 of the socket 17. A spring-loaded sleeve 22, UDA is nick 3 and their elements form a starting valve for the passage of compressed air from the bore 4 of the striker 3 in the front cavity 13. On the front of the sleeve 22 is made a groove 26, in which there are two opposite each other in the radial holes 27 located in the same vertical plane with the fingers 25. The initial distance between the axes of the holes 21 of the socket 17 and the holes 27 of the sleeve 22 is equal to the distance between the centers of the depressions opposite sides of the groove 20 of the socket 17, i.e. the course of the sleeve 22 relative to the nozzle 17.

The spool 5 reverse punch according to the second embodiment (Fig-15) includes a nozzle 17, on the outer surface 19 which is made annular zig-zag groove 20 (Fig) and two radial holes 21, are similar to those in the first embodiment. In the back of the socket 17 on its outer surface 19 is made of two opposing each other of the flats 28 perpendicular to the axis of the hole 21. On the front of the nozzle 17 ov installed sleeve 22, which is step 6 of large diameter spool 5, the outer surface 23 of the moving member in the bore 4 of the striker 3. The front part of the sleeve 22 is similar to the front of the sleeve 22 in the first embodiment, reverse punch, also connected to the pipe 17 also forms with elements of the striker 3 starting valve. On the back of the sleeve 22 is made a groove 29, in which there are two opposite each other in the radial holes 30 (f is g), axis which is perpendicular to the axes of the holes 27. The axial position of the holes 30 of the sleeve 22 is selected so that when its rear position they had an opportunity of connection with the atmosphere through the flats 28 of the socket 17. In the rest of the reversible air puncher second variant is similar to the previously described.

The spool 5 reverse punch in the third embodiment (Fig-19) includes a nozzle 17, on the outer surface 19 of its front part is made annular zig-zag groove 20 (Fig). Each second cavity on the rear side of the groove 20 is displaced in the direction of the rear part of the nozzle 17 through the axial grooves 31. On the front of the nozzle 17 ov installed sleeve 22, it is also the stage 6 of large diameter spool 5. The sleeve 22 is made of two parts: the inner 32 and outer 33. The inner part 32 provided in the front flange (not labeled) for installation of radial fingers 25 and relying on him spring 24. The outer part 33 is also provided in the front flange (POS. not marked), between which and the flange of the inner part 32 posted by washer 34. The washer 34 is associated with the inner part 32 on the spherical surface, and the outer part 33 - a flat surface that forms a ball joint between the parts 32 and 33 and allows to compensate the errors of fabrication and deformation during operation. Nar is mportant part 33 is fixed to the pipe 17 by a spring ring 35 and its outer surface 23 overlaps the openings 11 in the drummer 3, forming in this way starting valve. In the rest of the air puncher on the third option is similar to the previously described.

According to the first embodiment reversible air puncher works as follows. Compressed air from source 16 (1) through the open device 15 to enable reverse punch, air manifold 14 and the valve 5 flows into the bore 4 of the striker 3, where its flow is retarded, and the static pressure in it increases.

According to the first embodiment in reverse pneumotropica (Fig.2-7) after reaching the static pressure in the bore 4 of the striker 3 values at which the value of his work in the area of the sleeve 22 (2) exceeds the force of the torque spring 24, the sleeve 22 will be moved to its rear position. This sleeve 22 moves first, straightforward, and after meeting its radial fingers 25 (7) with the left slopes of the protrusions on the rear side of the annular zig-zag groove 20, it will turn clockwise half step zigzag specified groove 20. After that, the sleeve 22 will occupy the position corresponding to the beginning of the return stroke of the striker 3 with the direct course reverse punch (figure 3), in which the radial holes 21 of the nozzle 17 will be isolated from the radial holes 27 of the sleeve 22 (figure 5). The compressed air from the bore 4 of the striker 3 across the openings 11, the groove 10 and the flats 12 flows into the front cavity 13 (Fig 1) between the housing 1 and drummer 3 with the cutting edge of the stream, steeper than the input flow to the specified bore 4. This contributes to a more reliable breakaway drummer 3 with space, that is, to the best start reverse punch. Since the area of the striker 3 from the front cavity 13 greater than its square bore 4, it will begin to move towards the rear of the chassis 1. After closing sleeve 22 of the holes 11 in the drummer 3 admission of compressed air into the front cavity 13 will cease, and it will begin the process of expanding compressed air. After passing through the holes 11 of the striker 3 rear edge of the sleeve 22 through these openings 11 and further through the holes 9 in the absorber 8 of the front cavity 13 will begin the exhaust it of compressed air into the atmosphere, and drummer 3 will continue its rearward movement by inertia. Not reaching the front end face of the nut 7 of the housing 1, the drummer 3 stops under the action of compressed air at it from the side it bore 4 will begin to move forward. After plugging the holes 11 of the sleeve 22 in drummer 3 in the front cavity 13 will compress clipped in her air, and after opening them will start receiving compressed air from the bore 4. Overcoming the back pressure from the front cavity 13, drummer 3 will strike at the art on the front of the housing 1, promoting it in the soil and thereby forming the hole. The following process is cyclically repeated. For reversing punch stop the flow of compressed air into it by installing a device 15 for inclusion (figure 1) in the "closed"position. Cut off in the system: air manifold 14 - reversible air puncher compressed air is moved at all weakening the strokes drummer 3, and the pressure in the bore 4 of the striker 3 falls. For some it is the spring 24, overcoming the back pressure on the sleeve 22 from the bore 4, will move the sleeve 22 in the forward position. This sleeve 22 in the manner described will turn a half-step zigzag groove 20 in a clockwise direction. Again include the supply of compressed air through the device 15, the sleeve 22 will be moved to the rear position, turning again to the half-step zigzag groove 20 in the same as before. The holes 27 of the sleeve 22 will align with the holes 21 of the nozzle 17 (4, 6). Sleeve 22 during its movement to the rear position will work as the locking element starting valve and open the holes 11 in the striker 3. After that, drummer 3 will begin to move back, and after entering his hole 11 in the groove 26 in the front cavity 13 will begin to enter the additional amount of compressed air. Under the action of an additional pulse from the front cavity 13 drummer 3 to expedite the military continues its rearward movement. After passing through the holes 11 of the striker 3 grooves 26 admission of compressed air into the front cavity 13 will stop, and after passing through these holes in the rear edge of the sleeve 22 of the front cavity 13 will begin the exhaust of compressed air. Due to the higher pulse from the front cavity 13 drummer 3 strikes against the front end face of the nut 7 of the housing 1, telling him the way back. After that, drummer 3 under the action of compressed air pressure in the bore 4 will begin to move forward. After passing through the holes 11 of the rear edge of the sleeve 22 in the front cavity 13 will compress clipped in her air, and after entering them into the groove 26 is compressed air in the front cavity 13. Due to the earlier compressed air into the front cavity 13 drummer 3 without hitting the front of the housing 1 and begins to move back. In this position of the parts of the reverse punch and parts drummer 3 strikes only on the rear part of the housing 1 reverse punch, causing it to make a reverse move. Further, the described process is cyclically repeated.

According to the second embodiment reversible air puncher (Fig-15) works as follows. From the starting position (Fig) under the action of compressed air from the grooves 4 of the striker 3, the sleeve 22 moves in for what her position (Fig.9, 11, 13), and the flats 28 on the pipe 17 will be aligned with the radial holes 30 of the sleeve 22.

Drummer 3 described will be driven back. After passing through the holes 11 of the striker 3 by grooves 29 through the flats 28 starts the exhaust in the cavity 13 of the compressed air. Drummer 3 in the manner described will complete its movement back and begins to move forward. After passing through the holes 11 of the striker 3 at its forward motion of the grooves 29 of the sleeve 22 will occur is described processes, and the punch will be cyclically repeated. For reversing the machine off and turned on again, the compressed air through the device 15 (Fig 1). The sleeve 22 in the manner described will be moved to the front and again in the rear position, turning on the annular step zigzag groove 20 (Fig). The orifices 21 in the nozzle 17 will align with the holes 27 in the sleeve 22, and the radial holes 30 in the sleeve 22 will be isolated from the faces 28 of the nozzle 17 (figure 10, 12, 14). After passing through the holes 11 of the striker 3 grooves 26 of the sleeve 22 in the front cavity 13 (Fig 1) will begin the process of expanding clipped it compressed air to exhaust out of it after passing through these holes in the rear edge of the sleeve 22. This results in greater expansion of the compressed air in the front cavity 13, i.e. the possibility of a smaller feed it through sky is lsoi the length of the grooves 26 of the sleeve 22 and, therefore, the lower flow rate. Drummer 3 in the manner described will strike the front end face of the nut 7 of the housing 1 (Fig 1), forcing air puncher move back. The process again is cyclically repeated.

According to a third embodiment in reverse pneumotropica (Fig-19) when the supply of compressed air through the device 15 of the outer portion 33 of the sleeve 22 by the pressure of compressed air in the bore 4 of the striker 3 through the washer 34 is pressed against the inner part 32 of the sleeve 22 and together they form a step 6 of large diameter spool 5. As described, the sleeve 22 is moved to the intermediate rear position (Fig), in which drummer 3 strikes the front of the housing 1, thereby air puncher makes a direct course. For reversing his turn off and turned on again, the compressed air in the reverse air puncher through the device 15 (Fig 1). This sleeve 22, as one first occupies the forward position, turning when described this way on the half-step zigzag ring groove 20 (Fig), and then turning the same way when sliding the fingers 25 in the axial grooves 31, will be moved to the rearmost position. The amount of compressed air supplied into the front cavity 13 increases, and drummer 3 begins to strike the front end face of the nut 7 of the housing 1 (Fig 1), the urban is vlaa reversible air puncher to make a reverse move. Due to the large displacement of the sleeve 22 to the rear there is a significant expansion of the compressed air in the front cavity 13 in the reverse course of the striker 3, which has a positive effect on reducing the consumption of compressed air. Linear and angular misalignments of the body 1 of the valve 5 and drummer 3 relatively easily compensated by the mutual slippage of the inner part 32 and the outer part 33 of the sleeve 22 on the surfaces of the washers 34.

Thus, all versions reverse punch for its reversal is not required to have a physical impact on the air manifold 14 (figure 1). When reversing the machine on the air manifold 14 also there is no power. In all cases there are no movable parts that may contact with the ground. This will improve reliability and, as a result, the durability of the reversible punch.

1. Reverse punch, punch, comprising a body located therein with the possibility of reciprocating motion of the striker with the bore in the rear, the trailing part of her stage large diameter spool, comprising fixed in the rear part of the casing pipe and trailing connected with it a spring-loaded relative to the rear casing sleeve, which coverage is otherwise the front of the pipe and is a stage large diameter spool, characterized in that on the outer surface of the tube is circular zigzag groove, and a front portion of at least one radial hole, and the sleeve has at least one radial aperture in its front part and made at least one radial finger, set with a possibility of its placement in the annular zig-zag groove of the socket.

2. Air puncher according to claim 1, characterized in that between the drummer and the valve at the front position of the first formed starting valve, which sleeve valve installed on the pipe with an overlap of the outer surface of the bushing holes in the wall of the striker, communicated with the front cavity between the casing and the drummer.

3. Reverse punch, punch, comprising a body located therein with the possibility of reciprocating motion of the striker with the bore in the rear, the trailing part of her stage large diameter spool, comprising fixed in the rear part of the casing pipe and trailing connected with it spring relative the rear part of the housing sleeve, which covers the front part of the socket and is a stage large diameter spool, characterized in that on the outer surface of the tube is circular zigzag groove and two opposite each other on the huh of the flats, offset to the rear of the nozzle relative to the made on the front of the nozzle at least one radial hole, and the sleeve has at least accordingly, both the front and rear parts of one radial hole and made at least one radial finger, set with a possibility of its placement in the annular zig-zag groove of the socket.

4. Air puncher according to claim 3, characterized in that between the drummer and the valve at the front position of the first formed starting valve, which sleeve valve installed on the pipe with an overlap of the outer surface of the bushing holes in the wall of the striker, communicated with the front cavity between the casing and the drummer.

5. Reverse punch, punch, comprising a body located therein with the possibility of reciprocating motion of the striker with the bore in the rear, the trailing part of her stage large diameter spool, comprising fixed in the rear part of the casing pipe and trailing connected with it a spring-loaded relative to the rear casing sleeve that covers the front part of the socket and is a stage large diameter spool, characterized in that on the outer surface of the tube is circular zigzag groove, and each second in the Adina this groove on the back side are displaced with respect to the other on the same side in the axial direction in the back of the socket about the same size, when this sleeve is made of at least one radial finger, set with a possibility of its placement in the annular zig-zag groove of the socket.

6. Air puncher according to claim 5, characterized in that between the drummer and the valve at the front position of the first formed starting valve, which sleeve valve installed on the pipe with an overlap of the outer surface of the bushing holes in the wall of the striker, communicated with the front cavity between the casing and the drummer.

7. Air puncher according to claim 5 or 6, characterized in that the sleeve valve is made of inner and outer parts connected by a ball joint.



 

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The invention relates to the mining industry, particularly to submersible pneumatic machines percussion, for example, when drilling large diameter

The invention relates to a device for drilling and can be used to increase the energy of a single punch, and the frequency on the rocks of middle and high strength

The invention relates to mining, mining and building and construction industries and can be used for destruction of solid rock during the drilling blasting and exploration wells drilling machines

The invention relates to the drilling of the different wells using downhole hydraulic hammers - hammers

The invention relates to directional drilling inclined and horizontal wells using downhole percussion machines and can be used in trenchless technologies of communications in complex geological structures

FIELD: mining industry and building, particularly equipment for trenchless pipe laying under roads and other engineering structures.

SUBSTANCE: device comprises rod and hollow bush connected thereto and enclosing ends of longitudinal composite reamer sections. Radial cut is formed in hollow bush. Rod is composed of sections having equal lengths. Each section comprises outer conical thread created from one section end and inner thread corresponding to outer one formed from opposite section end. Each section has annular groove with length equal to hollow bush thickness. Hollow bush cut encloses outer annular groove. Each section of composite reamer is installed on rod section and supported in two points spaced along section length. Each support point is formed as two mating hexahedrons.

EFFECT: increased structure simplicity and reliability.

4 dwg

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