Trenchless pipeline replacement device

FIELD: machine building.

SUBSTANCE: device includes a pipe-destructing working element with two disc knives, a reamer for enlarging the well diameter, an attachment device of a new plastic pipeline and a tie-rod element in the form of a rope with elements installed on it. Each element installed on the rope is made in the form of a detachable sleeve with three equally spaced radially oriented cylindrical rods, in each of which a fork with a ball is installed so that fixed radial movement is possible. A radial slot is made throughout the length of detachable sleeve between adjacent cylindrical bars; a retaining screw is inserted in a threaded hole in the middle of the above radial radial slot. The pipe-destructing working element is made in the form of an assembled two-section framework, the centre of the rear end face of which has a spherical slot. The reamer is made in the form of an assembled two-section flattened cone, the centres of both end faces of which have spherical slots The rear end face of the pipe-destructing working element and the front end face of the reamer are connected by means of a hinge joint consisting of a pin, on both ends of which balls are installed by means of a thread The rear end face of the reamer and the attachment device of a new plastic pipeline are connected by means of a hinge joint consisting of an additional pin, on one end of which a ball is installed by means of thread and inserted in the spherical slot of the rear end face of the reamer, and the other end of the additional pin is installed in an axial hole of the attachment device of the new pipeline and fixed with a nut

EFFECT: improving reliability of hinge joints and a tie-rod element at passage of curved sections of pipelines.

9 dwg

 

The invention relates to the construction of production and can be used for the trenchless replacement of pipelines in the repair and reconstruction of underground utilities.

A device for the trenchless replacement of pipelines [RF patent №2349823, IPC F16L 1/00, publ. 20.03.2009,] containing Taborstrasse working body with two circular knives, which is installed with the possibility of rotation of the two shoulders of the lever with two supporting rollers, expander to increase the diameter of the hole and the traction element. Taborstrasse working body connected to the extender and traction hinge element.

The disadvantage of this device is a high probability of getting stuck when passing through a curved pipe sections.

The closest technical solution, selected as a prototype, is a device for the trenchless replacement of pipelines [RF patent №2374546, IPC F16L 1/028, publ. 27.11.2009,] containing Taborstrasse working body with two circular knives, set against each other, the expander to increase the borehole diameter, the device for fastening a new plastic pipe and traction element made in the form of a cable with installed elements, which are located at three equidistant from each other ball rotatably in the all directions. Taborstrasse working bodies, extenders, to increase the diameter of the hole and the fastener of the new plastic pipe sequentially interconnected by hinges.

A disadvantage of this device is a high probability of failure elements with balls installed on the cable when winding them on the winch. In addition, the hinge connection between trousersnake working bodies and extenders have low reliability in strength.

The objective of the invention is to increase the reliability of the pass device curvilinear sections of pipelines in the process of trenchless replacement.

The technical result of the invention is to improve the reliability of hinge joints and traction element when passing through a curved pipe sections.

The task is to solve the technical result is achieved in that the device for the trenchless replacement of pipelines containing Taborstrasse working body with two circular knives, set against each other, the expander to increase the diameter of the hole, a device for fastening a new plastic pipe and traction element made in the form of a cable with installed elements, which are located at three equidistant from each other bulb with who is the very useful for rotation in all directions, according to the invention, each component mounted on the rope, made in the form of a removable sleeve with three equidistant radially oriented cylindrical rods, each of which, with the possibility of a fixed radial movement installed plug with a ball the full length removable sleeve between adjacent cylindrical rods made radial groove in the middle of which a threaded hole is inserted the locking screw, and on the surface of the removable sleeve radial groove is located equidistant relative to the adjacent cylindrical rods, Taborstrasse work the body in the form of prefabricated two-section frame, the center of the rear end of which has a spherical groove, the expander is made in the form of a prefabricated two-piece truncated cone, the centers of both end faces of which have spherical grooves in the center of the fixture for mounting the new plastic pipe is made of the axial hole, the rear end trubarevo working body and the front face of the expander is connected through a swivel comprising studs on both ends through which the thread is set balls inserted in the spherical grooves in the rear and front ends trubarevo working body and expander, respectively, the rear end of the expander and the lighting is for mounting the new plastic pipe are connected by a swivel, consisting of additional studs at one end through which thread has the ball, is inserted in the spherical groove of the rear end of the expander and the other end additional studs mounted in the axial hole of the fixture for mounting the new pipeline and fixed by a nut.

Execute for each element that is installed on the cable, in the form of a removable sleeve on the entire length of which is a radial groove, designed to simplify and speed up the Assembly/disassembly of the data elements on the cable at the required distance from each other, and also to reduce the likelihood of damage to these elements with the winding of the rope.

For fixation of removable sleeve on the cable in the middle of the radial groove in the screw hole fixing screw inserted.

Due to the fact that on the surface of the removable sleeve radial groove is located equidistant relative to the adjacent cylindrical rods also simplifies and accelerates the mounting/Dismounting of the removable sleeve on the cable.

Installation with the possibility of a fixed radial movement of the fork, which rotatably in all directions is a ball in each of the three equidistant radially oriented cylindrical rods removable sleeve, ensures the equality of the distances from the center of the removable sleeve to the surface of the balls in contact with the internal surface is rnostly old pipeline, and the inner radius of the old pipe (inner radius of the old pipeline is equal to half the internal diameter). This provides a stable arrangement of elements installed on the cable, in the old pipeline, prevents contact of the cable with the inner wall surface of the old pipe, eliminates possible chafing of the cable and reduces the resistance to movement of the device when passing through a curved pipe sections.

The hinged connection between the rear end trubarevo working body and the front end of the dilator consisting of a stud on both ends through which the thread is set balls inserted in the spherical grooves in the rear and front ends trubarevo working body and expander, respectively, has the ability to rotate in different directions, which improves the reliability and maneuverability of the device when passing through a curved pipe sections.

The hinged connection between the rear end of the expander and a device for mounting a new plastic pipe, consisting of additional studs at one end through which thread has the ball, is inserted in the spherical groove of the rear end of the expander and the other end additional studs mounted in the axial hole lighting is obline for mounting the new pipeline and fixed nut, provides the ability to rotate in different directions of the ball, is inserted in the spherical groove of the rear end of the expander and reliable fixing of the other end of the additional studs mounted in the axial hole of the fixture for mounting the new pipeline.

Figure 1 shows the proposed device for the trenchless replacement of pipes (longitudinal section); figure 2 - section a-a in figure 1; figure 3 is a view W figure 2; figure 4 is a cross-section B-B in figure 1; figure 5 - section b-b In figure 1; figure 6 - section G-g of figure 1; figure 7 - section d-D in figure 1, Fig - section e-E in figure 1; figure 9 - the proposed device for the trenchless replacement of pipelines when passing through a curved pipe section (longitudinal section).

A device for the trenchless replacement of pipelines includes a traction element, Taborstrasse working body, made in the form of precast cylindrical two-piece frame extender, made in the form of precast double-section of a truncated cone, and the device 1 for securing new plastic pipe 2 (Fig 1).

The traction element is designed in the form of a cable 3 with installed prefabricated elements. Each precast element mounted on the cable 3, is designed as a removable sleeve 4 with an axial hole 5 and with three equidistant radially oriented cylinder is ical rods. In each equidistant radially oriented cylindrical rod removable sleeve 4 by means of a threaded connection with a fixed radial movement installed the plug 6 with the ball 7. The balls 7 are located in forks 6 to rotate in all directions. The center of the precast element is the center of the removable sleeve 4. The distance from the center of the collecting element mounted on the cable 3, to the surface of the balls 7 in contact with the inner surface of the old pipe 8, is called the departure and equal to the radius of the inner surface of the old pipe 8.

As can be seen in figure 2, the removable sleeve 4 has a Y-shaped cross-section. The full length removable sleeve 4 between adjacent cylindrical rods made of the radial groove 9, in the middle of which a threaded hole is inserted the locking screw 10 (Fig 3). And on the surface of the removable sleeve 4 radial groove 9 is located equidistant relative to the adjacent cylindrical rods.

As can be seen in figure 4, Taborstrasse working body contains two identical semi-cylindrical sections 11 and 12. Sections 11 and 12 are connected to the mirror relative to each other in the horizontal plane a-a by means of bolts 13, the ends of which are hidden in the grooves. In the vertical plane b-b sections 11 and 12 are made grooves in which the axes installed al the g against the other disc blades 14 and 15, respectively.

As can be seen in figure 5, in the horizontal plane, the rear end trubarevo working body has an axial spherical groove 16, consisting of two hemispherical axial grooves made in the rear ends of the sections 11 and 12.

As can be seen in figures 6 and 7, the expander includes two identical sections 17 and 18. Sections 17 and 18 are connected to the mirror relative to each other in a horizontal plane by means of bolts 19, the ends of which are hidden in the grooves. The front and rear ends of the expander are axial spherical grooves 20 and 21 respectively. Axial spherical groove 20 consists of two hemispherical axial grooves made in the front ends of the sections 17 and 18, and the axial spherical groove 21 two hemispherical axial grooves made in the rear ends of the sections 17 and 18.

In the center of the device 1 for securing new plastic pipe 2 has an axial hole 22 (Fig).

The front face trubarevo working body connected to the cable 3 by means of hinges 23, fixed symmetrically to the axis of symmetry of the device on the front ends of the sections 11 and 12 (figure 1).

The rear end trubarevo working body and the front face of the expander are connected through swivel consisting of a stud 24 on both ends through which the thread set the balls 25 and 26. The balls 25 and 26 inserted in the spherical the elements 16 and 20 in the rear and front ends trubarevo working body and expander, respectively. The diameters of the rear and front ends trubarevo body and expander are equal.

The rear end of the expander and a device 1 for securing new plastic pipe 2 are connected by a swivel, consisting of additional studs 27 on one end through which thread has the ball 28 and at the other end made the thread. The ball 28 is inserted in the spherical groove 21 of the rear end of the extender. The other end of the additional pins 27 mounted in the axial hole 22 of the device 1 for fixing the new pipeline 2 and fixed by a nut 29 (Fig.7). The diameter of the rear end of the expander is larger than the diameter of the front end of the dilator and equal to the diameter of the device 1 for fixing the new pipeline 2.

The device operates as follows.

The device is placed in one of the pits and carry out its Assembly.

In the grooves of the sections 11 and 12 mounted on the axes of the rotary blade 14 and 15, respectively.

On both ends of the studs 24 by carving set balls 25 and 26 and at one end of the additional studs 27 - ball 28.

In a hemispherical groove made in the rear end section 11 trubarevo working body, place the ball 25 with the pin 24, and a hemispherical groove made in the front end section 17 of the dilator, balloon 26 with the pin 24. At the same time in a hemispherical what AZ, made in the rear end of the extender, put the ball 28 with additional stud 27, the other end with a thread which is mounted in the axial hole 22 of the device 1 for fixing the new pipeline 2 and fixed by a nut 29. The device 1 connect the new pipeline 2 screws.

Section 11 trubarevo working body section 12 connects the mirror relative to each other in the horizontal plane a-a by means of bolts 13 so that the rear end trubarevo working body had axial spherical groove 16, into which is inserted a ball 25 with the pin 24, and a rotary blade 14 and 15 were installed in the vertical plane b-b opposite each other (figure 4).

At the same time the section 17 of the expander with section 18 connects the mirror relative to each other in a horizontal plane by means of bolts 19 so that the front and rear ends of the extender had axial spherical grooves 20 and 21, in which is inserted a ball 26 with the pin 24 and the ball 28 with additional stud 27, respectively.

Then assemble the components that are installed on the cable 3. In each equidistant radially oriented cylindrical rod removable bushing 4 by threaded connection with a fixed radial movement install the plug 6 with the balls 7. Then through old is Truboprovod 8 from another pit skip rope 3, at the required distance from each other install prefabricated elements. The wire 3 is passed through the radial groove 9 to its alignment with the axial hole 5 removable sleeve of each precast element. Each prefabricated element is fixed on the cable 3 by means of the clamping screw 10 inserted into a threaded hole in the middle of the radial groove 9 removable sleeve 4.

When assembling the components that are installed on the cable 3, the range must be equal to the inside radius of the old pipeline 8. A number of removable bushings 4 depends on the complexity of curvilinear sections of pipelines. The greater the number of turns and bends of the pipe, and the importance of their curvature, the need more removable sleeves 4.

Then passed through the old pipe 8 cable 3 connected by means of hinges 23 drubertragen working body.

Further include a winch (figures not shown). It is through installed on the cable 3 prefabricated elements, which roll on the inner surface of the old pipe 8 through the balls 7, starts statically (unstressed) tightening device in the old pipeline 8. During movement of the device inside the old pipe 8 disc blades 14 and 15 trubarevo working body share cut the old pipe 8 into two parts. The extender deforms and wdvl is pointed at the ground cut the old pipe 8, what is the formation of a new well with a larger diameter. At the same time the expander is formed in the well tighten the fixture 1 with a fixed new plastic pipe 2.

Curvilinear section of the old pipe 8 precast components installed on the cable 3, overcome by mounting the balls 7 in forks, 6 removable sleeves 4 with the ability to rotate in all directions. Due to the fact that the departure of prefabricated elements installed on the cable 3, is equal to the inside radius of the old pipeline 8, when moving along the curved section of the old pipe 8 cable 3 is not in contact with the inner wall surface of the old pipe 8 (Fig.9). This eliminates possible chafing of the cable 3 and decreases the resistance to movement of the device.

When passing through a curved section of the old pipe 8 ball 25 with the pin 24 rotates and turns in the axial spherical groove 16 of the rear end trubarevo working body, thereby allowing passage of the curved pipe section 8 drubertragen working body. Followed by a curved section of the old pipe 8 passes extender by rotation and rotation of the ball 26 with the pin 24 and the ball 28 with additional stud 27 in the spherical grooves 20 and 21 respectively. the moreover, rotation and rotation of the ball 28 with additional stud 27 in the spherical groove of the rear end of the extender provides passing the curved section of the old pipe 8 of the device 1 for fixing the new pipeline 2.

As a result of use of the claimed device you can perform a trenchless replacement of pipelines with bends up to 90 degrees.

The proposed device for the trenchless replacement of pipelines will increase the reliability passing through curved pipes.

A device for the trenchless replacement of pipelines containing Taborstrasse working body with two circular knives, set against each other, the expander to increase the borehole diameter, the device for fastening a new plastic pipe and traction element made in the form of a cable with installed elements, which are located at three equidistant from each other ball rotatably in all directions, characterized in that each element mounted on the rope, made in the form of a removable sleeve with three equidistant radially oriented cylindrical rods, each of which, with the possibility of a fixed radial movement installed plug with ball full-length removable sleeve between adjacent cylindrical what argname a radial groove, in the middle of which a threaded hole is inserted the locking screw, and on the surface of the removable sleeve radial groove is located equidistant relative to the adjacent cylindrical rods, Taborstrasse work the body in the form of prefabricated two-section frame, the center of the rear end of which has a spherical groove, the expander is made in the form of a prefabricated two-section of a truncated cone, the centers of both end faces of which have spherical grooves in the center of the fixture for mounting the new plastic pipe is made of the axial hole, the rear end trubarevo working body and the front face of the expander is connected through a swivel comprising studs on both ends through which the thread is set balls inserted in the spherical the grooves in the rear and front ends trubarevo working body and expander, respectively, the rear end of the expander and a device for mounting a new plastic pipe are connected by a swivel, consisting of additional studs at one end through which thread has the ball, is inserted in the spherical groove of the rear end of the expander and the other end additional studs mounted in the axial hole of the fixture for mounting the new pipeline and zafy is financed by a nut.



 

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4 dwg

FIELD: construction.

SUBSTANCE: device comprises a frame rigidly fixed as inclined in a working pit, where a driven pipe is laid. Sleds move along the frame, where a driving plate is installed as capable of rotation in three coordinates and movement along the transverse direction, with the help of which the vector of force application to the pipe end changes directionally. The device is equipped with a pipe clip, which makes it possible to do driving using a technology of tunnelling by a microshield, and also with an adjustable front roller support to ensure alignment of welded pipes.

EFFECT: device is designed to go through curvilinear sections of a route using previously bent pipes with a specified radius of curvature, which substantially increases efficiency of tunnelling due to reduction of length of curvilinear section tunnelling.

6 cl, 3 dwg

FIELD: construction, applicable for trenchless laying and replacement of underground pipe-lines.

SUBSTANCE: a reciprocating striker is positioned in the casing of the pneumatic percussion mechanism. The air-distributing system of the mechanism includes the front and rear working chambers, inlet and exhaust valves and a fixture for closing and opening of the exhaust channels made in the form of a spring-loaded end face stopper coupled to a tractive member. At actuation of the pneumatic percussion mechanism, before the supply of compressed air, the exhaust channels are closed, they are opened after the inner cavities of the pneumatic percussion mechanism are filled with compressed air.

EFFECT: provided automatic cyclic action of the pneumatic percussion mechanism.

3 cl, 3 dwg

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