SU1550050A1 - Installation for trenchless pipe-laying in soil - Google Patents

Abstract

The invention relates to mining and construction, and in particular to devices for trenchless laying of pipelines. The purpose of the invention is to increase the efficiency of laying pipelines. The developing body is made in the form of pneumatic punches 4 with pillars. The latter are located in the knife part 2 of the housing 1 along its perimeter with the possibility of axial movement. The air in the pneumatic punches 4 is supplied by means of a hollow shaft 13 and a distribution manifold 21 fixed on it. The pneumatic punches are grouped or alternately inserted into the bottom and destroy the soil. The latter is transported by a screw conveyor 3. The housing 1 and the pipeline are inserted into the massif following the pneumatic punches by means of jacks. Due to the advancement of a certain group of pneumatic punches, an adjustment of the direction of the gasket is possible. 2 Il.

Description

The invention relates to mining and construction, and in particular to devices for trenchless laying of pipelines.

The purpose of the invention is to increase the work efficiency when laying extended pipelines.

FIG. 1 shows the installation, allowed; in fig. 2 - the same, front view.

The installation for the trenchless laying of pipelines comprises a housing 1 with a blade part 2, a screw conveyor 3 and a body developing in the form of pneumatic breakers 4 rigidly attached to timbres 5 and placed in the knife portion 2 along its perimeter. The body 1 along the contour has longitudinal guide protrusions 6 rigidly attached to the body 1, which may have a shell 7, between which shandors 5 are placed on the longitudinal guide protrusions 6 by means of the projections 8 movably along the axis of the installation.

The screw conveyor 3 consists of a cylindrical body 9 with a cylindrical screw 10 and a conical part 11 of the body with a conical screw 12, Screws 10 and 12 are mounted on the shaft 13, which is made hollow, for example, from pipes and at its end on the side of the bottom 14. The tip 14 and the thoria of the conical screw 12 are equipped with cutting elements to facilitate the development of the bottom. The conical part 11 of the auger conveyor body 3 at the installation site of the pneumatic punches 4 is made with a cut-out 15, which repeats the contour of the pneumatic probes body. The cylindrical body 9 of the screw conveyor 3 is rigidly connected to the shell 7 by the wall 16. Thus, the shell 7, the cylindrical body 9, the conical part 11 of the body of the screw conveyor 3 and the wall 16 form an airtight chamber 17, which through holes 18 is connected to the internal cavity of the screw conveyor 3.

The shaft 13 is attached to the body E of the conveyor by means of horizontal 19 and vertical 20 ribs. The need to install vertical ribs 20 in the upper part of the housing of the screw conveyor 3 is due to the fact that they do not prevent the soil from being transported by the screw 10. A distribution manifold 21 is mounted on the shaft 13. The shaft 13 is installed with the possibility of rotation of the relative distribution manifold 21 by means of bearings 22. Distributive the collector 21 is made in the form of an annular channel 23, on one side connected to an installation for supplying compressed air through the hollow shaft 13, and holes 24, made on Tenkai shaft 13. The horizontal and vertical ribs 19, 20 are provided with channels 25 for supplying compressed

air to the pneumatic probes 4. To allow the compressed air to be distributed through the corresponding pneumatic probes 4 on the outer surface of the cylindrical body 9, an additional distribution manifold 26 is installed, from which compressed air flows to each pneumatic piercer 4 through flexible hoses 27 through the distributor element 28, for example, controlled valve or any other distribution equipment with remote control. In distribution manifold 21, seals 29, 30 are installed to prevent compressed air from leaking out and to prevent contamination of bearing 22.

The need to install an additional collector 26 is due to the fact that it is impossible to conduct pipelines directly to each pneumatic punch 4 directly from the distribution collector 21, as they will impede the transportation of soil.

The exhausted compressed air from the pneumatic punches 4 is discharged from the chamber 17 through the holes 18 into the auger conveyor, which simultaneously improves the transporting capacity of the auger conveyor 3, and in the case of clogging the auger conveyor 3 over the entire cross section and the impossibility of further movement of the unit when applying compressed air to the pneumatic punches 4 will flow through the holes 18 into the cavity of the screw conveyor 3 and eliminate the congestion that has formed.

The installation works as follows.

Compressed air flows through the hollow shaft 13 and through the holes 24, the annular channel 23, the channels 25, the additional distribution manifold 26, the distribution elements 28 and the flexible hoses 27 to the hammers 4, which are included in the operation. If it is necessary to move in the rectilinear direction, all pneumatic punches 4 are activated, and in the event that a change in the direction of movement of the installation is necessary, a certain group of pneumatic probes 4 (upper, lower, right or left group of pneumatic punches) is activated. In the course of the movement, the pneumatic punches 4 together with them simultaneously move the pins 5 rigidly attached to them, penetrating into the ground. Shandors 5 can also have sharp cutting edges on the hinge side for better insertion.

When the tips of pneumatic punches 4 and shandors 5 are inserted under the action of axial force, the latter expands partly to the sides through the side surfaces of the conical tips of pneumatic punches 4 and the pointed cutting edges of the lateral surfaces 5. The walls of the formed workings are sealed ( not all pneumatic punches 4 may be involved, but in turn)

After the pneumatic punches 4 are advanced with the pivots 5, the process of excavating the cutting elements of the conical screw 12 begins at the appropriate distance, and at the same time the housing unit installed in the pit pushes the casing 1 together with the reinforced concrete pipes or any other lining of the resulting tunnel in the direction of the slab. Shandors 5 are pushed into the cavity formed by the housing 1 and the shell 7 along the guides 6. Simultaneously with this tapered screw 12 and cylindrical screws 10, the ground is given from the bottom. After the termination of the development of the ground and the movement of the installation body 1 to the advancement of the pneumatic punches 4, the cycle is repeated.

After advancing the installation at a distance corresponding to the length of the pipe of the laid pipeline, a new pipe is installed between the jacking installation and the installed and retractable pipe.

0

five

0

five

for subsequent punching pipelines to a length corresponding to the length of the pipe

When installing the next assembled pipe, the pipeline being built inside it is used to place a section of the cylindrical body 9 with the screw 10 and fix it to the previous section of the body 9 and the screw 10

Claims (1)

Invention Formula A trenchless pipe laying installation, comprising a housing with a blade part, developing a body, a conveyor with conical and cylindrical screws and a shaft on which screws are attached, characterized in that, in order to increase the efficiency of laying pipelines, it is provided with a distribution manifold and the shaft is hollow, while the developing organ is made in the form of pneumatic punches with pivots placed in the knife part of the body along its perimeter with the possibility of axial movement, m manifold is mounted on the shaft for supplying compressed air to the pneumatic chisels 6 one