RU2345266C1 - Device for trenchless pipelaying by method of punching - Google Patents

Abstract

FIELD: construction, pipeline.

SUBSTANCE: invention is related to construction of pipeline transport and is designed for trenchless pipelaying by method of punching. Hollow working tip of tapered shape is hingedly connected to rod fixed in flange mounted on the front end of laid pipeline relative to direction of punching. Unbalanced vibrator of circular vibrations is installed inside hollow working tip on rotary supports. Supplying mechanism and vibrator drive are installed in laid pipeline. Vibrator drive is equipped with gear transmission, on output shaft of which carrier is installed and connected to unbalanced vibrator.

EFFECT: higher reliability and efficiency of device operation.

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Description

The invention relates to construction, and in particular to devices intended for trenchless laying of pipelines by a puncture method, and may find application for concealed transitions in the construction of pipelines, underground cable communication lines and power lines.

A device is known for trenchless laying of pipelines by a puncture method, comprising a conical hollow working tip connected through a hinge and a rotation support to a rod fixed in rotation supports on a flange mounted on the front end of the pipe being laid in the direction of the puncture, a vibrator drive installed in the pipe being laid and connected to the rod, a circular vibrator, made in the form of a roller, resting on the inner surface of the hollow working tip, in the saw connecting the roller axis with the rod, and the feeding mechanism [1].

The closest to the expected technical essence and the achieved result is a device [2] for trenchless laying of pipelines by a puncture method, containing a hollow conical working tip connected through a hinge and a rotation support to a rod fixed in rotation supports on a flange mounted on the front the direction of the puncture the end of the laid pipeline, a vibrator drive installed in the laid pipeline and connected to the rod, a circular vibrator, made minutes as the unbalance having the shape of a sector of a hollow cylinder fitted inside the hollow of the tip on the rotation bearings, a carrier connecting the eccentric weight with the rod, and a feed mechanism.

The most loaded element of the known device is a rotation support connecting the rotating rod with a conical working tip. The high speed of rotation of the rod and a significant load on the working tip lead to the rapid failure of the rotation support. Improving the reliability of the support by increasing its size leads to a shift in the center of oscillation of the working tip from the top of the cone, resulting in a decrease in the efficiency of the device - increase the energy consumption and puncture force.

The purpose of the invention is to increase the reliability and efficiency of the device. To achieve this goal, the rod is fixedly mounted on the flange, and the vibrator drive is equipped with a gear transmission, on the output shaft of which there is a carrier connected to an unbalance.

Figure 1 presents a device for trenchless laying of pipelines by a puncture method, General view; figure 2 is the same, a top view; figure 3 is a section of the head of the device.

A device for trenchless laying of a pipeline by a puncture method comprises a laid pipe 1, on the front end in the direction of the puncture of which a flange 2 is fixedly mounted, on which the rod 3 is fixedly mounted. On the rod 3 is mounted a ball bearing 4, on which a hollow conical working tip 5 is supported. Inside a hollow working tip 5 on the bearings of rotation 6, an unbalance 7 is installed, which has the shape of a sector of a hollow cylinder, and through a slot 8 on its end side is connected to a carrier 9 mounted on dunce toothed wheel 10 which, via a gear train 11 and the gear 12 is connected to the motor 13 installed in the pipeline 1. The seal 14 prevents soil from entering inside of the tip 5.

The feed mechanism consists of a guide frame 15 with horizontal 16 and vertical 17 guide rollers, movable 18 and fixed 19 traverses, rope 20 and traction winch 21.

The power of the electric motor 13 of the vibrator drive is carried out through the cable 22.

To carry out the puncture, the traction winch 21 and the vibrator drive motor 13 are turned on, which drives the gear wheel 10 with the carrier 9 through the gear 12 and the gear block 11, which through the slot 8 engages the unbalance 7. The disturbing force arising from the rotation of the unbalance through the bearings rotation 6 is transmitted to the working tip 5, which, together with the unbalance, performs circular oscillations with a frequency equal to the rotation frequency of the carrier 9, perpendicular to the direction of penetration. The slot 8 on the end side of the unbalance 7 provides a movable connection with the carrier and does not impede circular vibrations of the working tip 5 relative to the fixed flange 2 with the rod 3. The center of oscillation of the working tip 5, i.e. the point at which the oscillation amplitude is zero coincides with the reference hinge 4. With distance from it, the amplitude increases and reaches a maximum on its cylindrical part. The working tip 5, rolling around the surface of the well, causes oscillations of the soil in the radial direction, which helps to reduce the friction and adhesion forces in it and, as a result, reduce the resistance and increase the speed of laying the pipeline 1.

The fixed mounting of the rod on the flange and equipping the vibrator drive with a gear drive, on the output shaft of which a carrier connected to an unbalance is installed, allows the load connecting the rod connecting the rod to the conical working tip to be released from a high rotation speed and, therefore, to improve the working conditions of the hinge, because . the sliding speed of the mating surfaces in comparison with the prototype is negligible and is associated only with circular vibrations of the working tip relative to the fixed rod under the action of the disturbing unbalance force.

This will make the support more reliable and compact, bringing the center of oscillation of the working tip closer to the top of the cone, resulting in increased reliability and efficiency of the device.

Information sources

1. Patent 2190728 Russian Federation, IPC E02F 5/18. A device for trenchless laying of pipelines by a puncture method. Romakin N.E., Romakin D.N., Zemskov V.M .; applicant and patent holder Institute of Technology, Technology and Management of SSTU (RU); declared 03/05/01; publ. 10/10/02, Bull. Number 28.

2. Patent 2249083 Russian Federation, IPC E02F 5/18, F16L 1/028. A device for trenchless laying of pipelines by a puncture method. Romakin N.E., Romakin D.N., Krasnoludsky N.V .; applicant and patent holder of SSTU (RU); declared 12/05/02; publ. 03/27/05, Bull. Number 9.

Claims (1)

A device for trenchless laying of pipelines by a puncture method, comprising a conical hollow working tip connected through a hinge to a rod fixedly mounted on a flange that is mounted on the front end of the pipeline being laid in the direction of the puncture, a circular vibrator in the form of an unbalance having the shape of a hollow cylinder sector, installed inside the hollow working tip on the rotation bearings, a vibrator drive installed in the laid pipeline, a carrier and a feeding mechanism, characterized in that the vibrator drive is equipped with a gear transmission, on the output shaft of which a carrier is connected, connected to an unbalance.

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