RU2018760C1 - Device for withdrawal of pipe line from ground - Google Patents

Abstract

FIELD: systems for removal of pipe lines from ground. SUBSTANCE: frame of track unpowered undercarriage is formed by transverse and longitudinal beams. Mounted on frame are two U-shaped gantries with which longitudinal monorail with runner is rigidly connected. Pipe line clamping mechanism is provided with hydraulic cylinders for closing it and is secured on the runner. Hanger is made in form of semitore secured on transverse beam of frame. Pipe line keeping mechanism is made in form of two parallel hydraulic cylinders whose housing are hinged to lateral lugs of jaws of clamp gripping mechanism. Cylindrical centering mount is provided with axial hole for pipe line and movable ring with handles and equidistant balance beams. Catenoid runners are located on inner ends of balance beams whose outer ends are coupled with movable ring. EFFECT: enhanced reliability. 4 cl, 6 dwg

Description

 The invention relates to pipeline transport and can be used mainly for extracting out of service pipelines from the soil, as well as in all cases where it is necessary to extract an extended solid from the soil.

 A device for extracting pipes from the soil is known, including gripping in the form of pivoting levers having a corrugated surface at one end for coupling with the pipe and driving them to turn, is equipped with a frame with a plate, and the levers are mounted on the plate by means of racks symmetrically placed relative to the vertical axis of the frame. The ends of the levers with a corrugated surface are made rotary, and the drive of the levers is made in the form of a falling load interacting with their other ends.

 However, such devices can be used to extract pipes vertically located in the ground.

 The closest to the invention in technical essence and the achieved result is a system for extracting and cleaning the pipeline, consisting of an engineless caterpillar chassis equipped with a coupling device with a tractor, the chassis frame is formed of removable cross members and two longitudinal beams made elongated beyond the overall size of the chassis in the direction of the tractor, while the trolley suspension is placed between the longitudinal beams of the frame, and the cleaning agent between their extensions.

 A disadvantage of the known system is the formation of significant bending stresses in the pipeline during extraction and the need for loosening soil above it.

 The purpose of the invention is the possibility of use in hard-to-reach places (at intersections with other underground pipelines, electric cables, roads, in swamps); elimination of bending stresses in the pipeline and the exclusion of earthwork for loosening soil above it.

 This is achieved by the fact that the device for extracting the pipeline from the ground is equipped with transverse two U-shaped portals mounted on the frame, a mechanism for pulling out the pipeline and a clamping mechanism, which is equipped with its closing hydraulic cylinders and is mounted on the roller. The suspension is made in the form of a centralizer mounted on the transverse beam of the frame.

 The mechanism of pulling out the pipeline is made in the form of two hydraulic cylinders parallel to the pipeline, the bodies of which are pivotally mounted on the transverse beam of the frame, and the rods are pivotally connected to the side ears of the jaws of the clamping mechanism.

 The centralizer, which serves to provide orientation and movement of the pipeline, is made cylindrical with an axial hole for the pipeline, equipped with a movable ring with a handle and equal balancers, on the inner end of which there are catenoid rollers, and the outer ends are coupled to the movable ring.

 Figure 1 shows the device in a position ready for extraction of the pipeline, a General view; figure 2 - node connecting the hydraulic cylinders with a monorail; in FIG. 3 - clamping mechanism, general view; figure 4 is a centralizer, an end view; figure 5 is the same plan; Fig.6 is a section aa in Fig.5.

 A device for extracting a pipeline from the soil includes a frame consisting of two longitudinal beams 1 and 2, interconnected by front and rear portals 3 and 4, which in the upper part are rigidly interconnected by a longitudinal monorail 5 made of an I-beam. A slot 6 is made in the monorail for movement of the running roller 7, to the axis of which the bodies of the hydraulic cylinders 8 and 9 are pivotally connected. The rods of the latter are pivotally connected to the upper ears 10 and 11 of the clamping mechanism 12, which consists of two pivotally connected to each other in the upper part of the jaws. In this case, the inner walls of the jaws of the clamping mechanism are serrated for better adhesion to the pipe.

Hydraulic cylinders 16 and 17, located parallel to the pipe 15, are pivotally mounted by the body on the transverse beam 18 of the frame, and retractable rods for the ears 19 and 20 of the jaws of the clamping mechanism. In the middle of the transverse beam 18, the centralizer 21 is rigidly fixed, providing orientation and movement of the pipe 15 and consisting of a cylindrical body 22 with an axial hole for the pipeline. On both ends of the body at an angle of 120 ° ^with respect to each other, mounting axles 23 are mounted for bolting the cover 24. Between the body 22 and the cover 24 there is a movable ring 25 with a handle 26 rigidly attached to it. the inner ends of which there are supporting catenoid rollers, and the outer ends are engaged with the movable ring 25.

 The device is equipped with anchor racks to anchor it during operation. By covering the tracked chassis, the device can be mounted on pontoons.

 Removing the pipeline using the device is performed without opening the trench with an excavator. After clarifying the location and depth of the recoverable pipeline along the latter, mounting pits (pits) are rummaged at certain distances from each other. The pipe on these pits is cut off from the highway and at one end by means of a traction means (for example, a pipe-laying crane) is lifted and passed through a weakened clamping mechanism 12 and a centralizer 21. At the same time, the centralizer arms 26 are pressed towards each other, as a result of which the rollers 28 extend along the diameter of the extracted pipeline. The rods of the hydraulic cylinders 8 and 9 are extended and the jaws 13 and 14 of the clamping mechanism 12 are closed, covering and clamping the pipeline. If necessary, the device is anchored by anchor posts. After that, the horizontal hydraulic cylinders are triggered as they retract the rods of which, the pipe is pulled out of the ground.

 The cycle is repeated many times. As you remove the pipe is cut into pieces of the required length. It is especially advisable to use the proposed device for dismantling pipelines in hard-to-reach places - at intersections with other underground pipelines, electric cables, roads, when dismantling underground pipelines in swamps.

 When dismantling pipelines in swamps, you can do without the preparation of pits. In this case, locally, the segments of the extracted section from the main highway stretch the cable under the pipeline using a special device, then they lift it with lifting means and cut it off. The filling of the pipeline into the device and pulling out are performed similarly.

 The proposed device can be used in hard-to-reach places, provides extraction of the pipeline without first loosening soil above it, eliminating the formation of bending stresses in the wall of the pipeline.

 The device is designed to extract pipelines of various diameters (114-530 mm) from the ground, for which replaceable clamping mechanisms are provided. The proposed technical solution reduces the amount of earthwork, increases labor productivity and improves environmental protection.

Claims (4)

 1. DEVICE FOR REMOVING A PIPELINE FROM SOIL, containing a non-motorized caterpillar chassis, the frame of which is formed by longitudinal and transverse beams, a pipeline suspension with support rollers, characterized in that it is equipped with two U-shaped portals mounted transversely on the frame and rigidly connected to them by a longitudinal monorail with a running roller, a mechanism for pulling out the pipeline and a mechanism for clamping it, the latter being equipped with hydraulic cylinders for its closure and mounted on the running roller, and the suspension is made in the form of a chain trattoria, fixed on the crossbar of the frame.  2. The device according to claim 1, characterized in that the clamping mechanism of the pipeline is made in the form of covering the pipeline and pivotally connected in the upper part of the jaws provided with upper and side ears, the cylinder rods are pivotally connected to the upper ears of the jaws, and the cylinder bodies are pivotally connected to the axis running roller.  3. The device according to claim 1, characterized in that the pulling mechanism is made in the form of two hydraulic cylinders parallel to the pipeline, their bodies are pivotally mounted on the transverse beam of the frame, and the rods are pivotally connected to the side ears of the jaws of the clamp gripping mechanism.  4. The device according to p. 1, characterized in that the centralizer is cylindrical with an axial hole for the pipeline, equipped with a movable ring with a handle and equal balancers, and the support rollers are catenoid and placed on the inner ends of the balancers, the outer ends of which are coupled to the movable ring.

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