Abstract:
An extractor for removing agricultural tubing from soil of a field and related methods are provided. The extractor includes a frame and a pivot frame disposed on the frame. The pivot frame can have a pivot axis around which at least a portion of the pivot frame is pivotal. The extractor can include a first roller secured to the frame and a second roller secured to the pivot frame that is moveable by the pivot frame with the first roller being positioned closer to the soil than the second roller so that a tubing to be extracted is threadable under the first roller and over the second roller.
Abstract:
In the case of a method for laying pipelines (1) in the ground (2), a drill-hole (4) is produced along a laying line (6), from a starting pit (5) to a target pit (7), by a drilling head (3) at the start of a pipeline (1), the drilling head (3) being connected to a laying vehicle (9) on the ground surface (10) via a narrow vertical connecting device (8). The soil dislodged by the drilling head (3) is removed from the drill-hole (4) and conveyed to the surface. The force required for the drilling and laying operation is applied by the laying vehicle (9) and/or by a feed device (12) in the starting pit (5).
Abstract:
A pipeline insertion system (100) may include an insertion device (102) outside a tunnel that includes an insertion device frame (104) and a movable clamp device (106) in slidable engagement with the insertion device frame. A drive may cause the movable clamp device engaged with a pipeline to move between a first position (108) and a second position (110) along the frame. Inside the tunnel, the system may also include a plurality of support frames (118) remote from the insertion device and remote from each other which support the pipeline on bearings as the pipeline is pushed (or pulled) by the insertion device through the bores of a plurality of housing segments (122) mounted in the tunnel. A controller (126) is operative to control the drive and the movable clamp device responsive to transducers which measure pipeline slippage, thrust force, and clamping pressure.
Abstract:
In a method and an apparatus for replacing old underground conduits (4), the old conduit (4) is first laid bare with the aid of a ground drilling device (8) with an overdrilling head and then, in turn, a new conduit (5) is drawn in with the aid of the drill rods (7) and at the same time—in a uniform operating step—the old conduit is pulled out of the ground.
Abstract:
A technique for aiding an underground communications cable installer in the installation such cable in underground utilities neighborhoods. The technique manages the problem presented by a surface-visible, underground-pathway obstruction such as a sidewalk, which lies across the path of installation. The technique, or method, is useful with any kind of cable, such as fiberoptic cable or copper wire cable. Hydraulic water pressure is applied through a biased, flexible conduit to erode a pathway under the obstruction from ground surface on one side to ground surface on the opposite side of the obstruction, thereby forming a tunnel under the obstruction through which the cable can be easily pulled. In alternative embodiments, the cable can be inserted directly into and through the conduit while it is underground, the conduit then acting as a sleeve for the cable which is subsequently removed prior to burying the cable in a trench dug from street-located handhole to house. Special apparatus connects a water hose to the flexible conduit (PVC plastic) to provide watertight operation while allowing manual flow control.
Abstract:
In a method and an apparatus for replacing old underground conduits (4), the old conduit (4) is first laid bare with the aid of a ground drilling device (8) with an overdrilling head and then, in turn, a new conduit (5) is drawn in with the aid of the drill rods (7) and at the same time—in a uniform operating step—the old conduit is pulled out of the ground.
Abstract:
A pipe laying apparatus comprising a frame mounted on two or more wheels, with a motor and a cutting disk for cutting a narrow slit in the ground. In one embodiment, the apparatus has a blade following the disk and having a conduit on the end with a nozzle on one end of the conduit that issues a jet of water into the bottom of the slit to form a channel. The pipe is attached to the other end of the conduit and is pulled into position in the channel as the apparatus advances. In an alternate embodiment, the apparatus has a winch and pulley used to deploy a wire into the slit as the apparatus is moved forward. The other end of the wire is attached to a nozzle and conduit with the pipe attached in turn to the conduit. When the apparatus is stoppped, the winch rewinds the wire while the nozzle sprays a jet of water in the direction of movement to form the channel and allow the pipe to be easily pulled into position.
Abstract:
A conduit and method of installing water conduits, electrical conduits or drainage conduits in soil. The conduit has a hollow body with a flat top, an integral upper flange and a wedge-shaped integral lower flange, adapted to be received or forced into the soil to provide a watering system or the like with the flange flush with the top of the soil.
Abstract:
A pipe cluster unit comprises a plurality of plastic pipes arranged parallel to one another and being in mutual engagement with one another along longitudinal lines of contact to form a pipe cluster and a cover layer bonded to external surface portions of the pipes. The cover layer connects adjoining pipes to one another by bridging the adjoining pipes at locations spaced from respective lines of contact between adjoining pipes.