A plow assembly for forming a trench within soil of a selected land area. The plow assembly has a blade element, a displacement element, and an attachment element that permits attachment of the plow assembly to a vehicle, such as a tractor. A first end of the displacement element is secured to a distal end of the blade element, and a second end of the displacement element is spaced from a rear edge of the blade element and connected to a pipe. As the plow assembly is advanced within soil, the cutting edge of the blade element cuts through the soil and the displacement element displaces the soil to form the trench and pulls the pipe into the trench as the trench is formed.

The present invention relates to a device for laying pipes (1) in the ground, the device comprising a ploughshare (2) with a ploughshare shoe (3), wherein the ploughshare shoe (3) has at least one displacement element (5) protruding in a laying direction (4), a drill (6), which drill (6) is connected to the ploughshare (2) and comprises at least one drill head (7) arranged in a drill head housing section (7a) of a drill housing and a conveyor device (8) arranged in a conveyor housing section (8a) of the drill housing for removing drilled material, and a connection device (9) for connecting a pipe (1) to be laid to the drill (6), wherein the ploughshare (2) is arranged behind the drill (6) when viewed in the laying direction (4).

Provided are an excavating apparatus and an excavating method which are capable of reducing a shear force to be applied to a fastening member fixedly fastening an excavation blade plate and a chain together. A trench excavator serving as the excavating apparatus is equipped with a cutter post, a chain, a second cutter bit plate, and a shoe bolt. The second cutter bit plate includes a pair of restraint plates disposed on both sides of and across the chain in a width direction of the chain to extend from a reverse surface of a plate body. The pair of restraint plates are configured to be brought into contact with the cutter post along with a circulating movement of the chain and the second cutter bit plate, to thereby restrict the second cutter bit plate from being rotated about an axis extending along a circulating movement direction.

A plow assembly for forming a trench within soil of a selected land area. The plow assembly has a blade element, a displacement element, and an attachment element that permits attachment of the plow assembly to a vehicle, such as a tractor. A first end of the displacement element is secured to a distal end of the blade element, and a second end of the displacement element is spaced from a rear edge of the blade element and connected to a pipe. The displacement element has a variable diameter that increases moving from the first end of the displacement element to the second end of the displacement element. As the plow assembly is advanced within soil, the cutting edge of the blade element cuts through the soil and the displacement element displaces the soil to form the trench and pulls the pipe into the trench as the trench is formed.

A plow assembly for forming a trench within soil of a selected land area. The plow assembly has a blade element, a displacement element, and an attachment element that permits attachment of the plow assembly to a vehicle, such as a tractor. A first end of the displacement element is secured to a distal end of the blade element, and a second end of the displacement element is spaced from a rear edge of the blade element and connected to a pipe. The displacement element has a variable diameter that increases moving from the first end of the displacement element to the second end of the displacement element. As the plow assembly is advanced within soil, the cutting edge of the blade element cuts through the soil and the displacement element displaces the soil to form the trench and pulls the pipe into the trench as the trench is formed.

A drilling machine and operating method wherein a control algorithm evaluates a drill string joint-break routine. The operating profile of torque applied to the up-hole drill rod is monitored during energization of the break-out drive mechanism in the joint-break routine. Rotation at the rotational driver is also monitored during the joint-break routine, which is then characterized as normal or abnormal on the basis of the monitored operating profile of torque and the monitored rotational position change at the rotational driver. A break-out process for removing the up-hole rod from the drill string is interrupted and/or a message is provided to a display notifying an operator of an abnormal break-out.

Apparatuses, systems, and methods are provided for cutting a trench in soil or earth by driving a cutter tube member through the soil or earth, injecting compressed fluid into the tube member to break up the soil and drive it through the tube member along the flow of compressed fluid, imparting dynamic vibrational forces to the tube member to assist the flow of soil therethrough, ejecting the soil from the tube member, guiding and releasing media and/or filler material into the trench, and backfilling the trench with the ejected soil.

Provided are an excavating apparatus and an excavating method which are capable of reducing a shear force to be applied to a fastening member fixedly fastening an excavation blade plate and a chain together. A trench excavator serving as the excavating apparatus is equipped with a cutter post, a chain, a second cutter bit plate, and a shoe bolt. The second cutter bit plate includes a pair of restraint plates disposed on both sides of and across the chain in a width direction of the chain to extend from a reverse surface of a plate body. The pair of restraint plates are configured to be brought into contact with the cutter post along with a circulating movement of the chain and the second cutter bit plate, to thereby restrict the second cutter bit plate from being rotated about an axis extending along a circulating movement direction.

Provided are an excavating apparatus, an excavation blade plate and an excavating method which are capable of reducing a shear force to be applied to a fastening member fixedly fastening the excavation blade plate and a chain together. The excavating apparatus comprises a cutter post, a chain, a plurality of cutter bit plates, and a shoe bolt S1. The chain 11 is formed by mutually coupling a plurality of pairs of links arranged along a circulating movement direction thereof Each of the cutter bit plates includes: a support-target surface supported by a supporting surface of the chain; and a central convex portion formed to protrude with respect to the support-target surface and inserted in a space between the pair of links, wherein the central convex portion is in surface contact with inner side surfaces of the pair of links along the circulating movement direction.

A pipeline is assembled traversing steep terrain by digging a trench down an incline, assembling pipe joints together in proximity to the incline, and then using equipment to push and/or pull the assembled pipe joints down the incline and through the trench while the pipeline is suspended above the bottom of the trench. A series of connected sleds are used to partially carry the load of the assembled pipeline, keep it off the bottom of the trench until it is in place, and permit the installation of supports under it prior to backfilling.