An apparatus for installing multiple strands of hose below a surface of terrain is provided. The apparatus comprises a chassis and rotating trenching blade assemblies connected to the chassis. The trenching blade assemblies are configured to dig parallel trenches when the apparatus is pulled along the terrain. Curved hose guides are connected to the chassis in trailing positions behind the trenching blades. Each hose guide receives hose from a hose reel on reel mounts connected to the chassis and deposits the hose into a trench dug by a trenching blade assembly. Trench fillers connected to the chassis trail the hose guides. Each trench filler is aligned with a respective hose guide and comprises a number of blades configured to push soil excavated from a trench back into the trench when the apparatus is pulled along the terrain.

A boring machine for producing a trench in the ground including a chassis that extends in a longitudinal direction, the chassis having a lower end, the machine including a boring device mounted at the lower end of the chassis, the boring device including a first boring member which is rotary about a first axis of rotation, and a second boring member which is rotary about a second axis of rotation, the second axis of rotation and the first axis of rotation extending in a plane perpendicular to the longitudinal direction, wherein the first axis of rotation is inclined with respect to the second axis of rotation.

This disclosure relates to a disk cutter (18) comprising a cutter body, a plurality of tool holders (24) and a plurality of cutting elements (22) mounted to the tool holders. The tool holders and cutting elements are provided in at least one set about the cutter body, each set comprising two or more tool holders and two or more cutting elements arranged in a p re-determined sequence of configurations.

The application relates to a modular slurry wall cutter for preparing a slurry trench that is connectable to a carrier machine, said slurry wall cutter having a frame and at least one cutting tool arranged at the frame to break up soil material. The frame here comprises an upper frame part, a middle frame part, and a lower frame part that are releasably connectable to one another, with the upper and lower frame parts being releasably connectable to one another both directly and via the middle frame part that can be arranged therebetween. The application further relates to a carrier machine, such as to a cable excavator, having a slurry wall cutter in accordance with the application.

Microtrenching blades and methods of manufacturing the same. A blade includes a blade body comprising a cutting edge, wherein the cutting edge is disposed around a perimeter of the blade body. The blade includes a center arbor bore defining a hole through the blade body, wherein the blade rotates about an axis of rotation disposed in the center arbor bore. The blade includes a plurality of cutters attached to the cutting edge. The blade is such that the cutting edge is separated into a plurality of blade segments, and further such that the plurality of blade segments each comprises two or more of the plurality of cutters.

Microtrenching blades and methods of manufacturing the same. A blade a first blade portion comprising a center arbor bore defining a hole through the blade and a second blade portion comprising a plurality of blade segments, wherein the second blade portion is distal to the first blade portion relative to the center arbor bore. The blade includes a plurality of blade scoops disposed around a perimeter of the blade. The blade is such that the plurality of blade segments and the plurality of blade scoops are arranged such that two of the plurality of blade segments are separated by a blade scoop.

Microtrenching blades and methods of manufacturing the same. A blade includes a blade body comprising a cutting edge, wherein the cutting edge is disposed around a perimeter of the blade body, and wherein the cutting edge comprises a centerline and a width. The blade comprises a plurality of cutters attached to the cutting edge. The blade is such that three or more of the plurality of cutters are each attached to the cutting edge of the blade body at a different position relative to the centerline of the cutting edge of the blade body.

Cutting wheel system (1) for a dredging device, comprising a cutting wheel (2) and a cutting wheel drive system (8), whereby the cutting wheel comprises at least two cutting element rings (3), which rings are positioned at a distance from each other in parallel planes whereby the cutting element rings have coaxial rotation axes (12,13), whereby a suction tube (7) can be positioned between the two cutting element rings (3), whereby the cutting wheel drive system is arranged to rotate the cutting wheel about the coaxial rotation axes, wherein the cutting wheel system further comprises connecting arms (9) for mounting the cutting wheel in a rotatable manner to the dredging device, wherein the connecting arms are moveable with respect to each other between a closed position wherein the connecting arms engage the cutting wheel from opposite sides of the cutting wheel, and an open position wherein the cutting wheel is released from the connecting arms.

A system for uncovering a trench. The system comprises several subsystems, including a work machine and a frame for providing a seal with the surface to be trenched with a saw blade contained therein. The blade is supported on a hub which is slidably movable relative to the frame by operation of a linear actuator, which may be a hydraulic cylinder or the like. The vertical location of the blade within the frame is continuously adjustable to create a deeper or shallower trench. A monitoring system is provided to monitor the vertical location from an operator station.

An apparatus for installing multiple strands of hose below a surface of terrain is provided. The apparatus comprises a chassis and rotating trenching blade assemblies connected to the chassis. The trenching blade assemblies are configured to dig parallel trenches when the apparatus is pulled along the terrain. Curved hose guides are connected to the chassis in trailing positions behind the trenching blades. Each hose guide receives hose from a hose reel on reel mounts connected to the chassis and deposits the hose into a trench dug by a trenching blade assembly. Trench fillers connected to the chassis trail the hose guides. Each trench filler is aligned with a respective hose guide and comprises a number of blades configured to push soil excavated from a trench back into the trench when the apparatus is pulled along the terrain.