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.

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.

Provided is a cutting wheel assembly comprising: a frame having two spaced support pillars, each having an intermediate portion at an angle to upper and lower portions; a pair of outer cutting wheels arranged either side of an inner cutting wheel all supported on the lower portions of the support pillars about a common axis of rotation; each cutting wheel having a central hub portion about which an annular cutting portion is provided having a respective cutting diameter; the inner cutting wheel having a different cutting diameter to that of the outer cutting wheels, and the central hub portions of neighboring cutting wheels defining a respective gap in which the intermediate portion of a respective pillar is received; at least one of the annular cutting portions of the inner and/or the outer cutting wheels having one or more rim portion(s) that overlap each gap so the annular cutting portions provide a cutting action along a continuous line of cut.

An excavation tool for making ground excavations for panels and diaphragms includes at least one rotary excavation drum. At least one frame is adapted to support the excavation drum. At least one pump is adapted for suction of an excavation fluid. A brushless electric motor is adapted to put in rotation the at least one excavation drum. At least one mechanical reducer is operationally connected to the electric motor and the at least one excavation drum. The electric motor is installed in the frame and coaxial to the at least one excavation drum. The at least one mechanical reducer is coaxial to the electric motor and the at least one excavation drum. The at least one mechanical reducer is adapted to transfer rotary motion from the electric motor to the at least one excavation drum.

The invention relates to a bucket wheel machine 100 comprising a base 102 and an operating block 104. The operating block comprises a bucket wheel 106, a bearing 112,114, and at least one of a ring chute 120, a bucket wheel chute 108, and a bucket wheel drive 116. The operating block 104 is detachably attached to the base of the bucket wheel machine 102. The operating block 104 also comprises a support frame 130 which is connected to the bearing 112,114.

Various embodiments of a multi-modal screw propelled excavation craft operable for excavating a material as the craft is propelled along a surface are disclosed.

Equipment for machining solid surfaces such as for example, surfaces made of asphalt or concrete or similar solid materials, in particular for making sound strips, said equipment comprising rotating machining or digging means carried by a main frame, and rotating means which engage said main supporting frame, wherein the rotation of said rotating means in a predefined direction of rotation results in said main supporting frame being rotated alternately in two opposite directions of rotation.

The present disclosure provides a dredging device including a body. The body includes a salvaging device salvaging sludge, a crushing device crushing the sludge, a sludge discharging device discharging the sludge, and an adjustiug device adjusting a height of the dredging device and moving. The salvaging device includes a driving wheel, a driven wheel, a transmission belt, salvaging hoppers. The dredging device further includes a second motor, crushing wheels, and a baffle. The second motor is turned on to drive a first gear to engage with second gears, so that rotating shafts drive the crushing wheels to crush sludge and larger stones. The baffle blocks an upper portion of the crushing wheels, which avoids the sludge splashing on a worker.

A hydraulic apparatus for a construction equipment, such as an excavator, comprising a support structure connected or connectable to a movable arm of the construction equipment and a pair or rotating drums comprising a plurality of teeth, a pair of hydraulic motors, each arranged for the movement of a particular drum, and a rotating flow divider device. The flow divider device comprises at least one inlet for receiving a supply of operative fluid provided by the construction equipment and a pair of outlets which provide the operative fluid, which is suitably divided, to the pair of hydraulic motors.

The invention relates to a slurry wall cutter for producing vertical ground trenches, which can be connected to a carrier apparatus, comprising a frame, a motor unit and a drive unit which is releasably connectable with the frame, wherein the drive unit comprises a carrier structure, at least one gear mechanism arranged on the carrier structure as well as a cutting tool for crushing ground material, which connected to the gear mechanism and drivable by the motor unit, wherein the motor unit is releasably connectable to the drive unit and wherein the frame and the drive unit respectively comprise guide means which are configured in such a way that the drive unit can be pushed laterally into and out of the frame.