Abstract:
An apparatus for installing multiple strands of hose below a surface of terrain is provided. The apparatus comprises a chassis (102) and rotating trenching blade assemblies (104) 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 (106) are connected to the chassis in trailing positions behind the trenching blades. Each hose guide receives hose from a hose reel (110) on reel mounts (108) connected to the chassis and deposits the hose into a trench dug by a trenching blade assembly. Trench filler-paclers (112) connected to the chassis trail the hose guides. Each trench filler-packer 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.
Abstract:
The invention provides a trenching and backfill device (2), comprising: a trenching machine arranged to cut a trench (24) in the ground; a first auger (4) and a second auger (6) arranged coupled to the trenching machine and driven so as to drive earth from the dug trench (24) back into the trench (24) to thereby backfill the trench (24). The invention also provides a backfill device (2), comprising: a first auger (4) and a second auger (4) couplable to a machine such as a trenching machine and driven so as to drive earth to backfill a trench (24).
Abstract:
The invention relates to a trenching system including a conveyor system for conveying spoil from a trench to a collector. In particular, the invention relates to a trenching assembly comprising a hydraulic blade motor; a blade, wherein the blade is driven by the hydraulic blade motor; a hydraulic conveyor motor; a conveyor for conveying spoil from a trench to a collector, wherein the conveyor is driven by the hydraulic conveyor motor; and a hydraulic control arrangement for controlling the flow of hydraulic fluid from a hydraulic pump to the hydraulic blade motor and the hydraulic conveyor motor. The invention also relates to a method of excavating a trench including the step of conveying spoil from the trench to a collector.
Abstract:
The invention relates to a machine (8) arranged for sawing micro trenches (1) and placing ducts/cables (2/3) in micro trenches (1), wherein said machine (8) comprises: - a saw blade (14) arranged for sawing a micro trench (1) in an area through a first layer (L1) and into a second layer (L2), wherein said first layer (L1) is a hard surface layer and said second layer (L2) is a bearing layer for said first layer (L1) and being positioned below said first layer (L1); and a stabilizing device (13) arranged for stabilizing the sides of said micro trench (1) when placing said ducts/cables (2, 3) in said micro trench (1) completely below said first layer (L1) by means of guiding means (17), wherein a front part (18) of said stabilizing device (13), when placing said ducts/cables (2, 3) in said micro trench (1), is positioned immediately behind said saw blade (14) and has a shape that is mainly complementary to the shape of said saw blade (14), and wherein said stabilizing device (13) further comprises one or more nozzles (31) arranged for cooling said saw blade (14).
Abstract:
A rotating tool for cutting microtrenches (1) comprising a disk-like rotatable body (2) having a central axis (X) and adapted to be secured to an arriver spindle of a digging machine or the like and a circular peripheral edge (3), at least one first trenching peak (5) designed to engrave a rigid substrate for cutting a microtrench, which is secured to the circular peripheral edge (3) in an at least partially radial position with a predetermined maximum width (h). The tool (1) also comprises a second trenching peak (7) other than the first peak (5), whose maximum width (l2) is smaller than that of the latter. The second peak (7) is secured to the peripheral edge (3) in an angularly staggered position relative to the first peak (5).
Abstract:
Die Erfindung betrifft eine Vorrichtung zum Verlegen eines Rohres (12) in einem Rasenbewuchs (16) aufweisenden Boden (14), insbesondere einer Sportanlage, wobei die Vorrichtung (10) in einer Bearbeitungsrichtung (36) über die Bodenfläche (15) bewegbar ist, umfassend eine Aushubeinrichtung (82) zum Ausbilden einer schlitzförmigen Ausnehmung (140) im Boden (14) und eine der Aushubeinrichtung (82) in Bearbeitungsrichtung (36) nachlaufende Einführeinrichtung (84) zum Einführen des Rohres (12) in die Ausnehmung (140). Um eine derartige Vorrichtung (10) zum Verlegen eines Rohres (12) bereitzustellen, mit der sich das Rohr (12) auf einfachere Weise verlegen lässt, wird erfindungsgemäß vorgeschlagen, dass die Vorrichtung (10) der Aushubeinrichtung (82) in Bearbeitungsrichtung (36) vorauseilend eine Trenneinrichtung (78) umfasst, mit der die Rasensode (22) auftrennbar ist, sowie eine Spreizeinrichtung (80) zum Spreizen der getrennten Rasensodenabschnitte (114, 116) voneinander und zum Führen der Rasensodenabschnitte (114, 116) seitlich vorbei an der Aushubeinrichtung (82) und der Einführeinrichtung (84) bei bewegter Vorrichtung (10), wobei zumindest mit der Aushubeinrichtung (82) zwischen den gespreizten Rasensodenabschnitten (114, 116) in den Boden (14) eingreifbar und das Rohr (12) zwischen den Rasensodenabschnitten (114, 116) in die Ausnehmung (140) einführbar ist. Außerdem betrifft die Erfindung ein Verfahren.
Abstract:
The present invention relates to a machine for digging under pipes, wherein said machine comprises a frame (1) having a caterpillar drive traction device (3) mounted thereon as well as left (4) and right (5) identical working organs. The working organs (4, 5) are each made in the shape of a mount (6) which is attached to the frame (1) and capable of forced rotation about the vertical axis (7). These organs also comprise a cylindrical endless-screw-type driving cutter (8) as well as a cylindrical blade (10) attached to the mount (6) coaxially behind the cutter (8). The cutter (8) is mounted at the lower end and on the side of the mount (6) so that its rotation axis is horizontal. The machine further includes a transversal stabilisation device (98) comprising two stabilisation mechanisms (99), wherein each mechanism comprises an adjustable-height support member (100) that rests on the bottom of the trench. The traction device (3) includes a frame (78) as well as a caterpillar that comprises rigid brackets (83) and flexible support members (84). The brackets (83) extend outwardly from the external surface of the caterpillar central part. The flexible support members (84) are connected to the brackets (83) so as to be incapable of linear displacement and are made short enough so as to stretch about the profile of the pipe cross-section. This invention may be used to increase the yield of machines and to dig under pipes of a larger diameter as well as in a wider variety of soils. The present invention may also be used for the automatic digging under pipes and for installing or removing the machine without assembling or disassembling its structural elements. This machine is capable of displacement along curved pipes while avoiding insurmountable obstacles and is also capable of digging under pipes having different diameters. The present invention increases the machine reliability and durability, decreases the resistance to the displacement and also simplifies the structure of the traction device.
Abstract:
This disclosure relates to a disc cutter comprising PCD cutting elements mounted about a circular body via intermediate tool holders. The cutting elements and corresponding tool holders are arranged in sets of typically 4, 5 or 6 tool holders. The sets repeat along the 5 circumference of the body. A tool holder stabilising system is implemented to reduce the occurrence of vibrations, caused by the cutting operation in use, reaching the cutting elements and causing premature failure.
Abstract:
This disclosure relates to a disc cutter comprising a cutter body, a plurality of tool holders and a plurality of cutting elements. The tool holders and cutting elements are arranged in at least one set about the cutter body. Each set comprises tool holders and cutting elements in a predetermined sequence of configurations. In the pre-determined sequence of configurations, the quantity of cutting elements and/or the lateral spacing of the cutting elements varies.