The invention relates to a boring machine (10) including: a frame (12) bearing at least a first rotary milling drum, at least a first arm (40) movable with respect to the body (16); at least a first support (64) bearing the first milling drum (60), the first support (64) being connected to the lower end part (40b) of the first arm (40), an actuating device (50) to displace at least the first arm (40) with respect to the body (16). The invention is characterized by the fact that the body further includes: a translational guiding device (30) extending along the longitudinal direction, the boring machine further comprising a movable member displaceable with respect to the body along the longitudinal direction while being guided by the translational guiding device (30), the first arm (40) being mounted pivotably on the movable member (34).

A system for uncovering and sealing a narrow trench. The system comprises several subsystems, including a work machine, a frame for providing a seal with the surface to be trenched, a saw blade, a vacuum system, a system for placing product, and a resealer. The blade includes rotatable tooth bits, which may be rotated and secured to create a blade for narrower or a wider trench. A removable cover and the blade are easily changeable. A surface engaging member on the frame is manipulated to maintain a seal with changing ground surfaces. Additionally, the vertical location of the blade within the frame is adjustable to create a deeper or shallower trench.

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.

A system for uncovering and sealing a narrow trench. The system comprises several subsystems, including a work machine, a frame for providing a seal with the surface to be trenched, a saw blade, a vacuum system, a system for placing product, and a resealer. The blade includes rotatable tooth bits, which may be rotated and secured to create a blade for narrower or a wider trench. A removable cover and the blade are easily changeable. A surface engaging member on the frame is manipulated to maintain a seal with changing ground surfaces. Additionally, the vertical location of the blade within the frame is adjustable to create a deeper or shallower trench.

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.

A pivotally flexible motor mount for a rotary trenching tool allows for increased life of the overall system. A flexible motor mount includes a universal pivot arrangement that allows a motor housing to universally pivot relative to a boom to accommodate misalignment between a motor shaft axis and a rock wheel rotation axis. The flexible motor mount also includes a first pair of spherical connection joints aligned along a first pivot axis and a second pair of spherical connection joints aligned along a second pivot axis. The first and second pivot axes are generally perpendicular relative to one another. The flexible motor mount further includes a component mounting plate attached to the motor housing and an intermediate plate coupled to the component mounting plate by the first pair of spherical connection joints. The intermediate plate is also coupled to the boom by the second pair of spherical connection joints.

A hydraulic control for an attachment on a work vehicle. The attachment is mounted on the chassis of the work vehicle and movable between a first position and a second position. A hydraulic cylinder is operable to power movement of the attachment. A fluid circuit communicates with the hydraulic cylinder and is configured to carry hydraulic fluid. A fluid reservoir is in communication with the fluid circuit. Accumulators that are in communication with the fluid circuit automatically store and release hydraulic fluid in response to movement of the attachment. A valve assembly controls fluid communication between the fluid reservoir and the fluid circuit in response to movement of the attachment to its second position.

An attachment for coupling to a quick coupler on a dipper arm of an excavator includes a rotor having a plurality of ground engaging teeth mounted thereon, and a motor for rotatably driving the rotor. The rotor may be rotatably mounted between a pair of side plates to extend substantially parallel to the ground, in use, with a cover plate extending between the side plates to extend over at least an upper portion of the rotor. Optionally, a coupling on the cover plate is adapted to engage a quick coupler provided on a distal end of the dipper arm of the excavator.

Implementations of the accessory and associated methods allow for excavation of a ditch, wherein rotating grating means are used for expelling rubble and form a ditch. The accessory includes grating means which are moved with respect to the ditch to ensure contacting of the grating means with the road and alignment of a rotation axis of the grating means with the ditch axis. The ditch is progressively excavated when the grating means are rotated and displaced along the ditch axis. The grating means may be connectable to a mobile device through an arm assembly configured to controllably move the grating means from the mobile device. The accessory may be used for connection to a mining device for excavating the ditch along the road of an underground mining tunnel.

An excavation apparatus is disclosed. The excavation apparatus includes a chassis having a length that extends from a front end to a rear end of the chassis. The chassis also has a width oriented perpendicular to the length. A boom is pivotally attached to the rear end of the chassis. A cutting component mounted to the boom. A shroud structure at least partially covers the cutting component. A source of vacuum is in fluid communication with an interior of the shroud structure for drawing air containing dust from the interior of the shroud structure. A filter filters the air drawn from the interior of the shroud structure by the source of vacuum. A dust barrier projects downwardly from the shroud structure and extends along at least a portion of a perimeter of the shroud structure. The dust barrier has a construction that is pervious to debris generated by the cutting component and that provides gradually reduced restriction to inward air flow through the dust barrier as the dust barrier extends downwardly from the shroud structure.