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.

The method for directionally swaying and resetting harrow teeth of a rolling harrow loader-excavator and the rolling harrow loader-excavator comprising a harrow rotary piece, directional sway and reset harrow teeth, a harrow supporter, a driving mechanism, a feeder mechanism and a body; each directional sway and reset harrow tooth comprises a torsion spring shaft supporting piece, a tooth handle sway limiting piece, a directional sway and reset tooth handle, a directional sway and reset tooth point, a torsion spring tooth handle shaft, a torsion spring and a torsion spring tooth handle shaft retaining piece.

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.

A trench wall apparatus includes a base frame held at its top end by a holding means held by at least one soil excavation means, which is positioned at a bottom end of the base frame. When soil is excavated while forming the trench, the trench wall apparatus is held by a clamping means that includes at least two clamping elements on opposite sides extended laterally by at least one actuating cylinder, whereby at least one part of the trench wall apparatus is clamped in the trench, and a pressing means applies a pressing force on the at least one soil excavation means. The clamping elements and clamping cylinder are positioned on an intermediate frame displaceably mounted along the base frame. The intermediate frame is clamped and fixed to the ground by the clamping means. The base frame having the soil excavation means is pressed downward by the pressing means.

The invention relates to an automotive construction machine with a transport device extending in the working direction beyond the machine frame, in particular a road milling machine or surface miner. Moreover, the invention relates to a method for displaying an image of the surroundings of an automotive construction machine. The construction machine according to the invention has an image display device for displaying a bird's eye view image of the surroundings of the construction machine, which image display device has a camera system with a plurality of cameras for recording individual overlapping image regions of the construction machine surroundings from different image recording positions, and an image processing system. The image processing system is configured in such a way that image details of the individual image regions are joined together to form a total image from a bird's eye view. The camera system has at least one camera which is arranged on the transport device in such a way that the viewing direction of the camera is directed in the direction of the machine frame, and at least one further camera which is arranged on the machine frame in such a way that the viewing direction of the camera is directed away from the machine frame. Using the cameras directed into and away from the machine frame, the machine operator obtains a complete surround view, which includes the region covered by the transport device in the working direction in front of the construction machine.

A method for transferring endangered land from a first location in a first arrangement to a second location in the same first arrangement is disclosed. The method includes cutting, with a first cutting tool, a first pair of parallel rows in a first section of land of a first location. Then cutting a second pair of parallel rows, in the first section, that are perpendicular to the first pair of parallel rows creating an intersection of land between the first and second rows defining a transferable parcel and cutting a bottom side of the transferable parcel of land. The next step in the method is to lift the transferable parcel from a ground, placing the transferable parcel onto a portable bed, transferring the portable bed to the second location, and transplanting the transferable parcel into a receiving section of land of the second location in the same first arrangement.

Equipment (10) for excavating solid surfaces S, such as made of asphalt or concrete or similar solid materials, for example, in particular for digging trenches in said solid surfaces, said equipment (10) comprising working or digging means (16) rotationally fixed to a main frame (11), and an adjustment frame (30) defining at least one substantially flat contact portion (33) adapted to be placed in contact with a corresponding portion of the surface S to be worked, where the position of said adjustment frame (30) with respect to said main supporting frame (11) may be adjusted so as to adjust the working depth K of said working means (16); and where said adjustment frame (30) is rotationally disengaged from said main supporting frame (11) so that the adjustment frame always perfectly rests on the surface to be worked S irrespective of the particular working conditions.

A system and method for automated control of reclaimers includes a boom, a bucket wheel, and a translation system. This system comprises memorizing operating parameters used during a turning movement of the boom, allowing identification of positions where there was an overflow or an unsatisfactory reclaiming flow. With this memorized information, the flow controller makes changes to the boom turning speed (Vg), increasing it in positions where the reclaiming flow was low and decreasing it in positions where there was overflow.

An earth working apparatus, for laying a pipe or cable underground. The earth working apparatus comprises a plurality of trenching modules. Each trenching module is arranged sequentially in a first plane and comprises a cutter in communication with a conveyor. In a second aspect, each trenching module cuts a layer of earth and conveys said layer of earth to a collection device or to a collection area.

A bucket wheel machine 100 having a base 102 and an operating block 104. The operating block has 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 has a support frame 130 which is connected to the bearing 112,114.