One embodiment of a thumb for an implement of a machine has first and second side plates each having a pivot end for pivotally connecting to a linkage of the machine and an engagement end for engaging with a load. The thumb also has a belly plate extending across a width of the thumb between the first and second side plates and extending along a length of the thumb from the pivot end toward the engagement end. Additionally, the thumb has a thumb support structure disposed closer to the engagement end than to the pivot end. The thumb support structure has a first support plate extending widthwise between the first and second side plates and a second support plate extending widthwise between the first and second side plates and further extending between the first support plate and the belly plate.

A rock sifting and removing tractor attachment device for unearthing very large rocks and sifting large rocks from soil includes a connection frame configured for coupling to a vehicle. Each of a pair of fixed arms projects forward from a bottom of the connection frame. A sifting panel includes a plurality of interconnected spaced beams. The sifting panel is pivotable relative to the connection frame between a retracted position and an extended position. The beams are positioned parallel to the connection frame in the retracted position and the beams are positioned coplanar with the fixed arms in the extended position.

To set time difference to the starting time of excavation and scooping by setting the starting of the scooping with a bucket behind the starting of the excavation with a ripper in an excavation machine where the bucket and the ripper are equipped to an arm, and are manipulated to open and close with each other by expansion and contraction of a hydraulic cylinder During the first half of the contracting process at a hydraulic cylinder, a pin mounted on a connecting link where a bucket and a ripper are connected moves through a slot formed on the bucket to make bucket delay in closing, and the bucket and the ripper close at the same time during the latter half of the contracting process.

An articulated rake assembly attachable to an excavating vehicle having a bucket. The rake assembly has a rake mechanism adapted and constructed to retain material having a certain size. A reciprocating mechanism operationally connects the rake mechanism to the bucket of the vehicle, and is adapted and constructed to selectively reciprocate the rake mechanism with respect to the bucket, thereby selectively retaining material. The rake mechanism configurable to have either or both a push orientation and a gather orientation.

A detachable thumb assembly for a construction equipment machine includes a mounting bracket for attaching the thumb assembly to a digging apparatus of the machine, a thumb pivotally connected on the mounting bracket, a thumb cylinder including a cylinder body connected to the mounting bracket and a cylinder rod which extends from a front end of the cylinder body and which is connected to the thumb. The body of the thumb cylinder is pivotally connected to the mounting bracket at a connection portion of the body which is distinct from a body back end portion.

A gripper having at least two gripper arms movably arranged in a pincer-like manner on a base part and a cutting device for material to be cut for attachment to a processing machine, wherein the cutting device is formed by a cutting plate, which is movable by a piston-cylinder unit from an active position, in which the cutting plate projects into a receiving space for the material to be cut enclosed by the gripper arms, into an inactive position, in which the cutting plate is retracted in the base part. The retractable and extendable piston rod of the piston-cylinder unit is connected to the cutting plate via a driver pin which, in the active position of the cutting plate, rests against an abutment of the base part when the cutting plate is loaded.

Provided is a holding apparatus capable of holding a holding object with sufficient holding force from either of the outside and the inside. The holding apparatus includes a holding-apparatus body, a first and second arms, an opening and closing mechanism, a driving device, and a first and second holding elements. The opening and closing mechanism interconnects each of the first and second arms and the holding apparatus main bodies so as to allow the first and second arms to be moved in the opening and closing direction while kept in the holding posture. The first and second holding elements is pivotably connected to the arm lower region, having respective inner contact surfaces opposed to each other in the opening and closing direction and respective outer contact surfaces facing the opposite side.

A tool 1 for an excavator comprises a primary engagement means 2, a secondary engagement means 3 rotatable about an axis of rotation A and a connection means 5 for connecting the tool to an excavator (100, FIG. 1), wherein the axis of rotation of the secondary engagement means 3 passes through the connection means 5.

A dredging bucket having a head subassembly including an inner rotatable head and an outer head angularly supported by the inner head between level and tilted orientations. First and second opposing bucket halves supported by the outer head and pivotally actuating between closed and opened positions. A pair of T-links incorporated into spaced apart and coaxial pivot locations defined between the bucket halves, each of the T-links having a central stopping bar which, upon the bucket halves rotating to a maximum degree associated with the opened position, contacting end locations defined in upper edge profiles of the bucket halves in order to prevent further opening rotation.

A method for controlling a loading tool includes positioning the loading tool on a lifting device of a machine, receiving a payload by the loading tool from a payload stock during an operating mode, and determining a mass of the payload during the operating mode. The method also includes providing calibration data representative of a ratio between a volume of the payload and a mass of the payload, detecting a volume of the payload during the operating mode, and determining the mass of the payload as a function of the detecting step and the calibration data.