A bucket raising/lowering and opening/closing device (11) of a deep foundation excavator (1) includes a raising/lowering cylinder (12), a first raising/lowering sheave (14) and a first opening/closing sheave (15) that move in an expansion/contraction direction of the raising/lowering cylinder (12), a second raising/lowering sheave (17), a second opening/closing sheave (20), an opening/closing cylinder (18) that moves the second opening/closing sheave (20) to be closer to and to be separated from the first opening/closing sheave (15), a raising/lowering rope (24) that is wound around the first raising/lowering sheave (14) and the second raising/lowering sheave (17), and an opening/closing rope (25) that is wound around the first opening/closing sheave (15) and the second opening/closing sheave (20). In addition, provided are a slack adjustment cylinder (26) that expands and contracts to adjust the slack of the opening/closing rope (25), and a slack adjustment sheave (28) that moves in a direction of being closer to and being separated from the second opening/closing sheave (20) in response to an expansion/contraction movement of the slack adjustment cylinder (26).

Disclosed embodiments include post driving implements which attach to a power machine such as a loader in order to pick up posts of various sizes and materials and/or to drive the posts into the ground. In some exemplary disclosed embodiments, the post driving implement allows a post to be picked up when positioned inline with a direction of power machine travel and allows the post to rotate under the force of gravity to a second position in which the post is inline with a pounding mechanism for pounding the post into the ground. Catch mechanisms can be included to capture a portion of the implement to maintain the post in the second position until a release action is taken or a release command is given.

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 loading system for a material has a grab dredger configured to selectively engage the material, where the grab dredger includes a boom and a line configured to move a grab throughout a working space. The working space includes an arc within a plane defined by a first dimension and a second dimension, where a third dimension lies perpendicular to the plane. The working space includes a minimum engagement distance and a maximum engagement distance. A Light Detection and Ranging (LiDAR) module can locate a material acquisition point, a material deposit point, and at least one obstacle point. A controller operates the grab dredger to move the grab within the working space to selectively engage the material. The loading system can move the material from the material acquisition point to the material deposit point while negotiating the at least one obstacle point.

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 grappling apparatus usable with a vehicle is provided. The grappling apparatus includes a connection assembly, a grappling assembly and a stabilizing assembly. The connection assembly connects the grappling apparatus to the vehicle. The grappling assembly has an upper claw assembly and a lower claw assembly. The upper claw assembly has a first plurality of manipulator arms and a walking gear. The lower claw assembly has a second plurality of manipulator arms and a stabilizer gear. The walking gear is meshable with the stabilizer gear and the first and second plurality of manipulator arms are operably connected to the walking gear and the stabilizer gear so as to be moveable between a closed position and an open position. The stabilizing assembly has a stabilizer bar operably connected to the second plurality of manipulator arms and the vehicle so as to stabilize the at least one stabilizer gear.

A grappling apparatus usable with a vehicle is provided. The grappling apparatus includes a connection assembly, a grappling assembly and a stabilizing assembly. The connection assembly connects the grappling apparatus to the vehicle. The grappling assembly has an upper claw assembly and a lower claw assembly. The upper claw assembly has a first plurality of manipulator arms and a walking gear. The lower claw assembly has a second plurality of manipulator arms and a stabilizer gear. The walking gear is meshable with the stabilizer gear and the first and second plurality of manipulator arms are operably connected to the walking gear and the stabilizer gear so as to be moveable between a closed position and an open position. The stabilizing assembly has a stabilizer bar operably connected to the second plurality of manipulator arms and the vehicle so as to stabilize the at least one stabilizer gear.

A concrete removing apparatus comprises a claw, a cleaving blade, and a bracket. The claw generally has a lower portion, a back portion, and an upper portion. The lower portion generally has a bottom surface, a sloped top surface, and extends forward from the back portion. The upper portion generally extends forward from the back portion partially overhanging the bottom portion and forming a locking notch defined by a front edge of the back portion, a bottom surface of the upper portion, and the top surface of the bottom portion. The cleaving blade is generally attached to a rear surface of the back portion of the claw. The bracket is generally mounted on a top surface of the upper portion of the claw and configured to pivotally connect the bracket to an arm and a hydraulic cylinder of a construction machine.

A work machine is provided that is capable of causing an action object of the work machine to act in a manner intended by an operator. A work machine includes a traveling body 11 (base body), a grasping mechanism 14 (working unit) which is displaceable with respect to the traveling body 11 and performs a processing action on a vehicle OB (work target object), an operation accepting unit 23a, a controller 23 which controls displacement and the processing action of the grasping mechanism 14 in accordance with an operation accepted by the operation accepting unit 23a and an operation amount of the operation, and a distance acquisition unit 23f which acquires a distance between the grasping mechanism 14 and one region defined based on a position of the vehicle OB. The controller 23 adjusts a displacement amount or an action amount of the processing action of the grasping mechanism 14 with respect to the operation amount in accordance with the distance.

The subject matter of this specification can be embodied in, among other things, a grapple assembly that includes a grapple unit having a fixed assembly, an articulating assembly having a pivot point located at a proximal end of the articulating assembly, pivotably coupling the articulating assembly to the fixed assembly, and an articulation connection point distal to the pivot point along the articulating assembly, and a linear actuator having a first actuator end and a second actuator end configured to move linearly relative to the first actuator end, the first actuator end being pivotably coupled to the fixed assembly and the second actuator end being pivotably coupled to the articulation connection point, and configured to actuate the articulating assembly relative to the fixed assembly.