A tamp having replaceable tamp plates which, when operatively coupled to a tamp handle, can rotate relative to the tamp handle, or a longitudinal axis of the tamp handle, when in use to better allow a tamp plate surface to conform to the material being tamped, while allowing the handle to be more easily maintained in an orientation desired by the user and while reducing or absorbing shock. The tamp may also include “dead blow” material such as steel shot or the like to improve the inertia, efficiency and impact of the tamp as it is being utilized, while reducing recoil effects.

A tamp having replaceable tamp plates which, when operatively coupled to a tamp handle, can rotate relative to the tamp handle, or a longitudinal axis of the tamp handle, when in use to better allow a tamp plate surface to conform to the material being tamped, while allowing the handle to be more easily maintained in an orientation desired by the user and while reducing or absorbing shock. The tamp may also include “dead blow” material such as steel shot or the like to improve the inertia, efficiency and impact of the tamp as it is being utilized, while reducing recoil effects.

A self-propelled construction device, in particular a soil compactor, includes a turbocharged diesel engine with a first radiator arrangement for cooling charge air and a second radiator arrangement for cooling a cooling liquid and/or hydraulic oil, with a first radiator fan being allocated to the first radiator arrangement and a second radiator fan being allocated to the second radiator arrangement and the first radiator fan and the second radiator fan being able to be operated essentially independently from each other.

A self-propelled construction device, in particular a soil compactor, includes a turbocharged diesel engine with a first radiator arrangement for cooling charge air and a second radiator arrangement for cooling a cooling liquid and/or hydraulic oil, with a first radiator fan being allocated to the first radiator arrangement and a second radiator fan being allocated to the second radiator arrangement and the first radiator fan and the second radiator fan being able to be operated essentially independently from each other.

A construction machine that can make a depressing force of a bucket during compaction work to be uniform without requiring an operator to perform a complicated operation is provided. A controller 18 determines whether or not compaction work is in progress, calculates a front distance R that represents a distance between a rotational pivot of a boom 4 and a predetermined position B in a back surface of a bucket 6, determines a target velocity of the bucket such that a velocity with which the bucket approaches a leveling target surface decreases with increasing values of the front distance, and, during the compaction work, notifies the operator of details of an operation of operation devices 9a and 9b for achieving the target velocity of the bucket or controls hydraulic actuators 4a to 6a so as to achieve the target velocity of the bucket.

A construction machine that can make a depressing force of a bucket during compaction work to be uniform without requiring an operator to perform a complicated operation is provided. A controller 18 determines whether or not compaction work is in progress, calculates a front distance R that represents a distance between a rotational pivot of a boom 4 and a predetermined position B in a back surface of a bucket 6, determines a target velocity of the bucket such that a velocity with which the bucket approaches a leveling target surface decreases with increasing values of the front distance, and, during the compaction work, notifies the operator of details of an operation of operation devices 9a and 9b for achieving the target velocity of the bucket or controls hydraulic actuators 4a to 6a so as to achieve the target velocity of the bucket.

A hydraulic pole tamper with an extended ergonomic handle including a frame and hose clamps to extend the life of the hose by securing the hoses to the frame and to improve the handle, orientation, and usability of the pole tamper. The pole tamper is used to tamp or compact the dirt around a pole which has been set into a hole in the ground to fixedly secure the pole vertically in the ground.

A hydraulic pole tamper with an extended ergonomic handle including a frame and hose clamps to extend the life of the hose by securing the hoses to the frame and to improve the handle, orientation, and usability of the pole tamper. The pole tamper is used to tamp or compact the dirt around a pole which has been set into a hole in the ground to fixedly secure the pole vertically in the ground.

A grading blade for use with a plate compactor and a plate compactor having a grading blade, for use in grading base material when compacting. The grading blade is user movable relative to the plate compactor via a connection to a pivoting handle of the plate compactor or via a separate controller. The grading blade may be configured for use with a laser level and/or for remote control.

The present disclosure relates to automated dynamic compaction systems. A system for dynamic compaction includes a compaction crane having a boom and compaction weight, at least one positional sensor, at least one boom deflection sensor, a rotational encoder, and a compaction control system. The compaction control system may be programmed to identify a first drop location having a first target parameter, determine whether the compaction crane is positioned over the first drop location, determine an initial elevation of the compaction weight, lift the compaction weight to a drop height, detect that the compaction weight has been released, re-hoist the compaction weight to the drop height, measure the payout length of a winch cable after each drop, determine a current elevation of the compaction weight after each drop, and determine whether the first target parameter has been satisfied.