A device for compacting a substrate, comprising an under carriage with a base arranged on the under carriage; a superstructure which is connected to the under carriage so as to transmit a force; a vibration exciter, by means of which at least the base of the undercarriage can be caused to vibrate and a contact plate, which is arranged on the base, said contact plate being arranged on a base lower face facing away from the superstructure such that the contact plate directly contacts the substrate to be compacted during the operation of the device. The contact plate and the base are connected together in a non-destructively releasable manner so as to transmit a force.

A vibratory plate for soil compaction machine has an upper mass and a lower mass that is elastically coupled to the upper mass and that has a soil contact plate. The soil contact plate has a vibration exciter device. At least one energy storage element is situated on the upper mass.

A vibratory plate for soil compaction machine has an upper mass and a lower mass that is elastically coupled to the upper mass and that has a soil contact plate. The soil contact plate has a vibration exciter device. At least one energy storage element is situated on the upper mass.

A compaction machine includes a frame and a compactor drum. The compactor drum includes a vibratory system and a support structure. The vibratory system includes a vibratory mechanism coupled to the support structure. The vibratory mechanism includes a cavity having a radial outer wall. The radial outer wall is curved and is eccentric with respect to an axis of rotation of the vibratory system. Further, the radial outer wall extends around the axis of rotation. The vibratory mechanism also includes a non-fixed weight provided within the cavity. The non-fixed weight is adapted to move within the cavity. A movement of the non-fixed weight within the cavity generates multiple vibration amplitudes as the vibratory system rotates in a first direction and a second direction. The first direction is opposite to the second direction.

A compaction machine includes a frame and a compactor drum. The compactor drum includes a vibratory system and a support structure. The vibratory system includes a vibratory mechanism coupled to the support structure. The vibratory mechanism includes a cavity having a radial outer wall. The radial outer wall is curved and is eccentric with respect to an axis of rotation of the vibratory system. Further, the radial outer wall extends around the axis of rotation. The vibratory mechanism also includes a non-fixed weight provided within the cavity. The non-fixed weight is adapted to move within the cavity. A movement of the non-fixed weight within the cavity generates multiple vibration amplitudes as the vibratory system rotates in a first direction and a second direction. The first direction is opposite to the second direction.

A ground compactor for ground compaction during construction work, the ground compactor comprising an upper mass movably connected to a lower mass, where the lower mass is arranged to make contact with the ground during compaction, the ground compactor comprising at least one electric motor arranged to operate in a voltage range to drive the ground compactor, the ground compactor further comprising first and second battery compartments for receiving respective first and second batteries, and power circuitry configured to supply power in the voltage range to the at least one electric motor from either of the first and second batteries.

A ground compactor for ground compaction during construction work, the ground compactor comprising an upper mass movably connected to a lower mass, where the lower mass is arranged to make contact with the ground during compaction, the ground compactor comprising at least one electric motor arranged to operate in a voltage range to drive the ground compactor, the ground compactor further comprising first and second battery compartments for receiving respective first and second batteries, and power circuitry configured to supply power in the voltage range to the at least one electric motor from either of the first and second batteries.

A compactor includes a plate, an electric motor coupled to the plate, an exciter coupled to the plate and configured to vibrate the plate in response to receiving torque from the electric motor, a means for transferring torque from the electric motor to the exciter, a battery configured to provide power to the electric motor, and a vibration isolator coupling the battery to the plate.

A compactor includes a plate, an electric motor coupled to the plate, an exciter coupled to the plate and configured to vibrate the plate in response to receiving torque from the electric motor, a means for transferring torque from the electric motor to the exciter, a battery configured to provide power to the electric motor, and a vibration isolator coupling the battery to the plate.

The invention concerns an arrangement for providing a pulsing compressive force for soil compaction devices. It comprises a first mass (1), which provides a contact surface (2) for transferring the pulsing compressive force onto the ground surface (3) to be compacted, as well as a second mass (4), which via a spring-damper-system (5, 6) is coupled to the first mass (1) to form a vibrating system (1, 4, 5, 6). Further, it comprises an unbalance exciter (7) by means of which the vibrating system (1, 4, 5, 6) can be excited to vibrate.

The second mass (4) in doing so exerts in the static state via the first spring-damper-system (5, 6) a static force in direction of gravity (S1) on the first mass (1). The first mass (1) and the second mass (4) are coupled to one another via the spring-damper-system (5, 6) in such a way that no forces can be transferred from the first mass (1) to the second mass (4) in the direction of gravity (S1) and no forces can be transferred from the second mass (4) to the first mass (1) opposite to the direction of gravity. Furthermore the arrangement is designed such that the coupling of the two masses (1, 4) in the intended operation can be temporarily suspended by a vibratory movement of the second mass (4) opposite to the direction of gravity, the second mass (4) can then in the uncoupled state execute a part of its oscillation path, and the coupling of the masses (1, 4) via the first spring-damper-system (5, 6) is then, following a reversal in direction of the vibratory movement of the second mass (4), re-established.