A vibration device belongs to the field of vibration machinery technologies, and includes an eccentric vibrator, a vibration motor, and a servo linear motion system. The eccentric vibrator includes at least a first eccentric body, a second eccentric body, and a connecting shaft. At least one of the first eccentric body or the second eccentric body is connected to the connecting shaft by a spiral groove and a boss structure matching the spiral groove. The servo linear motion system is connected to the connecting shaft. The servo linear motion system pushes the connecting shaft to move linearly, and drives the second eccentric body to rotate in a circumferential direction, and the first eccentric body remains stationary, so that adjustment of relative positions of the first eccentric body and the second eccentric body in the circumferential direction is implemented, and the purpose of controlling the magnitude of an exciting force in real time in a working process of equipment is implemented.

A vibratory mechanism may include a support housing extending between a first end and a second end and disposed along a common axis of the drum assembly, a first shaft coupled to the first end of the support housing and rotatably movable about the common axis, a second shaft coupled to the second end of the support housing and axially movable along the common axis, an eccentric mass disposed between the first shaft and the second shaft and rotatable about a travel radius, a first link pivotally coupling the eccentric mass to the first shaft, and a second link pivotally coupling the eccentric mass to the second shaft.

A vibratory compactor that generates vibrations by rotation of eccentric masses is provided, which includes an inner eccentric rod positioned inside a roller drum of the vibratory compactor and provided with a rack formed on one side of the inner eccentric rod, a pinion engaged with the rack, a variable eccentric weight engaged with the pinion so that a distance between the variable eccentric weight and a rotation axis of the inner eccentric rod is changed as the pinion is rotated, and an outer eccentric tube including a hole formed thereon to guide movement of the rack back and forth and a support fixture formed thereon to fix a shaft of the pinion so that the pinion is rotated in engagement with the rack, wherein when the inner eccentric rod moves back and forth, the pinion that is engaged with the rack is rotated as much as the movement of the rack, and as a position of the variable eccentric weight is changed, an amplitude of vibration of the roller drum is changed.

A steering wheel includes a ring-shaped rim is to be gripped by a driver (the rim includes a rim core and a rim molding portion covering the rim core), a boss disposed at the center of the rim, plural spokes connecting the rim with the boss, an arm whose base end portion is integrated with the rim core and that is extended toward the inside of the rim core in a cantilever manner, and a vibration generator attached to the arm for generating vibrations that are to be transmitted to the rim through the arm.

An eccentric assembly for a compaction machine comprises an outer eccentric member that is longitudinally elongated cylinder shaped and has a partial longitudinal opening through the length; an inner eccentric member that is longitudinally elongated cylinder shaped and has a partial longitudinal opening through the length and rotatably connected inside of said outer eccentric member so that the inner eccentric member can rotate with respect to the outer eccentric member around the same axis of rotation.

A steering wheel includes a ring-shaped rim is to be gripped by a driver (the rim includes a rim core and a rim molding portion covering the rim core), a boss disposed at the center of the rim, plural spokes connecting the rim with the boss, an arm whose base end portion is integrated with the rim core and that is extended toward the inside of the rim core in a cantilever manner, and a vibration generator attached to the arm for generating vibrations that are to be transmitted to the rim through the arm.

The present disclosure presents an eccentric assembly for a compaction machine comprising: an outer eccentric member that is longitudinally elongated cylinder shaped and has a partial longitudinal opening through the length; an inner eccentric member that is longitudinally elongated cylinder shaped and has a partial longitudinal opening through the length and rotatably connected inside of said outer eccentric member so that the inner eccentric member can rotate with respect to the outer eccentric member around the same axis of rotation.

The disclosure relates to a road finishing machine with a screed for producing a paving layer, wherein the screed includes at least one compacting unit for precompacting paving material supplied to the screed. The compacting unit includes at least one eccentric bushing mounted on an eccentric shaft supporting the same and rotatable to a desired angle of rotation to thereby continuously variably set a desired tamper stroke of a tamper bar of the compacting unit. For rotating the eccentric bushing, the compacting unit includes at least one adjusting mechanism, wherein the adjusting mechanism includes an adjusting drive mounted on the eccentric shaft and rotatable along with the eccentric shaft. The disclosure furthermore relates to a method for a continuously variable tamper stroke adjustment at a compacting unit of a road finishing machine.

A vibration generator for a vibrating pile driver includes a generator housing, in which a generator gear mechanism is arranged, which includes at least two parallel shafts rotatably mounted in bearings held by the generator housing, and connected to at least one drive to put them into rotation, and to at least two imbalance masses attached to one or more of the shafts. The at least one drive is formed by a drive unit, in each instance, which includes an electric motor and a drive gear mechanism connected to the motor. The drive unit is positioned on the generator housing, on the outside, offset from the bearings held by the generator housing, in the direction of the axes of rotation of the shafts, and not axially between two bearings of a shaft. The drive gear mechanism is connected to at least one of the shafts.