Most vibration generators that use rotating eccentric masses of prior arts have disadvantages in controlling vibration magnitude such as stopping equipment, adjusting intermittently, or limitation on control range. In the present invention to continuously change the direction of a generated vibration force or its magnitude, the principle of synthesizing simple harmonic motions by phase shifting is used and two methods, called a mechanical phase shifting and a motor speed controlled phase shifting, are provided. A mechanical phase shifting device includes an angle adjusting plate to change the phases of two eccentric mass rotators and two pairs of gears and links for a reverse rotation of eccentric masses. A motor speed controlled phase shifting is enabled by acceleration and deceleration of a motor. A moment generator comprises two sets of eccentric mass vibrators connected by extending shafts between them and can be used for industry shakers, stabilizer's for floating bodies, and so on.

A system includes a camshaft disposed along an axis from a drive end to a opposite end, and the camshaft includes a plurality of journals configured to support the camshaft and is spaced along the axis. The camshaft includes a plurality of cams spaced along the axis, and is disposed along the camshaft in sets, where each set is disposed between a respective pair of journals of the plurality of journals. The camshaft includes a plurality of mass portions, where each mass portion is disposed between a set of cams and a respective journal. The plurality of mass portions is disposed along the camshaft such that a center of mass of the plurality of mass portions is nearer to the drive end than to the opposite end, and the plurality of mass portions is configured to increase a natural frequency of the shaft.

A system includes a camshaft disposed along an axis from a drive end to a opposite end, and the camshaft includes a plurality of journals configured to support the camshaft and is spaced along the axis. The camshaft includes a plurality of cams spaced along the axis, and is disposed along the camshaft in sets, where each set is disposed between a respective pair of journals of the plurality of journals. The camshaft includes a plurality of mass portions, where each mass portion is disposed between a set of cams and a respective journal. The plurality of mass portions is disposed along the camshaft such that a center of mass of the plurality of mass portions is nearer to the drive end than to the opposite end, and the plurality of mass portions is configured to increase a natural frequency of the shaft.

A transmission assembly for a motor vehicle having a gearbox including a clutch, a clutch-release device, a reversible rotary electric machine provided with a rotor provided with a central opening, and an intermediate shaft between the clutch and the rotor of the electric machine, the shaft supporting the clutch-release device at the front and being inserted in the central opening of the rotor. The transmission assembly includes a dry friction clutch provided with a reaction plate, and comprises, at the front, a damping double flywheel configured such as to be attached to the crankshaft of the heat engine of the vehicle and to form the reaction plate of the dry friction clutch and, at the rear, a torsion damper configured such as to be rotatably connected to the input shaft of the gearbox, the rotor of the electric machine being attached to the torsion damper.

A system includes a camshaft disposed along an axis from a drive end to a opposite end, and the camshaft includes a plurality of journals configured to support the camshaft and is spaced along the axis. The camshaft includes a plurality of cams spaced along the axis, and is disposed along the camshaft in sets, where each set is disposed between a respective pair of journals of the plurality of journals. The camshaft includes a plurality of mass portions, where each mass portion is disposed between a set of cams and a respective journal. The plurality of mass portions is disposed along the camshaft such that a center of mass of the plurality of mass portions is nearer to the drive end than to the opposite end, and the plurality of mass portions is configured to increase a natural frequency of the shaft.

A method of assembling a rotor stack comprising a plurality of component parts, the method comprising: determining swash measurements for interfacing surfaces of the plurality of parts; calculating a runout estimate for a plurality of relative orientations of the parts; applying an optimisation algorithm to identify an optimal orientation from the plurality of relative orientations based on the runout estimates; and assembling the parts in the optimal orientation.

A solar bracket with a damping mechanism is provided and includes: a bracket structure including a fixed component and a rotating component; a solar panel installed on the rotating component; and a damping mechanism including a rotating assembly and a damping component. The rotating assembly includes a first rotating part and a second rotating part, the first rotating part is fixedly installed on the rotating component, the second rotating part is connected to the damping component, the first rotating part is transmitted and connected to the second rotating part, and a rotation radius of the first rotating part is greater than that of the second rotating part, when the rotating component drives the first rotating part to rotate, the first rotating part drives the second rotating part to rotate, and the second rotating part drives the damping component to move to limit a rotation speed of the rotating component.

A solar bracket with a damping mechanism is provided and includes: a bracket structure including a fixed component and a rotating component; a solar panel installed on the rotating component; and a damping mechanism including a rotating assembly and a damping component. The rotating assembly includes a first rotating part and a second rotating part, the first rotating part is fixedly installed on the rotating component, the second rotating part is connected to the damping component, the first rotating part is transmitted and connected to the second rotating part, and a rotation radius of the first rotating part is greater than that of the second rotating part, when the rotating component drives the first rotating part to rotate, the first rotating part drives the second rotating part to rotate, and the second rotating part drives the damping component to move to limit a rotation speed of the rotating component.

A solar bracket with a damping mechanism is provided and includes: a bracket structure including a fixed component and a rotating component; a solar panel installed on the rotating component; and a damping mechanism including a rotating assembly and a damping component. The rotating assembly includes a first rotating part and a second rotating part, the first rotating part is fixedly installed on the rotating component, the second rotating part is connected to the damping component, the first rotating part is transmitted and connected to the second rotating part, and a rotation radius of the first rotating part is greater than that of the second rotating part, when the rotating component drives the first rotating part to rotate, the first rotating part drives the second rotating part to rotate, and the second rotating part drives the damping component to move to limit a rotation speed of the rotating component.

A solar bracket with a damping mechanism is provided and includes: a bracket structure including a fixed component and a rotating component; a solar panel installed on the rotating component; and a damping mechanism including a rotating assembly and a damping component. The rotating assembly includes a first rotating part and a second rotating part, the first rotating part is fixedly installed on the rotating component, the second rotating part is connected to the damping component, the first rotating part is transmitted and connected to the second rotating part, and a rotation radius of the first rotating part is greater than that of the second rotating part, when the rotating component drives the first rotating part to rotate, the first rotating part drives the second rotating part to rotate, and the second rotating part drives the damping component to move to limit a rotation speed of the rotating component.