A clamp including: a holding portion and a fixing portion, wherein the fixing portion includes: a base, a support shaft that extends from the base in a direction away from the holding portion, a lock that is provided at a leading end of the support shaft and is formed to be able to be locked to the fixed portion, a spring that is provided in a surrounding region of the support shaft between the base and the lock, and is formed so as to be extendable in a direction in which the support shaft extends, and a vibration suppressor provided between two opposing surfaces of the spring that are adjacent to each other in a direction in which the support shaft extends and face each other.

A multi-dimensional magnetic negative-stiffness mechanism and a multi-dimensional magnetic negative-stiffness vibration isolation system composed thereof are provided. The multi-dimensional damping system is composed of a positive-stiffness mechanism, a multi-dimensional negative-stiffness mechanism, a floating frame, a vibration isolated body, and a mounting base. The positive-stiffness mechanism is a traditional elastic element connected to the vibration isolated body and the mounting base, and provides supporting forces in an X direction, a Y direction, and a Z direction, and a basic vibration isolation function. The multi-dimensional negative-stiffness mechanism is composed of at least two negative-stiffness magnetic groups. Each negative-stiffness magnetic group may provide one-dimensional or two-dimensional negative stiffness. Through a series connection of the at least two negative-stiffness magnetic groups, a two-dimensional or three-dimensional negative-stiffness effect may be implemented to improve the vibration isolation performance of the system in multiple dimensions.

A damper apparatus includes a shock-absorbing member configured to absorb a shock while restricting movement of a shaft relative to a housing. The shock-absorbing member includes a shock-receiving member configured to come into contact with one member, which is one of a large-diameter portion of the shaft and a restriction portion of the housing, and a pre-compression spring disposed between the other member, which is the other of the large-diameter portion and the restriction portion, and the shock-receiving member in a state where the pre-compression spring is compressed in advance in an axial direction. The pre-compression spring is configured to urge the one member in the axial direction via the shock-receiving member when the large-diameter portion is relatively moved toward the restriction portion beyond a prescribed position.

Various systems are provided for damping vibration in a mobile radiographic imaging system. In one embodiment, a vibration damping assembly for a C-arm imaging system comprises a pivot element rotatably coupled to a toe portion of the C-arm imaging system and configured to form an interface between the toe portion, a damping element, and a ground surface on which the C-arm imaging system sits.

A damping device includes an upper damping connecting member, a lower damping connecting member opposite to and spaced apart from the upper damping connecting member, a steel wire rope damper disposed between the upper damping connecting member and the lower damping connecting member, and a carrying damper connected with the upper damping connecting member. Two ends of the steel wire rope damper are connected with the upper damping connecting member and the lower damping connecting member, respectively.

One example vibration damping bracket provided in some embodiments of this application includes a fastening bracket, a first bracket body, a second bracket body, a first vibration damping component, and a second vibration damping component. The first bracket body is elastically connected to the fastening bracket by using the first vibration damping component. The second bracket body is elastically connected to the first bracket body by using the second vibration damping component. The first vibration damping component includes a metal elastic part configured to absorb vibration, and the second vibration damping component includes a rubber elastic part configured to absorb vibration.

A vibration isolator, system, and method for minimizing propagation of vibrations between structures are configured to decouple axial and lateral structural modes. The vibration isolator includes an axial flexural support that provides axial compliance relative to a central axis and a lateral elastomeric support that provides lateral compliance relative to the central axis. The axial flexural support and the lateral elastomeric support provide stiffness about the central axis. The vibration isolator includes a first mount coupled to a first external structure and a second mount coupled to a second external structure. The axial flexural support is coupled to the first mount and the lateral elastomeric support is coupled to the second mount and the axial flexural support. Using an axial flexural support and a lateral elastomeric support enables tuning of the structural modes in one axis while minimizing the effects to the structural modes in the orthogonal axes.

The present application relates to an adjustment bushing, a steering column and a vehicle. The adjustment bushing comprises: a frame provided with a linear track that allows an adjusting bolt to slide left and right; and damping structures respectively disposed near both ends of the linear track and including convex hulls extending from upper and lower inner sides of the frame into the linear track, wherein, when the adjusting bolt slides to both ends of the linear track to extreme positions of the linear track, the convex hulls are squeezed between the adjusting bolt and the frame to play a damping role. The adjustment bushing can rebound after the endurance adjustment, has excellent noise reduction and energy absorption effect, and improves the durability and service life of the adjustment bushing.

It is provided a vibration damper system for a steering wheel arrangement of a motor vehicle, which is provided for arrangement on a steering wheel element of the steering wheel arrangement. The vibration damper system comprises a vibration damping mass for damping the vibration of the steering wheel arrangement, an elastic bearing element which comprises a fastening element for fastening the elastic bearing element to one of bearing element and vibration damping mass, and a fastening means for fastening to the other of steering wheel element and vibration damping mass, wherein the elastic bearing element sectionally rests against the fastening means.

Disclosed is a passive shock-absorbing system for a sighting apparatus installed on a device including equipment generating the shocks, the system including two rigid plates substantially parallel to one another, via a first plate secured to the part of the device including the equipment and a second plate secured to the sighting apparatus, the plates being connected to one another by a position return component returning the plates to a determined relative rest position after absorbing a shock. The system is characterized in that the position return component includes a line-point-plane positioning unit with balls between the two plates and a set of elastic return members connecting the two plates to one another. A corresponding device is also desclosed.