A spring cup for a primary suspension of a rail vehicle, wherein the spring cup has a longitudinal axis and a spring base for transmitting occurring forces onto a chassis frame of the rail vehicle, and includes a spring seat for receiving at least one spring element, wherein the spring seat is supported against the spring base of the spring cup, where a central section of the spring seat is formed as a contact element having a contact surface for an emergency spring device, and the spring seat is configured such that a force acting on the contact surface is introduced into the spring base outside of the projection surface, resulting from the projection at least of the contact surface along the longitudinal axis onto the spring base in order to achieve a transfer of force from the center of the spring base.

An active roll control apparatus is provided. To adjust a stiffness value of the stabilizer bar by moving a stabilizer bar installed between left and right wheels of a vehicle and extending in a first direction and a stabilizer link connected to the stabilizer bar, the active roll control apparatus includes a sliding part having one side connected to the stabilizer bar and the other side connected to the stabilizer link to slide the stabilizer link in a second direction perpendicular to the first direction, and a movement restricting part installed at the sliding part to restrict movement when the sliding part slides.

A wrench and nut combination, including: a wrench lug including: a wrench lug feature that substantially mates with a nut feature of a nut of a shock absorber during a first rotation of said nut, relative to external body threads on a body of the shock absorber, in a first direction, wherein the wrench lug feature and the nut feature release during a second rotation of said nut, relative to the external body threads, in a second direction, wherein at least one of the first rotation and the second rotation causes an adjustment to a compressive coil spring pre-load of a set of coil springs disposed in the shock absorber.

A wheel suspension arrangement including a suspension spring, at least one control member arranged to control a stiffness of said suspension spring. The control member is displaceable relative to said suspension spring between a retracted position, in which the control member does not interfere with an operation of the suspension spring, and an advanced position, in which it interferes with the operation of the suspension spring in a way that the stiffness of said suspension spring is increased. The wheel suspension arrangement further includes a biasing means configured to bias said control member towards said retracted position.

A device for adjusting a foot point of a vehicle spring element includes a first wall element for connecting to a vehicle, a second wall element spaced from the first wall element and connecting to the spring element, and a chamber disposed between the first wall element and the second wall element for changing the distance between the first wall element and the second wall element by changing a volume of the chamber, the chamber having an incompressible fluid and the first and/or second wall element including a passage opening for the incompressible fluid to the chamber. In embodiments, the passage opening is fluidly connectable to a supply/discharge device for the incompressible fluid, and the chamber has a chamber wall with a third wall element extending from the first wall element to the second wall element, the mass of which is constant when the volume of the chamber is changed.

A suspension device has an upper shell having a stepped section around an inner circumferential surface; a lower shell; a ball screw shaft rotatably supported by the upper shell; a bearing unit arranged between a part of the ball screw shaft and the upper shell, and having an outer side part in a radial direction including a side surface that comes in contact with a side surface on the other side in the axial direction of the stepped section; a ball nut screwed on the ball screw shaft; an inner tube joined to the lower shell and the ball nut; an electric motor; and a coil spring, and a circumscribed circle diameter of the ball nut and the inner tube is less than an inner diameter dimension of the stepped section.

A vehicle height adjustment device includes a changer, a vehicle speed obtainer, a vehicle height controller, and a malfunction detector. The changer is configured to change a relative position of a body of a vehicle, which includes a plurality of wheels, relative to an axle of each of the plurality of wheels of the vehicle. The vehicle speed obtainer is configured to obtain a vehicle speed, which is a traveling speed of the vehicle. The vehicle height controller is configured to control a vehicle height, which is a height of the body, based on the vehicle speed obtained by the vehicle speed obtainer. The malfunction detector is configured to detect a failure of the vehicle speed obtainer to obtain an accurate value of the vehicle speed.

An electric vehicle, an automatic driving method and equipment, and an automatic freight transportation method and system, the electric vehicle (1) comprising a plurality of sets of wheel assemblies (2) disposed at the lower surface of a chassis (10), wherein the plurality of sets of wheel assemblies (2) are independent of each other; each wheel assembly (2) comprises a wheel (21), a driving device (22) and a displacement device (23); the driving devices (22) drives the wheels (21) to rotate, and the displacement devices (23) at least drives the wheels (21) to move along the vehicle body width direction (X) of the electric vehicle (1). Each set of wheel assemblies (2) of the electric vehicle (1) has an independent power system, and the wheels (21) of each of the wheel assemblies (2) are independently controlled by means of the driving devices (22) and the displacement devices (23), so that when used to carry people, the electric vehicle (1) may meet the driving requirements of being highly flexible, stable, safe and comfortable; and when used for loading goods, the electric vehicle (1) may meet the cargo transportation requirements of being fully automated, highly efficient, highly accurate, low cost and highly safe.

A suspension strut includes a cylinder having a piston moveable in the cylinder, a coil spring arranged around the cylinder, and an abutment element for mounting the coil spring. The position of the abutment element is adjustably fixable along the longitudinal direction of the cylinder with respect to one direction, the cylinder has a male thread, and the abutment element has a female thread corresponding to the male thread. A thread insert is arranged in the abutment element, the thread insert has a holding region and an actuating region, and the region between the holding region and the actuating region can be arranged in the threads of the male thread of the cylinder. A holding means for the holding region is in the abutment element, the actuating region is mounted moveably in the abutment element, and the diameter of the thread insert is variable by movement of the actuating region.

A vehicle height adjustment device of the present invention includes a motion conversion unit that includes a rotating member and a linear motion member, and that converts a rotational motion of the rotating member into a linear motion of the linear motion member, a plurality of motors, a driven gear coupled to the rotating member, a plurality of drive gears that meshes with the driven gear, and a spring seat that is coupled to the linear motion member, and that supports one end of a suspension spring interposed between a vehicle body and an axle of a vehicle, wherein after driving the spring seat and then stopping the spring seat, some drive gears of the drive gears are driven in a direction opposite a drive direction of the spring seat.