A tandem suspension system. At least two parallel axles are connected via two eyeleted leaf springs. The eyeleted leaf springs have ends that terminate in eyelets. Each eyelet receives a bushing and adjustable pin. A bracket secures the axles to the eyeleted leaf springs. The eyeleted leaf springs are camelback leaf springs, planar leaf springs or bent leaf springs. Additional leaf springs are also provided.

A vehicle with a chassis supported by a multiple-lifting-tandems suspension of four, six, eight, ten or twelves lifting tandem pairs, where each lifting tandem pair comprises a front wheel and a rear wheel rotatably mounted to a rocker arm whereas both wheels may or may not be steerable; a link arm having a proximal end rotatably mounted to the chassis and a distal end rotatably mounted to a central portion of the rocker arm; an actuator having a proximal end rotatably mounted to the chassis a distance from the proximal end of the link arm and a distal end rotatably mounted to a central portion of the rocker arm or to a distal end of the link arm, the actuator extending to move the rocker arm to an extended position and retracting to move the rocker arm to a retracted position; and drive means engaging each front wheel and each rear wheel.

A knuckle-boom loader trailer has a trailer frame, a heavy equipment package of a knuckle-boom crane and an operator cab mounted on top of the trailer frame, and a walking-beam suspension propping up the trailer frame.

The invention relates to a tracked vehicle (11) comprising a vehicle body (30), at least one track assembly (21) and a suspension device (S). Said track assembly (21) is arranged to be supported by said vehicle body (30) by means of said suspension device (S), said track assembly comprising a track support beam (22) for supporting a plurality of road wheels (23, 23a), an endless track (25) being disposed around said road wheels. Said suspension device (S) comprises a bogie arrangement (50) rotatably attached to a fastening point (P0) of said vehicle body (30) about an axis of rotation (Z0) transversal to the longitudinal extension of said track assembly (21) and attached to said track support beam (22) in connection to at least two fastening points (P1, P2) so that the track support beam (22) is allowed to rotate in a rotational plane extending along the longitudinal extension of said track support beam (22) about said axis of rotation.

An air spring for use in an axle/suspension system of a heavy-duty vehicle includes a bellows and a piston. The bellows includes a bellows chamber. The piston includes a top portion, a bottom portion and a support stud. The support stud includes a first end and a second end, the first end of the support stud is secured to the top portion or the bottom portion of the piston, the support stud extending between the top portion and the bottom portion of the piston.

An air spring for use in an axle/suspension system of a heavy-duty vehicle includes a bellows and a piston. The bellows includes a bellows chamber. The piston includes a top portion, a bottom portion and a support stud. The support stud includes a first end and a second end, the first end of the support stud is secured to the top portion or the bottom portion of the piston, the support stud extending between the top portion and the bottom portion of the piston.

The present disclosure discloses an agitator truck, and the agitator truck includes a frame; a first axle assembly; a second axle assembly, where the second axle assembly and the first axle assembly are disposed along a front-rear direction in a spaced manner, the second axle assembly includes two vehicle axle assemblies that are disposed along the front-rear direction in a spaced manner, each of the vehicle axle assemblies includes an axle case assembly, the axle case assembly includes an axle case component and two half axles, and the two half axles are located inside the axle case component; at least one of the two vehicle axle assemblies is an electric drive axle assembly, the electric drive axle assembly further includes an electric power assembly, the electric power assembly includes a power motor, a transmission, and a differential, the transmission has a transmission case, the power motor is fixed to the transmission case, the differential is supported on the transmission case, the differential is located inside the axle case component, and the transmission case is fixed onto the axle case component; and a suspension system, where each of the vehicle axle assemblies is connected to the frame through the suspension system. The agitator trunk according to the present disclosure high has a compact structure and integration degree and is environmental friendly.

This invention provides a wheelchair with four-wheel independent suspension and modular seating, allowing for customized seat selection and a variable ride. It includes a chair assembly, a chassis assembly and a suspension assembly. The chair assembly includes a seat; a seat mount; a seat angle adjuster; and a pillar. The chassis assembly includes a chassis; and a handle assembly. The suspension assembly incudes a forward suspension assembly and a rear suspension assembly. In another embodiment, the wheelchair includes a chair assembly with handles, a main cross beam and a suspension spring assembly.

This invention provides a wheelchair with four-wheel independent suspension and modular seating, allowing for customized seat selection and a variable ride. It includes a chair assembly, a chassis assembly and a suspension assembly. The chair assembly includes a seat; a seat mount; a seat angle adjuster; and a pillar. The chassis assembly includes a chassis; and a handle assembly. The suspension assembly incudes a forward suspension assembly and a rear suspension assembly. In another embodiment, the wheelchair includes a chair assembly with handles, a main cross beam and a suspension spring assembly.

The present disclosure discloses an agitator truck, and the agitator truck includes a frame; a first axle assembly; a second axle assembly, where the second axle assembly and the first axle assembly are disposed along a front-rear direction in a spaced manner, the second axle assembly includes two vehicle axle assemblies that are disposed along the front-rear direction in a spaced manner, each of the vehicle axle assemblies includes an axle case assembly, the axle case assembly includes an axle case component and two half axles, and the two half axles are located inside the axle case component; at least one of the two vehicle axle assemblies is an electric drive axle assembly, the electric drive axle assembly further includes an electric power assembly, the electric power assembly includes a power motor, a transmission, and a differential, the transmission has a transmission case, the power motor is fixed to the transmission case, the differential is supported on the transmission case, the differential is located inside the axle case component, and the transmission case is fixed onto the axle case component; and a suspension system, where each of the vehicle axle assemblies is connected to the frame through the suspension system. The agitator trunk according to the present disclosure high has a compact structure and integration degree and is environmental friendly.