Provided are: a main body (45) made of resin; a fastening counterpart (51) formed integrally with the main body; a metal load-receiving member (43) having an embedded part (46) embedded in the main body, and a shaft part (47) extending from the embedded part; and a reinforcement part (53, 55) having a rib (54, 56) and provided in the main body.

An air spring has an air-spring lobe made of elastomer material, which is clamped at the lobe ends thereof via connection parts between the sprung mass and the unsprung mass and is connected by way of the connection parts to the fastening parts of the sprung and the unsprung mass. The connection parts and the air-spring lobe enclose the working chamber that is under internal pressure and contains the air-spring volume. The working chamber is in connection with at least one air connection provided in the connection parts. At least one of the connection parts is connected to the associated fastening part by a releasable snap-in or latching connection and the snap-in or latching connection includes at least one air connection, to which a feed line or a hose for the compressed air supply is connected.

A vibration dampening system for a work vehicle may include a cab frame having a plurality of structural frame members, with the structural frame members including a first frame member extending along a first side of the cab frame and a second frame member extending along a second side of the cab frame. The second side is opposite the first side. In addition, the system may include a vibration damper coupled between the first and second frame members. The vibration damper may extend lengthwise between a first end coupled to the first frame member and a second end coupled to the second frame member. The vibration damper is configured to reduce an amount of vibrations being transmitted through the cab frame.

An air spring includes a closing member, a rolling piston, and an air spring bellows connected to the rolling piston and the closing member to form a fluid-filled pressure chamber. A level control system for supplying and/or discharging fluid may be integrated into the pressure chamber to control level position based on air spring stroke. The level control system may have a control valve and an actuator connected to the control valve. The actuator may include a guide tube coupled to the rolling piston or closing member, and movably arranged within the pressure chamber. An actuating member may include a pin member and may operate the control valve. A compression spring may have a central spring and a biasing spring, and the guide tube may include a control flange coupled to the pin member, and the biasing spring may be supported to press the pin member against the control valve.

A vibration dampening system for a work vehicle may include a chassis frame, a cab frame, and a suspension assembly coupled between the frames. The suspension assembly may include a superstructure having at least two mounting interfaces for coupling the cab frame to the superstructure and at least one support structure extending at least partially between the mounting interfaces. The support structure(s) include a first end portion, a second end portion opposite the first end portion, and a connector portion extending between the first and second end portions. In addition, the system includes an elastomeric vibration damper provided in association with the connector portion of the support structure(s) such that the vibration damper extends along an outer surface of the support structure(s) along at least a portion of the length of the connector portion. The elastomeric vibration damper is configured to reduce vibrations transmitted through the support structure(s).

An overland vehicle is provided which includes a chassis with a roll-over protection structure, a powertrain configured to generate power to drive the overland vehicle, a first suspension system configured as a chassis to ground suspension system, and an operator compartment. The vehicle may also include a second suspension system configured to pneumatically suspend the operator compartment within the chassis, where the second suspension system includes a plurality of pneumatic couplers, including at least a first pneumatic coupler suspending the operator compartment to the chassis along a first vector extending in a first direction, and a second countering pneumatic coupler suspending the operator compartment to the chassis along a second vector extending in a second direction, where the second direction is generally opposite the first direction. In another embodiment, the second suspension system may include a plurality of spaced apart pneumatic couplers, including at least a first pneumatic coupler suspending the operator compartment to a first side of the chassis, and a second pneumatic coupler suspending the operator compartment to a second side of the chassis.

Vehicle cab suspension control systems are disclosed herein. In some embodiments, the cab suspension control systems can include front cab-to-frame mounts that include controllable elastomer-based isolators that can provide real time variable damping to improve ride quality and/or road holding and reduce cab roll in response to, for example, input from one or more cab and/or frame mounted accelerometers, position sensors, etc. Embodiments of the control systems described herein can utilize a single vehicle controller (e.g., an ECU) to control all of the cab suspension components (e.g., semi-active damping technologies, air spring technologies, etc.) employed on a vehicle to provide a single suspension control solution that can provide improved ride performance, road holding, etc.

A vibration dampening system for a work vehicle may include a chassis frame extending lengthwise between a front end and a rear end. The chassis frame may include a first sidewall extending lengthwise along a first side of the frame between the front and rear ends and a second sidewall extending lengthwise along a second side of the frame between the front and rear ends. The system may also include a cab frame supported relative to the chassis frame via a suspension assembly, and a vibration damper coupled between the opposed first and second sides of the chassis frame. The vibration damper may extend lengthwise between a first end coupled to the first sidewall and a second end coupled to the second sidewall. The vibration damper is configured to reduce an amount of vibrations being transmitted through the chassis frame to the cab frame via the suspension assembly.

A cab and hood suspension system includes a cab suspension system, a hood suspension system, and a hood tilt system. The cab suspension system includes supporting spring elements and cab linkage configured to control movement of a cab relative to a chassis. The hood suspension system includes hood linkage configured to locate the hood relative to the chassis. The hood linkage is configured to match the movement of the cab linkage. The hood tilt system is provided by the hood linkage of the hood suspension system.

In one embodiment, a suspension system for a vehicle cab, the suspension system comprising: a structural assembly; a cab mounted to the structural assembly; a front axle coupled to the structural assembly; plural suspension units arranged forward of the axle and disposed between the cab and the structural assembly; and plural isolation mounts arranged rearward of the axle and disposed between the cab and the structural assembly.