A suspension system for an operator station of a work vehicle having a chassis includes a subframe structure, a plurality of mounting pads, a plurality of shock absorbers, a rear lateral rod, a front stabilizer, and a pitch control stabilizer. The plurality of mounting pads is positioned on a top surface of the subframe structure. The plurality of shock absorbers connects between the chassis and the subframe structure near each of the mounting pads. The rear lateral rod connects to the rear side of the subframe structure and to the chassis. The front stabilizer connects to the front side of the subframe structure and to the chassis. The pitch control stabilizer connects to the right side of the subframe structure and to the chassis.

A suspension system for an operator station of a work vehicle having a chassis includes a subframe structure, a plurality of mounting pads, a plurality of shock absorbers, a rear lateral rod, a front stabilizer, and a pitch control stabilizer. The plurality of mounting pads is positioned on a top surface of the subframe structure. The plurality of shock absorbers connects between the chassis and the subframe structure near each of the mounting pads. The rear lateral rod connects to the rear side of the subframe structure and to the chassis. The front stabilizer connects to the front side of the subframe structure and to the chassis. The pitch control stabilizer connects to the right side of the subframe structure and to the chassis.

A working vehicle includes a vehicle body, a cabin on the vehicle body, a clutch pedal in the cabin, a clutch on the vehicle body, a clutch operator to engage and disengage the clutch, a linkage including first and second ends, the first end being connected to the clutch operator, and a linkage lock to interlock the clutch pedal with the second end of the linkage so that vibrations of the cabin are reduced or prevented from being transmitted to the clutch.

A truck or tractor vehicle includes a frame having a longitudinal centerline, an operator cab mounted relative to the frame via a cab suspension, the cab having a longitudinal centerline, the cab suspension comprising a front suspension and a rear suspension, the rear suspension comprising an adjustable panhard bar attached at a first end to the cab and attached at a second end to the frame, the adjustable panhard bar being adjustable in length to position the longitudinal centerline of the cab at a desired angle relative to the longitudinal centerline of the frame.

A modular saddle mount and modified frame cross member for reducing vibration in heavy equipment cabs preferably includes a heavy equipment modified frame cross member, two modular saddle mounts and at least two vibration isolators. The modified frame cross member includes a frame cross member, two sets of opposed mounting blocks and two cutout filler plates. The two cutout filler plates are secured in first and second cutouts. Each opposed mounting block is secured to an outside of the frame cross member. The modular saddle mount preferably includes a saddle base member and a pair of fastening inserts. A fastening cutout is formed in each end of the saddle base member. The pair of fastening inserts are retained on an inside surface of the saddle base member at opposing ends thereof. At least one isolator opening is formed through the base saddle member to receive a vibration isolator.

A modular saddle mount retained with isolator in a frame for reducing vibration in heavy equipment cabs preferably includes a heavy equipment modified frame cross member, two modular saddle mounts and at least two vibration isolators. The modified frame cross member includes a frame cross member, two sets of opposed mounting blocks and two cutout filler plates. The two cutout filler plates are secured in first and second cutouts. Each opposed mounting block is secured to an outside of the frame cross member. The modular saddle mount preferably includes a saddle base member and a pair of fastening inserts. A fastening cutout is formed in each end of the saddle base member. The pair of fastening inserts are retained on an inside surface of the saddle base member at opposing ends thereof. At least one isolator opening is formed through the base saddle member to receive a vibration isolator.

A modular saddle mount and modified frame cross member for reducing vibration in heavy equipment cabs preferably includes a heavy equipment modified frame cross member, two modular saddle mounts and at least two vibration isolators. The modified frame cross member includes a frame cross member, two sets of opposed mounting blocks and two cutout filler plates. The two cutout filler plates are secured in first and second cutouts. Each opposed mounting block is secured to an outside of the frame cross member. The modular saddle mount preferably includes a saddle base member and a pair of fastening inserts. A fastening cutout is formed in each end of the saddle base member. The pair of fastening inserts are retained on an inside surface of the saddle base member at opposing ends thereof. At least one isolator opening is formed through the base saddle member to receive a vibration isolator.

An isolator adapter insert for retention in a modular saddle mount or an isolator mounting plate for reducing vibration in heavy equipment cabs, which allows different size vibration isolators to be used in a single modular saddle mount or isolator mounting plate. The isolator adapter insert includes a location boss, which extends from a bottom of the isolator adapter insert. An isolator opening is formed through the isolator adapter insert to receive a specific size of vibration isolator. A plurality of threaded taps are formed through the isolator adapter insert, when a flanged vibration adapter is used. An outer perimeter of the location boss is configured to be received by the insert opening in the modular saddle mount or the isolator mounting plate.

A secondary retention device includes a bolt inserted through a cab floor and a modular saddle mount. A nut and the bolt retain the cab floor and the modular saddle mount together. A first alternative includes a yoke extending upward from the modular saddle mount, an extension plate extending downward from a bottom of the cab floor and a lock pin. A second alternative includes a bent over edge of the cab floor, a bent-up edge of the modular saddle mount and the lock pin. A third alternative includes a retention plate extending downward from the cab floor, a slot opening formed through a modular saddle mount to receive the retention plate and a fastener. A fourth alternative includes a curved tab extending upward from a modular saddle mount and a slot opening formed through the cab floor to receive the curved tab.

A spring supported tray for mitigating a dominant frequency imparted thereto is provided. The spring supported tray includes a tray including a topside and underside, and configured to support an object on the topside, and N springs supporting the tray, N being a positive integer. A first end of each of the N springs is disposed at the underside of the tray. A second end of each of the N springs is disposed so as to receive vibrational motion imparted to the second end of each of the N springs f.sub.dom a source of the vibrational motion, the vibrational motion having a dominant undesired frequency f.sub.dom. Each of the N springs has a spring constant k defined by the equation:

[00001]$k=\frac{f_n^{2}4{\pi }^{2}w}{Ng}$

where w denotes the collective weight of the tray and the object, g denotes the force of gravity, and f.sub.n denotes a natural frequency of the spring supported tray supporting the object, wherein f.sub.n is a lower frequency than the dominant undesired frequency f.sub.dom.