An isolation system for a vehicle having a rear frame attached to a front frame. The rear frame supports a greater portion of a total force applied to the vehicle than the front frame. The isolation system includes at least one isolating device positioned between the rear and front frames. The isolating device supports a portion of the total force applied to the vehicle in a direction in which the isolating devices is positioned. The isolation system includes a force limiting device positioned near the isolating device and a motion limiting torque rod attached to the rear and front frames. The force limiting device limits the amount of load applied to the isolating device above a maximum load. The motion limiting torque rod prevents or limits movement of the rear frame relative to the front frame in the direction in which it is aligned.

A cabin assembly for construction equipment includes a main frame; a mount mounted on the main frame; a cabin fixed to the main frame by the mount while spaced a predetermined distance apart therefrom; a retainer for connecting the cabin to the main frame and fixing the cabin to the main frame such that the cabin is not inclined at a first angle or greater with respect to the main frame; and a support installed on one of the main frame and a lower surface of the cabin, including an end portion facing the other of the main frame and the lower surface of the cabin while being spaced apart therefrom, and when the cabin is inclined at a second angle or greater with respect to the main frame, contacting the other of the main frame and the lower surface of the cabin to support the cabin.

A work vehicle includes a vehicle body frame, a cab disposed on an upper side of the vehicle body frame, brackets connected to the cab, limiting sections and buffering devices. The limiting sections are disposed between the brackets and the vehicle body frame. The limiting sections limit a movement range of the cab with respect to the vehicle body frame. The buffering devices are disposed between the brackets and the vehicle body frame.

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 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 cab mounting assembly connecting a cab and a frame is configured so that grease is supplied to contact portions to prevent wear and noise. The cab mounting assembly hinge-connects a frame of a vehicle and a cab in which an occupant sits. A collar is disposed outside a fixing bolt hinge-connecting the frame and the cab. A hinge cushion is fitted around the collar to buffer vibration transmitted to the cab. At least one surface of an internal surface of the hinge cushion and an external surface of the collar is provided with a groove through which oil supplied into the hinge cushion flows to an end portion of the hinge cushion.

The vibration of a cab deck as well as the mass of a deck supporting member is suppressed. A slewing frame of an upper slewing body includes a front plate connected to a second side plate. A cab deck is disposed on a front side of an engine deck with a gap between the cab deck and the engine deck. A deck supporting member is connected to the second side plate and the cab deck. When viewed along an up-and-down direction, a connection portion of the front plate to be connected to the second side plate is opposed to, in the lateral direction via the second side plate, a connection portion of the deck supporting member to be connected to the second side plate.

A tilting system for a suspended cab of a work vehicle includes a hydraulic cylinder coupled to a chassis of the work vehicle at a first end and the suspended cab at a second end. Further, the hydraulic cylinder is configured to extend to drive the suspended cab to rotate from a lowered position to a raised position. In addition, the hydraulic cylinder is configured to be substantially horizontal while the suspended cab is in the lowered position.

A suspension system for controlling multiple degrees of freedom of a cab of a vehicle has mounting pads that support the cab with a spring assembly connected between the chassis and each mounting pad, allowing the cab to move with multiple degrees of freedom. A lateral rod connects with one of the mounting pads, with the chassis, and restricts sideways motion of the cab. A longitudinal rod connects with one of the mounting pads, with the chassis, and restricts forward motion of the cab. A stabilizer bar connects with one of the front mounting pads, one of the rear mounting pads, the chassis structure, and controls forward pitch rate of the cab. A roll control bar connects with the rear mounting pads and the chassis structure, and controls lateral roll rate of the cab.

A sound monitoring system for collecting and processing an environmental noise level surrounding a work machine is disclosed. The sound monitoring system may include an acoustic sensor having a plurality of microphones arranged into a signal detection array to capture the environmental noise level and generate an acoustic output signal. Additionally, the sound monitoring system may include a controller communicably coupled to the acoustic sensor and programmed to perform a signal processing to identify a first portion and a second portion of the acoustic output signal. Furthermore, the controller may be programmed to generate a controller output signal based on the first and second portions of the output level. A speaker may be located on the work machine and communicably coupled to the controller such that the speaker receives and emits the controller output signal.