Gearboxes for a skid steered vehicle including layouts in which all electric propulsion drive motors and electric steering motors are located on one side of the gearbox, and layouts in which the drive inputs of the electric propulsion drive motors are located face to face. Gear change units and gear packaging configurations suitable for such gearboxes.

A drive unit for a skid steered vehicle includes a controlled differential positioned between two shafts. The end of each shaft forms an output of the drive unit connected directly to the differential outputs via the shafts. A steer motor is in driveable communication with the differential, and an electric propulsion motor is in driveable communication with the shaft outputs. A gear reduction unit, and optional gear change unit, is positioned between the differential and the electric propulsion motor. The electric propulsion motor, the gear reduction unit and optional gear change unit are connected in a parallel connection with an output of the differential to the shaft outputs. The optional gear change unit includes an epicyclic gear reduction unit having an input and an output which provides drive input from the gear change unit to the shaft. A gear change set has a master gear that receives drive output from the electric propulsion motor, and slave gears which are driven by the master gear via one or more gear chains. A dog clutch slideably engages the input of the gear reduction unit and selectively engages with the master gear or slave gears so that the selected position of the dog clutch determines which gear is engaged.

A system and method for compensating reduced track speed because of engine droop for a work machine is disclosed. The system may comprise a frame, an attachment coupled to the frame, a ground-engaging mechanism adapted to support the frame, an engine, a motor, a track speed sensor, an engine speed sensor, and a controller. The engine may drive the ground-engaging mechanism and attachment. The engine may be coupled through a variable speed transmission to the ground-engaging mechanism and the attachment. They variable speed transmission may include a hydrostatic circuit. The controller may be adapted to send an increased transmission command signal based on a drop in the engine speed signal when the work machine engages an increased load. The increased transmission command signal may increase a motor speed to cause an increase in track speed to compensate at least a portion of the reduced track speed from the engine speed droop.

A track assembly includes a frame configured to be coupled to a chassis of a vehicle, a first wheel and a second wheel each pivotally coupled to the frame, a track engaging the first wheel and the second wheel, and a motor coupled to the track and the frame. The track extends along a track path that surrounds the first wheel and the second wheel. The motor is configured to drive the first wheel such that the track moves along the track path. The motor and the first wheel are aligned.

A transmission for an agricultural or heavy load vehicle is provided, and includes a central drive shaft, at least one planetary gearset comprising a planet carrier, at least one output drive element, and one brake device. The drive shaft is connected to the output drive element via the planetary gearset. The brake device is located between the planet carrier and the output drive element in the form of a ring gear, such that the output drive element can be coupled to the planet carrier via the brake device.

A drive assembly for a mining vehicle includes a frame, a housing coupled to the frame, and a motor positioned in the housing. The motor includes a motor frame with a first axial end and a second axial end opposite the first axial end. The drive assembly also includes a transmission that is positioned at least partially within the frame. The transmission is coupled to the motor frame at the first axial end. The drive assembly further includes a support assembly that couples the second axial end of the motor frame to the housing.

A modular drive system may include a motor assembly that includes a motor housing with a motor subassembly bolt pattern. The modular drive system may include a brake assembly that includes a brake housing with a brake subassembly bolt pattern. The modular drive system may include a final drive assembly that includes a final drive flange with a final drive subassembly bolt pattern.

A machine includes an engine compartment, an engine located within the engine compartment, a first compartment located on a first side of the machine, external to the engine compartment, and accessible via the engine compartment, as well as a second compartment located on a second side of the machine, external to the engine compartment, and accessible via the engine compartment. A first actuator is disposed on the first side of the machine and couples to a first linkage member that supports a work implement. A second actuator is disposed on the second side of the machine and couples to a second linkage member that supports the work implement. A first fuel tank is located in the first compartment, coplanar with the first actuator. A second fuel tank is located in the second compartment, coplanar with the second actuator.

A mobile work system and methods for operationally receiving a work performing and/or energy delivering attachment. A work platform is powered by a power output device and includes a source of electricity for powering the attachment. The platform has a first end and a second end generally opposite the first end. A first attachment interface is connected to the first end, and a second attachment interface, substantially operationally equivalent to the first attachment interface, is connected to the second end. The first end of the platform also includes a first steering mechanism, and the second end includes a second steering mechanism substantially operationally equivalent to the first steering mechanism, whereby the platform is configured to be propelled and steered in a first direction and propelled and steered in a second direction generally opposite the first direction by the first and second steering mechanisms, respectively.

A snow groomer with touch screen controls for tensioning tracks, suspension, drive unit, accessories and other, comprising: a plurality of tracks; at least one accessory device selected in a group comprising a shovel or blade, a tiller assembly and a winch assembly; and a user interface comprising a display and a selector device for receiving commands from an operator, preferably the selector device is a device that detects a touch of an operator on the display; a control unit coupled to the user interface, in particular to the display, for sending images to be displayed to the display and receiving commands from the display which are related to the touches detected; wherein the control unit is configured to display on the display a main screen divided into a plurality of main screen portions, wherein the plurality of main screen portions are displayed together in the main screen and each in a different position in the main screen; wherein each main screen portion is configured to display an image that illustrates one or more pieces of data and/or information correlated to the tracked vehicle; the control unit is configured to detect one or more selections made by an operator, preferably on the display by means of a touch, corresponding to the type(s) of data or information that are required to be displayed in each portion of the display, and to display a main screen portion in each portion of the display, wherein each main screen portion is configured to illustrate a respective image relating to the data or information selected by the operator for said portion of the display.