The turning radius of a differentially steered vehicle towing a trailer is controlled when turning so that its turning radius is greater than a minimum allowable turning radius. The turning radius may be autonomously adjusted using a controller to monitor the instantaneous rotational speed differential between the driven wheels and increase or decrease the relative speed between the wheels when the instantaneous rotational speed differential exceeds a threshold rotational speed differential, indicating a turn which is too tight. Alternately, the turning radius may be controlled by the vehicle's operator, who receives a signal from the controller indicating that the vehicle's turning radius is less than the minimum allowable. The operator may then take action to enlarge the turning radius using manual controls.

A transaxle casing has a fluid sump having a gear top cover, an HST, a reduction gear train and at least one axle disposed in the transaxle casing. The gear top cover accommodates a part of a rotation portion of the reduction gear train. An air supply and exhaust hole is disposed on an upper surface of the gear top cover facing an air sump and is arranged at a position different from a point above a bevel gear. A breather is attached at the air supply and exhaust hole, and a first inner wall extending downward from the upper surface of the upper casing member, is positioned between the part of the bevel gear and the air supply and exhaust hole.

An axle system includes an axle stub, a first connecting section and a second connecting section, wherein the axle stub is embodied on its outer side so as to be essentially rotationally symmetrical about a stub axis and has two ducts which extend parallel to the stub axis in certain regions, wherein the connecting sections lie in a connecting plane which is oriented orthogonally with respect to the stub axis, wherein the axle stub has an attachment region for securing a brake carrier which extends parallel to the connecting plane.

Disclosed embodiments include steering circuits utilizing a controllable cross-feed loop between left and right drive motor sides of an articulated power machine to reduce skidding caused by a turning operation in which an articulation actuator changes an articulation joint angle between a front frame member and a rear frame member of the power machine.

A transaxle with a brake of the present invention includes the braking device comprising a plurality of brake discs, fixing plates, and a brake operating member, wherein the brake discs have an inner gear tooth portion that can be fitted to an outer gear tooth portion of an output gear of the motor shaft so as not to rotate relative to the outer gear tooth portion and is slidably fixed in the axial direction of the motor shaft, wherein the fixing plates are fixed to the transaxle casing so as not to rotate relative to each other and are slidably fixed in the axial direction of the motor shaft, and wherein the brake operating member provides a predetermined gap between the fixing plates and the brake discs when the brake discs are not pressed.

A hydrostatic transaxle includes: a casing; a hydraulic continuously variable transmission; and an oil filter that includes a filter body for filtering the hydraulic oil and a filter holding member configured to guide clean oil filtered in the filter body to a suction oil reservoir, in which the filter holding member includes a filter installation portion for installing the filter body, and a suction oil reservoir provided at a position different from the filter installation portion, and the filter installation portion and the suction oil reservoir are configured to be separable from each other and be couplable to each other to freely flow.

An extendable axle with wheels on a common centerline preferably includes a base housing, a left axle device, a right axle device, a left extension cylinder and a right extension cylinder. The left axle device slides into a left side of the base housing and the right axle device slides into a right side of the base housing. The left axle device preferably includes a base tube, a steering knuckle, a drive motor and a steering cylinder. The steering knuckle is pivotally engaged with an end of the base tube. The drive motor is retained on the steering knuckle. The steering cylinder pivots the steering knuckle. The right axle device is the left axle device rotated 180 degrees. The left extension cylinder extends the left axle device. The right extension cylinder extends the right axle device. The left drive motor and the right drive motor are on the same centerline.

A scissors lift vehicle includes a chassis, a first pair of wheels disposed at one end of the chassis and a second pair of steering wheels disposed at an opposite end of the chassis. The wheels include a circular profile having a radius R. The scissors lift vehicle includes a track having an upper surface and a lower surface extending aft at a height less than R above the travel surface. A pivot connection is coupled to the aft plate at a height less than R above the travel surface. A scissors stack assembly includes a plurality of paired scissors linkages. Each scissors linkage of a first pair of scissors linkages is coupled to a respective pivot connection. Each scissors linkage of a second pair of scissors linkages includes a truck coupled to a distal end. The truck is configured to engage the upper surface of the track.

An outdoor grounds maintenance vehicle is self-propelled by a hydrostatic traction drive system that provides dynamic braking to the vehicle without the need for separate service brakes acting on the wheels of the vehicle. An engine kill device can be manually actuated by the operator to access the dynamic braking of the traction drive system by reducing the speed of the prime mover that powers the pump of the traction drive system. This provides an auxiliary braking system that can be used in an emergency or on demand by the operator in the event the accelerator pedal does not properly control the pump swashplates. The operator can control the rate at which the auxiliary brake system reduces the speed of the prime mover to zero.

A self-propelled module for oversize loads includes two ground movement assemblies with oil-pressure controlled actuation; a transverse rocker arranged between the movement assemblies, which are coupled thereto independently; oil-pressure controlled suspension elements, arranged on corresponding oscillating supports coupled to the transverse rocker; and a load-bearing frame, supported by the oil-pressure controlled suspension elements. The load-bearing frame includes an oil-pressure controlled circuit adapted to serve the ground movement assemblies and the suspension means elements. The module further includes a rotary distribution unit, having a vertical axis, mounted on the load-bearing frame for supplying the ground movement assemblies and the oil-pressure controlled suspension elements, a first part of the rotary distribution unit being fixed to the load-bearing frame, and a second part being free to rotate about the vertical of the resting surface with respect to the load-bearing frame.