A mechanical leg comprises a frame, a retractable member, a wheel, an extension and retraction driving member, a travel driving member, an auxiliary leg, and an auxiliary wheel. The extension and retraction driving member is located on a side of the frame. The retractable member is connected to the extension and retraction driving member. The wheel is connected to the retractable member. The wheel is further connected to the travel driving member. A first end of the auxiliary leg is connected to the auxiliary wheel, and a second end of the auxiliary leg is located on the frame. The retractable member extends under the driving of the extension and retraction driving member to drive the wheel to jump. The wheel is driven by the travel driving member to move. When the auxiliary wheel contacts the ground, the mechanical leg moves with the rolling of the wheel and the auxiliary wheel.

A mechanical leg comprises a frame, a retractable member, a wheel, an extension and retraction driving member, a travel driving member, an auxiliary leg, and an auxiliary wheel. The extension and retraction driving member is located on a side of the frame. The retractable member is connected to the extension and retraction driving member. The wheel is connected to the retractable member. The wheel is further connected to the travel driving member. A first end of the auxiliary leg is connected to the auxiliary wheel, and a second end of the auxiliary leg is located on the frame. The retractable member extends under the driving of the extension and retraction driving member to drive the wheel to jump. The wheel is driven by the travel driving member to move. When the auxiliary wheel contacts the ground, the mechanical leg moves with the rolling of the wheel and the auxiliary wheel.

An embodiment of the invention provides a method and system including a sensor on a vehicle and a processor connected to the sensor. The processor determines a probability of falling based on input from the sensor, whether the probability of falling exceeds a threshold, and a state of an operator of the vehicle. An actuator connected to the processor receives a signal from the processor when the probability of falling exceeds the threshold and when the state of the operator includes an impaired state. Stabilizer wheels are connected to the actuator, where the signal includes a command to deploy the stabilizer wheels.

Brackets for mounting auxiliary suspension systems, such as lift axle systems, to vehicles are disclosed herein. For example, brackets are disclosed for attaching lift axle hanger brackets and lift axle load springs to corresponding frame members. In some embodiments, the frame brackets can include physical features (e.g., a series of graduated steps in an edge portion thereof) to facilitate visual alignment of the lift axle with the vehicle frame members during installation. In other embodiments, the frame brackets can be two-piece brackets that enable the load springs to be removed and replaced without having to detach the frame bracket from the frame rail.

Brackets for mounting auxiliary suspension systems, such as lift axle systems, to vehicles are disclosed herein. For example, brackets are disclosed for attaching lift axle hanger brackets and lift axle load springs to corresponding frame members. In some embodiments, the frame brackets can include physical features (e.g., a series of graduated steps in an edge portion thereof) to facilitate visual alignment of the lift axle with the vehicle frame members during installation. In other embodiments, the frame brackets can be two-piece brackets that enable the load springs to be removed and replaced without having to detach the frame bracket from the frame rail.

A lifting arrangement for lifting a wheel axle of a vehicle comprising a first elongated member extending along a first axis comprising a vehicle frame coupling portion for connecting the lifting arrangement to a vehicle frame of the vehicle during use, a second elongated member extending along a second axis comprising a wheel axle coupling portion for connecting the lifting arrangement to the wheel axle of the vehicle during use, wherein the vehicle frame coupling portion and the wheel axle coupling portion are offset from each other by a length and wherein the lifting arrangement is arranged to adjust the length between a maximum length and a minimum length by axially moving the second elongated member along the second axis relative the first elongated member, wherein the lifting arrangement further comprises an engaging device for axially moving the second elongated member along the second axis relative the first elongated member.

A lifting arrangement for lifting a wheel axle of a vehicle comprising a first elongated member extending along a first axis comprising a vehicle frame coupling portion for connecting the lifting arrangement to a vehicle frame of the vehicle during use, a second elongated member extending along a second axis comprising a wheel axle coupling portion for connecting the lifting arrangement to the wheel axle of the vehicle during use, wherein the vehicle frame coupling portion and the wheel axle coupling portion are offset from each other by a length and wherein the lifting arrangement is arranged to adjust the length between a maximum length and a minimum length by axially moving the second elongated member along the second axis relative the first elongated member, wherein the lifting arrangement further comprises an engaging device for axially moving the second elongated member along the second axis relative the first elongated member.

A vehicle traveling from a first area to a second area includes a traveling mechanism having a plurality of wheels and a traveling function, and a control unit configured to cause the traveling mechanism to perform a wheel cleaning operation and then cause the vehicle to enter the second area.

A walking vehicle including a chassis and a plurality of wheel-leg components is described. The plurality of wheel-leg components are collectively operable to provide wheeled locomotion and walking locomotion.

A work vehicle includes a plurality of traveling devices for driving traveling, a plurality of articulated link mechanisms having at least two or more joints and supporting the plurality of traveling devices to a vehicle body, with allowing the plurality of traveling devices to be elevated/lowered independently of each other, a driving mechanism capable of changing respective postures of the plurality of articulated link mechanisms independently of each other, and a plurality of turning mechanisms configured to support the respective plurality of the articulated link mechanisms, with allowing the link mechanisms to be orientation-changeable about a vertical axis.