A wheel having a hub and a circular ring is provided. The circular ring has a central axis, an outer surface having a first outer edge and a second outer edge, and a plurality of holes disposed on the outer surface. Additionally, the wheel has a plurality of spokes each being adapted to attach to both the hub and the circular ring, and each of the plurality of spokes being concaved and arranged in an alternating pattern. A plurality of lugs is disposed on the outer surface of the circular ring, and each of plurality of lugs has a first leg and a second leg, each extending from a center rib and a lug plate adapted to connect the first leg to the center rib.

A traction aid for a motor vehicle, comprising an elongated main body having a top and a bottom surfaces, the elongated main body having thereon a series of teeth and a sliding mechanism, a first securing member located at an end of the main body and projecting downwardly and a second securing member located at the bottom surface of the main body and attached to the sliding mechanism. The sliding mechanism allows movement of the second securing member towards or away from the first securing member along the bottom surface of the main body. The traction aid further comprises a securing mechanism configured to move the sliding mechanism and the second securing member towards the first securing member in order to squeeze a tire of the motor vehicle between the first and second securing members.

A traction aid for a motor vehicle, comprising an elongated main body having a top and a bottom surfaces, the elongated main body having thereon a series of teeth and a sliding mechanism, a first securing member located at an end of the main body and projecting downwardly and a second securing member located at the bottom surface of the main body and attached to the sliding mechanism. The sliding mechanism allows movement of the second securing member towards or away from the first securing member along the bottom surface of the main body. The traction aid further comprises a securing mechanism configured to move the sliding mechanism and the second securing member towards the first securing member in order to squeeze a tire of the motor vehicle between the first and second securing members.

A wheel includes a circular wheel main body and at least one grouser. The at least one grouser is provided along an outer circumference of the wheel main body and has a contact surface capable of drawing a first tangent line. The first tangent line is inclined opposite to a rotational direction of the wheel main body from the center line of the wheel main body.

Disclosed is an escape device for self-rescue in the case of an auto tyre being trapped in a pit, comprising a central positioning device, at least one tyre claw and a jacking device. The central positioning device is positioned and mounted at a central position of spokes of a tyre. The tyre claw and the central positioning device are fitted to each other and are clamped onto the tyre. The jacking device and the tyre claw are fitted to each other. The jacking device is further provided with a jacking head in contact with the pit ground. The jacking head protrudes out of an external rim of the tyre. The escape device can carry out effective rescue for trapped tyres, is convenient and fast to assemble and disassemble, saves time and energy, improves driving safety, and reduces the occurrence of accidents.

Disclosed is an escape device for self-rescue in the case of an auto tyre being trapped in a pit, comprising a central positioning device, at least one tyre claw and a jacking device. The central positioning device is positioned and mounted at a central position of spokes of a tyre. The tyre claw and the central positioning device are fitted to each other and are clamped onto the tyre. The jacking device and the tyre claw are fitted to each other. The jacking device is further provided with a jacking head in contact with the pit ground. The jacking head protrudes out of an external rim of the tyre. The escape device can carry out effective rescue for trapped tyres, is convenient and fast to assemble and disassemble, saves time and energy, improves driving safety, and reduces the occurrence of accidents.

Disclosed is a portable escape device for self-rescue in the case of an auto tyre being trapped in a pit, comprising support posts, a clamping device fitted to the support posts, and a jacking device fitted to the clamping device. The support posts are fixedly mounted onto spokes. The clamping device clamps an auto tyre. The jacking device protrudes and extends out of a top face of a tyre portion. The portable escape device for self-rescue in the case of an auto tyre being trapped in a pit can release the trapped auto tyre and perform self-rescue fast and reliably, and is convenient to carry.

The present invention provides an embedded-outer rotor motor direct driven mower driving wheel and a mower. The embedded-outer rotor motor direct driven mower driving wheel comprises a driving wheel main body formed by the assembling of a wheel side cover I, a wheel side cover II, and a wheel body sandwiched between the wheel side cover I and the wheel side cover II, the wheel side cover I, the wheel side cover II and the wheel body are enclosed to define a cavity, an outer rotor motor is mounted in the cavity, an outer rotor portion of the outer rotor motor is fixedly arranged relative to the driving wheel main body, an internal stator portion of the outer rotor motor is provided with a fixed shaft penetrating through the wheel side cover I and extending out of the driving wheel main body, and the wheel side cover I is provided with a shaft hole I allowing the fixed shaft to penetrate through. The present invention arranges the outer rotor motor inside the driving wheel and directly drives the mower driving wheel through the outer rotor motor, thus, transmission precision and reliability are good, and the inner space of the mower is more reasonable.

A traction aid apparatus for a motor vehicle wheel. The apparatus has an elongated main body; a first securing member located at the first end or near the first end of the elongated main body and projecting downwardly comprising a surface for engaging a first side wall of the motor vehicle tire; a second securing member projecting from the elongated main body comprising a surface for engaging a second side wall of the motor vehicle tire opposite the first side wall of the motor vehicle tire, a tension mechanism connected to the elongated main body or the second securing member; and a flexible wheel engaging member that is configured to pass through an aperture in the motor vehicle wheel to the tension mechanism to secure the traction aid apparatus to the motor vehicle wheel.

A traction aid apparatus for a motor vehicle wheel. The apparatus has an elongated main body; a first securing member located at the first end or near the first end of the elongated main body and projecting downwardly comprising a surface for engaging a first side wall of the motor vehicle tire; a second securing member projecting from the elongated main body comprising a surface for engaging a second side wall of the motor vehicle tire opposite the first side wall of the motor vehicle tire, a tension mechanism connected to the elongated main body or the second securing member; and a flexible wheel engaging member that is configured to pass through an aperture in the motor vehicle wheel to the tension mechanism to secure the traction aid apparatus to the motor vehicle wheel.