The present invention provides a clutch and a work machine having same. The clutch comprises an input member for receiving a driving force and rotating, an output member for outputting rotational motion, and at least one transmission member. The input member has at least one radially extending protrusion. The output member has at least one transmission engagement part. The transmission member is movable between a first position of engagement with the transmission engagement part and a second position of disengagement, being located in a path of rotation of the protrusion, and able to abut the protrusion and be driven to move to the first position. Displacement of the transmission member between the first position and second position has a radial component. According to the technical solution of the present invention, the function of automatically switching between transmission states according to the operating state of a prime mover can be achieved. The fact that displacement of the transmission member comprises a radial component helps to reduce the axial thickness of the clutch, so that the structure thereof is more compact.

The present invention provides a clutch and a work machine having same. The clutch comprises an input member for receiving a driving force and rotating, an output member for outputting rotational motion, and at least one transmission member. The input member has at least one radially extending protrusion. The output member has at least one transmission engagement part. The transmission member is movable between a first position of engagement with the transmission engagement part and a second position of disengagement, being located in a path of rotation of the protrusion, and able to abut the protrusion and be driven to move to the first position. Displacement of the transmission member between the first position and second position has a radial component. According to the technical solution of the present invention, the function of automatically switching between transmission states according to the operating state of a prime mover can be achieved. The fact that displacement of the transmission member comprises a radial component helps to reduce the axial thickness of the clutch, so that the structure thereof is more compact.

A walking mechanism for driving a machine body includes a walking wheel group having a plurality of walking wheels attached to the machine body, with two front and two rear wheels relative to a traveling direction. The machine body has two sides with a pair of one of the front wheels and a one of the rear wheels being respectively located on each of the sides and driven to rotate synchronously. Each walking wheel includes an auto tire casing with a tread outer side having a tread pattern distributed along a circumferential direction of the auto tire casing. The tread pattern is configured as a plurality of tread ribs with a respective tread groove formed between each adjacent pair of the tread ribs, the tread pattern radiating outward from an axial center of the walking wheel. A related robot and self-walking mower are also disclosed.

Described herein are self-propel accessories for walk behind/push-driven machines/devices comprising: drive assembly motor(s) operatively connected to at least one power supply; at least one drive assembly for imparting drive from the drive assembly motor(s) to at least one accessory wheel assembly that is operatively connected to an output shaft of the drive assembly motor(s) and one of an axle or a drive engagement surface of the at least one accessory wheel assembly having accessory ground engagement wheel(s) coupled to at least one end of the axle for rotation therewith; a controller for the drive assembly motor(s) having an actuator for engaging the drive assembly motor(s); and an attachment assembly for coupling the drive assembly motor(s), the at least one drive assembly and the at least one accessory wheel assembly to a housing of the push-driven machine or device in place of a wheel assembly/sub-assembly of the push-driven machine or device.

Described herein are self-propel accessories for walk behind/push-driven machines/devices comprising: drive assembly motor(s) operatively connected to at least one power supply; at least one drive assembly for imparting drive from the drive assembly motor(s) to at least one accessory wheel assembly that is operatively connected to an output shaft of the drive assembly motor(s) and one of an axle or a drive engagement surface of the at least one accessory wheel assembly having accessory ground engagement wheel(s) coupled to at least one end of the axle for rotation therewith; a controller for the drive assembly motor(s) having an actuator for engaging the drive assembly motor(s); and an attachment assembly for coupling the drive assembly motor(s), the at least one drive assembly and the at least one accessory wheel assembly to a housing of the push-driven machine or device in place of a wheel assembly/sub-assembly of the push-driven machine or device.

The invention relates to a gearbox (1) comprising: a gearbox body (1A) defining an enclosure (1B), an input shaft (2), an output shaft (3) and a mechanism (4) for transmitting the movement of the input shaft (2) to the output shaft (3), said mechanism (4) for transmitting movement comprising at least one clutch (5) and a clutch (5) control device, the clutch (5) comprising a driving element (6) and a driven element (7) mounted rotatably secured to the output shaft (3) and having its axial movement limited in at least one direction along the output shaft (3), and the clutch (5) control device comprising a member for controlling the movement of the driving element (6) and the driven element (7) towards one another to allow the clutch (5) to pass from the declutched position to the clutched position. The control member is formed by the gearbox body (1A) mounted to slide along the output shaft (3).

The invention relates to a gearbox (1) comprising: a gearbox body (1A) defining an enclosure (1B), an input shaft (2), an output shaft (3) and a mechanism (4) for transmitting the movement of the input shaft (2) to the output shaft (3), said mechanism (4) for transmitting movement comprising at least one clutch (5) and a clutch (5) control device, the clutch (5) comprising a driving element (6) and a driven element (7) mounted rotatably secured to the output shaft (3) and having its axial movement limited in at least one direction along the output shaft (3), and the clutch (5) control device comprising a member for controlling the movement of the driving element (6) and the driven element (7) towards one another to allow the clutch (5) to pass from the declutched position to the clutched position. The control member is formed by the gearbox body (1A) mounted to slide along the output shaft (3).

Outdoor power equipment includes a frame, a power head, a transmission, a pair of rear drive wheels, and a wheel height adjustment mechanism. The power head is coupled to the frame. The transmission is coupled to the frame and operatively coupled to the power head. The transmission includes a drive rotatable member configured to rotate about a first axis. The pair of rear drive wheels are coupled at respective ends of a rear drive axle so that the rear drive axle, and the pair of rear drive wheels coupled thereto, rotate about a second axis different than the first axis. The wheel height adjustment mechanism includes a first bell crank pivotally coupled to the frame about the first axis. A first end of the first bell crank is coupled to the rear drive axle.

Outdoor power equipment includes a frame, a power head, a transmission, a pair of rear drive wheels, and a wheel height adjustment mechanism. The power head is coupled to the frame. The transmission is coupled to the frame and operatively coupled to the power head. The transmission includes a drive rotatable member configured to rotate about a first axis. The pair of rear drive wheels are coupled at respective ends of a rear drive axle so that the rear drive axle, and the pair of rear drive wheels coupled thereto, rotate about a second axis different than the first axis. The wheel height adjustment mechanism includes a first bell crank pivotally coupled to the frame about the first axis. A first end of the first bell crank is coupled to the rear drive axle.

A lawn mower including a housing; a walking mechanism, supporting the housing and driving the housing to move, and including at least one drive wheel; at least one motor to drive the at least one drive wheel to rotate; and a control apparatus, preset with a first and a second torque threshold. And when the motor is switched from a stopped state to a running state, the control apparatus controls a difference between a maximum operating output torque of the motor and the first threshold to be within a predetermined range, when the motor is in the running state, the control apparatus controls an operating output torque of the at least one motor to at most increase to the second threshold, the first threshold is less than or equal to a maximum output torque of the motor, and the second threshold is less than the first threshold.