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.

Vehicles including a power system incorporating dual drive shafts. An exemplary power system may include an engine having a vertically-oriented crankshaft that extends outwardly both below the engine (lower drive shaft) and above the engine (upper drive shaft). The lower drive shaft may power an implement of the vehicle via an implement drive system, while the upper drive shaft may power drive wheels of the vehicle via a traction drive system. In another embodiment, the second drive shaft may be formed by a jackshaft adjacent the engine.

An intermittent drive system includes a rotatable output component, a rotating input component with a driving engagement element, a synchronizing ring and a decoupling ring. The synchronizing ring is coupled to the output element to rotate therewith. The synchronizing ring has a driven engagement element configured to selectively engage with the driving engagement element. The synchronizing ring has an alignment feature configured to rotationally align the driving engagement element with the driven engagement element and has a decoupling feature configured to selectively disengage the driving engagement element from the driven engagement element. The decoupling ring is selectively coupled to the input component and has a decoupling feature configured to selectively engage the decoupling feature of the synchronizing ring. The driving engagement element engages the driven engagement element only when both the alignment feature is rotationally oriented to align the driving engagement element with the driven engagement element and the decoupling features are rotationally oriented to allow the driving engagement element to engage the driven engagement element.

The present invention discloses a spring clutch comprising a coil assembly, a rotor assembly and a pulley assembly. The coil assembly comprises a coil housing, an encapsulated coil and a shell, the encapsulated coil is in the coil housing. The rotor assembly comprises a shaft, a rotor and a sleeve, the sleeve is on the shaft, the shaft is in the rotor, the shaft is in the coil housing. The pulley assembly comprises an armature, leaf springs, a brake plate and a pulley, one side of the leaf spring is pressed with armature and the another side is pressed with pulley, the brake plate is outside of the armature and covered some area of the armature, the pulley is on the sleeve. The brake plate has magnet pieces inside. A spring clutch in accordance with the present invention the brake plate has magnet pieces inside to make the armature has magnetic force to catch up with the brake plate to enable the clutch has strong friction force to reduce the stop time.

An improved electromagnetic clutch for use in a riding lawnmower or similar vehicle is provided. The clutch comprises a coil assembly, a rotor assembly and a pulley assembly. The coil assembly comprises a shell, an encapsulated coil and a coil ring, the coil ring is pressed in the encapsulated coil, the encapsulated coil is inside of the shell, the extended piece of the shell has magnets and brake pieces. The rotor assembly comprises a rotor and a shaft, the shaft pressed in the rotor and is on the coil ring. The pulley assembly comprises a pulley, an armature and leaf springs, one side of the leaf spring is pressed on armature and the another side is pressed on pulley, the pulley is on the shaft, the location of the armature is between brake pieces and rotor. The encapsulated coil has thermal fuse inside and the thermal fuse electrical connected with coil wires, the electricity will be cut off when the temperature of encapsulated coil higher than the melting point of the thermal fuse caused by fitting incorrect or slipping happened during clutch working to protect lawnmower parts or avoid fire accident.

A snow blower includes a body; and an operation assembly connected to the body. The body includes a snow throwing system, and the snow throwing system includes: a snow throwing member; a deflector connected to the snow throwing member and disposed on the snow throwing member; a first motor configured to drive the snow throwing member to rotate relative to the body about a first axis; and a second motor configured to drive the deflector to rotate relative to the snow throwing member about a second axis. When the snow throwing member is at an intermediate position, the first motor and the second motor are each in a first circular region which uses a point on the second axis as a center, and the radius of the first circular region is less than or equal to 800 mm.

A method for operating an agricultural vehicle, the method including: generating an overdrive torque at a drive wheel motor of at least one ground drive system; transmitting the overdrive torque to the engine via a hydraulic ground drive circuit and a ground drive pump, to thereby bias the engine to operate at an increased rotation speed; measuring an engine rotation speed; comparing the engine rotation speed to a threshold value; and upon determining that the engine rotation speed satisfies the threshold value, operating the auxiliary hydraulic component of an auxiliary hydraulic system to generate a braking torque at a respective auxiliary pump, and transmitting each the braking torque to the engine to bias the engine to operate at a decreased rotation speed. An agricultural vehicle having a control system to perform the method is also provided.

A method for operating an agricultural vehicle, the method including: generating an overdrive torque at a drive wheel motor of at least one ground drive system; transmitting the overdrive torque to the engine via a hydraulic ground drive circuit and a ground drive pump, to thereby bias the engine to operate at an increased rotation speed; measuring an engine rotation speed; comparing the engine rotation speed to a threshold value; and upon determining that the engine rotation speed satisfies the threshold value, operating the auxiliary hydraulic component of an auxiliary hydraulic system to generate a braking torque at a respective auxiliary pump, and transmitting each the braking torque to the engine to bias the engine to operate at a decreased rotation speed. An agricultural vehicle having a control system to perform the method is also provided.

The power equipment such as a lawn mower (10) comprises an internal combustion engine (100) having a plurality of cylinders, an engine control unit (110) for selectively deactivating at least one of the cylinders, a work implement such as a cutting blade (70) connected to the engine in a power transmitting relationship, a clutch (80) provided in a power transmission path between the engine and the work implement, and a central control unit (50) for controlling an operation of a propelling device, the clutch and the engine control unit. The central control unit is configured to start the engine with two or more of the cylinders activated, to cause the engine control unit to operate the engine at a prescribed rotational speed, and to cause the engine control unit to deactivate at least one of the cylinders when the engine has reached a stable state at the prescribed rotational speed.