A working vehicle of this invention includes a main speed change structure that includes a continuously variable speed change structure such as an HMT structure and a multi-speed speed change structure capable of switching between a first power transmission state with a first gear ratio and a second power transmission state with a second gear ratio providing a higher speed than the first gear ratio. A control device causes the continuously variable speed change structure to be accelerated to a forward travel side in accordance with an accelerating operation of a speed change operation member in a forward travel direction, and causes the multi-speed speed change structure to be changed from a first power transmission state to a second power transmission state when the rotational speed of the speed change output shaft reaches a switching speed set to exceed a work speed range.

A working vehicle of this invention includes a main speed change structure that includes a continuously variable speed change structure such as an HMT structure and a multi-speed speed change structure capable of switching between a first power transmission state with a first gear ratio and a second power transmission state with a second gear ratio providing a higher speed than the first gear ratio. A control device causes the continuously variable speed change structure to be accelerated to a forward travel side in accordance with an accelerating operation of a speed change operation member in a forward travel direction, and causes the multi-speed speed change structure to be changed from a first power transmission state to a second power transmission state when the rotational speed of the speed change output shaft reaches a switching speed set to exceed a work speed range.

A clutch mechanism includes a control member. The control member is adapted to receive motive power and includes a first dry clutch member and a first viscous clutch member. The clutch mechanism further includes an output member that includes a second dry clutch member and a second viscous clutch member. The first and second dry clutch members form a dry clutch and the first and second viscous clutch members form a viscous clutch. The clutch mechanism further includes an actuation arm coupled to at least one of the control and output members. The actuation arm is selectively controllable to effect relative movement of the control and output members such that one of the dry and viscous clutches is selectively engaged.

A clutch mechanism includes a control member. The control member is adapted to receive motive power and includes a first dry clutch member and a first viscous clutch member. The clutch mechanism further includes an output member that includes a second dry clutch member and a second viscous clutch member. The first and second dry clutch members form a dry clutch and the first and second viscous clutch members form a viscous clutch. The clutch mechanism further includes an actuation arm coupled to at least one of the control and output members. The actuation arm is selectively controllable to effect relative movement of the control and output members such that one of the dry and viscous clutches is selectively engaged.

A dual clutch that includes a first clutch, a second clutch, a ball ramp assembly and at least one actuator is provided. The first clutch engages and disengages a first set of gears. The second clutch engages and disengages a second set of gears. The at least one ball ramp assembly includes at least one ball, first member and a second member. The first member includes a ball pocket for each ball. The second member has at least one ball ramp. The at least one ball partially received in an associated ball pocket of the first member and ball ramp of the second member. The at least one actuator is configured and arranged to rotate one of the first member and the second member to cause the at least one ball ramp assembly to activate at least one of the first clutch and the second clutch.

A dual clutch that includes a first clutch, a second clutch, a ball ramp assembly and at least one actuator is provided. The first clutch engages and disengages a first set of gears. The second clutch engages and disengages a second set of gears. The at least one ball ramp assembly includes at least one ball, first member and a second member. The first member includes a ball pocket for each ball. The second member has at least one ball ramp. The at least one ball partially received in an associated ball pocket of the first member and ball ramp of the second member. The at least one actuator is configured and arranged to rotate one of the first member and the second member to cause the at least one ball ramp assembly to activate at least one of the first clutch and the second clutch.

The invention relates to a method for assembling a clutch control unit (30; 30a; 50; 50a) in a transmission clutch housing (24; 31) of a vehicle, the method comprising the steps of coupling the clutch control unit (30; 30a; 50; 50a) to the transmission clutch housing (24; 31) by a first guide means (33) comprising a first pin (34; 34a; 54; 54a) and a first slot (35; 35a; 55; 55a); coupling the clutch control unit (30; 30a; 50; 50a) to the transmission clutch housing (24; 31) by a second guide means (36) comprising a second pin (37; 37a; 57; 57a) and a second slot (38; 38a; 58; 58a); and displacing the clutch control unit (30; 30a; 50; 50a) from a first position at least partially outside the transmission clutch housing (24; 31) to an operative second position within the transmission clutch housing (24; 31); wherein the clutch control unit (30; 30a; 50; 50a) is guided by the first and second guide means (33; 36) along a predetermined path during the displacement between the first position and the second position.

An unmanned aerial vehicle (UAV) has a flight-only mode with a motor only rotating propellers and not rotating on-board wheels to configure the UAV to fly away from a surface of a structure, and a crawling-only mode in which the UAV is configured to crawl on the surface due to the motor only rotating the wheels while not rotating the propellers. In the flight-only mode, a clutch disengages a motor from the wheels so that the motor only engages the propellers to fly to lift from the surface. In the crawling-only mode, the clutch disengages the motor from the propellers so that the motor only engages the wheels to move the UAV on the surface.

An unmanned aerial vehicle (UAV) has a flight-only mode with a motor only rotating propellers and not rotating on-board wheels to configure the UAV to fly away from a surface of a structure, and a crawling-only mode in which the UAV is configured to crawl on the surface due to the motor only rotating the wheels while not rotating the propellers. In the flight-only mode, a clutch disengages a motor from the wheels so that the motor only engages the propellers to fly to lift from the surface. In the crawling-only mode, the clutch disengages the motor from the propellers so that the motor only engages the wheels to move the UAV on the surface.

A vehicle control device includes control means for executing coasting control, in which a friction engaging element is disengaged and a rotation speed of a rotary shaft of a drive source is set at zero, when a shift range corresponds to a travel range and a coasting condition is established, and the control means executes the coasting control when the shift range is modified to a neutral range.