摘要:
A dual-rotor electric motor (1), having an outer rotor (3) and an inner rotor (4), drives a first drive axle (5) and a second drive axle (6), while also provides inter-axle speed differential function. One of the drive axles is also a steering axle. Torque and rotation are transmitted between the outer rotor and the first drive axle through a clutch (19) and a first drive shaft (20), and between the inner rotor and the second drive axle through a second drive shaft (22). A first brake (24) brakes the rotation of the outer rotor, and a second brake (25) brakes the rotation of the inner rotor. A fluid pressure source, including a pump (51) and an accumulator (59), provides fluid pressure, through a plurality of fluid lines, for operating the clutch and brakes. Electromagnetic control valves (60, 61, 62) control the operation of the clutch and brakes. An electronics (78) monitors and compares continuously the rotational speeds of the axles and controls the valves for engaging the clutch and releasing the first brake when a speed lower than a predetermined value is detected, whereby providing low-speed/four-wheel-drive mode, or disengaging the clutch and applying the first brake when a speed higher than a predetermined value is detected, whereby providing high-speed/two-wheel-drive mode, or applying the first brake or the second brake when a traction slip respectively of the first drive axle or of the second drive axle higher than a respective predetermined value is detected, whereby providing anti-slip traction control.
摘要:
A reaction containment drive apparatus for a power tool includes a motor having an outside case free to rotate within the tool casing, and an internal drive shaft. A planetary gear set is an integral portion of the drive. It has three parts, namely, a central sun gear part, a middle planet gear part (the planet gear part having a planet carrier and preferably three planet gears on the planet carrier), and an outside ring gear part coaxial with the sun gear part and the planet carrier. The planet gear part is rotatable between the sun gear part and the ring gear part. One part of the planetary gear set is fixedly connected to the drive shaft and rotatable as a unit therewith; one part of the planetary gear set (for example, the ring gear) is fixedly connected to the outside case of the motor and rotatable as a unit therewith; and the remaining part of the planetary gear set is fixedly connected to the output shaft of the tool and forces the output shaft to rotate as a unit therewith when power is supplied to the motor. The reaction containment drive contains reaction forces within itself and prevents such forces from being transmitted from the output shaft to the tool.
摘要:
A dynamo-electric machine of the so-called statorless type, with an inductor which in operation counterrotates to the associated rotor armature, has a commutator on a transverse face of that armature engaged by brushes in brush holders which are supported by the inductor for rotation therewith. Each brush is springurged in its holder toward the commutator, the holder being mounted with limited axial mobility on a base by means of generally radial elastic legs which on standstill are deflected away from the commutator base by the spring force but in operation are straightened out by the centrifugal force to exert a supplemental contact pressure upon the brush.
摘要:
An enhanced dual rotational electric motor/generator includes an armature that rotates about a central axis in one direction, a stator that rotates about the central axis in an opposite direction, an axle that extends along the central axis and is secured to the armature, an axle support, a rotational output alignment mechanism for converting the opposite rotations of the armature and stator into a common rotational output direction, and an electrical connection mechanism that supplies functioning electrical communication between the motor/generator and external electrical circuitry while operating the motor/generator.
摘要:
An enhanced dual rotational electric motor/generator includes an armature that rotates about a central axis in one direction, a stator that rotates about the central axis in an opposite direction, an axle that extends along the central axis and is secured to the armature, an axle support, a rotational output alignment mechanism for converting the opposite rotations of the armature and stator into a common rotational output direction, and an electrical connection mechanism that supplies functioning electrical communication between the motor/generator and external electrical circuitry while operating the motor/generator.
摘要:
An enhanced counter-rotating electric motor and an associate propulsion system for use with a water-vehicle includes a motor housing, a stator within the housing that rotates about a central axis in one direction, an armature within the stator that rotates about the central axis in an opposite direction from the stator, a first axle that is secured to the stator and extends out from the housing, a second axle that is secured to the armature and extends out from the housing, water-tight rotational seals about each of the two axles, a centrifugal-force-balancing electrical connection mechanism that supplies functioning electrical communication between the motor and external electrical circuitry while operating the motor, and a propeller secured to each said axle.
摘要:
There is provided a self torque-balancing differential mechanism (2), including two concentric counter-rotating wheels, rotatable about a central shaft (24), mutually reacting and balancing a torque of a motor drive (20) interacting with the wheels, the motor drive being concentrically or eccentrically attached to one of the wheels to power the wheel and an element coupled thereto. The motor drive has a rotor (12) connected with a second of the two wheels, to power the second wheel and the element coupled thereto. The motor drive is electrically fed via two slip-ring contactors (26, 28), and the central shaft has a carrier (22) for coupling another device thereto.
摘要:
A rotating field, synchronized electric generator or motor in which the magnetic field that the armature produces can rotate relative to the stator at a speed significantly different from that of the armature, under electronic or other control that obviates the need for a mechanical torque-carrying gearbox that can be used for a similar purpose in a synchronized generator or motor.