Abstract:
A torsional vibration damper is used for reducing or eliminating torsional vibrations in a vehicle driveline. A hub portion includes an elongated body with a first axial dimension. A disk portion is supported by the hub portion and has a second axial dimension that is smaller than the first axial dimension of the hub portion. The hub portion preferably is secured to rotate with an engine flywheel and the disk portion preferably is adapted to rotate with a transmission input shaft. The disk portion preferably supports a plurality of damping members, which can be positioned at different radial or axial locations depending on the needs of a particular situation.
Abstract:
An annular disk for flexible shaft couplings is described, whose two coupling halves each exhibiting a connection flange are connected to each other via a packet of such annular disks in a torsionally rigid manner, but in such a way as to enable their axial and angular movement. The annular disk has four attachment holes uniformly distributed on a shared hole circle, wherein the section is tapered between two adjacent attachment holes. The annular disk according to the invention satisfies the following size ratios: Dt/D1null10 to 12, D2/Dtnull1.1 to 1.2, Dt/B1null9 to 16, and B2/Dtnull0.88 to 0.93, wherein Dt is the diameter of the hole circle, D1 is the diameter of the respective attachment hole, D2 is the largest outside diameter of the annular disk, B1 is the width of the narrowest part of the annular disk section between two consecutive attachment holes, and B2 is the width of the annular disk outer contour. The annular disk according to the invention makes it possible to offset relatively large dislocations.
Abstract:
Apparatus for damping vibrations between the output element of the engine and the power train in a motor vehicle has flywheels which are rotatable relative to each other. One flywheel is mounted on the output element of the engine and another flywheel is connectable to the power train by a friction clutch. vibration dampers are installed between the flywheels, and such dampers are confined in a housing which is provided on the one flywheel and contains a supply of viscous fluid medium for the parts of the dampers. The housing is the input member of the dampers and the output member of the dampers is a flange which extends into the housing and is axially movably coupled to the other flywheel.
Abstract:
A power transmission system wherein drive power is transmitted from a drive source to an auger transmission for rotating an auger, and a snow blower is provided. An overload protecting mechanism is located between the snow blower and the auger transmission, thereby absorbing overload to be exerted on a power delivery path between the drive shaft and the auger transmission. Thus, snow-removing operation is not interrupted even when the power delivery path encounters overload. The overload protecting mechanism may comprise, for example, either a friction coupling employing a plurality of friction plates or a rubber coupling employing cushion rubbers. The overload protecting mechanism is located in a large space between the auger transmission and the snow blower, allowing existing space to be effectively utilized.
Abstract:
A constant-velocity universal joint of a tripod type, includes a housing representing a first rotation part and having three tracks, each track having two flat running surfaces in parallel relationship, a second rotation part configured as a tripod spider and having three arms defined by arm axes arranged in a plane and intersecting in a joint axis. The arms are guided in the running surfaces of the housing, wherein each of the arms is received in a rolling-contact bearing including an inner ring, an outer ring, cylindrical rolling elements, and retainer rings arranged as mirror images of one another for mutual axial securement of all components of the rolling-contact bearing with respect to the arm axis. The outer ring includes inner collars which are arranged as mirror images of one another, each inner collar configured with two radial steps to define an axially inner collar segment and an axially outer collar segment, with the rolling elements guided on the inner collar segment and with the retainer rings guided on the outer collar segment.
Abstract:
The invention concerns a filtering device for filtering vibrations transmitted by a rotating engine component (11) adapted to drive in rotation an output shaft (19), which device comprises a drive shaft damper (20) tuned at a frequency substantially locked within a range of frequencies to be damped: electromagnetic modulating means (23) are designed to adapt the frequency of the damper (20) to the frequency of the vibrations transmitted by the rotary component (11). The invention also concerns a transmission for motor vehicle comprising a drive shaft (11), linked to a rotary component formed by the motor vehicle engine crankshaft, an output shaft (19) linked to the drive shaft releasable via a clutch, a gearbox (50), said output shaft (19) being the input shaft of the gearbox (50), a filtering device of the inventive type being provided for filtering vibrations emitted, hence transmitted, by the rotary component.
Abstract:
A coupling assembly for agricultural implements has a friction coupling (1), an electromagnet (6) and control mechanism (7). The friction coupling (1) includes a friction assembly (4) which is loaded by a pressure plate (14). The pressure plate (14) is loaded by pressure springs (15, 16). The pressure plate (14) is adjustable by an actuating device (5) which includes an electromagnet (6) and an anchor plate (19). The control mechanism (7) includes a control member (27) which, by changing the electric current, regulates the pressure force of the pressure plate (14) during the coupling and/or uncoupling operation. The housing (2) and the hub (3) are associated with speed sensors (25, 26) which transmit a signal to the control mechanism (7) to relieve the load on the friction assembly. Thus, this prevents the friction coupling (1) from overheating.
Abstract:
An active mount is provided for use in a rotary wing aircraft between each of the gearbox and airframe mounting locations for mechanically suspending the airframe from the gearbox. The active mount comprises first and second linear hydraulic actuators each having a principal axis. The length of the actuators is variable along the principal axis for providing relative movement between the airframe and the gearbox. The principal axes of the actuators are adapted to lie in the directional planes of the primary forces necessary for supporting the airframe and acting on the transmission gearbox mounting locations for providing movement of the gearbox relative to the airframe in the planes at a frequency for reducing the transfer of vibration through the active mount to the airframe. A system for reducing vibration in the rotary wing aircraft further comprises a hydraulic system for supplying a controlled flow of pressurized hydraulic fluid to the actuators.