Abstract:
One vehicle clutch (6) is situated in a vehicle between a prime mover (2) and a transmission (4) and is controlled according to the rotational speed of the prime mover (2). As centrifugal clutch, the vehicle clutch (6) has elements (26, 32) which cause a variable torque transmission according to the rotational speed of the prime mover (2). The vehicle clutch (6) is actuatable without an externally actuated actuator, is the only clutch located between prime mover (2) and transmission (4) and is provided as starting clutch without possibility of interruption of traction during shifting operations.
Abstract:
A device for encapsulating fine clutch dust is proposed which comprises caverns (5) provided in the clutch housing (4) for collecting fine dust by the rotation-related centrifugal force. During servicing of the clutch, the fine dust received in the caverns (5) can be removed.
Abstract:
A gearshift device for electrically controlled transmissions is provided having a shifting lever pivotable in two parallel planes and guided in slides which have a connecting link only in the area of a neutral shifting position. Such gearshift devices are used particularly in construction machines. By way of a lock, which is activated below an admissible speed, a shift to the neutral position and into the opposite direction of travel is prevented. At higher speeds, accidental faulty shifts are prevented by a step-by-step gearshift mechanism. The locks, according to the invention, require only few regulation measures since they contain two mutually independent locking systems.
Abstract:
A shaft-gear connection comprises a shaft and a shrunk-on gear that has an axial first section, attached by a first shrink-fit bond, and an axial second section, attached by a second shrink-fit bond. The second shrink-fit bond is greater than the first shrink-fit bond so that a greater maximum torque to be transmitted from the gear to the shaft by the second shrink-fit bond than by the first shrink-fit bond. An axial intermediate section, attached by a third shrink-fit bond, is located between the axial first section and the axial second section. Both a surface pressure and a maximum torque that can be transmitted by the third shrink-fit bond are greater than the surface pressure and the maximum torque that can be transmitted by the first shrink-fit bond, but are less than the surface pressure and the maximum torque that can be transmitted by the second shrink-fit bond.
Abstract:
In a pressure-control device for affecting the closing behavior of powershift clutches (K.sub.1 -K.sub.X) in a powershift transmission, a regulating valve (1) cooperates with a damping device (2) as pressure-control valve. Chokes (4, 40, 400) for a more or less smooth connection are arranged in combination with pressure lines (P.sub.S, P.sub.R) over the pressure cycle when the clutch concerned (K.sub.1 -K.sub.X) is engaged. The travel of the damper piston (21) in a direction toward the regulating valve (1) is shortened by a pressurizing piston device (3) cooperating with the piston (21) of the damping device (2). Thus the time for the slipping phase in the engaged clutch concerned is shortened and, together with a higher initial pressure after the clutch is filled, the friction is limited.The limitation of the friction can also be obtained by adding a second choke in parallel in the control pressure line (Pr) by which the choked cross section is increased.
Abstract:
A shaft-gear connection comprises a shaft and a shrunk-on gear that has an axial first section, attached by a first shrink-fit bond, and an axial second section, attached by a second shrink-fit bond. The second shrink-fit bond is greater than the first shrink-fit bond so that a greater maximum torque to be transmitted from the gear to the shaft by the second shrink-fit bond than by the first shrink-fit bond. An axial intermediate section, attached by a third shrink-fit bond, is located between the axial first section and the axial second section. Both a surface pressure and a maximum torque that can be transmitted by the third shrink-fit bond are greater than the surface pressure and the maximum torque that can be transmitted by the first shrink-fit bond, but are less than the surface pressure and the maximum torque that can be transmitted by the second shrink-fit bond.
Abstract:
A shaft-gear connection and method for producing the connection which includes a shaft (2) and a shrunk-on gear (4). The gear (4) has a first axial section (5) attached to the shaft (2) by a first shrink-fit (8) and a second axial section (6) attached to the shaft (2) by a second shrink-fit (9). The second shrink-fit (9) allows greater torques to be transmitted from the gear (4) to the shaft (2) than the first shrink-fit (8). An intermediate axial section (7) of the gear (4), attached to the shaft (2) by a third shrink-fit (10), is located between the first and second axial sections (5, 6). The torque transmitted from the gear (4) to the shaft (2) by the third shrink-fit (10) is greater than the first shrink-fit (8) but smaller than the second shrink-fit (9). The connection allows greater torque to be transmitted without increasing the risk of damaging the external gearing.
Abstract:
The invention concerns an automated transmission, for example a multi-stage motor-vehicle shift transmission, with at least one controllable actuating drive provided as a gear actuator (26) to engage and disengage a gear of the transmission or as a clutch actuator (7) to engage and disengage an associated automated engine clutch, and an automated friction clutch, for example an automated engine clutch arranged in the drivetrain of a motor vehicle between a drive engine and a transmission, with a controllable actuating drive provided as the clutch actuator (7) for engaging and disengaging the friction clutch.To improve the controllability and achieve a longer service life while reducing production costs, it is proposed to use as the actuating drive (7, 26) a pneumatic muscle (8, 8.1, 8.2) with a hose body (9) made of a fluidically impermeable and elastic material with a lattice network (10) of tension-resistant fibers arranged in the outer area on the hose body (9), and with end pieces (11a, 11b) that close off the hose body (9) axially at its ends.
Abstract:
A method for the control of an actuator of a starting clutch of a motor vehicle. The actuator is so regulated by a control apparatus that the starting clutch is closed upon the presence of a desire for starting, as well as closed by an adjusted, transmission ratio, and the clutch is opened upon the termination of the starting procedure. For the freeing of a vehicle from a roadway obstruction by way of a rocking process of the vehicle, it is proposed that the starting clutch, during a starting procedure and by way of control of the actuation actuator, is operated in a fully automatic manner in such a way, that the torque (M_K) periodically varies.
Abstract:
An apparatus for debarking logs has a plurality of longitudinally spaced frames each of which carries a pair of horizontally and transversely spaced upper wheels and at least one lower wheel below and between the upper wheels. At least one conveyor element is spanned over the wheels in each frame and has a pair of inner stretches defining a V in line with the inner stretches of the other frame and forming therewith a log-receiving cradle. At least one of the wheels, preferably the lower wheel is driven, and it is possible either to tip the frames so as to unload the logs or to cant them about vertical axes relative to the longitudinal direction of the logs so as to move the log along the apparatus.