摘要:
In order to achieve a repair-friendly and maintenance-friendly arrangement with improved conduction away of heat to the outside in a wheel drive, in particular for mobile machines, having a carrying axle (2) which is mounted fixed in terms of rotation to the vehicle frame (1) and which is rotatably connected as a wheel hub to a ring gear (4) via a roller bearing arrangement (3a, 3b), the ring gear (4) being driven via at least one planetary gear mechanism (24) with drive-end sun wheel (16), and an integrated dynamic service brake (24) being provided between the ring gear (4) and the carrying axle (2), it is proposed that the service brake (24) be arranged within the ring gear (4) at the end directly behind a detachable gear mechanism cover (11) and at the outer radius on a hollow-cylinder-shaped brake carrier (10) which forms the end piece of the carrying axle (2) which is fixed in terms of rotation, and that the planetary gear mechanism (34) be arranged behind the service brake (24), viewed from the end, within the ring gear (4).
摘要:
To provide a motive-power transmission device for a vehicle including a torque converter, a gearbox, and a clutch for cutting off the transmission of motive power between the input shaft of the gearbox and the turbine of the torque converter. The gearbox is accommodated in the crankcase, and the motive-power transmission device is compact in the axial direction of the crankshaft. A motive-power transmission device for a vehicle includes the crankshaft and the input shaft of the gearbox journaled freely rotatably in the crankcase, their axes being parallel to each other; the torque converter is mounted on one end portion of the crankshaft; and the clutch is separated along the axial direction of the crankshaft from the torque converter and so mounted on one end portion of the input shaft that part of the clutch overlaps the torque converter as seen in the axial direction of the crankshaft.
摘要:
A vehicle driving device includes an engine installed in a vehicle, a fluid coupling actuated by the engine, and a friction clutch disposed between the fluid coupling and a transmission, the fluid coupling,having a lock-up clutch. Controlling means for controlling actuation of the lock-up clutch controls the lock-up clutch so as to be engaged during a gear change operation.
摘要:
A drive combination that is disclosed that is particularly suited for use in automobiles constructed to engage in acceleration racing. The drive combination includes a torque converter drive unit that is driven by an engine, and a countershaft transmission that that is driven by the torque converter drive unit. The disclosed drive combination requires less power to drive than known torque converter drive and planetary gear transmission drive combinations used for automobile racing and is lighter than such known drive combinations.
摘要:
An isolation assembly (26) for transferring torque between an engine (20) and a planetary transmission (30) includes both a radial spring assembly (56) and a viscous fluid damper (58). A damper plate (76) is rotationally coupled to the engine (20) and to the radial spring assembly (56). The damper plate (76) is also coupled to the viscous fluid damper (58). The torque output from the damper (58) and radial spring assembly (56) is then coupled to the input to the transmission (30).
摘要:
The present invention provides a transmission for vehicle with an HST interposed in a drive power transmission path that includes: a housing; a center section having a plate-like shape with a first surface and a second surface opposite to the first surface with respect to a drive power transmission direction, and the center section being disposed within the housing; an input shaft extending through the center section; an output shaft disposed parallel with the input shaft and away from the same in a plate surface direction of the center section; a hydraulic pump body supported on the first surface of the center section and operatively connected to the input shaft; a hydraulic motor body supported on the second surface of the center section and being adapted to drive the output shaft upon receiving operational fluid discharged from the hydraulic pump body; a bearing plate fixed within the housing, facing either one of the first and second surfaces of the center section for supporting the input shaft; and an auxiliary pump disposed on the bearing plate and being adapted to be driven through the input shaft.
摘要:
A transmission system including an automatic transmission having a plurality of speed change modes, including at least a continuously variable speed change node and a steeping speed change mode, and a sub-transmission connected to the automatic transmission. The sub-transmission is capable of switching to one of a plurality of running ranges including at least a forward range, a neutral range, and a reverse range. The transmission system also includes a mode switch for selectively switching to one of the plurality of speed change modes of the automatic transmission, and a shift switch for switching from one speed change stage to another speed change when the stepping speed change mode is active. Functionally of the shift switch and the mode switch are collectively integrated into a common switch, and the common switch is selectively used as the shift switch or the mode switch.
摘要:
A mechanical-hydrostatic transmission particularly for tools and vehicles suitable for gardening, such as lawn-mowers or the like, comprising a reduction unit, a clutch unit, an oil pump and a hydraulic motor which are integrated and contained within a single casing, the pump and the clutch unit being arranged coaxially on a first shaft which is connected externally, by means of a coupling, to motor means, the pump being hydraulically connected to the hydraulic motor and the hydraulic motor being in turn axially associated with a second shaft from which a power take-off extends. The casing contains kinematic connections for transmitting motion to the driving wheels.
摘要:
A drive train comprises an internal combustion engine, a clutchless gearbox, which can be shifted by means of an electronic control unit and by means of actuating devices, without a mechanical synchronizing device, and a hydrostatic gearbox with a hydraulic pump and a hydraulic motor, which are connected in a closed circuit. The rotational speed of the hydraulic motor being controllable in dependence on a control signal to the adjusting device of the hydraulic pump and/or to the adjusting device of the hydraulic motor. The control unit calculates the control signal by means of setpoint input via an accelerator pedal or as a function of the rotational drive speed of the internal combustion engine, with shifting of the transmission stages being possible by means of the actuating devices. The control unit controls the adjusting device of the hydraulic pump as well as the actuating devices for the gearbox for the electronic synchronization of the latter by means of a characteristic curve which represents the speed ratio of the hydraulic motor to the hydraulic pump in dependence on an actuating signal to the adjusting device of the hydraulic pump for a loadfree state of the gearbox. For this purpose, in the method of controlling the drive train, the control unit calculates a maximum achievable synchronous speed of the hydraulic motor by means of a characteristic curve which represents the speed ratio of the hydraulic motor to the hydraulic pump in dependence on an actuating signal to the adjusting device of the hydraulic pump and/or to the adjusting device of the hydraulic motor for a loadfree state of the gearbox.
摘要:
A hydrostatic transmission and gear transmission located in the same or separate housings structures, and mechanically drivingly connected together by a power transmission shaft. That housing structure surrounding the hydrostatic transmission defining a first internal volume containing the hydrostatic transmission components and providing a receptacle for the hydrostatic fluid. That housing structure surrounding the gear transmission defining a gear compartment sump. As one example, the housing structure surrounding the hydrostatic transmission may further define a second internal volume to operate as an overflow receiver for fluid transferred from the first internal volume. A duct operating in accordance with the siphon principle connects the internal volumes and where a pressure restriction valves ensures an above ambient pressure level in the volumes when the hydrostatic and gear transmission is operating. Alternatively, the gear compartment sump may act as the second internal volume.