摘要:
A device for adjusting the stroke volume of a first piston engine (1), having a bent-axis design, and a second piston engine (2), having a bent-axis design, and a common component (4) by which the stroke volumes can be adjusted. A valve (12) is provided which, when a maximum pressure level in the working lines (3) is exceeded, the valve (12) is reversed such that the common component (4) reverses the stroke volumes toward a lower power consumption arrangement.
摘要:
A hydraulic transmission system features a first hydrostatic motor (1) and a second hydrostatic motor (4), which are connected to an output shaft (3) by way of a compound transmission, and which, in order to reach a minimum and a maximum rotation speed of the output shaft, are, on the one hand, adjustable with respect to their displacement volume by way of electric valves (9, 17) and, on the other hand, can be connected or, as the case may be, separated from a conveyor line (7) and a suction line (8) of a hydraulic pump.
摘要:
A device for adjusting the swept volume of a first piston machine (1), of transverse axis design, and a second piston machine (2), of transverse axis design. The device including a common component (4), via which the swept volumes can be adjusted, and a valve (12) which, when a maximum pressure level in the working lines (3) is exceeded, can be rerouted in such a way that the common component (4) reroutes the swept volume in a direction toward the lower power input.
摘要:
An arrangement for a hydraulic eccentric adjustment for setting a predetermined displacement volume in a hydrostatic motor and, in particular a radial piston motor (1). The arrangement has an adjustment device which, to position an eccentric element (2), can be acted upon with pressure medium via a shuttle valve (5) such that at least one actuating piston (19), of an adjustment cylinder (3) that can be acted upon on both opposed sides is provided, as the adjustment device. A first pressure chamber (7) of the cylinder is connected to a first supply line (9), for setting a smaller displacement volume while a second opposed pressure chamber (8) is connected to a second supply line (10), for setting a larger displacement volume. The two supply lines (9, 10) are connected to one another by a connecting line (11).
摘要:
A device (2) for a vehicle drivetrain (1) with a transmission unit (3) for changing various transmission ratios and with a hydraulic device (4) by which drive torque can be provided in the area of the drive output (5) of the vehicle drivetrain (1) and in whose area a drive output torque of the vehicle drivetrain (1) can be at least partially supported. A reversing gear system (6) is connected, upstream of the transmission unit (3), for reversing the rotation direction, and the hydraulic device (4) can be brought into active connection with the transmission unit (3), between the reversing gear system (6) and the transmission unit (3), in the area of the transmission input (15).
摘要:
A device for adjusting the swept volume of a first piston machine (1), of transverse axis design, and a second piston machine (2), of transverse axis design. The device including a common component (4), via which the swept volumes can be adjusted, and a valve (12) which, when a maximum pressure level in the working lines (3) is exceeded, can be rerouted in such a way that the common component (4) reroutes the swept volume in a direction toward the lower power input.
摘要:
A power split transmission for a working machine, such as a wheel loader, for example, has a hydrostatic and a mechanical power branch which are summed with one another via a summation gear (12). A reversing gear (7) is connected downstream of the summation gear (12) and a gear shifting mechanism (20) is connected downstream of the summation gear (12).
摘要:
A powershift reversing transmission (1) having a hydrodynamic torque converter and at least two clutches (17, 18) for shifting to the forward and reverse driving directions. The clutches are designed as negative clutches. A reservoir (33), from which pressurized medium flows through an aperture (37), is provided to modulate the pressure when reversing the transmission. A throttle (39), with a variable cross section, is provided for inching. A back pressure may be applied to the clutches (17 or 18) through the throttle (39). This reversing transmission is particularly useful for driving lift trucks or as an entry unit for a multi-speed reversing transmission.
摘要:
The vehicle drive system for mobile hydraulics has a hydrostatic power transmission and a multi-speed selector gear. When the gears are shifted, the speed of the hydrostatic variable displacement motor is controlled in such a way that synchronous engine speeds are set on the engaging elements. Thus, during upshifting, a directional valve is shifted into a neutral position and afterward shifted back into the basic position. For downshifting there is a synchronizing valve that replaces a control pressure, which is dependent on the speed of a primary drive motor with a constant maximum charge pressure. As a result, the engine speed of the hydrostatic variable displacement motor reaches, in the shortest time possible, the engine speed that matches the ratio range in the transmission. Following synchronization the gearshift system runs without detectable engagement jerks.
摘要:
A device (2) for a vehicle drivetrain (1) with a transmission unit (3) for changing various transmission ratios. The device (2) comprising a reversing gear system (4) arranged on an input side of the transmission for reversing the rotational direction. A hydrodynamic torque converter device (5) located upstream of the reversing gear system (4). A hydraulic device (6) which, in the power flow direction is located between the reversing gear system (4) and the transmission unit (3) and can be brought into active connection with them for producing a torque that can be applied in the area between the reversing gear system (4) and the transmission unit (3).