TH27193B - Hydrostatic transmission - Google Patents

Abstract

DC60 (25/12/40) Hydrostatic transmission with hydraulic closed circuit including both the active part and the active part. where it is connected through a working pipe to a reversible hydraulic pump and is pressurized on both sides by external pressure source This hydraulic circuit will include the first continuous flushing and feeding cycle, where depending on the leakage of the hydraulic pump, and perhaps the second intermittent flushing circuit is isolated. leave The first circuit is connected to an external pressure source. This hydrostatic transmission also includes A tunable regulating device which is set through the hydraulic pump's adjustment valve. This regulating device, which may be arranged on the outside of the adjacent area of the transmission. Hydrostatic power will act between each other with the control device where it is sent directly to the hydrostatic transmission. It includes a servo valve shaped valve where, for this arrangement, the servo valve can be switched to be manually controlled. Manually operated valve locks are arranged between Servo valves and hydraulic pump adjustments The flow control valve will be used for the effect of The resulting pressure is adjustable as is the lockable one. and the working tube is assembled with the actuator. for the actual pressure Hirostatic transmission with a hydraulic closed circuit that includes both an active part which is connected through a working pipe to a reversible hydraulic pump and The pressure on both sides is given by an external pressure source. This hydraulic circuit combines the first continuous rinsing and feeding cycle. where, depending on the leakage of the hydraulic pump, and perhaps the second intermittent purge cycle is separated from the first and is connected to an external pressure source. The hydrostatic transmission also includes an adjustable regulating device that is set via the hydraulic pump's adjustment valve. This control device Where, which may be arranged outside of the adjacent region, the hydrostatic transmission is performed between them and the control device. where it is sent directly to the hydrostatic transmission. and will include a servo valve shaped valve, where for this arrangement customization The servo valve can be switched for manual control. Manually operated valve lockouts are arranged between servo valves and hydraulic pump adjustments. The flow control valve will be used for the pressure effect to be adjusted as well as the lockable. and the working pipe is assembled with the actuator for the actual pressure value.

Claims (10)

1. Hydrostatic power transmission, consisting of a closed hydraulic circuit including a dual-sided working section, a reversible hydraulic pump and working pipes connecting the reversible hydraulic pump to the working section, an external pressure source for pressurizing the working section on both sides. This hydraulic circuit consists of a continuous purge and a feed circuit in relation to hydraulic pump leakage, an adjustable control device consisting of valves for adjusting the hydraulic pump, which also includes a control device directly responsible for the hydrostatic power transmission and its interaction with the control device. The control device consists of a servo-type valve, which includes a pathway for switching the servo valve to manual control, a manually operated lock valve connected between the servo valve and the hydraulic pump adjustment, which also includes adjustable and shut-off flow control links for pressure generation, where the working pipes contain pressure gauges for the actual pressure value. 2. The hydrostatic power transmission under claim 1 also includes a second, continuous flushing circuit separate from the first and connected to an external pressure source. 3. Hydrostatic transmission as per claim 1, where the control device is mounted externally in close proximity to the hydrostatic transmission. 4. Hydrostatic transmission according to claim 1, comprising adjustment sections for servo valve and flow control and for manual locking of valves, where the pressure actuator of the pressure sensor includes a display device, and where this adjustment section and display device are integrated into the control unit. 5. Hydrostatic power transmission pursuant to claim 4, whereby the control device shall also include the provision of display and evaluation of the output configuration of the actuator, the distance of the sensor, the minimum distance of the actuator and servo valves; for the output configuration of the actuator, the temperature of the temperature sensor, for the determination of the medium temperature pressure and for the output configuration of the actuator determining the current consumption of the hydraulic pump drive motor; and for the display and/or evaluation of various values determined by the sensors. 6. Hydrostatic power transmission under claim 1, where the control device is shaped for receiving the input values, for comparing the output values to the desired values set for the various actuators, and for switching the hydrostatic power transmission when at least one of the desired values exceeds 7. Hydrostatic power transmission under claim 6, where the monitoring device comprises a path for switching the hydrostatic power transmission off with a time delay device, where the delay period is adjustable depending on the level of the value greater than the specified value. 8. A method for zeroing the hydraulic pump of a hydrostatic power transmission system, including a closed hydraulic circuit with a two-sided working section, a reversible hydraulic pump, and working pipes connecting the reversible hydraulic pump to the working section; an external pressure source for pressurizing the working section on both sides; a hydraulic circuit consisting of a continuous flushing and feeding circuit in relation to hydraulic pump leakage; an adjustable control device consisting of valves for determining the hydraulic pump adjustment; and a control device directly responsible for the hydrostatic power transmission and its interaction with the control device. The control device consists of a servo-type valve, which includes a path for switching the servo valve to manual control; a manually operated locking valve connected between the servo valve and the hydraulic pump adjustment; and an adjustable and lockable flow control valve for generating pressure, where the working pipes have a real pressure actuator. This method involves manually locking the flow-control valve, manually adjusting the servo valve until the actuator pressure and working pipe pressure are equal, and setting the hydraulic pump adjustment angle to match the conveying volume to zero. 9. The procedure under claim 8 for the timing of the pressure-induced action of the working section shall consist of: when the conveying volume is set to zero and the hydraulic pump is locked for the adjustment process, a moderate pressure is applied to the control valve resulting in the initial pressure-induced action, and the achievable adjustment of the control valve which ensures equal pressure distribution of the working section pressure actuator. 10. The procedure under claim 4 shall consist of manually adjusting the servo valve until at least the estimated conveyance of the hydraulic pump reaches zero, until the equivalent pressure of the actuator's actual pressure of the working pipe reaches that value, and until the recorded angle of the actuator's actual angle of the pump adjustment cylinder corresponds to the conveyance zero, recording the manually adjusted position of the servo valve and transmitting the zero-adjustment position to the control device.