摘要:
The invention relates to an electromotive drive, especially for the pump of a power-assisted steering system of a motor vehicle. Said drive comprises a housing (3) with a bearing journal (15) in which the shaft (18) of a rotor (9) is rotationally mounted. The drive also comprises a stator (7) with drive windings. The bearing journal (15) extends through said stator and supports it. The stator (7) is supported by the bearing journal (15) substantially only in the transversal direction. The stator (7) is coupled with the remaining housing (3) in a rotationally fixed manner so as to transmit the engine torque. The inventive design provides a means for dramatically reducing disturbing noises which especially occur when the motor is operated at full load and which are caused by relatively high-frequency torque variations.
摘要:
The invention relates to a pump for delivering a fluid, especially a vane-cell pump, comprising a delivery device which is accommodated in a casing (2), a casing cover (3) located on the face, and optionally comprising a bearing flange (4) which is joined to the casing (2) on the side opposite said casing cover (3). A seal (5, 6) is arranged between the casing (2) and the casing cover (3) and is optionally arranged between the casing (2) and the bearing flange (4). In addition, the seal (5, 6) is inserted in a groove (8, 9) which is constructed in the casing cover (3) and which is optionally constructed in the bearing flange (4) and/or in the corresponding front face (7) of the casing (2). A leakage path (13) for the fluid extends between the delivery side (11) and the suction side (12). According to the invention, oil leakage located on the delivery side is effectively carried away while procedures relating to the construction or manufacturing techniques of the pump are reduced. The invention is characterized in that the leakage path (13) runs at least parallel, in areas, with regard to the seal (5, 6) on the seal inner side (14) - media side.
摘要:
A hydraulic power steering device (1) having a damper valve (10) arranged in hydraulic oil circuits (8, 9) connecting an oil path selector valve (11) inside a gear box to the right and left oil chambers of a power cylinder (6), wherein the damper valve (10) comprises a spool valve, a control oil chamber (21) of the spool valve (10) is connected to a hydraulic oil feed path (18) connecting a hydraulic pump (13) which is driven by an internal combustion engine so as to deliver hydraulic oil to the oil path selector valve (11), its back pressure chamber (17) is connected to a hydraulic oil circulating path (19) connecting the oil path selector valve (11) to a reservoir tank (12), and orifices (27, 28) are provided in the connecting oil paths (22, 20), respectively, whereby, when the pressure of oil delivered from the hydraulic pump (13) rises, the opening of the spool valve (10) is increased.
摘要:
A power steering device for assisting a steering operation by a hydraulic pressure generated from a hydraulic pump, comprising an electric motor, the hydraulic pump driven by the electric motor, and a control device which is positioned between the electric motor and the hydraulic pump and controls the electric motor all formed integrally with each other, wherein a radiating body is positioned between the control device and the hydraulic pump and a heat generated by the control device is radiated to the hydraulic pump so that the heat generated in the control device can be radiated efficiently, a radiation design can be made without being affected by the atmospheric conditions, and the members of the power steering device can be replaced with low heat resisting members.
摘要:
A power steering device that produces a steering assist force by a hydraulic pressure generated by a motor-driven pump, comprising a steering angle detecting section (11, S1, S4) which detects an absolute steering angle based on a steering mid-point and a relative steering angle, a first control section (31, S6, S8-S10) which starts the motor when an absolute steering angle detected by the steering detection section exceeds a first threshold value, and a second control section (31, S6, S11, S9, S10) which, while the steering angle detection section is not detecting an absolute steering angle, starts the motor when the change of a steering angle is larger than a second threshold value that is smaller than the first threshold value.
摘要:
Hydraulic arrangement (1) for distributing a pressurised fluid coming from a source (2) of pressurised fluid among a plurality of hydraulic units (3, 5, 6) of a work vehicle, at least one (5, 6) of the other hydraulic units (3, 5, 6) providing an electronic load sensing signal (16) and at least one (3) of the units (3, 5, 6) providing a hydraulic load sensing signal (12b), the hydraulic arrangement (1) further comprising a priority valve (7) configured to divide the flow of fluid between hydraulic units (3, 5, 6), priority valve (7) and source (2) being hydraulically controlled by a first hydraulic load sensing signal (12) resulting as the greatest of a plurality of hydraulic load pressure signals (12a, 12b) taken from units (3, 5, 6), hydraulic arrangement (1) further comprising a conversion unit (15) configured to transform electronic load sensing signal (16) of at least one of the other hydraulic units (5, 6) into an equivalent hydraulic load sensing signal (12c) so as to allow the aforementioned comparison among hydraulic load pressure signals (12a, 12b) to define the first hydraulic load sensing signal (12) controlling priority valve (7) and source (2).
摘要:
Druckversorgungsvorrichtung zur priorisierten Volumenstromaufteilung, insbesondere bei mobilen Arbeitsmaschinen, bestehend aus mindestens einer mittels LS-Signal ansteuerbaren Verstellpumpe (2) als Hauptpumpe, einer Konstantpumpe (4) als Hilfspumpe, zwei Druckwaagen, einem primär zu versorgenden System, insbesondere in Form einer Lenkhydraulik (PL), das ein LS-Signal abgibt, einem sekundär zu versorgenden System, das ein weiteres LS-Signal abgibt, insbesondere in Form einer Arbeitshydraulik (PA), und einem weiteren hydraulisch zu versorgenden System, insbesondere in Form einer Bremshydraulik (PB), wobei die eine Druckwaage (DW1) der Versorgung des primär zu versorgenden Systems (PL) und/oder des weiteren hydraulischen Systems (PB) dient, die andere Druckwaage (DW2) der Versorgung des primär zu versorgenden Systems (PL) und/oder des sekundär zu versorgenden Systems (PA) dient und wobei die jeweilige Druckwaage (DW1, DW2) von einem LS-Signal derart ansteuerbar ist, dass die Konstantpumpe (4) auch der Versorgung des sekundär zu versorgenden Systems (PA) dient.