| 摘要 |
PCT No. PCT/SE92/00040 Sec. 371 Date Jun. 21, 1993 Sec. 102(e) Date Jun. 21, 1993 PCT Filed Jan. 22, 1992 PCT Pub. No. WO92/12896 PCT Pub. Date Aug. 6, 1992.Hydraulic steering arrangement, comprising a first hydraulic pump connected to a steering wheel, a piston cylinder device hydraulically coupled to the first hydraulic pump and arranged for connection to a steering mechanism, a second hydraulic pump and a second piston cylinder device hydraulically coupled via a servo valve to the second hydraulic pump. The second piston cylinder device is connected to the steering mechanism. The servo valve has an actuating element which is affected by the first piston cylinder device to activate the second piston cylinder device, and which comprises a tubular element limitedly displaceable relative to the servo valve housing. A guide (20) is axially displaceably mounted in the tubular element (13) and is joined to the piston cylinder devices (5, 17). The guide is provided, at a portion (21) extending out of the tubular element, with a stop (22) which can be fixed at different axial positions on the extending portion to limit the maximum extent of stroke of the piston cylinder devices in one direction.
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