초록 ▼

The control arrangement is equipped with a compressed air source, at least one leveling valve (15), with air suspension bellows (24) assigned to at least one vehicle axle, a switching valve (8) and an electric switch (1), which permits controlling the positions Stop, Raise, Lower and Drive. The swit

The control arrangement is equipped with a compressed air source, at least one leveling valve (15), with air suspension bellows (24) assigned to at least one vehicle axle, a switching valve (8) and an electric switch (1), which permits controlling the positions Stop, Raise, Lower and Drive. The switching valve (8) is electrically driven by two solenoid valves (6 and 7) and connects or interrupts the different pneumatic lines as is common in the art. With a no-pressurized switching valve (8) and/or non-energized solenoid valves (6, 7), however, the respective pneumatic lines (17, 18) from the switching valve (8) to the leveling valve (15) on the one hand and to the air suspension bellows (24) on the other hand are closed off. The positions Raise, Lower and Drive are assigned to the three activated positions of the two solenoid valves (6, 7).

대표청구항 ▼

Control arrangement for the random raising and lowering of the vehicle body of air-suspended vehicles with leveling control, including a compressed air source, at least one leveling valve, air suspension bellows assigned to at least one vehicle axle which bellows can be connected to the compressed a

Control arrangement for the random raising and lowering of the vehicle body of air-suspended vehicles with leveling control, including a compressed air source, at least one leveling valve, air suspension bellows assigned to at least one vehicle axle which bellows can be connected to the compressed air source or a non-pressurized exhaust to adjust a specified distance between vehicle body and vehicle axle, and a switching valve with the designated positions Raise, Lower, Drive and Stop built into the pneumatic line connections of the leveling valves with the air suspension bellows or with the compressed air source and the non-pressurized exhaust, which switching valve has at least one sliding member controlled by two solenoid valves, either of which individually, or both simultaneously, may be non-energized or energized to provide an inactivated solenoid position and at least three activated-solenoid positions, whereby said sliding member has four respective positions within the switching valve, said control arrangement being characterized in that (a) the Drive position is assigned to one of the solenoid-activated positions which locates the sliding member (26, 26′) so as to connect the air suspension bellows (23, 24) with the leveling valves (15, 16), the Raise position is assigned another of the solenoid-activated positions which locates the sliding member (26, 26′) so as to connect the air suspension bellows (23, 24) with the compressed air source (9), the Lower position is assigned to the third solenoid-activated position which locates the sliding member (26, 26′) so as to connect the air suspension bellows (23, 24) with the non-pressurized exhaust, and the Stop position is assigned to the inactivated-solenoid position whereby the sliding member (26, 26′) is located so as to close off each of the pneumatic lines to the leveling valves (15, 16) and to the air suspension bellows (23, 24); and (b) with a non-pressurized switching valve (8) and/or non-current carrying solenoid valves (6, 7) the sliding member (26, 26′) of the switching valve (8) is configured such and is in such an inactivated position that, regardless of the designated position of the switching valve, the respective pneumatic lines (17, 18, 21, 22) from the switching valve (8) to the leveling valves (15, 16) on the one hand and to the air suspension bellows (23, 24) on the other hand are closed off.