| 摘要 |
The invention concerns a device in air-suspended trucks to adjust the level of the truck loading plane. The device consists of a valve (8) which is fixedly secured to the loading plane and is in communication with a pair of lifting bellows (4, 5) incorporated in the air-suspension mechanism. The valve is mechanically connected to one of the wheel axles (2) of the vehicle by way of an articulated arm (9) which is adapted to sense a change of level between the loading plane and the wheel axle (2). In response to changes of the loading plane level, the articulated arm (9) opens the valve (8), said valve conducting pressurized air to or from the lifting bellows (4, 5) respectively for the purpose of adjusting the level of the loading plane. The device comprises a pivotal arm (10) which is arranged to control the opening/closing mechanism of the valve (8). At one of its ends the pivotal arm (10) is hingedly connected to the articulated arm (9) and at its opposite end it is connected to a control mechanism (11). With the aid of said mechanism (11) the pivotal arm (10) may be shifted between two end positions in which the valve (8) is in a maximum open condition for respectively supply of pressurized air and venting of pressurized air from the lifting bellows (4, 5) via an intermediate position in which the valve (8) is closed. |
