The invention provides an axle lifting device and a transport vehicle. The axle lifting device is used for being matched with a tractor to lift an axle of a transport vehicle, and the tractor comprises an oil tank used for loading hydraulic oil, an oil pump connected with the oil tank and a power takeoff connected with the oil pump. The axle lifting device comprises a lifting oil cylinder, a control piece and a connecting piece. The lifting oil cylinder comprises a cylinder body fixed to the frame and a piston rod arranged in the cylinder body, and the piston rod vertically extends and can stretch out and draw back relative to the cylinder body. The control piece is connected with the power takeoff and can control the power takeoff to work, and then the oil pump is driven to pump hydraulic oil in the oil tank into a cylinder body of the lifting oil cylinder. The connecting piece connects the piston rod with the axle; the hydraulic oil enters or retreats from the cylinder body, so that the piston rod moves up and down to drive the connecting piece to ascend and descend, and then the axle is lifted. Compared with compressed air driving, hydraulic driving is better in stability.
本发明提供了一种车桥提升装置及运输车辆。车桥提升装置用于与牵引车配合而实现运输车辆的车桥的提升,牵引车包括用于装载液压油的油箱、与油箱连接的油泵,以及与油泵连接的取力器。车桥提升装置包括提升油缸、控制件以及连接件。提升油缸包括固定于车架上的缸体以及设置于缸体内的活塞杆,活塞杆竖向延伸且活塞杆能够相对于缸体伸缩;控制件与取力器连接,而能够控制取力器工作,进而带动油泵将油箱内的液压油泵至提升油缸的缸体内;连接件连接活塞杆与车桥;其中,液压油进入或退出缸体,使活塞杆上下移动,而带动连接件升降,进而提升车桥。本发明中的液压驱动相较于压缩空气驱动,稳定性能更好。
Axle lifting device and transport vehicle
车桥提升装置及运输车辆
2023-03-14
Patent
Electronic Resource
Chinese
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |