| 摘要 |
A straddle loader for lifting a load includes an upper frame having a spreader for grasping the load, a compartment for an operator, at least two traveling frames for receiving the load, and a lifting system connected to the upper frame and the plural traveling frames. The lifting system varies the distance between the upper frame and the plural traveling frames by uniformly transferring the load to the traveling frames so that the upper frame and the traveling frames remain parallel and perpendicular. The straddle loader further includes a plurality of telescoping beams associated with the lifting system so that at least two telescoping beams are connected to each of the traveling frames. Each telescoping beam is capable of extension and retraction. Stationary pivot shafts connect each end of each of the telescoping beams to the respective upper frame or traveling frame and to a pressure cylinder associated with each of the telescoping beams. The pressure cylinder is operatively mounted between one of the traveling frames and the respective one of the telescoping beams associated with the one frame and exerts a force on the respective telescoping beam simultaneous with extension of the telescoping beam. |
