| 摘要 |
A hydraulic drive of a grab loader consists of a hydraulic reservoir, a hydraulic pump, a distribution valve, two grab hydrocylinders, a hydrocylinder of arm flexion, a pressure reducing valve, which are interconnected by hydraulic pipelines. Rod end and head end of hydraulic cylinder of arm flexion are interconnected by a double-chamber control unit, wherein the first chamber is connected by hydraulic line to the rod end of hydraulic cylinder of arm flexion with possibility of a piston displacement therein while deforming a springing element, the second chamber is connected by hydraulic line to the head ends of two grab hydrocylinders with possibility of moving the piston with hole and rod while deforming the springing element and providing possibility of connection of the holes of piston with hole and holes of the dual-chamber control unit housing connected to the rod end and head end of the hydraulic cylinder of arm flexion, and the head end is connected to the pressure reducing valve. |
