| 摘要 |
PURPOSE:To make tilting operation for a packing case ever so safe, by forbidding upright motion of the packing case at a time when a fact that the packing case is not in a running attitude is detected by a case detecting device. CONSTITUTION:When a packing case 1 is completely overturned on a undercarriage 4, it is in a running attitude whereby a lead switch of a case detecting device is turned on. Under the condition, when case tilt operating lever 12 is operated after a rear dumping pushbutton is pressed, a dump cylinder becomes extended longer. With this constitution, symmetrical hooks at the front side turns round by dint of tensile force of a spring with upward movements of hinge shafts 3, releasing engagement of these hinge shafts, whereby the packing case 1 is dumped rearward. |
