| 摘要 |
<p>PURPOSE:To facilitate dumping of the loaded objects by fitting a rotary supporting piece on a support consisting of a moving arm and a supporting head in such a way as rotatable and movable, and thereby allowing the rear door to shift in the dumping direction of the loaded objects in accordance with the force of dropping. CONSTITUTION:If the dumping force of the loaded objects is strong, the rear door 27 is pushed intensely to cause movement of a rotary supporting piece 15 in the dumping direction of the objects, so that a rotary shaft 16 moves while revolving in a groove 14 for guidance of said rotary supporting piece. If the force of the loaded objects to run against the rear door 27 is still greater, a moving arm 11 of a support 10 will slip off from the housing for a rotary support 1 against the reactive force of a spring 31. If dropping objects act still strongly after slipping-out for a length corresponding to the moving groove, a rotary shaft 7' of said rotary support 1 will be in effect to turn it in the X direction, and now the rear door 27 is heaved further up to facilitate drop of the objects.</p> |
