LAND-GRADING CARRIER ATTACHED TO AGRICULTURAL TRACTOR

摘要

PURPOSE:To prevent the cutting of chains and impact thereto by a method in which a stopping chain is attached between a carrier and a fixing part, and a spring for absorbing shock is provided to the end of the chain in such a way as to enable the carrier to be dumped only at a fixed angle. CONSTITUTION:One end of a chain 56 is connected to the front wall 36 of a carrier 35, and the other end is connected with a link 58 provided to a fixed portion 57. Then, the lower end of a spring 67 is contacted with the upside of a supporter 64, the upper end is contacted with the downside of a collar 66, and a guide bar 62 is energized in such a way as to cause it to rise elastically. Excavated soil is fully loaded on the carrier 35, and after the carrier 35 arrives in a low land, the coupling of the carrier 35 to the fixed portion 57 is released, whereupon the carrier 35 is dumped and stopped by as much as the length of the chain 56 by its own weight. In this case, the chain 56 moves in the direction of arrow (a) to turn the link 58 clockwise, the other end 61 is lowered in the direction of arrow (b), and the guide bar 62 is lowered through a shaft 63 against the spring 67. Thus, the carrier can be stopped by alleviating impact thereto.