| 摘要 |
PURPOSE:To prevent a rice-planting vehicle or the like from rolling during making a U-turn for the purpose of improving its safety by so constituting a mechanism as to equip both end of the rod seesawing centering its middle with a right and left wheels and as to provide a lock pin of acting to stop their seesaw. CONSTITUTION:A lock pin 11 remains unlocked by being pulled with a wire 15 while the vehicle is in use for a work. This allows a rod 8 to seesaw freely being supported by a pin 9 with the result that a float contacts with the soft surface of rice field to keep the vehicle body horizontally and to make a right and left wheels seesaw freely according to unduration of plow ground. When making a U-turn, the wire 15 is loosened and the lock pin 11 is applied to a receptacle slot 18 using spring force. This causes the rod 8 to regulate its seesaw and makes the difference between each height of the right and left wheels lessen. Hence, the operational stability during making a U-turn can be improved. |
