| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reversible bottom plowing implement capable of securely holding a reversing frame at a desired angle including a state of a neutral posture by hydraulic operation. <P>SOLUTION: A piston rod 37 penetrates an adjustment piston 56 and extends outward from the distal end of a cylinder tube 32. A hollow 62 is formed in the piston rod 37, and a through hole 67 communicating with a space formed by a main piston 53 and the adjustment piston 56 is also formed therein. A hollow tube 57 within the cylinder tube penetrates the main piston 53 from the proximal end of the cylinder tube 32 to extend into the hollow 62 of the piston rod 37. By adjusting the quantity of oil on the distal end side of the adjustment piston 56, maximum extended positions of the main piston 53 and the piston rod 37 are adjusted, so that the plowing implement is put at a working posture in a field with the reversing frame turned in the lateral direction or at the neutral position with the reversing frame disposed along a mast. <P>COPYRIGHT: (C)2013,JPO&INPIT |
