泰山 25拖拉机限动链条原设计为一块三角铁制成，三角铁的一边钻有三个Φ 14.3mm的圆孔作为联接下拉杆两侧链条的牵引点销孔。 为了确保农具在作业时的稳定性及可靠性，机具在工作状态时两侧链条必须调整收紧，但由于原设计的限动链条座不合理，链条收紧后农具在提升或下降时? Taishan 25 tractor chain was originally designed as a triangle made of iron, triangular iron side of the drill three Φ 14.3mm round hole as a link connecting rod on both sides of the traction pin hole. In order to ensure the stability and reliability of farm tools in operation, the machine must adjust and tighten the chains on both sides when it is in working condition. However, due to the unreasonable limit chain of the original design, when the chain is tightened and the farm implements are being raised or lowered?