发明名称 HOLE PIERCING MACHINE FOR PROP FOR TUNNEL MULCH
摘要 PROBLEM TO BE SOLVED: To simplify handling operation of a hole piercing machine for props for a tunnel mulch performing a hole piercing work and increase work efficiency by mounting an elevating frame having a hole piercing lever and a marker lever, and going up and down the elevating frame. SOLUTION: This hole piercing machine for props for a tunnel mulch is constructed to detect that a lowering distance of an elevating frame 1 arrives a prescribed value and switch an action of a hydraulic pressure swithcing value 32 to raise the elevating frame 1 when the elevating frame 1 is made to a lowering state by an operation of an operating lever 14, and further to detect that the elevating frame 1 arrives the highest position and switch the hydraulic pressure switching valve 32 to stop the elevating frame 1 at the highest position, then a hand operation of a vehicle body is simplified.
申请公布号 JP2000116253(A) 申请公布日期 2000.04.25
申请号 JP19980291206 申请日期 1998.10.13
申请人 ATEX CO LTD 发明人 TAKECHI MAKOTO;TANAKA SHIGERU;SAKAMOTO NAOYUKI
分类号 A01G13/02;(IPC1-7):A01G13/02 主分类号 A01G13/02
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