发明名称 |
OPERATION CONTROL DEVICE FOR CONCRETE PUMP WITH BOOM |
摘要 |
PROBLEM TO BE SOLVED: To prohibit the occurrence of resonance due to the coincidence of the natural frequency of a boom with the switching timing of a concrete piston. SOLUTION: A vibration detector 35 is installed at the end of a boom 5 for a concrete pump vehicle. When a detection signal from the vibration detector 35 is at a given value or more a instruction is given from a controller 36 so as to change the switching timings of a suction discharge valve provided in a concrete pump 3 and a concrete piston to be moved forward/backward in mid course. An offset between the natural frequency of the boom 5 and of the switching timing of the concrete piston causes the cancel of resonance.
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申请公布号 |
JP2000282687(A) |
申请公布日期 |
2000.10.10 |
申请号 |
JP19990092232 |
申请日期 |
1999.03.31 |
申请人 |
ISHIKAWAJIMA CONSTR MACH CO |
发明人 |
MICHIZUKA KATSUYA |
分类号 |
E04G21/04;F15B11/22;(IPC1-7):E04G21/04 |
主分类号 |
E04G21/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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