| 摘要 |
PURPOSE: To provide a time delay valve of a hydraulic motor capable of reducing the number of parts, saving manufacturing and assembly devices, and setting and changing delay time simply and easily and being free from a possibility of being damaged. CONSTITUTION: Since a time delay valve 31 is formed integrally with a hydraulic motor housing 1, it is possible to dispense with a tightening bolt and washer for tightening and mounting the time delay valve and an O ring for preventing a leakage of oil in a tightening section and reduce the number of parts. Moreover, since a travel stroke of an orifice spool 45 and a tensile force of a spring 47 supporting it elastically are changed by simple operation that a support bolt 53 is tightened or released, it is possible to set and change delay time of the time delay valve very easily. |
