| 摘要 |
<p>PURPOSE:To simplify construction, by engaging a spring member, which acts if a pump temperature increases to a predetermined value or more, with a helical groove so as to disconnect a driving shaft of the first pump from that of the second pump. CONSTITUTION:The first pump driving shaft 9 provides in its shaft end a main shaft 10, which serves for the second pump driving shaft, to be coaxially arranged, and both the shafts are connected by a connection member 14. If a pump temperature increases to a predetermined value or more, a shape memory alloy made spring 6 extends flying out a springing rod 7 to be meshed with a helical groove 15, and the connection member 14 moves disconnecting the main shaft 10 from the pump driving shaft 9. Accordingly, the protection of a system having an oil hydraulic pump can be promoted by simplified constitution.</p> |
