According to the trait of JOY sprag ram in structure and overhaul experiences, we have contrived a testing rig for JOY sprag ram P.O.C. lock to guarantee the overhaul quality of the hy...

• 根据JOY支架护帮油缸在结构上的特点和以往的大修经验,研制出一种JOY支架护帮油缸双向锁专用的试验台,从而保证了大修的质量。