| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a power and free conveying system basically composed of a module system with parts interchangeable and assembled, and used in an automobile assembly building. SOLUTION: This power and free conveying system comprises a track assembly 26 having free track members 40, 48, a power trolley 110 supported on the power track members so as to move along them, and a free trolley 54 supported on the free track members so as to move along them. The track assembly 26 has a C-shaped first side support member 32 and an opposed C- shaped second side support member 34. The free trolley 54 has a movable holdback dog 104 engageable and disengageable with the power trolley 110, and a retractable dog 84 having a first position engageable with the power trolley 110 and a second position disengageable from the power trolley and engegeable with the holdback dog 104 to completely disengage the free trolley 54 from the power trolley 110 upon engaging another one of the free trolley 54.</p> |
