| 摘要 |
<p>The directs and returns the forks of a lift truck relative to a moving frame. Each fork (1) is fixed at its end to a shaft (2), held between two fixed bearings (4,6). There are pins (7,8) to drive the ends (12,10) of a spring (9) wound around the shaft. Fixed pin stops (11,13) are fitted at either end of the spring, which is of helical shape, and fitted on to the bearings. These stops are also situated on the same side as the corresponding drive parts. The spring is stressed when the fork is in equilibrium.</p> |
