| 摘要 |
A load binding includes a strap 11 and a winch 9. The strap 11 is mounted on a drum 21 which is rotatably mounted on and driven by a shaft 23 via a torque-limiting clutch arrangement 25-27. The winch 9 can be set in either an open condition (fig. 2) where the strap 11 can be both wound out from the drum 21 against bias and wound onto the drum under bias or a ratchet condition (fig. 10) in which the strap can only be wound onto the drum. A foot-operable control mechanism is used to set the winch in the open or ratchet position and a pawl lever 45 operated by action on pedals 47, 49 engages ratchet teeth 43 mounted on the drum 21. The winch includes a drive means acting (via gearing) on the shaft 23 for tensioning the strap (via the clutch) when the winch is in the ratchet condition. A locked condition is also disclosed in which the pawl lever is secured against movement. |
