Hold-down mechanism for a dock leveller

Details Hold-down mechanism for a dock leveller Hold-down mechanism for a dock leveller

E - Fixed Constructions

01

D

14/2

E01D 1/00 (2006.01)

Patent

CA 1277112

ABSTRACT OF THE DISCLOSURE A mechanical dock leveller having a ramp pivotally connected to a support frame which is raised upwardly by a spring biased device includes a hold-down mechanism for holding the ramp at any desired raised position. The hold-down mechanism includes a frictional brake which seizes the hold-down for the ramp at its desired elevation. The frictional brake yields when additional upward force is exerted on the ramp, such as caused by truck springs during unloading of the truck. This arrangement avoids damage to the ramp construction and is accomplished by a durable friction braking system which provides for a controlled infinite raising of the ramp due to truck bed elevation.

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