Anti-skid device

摘要

In an anti-skid device having lengths of chain which can be thrown under a vehicle wheel by means of a rotary plate which is arranged at the end of a pivotable extension arm (5), a drive unit having a piston (16) which is arranged in a cylinder (11) and whose movements are transmitted by a thrust chain (22) which assumes the function of the piston rod, to a drive pinion (29) whose shaft bears the extension arm (5) is used to apply the pivoting movement to the extension arm (5).

主权项

1. Anti-skid device
with several lengths of chain fixed to a rotary holder,
portions of the lengths of chain facing away from the holder in an operating position being thrown from the rotating holder under centrifugal action to an area of a ground-contacting surface of a rotating vehicle wheel,and with a drive unit with a piston guided in a pneumatic cylinder, by which drive unit, with an interposed transmission element formed by a thrust chain comprising a front link and an end link, an extension arm bearing the holder can be moved from a rest position into an operating position and back, andby which drive unit pivoting movements can be applied to a drive wheel or drive pinion connected to the front link, a shaft of said drive wheel or drive pinion being held in a housing that bears the extension arm for the holder,characterized in thatthe end link of the thrust chain (22) is directly connected to the piston (16) of the drive unit (6), thus forming a piston rod,and that the housing (12) accommodating the drive wheel or drive pinion (29) and a part of the cylinder (11) facing the housing (12) form a common pressure space to which compressed air can be admitted, wherein:
the housing (12) accommodating the drive pinion (29) and the shaft (31) thereof is provided with guide insets (33, 34) for the thrust chain (22), and a further guide is formed by an annular guide web (40) enclosing the tip circle of the teeth of the drive pinion 29 on a part of its circumference with clearance.