| 摘要 |
The invention refers to a slip protection means in the form of a tip or the like to improve and simplify a mounting procedure of said slip protecting means (1), which is intended to be screwed into a gripping surface (5) on e.g. a tyre for a vehicle such as tractors. Said slip protecting means (1) is formed like a screw (8) having at least one screw thread (3), a first end (11) and a tightening portion (4) in another end (13) having at least one friction extension (2) and said tightening portion (4) having mainly the same diameter or width (15) across the longitudinal direction (17) of the screw (8) as the diameter (7) of the screw thread (3), whereby during the screwing of the slip protecting means (1) into the gripping surface (5) with the first end (11) directed towards the gripping surface (5) by aid of a tool (9) grasping around or provided at least a portion of said tightening portion (4) a penetration is obtained of at least one part of said tightening portion (4) into the gripping surface (5), said gripping surface (5) in that case is pressing against said tool (9), which then automatically is released from its gripping around said tightening portion (4) at the same time as the screwing procedure is stopped, when a desired, predetermined screwing in length (12) of the slip protecting means (1) has been occurred into the gripping surface (5) and then also the extension (2) is situated in a desired, predetermined position for improving the friction against the foundation (6). |
