SAFETY DEVICE FOR THE TRAVELLING GEAR OF VIBRATORY ROLLERS
A safety device is disclosed for the travelling gear of vibratory rollers that can be operated in a known manner by operating rods by means of a working lever (18) and that is forcibly switched off when a ratchet lever (4) is in a switching-off position from which it must be lifted by the operator against the force of a spring in order to release the working lever. A clutch (24) arranged between the working lever and the operating rods can be coupled by lifting the ratchet lever (4) and is loaded by a spring in its uncoupled position. The locking device has a first disk (25) provided with teeth (25a) on its front face interlockable with the working lever (18) and that is rotated when the working lever is actuated, as well as a second disk (26) opposite to the first, interlocked with the ratchet lever (4) and provided on its side opposite to the teeth (25a) with a rubber elastic lining. This locking device allows the working lever (18) to be gradually adjusted when the clutch (24) is coupled whereas the ratchet lever (4) is not yet fully lifted and locks the working lever (18) in its adjusted position when the ratchet lever has been fully lifted.