Winches with shpilevymi drums and sheaves kanatoveduschimi

Winches with shpilevymi drums and sheaves kanatoveduschimi

For shunting production and support operations at construction sites (for example, to pull from the place of discharge or heavy loads in the area serviced by a crane) to apply drum winch uncomfortable, because much of its length of rope needed Wind in several layers, which makes razmatyvanie rope and cause rejection it.

The most optimal shpilevoy drum, which is not navivaetsya rope, and it covers only a few races, and then go with the drum and placed next to the bay. Drum performed concave shape, providing job placement turns of the rope in the middle part of it. Tractive force developed by the forces of friction between the rope and the drum.

Winches with shpilevymi drums are used only as traction, as with the release sbegayuschego end of the rope force at the end of nabegayuschem no effect. To ensure work shpilevyh winches for lifting them establish kanatoveduschy pulleys, and sbegayuschy navivaetsya rope to a special drive-drum reels. Structures such a device called winches with kanatoveduschimi pulleys. Their appropriate use of a large crane with a lifting height (for example, in the construction of high-rise buildings) or as a special winches for specific operating conditions.

Winches kanatoveduschimi with pulleys and find application as a lifting device hanging scaffoldings used in the repair of facades. The difference between these structures is simply that sbegayuschy end of the rope not navivaetsya on reels, and hangs under load without ceasing to any position in height at a certain level, because when moving scaffoldings happens only on kanatoveduschim perematyvanie rope pulleys.