POWER CRANE LOAD TROLLEY DRIVE WINCH DRUM Russian patent published in 2005 - IPC

FIELD: materials handling facilities.

SUBSTANCE: invention relates to drum of multifunctional wire winches. Proposed drum contains sections installed on drive shaft with clearance between adjacent end faces and provided with screw grooves of one direction on working surfaces made over radius of solid of revolution for winch wire ropes. Sections are made of equal diameter, and adjacent outer working surfaces of sections are provided with smooth parts. One of sections of rigidly coupled with shaft and the other is installed on shaft with possibility of fixing. Ridge of screw groove of each section from side of corresponding smooth part is made smoothly decreasing from maximum height to level of said section, and clearance between end faces of drum sections is equal to (0.002-0.1)R where R is radius of screw groove of section working surfaces, and length L of each smooth part of drum section is equal to (2-4)R.

EFFECT: improved reliability of drum owing to prevention of kinking of wire ropes.

6 dwg