Hoisting Winch Drum Axial Adjustment for Cable Winding
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Solution Overview
Problem
Hoisting winches face issues with cable cutting between winding layers due to varying cable thickness tolerances and run-off angles, especially with large cable lengths, leading to displacement and potential cable destruction, and existing solutions result in heavy, expensive winches with high torques.
Innovation Solution
The hoisting winch is designed with an axially adjustable and tiltable/pivotable drum, along with a transverse cable guide, to maintain a small cable run-in angle across different part winding regions, minimizing transverse forces and preventing cable cutting, without increasing drum size or weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a very large drum diameter is selected to wind up large cable lengths with limited windings, then the number of windings is reduced, but the drum becomes heavy and expensive with high torques and wear
Solution Approach 1:
The winding region is divided into multiple part winding regions by additional flanged wheels, allowing the cable to be wound in sections. This segmentation enables the use of a smaller drum diameter while maintaining the capability to wind large cable lengths by performing multiple winding passes across the divided regions.
2Reliability
If the winding region is divided into multiple part winding regions, then cable winding problems are reduced, but the drum length and width increase leading to larger transverse forces
Solution Approach 1:
The hoisting drum is made axially adjustable relative to the cable run-in guide, allowing dynamic repositioning of the drum along its axis. This dynamic adjustment enables optimization of the cable run-in angle for each part winding region, minimizing transverse forces while maintaining reliable winding across divided regions.
3Ease of operation
If cable thickness tolerances are considered with standard pitch matching, then cable sections have necessary play, but cable gaps add up over windings causing displacement and cable cutting
Solution Approach 1:
The system performs preliminary winding in divided part winding regions before completing the full cable length. This preliminary action in segmented regions allows better control of cable placement and gap management, preventing the accumulation of gaps that would lead to displacement and cable cutting in continuous winding.
4Productivity
If the cable run-in angle is increased to accommodate large cable lengths, then more cable can be wound, but transverse displacements and winding problems increase
Solution Approach 1:
The axially adjustable drum allows the run-in angle to be dynamically optimized for each winding operation. By adjusting the drum position, the system can maintain smaller run-in angles that reduce transverse displacements while still accommodating large cable lengths through multiple passes across the divided winding regions.
Data Source
AI summary
The present invention relates to a hoisting winch, in particular to a hoisting gear winch, having a hoisting drum whose winding region is bounded by two lateral flanged wheels, wherein at least one further flanged wheel is provided between the lateral flanged wheels for dividing the winding region into at least two part winding regions, wherein the cable can be guided beyond the named further flanged wheel into the at least two part winding regions. It is suggested in accordance with the invention to move the hoisting drum and/or a transverse cable guide arranged in front of the hoisting drum transversely to the longitudinal direction of the running in/running off cable approximately in the longitudinal direction of the drum and/or to adjust the angular position of the hoisting drum transversely to the longitudinal direction of the drum with respect to at least one transverse axis.