Cable Drum Guard Plate Axial Adjustment for Winding Precision
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cable winches face issues with winding pattern disturbances and cable cutting due to varying cable diameters and tensile forces, especially in multi-layer windings, leading to cable damage and inefficiencies in high-strength fiber ropes which exhibit greater diameter deviations than steel cables.
Innovation Solution
A cable drum with axially adjustable guard plates that can adapt to changing cable diameters, featuring an adjustable inner wall part and pretensioning device to maintain clearance-free winding, allowing for precise adjustment of guard plate spacing to support the cable effectively across multiple layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the drum body is provided with a grooving to guide cable turns next to each other with as little clearance as possible, then the winding progression image is improved, but the problem of cable cutting in between two turns of the winding layer below occurs due to clearance accumulation in multi-layer windings
Solution Approach 1:
The guard plates are made axially displaceable relative to the drum body, allowing the spacing between them to be dynamically adjusted. This enables the guard plate spacing to adapt to the actual cable diameter, compensating for diameter variations and preventing clearance accumulation that leads to cable cutting in multi-layer windings.
Solution Approach 2:
The spacing between guard plates is made variable through axial displacement, allowing the parameter of guard plate distance to be changed according to the actual cable diameter. This parameter adjustment prevents the accumulation of clearances between cable turns in multi-layer windings, thereby preventing cable cutting.
2Duration of action of moving object
If the cable diameter is not constant due to production variations or cable operation, then the cable can be wound initially, but after a certain period of use, the reduction in cable diameter results in accumulation of clearance leading to cutting in of the cable
Solution Approach 1:
The system allows for periodic measurement of the actual cable diameter and corresponding adjustment of the guard plate spacing. This feedback mechanism ensures that the guard plates maintain appropriate spacing throughout the cable's service life, preventing clearance accumulation and cable cutting even as the cable diameter changes during operation.
Solution Approach 2:
The axially displaceable guard plates enable dynamic adjustment of the winding space to accommodate cable diameter changes over time. This dynamic adaptation maintains proper winding progression image throughout the cable's service life, preventing the harmful effects of clearance accumulation.
3Weight of moving object
If high-strength fiber ropes are used to replace steel cables for weight saving, then the lifting capacity is increased, but the diameter deviations are greater leading to more frequent winding image errors
Solution Approach 1:
The guard plate spacing is made adjustable to compensate for the greater diameter deviations characteristic of high-strength fiber ropes. By varying the spacing parameter according to the actual rope diameter, the system maintains proper winding progression image despite the larger diameter variations inherent in fiber rope construction.
Solution Approach 2:
The axially displaceable guard plates provide a dynamic adjustment mechanism that adapts to the diameter variations of high-strength fiber ropes. This dynamic capability allows the system to maintain accurate winding progression image throughout the rope's service life, overcoming the disadvantage of greater diameter deviations.
Data Source
AI summary
The invention relates to a cable drum for a cable winch of a cable drive, having a drum body and two guard plates which surround the drum body on the face sides and delimit a winding space therebetween, wherein at least one of the guard plates has at least one inner wall part which is adjustable axially in the direction of the drum longitudinal axis such that the distance between the guard plates is adjustable.