Movable Dragline Rope Guide for Wear Reduction
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Solution Overview
Problem
Existing dragline operation systems face issues with wear and limited flexibility due to the fixed deflection angle of the grave rope guide, leading to increased wear on the grave rope and winch, especially with large winders where the guide protrudes excessively.
Innovation Solution
A linearly movable grave rope guide that adjusts the deflection angle of the grave rope, allowing for reduced wear and increased flexibility, equipped with drive means and control systems to automate the adjustment based on detected cable angles, and featuring rollers to manage lateral deflection and positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the grave rope guide is fixed at a minimum distance to meet the maximum allowable deflection angle, then the deflection angle is controlled, but the guide protrudes very far and causes increased wear on the grave rope and winch
Solution Approach 1:
The grave rope guide is made movable relative to the working machine, allowing dynamic adjustment of its position. This enables the guide to move closer to or farther from the winch depending on operational requirements, optimizing both deflection angle control and wear reduction. The movable guide can be positioned at optimal locations during different phases of operation rather than being fixed at a conservative minimum distance.
Solution Approach 2:
The invention changes the positional parameter of the grave rope guide by making it movable. This allows the distance between the guide and the winch to be varied, enabling optimization of the deflection angle and reduction of rope wear simultaneously. The guide can be repositioned to achieve better geometric conditions for rope routing.
2Device complexity
If the grave rope guide is fixed in position, then the structure is simple, but the flexibility in selecting winch types and positioning is limited
Solution Approach 1:
The grave rope guide is designed to be movable relative to the working machine, transforming it from a static component to a dynamic one. This mobility provides flexibility in positioning the guide to accommodate different winch types and locations while maintaining relatively simple structural implementation through guided movement mechanisms.
Solution Approach 2:
The movable grave rope guide serves multiple functions: it can adapt to different winch types (drum winches, lever winches, cable winches), accommodate different winch positions on the superstructure, and optimize rope routing for various operational conditions. This multi-functionality increases system versatility without proportionally increasing complexity.
Data Source
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AI summary
The invention relates to a working machine (10), in particular a cable excavator, for scraper bucket operation, with a scraper bucket (30) received via a lifting rope, wherein the insert can be retracted by means of at least one digging rope (40) for carrying out the scraping movement and a digging rope guide (50) for guiding the digging rope (40) on the working machine (10) is arranged, wherein the digging rope guide (50) is movable, in particular linearly movable.