Spherical Hoist Rope Connector for Rope Shovel Torsional Loads
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Solution Overview
Problem
Existing rope shovel systems face challenges in efficiently managing torsional loads during the dig cycle, leading to limitations in dumping height and increased weight and cost due to complex coupling mechanisms between the hoist rope and the dipper.
Innovation Solution
The implementation of a hoist rope connector with a link and spherical coupling that allows for rotational movement between the hoist rope and the dipper, providing a simplified coupling mechanism that permits transverse rotation and reduces the need for additional pins, thereby improving mobility and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex coupling mechanism is used between the hoist rope and the dipper to manage torsional loads, then the reliability is improved, but the device complexity increases and weight increases
Solution Approach 1:
The patent employs a spherical coupling mechanism that allows rotational movement in multiple directions to handle torsional loads. The spherical geometry enables the connection to accommodate angular deviations and rotational forces naturally, replacing complex multi-component couplings with a simpler spherical interface that maintains reliability while reducing complexity.
Solution Approach 2:
The coupling mechanism is designed to be dynamic rather than rigid, allowing rotational movement between the link and the dipper. This dynamic capability enables the system to adapt to varying torsional loads during the dig cycle, maintaining reliability through controlled movement while simplifying the overall structure by eliminating the need for complex rigid coupling components.
2Strength
If additional pins and complex coupling mechanisms are used to connect the hoist rope and dipper, then the strength is improved, but the weight increases and cost increases
Solution Approach 1:
The patent merges the functions of multiple pins and coupling components into a single integrated spherical coupling mechanism. This consolidation maintains the necessary connection strength by providing a robust spherical interface while eliminating redundant components, thereby reducing the overall weight and cost of the coupling mechanism.
Solution Approach 2:
The spherical coupling mechanism serves multiple functions simultaneously: it provides structural support, allows rotational movement, and manages torsional loads. This multi-functionality replaces what would traditionally require multiple separate components (pins, bearings, coupling elements), reducing weight and cost while maintaining or improving connection strength.
3Stability of the object's composition
If a rigid coupling is used between the hoist rope and the dipper, then the structural integrity is improved, but the adaptability decreases and dumping height is limited
Solution Approach 1:
The coupling mechanism transitions from a rigid static connection to a dynamic connection that allows controlled rotational movement. The spherical coupling maintains structural integrity through its robust design while enabling adaptive movement in multiple directions, allowing the dipper to rotate and dump at greater heights without compromising the strength of the connection.
4Device complexity
If a simplified coupling mechanism is used to reduce weight and cost, then the device complexity is reduced, but the ability to manage torsional loads may be compromised
Solution Approach 1:
The spherical coupling geometry inherently provides the capability to manage torsional loads through its ability to rotate and accommodate angular deviations. This simple spherical design maintains reliability for torsional load management while achieving the goal of reducing device complexity compared to traditional multi-component coupling mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances the dumping height, reduces weight and cost, and improves overall performance by allowing better control and payload capacity of the shovel, while maintaining structural integrity and mobility.
Implementation Method 1
a spherical coupling positioned adjacent the second end and configured to be coupled to the dipper. The spherical coupling permits rotational movement between the second end and the dipper in multiple directions.
Data Source
AI summary
A hoist rope connector for a rope shovel includes a link extending between a first end and a second end. A rope attachment member is positioned adjacent the first end and configured to engage a hoist rope. A spherical coupling is positioned adjacent the second end and configured to be coupled to a dipper. The spherical coupling permits rotational movement between the second end and the dipper in multiple directions.