Telescopic Drive Tensioning Unit for Scraper Chain Conveyors
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Solution Overview
Problem
Existing drive and tensioning units for scraper chain conveyors in mining applications face challenges in bridging installation space for hydraulic cylinders, making their removal and maintenance difficult, especially when used as face conveyors in mining installations.
Innovation Solution
The design includes recesses in the side boards and side walls with detachable bearing brackets, allowing hydraulic cylinders to be used on either side without additional modifications, enabling the same unit to be used at both ends of a trough line regardless of geological conditions, and minimizing component diversity by using identically constructed recesses and brackets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If hydraulic cylinders are arranged externally on the side boards or side walls, then installation and maintenance access is improved, but the machine frame must be moved away to access the cylinders, reducing operational efficiency
Solution Approach 1:
The machine frame is divided into modular components with the hydraulic cylinder mounting brackets as separate detachable elements. This segmentation allows the cylinders to be accessed and maintained independently without moving the entire mining machine, resolving the contradiction between maintenance accessibility and operational efficiency.
2Productivity
If hydraulic cylinders are arranged inside the machine frame, then mining machine operational efficiency is improved, but removal and maintenance of the cylinders becomes considerably more difficult
Solution Approach 1:
The hydraulic cylinder mounting brackets are designed as extractable components that can be removed from the machine frame. This allows the cylinders to be positioned inside the frame for operational efficiency while enabling easy extraction for maintenance, resolving the contradiction between operational efficiency and maintenance accessibility.
3Adaptability or versatility
If different configurations of recesses and brackets are used for different sides of the machine frame, then specific application requirements are met, but the number of different components increases
Solution Approach 1:
The mounting brackets and recesses are designed with universal symmetry, allowing the same components to be used on both sides of the machine frame. This universal design provides adaptability for different applications while minimizing the number of different components, resolving the contradiction between versatility and device complexity.
4Device complexity
If the same drive and tensioning unit is used at both ends of a trough line, then component standardization is improved, but the design must accommodate various geological conditions and dip directions
Solution Approach 1:
The mounting brackets and recesses are designed with symmetrical features that allow the same standardized components to be installed in different orientations and configurations. This enables the use of identical drive and tensioning units at both ends of a trough line while accommodating various geological conditions and dip directions through flexible installation arrangements.
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 configuration simplifies the installation and removal of hydraulic cylinders, allows for flexible side placement, and reduces the number of components, enabling the drive and tensioning unit to be used effectively in various mining configurations without requiring extensive modifications.
Implementation Method 1
at least one hydraulic cylinder, each hydraulic cylinder being supported at one end in a connecting joint on a side board of the machine frame head and at the other end in a connecting joint on a side wall of the machine frame base
Data Source
AI summary
A drive and tensioning unit for a scraper chain conveyor, in particular a face conveyor for drum cutter-loader mining apparatus, includes a telescopically configured machine frame having a machine frame base and a machine frame head, which is displaceable relative to the machine frame base by at least one hydraulic cylinder and has bearing recesses for supporting a chain drum shaft. Each hydraulic cylinder is supported at one end in a connecting joint on a side board of the machine frame head and at the other end in a connecting joint on a side wall of the machine frame base. The connecting joints include a recess in the side boards and the side walls and bearing brackets detachably anchorable in the recesses. Each of the recesses provided in the side boards and in the side walls are structurally identical.