Slag Door Pusher Boom Roller Interface Wear Reduction
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Solution Overview
Problem
Existing slag pusher machines experience excessive wear and operational control issues due to clearance between telescoping boom sections, leading to increased maintenance time and premature failure, particularly in the refractory surrounding the slag door opening.
Innovation Solution
A slag door pusher apparatus with a boom featuring a roller pair assembly that acts as an interface between telescoping segments, reducing wear and stress on actuators, and allowing for more even force distribution by positioning hydraulic actuators on the sides rather than the top, along with a pivot assembly for enhanced movement control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wear plates are used between telescoping boom sections, then the boom sections can be connected, but excessive clearance develops due to wear leading to increased maintenance time and operational control problems
Solution Approach 1:
A roller assembly is introduced as an intermediary component between the inner and outer boom sections. The roller assembly includes a roller that contacts both boom sections and rotates on a pin, serving as a mediator that eliminates direct sliding contact between the wear plates and boom sections, thereby preventing clearance development while maintaining the telescoping connection.
2Ease of operation
If wear plates are positioned between boom sections, then the boom sections can telescope, but the wear plates become worn leading to excessive clearance and operational control problems
Solution Approach 1:
The sliding friction-based mechanical contact between wear plates and boom sections is replaced with a rolling contact system. The roller assembly converts the sliding friction mechanism into a rolling friction mechanism, eliminating wear and clearance development while maintaining the telescoping operation capability.
3Productivity
If conventional boom design is used, then the slag pusher machine can operate, but excessive stress is placed on actuators due to clearance between boom sections
Solution Approach 1:
The roller assembly acts as a mediator that distributes and equalizes the forces between the inner and outer boom sections. By providing a rolling contact interface, it eliminates the clearance-induced force imbalances that would otherwise concentrate excessive stress on the actuators, thereby reducing actuator load while maintaining operational productivity.
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 design significantly reduces maintenance time, enhances operational efficiency, and allows for direct replacement of conventional booms, improving the longevity and reliability of the slag door pusher machine.
Implementation Method 1
The roller pair assembly is attached to the outer boom segment such that its rollers protrude through openings formed in the outer boom segment to make contact with the inner boom segment
Data Source
AI summary
A slag pusher apparatus having a boom with a plurality of telescopingly engaged boom segments. Rollers are positioned between each boom segment to provide support for the boom segments and facilitate extension and retraction of the boom.