Pivoting Crushing Screen with Walkable Platform
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Solution Overview
Problem
Existing crushing sieves require complex and time-consuming maintenance and repair processes, as accessing the rotor and tools for maintenance involves disassembling the crushing screen, which is often secured with numerous screws, posing safety risks and inefficiencies.
Innovation Solution
A pivoting portion of the crushing sieve that can be pivoted into a holding position, forming an accessible work platform, allows for single-operation access to the rotor and tools, enabling easy maintenance, repair, or replacement while keeping the device assembled, with hydraulic or spindle-driven displacement of housing parts and quick-release bolts for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the crushing screen is securely attached to the housing with numerous screws, then the screen remains stable during operation, but maintenance and repair become complex and time-consuming
Solution Approach 1:
The crushing screen is divided into multiple segments that can be independently removed. The screen comprises a first screen segment and a second screen segment that can be separated from each other, allowing maintenance personnel to access the rotor without removing the entire screen assembly. This segmentation enables quick removal of only the necessary screen portion while maintaining the stability of the remaining screen during operation.
Solution Approach 2:
The screen holder is designed with movable elements that allow dynamic adjustment between a closed position (during operation) and an open position (during maintenance). The first and second housing parts can be moved relative to each other to transition between operational and maintenance states, enabling quick access to the rotor without complete disassembly.
2Ease of operation
If the housing is opened for maintenance access, then the rotor becomes accessible, but the discharge chute becomes exposed creating safety risks
Solution Approach 1:
A bridge element is introduced as an intermediary component that spans between the first and second housing parts. This bridge element acts as a safety barrier covering the discharge chute when the housing is opened for maintenance, preventing accidental falls while still allowing access to the rotor. The bridge element remains in place during maintenance operations, eliminating the safety hazard without restricting rotor accessibility.
3Ease of operation
If the crushing screen is completely removed for maintenance, then full access to the rotor is achieved, but the maintenance process becomes time-consuming
Solution Approach 1:
The screen is segmented into removable portions and fixed portions. Only the necessary screen segments need to be removed for maintenance, while the remaining segments stay in place. This selective removal significantly reduces disassembly time compared to removing the entire screen, while still providing adequate access to the rotor for maintenance activities.
Solution Approach 2:
The screen segments are pre-configured with quick-release mechanisms and positioning features that facilitate rapid removal and reinstallation. The segmented design allows maintenance personnel to quickly detach only the required portions without complex disassembly procedures, minimizing maintenance time while ensuring proper reassembly.
Data Source
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AI summary
A crushing screen for a device for crushing piece goods, with a sliding part (12) and a pivoting part (14) which can be pivoted from a screen position to a holding position, is characterized in that the pivoting part (14) has a surface (34) which is walkable in the holding position and serves as a working platform, and that a projection (36) is formed on the pivoting part (14) which can slide along a guide (38) formed on a housing part (8) when pivoting from the screen position to the holding position.