Sieve Scraper Carrier Plate Removal Mechanism
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Solution Overview
Problem
The existing classification grates require extensive and costly preparations, including scaffolding, for adjusting or replacing scrapers due to limited access and complex maintenance procedures, which complicates the process of adjusting or replacing scrapers in difficult-to-reach areas.
Innovation Solution
A classification grate design featuring a detachable connection system with a first connecting device that allows the carrier plate with scrapers to be moved away from the screen shafts and towards the base plate, enabling lateral removal and adjustment without the need for scaffolding, using a second connecting device for height adjustment and assembly elements like rails for precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the carrier plate with scrapers is fixed to the machine frame, then the structural stability is improved, but the ease of repair deteriorates due to limited access and complex maintenance procedures
Solution Approach 1:
The connection system is divided into two separate devices: a first connecting device for attaching the carrier plate to the machine frame, and a second connecting device for lowering the carrier plate during maintenance. This segmentation allows the plate to remain securely fixed during operation while enabling easy removal when needed.
Solution Approach 2:
The connection system transitions from a static fixed state during operation to a dynamic removable state during maintenance. The two-device connection system enables this dynamic transition, allowing the carrier plate to be securely attached when in use and easily detached when maintenance is required.
2Ease of operation
If scaffolding is erected for scraper adjustment, then the ease of operation is improved, but the device complexity and loss of time increase
Solution Approach 1:
The second connecting device extracts the carrier plate from its installed position and lowers it to the base plate, removing the need for scaffolding and complex maintenance preparations. This extraction allows maintenance personnel to access and adjust scrapers from a safe, accessible position.
Solution Approach 2:
The second connecting device acts as an intermediary mechanism between the carrier plate and the base plate, facilitating the lowering and raising of the plate during maintenance operations. This intermediary device eliminates the need for scaffolding by providing a controlled method for plate removal and reinstallation.
3Ease of repair
If the carrier plate is lowered to the base plate for maintenance, then the ease of repair is improved, but the use of energy increases due to the movement mechanism
Solution Approach 1:
The second connecting device is pre-positioned and ready to receive the carrier plate before maintenance is needed. This preliminary preparation allows for quick and efficient plate removal without requiring complex energy-intensive lifting mechanisms during the maintenance process.
Solution Approach 2:
The connection system is designed to move the carrier plate vertically between the screen shafts and the base plate, utilizing gravitational potential energy differences. The plate can be lowered to the base plate level where maintenance personnel can easily access it, and then raised back to its operating position using the same connection mechanism.
Data Source
Figure 1~2
Figure 3~5
Figure 6~8
AI summary
The invention relates to a classifying grate (1) with a machine frame (2) standing on a base plate (3) and a plurality of screen shafts (4) provided with discs (9), which are rotatably mounted one behind the other in a longitudinal direction (5) of the machine frame (2), wherein each screen shaft (4) is assigned a support plate (7) which is arranged vertically offset to the corresponding screen shaft (4) and which is equipped with scrapers (8) which extend into spaces (10) formed by adjacent discs (9) or star arms of the assigned screen shaft (4).A first connecting device (11) is connected to the machine frame (2) via a detachable connection (12) and supports at least one of the support plates (7), wherein a second connecting device (29) is attached to the machine frame (2), which, after the detachable connection (12) is released, supports the first connecting device (11) and is designed to move the first connecting device (11) in a direction (30) pointing away from the sieve shafts (4) and towards the base plate (3).