Formwork Locking Arrangement with Partial Block Position
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Solution Overview
Problem
Existing formwork elements in tunnel construction face challenges in utilizing residual material flow from supply lines after closing the blocking arrangement, leading to unnecessary disposal and increased costs due to unused filling material.
Innovation Solution
A formwork element with a blocking arrangement featuring a third operating position that partially blocks the passage, allowing remaining material flow to be redirected into the formwork element, utilizing a sliding element to press the material through the supply line and ensuring the sliding element gets caught, thus preventing it from entering the formwork, allowing the material to be reused.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the blocking arrangement is closed to prevent material leakage, then the formwork element is sealed, but the remaining material in the supply line must be disposed of unused
Solution Approach 1:
The blocking element is divided into multiple sections (first section with opening, second section blocking the passage, third section with retaining element) that can be positioned at different locations along the passage to create multiple operating positions, enabling selective material transfer while maintaining sealing
Solution Approach 2:
The blocking arrangement is designed to be dynamically adjustable between different operating positions (open, partially blocked, closed) along the passage, allowing the system to adapt its sealing and material transfer characteristics based on operational requirements
2Productivity
If the blocking arrangement is kept open to allow material flow, then the formwork element can be charged, but material may leak when not in use
Solution Approach 1:
The blocking element can be positioned in advance at appropriate locations along the passage to prepare the system for either charging or sealing operations, preventing material leakage before it occurs by establishing the blocking position proactively
Solution Approach 2:
The blocking element acts as an intermediary between the supply line and formwork element, controlling material flow by being positioned at different locations along the passage to either allow or prevent material transfer
3Loss of substance
If a sliding element is pressed through the supply line to transfer material, then residual material can be utilized, but the sliding element may enter the formwork
Solution Approach 1:
The third section of the blocking element with the retaining element converts the potential harm of the sliding element entering the formwork into a benefit by capturing the sliding element and using it to push residual material into the formwork, then preventing the sliding element from entering the formwork cavity
Solution Approach 2:
The retaining element extracts or removes the sliding element from the material flow path after it has served its purpose of pushing residual material into the formwork, preventing the sliding element from entering the formwork cavity
Data Source
Figure 1
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AI summary
The invention relates to a blocking assembly (1), comprising a passage (2) for a material flow, in which passage (2) a blocking element (3) having three segments (4, 5, 6) is arranged, which three segments (4, 5, 6) can be inserted into the passage (2) in three operating positions (BS1, BS2, BS3), wherein the first segment (4) completely opens the passage (2) in a first operating position (BS1), the second segment (5) completely closes the passage (2) in a second operating position (BS2), and the third segment (6) partially blocks the passage (2) in a third operating position (BS3).