Slipform Casting Embedding Reinforcements Before Compaction
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Solution Overview
Problem
Existing slipform casting methods require additional reinforcements and parts to be manually added after concrete product compaction, which is time-consuming and limited by the casting mold's design, restricting the integration of reinforcements and parts, especially for pre-tensioning strands.
Innovation Solution
A method and apparatus for embedding reinforcements and parts into the concrete mass before final compaction during the slipform casting process, allowing adjustable orientation and partial embedding through a segmented mold, enabling efficient integration of reinforcements and other structural elements directly into the casting process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If reinforcements and parts are manually added after concrete product compaction, then the casting mold design is simple, but the manufacturing process is time-consuming and productivity is reduced
Solution Approach 1:
The patent applies preliminary action by embedding reinforcements and parts into the concrete mass before final compaction occurs. The embedding device introduces these elements during the casting process while the concrete is still in a workable state, eliminating the need for time-consuming manual addition after compaction. This resolves the contradiction by maintaining simple mold design while significantly improving manufacturing speed through advance preparation of reinforcement placement.
Solution Approach 2:
The patent introduces an embedding device as an intermediary mechanism between the concrete mass and the reinforcements/parts. This device facilitates the integration of reinforcements during the casting process itself, acting as a mediator that enables automated or semi-automated placement without complicating the fundamental mold design. The intermediary device resolves the contradiction by providing a efficient method for reinforcement integration while keeping the mold structure relatively simple.
2Device complexity
If reinforcements are manually added after compaction, then the casting process is simple, but the attachment and alignment of parts is limited
Solution Approach 1:
By performing reinforcement embedding before final compaction, the system establishes precise positioning while the concrete is still pliable. The embedding device can accurately place reinforcements at predetermined locations and orientations, and the subsequent compaction process secures them in place. This preliminary action enables superior alignment precision compared to post-compaction manual addition, while the overall process remains relatively simple.
Solution Approach 2:
The patent exploits parameter changes in the concrete material - specifically its transition from a workable, pliable state during casting to a rigid, fixed state after compaction. During the workable phase, reinforcements can be easily positioned and adjusted to precise alignments. After compaction, the concrete hardens and locks the reinforcements in their predetermined positions. This parameter change enables high manufacturing precision without significantly increasing device complexity.
3Productivity
If reinforcements are embedded before final compaction, then productivity and attachment quality improve, but the casting process becomes more complex
Solution Approach 1:
The patent merges the reinforcement embedding operation with the existing compaction process. The embedding device is integrated into the compaction apparatus, allowing both functions - embedding reinforcements and compacting the concrete - to occur in sequence without requiring separate equipment or operations. This merging approach improves productivity by eliminating separate manual steps while limiting the increase in overall device complexity through functional integration.
Solution Approach 2:
The compaction device is designed with multi-functionality, serving both to compact the concrete mass and to embed reinforcements within it. By making the compaction apparatus universal - capable of performing both compaction and embedding functions - the system achieves improved productivity without proportionally increasing device complexity. The same mechanical system performs multiple operations, resolving the contradiction between enhanced productivity and device complexity.
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 approach significantly speeds up the manufacturing process by embedding reinforcements before final compaction, ensuring better attachment and alignment of parts within the concrete product, enhancing the structural integrity and reducing manual post-processing steps.
Implementation Method 1
The compacting of the concrete product to be cast is achieved by vibrating and/or leveling motion of the side and top plates
Implementation Method 2
feed screws which feed screws extrude the concrete mix to a slipform casting mold
Implementation Method 3
The casting machine moves along the casting bed driven by reaction force from the feed screws extruding the concrete mass
Data Source
Figure 1~2
Figure 3~4D
AI summary
Method and apparatus (1; 21) for casting prefabricated concrete products with a substantially horizontal slipform casting process, where the concrete mass is fed in at least one feeding stage (2; 22, 23) to a slipform casting mold (4, 5, 6) compacting and defining the product to be cast, wherein at least one part (10; 25) is embedded in the concrete mass after the at least one concrete mass feeding stage (2; 22, 23) and before the final compaction of the upper surface of the product to be cast.