Adjustable Claw Posts for Guardrail Assembly
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Solution Overview
Problem
Existing systems for assembling guardrails on slab floors in construction sites are time-consuming and labor-intensive, requiring drilling holes in concrete for fixation, which increases costs and reduces productivity.
Innovation Solution
The use of posts with adjustable claws and quick-fit grids that can be assembled without drilling, allowing for rapid and secure installation and removal of guardrails, accommodating various slab and edge beam sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional bolted fixation systems are used to assemble guardrails on slab floors, then the guardrails meet safety standards for structural stability, but the assembly process becomes time-consuming and labor-intensive requiring drilling holes in concrete
Solution Approach 1:
The fixation system is divided into separate functional components: a base plate for positioning, adjustable claws for gripping, and a spindle mechanism for operation. This segmentation allows each component to perform its specific function efficiently, enabling quick assembly without drilling while maintaining structural stability through the coordinated action of these modular elements.
Solution Approach 2:
The claws are designed to be adjustable and operable through a spindle mechanism, allowing them to dynamically adapt to different slab thicknesses and positions. The claws can be opened and closed through rotational movement of the spindle, enabling rapid fixation without the need for permanent drilling, thus reducing assembly time while maintaining reliable structural attachment.
2Reliability
If traditional bolted fixation systems are used to assemble guardrails on slab floors, then the guardrails meet safety standards for structural stability, but drilling holes in concrete increases costs and reduces productivity
Solution Approach 1:
The traditional mechanical drilling and bolting system is replaced with a爪-based gripping mechanism operated by a spindle. This substitution eliminates the need for drilling holes in concrete, significantly reducing assembly time and labor costs while maintaining structural stability through the claw gripping action. The new mechanical system achieves fixation through friction and geometric interlocking rather than penetration and threading.
Solution Approach 2:
The system changes the fixation parameter from hole depth and bolt tension to claw grip force and spindle rotation angle. This parameter change allows for adjustable fixation strength that can be optimized for different slab conditions without requiring permanent modifications to the concrete structure, thereby improving productivity while maintaining reliability.
3Reliability
If posts are fixed directly to the slab or edge beam through anchors or screws, then the guardrail system achieves secure attachment, but the assembly and disassembly process becomes complex and time-consuming
Solution Approach 1:
The post fixation system is designed to be self-servicing through the spindle and crank mechanism. The user simply rotates the spindle to open or close the claws, and the system automatically adjusts to the required position and secures itself without requiring specialized tools or complex procedures. This self-service mechanism dramatically simplifies assembly and disassembly operations while maintaining secure attachment through the engineered claw geometry.
Solution Approach 2:
The fixation mechanism transitions from static bolted connections to dynamic claw gripping that can be rapidly opened and closed through spindle rotation. This dynamic operation allows for quick assembly and disassembly while maintaining attachment security through the mechanical interlocking of the claws with the slab or edge beam. The system can be easily positioned and secured at any stage of construction.
4Reliability
If vertical poles with coupling eyes and L support supports are inserted into protection grids, then the guardrail system achieves structural integrity, but the installation requires precise positioning and multiple fastening operations
Solution Approach 1:
The base plate, claws, spindle mechanism, and positioning features are merged into a single integrated post assembly unit. This consolidation eliminates the need for separate components and multiple fastening operations, as the entire assembly is positioned and secured through a single rotational action of the spindle. The integrated design maintains structural integrity while dramatically reducing assembly complexity.
Solution Approach 2:
The post assembly with adjustable claws serves multiple functions: positioning, gripping, securing, and adjusting to different slab thicknesses. This multi-functionality is achieved through a single integrated mechanism that replaces multiple separate components and operations, thereby reducing assembly complexity while maintaining structural integrity across different application conditions.
Data Source
AI summary
Grids and posts with adjustable claws for use in the assembly of guardrails in construction work, serving as temporary peripheral protection railings on slab floors. This system avoids the time and high labor costs of drilling holes in concrete to fix support structures for various grid models. The post attachment system ensures safe assembly and disassembly, with a fast and reliable mechanism for opening and closing the claws. The invention includes grids with quick-fit rings and posts with adjustable claws, which operate through a spindle with a crank. The claws have a large spacing capacity between their lower and upper parts, and the posts are fixed to slabs or edge beams by the pressure applied when closing the claws. The grid support design allows for easy, secure placement and removal of grids, significantly increasing productivity.