Movable Support Frame for Railway Crossing
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Solution Overview
Problem
Existing support frames for construction crossing over an existing railway line face challenges in assembly/disassembly, precision adjustment, and minimizing impact on the existing line, leading to inefficiencies and potential damage.
Innovation Solution
A prefabricated movable and adjustable support frame featuring a rail track, adjustable support with pillar assemblies, slideway stringer, support beam, hinge, brake device, and traction mechanism, allowing for fully prefabricated assembly/disassembly, sliding along the existing line, and flexible height adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional steel or concrete support frames are used for construction crossing over existing railway lines, then the load-bearing capacity and structural strength are sufficient, but the assembly and disassembly processes are complex and time-consuming
Solution Approach 1:
The support frame is divided into multiple modular components including pillar assemblies, cross beams, and support beams that can be independently assembled and disassembled. Each pillar assembly consists of an outer column, inner column, and connection components, allowing for rapid assembly through simple connection operations rather than complex welding or bolting processes.
Solution Approach 2:
The support frame incorporates adjustable height mechanisms through telescopic pillar assemblies where inner columns can slide within outer columns. This dynamic adjustment capability allows the support frame to be quickly reconfigured for different construction requirements without complete disassembly, significantly improving assembly efficiency while maintaining structural integrity.
2Stability of the object's composition
If traditional fixed support frames are used, then structural stability is maintained, but construction accuracy adjustment is inconvenient
Solution Approach 1:
The pillar assemblies feature telescopic inner columns that can slide vertically within outer columns, enabling precise height adjustment of the support frame. This dynamic adjustment mechanism allows construction workers to fine-tune the position and elevation of the support frame to achieve accurate alignment with construction requirements while maintaining overall structural stability through the rigid connection of modular components.
3Reliability
If traditional support frames are used, then the existing line is protected during construction, but the impact and vibration on the existing line cannot be sufficiently reduced
Solution Approach 1:
The modular component structure allows the support frame to be assembled from standardized pieces that can be precisely positioned. This segmentation enables the construction of a more uniform and evenly distributed support structure, reducing localized stress concentrations and minimizing impact and vibration transmission to the existing railway line while maintaining adequate protection.
4Productivity
If fully prefabricated support frames are used, then assembly speed is improved, but the complexity of the prefabricated components increases
Solution Approach 1:
The support frame is segmented into standardized modular components with simple connection interfaces. Each pillar assembly, cross beam, and support beam is a self-contained module with standardized connection points, reducing the complexity of individual components while enabling rapid assembly through simple connection operations. The modularity allows components to be pre-fabricated off-site and quickly assembled on-site without requiring complex field fabrication operations.
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
The support frame enables quick and efficient assembly/disassembly, precise position adjustment, and reduced impact on the existing line, improving construction efficiency and safety while facilitating smooth railway project progression.
Implementation Method 1
a lower end of the outer column is connected to a lower rail wheel that can roll on the rail track of the existing line
Implementation Method 2
the inner column is inserted into the outer column and can slide vertically inside the outer column
Implementation Method 3
the inner columns adjacent to each other and the outer columns adjacent to each other along the rail track of the existing line are connected by hinged nodes through a cross brace assembly
Implementation Method 4
the brake device is installed on a side of the outer column of the adjustable support
Data Source
AI summary
Provided is a prefabricated movable and adjustable support frame for construction crossing over an existing line, and a method of installing the same used in field of railway construction engineering, the support frame including a rail track of the existing line, an adjustable support, a slideway stringer, a support beam, a hinge, a brake device, and a traction mechanism, where the adjustable support includes 4 pillar assemblies, each of the pillar assemblies includes an outer column and an inner column, the inner column is inserted into the outer column, a lower end of the outer column is connected to a lower rail wheel, an upper end of the inner column is connected to an upper pulley, the inner columns adjacent to each other and the outer columns adjacent to each other along the rail track of the existing line are connected by hinged nodes through a cross brace assembly.