Scaffolding Jack Base With Self-Aligning Screw Shaft
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional jack bases for construction scaffolding are difficult to install on inclined surfaces due to the screw shaft tilting, requiring manual adjustment of each screw shaft, which is labor-intensive and time-consuming.
Innovation Solution
A jack base with a base plate having a central hole, a rotatable screw shaft, and a swingable fixing bar with a tapered end and discharge grooves, allowing easy installation on various ground surfaces by embedding the fixing bar into the ground without manual vertical alignment of the screw shaft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the screw shaft is fixed perpendicular to the base plate, then the structure is simple and stable on horizontal surfaces, but the scaffolding cannot be installed on inclined surfaces because the screw shaft tilts
Solution Approach 1:
The screw shaft is made rotatable relative to the base plate through a hinge connection, allowing it to dynamically adjust its orientation. The fixing bar can also rotate within the base plate hole to align with the ground surface inclination. This dynamic capability enables the jack base to adapt to both horizontal and inclined surfaces without requiring multiple fixed-orientation components.
2Adaptability or versatility
If the screw shaft is made rotatable to accommodate inclined surfaces, then adaptability improves, but the screw shaft rotates to a lying state requiring manual vertical adjustment which is labor-intensive and time-consuming
Solution Approach 1:
The fixing bar automatically self-aligns to the ground surface inclination through its rotatable connection with the base plate. When the worker places the jack base on the ground, the fixing bar naturally rotates to match the surface angle, which in turn orients the screw shaft vertically through the hinge mechanism. This self-aligning feature eliminates the need for manual vertical adjustment of the screw shaft, making installation effortless even on inclined surfaces.
3Manufacturing precision
If manual vertical adjustment of multiple screw shafts is required, then installation precision can be maintained, but work time increases significantly and productivity decreases
Solution Approach 1:
The mechanical linkage between the fixing bar and screw shaft through the base plate creates a self-aligning system. When the fixing bar is inserted into the ground at any inclination, it automatically orients the screw shaft vertically without requiring worker intervention for adjustment. This maintains precise vertical alignment while eliminating the time-consuming manual adjustment process, thereby significantly improving installation productivity.
4Ease of operation
If the fixing bar is made swingable to enable self-alignment, then ease of operation improves, but the structure becomes more complex
Solution Approach 1:
The swingable fixing bar mechanism is integrated directly into the base plate structure, merging the alignment function with the existing base plate components. The fixing bar passes through a hole in the base plate and connects to the screw shaft assembly, creating a unified self-aligning mechanism. This integration adds minimal structural complexity while providing automatic alignment capability that greatly simplifies installation operation.
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
Enables quick and effortless installation of scaffolding on both horizontal and inclined surfaces, reducing labor effort and installation time while maintaining stability.
Implementation Method 1
a plurality of discharge grooves 52 extending vertically and spaced apart along the circumferential direction are formed in the tapered portion 51 so that soil or concrete powder of a ground surface 1 is discharged as the fixing bar 50 is driven into the ground surface 1
Data Source
AI summary
The invention is a jack base 10 of construction scaffolding which includes a base plate 20 that is fixed to the ground surface 1 and has a hole 21 formed through the center thereof; a screw shaft 30 whose lower end is engaged in the hinges 22,31 on opposite side of the periphery of the hole 21 on the base plate 20 and whose upper end is connected to the lower end of the vertical pipe 4; a support member 40 that is screwed to the screw shaft 30 and supports the vertical pipe 4 of the scaffolding 3; and a fixing bar 50 that penetrates the hole 21 in a swingable manner and is fixed by being embedded in a ground surface 1.