Ground Peg With Continuous Welded Thread
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ground pegs are labor-intensive and expensive to produce, prone to failure in hard subsoil due to torsional stiffness and weld seam weaknesses, and have inconsistent thread pitches leading to jamming and breakage.
Innovation Solution
A ground peg with a continuous external thread formed from a sheet metal strip welded onto a steel tube, featuring a constant pitch and slope, and a method for automated production that minimizes manual labor, ensuring precise thread formation and weld quality without a weld seam between sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the external thread is wound and welded onto the circumferential surface, then the ground peg can be screwed into the ground, but dimensional deviations result in jamming or locking of the thread, and hand welding makes production labor-intensive and expensive
Solution Approach 1:
The patent replaces the mechanical hand-welding process with automated welding technology, substituting manual operations with automated systems that can consistently produce precise welds without human labor
Solution Approach 2:
The patent implements self-adjusting thread formation where the sheet metal strip is automatically formed and positioned to create the external thread profile, with the welding process self-regulating to maintain consistent pitch and engagement
2Shape
If the pitch of the lower tapered section differs from the pitch of other sections, then the thread can accommodate the conical shape, but this inconsistency causes jamming or locking of the thread during assembly
Solution Approach 1:
The patent applies local quality by forming the external thread with uniform pitch characteristics along the entire length of the ground peg, including the conical section, rather than varying the pitch to match the changing diameter, thereby maintaining thread engagement consistency while accommodating the conical shape through other means
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 solution results in a high-strength, cost-effective ground peg capable of withstanding high torsional loads in hard subsoil without breakage, with improved precision and reduced production costs through automated processes.
Implementation Method 1
welded onto an external surface of the ground peg by means of a continuous or regularly interrupted fillet weld
Data Source
AI summary
The invention relates to a ground peg (10) which is made from a steel tube (11) and comprises an upper cylindrical section (12), a lower section (16) that tapers towards the bottom to form a tip (14), and an external thread (26) that extends along at least part of the lower section (16) and is formed from a continuous sheet metal strip (28) welded onto an external surface (32) of the ground peg (10) by means of a continuous or regularly interrupted fillet weld (34). The external thread (26) has a nearly constant pitch (S) and slope (a) relative to a longitudinal axis (40) of the ground peg (10) along the entire length of the external thread (26). The invention further relates to a method or producing such a ground peg (10). In said method, the external thread (26) is laterally fed to the external surface (32) of the rotating steel tube as an elongate sheet metal strip (28) and is welded onto said external surface (32), the steel tube (11) being moved relative to the feeding point of the sheet metal strip (28) at a regular advance (V) in the longitudinal direction of the steel tube (11). The invention finally relates to a device for producing such a ground peg (10). Said device comprises a mechanism for clamping and rotating the steel tube as well as a mechanism (44) for feeding the sheet metal strip (28) to the external surface (32) of the steel tube (11) such that the sheet metal strip (28) tangentially rests there against.