Screening Machine Strut Clamping Mechanism
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Solution Overview
Problem
Vibrating screening machines face issues with cross strut breakage due to high loads and localized weakening from welds, leading to downtime and increased weight from thick-walled struts, and clamping brackets experiencing transverse displacement under vibrations.
Innovation Solution
The use of detachable fastening anchors that clamp longitudinal struts to transverse struts from two directions, providing a secure and durable attachment without thermal stress, combined with adjustable fastening profiles for wear protection and modular design to enhance rigidity and reduce weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welded connections are used between longitudinal struts and transverse struts, then the connection is strong and rigid, but the transverse struts are locally weakened at the welds which promotes breakage
Solution Approach 1:
The patent introduces support brackets as intermediary elements between the longitudinal struts and transverse struts. These brackets distribute the connection forces over a larger area of the transverse strut, preventing localized stress concentration and weld-induced weakening. The brackets act as mediators that maintain connection strength while protecting the transverse strut integrity.
2Reliability
If the dimensions of cross braces are increased to reduce downtime, then the durability and load-bearing capacity improve, but the overall weight of the vibrating machine increases
Solution Approach 1:
The patent applies local reinforcement through support brackets positioned strategically at critical locations where longitudinal struts connect to transverse struts. Instead of uniformly increasing the dimensions of all cross braces throughout the machine, the local quality principle allows targeted strengthening only where needed, maintaining durability while minimizing overall weight increase.
3Reliability
If cylindrical transverse struts are used to avoid welding stresses, then thermal stress is eliminated, but the rigidity under loads is low requiring thick-walled struts which increase weight
Solution Approach 1:
The patent employs a composite structural approach by combining rectangular cross-section transverse struts (made from standard steel profiles) with support brackets. This composite construction achieves the stress resistance normally requiring thick-walled cylindrical struts, but with significantly reduced weight. The rectangular profile provides inherent rigidity while the brackets distribute loads to avoid stress concentration.
4Reliability
If clamping brackets are used to clamp longitudinal struts to transverse struts, then thermal stress is avoided, but the brackets are only clamped in one direction which allows transverse displacement under vibrations
Solution Approach 1:
The patent transitions from single-direction clamping to multi-directional clamping by designing support brackets that constrain the longitudinal struts in multiple directions. The brackets are configured with contact surfaces and fastening points that prevent not only vertical displacement but also transverse movement, thereby stabilizing the connection in three-dimensional space and eliminating the displacement problems under vibrational loads.
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 solution reduces the frequency of cross strut failures, maintains structural integrity under vibrations, and allows for flexible adaptation and reduced overall weight, while ensuring reliable attachment and protection from wear and tear.
Implementation Method 1
The longitudinal struts are clamped to the cross struts using detachable fastening anchors. The fastening anchors are clamped to the cross struts from two different directions in order to ensure that the longitudinal struts are securely seated on the cross struts even when a vibrating screening machine is in continuous operation.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Screening machine (1) for screening bulk materials and the like, comprising a housing (2) and two side walls (3, 4) on which a screen deck (5-7) is arranged, the screen deck having transverse struts (23) attached to the side walls and longitudinal struts (31) attached to the transverse struts, on which a screen lining (8) is interchangeably mounted. The longitudinal struts are clamped to the transverse struts from two different directions by means of releasable fastening anchors (9).