Internal Clamping for Screening Device Cross Struts
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Solution Overview
Problem
Existing screening devices face challenges with high vibration loads and pressure forces causing weld weaknesses, leading to complex and labor-intensive maintenance due to protruding cross struts that require removal through side walls, which is inefficient and space-consuming.
Innovation Solution
The cross struts are internally clamped to the side walls using a clamping device, allowing for easier assembly and disassembly without removing the screen covering or longitudinal beams, and can be dismantled within the housing, reducing space requirements and maintenance time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If cross struts are arranged to protrude through side walls for clamping and screwing, then connection strength is improved, but maintenance complexity and labor intensity increase significantly
Solution Approach 1:
Instead of clamping cross struts from the outside by threading them through side walls, the invention inverts the approach by clamping them from the inside. The clamping device is arranged on the inner side of the side part, allowing cross struts to be secured without protruding through the housing walls, thereby simplifying maintenance operations.
Solution Approach 2:
The clamping device features homogeneous clamping surfaces that contact the cross strut along an extended area. This distributed clamping approach maintains connection strength while enabling easier access for maintenance, as the uniform pressure distribution prevents localized stress concentrations that would complicate repairs.
2Strength
If cross struts protrude through side walls for external clamping, then assembly strength is improved, but assembly and disassembly time increase
Solution Approach 1:
The invention inverts the traditional external clamping approach by implementing internal clamping. The clamping device is positioned on the inner side of the side part, allowing cross struts to be secured from within the housing. This eliminates the need to thread components through side walls during assembly and disassembly, significantly reducing the time required for maintenance operations while maintaining connection strength.
Solution Approach 2:
The clamping device is pre-positioned on the inner side of the side part during manufacturing, so that during maintenance operations, only the clamping mechanism itself needs to be operated rather than threading entire cross strut assemblies through the housing. This preliminary arrangement of clamping components dramatically reduces assembly and disassembly time.
3Reliability
If cross struts are clamped externally through side walls, then connection reliability is improved, but space requirements and environmental constraints increase
Solution Approach 1:
The invention inverts the clamping approach from external to internal. By positioning the clamping device on the inner side of the side part rather than requiring external access through side walls, the design eliminates the need for additional lateral space during assembly and maintenance operations, making the screening device more compact and adaptable to space-constrained environments.
Solution Approach 2:
The clamping device and cross struts are arranged within the internal volume of the housing, nesting the clamping mechanism inside the existing structure rather than requiring external protrusions. This nested arrangement maintains connection reliability while minimizing the overall footprint and space requirements of the screening device.
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
Sieving device for sieving bulk materials comprising: - a housing (3) having two side parts (2), - at least one crossbar (4) connecting the two side parts (2), which is designed to receive a sieve lining (5) and - at least one clamping device (7) connecting the at least one crossbar (4) supporting the sieve lining (5) with the side parts (2), wherein the at least one clamping device (7) is arranged on an inner side of one of the two side parts (2), which inner side faces the other side part (2) of the at least two side parts (2).