Belt Stripper Module With Height-Adjustable Carrier
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Solution Overview
Problem
Conventional belt-stripper systems face challenges with maintenance, as the razor-sharp carbide cutting edges wear down quickly, leading to belt damage during return travel and require precise adjustments, which are difficult to perform safely and efficiently, especially when the cutting edges are completely worn out, necessitating frequent module replacements and potentially causing operational interruptions.
Innovation Solution
A belt-stripper module with a height-adjustable system carrier, featuring a base, cutting-edge carrier, and a stripping lamella forming an obtuse angle, equipped with a torsion spring and a second articulation for precise orientation, along with a spring-angle-measuring mechanism and fixed stop to prevent over-advance, allowing for external installation and adjustment without specialized skills, and a measuring and sensing mechanism to compensate for belt unevenness and wear, ensuring safe operation and extended service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the carbide cutting edge is made razor-sharp for effective stripping, then the stripping performance is improved, but the belt is damaged during return travel and maintenance operations
Solution Approach 1:
The cutting-edge carrier is designed to be rotatable about the longitudinal axis, allowing dynamic adjustment of the carbide edge orientation. During normal operation, the edge is positioned at an optimal angle for stripping performance. During return travel and maintenance, the carrier can be rotated to retract or reposition the sharp edge, preventing it from cutting into the belt or causing damage during installation/removal operations.
Solution Approach 2:
The system includes a return-travel protection mechanism that is activated before the belt reverses direction. This preliminary action positions the carbide edge in a safe configuration before the harmful return travel begins, preventing the sharp edge from damaging the belt during the unavoidable return journey.
2Productivity
If the carbide cutting edge is made razor-sharp for effective stripping, then the stripping performance is improved, but the module replacement and maintenance become difficult and require specialized skills
Solution Approach 1:
The belt stripper is divided into modular components: the base, the rotatable cutting-edge carrier, and the stripping lamella. This segmentation allows the cutting-edge carrier to be independently adjusted or replaced without affecting the entire system. The modular design enables maintenance personnel to work with individual components rather than the complete assembly, simplifying repair operations.
Solution Approach 2:
The rotatable cutting-edge carrier can be manually positioned to a maintenance-friendly orientation, allowing personnel to safely approach and service the sharp carbide edge without risk of cutting. This dynamic repositioning capability eliminates the need for specialized safety equipment or extensive training, as any personnel can rotate the carrier to a safe position before performing maintenance.
3Reliability
If the belt stripper springs away and back onto the belt during operation, then belt defects and deposits are cleared, but precise adjustment is required to maintain consistent performance throughout the wear period
Solution Approach 1:
The rotatable cutting-edge carrier provides an additional degree of freedom for adjustment. Beyond the vertical positioning of the stripping lamella, the carrier can be rotated about the longitudinal axis to optimize the angle of the carbide edge relative to the belt surface. This dynamic angular adjustment compensates for belt unevenness and wear variations, maintaining consistent cleaning performance without requiring complex multi-axis adjustment mechanisms.
Solution Approach 2:
The system allows independent adjustment of two critical parameters: the vertical position of the stripping lamella and the rotational angle of the cutting-edge carrier. By changing these parameters, operators can optimize the stripping action for different belt conditions, wear stages, and operational requirements, maintaining reliable cleaning function throughout the carbide edge wear period.
4Ease of manufacture
If the system carrier is fixed for simple construction, then the manufacturing cost is reduced, but the ability to adapt to different belt conditions and unevenness is limited
Solution Approach 1:
The system carrier incorporates height-adjustable mechanisms that allow vertical positioning of the stripping modules. This dynamic height adjustment enables the fixed-carrier design to adapt to different belt positions, tensions, and unevenness conditions. The carrier remains structurally simple and fixed in location, but the adjustable module heights provide the necessary versatility for various operational conditions.
Solution Approach 2:
The height-adjustable feature is implemented at the module level rather than requiring a complex adjustable carrier. Each stripping module can be independently positioned vertically, allowing the simple fixed carrier to support multiple height configurations. This segmentation of the adjustment function maintains carrier simplicity while providing adaptability.
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 enables straightforward, cost-effective, and safe installation and maintenance of belt-stripper systems, preventing belt damage during return travel and extending the service life by maintaining uniform module alignment and adjusting for belt unevenness, reducing the need for frequent module replacements and ensuring reliable operation without manual adjustments or high-outlay safety equipment.
Implementation Method 1
a first articulation, of which the axis of rotation runs transversely to the running direction of the belt, with a torsion spring, which connects the base and stripping body
Implementation Method 2
a second articulation with a bushing, in which the cutting-edge carrier is mounted in a rotatable manner, the axis of rotation of said second articulation running longitudinally in relation to the running direction of the belt, and said second articulation orienting the cutting-edge carrier on the running belt such that the stripping edge butts always flatly against the belt
Implementation Method 3
Long service lives are also achieved by the stripping lamellae having wear-resistant carbide cutting edges which wear down very slowly by abrasion, a razor-sharp cutting edge being the result
Implementation Method 4
Once a belt-conveying installation has been switched off, the conveying belt can often be seen to run back a little, this being caused for example by the conveying belt, which expands elastically during operation, contracting again when the installation is at a standstill
Data Source
AI summary
A belt stripper module for a stripping device for the return region of conveyor belts, which module is mounted as one of a plurality on a height-adjustable system carrier.