Trapezoidal Crusher Liner Segments for Diameter Tolerance Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current protective liners for crushers face challenges in precise assembly due to variations in crusher diameter caused by production tolerances or wear, leading to gaps or the need for segment cutting.
Innovation Solution
The use of trapezoidal-shaped liner segments that can be axially adjusted to compensate for diameter tolerances, allowing for precise fitting without cutting, by alternating long and short bases and utilizing movable segments with elongate slots for fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If rectangular liner segments are used to line the crusher housing, then the liner can be easily replaced when worn, but the segments do not precisely fit into the housing when diameter varies due to production tolerances or wear
Solution Approach 1:
The liner is divided into multiple segments that can be independently manufactured and replaced. Each segment is designed with specific geometric features (elongate slots, protrusions, recesses) that enable precise assembly while maintaining replaceability. The segmentation allows the liner to be reconstructed from modular parts, solving both the precision fitting issue and the ease of replacement requirement.
Solution Approach 2:
The liner segments are designed with movable features including elongate slots that allow axial movement and adjustment during assembly. The segments can be positioned dynamically to accommodate diameter variations, and once positioned, are secured through protrusions engaging with recesses in the housing. This dynamic adjustment capability enables precise fitting without compromising the ease of future replacement.
2Adaptability or versatility
If the circumference of the housing is larger than nominal value, then gaps remain between liner segments, but if the circumference is smaller, the segments must be cut to fit
Solution Approach 1:
The liner segments incorporate elongate slots that permit axial movement and adjustment during assembly. This dynamic positioning capability allows the segments to adapt to different circumferential dimensions. When the housing circumference varies from nominal, the segments can be shifted axially to compensate, eliminating gaps or the need for cutting while maintaining precise fit and assembly accuracy.
Solution Approach 2:
The design allows for parameter changes in the assembly configuration rather than changing the segments themselves. By adjusting the axial position of segments within the elongate slots, the effective circumferential length can be modified to match the actual housing diameter. This parameter adjustment approach enables the same standardized segments to adapt to various diameter tolerances without compromising assembly precision.
3Reliability
If liner segments are made hard and abrasion resistant, then they can withstand the crushing environment, but cutting the segments to size becomes difficult
Solution Approach 1:
The liner is segmented into standardized modules with predetermined dimensions and features. These standardized segments are manufactured to fit within specific tolerance ranges, eliminating the need for post-manufacturing cutting. The segmentation design allows the hard, abrasion-resistant material to be worked into standardized shapes that can be easily assembled without requiring difficult cutting operations on the final product.
Solution Approach 2:
The liner segments are pre-manufactured with all necessary features including elongate slots, protrusions, and recesses already integrated into the standardized design. This preliminary preparation of the segments with built-in assembly features eliminates the need for on-site cutting or modification. The segments are ready for direct assembly, making the manufacturing process easier despite the hard, abrasion-resistant material properties.
Data Source
AI summary
A crusher having a protective liner, the protective liner including a plurality of lining segments which are arranged circumferentially along an a of the crusher. At least some of the segments have a trapezoidal shape with two bases of different lengths arranged parallel to the circumferential direction of the wall and two non-parallel legs connecting the bases. Further, at least some of the segments are arranged along the circumference of the wall such that long and short bases of adjacent segments alternate, and wherein at least some of the segments are allowed to vary in their axial position with respect to adjacent segments to compensate for tolerances in diameter of the wall of the crusher.