Crusher Jacket Fastening Structure for Simple Secure Assembly
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Solution Overview
Problem
Existing crusher jackets for cone and gyratory crushers require complex assembly, involve numerous parts, and lack secure fastening, making them difficult to install and maintain.
Innovation Solution
A crusher jacket design with radially outward fastening projections, spaced apart circumferentially, and a crusher top with aligned supports and passages, allowing for simple assembly and disassembly using clamping elements that securely fasten to the crusher head.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a segmented clamping ring connection is used, then the crusher jacket can be securely fastened, but the assembly becomes complex and involves a high number of parts
Solution Approach 1:
The crusher jacket is divided into a base part with support section and a separate clamping ring that segments the fastening function. The base part contains integrated fastening projections with spacing areas, while the clamping ring provides the clamping force through multiple clamping points, separating the structural support function from the fastening function.
Solution Approach 2:
The fastening projections are integrally formed with the base part of the crusher jacket, merging the support section and fastening elements into a single component. This eliminates the need for separate fastening brackets or attachments, reducing the total part count while maintaining secure fastening capability.
2Reliability
If threaded connections with screw receptacles are used, then the crusher jacket can be fastened to the crusher head, but the threaded connection is susceptible to damage and secure fastening cannot always be guaranteed
Solution Approach 1:
The threaded connection elements are extracted from the crusher jacket design and replaced with clearance-based fastening projections. The fastening projections engage with corresponding features in the crusher head through clearance fit rather than threaded engagement, eliminating the vulnerable threaded receptacles while maintaining secure fastening through the clamping ring.
3Shape
If the radial extent of the clamping surface matches the radial extent of the fastening projections, then the structure is compact, but force transmission is not optimized
Solution Approach 1:
The clamping surface is designed with varying radial extent in different circumferential zones. In the load-bearing areas, the clamping surface extends radially beyond the fastening projections to provide enhanced force transmission and load distribution. In non-critical areas, the radial extent is reduced to maintain structural compactness. This localized variation optimizes both force transmission and compactness.
Data Source
Figure 1
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AI summary
The invention relates to a crushing jacket (20) of a cone and/or gyratory crusher for mounting within a crusher upper part (30), wherein the crushing jacket (20) has a central longitudinal axis (M) extending in the longitudinal direction of the jacket, wherein the crushing jacket (20) has a material feed (24.1) on its upper side (O) and a material discharge area (24.2) on its opposite lower side (U), and wherein the crushing jacket (20) has a base part (21) with an outer clamping surface (28).To reduce the number of parts and the assembly effort, the invention provides that the base part (21) has a support section (25) with radially outwardly projecting fastening projections (26), wherein the fastening projections (26) are spaced apart from each other in the circumferential direction of the support section (25) by means of spacing areas, wherein at least one clearance is provided in each of the spacing areas, which allows passage in the direction of the central longitudinal axis (M) from the underside (U) towards the top (O) and wherein the radial extent of the clamping surface (28) outwards is at least partially greater than the radial extent of the fastening projections (26) outwards.