Crusher Mantle Lifting Device With Integrated Locking
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Solution Overview
Problem
Current methods for lifting crusher mantles are unsafe and time-consuming, particularly due to the lack of a locking system for lifting chains and the need for visual inspection of welds, which poses safety risks and inefficiencies in installation and removal processes.
Innovation Solution
A crusher mantle lifting device with integrated locking portions that can be pressed into place using two different pressing means, providing increased safety and efficiency, and featuring attachment elements with lifting portions and tightening means to secure the mantle during lifting, eliminating the need for separate locking solutions and reducing the risk of accidents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If welded lifting lugs are used to attach lifting chains to the mantle, then the mantle can be lifted, but visual inspection of welds is required which is time-consuming and poses safety risks
Solution Approach 1:
The lifting device is segmented into separate components: attachment elements with integrated locking portions that can be independently attached to the mantle surface without welding. The locking portions are separate from the lifting chains, allowing independent inspection and attachment.
Solution Approach 2:
The attachment elements with locking portions are designed as disposable or easily replaceable components that do not require permanent attachment to the mantle. They can be attached and removed multiple times without compromising safety or requiring inspection of permanent joints.
2Device complexity
If lifting chains without a locking system are used, then the structure is simpler, but safety risks increase due to lack of secure attachment
Solution Approach 1:
The locking portion is integrated into the attachment element itself, merging the attachment function and locking function into a single component. This eliminates the need for separate locking mechanisms while maintaining safety.
Solution Approach 2:
The attachment element with integrated locking portion is designed to be self-securing through pressing means that engage the locking portion with the mantle surface. The system is self-contained and does not require external locking devices or complex assembly procedures.
3Ease of manufacture
If simple bolt and nut fixation or inserted hooks are used to connect lifting brackets to the mantle, then welding is avoided, but the connections are far from satisfactory from a safety perspective
Solution Approach 1:
The attachment element combines multiple functional features into a composite structure: a main body for attachment, integrated locking portions for secure engagement with the mantle, and lifting portions for chain connection. This composite design achieves both ease of attachment and high safety reliability.
Data Source
AI summary
The present disclosure relates to a crusher mantle lifting device. Attachment elements are configured to be attachable to a crusher mantle. Each attachment element includes a main portion having an inner surface facing the mantle and an outer surface. A locking portion projects from the inner surface and is configured to protrude into a corresponding opening in the mantle. One or more lifting portions project from the outer surface. A tightening means is configured to press the attachment elements towards the crusher mantle. The disclosure also relates to an arrangement and a method.