Circular-Cylindrical Crushing Roller with Dovetail Guide
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Solution Overview
Problem
Existing stone crushing devices face issues with tool jamming, easy wear and damage, and difficult tool replacement due to inadequate attachment and design, leading to operational disruptions.
Innovation Solution
A circular-cylindrical crushing roller with internal reinforcement, dovetail-shaped guide, and a releasable fastening mechanism that securely attaches and easily replaces crushing tools, preventing jamming and ensuring stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If crushing tools are attached to shafts using conventional methods, then the tools can be mounted on the crushing roller, but the tools easily wear out, get damaged, and are difficult to replace
Solution Approach 1:
The crushing roller is segmented into a shell and internal reinforcement structure, while tools are segmented as separate replaceable components. The reinforcement is divided into multiple pieces that can be independently attached to the shell, allowing modular replacement without replacing the entire roller or tool assembly.
Solution Approach 2:
The fastening system transitions from static permanent attachment to dynamic reversible attachment. Threads and fastening elements allow tools to be securely mounted during operation and easily removed when worn, enabling the system to switch between secure operation mode and maintenance mode.
2Reliability
If crushing tools are securely fastened to prevent wear and damage, then tool attachment reliability improves, but tool replacement becomes more difficult
Solution Approach 1:
The reinforcement structure with pre-formed threads and the fastening elements are prepared in advance during manufacturing. This preliminary preparation allows tools to be quickly secured or replaced without time-consuming field modifications or complex assembly procedures.
Solution Approach 2:
The threaded fastening elements act as intermediaries between the tool and the crushing roller shell. These standardized intermediary components enable both secure attachment during operation and rapid removal for replacement, mediating between the conflicting requirements of reliability and ease of replacement.
3Ease of operation
If the crushing roller is designed with a circular-cylindrical shape, then jamming of stones is prevented, but the structural complexity increases
Solution Approach 1:
The crushing roller adopts a circular-cylindrical shape with curved surfaces instead of flat or angular geometries. This curvature prevents stones from catching on edges or corners, eliminating jamming issues while the modular construction keeps manufacturing complexity manageable.
Solution Approach 2:
The complex reinforcement structure is localized only where needed inside the roller shell, rather than making the entire roller complex. The simple circular external shape maintains ease of operation, while localized internal reinforcements provide structural support only in critical areas.
4Weight of moving object
If the crushing roller is made relatively light, then mobility and ease of installation improve, but the crushing tools may not have sufficient hold
Solution Approach 1:
The crushing roller combines different materials or material densities in its construction - a lighter outer shell for mobility with denser reinforcement materials internally for strength. This composite approach achieves both light weight and sufficient tool holding capability.
Solution Approach 2:
The reinforcement structure is nested inside the roller shell, with fastening elements nested within the reinforcement. This nested configuration concentrates strength where needed while keeping the overall roller weight low, as the heavy reinforcement is contained within the lighter shell structure.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The device is stored at a vehicle, and comprises a swiveling crushing roll (3), which is fastened with a crushing tool (6). The crushing roll is formed in circular cylindrical shape. The crushing tool is detachably fastened to the crushing roll. The crushing tool is fastened to the crushing roll in actuating manner.