Crusher Rotator with Angled Cutters for Lightweight Material Processing
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Solution Overview
Problem
Conventional crushers have poor space efficiency and difficulty in processing lightweight materials like leaves, leading to low throughput and increased processing time, and require larger rotator and device sizes for equivalent performance.
Innovation Solution
A crusher design with a rotator featuring cutters mounted at an angle and a multi-face casing that disperses chipped material evenly, preventing jamming and allowing for efficient processing of lightweight materials, and a self-propelled vehicle-mounted configuration for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cutters are provided at two spots in the radial direction of the cutter disk with chipping performed in only a radial part, then the structure is simple, but the space efficiency is extremely poor and the rotator size must be large
Solution Approach 1:
The cutter disk is divided into multiple segments with cutters arranged at different radial positions and angles. This segmentation allows the rotator to process material more efficiently throughout its volume, reducing the overall size needed while maintaining processing capability
Solution Approach 2:
Cutters are arranged not only in the radial direction but also at different angular positions and heights on the cutter disk. This multi-dimensional arrangement maximizes the utilization of the rotator volume, allowing smaller dimensions while achieving equivalent or better processing efficiency
2Ease of manufacture
If the casing has a circular inner face allowing chips to rotate smoothly at high speed, then the structure is simple, but lightweight objects like leaves do not contact the cutter and processing efficiency is poor
Solution Approach 1:
The casing inner face is designed with asymmetric features including inclined surfaces and irregular contours rather than a simple circular shape. This asymmetry creates turbulence and forces lightweight material like leaves to contact the cutters, significantly improving processing efficiency while maintaining manufacturing feasibility
Solution Approach 2:
The casing inner face acts as an intermediary element that guides and directs the flow of chipped material toward the cutters. By designing specific surface features, it mediates between the rotating cutters and the material flow, ensuring efficient contact even for lightweight objects
3Ease of manufacture
If the cutter has a relief angle between the flank and cutting motion direction, then the cutter can be manufactured easily, but the crushing object is drawn in to the side of the cutter causing jamming
Solution Approach 1:
The relief angle parameter of the cutter is optimized to a specific value or range that balances manufacturing ease with jamming prevention. By carefully controlling this geometric parameter, the cutter maintains manufacturability while eliminating the side-drawing effect that causes jamming
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 design enables downsizing of the crusher and vehicle while improving processing efficiency for lightweight materials and reducing wear and tear, allowing for higher throughput and easier manufacturing.
Implementation Method 1
a cutter rotating about a rotation axis parallel to the longitudinal direction of the crusher; a crushing object is fed toward a crushing portion of the rotator, the crushing object is cut or chopped by, for example, the cutter to be made into chips
Implementation Method 2
a multi-face casing that disperses chipped material evenly, preventing jamming
Data Source
Figure 1
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AI summary
A crushing work vehicle (A) consists of a self-propelled vehicle and the crusher (T). The crusher (T) has a base frame (1) and is provided with a feeder (2) with a biting unit (25) located posterosuperior to the same. A casing (5) is installed to the front side of the feeder (2), in which the rotator (3) is held. The casing (5) is equipped with a lower casing (52) and an upper casing (51) having a polyhedral shape respectively and installed between side plates. The lower casing (52) is provided with a discharge plate (522) having many discharge hole (523). The rotator (3) has a rotating shaft (30), to which disks (31, 32, 33) are arranged at predetermined spaced intervals. Cutters (36) are arranged at two points in the circumference between the disks (31, 32, 33), with crushing blades (37) at four points.