Power Harrow Input Gear Integrated Hollow Profile Beam
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Solution Overview
Problem
Existing rotary harrow designs are complex and costly due to the separate input drive configuration, requiring precise alignment of drive pinion and spur gears during assembly, and involve multiple bolted hollow profile sections.
Innovation Solution
The input gear is integrated as a hollow profile section of the box beam, allowing for precise alignment and a unified unit with the spur gear and drive pinion, simplifying assembly and using a welded connection for lateral sections, and can be cast as a gear block for cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the input gear is designed as a separate component bolted to the box beam, then assembly flexibility is improved, but manufacturing precision and alignment between drive pinion and spur gear deteriorate
Solution Approach 1:
The input gear housing is merged with the central hollow profile section of the box beam to form a single integrated component. This eliminates the need for separate bolting operations and ensures precise alignment between the drive pinion and spur gear through unified manufacturing, directly resolving the contradiction between assembly flexibility and alignment precision.
2Ease of operation
If multiple hollow profile sections are bolted together to form the box beam, then assembly ease is improved, but device complexity and production cost worsen
Solution Approach 1:
The box beam is segmented into hollow profile sections that are bolted together, allowing ease of assembly. However, the input gear housing is integrated into the central section to reduce overall complexity. This selective application of segmentation resolves the contradiction by maintaining assembly ease where needed while reducing complexity in critical areas.
3Adaptability or versatility
If the input gear is flanged onto hollow profile sections, then adaptability is improved, but manufacturing cost and complexity worsen
Solution Approach 1:
The input gear housing is merged with the central hollow profile section to form a single cast component. This eliminates the need for separate flanging operations and reduces manufacturing cost, while the modular box beam structure maintains configuration adaptability through its segmented design.
4Ease of repair
If the drive pinion and spur gear are assembled separately, then ease of repair is improved, but manufacturing precision and alignment deteriorate
Solution Approach 1:
The drive pinion and spur gear are merged into a single integrated transmission unit within the input gear housing. This ensures precise alignment through unified manufacturing while maintaining ease of repair by allowing the entire transmission unit to be replaced as a single component.
Data Source
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AI summary
The harrow has a case beam extending transverse to working direction, and a tool spinner (4) comprising rotary shafts (3) arranged at distance from each other and supported in the case beam in rotatable manner. An input gear (2) e.g. gear block, arranged in gear housing and having a drive pinion (11) is attached to the beam, where the pinion is combed with a spur gear (6). The rotary shafts and an output shaft are supported in the input gear in rotatable manner, where the gear housing is designed as a hollow profile section (7) and is a component of the case beam.