Tractor Rear Mounting Frame Ribbed Bent Portion
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Solution Overview
Problem
Conventional rear implement mounting frames for tractors lack both high strength and cost-effectiveness, often requiring additional reinforcing members that compromise structural integrity.
Innovation Solution
A rear implement mounting frame construction featuring a pair of mounting frames with a bent portion that acts as a rib, reducing the distance between vertical connecting portions and case mounting portions, and incorporating a portal-shaped rear erect frame, which distributes load effectively without the need for additional support members, allowing for a simpler and more cost-efficient design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If additional reinforcing members are added to improve strength, then structural integrity is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The mounting frame incorporates a bent portion with a curved configuration instead of a straight line, creating a rib-like structure that naturally resists bending forces. This curvature in the plate member provides inherent strengthening without requiring additional reinforcing members, thus maintaining structural integrity while avoiding increased complexity
Solution Approach 2:
The bent portion causes the vertical connecting portion to be disposed closer to the tractor body in the right/left direction, creating a three-dimensional configuration that provides structural reinforcement through spatial arrangement rather than through adding more components in the same plane
2Strength
If the right/left distance between vertical connecting portions is reduced to improve rigidity, then vertical rigidity is improved, but adaptability for different implements decreases
Solution Approach 1:
The mounting frame is divided into distinct functional portions: a case mounting portion for attachment to the tractor, a bent portion for structural reinforcement, and a vertical connecting portion for implement attachment. This segmentation allows each portion to be optimized independently - the bent portion provides rigidity while the vertical connecting portion positioning can be adjusted for different implement requirements
3Ease of manufacture
If a simple flat-plate construction is used to reduce cost, then manufacturing cost is reduced, but vertical rigidity is insufficient
Solution Approach 1:
The bent portion with its curved configuration acts as a rib structure that provides inherent rigidity to the flat plate construction. This curvature creates geometric stiffness that resists bending forces without requiring the plate to be thicker or more complex, maintaining ease of manufacture while improving vertical rigidity
Solution Approach 2:
By bending the plate in the right/left direction to create the bent portion, the structure gains three-dimensional form that provides rigidity. This dimensional change transforms a simple flat plate into a structurally effective component that resists vertical loads without increasing manufacturing complexity
Data Source
AI summary
A rear implement mounting frame construction for a tractor is disclosed. The construction comprises a pair of mounting frames attached respectively to right and left sides of a tractor body. Each of these mounting frames comprises a plate member having a plate thickness oriented along the right/left direction. Each mounting frame also includes a case mounting portion that is connected to a rear axle case of the tractor body and a vertical connecting portion formed rearwardly of the case mounting portion which connects a rear implement. A bent portion formed between the case mounting portion and the vertical connecting portion causes the vertical connecting portion to be disposed closer to the tractor body than the case mounting portion. A right/left distance between the vertical connecting portions is set smaller than a right/left distance between the case mounting portions.