Bulldozer Engine Cover Side Plate Vibration Suppression
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Solution Overview
Problem
Bulldozers experience significant vibrations at the side plate, particularly when attached to the vehicle body frame near the bottom edge, leading to increased vibration generation.
Innovation Solution
The side plate is designed with a bent shape featuring a first and second planar portion, with the attachment section positioned near the intersection of the ridgeline and rear edge, and the center of gravity of the engine cover positioned above the attachment section, which helps in suppressing vibrations by altering the attachment point and distributing the weight effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the side plate is attached to the vehicle body frame in the vicinity of the bottom edge, then the attachment structure is simple, but vibrations are easily generated in the side plate
Solution Approach 1:
The attachment position is changed from the bottom edge vicinity to a higher position near the intersection of the ridgeline and rear edge. This parameter change in attachment location fundamentally alters the vibration characteristics of the side plate, suppressing vibration generation while maintaining structural simplicity
Solution Approach 2:
The side plate is designed with a bent shape comprising first and second planar portions at different spatial orientations. This dimensional change creates a ridgeline that spans from the upper edge to the rear edge, and the attachment section is positioned at this ridgeline intersection, utilizing the three-dimensional structure to achieve vibration suppression
2Object-affected harmful factors
If the attachment section is positioned at a higher position, then vibrations are suppressed, but the frame configuration becomes more complex
Solution Approach 1:
The ridgeline structure serves multiple functions: it provides the attachment path for the side plate, defines the bent shape geometry, and acts as a vibration suppression feature. The attachment section at the ridgeline intersection utilizes this multi-functional structure, achieving vibration suppression without requiring additional frame components
Solution Approach 2:
The attachment section is integrated into the ridgeline structure itself rather than being a separate component. The ridgeline and attachment section are merged in space at the intersection point, eliminating the need for complex additional framing while achieving the vibration suppression effect
Data Source
AI summary
A bulldozer includes a cab, a vehicle body frame supporting a cab and an engine cover. The engine cover has a side plate that has a rear edge with first and second rear edges. The second rear edge is positioned above the first rear edge. The side plate has a first planar portion which includes the first rear edge and a second planar portion which includes the second rear edge. The side plate has a bent shape between the first and second planar portions. A ridgeline is disposed between the first and second planar portions and spans from the upper edge to the rear edge of the side plate. The side plate includes an attachment section which is attached to a vehicle body frame. The attachment section is positioned in the first planar portion adjacent to an intersection of the ridgeline and the rear edge of the side plate.