Track Assembly Vibration Reduction via Roller Positioning
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Solution Overview
Problem
Existing power machine track assemblies face challenges in optimizing the distribution of weight and tension across endless tracks, leading to vibrations and instability, particularly when traversing uneven surfaces.
Innovation Solution
The track assembly includes a track frame with idlers and rollers positioned to apply and distribute tension evenly, with specific roller placement relative to the center of gravity and reinforcement members to minimize vibrations and enhance stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If rollers are positioned to engage the track at specific locations, then weight distribution is improved and vibrations are reduced, but the device complexity increases due to precise positioning requirements
Solution Approach 1:
The patent applies local quality by positioning rollers at specific locations corresponding to reinforced sections of the track. The rollers are strategically placed to engage with reinforced sections rather than uniformly distributed, creating localized weight distribution optimization at critical points while maintaining overall system simplicity
Solution Approach 2:
The track is pre-configured with reinforcement members at specific intervals before the rollers are positioned. This preliminary action of reinforcing the track at predetermined locations allows the rollers to be simply positioned to match these pre-established reinforcement points, reducing positioning complexity while achieving optimal weight distribution
2Stability of the object's composition
If the track frame is made more rigid to maintain stability, then weight distribution improves, but the machine's ability to traverse uneven surfaces deteriorates
Solution Approach 1:
The track frame incorporates a movable secondary portion that can dynamically adjust its position relative to the primary portion. This dynamic configuration allows the track frame to adapt to uneven surfaces by permitting relative movement, while still maintaining stability through the alternating reinforced and unreinforced sections that provide structural support at critical points
Solution Approach 2:
The track frame is segmented into a primary portion and a secondary portion that can move relative to each other. This segmentation allows the frame to flex and adapt to terrain variations while the reinforced sections provide stable engagement points for the rollers, balancing adaptability with stability
Data Source
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AI summary
Track assemblies (242; 300) for power machines (100; 200) include a track frame (243; 302), including a primary portion (304) and a second portion (306) moveable with respect to the primary portion. A plurality of rollers (248; 316) are positioned along the primary portion of the track frame relative to each other and the center of gravity of the power machine to provide an improved capability to compensate for vibration generated as the power machine moves over a support surface. In some aspects, a portion of a tensioning idler (e.g., 310) is positioned within a cylinder defined by one of the plurality of rollers.