Refuse Vehicle Track Guide System Horizontal Fork Movement
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Solution Overview
Problem
Refuse vehicles with front loading forks experience excessive horizontal movement during residential refuse pickup due to the extension of intermediate containers' grasping arms, causing stress on the forks, which were originally designed for vertical forces only.
Innovation Solution
A track and guide system is mounted on refuse vehicles, comprising transverse track members on the bumper and guide members on the forks, preventing horizontal movement while allowing vertical adjustment for garbage can height, using wear pads and gusset plates for strength and easy sliding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the grasping arm extends further from the intermediate container to handle residential refuse, then the versatility and functionality of the pickup system is improved, but horizontal movement of the front loading forks increases causing excessive stress
Solution Approach 1:
The track member acts as an intermediary constraint between the fork assembly and the vehicle frame. It provides a guided path that allows vertical movement while blocking horizontal movement, thereby mediating between the need for arm extension and the need to prevent fork displacement
Solution Approach 2:
The movement degrees of freedom are segmented into allowed (vertical) and prohibited (horizontal) directions. The track member geometry specifically permits motion along the vertical axis while constraining motion along the horizontal axis, separating the useful movement from the harmful movement
2Strength
If the front loading forks are constrained to prohibit horizontal movement, then the stress on forks is reduced, but the ability to adjust for varying garbage can heights is limited
Solution Approach 1:
The constraint system is made dynamic by allowing movement in the vertical direction while maintaining constraint in the horizontal direction. The track member geometry enables the fork assembly to move vertically to accommodate different container heights while始终保持 horizontal positioning stability
Solution Approach 2:
The constraint is applied selectively in different spatial dimensions. Horizontal movement is constrained in the lateral dimension, while vertical movement freedom is maintained in the vertical dimension, allowing the system to satisfy both constraint and adjustment requirements
3Stability of the object's composition
If a track and guide system is added to prohibit horizontal movement, then fork stability is improved, but the device complexity increases
Solution Approach 1:
The constraint function is applied locally only where needed - at the fork assembly interface with the vehicle frame. The track member is positioned specifically to constrain horizontal movement of the fork, adding complexity only in the local region where stability is required rather than throughout the entire system
Data Source
AI summary
A track and guide system for a refuse vehicle has at least one track member mounted on a bumper of the refuse vehicle. The track member has a desired length extending transverse to the ground. At least one guide member is mounted on a front loading fork of the refuse vehicle. The at least one guide member contacts the at least one track member to prohibit horizontal movement of the front loading fork with respect to the refuse vehicle.