Suspension Structure for Work Machine with Intermediate Position Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The frequent operation of the operation changing unit in suspension mechanisms of work vehicles, such as farm tractors, leads to reduced durability due to frequent displacement of the suspension mechanism from the target height range, causing unnecessary activation and wear.
Innovation Solution
Incorporating an intermediate position detection unit and a controller that only activates the operation changing unit when the intermediate position of the suspension mechanism significantly deviates from the target range, reducing the frequency of operation and extending the durability of the operation changing unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the operation changing unit is actuated each time the suspension mechanism operates and the operating position is displaced from the target range, then the vehicle height is maintained in the specified range, but the operating frequency of the operation changing unit is greatly increased, reducing its durability
Solution Approach 1:
The controller does not actuate the operation changing unit for every displacement of the suspension mechanism from the target range. Instead, it selectively activates the operation changing unit only when the intermediate position departs from the target range, performing partial correction actions rather than continuous adjustments. This reduces the operating frequency while still maintaining adequate vehicle height control.
Solution Approach 2:
The system uses intermediate position detection to provide feedback about the suspension mechanism's operation. The controller monitors the intermediate position and compares it with the target range, then decides whether activation of the operation changing unit is necessary. This feedback mechanism enables intelligent control that reduces unnecessary operations while maintaining vehicle height within specifications.
2Manufacturing precision
If the operation changing unit is frequently activated to correct displacement from target range, then vehicle height control is improved, but wear and operational fatigue of the operation changing unit increases
Solution Approach 1:
The controller performs partial correction by activating the operation changing unit only when the intermediate position (not every instantaneous displacement) departs from the target range. This selective partial action maintains adequate vehicle height control precision while significantly reducing the frequency of operation changing unit activation, thereby extending its durability.
Solution Approach 2:
The intermediate position detection unit serves as an intermediary that provides a stabilized reference point for control decisions. By monitoring the intermediate position rather than instantaneous positions, the system makes more informed decisions about when correction is truly necessary, reducing spurious activations of the operation changing unit while maintaining control precision.
3Stability of the object's composition
If the operation changing unit operates continuously to maintain vehicle height in target range, then vehicle height stability is improved, but energy consumption and operational wear increase
Solution Approach 1:
The controller implements periodic monitoring of the intermediate position and selectively activates the operation changing unit only when necessary. This periodic action with conditional activation maintains vehicle height stability while avoiding continuous operation, thereby reducing energy consumption and operational wear of the operation changing unit.
Data Source
AI summary
An arrangement is provided in which the durability of an operation changing means is improved when this means is provided to the suspension mechanism in a suspension structure for a work vehicle. A maximum position (A1) and minimum position (A2) of the operation of the suspension mechanism are detected, and an intermediate position (B1) between the maximum and minimum positions (A1) and (A2) is detected. When the intermediate position (B1) departs from the target range (H1), the operation of the suspension mechanism is changed to the body raising side or body lowering side so that the intermediate position (B1) moves toward the target range (H1).