Aerator Hole Spacing Lockout Control System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing walk-behind aerators require the traction drive to be stopped to adjust hole spacing, and there is a need for a system that allows for consistent hole spacing application across different turf conditions and user operations without manual intervention.
Innovation Solution
A hole spacing control system with a lockout feature that allows operators to adjust and lock in a preset hole spacing range, enabling continuous operation while ensuring the coring head only functions within a predetermined speed and spacing range, using a combination of cam followers, pivoting members, and electrical sensors to maintain consistent aerating conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the aerator traction drive is stopped to adjust hole spacing, then the hole spacing can be changed, but the operation efficiency decreases and time is lost
Solution Approach 1:
The hole spacing control system allows dynamic adjustment of hole spacing while the aerator is in motion. The control arm with cam follower and electrical sensor enables real-time modification of hole spacing without requiring the machine to stop, making the system adaptable and flexible during operation.
Solution Approach 2:
The patent replaces traditional mechanical linkage systems with an electrical control system. Electrical sensors detect the position of the control arm and provide signals to the controller, which then adjusts the coring head spacing electronically, eliminating the need for mechanical stoppages and complex mechanical adjustment mechanisms.
2Adaptability or versatility
If the hole spacing is allowed to be changed freely during operation, then the adaptability to different turf conditions is improved, but the consistency and reliability of hole spacing application decreases
Solution Approach 1:
The control system incorporates electrical sensors that continuously monitor the position of the control arm and provide feedback signals to the controller. This feedback mechanism ensures that the coring head spacing remains within the predetermined range set by the supervisor, maintaining consistency and reliability while allowing for necessary adjustments.
Solution Approach 2:
The system allows parameter changes (hole spacing) within a predetermined range rather than free adjustment. The controller receives electrical signals from sensors and modifies the coring head spacing parameter accordingly, ensuring that changes remain within acceptable limits set for different turf conditions, thus maintaining both adaptability and consistency.
3Ease of operation
If the operator can adjust hole spacing from the operator station, then the ease of operation is improved, but the system complexity increases
Solution Approach 1:
The control arm serves multiple functions: it acts as a mechanical linkage for spacing adjustment, positions the cam follower for speed control, and provides the reference position for the electrical sensor. This multi-functionality reduces the need for separate control mechanisms, thereby limiting the increase in system complexity while maintaining ease of operation.
4Reliability
If the coring head is locked out outside preset speed range, then the reliability of aerating quality is improved, but the adaptability to different operating conditions decreases
Solution Approach 1:
The system allows parameter changes (coring speed and hole spacing) within a predetermined range rather than complete freedom of adjustment. The controller monitors electrical signals from sensors and permits coring head operation only when parameters remain within the acceptable range set for different turf and soil conditions, thus maintaining both reliability and reasonable adaptability.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An aerator hole spacing control with lockout prevents operation of a coring head (114) except if the speed control is at a limited range of preset coring speed positions between the minimum and the maximum. Electrical signals corresponding to a coring speed may be provided to a controller (120) that allows the coring head to be lowered to an operating position only if the signals are within the limited range of preset coring speed positions.