Over-Center Linkage for Automated Operator Protection
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Solution Overview
Problem
Existing operator protection apparatuses for terrain working vehicles require manual operation and use bulky, removable securing devices, which can lead to inefficiencies and loss of parts, necessitating the development of a system that allows for easy, secure, and automated adjustment of the protection apparatus without leaving the operator's seat.
Innovation Solution
An operator protection apparatus utilizing an over-center linkage with a center pivot joint that locks the upper portion in a raised position, allowing for automated lowering and raising using an actuator, eliminating the need for removable securing devices and enabling operation without leaving the seat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual actuation is used to move the upper portion between raised and lowered positions, then the apparatus can be operated without complex mechanisms, but the operator must leave the seating platform reducing operational efficiency
Solution Approach 1:
The patent replaces manual mechanical actuation with an automated actuator system. The actuator automatically moves the upper portion between raised and lowered positions without requiring operator intervention, allowing the operator to remain seated and maintain operational efficiency while adjusting the protection apparatus as needed.
2Reliability
If removable pins are used to secure the upper portion in raised position, then the apparatus can be secured reliably, but the securing devices may be lost or misplaced
Solution Approach 1:
The patent merges the securing function into the over-center linkage mechanism itself. The linkage inherently provides mechanical locking when in the over-center position, eliminating the need for separate removable pins or securing devices. This integrated approach maintains reliable securing while preventing loss of securing components.
3Reliability
If bulky securing devices are used to secure the upper portion, then the apparatus can be secured in raised position, but the device complexity and space requirements increase
Solution Approach 1:
The patent extracts the securing function from separate bulky devices and integrates it into the over-center linkage mechanism. The linkage itself provides the securing capability through its geometric configuration, eliminating the need for additional securing components and reducing overall device complexity while maintaining securing reliability.
4Device complexity
If the operator must manually actuate the upper portion, then simpler mechanisms can be used, but time is lost during position changes
Solution Approach 1:
The actuator system is pre-configured to automatically perform the positioning action when needed. Rather than requiring manual intervention at the moment of adjustment, the system has the capability ready to immediately move the upper portion between positions, reducing the time lost during position changes while maintaining reasonable mechanism complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances operational efficiency by allowing seamless adjustment of the protection apparatus while maintaining security, reducing the risk of lost parts and improving user convenience by enabling the operator to manage obstacles without stopping the vehicle.
Implementation Method 1
The at least one over-center linkage may be configured to move between the locked position and an unlocked position. When the over-center linkage is in the locked position, the over-center linkage may retain the upper portion in the raised position.
Data Source
AI summary
Aspects hereof relate to an operator protection apparatus having at least one over-center linkage. In some aspects, an operator protection apparatus can be raised and lowered by an operator from a seated position, for example, on a terrain working vehicle. Additionally, the at least one over-center linkage may automatically lock in the operator protection apparatus in a raised position. Accordingly, a mechanical force is then required to overcome the lock, and allow the operator protection apparatus to return to a lowered position.