Stand-On Terrain Vehicle Propulsion Control With Blocking Bar
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing speed limiting systems for stand-on terrain working vehicles cannot be adjusted on-the-fly, leading to inefficiencies and limited adoption due to the need to stop the vehicle to adjust settings.
Innovation Solution
A control system with a blocking bar and locking mechanism that allows for on-the-fly adjustment of speed limits by pivoting between blocking and unblocking positions, using a locking bar to selectively engage notches on a locking bracket, allowing operators to set and maintain desired speed without stopping the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a speed limiting system is implemented to physically block propulsion controls from exceeding a predetermined speed, then speed control capability is improved, but the system cannot be adjusted during vehicle operation, reducing operational flexibility and efficiency
Solution Approach 1:
The blocking bar is designed to be dynamically repositionable between a blocking position (where it limits steering lever movement) and an unblocking position (where it allows full movement). The locking mechanism enables this dynamic adjustment during vehicle operation, allowing the speed limit to be changed on-the-fly without stopping the vehicle, thus resolving the contradiction between speed control capability and operational flexibility
2Device complexity
If previous speed limiting systems were adjusted only when the vehicle was not being operated, then the mechanical structure was simpler, but this caused inefficiencies and limited adoption due to the need to stop the vehicle for adjustments
Solution Approach 1:
The locking mechanism is designed with engagement portions that can be selectively engaged during operation to hold the blocking bar in desired positions. This preliminary preparation of the locking mechanism allows operators to quickly adjust speed limits without complex procedures or vehicle shutdown, maintaining mechanical simplicity while enabling on-the-fly adjustments that improve operational efficiency and productivity
Data Source
AI summary
A stand-on terrain working vehicle may include a control tower coupled to a frame, a steering lever coupled to the control tower and configured to move between a first position and a second position, a blocking bar coupled to the control tower and configured to move between a blocking position and an unblocking position, where the blocking bar in the blocking position limits movement of the steering lever to movement from the first position to an intermediate position between the first and second position, and where the blocking bar in the unblocking position does not limit movement of the steering lever between the first position and the second position. A locking bar may be coupled to the blocking bar and a locking bracket may be coupled to the control tower, where the locking bar and the locking bracket may act to hold the blocking bar in a desired position.