Loader Latching Alignment Using Hydraulic Float Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing loader attachment methods to work vehicles face challenges in achieving consistent 1-trip connections due to persistent misalignment between the mounting frame on the work vehicle and the loader, despite the use of parking stands and hydraulic lift cylinder float conditions.
Innovation Solution
A method and apparatus that utilize a pre-position instruction signal, forward movement instruction signal, and coupled confirmation signal, along with a float condition in hydraulic lifting cylinders, to facilitate precise alignment and coupling of the loader with the work vehicle, using a control unit and display unit to guide the operator through the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If parking stands are used to pre-position the loader, then the loader can be supported in an upright coupling position, but misalignment between the mounting frame and loader connecting points persists
Solution Approach 1:
The patent applies preliminary action by using parking stands to pre-position the loader arms in an upright coupling position before the actual coupling operation. This prepares the loader in advance for proper alignment with the mounting frame, addressing the positioning aspect but not fully resolving the misalignment issue between connecting points.
Solution Approach 2:
The patent introduces an intermediary mechanism - a float condition in hydraulic lift cylinders - that acts as a mediator between the loader mounting mast and the mounting frame. This float condition allows the mounting mast to move freely vertically, enabling bearing bolts to slide over the ramp and self-align with the catch hooks, thereby resolving the misalignment problem.
2Stability of the object's composition
If the mounting mast is in a rigid connection with the loader arm, then structural stability is maintained, but the mounting mast cannot pivot relative to the loader arm making mutual engagement difficult
Solution Approach 1:
The patent applies dynamics by transitioning the mounting mast connection from a rigid fixed state to a dynamic float condition. The hydraulic lift cylinders are placed in a float condition where hydraulic fluid can freely flow between chambers, allowing the mounting mast to pivot dynamically relative to the loader arm during coupling while maintaining structural stability through the hydraulic system's inherent damping.
3Reliability
If multiple attempts are made to couple the loader, then the connection can be established, but operational efficiency is reduced
Solution Approach 1:
The patent applies feedback by using a control unit that receives signals about the coupling status and provides real-time guidance to the operator. The system monitors whether the loader is properly coupled and can indicate when alignment is correct or when adjustments are needed, enabling the operator to achieve reliable coupling on the first attempt and improving productivity by eliminating repeated trial-and-error attempts.
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
Enables efficient and consistent 1-trip connection of loaders to work vehicles by ensuring precise alignment and movement control, reducing the need for multiple attempts and improving operational efficiency.
Implementation Method 1
arrangements have been proposed for effecting a float condition in loader hydraulic lift cylinders after the hydraulic fluid supply to the loader is decoupled
Data Source
AI summary
A method and apparatus assists coupling a loader with a work vehicle. A pre-position instruction signal is generated to pre-position the loader in a predetermined orientation to facilitate the coupling. A forward movement instruction signal is generated for initiating movement of the associated work vehicle 1 towards the loader. A coupled confirmation signal representative of the loader being coupled with the associated work vehicle is received. A forward movement pause instruction signal for pausing the movement of the associated work vehicle towards the loader is generated responsive to receiving the coupled confirmation signal. One or more of the pre-position instruction signal, the forward movement instruction signal, and/or the forward movement pause instruction signal may be automated signals delivered to the work vehicle for executing the commands or images rendered on a human readable display unit for instructing an operator actions to take for coupling the loader with the work vehicle.