Greaseable Snow Wing Hinge for Seizure-Resistant Rotation
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Solution Overview
Problem
Existing coupling systems for snow wings on motor graders are susceptible to seizure due to lack of lubrication, especially in harsh operating conditions, leading to increased friction and potential failure of components.
Innovation Solution
A greaseable hinge system with passageways for lubricant distribution is introduced, allowing grease to be supplied to critical interfaces between the moldboard and hinge components, reducing friction and preventing seizure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pin and nut coupling assembly is used to rotatably couple the snow wing to the hinge, then the snow wing can be rotated to various positions, but the coupling assembly becomes susceptible to seizure over time due to lack of lubrication in harsh operating conditions
Solution Approach 1:
A greaseable hinge assembly is introduced as an intermediary component between the snow wing moldboard and the linkage system. This hinge includes grease passageways that deliver lubricant to the pin and nut coupling interfaces, preventing direct metal-to-metal contact and seizure while maintaining the rotational coupling function.
Solution Approach 2:
The hinge assembly incorporates self-lubrication through integrated grease passageways and fittings that automatically deliver grease to critical interfaces during operation. The system serves itself by maintaining lubrication without external intervention, preventing seizure while enabling continuous rotational movement.
2Device complexity
If the coupling assembly operates without lubrication in harsh conditions, then the structure remains simple, but friction increases leading to component wear and potential failure
Solution Approach 1:
The hinge assembly utilizes thin grease passageways and lubricant films within the coupling structure. These thin film lubrication paths are integrated into the hinge body, providing continuous grease delivery to contact surfaces without adding significant structural complexity while dramatically improving component durability.
3Reliability
If grease passageways are added to the hinge and pin components, then lubrication is provided to reduce friction and prevent seizure, but the manufacturing complexity of the components increases
Solution Approach 1:
The grease passageways are merged into the hinge body as integral features rather than separate components. The passageways are formed directly during hinge manufacturing, combining the lubrication delivery function with the structural hinge component, which reduces the number of separate parts and simplifies the overall manufacturing process despite adding internal complexity.
Solution Approach 2:
The hinge assembly serves multiple functions: it provides the rotational coupling mechanism, contains the grease reservoir, delivers lubricant through integrated passageways, and supports the pin and nut assembly. This multi-functionality consolidates what would otherwise require separate components into a single integrated unit, offsetting the manufacturing complexity of the passageways.
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 greaseable hinge system effectively reduces wear and prevents premature failure of components by ensuring consistent lubrication, enhancing the durability and reliability of the snow wing assembly.
Implementation Method 1
a first grease passageway to enable grease to pass from a first surface of the first plate to a second surface of the first plate... a second grease passageway to enable grease to pass from a bottom surface of the cylindrical body to an outer surface of the cylindrical body
Data Source
AI summary
In some implementations, coupling system for rotatably coupling a moldboard of a snow wing assembly includes a hinge for rotatably coupling the moldboard to a linkage assembly to enable the moldboard to rotate in a first rotational direction, the hinge including a plate having a first face and a second face. The plate includes a first passageway extending between the first face and the second face to facilitate lubricant being supplied to a first interface between the plate and the moldboard. The coupling system may include a pin extending through the moldboard and the plate to rotatably couple the moldboard with the hinge. The pin enables the moldboard to rotate in a second rotational direction about a rotational axis defined by a body of the pin, and the body includes a second passageway extending from a bottom portion of the pin to an outer surface of the pin.