Public Works Tool Quick Coupler With Gravity-Reset Lock
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Solution Overview
Problem
Existing quick coupler systems for public works machines require user intervention for resetting and are complex, leading to potential uncontrolled swinging or falling of tools during incorrect coupling, posing a safety risk and complicating maintenance.
Innovation Solution
A secure connection device with a security component that rotates freely between engaged and disengaged positions, using a sliding contact mechanism to ensure the tool remains locked until manually unlocked, featuring a limited number of parts and simplified maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If existing quick coupler systems are used, then coupling functionality is achieved, but device complexity increases and maintenance becomes complicated
Solution Approach 1:
The coupling system is divided into distinct functional components: a security component that rotates freely between engaged and disengaged positions, a release component with translationally movable parts, and locking components. This segmentation allows each part to be simpler and easier to manufacture while maintaining overall system functionality.
Solution Approach 2:
The security component serves multiple functions: it prevents accidental uncoupling when in the engaged position, allows controlled uncoupling when rotated to the disengaged position, and automatically returns to the engaged position via gravitational force. This multi-functionality reduces the need for additional complex components.
2Extent of automation
If existing quick coupler systems are used, then coupling is achieved, but user intervention is required for resetting
Solution Approach 1:
The security component automatically returns to the engaged position through gravitational force after being rotated to the disengaged position. This self-service mechanism eliminates the need for manual resetting by the operator, as the system automatically resets itself once the uncoupling action is initiated.
Solution Approach 2:
Instead of requiring the user to manually return the security component to the engaged position, the system inverts the approach by using gravity to automatically return the component. The user only needs to initiate uncoupling by rotating the component, and the system handles the rest of the cycle automatically.
3Reliability
If existing quick coupler systems are used, then coupling functionality is provided, but safety risks arise from uncontrolled swinging or falling of tools
Solution Approach 1:
The security component is designed to prevent accidental uncoupling before it can occur. When in the engaged position, it physically blocks the connection component from disengaging from the coupling component, providing preliminary protection against tool dropping or uncontrolled swinging during operation.
Solution Approach 2:
The system requires a deliberate preliminary action (rotating the security component to the disengaged position) before uncoupling can occur. This preliminary action ensures that the operator intentionally initiates the uncoupling process, preventing accidental tool release while maintaining controlled operation.
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 provides enhanced safety by preventing accidental tool dropping and simplifies maintenance, while being adaptable to various tools and couplers, ensuring secure coupling without user intervention.
Implementation Method 1
a security component (19) mounted for free rotation between a position, called disengaged position, in which it allows a first connection component (12A) equipping the tool (2) to move relative to a first coupling component (13) and a position, called engaged position, in which it secures the retention of the first connection component (12A) by the first coupling component (13)
Implementation Method 2
said security component comprising at least one surface adapted to be in sliding contact with at least one surface, the shape of which is adapted to the first connection component (12A), said sliding contact inducing a rotation of the security component (19)
Data Source
AI summary
Quick coupler for coupling a tool on a working arm of a public works machine, with two connection components equipping the tool, two coupling components for coupling with the connection components, a security component mounted for free rotation, at least one locking component, a translationally movable release component adapted to allow the security component to rotate. The release component with at least one translationally movable part adapted to be in contact with at least one surface, the shape of which is adapted to that of the security component, and a security component with at least one surface adapted to be in sliding contact with at least one complementary shaped surface of a connection component, the sliding contact inducing a rotation of the security component when the connection component moves out of its accommodation housing defined by the first coupling component.