Cross-link Assembly Frame Tilt Prevention
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Solution Overview
Problem
Coupling and decoupling of dangling grapples from machine arms is challenging due to the cross-link frame falling onto one side, especially with quick release autoconnect systems, which requires maintaining the frame in an upright position without operator intervention.
Innovation Solution
A cross-link assembly with a rotatable pin and abutment portion that engages with a lock member, allowing for alignment and secure locking with a grapple, preventing frame tilt during coupling and decoupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a quick release autoconnect system is used to couple/decouple the grapple from the machine arm, then the ease of operation is improved, but the cross-link frame may fall onto one side when not connected, worsening the stability
Solution Approach 1:
The lock member is engaged with the abutment portion on the pin before decoupling occurs, creating a preliminary counteracting force that prevents the cross-link frame from falling to one side. This pre-engagement mechanism counteracts the destabilizing effect before it can manifest, allowing the frame to remain upright during the quick release operation.
Solution Approach 2:
The lock member acts as an intermediary element between the pin and the cross-link frame, transferring and stabilizing the position of the frame during coupling and decoupling operations. This intermediary component enables the quick release function while maintaining frame stability through its engagement with the abutment portion.
2Ease of operation
If the cross-link frame is allowed to fall onto one side when decoupled, then the ease of operation for quick release is improved, but the reliability of maintaining alignment during reconnection is worsened
Solution Approach 1:
The lock member engages with the abutment portion to prevent frame misalignment before reconnection is attempted. This preliminary stabilization ensures that when the operator returns to reconnect the grapple, the frame is already in the correct aligned position, eliminating the need for manual realignment and ensuring reliable reconnection.
Solution Approach 2:
The lock member automatically maintains the frame in the upright aligned position through its engagement with the abutment portion, without requiring operator intervention. This self-maintaining feature ensures that the frame remains aligned during the entire period when the grapple is decoupled, enabling reliable reconnection when the operator returns.
Data Source
AI summary
A cross-link assembly for a dangling worktool may include a frame configured to connect to a grapple, the frame having spaced apart arms; a pin movably engaged with the spaced apart arms, the pin having an abutment portion; and a lock member movably engaged with the frame. The lock member may be configured to engage with the abutment portion and have a lock portion configured to engage with a lock element provided on the grapple.