Quick-change Adapter Mechanical Fuse for Construction Machines
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Solution Overview
Problem
Existing quick-change systems for construction machines lack a mechanism to prevent unintentional detachment of the adapter, which can lead to safety hazards and potential damage.
Innovation Solution
A quick-change system with a mechanical fuse integrated into the adapter, which interacts with the locking device of the quick changer to prevent unintentional movement of the locking elements, ensuring the adapter remains securely attached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a quick-change system uses a locking device with movable locking elements for attaching adapters, then the ease of operation is improved, but the reliability deteriorates due to risk of unintentional detachment
Solution Approach 1:
The mechanical safety device applies preliminary anti-action by providing a blocking locking element that prevents the locking elements from moving into the release position. This blocking mechanism is activated in advance to counteract any unintended forces or operations that could cause accidental detachment, thereby resolving the contradiction between ease of operation and reliability.
2Productivity
If a quick-change system allows easy coupling and uncoupling of attachments, then the productivity is improved, but the object-generated harmful factors worsen due to potential unintentional detachment
Solution Approach 1:
The mechanical safety device implements preliminary anti-action by blocking the locking elements from moving into the release position. This prevents unintentional detachment that could cause harmful effects such as attachments falling and endangering people or damaging objects, while still allowing intentional coupling and uncoupling operations to proceed efficiently.
3Adaptability or versatility
If a quick-change system uses a locking device that can be moved between release and locking positions, then the adaptability is improved, but the stability deteriorates due to potential unintended movement
Solution Approach 1:
The blocking locking element in the mechanical safety device applies preliminary anti-action by preventing unintended movement of the locking elements into the release position. This maintains system stability while preserving adaptability, as intentional coupling and uncoupling operations can still be performed by moving the locking elements between release and locking positions as needed.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a quick-change system for changing attachments on a construction machine, comprising a quick coupler (1) and an adapter (2) that can be coupled to the quick coupler (1), wherein the adapter (2) includes coupling elements (5, 6) arranged at a predetermined distance from each other between two side walls (4), and the quick coupler (1) includes a carrier (10), first receptacles (14) arranged on one side of the carrier (10) for receiving the first coupling element (5), second receptacles (15) arranged on the other side of the carrier (10) for receiving the second coupling element (6), and a locking device (16) with at least one locking element (17) movable by means of a drive (18, 21) between a release position and a locking position for locking the second bolt-shaped coupling element (6) on the second receptacles (15).The quick-change system includes a mechanical locking device (9) that interacts with the locking device (16) of the quick-changer (1) and has at least one locking element (25) that can be moved into a locking position to block the at least one locking element (17) in the locking position.