Reversible Milling Machine Quick-Lift Pivot Mechanism
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Solution Overview
Problem
Existing reversible tillers on single-axle work machines require manual adjustments and are prone to malfunctions due to a manually operated quick-change mechanism, making relocation and transport cumbersome and inefficient.
Innovation Solution
A reversible tiller with a rapid excavation unit that pivots autonomously between working and transport positions, utilizing a depth guide and pivoting elements to adjust the blade shaft depth and serve as a support roller, eliminating the need for manual repositioning and reducing mechanical failure risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manually operated quick-change mechanism is used to reposition the roller, then the roller can be repositioned between working and transport positions, but the operator must manually operate the mechanism frequently and it is prone to malfunctions due to contamination
Solution Approach 1:
The rapid excavation unit is designed to pivot autonomously between working and transport positions using its own weight and the pivoting elements, eliminating the need for manual operation of a quick-change mechanism. The unit automatically returns to the working position when the direction of travel changes, making the system self-servicing and free from manual intervention.
Solution Approach 2:
The system transitions from a static locked position system to a dynamic autonomous pivoting system. The rapid excavation unit can freely pivot between positions based on the direction of travel, with the pivoting elements enabling automatic position changes without manual intervention or complex locking mechanisms.
2Productivity
If the roller serves as a support roller for transport, then relocation is facilitated, but manual adjustment of the rapid excavation unit position is required before each repositioning
Solution Approach 1:
The rapid excavation unit automatically pivots to the transport position when the machine is moved for relocation and automatically returns to the working position when the direction of travel changes. This autonomous behavior eliminates the need for manual adjustment before each repositioning, significantly reducing the time lost to adjustments and improving relocation efficiency.
Solution Approach 2:
The rapid excavation unit performs periodic automatic position changes based on the direction of travel. When the machine reverses direction, the unit automatically returns to the working position, creating a rhythmic, periodic action that eliminates manual intervention and optimizes the relocation process.
3Extent of automation
If the rapid excavation unit is freely pivotable between working and transport positions, then automatic repositioning is enabled, but the unit requires a mechanism to return to the working position
Solution Approach 1:
The system uses the weight of the rapid excavation unit itself as a counterweight to automatically return it to the working position. When the direction of travel changes, gravity and the unit's own weight cause it to pivot back to the working position, eliminating the need for complex active control mechanisms while enabling automatic repositioning.
Solution Approach 2:
Instead of using an active mechanism to move the rapid excavation unit to the transport position, the system inverts the approach: the unit is allowed to pivot freely to the transport position, and then passive elements (pivoting elements and end stops) combined with gravity automatically return it to the working position when direction changes.
Data Source
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AI summary
Reversible milling machine for front mounting and drive-connected to a single-axle, frame-guided machine, comprising a housing, a cutter shaft extending transversely to the direction of travel arranged therein, a quick-lift unit arranged behind the housing, a screening unit, a depth guide for adjusting the height of the quick-lift unit, wherein the quick-lift unit, in the working position, defines the ground penetration depth of the cutter shaft and, during the repositioning or transport process, serves in a repositioning or transport position as a support roller to lift the cutter shaft from the ground, wherein the quick-lift unit has a roller and pivoting elements, wherein the quick-lift unit is pivotably attached to the housing via the pivoting elements, wherein the pivoting elements are freely pivotable at a pivot point on the housing.are arranged, and the quick-lifting unit can be brought into the working position or into the repositioning or transport position simply by pivoting the quick-lifting unit around the pivot point.