Articulated Miniloader Boom for Working Range and Load Capacity
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Solution Overview
Problem
Existing articulated miniloader designs have limited working range and weight loading capacity, making them less universally usable in restricted areas.
Innovation Solution
A miniloader with a pivotable boom where the second horizontal pivot axis line lies within the circumference of the front wheels, allowing for a large working range and increased weight loading capacity by positioning the tool close to the front axle, combined with a telescopic second arm part and a boom pivot device featuring a hollow slewing ring for efficient line routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the second horizontal pivot axis line is positioned within the circumference of the front wheels, then the weight loading capacity is increased, but the working range is reduced
Solution Approach 1:
The boom is designed with multiple pivot axes and telescopic arms that allow dynamic adjustment of the coupling piece position. The system can transition between a retracted state (for high weight loading with the pivot axis within wheel circumference) and an extended state (for large working range), providing adaptability to different operational requirements
Solution Approach 2:
The boom is divided into multiple segments (first arm part, second arm part with telescopic sections) that can move independently relative to each other. This segmentation allows the coupling piece to be positioned optimally for either weight loading or working range depending on the operational needs
2Force
If the coupling piece is positioned close to the front axle, then the tipping moment is minimized, but the working range is reduced
Solution Approach 1:
The coupling piece position is made dynamic through the telescopic second arm part and multiple pivot axes. When minimum tipping moment is required, the system retracts to position the coupling piece close to the front axle. When large working range is needed, the system extends to position the coupling piece farther from the axle
Solution Approach 2:
The system changes the positional parameters of the coupling piece relative to the front axle based on operational requirements. The telescopic mechanism allows continuous adjustment of the distance parameter, enabling optimization of either tipping moment or working range as needed
Data Source
Figure 1
Figure 2a~2b
Figure 2c
AI summary
The invention provides a miniloader with an articulated chassis, with a boom pivot device arranged on a front chassis part, and a pivotable boom thereon comprising an upwardly extending first arm part which is fixedly arranged on the boom pivot device, for pivoting of the boom relative to the chassis about a vertical boom pivot axis line during operation of the miniloader, a second arm part which with a first end is arranged on a free end of the first arm part and is pivotable relative thereto about a first horizontal pivot axis line between a retracted state and an extended state, a coupling piece arranged pivotably about a second horizontal pivot axis line on a second end of the second arm part for coupling a tool thereto, wherein in the retracted state of the second arm part, the second horizontal pivot axis line lies within the circumference of the front wheels, viewed in a side view of the miniloader.