Front Loader Bucket Attitude Indicator for Bonnet-Obstructed View
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Solution Overview
Problem
Existing front loaders on tractors lack an efficient mechanism for easily checking the rocking state of the working tool, such as a bucket, which is obstructed by the bonnet during operation.
Innovation Solution
An indicator device is integrated into the front loader, comprising a first member fixed to the working tool cylinder and a second member that moves relative to the first member, displaying the rocking state through adjustable display members on an interlocking shaft, with a rocking regulation member to control movement and enhance visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional indicator rod with a bent portion is used, then the structure is simple, but the worker cannot easily check the attitude of the bucket due to obstruction by the bonnet
Solution Approach 1:
The indicator device transitions from a linear side-view indicator rod to a two-dimensional dial gauge with radial markings. The attitude indication is displayed on a circular scale with markings arranged radially around the center, allowing the worker to read the bucket attitude from multiple angles and positions, overcoming the obstruction caused by the bonnet.
Solution Approach 2:
A dial gauge mechanism serves as an intermediary between the bucket's rocking motion and the visual indication system. The dial gauge converts the linear displacement of the indicator rod into a rotational movement of the needle across a circular scale, providing a more visible and easily readable indication of bucket attitude.
2Adaptability or versatility
If the display member position is fixed, then the structure is simple, but the indicator device cannot accommodate different working tool types and assembly errors
Solution Approach 1:
The display member is designed with adjustable positioning capability, allowing it to be moved to different angular positions around the dial gauge center. This dynamic adjustability enables the indicator device to accommodate different working tool types and compensate for assembly errors, while the adjustment mechanism itself remains relatively simple.
Solution Approach 2:
The adjustment capability is localized to the display member's angular position, while the rest of the indicator device maintains a fixed, simple structure. This allows adaptability to be introduced only where necessary, without increasing the overall complexity of the entire device.
3Adaptability or versatility
If the interlocking member is made long, then the display member can be positioned anywhere, but the aesthetic appearance deteriorates and strength decreases
Solution Approach 1:
Instead of extending the interlocking member's length in one dimension, the solution utilizes angular positioning in a different dimension. The display member can be positioned at various angles around the compact dial gauge structure, providing positioning flexibility without increasing the overall length or compromising aesthetic appearance.
Solution Approach 2:
The display member is nested within the circular boundary of the dial gauge, rotating around the center point. This nested arrangement allows the display member to occupy different angular positions within the same compact space, eliminating the need for a long interlocking member while maintaining both aesthetics and positioning flexibility.
4Reliability
If the first member is made movable with respect to the working tool cylinder, then the indicator can adapt to cylinder movement, but the indication of working tool attitude becomes inaccurate
Solution Approach 1:
The rocking regulation function is extracted from the first member and assigned to a separate, dedicated regulation mechanism. This allows the first member to remain fixed relative to the working tool cylinder, ensuring accurate attitude indication, while the separate regulation mechanism handles any necessary adjustments without compromising indication accuracy.
Solution Approach 2:
The indicator device is segmented into distinct functional components: a fixed first member for accurate reference, a separate regulation mechanism for adjustments, and a dial gauge for display. This segmentation allows each component to perform its specific function optimally, with the first member remaining fixed to maintain indication accuracy.
Data Source
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AI summary
There is provided a front loader capable of easily checking a rocking state of a working tool. Included are a boom 12 to which a bucket 13 is coupled, a bucket cylinder 15 that rocks the bucket 13 with respect to the boom 12, and an indicator device 17 that displays a rocking state of the bucket 13. The indicator device 17 includes a first member that is not relatively movable with respect to the bucket cylinder 15, and a second member 30 that is relatively movable with respect to the first member along with rocking of the bucket 13, and capable of displaying the rocking state of the bucket 13 according to a relative positional relationship with the first member.