Tractor Three-Point Hitch Coupling Guide Elements
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Solution Overview
Problem
Coupling agricultural attachments or trailers to a three-point hitch of a tractor can be cumbersome, especially when link balls are mounted on adjustable bolts, requiring precise positioning and time-consuming maneuvering due to the lack of guiding elements on both sides.
Innovation Solution
The addition of a guide element with a guide surface on the side where link balls are connected via a bolt allows links to be guided from both sides during coupling, reducing the need for precise positioning and eliminating the need for repeated forward and backward movement of the tractor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If link balls are mounted on adjustable bolts on one side only, then adaptability to different three-point hitch configurations is improved, but coupling precision and ease of operation deteriorate due to lack of guiding elements on both sides
Solution Approach 1:
The patent applies asymmetry by providing guide elements only on one side of the holder where link balls are mounted on adjustable bolts. This asymmetric configuration allows the link ball to be laterally guided during coupling while maintaining the ability to adapt to different three-point hitch configurations through bolt repositioning, thus resolving the contradiction between adaptability and coupling precision.
2Adaptability or versatility
If link balls are mounted on adjustable bolts on one side only, then adaptability is improved, but time consumption for coupling increases due to lack of guiding elements
Solution Approach 1:
The patent applies asymmetry by providing guide elements only on one side of the holder where link balls are mounted on adjustable bolts. This asymmetric configuration allows the link ball to be laterally guided during coupling while maintaining the ability to adapt to different three-point hitch configurations through bolt repositioning, thus resolving the contradiction between adaptability and coupling precision.
3Ease of operation
If guide elements are added on both sides, then ease of operation and coupling precision are improved, but device complexity increases
Solution Approach 1:
The patent applies asymmetry by providing guide elements only on one side of the holder where link balls are mounted on adjustable bolts. This asymmetric configuration allows the link ball to be laterally guided during coupling while maintaining the ability to adapt to different three-point hitch configurations through bolt repositioning, thus resolving the contradiction between adaptability and coupling precision.
Data Source
Figure 1~2b
Figure 3~5
AI summary
The invention relates to an agricultural implement (1) with coupling means (6) for connecting to a handlebar (2) of a three-point linkage (3) of a tractor (4), wherein the handlebar (2) has a hook-shaped recess (5) open on one side, into which the coupling means (6) can be received and the coupling means (6) are attached on one side to a bracket (7) of the implement (1) and are provided at their free end with a guide element (8) leading the handlebar (2) to the coupling means (6), and wherein at least one further guide element (9) is provided, which is opposite the first guide element (8) and through which the handlebar (2) can be guided from the side of the bracket opposite the free end to the coupling means (6).