Cam-Pawl One-Turn Coupling for Uniform Bale Formation
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Solution Overview
Problem
Existing one turn couplings for balers are complex and require many parts, leading to inconsistent bale formation due to variable properties of bale materials, resulting in unsatisfactory non-uniform or oddly-shaped bales.
Innovation Solution
A simplified one turn coupling design with a driving part, driven part, and control element, including a pawl with a cam element, that engages and disengages the driving part with the driven part using a decoupling formation, allowing for a single turn of the output shaft, reducing wear with helical contact surfaces and incorporating a braking device to ensure precise control and uniform bale formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex one turn coupling design with multiple parts is used, then the coupling can transfer rotational drive intermittently, but the device complexity increases and requires many parts
Solution Approach 1:
The patent combines multiple functions into a single integrated mechanism. The control element integrates the cam element, pawl, and release mechanism into one component that simultaneously controls engagement, disengagement, and resetting of the coupling, eliminating the need for separate control mechanisms for each function.
Solution Approach 2:
The control element serves multiple purposes: the cam element controls timing of disengagement, the pawl prevents reverse movement, and the spring automatically resets the mechanism. This multi-functional design reduces the total number of parts while maintaining reliable intermittent drive transfer.
2Adaptability or versatility
If variable properties of bale materials are processed, then the coupling must adapt to different materials, but the bale formation consistency deteriorates resulting in non-uniform bales
Solution Approach 1:
The cam element is positioned and dimensioned to initiate disengagement of the driving part from the driven part at a predetermined point in the rotation cycle. This preliminary timing action ensures that regardless of material variations, the feeding fork completes its stroke at the correct moment, maintaining consistent bale formation.
Solution Approach 2:
The spring automatically resets the control element to its initial position after disengagement occurs, preparing the mechanism for the next cycle without external intervention. This self-resetting feature ensures consistent timing and positioning for each bale formation cycle, maintaining precision despite material variations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The simplified one turn coupling ensures consistent and uniform bale formation by controlling the operation of the feeding fork, reducing wear and improving the reliability of bale shape across different materials, while maintaining a compact and efficient design.
Implementation Method 1
The control element can comprise a pawl with a cam element. The cam element can be engageable with the decoupling formation to disengage the one turn coupling, for example by separating the driving part and the driven part apart from each other.
Data Source
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AI summary
A one turn coupling, comprising: a driving part; a driven part; and a control element, comprising a pawl, configured to control engagement and disengagement of the driving part with the driven part; wherein the driving part and the driven part are rotatable about a common axis, the pawl comprises a cam element that is engageable with a decoupling formation on the driving part and/or the driven part to disengage the one turn coupling by moving the driving part and the driven part apart from each other, wherein the pawl is pivotably displaceable about a pivot axis into and out of engagement with the decoupling formation.