Quick Fit Mechanism for Power Harrow Blade
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Solution Overview
Problem
Conventional power harrow machines require complex mechanisms for replacing blades, leading to excessive maintenance time and reduced field efficiency due to the high forces experienced by soil working blades.
Innovation Solution
A quick fit mechanism featuring a power harrow blade assembly with a rotatable blade mount housing and u-shaped double pins, secured by a linchpin, allowing for rapid attachment and detachment of blades, utilizing driving shafts and spur gears to transmit power and rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional complex mechanism is used for blade replacement, then the blade can be securely held during operation, but the maintenance time increases excessively
Solution Approach 1:
The blade assembly is segmented into modular components: the blade itself, the double pin with single pin support, and the linchpin locking mechanism. This segmentation allows each component to be independently replaced or serviced, dramatically reducing maintenance time while maintaining secure operation during use.
Solution Approach 2:
The linchpin is extracted as a separate, easily removable component that secures the single pin to the double pin. By taking out the locking function as a separate element, the blade can be quickly released by simply removing the linchpin, eliminating the need for complex tools or procedures while ensuring secure holding during operation.
2Loss of time
If a simple fastening mechanism is used, then the blade replacement time is reduced, but the reliability of blade fixation during operation may be compromised
Solution Approach 1:
The double pin is pre-configured with a single pin inserted into it, and the linchpin is designed to lock the single pin in place. This preliminary arrangement ensures that when the blade is assembled, the fixation mechanism is already prepared and configured, providing reliable fixation during operation while allowing quick release when the linchpin is removed.
Solution Approach 2:
The pins and holes are designed with precise cylindrical geometry, ensuring proper alignment and secure fitting. The curved surfaces of the pins distribute loads evenly and prevent lateral movement, providing reliable fixation during high-force operation while maintaining simple assembly and disassembly procedures.
Data Source
Figure 1
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AI summary
The present invention relates to a quick fit mechanism for power harrow blade having an easily replaceable power harrow blade assembly (1) carried by a rotor to transmit power and rotation using the driving shafts (7, 10, 13) and various gears (8, 9, 11, 12, 14) to rotate the power harrow blade (2) to cultivate the soil of land. The power harrow blade assembly (1) comprises at least a pair of power harrow blades (2) which are mounted at the fixed angle on the rotatable blade mount housing (3) each one fastening with a double pin (4) fastened in the holes of the power harrow blade (2) and blade mount housing (3), the double pin (4) having a single pin (5) as a supporting part which is locked by a linchpin (6) thereby inserting in the hole of single pin (5) to hold the power harrow blade assembly (1). The assembly of the power harrow blades (1) reduces maintenance time by quick replacing the power harrow blades (2) and increases the field efficiency.