Cracking Device Lug-and-Slot Fixing Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cracking devices for stubble cultivators and subsoilers are difficult to mount and dismount due to their size and weight, and they often require complex screwing mechanisms that can lead to blockages and inefficiencies, particularly with pebbles rising to the surface during operation.
Innovation Solution
A cracking device design where the protective sock also functions as a fixing mechanism for the square and cracking shoe, simplifying assembly and disassembly, reducing weight, and eliminating screwing-related blockages, with features like side wings and a fork for improved stability and pivoting, and adjustable components for versatile use on different stanchions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional screw fixing mechanisms are used to secure the square and cracking shoe, then the device can be firmly attached, but the assembly and disassembly become difficult and time-consuming
Solution Approach 1:
The protective sock is merged with the fixing mechanism by integrating lugs directly into the sock structure. These lugs engage with corresponding slots in the square and cracking shoe, eliminating the need for separate screw fixing mechanisms. This integration maintains secure attachment while enabling rapid assembly and disassembly through simple engagement and disengagement of the lugs and slots.
Solution Approach 2:
The protective sock serves multiple functions simultaneously: it protects the prop from damage, provides structural support, and acts as the fixing mechanism for both the square and cracking shoe through its integrated lugs. This multi-functionality reduces the number of separate components needed and simplifies the overall assembly process.
2Reliability
If a massive complex-shaped piece is used to secure the square and cracking shoe, then the attachment is secure, but the prop becomes heavier and more difficult to assemble
Solution Approach 1:
The fixing function is segmented into discrete lugs integrated into the protective sock rather than using a single massive complex-shaped piece. These lugs are distributed at specific positions on the sock and engage with corresponding slots in the square and cracking shoe, providing secure attachment with significantly reduced weight and complexity.
3Reliability
If conventional screw fixing mechanisms are used, then the components can be securely fastened, but the risk of blockages from pebbles and jamming increases
Solution Approach 1:
The screw fixing mechanism is completely extracted from the design and replaced with a lug-and-slot engagement system integrated into the protective sock. This eliminates threaded holes and screw threads that are prone to blockages from pebbles and jamming, while maintaining secure fastening through the geometric engagement of the lugs with the slots.
Data Source
Figure 1~2
Figure 3
Figure 4~7
AI summary
A device for cracking soil intended to be secured to a strut of a tiller or a subsoiler, said device comprising -a sock (10), or "protective nose", intended to protect the strut, -a chisel (12) comprising a bar (52) ended by a head (54), and -a cracking shoe (18; 100), the chisel and/or the cracking shoe (18) being rigidly secured to the sock. The device is thus particularly multipurpose and easier to mount and dismount.