Compound Tillage Machine Press Wheel Dynamics
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Solution Overview
Problem
Current rotary tillage and sowing machines in the Jianghuai region of China are inefficient due to the lack of a linkage between ditching and pressing operations, leading to cumbersome and labor-intensive processes that affect seed germination and cannot perform full-width operations effectively.
Innovation Solution
A rotary tillage, sowing, ditching, and pressing compound operation machine is designed with a fertilization and sowing device, an intermediate rotary tillage and ditching device, and a multi-stage press wheel system, including a liftable ditcher and press wheels that allow for synchronized ditching and pressing operations across the entire width of the field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a liftable ditcher is added to existing rotary tillage and sowing machines, then ditching operation capability is improved, but when ditching is not performed the soil cannot be pressed affecting seed germination
Solution Approach 1:
The press wheel is designed to be liftable and switchable between working and non-working states through a connecting rod mechanism linked to the ditcher position. When the ditcher is in the working state, the press wheel is lifted to avoid interfering with ditching operations. When the ditcher is raised, the press wheel automatically lowers to press the soil. This dynamic adjustment ensures both ditching capability and soil pressing function can be performed sequentially without conflict.
2Manufacturing precision
If separate operations for ditching and pressing are performed manually or with separate machines, then operation quality is maintained, but the process becomes cumbersome and time-consuming
Solution Approach 1:
The patent combines the ditcher and press wheel into a single integrated device mounted on the rotary tillage and sowing machine. Both components share a common mounting structure and control mechanism, allowing them to be raised and lowered together. This merging eliminates the need for separate ditching and pressing operations, reducing the number of passes required and significantly improving operational efficiency while maintaining quality standards.
Solution Approach 2:
The integrated design allows the machine to perform tillage, sowing, ditching, and pressing operations in a continuous sequence during a single field pass. The components are arranged and controlled to operate continuously without interruption, eliminating the downtime and repositioning required when using separate machines for each operation.
3Measurement precision
If small-sized single-function seeders are used, then seed planting precision is maintained, but they cannot meet the requirements of mechanized production and large-sized tractors
Solution Approach 1:
The patent transforms a single-function seeder into a multi-functional compound operation machine by integrating tillage blades, fertilizer spreaders, seed meters, ditchers, and press wheels into one unified system. This universal machine can perform multiple agricultural operations simultaneously, making it compatible with large-sized tractors and mechanized production systems while maintaining the precision of seed planting through dedicated seed meter mechanisms.
Data Source
AI summary
A rotary tillage, sowing, ditching and pressing compound operation machine includes a fertilization and sowing device, an intermediate rotary tillage and ditching device, a frame, a liftable ditcher, and a multi-stage press wheel device. The multi-stage press wheel device includes a front press wheel and a rear press wheel. The front press wheel includes a front press roller shaft, front press rollers, and connecting rods. The rear press wheel includes a connecting plate, a rear press roller shaft, and a rear press roller. A first end of the connecting plate is connected to the rear press roller shaft by a support, and the connecting plate is connected to the frame in a manner of a sliding pair. The rear press roller is mounted on the rear press roller shaft in a manner of a revolving pair, and the rear press roller is located behind the liftable ditcher.