Agricultural Soil Cultivation Machine Depth Adjustment
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Solution Overview
Problem
Existing agricultural soil tillage machines require a complex and costly system of hydraulic cylinders for adjusting the working depth of tillage tools, which is time-consuming and inefficient, especially when trying to achieve larger working widths for field use while maintaining transportability on public roads.
Innovation Solution
The design incorporates a central frame with pivotable side wings and rear rotating support devices that are mechanically coupled, allowing for synchronized adjustment of packer rollers and support wheels using a minimal number of actuators, reducing the need for multiple hydraulic cylinders and enabling easier depth adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple hydraulic cylinders are used to adjust the working depth of each packer roller independently, then the working depth can be precisely controlled, but the system becomes complex and time-consuming to operate
Solution Approach 1:
The patent combines multiple packer rollers into a single integrated unit that is adjusted by one hydraulic cylinder rather than multiple separate cylinders. The common support device with a shared adjustment mechanism allows all packer rollers to be synchronized in their working depth, reducing the number of actuators while maintaining control precision through the mechanical linkage of the support device.
Solution Approach 2:
The support device serves multiple functions: it supports the entire packer roller assembly, provides depth adjustment for all rollers simultaneously, and maintains their relative positions. This multi-functional design eliminates the need for separate adjustment mechanisms for each roller, reducing system complexity while preserving adjustment precision.
2Measurement precision
If a large number of hydraulic cylinders are installed for depth adjustment, then precise control is achieved, but the cost and hydraulic supply requirements increase
Solution Approach 1:
Multiple packer roller adjustment functions are merged into a single hydraulic cylinder system. The common support device transmits the adjustment force from one cylinder to multiple rollers, reducing the quantity of hydraulic cylinders and their associated supply lines while maintaining precise depth control across all rollers.
3Area of stationary object
If packer rollers are mounted on middle segments to achieve larger working widths, then the working width increases, but the transport height exceeds road transport limits
Solution Approach 1:
The side sections with packer rollers are designed to be pivotable relative to the central section, allowing dynamic reconfiguration between working position (horizontal, maximizing working width) and transport position (vertical, minimizing height). This dynamic capability enables the machine to achieve large working widths during operation while meeting road transport height restrictions during transit.
4Ease of operation
If side sections are pivoted vertically for road transport, then transportability is improved, but the working width is limited
Solution Approach 1:
The pivotable side sections enable the machine to dynamically switch between transport configuration (vertical positioning for road compliance) and working configuration (horizontal positioning for maximum working width). This dynamic adaptability resolves the contradiction by allowing the machine to optimize its geometry for the current operational context.
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
An agricultural soil cultivation machine (10) for soil cultivation and/or for spreading materials such as fertilizer and/or seed is disclosed, comprising a central frame (14) and a drawbar (16) connected to the front for coupling to an agricultural tractor. The soil cultivation machine (10) has a left side wing (36) and a right side wing (38) with soil cultivation tools (28), each pivotably mounted on the central frame. Support wheels (40) are arranged at the respective front ends of the side wings (36, 38). Pivotally mounted rear rotating support devices (46) are arranged at the respective rear ends of the side wings (36, 38), as well as on the central section (12) of the central frame (14).The rear rotating support devices (46) assigned to and located in the middle section (12) can be coupled to the respective rear rotating support devices (46) assigned to the left side wing (36) and/or the right side wing (38).