Square Baler Synchronized Hydraulic Side Wall Control
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Solution Overview
Problem
Existing square balers deform bales due to imbalanced movement of side walls, resulting in banana-shaped bales that are difficult to handle and stack, as they do not maintain a straight-sided form during and after formation.
Innovation Solution
Implementing a hydraulic circuit that synchronizes the movement of the two side walls of the baling chamber by equal and opposite amounts, ensuring the longitudinal centreline remains constant, using double-acting hydraulic cylinders and metering valves with ganged movable fluid displacement elements to control fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If side walls are moved independently to regulate baling density, then density control is achieved, but bale shape is deformed causing banana-shaped bales
Solution Approach 1:
The patent merges the control of two independent side wall movements into a synchronized system. The hydraulic circuit connects both hydraulic cylinders so they move simultaneously and equally, transforming two independent control operations into one unified control action that maintains bale symmetry while enabling density regulation.
Solution Approach 2:
The synchronized hydraulic circuit acts as a feedback mechanism where the movement of one side wall is automatically mirrored by the other side wall. This ensures that any adjustment to regulate density is immediately reflected symmetrically on both sides, preventing the formation of deformed bales.
2Adaptability or versatility
If only one side wall is moved to adjust density, then density regulation is achieved, but bale symmetry is lost
Solution Approach 1:
The patent merges the control of two independent side wall movements into a synchronized system. The hydraulic circuit connects both hydraulic cylinders so they move simultaneously and equally, transforming two independent control operations into one unified control action that maintains bale symmetry while enabling density regulation.
Solution Approach 2:
The synchronized hydraulic circuit acts as a feedback mechanism where the movement of one side wall is automatically mirrored by the other side wall. This ensures that any adjustment to regulate density is immediately reflected symmetrically on both sides, preventing the formation of deformed bales.
3Adaptability or versatility
If side walls move by unequal amounts, then density adjustment is possible, but bale deformation occurs
Solution Approach 1:
The patent merges the control of two independent side wall movements into a synchronized system. The hydraulic circuit connects both hydraulic cylinders so they move simultaneously and equally, transforming two independent control operations into one unified control action that maintains bale symmetry while enabling density regulation.
Solution Approach 2:
The synchronized hydraulic circuit acts as a feedback mechanism where the movement of one side wall is automatically mirrored by the other side wall. This ensures that any adjustment to regulate density is immediately reflected symmetrically on both sides, preventing the formation of deformed bales.
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
This solution ensures that bales are formed straight-sided and remain aligned with the baling chamber centreline, making them easier to handle and stack by maintaining consistent bale density and shape.
Implementation Method 1
the supply of hydraulic fluid to and from the two hydraulic cylinders is effected by a common control circuit that ensures that the two sides walls are displaced in synchronism with one another by equal and opposite amounts
Implementation Method 2
the flow of hydraulic fluid to corresponding working chambers of the two hydraulic cylinders is regulated by metering valves having ganged movable fluid displacement elements
Data Source
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AI summary
A square baler (10) is described having a baling chamber (18) of which the side walls (60, 62) are movable by respective hydraulic cylinders (30, 32). In the invention, the supply of hydraulic fluid to and from the two hydraulic cylinders (30, 32) is effected by a common control circuit that ensures that the two sides walls are displaced in synchronism with one another by equal and opposite amounts.