Tow-Behind Roller Tool Suspension with Adjustable Downforce
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing tow-behind roller tool systems face limitations in adjustability and versatility, particularly in applying varying levels of downforce and accommodating different terrain conditions, which restricts their effectiveness in ground working operations.
Innovation Solution
A self-propelled work machine coupled with a tow-behind roller tool system featuring a hydraulic actuator, adjustable lifting arm, and a suspension assembly with compressible members and flexible rigging, allowing for multiple states of adjustment to control downforce and accommodate different terrain, including a range of lifting, float, and compressive states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing tow-behind roller tool systems use fixed downforce mechanisms, then the structure is simple, but the adaptability to different terrain conditions is poor
Solution Approach 1:
The patent implements a dynamic suspension assembly with compressible members (springs) that automatically adjust to varying terrain conditions. The suspension assembly transitions from a static fixed-downforce structure to a dynamic system that adapts to ground irregularities, allowing the roller tool to maintain contact with the ground while accommodating different terrain types without requiring complex manual adjustment mechanisms.
Solution Approach 2:
The suspension assembly with compressible members provides self-adjusting downforce capability. The system automatically responds to terrain variations through the mechanical action of the springs compressing and extending, eliminating the need for external control systems or manual intervention to adapt to different ground conditions, thus achieving adaptability without proportionally increasing structural complexity.
2Productivity
If existing roller tools lack adjustable downforce control, then the device complexity is low, but the productivity in ground working operations is reduced
Solution Approach 1:
The patent incorporates a hydraulic actuator coupled with the suspension assembly to provide controlled downforce application. The hydraulic system enables precise adjustment of the roller tool's downforce by controlling fluid pressure, allowing operators to optimize ground working effectiveness for different tasks (compaction, grading, etc.) while maintaining a relatively simple mechanical structure through the use of fluid power technology.
Solution Approach 2:
The system enables change in the downforce parameter through the hydraulic actuator and compressible suspension members. By adjusting hydraulic pressure and spring compression, the downforce parameter can be varied to optimize productivity for different ground working operations, transforming a fixed-parameter device into a variable-parameter system that enhances effectiveness without requiring complete structural redesign.
3Adaptability or versatility
If existing roller tools have fixed positioning, then the ease of operation is high, but the versatility for different ground working tasks is limited
Solution Approach 1:
The suspension assembly with adjustable downforce and the hydraulic actuator enable the roller tool to perform multiple ground working functions (compaction, grading, leveling) with a single device. The system's ability to adjust downforce and positioning allows one roller tool to replace multiple specialized tools, achieving versatility while maintaining ease of operation through centralized hydraulic control rather than requiring separate tools for each task.
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
The system provides enhanced adjustability and versatility, enabling controlled downforce application and improved performance in ground working operations, such as compaction and grading, by allowing the roller assembly to be raised, lowered, or tilted, thereby optimizing contact with the ground surface.
Implementation Method 1
a hydraulic actuator, adjustable lifting arm
Implementation Method 2
suspension assembly with compressible members
Data Source
AI summary
An apparatus includes a roller assembly including a roller frame and ground-contacting roller rotatably coupled with the roller frame. A suspension assembly includes a compressible suspension member operatively coupled with the roller assembly. A flexible rigging assembly includes an upper flexible rigging member and a lower flexible rigging member operatively coupled with the suspension assembly. The flexible rigging assembly is adjustable between a first state in which the upper flexible rigging member is taut and the lower flexible rigging member has a non-zero amount of upper flexible rigging member slack and a second state in which the lower flexible rigging member is taut and the upper flexible rigging member has a non-zero amount of lower flexible rigging member slack.