Integrated Compaction Roller Layout for Higher Ground Load

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Solution Overview

Problem

Existing compaction rollers attached to working machines may not apply sufficient load to the ground due to weight and size limitations, and layouts can be obstructed by grass clipping containers, hindering effective compaction operations.

Innovation Solution

A working machine design that integrates compaction rollers between the front and rear wheels, utilizing the machine's gravity for compaction, with adjustable height mechanisms to switch between compaction and non-compaction modes, and includes front and rear rollers to distribute weight evenly for uniform ground contact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If a compaction roller is attached to the rear side of the rear wheel, then the compaction roller can be used for ground hardening, but the load applied to the ground may not be sufficient due to weight and size limitations

Engineering Contradiction:
Improveload applied to groundVSAvoidweight of compaction roller
Core Design Contradiction:
ForceVSWeight of moving object

Solution Approach 1:

The compaction roller is integrated with the machine body rather than being a separate detachable component. The machine body itself serves as the weight source for compaction, merging the transportation function and compaction function into a single unified system. This eliminates the need for a separate heavy compaction roller while still providing sufficient compaction force.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The machine body is designed to serve multiple functions: it acts as both the transportation platform and the compaction device. By positioning the compaction roller between the front and rear wheels and utilizing the machine body's weight, the system achieves multi-functionality without requiring separate dedicated compaction equipment.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Force

If a weight is applied to the compaction roller to increase load, then compaction effectiveness improves, but the layout is obstructed by the glass back for accommodating grass clippings

Engineering Contradiction:
Improveload applied to groundVSAvoidlayout complexity
Core Design Contradiction:
ForceVSDevice complexity

Solution Approach 1:

The compaction roller is positioned in the longitudinal dimension between the front and rear wheels, rather than adding weight in the vertical dimension. This spatial reconfiguration allows the compaction function to coexist with the glass back structure without interference, as the roller operates in a different spatial zone.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The compaction roller is structurally integrated with the machine body, combining the compaction function with the existing machine framework. This merging eliminates the need for separate weight application mechanisms that would conflict with the glass back layout.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If the compaction roller is detachably attached, then it can be removed when not needed, but separate storage and maintenance are required

Engineering Contradiction:
Improveoperational flexibilityVSAvoidstorage and maintenance requirements
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The compaction roller is integrated as part of the machine body structure rather than being a separate detachable component. This merging eliminates the need for separate storage and maintenance procedures, as the compaction roller is maintained as part of the overall machine system.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The machine body serves dual purposes as both transportation platform and compaction device, eliminating the need for separate compaction equipment that would require independent storage and maintenance. The unified design simplifies operational procedures.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

Enhances compaction effectiveness by leveraging machine gravity, ensures uniform grass cutting height, and eliminates the need for separate compaction roller storage or maintenance, while maintaining operational flexibility.

Implementation Method 1

gravity applied to the machine body can be utilized for a compaction operation

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentUS12464980B2Compaction roller for working machine
Publication Date: 2025.11.11 HONDA MOTOR CO LTD
  • US12464980B2 patent drawing
  • US12464980B2 patent drawing
  • US12464980B2 patent drawing

AI summary

A working machine includes a machine body, a front wheel and a rear wheel provided apart from each other in a front-rear direction of the machine body. A working portion is provided between the front wheel and the rear wheel and includes a power source and a cutter blade capable of being rotated around a rotary shaft by the power source. A compaction roller is provided between the front wheel and the rear wheel.