Rotating Drum Rock Picker for Front-End Loader Attachment

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Solution Overview

Problem

Existing devices for removing rocks from soil are either difficult to use or expensive to maintain, failing to provide an efficient and cost-effective solution for farmers.

Innovation Solution

A rock picker and tumbler attachment for front-end loaders, featuring a rotatable drum with openings that allow soil to fall through while retaining rocks, which can be easily mounted and operated to separate rocks from soil efficiently.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If complex rock removal systems (rakes, conveyor belts) are used, then rock removal effectiveness is improved, but device complexity and maintenance cost increase

Engineering Contradiction:
Improverock removal effectivenessVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The drum is segmented with multiple openings of different sizes along its length, allowing different materials to be separated at different sections. This segmentation enables effective rock removal without requiring complex multi-component systems, as each section of the drum handles specific size ranges of debris.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The drum serves multiple functions simultaneously: it collects rocks, separates soil, and transports materials. By making the drum multi-functional, the invention eliminates the need for separate rakes, conveyors, and sorting mechanisms, thereby reducing overall system complexity while maintaining rock removal effectiveness.

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

2Device complexity

If manual rock removal is used, then device complexity is reduced, but labor time and effort increase

Engineering Contradiction:
Improvesystem simplicityVSAvoidtime and labor required
Core Design Contradiction:
Device complexityVSLoss of time

Solution Approach 1:

The rotating drum with graded openings performs automatic separation of rocks from soil based on size. As the drum rotates, smaller particles fall through openings while larger rocks are retained and transported to the discharge end. This self-service mechanism eliminates manual sorting labor while keeping the device simple with no complex control systems.

Inventive Principle:
Principle #25Self-service

3Measurement precision

If graded openings are used in the drum, then separation precision is improved, but manufacturing complexity increases

Engineering Contradiction:
Improveseparation precisionVSAvoidmanufacturing complexity
Core Design Contradiction:
Measurement precisionVSEase of manufacture

Solution Approach 1:

Different sections of the drum have locally optimized opening sizes tailored to specific separation needs. The drum incorporates a gradient of opening dimensions along its length, with smaller openings at the intake end for fine soil separation and larger openings toward the discharge end for rock retention. This local quality approach achieves high separation precision while maintaining manufacturing simplicity through progressive dimensional changes.

Inventive Principle:
Principle #3Local quality

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 solution significantly reduces time and labor required for rock removal, is easy to use, and can be applied for collecting and moving various objects beyond just rocks, offering a versatile and cost-effective solution.

Implementation Method 1

A user scoops rocks into the drum and rotates the drum to separate the rocks from the soil

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentUS9686897B2Rock picker and tumbler
Publication Date: 2017.06.27 FLEXXIFINGER USA INC
  • US9686897B2 patent drawing
  • US9686897B2 patent drawing
  • US9686897B2 patent drawing

AI summary

A front end loader attachment for picking and sorting objects, including picking rocks and sorting them from soil. An embodiment of the attachment is a device comprising a rotatable drum having a longitudinal axis, a mount for reversibly mounting the attachment to the front end loader, and a rotator assembly, with the drum comprising a base and an opposing opening defined by sidewalls connected to the base, wherein the sidewalls comprises a plurality of openings and the rotator assembly is operable to rotate the drum about the longitudinal axis.