Self-Propelled Wheel Rake With Independently Pivotable Arms for Hay Protection

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Solution Overview

Problem

Existing wheel rakes require a tractor for propulsion, limiting operator visibility and efficiency, and cause significant hay damage and moisture loss during raking.

Innovation Solution

A self-propelled wheel rake with a cab-mounted powerhouse, adjustable controls, and independently pivotable rake arms, allowing for zero-radius turns and precise hay formation without running over the hay.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a tractor is used to pull the wheel rake, then the wheel rake can be propelled, but operator visibility and raking efficiency are limited

Engineering Contradiction:
Improveoperator visibilityVSAvoidpropulsion system
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent combines the propulsion system and operator cab directly onto the wheel rake platform, merging previously separate functions (tractor propulsion and rake operation) into a single integrated unit. This allows the operator to be positioned on the rake itself rather than in a separate tractor, improving visibility and control while reducing the need for external towing equipment.

Inventive Principle:
Principle #5Merging (Combining)

2Object-affected harmful factors

If a tractor is used to pull the wheel rake, then the wheel rake can be propelled, but hay damage and moisture loss increase

Engineering Contradiction:
Improvehay damageVSAvoidraking efficiency
Core Design Contradiction:
Object-affected harmful factorsVSProductivity

Solution Approach 1:

The patent implements independently pivotable rake arms that can dynamically adjust their position and angle during operation. This allows the rake to adapt to terrain variations and hay conditions, reducing unnecessary contact and damage to the hay while maintaining effective raking action. The independence of each arm enables precise control over hay handling.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If traditional wheel rake configuration is used, then结构简单性 is maintained, but operator positioning and control precision are reduced

Engineering Contradiction:
Improvecontrol precisionVSAvoidcab and support assembly
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent positions the operator cab and support assemblies in a three-dimensional arrangement where the cab is elevated and positioned between the rake arms, providing multiple viewing dimensions and control angles. The primary and rear support assemblies create a spatial framework that allows precise positioning of the operator relative to the rake mechanism, enhancing control precision through improved geometric positioning.

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

Data Source

PatentUS12433199B2Self-propelled wheel rake
Publication Date: 2025.10.07 JORDAN FARMS MFG LLC
  • US12433199B2 patent drawing
  • US12433199B2 patent drawing
  • US12433199B2 patent drawing

AI summary

A self-propelled wheel rake may include a cab that may be mounted to or otherwise secured to a main body. The cab or the main body may include a powerhouse for propelling the wheel rake along the ground. The cab and main body can be positioned between or behind opposing rake arm assemblies of the wheel rake. The cab can be configured to allow an operator to sit or stand while operating the wheel rake.