Bale Loader Control System Automating Arm Positioning

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Solution Overview

Problem

The manual operation of large bale handling equipment, such as the Mil-Stak big bale loading attachment, requires significant operator effort and leads to increased fatigue due to the need for precise control of hydraulic actuators and manual reversal of loader arm movements, limiting productivity and efficiency in loading and transporting large bales.

Innovation Solution

A control system that incorporates position sensing mechanisms and sensors to automate the loading cycle of a bale loader, allowing for automated control of the loader arm and bale clamping apparatus, including monitoring of bale clamping pressure and position, enabling minimal operator input and efficient handling of bales of varying sizes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual control is used for the bale loading attachment, then the operator can precisely manage the loader arm and clamping apparatus, but the operator experiences increased fatigue and reduced productivity

Engineering Contradiction:

Improveoperator control precisionVSAvoidbale loading efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The system performs self-positioning and self-clamping operations through automated sensors and actuators. The loader arm automatically positions itself to grasp the bale, and the clamping apparatus self-actuates based on detected bale presence, eliminating the need for continuous manual intervention while maintaining operational precision.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Manual mechanical control is replaced with an automated control system that uses sensors to detect bale position and actuators to execute loading movements. This substitution eliminates the need for manual operation while maintaining precise control over the loader arm and clamping apparatus.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If automated control is implemented for the bale loading process, then operator fatigue is reduced and productivity increases, but the system complexity increases

Engineering Contradiction:

Improvebale loading efficiencyVSAvoidcontrol system complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The automated control system is divided into distinct functional modules: sensors for detecting bale position, control logic for processing sensor data, and actuators for executing loading movements. This segmentation allows each component to perform its specific function independently, simplifying the overall system design and maintenance while achieving automated operation.

Inventive Principle:

Principle #1Segmentation

3Productivity

If the loader arm moves through the apogee position during pivotal motion, then the bale can be loaded onto the wagon, but the actuator must reverse direction requiring precise operator timing

Engineering Contradiction:

Improveloading cycle completionVSAvoidactuator reversal timing

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

Sensors detect the position of the loader arm and provide feedback to the control system. When the arm approaches the apogee position, the system automatically initiates the actuator reversal sequence, eliminating the need for manual timing. The feedback mechanism ensures smooth transition through the apogee point by continuously monitoring arm position and adjusting actuator operation accordingly.

Inventive Principle:

Principle #23Feedback

4Productivity

If large rectangular bales are handled, then transport efficiency increases, but the equipment must accommodate varying bale sizes requiring flexible handling capability

Engineering Contradiction:

Improvetransport load capacityVSAvoidbale size accommodation

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The clamping apparatus is designed with adjustable parameters that can dynamically adapt to different bale sizes. The system can modify clamping force and gripper positioning to accommodate variations in bale dimensions while maintaining secure handling. This dynamic adaptability allows the equipment to efficiently handle both large rectangular bales for high-capacity transport and smaller bales when needed.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS8112202B2Automatic control of a large bale loading apparatus

Publication Date: 2012.02.07 BLUE LEAF I P INC

AI summary

A control system for managing rotation of a bale loading arm in a bale loader in which a pair of sensors combined with a purposefully designed sensor target enable loading arm position to be efficiently derived by a controller in order to direct the actuator movements based upon loading arm position necessary for automated operation of a bale loading cycle. Additional inputs to the controller enable initiation of a bale loading cycle to be automatically initiated. The controller may also determine when a complete bale wagon load is achieved and automatically direct loading arm motions necessary to configure the bale wagon for transport.