Implement Control Interface for Single-Motion Attachment Actuation

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Solution Overview

Problem

Conventional operating devices for implements like excavators require complex and awkward control movements to achieve superimposed movements of attachments, making them difficult for beginners or casual operators to use effectively.

Innovation Solution

An operating device with a manual control unit and controller/regulator that allows for simplified control through single detectable movements, converting linear or rotational movements into control signals to actuate attachments along multiple axes, enabling intuitive and ergonomic operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional joysticks with multiple pivot axes are used to control superimposed movements of attachments, then the implement can achieve complex attachment movements, but the operator must perform awkward control movements requiring experience and capabilities

Engineering Contradiction:
Improveattachment movement capabilityVSAvoidcontrol operation difficulty
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent inverts the conventional control approach by using a single-axis manual control unit that generates control signals for multiple actuators simultaneously. Instead of requiring the operator to manually coordinate multiple joysticks for superimposed movements, the system automatically calculates and executes the required actuator combinations based on a single control input, thereby simplifying operation while maintaining full attachment movement capability

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The controller/regulator acts as an intermediary between the simple single-axis manual control unit and the multiple actuators. It receives the single control signal, processes it to determine the required superimposed movements, and automatically actuates the appropriate actuators in the correct combinations, eliminating the need for the operator to directly manage complex multi-axial control

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multiple actuators are arranged on a working arm to enable superimposed movements, then the attachment can perform complex movements, but the operator must actuate these actuators in series or simultaneously which is complex

Engineering Contradiction:
Improveattachment movement rangeVSAvoidcontrol system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges the control functions for multiple actuators into a single manual control unit with one detector. The controller/regulator combines the control signals for all actuators based on the single control input, automatically managing the coordination required for superimposed movements. This merging approach maintains the capability to actuate multiple actuators while dramatically reducing control system complexity at the operator interface

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The system incorporates feedback mechanisms where the controller/regulator receives detection signals from the manual control unit, processes them to determine the required actuator responses, and automatically adjusts actuator actuation accordingly. This feedback loop enables the system to automatically manage the complexity of coordinating multiple actuators while responding to simple operator inputs

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11261580B2Operating device for an implement and implement with a corresponding operating device
Publication Date: 2022.03.01 LEIBHERR HYDRAULIKBAGGER GMBH
  • US11261580B2 patent drawing
  • US11261580B2 patent drawing
  • US11261580B2 patent drawing

AI summary

The application relates to an operating device for operating an implement with at least one attachment, comprising at least one manual control unit and at least one controller/regulator, wherein the controller/regulator is equipped to actuate the attachment on the basis of a single control movement of the manual control unit, which is detectable by means of a single detection means provided on the manual control unit, for carrying out a linear movement.