Earth Working Machine Actuator Housing Positioning

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Solution Overview

Problem

Existing earth working machines face challenges in quickly and easily replacing the working apparatus while minimizing installation moment loads on the drive configuration, leading to inefficient and cumbersome operation.

Innovation Solution

The actuator housing is positioned closer to the functional longitudinal end of the drive configuration, allowing for a shorter load arm and reduced tilting of the working apparatus, with the actuator member being movable relative to the housing to efficiently bring the working apparatus into its operating position and simplify installation and deinstallation processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If the actuator is positioned at a distance from the drive configuration to provide sufficient force for moving the working apparatus, then the force application capability is improved, but the installation moment load on the drive configuration increases

Engineering Contradiction:

Improveforce application capabilityVSAvoidinstallation moment load

Core Design Contradiction:

ForceVSObject-affected harmful factors

Solution Approach 1:

A reaction force member is introduced as an intermediary element between the actuator and the drive configuration. The reaction force member receives the actuator's force and transmits it to the working apparatus, while simultaneously providing a reaction force path to the drive configuration that minimizes installation moment loads. This mediator enables force application without the harmful side effect of high moment loads.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The actuator is positioned asymmetrically close to the drive configuration rather than at a distant symmetric location. This asymmetric placement creates a short load arm that reduces the moment arm length, thereby minimizing installation moment loads while the reaction force member compensates to ensure sufficient force is applied to move the working apparatus.

Inventive Principle:

Principle #4Asymmetry

2Object-affected harmful factors

If the actuator is positioned closer to the drive configuration to reduce installation moment loads, then the installation moment load is reduced, but the force application capability decreases

Engineering Contradiction:

Improveinstallation moment loadVSAvoidforce application capability

Core Design Contradiction:

Object-affected harmful factorsVSForce

Solution Approach 1:

The reaction force member acts as a mechanical lever or force amplifier that enables the actuator positioned close to the drive configuration to generate sufficient force. The reaction force member translates the actuator's force into effective force application on the working apparatus while maintaining force multiplication through its geometric configuration.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Power

If a long load arm is used to provide sufficient torque for moving the working apparatus, then the torque capability is improved, but the tilting of the working apparatus increases

Engineering Contradiction:

Improvetorque capabilityVSAvoidtilting

Core Design Contradiction:

PowerVSStability of the object's composition

Solution Approach 1:

The reaction force member serves as an intermediary that provides torque capability without requiring a long load arm. By positioning the actuator close to the drive configuration and using the reaction force member as a mechanical advantage element, sufficient torque is generated without creating the tilting moment that would result from a long load arm extending far from the rotation axis.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Ease of operation

If the actuator is positioned far from the drive configuration to simplify working apparatus installation, then the ease of operation is improved, but the installation time increases

Engineering Contradiction:

Improveease of installationVSAvoidinstallation time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The reaction force member is extracted as a separate, pre-configured component that enables quick connection and force application. This extracted element allows the actuator to be positioned optimally close to the drive configuration, enabling rapid installation without the time-consuming adjustments that would be needed for distant actuator positioning.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS10724187B2Earth working machine whose working apparatus is displaceable out of its operating position using an onboard actuator

Publication Date: 2020.07.28 WIRTGEN GMBH

AI summary

An earth working machine (10) includes a machine body (13) having a machine frame (12) and a drive configuration (46), rotationally drivable relative to the machine frame (12), and to which configuration a working apparatus (32) embodied for earth working is releasably connected in torque-transferring fashion, in an operating position, for rotation together around a drive axis (A), such that when the connection is released, the working apparatus (32) is removable from the operating position in an axial direction relative to the drive configuration (46) for deinstallation from the drive configuration (46) and, for installation on the drive configuration (46), is conveyable into the operating position in an axial direction relative to the drive configuration (46), an actuator (65) being provided which is embodied to move the working apparatus (32) out of the operating position when the connection is released.