Hydraulic Tool Head Retaining Rod and Curved Tool Carrier Layout

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Solution Overview

Problem

Existing device heads for hydraulically actuated tools face challenges in the design of the second tool carrier for effective guidance and removal, particularly in accommodating varying tool sizes and preventing damage during assembly and storage.

Innovation Solution

The second tool carrier is designed as an elongated rectangle with vertical edges and arcuate shorter edges, integrated with the piston skirt, allowing for adjustable connection to the piston shaft and protection from external damage, along with a telescopic holding rod for improved maneuverability and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the second tool carrier is designed as an elongated rectangle with arcuate shorter edges, then the guidance and removal of tools is improved, but the device complexity increases

Engineering Contradiction:
Improveguidance and removal of toolsVSAvoidtool carrier design
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The shorter edges of the second tool carrier are designed with arcuate lines having a common radius related to the hydraulic piston axis. This curved geometry enables the tool carrier to be guided along arcuate paths during operation and facilitates easier removal by allowing rotational movement during extraction, directly resolving the guidance and removal difficulties

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Object-affected harmful factors

If the piston shaft is completely accommodated in the cylindrical design, then protection from external damage is improved, but the ease of assembly and disassembly worsens

Engineering Contradiction:
Improveprotection from external damageVSAvoidassembly and disassembly
Core Design Contradiction:
Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The device is segmented into distinct components: the cylindrical design that remains fixed in the device head, and the tool carrier with piston shaft that can be detached. The tool carrier is designed to be removable through the device mouth, allowing assembly and disassembly while the cylindrical design provides protection when assembled

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The device mouth serves as an intermediary passage that enables the tool carrier to be inserted and removed from the device head. This opening allows access to the internal components for assembly and disassembly while maintaining protection during operation

Inventive Principle:
Principle #24Intermediary (Mediator)

3Manufacturing precision

If the device head is designed integrally with counterholder and cylindrical design, then manufacturing precision is improved, but the adaptability for different tool configurations worsens

Engineering Contradiction:
Improveintegral constructionVSAvoidtool configuration flexibility
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

While the device head is constructed integrally for manufacturing precision, the tool carrier is designed as a separate, interchangeable component. This segmentation allows different tool carriers to be used with the same device head, providing adaptability for different tool configurations while maintaining the precision benefits of integral construction

Inventive Principle:
Principle #1Segmentation

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

This configuration enhances the guidance and removal of tools, reduces the risk of damage, and allows for more efficient assembly and disassembly, while enabling overhead use and reduced manual handling of the device head.

Implementation Method 1

a hydraulic piston (6) which can move the receptacle (A) with the second tool (5) between an initial position and a working end position

Methodology Applied
Scientific EffectHydraulic pressure: Hydraulic Press

Data Source

PatentEP4041471B1Device head of a hydraulically actuatable tool
Publication Date: 2024.03.06 GUSTAV KLAUKE GMBH
  • EP4041471B1 patent drawingFigure 1
  • EP4041471B1 patent drawingFigure 2~2a
  • EP4041471B1 patent drawingFigure 3

AI summary

The invention relates to a device head (1) of a hydraulically actuatable tool (W), comprising an opposing holder (2) which is integrally formed on the device head (1) and which has a receiving means for a first tool (3), and comprising a second tool (5) that can be moved towards the opposing holder (2) by means of a hydraulic piston (6), wherein a cylindrical formation (4) also formed integrally with the device head (1) is provided relative to the hydraulic piston (6). In order to develop a further improved device head of this type so that it can be more easily handled, it is proposed that the device head (1) also has an integrally formed toothing recess (8) for the angular fixed, but also changeable, arrangement of a retaining rod (9).