Hydraulic Actuator Coupling for Multi-Tool Handheld Presses
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Solution Overview
Problem
Existing handheld pulling and pushing devices are incompatible with both electromechanically and hydraulically driven tools, necessitating separate drive devices for each type.
Innovation Solution
A hydraulic actuator with a working chamber and self-closing valve, designed for electromechanical pulling and pushing devices, allows connection and operation of hydraulic tools by integrating a hydraulic piston with a coupling section and a self-closing valve, enabling seamless switching between hydraulic and electromechanical tool drives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a handheld pulling and pushing device is designed for electromechanical tools only, then it can operate electromechanical tools, but it cannot operate hydraulic tools
Solution Approach 1:
The handheld pulling and pushing device is designed with a universal interface that accepts both electromechanical tools and hydraulic tools. The device integrates an electromechanical drive unit that can directly drive electromechanical tools while also incorporating a hydraulic conversion mechanism that converts electromechanical motion into hydraulic pressure, enabling the same device to drive both types of tools through a single standardized connection interface.
Solution Approach 2:
A hydraulic conversion mechanism serves as an intermediary component between the electromechanical drive unit and hydraulic tools. This intermediary converts the reciprocating motion of the electromechanical drive into hydraulic pressure through a piston-cylinder arrangement, allowing electromechanical energy to be transformed into hydraulic energy that can then drive hydraulic tools without requiring a separate hydraulic power source.
2Reliability
If separate drive devices are maintained for hydraulic and electromechanical tools, then each device can be optimized for its specific tool type, but device complexity and the number of devices required increases
Solution Approach 1:
The invention merges the functions of two separate drive devices (one for electromechanical tools and one for hydraulic tools) into a single integrated device. The unified device contains both an electromechanical drive unit and a hydraulic conversion mechanism, allowing it to perform both electromechanical and hydraulic tool driving functions through a single standardized interface, thereby reducing the total number of devices needed while maintaining optimized performance for both tool types.
3Adaptability or versatility
If a hydraulic actuator is integrated into an electromechanical pulling and pushing device, then hydraulic tools can be driven, but the device structure becomes more complex
Solution Approach 1:
The hydraulic actuator is designed as a modular, segmented component that can be independently attached to or detached from the electromechanical pulling and pushing device. The actuator is divided into separate functional sections (hydraulic piston, working chamber, fluid reservoir) that can be assembled and disassembled as a complete module, simplifying the integration process and reducing the perceived complexity of the overall device while maintaining full hydraulic tool driving capability.
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
Enables the use of a single device to drive both hydraulic and electromechanical tools, facilitating easy switching and reliable operation with a secure, detachable connection and maintenance-friendly design.
Implementation Method 1
By moving the hydraulic piston from its starting position towards its end position, a hydraulic pressure is generated, which can then supply hydraulic tools connected to the hydraulic tool connection
Implementation Method 2
The hydraulic tool connection (7) is closed with a self-closing valve
Data Source
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AI summary
The invention relates to a handheld pulling and pushing device and a hydraulic actuator for a handheld pulling and pushing device for driving hydraulic tools, comprising a housing body having a working chamber filled with hydraulic fluid, a hydraulic piston arranged to be displaceable in the working chamber between a starting position and an end position and a hydraulic tool connection with a hydraulic channel connected to the working chamber and having a self-closing valve.In order to provide a hydraulic actuator for an electro-mechanically driven handheld pulling and pushing device, as well as a handheld pulling and pushing device which makes it possible to drive hydraulic tools in addition to electro-mechanically driven pulling and pressing tools, it is provided that the housing body of the hydraulic actuator has a connecting section for the detachable fixing of the hydraulic actuator to a connection section of the pulling and pushing device, and the hydraulic piston has a coupling section for connection with a drive element of the pulling and pushing device that is adjustable relative to the connection section.