Electric Hydraulic Cylinder Layout Using a Separated Driving Unit
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Solution Overview
Problem
Existing electric fluid pressure cylinders face interference issues when replacing traditional systems, limiting the freedom of arrangement layout due to integrated components like tanks, pumps, and electric motors.
Innovation Solution
An electric fluid pressure cylinder design that includes a driving unit with an electric motor, pump, and tank, connected via hose pipes and a valve block, allowing for flexible arrangement by separating the driving unit from the hydraulic cylinder and enabling direct integration without hose pipes, thus improving layout flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the tank, pump, and electric motor are integrated into a unit with the fluid pressure cylinder, then the configuration becomes compact and high power is achieved, but the freedom of arrangement layout is reduced and interference with other devices occurs
Solution Approach 1:
The invention divides the system into two independent parts: the electric fluid pressure cylinder (actuator) and the driving unit (tank, pump, motor). This segmentation allows each component to be optimized independently and enables flexible arrangement of the driving unit relative to the cylinder, resolving the contradiction between compactness and layout freedom.
Solution Approach 2:
The driving unit components (tank, pump, electric motor) are extracted from the integrated configuration and separated from the fluid pressure cylinder. This extraction allows the driving unit to be positioned independently, improving freedom of arrangement while maintaining the compactness of the cylinder itself.
2Adaptability or versatility
If hose pipes are used to guide working fluid between the driving unit and fluid pressure cylinder, then layout flexibility is improved, but device complexity and cost increase
Solution Approach 1:
The invention introduces a valve block as an intermediary component that integrates the fluid distribution function. This valve block serves as a mediator between the driving unit and the fluid pressure cylinder, eliminating the need for complex hose pipe arrangements while maintaining layout flexibility through the valve block's integrated port configuration.
Solution Approach 2:
The valve block merges multiple fluid control functions into a single integrated component. By combining the fluid distribution, control, and connection functions in one valve block, the system eliminates the need for separate hose pipes and connectors, reducing complexity while maintaining flexibility.
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 design enhances the freedom of arrangement layout while maintaining a compact configuration, preventing interference and allowing for easier integration, reducing the need for extensive hose pipes and lowering costs.
Implementation Method 1
an electric motor rotated by an electrical power supply
Implementation Method 2
a pump configured to discharge working fluid by being driven by the electric motor
Implementation Method 3
a valve block configured to control flow of the working fluid between the fluid pressure cylinder and the pump
Data Source
AI summary
An electric fluid pressure cylinder is provided with: a driving unit integrally provided with an electric motor, a pump configured to discharge working oil by being driven by the electric motor, and a tank; a hydraulic cylinder configured to be extended and contracted by the working oil supplied from the driving unit; and a first hose pipe and a second hose pipe configured to guide the working oil between the driving unit and the hydraulic cylinder. The driving unit is further provided with: a valve block configured to control the flow of working fluid between the fluid pressure cylinder and the pump; and a connecting plate attached to the valve block and formed with a connecting port to which the pipe member is connected, the connecting port being configured such that the working fluid supplied to and discharged from the fluid pressure cylinder passes through the connecting port.