Pile Press-in Device Interlocked Electric-Hydraulic Control
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Solution Overview
Problem
Conventional pile press-in systems face inefficiencies when combining electrically powered and hydraulic devices, leading to decreased workability and increased environmental impact due to the need for multiple power units and potential hydraulic fluid pressure loss.
Innovation Solution
A pile press-in device that optimally controls electrically powered and hydraulic devices in an interlocked manner, using electric motors for rotation and hydraulic devices for lifting, with a controller that adjusts based on rotation output and load conditions to enhance efficiency and prevent overheating, while also utilizing a cooling system and reducing environmental impact by replacing internal combustion engines with electric motors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the number of hydraulic motors is increased to enhance rotation power, then the rotation output is improved, but the number of power units increases making it difficult to place them on completed piles and reducing workability
Solution Approach 1:
The patent replaces hydraulic motors with an electric motor for driving the chuck rotation. This substitution eliminates the need for multiple hydraulic power units while achieving the required rotation output, thereby improving workability without sacrificing rotational power capability
2Ease of operation
If power units are placed away from the pile press-in device, then placement becomes easier, but hydraulic fluid pressure loss increases reducing efficiency
Solution Approach 1:
By replacing the hydraulic transmission system with an electric motor directly connected to the chuck, the patent eliminates hydraulic fluid transmission entirely. This removes both the placement constraints of power units and the associated pressure losses, as electrical energy transmission does not suffer from the same fluid dynamics limitations
3Device complexity
If hydraulic devices are used for chuck rotation, then the system is simpler, but pressure loss and fluid leakage problems occur
Solution Approach 1:
The patent substitutes the hydraulic motor system with an electric motor system while maintaining overall system simplicity. The electric motor directly drives the chuck rotation without requiring hydraulic fluid circulation, thereby eliminating pressure loss and leakage issues while preserving operational simplicity through direct drive architecture
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 enables efficient construction by optimizing the coexistence of electric and hydraulic devices, reducing the number of power units required, minimizing hydraulic fluid usage, and lowering environmental impact through reduced exhaust emissions and efficient cooling.
Implementation Method 1
electric motors for rotation
Implementation Method 2
hydraulic device serves as the lift for moving the rotation device up and down
Implementation Method 3
utilizing a cooling system
Data Source
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AI summary
Provided are a pile press-in device and a pile press-in method that allow an efficient construction even when electrically powered devices and hydraulic devices coexist in order to give drive members a driving force. A pile press-in device (1) comprises a chuck (5) for gripping and rotating a pile (4) in order to press the pile (4) into a ground while rotating the pile (4). The pile press-in device (1) causes electric motors (6) corresponding to the electrically powered device of the invention to give the chuck (5) a driving force for the rotation. The chuck (5) is moved up and down by lift cylinders (7) which are hydraulically powered hydraulic devices. An integrated control board (50) controls the electric motors (6) and the lift cylinders (7) in an interlocked manner.