Hydraulic Drive Direct Pump Connection for Pile-Driving
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Solution Overview
Problem
Existing hydraulic control blocks in pile-driving and drilling machines experience power loss due to flow resistance, which cannot be effectively mitigated without increasing construction space and cost by using larger blocks.
Innovation Solution
The apparatus connects the hydraulic drive directly with a pump and tank via additional lines, allowing the control block to function as a bypass, reducing flow resistance and enabling greater pressure and efficiency by separating it from the main hydraulic circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a control block is used to control multiple hydraulic consumers, then operation of different work devices is enabled, but power loss occurs due to flow resistance in the control block
Solution Approach 1:
The hydraulic circuit is segmented into two separate paths: a main line providing direct connection from pump to consumer for full power transmission, and a control block line providing controlled connection for multi-device operation. This segmentation allows the system to achieve both full power capability and multi-device control without the power loss that would occur if all control went through a single control block.
2Loss of energy
If a larger control block with larger cross-section is used, then power loss is reduced, but construction space and cost increase
Solution Approach 1:
Instead of enlarging the control block cross-section to reduce power loss, the invention segments the hydraulic circuit so that the control block only handles a portion of the total flow. The main line handles the bulk flow directly from pump to consumer, allowing the control block to remain compact while still enabling full power transmission capability in the system.
3Loss of energy
If a larger control block with larger cross-section is used, then power loss is reduced, but manufacturing cost increases
Solution Approach 1:
The hydraulic circuit is divided into a main line and a control block line, allowing the control block to remain small and simple in design. This segmentation reduces the manufacturing cost of the control block while maintaining the ability to transmit full power through the main line, avoiding the need to manufacture an oversized control block that would be expensive.
4Ease of operation
If the control block is positioned in series with the main hydraulic circuit, then control function is provided, but flow resistance hinders oil volume stream passage
Solution Approach 1:
The hydraulic circuit is segmented into a main line that provides unrestricted direct flow from pump to consumer for maximum productivity, and a separate control block line that provides control functionality. The control block is positioned in parallel rather than in series, so it can provide control functions without hindering the main oil volume stream passage through the system.
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 reduces power loss and allows for greater pressure and efficiency in hydraulic systems, ensuring unrestricted supply to consumers and minimizing construction space and cost.
Implementation Method 1
an open hydraulic circuit is used... the control block represents a hydraulic resistance for the oil volume stream
Data Source
AI summary
An apparatus for pile-driving or drilling, particularly a foundation machine, including at least one hydraulic drilling or vibration drive, which is connected with a control block in an open hydraulic circuit, by way of which drive at least one further consumer can be operated. The drive is connected with a pump by way of a first feed line and with a tank by way of a first return line. The hydraulic drive is additionally connected directly with the pump by way of a second feed line, and directly with the tank by way of a second return line.