Hydraulic Splitting Device Pressure Intensifier
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Solution Overview
Problem
Hydraulically operated splitting devices are limited by the available hydraulic pressure, restricting the maximum splitting force that can be generated, which depends on the hydraulic unit or carrier device's system pressure, necessitating a solution to increase splitting force without enlarging the device design.
Innovation Solution
Incorporating a pressure intensifier connected to both the extension and retraction chambers of the piston-cylinder unit, with a single pressure gauge and a valve block to direct the intensified pressure, allowing operation at higher hydraulic pressures independently of the hydraulic unit or carrier device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the cylinder surface of the piston-cylinder unit is increased to generate higher splitting force, then the splitting force increases, but the device size must be enlarged
Solution Approach 1:
The patent employs a pressure intensifier device that uses hydraulic pressure to generate a higher output pressure than the input pressure. The pressure intensifier receives hydraulic medium at a first pressure and delivers it at a second, higher pressure to the piston-cylinder unit, enabling high splitting forces without requiring a larger cylinder surface or device size
2Force
If the hydraulic unit or carrier device is dimensioned to provide higher system pressure, then the splitting force increases, but the cost and complexity of the hydraulic system increase
Solution Approach 1:
The hydraulic system is segmented into two functional parts: a low-pressure hydraulic unit (or carrier device hydraulic system) that provides the hydraulic medium, and a pressure intensifier device that independently generates the required high pressure. This segmentation allows the use of affordable, low-pressure hydraulic units while achieving high splitting forces through the pressure intensifier
Solution Approach 2:
The pressure intensifier acts as an intermediary device between the low-pressure hydraulic unit and the piston-cylinder unit. It receives low-pressure hydraulic medium and transforms it into high-pressure hydraulic medium, mediating the pressure transformation without requiring the entire hydraulic system to be designed for high pressure
3Force
If a pressure intensifier is provided for both extension and retraction chambers, then the splitting force increases in both directions, but the device complexity and cost increase
Solution Approach 1:
The single pressure intensifier is designed to serve both the extension chamber and the retraction chamber of the piston-cylinder unit. By using a single multi-functional pressure intensifier instead of two separate ones, the patent reduces device complexity and cost while still enabling high splitting forces in both extension and retraction directions
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 increased splitting force in both extension and retraction directions, reducing costs by requiring only one pressure intensifier and directional control valve, and is particularly advantageous for use with carrier devices like excavators or demolition robots.
Implementation Method 1
The splitting device has at least one pressure intensifier (17) to increase the inlet pressure
Implementation Method 2
Arranged on a piston rod of the piston of the piston-cylinder unit is a wedge lance which engages between two elongated thrust pieces... via which the wedge lance forces the pressure pieces apart more or less radially
Data Source
Figure 1
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AI summary
Hydraulically operated splitting device with a piston-cylinder unit, controlled by a hydraulic medium with an input pressure on the input side, comprising an extension chamber and an insertion chamber which can be pressurized depending on the direction of movement of the piston, a wedge lance is arranged on the piston rod of which engages between two elongated pressure pieces connected to the cylinder housing, which are not displaceable in the direction of the piston stroke but are displaceable transversely thereto, and which have wedge-shaped pressure surfaces complementary to the wedge lance and force the pressure pieces apart more or less radially depending on a stroke of the piston of the piston-cylinder unit, wherein the splitting device has at least one pressure intensifier to increase the input pressure.