Sectional Hydraulic Valve End Cap Remote Pilot Integration
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Solution Overview
Problem
Existing sectional hydraulic valves for truck-mounted forklifts require additional valves and hoses for remote control systems, leading to increased weight, complexity, and potential leak points, which complicates operation and maintenance due to the need for external connections and additional pumps.
Innovation Solution
A sectional hydraulic valve design with an end cap and remote pilot galleries that allows for internal fluid delivery and venting without external connections, using the main hydraulic pump and reducing the need for an additional electric motor, thereby minimizing leak points and simplifying piping arrangements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional valves and hoses are added for remote control systems, then remote operation capability is improved, but weight and device complexity increase
Solution Approach 1:
The patent integrates the remote control hydraulic functions directly into the existing sectional valve body by incorporating remote pilot galleries and a valve assembly within the end cap. This merging of remote control functionality with the main hydraulic valve eliminates the need for separate external valves and hoses, thereby reducing device complexity while maintaining remote operation capability.
Solution Approach 2:
The sectional valve is designed to perform multiple functions: it controls both the main hydraulic operations and the remote control operations through its integrated valve assembly and pilot galleries. The same valve body serves as both the main control valve and the remote control valve, making the system multi-functional and reducing the need for additional components.
2Adaptability or versatility
If additional valves and hoses are added for remote control systems, then remote operation capability is improved, but the number of potential leak points increases
Solution Approach 1:
By integrating the remote control pilot galleries and valve assembly within the existing sealed valve body, the patent eliminates multiple external connections and joints that would otherwise serve as potential leak points. The remote control hydraulic lines are contained entirely within the valve housing, maintaining the integrity of the sealed system.
3Adaptability or versatility
If an electric motor pump is added separate from the main engine driven hydraulic pump, then remote control operation is improved, but weight and device complexity increase
Solution Approach 1:
The main engine-driven hydraulic pump serves dual purposes: it powers both the main hydraulic operations and the remote control operations. The integrated valve assembly directs hydraulic fluid from the same pump to different circuits based on operational requirements, eliminating the need for a separate electric motor pump and reducing overall system weight.
4Volume of moving object
If hydraulic piping and connections are tightly packed into limited available space, then space utilization is improved, but ease of manufacture and repair deteriorate
Solution Approach 1:
The patent combines the remote control hydraulic passages within the internal structure of the valve body itself rather than using separate external piping. The pilot galleries are cast or machined directly into the valve housing, and all connections are internal, which simplifies manufacturing as a single integrated component and facilitates repair by eliminating the need to handle separate external hoses and fittings.
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 reduces the number of potential leak points, decreases weight and complexity, and allows for more precise control of hydraulic cylinders, enabling a wider range of operations while simplifying maintenance and reducing space requirements.
Implementation Method 1
a valve assembly operable to selectively permit or restrict flow of hydraulic fluid between the connecting conduit in the end cap and the remote pilot galleries in the first one of the hydraulic sections
Data Source
AI summary
This invention relates to a sectional hydraulic valve and a truck mounted forklift incorporating the distributor. The sectional hydraulic valve comprises an inlet cover, a plurality of hydraulic sections and an end cap. The hydraulic sections each having a pump gallery, a tank gallery, an A port, a B port, a spool and a remote pilot gallery. The end cap comprises a pump port coupled to the pump gallery, a tank port coupled to the tank gallery and a connecting conduit between the pump port and the tank port. The end cap further comprises a remote pilot gallery port coupled to the remote pilot gallery, a fluid passageway between the remote pilot gallery port and the connecting conduit, and a valve assembly operable to selectively permit or restrict flow of hydraulic fluid between the connecting conduit in the end cap and the remote pilot gallery in the hydraulic section.