Hydraulic Valve Assembly with Pilot Pressure Spool Synchronization
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Solution Overview
Problem
Existing hydraulic valve assemblies require a mechanical coupling for joint movement of spool diverters, which is costly, space-consuming, and lacks a simple, cost-effective solution for ensuring safe and simultaneous control of hydraulic consumers.
Innovation Solution
A hydraulic valve assembly with a hydraulic pilot control device that uses pilot pressure to simultaneously control first and second spool diverters via a pilot valve device, allowing parallel switching into identical positions, and includes a shut-off valve for safety and redundancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical coupling is used to joint move spool diverters, then simultaneous control of hydraulic consumers is ensured, but device complexity and cost increase
Solution Approach 1:
The patent replaces the mechanical coupling system with a hydraulic pilot control device that uses pilot pressure to simultaneously control multiple spool diverters. This substitution eliminates complex mechanical linkages while achieving the same safety function of ensuring simultaneous control of hydraulic consumers.
Solution Approach 2:
The invention uses hydraulic pilot pressure to actuate spool diverters simultaneously. The pilot control device distributes pilot pressure to multiple spool diverters through hydraulic lines, enabling coordinated movement without mechanical coupling and reducing overall device complexity.
2Reliability
If a mechanical coupling is used to joint move spool diverters, then simultaneous control of hydraulic consumers is ensured, but space consumption increases
Solution Approach 1:
By replacing the mechanical coupling with a hydraulic pilot control device, the patent reduces the spatial requirements of the valve assembly. The hydraulic control mechanism occupies less space compared to mechanical linkages while maintaining the same control functionality.
3Reliability
If a mechanical coupling is used to joint move spool diverters, then simultaneous control of hydraulic consumers is ensured, but manufacturing cost increases
Solution Approach 1:
The patent replaces expensive mechanical coupling components with a more cost-effective hydraulic pilot control device. This substitution reduces manufacturing costs while maintaining the reliability of simultaneous control functionality.
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
Provides a simple, cost-effective, and space-saving solution for controlling hydraulic consumers, ensuring safe and simultaneous operation by preventing unintended activation and enhancing safety through redundant control mechanisms.
Implementation Method 1
pilot pressure can be applied to the first spool diverter (24, 74, 94) and the second spool diverter (28, 78, 98) via the hydraulic pilot control device (30)
Data Source
AI summary
A hydraulic valve assembly includes a connection section, a first valve section, at least one second valve section, and a hydraulic pilot control device with a pilot valve device. The first valve section has a first spool piston and a first spool diverter. The second valve section has a second spool piston and a second spool diverter. The first spool diverter and the second spool diverter are each switchable to at least a first spool diverter switching position and a second spool diverter switching position. Pilot pressure is applied in parallel to the first spool diverter and the second spool diverter via the hydraulic pilot control device in a first switching position of the pilot valve device for switching together into the first spool diverter switching position.