Hydraulic Pressure Control Apparatus with Segmented Load Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional hydraulic pressure control apparatuses with integrated load pressure detection circuits are complex, requiring significant space and making it difficult to install check valves, leading to enlarged housings and complicated configurations.
Innovation Solution
A hydraulic pressure control apparatus with a direction switch valve and a housing that includes separate load pressure detection circuit sections defined by through holes in the housing, each communicating with a spool bore and equipped with check valves, simplifying the circuit configuration and reducing space requirements by using a common load pressure detection circuit for multiple apparatuses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the load pressure detection circuit is formed as a single integrated circuit, then the detection function is complete, but the configuration becomes complicated and the space required increases
Solution Approach 1:
The load pressure detection circuit is divided into multiple separate circuit sections (first load pressure detection circuit section and second load pressure detection circuit section) instead of using a single integrated circuit. Each section is responsible for detecting load pressure in a specific state, which simplifies the overall configuration while maintaining complete detection functionality.
Solution Approach 2:
The check valve is extracted from the integrated circuit structure and placed in a specific location within the housing. This separation allows the check valve to be easily installed and maintained while keeping the circuit sections simple and modular.
2Reliability
If the load pressure detection circuit is formed as a single integrated circuit, then the detection function is complete, but the housing size increases
Solution Approach 1:
By segmenting the detection circuit into separate sections that can be distributed within the housing, the overall space utilization is improved. The circuit sections are arranged in different locations (one in the spool bore and another in the housing), which optimizes space usage and reduces the total housing volume required.
3Reliability
If a check valve is arranged in the integrated circuit, then backflow prevention is achieved, but the configuration becomes more complicated and installation becomes difficult
Solution Approach 1:
The check valve is extracted from the integrated circuit structure and positioned in a separate, accessible location within the housing. This extraction makes the check valve easily installable and maintainable without complicating the circuit configuration, as the valve is now a distinct component rather than part of an integrated assembly.
4Device complexity
If the load pressure detection circuit is simplified, then the housing size is reduced, but the detection completeness may be compromised
Solution Approach 1:
The detection function is maintained by creating multiple circuit sections that each handle specific detection scenarios. The first section detects load pressure when the actuator passage is connected to the supply passage, while the second section provides additional detection capability. This segmentation ensures detection completeness while keeping each individual section simple.
Solution Approach 2:
The load pressure detection circuit sections are designed to serve multiple purposes: they detect load pressure in different operational states and work together to provide comprehensive detection. This multi-functionality ensures that the simplified circuit structure still achieves complete detection coverage.
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 solution simplifies the load pressure detection circuit configuration, reduces the size of the housing, and facilitates efficient installation of check valves, resulting in a more compact hydraulic pressure control apparatus and circuit while preventing backflow and maximizing load pressure detection.
Implementation Method 1
Each load pressure detection circuit section is provided with a check valve arranged in the load pressure detection circuit section
Implementation Method 2
Each load pressure detection circuit section is defined by a through hole provided in the housing. The load pressure detection circuit sections communicate with the spool bore
Implementation Method 3
The direction switch valve is formed by a spool valve switched between at least two switch positions in correspondence with movement of a spool
Data Source
AI summary
A supply passage, a discharge passage, an actuator passage, and a spool bore are defined in a housing. The spool bore accommodates a spool and communicates with the supply passage, the discharge passage, and the actuator passage. Load pressure detection circuit sections of load pressure detection circuit are provided in correspondence with two switch. Each of the load pressure detection circuit sections detects load pressure when the actuator passage is connected to the supply passage. Each load pressure detection circuit section is defined by a through hole provided in the housing and connected to the spool bore. Check valves are each arranged in a corresponding one of the load pressure detection circuit sections. This simplifies the configuration of each load pressure detection circuit 21 and saves the space for arranging the load pressure detection circuit 21., resulting in a relatively compact housing.