Multidirectional Switching Valve Actuator Acceleration Control
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Solution Overview
Problem
Existing multiple direction switching valves for construction equipment require additional outside pipes to stop the acceleration of one actuator when another actuator is operated, which is inconvenient and inefficient.
Innovation Solution
A multiple direction switching valve design that incorporates a first actuator acceleration releasing mechanism within the valve member block, allowing the acceleration of a first actuator to be stopped upon operation of a second actuator without the need for additional outside pipes, by using a combination of hydraulic circuits and valves to control the flow of pressure oil.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an outside pipe is added to stop the acceleration of the first actuator when the second actuator is operated, then the control function is achieved, but the device complexity and installation difficulty increase
Solution Approach 1:
The patent merges the acceleration releasing mechanism with the valve member block by forming the first actuator acceleration releasing mechanism (30) directly within the valve member block (10). This integration eliminates the need for separate outside pipes and external control systems, as the patent originally required. The merging of functions within a single component reduces device complexity while maintaining the reliability of the control function.
Solution Approach 2:
The patent extracts the acceleration releasing function from the external piping system and relocates it into the valve member block. By taking out the need for outside pipes and integrating the releasing mechanism internally, the invention simplifies the overall system architecture while preserving the essential control capability.
2Device complexity
If the first actuator acceleration releasing mechanism is integrated within the valve member block, then the device complexity is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent combines multiple functions (direction switching and acceleration releasing) into a single integrated valve member block. This merging reduces the number of separate components and connections needed, thereby reducing device complexity. The integrated design consolidates what would otherwise require separate assemblies and external piping into one manufacturable unit.
Solution Approach 2:
The valve member block is designed to perform multiple functions: it contains both the direction switching valves and the first actuator acceleration releasing mechanism. This multi-functionality eliminates the need for separate dedicated components for acceleration control, reducing overall device complexity while the entire block is manufactured as a single precision component.
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
Enables the stopping of the first actuator's acceleration when the second actuator is operated, reducing the need for external piping and enhancing operational efficiency within the valve member block.
Implementation Method 1
a first actuator acceleration releasing mechanism is disposed in the valve member block, the first actuator acceleration releasing mechanism being configured to switch the first actuator accelerating valve from the accelerating position to the neutral position, when the second direction switching valve is operated
Data Source
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AI summary
The object of the present invention is to provide a multiple direction switching valve capable of stopping acceleration of a first actuator upon operation of a second actuator, without adding any outside pipe. A boom accelerating valve 4 is located in a valve member block 10, the boom accelerating valve 4 having an accelerating position 4a at which pressure oil from a second pump 52 is supplied to a boom hydraulic cylinder 55, and a neutral position 4b at which the pressure oil from the second pump 52 is not supplied to the boom hydraulic cylinder 55. In addition, a boom acceleration releasing mechanism is provided in the valve member block 10, the boom acceleration releasing mechanism being configured to return the boom accelerating valve 4 to the neutral position 4b from the accelerating position 4a, when an arm direction switching valve 2z is operated.