Hydraulic Spool Valve for Vibratory Compactor Base Plate Locking
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Solution Overview
Problem
Existing vibratory compactors with removable base plates require complex and costly locking mechanisms that involve additional hydraulic connectors, lines, and control valves, increasing operational complexity and costs, and necessitate separate control inputs for locking and unlocking the base plate.
Innovation Solution
A hydraulic control circuit with a pilot-pressure-actuated, 2-position spool valve that alternately locks and unlocks the base plate using a single control input, directing the flow of pressurized hydraulic fluid to integrate locking and unlocking functions with the vibratory mechanism's operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate hydraulic control system with multiple valves and connectors is used to lock and unlock the base plate, then the base plate can be securely locked during operation, but the device complexity and operational complexity increase significantly
Solution Approach 1:
The patent combines the base plate locking function with the vibratory mechanism control into a single hydraulic control system. The directional control valve that operates the hydraulic motor for vibration also controls the locking actuator, eliminating the need for separate control valves and hydraulic lines. This merging reduces device complexity while maintaining reliable locking through the integrated control architecture.
Solution Approach 2:
The hydraulic control system is designed to perform multiple functions through a single control input. The directional control valve simultaneously manages both the vibratory mechanism operation and the base plate locking/unlocking operations. This multi-functionality reduces the number of components and simplifies the overall system while ensuring reliable base plate securing during vibratory operation.
2Reliability
If additional hydraulic connectors, lines, and control valves are added for base plate locking, then the locking function is achieved, but the manufacturing cost and operational cost increase
Solution Approach 1:
The patent merges the locking mechanism with existing hydraulic components, using the same directional control valve and hydraulic lines that operate the vibratory mechanism. This eliminates the need for additional hydraulic connectors, separate control valves, and extra hydraulic lines, thereby reducing manufacturing costs while maintaining reliable base plate locking functionality.
Solution Approach 2:
The hydraulic control system is designed to perform multiple functions through a single control input. The directional control valve simultaneously manages both the vibratory mechanism operation and the base plate locking/unlocking operations. This multi-functionality reduces the number of components and simplifies the overall system while ensuring reliable base plate securing during vibratory operation.
3Reliability
If separate control inputs are required for locking and unlocking the base plate, then precise control is achieved, but the ease of operation decreases
Solution Approach 1:
The patent combines the locking and unlocking control functions into a single control mechanism. The directional control valve that operates the hydraulic motor for vibration also controls the locking actuator through the same valve. This integration allows the operator to control both locking and unlocking through the existing vibration control input, simplifying operation while maintaining precise control through the hydraulic system's inherent control characteristics.
Solution Approach 2:
The hydraulic control system is designed to perform multiple functions through a single control input. The directional control valve simultaneously manages both the vibratory mechanism operation and the base plate locking/unlocking operations. This multi-functionality reduces the number of components and simplifies the overall system while ensuring reliable base plate securing during vibratory operation.
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
Simplifies the locking mechanism by allowing the direction of hydraulic fluid flow to control both the locking and unlocking of the base plate, reducing operational complexity and costs while maintaining efficient operation of the vibratory compactor.
Implementation Method 1
a spool valve configured to move to a first position when pressurized hydraulic fluid from the source is supplied to the spool valve in a first direction, and move to a second position when the pressurized hydraulic fluid from the source is supplied to the spool valve in a second direction
Implementation Method 2
a locking actuator configured to alternately lock and unlock the base plate relative to the vibratory compactor
Implementation Method 3
pressurized hydraulic fluid flows through the spool valve and through a second flow passage to a hydraulic motor configured to power the vibratory compactor
Data Source
AI summary
A locking mechanism for a base plate of a vibratory compactor includes a locking actuator configured to alternately lock and unlock the base plate relative to the vibratory compactor, and a hydraulic control circuit in fluid communication with a source of pressurized hydraulic fluid and the locking actuator. The hydraulic control circuit includes a hydraulic pilot-pressure-actuated, 2-position spool valve, wherein the spool valve is configured to move to a first position when pressurized hydraulic fluid from the source is supplied to the spool valve in a first direction, and move to a second position when the pressurized hydraulic fluid from the source is supplied to the spool valve in a second direction. In the first position of the spool valve the pressurized hydraulic fluid moves the locking actuator to a locked position, and after the locking actuator is in the locked position, the pressurized hydraulic fluid operates a hydraulic motor configured to power the vibratory compactor. In the second position of the spool valve the pressurized hydraulic fluid moves the locking actuator to an unlocked position.