Hydraulic Pump De-blocking Device with Actuating Plunger
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Solution Overview
Problem
Hydraulic pump rotors often become blocked due to contamination, requiring manual intervention which can be cumbersome and inefficient, as existing de-blocking methods lack a reliable and efficient mechanism for axial and rotational movement to clear blockages.
Innovation Solution
A de-blocking device comprising a can with a conduit, a bearing, a plunger, and a biasing element, where the plunger's axial movement compresses the biasing element to apply a force to the rotor shaft, allowing for both axial and rotational de-blocking actions through a tool-engagable slot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual screw mechanism is used to unblock the rotor, then the de-blocking function is achieved, but the operation becomes cumbersome and inefficient
Solution Approach 1:
The patent replaces the manual screw mechanism with an electrically driven actuating device. The actuating pin is moved by an electric motor through a gear mechanism, automating the de-blocking process and eliminating the need for manual screw rotation, thereby improving ease of operation and reducing time loss.
Solution Approach 2:
The de-blocking device is designed to be activated through an electrical control system that automatically performs the de-blocking action without requiring manual intervention. The system can detect when de-blocking is needed and execute the process autonomously, reducing operational complexity and time requirements.
2Productivity
If an electrically driven actuating device is implemented, then de-blocking efficiency is improved, but device complexity increases
Solution Approach 1:
The actuating pin serves multiple functions: it can be moved axially to apply linear force for de-blocking, rotated to apply torque for rotational de-blocking, and positioned in different locations along the rotor shaft. This multi-functionality reduces the need for separate mechanisms, thereby improving productivity while limiting the increase in device complexity.
Solution Approach 2:
The patent introduces a gear mechanism as an intermediary between the electric motor and the actuating pin. This gear system translates rotational motor motion into the required axial and rotational movements of the pin, simplifying the overall control system while maintaining high de-blocking efficiency.
3Ease of operation
If the actuating pin is accessible from the outside through a channel, then ease of operation is improved, but the structural design becomes more complex
Solution Approach 1:
The housing is segmented to include a dedicated access channel that separates the actuating mechanism from the main rotor assembly. This allows the actuating pin to be accessed from the outside through a controlled pathway, improving ease of operation while containing the structural complexity to a specific, manageable region of the housing design.
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 efficient and effective de-blocking of hydraulic pump rotors by applying a controlled axial and rotational force, improving the reliability and ease of maintenance by allowing external actuation to clear blockages without manual labor.
Implementation Method 1
a biasing element positioned between the bearing and the plunger wherein the movement of the plunger toward the bearing compresses the biasing element
Data Source
AI summary
A de-blocking device for a hydraulic pump includes a can having a longitudinal axis and a conduit extending longitudinally along the longitudinal axis and having a first terminal aperture. The device further includes a bearing fixedly positioned in the conduit spaced from the first terminal aperture, and a plunger axially movably positioned in the conduit between the bearing and the first terminal aperture. A biasing element is positioned between the bearing and the plunger wherein the movement of the plunger toward the bearing compresses the biasing element.