Hydraulic Lubricating Pump with Bypass Piston Reversal
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Solution Overview
Problem
Existing hydraulic percussion devices face challenges in efficiently conveying lubricants to lubricating points using pressurized hydraulic fluid, as they often require lower pressures and have complex piston arrangements that complicate the pump stroke mechanism.
Innovation Solution
A lubricating pump with a piston unit that includes a base body, a piston unit movable within the base body, and reversing means featuring groove-like recesses and elastic elements, allowing the piston unit to oscillate between closed and open positions to create a pump stroke, enabling efficient lubricant conveyance from a reservoir to lubricating points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a differential piston arrangement is used to convey lubricant with lower pressure, then the pressure requirement for lubricant conveyance is reduced, but the device complexity increases due to multiple piston stages
Solution Approach 1:
The invention extracts the pressure reduction function from a complex multi-stage piston arrangement and implements it through a single piston with a bypass connection. The bypass allows hydraulic fluid to act on the piston at reduced pressure, eliminating the need for multiple piston stages while achieving the same pressure reduction effect for lubricant conveyance.
Solution Approach 2:
The piston serves multiple functions: it acts as both a control element for hydraulic fluid and a drive element for lubricant conveyance. The bypass connection enables the piston to regulate pressure while the single-stage design simplifies the overall structure compared to multi-stage arrangements.
2Stress or pressure
If a complex piston arrangement is used for lubricant conveyance, then the pressure control is improved, but the manufacturing cost and complexity increase
Solution Approach 1:
The invention extracts the pressure control function from complex multi-stage piston arrangements and implements it through a single piston with a bypass connection. This simplifies manufacturing while maintaining effective pressure control for lubricant conveyance.
Solution Approach 2:
The bypass connection changes the pressure parameter by allowing hydraulic fluid to act on the piston at reduced pressure. This parameter change enables effective pressure control without requiring complex multi-stage piston arrangements, thereby simplifying manufacturing.
3Speed
If the piston stroke length is reduced for quick reversal, then the response time is improved, but the lubricant conveyance volume per stroke is reduced
Solution Approach 1:
The invention uses hydraulic fluid through a bypass connection to act on the piston, enabling quick reversal with short stroke length. The hydraulic pressure provides the force needed for rapid piston movement, improving response time while maintaining effective lubricant conveyance through the controlled pressure differential.
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 design allows for reliable and cost-effective operation by utilizing pressurized hydraulic fluid for both driving the device and conveying lubricants, with reduced piston stroke length and quick reversal movements, enhancing the efficiency and simplicity of lubricant distribution.
Implementation Method 1
at least one elastic element acting upon the piston unit in a first direction oriented toward the hydraulic inlet whereby the piston unit can be displaced in the base body in an oscillating fashion
Implementation Method 2
a supply line for pressurized hydraulic fluid, e.g., hydraulic oil, and with a lubricating pump that is connected to the supply line in a fluidic fashion
Data Source
AI summary
The invention relates to a hydraulic device with a supply line for pressurized hydraulic fluid and with a lubricating pump that is connected to the supply line in a fluidic fashion. The lubricating pump comprises a hydraulic inlet, a pump element for conveying a lubricant from a reservoir to at least one lubricating point of the hydraulic device, and mechanism for producing a pump stroke of the pump element. The mechanism for producing a pump stroke comprises a base body, a piston unit movable in the base body, and a reversing mechanism for reversing the direction of movement of at least one element of the piston unit. The reversing mechanism comprises at least one bypass formed by at least one recess, and at least one elastic element acting upon the piston unit in a first direction oriented toward the hydraulic inlet whereby the piston unit can be displaced in the base body in an oscillating fashion between a closed position in which a fluid connection between the hydraulic inlet and the hydraulic outlet is blocked, and an open position in which said fluid connection is unblocked in order to produce a pump stroke of the pump element.