Integrated Lubrication Valve Spool for Hydraulic Hammer
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lubrication systems for hydraulic and pneumatic tools, such as hydraulic hammers, are either machine-mounted and non-portable or externally mounted with exposed components prone to damage, lacking efficient lubrication distribution during tool operation.
Innovation Solution
A lubrication system with a valve spool that moves between tool-activated and tool-deactivated positions to control fluid flow and displace lubricant from a storage chamber to the tool's bearing surfaces, utilizing a dual-cartridge lubricant supply and integrated pumping mechanism activated by hydraulic fluid pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate machine-mounted lubrication system is used, then lubrication can be provided to the hammer, but the system does not move with the hammer when removed for use on another carrier machine
Solution Approach 1:
The lubrication system is merged with the hammer tool itself, integrating the lubricant storage chamber and pumping mechanism directly into the tool body. This integration ensures the lubrication system moves with the hammer when transferred between carrier machines, maintaining both reliability and portability.
Solution Approach 2:
The lubrication system is designed as a universal on-board system that can accompany the hammer across different carrier machines. The self-contained design with integrated components creates a multi-functional unit that serves both as a tool and a portable lubrication system.
2Adaptability or versatility
If an on-board lubrication system is mounted externally on the hammer, then the system moves with the hammer, but external hoses and components are exposed to damage during use
Solution Approach 1:
The lubrication components are merged into the internal structure of the hammer, eliminating external hoses and exposed components. The lubricant storage chamber and pumping mechanism are housed within the tool body, protecting them from damage while maintaining portability.
Solution Approach 2:
The lubrication system components are nested within the hammer structure. The lubricant storage chamber is positioned inside the tool body, and the pumping mechanism is integrated into the existing hydraulic valve spool assembly, creating a compact protected configuration.
3Ease of operation
If a separate pumping mechanism is added to the lubrication system, then lubricant can be distributed to the tool, but the system requires additional pumping power and components
Solution Approach 1:
The lubrication pumping function is merged with the existing hydraulic valve spool mechanism. The valve spool's movement during normal tool operation drives the lubricant pumping action through integrated check valves and passages, eliminating the need for a separate pumping mechanism and reducing overall system complexity.
Solution Approach 2:
The lubrication system uses the hammer's own operational movements to drive the lubricant distribution. The valve spool movement during normal tool cycling automatically pumps lubricant to the bearing surfaces without requiring external power or additional pumping components.
4Reliability
If lubrication is provided continuously during tool operation, then bearing surfaces are well-lubricated, but lubricant is wasted during periods when the tool is not in use
Solution Approach 1:
The lubrication system provides lubricant in periodic pulses synchronized with the tool's operational cycles. The valve spool movement during each tool cycle activates the pumping mechanism to deliver lubricant at appropriate intervals, rather than continuous flow, reducing waste while maintaining adequate lubrication during active use.
Solution Approach 2:
The lubrication system is designed to deliver lubricant in advance of when it is needed during the tool cycle. The pumping mechanism distributes lubricant to bearing surfaces before high-stress operations occur, ensuring protection is already in place rather than waiting for wear to begin.
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
Ensures consistent lubrication of hydraulic hammers without external hoses, reducing damage risk and extending lubricant life by integrating lubricant distribution with tool operation, ensuring reliable and portable lubrication without additional pumping power or components.
Implementation Method 1
utilizing a dual-cartridge lubricant supply and integrated pumping mechanism activated by hydraulic fluid pressure
Data Source
AI summary
A lubrication system for a hydraulic or pneumatic tool is described. The lubrication system includes a valve, a lubricant pumping mechanism and a lubricant storage chamber, the valve being adapted to move between a tool-deactivated position and a tool-activated position to cause the lubricant pumping mechanism to displace lubricant from the lubricant storage chamber. A method of distributing lubricant to a hydraulic or pneumatic tool is also described.