Coupling Socket Indirect Lubrication Valve Design
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Solution Overview
Problem
Existing coupling socket designs require separate lubrication of the coupling ball and hold-down device contact areas, leading to high processing and maintenance costs, and risk contamination of the clutch contact area when attempting to lubricate the hold-down contact area.
Innovation Solution
A coupling socket with a channel connecting the clutch contact area to the hold-down contact area, featuring a valve that allows lubricant to flow from the clutch side to the hold-down side while preventing flow in the opposite direction, ensuring the hold-down contact area is lubricated without contaminating the clutch system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate lubrication devices are provided for the coupling ball and hold-down device contact areas, then reliable lubrication is achieved, but processing and maintenance costs increase
Solution Approach 1:
The patent merges the lubrication systems for the coupling ball contact area and hold-down device contact area into a single integrated system. A common lubrication chamber connects both contact areas through channels, allowing one grease nipple to supply lubricant to both locations simultaneously, thereby reducing the number of lubrication devices and lowering maintenance costs while maintaining reliable lubrication.
Solution Approach 2:
The common lubrication chamber serves multiple functions: it stores lubricant for both contact areas, distributes lubricant through multiple channels to different contact points, and provides a single access point (grease nipple) for lubrication. This multi-functional design eliminates the need for separate lubrication systems while ensuring both contact areas receive adequate lubrication.
2Ease of operation
If the hold-down device is designed to be hollow with a grease nipple for lubrication, then the hold-down contact area can be lubricated, but contamination risk of the clutch contact area increases
Solution Approach 1:
The patent incorporates a valve in the channel that is normally closed to prevent contamination before lubrication is needed. When lubricant is introduced through the grease nipple, the pressure opens the valve to allow lubricant flow to the hold-down contact area. After lubrication, the valve closes again to seal the clutch contact area from potential contaminants, thus preventing contamination while maintaining ease of lubrication.
Solution Approach 2:
The valve acts as an intermediary element between the clutch contact area and the hold-down device contact area. It controls the flow of lubricant through the channel, opening only when lubricant pressure is applied and closing when pressure is released. This intermediary mechanism allows lubrication access while maintaining separation and preventing contamination of the clutch contact area.
3Adaptability or versatility
If a spring-loaded ball valve is used, then the valve can be opened by lubricant pressure, but at cold temperatures the spring compression may close the valve even under pressure
Solution Approach 1:
The patent changes the valve element material from a spring-loaded ball to an elastomeric material whose elasticity is less sensitive to temperature variations. This elastomeric valve element maintains its ability to close the valve under normal conditions but opens reliably when lubricant pressure is applied, even at cold temperatures where spring-loaded valves would fail due to increased spring stiffness and reduced lubricant pressure.
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 solution reduces maintenance costs and prevents contamination by allowing lubricant from the clutch contact area to reach the hold-down contact area, ensuring reliable lubrication with minimal pressure requirements and effective sealing against dirt and moisture.
Implementation Method 1
a valve element (52) held on a valve body (50), which in its valve-closing configuration closes the channel (40)
Implementation Method 2
The valve element deforms from its valve-closing configuration to its valve-opening configuration under the action of a force caused by the lubricant pressure acting on a surface of the valve element
Implementation Method 3
an elastic valve element held by it, which exerts force against a restoring force caused by its material elasticity from a valve-closing configuration in which the channel is interrupted by the valve element
Data Source
Figure 1
Figure 2
AI summary
The coupling socket (10) has a concave coupling system area (22) at a coupling side (18), and is penetrated from a channel (40). The channel connects the coupling system area and a blank holder contact area (26). A valve (42) is provided in the channel for lubricant flow from the coupling side.