Lubricating Device Reversing Piston Dosing Precision
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Solution Overview
Problem
Existing lubricating devices are complex and expensive, with difficulty in accurately delivering a specified quantity of lubricant due to their structure.
Innovation Solution
A lubricating device with a dosing piston/cylinder configuration and a reversing piston that creates an annular space for fluid connection between the feed pump, dosing chamber, and lubricant discharge channel, allowing precise dosing under pressure, and a catch arm mechanism for automatic guidance and sealing onto migrating lubrication sites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a known lubricating device structure is used, then the device is reliable in function, but the production cost is relatively expensive and dosing precision is difficult to achieve
Solution Approach 1:
The device is segmented into distinct functional modules: a dosing piston/cylinder configuration for precise volume measurement, a reversing piston for fluid path control, and a lubricant discharge body for delivery. This segmentation allows each component to perform its specific function efficiently, reducing overall structural complexity while maintaining reliability
Solution Approach 2:
The reversing piston acts as an intermediary element that controls the fluid connection between the feed pump, dosing chamber, and lubricant discharge channel. By using this intermediate component, the patent achieves precise dosing control without requiring complex valve mechanisms or multiple moving parts
2Reliability
If a known lubricating device structure is used, then the device is reliable in function, but the production cost is relatively expensive
Solution Approach 1:
The reversing piston serves multiple functions: it controls fluid path switching, acts as a sealing element, and defines the dosing chamber volume. This multi-functionality reduces the number of separate components needed, simplifying manufacturing and reducing production costs while maintaining reliable operation
Solution Approach 2:
The dosing piston and reversing piston are combined within a single cylinder configuration, sharing common sealing surfaces and fluid pathways. This merging of functions into a compact assembly reduces manufacturing steps, lowers production costs, and maintains functional reliability through integrated design
3Productivity
If a known lubricating device structure is used, then the device operates, but the dosing of lubricant quantity is difficult to control precisely
Solution Approach 1:
The patent replaces complex mechanical dosing mechanisms with a dosing piston/cylinder configuration that uses fluid pressure to control lubricant delivery. The dosing volume is precisely controlled by the piston displacement, which can be regulated through pressure control rather than complex mechanical linkages, achieving both precision and reliability
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 reliable, precise, and cost-effective delivery of a predetermined lubricant quantity to migrating lubrication sites, with improved efficiency and reduced complexity.
Implementation Method 1
The lubricant discharge body is stayed via a reset spring on the base body, which presses the lubricant discharge body in the direction of a forwardly advanced standby position
Implementation Method 2
a particular precisely dosed lubricant quantity is delivered from the lubricant discharge body under the action of pressure of the feed pump
Implementation Method 3
the quantity of lubricant provided for delivery can be transported by means of a dosing piston acted upon by the feed pump from the dosing chamber in the direction toward the annular space
Implementation Method 4
the reversing piston can be stayed on a reset spring, which, after the completion of the lubrication process, advances the reversing piston from its release position
Data Source
AI summary
The invention relates to a lubricating device, particularly for use in an apparatus which is used to lubricate mobile lubrication points e.g. on a rotating belt or chain belt. A lubricant discharge body of a lubricating head, which when lubricant is conveyed by a feed pump into a dosing chamber which is separated from the lubricant discharge channel, is placed in a front standby position and, counter to the effect of a restoring force, is moved into a locking and lubricant release position wherein the link between the pump and the dosing chamber is blocked by a reversing piston and the dosing chamber is fluidic ally connected to the lubricant discharge channel and a predefined volume of lubricant can be pumped out of the dosing chamber into the lubricant discharge channel. The lubricant discharge body cooperates with a reversing piston in such a way that the feed pump is fluidic ally connected to the dosing chamber of a dosing piston/cylinder arrangement via an annular area of the reversing piston when the lubricant discharge body is located in a front standby position, and such that the dosing chamber is fluidically connected to the lubricant discharge channel via the angular area when the lubricant discharge body is placed in a retracted position in which the lubricant is released. The reversing piston blocks the fluidic connection between the feed pump and the dosing chamber such that the amount of lubricant provided for discharge can be pumped out of the dosing chamber in the direction of the annular area by a dosing piston which is impinged upon by the feed pump.