Bearing active micro redundant lubricating mechanism based on valveless piezoelectric micropump
A lubricating mechanism and micro-pump technology, applied in the direction of engine lubrication, lubricating pump, engine components, etc., can solve the problems of complex structure of active lubricating mechanism, difficult to embed, occupying a large space and other problems, and achieve simple structure, fast lubrication response, Small size effect
Active Publication Date: 2019-09-06
HARBIN INST OF TECH
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem that the existing active lubrication mechanism has a complex structure and is difficult to embed into the bearing system; and the existing active micro-redundant lubrication based on piezoelectric micro-jet requires a relatively complex back pressure system and occupies a large space , and then provides an active micro-redundant lubrication mechanism for bearings based on a valveless piezoelectric micropump
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[0021] Embodiment 1: Combining Figure 1~3 Illustrating this embodiment, a bearing active micro-redundant lubrication mechanism based on a valveless piezoelectric micro-pump, which includes a mandrel 1, a bearing assembly 2 and two sets of lubrication assemblies 3, the mandrel 1 includes a coaxially fixed first The shaft segment 1-1 and the second shaft segment 1-2, the bearing assembly 2 and the two sets of lubricating assemblies 3 are fitted on the second shaft segment 1-2, and the two sets of lubricating assemblies 3 are respectively arranged on the bearing assemblies 2 ends,
[0022] Each group of the lubricating components 3 includes a micro-pump inlet end cover 3-1, a micro-pump outlet end cover 3-2, a micro-pump cavity 3-3, a copper base 3-4, piezoelectric ceramics 3-5, and a number of oil pipes 3-6 and several inner oil guide pipes 3-7, among which the inlet end cover of the micro pump 3-1, the outlet end cover of the micro pump 3-2, the micro pump cavity 3-3, the cop...
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The invention discloses a bearing active micro redundant lubricating mechanism based on a valveless piezoelectric micropump, and belongs to the technical field of active micro redundant lubricating. The problems that an existing active lubricating mechanism is complex in structure and can be hardly embedded into a bearing system, existing active micro redundant lubricating based on piezoelectric microjet needs a quite complex backpressure system, and the size of occupied space is large are solved. Annular oil troughs are coaxially formed in the bottoms of annular locating troughs. Multiple through holes are formed in each micropump inlet end cover in the circumferential direction of the micropump inlet end cover. Micropump outlet end covers and the micropump inlet end covers are the same in structure and are arranged oppositely. Micropump cavities are arranged between the annular locating troughs in the micropump inlet end coverss and the annular locating troughs in the micropump outlet end covers. Copper matrixes and piezoelectric ceramic are sequentially and coaxially arranged on the micropump cavities in a sleeving manner from inside to outside. The multiple through holes in themicropump outlet end covers correspondingly communicate with a bearing assembly through multiple inner oil conduction pipes. The bearing assembly and two sets of lubricating assemblies achieve axiallocating through fastening nuts and the end face of a first shaft segment.
Description
technical field [0001] The invention relates to a bearing active micro-redundant lubrication mechanism based on a valveless piezoelectric micro-pump, belonging to the technical field of active micro-redundant lubrication. Background technique [0002] Bearing systems are widely found in general mechanical equipment. Bearings that use oil lubrication will often wear and fail when they work for a long time without oil replenishment. Compared with passive oil supply, they are volatile, perishable, and difficult to control. The disadvantage is that active oil replenishment is currently widely used in aerospace and other fields where manual oil replenishment is not easy. Due to the small amount of oil replenishment required for a single time after the bearing fails, the traditional actuation method is difficult to achieve high oil supply volume control accuracy, and the existing active oil replenishment lubrication mechanism has a complex structure and is difficult to embed into ...
Claims
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IPC IPC(8): F16N7/38F16N13/00F04B43/04
CPCF04B43/046F16N7/38F16N13/00
Inventor 李锴刘军考陈维山刘英想李恒禹王润举
Owner HARBIN INST OF TECH