An active micro-redundant lubrication mechanism for bearings based on a valveless piezoelectric micropump
A lubricating mechanism and micro-pump technology, which is applied in the direction of engine lubrication, lubricating pumps, engine components, etc., can solve the problems of complex structure, difficult to embed, and large space occupied by active lubricating mechanisms, and achieve simple structure, fast lubrication response, small size effect
Active Publication Date: 2021-01-05
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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specific Embodiment approach 1
[0021] Specific implementation mode one: combine Figure 1~3 Describe this embodiment, an active micro-redundant lubrication mechanism for bearings based on a valveless piezoelectric micropump, 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 section 1-1 and the second shaft section 1-2, the bearing assembly 2 and the two sets of lubricating assemblies 3 are fitted on the second shaft section 1-2, and the two sets of lubricating assemblies 3 are respectively arranged on the bearing assembly 2 ends,
[0022] Each group of lubricating components 3 includes a micropump inlet cover 3-1, a micropump outlet cover 3-2, a micropump cavity 3-3, a copper substrate 3-4, piezoelectric ceramics 3-5, and several oil delivery pipes 3-6 and several inner oil guide pipes 3-7, including micropump inlet cover 3-1, micropump outlet cover 3-2, micropump cavity 3-3, copper substrate 3-4 and piezoelec...
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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 an active micro-redundant lubrication mechanism for bearings based on a valveless piezoelectric micro-pump, and belongs to the technical field of active micro-redundant lubrication. Background technique [0002] Bearing systems widely exist in general mechanical equipment. Bearings that use oil lubrication often suffer from wear and failure when they work for a long time without oil replenishment. Compared with the passive oil supply method, which is volatile, easy to deteriorate, and difficult to control, etc. Disadvantages, 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, it is difficult for the traditional actuation method to achieve high oil supply volume control accuracy, and the existing active oil replenishment lubrication mechanism has a complex struc...
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