CN213840426U - Lubricating structure for transmission shaft of cycloidal pump at high rotating speed - Google Patents
Lubricating structure for transmission shaft of cycloidal pump at high rotating speed Download PDFInfo
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- CN213840426U CN213840426U CN202022529378.4U CN202022529378U CN213840426U CN 213840426 U CN213840426 U CN 213840426U CN 202022529378 U CN202022529378 U CN 202022529378U CN 213840426 U CN213840426 U CN 213840426U
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- distribution disc
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Abstract
The utility model belongs to mechanical structure designs the field. Relates to a lubricating structure of a transmission shaft of a cycloid pump at a high rotating speed. A front oil distribution pan lubrication structure, wherein the front oil distribution pan lubrication structure comprises: the high-pressure area oil discharge groove, the inclined hole groove, the annular groove and the hole are formed in the middle section of the side wall of the shaft sleeve; the annular groove is arranged on the contact surface of the oil distribution disc and the shaft sleeve and is positioned at the same height with the hole; the inclined hole groove penetrates through the oil distribution disc to communicate the oil discharge groove of the high-pressure area with the annular groove. By adopting the lubricating structure, the lubricating medium can more quickly and fully reach the moving part needing lubrication in the working process of the transmission shaft, and the friction resistance and the loss generated between the moving parts are reduced.
Description
Technical Field
The utility model belongs to the technical field of the design of cycloid pump, concretely relates to cycloid pump transmission shaft lubricating structure under high rotational speed.
Background
Aircraft engines are currently moving toward high speed, small size, high temperature and light weight. The lubricating oil pump is used as an important component of a lubricating oil system in an engine, is mainly used for conveying and recovering lubricating oil of a bearing and a transmission gear part of the engine, has a self lubricating effect, and has important significance on the service life and the performance of a product. In the product design in the past, the lubricating oil medium provides lubricated effect through the terminal surface clearance in the cycloid pump and radial clearance flow direction motion position, and under low rotational speed, frictional resistance is less relatively, and the loss of production is less relatively, nevertheless under high rotational speed, frictional resistance increase, aggravates the lubricating oil pump loss, the greatly reduced lubricating oil pump's life.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the lubricating structure of the transmission shaft of the cycloid pump at the high rotating speed is provided, so that the cycloid pump can be fully lubricated between moving parts at the high rotating speed, the friction loss is reduced, and the service life of a product is prolonged.
The technical scheme of the utility model is that:
in a first aspect, a lubricating structure for a transmission shaft of a gerotor pump at a high rotation speed comprises a front oil distribution disc lubricating structure, wherein the front oil distribution disc lubricating structure comprises: the high-pressure area oil discharge groove, the inclined hole groove, the annular groove and the hole are formed in the middle section of the side wall of the shaft sleeve; the annular groove is arranged on the contact surface of the oil distribution disc and the shaft sleeve and is positioned at the same height with the hole; the inclined hole groove penetrates through the oil distribution disc to communicate the oil discharge groove of the high-pressure area with the annular groove.
Further, still include the lubricated structure of back oil distribution pan, back oil distribution pan lubricated structure includes: the high-pressure area oil discharge groove, the inclined hole groove, the annular groove and the hole are formed in the middle section of the side wall of the shaft sleeve; the annular groove is arranged on the contact surface of the oil distribution disc and the shaft sleeve and is positioned at the same height with the hole; the inclined hole groove penetrates through the oil distribution disc to communicate the oil discharge groove of the high-pressure area with the annular groove.
Further, the processing direction of the inclined hole groove of the front oil distribution disc lubricating structure faces to the outlet of the high-pressure area oil drainage groove.
Further, the processing direction of the inclined hole groove of the rear oil distribution disc lubricating structure faces to the outlet of the high-pressure area oil drainage groove.
Further, the size of the hole in the front oil distribution pan lubricating structure is
To
Further, the hole in the rear oil distribution pan lubricating structure has a size of
To
The technical effects of the utility model are that: by adopting the lubricating structure, the lubricating medium can more quickly and fully reach the moving part needing to be lubricated in the working process of the transmission shaft, so that the frictional resistance and the loss generated between the moving parts are reduced, and the service life of a product is prolonged.
Drawings
FIG. 1 is a schematic view of an application of a slotted, perforated oil distribution disc and a shaft sleeve in a lubricating oil pump;
FIG. 2 is a front view and a cross-sectional view of a slotted, perforated oil distribution disc and a shaft sleeve;
fig. 3 is a schematic view of the sleeve after punching.
Wherein, 1, the front of the transmission shaft 2 is provided with an oil pan 3, the rear of the shaft sleeve 4 is provided with an oil discharge groove 2-1 of the oil pan 2-1 in the high pressure area, and the hole 3-1 is provided with an annular groove 2-2 and an inclined hole groove 2-3.
Detailed Description
The utility model provides a cycloid pump transmission shaft lubricating structure under high rotational speed, include and join in marriage food tray lubricating structure before, wherein, join in marriage food tray lubricating structure before and include: the high-pressure area oil discharge groove, the inclined hole groove, the annular groove and the hole are formed in the middle section of the side wall of the shaft sleeve; the annular groove is arranged on the contact surface of the oil distribution disc and the shaft sleeve and is positioned at the same height with the hole; the inclined hole groove penetrates through the oil distribution disc to communicate the oil discharge groove of the high-pressure area with the annular groove.
The lubricating structure of the rear oil distribution disc can be the same as that of the front oil distribution disc.
The processing direction of the inclined hole groove of the front oil distribution disc lubricating structure faces to the outlet of the high-pressure area oil discharge groove.
The processing direction of the inclined hole groove of the rear oil distribution disc lubricating structure faces to the outlet of the high-pressure area oil discharge groove.
The size of the hole in the front oil distribution plate lubricating structure is
To
The size of the hole in the lubricating structure of the rear oil distribution plate is
To
The working principle is as follows:
when the transmission shaft starts to work, a lubricating oil medium enters the inside of the pump body and is divided into a high-pressure area oil discharge groove and a low-pressure area oil suction groove on the oil distribution disc, and the lubricating medium in the high-pressure area oil discharge groove is pressed into the flow channel due to pressure difference and flows to the annular groove of the oil distribution disc to provide lubrication for the shaft sleeve and the oil distribution disc and protect the oil distribution disc and the shaft sleeve; meanwhile, the lubricating oil is gathered at the ring belt of the oil distribution disc and flows into the friction part of the transmission shaft and the shaft sleeve through the small hole on the bearing to provide lubrication, protect the transmission shaft and the bearing and finish the whole working process.
Specifically, as shown in fig. 1 to 2, under the high-speed motion of the cycloid pump, the pressure of an oil discharge groove on the oil distribution disc 2 is increased to form an oil discharge groove 2-1 in a high-pressure area, and a lubricating oil medium is pressed into an inclined hole groove 2-2 due to pressure difference and flows into an annular groove 2-3 at a central hole of the oil distribution disc 2 to complete the lubrication action between the shaft sleeve 3 and the oil distribution disc 2; through the small hole 3-1 on the shaft sleeve 3, the lubricating oil medium flows into the contact surface of the transmission shaft 1 and the shaft sleeve 3, and the lubricating protection effect is completed.
The oil distribution disc and the shaft sleeve are in interference connection, relative movement is generated between the oil distribution disc and the shaft sleeve, and the position of the oil distribution disc is fixed and unchanged. The small hole of the shaft sleeve is arranged at the middle height position of the shaft sleeve, and is generally
The annular groove on the central hole of the oil distribution disc is required to correspond to the small hole on the shaft sleeve.
Claims (6)
1. A lubricating structure of a transmission shaft of a cycloid pump at a high rotating speed is characterized by comprising a front oil distribution disc lubricating structure, wherein the front oil distribution disc lubricating structure comprises: the high-pressure area oil discharge groove, the inclined hole groove, the annular groove and the hole are formed in the middle section of the side wall of the shaft sleeve; the annular groove is arranged on the contact surface of the oil distribution disc and the shaft sleeve and is positioned at the same height with the hole; the inclined hole groove penetrates through the oil distribution disc to communicate the oil discharge groove of the high-pressure area with the annular groove.
2. The structure of claim 1, further comprising a rear oil pan lubrication structure, the rear oil pan lubrication structure comprising: the high-pressure area oil discharge groove, the inclined hole groove, the annular groove and the hole are formed in the middle section of the side wall of the shaft sleeve; the annular groove is arranged on the contact surface of the oil distribution disc and the shaft sleeve and is positioned at the same height with the hole; the inclined hole groove penetrates through the oil distribution disc to communicate the oil discharge groove of the high-pressure area with the annular groove.
3. The structure of claim 1, wherein the inclined hole groove of the front oil distribution pan lubrication structure is formed toward the outlet of the high-pressure-zone oil drain groove in a machine direction.
4. The structure of claim 2, wherein the inclined hole groove of the rear oil distribution pan lubrication structure is formed toward the outlet of the high-pressure-zone oil drain groove in the machine direction.
5. The structure of claim 2, wherein the size of the hole in the front drip pan lubricating structure is
To
6. The structure of claim 2, wherein the size of the hole in the rear oil pan lubrication structure is
To
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022529378.4U CN213840426U (en) | 2020-11-03 | 2020-11-03 | Lubricating structure for transmission shaft of cycloidal pump at high rotating speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022529378.4U CN213840426U (en) | 2020-11-03 | 2020-11-03 | Lubricating structure for transmission shaft of cycloidal pump at high rotating speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213840426U true CN213840426U (en) | 2021-07-30 |
Family
ID=77013708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022529378.4U Active CN213840426U (en) | 2020-11-03 | 2020-11-03 | Lubricating structure for transmission shaft of cycloidal pump at high rotating speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213840426U (en) |
-
2020
- 2020-11-03 CN CN202022529378.4U patent/CN213840426U/en active Active
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