CN218177290U - Air motor - Google Patents
Air motor Download PDFInfo
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- CN218177290U CN218177290U CN202222505055.0U CN202222505055U CN218177290U CN 218177290 U CN218177290 U CN 218177290U CN 202222505055 U CN202222505055 U CN 202222505055U CN 218177290 U CN218177290 U CN 218177290U
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- air
- main shaft
- casing
- radial bearing
- air motor
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Abstract
The utility model discloses an air motor, including casing and main shaft, outside the one end of main shaft passed the casing and stretched out the casing, installed first journal bearing and second journal bearing between main shaft and the casing, there was the cover plate that is used for first journal bearing closing cap through bolt fixed mounting in the casing, and the annular of main shaft is sheathe in and is fixed the cover and is equipped with the turbine. The utility model discloses air vent on the casing, the orifice on the journal bearing and the air duct on the main shaft annular cover form airflow channel, and the pressure gas that is provided by outside air supply enters into the gap of main shaft and journal bearing through the orifice on the journal bearing after passing through the air vent, and gas has formed the air film in the gap, and the air film that has pressure props up the main shaft, and whole process does not need lubricating oil, adopts gas to lubricate; therefore the utility model discloses air motor simple structure, gaseous lubricated and the drive spindle rotates, and its is clean, pollution-free, the temperature rise is little, heat radiation structure is good.
Description
Technical Field
The utility model relates to an air motor technical field, concretely relates to air motor.
Background
The air motor is a device for converting pressure energy of compressed air into mechanical energy of rotation, and is most widely used in pneumatic transmission as a vane type.
However, the existing air motor needs to be lubricated by adding lubricating oil, and during the high-speed operation of the air motor, the consumption speed of the lubricating oil is extremely high, but the lubricating oil is very troublesome to add, so that the lubricating oil is inconvenient for workers to apply; in addition, the existing air motor has large temperature rise and poor heat dissipation structure in high-speed operation, directly causes the power of the air motor to be limited, directly reduces the application field of the air motor, and cannot be applied to the fields of precise fine grinding, fine drilling, fine mirror milling and the like.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing an air motor, which solves the problem that the prior air motor needs to be lubricated by adding lubricating oil, which causes the inconvenience of applying the lubricating oil by workers; the problems of large temperature rise and poor heat dissipation structure of the existing air motor are also solved.
The technical scheme is as follows: the utility model relates to an air motor, including casing and main shaft, outside the one end of main shaft passed the casing and stretched out the casing, installed first journal bearing and second journal bearing between main shaft and the casing, there is the cover plate that is used for first journal bearing closing cap through bolt fixed mounting in the casing, fixed cover is sheathe in to the annular of main shaft and is equipped with the turbine, and the main shaft is kept away from the one end of second journal bearing and is installed the axle sleeve, terminal surface and the gas cell board fixed connection that the casing is close to the cover plate, gas cell board and end cover fixed connection, end cover and axle sleeve looks block.
Furthermore, the shell, the main shaft, the air groove plate and the end cover are all coaxially arranged.
Further, a cavity is formed among the shell, the main shaft, the air groove plate and the end cover, and the turbine is located in the cavity. The cavity is convenient for collecting the generated hot air, and the hot air is discharged through the exhaust hole, so that the temperature rise of the air motor is small.
Furthermore, a distance block is fixedly arranged between the shell and the air groove plate.
Furthermore, the first radial bearing and the second radial bearing are fixedly connected with the shell through pins.
Furthermore, the shell is provided with a plurality of first vent holes, the first radial bearing is provided with a plurality of first throttling holes, and the second radial bearing is provided with a plurality of second throttling holes. After passing through the vent hole, the pressure gas provided by the external gas source enters the gap between the main shaft and the radial bearing through the orifice hole on the radial bearing, the gas forms a gas film in the gap, and the gas film with pressure supports the main shaft.
Furthermore, a second vent hole is formed in the end cover and communicated with an air inlet channel on the air trough plate, and the turbine rotates due to air flow of the air inlet channel; and the end cover is provided with a first air outlet hole which is communicated with an air outlet channel on the air trough plate. After the vent hole enters stable pressure gas, the turbine can be driven to rotate, so that the main shaft rotates.
Furthermore, still be equipped with a plurality of first exhaust holes on the end cover, first exhaust hole and the second exhaust hole one-to-one on the gas groove board and communicate with each other, the second exhaust hole on the gas groove board communicates with each other with the cavity. The cavity is communicated with the exhaust hole, so that the hot air is conveniently discharged.
Furthermore, the main shaft and the annular sleeve of the main shaft are of an integrally formed structure.
Furthermore, air guide holes for air flow to pass through are formed in the annular sleeve of the main shaft in a circumferential array.
Has the advantages that: the utility model discloses air vent on the casing, the orifice on the journal bearing and the air duct on the main shaft annular cover form airflow channel, after the pressure gas that is provided by outside air supply passes through the air vent, get into the gap of main shaft and journal bearing by the orifice on the journal bearing again, gas has formed the air film in the gap, and the air film that has pressure props up the main shaft, enters atmospheric pressure from the end face portion of axle sleeve through the air duct, and whole process does not need lubricating oil, adopts gas to lubricate; after stable pressure gas enters the vent holes in the end cover, the stable pressure gas enters the gas inlet channel on the gas trough plate, the gas flow of the gas inlet channel enables the turbine to rotate, and the generated high-temperature gas is discharged out through the exhaust holes, so that the temperature rise of the air motor is small, and the heat dissipation structure is good; therefore the utility model discloses air motor simple structure, gas lubricate and the drive spindle rotates, and its is clean, pollution-free, the temperature rise is little, heat radiation structure is good.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view of the present invention;
FIG. 3 is a schematic view of the housing structure;
FIG. 4 is a schematic view of an end cap configuration;
FIG. 5 is a schematic view of a gas tank plate structure;
FIG. 6 is a schematic view of a spacer structure;
FIG. 7 is a schematic view of a turbine configuration;
FIG. 8 is a schematic view of the spindle configuration;
FIG. 9 is a schematic view of a spindle, a first radial bearing and a second radial bearing mounting arrangement;
FIG. 10 is a schematic view of a bushing structure;
fig. 11 is a cross-sectional view of the end cap.
Detailed Description
The invention will be further described with reference to the following figures and examples:
as shown in fig. 1 to 11, the present invention relates to an air motor, including a housing 1 and a main shaft 2, one end of the main shaft 2 passes through the housing 1 and extends out of the housing 1, the housing 1 and the main shaft 2 are coaxially disposed, a first radial bearing 3 and a second radial bearing 4 are installed between the main shaft 2 and the housing 1, the first radial bearing 3 and the second radial bearing 4 are both fixedly connected with the housing 1 through pins, the first radial bearing 3 and the second radial bearing 4 are both air hydrostatic bearings, a cover plate 5 for sealing the first radial bearing 3 is installed in the housing 1 through bolts, the cover plate 5 can also be replaced by an axial bearing with the same function, a turbine 6 is fixedly sleeved on the annular sleeve 201 of the main shaft 2, the main shaft 2 and the annular sleeve 201 of the main shaft 2 are in an integrally formed structure, a shaft sleeve 7 is installed at one end of the main shaft 2 far away from the second radial bearing 4, an end surface of the housing 1 close to the cover plate 5 is fixedly connected with an air groove plate 8, the air groove plate 8 is fixedly connected with an end cover plate 9, the end cover plate 9 is fixedly connected with the end plate 9, the end plate 9 is engaged with the shaft sleeve 7, as shown in fig. 10 and 11, the annular sleeve is 7, a raised end plate 701 is installed on the annular sleeve 701, and a raised groove structure adapted to form a groove 901, thereby; the shaft sleeve 7 can also be replaced by an axial bearing with the same annular convex structure;
the shell 1, the main shaft 2, the gas groove plate 8 and the end cover 9 are coaxially arranged, a cavity 10 is formed among the shell 1, the main shaft 2, the gas groove plate 8 and the end cover 9, and the turbine 6 is located in the cavity 10; if the space of the cavity 10 is too small, a distance block 11 can be fixedly arranged between the shell 1 and the air trough plate 8, the space of the cavity 10 can be expanded by the distance block 11, the structure of the distance block 11 is added to the air motor of the embodiment, the cavity 10 is convenient for collecting generated hot air, and the hot air is discharged through the exhaust hole, so that the temperature rise of the air motor is small;
the shell 1 is provided with a plurality of first vent holes 101, the first radial bearing 3 is provided with a plurality of first throttle holes 301, the second radial bearing 4 is provided with a plurality of second throttle holes 401, and the annular sleeve 201 of the main shaft 2 is provided with air guide holes 202 for air flow to pass through in a circumferential array; the first vent hole 101 on the shell 1, the orifice on the radial bearing and the air guide hole 202 on the annular sleeve 201 of the main shaft 2 form an air flow channel, after the pressure air provided by an external air source passes through the first vent hole 101, the pressure air enters the gap between the main shaft 2 and the radial bearing through the orifices on the first radial bearing 3 and the second radial bearing 4, the air forms an air film in the gap, the air film with pressure supports the main shaft 2, and the air enters the atmospheric pressure from the end surface part of the sleeve 7 through the air guide hole 202, the whole process does not need lubricating oil, and the air is adopted for lubrication;
the end cover 9 is provided with a second vent hole 902, the second vent hole 902 is communicated with an air inlet channel 801 on the air trough plate 8, and the turbine 6 rotates by the airflow of the air inlet channel 801; a first air outlet 903 is formed in the end cover 9, the first air outlet 903 is communicated with an air outlet channel 802 on the air groove plate 8, and the second air outlet 902 can drive the turbine 6 to rotate after stable pressure gas enters, so that the main shaft 2 rotates;
the end cover 9 is also provided with a plurality of first exhaust holes 904, the first exhaust holes 904 correspond to and are communicated with the second exhaust holes 803 on the air groove plate 8 one by one, and the second exhaust holes 803 on the air groove plate 8 are communicated with the cavity 10, so that hot air can be conveniently exhausted; after stable pressure gas enters the second vent hole 902 on the end cover 9, the stable pressure gas enters the gas inlet channel 801 on the gas groove plate 8, the turbine 6 is rotated by the gas flow of the gas inlet channel 801, and the generated high-temperature gas is discharged through the second exhaust hole 803, the first exhaust hole 904 and the first exhaust hole 903, so that the temperature rise of the air motor is small, and the heat dissipation structure is good;
the working principle is as follows: firstly, after pressure gas provided by an external gas source passes through the first vent hole 101, the pressure gas enters gaps between the main shaft 2 and the radial bearing through the throttling holes on the first radial bearing 3 and the second radial bearing 4, the gas forms a gas film in the gaps, the gas film with pressure supports the main shaft 2, and the pressure gas enters atmospheric pressure from the end face part of the shaft sleeve 7 through the gas guide hole 202, and the gas is adopted for lubrication; then, after entering stable pressure gas, the second vent hole 902 on the end cover 9 enters the gas inlet channel 801 on the gas channel plate 8, the gas flow of the gas inlet channel 801 rotates the turbine 6, and the generated high-temperature gas is discharged through the second exhaust hole 803, the first exhaust hole 904 and the first exhaust hole 903, so that the temperature rise of the air motor is small, and the heat dissipation structure is good; therefore the utility model discloses air motor simple structure, gaseous lubricated and the drive spindle rotates, and its is clean, pollution-free, the temperature rise is little, heat radiation structure is good.
Claims (10)
1. An air motor characterized by: including casing and main shaft, the one end of main shaft passes the casing and stretches out outside the casing, installs first radial bearing and second radial bearing between main shaft and the casing, there is the cover plate that is used for first radial bearing closing cap through bolt fixed mounting in the casing, the fixed cover that is equipped with the turbine is sheathe in to the annular of main shaft, and the main shaft is kept away from the one end of second radial bearing and is installed the axle sleeve, the casing is close to the terminal surface and the gas frid fixed connection of cover plate, gas frid and end cover fixed connection, end cover and axle sleeve looks block.
2. An air motor according to claim 1, wherein: the shell, the main shaft, the air groove plate and the end cover are all coaxially arranged.
3. An air motor according to claim 1, wherein: a cavity is formed among the shell, the main shaft, the air groove plate and the end cover, and the turbine is located in the cavity.
4. An air motor in accordance with claim 1, wherein: and a distance block is fixedly arranged between the shell and the air groove plate.
5. An air motor in accordance with claim 1, wherein: and the first radial bearing and the second radial bearing are fixedly connected with the shell through pins.
6. An air motor in accordance with claim 1, wherein: the shell is provided with a plurality of first vent holes, the first radial bearing is provided with a plurality of first throttling holes, and the second radial bearing is provided with a plurality of second throttling holes.
7. An air motor in accordance with claim 3, wherein: the end cover is provided with a second vent hole which is communicated with an air inlet channel on the air trough plate, and the air flow of the air inlet channel enables the turbine to rotate; and the end cover is provided with a first air outlet hole which is communicated with an air outlet channel on the air trough plate.
8. An air motor in accordance with claim 7, wherein: the end cover is further provided with a plurality of first exhaust holes, the first exhaust holes correspond to and are communicated with second exhaust holes in the air groove plate one by one, and the second exhaust holes in the air groove plate are communicated with the cavity.
9. An air motor according to claim 1, wherein: the main shaft and the annular sleeve of the main shaft are of an integrally formed structure.
10. An air motor according to claim 1, wherein: and air guide holes for air flow to pass through are formed in the annular sleeve of the main shaft in a circumferential array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222505055.0U CN218177290U (en) | 2022-09-21 | 2022-09-21 | Air motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222505055.0U CN218177290U (en) | 2022-09-21 | 2022-09-21 | Air motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218177290U true CN218177290U (en) | 2022-12-30 |
Family
ID=84625450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222505055.0U Active CN218177290U (en) | 2022-09-21 | 2022-09-21 | Air motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218177290U (en) |
-
2022
- 2022-09-21 CN CN202222505055.0U patent/CN218177290U/en active Active
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