CN210919838U - Thin oil lubrication rolling bearing device for high-low speed variable frequency motor - Google Patents
Thin oil lubrication rolling bearing device for high-low speed variable frequency motor Download PDFInfo
- Publication number
- CN210919838U CN210919838U CN201921853691.4U CN201921853691U CN210919838U CN 210919838 U CN210919838 U CN 210919838U CN 201921853691 U CN201921853691 U CN 201921853691U CN 210919838 U CN210919838 U CN 210919838U
- Authority
- CN
- China
- Prior art keywords
- bearing
- oil
- rolling bearing
- low speed
- fixing ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a thin oil lubrication rolling bearing device for high and low speed variable frequency motor, the direction of keeping away from the motor along the axis of the motor shaft is called the external direction, including the bearing fixing base, be fixed with antifriction bearing in the bearing fixing base, antifriction bearing's outer lane is fixed in the bearing fixing base, antifriction bearing's inner circle is fixed in the motor shaft, is fixed with the bearing housing in the motor shaft, the bearing housing is located the antifriction bearing outside and leans on antifriction bearing's inner circle, installs bearing fixing ring, bearing enclosing cover on the lateral surface of bearing fixing base, and the inboard of bearing fixing ring leans on antifriction bearing's outer lane, and is equipped with the interval between bearing fixing ring and the bearing housing, and the bearing enclosing cover is located the bearing fixing ring outside and is provided with seal structure between the bearing housing, installs the bearing lid on; under the condition of not increasing related lubricating equipment, the self-circulation of internal lubricating oil is realized, and the bearings are ensured to be reliably and sufficiently lubricated during high-speed and low-speed running.
Description
Technical Field
The utility model belongs to the lubrication technology of motor bearing, concretely relates to thin oil lubrication rolling bearing device of high low speed variable frequency motor.
Background
Along with the progress of the frequency converter technology and the expansion of the application range, the application of the variable frequency motor is wider and wider, and along with the expansion of the frequency conversion range, the rotating speed difference between the low speed and the high speed of the variable frequency motor is larger and larger, so that the speed regulation range of the motor is wider, but higher requirements are provided for the type selection and the lubrication of a motor bearing.
When the high-low speed variable frequency motor works at high frequency, the linear speed of a rolling bearing is high, the generated heat is also large, a grease lubrication mode is adopted, poor lubrication is easily generated, the friction loss of the bearing cannot be dissipated, and then the bearing is caused to have a shaft holding fault. The traditional oil bath lubrication is adopted, so that the stirring effect of the lubricating oil in the oil bath is easily caused, excessive friction loss is easily generated, and the temperature of the bearing is high. The traditional oil ring is adopted for lubrication, so that lubricating oil is easily thrown away from the surface of the oil ring due to the high rotating speed of the oil ring, proper lubricating oil cannot be provided for the bearing, and the bearing runs in an oil shortage mode.
At present, the high-speed and low-speed variable frequency motor generally adopts modes such as external circulation oil lubrication, oil-gas lubrication, oil mist lubrication and the like, and related lubricating devices are additionally required in the lubricating modes, so that the purchasing cost is high, the occupied space of the devices is large, the system control is complex and the like, and the popularization and the application of the high-speed and low-speed variable frequency motor are influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a thin oil lubrication rolling bearing device of a high-low speed variable frequency motor; the technical scheme adopted for achieving the purpose is as follows:
a thin oil lubrication rolling bearing device for a high-low speed frequency conversion motor is characterized in that the direction of the axis of a motor rotating shaft away from the motor is called the outer direction, the thin oil lubrication rolling bearing device comprises a bearing fixing seat, a rolling bearing is fixed in the bearing fixing seat, an outer ring of the rolling bearing is fixed in the bearing fixing seat, an inner ring of the rolling bearing is fixed on the motor rotating shaft, a bearing sleeve is fixed on the motor rotating shaft, the bearing sleeve is positioned on the outer side of the rolling bearing and abuts against the inner ring of the rolling bearing, a bearing fixing ring and a bearing outer cover are mounted on the outer side surface of the bearing fixing seat, the inner side of the bearing fixing ring abuts against the outer ring of the rolling bearing, a gap is formed between the bearing fixing ring and the bearing sleeve, the bearing outer cover is positioned;
the bearing fixing ring is characterized in that the space in the inner side part of the bearing fixing ring is a bearing lubricating chamber, the space between the bearing outer cover and the bearing fixing ring is a lubricating oil storage chamber, an oil slinger is sleeved on the bearing sleeve, the bottom of the oil slinger is immersed in lubricating oil of the lubricating oil storage chamber, a guide groove arranged in the inner and outer directions is arranged on the inner wall of the bearing outer cover, the guide groove extends into the bearing lubricating chamber from the lubricating oil storage chamber, and the guide groove is gradually inclined downwards from the lubricating oil storage chamber to the bearing lubricating chamber.
Preferably, the bearing sleeve is sequentially provided with a rotary sealing section, a vertical table stage and a conical table stage from outside to inside, wherein a sealing structure is arranged between the rotary sealing section and the bearing outer cover, the oil slinger is suspended on the vertical table stage, the diameter of the vertical step section is smaller than that of the rotary sealing section, and the diameter of the conical table stage is sequentially increased from outside to inside.
Preferably, the maximum diameter of the conical table stage is not more than the inner diameter of the outer ring of the rolling bearing and not less than the outer diameter of the inner ring of the rolling bearing.
Preferably, a horizontal oil pipe is arranged on the lubricating oil storage chamber, the tail end of the horizontal oil pipe is connected with an oil level chamber, and an oil filling port is arranged on the oil level chamber.
Preferably, an oil storage groove is formed in the inner side wall of the oil slinger.
Preferably, the inner bottom of the bearing fixing ring is not higher than 1/2 of the diameter of the lowest ball of the rolling bearing.
Preferably, the guide groove is located at an upper middle position of the inner wall of the bearing outer cover.
Preferably, a locking nut for compressing the bearing sleeve is installed on the motor rotating shaft, and the locking nut is located in the bearing cover.
Preferably, a vertical through hole is formed at the bottom of the bearing cover.
The utility model discloses the beneficial effect who has does: the utility model discloses can realize the self-loopa of inside lubricating oil under the condition that does not increase relevant lubricated equipment, ensure that the bearing all obtains reliable, sufficient lubrication when high-low speed operation, reduce the friction loss when high-speed operation simultaneously, reduce bearing operating temperature, improve the operational reliability of bearing.
Drawings
FIG. 1 is a longitudinal cross-sectional view of a front view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2;
fig. 4 is a left side view of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 4, for convenience of description, the direction away from the motor along the axis of the motor shaft is referred to as an outer direction, the present invention includes a bearing fixing seat 8, a rolling bearing 7 is fixed in the bearing fixing seat 8, an outer ring 16 of the rolling bearing 7 is fixed in the bearing fixing seat 8, an inner ring 15 of the rolling bearing 7 is fixed on the motor shaft 9, a bearing sleeve 11 is fixed on the motor shaft 9, the bearing sleeve 11 is located outside the rolling bearing 7 and abuts against the inner ring 15 of the rolling bearing 7, a bearing fixing ring 6 and a bearing outer cover 5 are installed on the outer side surface of the bearing fixing seat 8, the inner side of the bearing fixing ring 6 abuts against the outer ring 16 of the rolling bearing 7, a gap is provided between the bearing fixing ring 6 and the bearing sleeve 11, the bearing outer cover 5 is located outside the bearing fixing ring 6 and is connected with the bearing, a bearing cover 4 is arranged on the outer side surface of the bearing outer cover 5;
bearing enclosing cover 5 is located the solid fixed ring 6 outsides of bearing and is connected with bearing housing 11 between sealed rotation, installs bearing cap 4 on 5 lateral surfaces of bearing enclosing cover and changes: the bearing outer cover 5 is positioned on the outer side of the bearing fixing ring 6, a sealing structure is arranged between the bearing outer cover and the bearing sleeve 11, and the bearing cover 4 is arranged on the outer side surface of the bearing outer cover 5;
the bearing fixing ring 6 is provided with a bearing lubricating chamber in the inner part, the bearing outer cover 5 is provided with a lubricating oil storage chamber in the space between the bearing fixing ring 6, the bearing sleeve 11 is sleeved with an oil slinger 10, the bottom of the oil slinger 10 is immersed in the lubricating oil 1 in the lubricating oil storage chamber, the inner wall of the bearing outer cover 5 is provided with a guide groove 18 arranged along the inner and outer directions, the guide groove 18 extends into the bearing lubricating chamber from the lubricating oil storage chamber, the guide groove 18 is gradually inclined downwards from the lubricating oil storage chamber to the bearing lubricating chamber, so that when the motor rotating shaft 9 rotates at a high speed, the oil slinger 10 brings up the lubricating oil 1 and throws the lubricating oil to the inner surface of the bearing outer cover 5, and the lubricating oil 1 on the upper half part of the inner surface of the bearing outer cover 5 flows into the bearing.
The bearing sleeve 11 is a rotary sealing section 12, a vertical stage 13 and a conical stage 14 from outside to inside in sequence, wherein the rotary sealing section 12 is connected with the bearing outer cover 5 in a rotary sealing mode, the oil slinger 10 is hung on the vertical stage 13, the diameter of the vertical stage 13 is smaller than that of the rotary sealing section 12, and the diameter of the conical stage 14 is increased from outside to inside in sequence.
Bearing housing 11 is rotary seal section 12, vertical platform stage 13 and toper platform stage 14 from outside to inside in proper order, and wherein, rotary seal connects between rotary seal section 12 and the bearing enclosing cover 5, and oil slinger 10 hangs on vertical platform stage 13 and vertical platform stage 13 diameter is less than rotary seal section 12 diameter, and the diameter of toper platform stage 14 increases from outside to inside in proper order and changes into: the bearing sleeve 11 is a rotary sealing section 12, a vertical stage 13 and a conical stage 14 from outside to inside in sequence, wherein a sealing structure is arranged between the rotary sealing section 12 and the bearing outer cover 5 in a rotary sealing connection mode, the oil slinger 10 is hung on the vertical stage 13, the diameter of the vertical stage 13 is smaller than that of the rotary sealing section 12, and the diameter of the conical stage 14 is increased from outside to inside in sequence
In the process of low rotating speed of the bearing sleeve 11, the linear speed of the surface of the conical table stage 14 is sequentially increased from outside to inside, so that the oil slinger 10 brings the lubricating oil 1 onto the bearing sleeve 11 and then flows into a bearing lubricating chamber under the combined action of the required centripetal force and oil surface tension along axial climbing so as to lubricate the rolling bearing 7; for better lubrication, the maximum diameter of the truncated cone section 14 can be further limited, i.e. not greater than the inner diameter of the outer bearing ring 16 and not less than the outer diameter of the inner bearing ring 15.
In order to observe and fill the oil level of the lubricating oil 1 in the lubricating oil storage chamber, a horizontal oil pipe 23 is arranged on the lubricating oil storage chamber, an oil scale chamber 22 is connected to the tail end of the horizontal oil pipe 23, and an oil filling opening 21 is arranged on the oil scale chamber 22, wherein the oil scale chamber 22 is communicated with the lubricating oil storage chamber through the horizontal oil pipe 23 to form a communicating vessel, so that the liquid level of the lubricating oil 1 in the lubricating oil storage chamber can be observed on the oil scale chamber 22.
An oil storage groove is formed in the inner side wall of the oil slinger 10, so that the carrying amount of the lubricating oil 1 is increased, and the lubricating effect is improved; on the other hand, the bottom 17 in the bearing fixing ring 6 is not higher than 1/2 of the diameter of the rolling ball of the rolling bearing 7, so that the liquid level of the lubricating oil 1 in the bearing lubricating chamber is not higher than 1/2 of the diameter of the lowest rolling ball of the rolling bearing 7, the stirring effect on the lubricating oil is reduced, the friction loss is reduced, and when the lubricating oil 1 in the bearing lubricating chamber is excessive, the lubricating oil flows back to the lubricating oil storage chamber from the position of the bottom 17 in the bearing fixing ring 6.
Install lock nut 3 that is used for compressing tightly bearing housing 11 at motor shaft 9 front end, lock nut 3 is located bearing cap 4, is equipped with vertical through-hole 2 in bearing cap 4 bottom to the foreign matter such as the outside rainwater that gets into of being convenient for is discharged.
In the working process, when the motor rotating shaft 9 rotates at a low speed, the oil slinger 10 brings the lubricating oil 1 onto the bearing sleeve 11 and then flows into the bearing lubricating chamber under the combined action of the required centripetal force and the oil surface tension along the axial climbing, so as to lubricate the rolling bearing 7; when the motor rotating shaft 9 rotates at a high speed, the oil slinger 10 carries the lubricating oil 1 and slings the lubricating oil to the inner surface of the bearing outer cover 5, the lubricating oil 1 in the upper half part of the inner surface of the bearing outer cover 5 flows into the bearing lubricating chamber along the inner wall surface to lubricate the rolling bearing 7, and meanwhile, part of the lubricating oil 1 still flows into the bearing lubricating chamber along the bearing sleeve 11.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments, but such modifications or substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. A thin oil lubrication rolling bearing device for a high-low speed frequency conversion motor is characterized by comprising a bearing fixing seat, wherein a rolling bearing is fixed in the bearing fixing seat, an outer ring of the rolling bearing is fixed in the bearing fixing seat, an inner ring of the rolling bearing is fixed on a motor rotating shaft, a bearing sleeve is fixed on the motor rotating shaft, the bearing sleeve is positioned outside the rolling bearing and abuts against the inner ring of the rolling bearing, a bearing fixing ring and a bearing outer cover are mounted on the outer side surface of the bearing fixing seat, the inner side of the bearing fixing ring abuts against the outer ring of the rolling bearing, a gap is formed between the bearing fixing ring and the bearing sleeve, the bearing outer cover is positioned outside the bearing fixing ring and is provided with a sealing structure with the bearing sleeve, and a bearing cover is mounted on the outer side surface of the bearing outer cover;
the bearing fixing ring is characterized in that the space in the inner side part of the bearing fixing ring is a bearing lubricating chamber, the space between the bearing outer cover and the bearing fixing ring is a lubricating oil storage chamber, an oil slinger is sleeved on the bearing sleeve, the bottom of the oil slinger is immersed in lubricating oil of the lubricating oil storage chamber, a guide groove arranged in the inner and outer directions is arranged on the inner wall of the bearing outer cover, the guide groove extends into the bearing lubricating chamber from the lubricating oil storage chamber, and the guide groove is gradually inclined downwards from the lubricating oil storage chamber to the bearing lubricating chamber.
2. A thin oil lubrication rolling bearing device for a high and low speed frequency conversion motor according to claim 1, wherein the bearing housing is a rotary seal section, a vertical stage section and a conical stage section in this order from outside to inside, wherein a seal structure is provided between the rotary seal section and the bearing outer cover, the oil slinger is suspended on the vertical stage section and the diameter of the vertical stage section is smaller than that of the rotary seal section, and the diameter of the conical stage section increases in this order from outside to inside.
3. The thin oil lubrication rolling bearing device for a high and low speed frequency conversion motor according to claim 2, wherein a maximum diameter of the tapered land stage is not more than an inner diameter of an outer ring of the rolling bearing and not less than an outer diameter of an inner ring of the rolling bearing.
4. The thin oil lubrication rolling bearing device for a high-low speed frequency conversion motor according to claim 1, wherein a horizontal oil pipe is provided in the lubricating oil reservoir, a target oil chamber is connected to an end of the horizontal oil pipe, and an oil filler is provided in the target oil chamber.
5. A thin oil lubrication rolling bearing device for a high and low speed frequency conversion motor according to any one of claims 1 to 4, wherein an oil storage groove is provided on an inner side wall of an oil slinger.
6. The thin oil lubrication rolling bearing device for high and low speed frequency conversion motor according to any one of claims 1 to 4, wherein the bottom portion in the bearing fixing ring is not higher than 1/2 of the diameter of the lowermost ball of the rolling bearing.
7. A thin oil-lubricated rolling bearing device for a high-low speed frequency conversion motor according to any one of claims 1 to 4, wherein the guide groove is located at an upper middle position of the inner wall of the bearing outer cover.
8. A thin oil lubrication rolling bearing device for high and low speed frequency conversion motor according to any one of claims 1 to 4, wherein a lock nut for pressing a bearing sleeve is mounted on a motor rotating shaft, and the lock nut is located in a bearing cover.
9. A thin oil lubricated rolling bearing device for high and low speed frequency conversion motor according to claim 8, wherein a vertical through hole is provided at the bottom of the bearing cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921853691.4U CN210919838U (en) | 2019-10-31 | 2019-10-31 | Thin oil lubrication rolling bearing device for high-low speed variable frequency motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921853691.4U CN210919838U (en) | 2019-10-31 | 2019-10-31 | Thin oil lubrication rolling bearing device for high-low speed variable frequency motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210919838U true CN210919838U (en) | 2020-07-03 |
Family
ID=71348095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921853691.4U Active CN210919838U (en) | 2019-10-31 | 2019-10-31 | Thin oil lubrication rolling bearing device for high-low speed variable frequency motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210919838U (en) |
-
2019
- 2019-10-31 CN CN201921853691.4U patent/CN210919838U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201250898Y (en) | Gear box bearing oil scraping lubrication structure | |
| CN107269571B (en) | Self-circulation system for lubricating oil of bearing box for pump | |
| CN106451893A (en) | Novel bearing chamber structure of motor | |
| CN210919838U (en) | Thin oil lubrication rolling bearing device for high-low speed variable frequency motor | |
| US4597679A (en) | Apparatus for lubricating a bearing assembly | |
| CN103062224B (en) | A kind of leakproof fat wind-powered turntable bearing | |
| CN207879864U (en) | A kind of numerically-controlled machine tool gear-box main motor shaft bearing lubrication structure | |
| CN103016697B (en) | A kind of differential lubricating device of improvement | |
| CN212100642U (en) | Lubricating oil internal circulation vibration exciter | |
| CN110671430A (en) | Thin oil lubrication rolling bearing device | |
| CN202646128U (en) | Circular lubricating and heat-radiating bearing oil tank for pump | |
| JPH04279711A (en) | Method and device for slinger lubrication | |
| CN109611373A (en) | A kind of vertical pump thin oil self-lubricating bearing body | |
| CN204627686U (en) | generator lubrication system | |
| CN106958734B (en) | The two-way mutual lubricating system of rocker arm of coal mining machine and rocker arm of coal mining machine | |
| CN207278842U (en) | Lightweight gear housing with lubricating oil auto oil-collecting distribution function | |
| CN203430832U (en) | Thin oil self-lubricating type transmission shaft device of vertical axial pump | |
| CN206290713U (en) | A kind of leading-type oil mist sealing device for bidirectional rotation engine | |
| CN203348318U (en) | Bearing component for vertical pump | |
| CN211398303U (en) | Bearing lubricating structure | |
| CN211343463U (en) | Bearing box device of cantilever type fan bearing forced air cooling | |
| CN102734204A (en) | Circulating lubricating cooling bearing oil tank for pumps | |
| CN208900688U (en) | Vertical spiral umbrella gear box lubrication system | |
| CN208268234U (en) | A kind of oil collector sump tank | |
| CN207333187U (en) | A kind of vertical dry pump apical axis holds self lubricating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |