CN204064190U - A kind of device measuring matched bearings end-play - Google Patents
A kind of device measuring matched bearings end-play Download PDFInfo
- Publication number
- CN204064190U CN204064190U CN201420490521.5U CN201420490521U CN204064190U CN 204064190 U CN204064190 U CN 204064190U CN 201420490521 U CN201420490521 U CN 201420490521U CN 204064190 U CN204064190 U CN 204064190U
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- bearing
- matched bearings
- rotating shaft
- play
- magnetic bearing
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Abstract
The utility model is the device measuring matched bearings end-play, comprise base, be installed on the rotating shaft in base, be installed on the lifting force magnetic bearing of rotating shaft, lower thrust magnetic bearing and the thrust bearing bracing ring that lifting force magnetic bearing and lower thrust magnetic bearing are separated, the upper end of rotating shaft extends beyond outside the upper surface of base, at the upper end of rotating shaft, matched bearings is installed, above lifting force magnetic bearing, bearing bridge is installed, bearing bridge is provided with the bearing a set of cups be installed on by matched bearings wherein, the outward flange of bearing bridge is close to the top of the sidewall of base, double threaded screw and screw rod is separately installed with in the both sides of bearing bridge, the upper surface of rotating shaft is provided with shaft end ring, be locked shaft end ring the axle head screw in rotating shaft upper surface and be sheathed on the bearing gland of shaft end ring periphery, gauge stand is mounted with between double threaded screw and screw rod, gauge stand is mounted with dial gauge, the gauge outfit of dial gauge is placed on axle head screw upper surface before measuring.
Description
Technical field:
The utility model relates to a kind of device measuring matched bearings end-play, and it belongs to Bearing testing field of measuring technique.
Background technology:
Bearing clearance, namely spindle holds when not being installed on axle or bearing housing, a side of its inner ring or outer ring is fixed, amount of movement when then making a loose side do radial direction or move axially.According to moving direction, end-play and end-play can be divided into.The performance such as rolling fatigue life, temperature rise, noise, vibration of size on bearing of the play (being called working gap) during running has impact.
In the actual production process of magnetic suspension air blower, matched bearings obtains a large amount of application in plant equipment.These bearings play key player in the stable operation process of producing reality, also have very large effect to the control of equipment failure.Magnetic levitation apparatus belongs to high-speed equipment, and the maximum speed of its rotor can more than 40000rpm, if bearing breaks down and can cause very serious industrial accident in such cases.Meanwhile, produce because do not understand the concrete numerical value of bearing axial play when assembling, assembling progress is greatly affected.
Therefore, necessary the deficiency solving prior art is improved to prior art.
Utility model content:
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of device measuring matched bearings end-play, it can realize the Survey control to matched bearings bearing clearance, and then confirm whether institute's survey bearing meets technical requirement, avoids the production development accident because using defective bearing.
The utility model adopts following technical scheme: a kind of device measuring matched bearings end-play, it is characterized in that: comprise base, be installed on the rotating shaft of the center in base, be installed in base and be sheathed on the lifting force magnetic bearing of rotating shaft periphery and lower thrust magnetic bearing, be sheathed on rotating shaft periphery and the thrust bearing bracing ring that lifting force magnetic bearing and lower thrust magnetic bearing are separated, the upper end of described rotating shaft extends beyond outside the upper surface of base, at the upper end of described rotating shaft, matched bearings is installed, above described lifting force magnetic bearing, the bearing bridge that is sheathed on rotating shaft periphery is installed, described bearing bridge is provided with one and matched bearings is installed on bearing a set of cups wherein, the outward flange of described bearing bridge is close to the top of the sidewall of base, double threaded screw and screw rod is separately installed with in the both sides of described bearing bridge, position corresponding with double threaded screw and screw rod on described base is formed with screw, the upper surface of described rotating shaft is provided with shaft end ring, shaft end ring is locked the axle head screw in rotating shaft upper surface and be sheathed on shaft end ring periphery and the bearing gland be positioned at above matched bearings, gauge stand is mounted with between described double threaded screw and screw rod, described gauge stand is mounted with dial gauge, the gauge outfit of described dial gauge is placed on axle head screw upper surface before measuring.
Further, the position described bearing bridge is positioned at outside bearing holder (housing, cover) cup is formed with the preformed hole that runs through bearing bridge upper and lower surface, is equipped with two current line in described preformed hole, and one is the first current line, and another root is the second current line.
Further, vertically corresponding mutually with the preformed hole on bearing bridge on described lifting force magnetic bearing and thrust bearing bracing ring position is formed with a through hole respectively.
Further, one end of described first current line is connected on lifting force magnetic bearing, the other end is connected to external power supply, one end of described second current line is connected on lower thrust magnetic bearing through after preformed hole, the through hole on lifting force magnetic bearing and the through hole on thrust bearing bracing ring on bearing bridge successively, and the other end is connected to external power supply.
Further, the external arc diameter of described shaft end ring is greater than the inner ring internal diameter of matched bearings, and is less than the inner ring external diameter of matched bearings.
Further, described bearing gland is positioned at the top of bearing a set of cups, and described bearing gland is the plate body shape being provided with center hole, and the diameter of described bearing gland center hole is greater than the inner ring external diameter of matched bearings, and is less than the outer ring internal diameter of matched bearings.
Further, on described double threaded screw, the position be positioned at above gauge stand is provided with nut.
Further, the device of described measurement matched bearings end-play also includes and base, lifting force magnetic bearing, lower thrust magnetic bearing and thrust bearing bracing ring is located the register pin be fixed on together.
The utility model has following beneficial effect: by the use of matched bearings end-play pick-up unit, ensure that all bearings be installed on equipment are all qualified, the requirement of equipment can be met, thus reduce the failure rate of bearing, improve the stability that equipment runs, ensure the stable operation of producing.
Accompanying drawing illustrates:
Fig. 1 is the structural representation that the utility model measures the device of matched bearings end-play.
Fig. 2 is the structural representation of Fig. 1 shaft, axle head screw and shaft end ring.
Fig. 3 is when after the energising of lower thrust magnetic bearing, rotating shaft is stressed, the partial enlarged drawing at matched bearings place.
Fig. 4 is when after the energising of lifting force magnetic bearing, rotating shaft is stressed, the partial enlarged drawing at matched bearings place.
Wherein:
1-base; 2-rotating shaft; 3-lifting force magnetic bearing; Thrust magnetic bearing under 4-; 5-thrust bearing bracing ring; 6-register pin; 7-matched bearings; 8-bearing bridge; 9-second screw; 10-bearing a set of cups; 11-first screw; 12-shaft end ring; 13-axle head screw; 14-bearing gland; 15-double threaded screw; 16-screw rod; 17-gauge stand; 18-the 3rd screw; 19-dial gauge; 20-nut.
Embodiment:
Please refer to shown in Fig. 1 and Fig. 2, the device that the utility model measures matched bearings end-play comprises base 1, be installed on the rotating shaft 2 of the center in base 1, be installed in base 1 and be sheathed on the lifting force magnetic bearing 3 of rotating shaft 2 periphery and lower thrust magnetic bearing 4, be sheathed on rotating shaft 2 periphery and the thrust bearing bracing ring 5 that lifting force magnetic bearing 3 and lower thrust magnetic bearing 4 are separated, wherein base 1, lifting force magnetic bearing 3, lower thrust magnetic bearing 4 and thrust bearing bracing ring 5 are fixed on together by register pin 6 location.The upper end of the utility model shaft 2 extends beyond outside the upper surface of base 1, is provided with matched bearings 7 at the upper end of rotating shaft 2.Its shaft 2 is step-like, and position rotating shaft 2 is positioned at below matched bearings 7 is formed with a step surface (sign).
The bearing bridge 8 that one is sheathed on rotating shaft 1 periphery is installed in the utility model above lifting force magnetic bearing 3, bearing bridge 8 is pressed in lifting force magnetic bearing 3, bearing bridge 8 is provided with one and matched bearings 7 is installed on bearing a set of cups 10 wherein, together with wherein bearing bridge 8 and bearing a set of cups 10 are connected and installed in by the first screw 11.Position bearing bridge 8 is positioned at outside bearing holder (housing, cover) cup 10 is formed with the preformed hole (not shown) that runs through bearing bridge 8 upper and lower surface, two current line are equipped with in this preformed hole, one is the first current line, another root is the second current line, wherein one end of the first current line is connected on lifting force magnetic bearing 3, and the other end is connected to external power supply.Simultaneously vertically corresponding mutually with the preformed hole on bearing bridge 8 on lifting force magnetic bearing 3 and thrust bearing bracing ring 5 position is also formed with through hole (not shown) respectively, wherein one end of the second current line is connected on lower thrust magnetic bearing 4 through after preformed hole, the through hole on lifting force magnetic bearing 3 and the through hole on thrust bearing bracing ring 5 on bearing bridge 8 successively, and the other end is connected to external power supply.The outward flange of bearing bridge 8 is close to the top of the sidewall of base 1, is separately installed with double threaded screw 15 and screw rod 16 in the both sides of bearing bridge 8, and wherein corresponding with double threaded screw 15 and screw rod 16 on base 1 position is formed with screw (not shown).The upper surface of rotating shaft 1 is provided with shaft end ring 12, shaft end ring 12 is locked the axle head screw 13 in rotating shaft 1 upper surface and be sheathed on shaft end ring 12 periphery and the bearing gland 14 be positioned at above matched bearings 7, wherein the external arc diameter of shaft end ring 12 is greater than the inner ring internal diameter of matched bearings 7 and then blocks outside upper surface that matched bearings 7 do not protrude from rotating shaft 1 when measuring, and is slightly less than the inner ring external diameter of matched bearings 7 and then does not affect the rotation of matched bearings 7.Wherein bearing gland 14 top that is positioned at bearing a set of cups 10 by the second screw 9 compress matched bearings 7 outer ring and together with being installed on bearing a set of cups 10, bearing gland 14 is for being provided with the plate body shape of center hole, the diameter of bearing gland 14 center hole is greater than the inner ring external diameter of matched bearings 7 and then does not affect the rotation of matched bearings 7 inner ring, and is less than the outer ring internal diameter of matched bearings 7 and then ensures that bearing gland 14 compresses the outer ring of matched bearings 7.
Between double threaded screw 15 and screw rod 16, be mounted with gauge stand 17 in the utility model, gauge stand 17 is mounted with precision measuring instrument such as dial gauge 19 grade by the 3rd screw 18.Position double threaded screw 15 is positioned at above gauge stand 17 is provided with nut 20, by nut 20, double threaded screw 15 is screwed in the screw on base 1, and by screw rod 16 is screwed in the screw on base 1, and then before measuring the gauge outfit of dial gauge 19 is placed on the upper surface of axle head screw 7.
Please refer to Fig. 1 to Fig. 2, and shown in composition graphs 3 to Fig. 4, the utility model measures the measurement device method of matched bearings end-play, comprises the steps:
(1) before, matched bearings 7 being installed, measurement matched bearings 7 is superimposed on thickness together, be designated as L (unit: mm), the length dimension measuring the position for installing matched bearings 7 of rotating shaft 2 upper end is D (unit: mm), wherein D=L+0.3 ~ 0.5 (unit: mm);
(2), be energized to lower thrust magnetic bearing 4 by the second current line, lower thrust magnetic bearing 4 produces electromagnetic force, make rotating shaft 2 to lower stress, now the inner ring of matched bearings 7 is compressed by the lower surface of shaft end ring 12, keep energising, the gauge outfit of dial gauge 19 is compressed the upper surface of axle head screw 13, and the pointer of dial gauge 19 is returned to zero;
(3), to the power-off of lower thrust magnetic bearing 4, be energized to again lifting force magnetic bearing 3 by the first current line, lifting force magnetic bearing 3 produces electromagnetic force, make rotating shaft 2 upwards stressed, now the inner ring of matched bearings 7 is compressed by the step surface be positioned at below matched bearings 7 in rotating shaft 2, keep energising, record dial gauge 19 reading now, is designated as A (unit: mm);
(4), calculate the end-play of matched bearings 7, provide as follows:
The end-play of matched bearings=| A|-(L-D) (unit: mm);
(5), power-off, and dismantle matched bearings (7).
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art, can also make some improvement under the prerequisite not departing from the utility model principle, these improvement also should be considered as protection domain of the present utility model.
Claims (8)
1. measure the device of matched bearings end-play for one kind, it is characterized in that: comprise base (1), be installed on the rotating shaft (2) of the center in base (1), be installed in base (1) and be sheathed on the peripheral lifting force magnetic bearing (3) of rotating shaft (2) and lower thrust magnetic bearing (4), be sheathed on rotating shaft (2) peripheral and the thrust bearing bracing ring (5) that lifting force magnetic bearing (3) and lower thrust magnetic bearing (4) are separated, the upper end of described rotating shaft (2) extends beyond outside the upper surface of base (1), at the upper end of described rotating shaft (2), matched bearings (7) is installed, be provided with one in the top of described lifting force magnetic bearing (3) and be sheathed on the peripheral bearing bridge (8) of rotating shaft (1), described bearing bridge (8) is provided with one and matched bearings (7) is installed on bearing a set of cups (10) wherein, the outward flange of described bearing bridge (8) is close to the top of the sidewall of base (1), double threaded screw (15) and screw rod (16) is separately installed with in the both sides of described bearing bridge (8), the upper position corresponding with double threaded screw (15) and screw rod (16) of described base (1) is formed with screw, the upper surface of described rotating shaft (1) is provided with shaft end ring (12), shaft end ring (12) is locked the axle head screw (13) in rotating shaft (1) upper surface and be sheathed on shaft end ring (12) peripheral and be positioned at the bearing gland (14) of matched bearings (7) top, gauge stand (17) is mounted with between described double threaded screw (15) and screw rod (16), described gauge stand (17) is mounted with dial gauge (19), the gauge outfit of described dial gauge (19) is placed on axle head screw (13) upper surface before measuring.
2. the device measuring matched bearings end-play as claimed in claim 1, it is characterized in that: the position being positioned at bearing holder (housing, cover) cup (10) outside on described bearing bridge (8) is formed with the preformed hole that runs through bearing bridge (8) upper and lower surface, two current line are equipped with in described preformed hole, one is the first current line, and another root is the second current line.
3. the device measuring matched bearings end-play as claimed in claim 2, is characterized in that: be formed with a through hole respectively described lifting force magnetic bearing (3) and the upper position vertically corresponding mutually with the preformed hole on bearing bridge (8) of thrust bearing bracing ring (5).
4. the device measuring matched bearings end-play as claimed in claim 3, it is characterized in that: one end of described first current line is connected on lifting force magnetic bearing (3), the other end is connected to external power supply, one end of described second current line is connected on lower thrust magnetic bearing (4) through after preformed hole, the through hole on lifting force magnetic bearing (3) and the through hole on thrust bearing bracing ring (5) on bearing bridge (8) successively, and the other end is connected to external power supply.
5. the device measuring matched bearings end-play as claimed in claim 4, it is characterized in that: the external arc diameter of described shaft end ring (12) is greater than the inner ring internal diameter of matched bearings (7), and is less than the inner ring external diameter of matched bearings (7).
6. the device measuring matched bearings end-play as claimed in claim 5, it is characterized in that: described bearing gland (14) is positioned at the top of bearing a set of cups (10), described bearing gland (14) is for being provided with the plate body shape of center hole, the diameter of described bearing gland (14) center hole is greater than the inner ring external diameter of matched bearings (7), and is less than the outer ring internal diameter of matched bearings (7).
7. the device measuring matched bearings end-play as claimed in claim 6, is characterized in that: the position being positioned at gauge stand (17) top on described double threaded screw (15) is provided with nut (20).
8. as the device of the measurement matched bearings end-play in claim 1-7 as described in any one, it is characterized in that: the device of described measurement matched bearings end-play also includes locates base (1), lifting force magnetic bearing (3), lower thrust magnetic bearing (4) and thrust bearing bracing ring (5) for the register pin (6) be fixed on together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420490521.5U CN204064190U (en) | 2014-08-27 | 2014-08-27 | A kind of device measuring matched bearings end-play |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420490521.5U CN204064190U (en) | 2014-08-27 | 2014-08-27 | A kind of device measuring matched bearings end-play |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204064190U true CN204064190U (en) | 2014-12-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420490521.5U Withdrawn - After Issue CN204064190U (en) | 2014-08-27 | 2014-08-27 | A kind of device measuring matched bearings end-play |
Country Status (1)
| Country | Link |
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| CN (1) | CN204064190U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423864A (en) * | 2015-10-27 | 2016-03-23 | 太原重工股份有限公司 | Bearing axial clearance measuring device |
| CN104154845B (en) * | 2014-08-27 | 2016-09-14 | 南京磁谷科技有限公司 | A kind of device measuring matched bearings end-play and measuring method |
| CN108799465A (en) * | 2018-08-31 | 2018-11-13 | 沃德传动（天津）股份有限公司 | A kind of high-power scratch board conveyor speed reducer input shaft structure |
| WO2021258433A1 (en) * | 2020-06-24 | 2021-12-30 | 南京磁谷科技股份有限公司 | Axial clearance measuring gage for angular contact ball bearing |
-
2014
- 2014-08-27 CN CN201420490521.5U patent/CN204064190U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154845B (en) * | 2014-08-27 | 2016-09-14 | 南京磁谷科技有限公司 | A kind of device measuring matched bearings end-play and measuring method |
| CN105423864A (en) * | 2015-10-27 | 2016-03-23 | 太原重工股份有限公司 | Bearing axial clearance measuring device |
| CN105423864B (en) * | 2015-10-27 | 2018-02-02 | 太原重工股份有限公司 | Bearing axial play measurement apparatus |
| CN108799465A (en) * | 2018-08-31 | 2018-11-13 | 沃德传动（天津）股份有限公司 | A kind of high-power scratch board conveyor speed reducer input shaft structure |
| WO2021258433A1 (en) * | 2020-06-24 | 2021-12-30 | 南京磁谷科技股份有限公司 | Axial clearance measuring gage for angular contact ball bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141231 Effective date of abandoning: 20160914 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |