CN201956788U - Installation structure of front bearing of motor in rubular type axial flow pump - Google Patents
Installation structure of front bearing of motor in rubular type axial flow pump Download PDFInfo
- Publication number
- CN201956788U CN201956788U CN2011200382559U CN201120038255U CN201956788U CN 201956788 U CN201956788 U CN 201956788U CN 2011200382559 U CN2011200382559 U CN 2011200382559U CN 201120038255 U CN201120038255 U CN 201120038255U CN 201956788 U CN201956788 U CN 201956788U
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- bearing
- rotating shaft
- sleeve
- flow pump
- mounting structure
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Abstract
The utility model discloses an installation structure of a front bearing of a motor in a rubular type axial flow pump, comprising a rotary shaft, a bearing block, a bearing cover, a bearing, two sealing rings, an adapter sleeve, a locknut and a locking buckle; the outer surface of the front large part of the adapter sleeve is a circular conical surface which is big in front part and small in rear part, the outer surface of the rear small part of the adapter sleeve is a cylindrical surface and is provided with a screw thread, the adapter sleeve is sleeved on the rotary shaft and positioned between the inner chamber surface of the bearing and the rotary shaft; when the clearance between a roller in the bearing and the outer ring roller path of the bearing is in the range of 0.11-0.195 mm, the locknut is screwed on the rear small part of the adapter sleeve for fixing the adapter sleeve on the rotary shaft; the locking buckle is clamped at the rear end of the locknut by; the two ends of the bearing block are respectively provided with a lower half bearing box end casing, the two ends of the bearing cover are respectively provided with an upper half bearing box end casing, the sealing rings are arranged in the inner chamber which is enclosed by the inner end surfaces of the upper half bearing box end casings and the inner end surfaces of the lower half bearing box end casings, and the outer peripheral surfaces of the sealing rings are provided with a plurality of maze slots.
Description
Technical field
The utility model relates to the mounting structure of the preceding end bearing of a kind of tubular through flow pump motor.
Background technology
The tubular through flow pump motor is used for project of South-to-North water diversion, and its power is 1650kW, and number of poles is 52 utmost points, is used for rear-mounted bulb through-flow pump assembly, not only can reduce the cost of pump group but also can improve the efficient of water pump.The tubular through flow pump motor is installed in the downstream of water pump, and motor and water pump are structurally formed a unit, the shared horizontal spindle of pump turbine and motor.Guarantee that a critical speed of system is not less than 1.2 times of the maximum runaway speed of unit, and do not produce harmful vibration and swing comprising operation under any rotating speed of maximum runaway speed.The tubular through flow pump motor is a horizontal type structure, and shaft extension end (front end) is a seat formula rolling bearing, and non-shaft stretching end (rear end) is the end cover type rolling bearing.
The mounting structure of bearing is to counting for much in bearing temperature rise, noise, the useful life of motor operation, and the trajectory adjustable gaps of bearing guarantees that bearing operates in optimum state.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiencies in the prior art, and the mounting structure of end bearing before a kind of tubular through flow pump motor is provided, and its structure is provided with rationally, and it is smooth that motor is installed, and can guarantee the motor operational excellence.
The technical scheme that realizes above-mentioned purpose is: the mounting structure of end bearing before a kind of tubular through flow pump motor, comprise that rotating shaft, is fixed on the bearing housing bearing of the shaft extension end of rotating shaft, one is installed in bearing pedestal, on the bearing housing bearing is installed in the upper end of bearing pedestal and is installed in bearing and two sealing rings that are sleeved in the rotating shaft and lay respectively at the bearing housing two ends in the bearing housing with the bearing cap, that bearing pedestal constitutes bearing housing.Described mounting structure also comprises a sleeve, a locking nut and a tab.Wherein: preceding big section outer surface of described sleeve is pre-large post-small taper seat, and the outer surface of back segment is the face of cylinder and is provided with screw thread, and this sleeve is sleeved in the described rotating shaft and between the inner cavity surface and described rotating shaft of described bearing; When the roller of described bearing and the play between the outer ring raceway are between 0.11～0.195mm, adopt described locking nut spinning on the back segment of described sleeve, so that described sleeve is fixed in the described rotating shaft; Described tab is installed on the rear end of described locking nut and locks with a screw; The two ends of described bearing pedestal are respectively equipped with bottom half-bearing case end cap, the two ends of described bearing cap are respectively equipped with first bearing housing end cap, described sealing ring is located in the inner chamber that the inner face by the inner face of described first bearing housing end cap and bottom half-bearing case end cap surrounds, be respectively equipped with some roads maze trough on the inner face of the inner face of described first bearing housing end cap and bottom half-bearing case end cap, correspondingly be provided with some roads maze trough on the outer peripheral face of described sealing ring.
The mounting structure of end bearing before the above-mentioned tubular through flow pump motor, wherein, described sleeve is one axially to cut the opening sleeve of a breach open, so that described sleeve and described rotating shaft are loose fit.
The mounting structure of end bearing wherein, is respectively equipped with a sealing ring between the inner cavity surface of described two sealing rings and the described rotating shaft before the above-mentioned tubular through flow pump motor.
The mounting structure of end bearing before the above-mentioned tubular through flow pump motor, wherein, described bearing is the biserial self-aligning thrust roller bearing.
The technical scheme of the mounting structure of end bearing before the tubular through flow pump motor of the present utility model, employing has the rolling bearing of aligning function, can bear the weight of water pump vane and a part of rotor, the deflection deformation that can also adapt to shaft system of unit, and the trajectory adjustable gaps of bearing, guaranteed that bearing operates in optimum state, and the motor operational excellence can be guaranteed in best trajectory gap, install smoothly.The bearing housing bearing has sufficient intensity and rigidity to bear the vibration that maximum radial load prevents that axle from being; For guaranteeing the easy to maintenance and maintainability of unit maintenance, bearing housing adopts labyrinth sealing, guarantees that both not had oil outwards spills, and does not have outside water and impurity yet and enters in the bearing housing.
Description of drawings
Fig. 1 is the schematic diagram of the mounting structure of end bearing before the tubular through flow pump motor of the present utility model;
Fig. 2 is the profile of the mounting structure of end bearing before the tubular through flow pump motor of the present utility model.
Embodiment
In order to understand the technical solution of the utility model better, below by embodiment particularly and be described in detail in conjunction with the accompanying drawings:
See also Fig. 1 and Fig. 2, the mounting structure of end bearing comprises rotating shaft 1, bearing housing bearing (not shown), a bearing pedestal 2, a bearing cap 3, two sealing rings 4, a bearing 5, a sleeve 6, a locking nut 7 and a tab 8 before the tubular through flow pump motor of the present utility model.Wherein:
The two ends of bearing cap 3 are respectively equipped with first bearing housing end cap 30, and the inner face of first bearing housing end cap 30 is provided with some roads maze trough, and this bearing cap 3 is installed in the upper end of bearing pedestal 2 and constitutes bearing housing with bearing pedestal 2;
Two sealing rings 4 are sleeved in the rotating shaft 1 and lay respectively at the two ends of bearing housing, be that sealing ring 4 is located in the inner chamber that the inner face by the inner face of first bearing housing end cap 30 and bottom half-bearing case end cap 20 surrounds, correspondingly be provided with some roads maze trough on the outer peripheral face of sealing ring 4; Be respectively equipped with a sealing ring 40 between the inner cavity surface of two sealing rings 4 and the rotating shaft 1; Guarantee that both not had oil outwards spills, and does not have outside water and impurity yet and enters in the bearing housing;
Bearing 5 is the biserial self-aligning thrust roller bearing, and it is sleeved in the rotating shaft 1 and is positioned at bearing housing;
Sleeve 6 is one axially to cut the opening sleeve of 2mm breach open, so that its internal diameter is adjustable and be loose fit with rotating shaft 1, preceding big section outer surface of this sleeve 6 is pre-large post-small taper seat, the outer surface of back segment is the face of cylinder and is provided with screw thread, and this sleeve 6 is sleeved in the rotating shaft 1 and between the inner cavity surface and rotating shaft 1 of bearing 5;
When the roller of bearing 5 and the play between the outer ring raceway are between 0.11～0.195mm (during installation, the bearing suit also hangs in the rotating shaft, minimum roller and outer ring raceway gap are maximum play), adopt locking nut 7 spinnings on the back segment of sleeve 6, so that sleeve 6 is fixed in the rotating shaft 1; By regulating the trajectory gap of bearing 5, guaranteed that bearing 5 operates in optimum state, and the motor operational excellence can be guaranteed in best trajectory gap, install smoothly;
Tab 8 is installed on the rear end of locking nut 7 and locks with a screw 80.
The installation steps of end bearing are before the tubular through flow pump motor of the present utility model:
1. sleeve 6 is installed in the rotating shaft 1
2. bearing 5 is before packing into, measures play between the highest roller of this bearing and the outer ring raceway with clearance gauge, and its original play should be between 0.24～0.33mm;
3. bearing 5 is heated to 80～90 ℃, with specific purpose tool bearing 5 is pushed from the rear end of sleeve 6 again and be enclosed within outside the sleeve 6, adorn locking nut 7 then, when screwing locking nut 7, will delay into and constantly measure the minimum roller of bearing 5 and the play between the outer ring raceway;
4. measure the play between bearing 5 minimum rollers and the outer ring raceway once more, the back play is installed should be between 0.11～0.195mm;
Play suitable after, the locking of locking nut 7 usefulness tab 8.
6. fixed bearing block 2;
7. bearing 5 is installed on the bearing pedestal 2;
8. adorn sealing ring 4, again bearing cap 3 is fixed on the upper end of bearing pedestal 2.
9. add LEGP2 grease (being applicable to the big load of low speed) in the bearing 5, be full of space, about 2/3 grease chamber.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (4)
1. the mounting structure of end bearing before the tubular through flow pump motor, comprise that rotating shaft, is fixed on the bearing housing bearing of the shaft extension end of rotating shaft, one is installed in bearing pedestal, on the bearing housing bearing is installed in the upper end of bearing pedestal and is installed in bearing and two sealing rings that are sleeved in the rotating shaft and lay respectively at the bearing housing two ends in the bearing housing with the bearing cap, that bearing pedestal constitutes bearing housing, it is characterized in that, described mounting structure also comprises a sleeve, a locking nut and a tab
Preceding big section outer surface of described sleeve is pre-large post-small taper seat, and the outer surface of back segment is the face of cylinder and is provided with screw thread, and this sleeve is sleeved in the described rotating shaft and between the inner cavity surface and described rotating shaft of described bearing;
When the roller of described bearing and the play between the outer ring raceway are between 0.11～0.195mm, adopt described locking nut spinning on the back segment of described sleeve, so that described sleeve is fixed in the described rotating shaft;
Described tab is installed on the rear end of described locking nut and locks with a screw;
The two ends of described bearing pedestal are respectively equipped with bottom half-bearing case end cap, the two ends of described bearing cap are respectively equipped with first bearing housing end cap, described sealing ring is located in the inner chamber that the inner face by the inner face of described first bearing housing end cap and bottom half-bearing case end cap surrounds, be respectively equipped with some roads maze trough on the inner face of the inner face of described first bearing housing end cap and bottom half-bearing case end cap, correspondingly be provided with some roads maze trough on the outer peripheral face of described sealing ring.
2. the mounting structure of end bearing is characterized in that before the tubular through flow pump motor according to claim 1, and described sleeve is one axially to cut the opening sleeve of a breach open, so that described sleeve and described rotating shaft are loose fit.
3. the mounting structure of end bearing is characterized in that before the tubular through flow pump motor according to claim 1, is respectively equipped with a sealing ring between the inner cavity surface of described two sealing rings and the described rotating shaft.
4. the mounting structure of end bearing is characterized in that described bearing is the biserial self-aligning thrust roller bearing before the tubular through flow pump motor according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200382559U CN201956788U (en) | 2011-02-14 | 2011-02-14 | Installation structure of front bearing of motor in rubular type axial flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200382559U CN201956788U (en) | 2011-02-14 | 2011-02-14 | Installation structure of front bearing of motor in rubular type axial flow pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201956788U true CN201956788U (en) | 2011-08-31 |
Family
ID=44500890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200382559U Expired - Fee Related CN201956788U (en) | 2011-02-14 | 2011-02-14 | Installation structure of front bearing of motor in rubular type axial flow pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201956788U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580414A (en) * | 2012-08-09 | 2014-02-12 | 武汉新威奇科技有限公司 | Three-phase asynchronous motor used for electric screw press |
-
2011
- 2011-02-14 CN CN2011200382559U patent/CN201956788U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580414A (en) * | 2012-08-09 | 2014-02-12 | 武汉新威奇科技有限公司 | Three-phase asynchronous motor used for electric screw press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20160214 |