CN102097884A - Bearing buffer unit for motor - Google Patents
Bearing buffer unit for motor Download PDFInfo
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- CN102097884A CN102097884A CN 201110028372 CN201110028372A CN102097884A CN 102097884 A CN102097884 A CN 102097884A CN 201110028372 CN201110028372 CN 201110028372 CN 201110028372 A CN201110028372 A CN 201110028372A CN 102097884 A CN102097884 A CN 102097884A
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- end cover
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Abstract
The invention provides a bearing buffer unit for a motor, comprising motor spindles, wherein the motor spindles pass through the centers of a stator core and a rotor core, and are respectively fixed in the upper end cap and the lower end cap of a motor by an upper bearing device and a lower bearing device; the upper bearing device comprises upper end cap bearings which are fixed at the spindles; the upper end cap bearings are arranged in a concave platform of the upper end cap of the motor; the upper end cap bearings in the concave platform are respectively provided with an upper bearing elastic element in a radial direction; each upper bearing elastic element is provided with an upper sealing cover plate in an axial direction; the lower bearing device comprises lower end cap bearings which are fixed at the spindles; the lower end cap bearings are arranged in an inner concave platform of the lower end cap of the motor; each lower end cap bearing in the inner concave platform is provided with a lower bearing elastic element in a radial direction; and lower sealing cover plates are arranged in an outer concave platform of the lower end cap of the motor. The above technical scheme is used to overcome the defects that bearings for an existing motor are easily extruded mutually and damaged at the joints of the spindles and the end caps due to high-speed running, heat emission, parking, cooling, deformation and the like, the tail ends of the spindles of the motor are exposed and the like. The bearing buffer unit is used for controlling motors in different freezing operating rooms.
Description
Technical field
The present invention relates to a kind of motor bearing buffer unit.
Background technology
The existing control motor that is used for the freezing operating room of centrifuge; the condition of work of its motor is 2.5 ten thousand to change at a high speed, and operational environment is at subzero 5 ℃, and useful life is all shorter; when needing to shut down in motor is running up, motor causes the centrifuge can't operate as normal because of bearing is impaired.This problem has perplexed the sector for many years, fails effectively to be solved always.Causing the impaired main cause of bearing is that the high rotating speed of centrifuge motor causes bearing heating, bearing outer ring is outwards splashed and is risen, after motor is stopped operating, electric motor end cap quickens to shrink than the bearing cooling because of the reason of ambient temperature soon, thereby pushes bearing outside diameter, and bearing outside diameter makes that mutual extrusion causes impaired between raceway and the ball, after bearing is impaired, the bearing operation noise increases, the vibration aggravation, so that can't pass through product acceptance test operation, causes motor product defective and waste huge; If be directly used in corollary equipments such as centrifuge without inspection process, then cause security incident easily.In addition, the electric machine main shaft tail end stretches out outside the motor bottom end cover, and the required installing space of product is increased, and product placement, packing and transportation also need increase more zero, component costs such as product mounting.
Summary of the invention
At above-mentioned situation, the invention provides a kind of not only simple and compact for structure but also be easy to make, and product qualified rate and product quality are all higher, its function increases, the stable performance noiseless, the product installing space diminishes, and prolong useful life, the motor bearing buffer unit that no waste of raw materials and production cost obviously reduce.
For achieving the above object, a kind of motor bearing buffer unit, it comprises the electric machine main shaft that is interspersed in stator core and rotor core center, electric machine main shaft is individually fixed in motor upper cover and the motor bottom end cover through upper bearing equipment and lower bearing equipment, upper bearing equipment comprises the upper end cover bearing that is fixed in electric machine main shaft, the upper end cover bearing is arranged in the concave station of motor upper cover, upper end cover bearing in concave station radially is provided with the upper bearing (metal) flexible member, the upper bearing (metal) flexible member the top cover labyrinth plate axially is set; Lower bearing equipment comprises the bottom end cover bearing that is fixed in electric machine main shaft, and the bottom end cover bearing is arranged in the interior concave station of motor bottom end cover, in the bottom end cover bearing of interior concave station the lower bearing flexible member is set radially, in the outer concave station of motor bottom end cover the lower seal cover plate is set.
In order to realize result optimizing, improve, improve combination property of the present invention, further step is.
Upper bearing (metal) flexible member and lower bearing flexible member are Composite rubber-ring.
Upper bearing (metal) flexible member and lower bearing flexible member are complex spring.
The motor bottom end cover inner convex platform of motor bottom end cover is 10-20mm with dark H is installed cooperating of rotor end ring anchor ring concave station.
The lower seal cover plate is concordant with the motor bottom end cover.
The inner chamber signalization transducer of lower seal cover plate and outer concave station.
The present invention adopts and comprises the electric machine main shaft that is interspersed in stator core and rotor core center, electric machine main shaft is individually fixed in motor upper cover and the motor bottom end cover through upper bearing equipment and lower bearing equipment, upper bearing equipment comprises the upper end cover bearing that is fixed in electric machine main shaft, the upper end cover bearing is arranged in the concave station of motor upper cover, upper end cover bearing in concave station radially is provided with the upper bearing (metal) flexible member, the upper bearing (metal) flexible member the top cover labyrinth plate axially is set; Lower bearing equipment comprises the bottom end cover bearing that is fixed in electric machine main shaft, the bottom end cover bearing is arranged in the interior concave station of motor bottom end cover, bottom end cover bearing in interior concave station radially is provided with the lower bearing flexible member, the technical scheme of lower seal cover plate is set in the outer concave station of motor bottom end cover, overcome existing motor with bearing easily in main shaft and end cap junction because of running up, heating, stop, cooling, distortion etc. are damaged bearing by mutual extrusion, cause the motor running noises to increase, the vibration aggravation, the product accepted product percentage reduces, waste of raw materials is big, corollary equipment can't be normal, trouble free service, and the electric machine main shaft tail end exposes to scheme the putting to product of bottom end cover, install, transportation brings serious problems and excessive zero parts can cause defectives such as product cost increase.
The beneficial effect that the present invention is produced compared to existing technology:
1, the present invention adopts the metal (upper in the metal (upper device that flexible member radially is set, it has increased the anti-pooling feature of motor, obtain unforeseeable result of use, solved the difficult problem that long-term puzzlement the sector motor can't adapt to refrigerating chamber work, improved the compliance rate of motor;
2, the present invention adopts the metal (upper in the metal (upper device that flexible member radially is set, it has improved the machine operation situation, eliminated machine operation noise and vibration, improved the safe working environment of motor and corollary equipment, prolonged motor and cause few 3 times useful life;
3, the present invention adopts the electric machine main shaft afterbody is built in technical measures in the motor bottom end cover, and it has improved motor and corollary equipment installation environment, has saved the installing space and the product parking space of motor and corollary equipment;
4, the present invention adopts the electric machine main shaft afterbody is built in technical measures in the motor bottom end cover, it has improved the motor package transportation condition, save the parts that constituted when required mounting of product placement and main shaft afterbody expose, shortened the production cycle, saved product cost;
5, the present invention adopts the electric machine main shaft afterbody is built in technical measures in the motor bottom end cover, and it has protected the rotor wire leading-out terminal not to be damaged, and has eliminated various hidden dangers.
The present invention is fit to various freezing operating rooms with controlling motor.Particularly operational environment is at the freezing operating room of subzero 5 ℃ centrifuge control motor.
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Description of drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is the local enlarged diagram of the bottom end cover of Fig. 1.
Fig. 3 is the local enlarged diagram of the signal converter of Fig. 1.
Fig. 4 is the local enlarged diagram of the anchor ring concave station of Fig. 1.
Among the figure: 1, stator core, 2, rotor core, 3, electric machine main shaft, 4, upper bearing equipment, 41, the upper end cover bearing, 42, the upper bearing (metal) flexible member, 43, the top cover labyrinth plate, 5, lower bearing equipment, 51, the bottom end cover bearing, 52, the lower bearing flexible member, 53, the lower seal cover plate, 6, motor upper cover, 61, concave station, 7, the motor bottom end cover, 71, interior concave station, 72, outer concave station, 73, motor bottom end cover inner convex platform, 8, signal converter, 81, signal collecting element, 82, lock-screw, 83, wire hole, 9, rotor end ring, 91, the anchor ring concave station, H-anchor ring concave station is dark.
Embodiment
Shown in accompanying drawing, a kind of motor bearing buffer unit, it comprises the electric machine main shaft 3 that is interspersed in stator core 1 and rotor core 2 centers, electric machine main shaft 3 is individually fixed in motor upper cover 6 and the motor bottom end cover 7 through upper bearing equipment 4 and lower bearing equipment 5, upper bearing equipment 4 comprises the upper end cover bearing 41 that is fixed in electric machine main shaft 3, upper end cover bearing 41 is arranged in the concave station 61 of motor upper cover 6, upper end cover bearing 41 in concave station 61 radially is provided with upper bearing (metal) flexible member 42, upper bearing (metal) flexible member 42 top cover labyrinth plate 43 axially is set; Lower bearing equipment 5 comprises the bottom end cover bearing 51 that is fixed in electric machine main shaft 3, bottom end cover bearing 51 is arranged in the interior concave station 71 of motor bottom end cover 7, bottom end cover bearing 51 in interior concave station 71 radially is provided with lower bearing flexible member 52, in the outer concave station 72 of motor bottom end cover 7 lower seal cover plate 53 is set.
In order to solve the difficult problem that bearing arrangement can't adapt to refrigerating chamber work, present embodiment has adopted the technical measures of installing bearing flexible member 42 and lower bearing flexible member 52 at upper bearing equipment 4 and lower bearing equipment 5 respectively, better solved this industry difficult problem, obtain unforeseeable technique effect, improved the compliance rate of motor qualified product, prolong at least 3 times or more than prior motor useful life.
In order to reach simple in structure, maintain easily, cost reduces, and upper bearing (metal) flexible member 42 and lower bearing flexible member 52 all adopt Composite rubber-ring or complex spring.
Put in order to improve motor, packing, transportation, installation environment, avoid the motor lead impaired, eliminate hidden danger, save motor and the required installing space of corollary equipment, electric machine main shaft 3 tail ends are built in the motor bottom end cover 7, so axially be equipped with in motor bottom end cover inner convex platform 73 ends and rotor end ring 9 corresponding positions and allow bit space, this allows the bit space be anchor ring concave station 91, this anchor ring concave station 91 dark H are that motor bottom end cover inner convex platform 73 stretches into dark in the anchor ring concave station 91, the motor bottom end cover inner convex platform 73 of motor bottom end cover 7 is 10-20mm with dark H is installed cooperating of rotor end ring 9 anchor ring concave stations 91 in the present embodiment, it makes the lower seal cover plate 53 of electric machine main shaft 3 tail ends concordant with motor bottom end cover 7, and it is that best fit is installed dark H that anchor ring concave station 91 is installed dark 15mm.
Multi-functional in order to realize, the inner chamber signalization transducer 8 of lower seal cover plate 53 and outer concave station 72.
Referring to accompanying drawing, the mechanical processing technique of bearing arrangement of the present invention and signal converter, assembly technology flow process: get the raw materials ready → turning processing → drilling and tapping → be coated with on antirust paint → oven dry → motor, bottom end cover, on, parts such as lower seal cover plate are made → are installed the interior signal converter and signal collecting element → bearing arrangement and signal converter assembling installed of bearing → installation Composite rubber-ring or the complex spring → installation electric machine main shaft → verification electric machine main shaft size → top cover labyrinth plate sealing concave station → interior concave station of motor bottom end cover sealing → motor bottom end cover inner convex platform and the supporting installation of rotor end ring anchor ring concave station → lower seal cover plate and finish → use on the fastening bolt fixed electrical machinery, bottom end cover → final assembly is finished.
(1) get the raw materials ready: 1. various zero, parts preparations, make foundry goods and forging on request or select cutting of material for use as motor upper cover 6, motor bottom end cover 7, top cover labyrinth plate 43, lower seal cover plate 53; 2. various standards zero, parts are purchased from the market, promptly select for use Hall element, signal collecting element 81 promptly to select magnet steel and lock-screw 82 for use as signal converter 8.
(2) turning processing: mainly be the turning that motor upper cover 6, motor bottom end cover 7, top cover labyrinth plate 43, lower seal cover plate 53 etc. carry out datum level.
(3) drilling and tapping: mainly be to install bearing arrangement 4 usefulness concave stations 61 and top cover labyrinth plate 43 etc. in the processing motor upper cover 6, the interior concave station 71 of lower bearing equipment 5 usefulness is installed in the motor bottom end cover 7, outer concave station 72, and installation signal converter 8 in the lower seal cover plate 53, signal collecting element 81 and wire hole 83 etc., as the supporting boring of motor upper cover 6 with top cover labyrinth plate 43, the supporting boring of the upper bearing (metal) flexible member 42 in the upper bearing equipment 4, tapping, the supporting boring of the lower bearing flexible member 52 in motor bottom end cover 7 and the lower bearing equipment 5, motor bottom end cover 7 and lower seal cover plate 53, signal converter 8, signal collecting element 81, the supporting boring of lock-screw 82, tapping, and the supporting boring processing of the inner convex platform of motor bottom end cover 7 and rotor end ring 9 anchor ring concave stations 91.Wherein: in the boring processing, upper end cover bearing 41 external diameters in concave station 61 internal diameters of motor upper cover 6 and the upper bearing equipment 4, top cover labyrinth plate 43 external diameters, in the motor bottom end cover 7 in concave station 71, outer concave station 72 internal diameters and the lower bearing equipment 5 concentricity of bottom end cover bearing 51 external diameters, lower seal cover plate 53 external diameters be not more than 0.015-0.20mm.
(4) be coated with antirust paint.
(5) oven dry.
(6) motor upper cover 6, motor bottom end cover 7, top cover labyrinth plate 43, lower seal cover plate 53 and signal collecting element 81 etc. zero, parts complete.
(7) install end cap bearing 41, bottom end cover bearing 51.
(8) Composite rubber-ring or complex spring are installed, in the gap as bearing and end cap formation that O type Composite rubber-ring is packed on request,, are made O type Composite rubber-ring evenly stressed with hole and back-up ring location.
(9) installation electric machine main shaft 3, and attention can not impact electric machine main shaft 3 with big external force when installing, to prevent to damage bearing.
(10) verification electric machine main shaft 3 sizes.
(11) concave station of top cover labyrinth plate 43 sealing motor upper covers 6.
(12) concave station 71 sealings in the motor bottom end cover 7.
(13) constant and be convenient to motor and put, pack, transport, install in order to satisfy the motor external dimensions, electric machine main shaft 3 tail ends are built in the motor bottom end cover 7, motor bottom end cover inner convex platform 73 and the 91 supporting installations of rotor end ring 9 anchor ring concave stations, so adopt turning one anchor ring concave station 91 on rotor end ring 9, guarantee the axial space of assembling.
(14) lower seal cover plate 53 is installed signal converter 8 and signal collecting element 81 with the inner chamber of outer concave station 72, signal collecting element 81-magnet steel is fixed in electric machine main shaft 3 tail ends through lock-screw 82, install before the lower seal cover plate 53, earlier signal converter 8-Hall element lead is passed wire hole 83, again Hall element is fixed on the relevant position of lower seal cover plate 53 inner chambers with glue, then the lower seal cover plate 53 outer concave station 72 of packing into.
(15) assembling of bearing arrangement and signal converter is finished.
(16) with fastening bolt fixed electrical machinery upper end cover 6, motor bottom end cover 7.
(17) complete machine all assembles and finishes.
Referring to accompanying drawing, operate as normal of the present invention is: the motor that will be provided with the bearing buffer unit is made the power of corollary equipment, does the auxiliary power equipment and correct the installation firmly of the indoor centrifuge of freezing work as the control motor that will be provided with the bearing buffer unit.In the work; the indoor centrifuge of freezing work runs up with 2.5 ten thousand commentaries on classics and is in the subzero 5 ℃ operational environment; when shutting down, motor is because of the effect of flexible member in the bearing buffer unit, and its bearing arrangement can not be damaged because of the influence of heating between the parts with cooling range.Concrete working condition is that machinery equipment is when needing to stop in running up, upper bearing equipment 4, upper end cover bearing 41 in the lower bearing equipment 5, bottom end cover bearing 51 is respectively at upper bearing (metal) flexible member 42, under the effect of lower bearing flexible member 52, make prior to upper end cover bearing 41, the motor upper cover 6 of bottom end cover bearing 51 coolings, motor bottom end cover 7 is through upper bearing (metal) flexible member 42, the cushioning effect of lower bearing flexible member 52, make upper end cover bearing 41, bottom end cover bearing 51 obtains the time of a release heat, thereby reach motor upper cover 6, motor bottom end cover 7 and upper end cover bearing 41, it is synchronous that the cooling of bottom end cover bearing 51 reached in the time difference, in this buffering course, motor upper cover 6, the heating of motor bottom end cover 7, distortion, cooling and extruding upper end cover bearing 41, the unlikely generation of the phenomenon of bottom end cover bearing 51, thereby the normal operation of realization centrifuge.
Claims (6)
1. motor bearing buffer unit, it is characterized in that it comprises the electric machine main shaft (3) that is interspersed in stator core (1) and rotor core (2) center, electric machine main shaft (3) is individually fixed in motor upper cover (6) and the motor bottom end cover (7) through upper bearing equipment (4) and lower bearing equipment (5), upper bearing equipment (4) comprises the upper end cover bearing (41) that is fixed in electric machine main shaft (3), upper end cover bearing (41) is arranged in the concave station (61) of motor upper cover (6), upper end cover bearing (41) in concave station (61) radially is provided with upper bearing (metal) flexible member (42), upper bearing (metal) flexible member (42) top cover labyrinth plate (43) axially is set; Lower bearing equipment (5) comprises the bottom end cover bearing (51) that is fixed in electric machine main shaft (3), bottom end cover bearing (51) is arranged in the interior concave station (71) of motor bottom end cover (7), bottom end cover bearing (51) in interior concave station (71) radially is provided with lower bearing flexible member (52), in the outer concave station (72) of motor bottom end cover (7) lower seal cover plate (53) is set.
2. motor bearing buffer unit according to claim 1 is characterized in that upper bearing (metal) flexible member (42) and lower bearing flexible member (52) are Composite rubber-ring.
3. motor bearing buffer unit according to claim 1 is characterized in that upper bearing (metal) flexible member (42) and lower bearing flexible member (52) are complex spring.
4. motor bearing buffer unit according to claim 1 is characterized in that the motor bottom end cover inner convex platform (73) of motor bottom end cover (7) is 10-20mm with dark H is installed cooperating of rotor end ring (9) anchor ring concave station (91).
5. motor bearing buffer unit according to claim 1 is characterized in that lower seal cover plate (53) is concordant with motor bottom end cover (7).
6. motor bearing buffer unit according to claim 1 is characterized in that the inner chamber signalization transducer (8) of lower seal cover plate (53) and outer concave station (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110028372 CN102097884B (en) | 2011-01-26 | 2011-01-26 | Bearing buffer unit for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110028372 CN102097884B (en) | 2011-01-26 | 2011-01-26 | Bearing buffer unit for motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102097884A true CN102097884A (en) | 2011-06-15 |
| CN102097884B CN102097884B (en) | 2012-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110028372 Expired - Fee Related CN102097884B (en) | 2011-01-26 | 2011-01-26 | Bearing buffer unit for motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102097884B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602783A (en) * | 2017-02-21 | 2017-04-26 | 浙江永发机电有限公司 | Multifunctional composite motor |
| CN111193348A (en) * | 2020-01-20 | 2020-05-22 | 深圳市丞辉威世智能科技有限公司 | Drive motor and power output device |
| CN115102357A (en) * | 2022-07-25 | 2022-09-23 | 常州市丰源微特电机有限公司 | Miniature linear stepping motor, press-fitting orientation device and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87204465U (en) * | 1987-07-30 | 1988-08-03 | 中国石油化工总公司长岭炼油厂 | Motor end cover for long period operating |
| CN1327292A (en) * | 2001-04-12 | 2001-12-19 | 金马达制造厂有限公司 | Shock reducing method for small motor and bearing shock reducing ring thereof |
| CN101465584A (en) * | 2008-10-30 | 2009-06-24 | 东明机电（深圳）有限公司 | Dual-stator brushless DC motor and braking method thereof |
-
2011
- 2011-01-26 CN CN 201110028372 patent/CN102097884B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87204465U (en) * | 1987-07-30 | 1988-08-03 | 中国石油化工总公司长岭炼油厂 | Motor end cover for long period operating |
| CN1327292A (en) * | 2001-04-12 | 2001-12-19 | 金马达制造厂有限公司 | Shock reducing method for small motor and bearing shock reducing ring thereof |
| CN101465584A (en) * | 2008-10-30 | 2009-06-24 | 东明机电（深圳）有限公司 | Dual-stator brushless DC motor and braking method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602783A (en) * | 2017-02-21 | 2017-04-26 | 浙江永发机电有限公司 | Multifunctional composite motor |
| CN111193348A (en) * | 2020-01-20 | 2020-05-22 | 深圳市丞辉威世智能科技有限公司 | Drive motor and power output device |
| CN115102357A (en) * | 2022-07-25 | 2022-09-23 | 常州市丰源微特电机有限公司 | Miniature linear stepping motor, press-fitting orientation device and use method thereof |
| CN115102357B (en) * | 2022-07-25 | 2022-11-01 | 常州市丰源微特电机有限公司 | Miniature linear stepping motor, press-fitting orientation device and use method thereof |
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| Publication number | Publication date |
|---|---|
| CN102097884B (en) | 2012-12-26 |
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