CN107979225A - motor and wind generating set with small bearing structure - Google Patents
motor and wind generating set with small bearing structure Download PDFInfo
- Publication number
- CN107979225A CN107979225A CN201711481201.8A CN201711481201A CN107979225A CN 107979225 A CN107979225 A CN 107979225A CN 201711481201 A CN201711481201 A CN 201711481201A CN 107979225 A CN107979225 A CN 107979225A
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- motor
- flange
- dead axle
- small bearing
- bearing arrangement
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- 230000007246 mechanism Effects 0.000 claims description 35
- 241000239290 Araneae Species 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000005284 excitation Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 description 12
- 238000004804 winding Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000005266 casting Methods 0.000 description 6
- 238000009423 ventilation Methods 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 241000233855 Orchidaceae Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/187—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to inner stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention provides a motor with a small bearing structure and a wind generating set. The motor comprises a stator, a rotor, a fixed shaft, a rotating shaft and a bearing assembly, wherein the bearing assembly comprises a front bearing and a rear bearing, the rotating shaft is sleeved outside the fixed shaft, a rotating shaft flange is arranged on the periphery of the rotating shaft, a fixed shaft flange is arranged on the periphery of the fixed shaft, and the rotating shaft flange and the fixed shaft flange are provided with structures which enable the natural frequency of the motor to be larger than the excitation frequency of the motor. The wind generating set comprises the motor with the small bearing structure. The motor and the wind generating set with the small bearing structure have the advantages of low cost, high rigidity, good reliability, easy maintenance and the like.
Description
Technical field
The present invention relates to technical field of wind power generation, more particularly to the motor with small bearing arrangement, with the motor
Wind power generating set.
Background technology
Wind-driven generator is the power equipment for converting wind energy into electric energy and exporting.Existing direct wind-driven generator has two
Kind bearing arrangement：Big bearing arrangement and small bearing arrangement.As shown in Figure 1, the wind-driven generator with small bearing arrangement includes determining
Son, rotor, dead axle 1, shaft 2 and bearing assembly.Shaft 2 is set in outside dead axle 1 by bearing assembly and being capable of opposite 1 turn of dead axle
Dynamic, bearing assembly includes fore bearing 3 and rear bearing 4, wherein, fore bearing 3 be arranged on shaft front end and dead axle 1 front end it
Between；Bearing 4 is arranged between the rear end of shaft 2 and dead axle 1 afterwards.The rear end of dead axle 1 is connected with exterior base (not shown).It is fixed
Son is installed on dead axle 1 by stator support 5, and one end of stator support 5 is connected with dead axle 1, other end support iron core winding 6.
Rotor is supported by rotor field spider 7 and is installed on by rotor field spider in shaft 2, and 7 one end of rotor field spider is connected with shaft 2, another
End is connected with rotor rim 19.
Bearing cost is very sensitive to diameter, and same power wind-driven generator, large diameter single bearing cost can reach small
Even more than ten times of the several times of diameter duplex bearing.Thus, relative to the generator with big bearing arrangement, there is small bearing arrangement
Generator has the advantages that cost is low, and still, generator belongs to disc-shaped structure on the whole, axial firm in small bearing arrangement
Spend low, there are mesomerism risk for generator.Motor overall stiffness usually is improved by increasing bearing diameter in the prior art,
It is of high cost although rigidity can be improved.
In addition, generator needs to have the functions such as remarkable, brake, locking, with reference to Fig. 2, on the middle partition plate of stator support 5
Ventilation hole 14 is offered, in order to avoid the moisture in air or impurity enter the inside of motor, the grade component of iron core winding 6 is caused
Corrosion, it is also necessary to possess air filtering function.And as shown in Figure 1, in small bearing arrangement, since bearing diameter is smaller, size
Limitation is so that brake with remarkable function from being arranged in bearing inner race diameter with inner, and therefore, brake 12, manhole 8 and 9 and locking machine
Structure 13, air filtration mechanism 10 (such as air filtration cotton) are together arranged in bearing outer diameter to the radial direction of stator inner ring diameter
In space.Since brake disc 12a is arranged on shaft flange so that the maintenance space of rear bearing 4 is narrow, and rear bearing 4 is safeguarded logical
Road L1 is narrow (with reference to the dotted arrow in Fig. 3).The installation of air filtration mechanism 10, safeguard that space is narrow, and accessibility is poor, and ties up
Shield air filtration mechanism 10 needs to lock generator, it has not been convenient to safeguards and influences unit operation.
Thus, urgent need to resolve has the low generator axial rigidity of small bearing arrangement, braking mechanism, locking mechanism, air
The component maintenance spaces such as filtration apparatus, rear bearing are narrow, safeguard the problem of inconvenient.
The content of the invention
It is an object of the invention to while keeping having the advantages that the low cost of motor of small bearing arrangement, improve tool
There is the axial rigidity of the motor of small bearing arrangement, improve more than motor intrinsic frequency to driving frequency, avoid covibration.
In addition, another object of the present invention is to have a case that the axial rigidity of the motor of small bearing arrangement in increase
Under, the maintenance convenience of raising each component of motor internal.
An aspect of of the present present invention provides a kind of motor with small bearing arrangement, including stator, rotor, dead axle 1, shaft
2 and bearing assembly, bearing assembly includes fore bearing 3 and rear bearing 4, and shaft 2 is sleeved on the outside of dead axle 1, and the periphery of shaft 2 is set
There is a shaft flange 16, the periphery of dead axle 1 is provided with dead axle flange 17, and shaft flange 16 and dead axle flange 17 have and make consolidating for motor
There is the structure that frequency is more than the driving frequency of motor.
Another aspect provides a kind of wind power generating set, wind power generating set has small bearing including above-mentioned
The motor of structure.
Compared with prior art, advantageous effects of the invention include：By dead axle, shaft (casting) and stator, rotor
The flange diameter increase of connection, and on the basis of motor internal existing space, to additional member (brake, locking, the filter in motor
Cotton, manhole) rational deployment is carried out, obtain the Novel wind hair that high rigidity, high reliability, cost are low, performance is good, economic value is high
Motor.
Brief description of the drawings
By the description to exemplary embodiment below in conjunction with the accompanying drawings, these and/or other side will be clear and more
It is readily appreciated that, in the accompanying drawings：
Fig. 1 is the cross-sectional view of the wind-driven generator of the prior art with small bearing arrangement；
Fig. 2 is the left view of wind-driven generator shown in Fig. 1；
Fig. 3 is the partial enlargement structural representation of part below wind-driven generator axis shown in Fig. 1；
Fig. 4 is the cross-sectional view of the motor according to an exemplary embodiment of the present invention with small bearing arrangement；
Fig. 5 is the left view of the motor with small bearing arrangement shown in Fig. 4；
Fig. 6 is the electrical axis with small bearing arrangement of Fig. 4 with the partial enlargement structural representation of lower part.
Drawing reference numeral explanation：
1- dead axles, 2- shafts, 3- fore bearings, bearing after 4-, 5- stator supports, 6- iron core windings, 7- rotor field spiders, 8- are fixed
Ziren hole, 9- rotor manholes, 10,11- air filtrations mechanism, 12,15- braking mechanisms, 12a- brake discs, 12b, 15b- brake system
Dynamic device, 13- locking mechanisms, 14- ventilation holes, 15a- brake rings, 16- shaft flanges, 17- dead axle flanges, 18- reinforcing ribs, 19- turn
Sub- yoke.
Embodiment
Below in conjunction with attached drawing and exemplary embodiment, the principle of the present invention is described in further detail, so that the skill of the present invention
Art solution becomes apparent from.It should be noted that the small bearing mentioned by the application is the bearing with big bearing in contrast,
Typically, big bearing refers to the bearing that remarkable passage (manhole) can be set in axis, small bearing refer to due to size limitation and
The bearing of remarkable passage cannot be set in axis.The requirement of remarkable passage is referred to 4.2 sections of the regulation of standard en50308,
That is the regulation of en 547-1 and en547-3.The present invention is directed to the motor of small bearing arrangement, to determining for the motor of small bearing arrangement
Axis and shaft carry out structure improvement, and the axial rigidity of motor is improved with this.
Specifically, in order to solve the problems, such as to have the axial rigidity of the motor of small bearing arrangement low, of the invention is exemplary
Embodiment increases as the outward flange diameter of the dead axle 1 of casting and shaft 2, so that increase the intrinsic frequency of rotor and stator,
The intrinsic frequency of motor is avoided the electromagnetic excitation frequency of motor, occur to avoid covibration.In order to further ensure that motor
Axial rigidity, can also be set on dead axle outward flange (referred to as dead axle flange) and shaft outward flange (being referred to as shaft flange)
Put reinforcing rib 18.Improve relative to the structure of the motor of the prior art to become apparent from the motor of the description present invention, first join below
The motor of the prior art with small bearing arrangement is described according to Fig. 1 to Fig. 3.
Fig. 1 is the cross-sectional view of the wind-driven generator of the prior art with small bearing arrangement.Fig. 2 is Fig. 1
The left view of shown wind-driven generator.Fig. 3 is the partial enlargement structural representation of part below wind-driven generator axis shown in Fig. 1
Figure.
As shown in Figure 1 to Figure 3, the length that shaft flange 16 extends from the body of shaft 2 is relatively small, normal conditions
Under, its development length meets shaft 2 and the connection fixed function of rotor field spider 7 and brake disc 12a.Similarly, dead axle
The length that flange 17 extends from the body of dead axle 1 is also relatively small, it is generally the case that its development length meet dead axle 1 with
The connection fixed function of stator support 5.In this case, the tie point P and iron core of stator support 5 and dead axle flange 17
Radial distance D1 between winding 6 is larger, the footpath between the tie point Q and rotor rim 19 of rotor field spider 7 and shaft flange 16
It is also larger to distance D2.However, iron core winding 6 and rotor rim 19 are the concentration parts of generator quality, in rotor
During relative to stator rotation, rotor can produce excitation to stator, and when driving frequency is close with intrinsic frequency, motor is fixed
The amplitude of son and rotor can significantly increase, and covibration occur.The distance between stator and fixing point P D1 and rotor and its
The distance between fixing point Q D2 directly affects its intrinsic frequency and the amplitude of vibration.Distance D1 and D2 is bigger, and motor is easier
Unstability, so that easier damage wind power generating set.
However, in the motor with small bearing arrangement of exemplary embodiment according to the present invention, shaft flange 16
The diameter of diameter and dead axle flange 17 significantly increases, to improve the axial rigidity of motor.Fig. 4 to Fig. 6 is shown according to this hair
The structure of the motor of bright exemplary embodiment.In the following, being described in detail with reference to the drawings according to an exemplary embodiment of the present invention has
The motor of small bearing arrangement.As shown in Figs. 4-6, motor include dead axle 1, the shaft 2 for being sleeved on the outside of dead axle 1, stator support 5,
Rotor field spider 7 and bearing assembly, bearing assembly include fore bearing 3 and rear bearing 4.
Shaft flange 16 is arranged on the outer wall of the rear end of shaft 2, and shaft flange 16 is connected with rotor field spider 7.With it is existing
Small bearing arrangement in technology is compared, the diameter increase of shaft flange 16, race diameter and the shaft flange 16 of shaft flange 16
The ratio between inner ring diameter be more than 1.2, can be 1.2~4.0, so as to increase the intrinsic frequency of rotor.Preferably, shaft flange 16
The ratio between the inner ring diameter of race diameter and shaft flange 16 be alternatively 1.5~2.5.It is further preferred that shaft flange 16
The ratio between inner ring diameter of race diameter and shaft flange 16 can be 2.0.However, the present invention is not limited thereto, can also be by shaft flange 16
Race diameter be enlarged to junction directly with rotor, shaft flange 16 can be directly connected with rotor rim 19.
Dead axle flange 17 is arranged on the outer wall of dead axle 1, and dead axle flange 17 is connected with stator support 5.With in the prior art
Small bearing arrangement compare, the increase of the diameter of dead axle flange 17, the race diameter of dead axle flange 17 and the inner ring of dead axle flange 17
Diameter ratio is more than 1.2, can be 1.2~4.0, so as to increase the intrinsic frequency of stator.Preferably, the outer ring of dead axle flange 17
The ratio between inner ring diameter of diameter and dead axle flange 17 is 1.5~2.5.It is further preferred that the race diameter of dead axle flange 17 with
The ratio between inner ring diameter of dead axle flange 17 is 2.0.However, the present invention is not limited thereto, can also add the race diameter of dead axle flange 17
Can directly it be connected as the junction directly with stator, dead axle flange 17 with iron core winding 6 greatly.
Here, the inner ring diameter of shaft flange 16 is the spindle outer diameter of 16 junction of shaft 2 and shaft flange, dead axle method
The inner ring diameter of orchid 17 is the dead axle outside diameter of dead axle 1 and 17 junction of dead axle flange.
As shown in fig. 6, after the race diameter of increase shaft flange 16 and dead axle flange 17, stator support 5 and dead axle method
Radial distance D4 between orchid 17 tie point P' and the iron core winding 6 of big quality reduces, and rotor field spider 7 and shaft flange
Radial distance D3 between 16 tie point Q' and rotor rim 19 also diminishes.When motor is there are during axial excitation, driving frequency
Motor intrinsic frequency is unable to reach, motor is not in unstability, so as to add axial stability.
By the way that 17 diameter of dead axle flange for being used as casting is increased, the axial natural frequency of stator is improved, casting will be used as
16 diameter of the shaft flange increase of part, improves the axial natural frequency of rotor, so that the axial natural frequency of motor is improved,
Avoid motor electromagnetic driving frequency and improve motor axial rigidity.Although in an embodiment of the present invention, there is provided pass through increasing
The race diameter of big shaft flange 16 and dead axle flange 17 improves the example of axial rigidity, however, the present invention is not limited thereto, as long as
Shaft flange 16 and dead axle flange 17 have make motor intrinsic frequency be more than motor driving frequency structure.
Preferably, more reinforcing ribs 18, every reinforcing rib 18 are arranged on the dead axle flange 17 and shaft flange 16 of increase
It is radially arranged, more reinforcing ribs 18 along the circumferentially-spaced arrangement of dead axle flange 17 and shaft flange 16 (such as it is circumferential uniformly between
Every arrangement), the quantity of reinforcing rib 18 can need to select according to axial rigidity.
Preferably, axial spacing between shaft flange 16 and dead axle flange 17 can also be increased, with bearing after increase by 4
Safeguard space.
Under normal conditions, manhole will realize remarkable function, and minimum diameter can not be less than 400mm.Implementing according to the present invention
In the motor with small bearing arrangement of example, since size limits, manhole can not be arranged on the radially inner side of bearing.However, root
According to the embodiment of the present invention, 17 enlarged diameter of shaft flange 16 and dead axle flange, provides enough in dead axle 1 and the outside of shaft 2
Space, stator manhole 8 may be provided on dead axle flange 17, and rotor manhole 9 may be provided on shaft flange 16.The quantity of manhole
It can be arranged as required to, for example, stator manhole 8 can be 2, rotor manhole 9 can be 3 respectively.
In motor according to embodiments of the present invention, the also construction with braking mechanism 12 of the prior art of braking mechanism 15
It is different.As shown in figure 4, braking mechanism 15 includes brake ring 15a and can apply the skidding of brake force to brake ring 15a
Device 15b.Brake ring 15a is the annular barrel axially extended from shaft flange 16 or rotor field spider 7.During brake, brake system
Dynamic device 15b clamps brake ring 15a, reaches the effect of skidding.With the brake being disposed radially in the prior art shown in Fig. 1
Hull 12a is different, and the brake ring 15a of the embodiment of the present invention is axially disposed ring, and space is added for the maintenance of rear bearing.
In the present embodiment, brake ring 15a is arranged on rotor field spider 7, and brake actuator 15b is arranged in stator support 5
On.Brake ring 15a, can also be arranged on shaft flange 16, brake actuator 15b is arranged in by however, the present invention is not limited thereto
Dead axle flange 17 is first-class.In addition, the position of brake ring 15a and brake actuator 15b can exchange.The number of braking mechanism 15
Amount can select as needed, and in the present embodiment, the quantity of braking mechanism 15 is 2.
With reference to Fig. 4 and Fig. 5, locking mechanism 13 can include stop pin and the lock slots coordinated with it, in the present embodiment,
Stop pin and lock slots can be arranged on dead axle flange 17 and shaft flange 16.It can meet that locking carries by local reinforcement
To the rigidity and intensity requirement of structure under lotus.However, the present invention is not limited thereto, stop pin and lock slots can also be separately positioned on fixed
On submounts 5, rotor field spider 7, shaft flange 16 and dead axle flange 17.The quantity of locking mechanism 13 can be according to the intensity of locking
Demand is set, for example, could be provided as 2 in the present embodiment.
Stator support 5 can include the middle partition plate being disposed radially and the circumferentially arranged branch for being used to support iron core winding
Support member.In an embodiment of the present invention, the filter mechanism for being filtered to cooling air may be provided at stator support 5,
Specifically, can be arranged on the middle partition plate of stator support 5.Multiple ventilation holes are offered on the middle partition plate of stator support 5.For
Avoid the moisture in air or impurity from entering the inside of motor, the grade component of iron core winding 6 is caused to corrode, set in ventilation hole
Empty gas filter mechanism 11 (for example, filter cotton), it is preferable that multiple ventilation holes and multiple air filtration mechanisms 11 can be along stator branch
Frame 5 is circumferentially.Air filtration mechanism 11 is arranged on the middle partition plate of stator support 5, when need to filter element 11 into
When row is replaced or repaired, it is not necessary to lock out motor.With the mode of 10 lateral arrangement of air filter in Fig. 1 (axially disposed)
Difference, in an embodiment of the present invention, air filtration mechanism 11 arrange (radially arranged) vertically, dust is not easy in air mistake
Accumulated on filter structure 11, improve ventilation effect.
In the present embodiment, dead axle 1, shaft 2, shaft flange 16, dead axle flange 17 can be casting, 5 He of stator support
Rotor field spider 7 can be steel plate weldment.Compared with weldment, casting is easy to moulding, it is easy to accomplish structure is to rigidity and intensity
Demand.
As shown in Figs. 4-6, in the present embodiment, it is necessary to which the locking mechanism 13 safeguarded, air filtration mechanism 11 are in cabin
Interior, braking mechanism 15 is set between the stator and the rotor, but the dimension to braking mechanism 15 can be achieved in maintenance personnel in the cabin
Shield, the maintenance space of rear bearing 4, which there has also been, to be significantly improved.However, the present invention is not limited thereto, filter pulp, locking mechanism, manhole, braking machine
The setting position of structure is not limited to the layout provided in figure, motor radially, circumferentially with axial direction, the position of above-mentioned component
Arrangement can arbitrarily be exchanged by putting, such as the position of filter pulp and locking mechanism can be exchanged.
The motor of the present invention uses cheap small bearing, and by increasing the race diameter of flange, in addition auxiliary is set
Reinforcing rib 18, enough axial rigidities are provided for generator；Pass through braking mechanism, locking mechanism, manhole and air filtration mechanism
Rational deployment so that each additional member obtain abundance installation safeguard space.
Exemplary embodiment according to the present invention, the above-mentioned motor with small bearing arrangement is specially wind-driven generator, its
The internal diameter size of dead axle is less than sets the size corresponding to remarkable passage in dead axle radially inner side.
A kind of wind power generating set is provided according to another aspect of the present invention, it includes above-mentioned with small bearing arrangement
Motor.
In conclusion cloth of the present invention by the bearing to the motor with small bearing arrangement to structure between stator core
Office, can solve the problems, such as that there is the low axial rigidity of the motor of small bearing arrangement, brake, locking, filter pulp to safeguard that space is narrow.With
Cheap small bearing obtains the reliability that bearing can just be brought expensive greatly and safeguards space, improves motor axial rigidity and reduction
Generator cost, application value are high.
Although the exemplary embodiment with reference to the present invention is specifically illustrated in and the invention has been described, this area is general
Logical technical staff will be understood that, not being departed from the spirit and scope of the present invention limited such as claim and their equivalent
In the case of, the various changes in form and details can be made herein.Should only in the sense that descriptive rather than for
The purpose of limitation considers embodiment.Therefore, the scope of the present invention is limited by the embodiment of the present invention, but
It is defined by the claims, all differences in the range of this are to be interpreted as being included in the invention.
Claims (11)
1. a kind of motor with small bearing arrangement, including stator, rotor, dead axle (1), shaft (2) and bearing assembly, the axis
Bearing assembly includes fore bearing (3) and rear bearing (4), and the shaft (2) is sleeved on the outside of dead axle (1), the periphery of the shaft (2)
Shaft flange (16) is provided with, the periphery of the dead axle (1) is provided with dead axle flange (17), it is characterised in that the shaft method
Blue (16) and the dead axle flange (17) have and make structure of the intrinsic frequency of the motor more than the driving frequency of the motor.
2. the motor according to claim 1 with small bearing arrangement, it is characterised in that outside the shaft flange (16)
The ratio between loop diameter and shaft flange (16) inner ring diameter be more than 1.2, the race diameter of the dead axle flange (17) with it is described
The ratio between inner ring diameter of dead axle flange (17) is more than 1.2.
3. the motor according to claim 2 with small bearing arrangement, it is characterised in that outside the shaft flange (16)
The ratio between loop diameter and shaft flange (16) inner ring diameter are 1.5~4.0；The race diameter of the dead axle flange (17) and institute
The ratio between inner ring diameter of dead axle flange (17) is stated as 1.5~4.0.
4. the motor according to claim 1 with small bearing arrangement, it is characterised in that described with small bearing arrangement
Motor further includes the rotor field spider (7) for connecting the shaft flange (16) and the rotor, and described fixed for connecting
The stator support (5) of shaft flange (17) and the stator, the motor further include braking mechanism (15), the braking mechanism (15)
Including brake ring (15a) and brake actuator (15b), the brake ring (15a) is arranged on the shaft flange (16) or described
On rotor field spider (7), the brake actuator (15b) is arranged on the dead axle flange (17) or the stator support (5), institute
It is the annular barrel axially extended from the shaft flange (16) or the rotor field spider (7) to state brake ring (15a).
5. the motor according to claim 4 with small bearing arrangement, it is characterised in that described with small bearing arrangement
Motor further includes locking mechanism (13), and the locking mechanism (13) includes being arranged on the dead axle flange (17) or the stator branch
Stop pin on frame (5), and the lock slots being arranged on the shaft flange (16) or the rotor field spider (7).
6. the motor according to claim 4 with small bearing arrangement, it is characterised in that described with small bearing arrangement
Motor further includes filter mechanism (11), and the stator support (5) includes the middle partition plate being disposed radially, the filter mechanism (11)
It is arranged on the middle partition plate.
7. the motor according to claim 1 with small bearing arrangement, it is characterised in that described with small bearing arrangement
Motor further includes the manhole (8,9) being arranged on the shaft flange (16) and/or on the dead axle flange (17).
8. the motor according to claim 1 with small bearing arrangement, it is characterised in that described with small bearing arrangement
Motor further includes one or more reinforcing rib being arranged on the shaft flange (16) and/or the dead axle flange (17)
(18), the reinforcing rib (18) is radially arranged, and the more reinforcing ribs (18) are along the shaft flange (16) and/or described fixed
The circumferentially-spaced arrangement of shaft flange (17).
9. the motor according to claim 1 with small bearing arrangement, it is characterised in that described with small bearing arrangement
The intrinsic frequency of motor includes the intrinsic frequency of the stator and the intrinsic frequency of the rotor.
10. the motor as claimed in any of claims 1 to 9 with small bearing arrangement, it is characterised in that the tool
The motor for having small bearing arrangement is wind-driven generator, and the internal diameter size of the dead axle is less than to be set in the dead axle radially inner side
Size corresponding to people's passage.
11. a kind of wind power generating set, it is characterised in that the wind power generating set is included such as any one of claim 1-10
The motor with small bearing arrangement.
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| CN110829644A (en) * | 2019-11-08 | 2020-02-21 | 上海电气风电集团股份有限公司 | Support device, stator module and wind driven generator |
| CN114109730A (en) * | 2021-11-29 | 2022-03-01 | 新疆金风科技股份有限公司 | Wind generating set shafting and wind generating set |
| CN114337082A (en) * | 2020-09-29 | 2022-04-12 | 新疆金风科技股份有限公司 | Brake locking device for motor, motor and wind generating set |
| CN114421674A (en) * | 2021-12-20 | 2022-04-29 | 西安中车永电捷力风能有限公司 | Integrated high-strength rotor structure for medium-speed permanent magnet wind driven generator |
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| CN114337082A (en) * | 2020-09-29 | 2022-04-12 | 新疆金风科技股份有限公司 | Brake locking device for motor, motor and wind generating set |
| CN114337082B (en) * | 2020-09-29 | 2023-05-16 | 新疆金风科技股份有限公司 | Brake locking device for motor, motor and wind generating set |
| CN114109730A (en) * | 2021-11-29 | 2022-03-01 | 新疆金风科技股份有限公司 | Wind generating set shafting and wind generating set |
| CN114421674A (en) * | 2021-12-20 | 2022-04-29 | 西安中车永电捷力风能有限公司 | Integrated high-strength rotor structure for medium-speed permanent magnet wind driven generator |
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| CN107979225B (en) | 2023-11-17 |
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