CN104467329B - A kind of multithread narrow gauge asynchronous traction motor - Google Patents
A kind of multithread narrow gauge asynchronous traction motor Download PDFInfo
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- CN104467329B CN104467329B CN201410809871.8A CN201410809871A CN104467329B CN 104467329 B CN104467329 B CN 104467329B CN 201410809871 A CN201410809871 A CN 201410809871A CN 104467329 B CN104467329 B CN 104467329B
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- multithread
- motor
- traction motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/10—Applying solid insulation to windings, stators or rotors
- H02K15/105—Applying solid insulation to windings, stators or rotors to the windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/12—Asynchronous induction motors for multi-phase current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/32—Structural association of asynchronous induction motors with auxiliary mechanical devices, e.g. with clutches or brakes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/40—Windings characterised by the shape, form or construction of the insulation for high voltage, e.g. affording protection against corona discharges
-
- 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
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
-
- 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
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a kind of multithread narrow gauge asynchronous traction motor, including stator, rotor, end cap, bearing, rosette, speed measuring device, stator includes stator core and stator winding, 200 integrated class B insulation structures of stator winding are simultaneously made using solvent-free organic silicon impregnating varnish cooperation vacuum pressure impregnation technique, end cap is provided with wire hole, three-phase lead-out wire passes through wire hole thereto, in rosette, embedding has electric insulation silica gel, stator core two ends are provided with step, and stator pressing ring is provided with the trim ring seam with step cooperation.Because the structure of stator and processing technique can realize depletion of QI gap insulation, electric insulation silica gel improves electrical insulation properties in rosette, compensate for the inadequate defect of electrical distance, the embedded fit structure of stator core and stator pressing ring makes the size of out frame go for narrow gage locomotive.Therefore this traction motor goes for narrow gauge railway, and is applied to 3kV direct current and exchanges double-current power supply system with 25kV.
Description
Technical field
The present invention relates to railway locomotive electric drive technology field, more particularly, to a kind of multithread narrow gauge asynchronous traction is electronic
Machine.
Background technology
Narrow gauge refers to that gauge is less than the track of 1435mm standard gauge, the width of most arrow gauge track be 1067mm or
762mm etc..Narrow gauge laying cost is few, and radius of curvature is little, and carriage weight is lighter, can be used for the larger route gradient.
With the development of Power Electronic Technique, AC induction motor is provided with and direct current generator under the support of control system
The governor control characteristics matching in excellence or beauty, AC induction motor also has, efficiency high, permanent work(wide ranges bigger than direct current generator small volume, power, maintenance
The advantages of measure little, therefore countries in the world are all in the utilization promoting alternating current asynchronous traction electric machine.Domestic narrow gauge electric locomotive leads at present
Draw adopt DC Transmission, still there is no a narrow gauge alternating current asynchronous traction electric machine, and the narrow gauge that is applied to multithread operating mode be asynchronous leads
Draw motor and more belong to the brand-new field of technology.
Therefore, how to provide a kind of narrow gauge asynchronous traction motor being applied to multithread operating mode, be people in the art
Member's technical issues that need to address at present.
Content of the invention
In view of this, the present invention provides a kind of multithread narrow gauge asynchronous traction motor it is adaptable to narrow gauge railway, and is suitable for
Exchange double-current power supply system in 3kV direct current with 25kV.
In order to solve the above problems, the invention provides a kind of multithread narrow gauge asynchronous traction motor is it is adaptable to narrow gauge
Railway, it is adaptable to 3kV direct current exchanges double-current power supply system with 25kV, including stator, rotor, end cap, bearing, rosette, tests the speed
Device, described stator includes stator core and stator winding, and 200 integrated class B insulation structures of described stator winding simultaneously adopt
Solvent-free organic silicon impregnating varnish cooperation vacuum pressure impregnation technique makes, and described end cap is provided with wire hole, and three-phase lead-out wire passes through
Described wire hole accesses described rosette, and embedding in described rosette has electric insulation silica gel, and described stator core two ends are provided with
Step, stator pressing ring is provided with the trim ring seam with the cooperation of described step.
Preferably, in above-mentioned multithread narrow gauge asynchronous traction motor, motor holding shaft is cast with described stator pressing ring one
Cause type, described motor holding shaft both sides are provided with reinforcement.
Preferably, in above-mentioned multithread narrow gauge asynchronous traction motor, also include the interior axis of cone being arranged at machine shaft,
Described machine shaft is connected with gear-box by the described interior axis of cone.
Preferably, in above-mentioned multithread narrow gauge asynchronous traction motor, described bearing is insulation bearing and adopts lubrication
Grease lubrication, bearing grease sealing adopts labyrinth seal structure.
Preferably, in above-mentioned multithread narrow gauge asynchronous traction motor, gear-box and bearing cap, described gear are also included
The junction of case and described bearing cap is provided with multiple drainback passages, and described drainback passage is provided with introversion baffle plate.
Preferably, in above-mentioned multithread narrow gauge asynchronous traction motor, also include being arranged at traction electric machine air inlet
Traction blower fan.
Preferably, in above-mentioned multithread narrow gauge asynchronous traction motor, the stator punching of described stator is provided with air vent,
The rotor punching of described rotor and rotor pressing ring are equipped with air vent.
Preferably, in above-mentioned multithread narrow gauge asynchronous traction motor, described end cap is communicated with the gas inside and outside motor
Pressure counter balance pocket.
Preferably, in above-mentioned multithread narrow gauge asynchronous traction motor, described rotor includes rotor core, sliver and end
Ring, described sliver end is elbow structure.
Preferably, in above-mentioned multithread narrow gauge asynchronous traction motor, electric machine stand is provided with for leading with bogie
Draw the anti-fall safe support that the anti-fall safety rope of bar is connected.
A kind of multithread narrow gauge asynchronous traction motor that the present invention provides is it is adaptable to narrow gauge railway is it is adaptable to 3kV direct current
Exchange double-current power supply system with 25kV, including stator, rotor, end cap, bearing, rosette, speed measuring device, stator includes stator ferrum
Core and stator winding, 200 integrated class B insulation structures of stator winding simultaneously coordinate vacuum using solvent-free organic silicon impregnating varnish
Pressure immersion varnish technique makes, and end cap is provided with wire hole, and three-phase lead-out wire passes through wire hole thereto, and embedding in rosette has
Electric insulation silica gel, stator core two ends are provided with step, and stator pressing ring is provided with the trim ring seam with step cooperation.
Because the structure of the stator winding in this programme and processing technique can realize depletion of QI gap insulation, improve insulation and lead
Hot, reduce motor temperature rise, improve mechanical strength and the globality of motor insulation structure, improve the insulation system life-span and
Reliability, meanwhile, electric insulation silica gel improves electrical insulation properties in rosette, compensate for the inadequate defect of electrical distance,
Therefore, in 3kV direct current, 25kV exchange 50Hz double-current system supply line, the insulating properties of motor make current transformer can be operated in
Under the operating mode of non-standing high pressure of 3900V～4500V.The embedded fit structure of stator core and stator pressing ring makes stator
The size of support goes for narrow gage locomotive.Therefore, the traction motor that the present invention provides goes for narrow gauge railway, and
It is applied to 3kV direct current and exchange double-current power supply system with 25kV.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the traction electric machine anti-fall safe support structural representation in specific embodiment of the invention scheme；
Fig. 2 is the stator winding wye connection structural representation in specific embodiment of the invention scheme；
Fig. 3 is the inner cone axle construction schematic diagram in specific embodiment of the invention scheme；
Fig. 4 is the ventilating system interface structure schematic diagram in specific embodiment of the invention scheme；
Fig. 5 is the traction electric machine oil-leak-prevention sealing structure schematic diagram in specific embodiment of the invention scheme；
Fig. 6 is the traction electric machine bearing lubrication sealed structural representation in specific embodiment of the invention scheme；
Fig. 7 is the rotor bar elbow structure schematic diagram in specific embodiment of the invention scheme；
Fig. 8 is the end cover structure schematic diagram in specific embodiment of the invention scheme；
Fig. 9 is the junction box structure schematic diagram in specific embodiment of the invention scheme；
Figure 10 is the motor holding shaft structural representation in specific embodiment of the invention scheme；
Figure 11 is the outlet method structural representation of the traction electric machine three-phase lead-out wire in specific embodiment of the invention scheme；
Figure 12 laminates fixed form structural representation for the traction electric machine stator core in specific embodiment of the invention scheme
Figure；
Figure 13 is the air pressure balance cavity configuration schematic diagram in specific embodiment of the invention scheme；
In Fig. 1 to Figure 13：
Anti-fall safe support -1, stator winding -2, the interior axis of cone -3, motor air inlet -4, oil baffle -5, rubber block -6, introversion
Baffle plate -7, labyrinth seal structure -8, sliver -9, elbow structure -10, rotor core -11, rotor slot -12, end cap -13, outlet
Hole -14, rosette -15, T-type structure -16, hanging -17, reinforcement -18, stator pressing ring -19, three-phase lead-out wire -20, stator ferrum
Core -21, step -22, bearing lubrication sealing system -23, air pressure balance chamber -24.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
In a kind of specific embodiment scheme, the invention provides a kind of multithread narrow gauge asynchronous traction motor, it is suitable for
In narrow gauge railway, and it is applied to 3kV direct current and exchanges double-current power supply system with 25kV.
Refer to Fig. 1 to Figure 13, this multithread narrow gauge asynchronous traction motor include stator, rotor, end cap 13, bearing,
The parts such as speed measuring device.The effect of stator is to produce rotating excitation field and support whole motor from machinery, its main parts size
There are stator core 21, stator winding 2, stator punching etc..Rotor is used to produce induced potential and electromagnetic torque to realize energy
The critical piece of conversion, it is made up of rotor core 11, rotor punching, rotor pressing ring, sliver 9, end ring and rotating shaft etc..End cap 13
For supporting rotor.Bearing be the rotor connecting static stator and rotation part so that during rotor rotation not with stator phase
Wipe, realize motor stator and rotor stability, the flexible mechanical connection of rotation.Speed measuring device is used for measurement motor rotor speed,
Tach signal is sent to control system, is the important step realizing asynchronous traction motor rotational speed regulation.
It should be noted that in 3kV direct current, 25kV exchange 50Hz double-current system supply line, narrow gage locomotive current transformer work
Making maximum intermediate dc continuous voltage is 3900V.However, when locomotive is powered using direct current net, direct current net voltage be 1800V～
4500V, the maximum middle dc voltage of current transformer work occurs the non-standing high pressure of 3900V～4500V, and therefore double-current system is narrow
The insulating Design of gage locomotive asynchronous traction motor need to be designed according to nominal insulation voltage grade 3900V, consider simultaneously
4500V non-continuous voltage influence, on the basis of 200 grades of corona-resistant insulation technology of power asynchronous traction motor of high, it is right to strengthen
Motor turn-to-turn insulation, straight line insulation etc. bear the insulation protection that overvoltage destroys unrepairable position, for exposed metal
Part, electric clearance designs according to 4500V electric pressure.
In order that the insulating properties of motor make current transformer can be operated in the work of the non-standing high pressure of 3900V～4500V
Under condition, this programme is mainly improved from the following aspects.
The improvement of the insulating properties with regard to stator winding 2 for this programme is as follows, and stator winding 2 is using integrated 200 grades absolutely
Edge structure, and made using solvent-free organic silicon impregnating varnish cooperation VPI (i.e. vacuum pressure impregnation technique), form air-gap-free exhausted
Edge, improves insulating heat-conductive, reduces motor temperature rise, improves mechanical strength and the globality of motor insulation structure, lifting
Insulation system life and reliability.Wherein, employ vacuum pressure impregnation technique during stator winding 2 dipping lacquer, that is, fixed
Sub- winding 2 is put into dipping lacquer furnace rear and is closed dipping lacquer stove, is completely drawn out carrying out dipping lacquer by dipping lacquer stove air before dipping lacquer again.This technique can
So that dipping lacquer process is carried out in vacuum environment, in the complete stator winding of dipping lacquer 2 insullac, there is not bubble, thus forming depletion of QI
Gap insulation, greatly improves the insulating properties of motor.
Specifically, the motor of the present invention adopts 6 grades of three phase electric machines, and winding adopts wye connection, and using 3 tunnels and connects
Structure.The stator winding 2 of the present invention is two-layered, formed winding, and the stator coil of molding imbeds in stator slot, and stator winding 2 is held with hard
Hoop is fixed, and coil bracket is fixed on stator pressing ring 19.Stator core 21 is overrided to form by 0.5mm cold-reduced silicon sheet,
With gusset, the stator pressing ring 19 at stator punching, two ends is welded into a whole, stator punching has air vent.
The present invention adopts Defend salt fog measure to motor surface structure, makes that motor is high temperature resistant, Defend salt fog.Specifically, Defend salt fog
Measure refers to Defend salt fog paint scheme motor appearance being adopted face new, driving end end cap, non-transmision end end cap, non-transmision end axle
Take up and join bolt surface treatment and be changed to the dacroment process, temperature and speed probe increase salt-fog resistant test.
The improvement of the insulating properties with regard to rosette 15 for this programme is as follows, and this rosette 15 is using being applied to voltage levels
Embedding rosette, specifically, this rosette 15 adopts cast structure, and embedding in rosette 15 has electric insulation silica gel.Due to
Electric insulation silica gel is good compared with air insulation performance, so, processed using embedding and can improve electrical insulation properties in rosette 15,
Make up the not enough defect of electrical distance, enable rosette 15 to meet electric insulation reliability, meanwhile, rosette 15 during motor operation
Heating, this casting glue longtime running also can guarantee that stable insulation at such a temperature.
In the arrangement of narrow gage locomotive traction electric machine out frame, due to the restriction of axial space, stator core 21
Often occupy the portion size of two ends trim ring so that the even whole out frame of stator pressing ring 19 is difficult to be arranged on locomotive.
In order that this motor goes for narrow gage locomotive, this programme laminates fixation using a kind of narrow gauge traction electric machine stator core 21
Mode, is provided with step 22 at stator core 21 two ends, and stator pressing ring 19 is provided with the trim ring seam with step 22 cooperation, and this structure can
To reduce the size of out frame, such that it is able to make this motor be applied to narrow gage locomotive.Specifically, in motor two ends stator pressing ring
The trim ring seam by core side setting and step 22 major diameter fit of core stamping on 19, the nominal chi of this trim ring seam diameter
Very little step 22 external diameter with punching is identical, and matching relationship between the two is ensured by tolerance zone.The depth root of this trim ring seam
Distribution according to motor axial space to determine.Now stator core 21 can be divided into intrusion stator pressing ring 19 part to be exposed on the external with naked
Point, the part invading two ends stator pressing ring 19 is passed through to laminate the lamination of certain altitude in advance, invades the part of stator pressing ring 19
Punching cylindrical on be provided with uniform shallower U-type groove several, the piece number of this punching is related to trim ring mouth depth, exposed
Outer punching quantity is determined further according to iron core total length.By tig weldering, this part lamination is fixed as one at U-type groove
Overall, then by two ends stator pressing ring 19, the lamination of two large divisions is fixedly clamped, it is finally reached not affect out frame whole
While body mechanical strength and rigidity it is ensured that in the case that gusset area coverage is little iron core laminated to have good fixation fixed
Heart effect it is ensured that out frame solid and reliable.
Traditional outlet method outputs string holes 14 using on motor trim ring, thus three-phase lead-out wire 20 is connected to rosette
In 15.Because the arrangement space of narrow gage locomotive is extremely limited, for the ease of arranging lead-out wire, this motor is using the end cap in motor
13 new structures outputing string holes 14, three-phase lead-out wire 20 passes through this wire hole 14 thereto 15, this end cap 13 embodiment party
Formula simply it is easy to through engineering approaches, can preferably meet the design requirement of heavily loaded narrow gage locomotive end cap at present.The three-phase lead-out wire 20 of motor
Enter back into rosette 15 from end cap 13 outlet, it is to avoid reduction trim ring mechanical strength, be easy to seal.
It should be noted that this programme is in order that motor holding shaft is applied to the arrangement space of narrow gage locomotive, and also to
Improve the intensity of motor holding shaft it is preferable that motor holding shaft and stator pressing ring 19 integrally casting shaping, motor holding shaft both sides are provided with and add
Strong muscle 18.Specifically, the load-carrying members such as this motor holding shaft and hanging 17 adopt one piece casting structure, and each seizes fixed cell
It is fixed on stator pressing ring 19 using T-type structure 16, both sides add casting reinforcement 18 guarantees rigidity.Due to hanging hole bulk limit
Fixed, a leg of hanging 17 is integrally cast on stator pressing ring 19, it is complete that another leg welds formation on reinforcement 18
Hanging structure, final motor holding shaft structure realizes integrated casting, and take into full account parts casting manufacturability, plus
Work manufacturability and access for welding.This motor holding shaft structural stability is good, intensity is high.
It should be noted that this programme adopts internal bevel gear to be driven, specifically, also include being arranged at the inner cone of machine shaft
Axle 3, machine shaft is connected with gear-box by the interior axis of cone 3, and gear ratio is big, and (motor can reach 103/ with gear-box angular velocity ratio
17).Internal bevel gear transmission is that little gear is pressed in the interior axis of cone 3 on machine shaft, and both are connected by interference fit, when
Drive little gear during axis of rotation, drive gear-box to rotate output torque again by little gear.
The present invention is also easy to produce at the partial structurtes of stress concentration by the internal axis of cone 3 and all increased escape, decreases office
Portion's stress concentration；It is connected with the interior axis of cone 3 by optimizing little gear, growth little gear is combined length with the interior axis of cone 3 conical surface and subtracts simultaneously
When young gear, in the intrusion of the interior axis of cone 3, reduces erection stress while ensureing connection reliability.
It should be noted that galvano-cautery electric current has two kinds of paths in motor.The first path is that rotating shaft is non-drive
End bearing stator is driven end bearing, second be electric current in stator after bearings at both ends through rotating shaft and gear stream
To at locomotive ground connection.For the first situation, motor can separate the path of corrosion current using one end insulation bearing, thus anti-
Only bearing galvano-cautery.Because non-transmision end bearing is less, make the advantage of lower cost of insulation bearing, so general non-transmision end
Bearing adopts insulation bearing.The structure of one end bearing insulation is only adapted to the motor that the relatively low GTO current transformer of switching frequency is powered
And low-power machine, for by higher the powering heavy-duty motor using the element current transformer such as IGBT of switching frequency, also having the
Two kinds of paths and corrosion current is bigger.Preferably, traction electric machine bearings at both ends of the present invention is all using insulation bearing, to prevent electricity
Corrosion damage bearing.
All using grease lubrication, bearings at both ends is equipped with grease supplementary device to bearings at both ends in this programme, convenient
Supplemental lubrication fat.Bearing grease sealing adopts non-contacting labyrinth seal structure 8, that is, in the labyrinth of bearing cap, inner oil seal etc.
Leave space in assembling structure and fill full grease and sealed.Motor of the present invention is provided with bearing profit near oiling oil nozzle
Sliding direction board, direction board is labelled with types of fats, volume read-out and filling cycle.
It should be noted that the lubricating system in this programme employs new NU330 large scale bearing high rotating speed fat profit
Sliding system, solves large scale bearing high-speed cruising under the conditions of grease lubrication.This motor is because the requirement of the speed of service is it is desirable to electricity
Machine rotating speed need to reach 2820rpm；Simultaneously because inner cone axle construction is to the restriction of size and other use requirements of bearing, bearing designation
From NU330.NU330 bearing can reach 2820rpm under the conditions of grease lubrication in theory, but highest in practical engineering application
Only achieve 2663rpm, and a key factor limiting practical engineering application maximum speed is that bearing temperature rise is easily too high.This electricity
In machine adopt bearings at both ends all use grease lubrication, and by calculate with assay optimization bearing lubrication system in grease-filled amount thus
Reduce bearing temperature rise, and then motor practical engineering application maximum speed has been brought up to 2820rpm.
It should be noted that the motor in this programme also includes gear-box and bearing cap, the combination of gear-box and bearing cap
Place is provided with multiple drainback passages, and drainback passage is provided with introversion baffle plate 7.Multiple drainback passages enable gear case oil from tooth
Roller box passes through gear-box and the oil return of bearing cap junction in gear-box it is ensured that in gear case oil relatively through different passages after flowing out
Also can oil return in time in the case of many.When introversion baffle plate 7 can prevent drive system reversion, gear case oil pours in down a chimney and leads to oil return not
Freely.
It can be seen that, traction electric machine driving end adopts the sealing structure of oil-leakage-prevention with gear-box fitted seal structure, and this sealing is tied
Structure implements branch oil return, offsets the adverse effect that gear-box malleation is brought, makes oil return more unobstructed.In addition, gear-box and bearing cap
Junction be additionally provided with oil baffle 5 and rubber block 6, oil baffle 5 (can increase length 19mm) can separate radial seal and axial direction
Sealing oil return line, oil return respectively.Rubber block 6 can avoid traction electric machine and gear-box faying face fluid sealant to smear excessively, sealing
Glue is set in oil circuit and leads to oil return hole plug.
In order to be effectively reduced the temperature rise of motor, the present invention adopts forced ventilation to cool down.Specifically, traction electric machine air inlet
It is provided with traction blower fan at 4.Forced ventilation cooling is compeled to be passed through cold wind to traction electric machine air inlet semi-finals by drawing blower fan, from
Motor air outlet flows out, thus reducing the cooling means of motor temperature rise.Cooling air enters from non-transmision end trim ring top air inlet
Enter motor, be then divided into three tunnels；Gap between stator core 21 and rotor core 11 for one tunnel, to driving end；One road warp
Cross non-transmision end end turn gap and enter stator core 21 ventilating duct, by driving end end turn gap, import driving end,
Another road, through rotor core 11 ventilating duct, imports driving end；Last three tunnels are discharged by the air outlet of driving end end cap after collecting.
This programme, in the case of the permission of motor primary structure intensity, optimizes rotor aeration structure, increases rotor
Upper air vent aperture, rotor air vent pore size by carrying out simulation calculation and ventilating system combination to ventilation system of motor
Determine after test.Motor ventilation air channel volume accordingly increases, and (traction electric machine air intake vent is quiet for minimizing ventilation windage and air inlet blast
Blast is less than 1400Pa), reduce power of fan, thus reducing ventilation noise and auxiliary capacity.
In order to reduce the temperature rise of motor stator and rotor further it is preferable that the stator punching of stator is provided with air vent, turn
The rotor punching of son and rotor pressing ring are equipped with air vent.Air vent on stator punching, rotor punching and rotor pressing ring is used for
Increase the draught area of stator and rotor, thus reducing the temperature rise of stator and rotor.
Motor exist in rotating malleation (air is by motor internal outwardly) because motor forced ventilation brings and by
Produce the negative pressure (air is flowed from external environment condition to motor internal) that absorption affinity is brought, no matter malleation in rotor high-speed rotation
Bearing lubrication sealing effectiveness all can be affected with negative pressure.It is communicated with the air pressure balance chamber inside and outside motor in end cap 13 in the present invention
24, set up motor internal and external pressure balance channel, make bearing lubrication sealing system 23 two ends no draught head it is ensured that lubrication is close
Envelope effect.
Rotor core 11 of the present invention is overrided to form by 0.5mm cold-reduced silicon sheet, and two ends rotor pressing ring compresses.Sliver 9 is inserted
After entering in rotor slot 12, tightly sliver 9 is fixed in rotor slot 12 by punching, between rotor bar and end ring, adopts Medium frequency induction
Solder brazing integral solder.This rotor is cage rotor structure, and rotor tip adopts special high resisting deflection elbow structure, i.e. sliver 9
End is elbow structure 10, so that sliver 9 has high resisting deflection, can effectively prevent sliver 9 to be centrifuged in high-speed rotation
Power and the damage that deforms.Rotor tip band retaining ring, can improve end ring intensity.Rotor bar adopts oxygen-free copper sliver, and motor turns
Axle is using the high duty alloy Steel material of forging..Machine shaft carries out ultrasonic examination and magnetic powder inspection, answers flawless, fracture, folding
Repeatedly, the defect such as shrinkage.
It should be noted that the electric machine stand of this programme is provided with being connected for safety rope anti-fall with bogie draw bar
Anti-fall safe support 1.Specifically, the present invention is arranged on bogie using rolling axle-hung suspension, and support is provided with anti-fall safety
Support 1, safety rope anti-fall with bogie draw bar can be connected, prevents motor from coming off, improve the safety of motor operation.
In addition, the dynamic balance grade of this motor is not less than 2.5 grades of IS01940 regulation.This motor cable adopts 3.6/
6.0kV anti-flammability Halogen cross-linked polyolefin has sheath 150mm2Cable.Cable meets fire protecting performance and requires.Cable possesses fire-retardant
Property, flexibility are it is adaptable to the connection of the electricity piece of vehicle.
The speed measuring device of this motor is the double-channel Hall velocity sensor being contained in motor non-transmision end, is surveyed using noncontact
Amount mode.It exports the rate signal of 90 ° of two-way phase contrast, and this two signals are used for measurement motor rotating speed.Speed probe master
Want technical parameter as shown in table 1：
Table 1
| Running voltage UB | 12VDC～16VDC |
| Output high level | ≥(UB–3)V |
| Output low level | ≤1.5V |
| Minimum frequency value | ＜ 0.2Hz |
| Maximum frequency values | ≥20kHz |
| Phase contrast | 90°±45° |
| Dutycycle | 0.5±0.25 |
| Modulus | 2 |
| Every turn umber of pulse | 192 |
Motor side lower part of the present invention is mounted with nameplate, is easy to observe after entrucking.Nameplate denotes motor model, quota side
Formula, rated power, rated voltage, rated current, rated frequency, rated speed, maximum speed, connection, the class of insulation, weight,
Dispatch from the factory the contents such as sequence number, the date of production.Nameplate and mark are printed and/or countermark technology using advanced, clearly, are difficult to wear away,
During use, interior energy is correctly recognized.It is also provided with earth stud on motor of the present invention, and be provided with ground connection mark in its vicinity.
Because the structure of the stator winding 2 in this programme and processing technique can realize depletion of QI gap insulation, improve insulation
Heat conductivity, reduces motor temperature rise, improves mechanical strength and the globality of motor insulation structure, improves the insulation system life-span
And reliability, meanwhile, electric insulation silica gel improves electrical insulation properties in rosette 15, compensate for inadequate the lacking of electrical distance
Fall into, therefore, in 3kV direct current, 25kV exchange 50Hz double-current system supply line, the insulating properties of motor make current transformer can work
Under the operating mode of the non-standing high pressure of 3900V～4500V.The embedded fit structure of stator core 21 and stator pressing ring 19 makes
The size obtaining out frame goes for narrow gage locomotive.Therefore, the traction motor that the present invention provides goes for narrow gauge
Railway, and be applied to 3kV direct current and exchange double-current power supply system with 25kV.
The present invention program has the beneficial effect that：
(1) present invention adopts the phase asynchronous traction electric machine of squirrel-cage, is powered by vehicle-mounted IGBT converter, using Direct Torque
Control method controls it, and provides traction power for locomotive.Motor has that small volume, power is big, efficiency high, permanent work(scope
The advantages of width, maintenance are little.
(2) this motor can bear due to vibration produced during locomotive operation and impact, and fully examine in the design of the interior axis of cone 3
Consider the impact of short-circuit torque, the magnitude of interference of the interior axis of cone and little gear considers short-circuit torque in choosing, make the interior axis of cone 3 and little gear
Interference structure also can be reliably connected output torque such that it is able to bear short-circuit torque under short-circuit torque.Bearing is motor in machine
The weak part of car produced vibration and impact when running, when the present invention has taken into full account locomotive operation in the design of bearing
Vibration and impact, the vibration according to locomotive operation and impact condition carried out accurate calculating to all kinds bearing life, choosing
Take the vibration that can bear locomotive operation and impact and the bearing designation of service life can be met so that above-mentioned critical component is had
Resistance to vibration, and passed through motor oscillating impact test it is ensured that also can reliability service under vibratory impulse in whole motor.
(3) all traction electric machines of the present invention, have exchange at aspects such as its overall dimensions, installation dimension and electric properties
Property.The parts that all maintenance periods need to be changed, also have interchangeability including rotor, end cap 13, bearing etc..
(4) present invention employs integration and seize structure, high-strength composite welding structure, new 200 grades of organic silicon insulations
Multinomial new technique, the new constructions such as system, large scale bearing high rotating speed grease lubrication system, technical performance is advanced, and motor stabilizing is reliable.
(5) present invention is First narrow gauge electric locomotive asynchronous traction motor, can be used for 1067mm gauge.
(6) present invention is First multithread narrow gauge asynchronous traction motor, is adapted to 3kV direct current, 25kV exchange 50Hz
Double-current system powering mode.
(7) motor of the present invention is lightweight, torque is big, in the case of torque plays quite, weight reduction 25%～30%.
(8) this motor perseverance work(wide ranges, permanent work(speed ratio 2.5, meet locomotive low constant-speed operation requirement.
(9) this Rated motor insulation voltage is high, and nominal insulation voltage 3900V meets highest 4500V net pressure request, is mesh
Front domestic locomotive traction motor highest insulation voltage grade.
(10) present invention develops large scale bearing high rotating speed grease lubrication system, and motor maximum speed reaches 2820rpm, is
NU330 bearing domestic highest engineer applied at present, improves 50% than DC locomotive.
(11) present invention seizes structure using integration, lightweight, and reliability is high.
(12) anti-fall safe support 1 is devised on this electric machine stand, and devise safety ground bolt, rosette 15 designs
High-voltage safety is had to indicate, motor safety is reliable.
The present invention program provides a traction motor, for narrow gauge electric locomotive traction, provides traction dynamic for locomotive
Power.This motor is First multithread use for electric locomotive asynchronous traction motor, is also that the exchange of First narrow gauge passes simultaneously
Galvanic electricity power asynchronous traction motor for railway engine.The motor that the present invention provides is adapted to narrow gauge railway it is adaptable to 3kV direct current and 25kV
The double-current power supply system of exchange.
China developed direct current narrow gauge traction electric machine, was mainly used in DC Transmission locomotive, sending out with variable-frequency control technique
Exhibition, locomotive turns to AC Drive from DC Transmission, and oneself is a kind of inexorable trend, and therefore market continual exploitation one kind is adapted to exchange
The automobile-used multithread alternating current asynchronous narrow gauge traction electric machine of driver.Narrow gauge railway is widely distributed in the world, and these countries are to narrow
Being in great demand of gage locomotive, but because its Economic and technical efficiency is weak, there is no locomotive manufacturing ability, the source of locomotive is complete
By import.Product of the present invention cuts this market, preemption techniques commanding elevation in time, has preferable market prospect.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (9)
1. a kind of multithread narrow gauge asynchronous traction motor is it is adaptable to narrow gauge railway is it is adaptable to 3kV direct current exchanges double fluid with 25kV
Power supply system it is characterised in that include stator, rotor, end cap (13), bearing, rosette (15), speed measuring device, gear-box and
Bearing cap, described stator includes stator core (21) and stator winding (2), and described stator winding (2) integrated 200 grades is absolutely
Edge structure is simultaneously made using solvent-free organic silicon impregnating varnish cooperation vacuum pressure impregnation technique, and described end cap (13) is provided with wire hole
(14), three-phase lead-out wire (20) accesses described rosette (15) by described wire hole (14), the interior embedding of described rosette (15)
There is electric insulation silica gel, described stator core (21) two ends are provided with step (22), and stator pressing ring (19) is provided with and described step
(22) the trim ring seam coordinating, the junction of described gear-box and described bearing cap is provided with multiple drainback passages, and described
Drainback passage is provided with introversion baffle plate (7), and the junction of described gear-box and described bearing cap is additionally provided with oil baffle (5) and gear glue
Plate (6).
2. multithread narrow gauge asynchronous traction motor according to claim 1 is it is characterised in that motor holding shaft is fixed with described
Sub- trim ring (19) integrally casting shaping, described motor holding shaft both sides are provided with reinforcement (18).
3. multithread narrow gauge asynchronous traction motor according to claim 1 is it is characterised in that also include being arranged at motor
The interior axis of cone (3) of rotating shaft, described machine shaft is connected with gear-box by the described interior axis of cone (3).
4. multithread narrow gauge asynchronous traction motor according to claim 1 is it is characterised in that described bearing is shaft insulation
Hold and adopt grease lubrication, bearing grease sealing adopts labyrinth seal structure (8).
5. multithread narrow gauge asynchronous traction motor according to claim 1 is it is characterised in that also include being arranged at traction
The traction blower fan at motor air inlet (4) place.
6. multithread narrow gauge asynchronous traction motor according to claim 1 is it is characterised in that the stator of described stator rushes
Piece is provided with air vent, and the rotor punching of described rotor and rotor pressing ring are equipped with air vent.
7. multithread narrow gauge asynchronous traction motor according to claim 1 is it is characterised in that described end cap (13) is provided with
Air pressure balance chamber (24) inside and outside connection motor.
8. multithread narrow gauge asynchronous traction motor according to claim 1 is it is characterised in that described rotor includes rotor
Iron core (11), sliver (9) and end ring, described sliver (9) end is elbow structure (10).
9. multithread narrow gauge asynchronous traction motor according to claim 1 is it is characterised in that electric machine stand is provided with use
The anti-fall safe support (1) being connected in safety rope anti-fall with bogie draw bar.
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| CN201410809871.8A CN104467329B (en) | 2014-12-23 | 2014-12-23 | A kind of multithread narrow gauge asynchronous traction motor |
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| CN105811601B (en) * | 2016-03-22 | 2018-02-16 | 中车永济电机有限公司 | Motor stator trim ring |
| CN108696042A (en) * | 2018-08-01 | 2018-10-23 | 中车株洲电机有限公司 | A kind of motor and its traction electric machine terminal box |
| CN112172844B (en) * | 2019-07-02 | 2022-04-26 | 中车株洲电力机车研究所有限公司 | Traction motor and rail vehicle |
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| CN101121861B (en) * | 2007-08-01 | 2011-04-27 | 株洲时代新材料科技股份有限公司 | Low-viscosity solvent-free organic silicon insulation impregnating varnish and preparation method thereof |
| CN201390254Y (en) * | 2009-04-02 | 2010-01-27 | 南车株洲电力机车有限公司 | Anti-falling device of traction motor |
| CN202050316U (en) * | 2011-05-23 | 2011-11-23 | 南车株洲电机有限公司 | High-power traction motor bearing lubricating structure |
| CN202384938U (en) * | 2011-11-21 | 2012-08-15 | 南车成都机车车辆有限公司 | Bending clamp for AC traction motor rotor conducting bar |
| CN103441632B (en) * | 2013-09-11 | 2015-08-05 | 永济新时速电机电器有限责任公司 | Alternating-current transmission rapid passenger transportation use for electric locomotive power asynchronous traction motor of high |
| CN103855849B (en) * | 2014-03-26 | 2016-06-01 | 南车株洲电机有限公司 | A kind of traction electric machine terminal box and manufacture method thereof being applicable to voltage levels |
| CN203805910U (en) * | 2014-05-19 | 2014-09-03 | 南车株洲电机有限公司 | Novel narrow gage locomotive traction motor journal sticking structure and narrow gage locomotive traction motor |
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