CN113726037A - High-speed permanent magnet motor for hybrid power pack of rail car - Google Patents
High-speed permanent magnet motor for hybrid power pack of rail car Download PDFInfo
- Publication number
- CN113726037A CN113726037A CN202111006486.6A CN202111006486A CN113726037A CN 113726037 A CN113726037 A CN 113726037A CN 202111006486 A CN202111006486 A CN 202111006486A CN 113726037 A CN113726037 A CN 113726037A
- Authority
- CN
- China
- Prior art keywords
- oil
- stator
- bearing
- transmission end
- permanent magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- 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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
-
- 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
- H02K3/38—Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/44—Protection against moisture or chemical attack; Windings specially adapted for operation in liquid or gas
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/48—Fastening of windings on the stator or rotor structure in slots
- H02K3/487—Slot-closing devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
-
- 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
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
-
- 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
- H02K7/02—Additional mass for increasing inertia, e.g. flywheels
- H02K7/025—Additional mass for increasing inertia, e.g. flywheels for power storage
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a high-speed permanent magnet motor for a hybrid power pack of a rail car, which comprises a machine base positioned between a transmission end cover and a non-transmission end cover, wherein the inner wall of the machine base is connected with a stator structure, a rotor structure matched with the stator structure is arranged in the stator structure, the stator structure comprises a stator core, a stator winding, a stator pressing ring and stator arc keys, one end face of the stator core is provided with an outer rectangular tooth, the other end of the stator core is clamped with an inner core stop circle of the machine base, the outer rectangular tooth is embedded in the inner rectangular tooth of the stator pressing ring, a plurality of stator arc keys positioned in a circumferential key groove of the machine base are fixed on the stator pressing ring through jackscrews, the stator winding is embedded in the stator core, and two ends of the stator winding are respectively encapsulated by insulating epoxy resin; the high-speed permanent magnet motor can be applied to a rail locomotive power pack, and has the advantages of smaller volume, convenience in maintenance, better reliability, simple structure, higher insulation grade, long service life, high interchangeability and the like compared with the conventional high-speed permanent magnet motor.
Description
Technical Field
The invention relates to the field of motor structure design, in particular to a high-speed permanent magnet motor for a hybrid power pack of a rail car.
Background
The international power-dispersed motor train unit is widely applied to branch line and intercity passenger transportation, and countries such as Germany, England and Japan have thousands of reserves, and with the continuous improvement and enhancement of environmental protection regulations, the hybrid power is the mainstream mode of the future rail transit traction power. The country will focus on building urban (suburban) railways, and the hybrid electric multiple units are a reasonable solution. The power pack is integrated with a power driving system of the motor train unit, mainly depends on import at present, and has the problems of high product price, long supply period, untimely after-sale response and the like.
The hybrid power pack system for the rail transit equipment integrates key components such as a diesel engine, a hybrid box, a motor, a gearbox, a cooling heat exchange system and an electrical system, and can realize functions such as pure electric, pure internal combustion and hybrid driving modes, braking energy recovery and hydraulic braking. The permanent magnet motor structure suitable for rail transit equipment can meet the requirement of a high-reliability high-speed permanent magnet motor which operates more than 40 kilometres per year. However, practical application conditions show that the permanent magnet motor at the present stage has the following problems due to the limitations of a stator, a rotor structure, an end cover supporting structure, stator winding insulation and a bearing lubricating structure;
firstly, the end part of the coil of the existing permanent magnet motor is insulated mainly by adopting the modes of insulating paint, dipping paint and the like of an electromagnetic wire. In the insulation mode, under the conditions of small gap dielectric constant and alternating high voltage, the motor coil can generate uneven electric fields to cause partial discharge of an interface and the phenomena of ignition or breakdown among lines. The insulating material is aged and decomposed to cause insulation breakdown.
Secondly, the existing permanent magnet motor stator core positioning mode is flat key positioning, and because the flat key positioning needs key grooves machined on the inner surface of the base, water channel cavities exist on the inner wall of the base and other factors, the outer wall of the base is too thick and heavy, and the heat dissipation performance is poor.
Thirdly, the existing permanent magnet high-speed motor adopts a speed measuring device as a rotary transformer, is a small-sized alternating current motor for measuring angles, and is used for measuring the angular displacement and the angular velocity of a rotating shaft of a rotating object.
Fourthly, the bearings mainly adopted by the existing permanent magnet motor are single-side and double-side sealed bearings, the bearing lubrication mode is a grease lubrication mode, and due to the limitation of installation modes and operation spaces, many motors do not have the condition of oil filling ports, and only once filling of lubricating grease during delivery or maintenance results in poor bearing lubrication and short service life. In addition, the transmission end of the permanent magnet motor for the hybrid power pack of the rail car is directly connected with the transmission, so that the problems of poor structural tightness of the transmission end cover, easiness in mixing of bearing lubricating grease and gear oil, heavy bearing load, high temperature, large impact vibration and the like are caused. The motor maintenance time interval is short, the bearing design life is difficult to persist, the bearing resource is seriously wasted, and the service life of the motor is limited. Therefore, the bearing lubrication at the transmission end has important significance for the motor, and the good lubrication mode can play roles in reducing the friction resistance, temperature, contact stress, impact vibration and corrosion resistance of the bearing.
In conclusion, the conventional permanent magnet motor has the problems of complex structure, large volume, easy breakdown and aging of a coil, easy damage of a bearing, limited application range of the motor, poor running reliability, large volume, high temperature rise, short service life and the like.
Disclosure of Invention
In order to prolong the service life of the motor, ensure the motor to run reliably, reduce the volume and simplify the rotation regulation, the high-speed permanent magnet motor for the new rail transit equipment is provided according to the hybrid power driving mechanism, has high reliability, reduces the cooling of the motor, improves the temperature rise of the motor and meets the requirements of the use environment.
In order to achieve the purpose, the technical scheme of the application is as follows: the utility model provides a railcar hybrid is high-speed permanent-magnet machine for package, is including being located the stator between transmission end cover and the non-transmission end cover, the frame inner wall is connected with stator structure, and this stator structure is inside to be equipped with rather than complex rotor structure, stator structure includes stator core, stator winding, stator clamping ring, stator arc key, the processing of stator core one end terminal surface has outer rectangle tooth, and the other end keeps off interior round joint with the iron core of frame, outer rectangle tooth inlays in the interior rectangle tooth of stator clamping ring, and a plurality of stator arc keys that are located frame circumference keyway pass through the jackscrew to be fixed on the stator clamping ring, the embedding has stator winding on the stator core, the stator winding both ends are respectively with insulating epoxy embedment.
Furthermore, the two ends of the stator winding are respectively encapsulated by insulating epoxy resin, and the method specifically comprises the following steps:
1) respectively injecting the epoxy resin insulating material and the curing agent into the two storage tanks according to the proportion;
2) the air in the epoxy resin insulating material is completely removed in vacuum by adopting a film circulating defoaming mode, and the two-component epoxy resin insulating material is effectively preheated and insulated;
3) heating and insulating a mixing tank on epoxy resin vacuum pouring equipment, and then putting raw materials in two storage tanks into the mixing tank;
4) starting the automatic stirring function of the material mixing tank, and stirring for 30 minutes to uniformly mix the epoxy resin insulating material and the curing agent together;
5) in the stirring process, putting the stator structure into a vacuum pressure tank on epoxy resin vacuum casting equipment, heating and insulating a tank body of the vacuum pressure tank, and vacuumizing the vacuum pressure tank to a specified pressure;
6) starting a valve to uniformly pour the raw materials uniformly stirred in the mixing tank onto the stator structure through a pipeline, and observing through a small window while pouring;
7) and after the pouring is finished, closing the valve, canceling the heat preservation of the vacuum pressure tank, naturally cooling the stator structure in the vacuum pressure tank, opening the door of the vacuum pressure tank when the stator structure is cooled to 30-40 ℃, and finishing the pouring process.
Further, the rotor structure includes pivot, rotor punching, preceding rotor end plate, back rotor end plate, thrust washer, round nut, magnet steel, the magnet steel is installed in rotor punching inslot, the rotor punching is folded and is pressed the dress in the pivot and place preceding rotor end plate, back rotor end plate in both ends, the pivot rear end has cup jointed round nut and has been used for compressing tightly be equipped with the thrust washer between round nut and the back rotor end plate.
Furthermore, the rear end of the rotating shaft is connected with an inner ring of a rotary transformer, an outer ring of the rotary transformer is arranged on a non-transmission end cover through a pressing plate, a rotary transformer protective cover is arranged outside the rotary transformer and fixed in a fixing groove of the non-transmission end cover, and a lead-out wire of the rotary transformer penetrates through the non-transmission end cover and is connected to a control connector outside the base;
the rotary transformer is characterized in that a semicircular key groove is formed in the periphery of the outer ring of the rotary transformer, a semi-waist-shaped key groove is formed in the end cover of the non-transmission end, the semicircular key groove and the semi-waist-shaped key groove are arranged oppositely, the semicircular key groove is connected with the bottom of a round key, the top of the round key is connected with a strip-shaped groove of a connecting rod in a sliding mode, and the rotary connecting rod drives the rotary transformer to rotate axially.
Furthermore, the pressing plate is fixed on the non-transmission end cover through a pressing plate bolt, the connecting rod is fixed on the non-transmission end cover through a connecting rod bolt, and when the rotary transformer is adjusted, the connecting rod bolt and the pressing plate bolt need to be loosened, and the connecting rod is rotated to further drive the outer ring of the rotary transformer to rotate.
Furthermore, the front end of the rotating shaft is connected with a transmission end cover through a front bearing, the transmission end cover is clamped with a front bearing outer ring through a transmission end bearing inner cover, the transmission end bearing inner cover and a front rotor end plate form labyrinth seal, the transmission end bearing inner cover is provided with an internal oil seal, and an internal oil seal oil lip is in contact seal with the cylindrical surface of the rotating shaft; the rotary shaft is clamped with the inner ring of the front bearing by an oil retainer ring and a wear-resistant sleeve, an oil seal groove is arranged outside the transmission end cover and is clamped with an external oil seal, an external oil seal lip is in contact sealing with the wear-resistant sleeve, a magnetic oil filter is arranged at an oil inlet of the transmission end cover, an observation mirror is arranged at the bottom of an oil chamber of the transmission end cover, the observation mirror consists of an organic glass cover plate, a metal cover plate and an O-shaped sealing ring, and an observation window is formed in the metal cover plate; the transmission end cover is connected with the speed changer to form a closed gear transmission device.
Furthermore, the front bearing lubrication mode is oil lubrication, gear oil is filled in the transmission, the liquid level of the gear oil is higher than the oil inlet of the transmission end cover, so the gear oil reaches the bearing chamber through the oil filter, when the gear oil reaches a certain height in the bearing chamber, the front bearing is immersed in the gear oil, and the bearing is completely lubricated when rotating; the flywheel blade is processed on the rotating shaft, the rotating shaft and the oil retainer form the flywheel, when the motor runs, the flywheel rotates rapidly, gear oil is conveyed to the position of the inner cover oil storage groove under the action of centrifugal force, the position of the oil outlet of the oil storage groove is the same as that of the end cover of the transmission end, and the gear oil is discharged into the transmission again through the position of the oil outlet.
Furthermore, a seal labyrinth is formed by the transmission end bearing inner cover and the front rotor end plate, when gear oil leaks, the leaked gear oil reaches the seal labyrinth and then reaches the oil chamber through the oil discharge channel, the oil chamber is provided with an oil discharge port, when a worker observes the oil chamber through an observation mirror and finds that the gear oil exists, a ventilation valve below the machine base is opened in time, whether the inside of the motor also has the condition of oil inlet is judged, and if the condition exists, the motor is shut down and maintained in time.
Furthermore, the rear end of the rotating shaft is connected with the non-transmission end cover through a single-face sealing bearing, one side of the single-face sealing bearing, which is adjacent to the rotary transformer, is provided with a seal, the other side of the single-face sealing bearing is provided with a bearing oil retainer ring with a labyrinth seal, the bearing oil retainer ring is clamped with the non-transmission end cover, the non-transmission end cover is provided with an oil injection channel and an oil injection cup, and the rotary transformer and the single-face sealing bearing are arranged in the same cavity of the non-transmission end cover.
Furthermore, a water channel cavity is arranged on the machine base, the upper part of the water channel cavity is provided with a water inlet, the lower part of the water channel cavity is provided with a water outlet, and the water channel cavity is of a snake-shaped structure
Further, the stator core comprises stator punching sheets, and the stator punching sheets are welded with a front stator end plate and a rear stator end plate at two ends after being laminated; the stator winding is connected with a power line, and the power line penetrates out of the machine base through a waterproof connector.
Due to the adoption of the technical scheme, the invention can obtain the following technical effects: the high-speed permanent magnet motor can be applied to a rail locomotive power pack, and has the advantages of smaller volume, convenience in maintenance, better reliability, simple structure, higher insulation grade, long service life, high interchangeability and the like compared with the conventional high-speed permanent magnet motor. The high-speed permanent magnet motor has the reliability of at least over 40 kilometers of annual operation, can improve the compactness of the hybrid power pack of the rail car, can be applied to the types of the hybrid power packs of the rail cars of more levels, improves the transportation efficiency and reduces the cost. The method is beneficial to promoting the development of rail transit transportation in China so as to meet the requirements of rail transit users, is beneficial to accelerating the development of rail transport vehicles, and has positive significance for promoting the rail transit transportation efficiency.
The stator iron core is integrally pressed and welded, the stator pressing ring is provided with inner rectangular teeth, the stator iron core is provided with outer rectangular teeth, and the inner circle of the machine base is provided with a part of circumferential key grooves for limiting stator arc keys. The existing engine base stator core flat key groove is cancelled, and the purposes of saving the engine base space, reducing the wall thickness of the engine base, increasing the sectional area of a water channel and the flow of the water channel, reducing the temperature rise of the stator and increasing the strength of the engine base are achieved.
The end part of the stator winding adopts a VPI vacuum pressure dip coating and epoxy resin vacuum encapsulation double insulation process, the encapsulation material is completely soaked in turn-to-turn insulation, no gap is left between turns of the coil, and the excellent corona resistance, heat conduction performance, waterproof performance and high mechanical strength of the epoxy resin are utilized to finally achieve the aims of excellent corona resistance, waterproof performance, insulation performance, heat conduction performance, low temperature rise of the stator winding, high mechanical strength, moisture resistance, pollution prevention and corrosion resistance of the stator winding.
The rotary transformer adopts the round key location, connects rotary transformer, round key, non-drive end cover with the connecting rod, and the connecting rod can play the effect of regulation, axial positioning, radial positioning circulator, finally can reach chooses for use more little volume rotary transformer, location structure is simple, rotary transformer initial adjustment convenient operation, occupy the little purpose in end cover space.
The front bearing at the transmission end adopts an oil lubrication mode, and the front bearing is lubricated by transmission gear oil. The end cover of the transmission end is provided with an observation mirror for monitoring the internal sealing condition of the front bearing at any time. The rotating shaft and the inner baffle ring form a flywheel which provides power for bearing lubricating oil and ensures that the transmission gear oil can circularly lubricate the bearing.
Drawings
FIG. 1 is a cross-sectional view of a high-speed permanent magnet motor for a railcar hybrid power pack;
FIG. 2 is a schematic view of the direction A and the direction B without the rotating protective cover;
FIG. 3 is a longitudinal sectional view and a transverse sectional view of a stator structure;
FIG. 4 is a schematic view of a stator core structure having stator windings;
FIG. 5 is a schematic view of a stator clamping ring structure;
FIG. 6 is a cross-sectional view and a side view of the connecting rod;
FIG. 7 is a view of the drive end bearing lubrication configuration;
FIG. 8 is an exploded view of a partial structure of the drive end;
fig. 9 is a simplified diagram of a magnetic oil filter.
The sequence numbers in the figures illustrate: 1 engine base, 2 stator iron core, 3 stator winding, 4 insulation epoxy resin, 5 stator arc key, 6 jackscrew, 7 stator pressing ring, 8 water outlet, 9 rotor key, 10 rotating shaft, 11 thrust washer, 12 rear rotor end plate, 13 power line, 14 non-driving end cover, 15 rotary transformer outer ring, 16 rotary transformer inner ring, 17 rotary protective cover, 18 driving end cover, 19 driving end bearing inner cover, 20 front bearing, 21 external oil seal, 22 wear-resisting sleeve, 23 front rotor end plate, 24 magnetic steel, 25 waterproof joint, 26 connecting rod, 27 round key, 28 rotor punching sheet, 29 water inlet, 30 pressing plate, 31 pressing plate bolt, 32 shaft retainer ring, 33 observation mirror, 34 internal oil seal, 35 oil retainer ring, 36 magnetic, 37 grounding bolt, 38 control connector, 39 round nut, 40 ventilation valve, 41 front stator end plate, 42 slot wedge, 43 water channel cavity, 44 rear stator end plate, 45 machine base circumferential key groove, 46 outer rectangular tooth, 47 inner rectangular tooth, 48 bearing oil retainer ring, 49 oil filling cup, 50 oil drain plug screw and 51 oil cup protective cap.
Detailed Description
The embodiments of the present invention are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The present embodiment provides a high-speed permanent magnet motor for a hybrid power pack of a railway vehicle, as shown in fig. 1-2. Different from a common permanent magnet motor, the end part of the high-speed permanent magnet motor coil adopts an encapsulation technology, the stator core is positioned in a mode of matching and positioning the end part in a tooth form, the mounting structure of the rotary transformer is adjustable, and the transmission end bearing is lubricated in a mode of circulating gear oil lubrication.
The stator structure is as shown in fig. 3, different with general stator core location, and this permanent-magnet machine adopts the cooperation of the terminal rectangle tooth of unshakable in one's determination location, and stator core excircle, frame core keep off the interior circle and do not be equipped with flat keyway, and frame one end is equipped with stator core location and keeps off the platform, and one end is equipped with the circumference keyway of certain quantity in addition, and its circumference keyway quantity, stator clamping ring number of teeth, stator core number of teeth quantity design according to the motor torque. The front and rear stator end plates and the stator punching sheet are stacked, pressed and welded together to form a stator core, external rectangular teeth are processed on the end face of the stator core, then a stator winding is embedded in a stator core slot and fixed by a slot wedge, and the stator core with the winding is formed, as shown in fig. 4. The stator core with the winding is put into the machine base core block, the outer circle of the stator core with the winding is matched with the inner circle of the machine base core block in a small interference range, and the stator core with the winding and the machine base core block can be detached. The outer rectangular teeth of the stator core mate with the inner rectangular teeth of the stator clamping ring as shown in fig. 5. The stator arc key is placed in a circumferential key groove of the base, the stator arc key is connected with the stator pressing ring through the jackscrew, and the stator core can be axially pre-tightened by loading jackscrew torque.
Coil encapsulation is needed when the stator wire embedding is completed, as shown in fig. 3, and different from a general motor stator winding paint dipping process, the permanent magnet motor adopts a coil encapsulation process. The whole encapsulation infiltration process is realized in a full vacuum environment. The method comprises the following substeps:
1. and respectively injecting the epoxy resin insulating material and the curing agent into the two material storage tanks according to the proportion.
2. And a film circulating defoaming mode is adopted, air in the epoxy resin insulating material is completely removed in vacuum, and the double-component epoxy resin insulating material is effectively preheated and insulated.
3. Heating and preserving heat of a mixing tank on the epoxy resin vacuum pouring equipment, and then putting raw materials in the two material storage tanks into the mixing tank.
4. And starting the automatic stirring function of the mixing tank, and stirring for 30 minutes to uniformly mix the epoxy resin insulating material and the curing agent.
5. In the stirring process, putting the stator structure into a vacuum pressure tank on epoxy resin vacuum casting equipment, heating and insulating a tank body of the vacuum pressure tank, and vacuumizing the vacuum pressure tank to a specified pressure;
6. starting a valve to uniformly pour the raw materials uniformly stirred in the mixing tank onto a motor stator through a pipeline, and observing through a small window while pouring;
7. and after the pouring is finished, closing the valve, canceling the heat preservation of the vacuum pressure tank, naturally cooling the stator structure in the vacuum pressure tank, opening the door of the vacuum pressure tank when the stator structure is cooled to 30-40 ℃, and finishing the pouring process.
The structure of the non-transmission end cover provided with the grounding bolt is shown in an A-direction view in fig. 2, and the end cover is provided with a rotary transformer mounting position, a connecting rod fixing hole and a semi-waist-shaped key groove. The outer ring of the rotary transformer is placed on the mounting position of the end cover of the rotary transformer and can rotate in the circumferential direction, the semicircular key groove of the rotary transformer is arranged opposite to the semi-kidney-shaped key groove of the end cover of the non-transmission end, the circular key is placed in the semicircular key groove of the rotary transformer, and one end of the connecting rod shown in figure 6 is fixed on the fixing hole of the connecting rod of the end cover; the bar-shaped hole at the other end is connected with the round key in a sliding mode, the rotary transformer is driven to rotate axially through the rotary connecting rod, a countersunk hole is formed in the connecting rod, the connecting rod is fixed on the end cover through a countersunk connecting rod bolt, the connecting rod is closed through tightening the bolt, the rotary transformer is clamped and fixed through the connecting rod, the rotary transformer is adjusted if needed, the connecting rod bolt and the pressing plate bolt are firstly loosened, and the connecting rod is rotated to drive the outer ring of the rotary transformer to rotate. The outgoing line of the rotary transformer passes through the end cover of the non-transmission end and is connected to a control connector outside the machine base.
The bearing lubricating structure of the high-speed permanent magnet motor is different from the bearing lubricating structure of a common permanent magnet motor, one end of the motor is lubricated by grease, and the other end of the motor is lubricated by oil. The grease lubricated end uses the single face sealed bearing, and this end bearing load is little, and the vibration is strikeed for a short time, and maintenance operation is convenient. When the bearing is maintained regularly, the service performance of the bearing can be ensured only by detaching the oil drainage plug screw and the oil cup protective cap on the non-transmission end cover and filling a certain amount of specified lubricating grease by using an oil gun, and the maintenance operation of the bearing at the end is convenient and simple. One end of the oil lubrication is lubricated by gear oil of the transmission, the end cover of the transmission end and the transmission form a closed gear transmission device, namely, the bearing of the transmission end is lubricated by the gear oil of the transmission, the gear oil enters a bearing chamber through a magnetic oil filter (figure 9) at an oil inlet, and the gear oil enters the transmission again through a front bearing, a flywheel and an oil outlet. Rely on derailleur gear oil to lubricate completely, need to guarantee that the inside gear oil quality of reduction gear is clean, maintain the maintenance together with the derailleur, concrete implementation does: gear oil is filled in the transmission, the liquid level of the gear oil is higher than the oil inlet of the transmission end cover, the gear oil passes through the magnetic oil filter, the oil filter prevents impurity particles in the transmission from entering the bearing, and the magnetic oil filter has magnetism, has the function of adsorbing scrap iron and prevents metal from damaging the bearing. After the gear oil reaches a certain height in the bearing chamber, the front bearing is immersed in the gear oil, the front bearing is completely lubricated when rotating, a flywheel blade is processed on a rotating shaft of the motor, the rotating shaft and the oil retainer form a flywheel, the flywheel rotates rapidly when the motor runs, the gear oil is transported to the position of the oil storage groove of the inner cover under the action of centrifugal force, the oil storage groove is the same as the oil outlet position of the end cover of the transmission end, and the gear oil passes through the oil outlet position and is discharged into the transmission again. The transmission end cover, the transmission end bearing inner cover, the oil seal and the sealing ring ensure the sealing performance of the bearing chamber and prevent gear oil in the bearing chamber from reaching the inside of the motor.
The front rotor end plate and the transmission end bearing inner cover form a sealing labyrinth to prevent gear oil from leaking into the motor and prevent motor impurities from damaging the oil seal. When gear oil had the seepage condition to take place, seepage gear oil reachd inside the sealed labyrinth, inside the sealed labyrinth prevented that gear oil from entering into the motor, in the gear oil of seepage reachd the oil chamber of end cover lower part through oil extraction passageway, the grease chamber was equipped with the sight glass, and the staff will regularly maintain the inspection. The grease chamber bottom is equipped with the oil drain port, when the staff passes through the sight glass discovery grease chamber and has gear oil, in time opens the ventilative valve of frame below, judges the inside condition that also has the oil feed of motor, if this condition takes place the maintenance of shutting down in time. The O-shaped sealing rings are arranged at a plurality of positions on the end cover of the transmission end, so that the sealing performance of a closed gear transmission device consisting of the transmission and the motor is ensured, and gear oil is ensured not to permeate into the outside of the transmission. Therefore, as long as the oil level of gear oil inside the speed change and the cleanness of the gear oil are ensured, a bearing at the transmission end of the motor can be lubricated by the gear oil continuously, in addition, the rotating flywheel can continuously discharge the gear oil inside the bearing chamber, after the gear oil inside the bearing chamber is pumped away by the flywheel, new gear oil can enter the bearing chamber from the inside of the speed changer, most of bearing heat can be taken away by the circulating oil path, the temperature of the motor bearing can not be too high under the condition of high-load operation, the performance of the bearing is fully exerted, and the perfect operation of the motor is ensured.
The front bearing at the transmission end is provided with an explosion structure, as shown in fig. 8, the flow speed of a lubricating oil path of the front bearing can ensure that the front bearing is sufficiently lubricated according to the number of impeller grooves of a rotating shaft of a motor and the diameter of the oil path.
The rotor structure mainly comprises a rotating shaft, a front rotor end plate, a rotor punching sheet, magnetic steel, a rear rotor end plate, a thrust washer, a round nut and a rotor key. The front rotor end plate and the rear rotor end plate are arranged at two ends of the rotor punching sheet, the magnetic steel is positioned in a magnetic steel groove of the rotor punching sheet, and the rotor punching sheet is locked by a round nut and a thrust washer after being stacked and pressed. The inner cover of the bearing at the transmission end and the end plate of the front rotor are provided with labyrinth grooves to jointly form labyrinth seal, so that gear oil is prevented from entering the interior of the motor and impurities in the interior of the motor are prevented from damaging the oil seal. The rotor punching sheet has good magnetic conductivity and mechanical property through electromagnetic calculation and structural calculation. G1-level dynamic balance is needed after the rotor assembly is completed, and the rotor is guaranteed to operate at the highest rotating speed of 12000 rpm. The rotor has simple structure and high reliability.
The transmission end, the non-transmission end cover and the engine base are all made of 6063-T5 aluminum alloy, so that the transmission end, the non-transmission end cover and the engine base have good heat conductivity and structural strength, and the cylinder barrel is embedded at the end cover bearing stop, so that the bearing chamber is guaranteed to have high wear resistance and corrosion resistance. The water channel cavity of the base is a snakelike water channel, the water channel resistance is low, and the cross section of the water channel is large. The engine base has high mechanical strength and high-efficiency heat dissipation performance.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a rail car hybrid is high-speed permanent-magnet machine for package, is including being located the frame between transmission end cover and the non-transmission end cover, frame inner wall is connected with stator structure, and this stator structure is inside to be equipped with rather than complex rotor structure, stator structure includes stator core, stator winding, stator clamping ring, stator arc key, its characterized in that, stator core one end terminal surface processing has outer rectangle tooth, and the other end keeps off interior round joint with the iron core of frame, outer rectangle tooth inlays in the interior rectangle tooth of stator clamping ring, and a plurality of stator arc keys that are located frame circumference keyway are fixed on the stator clamping ring through the jackscrew, the embedding has stator winding on the stator core, the stator winding both ends are the embedment with insulating epoxy respectively.
2. The high-speed permanent magnet motor for the hybrid power pack of the rail car according to claim 1, wherein two ends of the stator winding are respectively encapsulated with insulating epoxy resin, specifically:
1) respectively injecting the epoxy resin insulating material and the curing agent into the two storage tanks according to the proportion;
2) the air in the epoxy resin insulating material is completely removed in vacuum by adopting a film circulating defoaming mode, and the two-component epoxy resin insulating material is effectively preheated and insulated;
3) heating and insulating a mixing tank on epoxy resin vacuum pouring equipment, and then putting raw materials in two storage tanks into the mixing tank;
4) starting the automatic stirring function of the material mixing tank, and stirring for 30 minutes to uniformly mix the epoxy resin insulating material and the curing agent together;
5) in the stirring process, putting the stator structure into a vacuum pressure tank on epoxy resin vacuum casting equipment, heating and insulating a tank body of the vacuum pressure tank, and vacuumizing the vacuum pressure tank to a specified pressure;
6) starting a valve to uniformly pour the raw materials uniformly stirred in the mixing tank onto the stator structure through a pipeline, and observing through a small window while pouring;
7) and after the pouring is finished, closing the valve, canceling the heat preservation of the vacuum pressure tank, naturally cooling the stator structure in the vacuum pressure tank, opening the door of the vacuum pressure tank when the stator structure is cooled to 30-40 ℃, and finishing the pouring process.
3. The high-speed permanent magnet motor for the hybrid power pack of the railway vehicle as claimed in claim 1, wherein the rotor structure comprises a rotating shaft, a rotor punching sheet, a front rotor end plate, a rear rotor end plate, a thrust washer, a round nut and magnetic steel, the magnetic steel is installed in a rotor punching sheet groove, the rotor punching sheet is laminated on the rotating shaft, the front rotor end plate and the rear rotor end plate are placed at two ends, the round nut is sleeved at the rear end of the rotating shaft for compression, and the thrust washer is arranged between the round nut and the rear rotor end plate.
4. The high-speed permanent magnet motor for the hybrid power pack of the rail car according to claim 3, wherein the rear end of the rotating shaft is connected with an inner ring of the rotary transformer, an outer ring of the rotary transformer is mounted on the non-transmission end cover through a pressing plate, a rotary transformer protection cover is arranged outside the rotary transformer and fixed in a fixing groove of the non-transmission end cover, and a lead-out wire of the rotary transformer penetrates through the non-transmission end cover and is connected to a control connector outside the base;
the rotary transformer is characterized in that a semicircular key groove is formed in the periphery of the outer ring of the rotary transformer, a semi-waist-shaped key groove is formed in the end cover of the non-transmission end, the semicircular key groove and the semi-waist-shaped key groove are arranged oppositely, the semicircular key groove is connected with the bottom of a round key, the top of the round key is connected with a strip-shaped groove of a connecting rod in a sliding mode, and the rotary connecting rod drives the rotary transformer to rotate axially.
5. The high-speed permanent magnet motor for a railcar hybrid package, according to claim 4, wherein the pressing plate is fixed to the non-transmission end cap by a pressing plate bolt, and the connecting rod is fixed to the non-transmission end cap by a connecting rod bolt, and when the resolver is adjusted, the connecting rod bolt and the pressing plate bolt need to be loosened, and the connecting rod is rotated to drive the resolver outer ring to rotate.
6. The high-speed permanent magnet motor for the hybrid power pack of the rail car according to claim 3, wherein the front end of the rotating shaft is connected with a transmission end cover through a front bearing, the transmission end cover is clamped with a transmission end bearing inner cover for the outer ring of the front bearing, the transmission end bearing inner cover and the front rotor end plate form a labyrinth seal, the transmission end bearing inner cover is provided with an internal oil seal, and an internal oil seal oil lip is in contact seal with the cylindrical surface of the rotating shaft; the rotary shaft is clamped with the inner ring of the front bearing by an oil retainer ring and a wear-resistant sleeve, an oil seal groove is arranged outside the transmission end cover and is clamped with an external oil seal, an external oil seal lip is in contact sealing with the wear-resistant sleeve, a magnetic oil filter is arranged at an oil inlet of the transmission end cover, an observation mirror is arranged at the bottom of an oil chamber of the transmission end cover, the observation mirror consists of an organic glass cover plate, a metal cover plate and an O-shaped sealing ring, and an observation window is formed in the metal cover plate; the transmission end cover is connected with the speed changer to form a closed gear transmission device.
7. The high-speed permanent magnet motor for the hybrid power pack of the rail car according to claim 6, wherein the front bearing is lubricated by oil, the inside of the transmission is filled with gear oil, the level of the gear oil is higher than that of an oil inlet of the end cover at the transmission end, so that the gear oil reaches the bearing chamber through the magnetic oil filter, when the gear oil reaches a certain height in the bearing chamber, the front bearing is immersed in the gear oil, and the bearing is completely lubricated when rotating; the flywheel blade is processed on the rotating shaft, the rotating shaft and the oil retainer form the flywheel, when the motor runs, the flywheel rotates rapidly, gear oil is transported to the oil storage groove of the inner cover of the bearing at the transmission end under the action of centrifugal force, the oil storage groove is the same as the oil outlet of the end cover at the transmission end, and the gear oil is discharged into the transmission again through the oil outlet.
8. The high-speed permanent magnet motor for the hybrid power pack of the rail car as claimed in claim 7, wherein the inner bearing cover of the transmission end and the front rotor end plate form a labyrinth seal, when the gear oil leaks, the leaked gear oil reaches the labyrinth seal and then reaches the oil chamber through the oil discharge channel, the oil chamber is provided with an oil discharge port, when a worker observes the oil chamber through an observation mirror and finds that the gear oil exists, a ventilation valve below the base is opened in time to judge whether the oil also exists in the motor, and if so, the motor is stopped and maintained in time.
9. The high-speed permanent magnet motor for a hybrid power pack of a railway vehicle as claimed in claim 3, wherein the rear end of the rotating shaft is connected to the non-driving end cap through a single-sided sealed bearing, one side of the single-sided sealed bearing adjacent to the rotary transformer is provided with a seal, the other side of the single-sided sealed bearing adjacent to the rotary transformer is provided with a bearing oil retainer ring with a labyrinth seal, the bearing oil retainer ring is clamped with the non-driving end cap, the non-driving end cap is provided with an oil filling channel and an oil filling cup, and the rotary transformer and the single-sided sealed bearing are arranged in the same cavity of the non-driving end cap.
10. The high-speed permanent magnet motor for a railcar hybrid according to claim 1, wherein said base has a waterway chamber formed at an upper portion thereof with a water inlet and at a lower portion thereof with a water outlet, said waterway chamber having a serpentine configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111006486.6A CN113726037B (en) | 2021-08-30 | 2021-08-30 | High-speed permanent magnet motor for railcar hybrid power pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111006486.6A CN113726037B (en) | 2021-08-30 | 2021-08-30 | High-speed permanent magnet motor for railcar hybrid power pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113726037A true CN113726037A (en) | 2021-11-30 |
| CN113726037B CN113726037B (en) | 2023-08-01 |
Family
ID=78679271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111006486.6A Active CN113726037B (en) | 2021-08-30 | 2021-08-30 | High-speed permanent magnet motor for railcar hybrid power pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113726037B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114552839A (en) * | 2022-01-27 | 2022-05-27 | 东阳市联宜机电有限公司 | High-performance brushless motor |
| CN117595560A (en) * | 2024-01-19 | 2024-02-23 | 河北亿泰克轴承有限公司 | Bearing assembly and motor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101157790A (en) * | 2007-10-22 | 2008-04-09 | 苏州巨峰绝缘材料有限公司 | Two-component heat-proof epoxy dipping insulating resin combination and method for making same |
| JP2012125054A (en) * | 2010-12-08 | 2012-06-28 | Toyota Boshoku Corp | Rotary electric machine |
| JP2013102579A (en) * | 2011-11-08 | 2013-05-23 | Sinfonia Technology Co Ltd | Rotary electric machine |
| US20140230216A1 (en) * | 2013-02-15 | 2014-08-21 | Travis John Vitello | Method and apparatus for generator stator core separation |
| JP2017127150A (en) * | 2016-01-15 | 2017-07-20 | Ntn株式会社 | Fixing structure of stator in motor |
| CN207124495U (en) * | 2017-08-01 | 2018-03-20 | 明阳智慧能源集团股份公司 | A kind of tooth pressboard structure of half direct drive wind generator stator |
| CN107994750A (en) * | 2017-12-19 | 2018-05-04 | 卧龙电气集团股份有限公司 | A kind of high power density high-speed permanent magnetic synchronous motor |
| CN207638424U (en) * | 2017-12-19 | 2018-07-20 | 卧龙电气集团股份有限公司 | A kind of novel motor stator exterior laminated structure |
| CN108964309A (en) * | 2018-07-11 | 2018-12-07 | 精基科技有限公司 | High pressure increased safety frequency conversion permanent magnet synchronous motor |
| CN112350468A (en) * | 2020-10-29 | 2021-02-09 | 浙江大学 | Motor end plate and motor comprising same |
-
2021
- 2021-08-30 CN CN202111006486.6A patent/CN113726037B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101157790A (en) * | 2007-10-22 | 2008-04-09 | 苏州巨峰绝缘材料有限公司 | Two-component heat-proof epoxy dipping insulating resin combination and method for making same |
| JP2012125054A (en) * | 2010-12-08 | 2012-06-28 | Toyota Boshoku Corp | Rotary electric machine |
| JP2013102579A (en) * | 2011-11-08 | 2013-05-23 | Sinfonia Technology Co Ltd | Rotary electric machine |
| US20140230216A1 (en) * | 2013-02-15 | 2014-08-21 | Travis John Vitello | Method and apparatus for generator stator core separation |
| JP2017127150A (en) * | 2016-01-15 | 2017-07-20 | Ntn株式会社 | Fixing structure of stator in motor |
| CN207124495U (en) * | 2017-08-01 | 2018-03-20 | 明阳智慧能源集团股份公司 | A kind of tooth pressboard structure of half direct drive wind generator stator |
| CN107994750A (en) * | 2017-12-19 | 2018-05-04 | 卧龙电气集团股份有限公司 | A kind of high power density high-speed permanent magnetic synchronous motor |
| CN207638424U (en) * | 2017-12-19 | 2018-07-20 | 卧龙电气集团股份有限公司 | A kind of novel motor stator exterior laminated structure |
| CN108964309A (en) * | 2018-07-11 | 2018-12-07 | 精基科技有限公司 | High pressure increased safety frequency conversion permanent magnet synchronous motor |
| CN112350468A (en) * | 2020-10-29 | 2021-02-09 | 浙江大学 | Motor end plate and motor comprising same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114552839A (en) * | 2022-01-27 | 2022-05-27 | 东阳市联宜机电有限公司 | High-performance brushless motor |
| CN114552839B (en) * | 2022-01-27 | 2024-04-19 | 浙江联宜电机有限公司 | High-performance brushless motor |
| CN117595560A (en) * | 2024-01-19 | 2024-02-23 | 河北亿泰克轴承有限公司 | Bearing assembly and motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113726037B (en) | 2023-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113726037B (en) | High-speed permanent magnet motor for railcar hybrid power pack | |
| CN110086296B (en) | High-efficiency oil-cooled permanent magnet synchronous motor | |
| CN104578595A (en) | Cooling system of flywheel energy storage device | |
| CN101787978A (en) | Novel fully-tubular electric submerged pump with shaft incapable of transferring torque | |
| CN114793041A (en) | Water-oil combined cooling speed reduction motor base | |
| CN202050316U (en) | High-power traction motor bearing lubricating structure | |
| CN201521462U (en) | Novel full through-flow submersible pump | |
| CN214626711U (en) | Water-oil combined cooling speed reduction motor base | |
| CN110880834A (en) | Embedded spiral outer rotor cooling motor | |
| CN213717780U (en) | Outer rotor permanent magnet direct-drive type oil-cooling electric roller structure | |
| CN215633389U (en) | Corrosion-resistant rear cover with automatic oil supplementing function | |
| KR20220136266A (en) | Electric machine having a reservoir for coolant leakage | |
| CN112564406A (en) | Totally-enclosed low-speed permanent magnet driving system for electric ball valve | |
| CN201466874U (en) | Frequency-conversion speed-regulation asynchronous traction motor for high-speed alternating current passenger locomotive | |
| CN210053263U (en) | Permanent magnet roller integrated machine | |
| CN113250950A (en) | Wet rotor internal meshing direct-drive gear oil pump and assembly method thereof | |
| CN220349490U (en) | Charging device of electric automobile | |
| CN217522678U (en) | 3000kW semi-direct-drive vertical mill permanent magnet motor | |
| CN218760564U (en) | Permanent magnet suspension oil-free and ion-free gas pump | |
| CN205297925U (en) | Combined cooling formula pressure lubrication electric vacuum pump | |
| CN204247140U (en) | A kind of magnetic drives formula homogenizer | |
| CN217935309U (en) | Leakage-free totally-enclosed electric transmission device | |
| CN218771543U (en) | Permanent magnet motor with electric corrosion prevention structure | |
| CN211175446U (en) | Novel flange cast steel blind plate valve | |
| CN206379860U (en) | A kind of water-cooling permanent magnet brshless DC motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220531 Address after: 116100 No.5 Xiangtai Road, Guangming Street, Jinzhou District, Dalian City, Liaoning Province Applicant after: DALIAN RIQIAN MOTOR Co.,Ltd. Applicant after: CRRC DALIAN INSTITUTE Co.,Ltd. Address before: 116100 No.5 Xiangtai Road, Guangming Street, Jinzhou District, Dalian City, Liaoning Province Applicant before: DALIAN RIQIAN MOTOR Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |