CN111371246B - Air-cooled structure electric drive assembly for track inspection vehicle - Google Patents
Air-cooled structure electric drive assembly for track inspection vehicle Download PDFInfo
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- CN111371246B CN111371246B CN202010157715.3A CN202010157715A CN111371246B CN 111371246 B CN111371246 B CN 111371246B CN 202010157715 A CN202010157715 A CN 202010157715A CN 111371246 B CN111371246 B CN 111371246B
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- speed reducer
- driving motor
- rotor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- 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
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
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- 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
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
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- 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
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- 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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Abstract
The invention provides an electric drive assembly with an air cooling structure for a track inspection vehicle, which comprises a drive motor assembly and a speed reducer assembly, wherein the drive motor assembly is connected with the speed reducer assembly; the speed reducer assembly is fixed at the front end of the driving motor assembly, the driving motor assembly and the speed reducer assembly are coaxial, and the front end of an output shaft of the rotor assembly on the driving motor assembly is meshed with a planetary gear in the speed reducer assembly. On one hand, the motor adopts the permanent magnet synchronous motor with an air cooling structure, so that the motor has the advantages of smaller volume, higher efficiency and power density, compact structure, higher reliability and lower manufacturing cost; on the other hand, the driving motor assembly is integrated with the reducer assembly, so that the output driving torque is larger, and the structure is more compact; in addition, the planetary gear speed reducing mechanism is adopted, the axial space size is further compressed, the performance requirement of the driving assembly is considered, and the installation arrangement and the performance requirement of the track inspection vehicle can be met.
Description
Technical Field
The invention relates to an electric drive assembly with an air cooling structure for a track inspection vehicle.
Background
Since the 21 st century, urban rail transit construction with the characteristics of energy conservation, rapidness and large traffic volume is getting more and more attention from a plurality of cities. The urban rail transit is an urban public passenger transport system which runs by adopting special rail guidance, and comprises a subway system, a light rail system, a tramcar, a monorail system, an automatic guidance rail system, an urban area rapid rail system and a magnetic suspension system. Because smooth, efficient and reliable traffic travel is not only the basis for travelers to select travel modes, but also is the target pursued by urban traffic managers, along with the gathering of population to cities, a plurality of cities of two-three lines, provincial society and even cities of three-four lines begin to consider or pass through traffic and rail matters. Therefore, urban rail transit becomes an important component of urban public transport by virtue of the characteristics of rapidness, convenience, safety, large transportation volume, high transportation efficiency and the like
Along with the continuous increase of the operation mileage of the rail transit, the detection and maintenance of the rail are one of the problems which must be considered, related mechanisms are developed at home and abroad to develop intelligent inspection vehicles, the automation of rail detection is realized, the conventional electric drive assembly is mostly used for the electric drive required by the conventional inspection vehicle at present, a water cooling structure is adopted, the whole vehicle system is complex, and the problems of large volume, low transmission efficiency, high power consumption, high manufacturing cost, low reliability, complex structure and the like exist.
Disclosure of Invention
In order to solve the technical problems, the invention provides the air-cooled structure electric drive assembly for the track inspection vehicle, which solves or partially solves the problem that the performance of the electric drive assembly of the track inspection vehicle cannot be met in the prior art, and has the advantages of compact structure, high efficiency, high reliability, light weight and low cost.
The invention is realized by the following technical scheme.
The invention provides an electric drive assembly with an air cooling structure for a track inspection vehicle, which comprises a drive motor assembly and a speed reducer assembly, wherein the drive motor assembly is connected with the speed reducer assembly; the speed reducer assembly is fixed at the front end of the driving motor assembly, the driving motor assembly and the speed reducer assembly are coaxial, and the front end of an output shaft of the rotor assembly on the driving motor assembly is meshed with a planetary gear in the speed reducer assembly.
The motor shell of the driving motor assembly is provided with axial rib plates, the rear end of the driving motor assembly is provided with a cooling fan fixed on the rotor assembly, and the cooling fan is ventilated on the motor shell at intervals of the axial rib plates.
And the cooling fan is fixed at the rear end of the rotating shaft of the rotor assembly through a locking nut.
The planet gear is installed on the planet gear axle, and the planet gear axle is fixed in the hole of planet carrier, and the planet carrier is integrated into one piece, supports the installation through rear bearing and front bearing.
The rear bearing is mounted on the front shell, the front bearing is mounted on the rear shell, and the front shell and the rear shell are spliced and fixed in the front and rear direction to form a shell of the speed reducer assembly.
An inner gear ring is arranged in the rear shell and meshed with the planetary gear.
The driving motor assembly consists of a casing, a stator, a rotor assembly and a rotary transformer assembly, the stator and the rotor assembly are assembled to form a motor, the rotary transformer assembly is arranged on the rotor assembly and is respectively fixed on the casing and the rotor assembly, and the stator is fixed on the casing.
The rotor assembly is installed through a rear bearing and a front bearing, and the stator and the rotary transformer assembly are located between the rear bearing and the front bearing.
The rotor assembly consists of a rear shaft sleeve, a rotating shaft, a rotor iron core, magnetic steel, a limiting block, a sheath, an end plate and a middle shaft sleeve, wherein the rear shaft sleeve and the middle shaft sleeve are sleeved and fixed on the rotating shaft; the magnetic steel is fixed on the magnetic steel through gluing, the limiting block is clamped in the gap of the magnetic steel and is in a wedge-shaped structure matched with the shape of the wedge-shaped groove on the outer surface of the rotor core; the inner surface of the rotor core is provided with a boss, the rotating shaft is provided with a groove, and the shape of the boss of the rotor core is matched with that of the groove of the rotating shaft.
The invention has the beneficial effects that: on one hand, the motor adopts the permanent magnet synchronous motor with an air cooling structure, so that the motor has the advantages of smaller volume, higher efficiency and power density, compact structure, higher reliability and lower manufacturing cost; on the other hand, the driving motor assembly is integrated with the reducer assembly, so that the output driving torque is larger, and the structure is more compact; in addition, the planetary gear speed reducing mechanism is adopted, the axial space size is further compressed, the performance requirement of the driving assembly is considered, and the installation arrangement and the performance requirement of the track inspection vehicle can be met.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of the internal structure of FIG. 1;
FIG. 3 is a schematic cross-sectional view of a portion of the rotor assembly of FIG. 1;
fig. 4 is a schematic view of a portion of the rotor assembly of fig. 1.
In the figure: 1-drive motor assembly, 2-reducer assembly, 101-machine shell, 102-stator, 103-rotor assembly, 104-rotary transformer assembly, 105-wave washer, 106-total bolt, 107-cooling fan, 108-lock nut, 109-rear cover, 110-motor bolt, 111-plug, 112-motor oil seal, 113-plug bolt, 121-stator iron core, 122-winding, 123-three-phase line, 130-rear shaft sleeve, 131-rotating shaft, 132-rotor iron core, 133-magnetic steel, 134-limiting block, 135-sheath, 136-end plate, 137-collar, 138-rear bearing, 139-front bearing, 1311-middle shaft sleeve, 141-rotary transformer rotor, 142-rotary transformer stator, 143-rotary transformer plate, 144-rotation variable screw, 201-front housing, 202-rear housing, 203-ring gear, 204-planet carrier, 205-planet gear, 206-planet gear shaft, 207-rear bearing, 208-front bearing, 209-rear oil seal, 210-front oil seal, 211-flat key, 212-general assembly screw.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1 to 4, the electric drive assembly with the air cooling structure for the track inspection vehicle comprises a drive motor assembly 1 and a speed reducer assembly 2; the speed reducer assembly 2 is fixed at the front end of the driving motor assembly 1, the driving motor assembly 1 and the speed reducer assembly 2 are coaxial, and the front end of an output shaft of the rotor assembly 103 on the driving motor assembly 1 is meshed with the planetary gear 205 in the speed reducer assembly 2.
An axial rib plate is arranged on a shell 101 of the driving motor assembly 1, a cooling fan 107 is arranged at the rear end of the driving motor assembly 1 and fixed on a rotor assembly 103, and the cooling fan 107 is ventilated at the interval of the axial rib plate on the shell 101.
The cooling fan 107 is fixed to the rear end of the rotating shaft 131 of the rotor assembly 103 by a lock nut 108.
The planet gears 205 are mounted on planet gear shafts 206, the planet gear shafts 206 are fixed in inner holes of the planet carrier 204, and the planet carrier 204 is integrally formed and is supported and mounted through a rear bearing 207 and a front bearing 208.
The rear bearing 207 is mounted on the front housing 201, the front bearing 208 is mounted on the rear housing 202, and the front housing 201 and the rear housing 202 are spliced and fixed in the front-rear direction to form a housing of the reducer assembly 2.
An inner gear ring 203 is arranged in the rear shell 202, and the inner gear ring 203 is meshed with the planet gears 205.
The driving motor assembly 1 is composed of a casing 101, a stator 102, a rotor assembly 103 and a rotary transformer assembly 104, wherein the stator 102 and the rotor assembly 103 are assembled to form a motor, the rotary transformer assembly 104 is installed on the rotor assembly 103 and is respectively fixed on the casing 101 and the rotor assembly 103, and the stator 102 is fixed on the casing 101.
The rotor assembly 103 is mounted by a rear bearing 138 and a front bearing 139, and the stator 102 and the resolver assembly 104 are located between the rear bearing 138 and the front bearing 139.
The rotor assembly 103 is composed of a rear shaft sleeve 130, a rotating shaft 131, a rotor core 132, magnetic steel 133, a limiting block 134, a sheath 135, an end plate 136 and a middle shaft sleeve 1311, the rear shaft sleeve 130 and the middle shaft sleeve 1311 are sleeved and fixed on the rotating shaft 131, the rear shaft sleeve 130 is fixed at a position corresponding to the rotary transformer assembly 104, the sheath 135 is fixed at a position corresponding to the stator 102, the sheath 135 is sleeved on the middle shaft sleeve 1311, and the end plate 136 is fixed at the end part of the sheath 135; the magnetic steel 133 is fixed on the magnetic steel 133 through gluing, the limiting block 134 is clamped in the gap of the magnetic steel 133, and the limiting block 134 is in a wedge structure and is matched with the shape of a wedge groove on the outer surface of the rotor core 132; the inner surface of the rotor core 132 is provided with a boss, the rotating shaft 131 is provided with a groove, and the shape of the boss of the rotor core 132 is matched with that of the groove of the rotating shaft 131.
Example 1
In a typical embodiment of the invention, the driving motor assembly 1 is connected with the reducer assembly 2 through bolts, and the formed driving assembly is connected with a vehicle of the inspection vehicle, so as to drive the whole vehicle to run.
The driving motor assembly 1 is a permanent magnet synchronous motor structure of an inner rotor outer stator, and adopts a forced air cooling structure.
The speed reducer assembly 2 is of a planetary gear speed reducing structure, and is lubricated by lubricating grease, and the structure can also be adjusted to be lubricated by lubricating oil.
The motor assembly 1 mainly comprises a shell 101, a stator 102, a rotor assembly 103, a rotary transformer assembly 104, a wave washer 105, a main bolt 106, a cooling fan 107, a lock nut 108, a rear cover 109, a motor bolt 110, a plug 111, a motor oil seal 112 and a plug bolt 113;
the rotary transformer assembly 104 mainly includes a rotary transformer rotor 141, a rotary transformer stator 142, a rotary transformer pressing plate 143, and a rotary transformer screw 144. The stator 102 is fixed in the casing 101, the rotary transformer rotor 141 in the rotary transformer assembly 14 is fixed on the rotor assembly 103, the rotary transformer stator 142 is fixed on the inner hole of the casing 101 through the rotary transformer pressing plate 143 and the rotary transformer screw 144, when assembling, the rotary transformer stator 142 and the rotary transformer pressing plate 143 are fixed on the casing 101 through the rotary transformer screw 144, and then the stator 102 is assembled.
Stator 102 includes stator core 121, winding 122, and three-phase line 123. After the windings 122 are connected according to the design requirements of the motor, the three-phase wires 123 are led out finally, and the three-phase wires 123 are led out independently through three holes in the side face of the machine shell 101 and then connected to a motor controller.
When the winding 122 is off-line, a temperature sensor is embedded in the end part for monitoring the temperature of the winding 122 when the motor works, and the temperature rise of the motor is ensured to be in the temperature resistance range of the motor insulating material and the magnetic steel.
The wave washer 105 is installed in a bearing chamber at the rear end of the housing 101 for reducing the axial play of the rotor assembly 103 and improving the performance of the motor.
The plug 111 is mounted on the side of the housing 101 independently of the three phase wires 123 of the winding 122. The plug 111 is mainly used for connecting an outgoing line of the rotary transformer assembly 104 and an outgoing line of the temperature sensor, and then the wiring harness and the plug 111 are connected to the motor controller, so that a rotation position signal and an operation working temperature of the motor are fed back to the motor controller, and meanwhile, the interference of the three-phase line 123 can be prevented.
The rotor assembly 103 is of a surface-mounted structure and comprises a rotating shaft 131, a rotor core 132, magnetic steel 133, a limiting block 134, a sheath 135, an end plate 136, a collar 137, a bearing 138, a bearing 139, a shaft sleeve 130 and a shaft sleeve 1311. The inner hole of the rotor core 132 is provided with a boss, the rotating shaft 131 is provided with a groove, the rotor core 132 is prevented from rotating radially relative to the rotating shaft 131 after the rotor core 132 and the rotating shaft are matched, the contact surface of the magnetic steel 133 and the rotor core 132 is coated with glue and fixed, the magnetic steel 133 is limited in the circumferential direction by the limiting block 134, the limiting block 134 is of a wedge-shaped structure and is matched with the wedge-shaped groove on the rotor core 132, the contact surface of the magnetic steel 133 and the wedge-shaped. In view of the processing technology, the magnetic steel 133 can be designed in a segmented manner in the axial direction according to the length-width ratio, the two ends are fixed by the end plates 136, one side of the magnetic steel is axially limited with the stop shoulder on the rotating shaft 131, and the other section of the magnetic steel is fixed by the shaft sleeve 130.
Sheath 135 and magnet steel 133 excircle interference fit prevent that magnet steel 133 from dropping after the glue that magnet steel 133 smeared became invalid.
The magnetic steel 133 is of a fan-shaped structure, made of neodymium iron boron, and is uniformly installed on the outer circle of the rotor core 132 in the circumferential direction.
In order to reserve enough space for the end of winding 122 and rotating assembly 104, rotor core 132 and bearing 138 are axially positioned by using sleeve 130 and sleeve 1311, respectively, and finally bearing 138 is fixed on rotating shaft 131 by means of collar 137.
In order to reduce the weight of the rotor assembly 103, on the basis of meeting the output performance and reliability of the motor, the electromagnetic performance and the structural strength of the motor are analyzed through multi-parameter simulation, finally, holes with the same size and 20 consistent sizes are uniformly formed in the circumferential direction of a yoke part of the rotor core 132, meanwhile, a groove is formed in the middle of a contact part of the rotating shaft 131 and the rotor core 132, and a central hole is formed in the rotating shaft 131.
The cooling fan 107 is fixed at the rear end of the rotating shaft 131 of the rotor assembly 103 through the lock nut 108, and after the motor is powered on, the rotor assembly 103 rotates, and then the cooling fan 107 is driven to rotate.
The rear cover 109 is fixed on the casing 101 through the bolt 1010, a gap exists between the rear cover 109 and the casing 101, and the cooling fan 107 rotates to drive cooling air to flow to the surface of the casing 101 along the gap, so that heat generated in the motor is taken away, the temperature of the motor is reduced, and the operation reliability of the motor is improved.
The motor oil seal 112 is used for preventing foreign matters such as external ash layers and liquid from entering the motor from the rear end, the motor oil seal 112 is of a lip-shaped structure, the inner lip is in interference fit with the rotating shaft 131, and the outer circle is in interference fit with the shell 101.
The reducer assembly 2 mainly includes a reducer front housing 201, a reducer rear housing 202, an inner ring gear 203, a carrier 204, planetary gears 205, planetary gear shafts 206, a rear bearing 207, a front bearing 208, a rear oil seal 209, a front oil seal 210, a flat key 211, and assembly screws 212.
The motor assembly 1 and the reducer assembly 2 are positioned by adopting a spigot, the motor assembly and the reducer assembly are fixed by adopting a main bolt 106, and a boss on the reducer front shell 201 is contacted with the stator 102 to limit the axial movement of the stator 102.
The front end bearing 139 of the rotor assembly 111 is installed in a bearing chamber of the reducer front housing 201, and the bearing chamber is concentric with the center line of the reducer carrier 204 and the center line of the motor rotating shaft 131, so that the positioning precision is higher.
The sun gear of the speed reducer assembly 2 and the rotating shaft 131 in the driving motor assembly 1 are integrated into a whole, so that the processing is more convenient, the precision is more easily ensured, and the assembly performance is improved. The sun gear meshes with the planetary gears 205.
Inside back oil blanket 209 mainly prevents that the inside lubricating grease of reduction gear assembly 2 from revealing the entering motor, back oil blanket 209 is lip structure, lip and pivot 131 interference fit, excircle and reduction gear procapsid 201 hole interference fit.
The planet carrier 204 is of an integral structure, so that the strength and the rigidity are better, and the machining precision is easier to guarantee. The planet gears 205 are fixed to the inner holes of the carrier 204 by planet gear shafts 206. The planetary gears 205 are interference-fitted with the planetary gear shafts 206.
The carrier 204 is supported at both ends thereof by a rear bearing 207 and a front bearing 208, respectively, the rear bearing 207 being mounted in a bearing chamber of the reducer front case 201, and the front bearing 208 being mounted in a bearing chamber of the reducer rear case 202.
The ring gear 203 is fixed to the reducer rear case 202, and meshes with the planetary gears 205.
The front oil seal 210 is used for preventing foreign matters such as external ash layers and liquid from entering the interior of the speed reducer from the rear end and preventing lubricating grease in the interior of the speed reducer from leaking, the front oil seal 210 is of a lip-shaped structure, the inner lip is in interference fit with the planet carrier 204, and the outer circle is in interference fit with the inner hole of the rear shell 202 of the speed reducer.
The front reducer housing 201 and the rear reducer housing 202 are positioned in a spigot fit manner and finally fixed through assembly screws 212.
The flat key 211 is arranged in the key groove of the planet carrier 204 and is finally matched with the key groove on the wheel shaft to transmit the rotating speed and the torque after being radially fixed.
The surface of the machine shell 101 is provided with a plurality of axial rib plates, so that wind generated by the cooling fan 107 can be guided to flow axially along the surface of the machine shell 101, the running temperature of the motor can be reduced, the running temperature of the speed reducer can be reduced to a certain extent, and the reliability of the driving assembly is improved.
The driving motor assembly 1 can be a driving motor or a generator, when the whole vehicle needs power, the motor runs in a driving motor state, electric energy is consumed, and the electric energy is converted into mechanical energy to drive the whole vehicle to run. When the whole vehicle slides or brakes in a decelerating way, the motor runs in a generator state, energy is recovered, mechanical energy is converted into electric energy, the battery is charged for storing energy, and the endurance mileage of the whole vehicle is further improved.
It can be seen from embodiment 1 that the front and back relative positions of the rotary transformer assembly 104 and the stator 102 are reversed, which does not affect the practical effect of the present invention.
The specific working mode of the invention mainly comprises the following steps: the driving motor assembly 1 receives electric energy released by a battery of the whole vehicle through the controller, a stator 102 of the driving motor assembly 1 receives the electric energy released by the battery and generates a rotating magnetic field after being electrified, a rotor assembly 103 with a permanent magnet is pulled to rotate, the electric energy is further converted into mechanical energy, power is transmitted to a sun gear of the reducer assembly 2, a speed reduction and torque increase system is formed by a planetary gear 205 and an inner gear ring 203, and finally the mechanical energy is output through a planet carrier 204 to drive the whole vehicle to run; the torque and the rotating speed output by the driving motor assembly 1 are controlled by controlling the current output by the battery, and the rotating speed output by the motor is mainly reduced by the reducer assembly 2, so that the output torque is enlarged, and the power performance of the whole vehicle is improved.
Therefore, the sun gear in the speed reducer assembly 2 and the rotating shaft 131 in the driving motor assembly 1 are integrated into a whole, the driving motor assembly 1 is matched and positioned through the front speed reducer shell 201 in the speed reducer assembly 2, and meanwhile, the cooling fan 107 is used for dissipating heat, so that the operating temperature of the driving assembly under the peak working condition is reduced, the structure is more compact, the matching precision is higher, the structure of the driving assembly is simplified, the universality is strong, the weight is lighter, and the manufacturing cost is lower; meanwhile, the driving assembly has lower noise and higher efficiency and reliability, and can meet various severe requirements of the current urgent rail inspection vehicle on the driving assembly.
Claims (5)
1. The utility model provides a track is patrolled and examined car and is used forced air cooling structure electric drive assembly, includes driving motor assembly (1) and reduction gear assembly (2), its characterized in that: the speed reducer assembly (2) is fixed at the front end of the driving motor assembly (1), the driving motor assembly (1) and the speed reducer assembly (2) are coaxial, and the front end of an output shaft of the rotor assembly (103) on the driving motor assembly (1) is meshed with a planetary gear (205) in the speed reducer assembly (2); the planet gear (205) is mounted on a planet gear shaft (206), the planet gear shaft (206) is fixed in an inner hole of the planet carrier (204), and the planet carrier (204) is integrally formed and is supported and mounted through a rear bearing (207) and a front bearing (208); the driving motor assembly (1) is composed of a machine shell (101), a rear cover (109), a stator (102), a rotor assembly (103) and a rotary transformer assembly (104), the stator (102) and the rotor assembly (103) are assembled to form the motor, the rotary transformer assembly (104) is installed on the rotor assembly (103) and is respectively fixed on the machine shell (101) and the rotor assembly (103), and the stator (102) is fixed on the machine shell (101); the rear cover (109) is fixed on the machine shell (101) through a bolt (1010), and a gap exists between the rear cover (109) and the machine shell (101); the rear bearing (207) is mounted on the front shell (201), the front bearing (208) is mounted on the rear shell (202), and the front shell (201) and the rear shell (202) are spliced and fixed in the front and back direction to form a shell of the speed reducer assembly (2); an inner gear ring (203) is arranged in the rear shell (202), and the inner gear ring (203) is meshed with the planetary gear (205); a sun gear of the speed reducer assembly (2) is integrated with a rotating shaft (131) in the driving motor assembly (1); the rear oil seal (209) of the speed reducer assembly (2) is of a lip-shaped structure, the lip is in interference fit with the rotating shaft (131), and the outer circle is in interference fit with an inner hole of the front speed reducer shell (201).
2. The electric drive assembly of the air cooling structure for the track inspection vehicle according to claim 1, wherein: an axial rib plate is arranged on a machine shell (101) of the driving motor assembly (1), a cooling fan (107) is fixed on the rotor assembly (103) at the rear end of the driving motor assembly (1), and the cooling fan (107) is ventilated to the axial rib plate on the machine shell (101) at intervals.
3. The electric drive assembly of the air cooling structure for the track inspection vehicle according to claim 2, wherein: the cooling fan (107) is fixed at the rear end of a rotating shaft (131) of the rotor assembly (103) through a locking nut (108).
4. The electric drive assembly of the air cooling structure for the track inspection vehicle according to claim 1, wherein: the rotor assembly (103) is mounted through a rear bearing (138) and a front bearing (139), and the stator (102) and the rotating transformer assembly (104) are located between the rear bearing (138) and the front bearing (139).
5. The electric drive assembly of the air cooling structure for the track inspection vehicle according to claim 1, wherein: the rotor assembly (103) consists of a rear shaft sleeve (130), a rotating shaft (131), a rotor core (132), magnetic steel (133), a limiting block (134), a sheath (135), an end plate (136) and a middle shaft sleeve (1311), wherein the rear shaft sleeve (130) and the middle shaft sleeve (1311) are sleeved and fixed on the rotating shaft (131), the rear shaft sleeve (130) is fixed at a position corresponding to the rotary transformer assembly (104), the sheath (135) is fixed at a position corresponding to the stator (102), the sheath (135) is sleeved on the middle shaft sleeve (1311), and the end plate (136) is fixed at the end part of the sheath (135); the magnetic steel (133) is fixed on the magnetic steel (133) through gluing, the limiting block (134) is clamped in the gap of the magnetic steel (133), and the limiting block (134) is in a wedge-shaped structure and is matched with the shape of a wedge-shaped groove on the outer surface of the rotor core (132); the inner surface of the rotor core (132) is provided with a boss, the rotating shaft (131) is provided with a groove, and the shape of the boss of the rotor core (132) is matched with that of the groove of the rotating shaft (131).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010157715.3A CN111371246B (en) | 2020-03-09 | 2020-03-09 | Air-cooled structure electric drive assembly for track inspection vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010157715.3A CN111371246B (en) | 2020-03-09 | 2020-03-09 | Air-cooled structure electric drive assembly for track inspection vehicle |
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| CN111371246A CN111371246A (en) | 2020-07-03 |
| CN111371246B true CN111371246B (en) | 2021-07-09 |
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| CN202010157715.3A Active CN111371246B (en) | 2020-03-09 | 2020-03-09 | Air-cooled structure electric drive assembly for track inspection vehicle |
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|---|---|---|---|---|
| CN113511064A (en) * | 2021-05-12 | 2021-10-19 | 株洲齿轮有限责任公司 | Three-in-one integrated design method of wheel edge driving assembly |
| CN113357299B (en) * | 2021-06-23 | 2022-08-19 | 贵州航天林泉电机有限公司 | Eddy current damper with axial double-reed structure |
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| CN207573178U (en) * | 2017-11-17 | 2018-07-03 | 浙江奥耐德电气科技有限公司 | The preceding preposition deceleration variable frequency motor of output |
| CN108574366A (en) * | 2017-03-13 | 2018-09-25 | 住友重机械工业株式会社 | The assemble method of motor and pinion shaft |
| CN109889011A (en) * | 2019-04-09 | 2019-06-14 | 菏泽学院 | A kind of machine shaft revolution speed control system with safety alarm |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377301A (en) * | 2010-08-19 | 2012-03-14 | 永济新时速电机电器有限责任公司 | Asynchronous motor for rail grinding train |
| CN108574366A (en) * | 2017-03-13 | 2018-09-25 | 住友重机械工业株式会社 | The assemble method of motor and pinion shaft |
| CN207573178U (en) * | 2017-11-17 | 2018-07-03 | 浙江奥耐德电气科技有限公司 | The preceding preposition deceleration variable frequency motor of output |
| CN109889011A (en) * | 2019-04-09 | 2019-06-14 | 菏泽学院 | A kind of machine shaft revolution speed control system with safety alarm |
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| CN111371246A (en) | 2020-07-03 |
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