CN110829714A - Mining explosion-proof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor - Google Patents
Mining explosion-proof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor Download PDFInfo
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- CN110829714A CN110829714A CN201910791689.7A CN201910791689A CN110829714A CN 110829714 A CN110829714 A CN 110829714A CN 201910791689 A CN201910791689 A CN 201910791689A CN 110829714 A CN110829714 A CN 110829714A
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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
- H02K7/1004—Structural association with clutches, brakes, gears, pulleys or mechanical starters with pulleys
- H02K7/1012—Machine arranged inside the pulley
- H02K7/1016—Machine of the outer rotor type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/12—Asynchronous induction motors for multi-phase current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/32—Structural association of asynchronous induction motors with auxiliary mechanical devices, e.g. with clutches or brakes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model provides a water-cooling type three-phase asynchronous motor is directly driven to mining flame-proof type external rotor low-speed, belong to motor technical field, including stator part and rotating part, the stator part is quiescent condition, which comprises a stator, the terminal box, the support, the key, the mount, the lock sleeve, holding screw, retaining ring and labyrinth ring, the stator includes the stator body, backup pad and motor shaft, rotating part includes the rotor, the front bearing enclosing cover, the rear bearing enclosing cover, the front end housing, the rear end cap, preceding inner cup, back inner cup, left bearing and right bearing, the front bearing enclosing cover, the front end housing, preceding inner cup, join in marriage the front end at the rotor with left bearing, the rear bearing enclosing cover, the rear end housing, back inner cup and right bearing are joined in marriage the rear end at. The invention solves the matching problem of the driving device of the belt conveyor on the working surface of the underground coal mine, reduces the equipment acquisition cost, is safe and reliable to use, reduces the energy consumption, improves the efficiency and has good practical popularization value.
Description
The technical field is as follows:
the invention relates to the technical field of mining explosion-proof type three-phase asynchronous motors, in particular to a mining explosion-proof type outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor.
Background art:
at present, a belt conveyor for a working surface of a coal mine underground adopts a roller driving type, and a driving device of the belt conveyor is that a motor drives a driving roller to rotate through a hydraulic coupler and a speed reducer. The speed reducer mechanism in the general belt conveyor driving device is complex, the manufacturing cost is high, the working performance is unstable, the efficiency is low, and the maintenance cost is high. The low-speed direct drive motor is developed and developed, so that the electromechanical equipment of the underground working surface transmission system of the coal mine can save a complex transmission mechanism, reduce the floor area, shorten the length of a transmission chain and improve the transmission efficiency and reliability. The low-speed direct-drive water-cooling type outer rotor motor can replace a belt conveyor roller, a hydraulic coupler and a speed reducer are omitted, and the belt conveyor is directly driven to operate.
The invention content is as follows:
in view of this, it is necessary to provide a mining explosion-proof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor.
A mining explosion-proof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor comprises a stator part and a rotating part;
the stator part is in a static state and comprises a stator, a junction box, a support, a key, a fixing frame, a locking sleeve, a set screw, a check ring and a labyrinth ring, wherein the stator comprises a stator body, a supporting plate and a motor shaft, the stator body consists of a stator coil, a stator end plate, a stator punching sheet, an inner water jacket assembly, an outer water jacket assembly, a stator lead-out wire, a interlayer pad, a slot wedge, a polyester sheath glass fiber rope and polysulfone felt to form a double-layer winding type stator winding type, the inner water jacket assembly and the outer water jacket assembly consist of an inner water jacket, an outer water jacket and a flange, the inner water jacket and the outer water jacket are assembled together in a hot assembly mode and then are welded with the flange; the fixing frame is fixedly connected with the belt rack, a key is fixedly arranged on the fixing frame, the key is matched with a key groove on a motor shaft, the motor is fixed on the belt rack, labyrinth rings at two ends of the motor are fixed on an inner ring of the bearing, a locking sleeve, a set screw and a check ring are matched and arranged at two ends of the motor shaft, and the support is fixed on the left end face of the motor shaft and connected with the junction box assembly;
the rotating part comprises a rotor, a front bearing outer cover, a rear bearing outer cover, a front end cover, a rear end cover, a front inner cover, a rear inner cover, a left bearing and a right bearing, wherein the front bearing outer cover, the front end cover, the front inner cover and the left bearing are assembled at the front end of the rotor, and the rear bearing outer cover, the rear end cover, the rear inner cover and the right bearing are assembled at the rear end of the rotor.
Preferably, the holes for preventing bulging are uniformly distributed and processed on the excircle of the outer water jacket and are welded and fixed with the excircle ribs of the outer water jacket.
Preferably, the rotor comprises rotor seat cover, rotor subassembly, drum subassembly, and the circle processing axial rotor core location size and radial cooperation size in the rotor seat cover, and the cooperation size of excircle processing and the interior circle of drum subassembly, the drum subassembly comprises cylinder and rubber tape.
Preferably, the roller assembly is a roller and the rubber belt is fixed by gluing, the rotor seat sleeve is assembled with the roller assembly, the rotor assembly is composed of an end ring, cage bars, a rotor core and rotor positioning screws, the rotor core is composed of rotor punching sheets, ribs and rotor end plates, the rotor punching sheets are stacked according to the consistent direction of the positioning groove positions, the rotor end plates are placed at the left end and the right end, ribs at the left end and the right end of the punching sheet excircle buckle sheet groove are welded and fixed with the end plates, the cage bars are inserted into the punching sheet grooves in the rotor assembly, the positioning screws are installed at the left end and the right end, the end ring is installed, the positions of the two ends are adjusted according to the size, and then the cage bars and the end.
Preferably, the outer rabbets of the front end cover and the rear end cover are matched with the inner rabbets of the roller assembly to form a matched joint surface; the front end cover and the rear end cover are combined with the front inner cover and the rear inner cover into a plane explosion-proof combination surface.
Preferably, the front inner cover, the rear inner cover and the motor shaft are combined into a cylindrical explosion-proof joint surface.
Preferably, the bearing of the motor shaft is a self-aligning roller bearing.
The belt conveyor has the advantages and beneficial effects that the rotor roller of the motor and the rubber belt are fixed into a whole to replace the roller of the belt conveyor to drag the belt of the belt conveyor to operate, the rotating speed of the motor is equal to the belt speed of the belt conveyor, the belt conveyor operates stably and reliably, the motor is driven by special frequency conversion, and the motor is connected with the chain wheel of the belt conveyor to drive the belt conveyor to operate, so that the working performance and efficiency of a system are greatly improved, and the belt conveyor has better popularization and application prospects.
Description of the drawings:
in order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram of a partial section structure of a mining explosion-proof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor.
In the figure: the structure comprises a junction box 1, a support 2, a key 3, a fixing frame 4, a locking sleeve 5, a set screw 6, a retainer ring 7, a labyrinth ring 8, a bearing outer cover 9, a self-aligning roller bearing 10, a front end cover 11, a front inner cover 12, a roller assembly 13, a stator 14, a rotor 15, a rear inner cover 16, a rear end cover 17, a water inlet 18 and a water outlet 19.
The specific implementation mode is as follows:
in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "front" and "back" and the like indicate orientations and positional relationships based on orientations and positional relationships shown in the drawings or orientations and positional relationships where the products of the present invention are conventionally placed in use, and are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
The present invention provides the following specific examples.
Referring to fig. 1, the mining explosion-proof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor comprises a stator part and a rotating part;
the stator part is in a static state and comprises a stator 14, a junction box 1, a support 2, a key 3, a fixing frame 4, a locking sleeve 5, a set screw 6, a check ring 7 and a labyrinth ring 8, wherein the stator 14 comprises a stator body, a support plate and a motor shaft, the stator body comprises a stator coil, a stator end plate, a stator punching sheet, an inner water jacket assembly, an outer water jacket assembly, a stator outgoing line, a interlaminar pad, a slot wedge, a polyester sheath glass yarn rope and a polysulfone felt to form a double-layer winding type stator winding type, the inner water jacket assembly and the outer water jacket assembly comprise an inner water jacket, an outer water jacket and a flange, the inner water jacket and the outer water jacket are assembled together in a hot-assembling mode and then are welded with the flange; the fixing frame 4 is fixedly connected with a belt rack, a key 3 is fixedly arranged on the fixing frame 4, the key 3 is matched with a key groove on a motor shaft, the motor is fixed on the belt rack, labyrinth rings 8 at two ends of the motor are fixed on an inner ring of a bearing, a locking sleeve 5, a set screw 6 and a retainer ring 7 are matched and arranged at two ends of the motor shaft, and the support 2 is fixed on the left end face of the motor shaft and connected with a junction box 1 component;
the rotating part comprises a rotor 15, a front bearing outer cover 9, a rear bearing outer cover 9, a front end cover 11, a rear end cover 17, a front inner cover 12, a rear inner cover 16, a left bearing and a right bearing, wherein the front bearing outer cover 9, the front end cover 11, the front inner cover 12 and the left bearing are assembled at the front end of the rotor 15, and the rear bearing outer cover 9, the rear end cover 17, the rear inner cover 16 and the right bearing are assembled at the rear end of the rotor 15.
The outer circle of the outer water jacket is uniformly distributed with holes for preventing bulging and is welded and fixed with the outer circle ribs of the outer water jacket. Rotor 15 comprises rotor seat cover, rotor subassembly, drum subassembly 13, and the interior round processing of rotor seat cover is to rotor core location size and radial cooperation size, and the cooperation size of excircle processing and the interior round of drum subassembly 13, and drum subassembly 13 comprises cylinder and rubber tape.
The roller assembly 13 is by the cylinder, the rubber band adopts the glue to bond fixedly, the rotor seat cover assembles together with roller assembly 13, the rotor assembly is by the end ring, the cage strip, the rotor core, rotor set screw is made up, the rotor core is formed by rotor punching, muscle, rotor end plate, the rotor punching is according to the unanimous stack of locating slot position direction, the rotor end plate is placed at left and right sides, punching excircle cramp groove installation muscle and end plate welded fastening at left and right sides, the rotor assembly is to insert the cage strip in the punching groove, left and right sides both ends installation set screw, install the end ring again, both ends are according to the well position of size adjustment, then carry on cage strip and end ring silver-copper welding and make its rotor 15.
The outer rabbets of the front end cover 11 and the rear end cover 17 are matched with the inner rabbets of the roller component 13 to form a matched joint surface; the front end cover 11 and the rear end cover 17, the front inner cover 12 and the rear inner cover 16 are combined into a plane explosion-proof combination surface. The front inner cover 12, the rear inner cover 16 and the motor shaft form a cylindrical explosion-proof combination surface. The bearing of the motor shaft is a self-aligning roller bearing 10.
The stator body of the invention is composed of a stator coil, a stator end plate, a stator punching sheet, an inner water jacket assembly welding, an outer water jacket assembly welding, a stator lead-out wire, a interlayer pad, a slot wedge, a polyester sheath glass fiber rope, a polysulfone felt and the like, the stator winding is double-layer lap wound, the magnetic slot wedge is adopted, the stator coil adopts a 200-grade polyimide film-fluorine 46 composite film coated flat copper wire, the slot positions of the stator end plate and the stator punching sheet are just opposite to the slot position of the traditional motor, and the slot opening of the stator is arranged on the edge of. The inner water jacket assembly and the outer water jacket assembly are formed by an inner water jacket, an outer water jacket and a flange, the inner water jacket and the outer water jacket are assembled together in a hot-fitting mode and then welded with the flange, in order to prevent the inner water jacket and the outer water jacket from channeling to influence a heat dissipation effect due to errors in machining production and deformation generated after the inner water jacket and the outer water jacket are hot-fitted, the outer circle of the outer water jacket is uniformly distributed and machined to prevent bulging holes and outer water jacket circular ribs from being welded and fixed into a whole, and the water channeling phenomenon caused by uneven assembly gaps between the inner water jacket and the outer water jacket is avoided. And after the inner water jacket assembly and the outer water jacket assembly are welded, a cooling water pressure test with the water pressure of 4.5Mpa is carried out for 5 minutes, and all welding seams are not allowed to have water leakage and meet the requirement on mechanical strength. And after the inner water jacket assembly and the outer water jacket assembly complete the hydrostatic test, the water inlet 18 and the water outlet 19 plates are welded and fixed according to the positions required by the process. The size of an inner spigot of the placing support plate is processed according to the size of a process drawing, key grooves with the same size as the stator punching sheet and the stator end plate are processed on the outer circle, and the key 3 is convenient to insert and press-fit the stator body. The supporting plate has the effect that the excircle of the supporting plate is placed at the inner rabbet on the right side of the water jacket assembly welding part, and the inner circle and the shaft excircle are matched, welded and fixed to form a closed plane, so that the water gap plate is convenient to place. The shaft adopts round steel 40CrNiMO, and the welding of evenly distributed with the width of cloth board has constituteed the support axle on axle iron core keeps off the excircle, uses the horizontal center direction of axle as the benchmark, processes the cooperation size of excircle and interior outer water jacket subassembly welding inner circle. The left end face of the motor shaft is processed into a stator lead and a screw hole of the fixed support 2, and a horizontal datum line is processed to form a 60-degree inclined hole close to the shaft iron core stopper to be communicated with the end face threading hole, so that the stator lead can be led out conveniently. The left end face of the shaft is processed with horizontal and radial water channel light holes and screw holes G3/4 of the water inlet and outlet 19, so that water flows in from the water inlet 18, circulates for a circle through the water deflecting type water channel of the water inlet plate inner and outer water jacket assemblies and flows out from the water outlet 19. The heat source of the motor is a stator core, a stator 14 and a rotor winding, wherein the heat of the stator core is transferred to the inner water jacket assembly and the outer water jacket assembly; the heat of the stator winding is firstly transferred to the stator core and then transferred to the inner water jacket assembly and the outer water jacket assembly. Finally, the heat is taken away through the circulating water flowing in and out. The stator 14 has good water cooling heat dissipation effect, which can improve the heat dissipation effect of the motor winding end, and at the same time, the heat generated to the rotating shell is improved by the heat dissipation of the stator core. The temperature of the water inlet and outlet bearing passing through the right end of the shaft is reduced, so that the service life of the bearing is prolonged, and the running reliability of the bearing is enhanced. The two-end keys 3 and the fixing frame 4 are arranged at the positions, and the fixing frame 4 is fixedly connected with the belt rack, namely the motor is fixed on the belt rack. The labyrinth rings 8 at both ends are used for fixing the bearing inner ring and sealing. The locking sleeve 5 and the set screw 6 are used for starting the retainer ring 7. The support 2 is fixedly connected with the left end face of the fixed shaft and the junction box 1 component.
The inner circle of the rotor seat sleeve is processed into the positioning size and the radial matching size of the axial rotor core, and the outer circle is processed into the matching size with the inner circle of the roller assembly 13. The roller assembly 13 is composed of a roller and a rubber belt. The roller is made by rolling Q345A steel plate, and the inner circle of the roller is matched with the outer circle of the rotor seat sleeve in size. The roller assembly 13 is fixed by the roller and the rubber belt by adopting glue, wherein the rubber belt can resist flame and temperature of 160 degrees, and the rotor seat cover is assembled together with the rubber belt.
The rotor core is composed of rotor punching sheets, ribs and rotor end plates. The rotor punching sheets are stacked according to the consistent position direction of the positioning grooves, the rotor end plates are arranged at the left end and the right end, and the ribs at the left end and the right end of the excircle cramp groove of the punching sheet are welded and fixed with the end plates. The rotor component inserts the cage bar into the punching sheet groove, the left end and the right end are provided with the positioning screws, the end ring is arranged, the positions of the two ends are adjusted according to the size, and then the cage bar and the end ring are welded by silver and copper to manufacture the rotor 15. As shown in fig. 1, the explosion-proof junction surface a is formed by matching the outer seam allowances of the left end cover and the right end cover with the inner seam allowances of the rotor roller; the front end cover 11 and the rear end cover 17 are combined with the front inner cover 12 and the rear inner cover 16 into a plane explosion-proof combination surface A, and the front inner cover 12 and the rear inner cover 16 are combined with the shaft into a cylindrical explosion-proof combination surface A. The joints matched with the end cover of the motor, the rotor component, the outer cover and the end cover, and the support 2 and the shaft end surface are sealed by O-shaped sealing rings, so that external water and sundries are prevented from entering the inner cavity of the motor. The motor adopts the self-aligning roller bearing 10, has strong radial load bearing capacity and completely meets the operating requirements of working conditions. The performance parameters of the motor are rated power: 315Kw, rated voltage: 1140v, rated rotation speed 90r/min, rated frequency: 13.3Hz, pole number: 20, efficiency: 83%, power factor: 0.75, maximum torque multiple: 2.2, starting torque multiple: 1.5, insulation rating: level H, protection level IP55, cooling: the water cooling and continuous working mode is a low-speed direct-drive explosion-proof three-phase asynchronous motor for driving an outer rotor of a belt conveyor. The invention solves the matching problem of the driving device of the belt conveyor on the underground working surface of the coal mine. Belt feeder drive arrangement adopts the external rotor low-speed to directly drive the motor, and 15 fungible cylinders of rotor install motor shaft both ends mount 4 in the belt feeder frame to hydraulic coupler and reduction gear among the drive arrangement have been cancelled, by the operation of motor direct drive belt feeder, have reduced the mechanism volume, have reduced equipment acquisition cost, and use safe and reliable, reduced the energy consumption, make efficiency obtain improving, have fine practical spreading value.
Claims (7)
1. A mining flame-proof type outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor is characterized in that: the mining explosion-proof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor comprises a stator part and a rotating part;
the stator part is in a static state and comprises a stator, a junction box, a support, a key, a fixing frame, a locking sleeve, a set screw, a check ring and a labyrinth ring, wherein the stator comprises a stator body, a supporting plate and a motor shaft, the stator body consists of a stator coil, a stator end plate, a stator punching sheet, an inner water jacket assembly, an outer water jacket assembly, a stator lead-out wire, a interlayer pad, a slot wedge, a polyester sheath glass fiber rope and polysulfone felt to form a double-layer winding type stator winding type, the inner water jacket assembly and the outer water jacket assembly consist of an inner water jacket, an outer water jacket and a flange, the inner water jacket and the outer water jacket are assembled together in a hot assembly mode and then are welded with the flange; the fixing frame is fixedly connected with the belt rack, a key is fixedly arranged on the fixing frame, the key is matched with a key groove on a motor shaft, the motor is fixed on the belt rack, labyrinth rings at two ends of the motor are fixed on an inner ring of the bearing, a locking sleeve, a set screw and a check ring are matched and arranged at two ends of the motor shaft, and the support is fixed on the left end face of the motor shaft and connected with the junction box assembly;
the rotating part comprises a rotor, a front bearing outer cover, a rear bearing outer cover, a front end cover, a rear end cover, a front inner cover, a rear inner cover, a left bearing and a right bearing, wherein the front bearing outer cover, the front end cover, the front inner cover and the left bearing are assembled at the front end of the rotor, and the rear bearing outer cover, the rear end cover, the rear inner cover and the right bearing are assembled at the rear end of the rotor.
2. The mining flameproof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor as claimed in claim 1, characterized in that: the outer circle of the outer water jacket is uniformly distributed with holes for preventing bulging and is welded and fixed with the outer circle ribs of the outer water jacket.
3. The mining flameproof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor as claimed in claim 2, characterized in that: the rotor comprises rotor seat cover, rotor subassembly, drum subassembly, and the interior round processing axial rotor core location size of rotor seat cover and radial cooperation size, excircle processing and the interior round cooperation size of drum subassembly, and the drum subassembly comprises cylinder and rubber tape.
4. The mining flameproof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor as claimed in claim 3, characterized in that: the rotor assembly is composed of an end ring, cage bars, a rotor core and rotor positioning screws, the rotor core is composed of rotor punching sheets, ribs and rotor end plates, the rotor punching sheets are stacked according to the position direction of a positioning groove, the rotor end plates are placed at the left end and the right end, the ribs at the left end and the right end of the punching sheet are welded and fixed with the end plates through punching sheet excircle buckle sheet grooves, the cage bars are inserted into the punching sheet grooves in the rotor assembly, the positioning screws are installed at the left end and the right end, the end ring is installed, the positions of the two ends are adjusted according to the size, and then the cage bars and the end ring are welded through silver copper to form the rotor.
5. The mining flameproof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor as claimed in claim 4, characterized in that: the outer rabbets of the front end cover and the rear end cover are matched with the inner rabbets of the roller component to form a matched joint surface; the front end cover and the rear end cover are combined with the front inner cover and the rear inner cover into a plane explosion-proof combination surface.
6. The mining flameproof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor as claimed in claim 5, characterized in that: the front inner cover, the rear inner cover and the motor shaft are combined into a cylindrical explosion-proof joint surface.
7. The mining flameproof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor as claimed in claim 1, characterized in that: the bearing of the motor shaft is a self-aligning roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910791689.7A CN110829714A (en) | 2019-08-26 | 2019-08-26 | Mining explosion-proof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910791689.7A CN110829714A (en) | 2019-08-26 | 2019-08-26 | Mining explosion-proof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor |
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| CN110829714A true CN110829714A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910791689.7A Pending CN110829714A (en) | 2019-08-26 | 2019-08-26 | Mining explosion-proof outer rotor low-speed direct-drive water-cooling type three-phase asynchronous motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114204757A (en) * | 2021-11-26 | 2022-03-18 | 宁夏西北骏马电机制造股份有限公司 | Manufacturing method of explosion-proof variable-frequency low-speed direct-drive water-cooling type three-phase asynchronous motor |
-
2019
- 2019-08-26 CN CN201910791689.7A patent/CN110829714A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114204757A (en) * | 2021-11-26 | 2022-03-18 | 宁夏西北骏马电机制造股份有限公司 | Manufacturing method of explosion-proof variable-frequency low-speed direct-drive water-cooling type three-phase asynchronous motor |
| CN114204757B (en) * | 2021-11-26 | 2023-11-24 | 宁夏西北骏马电机制造股份有限公司 | Manufacturing method of flameproof variable-frequency low-speed direct-drive water-cooled three-phase asynchronous motor |
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