CN118694086B - Speed-reducing permanent magnet synchronous frequency conversion all-in-one machine structure - Google Patents
Speed-reducing permanent magnet synchronous frequency conversion all-in-one machine structure Download PDFInfo
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- CN118694086B CN118694086B CN202411170073.5A CN202411170073A CN118694086B CN 118694086 B CN118694086 B CN 118694086B CN 202411170073 A CN202411170073 A CN 202411170073A CN 118694086 B CN118694086 B CN 118694086B
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- 238000004804 winding Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 66
- 238000001816 cooling Methods 0.000 claims description 64
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- 230000007704 transition Effects 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 24
- 239000011229 interlayer Substances 0.000 claims description 11
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Classifications
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
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- 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
- H02K11/0094—Structural association with other electrical or electronic devices
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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
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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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
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
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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
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The application relates to a speed-reducing permanent magnet synchronous variable frequency integrated machine structure, which comprises a permanent magnet synchronous motor module, a gear reduction box module and a frequency converter module, wherein the gear reduction box module is in transmission connection with the driving end of the permanent magnet synchronous motor module; the permanent magnet synchronous motor module comprises a base and a generator body, wherein the generator body is fixedly arranged in an inner cavity of the base, the generator body comprises a stator component and a rotor component, the stator component is provided with windings, and the stator component comprises a plurality of stator core segment blocks. The technical scheme of the application solves the problems that the transmission chain of an asynchronous speed reduction system is long, the efficiency is low, the direct-drive permanent magnet synchronous motor is large in size, and the space limitation can not be met by integrating the direct-drive permanent magnet synchronous motor with a frequency converter.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a speed-reducing permanent magnet synchronous variable frequency integrated machine structure which is suitable for underground use of coal mines and has strict limitation on space.
Background
The underground tunnel of the coal mine is narrow, the size requirement on the motor is strict, particularly the center height and the axial length, according to the motor theory, under the same conditions of power, rotating speed, voltage, cooling mode and the like, the underground tunnel of the coal mine can be designed according to thick and short types or slender types, and the two modes are closely related to the center height and the axial length; meanwhile, underground transportation equipment such as a scraper machine, a belt conveyor, a transfer conveyor, a crusher and the like are all ultra-low-speed equipment, a transmission system is usually in the form of an asynchronous motor and a reduction gearbox, and the speed of the asynchronous motor is usually 1000 or 1500 revolutions, so that the reduction gearbox is relatively large in speed ratio, long in transmission chain and relatively low in system efficiency; the permanent magnet synchronous motor has high efficiency, the volume can be reduced by 1-2 centers compared with an asynchronous motor, a reduction gearbox is not needed, but the control is needed by combining a frequency converter, and in actual use, the direct-drive low-speed permanent magnet synchronous motor omits the reduction gearbox, and is still not suitable for the limitation of equipment and space due to more pole pairs, thick and short motor and larger center;
Further, with the development of power electronics technology, frequency converters are widely applied in driving systems, and the frequency converters are usually independently placed in an electric control room, but the investment of construction is increased; meanwhile, the distance between the frequency converter and the motor is far, so that the electric energy loss and interference of the circuit are increased. The direct-drive low-speed permanent magnet motor is large in volume, and if the frequency converter and the motor are integrated together, the frequency converter and the motor occupy larger space, so that the problem that the practitioner needs to solve is solved by effectively combining the direct-drive low-speed permanent magnet synchronous motor and the frequency converter to adapt to the use of narrow space of a coal mine underground roadway.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a speed-reducing permanent magnet synchronous variable frequency integrated machine structure which comprises a permanent magnet synchronous motor module, a gear reduction box module and a frequency converter module,
The gear reduction box module is in transmission connection with the driving end of the permanent magnet synchronous motor module, the frequency converter module is in signal connection with the permanent magnet synchronous motor module, the frequency converter module is fixedly arranged on the permanent magnet synchronous motor module, and the permanent magnet synchronous motor module, the gear reduction box module and the frequency converter module are integrated into an integrated structure;
the permanent magnet synchronous motor module comprises a base and a generator body, wherein the generator body is fixedly arranged in an inner cavity of the base, the generator body comprises a stator member and a rotor member, the stator member is provided with windings, the stator member comprises a plurality of stator core segment blocks, the stator core segment blocks are arranged in an array mode along the circumferential direction to form a whole, the windings can be arranged on the stator core segment blocks in a winding mode, the rotor member comprises a rotating shaft and a rotor bracket fixedly connected with the rotating shaft, the generator body further comprises a plurality of magnetic pole core segment blocks, and the magnetic pole core segment blocks are arranged in an array mode along the circumferential direction to form a whole and are fixedly arranged on the periphery of the rotor bracket;
The gear reduction box module is a planetary reduction box and adopts primary gear transmission, the speed ratio is 5-6, the gear reduction box module is provided with a water-cooling sleeve, the reduction box module and the driving end of the permanent magnet synchronous motor module share the water-cooling sleeve, and the reduction box module is fixedly arranged at the driving end of the permanent magnet synchronous motor module through the water-cooling sleeve;
The frequency converter module is fixedly arranged on the machine base and comprises an upper frequency converter box body and a lower frequency converter box body, wherein the upper frequency converter box body and the lower frequency converter box body are arranged up and down, the upper frequency converter box body is fixedly arranged above the machine base, the lower frequency converter box body is fixedly arranged on the side edge of the machine base, and the upper frequency converter box body and the lower frequency converter box body are arranged on the permanent magnet synchronous motor module in an L shape;
the permanent magnet synchronous motor module further comprises an annular water cooling assembly, the annular water cooling assembly is arranged on the periphery of the generator body in a coating mode, the generator body can be fixedly connected with the machine base through the annular water cooling assembly, the annular water cooling assembly can cool the permanent magnet synchronous motor module, and the water cooling assembly can cool the driving end of the permanent magnet synchronous motor module and the gear reduction box module together.
Preferably, the section of each stator core segment block is arc-shaped, one side of each stator core segment block facing the rotating shaft is provided with a rack matched with the winding, and the other side of each stator core segment block is provided with a cooling arc surface matched with the annular water cooling assembly.
Preferably, each magnetic pole core segment block comprises a stress base plate, a pull rod and a magnetic pole core block, wherein the pull rod penetrates through the magnetic pole core block to form a whole, the stress base plate is attached to the peripheral surface of the rotor support, and penetrates through the rotor support through bolts to be in threaded fit with the pull rod and the stress base plate, and the magnetic pole core segment block is fixedly arranged on the rotor support.
Preferably, the annular water cooling assembly comprises a front sealing plate, a rear sealing plate, an inner sleeve and an outer sleeve, water pouring strips are uniformly arranged on the peripheral cylinder wall of the inner sleeve at intervals along the circumferential direction, a liquid passing port is formed between two adjacent water pouring strips, the outer sleeve is fixedly arranged between the front sealing plate and the rear sealing plate and coats the inner sleeve, a cooling cavity for liquid to pass through is formed among the front sealing plate, the rear sealing plate, the inner sleeve, the outer sleeve and the water pouring strips, and at least two annular water cooling assembly liquid inlets and outlets communicated with the cooling cavity are formed in the plate body of the rear sealing plate.
Preferably, the permanent magnet synchronous motor module is in spline connection with the gear reduction box module to realize transmission fit, the water cooling sleeve member of the gear reduction box module comprises a front end cover, a transition cover and a rear end cover from front to back, the front end cover is provided with a front end cover flange ring which is assembled and connected with the transition cover, the front end cover flange ring is provided with an annular liquid passing cavity, and the front end cover flange ring is provided with at least one front end cover liquid inlet which is communicated with the annular liquid passing cavity;
The transition cover is provided with at least one transition cover liquid through hole, and each transition cover liquid through hole penetrates through the transition cover from front to back and can be communicated with the annular liquid through cavity;
the center of the cover body of the rear end cover is provided with a rear end cover matching hole for the driving end of the permanent magnet synchronous motor module to pass through, the periphery of the rear end cover, which is positioned at the rear end cover matching hole, is provided with an annular liquid passing interlayer cavity, one side surface of the rear end cover, which faces the transition cover, is at least provided with a rear end cover liquid inlet communicated with the liquid passing interlayer cavity, the side end surface of the cover body of the rear end cover is also provided with at least one rear end cover liquid outlet communicated with the annular liquid passing interlayer cavity, the rear end cover liquid inlet is communicated with the rear end cover liquid outlet in a cross manner, and the gear reduction box module is fixedly arranged at the driving end of the permanent magnet synchronous motor module through the rear end cover.
Preferably, the cylinder bodies of the inner sleeve and the outer sleeve are respectively provided with a motor wire passing opening avoiding the cooling cavity, the motor wire passing openings of the inner sleeve and the outer sleeve are respectively overlapped up and down, and the permanent magnet synchronous motor module is connected with the frequency converter module through the motor wire passing opening.
Preferably, the lower end face of the upper box body of the frequency converter is provided with an upper box body lead opening, and the side end face of the lower box body of the frequency converter is provided with a lower box body lead opening.
Preferably, the non-driving end of the permanent magnet synchronous motor module is further provided with a brake module matched with the non-driving end, the end part of the rotating shaft, which is positioned at the non-driving end, is fixedly provided with a spline block I, the brake module is provided with a housing covering the non-driving end of the permanent magnet synchronous motor module and a brake cavity communicated with the housing, the brake module is positioned in the brake cavity and is provided with a driving cylinder body, an L-shaped push-pull block and a brake pin, the upper end and the lower end of the L-shaped push-pull block are respectively hinged with the driving end of the driving cylinder body and the rear end of the brake pin, the block body of the L-shaped push-pull block is also hinged with the inner wall of the brake cavity, and the inner cavity of the housing is positioned at the spline block I and is further provided with a limit guide block matched with the brake pin.
Preferably, the rear end cover is provided with a first flange ring at the position of the rear end cover matching hole, the driving end of the permanent magnet synchronous motor module is provided with a second flange ring at the position of the rotor bracket, and the rear end cover is fixedly arranged at the driving end of the permanent magnet synchronous motor module through the matching of the first flange ring and the second flange ring.
Preferably, a spline block II in transmission connection with the gear reduction box module is fixedly arranged at the end part of the rotating shaft positioned at the driving end, and a bearing matched with the spline block II is fixedly arranged in the ring body of the rotor bracket positioned in the flange ring II.
By means of the scheme, the invention has at least the following advantages:
the technical scheme of the application solves the problems that an asynchronous deceleration system has lengthy transmission chain, low efficiency and large volume of a direct-drive permanent magnet synchronous motor, and cannot be integrated with a frequency converter to meet space limitation, and specifically comprises the following steps:
1. the integrated machine of the technical scheme of the application is formed by combining a permanent magnet synchronous motor, a gear reduction box and a frequency converter;
2. The gear reduction box module adopts primary gear transmission, the speed ratio is 5-6, compared with a secondary/tertiary planetary gear reduction box, the structure is compact, the transmission efficiency is high, the gear reduction box is arranged at the driving end of the permanent magnet synchronous motor module through modularized design, the power input side of the gear reduction box module is in spline fit with the driving end of the permanent magnet synchronous motor module, in order to further shorten the whole axial space, the gear reduction box module and the permanent magnet synchronous motor module adopt a scheme of sharing an end cover and a bearing, the gear reduction box module can synchronously cool the output end of the permanent magnet synchronous motor module by utilizing the characteristic of sharing the end cover while adopting water cooling measures for cooling, and the reliability of the integrated machine in use is further improved;
3. The motor lead wire of the permanent magnet synchronous motor module can be directly led into the frequency converter module, a junction box is omitted between the permanent magnet synchronous motor module and the frequency converter module, the frequency converter module is integrally designed in a side L-shaped mode, the volume is compact, meanwhile, the frequency converter module can be fixedly arranged on the side edge of the permanent magnet synchronous motor module, the axial space of the integrated machine is greatly reduced, and the frequency converter module is quite beneficial to the use of a narrow roadway under a mine;
4. The brake module is also integrated with the permanent magnet synchronous motor module, and can perform locking action through the brake module when the special situation needs to ensure the locking motor to ensure safety.
5. In conclusion, the technical scheme of the application can realize high integration, has small occupied space, convenient installation and maintenance and high system efficiency, and is very suitable for being used in narrow space of underground roadway of coal mine.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate a certain embodiment of the present invention and should not be considered as limiting the scope, and that other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of a structure of a deceleration permanent magnet synchronous variable frequency all-in-one machine of the application;
FIG. 2 is a schematic diagram of the three-dimensional relationship between the housing and the generator body of the present application;
FIG. 3 is a schematic view of yet another perspective relationship between a housing and a generator body according to the present application;
FIG. 4 is a schematic perspective view of the upper case of the frequency converter of the present application;
FIG. 5 is a schematic diagram of a three-dimensional structure of a lower case of the frequency converter of the present application;
FIG. 6 is a schematic perspective view of the drive end side of the generator body of the present application;
FIG. 7 is a schematic perspective view of the non-drive end side of the generator body of the present application;
FIG. 8 is a schematic view showing the three-dimensional structure relationship among the rear sealing plate, the inner sleeve, the water pouring strip and the liquid passing port;
Fig. 9 is a schematic perspective view of a stator core segment block in accordance with the present application;
FIG. 10 is a schematic view of the perspective structural relationship between the rotor support and stator core segment blocks and tie rods of the present application;
FIG. 11 is a schematic diagram of the three-dimensional structural relationship between the force bearing pad, tie rod and pole core piece of the present application;
FIG. 12 is a schematic perspective view of a gear reduction box module of the present application;
FIG. 13 is a schematic perspective view of the front end cap of the present application;
FIG. 14 is a schematic view of the three-dimensional structural relationship between the front end cover flange ring, the annular liquid passing cavity and the front end cover liquid inlet;
FIG. 15 is a schematic perspective view of a transition lid of the present application;
FIG. 16 is a schematic view of the three-dimensional structure relationship among the rear end cap mating holes, the annular liquid passing interlayer cavity, the rear end cap liquid inlet holes and the rear end cap liquid outlet;
FIG. 17 is a schematic perspective view of a brake module of the present application;
FIG. 18 is a schematic view of the three-dimensional relationship between the spline block I, drive cylinder, L-shaped push-pull block and brake pin of the present application.
In the figure: the device comprises a permanent magnet synchronous motor module, a2 gear reduction box module, a 3 frequency converter module, a 4 base, a 5 stator core segment block, a 6 rotating shaft, a 7 rotor support, a 8 magnetic pole core segment block, a 9 frequency converter upper box body, a 10 frequency converter lower box body, a 11 rack, a 12 cooling circular arc surface, a 13 stress backing plate, a 14 pull rod, a 15 magnetic pole core block, a 16 front sealing plate, a 17 rear sealing plate, a 18 inner sleeve, a 19 outer sleeve, a 20 pouring strip, a 21 liquid passing opening, a 22 annular water cooling assembly inlet, a 23 front end cover, a 24 transition cover, a 25 rear end cover, a 26 front end cover flange ring, a 27 annular liquid passing cavity, a 28 front end cover inlet, a 29 transition cover liquid passing hole, a 30 rear end cover matching hole, a 31 annular liquid passing interlayer cavity, a 32 rear end cover inlet, a 33 rear end cover outlet, a 34 motor wire passing opening, a 35 upper box body wire opening, a 36 lower box body wire opening, a 37 brake module, a 38 spline block I, a housing 39, a 40 brake cavity, a 41 driving cylinder body, a 42L-shaped push-pull block, 43, a 44 brake block, a 45 guide ring, a 46, a two-flange ring, a 48 and a two-shaped bearing flange ring.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Referring to fig. 1 to 18, a deceleration permanent magnet synchronous variable frequency integrated machine structure according to a preferred embodiment of the present invention includes a permanent magnet synchronous motor module 1, a gear reduction box module 2 and a frequency converter module 3,
The gear reduction box module 2 is in transmission connection with the driving end of the permanent magnet synchronous motor module 1, the frequency converter module 3 is in signal connection with the permanent magnet synchronous motor module 1, the frequency converter module 3 is fixedly arranged on the permanent magnet synchronous motor module 1, and the permanent magnet synchronous motor module 1, the gear reduction box module 2 and the frequency converter module 3 are integrated into a whole structure;
The permanent magnet synchronous motor module 1 comprises a base 4 and a generator body, wherein the generator body is fixedly arranged in an inner cavity of the base 4, the generator body comprises a stator member and a rotor member, the stator member comprises a plurality of stator core segment blocks 5, the stator core segment blocks 5 are arranged in an array mode along the circumferential direction to form a whole, the winding can be arranged on the stator core segment blocks 5 in a winding mode, the rotor member comprises a rotating shaft 6 and a rotor bracket 7 fixedly connected with the rotating shaft 6, the generator body further comprises a plurality of magnetic pole core segment blocks 8, and the magnetic pole core segment blocks 8 are arranged in an array mode along the circumferential direction to form a whole and are fixedly arranged on the periphery of the rotor bracket 7;
the stator component and the rotor component can form a generator body, so that the normal operation of the permanent magnet synchronous motor module 1 is ensured.
The gear reduction box module 2 is a planetary reduction box, primary gear transmission is adopted, the speed ratio is 5-6, the gear reduction box module 2 is provided with a water-cooling sleeve, the reduction box module 2 and the driving end of the permanent magnet synchronous motor module 1 share the water-cooling sleeve, and the reduction box module 2 is fixedly arranged at the driving end of the permanent magnet synchronous motor module 1 through the water-cooling sleeve;
The water-cooling external member can cool down cooling to gear reduction box module 2, can also cool down the cooling to the drive end department of PMSM module 1 simultaneously, has both realized the cooling purpose, improves the service reliability of all-in-one in abominable operational environment, can also compress whole volume simultaneously, improves the adaptability when narrow region uses.
The frequency converter module 3 is fixedly arranged on the machine base 4, the frequency converter module 3 comprises a frequency converter upper box body 9 and a frequency converter lower box body 10, the frequency converter upper box body 9 and the frequency converter lower box body 10 are arranged up and down, the frequency converter upper box body 9 is fixedly arranged above the machine base 4, the frequency converter lower box body 10 is fixedly arranged on the side edge of the machine base 4, and the frequency converter upper box body 9 and the frequency converter lower box body 10 are arranged on the permanent magnet synchronous motor module 1 in an L shape;
The frequency converter module 3 is changed into the upper and lower split structure by the large-scale box structure of tradition, can set up the frequency conversion core unit in the box 9 on the frequency converter simultaneously, can set up units such as reactor and electric capacity in the box 10 under the frequency converter, and frequency converter module 3 direct fixed installs on frame 4, has saved the terminal box, has reduced the axial space of motor by a wide margin, adapts to the work to narrow tunnel in the pit more, and it is worth mentioning that the symmetry designs about the generator body, just so through the installation of frequency converter module 3, just can adapt to the objective demand of scraper conveyor aircraft nose, tail symmetry installation.
The permanent magnet synchronous motor module 1 further comprises an annular water cooling assembly, the annular water cooling assembly is arranged on the periphery of the generator body in a coating mode, the generator body can be fixedly connected with the machine base 4 through the annular water cooling assembly, the annular water cooling assembly can cool the permanent magnet synchronous motor module 1, and the water cooling assembly can cool the driving end of the permanent magnet synchronous motor module 1 and the gear reduction box module 2 together.
Preferably, the section of each stator core segment block 5 is arc-shaped, one side of each stator core segment block 5 facing the rotating shaft 6 is provided with a rack 11 matched with a winding, and the other side of each stator core segment block 5 is provided with a cooling arc surface 12 matched with an annular water cooling assembly.
Each stator core segment block 5 can be in direct contact with the inner sleeve 18 through the cooling circular arc surface 12, so that the contact area is increased, and the cooling efficiency is improved.
Preferably, each magnetic pole core segment block 8 comprises a stress base plate 13, a pull rod 14 and a magnetic pole core block 15, wherein the pull rod 14 penetrates through the magnetic pole core block 15 to form a whole, the stress base plate 13 is attached to the peripheral surface of the rotor support 7, the stress base plate 13 and the pull rod 14 are in threaded fit through bolts penetrating through the rotor support 7, and the magnetic pole core segment block 8 is fixedly arranged on the rotor support 7.
Preferably, the annular water cooling assembly comprises a front sealing plate 16, a rear sealing plate 17, an inner sleeve 18 and an outer sleeve 19, water pouring strips 20 are uniformly arranged on the outer circumferential cylinder wall of the inner sleeve 18 at intervals along the circumferential direction, a liquid passing port 21 is arranged between two adjacent water pouring strips 20, the outer sleeve 19 is fixedly arranged between the front sealing plate 16 and the rear sealing plate 17 and covers the inner sleeve 18, a cooling cavity for passing liquid is formed among the front sealing plate 16, the rear sealing plate 17, the inner sleeve 18, the outer sleeve 19 and the water pouring strips 20, and at least two annular water cooling assembly liquid inlet and outlet ports 22 communicated with the cooling cavity are formed in the plate body of the rear sealing plate 17.
The plurality of pouring strips 20 can form an axial water channel in the cooling cavity and are matched with the annular water cooling assembly liquid inlet and outlet 22, so that the reciprocating circulation of cooling liquid can be continuously realized between the inner sleeve 18 and the outer sleeve 19, the generator body is coated by the annular water cooling assembly, the generator body can be cooled in real time and uninterruptedly, and the generator body can still reliably operate under a severe working environment.
Preferably, the permanent magnet synchronous motor module 1 is in spline connection with the gear reduction box module 2 to realize transmission fit, the water cooling sleeve part of the gear reduction box module 2 comprises a front end cover 23, a transition cover 24 and a rear end cover 25 from front to back, the front end cover 23 is provided with a front end cover flange ring 26 which is in assembled connection with the transition cover 24, the front end cover flange ring 26 is provided with an annular liquid passing cavity 27, and the front end cover flange ring 26 is provided with at least one front end cover liquid inlet 28 which is communicated with the annular liquid passing cavity 27;
the transition cover 24 is provided with at least one transition cover liquid through hole 29, and each transition cover liquid through hole 29 penetrates through the transition cover 24 from front to back and can be communicated with the annular liquid through cavity 27;
The center of the cover body of the rear end cover 25 is provided with a rear end cover matching hole 30 for the driving end of the permanent magnet synchronous motor module 1 to pass through, the periphery of the rear end cover 25, which is positioned at the rear end cover matching hole 30, is provided with an annular liquid passing interlayer cavity 31, one side surface of the rear end cover 25, which faces the transition cover 24, is provided with at least one rear end cover liquid inlet 32 communicated with the transition cover liquid passing hole 29, the side end surface of the cover body of the rear end cover 25 is also provided with at least one rear end cover liquid outlet 33 communicated with the annular liquid passing interlayer cavity 31, the rear end cover liquid inlet 32 is communicated with the rear end cover liquid outlet 33 in a cross manner, and the gear reduction box module 2 is fixedly arranged at the driving end of the permanent magnet synchronous motor module 1 through the rear end cover 25.
When the water cooling sleeve works, cooling liquid can enter the annular liquid passing cavity 27 from the liquid inlet 28 of the front end cover, then flows through the transition cover 24 to the rear end cover 25 through the liquid passing hole 29 of the transition cover, enters the annular liquid passing interlayer cavity 31 through the liquid inlet 32 of the rear end cover, and finally is discharged through the liquid outlet 33 of the rear end cover to form a circulation.
Preferably, the cylinder bodies of the inner sleeve 18 and the outer sleeve 19 are respectively provided with a motor wire passing port 34 avoiding the cooling cavity, the motor wire passing ports 34 of the inner sleeve 18 and the outer sleeve 19 are respectively arranged in an up-down overlapping mode, and the permanent magnet synchronous motor module 1 is in signal connection with the frequency converter module 3 through the motor wire passing ports 34.
Preferably, the lower end face of the upper box 9 of the frequency converter is provided with an upper box lead opening 35, and the side end face of the lower box 10 of the frequency converter is provided with a lower box lead opening 36.
Preferably, the non-driving end of the permanent magnet synchronous motor module 1 is also provided with a brake module 37 matched with the non-driving end, the end part of the rotating shaft 6, which is positioned at the non-driving end, is fixedly provided with a spline block I38, the brake module 37 is provided with a housing 39 which covers the non-driving end of the permanent magnet synchronous motor module 1 and a brake cavity 40 communicated with the housing, a driving cylinder 41, an L-shaped push-pull block 42 and a brake pin 43 are arranged in the brake cavity 40, the upper end and the lower end of the L-shaped push-pull block 42 are respectively hinged with the driving end of the driving cylinder 41 and the rear end of the brake pin 43, the block body of the L-shaped push-pull block 42 is also hinged with the inner wall of the brake cavity 40, and the inner cavity of the housing 39 is positioned at the spline block I38 and is also provided with a limit guide block 44 matched with the brake pin 43.
In actual use, for example, when a scraper chain of the scraper is broken, the action restriction can be performed on the rotating shaft 6 through the brake module 37 to avoid continuous rotation, specifically, the remote controller of the external control device is used for inching control, the electromagnetic valve and the proximity switch are matched, the cylinder 41 is driven by the hydraulic system to start, the L-shaped push-pull block 42 is pulled down, at the moment, the L-shaped push-pull block 42 can drive the brake pin 43 to be inserted into a limit hole formed in the front end surface of the spline block 38, the action restriction is realized, at the moment, the remote controller is used for inching control, and the broken chain part is sent to a designated position, so that the chain tightening function operation can be completed;
Further, as can be seen from fig. 3, the non-driving end of the permanent magnet synchronous motor module 1 is of a concave structure, so that the structure is not only convenient for installing the brake module 37, but also can save axial space and improve power/torque density of the motor, meanwhile, when in actual use, a position sensor (rotary transformer) can be additionally arranged in the concave, when adopting a closed-loop control mode, double closed-loop vector control of a current loop and a speed loop is realized through speed and position detection, dynamic response capability and reliability of the system are improved, and finally, an open-loop and closed-loop double control mode is realized.
Preferably, the rear end cover 25 is provided with a first flange ring 45 at the position of the rear end cover matching hole 30, the driving end of the permanent magnet synchronous motor module 1 is provided with a second flange ring 46 at the position of the rotor bracket 7, and the rear end cover 25 is fixedly arranged at the driving end of the permanent magnet synchronous motor module 1 through the matching of the first flange ring 45 and the second flange ring 46.
Preferably, a second spline block 47 in transmission connection with the gear reduction box module 2 is fixedly arranged at the end part of the rotary shaft 6 positioned at the driving end, and a bearing 48 matched with the second spline block 47 is fixedly arranged in the ring body of the second flange ring 46 of the rotor bracket 7.
Through the structure, the rear end cover 25 is directly fixedly arranged at the front end part of the rotor bracket 7, the annular liquid passing interlayer cavity 31 of the rear end cover 25 can simultaneously cool the spline block two 47 and the bearing 48, the cooling effect can be enhanced, the axial space is shortened, and in actual use, according to the linear speed of a shaft penetrating part, the oil pressure of a gear box, the oil temperature, the bearing load and other boundary conditions, a fluororubber rotary oil seal with high temperature resistance, pressure resistance and wear resistance can be adopted, so that the gear box is prevented from penetrating into the motor through the shaft.
In summary, the technical scheme of the application not only realizes the structure of the integrated machine, but also saves the use space, and the permanent magnet synchronous motor module 1, the gear reduction box module 2 and the frequency converter module 3 are integrally arranged and respectively provided with independent cavities, thereby being convenient for later maintenance operation.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a synchronous frequency conversion all-in-one structure of speed reduction formula permanent magnetism, includes permanent magnet synchronous motor module (1), gear reduction box module (2) and converter module (3), its characterized in that:
The gear reduction box module (2) is in transmission connection with the driving end of the permanent magnet synchronous motor module (1), the frequency converter module (3) is in signal connection with the permanent magnet synchronous motor module (1), the frequency converter module (3) is fixedly arranged on the permanent magnet synchronous motor module (1), and the permanent magnet synchronous motor module (1), the gear reduction box module (2) and the frequency converter module (3) are integrated into an integrated structure;
The permanent magnet synchronous motor module (1) comprises a base (4) and a generator body, wherein the generator body is fixedly arranged in an inner cavity of the base (4), the generator body comprises a stator component and a rotor component, the stator component comprises a plurality of stator core segment blocks (5), the stator core segment blocks (5) are arranged in an array mode in the circumferential direction to form a whole, the winding can be arranged on the stator core segment blocks (5) in a winding mode, the rotor component comprises a rotating shaft (6) and a rotor support (7) fixedly connected with the rotating shaft (6), the generator body further comprises a plurality of magnetic pole core segment blocks (8), and the magnetic pole core segment blocks (8) are arranged in an array mode in the circumferential direction to form a whole and are fixedly arranged on the periphery of the rotor support (7);
The gear reduction box module (2) is a planetary reduction box, primary gear transmission is adopted, the speed ratio is 5-6, the gear reduction box module (2) is provided with a water-cooling sleeve, the reduction box module (2) and the driving end of the permanent magnet synchronous motor module (1) share the water-cooling sleeve, and the reduction box module (2) is fixedly arranged at the driving end of the permanent magnet synchronous motor module (1) through the water-cooling sleeve;
The frequency converter module (3) is fixedly arranged on the machine base (4), the frequency converter module (3) comprises a frequency converter upper box body (9) and a frequency converter lower box body (10), the frequency converter upper box body (9) and the frequency converter lower box body (10) are arranged up and down, the frequency converter upper box body (9) is fixedly arranged above the machine base (4), the frequency converter lower box body (10) is fixedly arranged on the side edge of the machine base (4), and the frequency converter upper box body (9) and the frequency converter lower box body (10) are arranged on the permanent magnet synchronous motor module (1) in an L shape;
the permanent magnet synchronous motor module (1) further comprises an annular water cooling assembly, the annular water cooling assembly is arranged on the periphery of the generator body in a coating mode, the generator body can be fixedly connected with the base (4) through the annular water cooling assembly, the annular water cooling assembly can cool the permanent magnet synchronous motor module (1), and the water cooling sleeve can cool the driving end of the permanent magnet synchronous motor module (1) and the gear reduction box module (2) together;
the permanent magnet synchronous motor module (1) is in spline connection with the gear reduction box module (2) to realize transmission fit, a water cooling sleeve member provided by the gear reduction box module (2) comprises a front end cover (23), a transition cover (24) and a rear end cover (25) from front to back, the front end cover (23) is provided with a front end cover flange ring (26) assembled and connected with the transition cover (24), the front end cover flange ring (26) is provided with an annular liquid passing cavity (27), and the front end cover flange ring (26) is provided with at least one front end cover liquid inlet (28) communicated with the annular liquid passing cavity (27);
The transition cover (24) is provided with at least one transition cover liquid passing hole (29), and each transition cover liquid passing hole (29) penetrates through the transition cover (24) from front to back and can be communicated with the annular liquid passing cavity (27);
The center of the cover body of the rear end cover (25) is provided with a rear end cover matching hole (30) for the driving end of the permanent magnet synchronous motor module (1) to pass through, the periphery of the rear end cover (25) positioned in the rear end cover matching hole (30) is provided with an annular liquid passing interlayer cavity (31), one side surface of the rear end cover (25) facing the transition cover (24) is provided with at least one rear end cover liquid inlet (32) communicated with the liquid passing hole (29) of the transition cover, the side end surface of the cover body of the rear end cover (25) is also provided with at least one rear end cover liquid outlet (33) communicated with the annular liquid passing interlayer cavity (31), the rear end cover liquid inlet (32) is communicated with the rear end cover liquid outlet (33) in a cross mode, and the gear reduction box module (2) is fixedly arranged at the driving end of the permanent magnet synchronous motor module (1) through the rear end cover (25).
2. The speed-reducing permanent magnet synchronous variable frequency all-in-one machine structure according to claim 1, wherein: the section of each stator core segment block (5) is arc-shaped, one side of each stator core segment block (5) facing the rotating shaft (6) is provided with a rack (11) matched with the winding, and the other side of each stator core segment block (5) is provided with a cooling arc surface (12) matched with the annular water cooling assembly.
3. The speed-reducing permanent magnet synchronous variable frequency all-in-one machine structure according to claim 1, wherein: each magnetic pole core segment block (8) comprises a stress base plate (13), a pull rod (14) and a magnetic pole core block (15), wherein the pull rod (14) penetrates through the magnetic pole core block (15) to form a whole, the stress base plate (13) is attached to the peripheral surface of the rotor support (7), the stress base plate (13) penetrates through the rotor support (7) through bolts to be in threaded fit with the pull rod (14), and the magnetic pole core segment block (8) is fixedly arranged on the rotor support (7).
4. A deceleration permanent magnet synchronous variable frequency all-in-one machine structure according to claim 1, 2 or 3, characterized in that: the annular water cooling assembly comprises a front sealing plate (16), a rear sealing plate (17), an inner sleeve (18) and an outer sleeve (19), water pouring strips (20) are uniformly arranged on the peripheral cylinder wall of the inner sleeve (18) at intervals along the circumferential direction, a liquid passing port (21) is formed between two adjacent water pouring strips (20), the outer sleeve (19) is fixedly arranged between the front sealing plate (16) and the rear sealing plate (17) and covers the inner sleeve (18), a cooling cavity for liquid to pass through is formed among the front sealing plate (16), the rear sealing plate (17), the inner sleeve (18), the outer sleeve (19) and the water pouring strips (20), and at least two annular water cooling assembly liquid inlets (22) communicated with the cooling cavity are formed in the plate body of the rear sealing plate (17).
5. The speed-reducing permanent magnet synchronous variable frequency all-in-one machine structure according to claim 4, wherein: the cylinder bodies of the inner sleeve (18) and the outer sleeve (19) are respectively provided with a motor wire passing opening (34) avoiding the cooling cavity, the motor wire passing openings (34) of the inner sleeve (18) and the outer sleeve (19) are arranged in an up-down overlapping mode, and the permanent magnet synchronous motor module (1) is connected with the frequency converter module (3) through the motor wire passing opening (34) in a signal mode.
6. The speed-reducing permanent magnet synchronous variable frequency all-in-one machine structure according to claim 1, wherein: an upper box lead opening (35) is formed in the lower end face of the box body of the upper box body (9) of the frequency converter, and a lower box lead opening (36) is formed in the side end face of the lower box body (10) of the frequency converter.
7. The speed-reducing permanent magnet synchronous variable frequency all-in-one machine structure according to claim 1, wherein: the non-driving end of the permanent magnet synchronous motor module (1) is further provided with a brake module (37) matched with the non-driving end, a spline block I (38) is fixedly arranged at the end part of the rotating shaft (6) positioned at the non-driving end, the brake module (37) is provided with a housing (39) covering the non-driving end of the permanent magnet synchronous motor module (1) and a brake cavity (40) communicated with the housing, the brake module (37) is positioned in the brake cavity (40) and is provided with a driving cylinder body (41), an L-shaped push-pull block (42) and a brake pin (43), the upper end and the lower end of the L-shaped push-pull block (42) are respectively hinged with the driving end of the driving cylinder body (41) and the rear end of the brake pin (43), the block body of the L-shaped push-pull block (42) is also hinged with the inner wall of the brake cavity (40), and the inner cavity of the housing (39) is positioned at the spline block I (38) and is further provided with a limit guide block (44) matched with the brake pin (43).
8. The speed-reducing permanent magnet synchronous variable frequency all-in-one machine structure according to claim 1, wherein: the rear end cover (25) is located at the rear end cover matching hole (30) and provided with a first flange ring (45), the driving end of the permanent magnet synchronous motor module (1) is located at the rotor bracket (7) and provided with a second flange ring (46), and the rear end cover (25) is fixedly arranged at the driving end of the permanent magnet synchronous motor module (1) through matching of the first flange ring (45) and the second flange ring (46).
9. The structure of a deceleration permanent magnet synchronous variable frequency integrated machine according to claim 1 or 8, wherein: the end part of the rotating shaft (6) positioned at the driving end is fixedly provided with a second spline block (47) in transmission connection with the gear reduction box module (2), and the rotor bracket (7) is positioned in the ring body of the second flange ring (46) and is fixedly provided with a bearing (48) matched with the second spline block (47).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707874A (en) * | 2019-11-12 | 2020-01-17 | 日照东方电机有限公司 | Water-cooling integrated small-volume permanent magnet intelligent driving system |
| CN216672791U (en) * | 2021-12-30 | 2022-06-03 | 山东能源重型装备制造集团有限责任公司 | Speed reduction and variable frequency drive all-in-one machine for scraper |
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| US8896166B2 (en) * | 2010-02-19 | 2014-11-25 | Magna Powertrain Ag | Electric drive unit |
| DE102010008584A1 (en) * | 2010-02-19 | 2011-08-25 | Magna Powertrain Ag & Co Kg | Electric drive unit |
| JP6608304B2 (en) * | 2016-02-17 | 2019-11-20 | 株式会社ミツバ | Motor and motor with reduction gear |
| CN111976469B (en) * | 2020-08-27 | 2021-07-27 | 安徽维德电源有限公司 | A liquid-cooled electric forklift integrated power system and forklift |
| CN112242781A (en) * | 2020-09-22 | 2021-01-19 | 青岛中加特电气股份有限公司 | Frequency conversion all-in-one machine |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707874A (en) * | 2019-11-12 | 2020-01-17 | 日照东方电机有限公司 | Water-cooling integrated small-volume permanent magnet intelligent driving system |
| CN216672791U (en) * | 2021-12-30 | 2022-06-03 | 山东能源重型装备制造集团有限责任公司 | Speed reduction and variable frequency drive all-in-one machine for scraper |
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Denomination of invention: A deceleration type permanent magnet synchronous variable frequency integrated machine structure Granted publication date: 20241119 Pledgee: Industrial and Commercial Bank of China Changzhou New Area Branch Pledgor: JIANGSU ZHUERKAOG MOTOR ENERGY SAVING TECHNOLOGY CO.,LTD. Registration number: Y2024980058411 |