CN109599993B - Explosion-proof and waterproof permanent magnet alternating current servo motor - Google Patents
Explosion-proof and waterproof permanent magnet alternating current servo motor Download PDFInfo
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- CN109599993B CN109599993B CN201811242239.4A CN201811242239A CN109599993B CN 109599993 B CN109599993 B CN 109599993B CN 201811242239 A CN201811242239 A CN 201811242239A CN 109599993 B CN109599993 B CN 109599993B
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- lead
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- cosine
- permanent magnet
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- 230000005284 excitation Effects 0.000 claims description 25
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 7
- 238000004880 explosion Methods 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 238000007789 sealing Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920006335 epoxy glue Polymers 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/18—Rotary transformers
Abstract
The invention provides an explosion-proof and waterproof permanent magnet alternating current servo motor, which comprises: the motor comprises a motor shell, a stator, a rotor, a front end cover assembly and a rear end cover assembly, wherein the front end cover assembly and the rear end cover assembly are used for supporting the rotor; a rotary transformer is arranged at the second bearing and used for detecting the position of the rotor; and a housing is arranged outside the rotary transformer. The rotary transformer adopts a through lead structure, leads pass through a first lead hole on the rear end cover component, a lead channel on the inner wall of the motor shell and a second lead hole of the front end cover component in sequence, and correspondingly twins each lead of the rotary transformer at the front end cover component, so that the interference of distributed capacitance on the leads on the rotary transformer to signals can be eliminated, and the electromagnetic interference capability of the rotary transformer is enhanced.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to an explosion-proof and waterproof permanent magnet alternating current servo motor.
Background
With the progress of industrial technology and the continuous improvement of automation degree, more and more fields gradually adopt automatic control technology and equipment to realize the unattended operation of a remote system.
In the field of petroleum and natural gas pipeline transportation, explosion-proof induction motors are widely applied, but the induction motors are large in size and low in speed regulation precision, particularly, when the induction motors run at low speed, the power factor of the motors is poor due to the fact that reactive power in a power grid is absorbed, and the quality requirements of miniaturization of the size and high rotating speed control precision of the current system cannot be met.
The permanent magnet alternating current servo motor has the advantages of small volume, high power factor, small rotor loss, low heat generation, good controllability, wide speed regulation range, high working efficiency, approximate linear mechanical characteristics and the like, and gradually replaces other types of motors in the field of motor application, thereby obtaining more and more extensive application. However, the existing permanent magnet alternating current servo motor has weak electromagnetic interference resistance, explosion suppression and sealing capability, and cannot meet the field of petroleum and natural gas pipeline transportation.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an explosion-proof and waterproof permanent magnet alternating current servo motor, and solve the technical problem that the existing permanent magnet alternating current servo motor is poor in electromagnetic interference resistance, explosion-proof and sealing capabilities.
In order to solve the technical problem, the application adopts the following technical scheme:
an explosion-proof and waterproof permanent magnet alternating current servo motor comprises: the motor comprises a motor shell, a stator, a rotor, a front end cover assembly and a rear end cover assembly, wherein the front end cover assembly and the rear end cover assembly are used for supporting the rotor;
a rotary transformer is arranged at the second bearing and used for detecting the position of the rotor; and a housing is arranged outside the rotary transformer.
Furthermore, the rotary transformer comprises a plurality of leads, wherein a first threading hole arranged on the rear end cover assembly, a threading channel arranged on the inner wall of the motor shell and a second threading hole of the front end cover assembly sequentially form a lead channel, the first threading hole on the rear end cover assembly is an inlet of the lead channel, the second threading hole on the front end cover assembly is an outlet of the lead channel, and the leads are twisted at the outlet of the lead channel after passing through the lead channel.
Further, the multiple leads comprise an excitation lead, a sine lead and a cosine lead, the excitation lead comprises an excitation positive lead and an excitation negative lead, the sine lead comprises a sine positive lead and a sine negative lead, the cosine lead comprises a cosine positive lead and a cosine negative lead, the excitation positive lead and the excitation negative lead are twisted, the sine positive lead and the sine negative lead are twisted, and the cosine positive lead and the cosine negative lead are twisted.
Further, the plurality of leads are subjected to glue pouring treatment at the outlet of the lead channel.
Further, at the outlet of the lead channel, the excitation lead, the sine lead and the cosine lead are isolated.
Further, the permanent magnet alternating current servo motor is of a fractional slot structure with 10 poles and 12 slots.
Further, an oil seal device is arranged at the housing.
Compared with the prior art, the invention has the beneficial technical effects that:
(1) the rotary transformer adopts a through lead structure, leads pass through a first lead hole on the rear end cover component, a lead channel on the inner wall of the motor shell and a second lead hole of the front end cover component in sequence, and each lead of the rotary transformer is correspondingly twisted at the front end cover component, so that the interference of distributed capacitance on the leads on the rotary transformer to signals of the rotary transformer can be eliminated, and the electromagnetic interference capability of the rotary transformer is enhanced;
(2) the invention carries out integral glue filling treatment on the leading-out positions of the motor lead and the rotary transformer lead, and carries out isolation treatment on the excitation lead, the sine lead and the cosine lead at the glue filling positions, thereby meeting the use requirements of explosion suppression and sealing.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
FIG. 3(a) is a schematic view of the structure of the threading passage in the motor casing; FIG. 3(b) is a schematic cross-sectional view of FIG. 3 (a);
FIG. 4(a) is a schematic view of the structure at the outlet of the wire passage; FIG. 4(b) is a schematic cross-sectional view of FIG. 4 (a);
the numbers in the figures represent: 1-a front end cap assembly; 2-a first bearing; 3, a stator; 4, a rotor; 5-a second bearing; 6-rear end cap assembly; 7-a rotary transformer; 8, a housing; 9-oil seal device; 10-a first threading hole; 11-threading channel; 12-a second threading hole; 13-a lead; 14-lead sleeve; 15-epoxy glue; 16-motor casing.
The details of the present invention are explained in further detail below with reference to the drawings and examples.
Detailed Description
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
Example 1:
this embodiment provides an explosion-proof waterproof type permanent magnetism alternating current servo motor, as shown in fig. 1, includes: the motor comprises a motor shell 16, a stator 3, a rotor 4, a front end cover assembly 1 and a rear end cover assembly 6, wherein the front end cover assembly 1 and the rear end cover assembly 6 are used for supporting the rotor 4, and a first bearing 2 and a second bearing 5 are arranged at two ends of the rotor 4;
a rotary transformer 7 is arranged at the second bearing 5 and used for detecting the position of the rotor 4; the rotary transformer 7 is externally provided with a housing 8.
In the embodiment, a front end cover assembly 1 and a rear end cover assembly 6 of the motor provide support for reliable operation of a rotor 4, a first bearing 2 and a second bearing 5 are in interference fit with a shaft of the rotor 4, wherein the first bearing 2 and the second bearing 5 both adopt deep groove ball bearings capable of bearing axial load and radial load; the rotor 4 is composed of a rotating shaft, a magnetic yoke, magnetic steel, a balance ring and a reinforcing sleeve, the magnetic steel is high-performance rare earth magnetic steel, and a magnetic field of the magnetic steel in an air gap is in a sine wave shape by optimizing a structure and a pole arc coefficient, so that the cogging effect is reduced, and the torque fluctuation is reduced.
In addition, the rotary transformer 7 with strong environmental adaptability, wide temperature resistance range and high reliability is adopted as the position detection device of the rotor 4 in the embodiment; the housing 8 plays multiple roles of protecting, sealing, protecting and supporting the rotary transformer 7.
The rotary transformer 7 in this embodiment includes a plurality of leads 13, as shown in fig. 2, wherein a first threading hole 10 provided in the rear end cap assembly 6, a threading channel 11 provided in the inner wall of the motor casing, and a second threading hole 12 of the front end cap assembly 1 sequentially form a lead channel, the first threading hole 10 of the rear end cap assembly 6 is an inlet of the lead channel, the second threading hole 12 of the front end cap assembly 1 is an outlet of the lead channel, and the plurality of leads 13 are twisted at the outlet of the lead channel after passing through the lead channel.
The multiple leads 13 include an excitation lead, a sine lead and a cosine lead, the excitation lead includes an excitation positive lead and an excitation negative lead, the sine lead includes a sine positive lead and a sine negative lead, the cosine lead includes a cosine positive lead and a cosine negative lead, the excitation positive lead and the excitation negative lead are twisted, the sine positive lead and the sine negative lead are twisted, and the cosine positive lead and the cosine negative lead are twisted.
In this way, the rotary transformer 7 adopts a through lead-through lead structure, the lead 13 passes through the first lead hole 10 of the rear end cover assembly 6, the lead channel 11 on the inner wall of the motor casing 16 and the second lead hole 10 of the front end cover assembly 1 in sequence, and the twisted-pair processing is performed on each lead of the rotary transformer 7 at the front end cover assembly 1, wherein the excitation positive lead and the excitation negative lead are twisted-pair together, the sine positive lead and the sine negative lead are twisted-pair together, the cosine positive lead and the cosine negative lead are twisted-pair together, the interference of distributed capacitance on the leads to the rotary signal is eliminated through the twisted-pair leads, and the electromagnetic interference capability of the rotary transformer is enhanced. Fig. 3(a), (b) are schematic structural views of the threading channel 16 in the motor casing 16, wherein the threading channel 16 is multiple and distributed around the inner wall of the motor casing.
The plurality of leads 13 are subjected to glue pouring treatment at the outlet of the lead channel. The motor lead and the rotary transformer lead are subjected to glue filling treatment at the outlet of the lead channel, and the excitation lead, the sine lead and the cosine lead are subjected to isolation treatment at the glue filling position, so that the explosion-proof and sealing use requirements are met.
And at the outlet of the lead channel, carrying out isolation treatment on the excitation lead, the sine lead and the cosine lead.
Like fig. 4(a) for the lead wire carry out the schematic diagram after the encapsulating at lead wire passageway exit, this embodiment adopts the epoxy glue to carry out the encapsulating, and the lead wire at first needs to fix through the lead wire cover before the encapsulating, then carries out the encapsulating, can make like this keep apart between the lead wire, and fig. 4(b) is the section schematic diagram after the lead wire carries out the encapsulating at lead wire passageway exit.
The permanent magnet alternating current servo motor in the embodiment is of a 10-pole 12-slot fractional slot structure, so that the motor has the characteristics of high winding coefficient, good sine degree of counter potential waveform, small positioning torque and no unilateral magnetic pull force, the cogging torque of the motor is reduced, the low-speed running stability is improved, and the control precision of the motor is improved.
In the embodiment, an oil seal device 9 is arranged at the position of a housing 8 and is used for carrying out dynamic sealing on the motor, and the static sealing of the motor adopts the measure of coating a flat-pad-free sealant on the assembly joint surface.
Claims (6)
1. The utility model provides an explosion-proof waterproof type permanent magnetism AC servo motor which characterized in that includes: the motor comprises a motor shell (16), a stator (3), a rotor (4), a front end cover assembly (1) and a rear end cover assembly (6) which are used for supporting the rotor (4), wherein a first bearing (2) and a second bearing (5) are arranged at two ends of the rotor (4);
a rotary transformer (7) is arranged at the second bearing (5) and used for detecting the position of the rotor (4); a housing (8) is arranged outside the rotary transformer (7);
resolver (7) include many lead wires (13), wherein set up first through wires hole (10) on rear end cap subassembly (6), set up threading passageway (11) at motor casing (16) inner wall and second through wires hole (12) of front end cap subassembly (1) constitute the lead wire passageway in proper order, and first through wires hole (10) on rear end cap subassembly (6) are the lead wire passageway entry, and second through wires hole (12) of front end cap subassembly (1) are the lead wire passageway export, many lead wires (13) pass behind the lead wire passageway and twist two in lead wire passageway exit.
2. The explosion-proof and waterproof permanent magnet ac servo motor according to claim 1, wherein the plurality of leads (13) include an excitation lead, a sine lead, and a cosine lead, the excitation lead includes an excitation positive lead and an excitation negative lead, the sine lead includes a sine positive lead and a sine negative lead, and the cosine lead includes a cosine positive lead and a cosine negative lead, wherein the excitation positive lead is twisted with the excitation negative lead, the sine positive lead and the sine negative lead are twisted, and the cosine positive lead and the cosine negative lead are twisted.
3. Explosion and water proof permanent magnet ac servomotor according to claim 2, wherein the plurality of leads (13) are glue filled at the outlet of the lead channel.
4. The explosion-proof and waterproof permanent magnet alternating current servo motor according to claim 3, wherein an excitation lead, a sine lead and a cosine lead are isolated at the outlet of the lead channel.
5. The explosion-proof and waterproof permanent magnet alternating current servo motor according to claim 1, wherein the permanent magnet alternating current servo motor is of a fractional slot structure with 10 poles and 12 slots.
6. Explosion and water proof permanent magnet ac servo motor according to claim 1, characterized in that an oil seal (9) is provided at the housing (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242239.4A CN109599993B (en) | 2018-10-24 | 2018-10-24 | Explosion-proof and waterproof permanent magnet alternating current servo motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242239.4A CN109599993B (en) | 2018-10-24 | 2018-10-24 | Explosion-proof and waterproof permanent magnet alternating current servo motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109599993A CN109599993A (en) | 2019-04-09 |
| CN109599993B true CN109599993B (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811242239.4A Active CN109599993B (en) | 2018-10-24 | 2018-10-24 | Explosion-proof and waterproof permanent magnet alternating current servo motor |
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| Country | Link |
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| CN (1) | CN109599993B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110784026A (en) * | 2019-10-22 | 2020-02-11 | 西安航天动力测控技术研究所 | Split-charging submersible motor capable of generating power for operation |
| CN111585400B (en) * | 2020-06-24 | 2022-10-04 | Abb瑞士股份有限公司 | Servo motor and assembling method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3614593A (en) * | 1970-05-06 | 1971-10-19 | Motorola Inc | Rotary transformer for alternator |
| CN2428911Y (en) * | 2000-06-12 | 2001-05-02 | 朱向东 | Long-service-life multi-model type permanent magnet brushless servo electric motor |
| CN207705934U (en) * | 2017-11-27 | 2018-08-07 | 中钢集团安徽天源科技股份有限公司 | A kind of novel electric vehicle waterproof permanent magnetic synchronous motor |
| CN108054893A (en) * | 2017-11-30 | 2018-05-18 | 上海航天控制技术研究所 | A kind of permanent magnet synchronous servo motor structure of Curve guide impeller |
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2018
- 2018-10-24 CN CN201811242239.4A patent/CN109599993B/en active Active
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| CN109599993A (en) | 2019-04-09 |
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Effective date of registration: 20231009 Address after: 100000 22 Chaoyangmen North Street, Chaoyang District, Beijing. Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: National Petroleum and natural gas pipeline network Group Co.,Ltd. Patentee after: XI'AN AEROSPACE PROPULSION INSTITUTE Address before: 100020 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: XI'AN AEROSPACE PROPULSION INSTITUTE |
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