CN204202894U - A kind of Novel traction machine performance testing device - Google Patents
A kind of Novel traction machine performance testing device Download PDFInfo
- Publication number
- CN204202894U CN204202894U CN201420659677.1U CN201420659677U CN204202894U CN 204202894 U CN204202894 U CN 204202894U CN 201420659677 U CN201420659677 U CN 201420659677U CN 204202894 U CN204202894 U CN 204202894U
- Authority
- CN
- China
- Prior art keywords
- traction machine
- frequency converter
- vector
- tested
- control frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 230000008878 coupling Effects 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 claims abstract description 12
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- VEMKTZHHVJILDY-UHFFFAOYSA-N resmethrin Chemical compound CC1(C)C(C=C(C)C)C1C(=O)OCC1=COC(CC=2C=CC=CC=2)=C1 VEMKTZHHVJILDY-UHFFFAOYSA-N 0.000 claims description 3
- 230000010349 pulsation Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 8
- 238000013100 final test Methods 0.000 description 4
- 238000011056 performance test Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The utility model discloses a kind of Novel traction machine performance testing device, it comprises tested traction machine, former dynamic traction machine, brake controller, the first vector-control frequency converter, the second vector-control frequency converter, transformer, inverter, current/voltage transmitter, shaft coupling, moment of inertia device, torque sensor, the first scrambler, the second scrambler and AC network, wherein, connected by shaft coupling between the traction sheave of described tested traction machine and the traction sheave of former dynamic traction machine, moment of inertia device and torque sensor are all fixedly connected on shaft coupling; Described first scrambler and the second scrambler are individually fixed on the traction sheave of tested traction machine and the traction sheave of former dynamic traction machine; Described brake controller is connected on the detent of tested traction machine.The utility model completes the test of tested traction machine overload, temperature rise, back-emf, the test of pulsation moment and the performances such as detent, and the performance for traction machine provides comprehensive and foundation accurately.
Description
Technical field
The utility model relates to traction machine technical field, the proving installation of the performances such as particularly synchro traction machine overload, temperature rise, back-emf, the test of pulsation moment and detent.
Background technology
Motor test is the important step to quality of motors and technical feature comprehensive evaluation, is the important procedure of motor manufacturing and production.At present, known electric machine testing device all adopts electric dynamometer, mainly contain direct current dynamometer and exchange measurement of power, general employing Non-follow control test process, is measured and record the various parameters of motor in operational process by various sensor, signal instrument.Known direct current dynamometer and ac dynamometer can be traction machine and provide different loads and rotating speed, thus can complete the load overload test of traction machine, temperature rise test, back-emf test.But, known dynamometer machine cannot meet the requirement of traction machine pulsation moment test for load that traction machine provides, simultaneously general in the brake performance test uncontrollable brake operation state of dynamometer machine, thus cause measuring process to rely on manual control, there is the undesirable elements such as artificial subjective judgement in measurement result.Known dynamometer machine can not be comprehensive to the performance test of traction machine for this reason.
Utility model content
In order to solve the problem, the utility model patent provides a kind of Novel traction machine performance testing device, it conveniently can complete the test of the load overload of traction machine, temperature rise, back-emf, also the test of pulsation moment and the brake performance test of traction machine can be completed easily, can control accurately the traction machine of different size and provide accurate load for it, can measure pulsation moment and the friction force size of component size and brake performance index accurately, the performance for traction machine provides comprehensive and foundation accurately.
For realizing above object, the technical scheme that the utility model is taked is:
A kind of Novel traction machine performance testing device, it comprises tested traction machine, former dynamic traction machine, brake controller, first vector-control frequency converter, second vector-control frequency converter, transformer, inverter, current/voltage transmitter, shaft coupling, moment of inertia device, torque sensor, first scrambler, second scrambler and AC network, wherein, described AC network passes through transformer successively, first vector-control frequency converter is connected to the input end of motor of tested traction machine, and this AC network is also connected to the input end of motor of former dynamic traction machine by the second vector-control frequency converter, described current/voltage transmitter is connected between the input end of motor of the first vector-control frequency converter and tested traction machine, connected by shaft coupling between the traction sheave of described tested traction machine and the traction sheave of former dynamic traction machine, moment of inertia device and torque sensor are all fixedly connected on shaft coupling, described first scrambler and the second scrambler are individually fixed on the traction sheave of tested traction machine and the traction sheave of former dynamic traction machine, and the output terminal of the first scrambler and the second scrambler is connected to the feedback end of the first vector-control frequency converter and the second vector-control frequency converter respectively, the DC master row of described second vector-control frequency converter is connected to AC network by inverter, described brake controller is connected on the detent of tested traction machine.
Described first vector-control frequency converter and the second vector-control frequency converter are four-quadrant frequency converter.
Described Novel traction machine performance testing device comprises an inlet wire short circuit isolating switch further, and described inlet wire short circuit isolating switch is connected between the input end of motor of current/voltage transmitter and tested traction machine.
Described current/voltage transmitter comprises current transducer and voltage transmitter, and described current transducer and voltage transmitter are all connected between the input end of motor of the first vector-control frequency converter and tested traction machine.
Described Novel traction machine performance testing device comprises the first power switch protection device and second source switching protective device further; described first power switch protection device is connected between AC network and transformer, and described second source switching protective device is connected between the input end of AC network and the second vector-control frequency converter.
Described brake controller comprises air switch Q23, transformer T3, contactor KM2, contactor KM3, contactor KM4, electric capacity C1, rectifier RECT, wherein, the input end of described rectifier RECT is connected to AC power by contactor KM2, transformer T3 and air switch Q23 successively, two ends after described contactor KM3 and electric capacity C1 crossfire are connected to two output terminals of rectifier RECT respectively, are connected to the two ends of capacitor C1 after the detent series connection of described contactor KM4 and tested traction machine.
Respectively and meet a resistance R1 and resistance R2, the detent two ends of described tested traction machine also meet a resistance R3 at the two ends of described contactor KM4.
Described rectifier RECT is full-wave rectification bridge.
The utility model compared with prior art, its beneficial effect is: the coaxial connection of tested traction machine and former dynamic traction machine is realized synchronism output by the utility model, using former dynamic traction machine as the synchronized loading of tested traction machine, tested traction machine overload can be completed, temperature rise, back-emf, the test of the performances such as the test of pulsation moment and detent, thus can control accurately the traction machine of different size and provide accurate load for it, the friction force size of pulsation moment and component size and brake performance index can be measured accurately, performance for traction machine provides comprehensive and foundation accurately.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of a kind of Novel traction machine performance testing device of the utility model;
Fig. 2 is the circuit theory diagrams of brake controller.
Reference numeral: 1, tested traction machine; 2, former dynamic traction machine; 3, current/voltage transmitter; 4, vector-control frequency converter; 5, transformer; 6, power switch protection device; 7, vector-control frequency converter; 8, power switch protection device; 9, AC network; 10, scrambler; 11, scrambler; 12, brake controller; 13, inlet wire short circuit isolating switch; 14, moment of inertia device; 15, torque sensor; 16, inverter.
Embodiment
Below in conjunction with the drawings and specific embodiments, content of the present utility model is described in further details.
Embodiment
Please refer to shown in Fig. 1; a kind of Novel traction machine performance testing device, it comprises tested traction machine 1, former dynamic traction machine 2, current/voltage transmitter 3, vector-control frequency converter 4, transformer 5, power switch protection device 6, vector-control frequency converter 7, power switch protection device 8, AC network 9, scrambler 10, scrambler 11, brake controller 12, inlet wire short circuit isolating switch 13, moment of inertia device 14, torque sensor 15, shaft coupling (not shown) and inverter 16.Wherein, AC network 9 successively by power switch protection device 6, transformer 5, vector-control frequency converter 4, be connected to the input end of motor of tested traction machine 1 with current/voltage transmitter 3; and this AC network 9 is also connected to the input end of motor of former dynamic traction machine 2 successively by power switch protection device 8, vector-control frequency converter 7; vector-control frequency converter 4 and vector-control frequency converter 7 all adopt four-quadrant frequency converter, tested traction machine 1 and former dynamic traction machine 2 can be made all can be in respectively rotate forward electronic, reverse electronic, rotate forward generating and generate and forward electric four duties.On connecting line between the input end of motor that inlet wire short circuit isolating switch 13 is arranged at current/voltage transmitter 3 and tested traction machine 1.Connected by shaft coupling between the traction sheave of tested traction machine 1 and the traction sheave of former dynamic traction machine 2, moment of inertia device 14 and torque sensor 15 are all fixedly connected on shaft coupling, the position of the two does not limit, and moment of inertia device 14 is for increasing the moment of inertia of tested traction machine in torque test of pulsing.Scrambler 10 and scrambler 11 are individually fixed on the traction sheave of tested traction machine 1 and the traction sheave of former dynamic traction machine 2, and the output terminal of the output terminal of scrambler 10 and scrambler 11 is connected to the feedback end of vector-control frequency converter 4 and the feedback end of vector-control frequency converter 7 respectively; The DC master row of vector-control frequency converter 7 is back to AC network 9 by inverter 16; Brake controller 12 is connected on the detent of tested traction machine 1.
Current/voltage transmitter 3 comprises current transducer and voltage transmitter, and current transducer and voltage transmitter are all connected between vector-control frequency converter 4 and inlet wire short circuit isolating switch 13, and the priority position of the two does not limit.
Its test process is as follows:
1, load overload test, temperature rise test: first AC network 9 gives power switch protection device 6 and power switch protection device 8 power transmission respectively; according to the output of the rated voltage adjustment transformer 5 of different tested traction machine 1; make tested traction machine 1 be in rotating forward motoring condition, former dynamic traction machine 2 is in reversion generating state.Secondly on-test, tested traction machine 1 is driven to rotate and form velocity close-loop control by scrambler 10 by vector-control frequency converter 4, simultaneously by former dynamic traction machine 2 for the Power output of tested traction machine 1 provides load, and the mechanical energy of tested traction machine 1 is absorbed by former dynamic traction machine 2, the mechanical energy inversion of absorption is the direct current of vector-control frequency converter 7 DC master row by former dynamic traction machine 2, direct current is alternating current through inverter 16 inversion again, and the energy back absorbed the most at last is in AC network 9.Final test process record, is measured accurately by current/voltage transmitter 3 and records test figure until off-test.
2, back electromotive force harmonic test: power switch protection device 8 power transmission of first giving former dynamic traction machine 2, the power switch protection device 6 not power transmission of tested traction machine 1, makes former dynamic traction machine 2 be in rotating forward motoring condition.Secondly on-test, provide uniform rotating speed by former dynamic traction machine 2 for tested traction machine 1, allow tested traction machine 1 be in generating state.Final test process record, measures tested traction machine 1 inlet wire winding terminal voltage and harmonic component until off-test accurately by voltage transmitter.
3, to pulse torque test: first to power switch protection device 8 power transmission of former dynamic traction machine 2, the power switch protection device 6 of tested traction machine 1 not power transmission inlet wire short circuit isolating switch 13 is closed a floodgate.Secondly on-test, by former dynamic traction machine 2 for tested traction machine 1 provides the rotating speed of < 30rmp, and the torque of different size is exported.Final test process record, records the Wave data of torque on axle by torque sensor 15, and carries out frequency analysis until off-test.
4, brake performance is tested: realized by brake controller 12, please refer to shown in Fig. 2, brake controller 12 comprises air switch Q23, transformer T3, contactor KM2, contactor KM3, contactor KM4, electric capacity C1, and the rectifier RECT to be formed by full-wave rectification bridge, wherein, the input end of rectifier RECT is successively by contactor KM2, transformer T3 and air switch Q23 is connected to AC power, two ends after contactor KM3 and electric capacity C1 crossfire are connected to two output terminals of rectifier RECT respectively, the two ends of capacitor C1 are connected to after the detent series connection of contactor KM4 and tested traction machine, the two ends of contactor KM4 respectively and meet a resistance R1 and resistance R2, the detent two ends of tested traction machine also meet a resistance R3.
Its test process is: first give air switch Q23 combined floodgate power transmission, power switch protection device 8 power transmission of former dynamic traction machine 2, the power switch protection device 6 not power transmission of tested traction machine 1.Secondly the brake operation of tested traction machine, the detent of tested traction machine is made to be in magnet excitation state by brake controller 12 disposable adhesive contactor KM2, KM3, KM4, after time delay, releasing contactor KM4 makes the detent of tested traction machine be in weak hold mode, guarantees that the brake operation of tested traction machine is normal.Secondly on-test, first by the brake of tested traction machine by the locking of tested traction machine 1, then force to drag tested traction machine by former dynamic traction machine 2 rotate and export ascending torque, when the motor of tested traction machine 1 starts to rotate until rotating speed is greater than the detent that 15rmp opens tested traction machine at once, brake block is avoided to cross cause thermal damage.Final test process record, records the waveform of torque on axle, rotating speed respectively by torque sensor 15 and scrambler 10, and carries out the analysis of stiction and kinetic force of friction until the motor of tested traction machine 1 stops.
Above-listed detailed description is illustrating for the utility model possible embodiments, and this embodiment is also not used to limit the scope of the claims of the present utility model, does not allly depart from the equivalence that the utility model does and implements or change, and all should be contained in the scope of the claims of this case.
Claims (8)
1. a Novel traction machine performance testing device, it is characterized in that, it comprises tested traction machine, former dynamic traction machine, brake controller, first vector-control frequency converter, second vector-control frequency converter, transformer, inverter, current/voltage transmitter, shaft coupling, moment of inertia device, torque sensor, first scrambler, second scrambler and AC network, wherein, described AC network passes through transformer successively, first vector-control frequency converter is connected to the input end of motor of tested traction machine, and this AC network is also connected to the input end of motor of former dynamic traction machine by the second vector-control frequency converter, described current/voltage transmitter is connected between the input end of motor of the first vector-control frequency converter and tested traction machine, connected by shaft coupling between the traction sheave of described tested traction machine and the traction sheave of former dynamic traction machine, moment of inertia device and torque sensor are all fixedly connected on shaft coupling, described first scrambler and the second scrambler are individually fixed on the traction sheave of tested traction machine and the traction sheave of former dynamic traction machine, and the output terminal of the first scrambler and the second scrambler is connected to the feedback end of the first vector-control frequency converter and the second vector-control frequency converter respectively, the DC master row of described second vector-control frequency converter is connected to AC network by inverter, described brake controller is connected on the detent of tested traction machine.
2. Novel traction machine performance testing device according to claim 1, is characterized in that, described first vector-control frequency converter and the second vector-control frequency converter are four-quadrant frequency converter.
3. Novel traction machine performance testing device according to claim 1, it is characterized in that, described Novel traction machine performance testing device comprises an inlet wire short circuit isolating switch further, and described inlet wire short circuit isolating switch is connected between the input end of motor of current/voltage transmitter and tested traction machine.
4. the Novel traction machine performance testing device according to any one of claim 1-3, it is characterized in that, described current/voltage transmitter comprises current transducer and voltage transmitter, and described current transducer and voltage transmitter are all connected between the input end of motor of the first vector-control frequency converter and tested traction machine.
5. Novel traction machine performance testing device according to claim 1; it is characterized in that; described Novel traction machine performance testing device comprises the first power switch protection device and second source switching protective device further; described first power switch protection device is connected between AC network and transformer, and described second source switching protective device is connected between the input end of AC network and the second vector-control frequency converter.
6. Novel traction machine performance testing device according to claim 1, it is characterized in that, described brake controller comprises air switch Q23, transformer T3, contactor KM2, contactor KM3, contactor KM4, electric capacity C1, rectifier RECT, wherein, the input end of described rectifier RECT is successively by contactor KM2, transformer T3 and air switch Q23 is connected to AC power, two ends after described contactor KM3 and electric capacity C1 crossfire are connected to two output terminals of rectifier RECT respectively, the two ends of capacitor C1 are connected to after the detent series connection of described contactor KM4 and tested traction machine.
7. Novel traction machine performance testing device according to claim 6, is characterized in that, respectively and meet a resistance R1 and resistance R2, the detent two ends of described tested traction machine also meet a resistance R3 at the two ends of described contactor KM4.
8. Novel traction machine performance testing device according to claim 6, is characterized in that, described rectifier RECT is full-wave rectification bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420659677.1U CN204202894U (en) | 2014-11-05 | 2014-11-05 | A kind of Novel traction machine performance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420659677.1U CN204202894U (en) | 2014-11-05 | 2014-11-05 | A kind of Novel traction machine performance testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204202894U true CN204202894U (en) | 2015-03-11 |
Family
ID=52660839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420659677.1U Active CN204202894U (en) | 2014-11-05 | 2014-11-05 | A kind of Novel traction machine performance testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204202894U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182236A (en) * | 2015-09-18 | 2015-12-23 | 卓越（苏州）自动化设备有限公司 | Device for detecting the performance of a wiper motor of passenger vehicle |
| CN106053113A (en) * | 2016-06-30 | 2016-10-26 | 天津市特种设备监督检验技术研究院 | Reliability testing platform for elevator traction machine |
| CN106197985A (en) * | 2016-08-23 | 2016-12-07 | 顾德仁 | Multi-functional brake test cabinet |
| CN106792492A (en) * | 2017-03-07 | 2017-05-31 | 苏州大学 | A kind of monitoring system based on radio detection traction machine state |
| CN108562806A (en) * | 2018-01-05 | 2018-09-21 | 日立楼宇技术（广州）有限公司 | Method, apparatus, equipment and the storage medium of elevator traction machine performance whole detection |
| CN109031160A (en) * | 2018-10-08 | 2018-12-18 | 华高科技（苏州）有限公司 | A kind of ABB converter circuit plate load capacity detection method |
| CN109580227A (en) * | 2017-09-29 | 2019-04-05 | 兄弟工业株式会社 | Monitoring arrangement |
| CN109709469A (en) * | 2018-12-25 | 2019-05-03 | 无锡市大元广盛电气股份有限公司 | A kind of four-in-one variable-frequency governor load test approach and its load testing fixture |
| CN109900457A (en) * | 2017-12-11 | 2019-06-18 | 日立楼宇技术（广州）有限公司 | A kind of test platform of traction machine brake dynamic life time |
| CN113687229A (en) * | 2021-09-09 | 2021-11-23 | 江苏省特种设备安全监督检验研究院 | Testing device and testing method for thermal test of motor with brake |
-
2014
- 2014-11-05 CN CN201420659677.1U patent/CN204202894U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182236A (en) * | 2015-09-18 | 2015-12-23 | 卓越（苏州）自动化设备有限公司 | Device for detecting the performance of a wiper motor of passenger vehicle |
| CN106053113A (en) * | 2016-06-30 | 2016-10-26 | 天津市特种设备监督检验技术研究院 | Reliability testing platform for elevator traction machine |
| CN106053113B (en) * | 2016-06-30 | 2018-10-02 | 天津市特种设备监督检验技术研究院 | A kind of elevator traction machine reliability test bench |
| CN106197985A (en) * | 2016-08-23 | 2016-12-07 | 顾德仁 | Multi-functional brake test cabinet |
| CN106792492A (en) * | 2017-03-07 | 2017-05-31 | 苏州大学 | A kind of monitoring system based on radio detection traction machine state |
| CN109580227A (en) * | 2017-09-29 | 2019-04-05 | 兄弟工业株式会社 | Monitoring arrangement |
| CN109900457A (en) * | 2017-12-11 | 2019-06-18 | 日立楼宇技术（广州）有限公司 | A kind of test platform of traction machine brake dynamic life time |
| CN108562806A (en) * | 2018-01-05 | 2018-09-21 | 日立楼宇技术（广州）有限公司 | Method, apparatus, equipment and the storage medium of elevator traction machine performance whole detection |
| CN108562806B (en) * | 2018-01-05 | 2021-02-26 | 日立楼宇技术（广州）有限公司 | Method, device, equipment and storage medium for overall detection of performance of elevator traction machine |
| CN109031160A (en) * | 2018-10-08 | 2018-12-18 | 华高科技（苏州）有限公司 | A kind of ABB converter circuit plate load capacity detection method |
| CN109709469A (en) * | 2018-12-25 | 2019-05-03 | 无锡市大元广盛电气股份有限公司 | A kind of four-in-one variable-frequency governor load test approach and its load testing fixture |
| CN113687229A (en) * | 2021-09-09 | 2021-11-23 | 江苏省特种设备安全监督检验研究院 | Testing device and testing method for thermal test of motor with brake |
| CN113687229B (en) * | 2021-09-09 | 2023-08-22 | 江苏省特种设备安全监督检验研究院 | Test device and test method for motor thermal test with brake |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204202894U (en) | A kind of Novel traction machine performance testing device | |
| CN204495970U (en) | Energy-saving of motor system test platform | |
| CN102243145B (en) | Testing apparatus and method for electric drive system of electric automobile | |
| CN109799016B (en) | DC motor output torque calibration device | |
| CN110907823A (en) | Real-time acquisition system and method for servo motor test data | |
| WO2017101135A1 (en) | Intelligent detection system for electromagnetic brake | |
| WO2019184581A1 (en) | Method, device and system for measuring efficiency of vehicle electrical motor controller | |
| CN202614870U (en) | Frequency converter load test system | |
| CN102928779A (en) | Method and device for testing mechanical property of motor | |
| CN202994465U (en) | Double-change gearbox test system for engineering machinery | |
| CN105093108A (en) | Dynamic characteristic on-line monitoring system in motor starting process | |
| CN202994466U (en) | CVT test system | |
| CN103700313B (en) | A kind of automotive engine throttle voltage-controlled frequency conversion motor experimental system for simulating | |
| CN102279103A (en) | Drive system test method and device for alternating current drive electric locomotive | |
| CN203849378U (en) | A permanent-magnet synchronous motor experiment test platform | |
| CN104793141B (en) | A kind of Thee-phase alternating current permanent-magnetic motor temperature rise test method | |
| Novak et al. | Efficiency mapping of a 100 kW PMSM for traction applications | |
| CN100362739C (en) | Method and device for producing electric motor arbitrary mechanical characteristic based on PWM technique | |
| CN104808148A (en) | Temperature rise test method for multiphase multi-unit permanent magnet motor | |
| CN202421323U (en) | Automatic testing device for photovoltaic inverter | |
| CN203414576U (en) | Dynamic load apparatus for testing variable frequency motor | |
| CN109164384B (en) | Motor stator insulation aging test device and test method | |
| CN102829972B (en) | Single-power-source driven direct-current motor counter-trawling loading system | |
| CN204719124U (en) | A kind of device of accurate measurement contactor coil adhesive release voltage | |
| CN207148238U (en) | A kind of performance testing device of electric saver for single-phase electric motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 612, Building 13, Compound 100, Xianlie Middle Road, Yuexiu District, Guangzhou City, Guangdong Province, 510070 Patentee after: Institute of intelligent manufacturing, Guangdong Academy of Sciences Address before: Room 612, Building 13, Compound 100, Xianlie Middle Road, Yuexiu District, Guangzhou City, Guangdong Province, 510070 Patentee before: GUANGDONG INSTITUTE OF INTELLIGENT MANUFACTURING |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: Room 612, Building 13, Compound 100, Xianlie Middle Road, Yuexiu District, Guangzhou City, Guangdong Province, 510070 Patentee after: GUANGDONG INSTITUTE OF INTELLIGENT MANUFACTURING Address before: 510070 13 building, 100 martyrs Road, Yuexiu District, Guangzhou, Guangdong. Patentee before: Guangdong Institute of Automation |
|
| CP03 | Change of name, title or address |