CN203587263U - Load testing device for long stator iron core - Google Patents
Load testing device for long stator iron core Download PDFInfo
- Publication number
- CN203587263U CN203587263U CN201320736765.2U CN201320736765U CN203587263U CN 203587263 U CN203587263 U CN 203587263U CN 201320736765 U CN201320736765 U CN 201320736765U CN 203587263 U CN203587263 U CN 203587263U
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- CN
- China
- Prior art keywords
- iron core
- power supply
- long stator
- stator iron
- chopper
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- 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.)
- Expired - Lifetime
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 230000005284 excitation Effects 0.000 claims description 9
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The utility model discloses a load testing device for a long stator iron core, which is capable of creating a stress environment similar to actual running of the long stator iron core. The load testing device comprises a test bench, a pair of tension sensors, a magnetic yoke, a pair of exciting coils and an exciting power supply, wherein the one ends of the tension sensors are fixed on a cross rod of the test bench; the magnetic yoke is connected at the lower ends of the two tension sensors in a bridge mode; coil iron cores of the exciting coils are fixed at the lower end faces of both ends of the magnetic yoke, and the lower end face of the coil iron core and the end face of the long stator iron core are opposite to each other and provided with an air gap therebetween; the exciting power supply comprises a chopper, a power amplifier, a PWM generator, a current controller, an adder and an alternating signal generator which are sequentially connected with the exciting coils in series; the chopper is powered by a mains supply connected with a rectifier; current feedback end of the chopper is connected to the adder through a current transformer; and a power supply for the alternating signal generator is provided after superposition of a DC given power supply and an AC given power supply.
Description
Technical field
The utility model relates to a kind of load test equipment for long stator iron core.
Background technology
Long stator iron core is the most frequently used is to be laid on the track girder of magnetic-levitation train line.While not driving train, long stator iron core does not stress, and is only subject to its Gravitative Loads.While driving train, the linear motor rotor coil on long stator iron core and train forms motor-field, produces tractive force and suspending power, and this power makes train suspend and advance fast, and meanwhile, this power also acts on long stator iron core.Therefore,, in whole long stator iron core life cycle, long stator iron core will be subject to the effect of millions of power.Because the reliability requirement of magnetic suspension train is high, require the type approval test of long stator iron core can simulate the load force-bearing situation of operation in 80 years.But just current domestic such simulation test equipment that also do not have.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiencies in the prior art, a kind of load test equipment for long stator iron core is provided, it can be created the force environment of a long stator iron core similar to actual motion and constantly act on long stator iron core, for testing the load-carrying ability of long stator iron core.
A kind of technical scheme that realizes above-mentioned purpose is: a kind of load test equipment for long stator iron core, comprise the test-bed being formed by a base, two root posts and a cross bar, described long stator iron core is fixed on described base, described testing apparatus also comprises a pair of pulling force sensor, a yoke, a pair of field coil and excitation power supply, wherein, one end of described a pair of pulling force sensor is separately fixed on the cross bar of described test-bed; Described yoke is connected across the lower end of a pair of pulling force sensor; The iron-core coil of described a pair of field coil is fixed on the lower surface, two of described yoke correspondingly, so that the lower surface of iron-core coil is relative with the end face of long stator iron core and have an air gap; Described excitation power supply comprises successively the chopper, a power amplifier, a PWM generator, a current controller, a totalizer and the alternating signal generator that are connected in series with described field coil; The power supply of described chopper provides by the mains supply that connects rectifier; The current feedback terminal of described chopper is connected in described totalizer by a current transformer; The power supply of described alternating signal generator provides after exchanging given power supply stack with one by the given power supply of a direct current.
The above-mentioned load test equipment for long stator iron core, wherein, described current controller is pi regulator.
The above-mentioned load test equipment for long stator iron core, wherein, described chopper is the H type chopper that a frequency reaches 100kHz.
The above-mentioned load test equipment for long stator iron core, wherein, described excitation power supply is connected with described field coil by a fuse.
The technical scheme of the load test equipment for long stator iron core of the present utility model, can create the force environment of a long stator iron core similar to actual motion and constantly act on long stator iron core, for testing the load-carrying ability of long stator iron core.The alternating signal generator that it adopts AC and DC to superpose, makes signal be easy to regulate; Adopt PI controller, make exciting current stable; Proportion is made field power supply up to the H type chopper of 100kHz, makes it have high-speed response characteristic; Adopt the adjustable tension structure of air gap, make pulling force similar to real load.
Accompanying drawing explanation
Fig. 1 is the structural representation of the load test equipment for long stator iron core of the present utility model.
Embodiment
In order to understand the technical solution of the utility model better, below by embodiment particularly and be described in detail by reference to the accompanying drawings:
Refer to Fig. 1, the load test equipment for long stator iron core of the present utility model, comprises test-bed 1, long stator iron core 2, a pair of pulling force sensor 3, a yoke 4, a pair of field coil 5, an excitation power supply 6, wherein,
Test-bed 1 consists of a base 10, two root posts 11 and a cross bar 12;
Long stator iron core 2 is fixed on base 10;
One end of a pair of pulling force sensor 3 is separately fixed on the cross bar 12 of test-bed 1;
Yoke 4 is connected across the lower end of two pulling force sensors 3;
The iron-core coil 50 of two field coils 5 is fixed on the lower surface at yoke 4 two correspondingly, so that the lower surface of iron-core coil 50 is relative with long stator iron core 2 end faces and be provided with an effective air gap;
Excitation power supply 6 is connected with field coil 5 by a fuse 68, and this excitation power supply 6 comprises successively the chopper 60, a power amplifier 61, a PWM generator 62, a current controller 63, a totalizer 64 and the alternating signal generator 65 that are connected in series with field coil 5; Chopper 60 is the H type chopper that a frequency reaches 100kHz, and its power supply provides by the mains supply that connects a rectifier 66; Current controller 63 is pi regulator; The current feedback terminal of chopper 60 is connected in totalizer 64 by a current transformer 67; The power supply of alternating signal generator 65 is exchanged with one after given power supply 652 superposes and is provided by the given power supply 651 of a direct current.
The principle of work of the load test equipment for long stator iron core of the present utility model is: alternating signal generator 65 requires to send alternating signal according to load test, current controller 63 puts on the electric current of field coil 5 according to the instruction control of alternating signal generator 65, in the magnetic field that the magnetic field that energising field coil 5 forms forms at iron-core coil 50, yoke 4 and long stator iron core 2, produce magnetic flux, form suction.Owing to having certain air gap between iron-core coil 50 and long stator iron core 2, this suction stretches pulling force sensor 3, its amount of tension has reflected the suction that long stator iron core 2 is subject to, this suction is alternation along with the alternation of field coil 5 electric currents, also follow alternating signal that alternating signal generator 65 sends and alternation, the load-carrying ability of having tested therefrom long stator iron core.
Load test equipment for long stator iron core of the present utility model adopts the alternating signal generator 65 of alternating current-direct current stack, makes signal be easy to regulate; Current controller 63 adopts PI controller, makes exciting current stable; Chopper 60 proportions are made field power supply up to the H type chopper of 100kHz, make it have high-speed response characteristic; Adopt the adjustable tension structure of air gap, make pulling force similar to real load.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for the utility model is described, and be not used as restriction of the present utility model, as long as within the scope of connotation of the present utility model, variation, modification to the above embodiment all will drop within the scope of claims of the present utility model.
Claims (4)
1. the load test equipment for long stator iron core, comprise the test-bed being formed by a base, two root posts and a cross bar, described long stator iron core is fixed on described base, it is characterized in that, described testing apparatus also comprises a pair of pulling force sensor, a yoke, a pair of field coil and excitation power supply, wherein
One end of described a pair of pulling force sensor is separately fixed on the cross bar of described test-bed;
Described yoke is connected across the lower end of a pair of pulling force sensor;
The iron-core coil of described a pair of field coil is fixed on the lower surface, two of described yoke correspondingly, so that the lower surface of iron-core coil is relative with the end face of long stator iron core and have an air gap;
Described excitation power supply comprises successively the chopper, a power amplifier, a PWM generator, a current controller, a totalizer and the alternating signal generator that are connected in series with described field coil; The power supply of described chopper provides by the mains supply that connects rectifier; The current feedback terminal of described chopper is connected in described totalizer by a current transformer; The power supply of described alternating signal generator provides after exchanging given power supply stack with one by the given power supply of a direct current.
2. the load test equipment for long stator iron core according to claim 1, is characterized in that, described current controller is pi regulator.
3. the load test equipment for long stator iron core according to claim 1, is characterized in that, described chopper is the H type chopper that a frequency reaches 100kHz.
4. the load test equipment for long stator iron core according to claim 1, is characterized in that, described excitation power supply is connected with described field coil by a fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320736765.2U CN203587263U (en) | 2013-11-20 | 2013-11-20 | Load testing device for long stator iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320736765.2U CN203587263U (en) | 2013-11-20 | 2013-11-20 | Load testing device for long stator iron core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203587263U true CN203587263U (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320736765.2U Expired - Lifetime CN203587263U (en) | 2013-11-20 | 2013-11-20 | Load testing device for long stator iron core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203587263U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630350A (en) * | 2013-12-10 | 2014-03-12 | 国网上海市电力公司 | Method for testing load of long stator core |
| CN115014611A (en) * | 2022-06-24 | 2022-09-06 | 湖南凌翔磁浮科技有限责任公司 | Long stator suspension force testing device and method |
-
2013
- 2013-11-20 CN CN201320736765.2U patent/CN203587263U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630350A (en) * | 2013-12-10 | 2014-03-12 | 国网上海市电力公司 | Method for testing load of long stator core |
| CN115014611A (en) * | 2022-06-24 | 2022-09-06 | 湖南凌翔磁浮科技有限责任公司 | Long stator suspension force testing device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |
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| CX01 | Expiry of patent term |