CN105629170B - A kind of electromagnetic compatibility motor loading test device - Google Patents
A kind of electromagnetic compatibility motor loading test device Download PDFInfo
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- CN105629170B CN105629170B CN201511015750.7A CN201511015750A CN105629170B CN 105629170 B CN105629170 B CN 105629170B CN 201511015750 A CN201511015750 A CN 201511015750A CN 105629170 B CN105629170 B CN 105629170B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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Abstract
The present invention relates to motor electromagnetic compatibility test technical fields, more particularly, to a kind of electromagnetic compatibility motor loading test device.A kind of electromagnetic compatibility motor loading test device, wherein, unit and load cell are provided including tested motor, gear unit, pressure, described gear unit one end connects tested motor, the other end rotatably connects pressure and provides unit, and the rotational energy of tested motor is transmitted to pressure and provides unit by the gear unit；The pressure provides unit and is responsible for providing load to gear unit and tested motor to achieve the purpose that load；The load cell provides unit with the pressure and connect, and is responsible for measuring the torsion of tested motor.The configuration of the present invention is simple can simplify operating procedure, energy saving, reduce cost, and will not introduce electromagnetic interference.
Description
Technical field
The present invention relates to motor electromagnetic compatibility test technical fields, load more particularly, to a kind of electromagnetic compatibility motor
Test device.
Background technique
It, also can be more and more to the test with driving motor with the development of new-energy automobile.Motor is simultaneous in progress electromagnetism
When holding test, need to carry out load test to motor, it, cannot due to the more demanding of loading device in field of electromagnetic compatibility
Electromagnetic interference outside introducing, loading device are also required for good anti-electromagnetic interference capability.The scheme taken at present is desirable
It is individually built again with the dedicated semi-anechoic chamber of driving motor system testing, or high cost is carried out to existing anechoic chamber,
Transformation, and need to be equipped with corresponding dynamometer machine.The plant modification needs several hundred or even up to ten million expenses, cost of implementation at present
It is very high.
How rationally to be loaded to tested motor, measure torque, to judge the size of motor load.Prior art test
Principle is powered for tested motor and rotates, and drives load motor rotation, and the rotation of load motor gives load offer energy or by bearing
It carries and generates the rotation that brake force prevents load motor to load motor.
For how to control the size of load, technical solution is to load in load motor at present.According to the difference of principle,
The load of test is generally divided into following several: magnetic powder brake, hysteresis brake, electric eddy current brake and motor are to the side of dragging
Formula.Respective advantage and disadvantage are as follows:
1. magnetic powder brake
Feature: can export very big torque, it is single as can only run at the low rotational speed.
Disadvantage: magnetic powder brake be according to electromagnetic principle and using magnetic powder transmit torque, it using magnetic powder as working media,
Using excitation current as control means, achieve the purpose that control braking or transmitting torque.Therefore it is easy fever, needs plus water cooling is set
It is standby.And grown magnetic powder brake using the time and had magnetic phenomenon, need time-based maintenance (supplement magnetic powder).
2. hysteresis brake
Feature: it with magnetic powder on the contrary, very high revolving speed can be exported, but output torque receives great limitation, can only export
Small torque.Output torque and revolving speed are unrelated, and high-precision 0 torque may be implemented to full scale torque and export control.
Disadvantage: output torque is too small, is only used for the test occasion of low-power machine, micro machine.
3. electric eddy current brake
Feature: large torque, the output of high-revolving torque are supported.
Disadvantage: there is no output torque when revolving speed is 0, because the locked rotor test of motor can not be supported；In low speed operation
The low efficiency of output, temperature increase, and need to add water cooling equipment.
4. motor load (electric dynamometer)
Feature: supporting motor to dragging, and the mechanical output that subject motor is done can be converted to again electric energy feedback to power grid,
Achieve the purpose that energy saving.
Disadvantage: the fan-out capability of load is equal to the output performance of the Asynchronous Frequency-variable motor, can not generally export in low speed
Large torque.
As can be seen that all schemes are all to want to do on motor load from above various motor loading method methods
Method, and unavoidable electric and control section, it is during the test, existing due to the conversion by load motor
The existing operation of technology motor load detection loading method is extremely inconvenient, step is more, detection is inaccurate, efficiency is lower and mechanical knot
Structure design is complicated, electric structure is complicated the problem of also bringing additional electromagnetic interference.
Summary of the invention
The present invention in order to overcome at least one of the drawbacks of the prior art described above, provides a kind of electromagnetic compatibility motor load survey
Trial assembly is set.The test device structure is simple, can simplify operating procedure, energy saving, reduces cost, and will not introduce electromagnetism
Interference.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of electromagnetic compatibility motor load test dress
It sets, wherein provide unit and load cell including tested motor, gear unit, pressure, gear unit one end connection is tested
Motor, the other end rotatably connect pressure and provide unit, and the rotational energy of tested motor is transmitted to pressure by the gear unit
Power provides unit；The pressure provides unit and is responsible for providing load to gear unit and tested motor to achieve the purpose that load；
The load cell provides unit with the pressure and connect, and is responsible for measuring the torsion of tested motor.
Further, the gear unit includes transmission shaft and scroll wheel, and described transmission shaft one end connects tested motor
Output shaft, the other end are removably connect with the scroll wheel.When scroll wheel after a period of use, it may appear that it is a degree of
It is to replace scroll wheel for convenience that abrasion, the scroll wheel and transmission shaft, which are detachably connected,.
Further, it includes the first pressure sheet and the second pressure sheet that the pressure, which provides unit, first pressure sheet and
Second pressure sheet is oppositely arranged and is coated on the scroll wheel, and the both ends of the first pressure sheet are respectively equipped with the first pressure plate and
Two pressure plates, the both ends of the second pressure sheet are respectively equipped with third pressure plate and the 4th pressure plate, first pressure plate and third
Pressure plate is bolted together, and second pressure plate and the 4th pressure plate are bolted together.Pass through tune
Save the connection bolt of the first pressure plate and third pressure plate and the connection bolt or use of the second pressure plate and the 4th pressure plate
Pneumatic mode can make the first pressure sheet and the second pressure sheet compress scroll wheel, when scroll wheel is rotated with tested motor at this time
Frictional force will be generated, and above-mentioned frictional force gradually increases with the increase of the pressure between the first pressure sheet and the second pressure sheet
Greatly, achieve the purpose that load to tested motor with this.First pressure sheet and the second pressure sheet are made of wear-resistant material.
Further, the load cell includes the first load cell and the second load cell, first load cell
The pressure is respectively provided at the second load cell, and the two sides of unit, first load cell and the second load cell pair are provided
Claim distribution.
Further, first load cell includes the first brake axle, first pressure meter and the first impetus, and described the
One brake axle one end is fixed between the first pressure plate and third pressure plate, and the other end is located on the first impetus, and described first
Pressure gauge is located between the first impetus and the first brake axle.Second load cell includes the second brake axle, second pressure
Meter and the second impetus, second brake axle one end are fixed between the second pressure plate and the 4th pressure plate, and the other end is located at
On second impetus, the second pressure meter is located between the second impetus and the second brake axle.
Further, first impetus includes first level face and the first vertical plane, and the first pressure meter includes
First level pressure gauge and the first vertical manometer, the first level pressure gauge are located at the first brake axle bottom surface and first level
Between face, first vertical manometer is located between the first braking shaft end head and the first vertical plane.The second impetus packet
The second horizontal plane and the second vertical plane are included, the second pressure meter includes the second horizontal pressure force meter and the second vertical manometer, institute
It states the second horizontal pressure force meter to be located between the second brake axle bottom surface and the second horizontal plane, second vertical manometer is located at second
It brakes between shaft end head and the second vertical plane.
The working principle of the invention:
Assume initially that rotation direction when tested motor works normally is counter clockwise direction, when tested motor rotation, band
Dynamic transmission shaft rotation, that is, scroll wheel is driven to rotate together, to generate rotatory force.We provide unit by pressure at this time
Scroll wheel is clamped, pressure, which provides unit, during clamping to generate frictional force to scroll wheel, hold tighter, and frictional force is bigger,
To provide resistance to scroll wheel, the load of tested motor is achieved that with this.After frictional force generates, to realize balance, then roll
Driving wheel will necessarily provide pressure unit and generate reaction force, this reaction force will drive the first brake axle of the first load cell
It is rotated down, at this point, the first brake axle will generate pressure to the first impetus, the size of the pressure can pass through first pressure
Meter is measured, and the braking arm of force of the pressure at this time is L.Scroll wheel then can be obtained by by conversion according to lever principle,
Namely tested motor at this time caused by torque.Second load cell and the first load cell are symmetrically distributed in pressure and provide list
The two sides of member, the reverse protection of the second load cell functioned as when tested motor reversely rotates or is abnormal, work as electricity
When machine reversely rotates, the second brake axle can then serve as position limitation protection.
When rotation direction when tested motor works normally is clockwise direction, the working principle of the invention and above-mentioned work
Make that principle is identical, only the exchange function of the first load cell and the second load cell.
The beneficial effects of the present invention are:
Compared with prior art, The present invention reduces electric control systems, have saved hardware material cost；Reduce load
With motor, it is changed to more common scroll wheel, has saved very big cost；Darkroom without transformation, saved huge hardware at
This, and if darkroom is after transformation, which tests other products will be inconvenient, can only be used to test such motor producing
Product；The test device can move, and increase the convenience of test.In the present invention, electric component is not used, in electromagnetic compatibility
In test, then it can not have to consider the influence of the electronic and electric components bring electromagnetic interference to test such as load and control.Load
Ability is strong, and the torsion which drives transmission shaft to generate in motor is offset by way of frictional resistance and straight-bar.So that
The operation of the device is only limited by the length and hardness of the frictional force and brake axle that can be provided.
Therefore, the configuration of the present invention is simple can simplify operating procedure, energy saving, reduce cost, and will not introduce electricity
Magnetic disturbance.
Detailed description of the invention
Fig. 1 is overall structure of the present invention.
Fig. 2 is overall structure side view of the present invention.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；In order to better illustrate this embodiment, attached
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable.Being given for example only property of positional relationship is described in attached drawing
Illustrate, should not be understood as the limitation to this patent.
As illustrated in fig. 1 and 2, a kind of electromagnetic compatibility motor loading test device, wherein single including tested motor 1, transmission
Member, pressure provide unit and load cell, and described gear unit one end connects tested motor 1, and the other end rotatably connects pressure
Power provides unit, and the rotational energy of tested motor 1 is transmitted to pressure and provides unit by the gear unit；The pressure provides single
Member is responsible for providing load to gear unit and tested motor 1 to achieve the purpose that load；The load cell is mentioned with the pressure
It is connected for unit, is responsible for measuring the torsion of tested motor 1.
As illustrated in fig. 1 and 2, the gear unit includes transmission shaft 2 and scroll wheel 3, and 2 one end of transmission shaft connection is tested
The output shaft of motor 1, the other end are removably connect with the scroll wheel 3.When scroll wheel 3 after a period of use, it may appear that
A degree of abrasion, it is to replace scroll wheel 3 for convenience that the scroll wheel 3 is detachably connected with transmission shaft 2.
As shown in Fig. 2, it includes the first pressure sheet 4 and the second pressure sheet 5, first pressure sheet that the pressure, which provides unit,
4 and second pressure sheet 5 be oppositely arranged and be coated on the scroll wheel 3, the both ends of the first pressure sheet 4 are respectively equipped with the first pressurization
Plate 6 and the second pressure plate 7, the both ends of the second pressure sheet 5 are respectively equipped with third pressure plate 8 and the 4th pressure plate 9, and described first adds
Together with pressing plate 6 is bolted with third pressure plate 8, second pressure plate 7 and the 4th pressure plate 9 are bolted
Together.By the connection bolt and the second pressure plate 7 and the 4th pressure plate 9 that adjust the first pressure plate 6 and third pressure plate 8
It connects bolt or uses pneumatic mode, the first pressure sheet 4 and the second pressure sheet 5 can be made to compress scroll wheel 3, rolled at this time
Wheel 3 will generate frictional force when rotating with tested motor 1, and above-mentioned frictional force with the first pressure sheet 4 and the second pressure sheet 5 it
Between pressure increase and incrementally increase, with this achieve the purpose that give tested motor 1 load.First pressure sheet 4 and second
Pressure sheet 5 is made of wear-resistant material.
As illustrated in fig. 1 and 2, the load cell includes the first load cell and the second load cell, first dynamometry
Unit and the second load cell are respectively provided at the pressure and provide the two sides of unit, first load cell and the second dynamometry list
Member is symmetrical.
As shown in Fig. 2, first load cell includes the first brake axle 10, first pressure meter and the first impetus 11,
Described first brake axle, 10 one end is fixed between the first pressure plate 6 and third pressure plate 8, and the other end is located at the first impetus 11
On, the first pressure meter is located between the first impetus 11 and the first brake axle 10.Second load cell includes second
Brake axle 14, second pressure meter and the second impetus 15, described second brake axle, 14 one end are fixed on the second pressure plate 7 and the 4th
Between pressure plate 9, the other end is located on the second impetus 15, and the second pressure meter is located at the second impetus 15 and the second braking
Between axis 14.
As shown in Fig. 2, first impetus 11 includes first level face 111 and the first vertical plane 112, first pressure
Power meter includes first level pressure gauge 12 and the first vertical manometer 13, and the first level pressure gauge 12 is located at the first brake axle
Between 10 bottom surfaces and first level face 111, first vertical manometer 13 is located at 10 end of the first brake axle and first vertically
Between face 112.Second impetus 15 includes the second horizontal plane 151 and the second vertical plane 152, and the second pressure meter includes
Second horizontal pressure force meter 16 and the second vertical manometer 17, the second horizontal pressure force meter 16 be located at 14 bottom surface of the second brake axle with
Between second horizontal plane 151, second vertical manometer 17 be located at 14 end of the second brake axle and the second vertical plane 152 it
Between.
The working principle of the invention:
Assume initially that rotation direction when tested motor 1 works normally is counter clockwise direction, when tested motor 1 rotates,
It drives transmission shaft 2 to rotate, that is, scroll wheel 3 is driven to rotate together, to generate rotatory force.We are provided by pressure at this time
Unit clamps scroll wheel 3, and pressure, which provides unit, during clamping to generate frictional force to scroll wheel 3, holds tighter, frictional force
It is bigger, to provide resistance to scroll wheel 3, the load of tested motor 1 is achieved that with this.After frictional force generates, to realize flat
Weighing apparatus, then scroll wheel 3 will necessarily provide pressure unit and generate reaction force, this reaction force will drive the of the first load cell
One brake axle 10 is rotated down, at this point, the first brake axle 10 will generate pressure to the first impetus 11, the size of the pressure can
It is measured in terms of through first pressure, the braking arm of force of the pressure at this time is L.Then can according to lever principle by conversion
To obtain scroll wheel 3, that is, tested motor 1 at this time caused by torque.Second load cell and the first load cell are symmetrical
It is distributed in pressure and the two sides of unit is provided, the second load cell functions as when tested motor 1 reversely rotates or is abnormal
Reverse protection, when motor reversely rotates, the second brake axle 14 can then serve as position limitation protection.
When tested motor 1 work normally when rotation direction be clockwise direction when, the working principle of the invention with it is above-mentioned
Working principle is identical, only the exchange function of the first load cell and the second load cell.
Obviously, the above embodiment of the present invention is just for the sake of clearly demonstrating examples made by the present invention, and is not
Restriction to embodiments of the present invention.For those of ordinary skill in the art, on the basis of the above description also
It can make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention should be included in right of the present invention and want
Within the protection scope asked.
Claims (4)
1. a kind of electromagnetic compatibility motor loading test device, which is characterized in that mentioned including tested motor (1), gear unit, pressure
For unit and load cell, described gear unit one end connects tested motor (1), and the other end rotatably connects pressure and provides list
The rotational energy of tested motor (1) is transmitted to pressure and provides unit by member, the gear unit；The load cell and the pressure
Power provides unit connection；
The gear unit includes transmission shaft (2) and scroll wheel (3), and described transmission shaft (2) one end connects the defeated of tested motor (1)
Shaft, the other end are removably connect with the scroll wheel (3)；
It includes the first pressure sheet (4) and the second pressure sheet (5), first pressure sheet (4) and second that the pressure, which provides unit,
Pressure sheet (5) is oppositely arranged and is coated on the scroll wheel (3), and the both ends of the first pressure sheet (4) are respectively equipped with the first pressurization
Plate (6) and the second pressure plate (7), the both ends of the second pressure sheet (5) are respectively equipped with third pressure plate (8) and the 4th pressure plate (9),
First pressure plate (6) and third pressure plate (8) are bolted together, and second pressure plate (7) and the 4th adds
Pressing plate (9) is bolted together；
The load cell includes the first load cell and the second load cell, first load cell and the second load cell
It is respectively provided at the pressure and the two sides of unit is provided；
First load cell includes the first brake axle (10), first pressure meter and the first impetus (11), first system
Moving axis (10) one end is fixed between the first pressure plate (6) and third pressure plate (8), and the other end is located at the first impetus (11)
On, the first pressure meter is located between the first impetus (11) and the first brake axle (10)；
Second load cell includes the second brake axle (14), second pressure meter and the second impetus (15), second system
Moving axis (14) one end is fixed between the second pressure plate (7) and the 4th pressure plate (9), and the other end is located at the second impetus (15)
On, the second pressure meter is located between the second impetus (15) and the second brake axle (14).
2. a kind of electromagnetic compatibility motor loading test device according to claim 1, which is characterized in that first pressurization
Piece (4) and the second pressure sheet (5) are made of wear-resistant material.
3. a kind of electromagnetic compatibility motor loading test device according to claim 1, which is characterized in that described first puts forth effort
Point (11) includes first level face (111) and the first vertical plane (112), and the first pressure meter includes first level pressure gauge
(12) and the first vertical manometer (13), the first level pressure gauge (12) are located at the first brake axle (10) bottom surface and the first water
Between plane (111), first vertical manometer (13) be located at the first brake axle (10) end and the first vertical plane (112) it
Between.
4. a kind of electromagnetic compatibility motor loading test device according to claim 1, which is characterized in that described second puts forth effort
Point (15) includes the second horizontal plane (151) and the second vertical plane (152), and the second pressure meter includes the second horizontal pressure force meter
(16) and the second vertical manometer (17), the second horizontal pressure force meter (16) are located at the second brake axle (14) bottom surface and the second water
Between plane (151), second vertical manometer (17) be located at the second brake axle (14) end and the second vertical plane (152) it
Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511015750.7A CN105629170B (en) | 2015-12-30 | 2015-12-30 | A kind of electromagnetic compatibility motor loading test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511015750.7A CN105629170B (en) | 2015-12-30 | 2015-12-30 | A kind of electromagnetic compatibility motor loading test device |
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| CN105629170A CN105629170A (en) | 2016-06-01 |
| CN105629170B true CN105629170B (en) | 2019-01-01 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974236B (en) * | 2016-06-03 | 2018-12-28 | 广州市诚臻电子科技有限公司 | A kind of motor load and drive system for electromagnetic compatibility test |
| CN105911397B (en) * | 2016-06-03 | 2020-01-14 | 广州市诚臻电子科技有限公司 | Motor loading system for electromagnetic compatibility test |
| CN106500908B (en) * | 2016-12-16 | 2022-05-10 | 广电计量检测（北京）有限公司 | Angle-adjustable torque lever device |
| CN109932653A (en) * | 2019-05-07 | 2019-06-25 | 洛阳智能农业装备研究院有限公司 | A kind of motor experimental bench test macro |
| CN112379187B (en) * | 2020-07-17 | 2022-06-07 | 襄阳达安汽车检测中心有限公司 | Loading device for EMC test of pneumatic wiper motor |
| CN111896870A (en) * | 2020-08-26 | 2020-11-06 | 上海微电机研究所(中国电子科技集团公司第二十一研究所) | Motor load working characteristic testing system and method |
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Address after: 511400 150, No. 8, Qishan Road, Shiqi Town, Panyu District, Guangzhou City, Guangdong Province Patentee after: Radio and TV Measurement and Testing Group Co.,Ltd. Address before: 510656 Guangdong city of Guangzhou province Whampoa Avenue Tianhe District Xiping Yun Road No. 163 Patentee before: GUANGZHOU GRG METROLOGY & TEST Co.,Ltd. |
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