CN217085114U - Frequency converter test system - Google Patents

Abstract

The application provides a converter test system includes: test tray for bear the converter that awaits measuring, include: the testing terminal comprises a positioning part and a first butt-joint terminal part, wherein the positioning part is used for fixing a frequency converter to be tested; the conveying device is used for moving the test tray to at least one test station; the test unit, the setting is in test station department, includes: the scanning module is fixed on the testing unit and used for scanning the image identification code on the frequency converter to be tested after the testing tray is moved to the testing station; the butt joint module is connected to the test end and comprises a second butt joint terminal part which is used for butt joint with the first butt joint terminal part so as to carry out power-on test on the frequency converter to be tested; the driving mechanism is connected with the butting module and used for driving the second butting terminal part to be butted with the first butting terminal part when the test tray is moved to the preset butting position; and after the test is finished, the connection between the second butt joint terminal part and the first butt joint terminal part is disconnected.

Description

Frequency converter test system

Technical Field

The application relates to the field of testing, in particular to a frequency converter testing system.

Background

After the frequency converter and other electrical equipment are assembled, the subsequent delivery process can be carried out after various functions of the equipment are normal through testing and acceptance. The frequency converter to be tested is provided with an image identification code for recording frequency converter equipment information, and the image identification code needs to be scanned before each test is carried out, so that the test result and the equipment information are correspondingly stored to facilitate tracing.

When testing, the frequency converter to be tested is placed on the test tray and is moved to a test station through the production line. An operator is connected with a test cable required by the test, and after the image identification code on the frequency converter to be tested is swept into the handheld scanning gun, the frequency converter to be tested is subjected to power-on test. And disconnecting the test cable after the test is finished, moving the test tray to the next test station, and repeating the steps until the scanning and the testing of all the frequency converters to be tested are finished.

The test method has the following problems: on each test station, an operator needs to scan the image identification code and test the connection of cables, so that the operation is complex and the test efficiency is low.

SUMMERY OF THE UTILITY MODEL

In view of this, embodiments of the present application aim to provide a frequency converter testing system to implement automatic scanning and power-on testing of a frequency converter to be tested, reduce labor intensity of an operator, and improve testing efficiency.

The application provides a converter test system includes: the test tray is used for bearing the frequency converter to be tested and comprises: the first butt joint terminal part is used for connecting the frequency converter to be tested to a test end in a communication manner; a conveyor for moving the test tray to at least one test station; at least one test unit disposed at the at least one test station, the test unit comprising: the scanning module is fixed on the testing unit and used for scanning the image identification code on the frequency converter to be tested after the testing tray is moved to the testing station; the butt joint module is connected to a test end and comprises a second butt joint terminal part which is used for butt joint with the first butt joint terminal part so as to carry out power-on test on the frequency converter to be tested; the driving mechanism is connected with the docking module and used for driving the second docking terminal part to be docked with the first docking terminal part when the test tray is moved to a preset docking position; and disconnecting the second butt joint terminal part from the first butt joint terminal part after the test is finished.

Optionally, the test unit further includes a blocking device disposed below the conveying device, and configured to block and position the test tray after the test tray is moved to the test station, and to release the test tray after the test is completed.

Optionally, the blocking device comprises a blocking swing arm hinged to the conveying device, and one end of the blocking swing arm is connected with the first air cylinder, so that when the first air cylinder acts, the other end of the blocking swing arm can swing around a hinged point of the blocking swing arm to block and position the test tray.

Optionally, the test unit further comprises a detection unit for detecting whether the test tray is moved to the test station; the blocking and positioning the test tray after the test tray is moved to the test station comprises: and when the detection unit detects that the test tray is moved to the test station, the blocking device is used for blocking and positioning the test tray.

Optionally, the test unit further includes a jacking device disposed below the conveying device, and when the test tray is blocked and positioned, the jacking device jacks the test tray to a height of a preset docking position; and, returning the test tray to the conveyor after the test is completed.

Optionally, the jacking device comprises: the jacking platform is used for bearing the test tray; and the second cylinder is arranged below the jacking platform, is connected with the jacking platform and is used for driving the jacking platform to move.

Optionally, the test unit further comprises: and the correlation inductor is arranged on one side of the test unit, which is close to the conveying device, and is used for detecting whether the test tray is inclined or not when being jacked.

Optionally, the driving mechanism includes a third cylinder, and an extending end of the third cylinder is connected to the second docking terminal portion to drive the second docking terminal portion to move in a direction approaching to or away from the first docking terminal portion, so that the second docking terminal portion is docked with or undocked from the first docking terminal portion.

The application provides a test system, the test tray that will load the converter that awaits measuring through conveyor removes the test station, utilize the scanning module that sets up on the test element to scan the image identification code on the converter that awaits measuring automatically, the butt joint module of test element docks with the terminal on the test tray is automatic, manual work wiring has been saved, manual scanning, automatic scanning and the last electric test of the converter that awaits measuring have been realized, operating personnel's intensity of labour has been reduced, the efficiency of software testing is improved.

Drawings

Fig. 1 is a schematic structural diagram of a test system according to an embodiment of the present application.

FIG. 2 is a partial top view of the test system of FIG. 1.

Fig. 3 is a schematic structural diagram of a test tray according to an embodiment of the present disclosure.

Fig. 4 is a schematic structural diagram of a test system according to another embodiment of the present application.

Fig. 5 is a schematic partial structural diagram of a test unit according to an embodiment of the present application.

Fig. 6 is a schematic partial structure diagram of a test system according to an embodiment of the present application.

Fig. 7 is a schematic partial structural diagram of a test system according to an embodiment of the present application.

Fig. 8 is a schematic partial structural diagram of a test system according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments.

The test system provided by the embodiment of the present application is described in detail with reference to fig. 1 and fig. 2. Fig. 1 is a schematic structural diagram of a test system according to an embodiment of the present disclosure, and fig. 2 is a partial top view of the test system shown in fig. 1. The test system may include: a conveying device 1, a test tray 2 and a test unit 3.

When testing the frequency converter, fix the frequency converter that awaits measuring on test tray 2 to drive test tray 2 by conveyor 1 and remove, after the frequency converter that awaits measuring on test tray 2 was removed the test station by conveyor 1, the test unit 3 that sets up in test station department utilizes the scanning module 31 of fixing on it, scans the image identification code on the frequency converter that awaits measuring, acquires the equipment information of the frequency converter that awaits measuring.

With continued reference to fig. 1, 2 and 4, the conveyor 1 includes a frame 11, a conveyor chain 12 and a conveyor chain drive mechanism (not shown).

The frame 11 is used for carrying a conveyor chain 12, a conveyor chain drive mechanism and other components connected to the conveyor device. Referring to fig. 4, the frame 11 may include two rails 111 disposed in parallel with each other, and a leg 112 for supporting the two rails 111. In some embodiments, support rods 113 may also be provided between the legs 112 to improve the stability of the frame 11.

The conveyor chain 12 is used to move the test trays 2 placed thereon. The conveyor chain 12 may be arranged in the track 111 in the extension direction of the track 111. The height of the conveyor chain 12 may be set higher than the upper surface of the rail 111 so that the test tray 2 can be placed on the conveyor chain 12. In some embodiments, the conveyor chain 12 may be a double speed chain.

The conveying chain driving mechanism is used for driving the conveying chain 12 to move. As one implementation, the conveying chain driving mechanism may include a driving motor and a driving sprocket, wherein the driving motor may be fixed on the frame 11, an output shaft of the driving motor is connected with the driving sprocket, and the driving sprocket is engaged with the conveying chain 12 so that the driving motor can drive the conveying chain to move when rotating. Of course, the above description is only one possible way of the structure of the conveyor chain driving mechanism, and the specific structure of the conveyor chain driving mechanism is not limited in the embodiments of the present application, and any driving way known in the art may be used.

On the transport device 1, in the direction of its movement, there is at least one test station, at which a test unit 3 can be arranged. The number of the test stations is not specifically limited, and the test stations can be set according to actual test requirements. As shown in fig. 2, for example, the conveyor has two test stations 13 and 13'.

When testing, the test tray 2 carries the frequency converter to be tested and moves on the conveying device 1. The structure of the test tray 2 provided in the embodiment of the present application is described in detail below with reference to fig. 3.

As shown in fig. 3, the test tray 2 may include a tray main body 21 and a positioning portion 22 provided on the tray main body 21. Wherein, the tray main body 21 is a rectangular flat structure; the upper surface of the tray main body 21 is a plane for placing a frequency converter to be tested. The positioning part 22 includes a first stopper 221 and a second stopper 222 protruded on the upper surface of the tray main body 21, wherein the first stopper 221 and the second stopper 222 are perpendicular to each other; when the frequency converter to be tested is placed on the test tray 2, two adjacent side surfaces of the frequency converter to be tested may abut against the first stopper 221 and the second stopper 222, respectively, to limit the movement of the frequency converter to be tested.

In some embodiments, the positioning portion 22 of the test tray 2 further includes a first positioning column (not shown) protruding from the upper surface of the tray main body 21. The frequency converter to be tested is provided with a groove which can be matched with the first positioning column, so that when the frequency converter to be tested abuts against the first stop block 221 and the second stop block 222, the first positioning column can penetrate through the groove of the frequency converter to be tested, and the frequency converter to be tested is fixed.

By providing the positioning portion 22 on the test tray 2, the frequency converter to be tested can be placed at a fixed position on the test tray 2. It will be appreciated that the image identification code containing the information on the frequency converter device under test is typically located at a fixed location on the frequency converter under test. Therefore, when the frequency converter to be tested is placed on the test tray 2, the position of the image identification code on the frequency converter to be tested relative to the test tray 2 is also fixed.

In some embodiments, one side of the upper surface of the test tray 2 has a first docking terminal portion 23, and the first docking terminal portion 23 includes a plurality of first docking terminals 231, which are electrically connected to the frequency converter to be tested, respectively, for communicatively connecting the frequency converter to be tested to the test end.

The first docking terminal portion 23 may be disposed at any position of the tray main body 21 as long as it is capable of docking with the terminal in the test unit 3, and this is not particularly limited in this application. As shown in fig. 3, for example, the first butt terminal portion 23 is disposed near the edge of the upper surface of the tray main body 21, so that a sufficient space can be reserved for the frequency converter to be tested, which is beneficial to reducing the size of the tray.

In some embodiments, the first docking terminals 231 in the first docking terminal portion 23 may be arranged in groups. For example, the plurality of first docking terminals 231 may be divided into a strong current terminal group and a weak current terminal group according to the magnitude of current and/or voltage; alternatively, the first docking terminals 231 may be divided into a power supply terminal group, a signal input terminal group, a signal output terminal group, and the like according to the functions of the terminals.

And the test unit 3 is arranged at the test stations 13 and 13 'of the conveying device 1 and used for carrying out scanning test on the frequency converter to be tested on the test tray 2 when the conveying device 1 moves the frequency converter to be tested on the test tray 2 to the test stations 13 and 13'.

The number of the test units 3 is not limited in the embodiment of the application, and the test units can be set according to the test requirement. For example, in fig. 4, test units 3 and 3 'are provided at test stations 13 and 13', respectively, for performing a withstand voltage test and an IO test, respectively.

In some embodiments, referring to fig. 1 and 2, one of the test units 3 is taken as an example. The test unit 3 has at least one scanning module 31 for scanning the image identification code on the frequency converter to be tested after the test tray 2 is moved to the test station 13, so as to obtain the device information of the frequency converter to be tested.

The test system that this application embodiment provided utilizes conveyor 1 will bear the frequency converter automatic movement to the test station that awaits measuring on test tray 2, carries out the automatic scanning to the image identification code of the frequency converter that awaits measuring through scanning module 31 on test unit 3, can improve the degree of automation of scanning test, practices thrift the human cost, improves efficiency of software testing.

The fixing position of the scanning module 31 in the test unit 3 is not specifically limited in the embodiment of the present application, and may be set according to the type of the frequency converter to be tested and/or the position of the image identification code on the frequency converter to be tested.

For example, the frequency converter under test in the test tray 2 shown in fig. 2 is a semi-finished frequency converter with the image identification code at the position 24 on the top surface of the frequency converter under test, and the scan module 31 may be set as the scan module 311 shown in fig. 1. For another example, when the frequency converter under test is a finished device, the image identification code thereof is located at the position 24' of the side surface of the frequency converter under test, and then the scanning module 31 may be set as the scanning module 312 shown in fig. 1.

The number of the scan modules 31 in the test unit 3 is not particularly limited in the embodiment of the present application. For example, to accommodate testing of different types of frequency converters under test, two scan modules 311 and 312 may be provided in the test unit 3, as shown in fig. 1.

After the frequency converter to be tested is scanned by using the scanning module 31, the testing unit 3 provided in the embodiment of the present application is further configured to perform a power-on test on the frequency converter to be tested.

Referring to fig. 5 and 8, the testing unit 3 further includes a docking module 36, the docking module 36 is connected to a testing terminal (not shown), the docking module 36 includes a second docking terminal portion 361, and the second docking terminal portion 361 may include a plurality of second docking terminals 3611.

In some embodiments, the second docking terminals 3611 in the second docking terminal portion 361 may be disposed in a group. For example, the plurality of second docking terminals 3611 may be divided into a strong current terminal group and a weak current terminal group according to the magnitude of current and/or voltage; alternatively, the second docking terminal 3611 may be divided into a power supply terminal group, a signal input terminal group, a signal output terminal group, and the like according to its function.

The number and the specific structure of the second docking terminals 3611 in the second docking terminal portion 361 are not particularly limited in the embodiment of the present application, and may be set according to the number and the structure of the first docking terminals 231 in the first terminal portion 23.

The second docking terminal 361 can be docked with the first docking terminal 23 under the driving of the driving mechanism 37 to perform the power-on test on the frequency converter to be tested.

The driving mechanism 37 is configured to push the second docking terminal portion 361 after the test tray 2 is lifted to a height of a preset docking position, so that the second docking terminal 3611 in the second docking terminal portion 36 can be docked with the first docking terminal 231 in the first docking terminal portion 23, thereby implementing an electrical test on the frequency converter to be tested; and, after the test is completed, the connection of the second counterpart terminal portion 36 to the first counterpart terminal portion 23 is disconnected.

In the scan test, after the test tray 2 moves to the test station 13, the test tray 2 needs to be kept still relative to the test unit 3 to automatically scan the frequency converter to be tested on the test tray 2 and perform other tests.

Thus, in some embodiments, referring to fig. 5-7, a blocking device 32 may be provided in the test unit 3. The blocking means 32 is disposed below the conveying means 1 to block the movement of the test tray 2 after the test tray 2 is moved to the test station 13.

In some embodiments, the blocking device 32 may include a blocking swing arm 321 and a first cylinder 322.

Wherein, the position of the blocking swing arm 321 near the center has a hinge point. The blocking swing arm 321 may be hinged with a swing arm support 323 fixed to the frame 11 such that the blocking swing arm 321 may swing about its hinge point. Alternatively, the blocking swing arm 321 can also be directly hinged to the frame 11 of the conveying device via this hinge point.

The first cylinder 322 is disposed on the frame 11, and an extended end of the cylinder is connected to a first end of the blocking swing arm 321. When the extending end of the first cylinder 322 retracts, the second end of the blocking swing arm 321 can be driven to swing upwards to abut against the test tray 2. Referring to fig. 3, the side of the test tray 2 has a notch 211. When the blocking swing arm 321 swings, the second end of the blocking swing arm 321 can extend into the notch 211 to block and position the test tray 2. After the test unit 3 completes the test, the extending end of the first cylinder 322 extends out to drive the second end of the blocking swing arm 321 to swing downwards, so as to release the test tray 2.

In some embodiments, referring to fig. 5, the test unit 3 further includes a detecting unit 33 for detecting whether the test tray 2 is moved to the test station 13. The detecting unit 33 may be disposed at a side of one rail 111 of the frame 11 at a front end of the test station 13 such that the test tray 2 is right at the test station 13 when the detecting unit 33 detects the test tray 2.

The detecting unit 33 may be a conventional contact or non-contact sensor, which is not limited in the embodiments of the present application. For example, the detection unit 33 may be a photoelectric switch; for another example, the detection unit 33 may be a hall element; as another example, the detection unit 33 may also be a contact type limit switch.

In some embodiments, referring to fig. 5 and fig. 7, the test unit 3 further includes a lifting device 34, the lifting device 34 is disposed below the conveying device 1, and when the test tray 2 is blocked and positioned by the blocking device 32, the lifting device 34 can lift the test tray 2 to a height of a preset docking position. After the test is completed, the jacking device 34 puts the test tray 2 back on the conveyor 1.

With continued reference to fig. 5 and 7, the jacking device 34 may include a jacking platform 341 and a second cylinder 342.

The jacking platform 341 is a rectangular flat structure, and the upper surface of the jacking platform is a plane and can be abutted against the bottom surface of the test tray 2 to bear the test tray 2. In some embodiments, in order to prevent the test tray 2 from moving when being lifted, positioning pins 3411 may be provided on the lifting platform 341. As shown in fig. 4, the positioning pins 3411 are protruded from the upper surface of the lifting platform 341. The number of the positioning pins 3411 is not limited in the embodiment of the present invention, for example, two positioning pins 3411 are provided on the lifting platform 341 in fig. 4. Meanwhile, referring to fig. 3, the tray main body 21 is correspondingly provided with positioning holes 212, and when the lifting platform 341 lifts the test tray 2, the positioning pins 3411 on the lifting platform 341 can extend into the positioning holes 212 to limit the movement of the test tray 2. It is understood that the positions and the number of the positioning holes 212 may be set according to the structure of the lifting platform 341, which is not particularly limited in the embodiment of the present application.

The second cylinder 342 may be disposed on the frame 11, and an extending end of the second cylinder 342 is connected to the jacking platform 341, so that when the test tray 2 is moved to the test station 13, the second cylinder 342 can push the jacking platform 341 to ascend, and jack the frequency converter to be tested to a height position of a preset docking position; after the test is completed, the test tray 2 is put back on the conveying device 1.

In some embodiments, in order to avoid the tilting of the lifting platform 341 during the movement, a linear bearing assembly 343 may be further provided between the lifting platform 341 and the frame 11 to restrict the movement direction of the lifting platform 341. The linear bearing assembly 343 includes a linear bearing 3431 and a cylindrical shaft 3432, wherein the linear bearing 3431 may be connected to the frame 11 through a fixing plate 3422, and the cylindrical shaft 3432 is fixed to the lifting platform 341 and passes through a central hole of the linear bearing 3431 to be matched with the linear bearing 3431, so as to limit the moving direction of the lifting platform 3431. The number of the linear bearing assemblies 343 is not limited in the embodiments of the present application. For example, the jacking device 34 of fig. 4 includes 4 linear bearing assemblies 343.

In order to monitor whether the test tray 2 is tilted when being lifted, in some embodiments, referring to fig. 8, the test unit 3 further includes a correlation sensor 35 disposed at a side close to the conveyor 1. The correlation inductor 35 shown in fig. 8 includes a transmitting end 351 and a receiving end 352, and the receiving end 352 can receive a signal transmitted from the transmitting end 351 when an area between the receiving end 351 and the receiving end 352 is not blocked. When the lifting platform 341 is lifted, if the lifting platform 341 is inclined, the receiving end 352 of the test tray 2 on the lifting platform 341 or the lifting platform will be blocked from receiving the signal transmitted by the transmitting end 351, and the opposite sensor 35 can send out an alarm signal.

In some embodiments, as shown in fig. 5, the drive mechanism 37 includes a third cylinder 371. The protruding end of the third cylinder 371 is connected to the second butt terminal portion 36. When the third cylinder 371 is actuated, the second docking terminal portion 36 can move in a direction approaching or separating from the first docking terminal portion 23, and docking and separation between the docking terminals are achieved.

In some embodiments, referring to fig. 1, the test system provided in the embodiments of the present application may further include a control unit 4 for controlling each component to implement its function. The embodiment of the present application does not limit the control content of the control unit 4, for example, the control unit 4 may control the conveying chain driving mechanism, the first cylinder 322, the second cylinder 342, the third cylinder 371, and the like to drive the corresponding components to move, or control the scanning module 31 to scan. For example, the control unit 4 may receive signals from the sensors in the test system, or may perform test-side communication.

The embodiment of the present application does not specifically limit the form of the control unit 4. For example, the control unit 4 may include a plurality of independent control units for controlling different parts, respectively. For another example, the control unit 4 may be an integrated overall controller, which can control various parts in the test system.

The embodiments described above are only a part of the embodiments of the present application, and not all of the embodiments. The order in which the above-described embodiments are described is not intended to be a limitation on the preferred order of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be understood that in the embodiment of the present application, "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (8)

1. A frequency converter test system, the test system comprising:

the test tray is used for bearing the frequency converter to be tested and comprises: the first butt joint terminal part is used for connecting the frequency converter to be tested to a test end in a communication manner;

a conveyor for moving the test tray to at least one test station;

at least one test unit disposed at the at least one test station, the test unit comprising:

the scanning module is fixed on the testing unit and used for scanning the image identification code on the frequency converter to be tested after the testing tray is moved to the testing station;

the butt joint module is connected to a test end and comprises a second butt joint terminal part which is used for butt joint with the first butt joint terminal part so as to carry out power-on test on the frequency converter to be tested;

the driving mechanism is connected with the docking module and used for driving the second docking terminal part to be docked with the first docking terminal part when the test tray is moved to a preset docking position; and disconnecting the second butt joint terminal part from the first butt joint terminal part after the test is finished.

2. The test system of claim 1, wherein the test unit further comprises a blocking device disposed below the conveyor device for blocking positioning of the test tray after the test tray is moved to the test station and for releasing the test tray after completion of the test.

3. The test system as claimed in claim 2, wherein the blocking device comprises a blocking swing arm hinged to the conveying device, one end of the blocking swing arm is connected with the first cylinder, so that when the first cylinder acts, the other end of the blocking swing arm can swing around a hinge point of the blocking swing arm to block and position the test tray.

4. The test system of claim 2, wherein the test unit further comprises a detection unit for detecting whether the test tray is moved to the test station;

the blocking positioning the test tray after the test tray is moved to the test station comprises:

and when the detection unit detects that the test tray is moved to the test station, the blocking device is used for blocking and positioning the test tray.

5. The test system of claim 2, wherein the test unit further comprises a jacking device disposed below the conveying device, and when the test tray is blocked and positioned, the jacking device jacks the test tray to a height of a preset docking position; and, returning the test tray to the conveyor after the test is completed.

6. The test system of claim 5, wherein the jacking device comprises:

the jacking platform is used for bearing the test tray;

and the second cylinder is arranged below the jacking platform, is connected with the jacking platform and is used for driving the jacking platform to move.

7. The test system of claim 5, wherein the test unit further comprises:

and the correlation inductor is arranged on one side of the test unit, which is close to the conveying device, and is used for detecting whether the test tray is inclined or not when being jacked.

8. The testing system of claim 1, wherein the driving mechanism comprises a third cylinder, and a protruding end of the third cylinder is connected to the second docking terminal portion to drive the second docking terminal portion to move in a direction approaching or moving away from the first docking terminal portion, so that the second docking terminal portion is docked or undocked with the first docking terminal portion.

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