CN115436804A - Motor complete machine testing device - Google Patents

Motor complete machine testing device Download PDF

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Publication number
CN115436804A
CN115436804A CN202211156428.6A CN202211156428A CN115436804A CN 115436804 A CN115436804 A CN 115436804A CN 202211156428 A CN202211156428 A CN 202211156428A CN 115436804 A CN115436804 A CN 115436804A
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CN
China
Prior art keywords
motor
box
mounting
testing device
lead screw
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.)
Pending
Application number
CN202211156428.6A
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Chinese (zh)
Inventor
邓小亮
黄海军
刘辉武
罗峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangxi Xintian Auto Industry Co ltd
Original Assignee
Jiangxi Xintian Auto Industry Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangxi Xintian Auto Industry Co ltd filed Critical Jiangxi Xintian Auto Industry Co ltd
Priority to CN202211156428.6A priority Critical patent/CN115436804A/en
Publication of CN115436804A publication Critical patent/CN115436804A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34Testing dynamo-electric machines
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02General constructional details
    • G01R1/04Housings; Supporting members; Arrangements of terminals
    • G01R1/0408Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
    • G01R1/0425Test clips, e.g. for IC's
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/26Means for adjusting casings relative to their supports

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

The invention discloses a complete motor testing device which comprises a testing box, wherein a mounting plate is slidably mounted in the testing box, a clamping assembly used for clamping a motor to be tested is arranged on the upper surface of the mounting plate, a reciprocating lead screw is vertically and rotatably mounted at the bottom in the testing box, a moving block is sleeved on the reciprocating lead screw in a threaded manner, fixed rods are symmetrically and fixedly mounted on the surface of the moving block, the two fixed rods are fixedly connected with the mounting plate, a rotating rod is fixedly sleeved on the surface of the reciprocating lead screw, a scraping plate is symmetrically and fixedly mounted on the surface of the rotating rod, a transmission assembly used for rotating the reciprocating lead screw is arranged at the outer bottom of the testing box, and a plurality of support columns are fixedly mounted at the outer bottom of the testing box. The invention drives the water in the test box to rotate and drives the motor to be tested on the mounting plate to move up and down by matching the transmission assembly, the reciprocating screw rod, the rotating rod, the scraper plate, the moving block and the mounting plate, so as to improve the accuracy of the test, the test efficiency and the applicability of the motor.

Description

Motor complete machine testing device
Technical Field
The invention relates to the technical field of motor testing, in particular to a complete motor testing device.
Background
In multiple places such as agricultural irrigation, urban water supply, often need use a large amount of motors, so just improve greatly to the waterproof performance's of motor requirement, correspondingly, also need carry out the waterproof performance test to the motor of producing to guarantee the follow-up normal use of motor.
However, most of the existing testing devices only statically soak the motor in water, and after the motor is soaked for a certain time, the motor is taken out and insulation resistance is measured.
Disclosure of Invention
The invention aims to solve the following defects in the prior art that the existing waterproof test mode cannot well simulate the actual use condition, so that the test accuracy is not reliable enough, the test efficiency is lower, and the later use of a motor is influenced.
In order to achieve the purpose, the invention adopts the following technical scheme:
the motor complete machine testing device comprises a testing box, wherein an opening is formed in the top of the testing box, a box cover is rotatably arranged at the opening of the testing box, an installation plate is slidably arranged in the testing box, and a clamping assembly used for clamping a motor to be tested is arranged on the upper surface of the installation plate;
the testing box is characterized in that a reciprocating lead screw is vertically installed in the bottom of the testing box in a rotating mode, a moving block is sleeved with a reciprocating lead screw thread, fixed rods are symmetrically and fixedly installed on the surface of the moving block, the fixed rods are far away from one end of the moving block and fixedly connected with a mounting plate, a rotating rod is fixedly sleeved on the surface of the reciprocating lead screw, scraping plates are symmetrically and fixedly installed on the surface of the rotating rod through screw and nut fixing pieces, the scraping plates are in sliding contact with the bottom of the testing box, the reciprocating lead screw is far away from one end of the moving block and penetrates out of the testing box, a transmission assembly used for rotating the reciprocating lead screw is arranged at the outer bottom of the testing box, and a plurality of support columns are fixedly installed at the outer bottom of the testing box.
Preferably, the centre gripping subassembly includes that symmetry fixed mounting is in the backup pad of mounting panel upper surface and through the splint of many first expanding spring fixed mounting on the backup pad surface, two the spout has all been seted up on the backup pad surface, two equal slidable mounting has the slide bar in the spout, slide bar surface symmetry fixed mounting has the installation piece, two the installation piece is kept away from the equal fixed mounting of slide bar one end and is had the stopper, splint surface symmetry has seted up the spacing groove, two the stopper is inserted respectively and is established two spacing inslots.
Preferably, the installation cavity has been seted up in the mounting panel, the installation cavity level is equipped with the connecting rod, connecting rod fixed surface installs many second expanding spring, many connecting rod one end all with installation cavity inner wall fixed connection are kept away from to the second expanding spring, connecting rod fixed surface installs the kicking block, the kicking block is kept away from connecting rod one end and is worn out the mounting panel and in the motor contact that awaits measuring, the through-hole that is linked together with the installation cavity is seted up to mounting panel surface symmetry, two the slide bar penetrates two through-holes respectively and in connecting rod fixed connection.
Preferably, the transmission assembly comprises a servo motor fixedly installed at the outer bottom of the test box, a first bevel gear fixedly sleeved on an output shaft of the servo motor and a second bevel gear fixedly sleeved on the reciprocating screw rod, and the first bevel gear is in meshed connection with the second bevel gear.
Preferably, a plurality of slide rails are vertically and fixedly mounted in the test box, a plurality of first slide blocks are sleeved on the surfaces of the slide rails in a sliding mode, and the first slide blocks are fixedly connected with the mounting plate.
Preferably, the lower end of the support column is provided with a cross rod, the surface of the cross rod is sleeved with two second sliders and a third telescopic spring in a sliding manner, two ends of the third telescopic spring are fixedly connected with the two second sliders respectively, the upper surface and the lower surface of each of the two second sliders are rotatably provided with a first support rod and a second support rod respectively, the two first support rods are fixedly connected with the support column, and the two second support rods are fixedly provided with anti-skidding blocks at the ends far away from the second sliders.
Preferably, a water inlet and a water outlet are respectively formed in one side of the test box, a water pump is fixedly mounted on the surface of the test box, a water outlet pipe of the water pump is fixedly mounted in the water inlet, and a valve is fixedly mounted in the water outlet.
Preferably, the surfaces of the two clamping plates are fixedly provided with non-slip pads, and the non-slip pads are made of rubber.
Preferably, the longitudinal section of the limiting block is trapezoidal.
Compared with the prior art, the invention has the beneficial effects that:
1. under the cooperation through drive assembly, reciprocal lead screw, dwang and scraper blade, drive the test box water-logging and rotate, rethread movable block and mounting panel, the rotation of the reciprocal lead screw of cooperation drives the motor that awaits measuring of installing on the mounting panel and reciprocates to improve the accuracy of test, improve the suitability of efficiency of software testing and motor.
2. Through mutually supporting of backup pad, splint, first expanding spring, stopper and slide bar, can make things convenient for the fixed motor that awaits measuring of staff, prevent that the motor that awaits measuring from dropping from the mounting panel when the test.
Drawings
Fig. 1 is a schematic structural view of a front cross section of a complete machine testing device for a motor according to the present invention;
FIG. 2 is a schematic top view of a cross-sectional structure of a complete motor testing device according to the present invention;
FIG. 3 is an enlarged schematic view of A in FIG. 1;
FIG. 4 is an enlarged view of B in FIG. 1;
FIG. 5 is an enlarged view of C in FIG. 1;
fig. 6 is an enlarged structural schematic diagram of D in fig. 1.
In the figure: the testing device comprises a testing box 1, a box cover 2, a mounting plate 3, a motor to be tested 4, a reciprocating screw rod 5, a moving block 6, a fixing rod 7, a rotating rod 8, a scraping plate 9, a supporting column 10, a clamping plate 11, a supporting plate 12, a sliding rod 13, a mounting block 14, a limiting block 15, a first expansion spring 16, a connecting rod 17, a second expansion spring 18, a jacking block 19, a servo motor 20, a first bevel gear 21, a second bevel gear 22, a sliding rail 23, a first sliding block 24, a transverse rod 25, a second sliding block 26, a third expansion spring 27, a first supporting rod 28, a second supporting rod 29, an antiskid block 30, a water pump 31 and an antiskid pad 32.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-6, a motor complete machine testing device comprises a testing box 1, an opening is formed in the top of the testing box 1, a box cover 2 is rotatably installed at the opening of the testing box 1, a mounting plate 3 is slidably installed in the testing box 1, a clamping assembly used for clamping a motor 4 to be tested is arranged on the upper surface of the mounting plate 3, a water inlet and a water outlet are respectively formed in one side of the testing box 1, a water pump 31 is fixedly installed on the surface of the testing box 1, a water outlet pipe of the water pump 31 is fixedly installed in the water inlet, and a valve is fixedly installed in the water outlet.
When treating motor 4 and carrying out waterproof test, the staff at first opens case lid 2, then will await measuring motor 4 and place at 3 upper surfaces of mounting panel again, fixes motor 4 waiting to measure through centre gripping subassembly, then opens water pump 31 and pour into water into in to test box 1, and after the test, the delivery port is discharged from again to the water in the test box 1.
Vertical rotation of bottom installs reciprocal lead screw 5 in test box 1, reciprocal lead screw 5 threaded sleeve has movable block 6, movable block 6 surface symmetry fixed mounting has dead lever 7, two dead levers 7 keep away from movable block 6 one end all with mounting panel 3 fixed connection, reciprocal lead screw 5 surface fixation has cup jointed dwang 8, dwang 8 surface has scraper blade 9 through screw nut symmetry mounting fixed mounting, two scraper blades 9 all with test box 1 bottom sliding contact, reciprocal lead screw 5 keeps away from movable block 6 one end and wears out test box 1, test box 1 outer bottom is equipped with and is used for reciprocal lead screw 5 pivoted drive assembly, test box 1 outer bottom fixed mounting has many support columns 10, drive assembly includes the servo motor 20 of fixed mounting in test box 1 outer bottom, fix the first bevel gear 21 of cup joint on servo motor 20's output shaft and fix the second bevel gear 22 of cup joint on reciprocal lead screw 5, first bevel gear 21 is connected with second bevel gear 22 meshing.
After a worker fixes the motor 4 to be tested on the upper surface of the mounting plate 3 and injects water into the test box 1, the servo motor 20 in the transmission assembly is firstly opened (the servo motor 20 is the prior art and is not described in detail here), then an output shaft of the servo motor 20 drives the first bevel gear 21 to rotate and the second bevel gear 22 to rotate, because the second bevel gear 22 is fixedly sleeved on the surface of the reciprocating lead screw 5, the second bevel gear 22 and the reciprocating lead screw 5 rotate together, the reciprocating lead screw 5 drives the rotating rod 8 to rotate again, the rotating rod 8 drives the scraper 9 to rotate at the bottom of the test box 1, the scraper 9 drives the water in the test box 1 to rotate together while rotating, the reciprocating lead screw 5 rotates and the moving block 6 in threaded sleeve connection with the surface of the reciprocating lead screw 5 to vertically move up and down, because two ends of the fixed rod 7 are respectively fixedly connected with the mounting plate 3 and the moving block 6, the mounting plate 3 moves up and down along with the moving block 6, and the mounting plate 3 drives the motor 4 to be tested clamped on the upper surface of the mounting plate 3 to move up and down, the rotating water and down with the motor 4 to simulate the actual use condition, so as to improve the test accuracy and the test efficiency and the applicability of the motor.
The centre gripping subassembly includes backup pad 12 of symmetry fixed mounting at the mounting panel 3 upper surface and splint 11 through many first expanding spring 16 fixed mounting on backup pad 12 surface, the spout has all been seted up on two backup pad 12 surfaces, equal slidable mounting has slide bar 13 in two spouts, slide bar 13 surface symmetry fixed mounting has installation piece 14, two installation pieces 14 keep away from the equal fixed mounting of slide bar 13 one end has stopper 15, stopper 15 longitudinal section is trapezoidal, splint 11 surface symmetry has seted up the spacing groove, two stopper 15 insert respectively and establish two spacing inslots, the installation cavity has been seted up in the mounting panel 3, the level is equipped with connecting rod 17 in the installation cavity, connecting rod 17 surface fixed mounting has many second expanding spring 18, many second expanding spring 18 keep away from connecting rod 17 one end all with installation cavity inner wall fixed connection, connecting rod 17 surface fixed mounting has kicking block 19, kicking block 19 keeps away from connecting rod 17 one end and wears out mounting panel 3 and in the motor 4 contact that awaits measuring, the through-hole that is linked together with the installation cavity is seted up to connecting rod 3 surface symmetry, two slide bars 13 penetrate two through-hole respectively and in connecting rod 17 fixed connection.
Before the motor 4 to be tested is installed on the upper surface of the installation plate 3, a worker firstly moves the two clamping plates 11 towards the direction of the support plate 12 to compress the first expansion springs 16, the limiting block 15 is inserted into a limiting groove formed in the surface of the clamping plate 11, the longitudinal section of the limiting block 15 is trapezoidal, the inclined end of the limiting block 15 is in contact with the side wall of the limiting groove in the moving process, so that the limiting block 15 drives the installation block 14 to move downwards, then the sliding rod 13 is driven to move downwards in a sliding groove formed in the surface of the support plate 12, the two sliding rods 13 moving downwards drive the connecting rod 17 to vertically move downwards in the installation cavity, so that the second expansion springs 18 are compressed, when the limiting block 15 is completely inserted into the limiting groove, the limiting block 15 moves upwards under the action of the elastic force of the second expansion springs 18, so as to achieve a limiting effect on the clamping plate 11, when the motor 4 to be tested is placed on the upper surface of the installation plate 3 by the worker, the motor 4 to be tested is in contact with the top block 19 and extrudes the top block 19 to move downwards, then the connecting rod 17 to move downwards, the connecting rod 13 is driven to move downwards, and then the clamping effect on the clamping plate 4 to be tested is achieved, and the clamping of the first expansion springs 16, and the clamping plate 4 to be tested is removed, and the clamping motor 4 to be tested is further, and the clamping effect of the limiting block 15 is achieved.
Vertical fixed mounting has many slide rails 23 in the test box 1, and many slide rails 23 surface all slides and has cup jointed first slider 24, and a plurality of first sliders 24 all with mounting panel 3 fixed connection, the interact of first slider 24 and slide rail 23 can restrict mounting panel 3 and can only vertically reciprocate, can effectually prevent that movable block 6 from driving mounting panel 3 and when reciprocating, movable block 6 and reciprocal lead screw 5 take place relative rotation.
The lower extreme of support column 10 all is equipped with horizontal pole 25, horizontal pole 25 surface slip cup joints two second sliders 26 and third expanding spring 27, third expanding spring 27 both ends respectively with two second slider 26 fixed connection, the upper and lower surface of two second sliders 26 rotates first bracing piece 28 and second bracing piece 29 of installation respectively, two first bracing pieces 28 all with support column 10 fixed connection, two second bracing pieces 29 keep away from second slider 26 one end fixed mounting and have non slipping spur 30, when carrying out the waterproof test to the motor 4 that awaits measuring, test box 1 wholly can produce very big vibrations, when vibrations, two first bracing pieces 28 can drive two second sliders 26 round trip movement on horizontal pole 25, third expanding spring 27 compresses, then two second bracing pieces 29 drive non slipping spur 30 and reciprocate, through the continuous change of the elasticity of third expanding spring 27 compression, can effectually reduce the vibrations that test box 1 produced when using, non slipping spur 30 also can effectually prevent test box 1 from sliding.
Two splint 11 equal fixed mounting in surface has slipmat 32, and slipmat 32 is the rubber material, and slipmat 32 can increase splint 11 and the frictional force that awaits measuring between the motor 4 to the centre gripping effect of motor 4 is treated to increase splint 11.
According to the invention, firstly, a motor 4 to be tested is placed on a mounting plate 3 and fixed, then water is injected into a test box 1, then an output shaft of a suit motor 20 in a transmission assembly drives a first bevel gear 21 to rotate, and then drives a second bevel gear 22 to rotate, so that a reciprocating screw 5 is driven to rotate in the test box 1, through the rotation of the reciprocating screw 5, a moving block 6 drives the motor 4 to be tested on the mounting plate 3 to vertically move up and down in the test box 1, a rotating rod 8 drives a scraper 9 to rotate at the bottom of the test box 1, so that the water in the test box 1 is driven to rotate, and the actual use condition is simulated through the back and forth movement of the rotating water and the motor 4 to be tested, so that the test accuracy is improved, and the test efficiency and the applicability of the motor are improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (9)

1. A complete machine testing device for a motor comprises a testing box (1) and is characterized in that an opening is formed in the top of the testing box (1), a box cover (2) is rotatably installed at the opening of the testing box (1), an installation plate (3) is slidably installed in the testing box (1), and clamping components which are used for clamping a motor (4) to be tested are arranged on the upper surface of the installation plate (3);
vertical rotation of bottom installs reciprocal lead screw (5) in test box (1), reciprocal lead screw (5) screw thread has cup jointed movable block (6), movable block (6) surface symmetry fixed mounting has dead lever (7), two movable block (6) one end is kept away from in dead lever (7) all with mounting panel (3) fixed connection, reciprocal lead screw (5) surface fixing has connect dwang (8), dwang (8) surface has scraper blade (9), two through screw nut mounting symmetry fixed mounting scraper blade (9) all with test box (1) interior bottom sliding contact, test box (1) is worn out to movable block (6) one end is kept away from in reciprocal lead screw (5), test box (1) outer bottom is equipped with and is used for reciprocal lead screw (5) pivoted drive assembly, test box (1) outer bottom fixed mounting has many support columns (10).
2. The complete motor testing device as claimed in claim 1, wherein the clamping assembly comprises support plates (12) symmetrically and fixedly mounted on the upper surface of the mounting plate (3) and clamping plates (11) fixedly mounted on the surfaces of the support plates (12) through a plurality of first expansion springs (16), sliding grooves are formed in the surfaces of the two support plates (12), sliding rods (13) are slidably mounted in the sliding grooves, mounting blocks (14) are symmetrically and fixedly mounted on the surfaces of the sliding rods (13), limiting blocks (15) are fixedly mounted at the ends, away from the sliding rods (13), of the two mounting blocks (14), limiting grooves are symmetrically formed in the surfaces of the clamping plates (11), and the two limiting blocks (15) are inserted into the two limiting grooves respectively.
3. The complete machine testing device for the motor, according to claim 2, characterized in that a mounting cavity is formed in the mounting plate (3), a connecting rod (17) is horizontally arranged in the mounting cavity, a plurality of second expansion springs (18) are fixedly mounted on the surface of the connecting rod (17), one ends of the second expansion springs (18) far away from the connecting rod (17) are fixedly connected with the inner wall of the mounting cavity, a top block (19) is fixedly mounted on the surface of the connecting rod (17), one ends of the top block (19) far away from the connecting rod (17) penetrate through the mounting plate (3) and are in contact with a motor (4) to be tested, through holes communicated with the mounting cavity are symmetrically formed in the surface of the mounting plate (3), and the two sliding rods (13) penetrate through the two through holes respectively and are fixedly connected with the connecting rod (17).
4. The complete motor testing device as claimed in claim 1, wherein the transmission assembly comprises a servo motor (20) fixedly mounted at the outer bottom of the testing box (1), a first bevel gear (21) fixedly sleeved on an output shaft of the servo motor (20) and a second bevel gear (22) fixedly sleeved on the reciprocating screw rod (5), and the first bevel gear (21) and the second bevel gear (22) are in meshed connection.
5. The complete machine testing device of the motor, as set forth in claim 1, characterized in that a plurality of slide rails (23) are vertically and fixedly installed in the testing box (1), a first slide block (24) is slidably sleeved on the surfaces of the plurality of slide rails (23), and the plurality of first slide blocks (24) are fixedly connected with the mounting plate (3).
6. The complete machine testing device for the motors, as set forth in claim 1, characterized in that a cross bar (25) is provided at the lower end of each support column (10), two second sliders (26) and a third telescopic spring (27) are slidably sleeved on the surface of the cross bar (25), two ends of the third telescopic spring (27) are respectively fixedly connected with the two second sliders (26), a first support rod (28) and a second support rod (29) are respectively rotatably mounted on the upper and lower surfaces of the two second sliders (26), the two first support rods (28) are respectively fixedly connected with the support columns (10), and an anti-slip block (30) is fixedly mounted at one end of each second support rod (29) away from the second slider (26).
7. The complete machine testing device of the motor, as set forth in claim 1, characterized in that one side of the testing box (1) is respectively provided with a water inlet and a water outlet, a water pump (31) is fixedly installed on the surface of the testing box (1), a water outlet pipe of the water pump (31) is fixedly installed in the water inlet, and a valve is fixedly installed in the water outlet.
8. The complete machine testing device for the motors, as set forth in claim 2, is characterized in that anti-slip pads (32) are fixedly mounted on the surfaces of the two clamping plates (11), and the anti-slip pads (32) are made of rubber.
9. The complete machine testing device for the motor, as claimed in claim 2, wherein the longitudinal section of the limiting block (15) is trapezoidal.
CN202211156428.6A 2022-09-22 2022-09-22 Motor complete machine testing device Pending CN115436804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211156428.6A CN115436804A (en) 2022-09-22 2022-09-22 Motor complete machine testing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211156428.6A CN115436804A (en) 2022-09-22 2022-09-22 Motor complete machine testing device

Publications (1)

Publication Number Publication Date
CN115436804A true CN115436804A (en) 2022-12-06

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ID=84248931

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211156428.6A Pending CN115436804A (en) 2022-09-22 2022-09-22 Motor complete machine testing device

Country Status (1)

Country Link
CN (1) CN115436804A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115988809A (en) * 2023-03-20 2023-04-18 枣庄科技职业学院 Anti-radiation anti-static communication equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115988809A (en) * 2023-03-20 2023-04-18 枣庄科技职业学院 Anti-radiation anti-static communication equipment

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