High-precision static detection platform for electrical error of rotary transformer for new energy automobile

Abstract

The invention discloses a high-precision static detection platform for the electrical error of a rotary transformer for a new energy automobile, and the platform comprises an operation platform, the upper surface of the operation platform is fixedly connected with a centering clamping disc, the upper surface of the centering clamping disc is slidably connected with a second rack through a sliding rail, the upper surface of the centering clamping disc is slidably connected with a fourth rack through a sliding rail, and the upper surface of the fourth rack is fixedly connected with the operation platform. A base plate is fixedly connected to the upper surface of the centering clamping disc, a first rack is slidably connected to the upper surface of the base plate through a sliding rail, the output end of a second servo motor is connected with a worm and gear structure on the centering clamping disc and drives a straight gear to rotate, and a second fixed pressing plate and a second fixed pressing plate are driven to get close to the middle at the same time; according to the utility model, the rotary transformer stator placed on the rotary transformer supporting plate is clamped, and the rotary transformer stator is positioned in the center of the rotary transformer bracket, so that the fixation and automatic centering of different models of rotary transformers during detection are realized, and the rotary transformers are convenient and rapid to install during static detection.

Description

Technical Field

[0001] The present invention relates to the technical field of static detection of electrical errors of rotary transformers, and in particular to a high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles. Background Art

[0002] As a position sensor for permanent magnet motors, the rotary transformer is widely used in the fields of automobiles, aviation, and military. It is naturally simple in structure, easy to process, can operate continuously at high speed and for a long life, has the advantages of anti-interference, high and low temperature resistance, and humidity resistance, and is an irreplaceable component in the follow-up system and servo control system. The motor of new energy vehicles is also equipped with a rotary transformer. At present, the detection of rotary transformers in China usually uses a multimeter to measure its sine voltage, cosine voltage, and excitation voltage to determine its quality. However, the detection efficiency and accuracy of this method are still insufficient. Therefore, for the detection of rotary transformers, this scheme proposes a high-precision static detection platform for the electrical error of rotary transformers used in new energy vehicles. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a high-precision static detection platform for electrical errors of a rotary transformer used in new energy vehicles. By centering the clamping disk, the output end of the second servo motor is connected to the turbine worm structure and drives the spur gear to rotate, so that rack one, rack two, rack three and rack four are simultaneously retracted inward, and the first fixed pressure plate two and the second fixed pressure plate are respectively driven to move closer to the middle at the same time, so as to clamp the stator of the rotary transformer placed on the rotary transformer support plate, and at the same time make it centered on the rotary transformer support plate, so as to realize fixation and automatic centering of rotary transformers of different models during detection, so that the rotary transformer can be installed conveniently and quickly during static detection.

[0004] The present invention also provides a high-precision static detection platform for electrical errors of a rotary transformer used in the above-mentioned new energy vehicle, comprising: an operating table, the upper surface of the operating table is fixedly connected with a centering clamping disk, the upper surface of the centering clamping disk is slidably connected with a rack 2 through a slide rail, the upper surface of the centering clamping disk is slidably connected with a rack 4 through a slide rail, the upper surface of the centering clamping disk is fixedly connected with a pad, the upper surface of the pad is slidably connected with a rack 1 through a slide rail, the upper surface of the pad is slidably connected with a rack 3 through a slide rail, the lower surface of the centering clamping disk is fixedly connected with a motor bracket, the outer surface of the motor bracket is fixedly connected with a second servo motor, the output end of the second servo motor is connected with a spur gear through a worm gear mechanism, and the upper surface of the operating table is movably connected with a tester; The upper surface of the centering clamping disk is fixedly connected with a rotating bracket, and the upper surface of the centering clamping disk is fixedly connected with a supporting column, and the supporting column is provided with four groups, and the outer surface of the supporting column located on the right side is provided with a through hole, and the inside of the through hole is fixedly connected with a lead support plate, one end of the lead support plate is fixedly connected to the side surface of the rotating bracket, and the upper surface of the other end of the lead support plate is fixedly connected with a wiring terminal, and the upper end surfaces of the four groups of support columns are fixedly connected with connection disks; The left upper surface of the connecting disk is fixedly connected to slide 1, the right upper surface of the connecting disk is fixedly connected to slide 2, the upper end surface of slide 1 is fixedly connected to a top beam, the other end of the top beam is fixedly connected to slide 2, the center of the top beam is fixedly connected to a cylinder, the output end of the cylinder is fixedly connected to a connecting arm, the left side of the connecting arm is fixedly connected to a first movable arm, the right side of the connecting arm is fixedly connected to a second movable arm, one end of the first movable arm is fixedly connected to a first servo motor, and the right side surface of the first servo motor is fixedly connected to the second movable arm; the spur gears are respectively meshed with rack 1, rack 2, rack 3, and rack 4, the outer ends of rack 1 and rack 3 are rotatably connected to a second fixed pressure plate, and the outer ends of rack 2 and rack 4 are rotatably connected to a first fixed pressure plate.

[0005] According to a high-precision static detection platform for electrical errors of a rotary transformer used in new energy vehicles provided by the present invention, the upper surface of the pad is flush with the upper surface of the rack 2 located on the rack 4 and is cross-staggered, the rack 1 and the rack 3 are a group and mesh with the two sides of the spur gear respectively, the rack 2 and the rack 4 are a group and mesh with the two sides of the spur gear respectively, and the spur gear is located at the center of the centering clamping disk. The arrangement of the above two groups of racks can realize the simultaneous clamping of the four points of the rotary transformer, and realize that it is in a centering state after clamping.

[0006] According to a high-precision static detection platform for electrical errors of a resolver used in new energy vehicles provided by the present invention, the lower surface of the resolver bracket is movably connected to the upper surfaces of rack one and rack three, respectively, and the center of the resolver bracket is on the same vertical line as the centering clamping disk.

[0007] According to the high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles provided by the present invention, the outer surface of the support column on the right side is fixedly connected to the left and right sides with gravity pressure plate slideways, the inner sides of the gravity pressure plate slideways on both sides are slidably connected with gravity pressure plates, and the bottom of the gravity pressure plate is movably connected to the lead support plate. The downward pressure of the gravity pressure plate temporarily fixes the leads of the rotary transformer on the lead support plate during detection, effectively preventing the leads from falling and affecting the detection of the rotary transformer.

[0008] According to a high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles provided by the present invention, the inner surface of the first slide is slidably connected to the first movable arm, and the inner surface of the second slide is slidably connected to the second movable arm, so as to achieve smooth up and down movement of the first servo motor.

[0009] According to a high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles provided by the present invention, a tooling connection line is fixedly connected to the signal input end of the tester, and one end of the tooling connection line is connected to the wiring terminal through a connector. The detection circuit and the detector are interconnected by connecting the wiring terminal through the tooling connection line.

[0010] According to a high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles provided by the present invention, a control cabinet is fixedly connected to the left side of the lower surface of the operating table, and an instrument storage bin is fixedly connected to the right side of the lower surface of the operating table.

[0011] According to a high-precision static detection platform for electrical errors of a rotary transformer used in a new energy vehicle provided by the present invention, the output end of the first servo motor is detachably connected to a rotary transformer rotor fixing seat, and the central axis of the rotary transformer rotor fixing seat is on the same central axis as the spur gear, so that the rotary transformer rotor is in a centered position after the test installation, and is in a centered state when entering the interior of the rotary transformer stator.

[0012] Compared with the prior art, the present invention provides a high-precision static detection platform for electrical errors of a rotary transformer used in new energy vehicles. By using the output end of a second servo motor to connect a worm gear structure and drive the spur gear to rotate, rack one, rack two, rack three and rack four are simultaneously retracted inward, and the first fixed pressure plate two and the second fixed pressure plate are respectively driven to move toward the middle at the same time, so as to clamp the stator of the rotary transformer placed on the rotary transformer support plate and center it on the rotary transformer support plate, thereby realizing fixation and automatic centering of rotary transformers of different models during detection, and making the installation of the rotary transformer convenient and quick during static detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments; Figure 1 This is an overall structural diagram of a high-precision static detection platform for electrical errors of a rotary transformer used in a new energy vehicle of the present invention; Figure 2 A top view of a high-precision static detection platform for electrical errors of a rotary transformer used in a new energy vehicle of the present invention; Figure 3 A bottom view of a high-precision static detection platform for electrical errors of a rotary transformer used in a new energy vehicle of the present invention; Figure 4 A high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles of the present invention Figure 1 Enlarged view of point A in the middle; Figure 5 A schematic diagram of the structure of a centering clamping disk of a high-precision static detection platform for electrical errors of a rotary transformer used in a new energy vehicle of the present invention; Figure 6 This is a schematic diagram of the bottom structure of a middle clamping plate of a high-precision static detection platform for electrical errors of a rotary transformer used in new energy vehicles of the present invention.

[0014] Legend: 1. Operating table; 2. Centering clamping plate; 3. Support column; 4. Connecting plate; 5. Slide one; 6. Top beam; 7. First movable arm; 8. Connecting arm; 9. Cylinder; 10. Second movable arm; 11. First servo motor; 12. Slide two; 13. Tester; 14. Instrument storage compartment; 15. Control cabinet; 16. Spur gear; 17. Rotary transformer bracket; 18. Gravity pressure plate slideway; 19. Lead support plate; 20. Terminal block; 21. Tool connecting line; 22. Gravity pressure plate; 23. Pad; 24. Rack one; 25. Rack two; 26. Rack three; 27. Rack four; 28. First fixed pressure plate; 29. ​​Second fixed pressure plate; 30. Motor bracket; 31. Second servo motor; 32. Rotary transformer rotor fixing seat. DETAILED DESCRIPTION

[0015] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0016] Reference Figure 1-6The embodiment of the present invention is a high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles, comprising: an operating table 1, a centering clamping plate 2 is fixedly connected to the upper surface of the operating table 1, a rack 25 is slidably connected to the upper surface of the centering clamping plate 2 through a slide rail, a rack 4 27 is slidably connected to the upper surface of the centering clamping plate 2 through a slide rail, a pad 23 is fixedly connected to the upper surface of the centering clamping plate 2, and the upper surface of the pad 23 is flush with the upper surface of the rack 25 and the rack 4 27. They are staggered in a cross shape, rack one 24 and rack three 26 form a group and respectively mesh with both sides of the spur gear 16, rack two 25 and rack four 27 form a group and respectively mesh with both sides of the spur gear 16, and the spur gear 16 is located at the center of the centering clamping disk 2. A control cabinet 15 is fixedly connected to the left side of the lower surface of the operating table 1, and a working voltage for supplying various equipment in the device is installed inside the control cabinet 15. An instrument storage compartment 14 is fixedly connected to the right side of the lower surface of the operating table 1 for storing the tester 13 when not in use.

[0017] The upper surface of the pad 23 is slidably connected to a rack 1 24 through a slide rail, and the upper surface of the pad 23 is slidably connected to a rack 3 26 through a slide rail. The lower surface of the centering clamping disk 2 is fixedly connected to a motor bracket 30, and the outer surface of the motor bracket 30 is fixedly connected to a second servo motor 31. The driver selects the HARMONICHA-800A servo driver, which can control the speed and position accuracy very accurately, and can convert the voltage signal into torque and speed to drive the control object. The rotor speed of the servo motor is controlled by the input signal and can respond quickly. In the automatic control system, it is used as an actuator and has the characteristics of small electromechanical time constant and high linearity. It can convert the received electrical signal into angular displacement or angular velocity output on the motor shaft. The output end of the second servo motor 31 is connected to the spur gear 16 through a worm gear mechanism, and the spur gear 16 is meshed with rack 1 24, rack 2 25, rack 3 26, and rack 4 27 respectively. The outer ends of rack 1 24 and rack 3 26 are rotatably connected to the second fixed pressure plate 29, and the outer ends of rack 25 and rack 4 27 are rotatably connected to the first fixed pressure plate 28.

[0018] The upper surface of the operating table 1 is movably connected with a tester 13, which uses a phase gain analyzer, which is connected to the rotary transformer to be tested through a power amplifier, and the input end receives the excitation signal of the rotary transformer to be tested. The phase gain analyzer is also connected to the host computer. The bandwidth of the phase gain analyzer is set to 10uHz-1MHz, which meets the 10KHz excitation signal of the rotary transformer, and its angle test accuracy can reach the second level. Output 0.7V, 10KHZ sinusoidal signal, after the power amplifier, get 7vrms, 10KHZ excitation signal to the rotary transformer to be tested. The first servo motor 11 drives the rotary transformer rotor to rotate as a rotary indexing platform. The sine and cosine signals emitted by the stator winding of the rotary transformer are received in sequence through the reversing solenoid valve, and the excitation signal is obtained at the same time. The host computer obtains the sine and cosine signals emitted by the stator winding and the same direction components and corresponding phases of the voltage of the excitation signal from the phase gain analyzer through the serial port, and the parameters to be measured of the rotary transformer can be obtained by calculation.

[0019] A resolver bracket 17 is fixedly connected to the upper surface of the centering clamping disk 2 for placing the resolver stator. The upper surface of the centering clamping disk 2 is fixedly connected to the support column 3. There are four groups of support columns 3. The outer surface of the support column 3 on the right side is provided with a through hole. A lead support plate 19 is fixedly connected inside the through hole. One end of the lead support plate 19 is fixedly connected to the side surface of the resolver bracket 17. The other end upper surface of the lead support plate 19 is fixedly connected to a wiring terminal 20. The upper end surfaces of the four groups of support columns 3 are fixedly connected to the connecting disk 4. The lower surfaces of the resolver bracket 17 are movably connected to the upper surfaces of rack one 24 and rack three 26 respectively. The center of the resolver bracket 17 is on the same vertical line as the centering clamping disk 2.

[0020] The left upper surface of the connecting disk 4 is fixedly connected with a slide 5, the right upper surface of the connecting disk 4 is fixedly connected with a slide 2 12, the upper end surface of the slide 1 5 is fixedly connected with a top beam 6, the other end of the top beam 6 is fixedly connected to the slide 2 12, the center of the top beam 6 is fixedly connected with a cylinder 9, the output end of the cylinder 9 is fixedly connected with a connecting arm 8, the left side of the connecting arm 8 is fixedly connected with a first movable arm 7, the right side of the connecting arm 8 is fixedly connected with a second movable arm 10, one end of the first movable arm 7 is fixedly connected with a first servo motor 11, the right side surface of the first servo motor 11 is fixedly connected to the second movable arm 10, the output end of the first servo motor 11 is detachably connected with a rotating rotor fixing seat 32, and the central axis of the rotating rotor fixing seat 32 is on the same central axis as the spur gear 16.

[0021] The left and right sides of the outer surface of the right support column 3 are fixedly connected with gravity pressure plate slideways 18, and the inner sides of the gravity pressure plate slideways 18 on both sides are slidably connected with gravity pressure plates 22, and the bottom of the gravity pressure plates 22 is movably connected with the lead support plate 19. The inner surface of the slide 1 5 is slidably connected with the first movable arm 7, and the inner surface of the slide 2 12 is slidably connected with the second movable arm 10. The signal input end of the tester 13 is fixedly connected with a tooling connection line 21, and one end of the tooling connection line 21 is connected to the wiring terminal 20 through a connector.

[0022] Working principle: When in use, the stator of the rotary transformer is placed on the rotary transformer bracket 17, and the second servo motor 31 is started to drive the worm gear mechanism to rotate, so that the spur gear 16 connected to the output end of the worm gear mechanism rotates clockwise, driving rack 1 24, rack 25, rack 3 26 and rack 4 27 to converge from four directions to the center, and the first fixed pressure plate 28 and the second fixed pressure plate 29 act on the outer edge of the rotary transformer stator respectively to push the rotary transformer stator until it reaches the center point and is clamped synchronously, the second servo motor 31 stops rotating, the leads on the rotary transformer stator are arranged on the lead support plate 19, and are temporarily clamped and fixed by the gravity pressure plate 22.

[0023] Connect the leads to the terminal 20 according to the line sequence, connect the tester 13 to the terminal 20 through the specific tooling connection line 21, perform static detection on the stator coil seat of the rotary transformer, install the rotary transformer rotor on the rotary transformer rotor fixing seat 32, start the cylinder 9 to make the first servo motor 11 move downward, at this time, the rotary transformer rotor moves downward synchronously until it enters the interior of the rotary transformer stator, the cylinder 9 stops and remains stationary, and starts the first servo motor 11 to rotate. The rotation speed and direction of the first servo motor 11 are controlled by the servo driver.

[0024] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles, characterized in that: include: An operating table (1), wherein the upper surface of the operating table (1) is fixedly connected to a centering clamping disk (2), the upper surface of the centering clamping disk (2) is slidably connected to a rack 2 (25) via a slide rail, the upper surface of the centering clamping disk (2) is slidably connected to a rack 4 (27) via a slide rail, the upper surface of the centering clamping disk (2) is fixedly connected to a pad (23), the upper surface of the pad (23) is slidably connected to a rack 1 (24) via a slide rail, the upper surface of the pad (23) is slidably connected to a rack 3 (26) via a slide rail, the lower surface of the centering clamping disk (2) is fixedly connected to a motor bracket (30), the outer surface of the motor bracket (30) is fixedly connected to a second servo motor (31), the output end of the second servo motor (31) is connected to a spur gear (16) via a worm gear mechanism, and the upper surface of the operating table (1) is movably connected to a tester (13); The upper surface of the centering clamping disk (2) is fixedly connected to a rotating bracket (17), and the upper surface of the centering clamping disk (2) is fixedly connected to a support column (3), and the support column (3) is provided with four groups, and the outer surface of the support column (3) located on the right side is provided with a through hole, and the inside of the through hole is fixedly connected to a lead support plate (19), one end of the lead support plate (19) is fixedly connected to the side surface of the rotating bracket (17), and the upper surface of the other end of the lead support plate (19) is fixedly connected to a wiring terminal (20), and the upper end surfaces of the four groups of support columns (3) are fixedly connected to a connection disk (4); The left upper surface of the connecting disk (4) is fixedly connected to a slide frame 1 (5), the right upper surface of the connecting disk (4) is fixedly connected to a slide frame 2 (12), the upper end surface of the slide frame 1 (5) is fixedly connected to a top beam (6), the other end of the top beam (6) is fixedly connected to the slide frame 2 (12), the center of the top beam (6) is fixedly connected to a cylinder (9), the output end of the cylinder (9) is fixedly connected to a connecting arm (8), the left side of the connecting arm (8) is fixedly connected to a first movable arm (7), the right side of the connecting arm (8) is fixedly connected to a second movable arm (10), one end of the first movable arm (7) is fixedly connected to a first servo motor (11), and the right side surface of the first servo motor (11) is fixedly connected to the second movable arm (10); The spur gear (16) is meshedly connected with rack one (24), rack two (25), rack three (26), and rack four (27), respectively; the outer ends of rack one (24) and rack three (26) are both rotatably connected to a second fixed pressure plate (29), and the outer ends of rack two (25) and rack four (27) are both rotatably connected to a first fixed pressure plate (28).

2. The high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles according to claim 1 is characterized in that: The upper surface of the pad (23) and the rack 2 (25) are flush with the upper surface of the rack 4 (27) and are cross-staggered; the rack 1 (24) and the rack 3 (26) are a group and are respectively meshed with the two sides of the spur gear (16); the rack 2 (25) and the rack 4 (27) are a group and are respectively meshed with the two sides of the spur gear (16); the spur gear (16) is located at the center of the centering clamping disk (2).

3. The high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles according to claim 1 is characterized in that: The lower surface of the rotational variable bracket (17) is movably connected to the upper surfaces of the rack one (24) and the rack three (26), respectively, and the center of the rotational variable bracket (17) is on the same vertical line as the centering clamping disk (2).

4. The high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles according to claim 1 is characterized in that: The outer surface of the support column (3) on the right side is fixedly connected to gravity pressure plate slideways (18) on both sides, and the inner sides of the gravity pressure plate slideways (18) on both sides are slidably connected to gravity pressure plates (22), and the bottom of the gravity pressure plate (22) is movably connected to the lead support plate (19).

5. The high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles according to claim 1 is characterized in that: The inner surface of the slide frame 1 (5) is slidably connected to the first movable arm (7), and the inner surface of the slide frame 2 (12) is slidably connected to the second movable arm (10).

6. The high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles according to claim 1 is characterized in that: A tooling connection line (21) is fixedly connected to a signal input end of the tester (13); one end of the tooling connection line (21) is connected to a connection terminal (20) via a connector.

7. The high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles according to claim 1 is characterized in that: A control cabinet (15) is fixedly connected to the left side of the lower surface of the operating table (1), and an instrument storage compartment (14) is fixedly connected to the right side of the lower surface of the operating table (1).

8. The high-precision static detection platform for electrical errors of rotary transformers used in new energy vehicles according to claim 1 is characterized in that: The output end of the first servo motor (11) is detachably connected to a resolver rotor fixing seat (32), and the central axis of the resolver rotor fixing seat (32) and the spur gear (16) are on the same central axis.

Images