Quality test bench for frequency converter production and processing

Abstract

The invention relates to the technical field of frequency converter testing, in particular to a quality testing table for frequency converter production and processing, which comprises a working table and testers, the working table is provided with a plurality of groups of testers, and the quality testing table further comprises a driving assembly, a wiring assembly, a side positioning piece and a front positioning piece. According to the wiring device, the danger caused by manual wiring is avoided, the requirement for the operation level of workers is lowered, batch material testing can be achieved, and a first screw of the driving assembly rotates to drive a support of the wiring assembly to move front and back so as to test materials in a supporting area after positioning; the supporting area is matched with the rear positioning plate, the front positioning piece and the side positioning piece to achieve stable centering positioning of materials, and a tester is matched with the wiring assembly to conduct stable testing. After testing of multiple groups of materials is completed, the motor is turned over, the limiting space for the materials on the workbench is enlarged, the materials are conveniently taken out at the moment, and then new materials are assembled for testing.

Description

Technical Field

[0001] The invention relates to the technical field of frequency converter testing, in particular to a quality testing platform for frequency converter production and processing. Background Art

[0002] The inverter is a widely used power control device. It first converts fixed-frequency AC power into DC power, and then inverts the DC power into AC power with adjustable frequency and voltage, thereby controlling the speed of the motor and achieving efficient and precise control of the motor. During the production process, the inverters of the same specification batch need to be tested for quality with flush backs and wiring terminals on the same side. During the test, a test platform is required to support the inverters. If manual wiring is used, it is easy to be dangerous and requires long hours of work, which requires a high level of operation of the staff and makes it difficult to test materials in batches. If a carrier frame is used to carry the product, and a movable terminal detection structure is used, the inverter has a certain weight. When the product is carried on the carrier frame, it is easy for the bottom wall of the product to be difficult to align with the carrier frame, and impurities are easily retained at the corners of the carrier frame, which may lead to unstable positioning of subsequent products and affect the subsequent detection results. Summary of the invention

[0003] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a quality testing platform for frequency converter production and processing.

[0004] (II) Technical solution To achieve the above object, the present invention provides the following technical solution: a quality test bench for frequency converter production and processing, comprising a workbench and a tester, wherein the workbench is provided with a plurality of groups of testers, and further comprising: A driving assembly, the driving assembly comprising a motor, a support frame, a first screw, a first worm gear, a first worm and a first cover body, the support frame is arranged below the workbench, a first worm and a plurality of first worm gears are arranged in the rear side wall of the support frame, the first worm gear is meshed with the first worm, a plurality of first cover bodies are arranged below the workbench, a first screw connected to the center of the first worm gear is rotatably arranged at the rear side of the first cover body, and an output end of the motor passes through the support frame and is connected to the first worm; A wiring assembly, the wiring assembly includes an inverted L-shaped bracket, a lifter and a wiring terminal, the workbench is provided with a first sliding hole adapted to the first screw, the lower part of the bracket passes through the first sliding hole and is threadedly connected to the first screw, a plurality of groups of lifters are provided on the bracket, the output end of the lifter passes through the top wall of the bracket and is connected to the wiring terminal, and the lifter and the wiring terminal are electrically connected to the tester; The first cover body is also provided with side positioning members for positioning materials on the left and right sides; The front side of the first cover body is also provided with a front positioning piece for positioning materials.

[0005] In order to facilitate the centering and positioning of materials, the present invention has been improved in that the side positioning member includes a second worm, a second worm wheel, a side plate, a second screw and a side positioning plate; the second worm and several groups of second worm wheels are arranged in the first cover body, and several groups of second worm wheels are meshed with the second worm; side plates connected to the workbench are also arranged on the left and right sides of the first cover body; second screws rotatably connected to the corresponding side plates are symmetrically arranged on the left and right sides of the center of the second worm wheel at the front and rear ends; the side positioning plate is in the shape of a lower opening; a second sliding hole adapted to the free end of the side positioning plate is also arranged on the workbench; the second sliding hole passes through the bottom of the side positioning plate and is threadedly connected to the second screw.

[0006] In order to facilitate the provision of buffering limit, the present invention has been improved in that the side positioning member also includes a buffer member, and the buffer member includes an elastic member and a buffer plate. The corresponding side positioning plate is also provided with an elastic member near the corresponding first cover body, and the two ends of the elastic member are respectively connected to the buffer plate and the side positioning plate.

[0007] In order to facilitate and stably shift and center the material, the present invention has been improved in that the side positioning member also includes a shifting member, and the shifting member includes a third worm, a third worm wheel, a rotating shaft, an elliptical block and a second cover body, and the third worm is symmetrically arranged on the left and right sides of the center of the second worm wheel located in the middle part of the first cover body, and the third worm passes through the first cover body and extends into the second cover body to engage with the third worm wheel, and a rotating shaft that passes through the workbench is arranged above the center of the third worm wheel, and an elliptical block for shifting the material to the center is arranged above the rotating shaft, and the elliptical block is arranged in the lower opening of the side positioning plate.

[0008] In order to facilitate pushing the material into the detection area, the present invention is improved in that the front positioning member includes a third screw and a front positioning plate, a third screw rotatably connected to the front side wall of the support frame is arranged on the front side of the second worm, the third screw and the first screw have opposite thread directions, and a third sliding hole matched with the third screw is also arranged on the workbench, the front positioning plate is T-shaped, and the third sliding hole passes through the bottom of the front positioning plate and is threadedly connected to the third screw.

[0009] In order to facilitate the movement of supporting materials, the present invention has an improvement in that a supporting area is further provided on the workbench, the outer diameter of the supporting area is smaller than the top projection of the material, a plurality of groups of arc blocks are provided in the supporting area, and the bottom wall of the elliptical block is higher than the top wall of the arc block.

[0010] Preferably, the elastic member comprises a spring and a telescopic rod, the spring is sleeved on the telescopic rod, and both ends of the spring and the telescopic rod are respectively connected to the side positioning plate and the buffer plate.

[0011] Preferably, the workbench is further provided with a plurality of groups of rear positioning plates, and the rear positioning plates are arranged between the supporting area and the first sliding hole.

[0012] Preferably, rollers contacting with materials are provided at the largest intervals on both sides of the elliptical block, grooves matching with the rollers are provided on the elliptical block, and the upper and lower sides of the rollers are connected to the elliptical block via connecting shafts.

[0013] Preferably, a reinforcing rib is further provided at one end of the bracket away from the lifter.

[0014] (III) Beneficial effects Compared with the prior art, the present invention provides a quality test bench for inverter production and processing, which has the following beneficial effects: The quality test bench for the production and processing of the frequency converter avoids the danger caused by manual wiring through the cooperation of the driving component and the wiring component, reduces the requirements on the operating level of the staff, and can realize batch material testing. The rotation of the first screw of the driving component can drive the bracket of the wiring component to move forward and backward, so as to test the material in the support area after positioning; When the motor starts, the first worm drives the first worm wheel to rotate, and further, the first screw drives the second worm wheel to rotate. The wiring assembly moves toward the material direction under the drive of the first screw, and the second worm wheel located in the middle part drives the third worm wheel to rotate, and then the third worm wheel drives the rotating shaft to rotate, and the elliptical block cooperates with the roller to push the material to the center. During this process, the rotating second worm drives the third screw in the opposite direction of the first screw to rotate, and the front positioning member pushes the centered material to move to the rear side of the workbench until the material is fixed front and back. At this time, the wiring assembly is just above the material joint, and the rollers on the left and right sides do not support and position the material. For this reason, the second worm wheels on the front and back sides of the first cover body drive the second screw to rotate, and the two sets of side support plates cooperate with the buffer parts to realize the side buffer positioning of the material, so as to ensure the stability of the equipment during the test and will not move easily. The support area cooperates with the rear positioning plate, the front positioning member and the side positioning member to realize the stable center positioning of the material, and the tester is used to cooperate with the wiring assembly for stable testing; After completing the test of multiple groups of materials, the motor flips over and the limiting space for the materials on the workbench becomes larger, making it convenient to take out the materials and then assemble new materials for testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main view of the frequency converter assembled in the limited position state of the structure of the present invention; Figure 2It is a schematic diagram of the main view of the structure of the present invention in the limited position state; Figure 3 It is a bottom view schematic diagram of the structure of the present invention in the limited position state; Figure 4 It is a partial front view schematic diagram of the structure of the present invention in the limited position state; Figure 5 It is a partial bottom view schematic diagram of the structure of the present invention in the limited position state; Figure 6 The structure of the present invention Figure 1 A partial enlarged schematic diagram in the middle; Figure 7 The structure of the present invention Figure 5 A partial enlarged schematic diagram of point B in the middle; Figure 8 It is a schematic diagram of the main view of the feeding frequency converter in the unrestricted state of the structure of the present invention; Fig. 9 It is a bottom view schematic diagram of the structure of the present invention in an unrestricted state; Fig.10 It is a schematic diagram of the main view of the structure of the present invention in an unrestricted state; Fig.11 The structure of the present invention Figure 8 A partial enlarged schematic diagram of point C in the middle; Fig.12 The structure of the present invention Figure 1 A partial enlarged schematic diagram of point D in the middle.

[0016] In the figure: 1. workbench; 2. tester; 3. support frame; 4. first screw; 5. first worm gear; 6. first worm; 7. first cover; 8. bracket; 9. lifter; 10. terminal; 11. second worm; 12. second worm gear; 13. side plate; 14. second screw; 15. side positioning plate; 16. spring; 17. telescopic rod; 18. buffer plate; 19. third worm; 20. third worm gear; 21. rotating shaft; 22. elliptical block; 23. roller; 24. second cover; 25. third screw; 26. front positioning plate; 27. arc block; 28. rear positioning plate; 29. ​​connecting shaft; 30. reinforcing rib; 31. motor. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 11A quality test bench for frequency converter production and processing, comprising a workbench 1 and a tester 2, wherein the workbench 1 is provided with a plurality of testers 2, and further comprising: a driving assembly, wherein the driving assembly comprises a motor 31, a support frame 3, a first screw 4, a first worm wheel 5, a first worm 6 and a first cover 7, wherein the support frame 3 is provided below the workbench 1, wherein a first worm 6 and a plurality of first worm wheels 5 are provided in a rear side wall of the support frame 3, wherein the first worm wheel 5 meshes with the first worm 6, wherein a plurality of first cover 7 are provided below the workbench 1, wherein a first cover 7 is provided with a first worm wheel 6 and a first worm wheel 6 and a first worm wheel 6 are provided in a rear side wall of the support frame 3, wherein the first worm wheel 5 meshes with the first worm 6, wherein a plurality of first cover 7 are provided below the workbench 1, wherein a first cover 7 is provided with a first worm wheel 6 and a first worm wheel 6 is provided in a rear side wall of the first cover 7. A first screw 4 connected to the center of the worm gear 5, the output end of the motor 31 passes through the support frame 3 and is connected to the first worm 6; a wiring assembly, the wiring assembly includes an inverted L-shaped bracket 8, a lifter 9 and a terminal 10, a first sliding hole adapted to the first screw 4 is provided on the workbench 1, the lower part of the bracket 8 passes through the first sliding hole and is threadedly connected to the first screw 4, a plurality of groups of lifters 9 are provided on the bracket 8, the output end of the lifter 9 passes through the top wall of the bracket 8 and is connected to the terminal 10, and the lifter 9 and the terminal 10 are electrically connected to the tester 2; The port of the inverter being tested is located on one side, and the bottom wall is flush. The port part of the inverter is a stepped structure. If observed vertically, it is easily blocked by the wiring assembly. For this reason, the wiring assembly is arranged on the rear side of the workbench 1. At the same time, in this embodiment, the top wall of the bracket 8 of the wiring assembly is lower than the inverter to prevent fooling. When testing the inverter, its port needs to be wired to cooperate with the tester 2 for testing. The inverter needs to be positioned after placement, and the motor 31 is started. The motor 31 drives the first worm 6 in the support frame 3 to rotate, and then the first worm 6 drives the first worm wheel 5 to rotate, and the first worm wheel 5 drives the first screw 4 to rotate, and the first screw 4 drives the first cover The side positioning pieces on the body 7 position the material left and right, and the first screw 4 drives the front positioning piece on the first cover body 7 to position the material for front feeding. With the rotation of the first screw 4, several groups of brackets 8 move toward the front end of the workbench 1 under the drive of the first screw 4 and the limit of the first slide hole. When the side positioning pieces and the front positioning pieces complete the positioning, the corresponding wiring terminal 10 is just above the corresponding port of the inverter. By starting the lifter 9 and driving the corresponding port to descend, the wiring test of the corresponding port can be completed. The data is recorded and the results are displayed by the tester 2. A reinforcing rib 30 is also provided at the end of the bracket 8 away from the lifter 9 to ensure the strength of the bracket 8.

[0019] In the actual use process, if a multi-driving source is used to drive the side positioning member, it is easy to have the problem of movement interference between various components. Therefore, the side positioning member includes a second worm 11, a second worm gear 12, a side plate 13, a second screw rod 14 and a side positioning plate 15. The second worm 11 and several groups of second worm gears 12 are arranged in the first housing 7. Several groups of the second worm gears 12 are engaged with the second worm 11. Side plates 13 connected to the workbench 1 are further arranged on the left and right sides of the first housing 7. Second screw rods 14 rotatably connected to the corresponding side plates 13 are symmetrically arranged on the left and right sides of the centers of the second worm gears 12 at the front and rear ends. The side positioning plate 15 is in a downward-opening U shape. A second sliding hole adapted to the free end of the side positioning plate 15 is further arranged on the workbench 1. The side positioning plate 15 penetrates through the second sliding hole downward and is threadedly connected to the second screw rod 14. The motor 31 serves as the driving source. The first screw rod 4 drives the second worm 11 in the first housing 7 to rotate. The second worm 11 drives several groups of second worm gears 12 to rotate simultaneously. The second screw rods 14 on the circumferences of the second worm gears 12 on the front and rear sides rotate stably under the support of the side plates 13. The U-shaped side positioning plate 15 can abut against the side wall of the frequency converter to perform left-right centering limitation on it.

[0020] If only the above-mentioned side positioning member is used for centering limitation, it is necessary to ensure the precise stroke of the side positioning plate 15 and the front positioning member, and the precision requirement for the structure is relatively high, which is not convenient for debugging and maintenance. Therefore, the side positioning member further includes a buffer member. The buffer member includes an elastic member and a buffer plate 18. An elastic member is further arranged on one side of the corresponding side positioning plate 15 close to the corresponding first housing 7. The two ends of the elastic member are respectively connected to the buffer plate 18 and the side positioning plate 15. When the side positioning plate 15 moves, the elastic member supports the buffer plate 18 to first contact the side wall of the frequency converter, and supports and limits the side wall of the frequency converter. In this embodiment, the elastic member includes a spring 16 and a telescopic rod 17. The spring 16 is sleeved on the telescopic rod 17. The two ends of the spring 16 and the telescopic rod 17 are respectively connected to the side positioning plate 15 and the buffer plate 18. The spring 16 facilitates the reset of the buffer plate 18, and the telescopic rod 17 ensures the stability of the movement of the buffer plate 18.

[0021] Since the inverter itself has a certain weight, the inverter placed on the workbench 1 has a certain friction with the workbench 1. If the inverter is pushed to the center only by the buffer, it is easy for the buffer on one side to be over-compressed, and the buffer on the other side has not yet contacted the side wall of the inverter. For this reason, the side positioning member also includes a toggle member, which includes a third worm 19, a third worm wheel 20, a rotating shaft 21, an elliptical block 22 and a second cover body 24. The third worm 19 is symmetrically arranged on the left and right sides of the center of the second worm wheel 12 located in the middle part of the first cover body 7. The third worm 19 passes through the first cover body 7 and extends into The second cover body 24 is meshed with the third worm gear 20, and a rotating shaft 21 penetrating the workbench 1 is arranged above the center of the third worm gear 20, and an elliptical block 22 for centering the material is arranged above the rotating shaft 21, and the elliptical block 22 is arranged in the lower opening of the side positioning plate 15. With the rotation of the second worm 11, the second worm gear 12 located in the middle part of the first cover body 7 rotates. At this time, the third worm 19 drives the third worm gear 20 to rotate under the support of the first cover body 7 and the second cover body 24, and the third worm gear 20 drives the rotating shaft 21 to rotate. At first, the distance between the ends of the elliptical blocks 22 on the left and right sides is the largest. , which is convenient for placing the frequency converter. When the distance between the ends of the two groups of elliptical blocks 22 on the left and right sides is the smallest, the elliptical blocks 22 will move the frequency converter to the center. The elliptical blocks 22 can rotate, and then cooperate with the buffer for continuous feeding to achieve stable centering and limiting of the material. It should be noted that the elliptical blocks 22 are set as four groups, which can stably limit the centering of the frequency converter. However, if only the elliptical blocks 22 are used to limit the side walls of the frequency converter, the elliptical blocks 22 will slide and rub against the material, which may easily cause scratches on the side walls of the frequency converter. For this reason, the elliptical blocks 22 are also provided with rollers 23 in contact with the material at the largest distance on both sides. The elliptical block 22 is provided with a groove adapted to the roller 23. The upper and lower sides of the roller 23 are connected to the elliptical block 22 by a connecting shaft 29. The contact between the roller 23 and the side wall of the inverter is rolling friction, which can avoid scratches on the side wall of the inverter. The buffer comes into contact with the material first, which does not affect the feeding of the front positioning member. As the front positioning member is fed, the material moves, and each time the end face spacing between the elliptical blocks 22 on the left and right sides is the smallest, the inverter is centered and positioned once until the front positioning member completes the feeding, the elastic member is in a compressed state, and the inverter is not easy to move left and right on the workbench 1.

[0022] In this embodiment, the front positioning member includes a third screw 25 and a front positioning plate 26. The front side of the second worm 11 is provided with a third screw 25 rotatably connected to the front side wall of the support frame 3. The third screw 25 and the first screw 4 have opposite screw directions. The workbench 1 is also provided with a third sliding hole adapted to the third screw 25. The front positioning plate 26 is T-shaped. The third sliding hole passes through the bottom of the front positioning plate 26 and is threadedly connected to the third screw 25. When the second worm 11 rotates, the third screw 25 is driven to rotate. The front positioning plate 26 pushes the inverter to feed under the limitation of the third sliding hole and the drive of the third screw 25. In this embodiment, a support area is also provided on the workbench 1. The outer diameter of the support area is smaller than the top projection of the material. A plurality of groups of arc blocks 27 are provided in the support area. The bottom wall of the elliptical block 22 is higher than the top wall of the arc block 27. The arc block 27 can stably support the inverter with a flush bottom surface while reducing the friction between the inverter and the workbench 1, thereby facilitating its stable movement. The arc block 27, as a preferred example of this embodiment, also has the effect of facilitating the cleaning of the workbench 1 and ensuring the stable positioning of the subsequent inverter. If the back side of the inverter is a heat dissipation fin, a workbench 1 with a flush upper surface can be used. The heat dissipation fin itself reduces the contact area with the workbench 1. Several groups of rear positioning plates 28 are also provided on the workbench 1. The rear positioning plates 28 are arranged between the supporting area and the first sliding hole. When the current positioning plate 26 pushes the inverter to contact the rear positioning plate 28, the buffers of the left and right positioning plates 15 are in a compressed state, and the terminal 10 is just above the inverter port.

[0023] The overall limit structure of the frequency converter has open structures on both sides and the front side, which is convenient for cleaning the workbench 1 and ensuring the stability of subsequent frequency converter loading. The corresponding cover body is used to cover the corresponding worm gear and worm, in order to prevent the worm gear and worm from being affected by external dust or foreign matter, and to ensure the stability of equipment operation; In conjunction with the instruction manual Fig.12 When the limit structure cooperates with the wiring assembly connected to the tester 2 to test the inverter, the inclined visual space makes it easy to understand whether the corresponding wiring terminal 10 is in contact with the corresponding terminal of the inverter, ensuring the convenience of equipment operation.

[0024] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0025] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0026] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A quality test bench for frequency converter production and processing, comprising a workbench and a tester, wherein the workbench is provided with a plurality of groups of testers, characterized in that: It further includes: A driving component, the driving component includes a motor, a support frame, a first screw rod, a first worm gear, a first worm and a first cover body. The support frame is arranged below the workbench. A first worm and several groups of first worm gears are arranged inside the rear side wall of the support frame. The first worm gears are meshed with the first worm. Several groups of first cover bodies are arranged below the workbench. A first screw rod connected to the center of the first worm gear is rotatably arranged at the rear side of the first cover body. The output end of the motor penetrates through the support frame and is connected to the first worm. A wiring component, the wiring component includes an L-shaped bracket, a lifter and a wiring terminal. A first sliding hole adapted to the first screw rod is arranged on the workbench. The bracket penetrates through the first sliding hole downward and is threadedly connected to the first screw rod. Several groups of the lifters are arranged on the bracket. The output end of the lifter penetrates through the top wall of the bracket and is connected to the wiring terminal. The lifter and the wiring terminal are electrically connected to the tester. A side positioning member for positioning the material left and right is further arranged on the first cover body. A front positioning member for positioning the material is further arranged on the front side of the first cover body.

2. The quality test bench for inverter production and processing according to claim 1 is characterized in that: The side positioning member includes a second worm, a second worm gear, a side plate, a second screw rod and a side positioning plate. The second worm and several groups of second worm gears are arranged inside the first cover body. The several groups of second worm gears are meshed with the second worm. Side plates connected to the workbench are further arranged on the left and right sides of the first cover body. Second screw rods rotatably connected to the corresponding side plates are symmetrically arranged on the left and right sides of the centers of the second worm gears at the front and rear ends. The side positioning plate is in a C shape with an open bottom. A second sliding hole adapted to the free end of the side positioning plate is further arranged on the workbench. The side positioning plate penetrates through the second sliding hole downward and is threadedly connected to the second screw rod.

3. The quality test bench for inverter production and processing according to claim 2 is characterized in that: The side positioning member further includes a buffer member, the buffer member includes an elastic member and a buffer plate. An elastic member is further arranged on the side of the corresponding side positioning plate close to the corresponding first cover body. The two ends of the elastic member are respectively connected to the buffer plate and the side positioning plate.

4. The quality test bench for frequency converter production and processing according to claim 3 is characterized in that: The side positioning member further includes a拨动 member, the拨动 member includes a third worm, a third worm gear, a rotating shaft, an elliptical block and a second cover body. Third worms are symmetrically arranged on the left and right sides of the centers of the second worm gears in the middle part inside the first cover body. The third worms penetrate through the first cover body and extend into the second cover body to be meshed with the third worm gears. A rotating shaft penetrating through the workbench is arranged above the center of the third worm gear. An elliptical block for aligning the material by拨动 is arranged above the rotating shaft. The elliptical block is arranged in the open bottom of the side positioning plate.

5. The quality test bench for inverter production and processing according to claim 4 is characterized in that: The front positioning member includes a third screw rod and a front positioning plate. A third screw rod rotatably connected to the front side wall of the support frame is arranged in front of the second worm. The third screw rod has a screw direction opposite to that of the first screw rod. A third sliding hole adapted to the third screw rod is further arranged on the workbench. The front positioning plate is in a T shape. The front positioning plate penetrates through the third sliding hole downward and is threadedly connected to the third screw rod.

6. The quality test bench for frequency converter production and processing according to claim 5, characterized in that: The workbench is also provided with a support area, the outer diameter of which is smaller than the top projection of the material, and a plurality of groups of arc blocks are provided in the support area, and the bottom wall of the elliptical block is higher than the top wall of the arc block.

7. The quality test bench for inverter production and processing according to claim 6, characterized in that: The elastic member comprises a spring and a telescopic rod, the spring is sleeved on the telescopic rod, and both ends of the spring and the telescopic rod are respectively connected to the side positioning plate and the buffer plate.

8. The quality test bench for inverter production and processing according to claim 7, characterized in that: The workbench is also provided with a plurality of groups of rear positioning plates, and the rear positioning plates are arranged between the supporting area and the first sliding hole.

9. The quality test bench for frequency converter production and processing according to claim 8, characterized in that: Rollers in contact with materials are also arranged at the largest intervals on both sides of the elliptical block, grooves matching the rollers are arranged on the elliptical block, and upper and lower sides of the rollers are connected to the elliptical block via connecting shafts.

10. A quality test bench for inverter production and processing according to claim 9, characterized in that: The bracket is further provided with a reinforcing rib at one end away from the lifter.

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