A frequency converter test platform

Abstract

The present application relates to the technical field of frequency converter testing, and particularly discloses a frequency converter testing platform, which comprises a testing platform, wherein the testing platform comprises a lifting positioning structure, the lifting positioning structure can simultaneously perform positioning of the frequency converter, connection of the electric connector and safety protection during testing, and the lifting positioning structure is connected with adjustable clamping assemblies capable of clamping different models of frequency converters, the lifting positioning structure is arranged in the frequency converter testing platform, so that the driving motor in the lifting positioning structure can drive the frequency converter on the moving connecting plate to move upward through the transmission structure, so that the frequency converter is automatically connected with the connector of the testing instrument, when the lifting screw moves upward, four adjustable clamping assemblies are driven to move to the middle through the transmission structure, and then the frequency converter is clamped and positioned, thereby facilitating automatic connection of the frequency converter and the connector of the testing instrument.

Description

Technical Field

[0001] This invention relates to the field of frequency converter testing technology, specifically to a frequency converter testing platform. Background Technology

[0002] Inverters mainly consist of rectification, filtering, inversion, braking units, drive units, detection units, and microprocessor units. Inverters have a wide range of applications, therefore they need to be tested before leaving the factory. However, the testing of inverter drive boards is generally done manually, which is slow, inefficient, and increases testing costs. Currently, manual testing fixtures are used, where the drive board to be tested is placed on a test platform and the connectors are manually connected. Since the drive board lacks an adjustable positioning structure, this affects the inverter's positioning during testing, leading to placement deviations and impacting the stability of the connector connections. Furthermore, since the inverter is exposed to air during testing, electric arcs can occur at the connections, affecting testing safety. To address these issues, a dedicated inverter testing platform is needed. Summary of the Invention

[0003] The purpose of this invention is to provide a frequency converter testing platform to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A frequency converter testing platform includes a testing platform with a lifting and positioning structure. The lifting and positioning structure enables simultaneous positioning of the frequency converter, connection of electrical connectors, and safety protection during testing. An adjustable clamping component capable of holding different models of frequency converters is connected to the lifting and positioning structure. A testing instrument is provided on the end face of the testing platform corresponding to the lifting and positioning structure. A controller is connected to the testing platform.

[0005] The lifting and positioning structure includes a connecting bracket, which is fixedly connected to the end face of the test platform. A connecting housing is connected to the connecting bracket. A drive motor is fixedly connected to the side wall of the connecting housing via a connecting seat. A drive rod is fixedly connected to the drive end of the drive motor via a coupling. A drive helical gear is fixedly connected to the side wall of the drive rod. A driven helical gear is symmetrically meshed on the tooth surface of the drive helical gear. A lifting screw is connected to the center of the driven helical gear. A movable bracket is fixedly connected to the end face of the lifting screw. A movable connecting plate is fixedly connected to the end face of the movable bracket. In a preferred embodiment of the present invention, a fixed connecting seat is connected to the end face of the connecting box, a connecting rod is rotatably connected to the fixed connecting seat via a connecting shaft, the other end of the connecting rod is rotatably connected to a movable slider via a connecting shaft, a connecting slide rail is connected to the movable slider, the connecting slide rail is fixedly connected to the movable bracket, an L-shaped fixing block is fixedly connected to the end face of the movable slider, a protective cover is symmetrically rotatably connected to the end face of the movable connecting plate via a hinge, a fixed connecting plate is symmetrically connected to the side wall of the connecting bracket, a connecting rod is symmetrically rotatably connected to the side wall of the fixed connecting plate via a connecting shaft, and the other end of the connecting rod is rotatably connected to the side wall of the protective cover via a connecting shaft.

[0006] As a preferred embodiment of the present invention, the adjustable clamping assembly includes a connecting plate connected to the side wall of the L-shaped fixing block. A rotating screw is connected to the connecting plate, and a shaft retainer is connected to the side wall of the connecting plate and located on the cylindrical surface of the rotating screw. A connecting screw sleeve is connected to one end of the rotating screw, and a movable clamping plate is fixedly connected to one end of the connecting screw sleeve. Fixed connecting plates are symmetrically fixedly connected to the opposing surfaces of the connecting plate and the movable clamping plate, and a scissor-type bracket is connected to the fixed connecting plate.

[0007] As a preferred embodiment of the present invention, the tester is connected to an electrical connector, and both the tester and the drive motor are connected to the controller via wires. The drive rod is rotatably connected to the connecting housing via a bearing, wherein the drive rod is connected inside the bearing.

[0008] In a preferred embodiment of the present invention, the driven helical gear is connected to the connecting housing via a bearing seat, wherein the driven helical gear and the bearing seat are connected by a rotatable connection, and the driven helical gear and the lifting screw are connected by a threaded connection.

[0009] As a preferred embodiment of the present invention, a groove is provided on the movable slider and corresponding to the connecting slide rail, wherein the connecting slide rail and the groove are connected by a sliding connection, and a groove is provided on the end face of the movable connecting plate and corresponding to the L-shaped fixing block, wherein the L-shaped fixing block is slidably connected in the groove.

[0010] In a preferred embodiment of the present invention, the rotating screw is rotatably connected to the connecting plate via a bearing, wherein the outer wall of the rotating screw is connected to the inside of the bearing, and one end of the rotating screw has a hole for the wrench to rotate.

[0011] As a preferred embodiment of the present invention, the connection between the rotating screw and the connecting screw sleeve is a threaded connection, and one end of the scissor-type bracket is rotatably connected to the fixed connecting plate through a connecting shaft.

[0012] As a preferred embodiment of the present invention, a sliding groove is provided on the fixed connecting plate corresponding to the connecting rod at the other end of the scissor-type bracket, wherein the connecting rod is slidably connected in the sliding groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are: In this invention, a lifting and positioning structure is set in the inverter testing platform. The drive motor in the lifting and positioning structure can drive the inverter on the moving connecting plate to move upward through the transmission structure, so that the inverter and the test instrument connector can be automatically connected. When the lifting screw moves upward, it drives four sets of adjustable clamping components to move towards the center through the transmission structure, thereby clamping and positioning the inverter, which facilitates the automatic connection of the inverter and the test instrument connector. When the moving connecting plate moves upward, it drives the protective cover to close through the transmission structure, so that the inverter positioning, electrical connection and safety protection work can be carried out simultaneously during the inverter testing.

[0014] In this invention, by setting an adjustable clamping component in the inverter testing platform, the distance between the connecting plate and the moving clamping plate can be adjusted by rotating the rotating screw in the adjustable clamping component through the transmission structure, which facilitates the clamping and positioning of various types of inverters and improves the application range of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the isolateral structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 for Figure 2 Partial structural diagram; Figure 4 for Figure 3 Partial structural diagram; Figure 5 for Figure 4 Partial structural diagram; Figure 6 for Figure 5 Partial structural diagram; Figure 7 This is a schematic diagram of the adjustable clamping assembly of the present invention; Figure 8 for Figure 7 A partial structural diagram.

[0016] In the diagram: 1. Test platform; 2. Lifting and positioning structure; 201. Connecting bracket; 202. Connecting housing; 203. Drive motor; 204. Drive rod; 205. Drive helical gear; 206. Driven helical gear; 207. Lifting screw; 208. Moving bracket; 209. Moving connecting plate; 210. Fixed connecting seat; 211. Connecting rod; 212. Moving slider; 213. Connecting slide rail; 214. L-shaped fixing block; 215. Protective cover; 216. Fixed connecting plate; 217. Connecting rod; 3. Adjustable clamping assembly; 301. Connecting plate; 302. Rotating screw; 303. Shaft retainer; 304. Connecting screw sleeve; 305. Moving clamp; 306. Fixed connecting plate; 307. Scissor-type bracket; 4. Tester; 5. Controller. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] For an example, please refer to... Figure 1-8 The present invention provides a technical solution: A frequency converter testing platform includes a testing platform 1, which includes a lifting and positioning structure 2. The lifting and positioning structure 2 enables the frequency converter to be positioned, the electrical connectors to be connected, and safety protection measures to be taken during testing. An adjustable clamping component 3 capable of holding different models of frequency converters is connected to the lifting and positioning structure 2. A testing instrument 4 is set on the end face of the testing platform 1 and corresponding to the lifting and positioning structure 2. A controller 5 is connected to the testing platform 1.

[0019] In this embodiment, reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The lifting and positioning structure 2 includes a connecting bracket 201, which is fixedly connected to the end face of the test platform 1. A connecting housing 202 is connected to the connecting bracket 201. A drive motor 203 is fixedly connected to the side wall of the connecting housing 202 via a connecting seat. A drive rod 204 is fixedly connected to the drive end of the drive motor 203 via a coupling. A drive helical gear 205 is fixedly connected to the side wall of the drive rod 204. A driven helical gear 206 is symmetrically meshed on the tooth surface of the drive helical gear 205. A lifting screw 207 is connected to the center of the driven helical gear 206. A movable bracket 208 is fixedly connected to the end face of the lifting screw 207. A movable connecting plate 209 is fixedly connected to the end face of the movable bracket 208. A fixed connecting seat 210 is connected, and a connecting rod 211 is rotatably connected to the fixed connecting seat 210 via a connecting shaft. The other end of the connecting rod 211 is rotatably connected to a movable slider 212 via a connecting shaft. A connecting slide rail 213 is connected to the movable slider 212, and the connecting slide rail 213 is fixedly connected to the movable bracket 208. An L-shaped fixing block 214 is fixedly connected to the end face of the movable slider 212. A protective cover 215 is symmetrically connected to the end face of the movable connecting plate 209 via a hinge. A fixed connecting plate 216 is symmetrically connected to the side wall of the connecting bracket 201. A connecting rod 217 is symmetrically connected to the side wall of the fixed connecting plate 216 via a connecting shaft. The other end of the connecting rod 217 is rotatably connected to the side wall of the protective cover 215 via a connecting shaft. Based on the above structure and the connection relationship of the above structure, the controller 5 controls the drive motor 203 to run. When the drive end of the drive motor 203 rotates, it drives the drive rod 204 to rotate. When the drive rod 204 rotates, it drives the drive helical gear 205 to rotate. The drive helical gear 205 drives two sets of driven helical gears 206 to rotate. When the driven helical gears 206 rotate, they drive two sets of lifting screws 207 to move upward. The lifting screws 207 drive the inverter on the moving connecting plate 209 to move upward through the moving bracket 208. When the lifting screws 207 move upward, they drive the moving slider 212 to move on the side wall of the connecting slide rail 213 through the fixed connecting seat 210 and the connecting rod 211. When the moving slider 212 moves, it drives the four sets of adjustable clamping components 3 to move towards the middle through the L-shaped fixing block 214, thereby clamping the inverter. When the moving connecting plate 209 moves upward, it drives the protective cover 215 to close through the fixed connecting plate 216 and the connecting rod 217. Furthermore, the tester 4 is connected to an electrical connector, and both the tester 4 and the drive motor 203 are connected to the controller 5 via wires, so that the operation of the tester 4 and the drive motor 203 can be controlled by the controller 5. Furthermore, the drive rod 204 is rotatably connected to the connecting housing 202 via a bearing, wherein the drive rod 204 is connected inside the bearing, and the driven helical gear 206 is connected to the connecting housing 202 via a bearing seat, wherein the driven helical gear 206 is rotatably connected to the bearing seat, and the driven helical gear 206 is threadedly connected to the lifting screw 207. The movable slider 212 is provided with a groove corresponding to the connecting slide rail 213, wherein the connecting slide rail 213 is slidably connected to the groove. The end face of the movable connecting plate 209 is provided with a groove corresponding to the L-shaped fixing block 214, wherein the L-shaped fixing block 214 is slidably connected in the groove. When the drive rod 204 rotates, it can drive the movable connecting plate 209 to rise and fall. In this embodiment, reference Figure 1 , Figure 7 and Figure 8 The adjustable clamping assembly 3 includes a connecting plate 301, which is connected to the side wall of the L-shaped fixing block 214. A rotating screw 302 is connected to the connecting plate 301. A shaft retainer 303 is connected to the side wall of the connecting plate 301 and located on the cylindrical surface of the rotating screw 302. A connecting screw sleeve 304 is connected to one end of the rotating screw 302. A movable clamping plate 305 is fixedly connected to one end of the connecting screw sleeve 304. Fixed connecting plates 306 are fixedly and symmetrically connected to the opposing surfaces of the connecting plate 301 and the movable clamping plate 305. A scissor-type bracket 307 is connected to the fixed connecting plate 306. Based on the above structure and the connection relationship of the above structure, the rotating screw 302 is manually rotated. When the rotating screw 302 rotates, the distance between the connecting plate 301 and the movable clamping plate 305 is adjusted through the connecting screw sleeve 304, the fixed connecting plate 306 and the scissor bracket 307. Furthermore, the rotating screw 302 is rotatably connected to the connecting plate 301 via a bearing, wherein the outer wall of the rotating screw 302 is connected to the inside of the bearing, and one end of the rotating screw 302 is provided with a hole for the wrench to rotate. The rotating screw 302 is connected to the connecting sleeve 304 by a threaded connection. One end of the scissor bracket 307 is rotatably connected to the fixed connecting plate 306 via a connecting shaft. The fixed connecting plate 306 is provided with a sliding groove corresponding to the connecting rod at the other end of the scissor bracket 307, wherein the connecting rod is slidably connected in the sliding groove. When the rotating screw 302 is rotated, the distance between the connecting plate 301 and the moving clamp 305 can be adjusted.

[0020] Workflow of the present invention: When using the inverter test platform, first connect the device to the power supply so that the device is in working state. Then, according to the shape of the inverter, manually rotate the rotating screw 302. When the rotating screw 302 rotates, the distance between the connecting plate 301 and the moving clamp 305 is adjusted through the connecting screw sleeve 304, the fixed connecting plate 306 and the scissor bracket 307. The frequency converter is then placed on the end face of the movable connecting plate 209. The controller 5 controls the drive motor 203 to run. When the drive end of the drive motor 203 rotates, it drives the drive rod 204 to rotate. When the drive rod 204 rotates, it drives the drive helical gear 205 to rotate. The drive helical gear 205 drives two sets of driven helical gears 206 to rotate. When the driven helical gears 206 rotate, they drive two sets of lifting screws 207 to move upwards. The lifting screws 207, via the movable bracket 208, drive the frequency converter on the movable connecting plate 209 to move upwards. When the lifting screw 207 moves upward, it drives the moving slider 212 to move on the side wall of the connecting slide rail 213 via the fixed connecting seat 210 and the connecting rod 211. When the moving slider 212 moves, it drives the four sets of adjustable clamping components 3 to move towards the middle via the L-shaped fixing block 214, thereby clamping the frequency converter. When the moving connecting plate 209 moves upward, it drives the protective cover 215 to close via the fixed connecting plate 216 and the connecting rod 217, thereby realizing the positioning of the frequency converter, the connection of the electrical connector, and the safety protection work during testing.

[0021] The controller 5, tester 4 and drive motor 203 used in this invention are all existing known electrical devices, and all can be purchased and used directly on the market. Their structure, circuit and control principle are all existing known technologies. Therefore, the structure, circuit and control principle of the controller 5, tester 4 and drive motor 203 will not be described in detail here.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A frequency converter testing platform, comprising a testing platform (1), characterized in that: The test platform (1) includes a lifting and positioning structure (2), wherein the lifting and positioning structure (2) enables the inverter to be positioned, the electrical connector to be connected, and the safety protection work to be carried out simultaneously during the test. An adjustable clamping component (3) capable of clamping different models of inverters is connected to the lifting and positioning structure (2). A tester (4) is provided on the end face of the test platform (1) and corresponding to the lifting and positioning structure (2). A controller (5) is connected to the test platform (1).

2. The inverter testing platform according to claim 1, characterized in that: The lifting and positioning structure (2) includes a connecting bracket (201), which is fixedly connected to the end face of the test platform (1). A connecting box (202) is connected to the connecting bracket (201). A drive motor (203) is fixedly connected to the side wall of the connecting box (202) via a connecting seat. A drive rod (204) is fixedly connected to the drive end of the drive motor (203) via a coupling. A drive helical gear (205) is fixedly connected to the side wall of the drive rod (204). A driven helical gear (206) is symmetrically meshed on the tooth surface of the drive helical gear (205). A lifting screw (207) is connected to the center of the driven helical gear (206). A movable bracket (208) is fixedly connected to the end face of the lifting screw (207). A movable connecting plate (209) is fixedly connected to the end face of the movable bracket (208).

3. The inverter testing platform according to claim 2, characterized in that: A fixed connecting seat (210) is connected to the end face of the connecting box (202). A connecting rod (211) is rotatably connected to the fixed connecting seat (210) via a connecting shaft. The other end of the connecting rod (211) is rotatably connected to a movable slider (212) via a connecting shaft. A connecting slide rail (213) is connected to the movable slider (212). The connecting slide rail (213) is fixedly connected to the movable bracket (208). An L-shaped fixing block (214) is fixedly connected to the end face of the movable slider (212). A protective cover (215) is symmetrically connected to the end face of the movable connecting plate (209) via a hinge. A fixed connecting plate (216) is symmetrically connected to the side wall of the connecting bracket (201). A connecting rod (217) is symmetrically connected to the side wall of the fixed connecting plate (216) via a connecting shaft. The other end of the connecting rod (217) is rotatably connected to the side wall of the protective cover (215) via a connecting shaft.

4. The inverter testing platform according to claim 3, characterized in that: The adjustable clamping assembly (3) includes a connecting plate (301), which is connected to the side wall of the L-shaped fixing block (214). A rotating screw (302) is connected to the connecting plate (301). A shaft retainer (303) is connected to the side wall of the connecting plate (301) and located on the cylindrical surface of the rotating screw (302). A connecting threaded sleeve (304) is connected to one end of the rotating screw (302). A movable clamping plate (305) is fixedly connected to one end of the connecting threaded sleeve (304). Fixed connecting plates (306) are fixedly and symmetrically connected to the opposing surfaces of the connecting plate (301) and the movable clamping plate (305). A scissor-type bracket (307) is connected to the fixed connecting plate (306).

5. The inverter testing platform according to claim 4, characterized in that: The tester (4) is connected to an electrical connector. The tester (4) and the drive motor (203) are both connected to the controller (5) via wires. The drive rod (204) is rotatably connected to the connecting housing (202) via a bearing, wherein the drive rod (204) is connected inside the bearing.

6. The inverter testing platform according to claim 4, characterized in that: The driven helical gear (206) is connected to the connecting housing (202) through a bearing seat. The driven helical gear (206) is connected to the bearing seat by a rotatable connection, and the driven helical gear (206) is connected to the lifting screw (207) by a threaded connection.

7. The inverter testing platform according to claim 4, characterized in that: The movable slider (212) has a groove corresponding to the connecting slide rail (213), wherein the connecting slide rail (213) and the groove are connected by a sliding connection. The end face of the movable connecting plate (209) has a groove corresponding to the L-shaped fixing block (214), wherein the L-shaped fixing block (214) is slidably connected in the groove.

8. The inverter testing platform according to claim 4, characterized in that: The rotating screw (302) is rotatably connected to the connecting plate (301) via a bearing, wherein the outer wall of the rotating screw (302) is connected to the inside of the bearing, and one end of the rotating screw (302) is provided with a hole for the wrench to rotate.

9. The inverter testing platform according to claim 4, characterized in that: The rotating screw (302) and the connecting screw sleeve (304) are connected by a threaded connection, and one end of the scissor bracket (307) is rotatably connected to the fixed connecting plate (306) through a connecting shaft.

10. A frequency converter testing platform according to claim 3, characterized in that: A sliding groove is provided on the fixed connecting plate (306) and corresponding to the connecting rod at the other end of the scissor bracket (307), wherein the connecting rod is slidably connected in the sliding groove.

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