Frequency converter detection device

Abstract

The utility model relates to the field of frequency converter detection, in particular to a frequency converter detection device, which comprises a test board and a detection assembly, the test board is used for placing a frequency converter, the test board is provided with a test groove matched with an inclined power connection end, and the test groove is electrically connected with the inclined power connection end. The detection assembly comprises a moving module and a power mechanism arranged at the output end of the moving module, a detection piece is arranged at the output end of the power mechanism, the moving module is used for driving the power mechanism to move to correspond to the test groove, and the power mechanism is used for driving the detection piece to rotate to be aligned with the test groove. When the inclined power connection end is detected, the detection piece is controlled by the moving module to move to correspond to the test groove, and the detection piece can be rotatably inserted into the test groove which is aligned with the inclined power connection end and matched with the inclined power connection end through the power mechanism, so that poor contact caused by the fact that the detection end cannot be aligned with the inclined power connection end for detection is reduced, and the detection precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter testing, and specifically to a frequency converter testing device. Background Technology

[0002] A frequency converter is a power control device that uses frequency conversion technology and microelectronics to control an AC motor by changing the frequency of the power supply. Before being assembled and shipped from the factory, frequency converters require performance testing of all their electrical terminals, as illustrated in the frequency converter structure disclosed in Chinese utility model patent CN2730020Y. Figure 1 As shown, the power connection terminals of the frequency converter have two configuration methods: forward and oblique.

[0003] Existing inverter testing devices are typically suitable for testing the forward-facing electrical terminals. The testing end used for testing usually moves in a straight line to directly contact the electrical terminal for testing. However, when testing the obliquely oriented electrical terminals, it is not easy for the testing end and the obliquely oriented electrical terminal to align for testing, resulting in poor contact and affecting the testing accuracy. Utility Model Content

[0004] The technical solution adopted by this utility model to solve its technical problem is: to provide a frequency converter detection device, comprising:

[0005] A test bench is provided for placing a frequency converter. The test bench is provided with a test slot adapted to the inclined power connection terminal, and the test slot and the inclined power connection terminal are electrically connected.

[0006] The detection component includes a moving module and a power mechanism disposed at the output end of the moving module. The output end of the power mechanism is provided with a detection element. The moving module is used to drive the power mechanism to move to correspond to the test slot, and the power mechanism is used to drive the detection element to rotate and insert into the test slot.

[0007] Furthermore, the power mechanism includes a support plate, a connector rotatably mounted on the support plate, a first connecting rod rotatably connected to the connector, and a guide member rotatably connected to the first connecting rod. The support plate is connected to the output end of the moving module, and the guide member is used to control the first connecting rod to perform linear motion.

[0008] Furthermore, the rotational connection point of the first connecting rod and the connector does not coincide with the rotational center of the connector, and the first connecting rod is eccentrically positioned relative to the connector.

[0009] Furthermore, the guide component is a telescopic cylinder or a lead screw transmission mechanism.

[0010] Furthermore, the detection element is arc-shaped.

[0011] Furthermore, the end of the detection element facing the guide is the detection end, and the detection end is positioned towards the test slot.

[0012] Furthermore, the connector is provided with a mounting groove that is compatible with the detection component.

[0013] Furthermore, the mobile module includes a first mobile cylinder and a frame, the guide is disposed on the frame, the frame is connected to the output end of the first mobile cylinder, and the frame is fixedly connected to the support plate.

[0014] Furthermore, the orientation of the first movable cylinder and the orientation of the guide member intersect each other.

[0015] Furthermore, the test platform is also equipped with a baffle, which is used to cover the test slot.

[0016] The beneficial effects of this utility model are as follows: It provides a frequency converter testing device, including a test bench and a testing component. The test bench is used to place the frequency converter, and a test slot adapted to the angled electrical connection is provided on the test bench. The test slot and the angled electrical connection are electrically connected. The testing component includes a moving module and a power mechanism disposed at the output end of the moving module. A detection element is disposed at the output end of the power mechanism. The moving module is used to drive the power mechanism to move to correspond with the test slot, and the power mechanism is used to drive the detection element to rotate to align with the test slot. When testing the angled electrical connection, the moving module controls the detection element to move to correspond with the test slot, and the power mechanism enables the detection element to rotate to align with the test slot adapted to the angled electrical connection, thereby reducing poor contact caused by the detection end not aligning with the angled electrical connection and improving the testing accuracy. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] In the picture: Figure 1 An overall structural diagram of a frequency converter testing device provided by this utility model;

[0019] Figure 2 for Figure 1 The diagram shows the three-dimensional structure of the inverter testing device after the baffle is hidden.

[0020] Figure 3 for Figure 2 A three-dimensional structural diagram of the middle section;

[0021] Figure 4 for Figure 3 A three-dimensional structural diagram from another perspective;

[0022] Figure 5 for Figure 3 A three-dimensional structural diagram of the middle section;

[0023] Figure 6 for Figure 5 Exploded view of the structure shown;

[0024] Figure 7 for Figure 5 A cross-sectional view of the structure shown.

[0025] Explanation of reference numerals in the attached drawings: 100, Inverter testing device; 10, Test bench; 11, Test slot; 12, Baffle; 20, Testing component; 21, Power mechanism; 211, Support plate; 212, Connector; 2121, Mounting slot; 213, First connecting rod; 214, Guide component; 2141, Output block; 22, Testing component; 221, Testing end; 23, First moving cylinder; 24, Frame. Detailed Implementation

[0026] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the present utility model, and therefore only shows the components relevant to the present utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] Please refer to Figure 1-7 A frequency converter testing device 100 is provided, including a test bench 10 and a testing component 20. The test bench 10 is used to place the frequency converter, and the testing component 20 is movably disposed on the test bench 10.

[0028] The test bench 10 is provided with a test slot 11 adapted to the angled electrical connection terminal, and the test slot 11 is electrically connected to the angled electrical connection terminal. The angled electrical connection terminal is not shown in the figure. Specifically, the tilt angle of the test slot 11 is the same as that of the angled electrical connection terminal, and the test slot 11 is provided with a circuit node (not shown in the figure) electrically connected to the angled electrical connection terminal. The test bench 10 is also provided with a baffle 12, which is used to shield the test slot 11.

[0029] The detection component 20 includes a moving module and a power mechanism 21 disposed at the output end of the moving module. The output end of the power mechanism 21 is provided with a detection element 22. The moving module is used to drive the power mechanism 21 to move to correspond with the test slot 11, and the power mechanism 21 is used to drive the detection element 22 to rotate to align with the test slot 11.

[0030] The power mechanism 21 includes a support plate 211, a connector 212 rotatably mounted on the support plate 211, a first connecting rod 213 rotatably connected to the connector 212, and a guide 214 rotatably connected to the first connecting rod 213. The support plate 211 is connected to the output end of the moving module, and the guide 214 is mounted on the frame 24. The guide 214 is used to control the first connecting rod 213 to perform linear motion.

[0031] More specifically, the connector 212 is a sector-shaped block, and its circular boundary matches the rotation trajectory of the detection element 22. The rotation connection point between the first link 213 and the connector 212 does not coincide with the rotation center of the connector 212; the first link 213 is eccentrically positioned relative to the connector 212. The rotation connection point between the connector 212 and the support plate 211 is located below the connection point between the first link 213 and the connector 212. The sector shape of the connector 212, compared to a square shape, better matches the rotation trajectory of the detection element 22, facilitating its rotation.

[0032] The detection element 22 is arc-shaped, and the connector 212 has a mounting groove 2121 that matches the detection element 22. Specifically, the detection element 22 is a probe, one end of which is located in the mounting groove 2121 and fixed relative to the connector 212, and the other end of which is a detection end 221 that contacts the circuit node in the test slot 11. Specifically, in this embodiment, multiple test slots 11 are arranged side by side along the width direction of the frame 24. Multiple detection elements 22 are arranged corresponding to the number of test slots 11.

[0033] The moving module includes a first moving cylinder 23 and a frame 24. The frame 24 and the output end of the first moving cylinder 23 are fixedly connected, and the frame 24 and the support plate 211 are fixedly connected. The setting direction of the first moving cylinder 23 and the setting direction of the guide 214 intersect each other. Specifically, the first moving cylinder 23 is set along the height direction of the frame 24, the guide 214 is set along the length direction of the frame 24, and the output end of the guide 214 is set towards the test slot 11. The detection end 221 on the detection element 22 is closer to the direction of the output end of the guide 214 than the other end of the detection element 22, and the detection end 221 points towards the test slot 11 below. Specifically, the detection end 221 on the detection element 22 is closer to the output block 2141 than the other end of the detection element 22.

[0034] Furthermore, the guide member 214 is a telescopic cylinder or a lead screw transmission mechanism. In this embodiment, the guide member 214 is a telescopic cylinder, and the output end of the guide member 214 is provided with an output block 2141, which is rotatably connected to the first connecting rod 213.

[0035] Reference Figure 6 and Figure 7As shown, the output end of the guide 214 controls the output block 2141 to move to the right, which drives the first connecting rod 213 to move to the right and drives the connector 212 to rotate to the right. The connector 212 drives the detection element 22 to rotate to the right, and the detection end 221 on the detection element 22 rotates clockwise until it is aligned with the oblique electrical terminal and inserted for detection.

[0036] During testing, the baffle 12 is removed, exposing the test slot 11. The first moving cylinder 23 controls the guide 214 to move downwards so that the test slot 11 is positioned on the rotation trajectory of the testing element 22, and the testing end 221 on the testing element 22 can rotate to face the circuit node in the test slot 11. Then, the guide 214 controls the first connecting rod 213 to move closer to the test slot 11. The first connecting rod 213 drives the connecting member 212 to move, and the connecting member 212 drives the testing element 22 to rotate so that the testing end 221 and the circuit node in the test slot 11 are facing and in contact. This allows the testing element 22 to test the angled electrical connection, thereby reducing poor contact caused by the testing end 221 not aligning with the angled electrical connection and improving testing accuracy.

Claims

1. A frequency converter testing device, characterized in that, include: Test bench (10), the test bench (10) is used to place the frequency converter, the test bench (10) is provided with a test slot (11) adapted to the oblique power connection terminal, the test slot (11) and the oblique power connection terminal are electrically connected; The detection component (20) includes a moving module and a power mechanism (21) disposed at the output end of the moving module. The output end of the power mechanism (21) is provided with a detection element (22). The moving module is used to drive the power mechanism (21) to move to correspond with the test slot (11). The power mechanism (21) is used to drive the detection element (22) to rotate and insert into the test slot (11).

2. The inverter testing device according to claim 1, characterized in that: The power mechanism (21) includes a support plate (211), a connector (212) rotatably mounted on the support plate (211), a first connecting rod (213) rotatably connected to the connector (212), and a guide (214) rotatably connected to the first connecting rod (213). The support plate (211) is connected to the output end of the moving module, and the guide (214) is used to control the first connecting rod (213) to perform linear motion.

3. The inverter testing device according to claim 2, characterized in that: The rotational connection point of the first connecting rod (213) and the connector (212) does not coincide with the rotational center of the connector (212), and the first connecting rod (213) is eccentrically set relative to the connector (212).

4. The inverter testing device according to claim 2, characterized in that: The guide (214) is a telescopic cylinder or a lead screw transmission mechanism.

5. The inverter testing device according to claim 2, characterized in that: The detection element (22) is arc-shaped.

6. The inverter testing device according to claim 3, characterized in that: The end of the detection element (22) facing the guide (214) is the detection end (221), and the detection end (221) is set towards the test groove (11).

7. The inverter testing device according to claim 5, characterized in that: The connector (212) is provided with a mounting groove (2121) that is compatible with the detection component (22).

8. The inverter testing device according to claim 2, characterized in that: The mobile module includes a first mobile cylinder (23) and a frame (24). The guide (214) is disposed on the frame (24). The frame (24) is connected to the output end of the first mobile cylinder (23). The frame (24) is fixedly connected to the support plate (211).

9. The inverter testing device according to claim 8, characterized in that: The orientation of the first movable cylinder (23) and the orientation of the guide (214) intersect each other.

10. The inverter testing device according to claim 1, characterized in that: The test bench (10) is also provided with a baffle (12), which is used to cover the test slot (11).

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