A frequency converter testing device

Abstract

This utility model discloses a frequency converter testing device, relating to the technical field of testing equipment. It includes: a positioning wiring module, an electrical module, and a load module; the positioning wiring module includes: a positioning frame, a pin plate, and a pressing mechanism; the positioning frame includes: a vertical plate and a horizontal base plate, connected at a 90-degree angle; the horizontal base plate has a mounting position for mounting the frequency converter; the pin plate has multiple pins along its length, the tops of which are connected to the electrical module and then sequentially connected to the load module; the projection of the pins in the vertical direction is located within the mounting position; the pressing mechanism is mounted on the vertical plate, with its two ends being a power end and an execution end, respectively, and the execution end connected to the pin plate; in this technical solution, the positioning wiring module enables rapid connection of the frequency converter's terminals, improving efficiency and avoiding frequent contact with the terminals by workers, thus ensuring worker safety.

Description

Technical Field

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

[0002] A frequency converter is a type of power electronic device whose core function is to convert fixed-frequency alternating current (such as the industrial frequency of 50Hz or 60Hz) into adjustable-frequency alternating current, thereby regulating the speed of an AC motor and optimizing motor performance and saving energy.

[0003] After the frequency converter is manufactured, it needs to be tested. Currently, the testing is generally done manually. When testing each frequency converter, the input and output lines must be connected to the corresponding terminals of the frequency converter. Each test requires frequent disconnection and reconnection of the connection lines, which is inefficient and inconvenient. In addition, workers need to frequently touch the terminals during testing, which does not guarantee safety. Utility Model Content

[0004] In view of this, the present invention provides a frequency converter testing device that can quickly complete the connection of the frequency converter's wiring terminals.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A frequency converter testing device includes: a positioning wiring module, an electrical module, and a load module;

[0007] The positioning wiring module includes: a positioning frame, a pin plate, and a pressing mechanism;

[0008] The positioning frame includes a vertical plate and a horizontal base plate, which are connected at a 90-degree angle. The horizontal base plate has a mounting position for mounting a frequency converter. A plurality of pins are provided along the length of the pin plate; the tip of a portion of the pins is connected to the electrical module, and the tip of another portion of the pins is connected to the load module. The vertical projection of the pins is located within the mounting position.

[0009] The pressing mechanism is disposed on the vertical plate, and the two ends of the pressing mechanism are a power end and an execution end, respectively, and the execution end is connected to the ejector plate; wherein, the pressing mechanism has a first state and a second state;

[0010] When the press mechanism is in the first state, the pins on the pin plate move vertically downwards along with the actuator under the drive of the power end, so that the bottom end of the pins connects to the terminals on the frequency converter; when the press mechanism is in the second state, the pins on the pin plate move vertically upwards along with the actuator under the drive of the power end, so that the bottom end of the pins disconnects from the terminals on the frequency converter.

[0011] Preferably, the actuator is connected to the ejector plate via a support plate;

[0012] The actuator is fixed to the upper surface of the support plate, and the ejector plate is connected to the support plate.

[0013] Preferably, the connection between the ejector plate and the support plate is a screw connection.

[0014] Preferably, the inverter testing device further includes: a guiding mechanism; the guiding mechanism includes: a guide column and a fixing plate; the first end of the guide column, which is arranged in a vertical direction, is fixed to the vertical plate by the fixing plate;

[0015] The support plate has a guide hole, and the second end of the guide post extends vertically downward through the guide hole. The connection between the guide hole and the guide post is a sliding connection.

[0016] Preferably, the vertical plate is provided with a limiting plate, the limiting plate is a U-shaped structure, and the U-shaped opening of the limiting plate is used to form a snap-fit ​​with the side wall of the frequency converter to achieve positioning and limiting.

[0017] Preferably, the limiting plate includes: a first limiting side plate, a limiting bottom plate, and a second limiting side plate connected in sequence;

[0018] The upper surface of the limiting base plate is fixed to the second end of the guide post, the first limiting side plate is engaged with one side wall of the frequency converter, and the second limiting side plate is engaged with the other side wall of the frequency converter.

[0019] Preferably, two limiting blocks are provided on the horizontal base plate, the two limiting blocks are arranged symmetrically, and the interval between the two limiting blocks forms a channel structure for the frequency converter to pass through.

[0020] Preferably, the load module includes: a load chassis, a reactor, and a cooling fan;

[0021] The reactor is connected to the top of the corresponding pin, the reactor is installed in the load chassis, and the cooling fan dissipates heat from the reactor.

[0022] Preferably, the inverter testing device further includes: a frame.

[0023] The number of positioning wiring modules is multiple, and the frame is provided with multiple module mounting parts. The number of module mounting parts and the number of positioning wiring modules are in one-to-one correspondence, and the positioning wiring modules are mounted on the module mounting parts.

[0024] Preferably, the frequency converter testing device further includes: an electrical enclosure;

[0025] The electrical module is housed within the electrical enclosure, which is mounted on the side wall of the frame.

[0026] As can be seen from the above technical solution, the inverter testing device provided by this utility model can quickly complete the connection of the inverter terminals by setting the positioning wiring module, which improves efficiency, avoids workers from frequently touching the wiring terminals, and ensures the safety of workers. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram showing the coordination between the positioning wiring module and other modules in this inverter testing device.

[0029] Figure 2 This is a first-view structural schematic diagram of the load module in the inverter testing device.

[0030] Figure 3 This is a first-view structural diagram of the load module and the frequency converter in this frequency converter testing device;

[0031] Figure 4 This is a structural schematic diagram of the load module and the frequency converter in this frequency converter testing device from a second-view perspective.

[0032] Figure 5 This is a structural schematic diagram of the load module in the inverter testing device from a second-view perspective.

[0033] Figure 6 This is a schematic diagram of the type of ejector pin in this inverter testing device.

[0034] The meanings of the various reference numerals in the figure are as follows:

[0035] 10 is the positioning wiring module, 11 is the positioning frame, 111 is the vertical plate, 112 is the horizontal base plate, 113 is the limiting plate, 114 is the limiting block, 12 is the ejector plate, 121 is the ejector pin, 13 is the presser mechanism, 131 is the power end, 132 is the execution end, 14 is the support plate, and 141 is the guide hole.

[0036] 20 is an electrical module;

[0037] 30 is the load module, 31 is the load chassis, 32 is the reactor, and 33 is the cooling fan;

[0038] 40 is the rack, and 41 is the module mounting section;

[0039] 50 is a frequency converter;

[0040] 60 is the guiding mechanism, 61 is the guide column, and 62 is the fixing plate;

[0041] 70 is the electrical enclosure. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] The inverter testing device provided in this embodiment of the utility model, such as Figure 1 and Figure 2 As shown, it includes: a positioning wiring module 10, an electrical module 20, and a load module 30;

[0044] like Figure 3 As shown, the positioning frame 11, the ejector plate 12, and the presser mechanism 13;

[0045] like Figure 3 As shown, the positioning frame 11 includes a vertical plate 111 and a horizontal base plate 112, which are connected at a 90-degree angle. The horizontal base plate 112 has a mounting position for mounting the frequency converter 50. The pin plate 12 has multiple pins 121 along its length. The top of a portion of the pins 121 is connected to the electrical module 20, and the top of another portion of the pins 121 is connected to the load module 30. The projection of the pins 121 in the vertical direction is located within the mounting position.

[0046] The pressing mechanism 13 is mounted on the vertical plate 111, and the two ends of the pressing mechanism 13 are the power end 131 and the execution end 132, respectively. The execution end 132 is connected to the ejector plate 12. The pressing mechanism 13 has a first state and a second state.

[0047] When the press mechanism 13 is in the first state, the ejector pin 121 on the ejector plate 12 moves vertically downward along with the actuator 132 under the drive of the power end 131, so that the bottom end of the ejector pin 121 is connected to the terminal block on the inverter 50; when the press mechanism 13 is in the second state, the ejector pin 121 on the ejector plate 12 moves vertically upward along with the actuator 132 under the drive of the power end 131, so that the bottom end of the ejector pin 121 is disconnected from the terminal block on the inverter 50.

[0048] In the above technical solution, during use, the inverter 50 is installed in the mounting position, with the terminals on the inverter 50 and the ejector pin 121 aligned vertically. When the inverter 50 needs to be tested, a downward force is applied to the power end 131 of the pressure mechanism 13, causing the actuator end 132 to move vertically downward under the action of the power end 131. This allows the bottom end of the ejector pin 121 to connect with the terminals on the inverter 50, thus completing the connection of the circuit under test between the inverter, electrical module 20, and load module 30, thereby testing the inverter. After testing the inverter 50 is completed, when the pressure mechanism 13 is in the second state, an upward force is applied to the power end 131 of the pressure mechanism 13, causing the actuator end 132 to move vertically upward under the action of the power end 131. This allows the bottom end of the ejector pin 121 to disengage from the terminals on the inverter 50, allowing the inverter 50 to be removed after testing, saving time and effort. In this technical solution, the connection of the inverter 50 terminals can be completed quickly by setting the positioning wiring module 10, which improves efficiency, avoids workers from frequently touching the wiring terminals, and ensures the safety of workers.

[0049] In a technical solution, such as Figure 6 As shown, the ejector pin 121 is connected from right to left to L1, L2, L3, +, BR, U, V, and W. + and BR are for braking; U, V, and W are output terminals directly connected to the load module 30, or these output terminals are connected to the load module 30 via the electrical module 20. L1, L2, and L3 are input terminals directly connected to the electrical module 20. + and BR, also for braking, are also directly connected to the electrical module 20.

[0050] In one of the alternative technical solutions, such as Figure 3 As shown, the actuator 132 is connected to the ejector plate 12 via the support plate 14;

[0051] The actuator 132 is fixed to the upper surface of the support plate 14, and the ejector plate 12 is connected to the support plate 14.

[0052] In the above technical solution, the support plate 14 is used to drive the execution end 132 to move the support plate 14 vertically, thereby driving the movement of the ejector plate 12. Preferably, the connection between the ejector plate 12 and the support plate 14 is a detachable connection, so that the ejector plate 12 can be replaced as needed.

[0053] Optimize the above technical solutions, such as Figure 3 As shown, the connection between the ejector plate 12 and the support plate 14 is a screw connection. Specifically, the support plate 14 has a first screw hole, and the ejector plate 12 has a second screw hole. The screw passes through the first screw hole and the second screw hole in sequence to fix the ejector plate 12 and the support plate 14.

[0054] In one of the alternative technical solutions, such as Figure 3 and Figure 4 As shown, the inverter testing device also includes: a guide mechanism 60; the guide mechanism 60 includes: a guide column 61 and a fixing plate 62; the first end of the guide column 61, which is arranged in the vertical direction, is fixed to the vertical plate 111 by the fixing plate 62;

[0055] The support plate 14 has a guide hole 141. The second end of the guide post 61 passes through the guide hole 141 and extends vertically downward. The connection between the guide hole 141 and the guide post 61 is a sliding connection.

[0056] In the above technical solution, the guide post 61 can slide up and down along the guide hole 141. When in use, when the actuator 132 drives the support plate 14 to move vertically, the guide post 61 plays a guiding role.

[0057] In one optional technical solution, in order to achieve a snap-fit ​​engagement with the frequency converter 50 and realize the positioning and limiting function, such as Figure 3 As shown, a limiting plate 113 is provided on the vertical plate 111. The limiting plate 113 has a U-shaped structure, and the U-shaped opening of the limiting plate 113 is used to form a snap-fit ​​with the side wall of the frequency converter 50 to achieve positioning and limiting.

[0058] The above technical solution is optimized, and the limiting plate 113 includes: a first limiting side plate, a limiting bottom plate, and a second limiting side plate connected in sequence;

[0059] The upper surface of the limiting base plate is fixed to the second end of the guide post 61, the first limiting side plate is engaged with one side wall of the frequency converter 50, and the second limiting side plate is engaged with the other side wall of the frequency converter 50.

[0060] In the above technical solution, this setting makes the snap-fit ​​structure between the frequency converter 50 and the limit plate 113 more robust and stable, and makes the wiring terminals on the frequency converter 50 and the pin 121 on the same vertical line.

[0061] In one of the alternative technical solutions, such as Figure 3 As shown, to ensure accurate engagement between the frequency converter 50 and the limiting plate 113, two limiting blocks 114 are provided on the horizontal base plate 112. The two limiting blocks 114 are symmetrically arranged, and the gap between them forms a channel structure for the frequency converter 50 to pass through, allowing the frequency converter 50 to move along... Figure 3 Insert the connector in the direction indicated by the arrow. Once inserted, the terminals on the inverter 50 and the pin 121 should be aligned on the same vertical line.

[0062] In one of the alternative technical solutions, such as Figure 5 As shown, the load module 30 includes: a load chassis 31, a reactor 32, and a cooling fan 33;

[0063] The reactor 32 is connected to the top of the pin 121. The reactor 32 is installed in the load chassis 31. The cooling fan 33 dissipates heat from the reactor 32.

[0064] In the above technical solution, the cooling fan 33 can serve as the reactor 32, thereby extending the service life of the reactor 32; in addition, the load chassis 31 can be provided with multiple mounting positions for mounting the load chassis 31, and multiple mounting positions can accommodate multiple load chassis 31.

[0065] In one of the alternative technical solutions, such as Figure 1 As shown, the inverter testing device also includes: rack 40:

[0066] There are multiple positioning wiring modules 10. The frame 40 is provided with multiple module mounting parts 41. The number of module mounting parts 41 and positioning wiring modules 10 are one-to-one. The positioning wiring modules 10 are mounted on the module mounting parts 41.

[0067] In this technical solution, the inverter testing device also includes: rack 40:

[0068] There are multiple positioning wiring modules 10. The frame 40 is provided with multiple module mounting parts 41. The number of module mounting parts 41 and positioning wiring modules 10 are one-to-one. The positioning wiring modules 10 are mounted on the module mounting parts 41.

[0069] In the above technical solution, multiple positioning wiring modules 10 can be installed through multiple module installation parts 41, thereby enabling multiple frequency converters 50 to be tested simultaneously.

[0070] In an optional technical solution, in order to ensure a more compact structure for the inverter testing device, the inverter testing device also includes: an electrical enclosure 70;

[0071] An electrical module 20 is installed inside the electrical enclosure 70, which is mounted on the side wall of the frame 40.

[0072] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features.

[0073] The following is a further description of this solution with reference to specific embodiments:

[0074] In one specific embodiment, during testing, the operator places the inverter 50 on the positioning frame 11 and pushes it in until it contacts the front limiting side plate. At this time, the left and right sides of the inverter 50, together with the limiting side plate, limit and confirm the position of the inverter. Then, the operator presses down the pressing mechanism 13. Under the action of the guide mechanism 60, the ejector pins 121 installed on the ejector plate 12 will accurately contact and conduct electricity with the input and output terminals of the inverter 50. This operation is then repeated to place inverters on the remaining positioning frames 11. After the inverter 50 is placed, push the entire frame 40 to the position of the load module 30, connect the male plug of the electrical module 20 to the female plug of the load module 30, and then control the inverter 50 to achieve batch power-on and power-off and testing through the control of the electrical module 20. After the inverter 50 of the entire frame is tested, the plug can be unplugged, the frame can be pushed to the next process, and then another frame can be pushed over, the plug can be connected, and then the test can be carried out. Finally, the test data and results are collected in the electrical module for easy tracking and querying later.

[0075] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0076] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A frequency converter testing device, characterized in that, include: Positioning wiring module (10), electrical module (20) and load module (30); The positioning wiring module (10) includes: a positioning frame (11), a pin plate (12), and a pressing mechanism (13). The positioning frame (11) includes a vertical plate (111) and a horizontal base plate (112), the vertical plate (111) and the horizontal base plate (112) being connected at a 90-degree angle; the horizontal base plate (112) is provided with a mounting position for mounting a frequency converter (50); the pin plate (12) is provided with multiple pins (121) along its length direction, the top end of a portion of the pins (121) being connected to the electrical module (20), and the top end of another portion of the pins (121) being connected to the load module (30); the projection of the pins (121) in the vertical direction is located within the mounting position; The pressing mechanism (13) is disposed on the vertical plate (111), and the two ends of the pressing mechanism (13) are a power end (131) and an execution end (132) respectively, and the execution end (132) is connected to the ejector plate (12); wherein, the pressing mechanism (13) has a first state and a second state; When the presser mechanism (13) is in the first state, the pin (121) on the pin plate (12) moves vertically downward along with the execution end (132) under the drive of the power end (131), so that the bottom end of the pin (121) is connected to the terminal on the inverter (50); when the presser mechanism (13) is in the second state, the pin (121) on the pin plate (12) moves vertically upward along with the execution end (132) under the drive of the power end (131), so that the bottom end of the pin (121) is disconnected from the terminal on the inverter (50).

2. The inverter testing device according to claim 1, characterized in that, The execution end (132) is connected to the ejector plate (12) via a support plate (14); The actuator (132) is fixed to the upper surface of the support plate (14), and the ejector plate (12) is connected to the support plate (14).

3. The inverter testing device according to claim 2, characterized in that, The connection between the ejector plate (12) and the support plate (14) is a screw connection.

4. The inverter testing device according to claim 2, characterized in that, The inverter testing device further includes: a guide mechanism (60); the guide mechanism (60) includes: a guide column (61) and a fixing plate (62); the first end of the guide column (61) arranged in the vertical direction is fixed to the vertical plate (111) by the fixing plate (62); The support plate (14) has a guide hole (141), the second end of the guide post (61) extends vertically downward through the guide hole (141), and the connection between the guide hole (141) and the guide post (61) is a sliding connection.

5. The inverter testing device according to claim 4, characterized in that, The vertical plate (111) is provided with a limiting plate (113), which is a U-shaped structure. The U-shaped opening of the limiting plate (113) is used to form a snap-fit ​​with the side wall of the inverter (50) to achieve positioning and limiting.

6. The inverter testing device according to claim 5, characterized in that, The limiting plate (113) includes: a first limiting side plate, a limiting bottom plate, and a second limiting side plate connected in sequence; The upper surface of the limiting base plate is fixed to the second end of the guide post (61), the first limiting side plate is engaged with one side wall of the inverter (50), and the second limiting side plate is engaged with the other side wall of the inverter (50).

7. The inverter testing device according to claim 1, characterized in that, Two limiting blocks (114) are provided on the horizontal base plate (112). The two limiting blocks (114) are arranged symmetrically, and the interval between the two limiting blocks (114) forms a channel structure for the frequency converter (50) to pass through.

8. The inverter testing device according to claim 1, characterized in that, The load module (30) includes: a load chassis (31), a reactor (32), and a cooling fan (33). The reactor (32) is connected to the top of the corresponding pin (121), the reactor (32) is installed in the load chassis (31), and the cooling fan (33) dissipates heat from the reactor (32).

9. The inverter testing device according to claim 1, characterized in that, The inverter testing device also includes: a frame (40): The number of the positioning wiring modules (10) is multiple, and the frame (40) is provided with multiple module mounting parts (41). The number of the module mounting parts (41) and the number of the positioning wiring modules (10) are one-to-one, and the positioning wiring modules (10) are mounted on the module mounting parts (41).

10. The inverter testing device according to claim 9, characterized in that, The frequency converter testing device also includes: an electrical enclosure (70); The electrical module (20) is housed inside the electrical enclosure (70), and the electrical enclosure (70) is mounted on the side wall of the frame (40).

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