Frequency converter short circuit testing device

Abstract

The utility model discloses a frequency converter short circuit testing device, comprising a protection assembly, the protection assembly comprises a workbench, the top outer wall of the workbench is provided with a pedestal, the top outer wall of the workbench is provided with a mounting rack, the top outer wall of the mounting rack is provided with an electric lifting rod, and the telescopic end of the bottom of the electric lifting rod slidably penetrates through the mounting rack. A supporting frame is arranged on the outer wall of the top of the workbench, a fixing frame is slidably installed on one side of the supporting frame, an abutting frame is installed at the end of the fixing frame, a spring is installed on one side of the abutting frame, the other end of the spring is fixed to the supporting frame, and a protruding clamping pin is arranged on one side of the abutting frame. Clamping grooves matched with the clamping grooves of the abutting frame are formed in the outer walls of the two sides of the protective cover respectively, a positioning hole is formed in one side of the fixing frame, a fixing pin is detachably installed through the positioning hole, a fixing assembly used for fixing the frequency converter is arranged on one side of the base, and a temperature adjusting assembly used for simulating the temperature in actual use is arranged on one side of the protective cover.

Description

TECHNICAL FIELD

[0001] The utility model relates to frequency converter test technical field especially relates to a frequency converter short circuit testing device. BACKGROUND

[0002] The frequency converter is a kind of power control equipment by frequency conversion technology and microelectronic technology to control alternating current motor.In the frequency converter application process, due to the load failure or human wiring error, the output side short circuit of frequency converter often appears, is easy to damage the internal electronic components of frequency converter, to ensure the quality of frequency converter, it needs to carry out short circuit test, to test whether it can meet actual use, can be further improved by test result to frequency converter, improve the performance of frequency converter.

[0003] Through the retrieval, the patent of Chinese patent application No.201620755740.0 discloses a kind of frequency converter short circuit testing device, including frequency converter, electronic relay main circuit end and electronic relay auxiliary circuit end, the frequency converter both sides are equipped with connector, the top of the connector is equipped with main circuit, the end body of the main circuit is equipped with electronic relay main circuit end, the electronic relay main circuit end is connected with the electronic relay auxiliary circuit end by wire, the two sides of the electronic relay auxiliary circuit end are equipped with auxiliary circuit, the electronic relay auxiliary circuit end is connected with instrument panel by auxiliary circuit.The frequency converter short circuit testing device in the above patent has the following deficiencies: the device does not set effective protection device in the process of using, frequency converter has certain damage risk when short circuit test, when burning etc. situation appears, the safety of surrounding test personnel will have certain influence, need to be optimized to increase security. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in prior art, and provides a kind of frequency converter short circuit testing device.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] The utility model provides a kind of frequency converter short-circuit testing device, including guard assembly, the guard assembly includes workbench, the outer wall of workbench top is provided with base, the outer wall of workbench top is provided with mounting bracket, the outer wall of mounting bracket top is provided with electric lifting rod, the telescopic end of electric lifting rod bottom can slide through mounting bracket setting, electric lifting rod bottom end is equipped with protective cover, protective cover is adapted to base, the outer wall of workbench top is provided with support frame, support frame one side is slidably installed with fixed frame, fixed frame end is equipped with abutting frame, spring is installed in the one side of abutting frame, spring other end is fixed to support frame, the one side of abutting frame is provided with the protruding locking pin, the outer wall of protective cover both sides is respectively provided with the locking slot that is adapted to the abutting frame locking slot, the one side of fixed frame is provided with positioning hole, and fixed pin is detachably installed by positioning hole, the one side of base is provided with the fixed component for fixing frequency converter, the one side of protective cover is provided with the temperature adjusting component for simulating actual use.

[0007] As a further scheme of the utility model: the fixed component includes connecting frame, the connecting frame is provided with two groups, is symmetrically installed on the outer wall of base top, the outer wall of connecting frame one side is provided with electric telescopic rod, and the telescopic end of electric telescopic rod one side can slide through connecting frame setting, and the end of electric telescopic rod is equipped with clamping frame.

[0008] As a further scheme of the utility model: the temperature adjusting component includes speed-regulating motor, and the speed-regulating motor is fixed to the inner wall of protective cover one side, the one side of speed-regulating motor is connected with transmission shaft, the one end of transmission shaft is equipped with fan blade, and the top inner wall of protective cover is equipped with a plurality of groups of heating pipes arranged in sequence.

[0009] As a further scheme of the utility model: the one end of fixed frame is equipped with handle, and the outer wall of handle is provided with the protective sleeve of rubber material.

[0010] As a further scheme of the utility model: the outer wall of workbench bottom is fixedly provided with support leg by bolt, and the bottom of support leg is equipped with the foot pad of rubber material.

[0011] As a further scheme of the utility model: the protective cover is provided with two groups of threading holes, and the wire ring sleeve is installed through the threading hole.

[0012] As a further scheme of the utility model: the one side of protective cover is provided with transparent observation window, and the observation window is attached with explosion-proof film.

[0013] As a further scheme of the utility model: the top inner wall of protective cover is fixedly provided with camera by bolt, and the camera is installed at the central position of protective cover, and the outer wall of control panel is attached with protection film.

[0014] The utility model has the advantages that:

[0015] 1. The protective cover is controlled to fall and contact the base by the electric lifting rod, the frequency converter is wrapped, the danger is avoided when the frequency converter is damaged during the test, the protective cover is limited and fixed in the slot of the protective cover by the elastic force of the spring after the protective cover falls, the locking pin of the pressing frame is inserted into the slot, the fixed pin of the fixed frame is inserted into the pressing frame, so that the accidental opening of the protective cover during the test is avoided, the safety during the test is effectively improved, and the safety of the surrounding test personnel is ensured.

[0016] 2. The clamping frame is controlled to move by the electric telescopic rod, the frequency converter is clamped and fixed by controlling the movement of the two groups of clamping frames, and the safety is further improved by limiting the position.

[0017] 3. The test process of the frequency converter is photographed by the camera, which is convenient for recording and subsequent playback. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structure schematic view of a main view angle of a frequency converter short circuit test device is provided for the utility model.

[0019] Figure 2 A structure schematic view of a circulating part of a frequency converter short circuit test device is provided for the utility model.

[0020] Figure 3 A structure schematic view of a fixed part of a frequency converter short circuit test device is provided for the utility model.

[0021] Figure 4 A structure schematic view of a temperature adjusting part of a frequency converter short circuit test device is provided for the utility model.

[0022] In the figure: 1-workbench, 2-supporting leg, 3-foot pad, 4-base, 5-observation window, 6-spring, 7-supporting frame, 8-grip, 9-fixed frame, 10-fixed pin, 11-pressing frame, 12-mounting frame, 13-electric lifting rod, 14-protective cover, 15-control panel, 16-electric telescopic rod, 17-connecting frame, 18-clamping frame, 19-transmission shaft, 20-fan blade, 21-speed regulating motor, 22-heating pipe, 23-wire ring sleeve, 24-camera. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model will be further described in detail in combination with specific implementation manners.

[0024] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only to explain the present application, and cannot be understood as a limitation of the present application.

[0025] Embodiment 1

[0026] A frequency converter short circuit testing device, as shown in Figures 1-4 the drawings, comprising a protection assembly, the protection assembly comprises a workbench 1, the outer wall of the top of the workbench 1 is provided with a base 4 through bolt fixing, the outer wall of the top of the workbench 1 is provided with a mounting frame 12 through bolt fixing, the outer wall of the top of the mounting frame 12 is provided with an electric lifting rod 13 through bolt fixing, the telescopic end of the bottom of the electric lifting rod 13 can be slidably penetrated through the mounting frame 12, the bottom end of the electric lifting rod 13 is provided with a protective cover 14, the protective cover 14 is matched with the base 4, the outer wall of the top of the workbench 1 is provided with a supporting frame 7 through bolt fixing, one side of the supporting frame 7 is slidably provided with a fixing frame 9, the end of the fixing frame 9 is provided with a pressing frame 11, one side of the pressing frame 11 is provided with a spring 6, the other end of the spring 6 is fixed to the supporting frame 7, one side of the pressing frame 11 is provided with a protruding clamping pin, the outer wall of both sides of the protective cover 14 is respectively provided with a clamping groove matched with the clamping groove of the pressing frame 11, one side of the fixing frame 9 is provided with a positioning hole, a fixing pin 10 can be detachably installed through the positioning hole, one side of the base 4 is provided with a fixing assembly for fixing the frequency converter, one side of the protective cover 14 is provided with a temperature adjusting assembly for simulating the temperature in actual use;

[0027] In use, the frequency converter can be placed on the base 4 to connect the circuit, and the other end of the circuit is connected to the short circuit test device to test the frequency converter. After the circuit connection is completed, the protective cover 14 can be controlled to fall by the electric lifting rod 13, and the protective cover 14 is contacted with the base 4 to cover and protect it. The frequency converter can be wrapped inside to avoid danger when the frequency converter is damaged during testing. After the protective cover 14 falls, the spring 6 can drive the locking pin of the pressing frame 11 to be inserted into the locking slot of the protective cover 14. After being inserted, the fixing pin 10 is inserted into the positioning hole of the fixing frame 9, and the supporting frame 7 blocks the inserted fixing pin 10, thereby avoiding the retraction of the spring 6 affecting the fixation of the protective cover 14, effectively increasing the reliability of the protection. After the test is completed, the fixing pin 10 can be pulled out and the fixing frame 9 is pulled, the spring 6 is controlled to shrink by pulling the fixing frame 9 to control the movement of the pressing frame 11, the locking pin of the pressing frame 11 is separated from the locking slot, thereby releasing the limiting fixation of the protective cover 14, so that it can move normally. When the fixing frame 9 is pulled to release the limiting of the pressing frame 11, the positioning hole of the fixing frame 9 is moved from one side of the supporting frame 7 to the other side, and the fixing pin 10 is inserted after the movement is completed. It can be fixed to avoid the reset of the spring 6, without the need for long-time hand holding, thereby other operations can be performed;

[0028] The fixing assembly comprises a connecting frame 17, the connecting frame 17 is provided with two groups, which are symmetrically installed on the top outer wall of the base 4. The outer wall of one side of the connecting frame 17 is provided with an electric telescopic rod 16 fixed by a bolt, and the telescopic end of one side of the electric telescopic rod 16 can slidably penetrate through the connecting frame 17. A clamping frame 18 is installed at the end of the electric telescopic rod 16;

[0029] In use, the frequency converter can be placed between the two groups of clamping frames 18 for wiring. The clamping frame 18 can be moved by the electric telescopic rod 16. The two groups of clamping frames 18 are controlled to move and contact the frequency converter to clamp and fix it. By limiting its position, the safety can be further improved to avoid the frequency converter body splashing when it is on fire and explodes;

[0030] The temperature regulating assembly comprises a speed regulating motor 21, which is fixed on one side of the inner wall of the protective cover 14 by a bolt. The speed regulating motor 21 is connected with a transmission shaft 19 on one side, and a fan blade 20 is installed at one end of the transmission shaft 19. A plurality of groups of heating pipes 22 are installed on the top inner wall of the protective cover 14 in sequence;

[0031] In use, the protective cover 14 can be heated by heating the pipe 22, the transmission shaft 19 and the fan blade 20 can be controlled to rotate by the speed regulating motor 21, the heat in the protective cover 14 can be circulated by the rotation of the fan blade 20, so that the heating is more uniform, and the actual use environment temperature can be created by appropriate heating, so that the frequency converter can be tested more realistically, and the obtained data is more realistic.

[0032] In order to facilitate the control of the movement of the fixing frame 9, as shown in Figure 1 , 3 , one end of the fixing frame 9 is provided with a handle 8, and the outer wall of the handle 8 is provided with a protective sleeve made of rubber.

[0033] In use, the handle 8 can be held to control the movement of the fixing frame 9, and the handle 8 can be held to make the movement of the fixing frame 9 more convenient, and the protective sleeve made of rubber can prevent the hands from slipping during operation.

[0034] In order to support the device, as shown in Figure 2 , the bottom outer wall of the workbench 1 is provided with a supporting leg 2 fixed by bolts, and the bottom of the supporting leg 2 is provided with a rubber material foot pad 3.

[0035] In use, the device can be supported by the supporting leg 2 and the foot pad 3, so as to keep the device stable, and the friction force between the rubber material foot pad 3 and the ground can be increased, so as to increase the anti-skid property and prevent the device from sliding displacement.

[0036] In order to facilitate threading, as shown in Figure 3 , 4 , the protective cover 14 is provided with two groups of threading holes, and the threading holes are provided with a wire ring sleeve 23.

[0037] In use, the wire can be threaded out after the wiring of the frequency converter is completed through the threading holes, so as to avoid the damage of the wire caused by the falling of the protective cover 14 and affect the test, and the gap between the wire and the threading hole can be reduced by the rubber material wire ring sleeve 23, so as to prevent foreign matters from entering the protective cover 14 through the threading hole during the test.

[0038] In order to observe during the test process, as shown in Figure 1 , a transparent observation window 5 is arranged on one side of the protective cover 14, and the observation window 5 is provided with an explosion-proof film.

[0039] In use, the inside of the protective cover 14 can be observed through the transparent observation window 5 when the protective cover 14 is wrapped, so as to facilitate the observation of the connection of the wire and the condition of the frequency converter during the test process, and the explosion-proof film can prevent the observation window 5 from being broken and causing splashing of debris when the observation window 5 is broken during the test.

[0040] To record the test screen of the frequency converter, such as Figure 3 , 4 As shown, a camera 24 is fixedly installed on the inner top wall of the protective cover 14 by bolts, and the camera 24 is installed in the center of the protective cover 14.

[0041] When in use, the camera 24 installed in the center of the protective cover 14 is adapted to the fixed position of the frequency converter. The test process of the frequency converter can be filmed through the camera 24, which is convenient for recording and subsequent playback to view the test process.

[0042] Example 2

[0043] For ease of control, refer to Figure 1 A frequency converter short circuit test device, the following improvements are made in this embodiment compared with embodiment 1: the control panel 15 is fixedly installed on the top outer wall of the workbench 1 by bolts, and the outer wall of the control panel 15 is covered with a protective film;

[0044] In use, the control panel 15 is connected to various components of the device via wiring. The device can be controlled conveniently and quickly through the control panel 15. At the same time, the control panel 15 is connected to the testing equipment and can display real-time data such as voltage and current during testing, which is convenient for observation and recording. The control panel 15 can also display the image captured by the camera 24, which makes it even more convenient for observation and recording.

[0045] The above description is only a preferred embodiment of the present utility model. For parts that do not require creative effort in circuit control, signal control and transmission, please refer to the prior art. However, the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A short circuit testing device for a frequency converter, comprising a guard assembly, characterized in that The protection assembly includes a workbench (1), the outer wall of the top of the workbench (1) is provided with a base (4), the outer wall of the top of the workbench (1) is provided with a mounting frame (12), the outer wall of the top of the mounting frame (12) is provided with an electric lifting rod (13), the telescopic end of the bottom of the electric lifting rod (13) can slide through the mounting frame (12) and is provided, the bottom end of the electric lifting rod (13) is provided with a protective cover (14), the protective cover (14) is matched with the base (4), the outer wall of the top of the workbench (1) is provided with a support frame (7), one side of the support frame (7) is slidably provided with a fixing frame (9), the end of the fixing frame (9) is provided with a pressing frame (11), one side of the pressing frame (11) is provided with a spring (6), the other end of the spring (6) is fixed to the support frame (7), one side of the pressing frame (11) is provided with a protruding locking pin, the outer wall of both sides of the protective cover (14) is provided with a locking slot matched with the locking slot of the pressing frame (11), one side of the fixing frame (9) is provided with a positioning hole, a fixing pin (10) can be detachably installed through the positioning hole, one side of the base (4) is provided with a fixing assembly for fixing a frequency converter, one side of the protective cover (14) is provided with a temperature adjusting assembly for simulating the temperature in actual use.

2. The short-circuit test device for a frequency converter according to claim 1, characterized in that The fixing assembly includes a connecting frame (17), the connecting frame (17) is provided with two groups, which are symmetrically installed on the top outer wall of the base (4), the outer wall of one side of the connecting frame (17) is provided with an electric telescopic rod (16), the telescopic end of one side of the electric telescopic rod (16) can slide through the connecting frame (17) and is provided, the end of the electric telescopic rod (16) is provided with a clamping frame (18).

3. The short circuit test device for a frequency converter according to claim 1, characterized in that The temperature adjusting assembly includes a speed regulating motor (21), the speed regulating motor (21) is fixed to the inner wall of one side of the protective cover (14), one side of the speed regulating motor (21) is connected with a transmission shaft (19), one end of the transmission shaft (19) is provided with a fan blade (20), the top inner wall of the protective cover (14) is provided with a plurality of groups of heating pipes (22) arranged in sequence.

4. The short circuit test device for a frequency converter according to claim 1, characterized in that One end of the fixing frame (9) is provided with a handle (8), the outer wall of the handle (8) is provided with a protective sleeve made of rubber material.

5. The short circuit test device for a frequency converter according to claim 1, characterized in that The outer wall of the bottom of the workbench (1) is provided with a support leg (2) fixed by bolts, the bottom of the support leg (2) is provided with a rubber material foot pad (3).

6. The short circuit test device for a frequency converter according to claim 1, characterized in that The protective cover (14) is provided with two groups of threading holes, a wire ring sleeve (23) is installed through the threading holes.

7. The short circuit test device for a frequency converter according to claim 1, characterized in that One side of the protective cover (14) is provided with a transparent observation window (5), the observation window (5) is attached with an anti-explosion film.

8. The short circuit test device for a frequency converter according to claim 1, characterized in that The top inner wall of the protective cover (14) is provided with a camera (24) fixed by bolts, the camera (24) is installed at the central position of the protective cover (14), the outer wall of the top of the workbench (1) is provided with a control panel (15) fixed by bolts, the outer wall of the control panel (15) is attached with a protective film.

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