Industrial frequency converter maintenance test platform

Abstract

The invention discloses an industrial frequency converter maintenance test platform, and relates to the technical field of frequency converter tests.The rear side of a base frame is connected with a test cabinet, the upper end of the base frame is provided with a top plate, the upper end of the top plate is slidably connected with a sliding table, the inner side of the base frame is provided with a transverse strip, and the front side of the transverse strip is connected with the top of the top plate through a sliding strip; a plurality of motors are installed at the bottom of the inner side of the base frame, the motors are connected with a sliding table through a first adjusting assembly, and through cooperation of the sliding table, the first adjusting assembly and a second adjusting assembly, in the load testing process that the frequency converter switches the motors of different specifications, power plugs are automatically plugged in and pulled out when the motors are switched; through cooperation of a sliding table, a first sliding strip, a fixing assembly and a third adjusting assembly, when low-speed large-torque frequency converters of different specifications are tested, timely fire extinguishing and cooling are carried out on the positions where fire breaks out easily.

Description

Technical Field

[0001] The present invention relates to the technical field of frequency converter testing, and specifically to an industrial frequency converter maintenance and testing platform. Background Technique

[0002] An industrial frequency converter maintenance and testing platform is a system used to evaluate and verify the performance of frequency converters. It usually includes hardware and software components to enable comprehensive performance testing of frequency converters. Among them, for industrial frequency converters with low speed and large torque, which are specially designed for applications that require large torque output at low speeds, such as conveyor belt drive systems, cranes, heavy machinery, etc., when testing such industrial frequency converters, it is necessary to simulate actual working conditions and test multiple performances of the frequency converter, such as load testing, perfect protection functions, accurate speed and torque control, etc.

[0003] However, during the testing process of industrial frequency converters with low speed and large torque by the existing testing platform, it is necessary to adjust the simulated load test with motors of different specifications. During this process, when the existing testing platform switches and connects the frequency converter to motors of different specifications, it is necessary for personnel to switch and connect the power supply. Moreover, when testing with motors of different specifications under simulated loads, personnel need to set and switch the simulated load for each connected motor one by one, which is not convenient to adjust the motor load simulation correspondingly while connecting motors of different specifications. At the same time, for the existing testing platform, during the testing process of industrial frequency converters with low speed and large torque of different specifications, because the voltage and current values required by the motors for cooperative testing are relatively large, when testing some unqualified frequency converters, some components such as resistors and power connection terminals are more likely to short-circuit and catch fire. However, since the existing testing platform does not set a fire extinguishing device for the prone-to-fire positions of the frequency converter, it is not convenient to extinguish the fire in a timely manner according to the prone-to-fire positions of different specifications of frequency converters. Summary of the Invention

[0004] The purpose of the present invention is to provide an industrial frequency converter maintenance and testing platform to solve the problems proposed in the above background technique that the existing testing platform is not convenient to adjust the motor load simulation correspondingly while connecting motors of different specifications, and is not convenient to extinguish the fire in a timely manner according to the prone-to-fire positions of different specifications of frequency converters. The technical solution of the present invention provides a solution significantly different from the existing technology for the technical problem that the existing technology solution is too single.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an industrial inverter maintenance test platform, comprising a base frame, a test cabinet is connected to the rear side of the base frame, a top plate is installed on the upper end of the base frame, a slide is slidably connected to the upper end of the top plate, a horizontal bar is installed on the inner side of the base frame, and the front side of the horizontal bar is connected to the top of the top plate through a slide bar, a plurality of motors are installed on the inner bottom of the base frame, the motor is connected to the slide through a first adjustment component, the first adjustment component is used for plugging and unplugging the motor power cord connection end, the motor output end is rotatably connected to a connection seat through an iron column, the connection seat is installed on the inner bottom of the test cabinet, and the upper end of the connection seat is opened in a hole A friction block is slidably connected, a fixed frame is arranged above the connecting seat, and the fixed frame is installed at the inner bottom of the test cabinet, the friction block is connected to the slide through a second adjusting component, and the second adjusting component is used to adjust the position of the friction block, a first slide bar is slidably arranged in the groove on the right side of the upper end of the slide, the first slide bar is connected to a fixed column through a fixed component, and the fixed component is used to adjust the position of the first slide bar and the fixed column, a nozzle plate is installed on the top of the fixed column, and a fire extinguishing tank is installed in the groove on the left side of the upper end of the slide, the nozzle plate is connected to the fixed component through a third adjusting component, and the third adjusting component is used to adjust the opening size of the nozzle plate.

[0006] Preferably, the groove on the front side of the fixing column is used for installing the power cord of the motor, and the power cord end in the groove of the fixing column is used for connecting to the frequency converter.

[0007] Preferably, the first adjusting component includes a No. 1 hydraulic box, which is installed on the front side of the base frame. The inner side of the No. 1 hydraulic box is slidably connected to a No. 1 plug body through a spring. The upper end of the No. 1 plug body is connected to a No. 1 resistance block through a concave-convex fit. The No. 1 resistance block is installed on the front side of the slide. The inner cavity of the No. 1 hydraulic box is connected to a No. 2 hydraulic box through a hose. The No. 2 hydraulic box is installed on the front side of the lower end of the sliding bar. A No. 2 plug body is slidably arranged in the No. 2 hydraulic box, and a motor power cord connection end is fixed in the convex block on the lower end of the No. 2 plug body.

[0008] Preferably, both sides of the No. 1 resistance block are designed as inclined structures, the inclined structures of the No. 1 resistance block correspond to the shapes of the multiple notches on the upper end of the No. 1 plug body, the number of the multiple notches on the upper end of the No. 1 plug body corresponds to the number and positions of the motors, and the multiple power connection ports on the upper ends of the motors are arranged at the same horizontal position.

[0009] Preferably, the second adjustment component includes a mounting tube, the mounting tube is mounted on the upper end of the connecting seat, the outer side of the mounting tube is nested and mounted in the top opening of the fixing frame, a first sliding body is slidably provided at the lower inner end of the mounting tube, the upper end of the first sliding body is slidably connected to the second sliding body through a spring, the upper end of the second sliding body is threadedly connected to a threaded block, a No. 2 interference block is provided above the threaded block, and the No. 2 interference block is installed on the rear side of the slide.

[0010] Preferably, both sides of the convex block at the upper end of the threaded block are designed as inclined surface structures. The positions of the inclined surface structures of the convex block at the upper end of the threaded block correspond to the movement trajectories of the second abutting blocks, and the heights of the inclined surface structures of the convex block at the upper end of the threaded block correspond to the motor load.

[0011] Preferably, the fixing assembly includes a third hydraulic tank, which is installed in the right-side groove at the upper end of the sliding table. A third plug body is slidably connected inside the third hydraulic tank. The left top end of the third plug body is connected to the first slide bar. The inner cavity of the third hydraulic tank is connected to two fourth hydraulic tanks through a hose. The two fourth hydraulic tanks are installed in the front and rear grooves on the left side at the upper end of the sliding table. A fourth plug body is slidably connected to the right side inside the fourth hydraulic tank through a spring, and a fixing column is installed in the groove at the right end of the fourth plug body.

[0012] Preferably, the volumes of the two fourth hydraulic tanks correspond to that of the third hydraulic tank.

[0013] Preferably, the third adjusting assembly includes a fifth hydraulic tank, which is oppositely installed at the upper right sides of the two fourth plug bodies. A fifth plug body is slidably connected inside the two fifth hydraulic tanks through a spring. An abutting bar is slidably connected to the inner end of the fifth plug body. The abutting bar is installed at the front and rear opening positions at the upper end of the sliding table. The inner cavity of the fifth hydraulic tank is connected to a sixth hydraulic tank through a hose. A sixth plug body is slidably connected inside the sixth hydraulic tank. The tooth port at the right end of the sixth plug body is meshed with a tooth column. The tooth column is installed on the convex block of the fourth plug body through a bearing. The upper end of the tooth column is rotatably arranged inside the nozzle disc. The first adjusting block and the second adjusting block are respectively meshed with the front and rear sides at the upper end of the tooth column. The first adjusting block and the second adjusting block are alternately slidably installed inside the inner cavity of the nozzle disc. The inner cavity of the nozzle disc is connected to the fire extinguishing tank through a hose. A temperature sensor is arranged at the position of the nozzle disc.

[0014] Preferably, the abutting bar is designed as an inclined surface structure. The inclined surface of the abutting bar corresponds to the movement trajectory of the fifth plug body. Both the first adjusting block and the second adjusting block are designed as semi-circular ring structures. The outer diameter of the second adjusting block corresponds to the inner diameter of the first adjusting block.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In the present invention, by providing a sliding table and a first adjusting component, during the motor test of a low-speed high-torque frequency converter, the sliding table drives the first abutting block to be in concave-convex fit with the first plug body, causing the hydraulic oil in the first hydraulic tank and the second hydraulic tank to change, and performing the plugging and unplugging of the motor power cable end. At the same time, in cooperation with the second adjusting component, when switching to motors of different specifications for the load test of the frequency converter, the sliding table drives the second abutting block to abut against the threaded block and the second sliding body, adjusting the resistance of the spring between the second sliding body and the first sliding body, increasing the friction force between the friction block and the connecting seat, simulating the motor load, and increasing the synchronous adjustment ability of the test platform during the low-speed high-torque frequency converter test, thereby improving the test efficiency of the frequency converter.

[0016] In the present invention, by providing a sliding table, a first sliding strip, a fixing component and a third adjusting component, during the test of low-speed high-torque industrial frequency converters of different specifications, the third plug body cooperates with the first sliding strip to fix frequency converters of different specifications, and according to the size of the fixed frequency converter, through the cooperation of the hydraulic oil in the third hydraulic tank and the fourth hydraulic tank, the position of the nozzle plate is adjusted by the fourth hydraulic tank, so that the position of the nozzle plate always remains at the corresponding central position of the frequency converter. At the same time, in cooperation with the fifth plug body abutting against the abutting strip, the hydraulic oil in the fifth hydraulic tank and the sixth hydraulic tank is adjusted, and the tooth column is driven by the sixth plug body to adjust the first adjusting block and the second adjusting block according to the size of the corresponding frequency converter, thereby synchronously adjusting the nozzle size of the nozzle plate, so that during the test of low-speed high-torque frequency converters of different specifications, the easily ignited position can be extinguished and cooled in time, preventing the spreading fire from damaging the test platform. Brief Description of the Drawings

[0017] Figure 1 is a front view structural schematic diagram of the present invention; Figure 2 is a rear view structural schematic diagram of the inner side of the test cabinet and the base frame of the present invention; Figure 3 is a front view structural schematic diagram of the base frame of the present invention; Figure 4 is a sectional view structural schematic diagram of the sliding table and the first adjusting component of the present invention; Figure 5 is Figure 4 an enlarged schematic diagram at A in Figure 6 is a structural schematic diagram of the sliding table, the motor and the second adjusting component of the present invention; Figure 7 is a disassembled sectional view structural schematic diagram of the iron column, the connecting seat and the second adjusting component of the present invention; Figure 8 is a right view structural schematic diagram of the sliding table of the present invention; Figure 9 is a sectional view structural schematic diagram of the fixing component of the present invention; Figure 10Schematic left view structure of the sliding table and the fire extinguishing tank of the present invention; Figure 11 Schematic cross-sectional structure of the fourth plug body, fixed column and third adjustment assembly of the present invention; Figure 12 is Figure 11 Enlarged schematic diagram at position B in Figure 13 Schematic structure of the fourth plug body, fixed column and nozzle plate of the present invention; Figure 14 Schematic inner structure of the nozzle plate of the present invention; Figure 15 Schematic top view structure of the first adjustment block and the second adjustment block of the present invention.

[0018] In the figure: 1, base frame; 2, test cabinet; 3, top plate; 4, sliding table; 5, cross bar; 6, sliding bar; 7, motor; 8, first adjustment assembly; 81, first hydraulic tank; 82, first plug body; 83, first abutting block; 84, second hydraulic tank; 85, second plug body; 9, iron column; 10, connecting seat; 11, friction block; 12, fixed frame; 13, second adjustment assembly; 131, mounting pipe; 132, first sliding body; 133, second sliding body; 134, threaded block; 135, second abutting block; 14, first sliding strip; 15, fixing assembly; 151, third hydraulic tank; 152, third plug body; 153, fourth hydraulic tank; 154, fourth plug body; 17, fixed column; 18, nozzle plate; 19, fire extinguishing tank; 20, third adjustment assembly; 201, fifth hydraulic tank; 202, fifth plug body; 203, abutting strip; 204, sixth hydraulic tank; 205, sixth plug body; 206, tooth column; 207, first adjustment block; 208, second adjustment block. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment 1: Please refer to Figures 1 to 8The present invention provides a technical solution: an industrial inverter maintenance test platform, wherein a test cabinet 2 is connected to the rear side of a base frame 1, a top plate 3 is installed on the upper end of the base frame 1, a slide 4 is slidably connected to the upper end of the top plate 3, a horizontal bar 5 is installed on the inner side of the base frame 1, and the front side of the horizontal bar 5 is connected to the top of the top plate 3 through a sliding bar 6, a plurality of motors 7 are installed on the inner bottom of the base frame 1, and the motor 7 is connected to the slide 4 through a first adjustment component 8, and the first adjustment component 8 includes a No. 1 hydraulic box 81, which is installed on the front side of the base frame 1, and a No. 1 plug body 82 is slidably connected to the inner side of the No. 1 hydraulic box 81 through a spring, and a No. 1 contact block 83 is connected to the upper end of the No. 1 plug body 82 with a concave-convex fit, and the No. 1 contact block 83 is installed on the front side of the slide 4, and the two sides of the No. 1 contact block 83 are designed as inclined structures, The inclined surface structure of the No. 1 resistance block 83 corresponds to the shape of the multiple notches on the upper end of the No. 1 plug body 82. The number of the multiple notches on the upper end of the No. 1 plug body 82 corresponds to the number and position of the motors 7. The power connection ports on the upper ends of the multiple motors 7 are arranged at the same horizontal position. The inner cavity of the No. 1 hydraulic box 81 is connected to the No. 2 hydraulic box 84 through a hose. The No. 2 hydraulic box 84 is installed on the front side of the lower end of the sliding bar 6. The No. 2 plug body 85 is slidably arranged in the No. 2 hydraulic box 84. The power cord connection end of the motor 7 is fixed in the front side convex block at the lower end of the No. 2 plug body 85. The first adjustment component 8 is used for plugging and unplugging the power cord connection end of the motor 7. The output end of the motor 7 is rotatably connected to the connecting seat 10 through the iron column 9. The connecting seat 10 is installed on the inner bottom of the test cabinet 2. The friction block 1 is slidably connected in the opening at the upper end of the connecting seat 10. 1. A fixing frame 12 is arranged above the connecting seat 10, and the fixing frame 12 is installed at the inner bottom of the test cabinet 2. The friction block 11 is connected to the slide 4 through the second adjusting component 13. The second adjusting component 13 includes a mounting tube 131, and the mounting tube 131 is installed at the upper end of the connecting seat 10. The outer side of the mounting tube 131 is nested and installed in the top opening of the fixing frame 12. A first sliding body 132 is slidably arranged at the lower end of the inner side of the mounting tube 131. The upper end of the first sliding body 132 is slidably connected to the second sliding body 133 through a spring. The upper end of the second sliding body 133 is threadedly connected to a thread block 134. A second resistance block 135 is arranged above the thread block 134. The second resistance block 135 is installed at the rear side of the slide 4. Both sides of the convex block at the upper end of the thread block 134 are designed as an inclined structure. The position of the inclined surface structure of the upper end of the protrusion 4 corresponds to the moving track of the second conflict block 135, the height of the inclined surface structure of the upper end of the threaded block 134 corresponds to the load of the motor 7, the second adjustment component 13 is used to adjust the position of the friction block 11, the first slide bar 14 is slidably arranged in the groove on the right side of the upper end of the slide 4, the first slide bar 14 is connected to the fixed column 17 through the fixing component 15, the fixing component 15 is used to adjust the position of the first slide bar 14 and the fixed column 17, the front groove of the fixed column 17 is used for the installation of the power cord of the motor 7, the power cord end in the groove of the fixed column 17 is used for the connection of the inverter, the top of the fixed column 17 is installed with a nozzle plate 18, the left groove on the upper end of the slide 4 is installed with a fire extinguishing tank 19, the nozzle plate 18 is connected to the fixing component 15 through the third adjustment component 20,The third adjustment component 20 is used to adjust the opening size of the nozzle plate 18. When testing the low-speed, high-torque inverter switching motor 7, the operator moves the slide 4 on the top plate 3, synchronously drives the slide bar 6 to slide on the horizontal bar 5, and makes the No. 1 contact block 83 contact the No. 1 plug body 82 to move in the No. 1 hydraulic box 81, and squeezes the oil into the No. 2 hydraulic box 84, so that the No. 2 plug body 85 moves upward, and the power cord end of the motor 7 is unplugged. When the No. 1 contact block 83 moves to another groove position on the No. 1 plug body 82, the spring in the No. 1 hydraulic box 81 drives the No. 1 plug body 82 to return to the original position. The second plug 85 in the second hydraulic box 84 is reset and moved downward synchronously, and the power cord end of the motor 7 is inserted to complete the switching of the motor 7. At the same time, in cooperation with the second adjusting component 13, when switching motors 7 of different specifications to perform the load test of the inverter, the slide 4 drives the second resistance block 135 to resist the threaded block 134 and the second sliding body 133, and adjusts the resistance of the spring between the second sliding body 133 and the first sliding body 132, so that the friction between the friction block 11 and the connecting seat 10 is increased to simulate the load of the motor 7.

[0021] Example 2: Based on Example 1, please refer to Figures 1 to 3 and Figures 8 to 15, a test cabinet 2 is connected to the rear side of the base frame 1. A top plate 3 is installed at the upper end of the base frame 1. A sliding table 4 is slidably connected to the upper end of the top plate 3. A cross bar 5 is installed inside the base frame 1. The front side of the cross bar 5 is connected to the top of the top plate 3 through a sliding bar 6. A plurality of motors 7 are installed at the bottom inside the base frame 1. The motors 7 are connected to the sliding table 4 through a first adjustment component 8. The first adjustment component 8 is used for the plugging and unplugging of the power cord connection ends of the motors 7. The output end of the motor 7 is rotatably connected to a connection seat 10 through an iron column 9. The connection seat 10 is installed at the bottom inside the test cabinet 2. A friction block 11 is slidably connected inside the opening at the upper end of the connection seat 10. A fixing frame 12 is arranged above the connection seat 10. The fixing frame 12 is installed at the bottom inside the test cabinet 2. The friction block 11 is connected to the sliding table 4 through a second adjustment component 13. The second adjustment component 13 is used for the position adjustment of the friction block 11. A first sliding bar 14 is slidably arranged inside the groove on the right side of the upper end of the sliding table 4. The first sliding bar 14 is connected to a fixing column 17 through a fixing component 15. The fixing component 15 includes a third hydraulic tank 151. The third hydraulic tank 151 is installed inside the groove on the right side of the upper end of the sliding table 4. A third plug body 152 is slidably connected inside the third hydraulic tank 151. The left top end of the third plug body 152 is connected to the first sliding bar 14. The inner cavity of the third hydraulic tank 151 is connected to two fourth hydraulic tanks 153 through a hose. The two fourth hydraulic tanks 153 are installed inside the front and rear grooves on the left side of the upper end of the sliding table 4. The volumes inside the two fourth hydraulic tanks 153 correspond to that of the third hydraulic tank 151. A fourth plug body 154 is slidably connected to the right side inside the fourth hydraulic tank 153 through a spring. A fixing column 17 is installed inside the groove at the right end of the fourth plug body 154. The fixing component 15 is used for the position adjustment of the first sliding bar 14 and the fixing column 17. The groove on the front side of the fixing column 17 is used for the installation of the power cord of the motor 7. The power cord end inside the groove of the fixing column 17 is used for the connection of the frequency converter. A nozzle plate 18 is installed at the top of the fixing column 17. A fire extinguishing tank 19 is installed inside the groove on the left side of the upper end of the sliding table 4. The nozzle plate 18 is connected to the fixing component 15 through a third adjustment component 20. The third adjustment component 20 includes a fifth hydraulic tank 201. The fifth hydraulic tanks 201 are oppositely installed at the upper right ends of the two fourth plug bodies 154. A fifth plug body 202 is slidably connected inside the two fifth hydraulic tanks 201 through a spring. A resisting bar 203 is slidably connected to the inner end of the fifth plug body 202. The resisting bar 203 is installed at the position of the front and rear openings at the upper end of the sliding table 4. The inner cavity of the fifth hydraulic tank 201 is connected to a sixth hydraulic tank 204 through a hose. A sixth plug body 205 is slidably connected inside the sixth hydraulic tank 204. The right end of the sixth plug body 205 is meshed and connected to a tooth column 206. The tooth column 206 is installed on the convex block of the fourth plug body 154 through a bearing. The upper end of the tooth column 206 is rotatably arranged inside the nozzle plate 18. The front and rear sides of the upper end of the tooth column 206 are respectively meshed with a first adjustment block 207 and a second adjustment block 208. The first adjustment block 207 and the second adjustment block 208 are alternately slidably installed inside the inner cavity of the nozzle plate 18. The inner cavity of the nozzle plate 18 is connected to the fire extinguishing tank 19 through a hose. A temperature sensor is arranged at the position of the nozzle plate 18. The resisting bar 203 is designed as an inclined plane structure.The inclined surface of the interference bar 203 corresponds to the movement track of the No. 5 plug body 202. Both the first adjusting block 207 and the second adjusting block 208 are designed as semi-circular ring structures. The outer diameter of the second adjusting block 208 corresponds to the inner diameter of the first adjusting block 207. The third adjusting assembly 20 is used to adjust the opening size of the nozzle plate 18; During the test of industrial frequency converters with different specifications of low speed and high torque, the first sliding bar 14 moves to the right on the sliding table 4 and moves to the width corresponding to the frequency converter to be tested. Then the frequency converter is placed on the left side of the first sliding bar 14 for fixed clamping. At the same time, the No. 3 plug body 152 cooperates with the first sliding bar 14 to adjust to the corresponding position according to the size of the fixed frequency converter, squeezing the corresponding oil in the No. 3 hydraulic tank 151 into the No. 4 hydraulic tank 153, and adjusting the position of the nozzle plate 18 through the No. 4 hydraulic tank 153, so that the position of the nozzle plate 18 always remains at the corresponding central position of the frequency converter. At the same time, in cooperation with the corresponding distance of the contact movement between the No. 5 plug body 202 and the interference bar 203, the oil in the No. 5 hydraulic tank 201 and the No. 6 hydraulic tank 204 is adjusted. The No. 6 plug body 205 drives the tooth column 206 to adjust the first adjusting block 207 and the second adjusting block 208 according to the size of the frequency converter, and then synchronously adjusts the nozzle size of the nozzle plate 18.

[0022] Working principle: When using this industrial frequency converter maintenance test platform, first the operator needs to move the first sliding bar 14 to the right on the sliding table 4 and move to the width corresponding to the frequency converter to be tested. Then the frequency converter is placed on the left side of the first sliding bar 14 for fixed clamping. At the same time, the power output line of the test cabinet 2 is connected to the frequency converter, and the power line of the motor 7 is connected to the output end of the frequency converter. During this process, when the first sliding bar 14 adjusts its position according to the width of different models of frequency converters, the No. 3 plug body 152 slides to the right in the No. 3 hydraulic tank 151, squeezes the oil into the No. 4 hydraulic tank 153 through the hose, and synchronously adjusts the positions of the No. 4 plug body 154, the fixed column 17 and the nozzle plate 18. At the same time, when the No. 4 plug body 154 moves, it drives the No. 5 plug body 202 to slide against the inclined surface of the interference bar 203, and along with the inclined surface of the interference bar 203, the No. 5 plug body 202 in the No. 5 hydraulic tank 151 squeezes the oil into the No. 6 hydraulic tank 204 through the hose, and drives the No. 6 plug body 205 to move to the right, so that the front tooth opening of the No. 6 plug body 205 drives the tooth column 206 to rotate. The rotation of the tooth column 206 drives the first adjusting block 207 and the second adjusting block 208 to adjust their positions, so that the nozzle size of the nozzle plate 18 is adjusted correspondingly according to different models of frequency converters. At the same time, the position of the nozzle plate 18 always remains relatively centered with the test transformer. When conducting the low-speed high-torque adjustment test of the frequency converter, if the frequency converter has a short circuit and high temperature and catches fire, the temperature sensor on the nozzle plate 18 detects abnormal temperature and opens the fire extinguishing tank 19 through the controller to release gas; On the basis of the above, when the frequency converter performs a low-speed and high-torque adjustment test of the motor 7, it is necessary to perform a load test on the motor 7 connected with different specifications. During this test, the operator moves the slide 4 on the top plate 3, synchronously drives the slide bar 6 to slide on the horizontal bar 5, and makes the No. 1 resistance block 83 resist the No. 1 plug body 82 to move in the No. 1 hydraulic box 81, and squeezes the oil into the No. 2 hydraulic box 84, so that the No. 2 plug body 85 moves upward, and the power cord end of the motor 7 is pulled out. When the No. 1 resistance block 83 moves to another groove position on the No. 1 plug body 82, the spring in the No. 1 hydraulic box 81 drives the No. 1 plug body 82 to reset, and the No. 2 plug body 85 in the No. 2 hydraulic box 84 is reset and moved downward synchronously, and the power cord end of the motor 7 is inserted to complete the switching of the motor 7. In the above process, when the slide 4 drives the No. 1 resistance block 83 to move to another groove position on the No. 1 plug body 82 and switches the motor 7, it also drives the No. 2 resistance block 135 to move and resist the upper inclined surface of the threaded block 134, so that the threaded block 134 and the second slide body 133 move downward in the mounting tube 131 to squeeze the spring. When the spring at the upper end of the first slide body 132 contracts, the resistance increases, so that the friction force between the friction block 11 connected to the lower end of the first slide body 132 and the iron column 9 increases. When the inverter performs a low-speed and high-torque adjustment test of the motor 7, the load test of the motor 7 is simulated.

[0023] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. In the description of the present invention, unless otherwise specified, "multiple" means two or more; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An industrial frequency converter maintenance and test platform, characterized in that: The invention comprises a base frame (1), wherein the rear side of the base frame (1) is connected to a test cabinet (2), a top plate (3) is installed on the upper end of the base frame (1), and a slide table (4) is slidably connected to the upper end of the top plate (3), a horizontal bar (5) is installed on the inner side of the base frame (1), and the front side of the horizontal bar (5) is connected to the top of the top plate (3) through a slide bar (6), and a plurality of motors (7) are installed on the inner bottom of the base frame (1), and the motors (7) are connected to the slide table (4) through a first adjustment component (8), and the first adjustment component (8) is used for plugging and unplugging the power line connection end of the motor (7), and the output end of the motor (7) is rotatably connected to a connection seat (10) through an iron column (9), and the connection seat (10) is installed on the inner bottom of the test cabinet (2), and a friction block (11) is slidably connected in an opening at the upper end of the connection seat (10), and a fixing frame is arranged above the connection seat (10). (12), the fixing frame (12) is installed at the bottom of the inner side of the test cabinet (2), the friction block (11) is connected to the slide table (4) through a second adjustment component (13), the second adjustment component (13) is used to adjust the position of the friction block (11), a first slide bar (14) is slidably arranged in the groove on the right side of the upper end of the slide table (4), the first slide bar (14) is connected to a fixing column (17) through a fixing component (15), the fixing component (15) is used to adjust the position of the first slide bar (14) and the fixing column (17), a nozzle plate (18) is installed on the top of the fixing column (17), a fire extinguishing tank (19) is installed in the groove on the left side of the upper end of the slide table (4), the nozzle plate (18) is connected to the fixing component (15) through a third adjustment component (20), and the third adjustment component (20) is used to adjust the opening size of the nozzle plate (18).

2. The industrial frequency converter maintenance and test platform according to claim 1, wherein: The groove on the front side of the fixing column (17) is used for installing the power cord of the motor (7), and the end of the power cord in the groove of the fixing column (17) is used for connecting to a frequency converter.

3. The industrial frequency converter maintenance and test platform according to claim 2, characterized in that: The first adjustment component (8) comprises a No. 1 hydraulic box (81), the No. 1 hydraulic box (81) being mounted on the front side of the base frame (1), the inner side of the No. 1 hydraulic box (81) being slidably connected to a No. 1 plug body (82) via a spring, the upper end of the No. 1 plug body (82) being concavely and convexly matched with a No. 1 resistance block (83), the No. 1 resistance block (83) being mounted on the front side of the slide table (4), the inner cavity of the No. 1 hydraulic box (81) being connected to a No. 2 hydraulic box (84) via a hose, the No. 2 hydraulic box (84) being mounted on the front side of the lower end of the slide bar (6), the No. 2 hydraulic box (84) being slidably provided with a No. 2 plug body (85), the power line connection end of the motor (7) being fixed in the convex block at the lower end of the No. 2 plug body (85).

4. The industrial frequency converter maintenance and test platform according to claim 3, wherein: Both sides of the first abutment block (83) are designed as inclined structures, the inclined structure of the first abutment block (83) corresponds to the shape of the multiple notches on the upper end of the first plug body (82), the number of the multiple notches on the upper end of the first plug body (82) corresponds to the number and position of the motors (7), and the power connection ports on the upper ends of the multiple motors (7) are arranged at the same horizontal position.

5. An industrial frequency converter maintenance and test platform according to claim 4, characterized in that: The second adjustment component (13) includes an installation pipe (131). The installation pipe (131) is installed at the upper end of the connection seat (10). The outer side of the installation pipe (131) is nested and installed in the opening at the top of the fixed frame (12). A first sliding body (132) is slidably arranged at the lower end inside the installation pipe (131). The upper end of the first sliding body (132) is slidably connected to a second sliding body (133) through a spring. The upper end of the second sliding body (133) is threadedly connected to a threaded block (134). Above the threaded block (134), there is a second abutting block (135). The second abutting block (135) is installed at the rear side of the sliding table (4).

6. The industrial frequency converter maintenance and test platform according to claim 5, characterized in that: Both sides of the convex block at the upper end of the threaded block (134) are designed as inclined surface structures. The position of the inclined surface structure of the convex block at the upper end of the threaded block (134) corresponds to the movement track of the second abutting block (135). The height of the inclined surface structure of the convex block at the upper end of the threaded block (134) corresponds to the load of the motor (7).

7. An industrial frequency converter maintenance and test platform according to claim 6, characterized in that: The fixing component (15) includes a third hydraulic tank (151). The third hydraulic tank (151) is installed in the right-side groove at the upper end of the sliding table (4). A third plug body (152) is slidably connected inside the third hydraulic tank (151). The left top end of the third plug body (152) is connected to the first sliding bar (14). The inner cavity of the third hydraulic tank (151) is connected to two fourth hydraulic tanks (153) through a hose. The two fourth hydraulic tanks (153) are installed in the front and rear grooves at the left side of the upper end of the sliding table (4). A fourth plug body (154) is slidably connected to the right side inside the fourth hydraulic tank (153) through a spring. A fixing column (17) is installed in the groove at the right end of the fourth plug body (154).

8. An industrial frequency converter maintenance and test platform according to claim 7, characterized in that: The volumes of the two fourth hydraulic tanks (153) correspond to that of the third hydraulic tank (151).

9. The industrial frequency converter repair and test platform according to claim 8, wherein: The third adjustment component (20) includes a fifth hydraulic tank (201). The fifth hydraulic tank (201) is oppositely installed at the upper right sides of the two fourth plug bodies (154). A fifth plug body (202) is slidably connected to the inside of the two fifth hydraulic tanks (201) through a spring. An abutting strip (203) is slidably connected to the inner end of the fifth plug body (202). The abutting strip (203) is installed at the position of the front and rear openings at the upper end of the sliding table (4). The inner cavity of the fifth hydraulic tank (201) is connected to a sixth hydraulic tank (204) through a hose. A sixth plug body (205) is slidably connected inside the sixth hydraulic tank (204). The right end tooth opening of the sixth plug body (205) is meshed and connected to a tooth column (206). The tooth column (206) is installed on the convex block of the fourth plug body (154) through a bearing. The upper end of the tooth column (206) is rotatably arranged inside the nozzle plate (18). The front and rear sides of the upper end of the tooth column (206) are respectively meshed with a first adjustment block (207) and a second adjustment block (208). The first adjustment block (207) and the second adjustment block (208) are alternately slidably installed inside the inner cavity of the nozzle plate (18). The inner cavity of the nozzle plate (18) is connected to the fire extinguishing tank (19) through a hose. A temperature sensor is arranged at the position of the nozzle plate (18).

10. The industrial frequency converter repair and test platform according to claim 9, characterized in that: The abutment strip (203) is designed as an inclined surface structure, the inclined surface of the abutment strip (203) corresponds to the moving track of the No. 5 plug body (202), the first adjustment block (207) and the second adjustment block (208) are both designed as semicircular ring structures, and the outer diameter of the second adjustment block (208) corresponds to the inner diameter of the first adjustment block (207).

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