An industrial inverter maintenance and testing platform

Abstract

This invention discloses an industrial frequency converter repair and testing platform, relating to the field of frequency converter testing technology. A test cabinet is connected to the rear of the base frame, and a top plate is installed on the upper end of the base frame. A slide table is slidably connected to the upper end of the top plate. A horizontal bar is installed inside the base frame, and the front of the horizontal bar is connected to the top of the top plate via a sliding strip. Multiple motors are installed at the bottom inside the base frame, and the motors are connected to the slide table via a first adjustment component. By setting up the slide table, the first adjustment component, and the second adjustment component in coordination, during the frequency converter switching test with different specifications of motor loads, the power plug is automatically plugged and unplugged during motor switching, and the motor load is synchronously adjusted to simulate adjustment. By setting up the slide table, the first sliding strip, the fixing component, and the third adjustment component in coordination, fire-prone locations can be extinguished and cooled in a timely manner during the testing of low-speed, high-torque frequency converters of different specifications.

Description

Technical Field

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

[0002] An industrial frequency converter (VFD) repair and testing platform is a system used to evaluate and verify the performance of VFDs. It typically includes hardware and software components to enable comprehensive performance testing of the VFD. For low-speed, high-torque industrial VFDs, specifically designed for applications requiring high torque output at lower speeds, such as conveyor belt drive systems, cranes, and heavy machinery, testing requires simulating actual working conditions to test multiple performance aspects, including load testing, robust protection functions, and precise speed and torque control.

[0003] However, existing testing platforms require simulated load testing and adjustment with motors of different specifications during the testing of low-speed, high-torque industrial frequency converters. During this process, personnel need to switch power supplies when changing the connection between the frequency converter and different motor specifications. Furthermore, under simulated load testing with different motor specifications, personnel need to set and switch the simulated load for each connected motor individually, which is inconvenient because it's not convenient to adjust the motor load simulation simultaneously when connecting different motor specifications. Additionally, during the testing of low-speed, high-torque industrial frequency converters of different specifications, the voltage and current required by the motors being tested are relatively high. When some defective frequency converters are tested, some components such as resistors and power connections are prone to short circuits and fires. However, current testing platforms lack fire extinguishing devices for the fire-prone locations of frequency converters, making it inconvenient to extinguish fires promptly based on the fire-prone locations of different frequency converter specifications. Summary of the Invention

[0004] The purpose of this invention is to provide an industrial frequency converter maintenance and testing platform to solve the problems mentioned in the background art, such as the inconvenience of existing testing platforms in simulating motor load by adjusting the motor load while connecting motors of different specifications, and the inconvenience of timely fire extinguishing based on the fire-prone locations of frequency converters of different specifications. The technical solution of this invention addresses the problem of the overly simplistic nature of existing technical solutions and provides a solution that is significantly different from existing technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an industrial frequency converter repair and testing platform, comprising a base frame, a test cabinet connected to the rear side of the base frame, a top plate installed on the upper end of the base frame, a slide table slidably connected to the upper end of the top plate, a horizontal bar installed on the inner side of the base frame, the front side of the horizontal bar being connected to the top of the top plate via a sliding bar, multiple motors installed on the bottom inner side of the base frame, the motors being connected to the slide table via a first adjustment component, the first adjustment component being used for plugging and unplugging the motor power cable connection end, the motor output end being rotatably connected to a connecting seat via an iron column, the connecting seat being installed on the bottom inner side of the test cabinet, and an opening at the upper end of the connecting seat. A friction block is slidably connected, and a fixing frame is provided above the connecting seat. The fixing frame is installed on the bottom inside the test cabinet. The friction block is connected to the slide table through a second adjusting component, which 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 table. The first slide bar is connected to a fixing column through a fixing component, which is used to adjust the position of the first slide bar and the fixing column. A nozzle plate is installed on the top of the fixing column. A fire extinguishing canister is installed in the groove on the left side of the upper end of the slide table. The nozzle plate is connected to the fixing component through a third adjusting component, which 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 the installation of the motor power cable, and the power cable end inside the groove of the fixing column is used for the connection of the frequency converter.

[0007] Preferably, the first adjustment component includes a first hydraulic tank, which is installed on the front side of the base frame. A first plug is slidably connected to the inside of the first hydraulic tank via a spring. A first abutment block is connected to the upper end of the first plug with a concave-convex fit. The first abutment block is installed on the front side of the slide table. A second hydraulic tank is connected to the inner cavity of the first hydraulic tank via a hose. The second hydraulic tank is installed on the front side of the lower end of the sliding bar. A second plug is slidably disposed inside the second hydraulic tank. A motor power cord connection end is fixed in the protrusion on the front side of the lower end of the second plug.

[0008] Preferably, the first contact block is designed with inclined surfaces on both sides, and the inclined surface structure of the first contact block corresponds to the shape of multiple recesses on the upper end of the first plug. The number of multiple recesses on the upper end of the first plug corresponds to the number and position of the motors, and the power connection ports on the upper ends of the multiple motors are set at the same horizontal position.

[0009] Preferably, the second adjustment component includes a mounting tube, which is installed on the upper end of the connecting seat. The outer side of the mounting tube is nested in the top opening of the fixing frame. A first slide body is slidably arranged on the lower inner side of the mounting tube. A second slide body is slidably connected to the upper end of the first slide body by a spring. A threaded block is threadedly connected to the upper end of the second slide body. A second abutment block is arranged above the threaded block. The second abutment block is installed on the rear side of the slide table.

[0010] Preferably, the upper protrusion of the threaded block is designed with inclined surfaces on both sides, the position of the inclined surface of the upper protrusion of the threaded block corresponds to the moving trajectory of the second contact block, and the height of the inclined surface of the upper protrusion of the threaded block corresponds to the motor load.

[0011] Preferably, the fixing assembly includes a No. 3 hydraulic tank, which is installed in the groove on the right side of the upper end of the slide. A No. 3 plug is slidably connected to the inner side of the No. 3 hydraulic tank. The top left side of the No. 3 plug is connected to the first slide bar. The inner cavity of the No. 3 hydraulic tank is connected to two No. 4 hydraulic tanks through a hose. The two No. 4 hydraulic tanks are installed in the front and rear grooves on the left side of the upper end of the slide. A No. 4 plug is slidably connected to the right side of the inner side of the No. 4 hydraulic tank through a spring. A fixing post is installed in the groove on the right side of the No. 4 plug.

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

[0013] Preferably, the third adjustment component includes a No. 5 hydraulic tank, which is installed opposite to the upper right side of two No. 4 plugs. The No. 5 plugs are slidably connected to the inner sides of the two No. 5 hydraulic tanks via springs. An abutment strip is slidably connected to the inner end of each No. 5 plug, and the abutment strip is installed at the front and rear openings at the upper end of the slide. A No. 6 hydraulic tank is connected to the inner cavity of the No. 5 hydraulic tank via a hose. A No. 6 plug is slidably connected to the inner cavity of the No. 6 hydraulic tank. A toothed column is engaged with the right end of the No. 6 plug, and the toothed column is mounted on the protrusion of the No. 4 plug via a bearing. The upper end of the toothed column is rotatably disposed inside the nozzle plate. A first adjustment block and a second adjustment block are engaged with the front and rear sides of the upper end of the toothed column, respectively. The first and second adjustment blocks are alternately slidably installed inside the nozzle plate. The inner cavity of the nozzle plate is connected to the fire extinguishing tank via a hose, and a temperature sensor is installed at the nozzle plate.

[0014] Preferably, the abutment strip is designed as a sloping structure, and the sloping surface of the abutment strip corresponds to the movement trajectory of the No. 5 plug. The first adjusting block and the second adjusting block are both designed as semi-circular ring structures, and 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 present invention has the following beneficial effects:

[0016] This invention, by incorporating a slide table and a first adjustment component, allows for the following: During low-speed, high-torque inverter motor switching tests, the slide table drives a first contact block to engage with a first plug body, causing changes in the oil levels in the first and second hydraulic tanks, facilitating the insertion and removal of the motor power cable. Simultaneously, in conjunction with the second adjustment component, when switching between different motor specifications for inverter load testing, the slide table drives a second contact block to engage with a threaded block and a second sliding body, adjusting the resistance of the spring between the second and first sliding bodies. This increases the friction between the friction block and the connecting seat, simulating a motor load. This enhances the synchronous adjustment capability of the test platform during low-speed, high-torque inverter testing, thereby improving the inverter testing efficiency.

[0017] This invention, by comprising a sliding table, a first sliding bar, a fixing component, and a third adjusting component, allows for the fixing of different specifications of low-speed, high-torque industrial frequency converters during testing. A third plug, in conjunction with the first sliding bar, secures the frequency converters of varying specifications. Based on the fixed converter dimensions, the oil in hydraulic tanks three and four is used to adjust the position of the nozzle plate via hydraulic tank four, ensuring the nozzle plate remains centered on the frequency converter. Simultaneously, a fifth plug engages with a contact bar, adjusting the oil in hydraulic tanks five and six. The sixth plug then drives a gear column, adjusting the first and second adjusting blocks to correspondingly adjust the frequency converter dimensions, thereby synchronously adjusting the nozzle size. This allows for timely fire suppression and cooling of potentially ignited areas during testing of low-speed, high-torque frequency converters, preventing the spread of fire from damaging the testing platform. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the inner side of the test cabinet and the rear view of the base frame of the present invention;

[0020] Figure 3 This is a front view schematic diagram of the base frame structure of the present invention;

[0021] Figure 4 This is a cross-sectional view of the slide and the first adjustment component of the present invention;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 This is a schematic diagram of the slide, motor, and second adjustment component of the present invention;

[0024] Figure 7 This is a schematic diagram of the split cross-sectional structure of the iron column, connecting seat, and second adjustment component of the present invention;

[0025] Figure 8This is a schematic diagram of the right-side structure of the slide table of the present invention;

[0026] Figure 9 This is a cross-sectional view of the fixing component of the present invention;

[0027] Figure 10 This is a schematic diagram of the left-side structure of the slide and fire extinguisher of the present invention;

[0028] Figure 11 This is a cross-sectional view of the fourth plug body, the fixing column, and the third adjustment component of the present invention.

[0029] Figure 12 for Figure 11 Enlarged view of point B in the middle;

[0030] Figure 13 This is a schematic diagram of the No. 4 plug body, fixing column and nozzle plate of the present invention;

[0031] Figure 14 This is a schematic diagram of the inner structure of the nozzle disk of the present invention;

[0032] Figure 15 This is a top view of the structure of the first and second adjusting blocks of the present invention.

[0033] In the diagram: 1. Base frame; 2. Test cabinet; 3. Top plate; 4. Slide table; 5. Horizontal bar; 6. Sliding bar; 7. Motor; 8. First adjustment assembly; 81. Hydraulic tank No. 1; 82. Plug No. 1; 83. Contact block No. 1; 84. Hydraulic tank No. 2; 85. Plug No. 2; 9. Iron column; 10. Connecting seat; 11. Friction block; 12. Fixing frame; 13. Second adjustment assembly; 131. Mounting pipe; 132. First slide body; 133. Second slide body; 134. Threaded block; 135. 15. No. 2 contact block; 14. First sliding bar; 15. Fixing component; 151. No. 3 hydraulic tank; 152. No. 3 plug; 153. No. 4 hydraulic tank; 154. No. 4 plug; 17. Fixing column; 18. No. 19. No. 10. Fire extinguisher; 20. Third adjusting component; 201. No. 5 hydraulic tank; 202. No. 5 plug; 203. Contact bar; 204. No. 6 hydraulic tank; 205. No. 6 plug; 206. Toothed column; 207. First adjusting block; 208. Second adjusting block. Detailed Implementation

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figures 1 to 8This invention provides a technical solution: an industrial frequency converter repair and testing platform. A test cabinet 2 is connected to the rear of a base frame 1. 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 inside the base frame 1, and the front of the horizontal bar 5 is connected to the top of the top plate 3 via a sliding bar 6. Multiple motors 7 are installed at the bottom inside the base frame 1. The motors 7 are connected to the slide table 4 via a first adjusting component 8. The first adjusting component 8 includes a first hydraulic tank 81, which is installed on the front of the base frame 1. A first plug 82 is slidably connected to the inside of the first hydraulic tank 81 via a spring. A first contact block 83 is connected to the upper end of the first plug 82 with a concave-convex fit. The first contact block 83 is installed on the front of the slide table 4, and both sides of the first contact block 83 are designed with a sloping structure. The inclined structure of the first contact block 83 corresponds to the shape of multiple notches on the upper end of the first plug 82. The number of notches on the upper end of the first plug 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 set at the same horizontal position. The inner cavity of the first hydraulic tank 81 is connected to the second hydraulic tank 84 through a hose. The second hydraulic tank 84 is installed on the lower front side of the sliding bar 6. The second plug 85 is slidably installed inside the second hydraulic tank 84. The power cable connection end of the motor 7 is fixed in the protrusion on the lower front side of the second plug 85. The first adjustment component 8 is used for plugging and unplugging the power cable 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 provided above the connecting seat 10. The fixing frame 12 is installed on the bottom inner side of the test cabinet 2. The friction block 11 is connected to the slide table 4 through the second adjustment component 13. The second adjustment component 13 includes a mounting tube 131, which is installed on the upper end of the connecting seat 10. The outer side of the mounting tube 131 is nested in the top opening of the fixing frame 12. A first slide body 132 is slidably provided on the lower inner side of the mounting tube 131. A second slide body 133 is slidably connected to the upper end of the first slide body 132 through a spring. A threaded block 134 is threadedly connected to the upper end of the second slide body 133. A second abutment block 135 is provided above the threaded block 134. The second abutment block 135 is installed on the rear side of the slide table 4. The two sides of the protrusion on the upper end of the threaded block 134 are designed with a bevel structure. The position of the upper protrusion inclined surface structure of slide 4 corresponds to the movement trajectory of the second contact block 135. The height of the upper protrusion inclined surface structure of threaded block 134 corresponds to the load of motor 7. The second adjustment component 13 is used to adjust the position of friction block 11. A first slide bar 14 is slidably installed in the groove on the right side of the upper end of slide table 4. The first slide bar 14 is connected to a fixed 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 fixed column 17. The groove on the front side of the fixed column 17 is used for the installation of the power cord of motor 7. The power cord end in the groove of the fixed column 17 is used for the connection of frequency converter. A nozzle plate 18 is installed on the top of the fixed column 17. A fire extinguisher 19 is installed in the groove on the left side of the upper end of slide table 4. The nozzle plate 18 is connected to the fixing component 15 through a third adjustment component 20.The third adjustment component 20 is used to adjust the opening size of the nozzle disk 18.

[0036] During the test of switching motor 7 in the low-speed, high-torque frequency converter, the operator moves the slide table 4 on the top plate 3, simultaneously driving the sliding bar 6 to slide on the horizontal bar 5. This causes the first contact block 83 to move against the first plug 82 inside the first hydraulic tank 81, squeezing oil into the second hydraulic tank 84. This causes the second plug 85 to move upward, allowing the power cable end of motor 7 to be pulled out. When the first contact block 83 moves to another groove position on the first plug 82, the spring in the first hydraulic tank 81 drives the first plug 82 to return to its original position. In position, the second plug 85 in the second hydraulic tank 84 synchronously resets and moves downward to insert the power cable end of the motor 7, completing the switching of the motor 7. At the same time, in conjunction with the second adjustment component 13, when switching different specifications of motor 7 for inverter load testing, the slide table 4 drives the second contact block 135 to abut against the threaded block 134 and the second slide body 133, adjusting the resistance of the spring between the second slide body 133 and the first slide body 132, thereby increasing the friction between the friction block 11 and the connecting seat 10, simulating the load of the motor 7.

[0037] Example 2: Based on Example 1, please refer to... Figures 1 to 3 and Figures 8 to 15A test cabinet 2 is connected to the rear side of the base frame 1. 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 sliding bar 6. Multiple motors 7 are installed at the bottom inner side of the base frame 1. The motors 7 are connected to the slide table 4 through a first adjusting component 8. The first adjusting component 8 is used for plugging and unplugging the power cord connection of the motors 7. The output end of the motors 7 is rotatably connected to a connecting seat 10 through an iron column 9. The connecting seat 10 is installed at the bottom inner side of the test cabinet 2. A friction block 11 is slidably connected in the opening at the upper end of the connecting seat 10. A fixing frame 12 is set above the connecting seat 10 and is installed at the bottom inner side of the test cabinet 2. The friction block 11 is connected to the slide table 4 through a second adjusting component 13. 13 is used for adjusting the position of friction block 11. A first slide bar 14 is slidably disposed 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 fixed post 17 through a fixing component 15. The fixing component 15 includes a third hydraulic tank 151, which is installed in the groove on the right side of the upper end of the slide table 4. A third plug 152 is slidably connected to the inner side of the third hydraulic tank 151. The top left side of the third plug 152 is connected to the first slide bar 14. Two fourth hydraulic tanks 153 are connected to the inner cavity of the third hydraulic tank 151 through a hose. The two fourth hydraulic tanks 153 are installed in the front and rear grooves on the left side of the upper end of the slide table 4. The volume of the two fourth hydraulic tanks 153 corresponds to that of the third hydraulic tank 151. A fourth plug 17 is slidably connected to the right side of the inner side of the fourth hydraulic tank 153 through a spring. 54. A fixing post 17 is installed in the groove on the right side of the fourth plug 154. The fixing component 15 is used for adjusting the position of the first slide bar 14 and the fixing post 17. The groove on the front side of the fixing post 17 is used for installing the power cord of the motor 7. The power cord end in the groove of the fixing post 17 is used for the inverter connection. A nozzle plate 18 is installed on the top of the fixing post 17. A fire extinguisher 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 the third adjustment component 20. The third adjustment component 20 includes a fifth hydraulic tank 201. The fifth hydraulic tank 201 is installed opposite to the upper right side of the two fourth plugs 154. The inner sides of the two fifth hydraulic tanks 201 are slidably connected to the fifth plug 202 by springs. The inner end of the fifth plug 202 is slidably connected to the abutment strip 203. Contact strip 203 is installed at the front and rear openings on the upper end of slide table 4. Hydraulic tank 201 (number 5) is connected to hydraulic tank 204 (number 6) via a hose. Plug 205 (number 6) is slidably connected inside hydraulic tank 204. A toothed column 206 is engaged with the right end of plug 205. The toothed column 206 is mounted on the protrusion of plug 154 (number 4) via a bearing. The upper end of the toothed column 206 is rotatably positioned inside nozzle plate 18. A first adjusting block 207 and a second adjusting block 208 are engaged with the front and rear sides of the upper end of the toothed column 206, respectively. The first adjusting block 207 and the second adjusting block 208 are alternately slidably installed inside nozzle plate 18. The inside of nozzle plate 18 is connected to fire extinguisher 19 via a hose. A temperature sensor is installed at the nozzle plate 18. Contact strip 203 is designed with a beveled structure.The inclined surface of the contact strip 203 corresponds to the moving trajectory of the fifth plug 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 component 20 is used to adjust the opening size of the nozzle disc 18.

[0038] During testing of low-speed, high-torque industrial frequency converters of different specifications, the first slide bar 14 moves to the right on the slide table 4 and moves to a width corresponding to the frequency converter to be tested. The frequency converter is then placed on the left side of the first slide bar 14 and clamped in place. At the same time, the third plug 152, in coordination with the first slide bar 14, adjusts to the corresponding position according to the fixed size of the frequency converter, squeezing the corresponding oil in the third hydraulic tank 151 into the fourth hydraulic tank 153. The position of the nozzle plate 18 is adjusted by the fourth hydraulic tank 153 so that the position of the nozzle plate 18 is always kept in the center position corresponding to the frequency converter. At the same time, the corresponding distance of the contact movement between the fifth plug 202 and the contact bar 203 is coordinated to adjust the oil in the fifth hydraulic tank 201 and the sixth hydraulic tank 204. The sixth plug 205 drives the toothed column 206 to adjust the first adjusting block 207 and the second adjusting block 208 in response to the size of the frequency converter, thereby synchronously adjusting the size of the nozzle of the nozzle plate 18.

[0039] Working Principle: When using this industrial frequency converter repair and testing platform, the operator first moves the first slide bar 14 to the right on the slide table 4 until it corresponds to the width of the frequency converter to be tested. The frequency converter is then placed on the left side of the first slide bar 14 and clamped securely. Simultaneously, 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 terminal of the frequency converter. During this process, as the first slide bar 14 adjusts its position according to the width of different frequency converter models, the third plug 152 slides to the right within the third hydraulic tank 151, squeezing oil through the hose into the fourth hydraulic tank 153. This synchronizes the position adjustment of the fourth plug 154, the fixing column 17, and the nozzle plate 18. Simultaneously, as the fourth plug 154 moves, it drives the fifth plug 202 to contact the contact bar 2. 03 The inclined plane slides against the sliding surface, and with the inclined plane of the contact strip 203, the fifth plug 202 is in the fifth hydraulic tank 201, and the oil is squeezed into the sixth hydraulic tank 204 through the hose, and the sixth plug 205 is moved to the right, so that the front tooth of the sixth plug 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 size of the nozzle of the nozzle plate 18 is adjusted accordingly according to the different models of frequency converters. At the same time, the position of the nozzle plate 18 is always kept relatively centered with the test transformer. When the frequency converter is tested for high torque and low speed, the frequency converter short-circuit and high temperature occurs, and an open flame appears. The temperature sensor on the nozzle plate 18 detects the abnormal temperature and opens the fire extinguishing tank 19 through the controller to release the gas.

[0040] Based on the above, when the frequency converter performs the low-speed, high-torque adjustment test of motor 7, it is necessary to perform load tests on motors 7 of different specifications. During this test, the operator moves the slide table 4 on the top plate 3, which simultaneously drives the sliding bar 6 to slide on the horizontal bar 5, and causes the first contact block 83 to move against the first plug 82 in the first hydraulic tank 81, squeezing the oil into the second hydraulic tank 84, causing the second plug 85 to move upward and pull out the power cable end of motor 7. When the first contact block 83 moves to another groove position on the first plug 82, the spring in the first hydraulic tank 81 drives the first plug 82 to reset, and the second plug 85 in the second hydraulic tank 84 simultaneously resets and moves downward to insert the power cable end of motor 7, completing the switching of motor 7.

[0041] During the above process, when the slide table 4 moves the first contact block 83 to another groove position on the first plug body 82, and the motor 7 is switched, it simultaneously moves the second contact block 135 and abuts against the upper inclined surface of the threaded block 134, causing the threaded block 134 and the second slide body 133 to move downward in the mounting tube 131 to compress the spring. When the spring at the upper end of the first slide body 132 contracts, the resistance increases, which increases the friction between the friction block 11 connected to the lower end of the first slide body 132 and the iron column 9. When the frequency converter performs a low-speed, high-torque adjustment test of the motor 7, it simulates the load test of the motor 7.

[0042] Contents not described in detail in this specification are prior art known to those skilled in the art. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate orientations or positional relationships based on the accompanying drawings, and are used only for ease of description and simplification, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An industrial frequency converter repair and testing platform, characterized in that: The system includes a base frame (1), a test cabinet (2) connected to the rear of the base frame (1), a top plate (3) installed on the upper end of the base frame (1), a slide table (4) slidably connected to the upper end of the top plate (3), a crossbar (5) installed on the inner side of the base frame (1), the front side of the crossbar (5) being connected to the top of the top plate (3) via a slide bar (6), multiple motors (7) installed on the bottom inner side of the base frame (1), the motors (7) being connected to the slide table (4) via a first adjustment component (8), the first adjustment component (8) being used for plugging and unplugging the power cord connection of the motors (7), the output end of the motors (7) being rotatably connected to a connecting seat (10) via an iron column (9), the connecting seat (10) being installed on the bottom inner side of the test cabinet (2), a friction block (11) slidably connected in the opening at the upper end of the connecting seat (10), and a fixing frame being provided above the connecting seat (10). (12) The fixing frame (12) is installed on the bottom of the inner side of the test cabinet (2). The friction block (11) is connected to the slide table (4) through the 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 the 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 extinguisher (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 the third adjustment component (20). The third adjustment component (20) is used to adjust the opening size of the nozzle plate (18).

2. The industrial frequency converter repair and testing platform according to claim 1, characterized in that: The groove on the front side of the fixing post (17) is used for the installation of the power line of the motor (7), and the power line end in the groove of the fixing post (17) is used for the connection of the frequency converter.

3. The industrial frequency converter repair and testing platform according to claim 2, characterized in that: The first adjustment component (8) includes a first hydraulic tank (81), which is installed on the front side of the base frame (1). A first plug (82) is slidably connected to the inside of the first hydraulic tank (81) by a spring. A first abutment block (83) is connected to the upper end of the first plug (82) by a concave-convex fit. The first abutment block (83) is installed on the front side of the slide table (4). A second hydraulic tank (84) is connected to the inner cavity of the first hydraulic tank (81) by a hose. The second hydraulic tank (84) is installed on the front side of the lower end of the sliding bar (6). A second plug (85) is slidably arranged inside the second hydraulic tank (84). A motor (7) power cord connection end is fixed in the protrusion on the front side of the lower end of the second plug (85).

4. The industrial frequency converter repair and testing platform according to claim 3, characterized in that: The first contact block (83) is designed with a sloping structure on both sides. The sloping structure of the first contact block (83) corresponds to the shape of multiple recesses on the upper end of the first plug (82). The number of multiple recesses on the upper end of the first plug (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 set at the same horizontal position.

5. The industrial frequency converter repair and testing platform according to claim 4, characterized in that: The second adjustment component (13) includes a mounting tube (131), which is installed on the upper end of the connecting seat (10). The outer side of the mounting tube (131) is nested in the top opening of the fixing frame (12). A first slide body (132) is slidably arranged on the lower inner side of the mounting tube (131). A second slide body (133) is slidably connected to the upper end of the first slide body (132) by a spring. A threaded block (134) is threadedly connected to the upper end of the second slide body (133). A second abutment block (135) is arranged above the threaded block (134). The second abutment block (135) is installed on the rear side of the slide table (4).

6. The industrial frequency converter repair and testing platform according to claim 5, characterized in that: The upper protrusion of the threaded block (134) is designed with inclined surfaces on both sides. The position of the inclined surface of the upper protrusion of the threaded block (134) corresponds to the movement trajectory of the second contact block (135). The height of the inclined surface of the upper protrusion of the threaded block (134) corresponds to the load of the motor (7).

7. The industrial frequency converter repair and testing platform according to claim 6, characterized in that: The fixing component (15) includes a No. 3 hydraulic tank (151), which is installed in the groove on the right side of the upper end of the slide (4). A No. 3 plug (152) is slidably connected to the inner side of the No. 3 hydraulic tank (151). The top left side of the No. 3 plug (152) is connected to the first slide bar (14). The inner cavity of the No. 3 hydraulic tank (151) is connected to two No. 4 hydraulic tanks (153) through a hose. The two No. 4 hydraulic tanks (153) are installed in the front and rear grooves on the left side of the upper end of the slide (4). A No. 4 plug (154) is slidably connected to the right side of the inner side of the No. 4 hydraulic tank (153) through a spring. A fixing column (17) is installed in the groove on the right side of the No. 4 plug (154).

8. The industrial frequency converter repair and testing platform according to claim 7, characterized in that: The volumes of the two No. 4 hydraulic tanks (153) correspond to those of the No. 3 hydraulic tank (151).

9. The industrial frequency converter repair and testing platform according to claim 8, characterized in that: The third adjustment component (20) includes a No. 5 hydraulic tank (201), which is installed opposite to the upper right side of two No. 4 plugs (154). The inner sides of the two No. 5 hydraulic tanks (201) are slidably connected to No. 5 plugs (202) via springs. An abutment strip (203) is slidably connected to the inner end of each No. 5 plug (202). The abutment strip (203) is installed at the front and rear openings on the upper end of the slide (4). A No. 6 hydraulic tank (204) is connected to the inner cavity of the No. 5 hydraulic tank (201) via a hose. A No. 6 plug (205) is slidably connected inside the No. 6 hydraulic tank (204). The right end of the sixth plug (205) is connected to a toothed column (206). The toothed column (206) is mounted on the protrusion of the fourth plug (154) by a bearing. The upper end of the toothed column (206) is rotatably set inside the nozzle plate (18). The front and rear sides of the upper end of the toothed column (206) are respectively engaged with the first adjusting block (207) and the second adjusting block (208). The first adjusting block (207) and the second adjusting block (208) are alternately slidably installed in the inner cavity of the nozzle plate (18). The inner cavity of the nozzle plate (18) is connected to the fire extinguishing canister (19) through a hose. A temperature sensor is set at the position of the nozzle plate (18).

10. An industrial frequency converter repair and testing platform according to claim 9, characterized in that: The abutment strip (203) is designed as a sloping structure. The sloping surface of the abutment strip (203) corresponds to the movement trajectory of the fifth plug (202). The first adjustment block (207) and the second adjustment block (208) are both designed as semi-circular ring structures. The outer diameter of the second adjustment block (208) corresponds to the inner diameter of the first adjustment block (207).

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