Workbench structure for detecting frequency converter
Through an integrated moving and resetting structure and dust removal design, the automation and dust removal problems of the frequency converter testing device are solved, realizing an efficient and convenient testing process and ensuring the reliability and testing accuracy of the frequency converter.
Patent Information
- Application Number
- CN202511641349.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-02-03
AI Technical Summary
Existing inverter testing devices suffer from problems such as air system leakage, unstable air pressure leading to incomplete pushing and improper movement of the testing plug, and lack of dust removal mechanism, which affects testing efficiency and reliability.
It adopts an integrated moving and resetting structure, and uses the synergistic action of motor-driven threaded rod, push plate and spring to achieve automatic push-in and plugging. The dust removal structure is designed with air pump, nozzle and guide plate to achieve all-round dust removal. Combined with vibration spring to remove impurities, it avoids the use of air circuit system.
It achieves fully automated testing of frequency converters, improves operational convenience and testing efficiency, ensures thorough dust removal and cleaning, and prevents dust from affecting testing results.
Smart Images
Figure CN121454098A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of frequency converters, and particularly relates to a workbench structure for detecting a frequency converter. BACKGROUND
[0002] A frequency converter is a power device for precisely controlling an alternating current motor by changing the frequency and voltage of a power supply. To ensure its reliable operation, it is essential to detect itself, which is essentially a precise measurement of electrical variables.
[0003] According to the search, the patent CN113075490B proposes a "flat device testing device and testing method", which places the frequency converter body on the slide, then steps on the pedal to exhaust the gas in the air cylinder, and then the gas enters the long cylinder on the workbench through the first connecting pipe to push the circular plate to move, which drives the circular rod to push the second pushing mechanism to work. When the second pushing mechanism works, it will push the fixed plate to move, thereby pushing the frequency converter body to move, so that it is inserted into the connecting terminal, and at the same time, the gas enters the second connecting pipe and then enters the third connecting pipe to drive the first pushing mechanism to work, so that the first rack plate drives the detection plug to move downward, thereby making the detection plug inserted into the frequency converter body for testing.
[0004] The above testing device uses a pneumatic system including an air cylinder, multiple sets of connecting pipes, and an air bag to realize the pushing and detection actions. The gas circuit system has the risks of leakage and unstable gas pressure, which affects the testing effect due to the problems of the frequency converter not being pushed to the right position and the detection plug not being moved to the right position. In addition, the operation of the pedal by the operator increases the complexity, and the full-process automation of "placing for detection and taking down for resetting" cannot be realized, which affects the detection efficiency.
[0005] In addition, the above testing device lacks an effective dust removal mechanism. During the insertion and detection process of the frequency converter, dust or debris is easily accumulated on the surface of the shell, which not only affects the reliability of the electrical connection and causes the detection data to deviate, but also has the risk of damaging the precision interface due to foreign matter intervention. SUMMARY
[0006] The present application aims to solve the shortcomings in the background art and proposes a workbench structure for detecting a frequency converter.
[0007] In order to achieve the above object, the present application adopts the following technical scheme: A workbench structure for detecting a frequency converter, comprising: a workbench, a connecting terminal, a support frame, and a detection plug, the top of the workbench is provided with a moving and resetting structure and a dust removal structure, the moving and resetting structure comprises a motor mounted on the side wall of the workbench, the top of the workbench is provided with a groove, the inside of the groove is slidably connected with a push plate and a movable block, the movable block is provided with a through slot, the inside of the groove is rotatably connected with a threaded rod, the threaded rod penetrates through the through slot and the push plate and is rotatably connected with the push plate, the outside of the threaded rod is sleeved with a first spring, one end of the first spring is fixed with one end of the groove, and the other end of the first spring is connected with the movable block, the top of the movable block is fixed with a backing plate, the end of the workbench away from the motor is fixed with a support plate, the bottom of the support plate is fixed with a first magnet, the connecting terminal is mounted on the support plate and above the first magnet, and the top of the backing plate is mounted with a first iron plate through an actuating structure.
[0008] As a further scheme of the present application, the moving and resetting structure further comprises a vertical slot arranged on the support frame, a vertical rod is slidably connected with the support frame along the vertical slot, the detection plug is fixed at the bottom of the vertical rod, the bottom of the top end of the support frame is provided with a sliding groove, a second iron plate is slidably connected with the support frame along the sliding groove, a second magnet is fixed on the first iron plate, a second button switch is mounted on the top of the first iron plate and fixed with a stop block, the second button switch is electrically connected with the second magnet, the second magnet cooperates with the second iron plate, a third spring is mounted in the sliding groove and connected with the second iron plate, the surface of the second iron plate is provided with an inclined slot, and the vertical rod is fixed with a plug, and the rear end of the plug is located in the inclined slot.
[0009] As a further scheme of the present application, the dust removal structure comprises hollow pipes arranged on the top of the workbench, a gas pump is mounted on the bottom of the workbench, the gas pump is connected with the hollow pipes through air pipes, and the hollow pipes are uniformly provided with nozzles.
[0010] As a further scheme of the present application, the dust removal structure further comprises guide plates fixed at the air outlets of the nozzles, the guide plates are distributed on both sides and in the middle, the guide plates on both sides are obliquely arranged, and the surfaces of the guide plates on both sides are fixed with guide strips, the guide strips are distributed on both sides and in the middle, and the guide strips on both sides are obliquely arranged.
[0011] As a further scheme of the present application, the starting structure comprises a hollow column fixed at the top of the base plate, a movable column is slidably connected in the hollow column, the hollow column is connected with the bottom of the movable column through the second spring, the first iron plate is connected with the movable column, the first iron plate is matched with the first magnet, a first button switch is installed at the top of the base plate, and the first button switch is electrically connected with the motor and the air pump.
[0012] As a further scheme of the present application, the moving and resetting structure is linked with a impurity removing assembly, the impurity removing assembly comprises a circular groove arranged at the top of the push plate, and a vibrating spring is fixed in the circular groove.
[0013] As a further scheme of the present application, the threaded rod is linked with a heat dissipation structure for detecting the temperature of the plug, the heat dissipation structure comprises a hidden air slot on the workbench, a worm wheel is rotatably connected in the air slot, a worm is fixed at one end of the threaded rod, the worm extends into the air slot and is engaged with the worm wheel, and a blade is fixed at the top of the worm wheel.
[0014] As a further scheme of the present application, a fixed plate is fixed at the top of the first iron plate, a notch is arranged at a position away from the fixed plate, a fourth spring is installed in the notch, and a movable plate is slidably connected in the notch.
[0015] The workbench structure for detecting the frequency converter has the advantages that: 1. The integrated moving and resetting structure is arranged, under the driving of the motor, the threaded rod, the push plate and the first spring are cooperated to realize the automatic pushing and plugging of the frequency converter to be detected; after the detection is completed, the whole mechanism is automatically reset at the moment when the frequency converter is taken off, by the clever cooperation of the disappearance of the magnetic force of the second magnet and the resetting of the first spring. The structure realizes the full-process automation of "putting in for detection and taking off for resetting", significantly improves the detection efficiency and operation convenience, and the structure does not need to use the air system throughout the process, completely avoids the gas leakage and unstable air pressure affecting the detection effect.
[0016] 2. The dust removing structure and the impurity removing assembly are arranged, after the air pump is started, the air flow is conveyed to the nozzle through the hollow pipe, and two-stage shunting and multi-angle guiding are realized through the inclined guide plate and the guide strip, a comprehensive three-dimensional air curtain is formed, the frequency converter is efficiently and non-dead-angle swept, and the vibration force and the impact force generated by the impact vibrating spring are jointly applied to the first iron plate during the resetting of the base plate and the first iron plate driven by the first spring, so that the particles and impurities attached to the first iron plate are effectively removed. The design has the functions of active blowing and automatic cleaning, and effectively prevents the dust and other impurities from affecting the detection efficiency of the frequency converter. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 The workbench structure according to the present application is shown in the figure; Figure 2 The workbench structure according to the present application is shown in the figure; Figure 1 The figure shows the empty slot after the rotation angle; Figure 3 The workbench structure according to the present application is shown in the figure; Figure 1 The figure shows the top view of the partial structure; Figure 4 The workbench structure according to the present application is shown in the figure; Figure 1 The figure shows the partial structure; Figure 5 The workbench structure according to the present application is shown in the figure; Figure 5 The figure shows the front view; Figure 6 The figure shows the internal structure of the hollow column according to the present application; Figure 7 The figure shows the structure of the support plate according to the present application; Figure 8 The figure shows the structure of the nozzle outlet according to the present application; Figure 9 The figure shows the structure of the push plate according to the present application; Figure 10 The figure shows the enlarged view of A in the figure; Figure 2 Figure 11 The figure shows the bottom structure of the support frame according to the present application.
[0018] In the figure: 1, workbench; 2, connecting terminal; 3, support frame; 4, motor; 5, groove; 6, push plate; 7, movable block; 8, through slot; 9, threaded rod; 10, No. 1 spring; 11, hollow pipe; 12, air pump; 13, nozzle; 14, backing plate; 15, No. 1 iron plate; 16, hollow column; 17, movable column; 18, No. 2 spring; 19, No. 1 push button switch; 20, support plate; 21, No. 1 magnet; 22, guide plate; 23, guide strip; 25, circular groove; 26, vibration spring; 27, vertical slot; 28, vertical rod; 29, detection plug; 30, sliding slot; 31, No. 2 iron plate; 32, No. 3 spring; 33, inclined slot; 34, insertion block; 35, empty slot; 36, worm wheel; 37, worm; 38, blade; 39, fixed plate; 40, notch; 41, No. 4 spring; 42, moving plate; 43, No. 2 magnet; 44, No. 2 push button switch; 45, stop block. DETAILED DESCRIPTION
[0019] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.
[0020] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the overall structure of the present application, and its embodiments will be described below.
[0021] A workbench structure for detecting a frequency converter, comprising: a workbench 1, a connecting terminal 2, a support frame 3, a detection plug 29, the top of the workbench 1 is provided with a moving and resetting structure and a dust removal structure, the moving and resetting structure comprises a motor 4 mounted on the side wall of the workbench 1, the top of the workbench 1 is provided with a groove 5, the inside of the groove 5 is slidably connected with a push plate 6 and a movable block 7, the movable block 7 is provided with a through groove 8, the inside of the groove 5 is rotatably connected with a threaded rod 9, the threaded rod 9 penetrates through the through groove 8 and the push plate 6 and is rotatably connected with the push plate 6, the outside of the threaded rod 9 is sleeved with a first spring 10, one end of the first spring 10 is fixed with one end of the groove 5, and the other end of the first spring 10 is connected with the movable block 7, the top of the movable block 7 is fixed with a backing plate 14, the top of the workbench 1 away from the motor 4 is fixed with a support plate 20, the bottom of the support plate 20 is fixed with a first magnet 21, the connecting terminal 2 is mounted on the support plate 20 and located above the first magnet 21, and the top of the backing plate 14 is mounted with a first iron plate 15 through an actuating structure.
[0022] Further, the moving and resetting structure further comprises vertical grooves 27 arranged on the support frame 3, a vertical rod 28 is slidably connected with the vertical grooves 27, the detection plug 29 is fixed at the bottom of the vertical rod 28, a sliding groove 30 is arranged at the bottom of the top end of the support frame 3, a second iron plate 31 is slidably connected with the sliding groove 30, the first iron plate 15 is fixed with the second magnet 43, a second button switch 44 is mounted on the top of the first iron plate 15 and fixed with a stop block 45, the second button switch 44 is electrically connected with the second magnet 43, the second magnet 43 cooperates with the second iron plate 31, the sliding groove 30 is internally mounted with a third spring 32 connected with the second iron plate 31, the surface of the second iron plate 31 is provided with an inclined groove 33, the vertical rod 28 is fixed with an insertion block 34, and the rear end of the insertion block 34 is located in the inclined groove 33, the top of the first iron plate 15 is fixed with a fixed plate 39, the position of the first iron plate 15 away from the fixed plate 39 is provided with a slot 40, the slot 40 is internally mounted with a fourth spring 41 and slidably connected with a moving plate 42.
[0023] And the starting structure comprises a hollow column 16 fixed on the top of the pad plate 14, a movable column 17 is slidably connected in the hollow column 16, the hollow column 16 is connected with the bottom of the movable column 17 through the second spring 18 arranged inside, the first iron plate 15 is connected with the movable column 17, and the first iron plate 15 cooperates with the first magnet 21, a first button switch 19 is mounted on the top of the pad plate 14, and the first button switch 19 is electrically connected with the motor 4 and the air pump 12.
[0024] It can be concluded that since the first iron plate 15 is subjected to the weight of the frequency converter, then the movable column 17 descends in the hollow column 16 and compresses the second spring 18, at this time the first iron plate 15 descends and presses the first button switch 19, the frequency converter directly presses the second button switch 44 so that the second magnet 43 is electrified to generate magnetic force, the stop block 45 is used to prevent the frequency converter from directly pressing the second button switch 44 and causing damage, the air pump 12 and the motor 4 are electrified by pressing the first button switch 19, for example, the working time of the air pump 12 and the motor 4 is set to twenty seconds, after the first button switch 19 is pressed, the air pump 12 works for twenty seconds and stops, and the first button switch 19 needs to be pressed again for the next work; the working time of the motor 4 is divided into the first ten seconds and the second ten seconds, in which the motor 4 rotates forward in the first ten seconds and reverses in the second ten seconds to reset the push plate 6, similarly, the motor 4 stops after working for twenty seconds, and the first button switch 19 needs to be pressed again for the next work.
[0025] The motor 4 rotates forward for ten seconds, the threaded rod 9 rotates forward, and the push plate 6 moves inside the groove 5. The push plate 6 pushes the movable block 7, the backing plate 14, the first iron plate 15, and the frequency converter moves towards the connecting terminal 2. After ten seconds, the frequency converter is inserted into the connecting terminal 2. After the first iron plate 15 descends, the bottom of the first iron plate 15 contacts the top of the hollow column 16. The first iron plate 15 is in the same horizontal position as the first magnet 21. When the frequency converter is inserted into the connecting terminal 2, the first iron plate 15 contacts the first magnet 21 and is attracted by the magnetic force of the first magnet 21. At this time, the second magnet 43 is in the position of the support frame 3 and is in the same horizontal position as the second iron plate 31. The second magnet 43 generates a magnetic force when it is electrified, which generates a magnetic attraction force on the second iron plate 31. The second iron plate 31 moves in the sliding groove 30 against the resistance of the third spring 32. When the second iron plate 31 moves towards the second magnet 43, the inclined groove 33 on the surface of the second iron plate 31 moves. Since the plug 34 is inside the inclined groove 33, the vertical rod 28 descends in the vertical groove 27 when the inclined groove 33 moves. The detection plug 29 is inserted into the frequency converter for testing.
[0026] After the above movement work is completed, the motor 4 reverses for ten seconds. Then, the threaded rod 9 reverses, the push plate 6 moves backward to the initial position, and waits for the next movement work. Although the push plate 6 moves backward to the initial position, the magnetic attraction force between the first iron plate 15 and the first magnet 21 is greater than the elastic restoring force of the first spring 10. Therefore, the backing plate 14, the first iron plate 15, and the frequency converter are in a static state. When the detection is completed, the frequency converter is lifted from the top of the first iron plate 15 and removed. When the frequency converter is lifted, the second button switch 44 is popped up, the second magnet 43 is de-energized, the magnetic attraction force disappears, the second iron plate 31 moves backward under the action of the third spring 32, and the detection plug 29 is separated from the inserted state. At this time, the purpose of lifting the detection plug 29 is to completely remove the frequency converter and prevent the detection plug 29 from blocking the removal of the frequency converter.
[0027] When the frequency converter is removed, the first iron plate 15 is no longer pressed by the gravity, and the upward restoring force of the four second springs 18 is greater than the magnetic attraction force between the first iron plate 15 and the first magnet 21. The second spring 18 normally resets the movable column 17 and the first iron plate 15. After the first iron plate 15 is lifted, it is out of position with the first magnet 21 and is no longer attracted. At this time, the first spring 10, which stores elastic restoring potential, is no longer affected by the magnetic attraction force between the first iron plate 15 and the first magnet 21. Therefore, under the action of the first spring 10, the movable block 7, the backing plate 14, the first iron plate 15, and the second magnet 43 move backward to the initial state and wait for the next frequency converter to be placed.
[0028] Next, the dust removal structure includes hollow pipes 11 on the top of the workbench 1, a gas pump 12 is installed at the bottom of the workbench 1, the gas pump 12 is connected with the hollow pipes 11 through air pipes, the hollow pipes 11 are uniformly provided with nozzles 13, the dust removal structure further includes guide plates 22 fixed at the air outlets of the nozzles 13, the guide plates 22 are distributed in three groups on both sides and in the middle, the guide plates 22 on both sides are arranged obliquely, and the guide plates 22 on both sides are fixed with guide strips 23 on the surfaces, the guide strips 23 are distributed in three groups on both sides and in the middle, the guide strips 23 on both sides are arranged obliquely, and the guide plates 22 and the guide strips 23 in the middle are arranged vertically, and the inclination directions of the guide plates 22 and the guide strips 23 on both sides are opposite.
[0029] Specifically, the gas pump 12 starts to input gas into the inside of the hollow pipes 11 through the air pipes, and then the gas enters the inside of the nozzles 13 and is sprayed out, the guide plates 22 and the guide strips 23 arranged at the air outlets of the nozzles 13 have the effect of realizing two-stage shunting and guiding of the sprayed gas flow: first, the obliquely arranged guide plates 22 perform the first shunting on the concentrated gas flow sprayed out of the nozzles 13, and preliminarily diffuse the concentrated gas flow into a wider gas flow face; then, the guide strips 23 installed on the surfaces of the guide plates 22 perform the second shunting, further finely divide and guide the gas flow face to different angles, and finally form a three-dimensional gas curtain with a wide coverage range, so that the sprayed gas flow is no longer a fixed gas flow. This design ensures that the blowing operation covers the frequency converter without dead angle, significantly improves the dust removal efficiency, and effectively avoids the local cleaning blind area caused by the concentrated gas flow.
[0030] In addition, the moving and resetting structure is linked with a foreign matter removal assembly, the foreign matter removal assembly includes a circular groove 25 arranged on the top of the push plate 6, a vibration spring 26 is fixed in the inside of the circular groove 25, one end of the vibration spring 26 is in contact with the first iron plate 15, and the vibration spring 26 on the push plate 6 is impacted by the cushion plate 14 and the first iron plate 15 when the cushion plate 14 and the first iron plate 15 are reset by the first spring 10. The vibration force generated by the vibration spring 26 is transmitted to the first iron plate 15, so that the first iron plate 15 generates vibration force and impact force, and the particles adhered to the first iron plate 15 are caused to fall off through the double forces, thereby preventing the particles from affecting the frequency converter.
[0031] Exemplarily, the threaded rod 9 is linked with a heat dissipation structure for detecting the temperature of the plug 29, the heat dissipation structure comprises a hidden air slot 35 on the workbench 1, a worm gear 36 is rotatably connected in the air slot 35, a worm 37 is fixed to one end of the threaded rod 9, the worm 37 extends into the air slot 35 and engages with the worm gear 36, and a blade 38 is fixed to the top of the worm gear 36, the threaded rod 9 rotates with the worm 37, the worm 37 rotates with the worm gear 36 and the blade 38, the opening design of the first iron plate 15 can avoid blocking the air circulation, and then the blade 38 rotates to blow the connecting terminal 2 to reduce the temperature.
[0032] Working principle: through the movement and reset structure, pulling the moving plate 42 makes the distance between the fixed plate 39 and the moving plate 42 increase, then the frequency converter to be detected is placed on the top of the first iron plate 15, and then the moving plate 42 is released and reset under the action of the fourth spring 41, when the frequency converter is placed on the top of the first iron plate 15, the start structure is triggered, specifically: because the first iron plate 15 is subjected to the weight of the frequency converter, then the movable column 17 descends in the hollow column 16 and compresses the second spring 18, at this time, the first iron plate 15 descends and presses the first button switch 19, the frequency converter directly presses the second button switch 44 to make the second magnet 43 generate magnetic force (it should be noted that the first magnet 21 does not need to be connected to electricity, the second magnet 43 is an electromagnet, and generates magnetic force when connected to electricity and disappears when disconnected; the difference is that the second button switch 44 will always be connected to electricity as long as it is pressed), the stop block 45 is used to prevent the frequency converter from directly pressing the second button switch 44 and causing damage, and the air pump 12 and the motor 4 are connected to electricity by pressing the first button switch 19, for example, the working time of the air pump 12 and the motor 4 is set to twenty seconds, the air pump 12 works for twenty seconds after the first button switch 19 is pressed and stops, and the first button switch 19 needs to be pressed again for the next work; the working time of the motor 4 is divided into the first ten seconds and the second ten seconds, in which the motor 4 rotates in the first ten seconds and reverses in the second ten seconds to reset the push plate 6, similarly, the motor 4 stops after working for twenty seconds, and the first button switch 19 needs to be pressed again for the next work.
[0033] It should be noted that the above control system can be realized by a programmable logic controller or a time sequence relay circuit, which belongs to the mature prior art in the field of industrial automation control, the system automatically controls the start and stop and direction of the motor 4 and the air pump 12 through the preset time logic (such as the forward and reverse time sequence and the total running time), and provides a single trigger signal by the first button switch 19 to realize the automatic operation of the detection process, since it is prior art, it will not be described in detail here.
[0034] The motor 4 rotates forward for ten seconds, the threaded rod 9 rotates forward, and the push plate 6 moves inside the groove 5. The push plate 6 pushes the movable block 7, the backing plate 14, the first iron plate 15, and the frequency converter moves towards the connecting terminal 2. After ten seconds, the frequency converter is inserted into the connecting terminal 2. After the first iron plate 15 descends, the bottom of the first iron plate 15 contacts the top of the hollow column 16. The first iron plate 15 is in the same horizontal position as the first magnet 21. When the frequency converter is inserted into the connecting terminal 2, the first iron plate 15 contacts the first magnet 21 and is attracted by the magnetic force of the first magnet 21. At this time, the second magnet 43 is in the position of the support frame 3 and is in the same horizontal position as the second iron plate 31. The second magnet 43 generates a magnetic force when it is electrified, which generates a magnetic attraction force on the second iron plate 31. The second iron plate 31 moves in the sliding groove 30 against the resistance of the third spring 32. When the second iron plate 31 moves towards the second magnet 43, the inclined groove 33 on the surface of the second iron plate 31 moves. Since the plug 34 is inside the inclined groove 33, the vertical rod 28 descends in the vertical groove 27 when the inclined groove 33 moves. The detection plug 29 is inserted into the frequency converter for testing.
[0035] After the above movement work is completed, the motor 4 reverses for ten seconds. Then, the push plate 6 moves backward through the reverse rotation of the threaded rod 9 and returns to the initial position to wait for the next movement work. Although the push plate 6 returns to the initial position, the magnetic attraction force between the first iron plate 15 and the first magnet 21 is greater than the elastic restoring force of the first spring 10. Therefore, the backing plate 14, the first iron plate 15, and the frequency converter are in a static state.
[0036] After the detection is completed, the frequency converter is lifted from the top of the first iron plate 15 and removed. When the frequency converter is lifted, the second button switch 44 is popped up, the second magnet 43 is de-energized, the magnetic attraction force disappears, and the second iron plate 31 retreats under the reset of the third spring 32. Then, the detection plug 29 is lifted from the inserted state. At this time, the purpose of lifting the detection plug 29 is to completely remove the frequency converter and prevent the detection plug 29 from blocking the removal of the frequency converter.
[0037] After the frequency converter is removed, the first iron plate 15 is no longer pressed by the gravity, and the upward reset force of the four second springs 18 is greater than the magnetic attraction force between the first iron plate 15 and the first magnet 21. The second spring 18 normally resets to lift the movable column 17 and the first iron plate 15. After the first iron plate 15 is lifted, it is out of position with the first magnet 21 and is no longer attracted. Therefore, at this time, the first spring 10, which stores elastic reset potential energy, is no longer affected by the magnetic attraction force between the first iron plate 15 and the first magnet 21. Therefore, under the reset action of the first spring 10, the movable block 7, the backing plate 14, the first iron plate 15, and the second magnet 43 retreat to the initial state and wait for the next frequency converter to be placed.
[0038] In summary, when moving, only need to put into the frequency converter press a button switch 19 and button switch 44 on the circuit, can make the frequency converter autonomous movement, when the frequency converter is removed, automatically reset, the whole process only need to put into the frequency converter, take out can complete the above operation, realize high intelligent linkage.
[0039] Through the setting of dust removal structure, the air pump 12 starts to input gas to the inside of the hollow pipe 11 through the air pipe, and then the gas enters the inside of the spray head 13 and sprays out. The guide plate 22 and the guide strip 23 arranged at the gas outlet of the spray head 13 realize two-stage shunting and guiding of the sprayed gas flow: first, the guide plate 22 arranged obliquely performs first shunting on the concentrated gas flow sprayed out of the spray head 13, and preliminarily diffuses it into a wider gas flow surface; then, the guide strip 23 installed on the surface of the guide plate 22 performs second shunting, further finely divides and guides the gas flow surface to different angles, and finally forms a three-dimensional gas curtain with wide coverage, so that the sprayed gas flow is no longer a fixed gas flow. This design ensures that the blowing operation covers the frequency converter without dead angle, significantly improves the dust removal efficiency, and effectively avoids the local cleaning blind area caused by concentrated gas flow.
[0040] Through the setting of the impurity removal assembly, when the gasket 14 and the first iron plate 15 are reset with the first spring 10, they impact the vibration spring 26 on the push plate 6. The vibration force generated by the vibration spring 26 is transmitted to the first iron plate 15, so that the first iron plate 15 generates vibration force and impact force. Through the double force, the particulate impurities adhering to the first iron plate 15 are removed, thereby preventing the particulate impurities from affecting the frequency converter.
[0041] Through the setting of the heat dissipation structure, the threaded rod 9 rotates while rotating the worm 37, and the worm 37 rotates while rotating the worm wheel 36 and the blade 38. The opening design of the first iron plate 15 can avoid hindering air circulation, and then the blade 38 rotates to blow air on the connection terminal 2 to cool and dissipate heat.
[0042] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A workbench structure for testing frequency converters, comprising: The workbench (1), connecting terminal (2), support frame (3), and detection plug (29) are characterized in that: the top of the workbench (1) is provided with a moving and resetting structure and a dust removal structure, the moving and resetting structure includes a motor (4) installed on the side wall of the workbench (1), the top of the workbench (1) is provided with a groove (5), the inside of the groove (5) is slidably connected with a push plate (6) and a movable block (7), the movable block (7) is provided with a through groove (8), the inside of the groove (5) is rotatably connected with a threaded rod (9), the threaded rod (9) passes through the through groove (8) and the push plate (6) and is rotatably connected to the push plate (6). A first spring (10) is sleeved on the outside of the threaded rod (9). One end of the first spring (10) is fixed to one end of the groove (5), and the other end of the first spring (10) is connected to the movable block (7). A pad (14) is fixed on the top of the movable block (7). A support plate (20) is fixed on the top of the workbench (1) away from the motor (4). A magnet (21) is fixed on the bottom of the support plate (20). The connecting terminal (2) is installed on the support plate (20) and located above the magnet (21). A first iron plate (15) is installed on the top of the pad (14) through the starting structure.
2. The workbench structure for testing frequency converters according to claim 1, characterized in that, The moving and resetting structure also includes a vertical groove (27) provided on the support frame (3), a vertical rod (28) slidably connected to the support frame (3) along the vertical groove (27), the detection plug (29) fixed to the bottom of the vertical rod (28), a sliding groove (30) provided at the bottom of the top of the support frame (3), a second iron plate (31) slidably connected to the support frame (3) along the sliding groove (30), a second magnet (43) fixed to the first iron plate (15), and a magnet (43) installed on the top of the first iron plate (15). The device is equipped with a second push button switch (44) and a stop block (45). The second push button switch (44) is electrically connected to a second magnet (43). The second magnet (43) is engaged with a second iron plate (31). A third spring (32) is installed inside the slide groove (30) and connected to the second iron plate (31). The surface of the second iron plate (31) is provided with a sloping groove (33). The vertical rod (28) is fixed with an insert block (34), and the rear end of the insert block (34) is located inside the sloping groove (33).
3. The workbench structure for testing frequency converters according to claim 1, characterized in that, The dust removal structure includes a hollow tube (11) at the top of the workbench (1), an air pump (12) is installed at the bottom of the workbench (1), the air pump (12) is connected to the hollow tube (11) through an air pipe, and nozzles (13) are evenly installed on the hollow tube (11).
4. A workbench structure for testing frequency converters according to claim 3, characterized in that, The dust removal structure also includes a guide plate (22) fixed at the air outlet of the nozzle (13). There are three sets of guide plates (22) distributed on both sides and in the middle. The guide plates (22) on both sides are inclined. Guide strips (23) are fixed on the surface of the guide plates (22) on both sides. There are three sets of guide strips (23) distributed on both sides and in the middle. The guide strips (23) on both sides are inclined.
5. A workbench structure for testing frequency converters according to claim 1, characterized in that, The starting structure includes a hollow column (16) fixed to the top of the pad (14), a movable column (17) slidably connected inside the hollow column (16), the interior of the hollow column (16) being connected to the bottom of the movable column (17) by a second spring (18), the first iron plate (15) being connected to the movable column (17), and the first iron plate (15) cooperating with the first magnet (21).
6. A workbench structure for testing frequency converters according to claim 5, characterized in that, A push-button switch (19) is installed on the top of the pad (14), and the push-button switch (19) is electrically connected to the motor (4) and the air pump (12).
7. A workbench structure for testing frequency converters according to claim 1, characterized in that, The moving and resetting structure is linked to a cleaning component, which includes a circular groove (25) on the top of the push plate (6). A vibration spring (26) is fixed inside the circular groove (25), and one end of the vibration spring (26) is in contact with the first iron plate (15).
8. A workbench structure for testing frequency converters according to claim 1, characterized in that, The threaded rod (9) is linked to a heat dissipation structure for cooling the test plug (29). The heat dissipation structure includes a recessed slot (35) on the workbench (1). A worm gear (36) is rotatably connected inside the slot (35). A worm (37) is fixed at one end of the threaded rod (9). The worm (37) extends into the slot (35) and meshes with the worm gear (36). A blade (38) is fixed at the top of the worm gear (36).
9. A workbench structure for testing frequency converters according to claim 1, characterized in that, The top of the No. 1 iron plate (15) is fixed with a fixed plate (39), and the No. 1 iron plate (15) is provided with a slot (40) at a position away from the fixed plate (39).
10. A workbench structure for detecting frequency converters according to claim 9, characterized in that, The slot (40) is equipped with a No. 4 spring (41) and is slidably connected to a moving plate (42).