An auxiliary testing device for a motor protector

Abstract

This invention provides an auxiliary testing device for motor protectors, relating to the field of protector testing technology. The auxiliary testing device for motor protectors includes a bottom support housing and a workbench, the workbench being fixed to the bottom support housing. It also includes a separation component, a pneumatic conveying component, a tilting component, and a conveying and testing component. The separation component includes a mixing box, an auxiliary frame, a horizontal plate, and a vertical plate. The lower end of the mixing box has a retractable structure, and the lower end of the mixing box is fixedly inserted through the workbench and embedded inside the bottom support housing. The bottom end of the mixing box has a downward-through rectangular groove. Two horizontal and two vertical plates are provided, with the vertical plate positioned above the horizontal plate and perpendicular to it. This auxiliary testing device for motor protectors, by incorporating the separation component, allows stacked and mixed protectors to be gradually separated. Compared to manual separation, this separation method avoids the risk of injury to the fingers of maintenance personnel.

Description

Technical Field

[0001] This invention relates to the field of protector testing technology, specifically to an auxiliary testing device for motor protectors. Background Technology

[0002] Motor protectors are primarily used to provide comprehensive protection for motors. When a motor experiences problems such as overcurrent, underload, phase loss, locked rotor, short circuit, overvoltage, undervoltage, leakage, three-phase imbalance, overheating, or grounding, the protector will alarm or provide control protection. Protectors undergo testing during manufacturing, typically using a testing instrument. After testing, protectors are categorized as qualified or unqualified and placed in different storage boxes based on the test results, ensuring separation of qualified and unqualified protectors. However, during actual storage, operator fatigue or errors can easily lead to the mistaken placement of qualified protectors into unqualified product boxes or vice versa, resulting in qualified protectors being mixed with unqualified ones.

[0003] Moreover, after the motor protectors are assembled on the production line, the finished products are directly stacked in the material box. The personnel involved in auxiliary testing need to take out the protectors one by one and place them on the testing equipment for testing. However, some motor protectors have pins on them. When the testing personnel take them out, they can easily prick their fingers on the pins on the protectors, which greatly reduces the testing efficiency.

[0004] Application No. 202310629415.4 discloses an auxiliary testing device for a motor protector, relating to the technical field of protector testing. It includes a testing platform with two storage channels; a tester; and a storage assembly comprising a storage section and a control section. The storage section includes a dust cover, an electric push rod, and a controller. Two dust covers are provided, each corresponding to one of the storage channels. Each dust cover is positioned over a storage channel and hinged to the testing platform on one side. The electric push rod is hinged to the testing platform, with its movable end hinged to the side of one of the dust covers away from its hinge point. The controller is fixedly connected to the testing platform and electrically connected to both the tester and the electric push rod. The tester outputs test data to the controller, which controls the extension and retraction of the electric push rod based on the test data. The control section is positioned between the two dust covers and simultaneously drives the other dust cover to open while one dust cover is closed. This application effectively prevents the protector from being misplaced in its storage box after testing.

[0005] In this scheme, each motor protector is a separate transmitter. However, in actual production workshops, the protectors are stacked together. Due to their irregular shape, they are not easy to separate when mixed together. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an auxiliary testing device for motor protectors, which solves the problems mentioned in the background section.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: an auxiliary testing device for a motor protector, comprising a bottom support box and a worktable, the worktable being fixed on the bottom support box, and further comprising a separation component, a pneumatic conveying component, a tilting component, and a conveying and testing component;

[0008] The separation assembly includes a mixing box, auxiliary frames, horizontal plates, and vertical plates. The lower end of the mixing box has a retractable structure. The lower end of the mixing box is fixed through the workbench and embedded inside the bottom support box. The bottom end of the mixing box has a downward-through rectangular groove. There are two horizontal plates and two vertical plates. The vertical plates are above the horizontal plates and perpendicular to the vertical plates. The two horizontal plates and the vertical plates form a rectangle and fit against the bottom of the mixing box. A set of electric push rods A is fixedly installed at the bottom of the mixing box corresponding to the horizontal plates and the vertical plates. The electric push rods A are used to push the horizontal plates and the vertical plates to move relative to each other and can change the size of the rectangular area between the horizontal plates and the vertical plates. Multiple parallel elastic paddles are fixedly installed on the upper surface of the two vertical plates. The upper end of the elastic paddles is above the inner bottom wall of the mixing box. There are two auxiliary frames, which are fixed at the front and rear positions of the inner bottom wall of the mixing box and are at the same height as the highest end of the elastic paddles. The end of the auxiliary frame near the rectangular groove has a downward sloping structure, and a roller is rotatably installed above the end of the auxiliary frame away from the rectangular groove.

[0009] The pneumatic conveying assembly is fixed below the mixing box and corresponds to the rectangle between the horizontal and vertical plates. The other end of the pneumatic conveying assembly extends upward to the top of the worktable. The tilting assembly is fixed above the worktable and corresponds to the position of the pneumatic conveying assembly. The conveying detection assembly is installed on the worktable and corresponds to the side of the tilting assembly away from the pneumatic conveying assembly.

[0010] Preferably, the upper end of the mixing box is equipped with a dust cover, the upper end of the mixing box is a hollow vertical structure, the lower end of the mixing box is a four-sided pyramidal structure that contracts downwards, and the rectangular groove is located at the center of the inner bottom wall of the four-sided pyramidal structure at the bottom of the mixing box.

[0011] Preferably, the elastic paddle has an L-shaped structure, with ratchet teeth on the upper surface of one end extending inside the mixing chamber, and the elastic paddle can change its angle relative to the longitudinal plate when pressed.

[0012] Preferably, the pneumatic conveying assembly includes a feeder, a rectangular conveying bend, and a fixed box. The feeder has a trumpet-shaped structure, with its upper end corresponding to the bottom surface of the horizontal plate. The feeder is fixed to the bottom of the mixing box by multiple tie rods. The rectangular conveying bend has a hollow structure. One end of the rectangular conveying bend is fixed to the end of the feeder away from the mixing box. The other end of the rectangular conveying bend extends longitudinally through the workbench and then bends into a horizontal shape. The rectangular conveying bend is connected to the interior of the feeder.

[0013] It also includes nozzles, with multiple nozzles fixedly penetrating the side wall of the feeder. The nozzles are inclined, with one end inside the feeder facing downwards, and the ends of the multiple nozzles inside the feeder facing the central axis of the feeder.

[0014] The fixed box is fixedly installed on the upper surface of the workbench and provides fixed support for the rectangular conveyor bend.

[0015] Preferably, the flipping assembly includes a frame, fixed to the side of the fixed box away from the rectangular conveying bend and aligned with the fixed box; a rotating ring, which is inserted into and rotatably connected to the frame, and a servo motor is installed inside the frame to drive the frame to rotate; and two sets of electric actuators B, both of which are fixedly inserted through the rotating ring. The two sets of electric actuators B are positioned opposite each other on the rotating ring, and their output ends are both located in the inner circle of the rotating ring. Each set of electric actuators B has multiple actuators evenly distributed, and each output end of the electric actuator B is fixedly fitted with a rubber ball head.

[0016] The center of the rectangular conveying bend corresponds to the axis of the rotating ring.

[0017] Preferably, the conveying and detection assembly includes an electric push rod C and a receiving device. There are two electric push rods C, and their fixed ends are fixed to the frame. The receiving device is located between the two electric push rods C, and the output ends of the two electric push rods C are fixed to the receiving device.

[0018] Preferably, the receiving device has a U-shaped structure, with one end of the receiving device corresponding to the center position of the rotating ring, and the electric push rod C is used to control the reciprocating movement of the receiving device relative to the rotating ring.

[0019] Preferably, it also includes a collection tube and a grid drawer. The grid drawer is installed at the bottom of the bottom support box and is slidably connected to the bottom support box. There are multiple collection tubes, the upper end of which passes through the workbench and the lower end of the collection tube corresponds to different areas of the grid drawer. An air pipe is installed on the nozzle, and the other end of the air pipe is fixed to the inner wall of the collection tube for separating the high-pressure gas in the nozzle into the collection tube.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The auxiliary detection device of this motor protector, by setting a separation component, allows the mixed motor protectors to be directly put into the mixing box. Under the action of the electric push rod A, the rectangular area formed by the horizontal and vertical plates changes, and the elastic lever moves accordingly. When the elastic lever moves, it can move the motor protector. When the rectangular area increases, the protector can fall off. Thus, the protectors stacked together can be gradually separated. Compared with manual separation, this separation method will not cause damage to the fingers of maintenance personnel.

[0022] 2. The auxiliary detection device for the motor protector, by setting up a pneumatic conveying assembly, allows the structure of the feeder to drop the protectors one by one. Then, as the rectangular conveying bend moves forward, the nozzle is connected to an air compressor and sprays air into the feeder. The high-pressure gas can push the protectors that are falling one by one to the end of the rectangular conveying bend, thereby separating and conveying the stacked and mixed protectors one by one.

[0023] 3. The auxiliary detection device for the motor protector, by setting up a flipping component and a conveying detection component, allows the protector, which is conveyed to the end of the rectangular conveying bend, to be blown between the rotating rings. Then, the two sets of electric push rods B on the rotating rings will simultaneously clamp the protector. The direction of the protector can be detected by the vision imaging mechanism. Then, the rotating ring is driven by the servo motor to rotate and change direction. Then it is transferred by the conveying detection component. This ensures that the protector picked up by the inspector is always in the same direction, and there will be no problem of it being sharp.

[0024] 4. The auxiliary testing device for the motor protector is equipped with a collection tube and a grid drawer. After testing, the protectors are put into different collection tubes according to whether they are qualified or defective. Because high-pressure air is released in the collection tube, the protectors will not fall down quickly to avoid damage. The protectors that fall into the grid drawer will be classified and collected. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a cross-sectional view of the structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the separation component and pneumatic conveying component of the present invention;

[0028] Figure 4 This is a structural diagram of the pneumatic conveying assembly of the present invention;

[0029] Figure 5 This is a structural exploded view of the flipping component of the present invention;

[0030] Figure 6 For the present invention Figure 5A magnified view of a local area in the image;

[0031] Figure 7 This is a structural diagram of the separation component of the present invention;

[0032] Figure 8 This is a diagram showing the internal structure of the separation component of the present invention;

[0033] Figure 9 This is a cross-sectional view of the structure of the separation component of the present invention;

[0034] Figure 10 This is a structural diagram of the pneumatic conveying assembly of the present invention.

[0035] In the diagram: 1. Bottom support box; 2. Workbench; 3. Separation assembly; 301. Mixing box; 302. Auxiliary frame; 303. Horizontal plate; 304. Vertical plate; 305. Rectangular trough; 306. Electric actuator A; 307. Elastic lever; 308. Roller; 309. Dust cover; 4. Pneumatic conveying assembly; 401. Feeder; 402. Rectangular conveying bend; 403. Fixed box; 404. Pull rod; 405. Nozzle; 5. Tilting assembly; 501. Frame; 502. Rotary ring; 503. Servo motor; 504. Electric actuator B; 505. Rubber ball head; 6. Conveying detection assembly; 601. Electric actuator C; 602. Receiver; 7. Collection pipe; 8. Drawer with compartments; 9. Air pipe. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0037] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0040] like Figure 1-10 As shown, an auxiliary testing device for a motor protector includes a bottom support box 1 and a workbench 2, with the workbench 2 fixed on the bottom support box 1. It also includes a separation component 3, a pneumatic conveying component 4, a tilting component 5, and a conveying and testing component 6.

[0041] The separation assembly 3 includes a mixing box 301, an auxiliary frame 302, a horizontal plate 303, and a vertical plate 304. The lower end of the mixing box 301 has a retractable structure. The lower end of the mixing box 301 is fixedly inserted through the workbench 2 and embedded inside the bottom support box 1. The bottom end of the mixing box 301 is provided with a downward-through rectangular groove 305. There are two horizontal plates 303 and two vertical plates 304. The vertical plate 304 is above the horizontal plate 303 and perpendicular to the horizontal plate 304. The two horizontal plates 303 and the vertical plate 304 form a rectangle and fit against the bottom of the mixing box 301. A set of electric actuators A306 are fixedly installed at the bottom of the mixing box 301 corresponding to the horizontal plate 303 and the vertical plate 304. The electric actuator A306 is used to push the horizontal plate 303 and the vertical plate 304 to move relative to each other and can change the size of the rectangular area between the horizontal plate 303 and the vertical plate 304. Multiple elastic paddles 307 are fixedly installed on the upper surface of the two vertical plates 304. The upper end of the elastic paddle 307 is above the inner bottom wall of the mixing box 301. Two auxiliary frames 302 are provided, which are fixed at the front and rear positions of the inner bottom wall of the mixing box 301 respectively, and are at the same height as the highest end of the elastic paddle 307. The end of the auxiliary frame 302 near the rectangular groove 305 has a downward sloping structure, and a roller 308 is rotatably installed above the end of the auxiliary frame 302 away from the rectangular groove 305.

[0042] The pneumatic conveying assembly 4 is fixed below the mixing box 301 and corresponds to the rectangle between the horizontal plate 303 and the vertical plate 304. The other end of the pneumatic conveying assembly 4 extends upward to the top of the workbench 2. The flipping assembly 5 is fixed above the workbench 2 and corresponds to the position of the pneumatic conveying assembly 4. The conveying detection assembly 6 is installed on the workbench 2 and corresponds to the side of the flipping assembly 5 away from the pneumatic conveying assembly 4.

[0043] The mixing box 301 has a certain volume, which can be used to put a large number of mixed protectors into the workshop. The horizontal plate 303 and the vertical plate 304 operate dynamically when adjusting the protectors. The rectangle formed by their combination will increase or decrease as the protectors fall. The control circuit controls the electric push rod A306 to operate actively. Under the action of the vertical plate 304, the elastic lever 307 will move accordingly. The force of the elastic lever 307 will be transmitted to the motor protector, thereby actuating the motor protector.

[0044] The upper end of the mixing box 301 is equipped with a dust cover 309. The upper end of the mixing box 301 is a hollow vertical structure, and the lower end of the mixing box 301 is a four-sided pyramidal structure that contracts downwards. The rectangular groove 305 is located in the center of the inner bottom wall of the four-sided pyramidal structure at the bottom of the mixing box 301.

[0045] The retractable mixing chamber 301 allows the protector to gradually fall with gravity, and the dust cover 309 prevents dust from the workshop from falling into the mixing chamber 301.

[0046] The elastic lever 307 has an L-shaped structure, and its upper surface at one end extending inside the mixing box 301 is provided with ratchet teeth. When the elastic lever 307 is pressed, it can change its angle relative to the longitudinal plate 304.

[0047] The elastic paddle 307 is made of alloy material and will elastically deform when compressed. When the elastic paddle 307 moves, the angle of the pressure exerted by the protector will also change. The ratchet can push the protector, thereby changing the position of the protector.

[0048] The pneumatic conveying assembly 4 includes a feeder 401, a rectangular conveying bend 402, and a fixed box 403. The feeder 401 has a trumpet-shaped structure, with its upper end corresponding to the bottom surface of the horizontal plate 303. The feeder 401 is fixed to the bottom of the mixing box 301 by multiple tie rods 404. The rectangular conveying bend 402 has a hollow structure. One end of the rectangular conveying bend 402 is fixed to the end of the feeder 401 away from the mixing box 301. The other end of the rectangular conveying bend 402 passes through the workbench 2 longitudinally and then bends into a horizontal shape. The rectangular conveying bend 402 is connected to the interior of the feeder 401.

[0049] It also includes a nozzle 405, and multiple nozzles 405 are provided. The nozzles 405 are fixedly inserted through the side wall of the feeder 401. The nozzles 405 are inclined and one end of the nozzle 405 inside the feeder 401 is set downward. The ends of the multiple nozzles 405 inside the feeder 401 are directed towards the central axis of the feeder 401.

[0050] The fixed box 403 is fixedly installed on the upper surface of the workbench 2 and also provides fixed support for the rectangular conveying bend 402.

[0051] When in use, the nozzle 405 is connected to an air compressor or a high-pressure air pump. It can be connected to the pneumatic equipment in the workshop, or the air compressor can be directly installed inside the bottom support box 1. The protectors that fall into the rectangular conveying bend 402 will move forward under the push of the gas until the protectors are separated and pushed one by one.

[0052] The flipping assembly 5 includes a frame 501, which is fixed to the side of the fixed box 403 away from the rectangular conveying bend 402 and is aligned with the fixed box 403; a rotating ring 502, which is inserted into and rotatably connected to the frame 501, and a servo motor 503 is installed inside the frame 501 to drive the frame 501 to rotate; and two sets of electric actuators B504, which are fixedly inserted through the rotating ring 502. The two sets of electric actuators B504 are positioned opposite each other on the rotating ring 502, and their output ends are both located in the inner ring of the rotating ring 502. Each set of electric actuators B504 has multiple actuators distributed at equal intervals, and each output end of the electric actuator B504 is fixedly equipped with a rubber ball head 505.

[0053] The center position of the rectangular conveying bend 402 corresponds to the axis of the rotating ring 502.

[0054] The output end of the servo motor 503 is equipped with a gear, and the outer circle of the rotating ring 502 is provided with a corresponding tooth groove. The gear meshes with the tooth groove to drive the rotating ring 502 to rotate. An arc-shaped support sleeve is installed inside the frame 501, and the rotating ring 502 can be inserted into the support sleeve. There are ball bearings between the two to reduce the resistance during rotation. The cable of the electric actuator B504 is lengthened. After the rotating ring 502 rotates a certain angle, it needs to be reversed to prevent the cable from getting tangled.

[0055] The conveying and detection assembly 6 includes an electric push rod C601 and a receiving device 602. There are two electric push rods C601, and their fixed ends are fixed on the frame 501. The receiving device 602 is located between the two electric push rods C601, and the output ends of the two electric push rods C601 are fixed to the receiving device 602.

[0056] The receiver 602 can be a single storage box structure or a conveyor belt can be installed inside it. When the electric actuator C601 retracts, the receiver 602 can be moved into the rotating ring 502.

[0057] The receiving device 602 has a U-shaped structure. One end of the receiving device 602 corresponds to the center position of the rotating ring 502. The electric push rod C601 is used to control the reciprocating movement of the receiving device 602 relative to the rotating ring 502.

[0058] It also includes a collection pipe 7 and a grid drawer 8. The grid drawer 8 is installed at the bottom of the bottom support box 1 and is slidably connected to the bottom support box 1. There are multiple collection pipes 7, the upper end of which passes through the workbench 2. The lower end of the collection pipe 7 corresponds to different areas of the grid drawer 8. An air pipe 9 is installed on the nozzle 405. The other end of the air pipe 9 is fixed to the inner wall of the collection pipe 7, which is used to separate the high-pressure gas in the nozzle 405 into the collection pipe 7.

[0059] A portion of the high-pressure gas in nozzle 405 will be diverted into air pipe 9. Therefore, when the protector is inserted into air pipe 9, the high-pressure gas will give the protector an upward thrust to prevent it from falling and being damaged.

[0060] When in use, the mixed motor protectors are directly put into the mixing box 301. Under the action of the electric push rod A306, the rectangular area formed by the horizontal plate 303 and the vertical plate 304 changes, and the elastic lever 307 moves accordingly. When the elastic lever 307 moves, it can move the motor protector. The protector will also roll on the auxiliary frame 302 to adjust its direction. When the rectangular area increases, the protector can fall off, so that the protectors stacked together can be gradually separated.

[0061] The structure of the feeder 401 allows the protectors to fall one by one. As the rectangular conveyor bend 402 advances, the nozzle 405 is connected to an air compressor and sprays air into the feeder 401. While the air is being sprayed, the rectangular area above shrinks to prevent the high-pressure gas from rising. The high-pressure gas can push the protectors that fall one by one to the end of the rectangular conveyor bend 402. Since the cross-sectional shape of the rectangular conveyor bend 402 matches the shape of the protector, it can restrict a single protector from passing through the rectangular conveyor bend 402. This allows the stacked and mixed protectors to be separated and conveyed one by one.

[0062] The protector delivered to the end of the rectangular conveying bend 402 is blown between the rotating rings 502. Then, the two sets of electric push rods B504 on the rotating ring 502 will clamp the protector at the same time. The rubber ball head 505 can increase the friction between the protector and the protector. The direction of the protector can be detected by the vision imaging mechanism. Then, the rotating ring 502 is driven by the servo motor 503 to rotate and change direction. Then it is transferred by the conveying detection component 6, so that the protector picked up by the inspection personnel is always in the same direction.

[0063] After testing, the protectors are placed into different collection tubes 7 according to whether they are qualified or defective. Because high-pressure air is released in the collection tubes 7, the protectors will not fall quickly and will be damaged. The protectors that fall into the compartmentalized drawers 8 will be sorted and collected.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0065] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0066] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary testing device for a motor protector, comprising a bottom support housing and a worktable, the worktable being fixed on the bottom support housing, characterized in that: It also includes separation components, pneumatic conveying components, tilting components, and conveying detection components; The separation assembly includes a mixing box, auxiliary frames, horizontal plates, and vertical plates. The lower end of the mixing box has a retractable structure. The lower end of the mixing box is fixed through the workbench and embedded inside the bottom support box. The bottom end of the mixing box has a downward-through rectangular groove. There are two horizontal plates and two vertical plates. The vertical plates are above the horizontal plates and perpendicular to the vertical plates. The two horizontal plates and the vertical plates form a rectangle and fit against the bottom of the mixing box. A set of electric push rods A is fixedly installed at the bottom of the mixing box corresponding to the horizontal plates and the vertical plates. The electric push rods A are used to push the horizontal plates and the vertical plates to move relative to each other and can change the size of the rectangular area between the horizontal plates and the vertical plates. Multiple parallel elastic paddles are fixedly installed on the upper surface of the two vertical plates. The upper end of the elastic paddles is above the inner bottom wall of the mixing box. There are two auxiliary frames, which are fixed at the front and rear positions of the inner bottom wall of the mixing box and are at the same height as the highest end of the elastic paddles. The end of the auxiliary frame near the rectangular groove has a downward sloping structure, and a roller is rotatably installed above the end of the auxiliary frame away from the rectangular groove. The pneumatic conveying assembly is fixed below the mixing box and corresponds to the rectangle between the horizontal and vertical plates. The other end of the pneumatic conveying assembly extends upward to the top of the worktable. The tilting assembly is fixed above the worktable and corresponds to the position of the pneumatic conveying assembly. The conveying detection assembly is installed on the worktable and corresponds to the side of the tilting assembly away from the pneumatic conveying assembly. The elastic lever has an L-shaped structure, and one end of the lever extending into the mixing box has ratchet teeth on its upper surface. When the elastic lever is pressed, it can change its angle relative to the longitudinal plate. The pneumatic conveying assembly includes a feeder, a rectangular conveying bend, and a fixed box. The feeder has a trumpet-shaped structure, with its upper end corresponding to the bottom surface of the horizontal plate. The feeder is fixed to the bottom of the mixing box by multiple tie rods. The rectangular conveying bend has a hollow structure. One end of the rectangular conveying bend is fixed to the end of the feeder away from the mixing box. The other end of the rectangular conveying bend runs longitudinally through the workbench and then bends into a horizontal shape. The rectangular conveying bend is connected to the interior of the feeder. It also includes nozzles, with multiple nozzles fixedly penetrating the side wall of the feeder. The nozzles are inclined, with one end inside the feeder facing downwards, and the ends of the multiple nozzles inside the feeder facing the central axis of the feeder. The fixed box is fixedly installed on the upper surface of the workbench and provides fixed support for the rectangular conveyor bend; The flipping assembly includes a frame, fixed to the side of the fixed box away from the rectangular conveying bend and aligned with the fixed box; a rotating ring, which is inserted into and rotatably connected to the frame, and a servo motor is installed inside the frame to drive the rotating ring to rotate; and two sets of electric actuators B, both of which are fixedly inserted through the rotating ring. The two sets of electric actuators B are positioned opposite each other on the rotating ring, and their output ends are both located in the inner circle of the rotating ring. Each set of electric actuators B has multiple actuators evenly distributed, and each output end of the electric actuator B is fixedly fitted with a rubber ball head. The center of the rectangular conveying bend corresponds to the axis of the rotating ring.

2. The auxiliary detection device for a motor protector according to claim 1, characterized in that: The upper end of the mixing box is equipped with a dust cover. The upper end of the mixing box is a hollow vertical structure, and the lower end of the mixing box is a four-sided pyramidal structure that contracts downwards. The rectangular groove is located in the center of the inner bottom wall of the four-sided pyramidal structure at the bottom of the mixing box.

3. The auxiliary testing device for a motor protector according to claim 2, characterized in that: The conveying and detection assembly includes electric push rods C and a receiving device. There are two electric push rods C, and their fixed ends are fixed to the frame. The receiving device is located between the two electric push rods C, and the output ends of the two electric push rods C are fixed to the receiving device.

4. The auxiliary detection device for a motor protector according to claim 3, characterized in that: The receiving device has a U-shaped structure, with one end of the receiving device corresponding to the center position of the rotating ring. The electric push rod C is used to control the reciprocating movement of the receiving device relative to the rotating ring.

5. The auxiliary testing device for a motor protector according to claim 4, characterized in that: It also includes a collection tube and a grid drawer. The grid drawer is installed at the bottom of the bottom support box and is slidably connected to the bottom support box. There are multiple collection tubes, the upper end of which passes through the workbench and the lower end of the collection tube corresponds to different areas of the grid drawer. An air pipe is installed on the nozzle, and the other end of the air pipe is fixed to the inner wall of the collection tube to separate the high-pressure gas in the nozzle into the collection tube.

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