DD motor double-station stator function detection machine

Abstract

The utility model relates to a DD motor double-station stator function detection machine, which comprises a rack, the rack is provided with a power distribution mechanism and at least one detection station, the detection station comprises a rotor control device, a stator fixing tool, a lifting sliding table mechanism and a safety grating, the detection station operates normally when the safety grating is not shielded, and the detection station operates normally when the safety grating is not shielded. When the safety grating is shielded, the detection station stops operating; by arranging the rotor control mechanism, a load force with a certain variable is applied to the motor rotor during operation, so that the real state of load-bearing operation of the motor in actual application is simulated, the detection of the stator performance is realized, and the detection effect is better and more accurate; and the safety grating is arranged to detect the position of the worker, if the worker is within the detection range, the detection machine stops operating, and if the worker is outside the detection range, the detection machine normally operates, so that the worker is within the safety range when the detection machine works, and the safety of the worker is ensured.

Description

Technical Field

[0001] This utility model relates to the field of motor stator testing technology, and in particular to a dual-station stator function testing machine for DD motors. Background Technology

[0002] DD is short for direct driver. Adding "motor" after it means it is called a DD direct drive motor. Unlike traditional motors, the high torque of this product allows it to be directly connected to the motion device, thus eliminating the need for connecting mechanisms such as reducers, gearboxes, and pulleys. Hence, it is called a direct drive motor. DD motors are widely used in washing machines, robots, CNC machine tools, and other fields.

[0003] Like other industrial products, DD motors also need to undergo factory testing to ensure product quality. Since DD motors are often used in applications requiring high-speed rotation, testing can easily pose a threat to worker safety, especially since existing testing institutions do not provide adequate protection for workers. Therefore, it is essential to have a testing institution that can complete the testing and ensure efficiency while also protecting the personal safety of workers. Utility Model Content

[0004] In view of the current state of the prior art, the technical problem to be solved by this utility model is to provide a DD motor dual-station stator function testing machine with high testing efficiency and better protection of workers' personal safety.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a dual-station stator function testing machine for DD motors, including a frame, a power distribution mechanism and at least one testing station mounted on the frame, the testing station including a rotor control device, a stator fixing fixture, a lifting slide mechanism and a safety light curtain, the lifting slide mechanism being mounted on the frame, the rotor control device being mounted on the lifting slide mechanism, the stator fixing fixture being located directly below the rotor control device and coaxially mounted with the rotor control device, the safety light curtain being mounted on the frame, the power distribution mechanism being electrically connected to the rotor control device, the lifting slide mechanism and the safety light curtain, the testing station operating normally when the safety light curtain is not obstructed, and the testing station suspending operation when the safety light curtain is obstructed.

[0006] Furthermore, the frame includes a metal frame, a sealing plate, a work platform, a protective plate, and casters. The metal frame is a rectangular frame formed by multiple metal beams. The sealing plate is located between some of the metal beams of the metal frame. The work platform is located in the middle of the metal frame, and a mounting column is provided on the outer side of the middle of the work platform. The protective plate is located below the work platform to shield the lifting slide mechanism. There are four casters, which are respectively located at the four corners of the bottom surface of the metal frame. There are two inspection stations, which are symmetrically arranged on the work platform.

[0007] Furthermore, the lifting slide mechanism includes an upper fixed plate, a support shaft, a height limiter, a linear bearing, a lower fixed plate, a cylinder holder, and a push-pull cylinder. The upper end of the support shaft is connected to the upper fixed plate, and the lower end of the support shaft passes through the height limiter, the work platform, and the linear bearing in sequence and is connected to the lower fixed plate. The push-pull cylinder is fixed below the work platform by the cylinder holder, and the power output end of the push-pull cylinder is connected to the lower fixed plate. The height limiter is fixed on the upper surface of the work platform, and the power distribution mechanism is electrically connected to the push-pull cylinder.

[0008] Furthermore, there are three height limiters arranged in a triangle on the upper surface of the work platform, and the number of support shafts and linear bearings is the same as that of the height limiters.

[0009] Furthermore, the rotor control device includes a rotary encoder, a magnetic powder brake, a bearing housing, a rotor, a protective cover, and a synchronization indicator light. The bearing housing is installed below the upper fixed plate, the rotor is installed below the bearing housing, the magnetic powder brake is installed above the upper fixed plate, the rotary encoder is installed above the magnetic powder brake, the protective cover is installed above the upper fixed plate to protect the rotary encoder and the magnetic powder brake, and the synchronization indicator light is installed on the protective cover.

[0010] Furthermore, the rotary encoder is driven by the magnetic powder brake, which controls and detects the rotor's operating status. The magnetic powder brake is driven by the bearing housing, which is driven by the rotor. The power distribution mechanism is electrically connected to the rotary encoder, the magnetic powder brake, and the synchronous signal lamp.

[0011] Furthermore, the stator fixing fixture includes a connecting plate and a three-jaw centering clamping device. The connecting plate is mounted on the working platform and is coaxially arranged with the rotor, and the connecting plate is located directly below the rotor. The three-jaw centering clamping device is located at the center of the connecting plate for fixing the stator to be tested.

[0012] Furthermore, the power distribution mechanism includes a power distribution box, a control panel, and control buttons. The power distribution box is located on the upper part of the metal frame. The control buttons are installed on the metal frame near the work platform and are electrically connected to the power distribution box. The control panel is installed on the power distribution box for monitoring the operation of the stator testing machine. The power distribution box is equipped with the same number of indicator lights as the number of testing stations and the same number of controllers as the number of testing stations.

[0013] Furthermore, the signal lights are synchronized with the synchronous signal lights, and the controller is electrically connected to the magnetic powder brake and controls the load force applied to the rotor when the magnetic powder brake is started.

[0014] Furthermore, the safety light curtains are symmetrically arranged in pairs in front of the corresponding inspection stations. One safety light curtain is installed on the sealing plate on the side of the frame, and the other safety light curtain is installed on the surface of the mounting column facing the sealing plate on the side of the frame.

[0015] Compared with the prior art, the advantages of this utility model are as follows: By setting a rotor control mechanism, a certain variable load force is applied to the motor rotor during operation, thereby simulating the real state of motor operation under load in actual use, realizing the detection of stator performance, and the detection effect is better and more accurate; In addition, by setting a safety light curtain to detect the position of the worker, if the worker is within the detection range, the detection machine stops operating; if the worker is outside the detection range, the detection machine operates normally, ensuring that the worker is within the safe range when the detection machine is working, thereby ensuring the worker's safety, avoiding operational accidents, and providing a certain degree of protection for the worker's personal safety. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a structural diagram of the present invention without a protective plate;

[0020] Figure 3 This is a schematic diagram of the structure from the main view direction of this utility model;

[0021] Figure 4 This is a schematic diagram showing the position of the safety light curtain of this utility model;

[0022] Figure 5 This is a schematic diagram of the stator fixing fixture structure of this utility model;

[0023] As shown in the figure, 1. Frame; 1.1 Metal frame; 1.2 Sealing plate; 1.3 Working platform; 1.3.1 Mounting column; 1.4 Protective plate; 1.5 Casters; 2. Power distribution mechanism; 2.1 Power distribution box; 2.2 Control panel; 2.3 Control buttons; 2.4 Indicator lights; 2.5 Controller; 3. Safety light curtain; 4. Rotor control device; 4.1 Rotary encoder; 4.2 Magnetic powder brake; 4.3 Bearing seat; 4.4 Rotor; 4.5 Protective cover; 4.6 Synchronization indicator light; 5. Stator fixing fixture; 5.1 Connecting plate; 5.2 Three-jaw centering clamping fixture; 6. Lifting slide mechanism; 6.1 Upper fixing plate; 6.2 Support shaft; 6.3 Height limiter; 6.4 Linear bearing; 6.5 Lower fixing plate; 6.6 Cylinder retainer; 6.7 Push-pull cylinder. Detailed Implementation

[0024] The present invention will be further described below with reference to specific embodiments.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not 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 a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] like Figure 1-5 A dual-station stator function testing machine for DD motors includes a frame 1, on which a power distribution mechanism 2 and at least one testing station are mounted. As an embodiment, only the case with two testing stations is described here. Two testing stations will not make the stator testing machine too large, and one power distribution mechanism 2 can be used more to ensure a certain working efficiency.

[0030] Preferably, the testing station includes a rotor control device 4, a stator fixing fixture 5, a lifting slide mechanism 6, and a safety light curtain 3. The lifting slide mechanism 6 is mounted on the frame 1, and the rotor control device 4 is mounted on the lifting slide mechanism 6. The stator fixing fixture 5 is located directly below the rotor control device 4 and is coaxially mounted with the rotor control device 4. The safety light curtain 3 is mounted on the frame 1. The power distribution mechanism 2 is electrically connected to the rotor control device 4, the lifting slide mechanism 6, and the safety light curtain 3. The rotor control device 4 generates a controllable load force during operation, which can apply pressure to the motor rotor 4.4, simulating the real state of motor operation under load in actual use, and helps to determine whether the tested stator is qualified. The safety light curtain 3 operates normally when it is not blocked, and stops operating when it is blocked, preventing workers from coming into contact with the high-speed rotating DD motor, protecting the personal safety of workers, and improving the safety of this stator testing machine.

[0031] Preferably, the frame 1 includes a metal frame 1.1, a sealing plate 1.2, a work platform 1.3, a protective plate 1.4, and casters 1.5. The metal frame 1.1 is a rectangular frame formed by multiple metal beams. The sealing plate 1.2 is located between some of the metal beams of the metal frame 1.1, that is, on the four sides of the metal frame 1.1 other than the front and bottom. The front refers to the side facing the operator. The bottom surface does not have a sealing plate to prevent the accumulation of dust or foreign objects. The work platform 1.3 is located in the middle of the metal frame 1.1 and is used to install the stator fixing device 5 and the lifting slide device 6. The middle of the work platform 1.3 is located on the outer side. Mounting column 1.3.1, the protective plate 1.4 is set below the work platform 1.3 to shield the lifting slide mechanism 6, preventing workers from accidentally coming into contact with the lifting slide device 6 during operation, thus reducing the risk of worker injury. There are four casters 1.5, which are respectively set at the four corners of the bottom surface of the metal frame 1.1. There are two testing stations, which are symmetrically arranged on the work platform 1.3. The casters 1.5 have a braking function, which can easily move the entire stator testing machine when needed, and fix its position by braking when not needed, thus improving the convenience of using this stator testing machine.

[0032] Preferably, the lifting slide mechanism 6 includes an upper fixed plate 6.1, a support shaft 6.2, a height limiter 6.3, a linear bearing 6.4, a lower fixed plate 6.5, a cylinder retainer 6.6, and a push-pull cylinder 6.7. The upper end of the support shaft 6.2 is connected to the upper fixed plate 6.1, which is used to install the rotor control device 4. The lower end of the support shaft 6.2 passes through the height limiter 6.3, the working platform 1.3, and the linear bearing 6.4 in sequence and is connected to the lower fixed plate 6.5. The push-pull cylinder 6.7 is fixed below the working platform 1.3 by the cylinder retainer 6.6, and its power output end is connected to the lower fixed plate 6.5. The height limiter 6.3 is fixed to the lower fixed plate 6.5. On the upper surface of the working platform 1.3, there are three height limiters 6.3 arranged in a triangle on the upper surface of the working platform 1.3. The height limiters 6.3 can limit the minimum height of the upper fixed plate 6.1 when it moves. The power distribution mechanism 2 is electrically connected to the push-pull cylinder 6.7. The number of support shafts 6.2 and linear bearings 6.4 is the same as that of the height limiters 6.3. The linear bearings 6.4 can reduce the friction of the support shafts 6.2 when they move, ensuring that the support shafts 6.2 can slide up and down smoothly and accurately. When the power output end of the push-pull cylinder 6.7 is working, it will move up and down, driving the lower fixed plate 6.5 to move, thereby realizing the lifting and lowering movement of the lifting slide mechanism 6 and improving the functionality of this stator testing machine.

[0033] Preferably, the rotor control device 4 includes a rotary encoder 4.1, a magnetic powder brake 4.2, a bearing housing 4.3, a rotor 4.4, a protective cover 4.5, and a synchronization indicator light 4.6. The bearing housing 4.3 is installed below the upper fixed plate 6.1, the rotor 4.4 is installed below the bearing housing 4.3, the magnetic powder brake 4.2 is installed above the upper fixed plate 6.1, the rotary encoder 4.1 is installed above the magnetic powder brake 4.2, and the protective cover 4.5 is installed above the upper fixed plate 6.1 to protect the rotary encoder 4.1 and the magnetic powder brake 4.2. To prevent foreign objects from entering and affecting the operation of the rotary encoder 4.1 and magnetic powder brake 4.2, the synchronization indicator light 4.6 is mounted on the protective cover 4.5. The rotary encoder 4.1 is driven by the magnetic powder brake 4.2, which controls and detects the operating status of the rotor 4.4. The magnetic powder brake 4.2 is driven by the bearing housing 4.3, which is driven by the rotor 4.4. The magnetic powder brake 4.2 applies a certain variable load force to the rotor 4.4 to detect whether the performance of the stator being tested is qualified, effectively improving the functionality of this stator testing machine.

[0034] Preferably, the stator fixing fixture 5 includes a connecting plate 5.1 and a three-jaw centering clamping fixture 5.2. The connecting plate 5.1 is mounted on the working platform 1.3 and is coaxially arranged with the rotor 4.4, and the connecting plate 5.1 is located directly below the rotor 4.4. The three-jaw centering clamping fixture 5.2 is located at the center of the connecting plate 5.1 and is used to fix the stator to be tested.

[0035] Preferably, the power distribution mechanism 2 includes a power distribution box 2.1, a control panel 2.2, and control buttons 2.3. The power distribution box 2.1 is located on the upper part of the metal frame 1.1. The control buttons 2.3 are installed on the metal frame 1.1 near the work platform 1.3 and are electrically connected to the power distribution box 2.1. The control panel 2.2 is installed on the power distribution box 2.1 for monitoring the operation of the stator testing machine. The power distribution box 2.1 is equipped with the same number of indicator lights 2.4 as the testing station 3 and the same number of controllers 2.5. Workers control the machine via the control panel 2.2. The stator testing machine allows for human-machine interaction, obtaining equipment operating information from the control panel 2.2. The control button 2.3 controls the on / off and reset of the stator testing machine. The indicator light 2.4 is synchronized with the synchronization indicator light 4.6, lighting up green when the test is qualified, yellow when testing is in progress, and red when the test is unqualified. The controller 2.5 is electrically connected to the magnetic powder brake 4.2 and controls the load force applied to the rotor 4.4 when the magnetic powder brake 4.2 is activated. This power distribution mechanism 2 can improve the automation level of the stator testing machine.

[0036] Preferably, the safety light curtains 3 are symmetrically arranged in pairs in front of corresponding inspection stations. One safety light curtain 3 is installed on the sealing plate 1.2 on the side of the frame 1, and the other safety light curtain 3 is installed on the mounting column 1.3.1 facing the sealing plate 1.2 on the side of the frame 1. If a worker approaches the work platform 1.3 while the equipment is running, the stator inspection machine will stop operating and will require the worker to manually reset it using the control button 2.3 before it can resume normal operation, thus protecting the worker's personal safety.

[0037] During operation, the worker first needs to install the stator to be tested on the three-jaw centering clamp 5.2. Then, the worker leaves the detection range of the safety light curtain 3 and presses the start button on the control button 2.3. The stator testing machine will automatically control the lifting slide mechanism 6 to descend, bringing the rotor control device 4 closer to the stator and automatically completing the test. During the test, the rotor 4.4 engages with the stator, and the magnetic powder brake 4.2 applies a certain load force to the rotor. The rotary encoder 4.1 monitors the rotational speed of the rotor 4.4 during this process and displays the monitoring results on the control panel 2.2. After the test is completed, the synchronization indicator light 4.6 lights up red or green, and the worker can classify and place the stator according to the light color. If the worker gets too close to the work platform 1.3 during the test, it will be detected by the safety light curtain 3, and the corresponding testing station will stop operating. The worker needs to press the reset button on the control button 2.3 to restart the test, thus preventing accidents caused by workers getting too close to the working DD motor and protecting the worker's personal safety.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A DD motor double-station stator function detection machine, characterized in that, The utility model provides a kind of detection device for motor rotor, including rack (1), and the rack (1) is equipped with distribution mechanism (2) and at least one detection station, the detection station includes rotor control device (4), stator fixed tooling (5), lifting sliding table mechanism (6) and safety grating (3), the lifting sliding table mechanism (6) is arranged on rack (1), the rotor control device (4) is arranged on lifting sliding table mechanism (6), the stator fixed tooling (5) is located just below rotor control device (4), and the stator fixed tooling (5) is coaxially arranged with rotor control device (4), the safety grating (3) is located on rack (1), and the distribution mechanism (2) is electrically connected with rotor control device (4), lifting sliding table mechanism (6) and safety grating (3), the detection station normally operates when the safety grating (3) is not blocked, and the detection station suspends operation when the safety grating (3) is blocked.

2. A DD motor double-station stator function detection machine according to claim 1, characterized in that, The rack (1) includes a metal frame (1.1), a cover plate (1.2), a work platform (1.3), a protective plate (1.4), and universal wheels (1.5). The metal frame (1.1) is a cuboid-shaped frame formed by multiple metal beams. The cover plate (1.2) is located between some of the metal beams of the metal frame (1.1). The work platform (1.3) is arranged in the middle of the metal frame (1.1), and a mounting column (1.3.1) is arranged on the outer side of the middle of the work platform (1.3). The protective plate (1.4) is arranged below the work platform (1.3) to block the lifting sliding table mechanism (6). The four universal wheels (1.5) are arranged at the four corners of the bottom surface of the metal frame (1.1). The detection station is symmetrical and arranged on the work platform (1.3).

3. A DD motor double-station stator function detection machine according to claim 2, characterized in that, The lifting sliding table mechanism (6) includes an upper fixed plate (6.1), a support shaft (6.2), a height limiter (6.3), a linear bearing (6.4), a lower fixed plate (6.5), a cylinder fixer (6.6), and a push-pull cylinder (6.7). The upper end of the support shaft (6.2) is connected to the upper fixed plate (6.1). The lower end of the support shaft (6.2) passes through the height limiter (6.3), the work platform (1.3), and the linear bearing (6.4) in sequence and is connected to the lower fixed plate (6.5). The push-pull cylinder (6.7) is fixed below the work platform (1.3) by the cylinder fixer (6.6). The power output end of the push-pull cylinder (6.7) is connected to the lower fixed plate (6.5). The height limiter (6.3) is fixed to the upper surface of the work platform (1.3). The distribution mechanism (2) is electrically connected to the push-pull cylinder (6.7).

4. A DD motor double-station stator function detection machine according to claim 3, characterized in that, The height limiter (6.3) is triangular and arranged on the upper surface of the work platform (1.3). The number of support shafts (6.2) and linear bearings (6.4) is the same as the number of height limiters (6.3).

5. A DD motor double-station stator function detection machine according to claim 3, characterized in that, The rotor control device (4) comprises a rotary encoder (4.1), a magnetic powder brake (4.2), a bearing seat (4.3), a rotor (4.4), a protective cover (4.5) and a synchronization signal lamp (4.6), the bearing seat (4.3) is installed below the upper fixed plate (6.1), the rotor (4.4) is installed below the bearing seat (4.3), the magnetic powder brake (4.2) is installed above the upper fixed plate (6.1), the rotary encoder (4.1) is installed above the magnetic powder brake (4.2), the protective cover (4.5) is installed above the upper fixed plate (6.1) to protect the rotary encoder (4.1) and the magnetic powder brake (4.2), and the synchronization signal lamp (4.6) is installed on the protective cover (4.5).

6. A DD motor double-station stator function detection machine according to claim 5, characterized in that, The rotary encoder (4.1) is in driving connection with the magnetic powder brake (4.2), the rotary encoder (4.1) controls and detects the running state of the rotor (4.4), the magnetic powder brake (4.2) is in driving connection with the bearing seat (4.3), the bearing seat (4.3) is in driving connection with the rotor (4.4), and the power distribution mechanism (2) is in electrical connection with the rotary encoder (4.1), the magnetic powder brake (4.2) and the synchronization signal lamp (4.6).

7. A DD motor double-station stator function detection machine according to claim 5, characterized in that, The stator fixing tool (5) comprises a connecting disc (5.1) and a three-jaw centering clamping fixer (5.2), the connecting disc (5.1) is installed on the working platform (1.3), the connecting disc (5.1) is coaxially arranged with the rotor (4.4) and located directly below the rotor (4.4), and the three-jaw centering clamping fixer (5.2) is arranged at the center of the connecting disc (5.1) for fixing the stator to be detected.

8. A DD motor double-station stator function detection machine according to claim 5, characterized in that, The power distribution mechanism (2) comprises a power distribution box (2.1), a control panel (2.2) and a control button (2.3), the power distribution box (2.1) is arranged on the upper part of the metal frame (1.1), the control button (2.3) is installed on the metal frame (1.1) near the working platform (1.3) and is in electrical connection with the power distribution box (2.1), the control panel (2.2) is installed on the power distribution box (2.1) for monitoring the operation of the stator detection machine, and the power distribution box (2.1) is provided with signal lamps (2.4) and controllers (2.5) which are the same in number as the detection stations.

9. A DD motor double-station stator function detection machine according to claim 8, characterized in that, The signal lamps (2.4) are in light synchronization with the synchronization signal lamp (4.6), and the controllers (2.5) are in electrical connection with the magnetic powder brake (4.2) and control the magnetic powder brake (4.2) to exert a load force on the rotor (4.4) when the magnetic powder brake (4.2) is started.

10. A DD motor double-station stator function detection machine according to claim 2, characterized in that, The two safety grating (3) are symmetrically arranged in front of the corresponding detection stations, one of which is installed on the side sealing plate (1.2) of the rack (1), and the other is installed on the surface of the mounting column (1.3.1) facing the side sealing plate (1.2) of the rack (1).

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