Method for monitoring dynamic torque of an electric machine during operation of the electric machine and electric machine

Abstract

The present invention provides a method for monitoring the dynamic torque of a motor during motor operation and the motor, including: a rotor, a stator, a shaft, a sensor, a stator anti-rotation device, and a control device; and the end of the shaft is fixedly connected to the rotor center hole of the rotor, the shaft passes through the inner hole of the bearing in the stator center hole, and the shaft and the rotor can rotate; the stator anti-rotation device is fixedly connected to the stator and is located on the end face far from the rotor, and the stator anti-rotation device is fixed to the outer circumference of the bearing; the control device is fixedly connected to an external mechanism, and the control device can prevent the stator anti-rotation device from rotating, so that the stator anti-rotation device and the stator cannot rotate; the sensor is arranged between the control device and the stator anti-rotation device, the sensor is connected to a display and a controller, when the monitored torque value during motor operation is greater than a preset torque value, the display and the controller give an alarm and control the motor to stop working, which can protect the safe operation of the motor and the driven equipment from being damaged.

Description

Technical Field

[0001] The present invention relates to an electric motor with real-time monitoring of the dynamic torque of the electric motor during the operation of the motor and a corresponding method for monitoring the dynamic torque during the operation of the motor. Background Art

[0002] The output value of the motor torque is a typical parameter characterizing the performance and working state of the torque motor drive, and its monitoring has important significance. However, the existing methods for monitoring the output torque of the torque motor are only applicable to monitoring static torque. Even if dynamic torque can be measured, due to the inability to accurately monitor angular acceleration and frictional torque, there are defects in inaccurate monitoring.

[0003] According to the monitoring method of the sensor, it is generally divided into two types: contact type and non-contact type. The contact type sensor is mainly a strain gauge type torque sensor, and the non-contact type is mainly divided into two categories: magnetoelectric type and optoelectronic type. The strain type torque sensor monitors torque by monitoring the deformation of the elastic element through the strain gauge. This monitoring method is greatly affected by the material and shape of the elastic shaft. In principle, it is difficult to further improve the resolution, and this testing method and device are only applicable to the case of static force to analyze and monitor the static torque received by the material. For the case of using a non-contact sensor to monitor torque, the magnetoelectric sensor is affected by the ambient temperature and external magnetic field, and the sensitivity will change and cause monitoring errors. For micro torque, the error is usually large or even unable to monitor. In the above two methods, due to the inability to accurately monitor angular acceleration and frictional torque, there are defects in inaccurate dynamic torque monitoring. The existing technology cannot accurately monitor the real-time dynamic torque output by the torque motor, so it is necessary to adopt a new principle to realize the real-time monitoring of the dynamic torque during the operation of the motor. Summary of the Invention

[0004] In view of the above technical problem that the existing technology cannot accurately monitor the real-time dynamic torque output by the torque motor, a method for monitoring the dynamic torque of the motor during the operation of the motor and the motor are provided. The present invention mainly uses an anti-rotation device, a control device and a sensor provided on the stator of the motor, so as to realize the real-time monitoring of the dynamic torque of the motor during the operation of the motor by using the sensor, the display and the controller, and a corresponding method for real-time monitoring of the dynamic torque under the corresponding motor working state.

[0005] The technical means adopted by the present invention are as follows:

[0006] A method for monitoring the dynamic torque of a motor during motor operation and the motor thereof, comprising: a rotor, a stator, a shaft, a sensor, a stator anti-rotation device and a control device; the shaft is coaxially arranged with the rotor and the stator, and the end of the shaft is fixedly connected to the rotor center hole of the rotor. A bearing is assembled in the stator center hole of the stator, and the shaft passes through the inner hole of the bearing in the stator center hole. The shaft and the rotor can rotate; the stator anti-rotation device is fixedly connected to the stator and is located on the end face far from the rotor. The stator anti-rotation device is fixed outside the circumference of the bearing; the control device is fixedly connected to an external mechanism, and the control device can control the range of clockwise or counterclockwise rotation of the stator anti-rotation device around the shaft, so that the rotation range of the stator anti-rotation device is greater than 0 degrees and less than 360 degrees; the sensor is arranged between the control device and the stator anti-rotation device, and the sensor is connected to a display and a controller.

[0007] Further, the stator anti-rotation device is a convex block, the control device is a groove or a through hole, the convex block is arranged in the groove or the through hole of the fixed control device, and the sensor is arranged in the groove or the through hole.

[0008] Further, the stator anti-rotation device is a groove or a through hole, the control device is a convex block, the convex block of the control device is arranged in the groove or the through hole of the stator anti-rotation device, and the sensor is arranged in the groove or the through hole.

[0009] Further, when the sensor is a spring, the control device is provided with a static contact, a static contact adjusting screw, a pointer and a spring force scale.

[0010] Further, the spring includes a first spring and a second spring. The first spring and the second spring are respectively arranged on both sides of the convex block of the stator anti-rotation device. The first spring and the second spring are located between the inner side surfaces of the stator anti-rotation device and the control device. The convex block of the stator anti-rotation device is arranged in the middle of the groove or the through hole of the control device. Two moving contacts are arranged on the convex block of the stator anti-rotation device, and the two moving contacts are located on both sides of the convex block. The static contact adjusting screw includes a first static contact adjusting screw and a second static contact adjusting screw. The control device is provided with screw holes for installing the first static contact adjusting screw and the second static contact adjusting screw. The front ends of the first static contact adjusting screw and the second static contact adjusting screw are provided with static contacts that cooperate with the moving contacts; the control device has two relatively arranged inner side surfaces, and two spring force scales are arranged on the inner side surfaces. The two spring force scales are located on two opposite inner side surfaces of the control device. The first static contact adjusting screw and the second static contact adjusting screw are provided with pointers that cooperate with the spring force scales.

[0011] Further, the external mechanism is on the base, the stationary body of the driven device, or the housing of the speed reducer; the shaft is coaxial with the driven load carrier, or the shaft is connected to the drive shaft of the driven load carrier through a coupling.

[0012] Further, the shaft is coaxial with the input shaft of the speed reducer or the speed increaser, or the shaft is connected to the input shaft of the speed reducer or the speed increaser through a coupling.

[0013] Further, the center of the rotor has a hollow shaft, the center of the hollow shaft has a special-shaped hole, the center of the stator has a bearing mounting hole, a bearing is installed in the bearing mounting hole, the hollow shaft is sleeved in the inner ring of the bearing, and the special-shaped hole in the center of the motor is sleeved and fixedly connected to the special-shaped end of the shaft.

[0014] Further, an encoder and a temperature controller are also provided on the motor, and the sensor is connected to the display and the controller; the sensor is a weighing sensor, a tensile sensor, a pressure sensor, a tensile and pressure sensor, an intelligent sensor, or a spring.

[0015] Further, before the motor is powered on and operates, the length value between the control device, the sensor, or the stator anti-rotation device and the axis of the shaft is set as the length value of the force arm and input into the display and the controller. The rated torque value of the motor or the rated torque value of the driven device

[0016] is set as the rated torque value that needs to be set during the operation of the motor and input into the display and the controller. When the motor is powered on and operates, the stator of the motor provides power for the rotor of the motor, and the power drives the rotor to drive the shaft to rotate, and the shaft drives the driven device.

[0017] Meanwhile, a force equal in magnitude and opposite in direction to the power is generated on the motor stator. The force opposite in direction drives the stator to drive the stator anti-rotation device to act the force opposite in direction on the sensor. The sensor is arranged between the stator anti-rotation device and the control device, and the control device is fixedly connected to an external stationary body. At this time, the sensor can monitor the torque value output in real time during the operation of the motor, and transmit the torque value output in real time during the operation of the motor to the display and the controller connected to the sensor. The length value of the force arm has been pre-input to the display and the controller. The display and the controller calculate the product of the torque value and the length value of the force arm according to the input length value of the force arm and the torque value output in real time during the operation of the motor monitored by the sensor, so as to obtain the torque value output in real time during the operation of the motor. The display and the controller display in real time the torque value output during the operation of the motor, and compare it with the set rated torque value pre-input to the display and the controller. When the torque value output in real time during the operation of the motor monitored is greater than the set rated torque value, the display and the controller give an alarm or control the motor to stop working.

[0018] Further, the sensor can also be an intelligent sensor. When the sensor is an intelligent sensor, before the motor is powered on, the length value between the control device, the intelligent sensor or the stator anti-rotation device and the axis of the shaft is set as the length value of the force arm and input to the intelligent sensor. The rated torque value of the motor or the rated torque value of the driven device

[0019] is set as the rated torque value that needs to be set during the operation of the motor and input to the display and the controller. When the motor is powered on, the motor stator provides power for the motor rotor. The power drives the rotor to drive the shaft to rotate and the shaft drives the driven device.

[0020] Meanwhile, a force equal in magnitude and opposite in direction to the power is generated on the motor stator. The force opposite in direction drives the stator to drive the stator anti-rotation device, and acts the force opposite in direction on the intelligent sensor. The intelligent sensor is arranged between the stator anti-rotation device and the control device, and the control device is fixedly connected to an external stationary body. At this time, the intelligent sensor can monitor the torque value output during the operation of the motor in real time. And the intelligent sensor multiplies the torque value output during the operation of the motor monitored in real time by the length value of the force arm that has been pre-input to the intelligent sensor through the calculation of the intelligent sensor to obtain the torque value output in real time during the operation of the motor. And transmits the torque value output in real time during the operation of the motor to the display and the controller. The display and the controller display the torque value output during the operation of the monitored motor in real time, and compare it with the set rated torque value pre-input to the display and the controller. When the torque value output in real time during the operation of the monitored motor is greater than the set rated torque value, the display and the controller give an alarm or control the motor to stop working. The display and the controller can be a torque display calculator and a controller, or a torsion display calculator and a controller. The method for monitoring the dynamic torque of the motor during operation and the motor thereof adopt the preset length value of the force arm. The length value of the force arm is the length value between the control device, the sensor or the stator anti-rotation device and the axis center of the shaft, and is set as the length value of the force arm. The preset torque value is adopted. The preset torque value is to preset the rated torque value of the motor or the rated torque value of the equipment as the rated torque value required for the operation of the motor and input it to the sensor or the display and the controller. Compare it with the torque value output in real time during the operation of the motor monitored by the sensor, the display and the controller. If it is greater than the rated torque value required for the preset operation of the motor, the display and the controller give an alarm or control the motor to stop working to protect the safe operation of the motor and the driven equipment from being damaged.

[0021] to protect the safe operation of the motor and the driven equipment from being damaged.

[0022] Compared with the prior art, for the method and motor for monitoring the dynamic torque of a motor during operation, when the motor is powered on and operating, the stator of the motor provides power to the rotor of the motor, and at the same time, a force opposite to the direction of the power provided by the stator of the motor to the rotor of the motor when the motor is powered on and operating is generated on the stator of the motor. The force opposite to the direction of the power provided by the stator of the motor to the rotor of the motor when the motor is powered on and operating acts on the sensor by means of the stator anti-rotation device, and at the same time, it acts on the sensor together with the blocking force of the control device fixed to the outside corresponding to the stator anti-rotation device. The sensor real-time monitors the torque value during the operation of the motor, and transmits the torque value during the operation of the motor to the display and controller connected to the sensor. The display and controller real-time display the monitored torque value and torsion value. When the torque value during the operation of the motor monitored is greater than the preset torque value, the display and controller give an alarm or control the motor to stop working, which can protect the safe operation of the motor and the driven equipment from being damaged.

[0023] For the method and motor for monitoring the dynamic torque of a motor during operation according to the present invention, a preset torque value is adopted. The rated torque value of the motor, the rated torque value of the equipment, or the rated torque value set according to the working needs is input into the display and controller in advance, and compared with the torque value during the operation of the motor real-time monitored by the sensor. When it is greater than the rated torque value pre-input into the display and controller, the display and controller give an alarm or control the motor to stop working, protecting the safe operation of the motor and the driven equipment from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic diagram of the outer rotor motor of the present invention.

[0026] Figure 2 It is a schematic cross-sectional view of the structure of the outer rotor motor of the present invention.

[0027] Figure 3 It is a schematic diagram of the structure of the outer rotor motor with the control device of the present invention sleeved on the shaft.

[0028] Figure 4 It is a schematic cross-sectional view of the structure of the outer rotor motor with the control device of the present invention sleeved on the shaft.

[0029] Figure 5 Schematic cross-sectional view of the outer rotor motor structure of the present invention with a hollow shaft and a stator anti-rotation device.

[0030] Figure 6 Schematic view of the structure of the motor of the present invention connected to the load shaft, with the control device fixed on the stationary body of the driven device.

[0031] Figure 7 Schematic view of the structure of the outer rotor motor of the present invention with a stator anti-rotation device, a sensor and a control device connected to the input shaft of a speed reducer, and the control device fixed on the speed reducer housing.

[0032] Figure 8 Schematic view of the structure of the outer rotor motor of the present invention with a stator anti-rotation device, a sensor and a control device connected to the input shaft of a speed increaser, and the control device fixed on the speed increaser housing.

[0033] Figure 9 Schematic view of the structure of the motor of the present invention with a stator anti-rotation device, a sensor and a control device connected to the input shaft of a worm speed reducer, and the control device fixed on the worm speed reducer housing.

[0034] Figure 10 Schematic view of the structure of the sensor of the present invention which is the first spring and the second spring.

[0035] Figure 11 For Figure 10 Enlarged schematic view of position A.

[0036] Figure 12 Schematic cross-sectional view of the inner rotor motor structure of the present invention.

[0037] Figure 13 Schematic view of the inner rotor motor structure of the present invention.

[0038] Figure 14 Schematic view of the structure of the inner rotor motor of the present invention with a stator anti-rotation device, a sensor and a control device connected to the input shaft of a speed reducer, and the control device fixed on the speed reducer housing.

[0039] Figure 15 Schematic view of the structure of the inner rotor motor of the present invention with a stator anti-rotation device, a sensor and a control device connected to the input shaft of a speed increaser, and the control device fixed on the speed increaser housing.

[0040] In the figure: 1, rotor; 2, stator; 3, shaft; 4, sensor; 5, stator anti-rotation device; 6, control device; 7, bearing; 8, display and controller; 10, coil; 11, permanent magnet; 12, fixed bracket; 13, threaded hole; 14, fixing screw; 15, special-shaped end; 16, hollow shaft; 17, driven device; 18, connecting screw; 19, speed reducer; 20, speed reducer output shaft; 21, speed increaser; 22, speed increaser output shaft; 23, static contact; 24, moving contact; 25, static contact adjusting screw; 26, special-shaped hole; 27, encoder; 28, spring force scale; 29, pointer; 30, spring. Detailed implementation manners

[0041] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restricts the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0043] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of the described features, steps, operations, devices, components and / or their combinations.

[0044] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0045] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of the present invention: the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0046] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0047] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meanings, and thus cannot be construed as limiting the protection scope of the present invention.

[0048] As Figures 1 to 15As shown in the figure, the present invention provides a method and a motor for monitoring the dynamic torque of a motor during operation, including: a rotor 1, a stator 2, a shaft 3, a sensor 4, a stator anti-rotation device 5, and a control device 6; the shaft 3 is coaxially arranged with the rotor 1 and the stator 2, and the end of the shaft 3 is fixedly connected to the rotor center hole of the rotor 1 with a fixing screw 14. A bearing 7 is assembled in the stator center hole of the stator 2, and the shaft 3 passes through the inner hole of the bearing in the stator center hole. The shaft 3 and the rotor 1 can rotate; the stator anti-rotation device 5 is fixedly connected to the stator 2 and is located on the end face far from the rotor 1. The stator anti-rotation device 5 is fixed outside the circumference of the bearing 7; the control device 6 is fixedly connected to an external mechanism. The control device 6 can block the rotation range of the stator anti-rotation device 5, so that the rotation range of the stator anti-rotation device 5 and the stator 2 is greater than 0 degrees and less than 360 degrees; the sensor 4 is arranged between the control device 6 and the stator anti-rotation device 5. The sensor 4 is connected to a display and a controller 8. The display and the controller 8 monitor and display the torque value or the torsion value in real time. When the torque value output during the operation of the monitored motor is greater than the rated torque value that needs to be set during the operation of the preset motor, the display and the controller alarm or control the motor to stop working, which can protect the safe operation of the motor and the driven equipment from being damaged.

[0049] In an embodiment of the present invention, the stator anti-rotation device 5 is a convex block, the control device 6 is a groove or a through hole, the convex block is arranged in the groove or the through hole of the fixed control device 6, and the sensor 4 is arranged in the groove or the through hole.

[0050] In an embodiment of the present invention, the stator anti-rotation device 5 is a groove or a through hole, the control device 6 is a convex block, the convex block of the control device 6 is arranged in the groove or the through hole of the stator anti-rotation device 5, and the sensor 4 is arranged in the groove or the through hole.

[0051] In an embodiment of the present invention, as Figure 10 and Figure 11 shown, when the sensor 4 is a spring 30, the control device 6 is provided with a static contact 23, a static contact adjusting screw 25, a pointer 29, and a spring elastic scale 28.

[0052] In an embodiment of the present invention, the spring 30 includes a first spring and a second spring. The first spring and the second spring are respectively disposed on two sides of the bump of the stator anti-rotation device 5. The first spring and the second spring are located between the stator anti-rotation device 5 and the inner side surface of the control device 6. The bump of the stator anti-rotation device 5 is disposed in the middle of the groove or through hole of the control device 6. Two moving contacts 24 are provided on the bump of the stator anti-rotation device 5, and the two moving contacts 24 are located on two sides of the bump. The static contact adjusting screws 25 include a first static contact adjusting screw and a second static contact adjusting screw. Threaded holes for installing the first static contact adjusting screw and the second static contact adjusting screw are provided on the control device 6. The front ends of the first static contact adjusting screw and the second static contact adjusting screw are provided with static contacts 23 that cooperate with the moving contacts; the control device has two relatively arranged inner side surfaces, and two spring force scales 28 are provided on the inner side surfaces. The two spring force scales 28 are located on two opposite inner side surfaces of the control device 6. The first static contact adjusting screw and the second static contact adjusting screw are provided with pointers 29 that cooperate with the spring force scales 28.

[0053] In an embodiment of the present invention, the external mechanism is on the base, the stationary body of the driven device 17, the housing of the speed reducer or the housing of the speed increaser; the shaft 3 is coaxial with the driven device 17, or the shaft 3 is connected to the drive shaft of the driven device 17 through a coupling.

[0054] In an embodiment of the present invention, the shaft 3 is coaxial with the input shaft of the speed reducer 19 or the speed increaser 21, or the shaft 3 is connected to the input shaft of the speed reducer 19 or the speed increaser 21 through a coupling.

[0055] In an embodiment of the present invention, as Figure 5 and Figure 12 shown, the rotor 1 has a hollow shaft in the center. The center of the hollow shaft has a special-shaped hole 26. The stator 2 has a bearing mounting hole in the center. A bearing is installed in the bearing mounting hole. The hollow shaft is sleeved in the inner ring of the bearing. The special-shaped hole 26 in the center of the motor is sleeved and fixedly connected to the special-shaped end of the shaft.

[0056] In an embodiment of the present invention, an encoder 27 and a temperature controller are further provided on the motor. The sensor 4 is connected to the display and the controller 8; the sensor 4 is a weighing sensor, a tension sensor, a pressure sensor, a tension and pressure sensor, an intelligent sensor or a spring 30.

[0057] In an embodiment of the present invention, before the motor is powered on and operates, the numerical value of the distance between the control device 6, the sensor 4 or the stator anti-rotation device 5 and the axis of the shaft 3 is set as the numerical value of the length of the force arm and input into the display and the controller 8. The rated torque numerical value of the motor or the rated torque numerical value of the driven device 17 is set as the rated torque numerical value that needs to be set during the operation of the motor for the display and the controller 8. When the motor is powered on and operates, the motor stator 2 provides power for the motor rotor 1. The power drives the rotor 1 to rotate, drives the shaft 3 to rotate, and the shaft 3 drives the driven device 17. When the motor is powered on and operates, the rotor 1 rotates, and the electromagnetic torque of the motor is simultaneously applied to the stator 2 and the rotor 1. The torque received by the stator 2 and the torque received by the rotor 1 are equal in magnitude and opposite in direction. Therefore, the torque during the operation of the motor can be monitored on the sensor 4 between the stator anti-rotation device 5 and the control device 6 and transmitted to the display controller 8. The display controller 8, according to the torque numerical value during the operation of the motor measured by the sensor 4 received, and the numerical value of the length of the force arm that has been pre-input into the display controller 8, through the calculation of the display and the controller 8, calculates the product of the torque numerical value and the length value of the force arm to obtain the real-time output torque numerical value during the operation of the motor, and compares it with the rated torque numerical value that needs to be set during the operation of the motor pre-input into the display controller 8. If the torque numerical value output during the operation of the motor is greater than the rated torque numerical value that needs to be set during the operation of the motor pre-input into the display and the controller 8, then the display and the controller alarm or the switch on the control circuit cuts off the power supply, and the motor stops operating, which can protect the safe operation of the motor and the driven device 17 from being damaged.

[0058] In an embodiment of the present invention, when the sensor is an intelligent sensor, before the motor is powered on, the length value between the control device 6, the intelligent sensor or the stator anti-rotation device 5 and the axis of the shaft 3 is set as the length value of the force arm and input into the intelligent sensor. The rated torque value of the motor or the rated torque value of the driven device 17 is set as the rated torque value to be set during the operation of the motor and input into the display and the controller. When the motor is powered on, the motor stator 2 provides power for the motor rotor 1, and the power drives the rotor 1 to drive the shaft 3 to rotate, and the shaft drives the driven device 17. At the same time, a force equal in magnitude and opposite in direction to the power is generated on the motor stator 2, and the force opposite in direction drives the stator 2 to drive the stator anti-rotation device 5. The stator anti-rotation device 5 acts the force opposite in direction on the intelligent sensor. The intelligent sensor is between the stator anti-rotation device 5 and the control device 6 fixedly connected to the external stationary body. At this time, the intelligent sensor can monitor the torque value output during the operation of the motor in real time. The intelligent sensor obtains the torque value output in real time during the operation of the motor by calculating the product of the torque value and the length value of the force arm that has been input, and transmits the torque value output in real time during the operation of the motor to the display and the controller 8. The display and the controller 8 display the torque value output during the operation of the motor monitored in real time, and compare it with the rated torque value to be set during the operation of the motor that has been pre-input into the display and the controller 8. When the torque value output in real time during the operation of the motor monitored is greater than the rated torque value to be set during the operation of the motor, the display and the controller 8 alarm or cut off the power supply of the switch on the control circuit, and the motor stops working, which can protect the safe operation of the motor and the driven device 17 from damage.

[0059] In an embodiment of the present invention, the special-shaped hole 26 and the special-shaped end 15 at the center of the motor rotor can be structures such as a triangle, a quadrilateral or other polygons or a spline hole for clamping and connecting. The special-shaped end 15 of the shaft can be a structure such as a triangle, a quadrilateral or other polygons or a spline hole for clamping and connecting that is adapted to the special-shaped hole 26. The center hole of the motor rotor can also be set as a round hole with a keyway, and the shaft can be made into a round shaft end with a keyway adapted to the round hole with a keyway set in the center hole of the motor rotor for key connection between the shaft and the center hole of the motor rotor. In addition, the speed reducer 19 can be an RV speed reducer, a precision planetary speed reducer, a harmonic reducer, a gear reducer, a worm reducer or a planetary gear reducer, etc. The motor can be a DD variable-frequency motor, a BLDC motor, a brushless DC motor, a DC motor, a direct drive motor or a torque motor.

[0060] In an embodiment of the present invention, the special-shaped hole 26 and the special-shaped end 15 at the center of the motor rotor can be polygons such as triangles, quadrilaterals, or spline holes and other structures for clamping and connection. The special-shaped end 15 of the shaft can be a polygon such as a triangle or a quadrilateral that is adapted to the special-shaped hole 26, or a spline hole and other structures for clamping and connection. The center hole of the motor rotor can also be a round hole with a keyway, and the shaft can be made with a round shaft end with a keyway that is adapted to the round hole with a keyway provided in the center hole of the motor rotor for key connection between the shaft and the center hole of the motor rotor. In addition, the speed reducer 19 can be an RV speed reducer, a precision planetary speed reducer, a harmonic reducer, a gear reducer, a worm reducer, or a planetary gear reducer, etc., and the motor can be a DD variable frequency motor, a BLDC motor, a brushless DC motor, a DC motor, a direct drive motor, or a torque motor.

[0061] Example 1. In the present invention, Figure 1This is a schematic diagram of the stator anti-rotation device 5 of the present invention being a groove. The driving device is not shown in the figure. A sensor 4 is provided on the inner side of the groove. The convex block of the control device 6 extends into the groove. The sensor 4 is located between the convex block and the inner side of the groove. The fixing bracket 12 can be fixedly connected to the outside. The sensor 4 is connected to a display and a controller 8. Before the motor is powered on, the length value of the distance between the control device 6, the sensor 4 or the stator anti-rotation device 5 and the axis of the shaft 3 is set as the length value of the force arm and input into the display and the controller 8. The rated torque value of the motor or the rated torque value of the driven device 17 is set as the rated torque value required to be set during the operation of the motor and input into the display and the controller 8. When the motor is powered on and working, the motor stator 2 provides power for the motor rotor 1. The power drives the rotor 1 to rotate, drives the shaft 3 to rotate, and the shaft 3 drives the driven device 17. When the motor is powered on and working, the rotor 1 rotates, and the electromagnetic torque of the motor is applied to both the stator 2 and the rotor 1 simultaneously. The torque received by the stator 2 and the torque received by the rotor 1 are equal in magnitude and opposite in direction. Therefore, the torque during the operation of the motor can be monitored by the sensor 4 between the stator anti-rotation device 5 and the control device 6 and transmitted to the display and the controller 8. The display and the controller 8, according to the torque value of the motor during operation measured by the sensor 4 received, and the length value of the force arm, which is the length value of the distance between the convex block of the control device 6 and the axis of the shaft 3, and the length value of the force arm has been pre-input into the display and the controller 8. The display and the controller 8, according to the input length value of the force arm and the torque value of the stator anti-rotation device 5 acting on the sensor 4 during the operation of the motor measured by the sensor 4, through the calculation of the display and the controller 8, calculate the product of the torque value and the length value of the force arm to obtain the real-time output torque value during the operation of the motor, and compare it with the rated torque value required to be set during the operation of the motor pre-input into the display and the controller 8. When the real-time output torque value during the operation of the motor is greater than the rated torque value required to be set during the operation of the motor pre-input into the display and the controller 8, the display and the controller alarm or the switch on the control circuit cuts off the power supply, and the motor stops working, which can protect the safe operation of the motor and the driven device from being damaged.

[0062] This embodiment discloses a motor, which includes a rotor 1, a stator 2, a shaft 3, a control device 6 in the form of a convex block, a stator anti-rotation device 5 in the form of a groove, and a fixed bracket 12 capable of being fixedly connected to an external stationary body. The shaft 3 passes through the center of the rotor 1 and is fixed with a fixing screw 14, and is coaxially arranged with the rotor 1 and the stator 2. The motor stator 2 is provided with a central hole, and a bearing 7 is arranged in the central hole. The shaft 3 passes through the bearing 7, and the shaft 3 and the stator 2 can rotate. The shaft 3 passes through the stator 2 and the shaft 3 can rotate. The stator 2 is provided with a groove, and convex blocks are arranged at corresponding positions on two inner side surfaces of the groove corresponding to the sensor 4. The convex blocks extend into the groove, and the sensor 4 is arranged between the two sides of the convex block and the inner side surface of the groove. The convex blocks are arranged on the fixed bracket 12, and the fixed bracket 12 is fixedly connected to the external stationary body through a connecting screw 18 passing through a threaded hole 13. The length value of the distance between the convex block of the control device 6 and the axis of the shaft 3 is set as the length value of the force arm and input into the display controller 8. The rated torque value of the motor or the rated torque value of the driven device 17 is set as the rated torque value required to be set during the operation of the motor and is pre-input into the display and controller 8. When the motor is powered on and operates, the motor rotor 1 rotates, the power drives the rotor 1 to rotate, drives the shaft 3 to rotate, and the shaft 3 drives the driven device 17. At the same time, a force that is equal in magnitude and opposite in direction to the force generated when the motor rotor 1 rotates during the energization of the motor is generated on the motor stator 2. The force opposite in direction drives the stator 2 to rotate, the stator 2 drives the groove to rotate, the groove drives the sensor 4 to rotate, the convex block blocks the rotation of the sensor 4, the convex block arranged on the fixed bracket 12 blocks the sensor 4, the force opposite in direction is transmitted to the sensor 4, and the force opposite in direction acts on the sensor 4. The convex block can block the force opposite in direction generated by the stator 2 on the sensor. One end of the sensor has the force opposite in direction generated by the stator 2, and the other end has the force of the convex block blocking the sensor 4. The force opposite in direction generated by the stator 2 and the force of the convex block blocking the sensor 4 act on both ends of the sensor 4 at the same time. At this time, the torque value output in real time during the operation of the motor can be monitored through the sensor 4. The torque value during the energization of the motor is monitored by the force opposite in direction acting on the sensor 4. This torque value is transmitted to the display and controller 8 connected to the sensor 4. The display and controller 8 calculates the product of the torque value and the length value of the force arm based on the distance between the convex block and the axis of the shaft 3 as the length value of the force arm to obtain the torque value during the operation of the motor. The display and controller 8 can monitor the torque value during the operation of the motor in real time. When the torque value monitored in real time by the display and controller 8 during the operation of the motor is greater than the rated torque value required to be set during the operation of the motor pre-input into the display and controller 8,Then the display and the controller 8 give an alarm, the switch on the control circuit cuts off the power supply, and the motor stops working, which can protect the safe operation of the motor and the driven device 17 from being damaged.

[0063] When the motor is powered on and the rotor 1 generates power, the power drives the rotor 1 to rotate, drives the shaft 3 to rotate, and the shaft 3 drives the driven device 17. At the same time, a force opposite to the direction of the power generated by the rotor 1 during the energized operation of the motor is generated on the stator 2. The force opposite in direction generated by the motor stator 2 is transmitted to the sensor in the groove. The convex block can block the force opposite in direction generated by the stator 2 on the sensor. One end of the sensor has the force opposite in direction generated by the stator 2, and the other end has the force of the convex block blocking the sensor 4. The force opposite in direction generated by the stator 2 and the force of the convex block blocking the sensor 4 act on both ends of the sensor 4 at the same time. At this time, the torque value output in real time during the operation of the motor can be monitored through the sensor 4. The display and the controller 8 calculate the product of the torque value and the length value of the force arm according to the input length value of the force arm and the torque value output in real time during the operation of the motor monitored by the sensor 4 to obtain the torque value output in real time during the operation of the motor. By comparing it with the rated torque value that needs to be set during the operation of the motor pre-input to the display and the controller 8, when the torque value output in real time during the operation of the motor is greater than the rated torque value that needs to be set during the operation of the motor pre-input to the display controller 8, the torque display calculator controller 8 gives an alarm, the switch on the control circuit cuts off the power supply, and the motor stops working, which can protect the safe operation of the motor and the driven device 17 from being damaged.

[0064] Figure 2 This is a schematic cross-sectional view of the outer-rotor motor structure of the present invention with a stator anti-rotation device, a sensor, and a control device 6. Figure 13Schematic diagram of an inner-rotor motor with a stator anti-rotation device, a sensor, and a control device 6 according to the present invention. The driven device is not shown in the figure. The stator anti-rotation device 5 is a convex block, and the control device 6 is a groove. A sensor 4 is provided on the inner side surface of the groove. The convex block of the stator anti-rotation device 5 extends into the groove. The sensor 4 is located on the two inner side surfaces of the groove corresponding to the convex block. The groove of the control device 6 is fixedly connected to a fixed bracket 12, and the fixed bracket 12 is fixedly connected to an external stationary body. The sensor 4 is connected to a display and a controller 8. Before the motor is powered on, the length value between the control device 6, the sensor 4, or the stator anti-rotation device 5 and the axis of the shaft 3 is set as the length value of the force arm and input into the display and the controller 8. The rated torque value of the motor or the rated torque value of the driven device 17 is set as the rated torque value required to be set during the operation of the motor and input into the display and the controller 8. When the motor is powered on, the motor stator 2 provides power for the motor rotor 1. The power drives the rotor 1 to rotate, drives the shaft 3 to rotate, and the shaft 3 drives the driven device 17. When the motor is powered on, the rotor 1 rotates, and the electromagnetic torque of the motor is applied to both the stator 2 and the rotor 1 simultaneously. The torque received by the stator 2 and the torque received by the rotor 1 are equal in magnitude and opposite in direction. Therefore, the torque during the operation of the motor can be monitored by the sensor 4 between the stator anti-rotation device 5 and the control device 6 and transmitted to the display controller 8. The display controller 8 calculates the product of the torque value measured by the sensor 4 during the operation of the motor and the length value of the force arm according to the real-time output torque value of the motor measured by the sensor 4 received. The length value of the force arm is the length value of the distance between the convex block of the control device 6 and the axis of the shaft 3. The length value of the distance between the convex block of the control device 6 and the axis of the shaft 3 is the length value of the force arm. The length value of the force arm is pre-input into the display controller 8. The display controller 8 calculates the product of the torque value measured by the sensor 4 during the operation of the motor and the length value of the force arm according to the length value between the convex block and the axis as the length value of the force arm input. By comparing the product of the torque value and the length value of the force arm with the rated torque value required to be set during the operation of the motor pre-input into the display controller 8, when the display and the controller 8 calculate the product of the torque value and the length value of the force arm to obtain the real-time output torque value during the operation of the motor, which is greater than the rated torque value required to be set during the operation of the motor pre-input into the display and the controller 8, the display and the controller 8 will alarm, and the switch on the control circuit will cut off the power supply, and the motor will stop working, which can protect the safe operation of the motor and the driven device from being damaged.

[0065] Example 2, as Figure 3 and Figure 4 shown, Figure 3 and Figure 4The motor of the present invention has a stator anti-rotation device, a sensor, and a control device 6, and is a schematic structural diagram of an outer-rotor motor with the control device 6 sleeved on the shaft. In this embodiment, as Figure 3 and Figure 4The control device 6 and the fixed bracket 12 shown are of an integral structure. The stator anti-rotation device 5 is a convex block, the control device 6 is a through hole, and the center of the fixed bracket 12 has a central hole in which a bearing 7 is installed. On the outer periphery of the bearing 7 installed in the central hole of the fixed bracket 12, and corresponding to the convex block of the stator anti-rotation device 5, there is a through hole of the control device 6. The shaft 3 passes through the inner hole of the bearing 7 installed in the central hole of the fixed bracket 12, and the shaft 3 can rotate. The fixed bracket 12 can be fixedly connected to the outside with a connecting screw 18 passing through a threaded hole 13 on the outer periphery of the fixed bracket 12 far from the shaft 3. The stator anti-rotation device 5 is a convex block, the control device 6 is a through hole, and sensors 4 are arranged on both circumferential side surfaces inside the through hole. The convex block of the stator anti-rotation device 5 extends into the through hole of the control device 6, and the sensors 4 are located between the convex block of the stator anti-rotation device 5 and the circumferential side surfaces of the through hole. The sensors 4 are connected to a display and a controller 8. When the motor is powered on and operates, the rotor 1 rotates, and the electromagnetic torque of the motor is applied to both the stator 2 and the rotor 1 simultaneously. The torque received by the stator 2 and the torque received by the rotor 1 are equal in magnitude and opposite in direction. Therefore, the torque output during the operation of the motor can be monitored by the sensors 4 between the stator anti-rotation device 5 and the control device 6 and transmitted to the display calculator and the controller 8. The numerical value of the length of the distance between the convex block of the stator anti-rotation device 5 and the axis of the shaft 3 is set as the length value of the force arm and input into the display controller 8. The rated torque value of the motor or the rated torque value of the driven device 17 is set as the rated torque value required to be set during the operation of the motor and is pre-input into the display and the controller 8. When the motor is powered on and operates, the motor rotor 1 rotates, the power drives the rotor 1 to rotate and drives the shaft 3 to rotate, and the shaft 3 drives the driven device. At the same time, a force equal in magnitude and opposite in direction to the force generated by the rotation of the motor rotor 1 when the motor is powered on is generated on the motor stator 2. The force in the opposite direction drives the stator 2 to rotate, the stator 2 drives the convex block to rotate, the sensor 4 blocks the rotation of the convex block, and the groove provided on the fixed bracket 12 blocks the sensor 4. The fixed bracket 12 is fixedly connected to an external stationary body with a connecting screw 18 passing through the threaded hole 13. The force in the opposite direction is transmitted to the sensor 4. The force in the opposite direction to the power generated by the motor rotor 1 when the motor is powered on acts on the sensor 4. The torque value of the motor when it is powered on is monitored with the force in the opposite direction acting on the sensor 4, and this torque value is transmitted to the display and the controller 8 connected to the sensor 4. The display and the controller 8 calculate the product of the torque value and the length value of the force arm based on the distance between the convex block and the axis of the shaft 3 as the length value of the force arm to obtain the torque value during the operation of the motor. The display and the controller 8 can monitor the torque value during the operation of the motor in real time. When the display and the controller 8 monitor in real time that the torque value during the operation of the motor is greater than the rated torque value required to be set during the operation of the motor pre-input into the display and the controller 8,Then the display and the controller 8 give an alarm, the switch on the control circuit cuts off the power supply, and the motor stops working, which can protect the safe operation of the motor and the driven device 17 from being damaged.

[0066] The control device 6 can control the range of the clockwise or counterclockwise rotation of the stator anti-rotation device 5 around the shaft 3, so that the rotation range of the stator anti-rotation device is greater than 0 degrees and less than 360 degrees.

[0067] This embodiment discloses a motor, including a rotor 1, a stator 2, a shaft 3, and a sensor 4; the control device 6 is a through hole, the stator anti-rotation device 5 is a convex block, the control device 6 and the fixed bracket 12 are of an integral structure, the through hole of the control device 6 is arranged on the fixed bracket 12, and the fixed bracket 12 is fixedly connected to an external stationary body through a connecting screw 18 passing through a threaded hole 13. The rotor 1 has a central hole, a special-shaped end 15 at one end of the shaft 3 penetrates into a special-shaped hole 26 in the center of the rotor 1 and is fixedly connected with a fixing screw 14. The stator 2 has a central hole, and a bearing 7 is installed in the central hole of the stator 2. The stator 2 can rotate, and the other end of the shaft 3 fixed to the rotor 1 passes through the inner hole of the bearing 7 in the central hole of the stator 2 and passes through the bearing inner hole of the bearing 7 installed in the central hole of the fixed bracket 12. The shaft 3 can be the drive shaft of the driven device 17 directly driven by the driven device 17, or the input shaft of the speed reducer 19, driving the input shaft of the speed reducer 19, and the output shaft of the speed reducer 19 is connected to the driven device 17 (the speed reducer 19 and the driven device 17 are not shown in the figure); on one end of the end face of the stator 2 away from the rotor 1 and at a position outside the bearing 7, a convex block is provided. When the motor is powered on and works, the motor rotor 1 generates power, and the power drives the rotor 1 to rotate, driving the shaft 3 to rotate, and the shaft 3 drives the driven device 17. At the same time, a force equal in magnitude and opposite in direction to the power generated by the energized motor rotor 1 is generated on the stator 2. The force opposite in direction drives the stator 2 to rotate, driving the convex block to rotate. A fixed stationary through hole is provided on the same circumference as the rotation of the convex block, and the convex block extends into the through hole, and the stator 2 can drive the convex block to rotate clockwise or counterclockwise at the orifice of the through hole. On the circumferential contact surface in the through hole where the stator 2 can drive the convex block to rotate clockwise and counterclockwise at the orifice of the through hole, a sensor 4 is provided. In the fixed stationary through hole, the sensor can block the clockwise or counterclockwise rotation of the stator driving the convex block. The range of the angle at which the through hole sensor blocks the stator from driving the convex block to rotate is greater than 0 degrees and less than 360 degrees, and the sensor 4 is arranged on the two circumferential side surfaces in the through hole.

[0068] When the motor is powered on and operates, the rotor 1 rotates to drive the shaft 3 to rotate. The shaft 3 drives the driven device 17. The stator 2 drives the convex block to rotate around the shaft and rotates in a direction opposite to the direction in which the rotor 1 drives the shaft 3 to rotate. Sensors 4 are arranged on the circumferential two side surfaces within the through hole, and the range of the angle that blocks the stator from driving the convex block to rotate is greater than 0 degrees and less than 360 degrees.

[0069] When the motor is powered on and operates, the motor rotor 1 rotates, and at the same time, a force that is equal in magnitude and opposite in direction to the force generated when the motor rotor 1 rotates when the motor is powered on and operates is generated on the motor stator 2. The force in the opposite direction drives the stator 2 to rotate. The stator 2 drives the convex block to rotate. The sensor 4 blocks the rotation of the convex block. The force in the opposite direction is transmitted to the sensor 4. The force in the opposite direction to the power generated by the rotor 1 when the motor is powered on and operates acts on the sensor 4. The force in the opposite direction acting on the sensor 4 is used to monitor the torque value of the motor when it is powered on and operates. This torque value is transmitted to the display and controller 8 connected to the sensor 4. The display and controller 8 calculate the product of the torque value and the length value of the force arm with the distance between the convex block and the axis of the shaft 3 as the length value of the force arm to obtain the torque value actually output during the operation of the motor. The display and controller 8 connected to the sensor 4 can monitor the torque value during the operation of the motor in real time. When the display and controller 8 connected to the sensor 4 monitors the torque value during the operation of the motor in real time and is greater than the rated torque value that needs to be set during the operation of the motor pre-input into the display and controller 8, the display and controller 8 alarms, and the switch on the control circuit cuts off the power supply, and the motor stops operating, which can protect the safe operation of the motor and the driven device 17 from being damaged.

[0070] Embodiment 3 Figure 5 is a schematic cross-sectional view of the outer rotor motor structure of the present invention with a hollow shaft and a stator anti-rotation device. Figure 12 is a schematic cross-sectional view of the inner rotor motor structure of the present invention with a hollow shaft and a stator anti-rotation device, where Figure 5 is the outer rotor structure. Figure 12 is the inner rotor structure. The stator anti-rotation device 5 is a convex block. The rotor 1 has a hollow shaft 16 at its center, and a special-shaped hole 26 is provided at the center of the hollow shaft. The stator 2 has a bearing mounting hole at its center, and a bearing 7 is installed in the bearing mounting hole. The hollow shaft 16 is sleeved in the inner ring of the bearing 7, and the special-shaped hole 26 of the motor hollow shaft 16 is sleeved and fixedly connected to the special-shaped end of the shaft.

[0071] The control device, fixed bracket, sensor, driven device, and speed reducer are not shown in the figure.

[0072] In this embodiment, the motor shaft is a hollow shaft. When the center of the motor rotor has a hollow shaft, the center of the hollow shaft 16 has a special-shaped hole 26; the center of the motor stator 2 has a bearing mounting hole, and a bearing 7 is installed in the bearing mounting hole. The hollow shaft 16 is sleeved in the inner ring of the bearing 7; a stator anti-rotation device 5 is provided on the stator 2, and the motor stator 2 can rotate coaxially with the hollow shaft 16 on the hollow shaft 16.

[0073] When the hollow shaft 16 drives the driven device 17, the special-shaped hole 26 in the center of the motor hollow shaft 16 can be sleeved on the special-shaped end of the shaft of the driven device 17 and fixedly connected. The special-shaped hole 26 of the motor hollow shaft can be sleeved on the special-shaped end made on the shaft end of the driven device 17 and fixedly connected. The fixing bracket 12 is connected and fixed to the stationary body or the base of the driven device 17. The control device 6 is arranged on the fixing bracket, and the sensor 4 is arranged between the stator anti-rotation device 5 and the control device 6.

[0074] When the hollow shaft 16 drives the reduction mechanism, the special-shaped hole 26 of the motor hollow shaft 16 can be sleeved on the special-shaped end made on the shaft end of the input shaft of the reduction mechanism and fixedly connected. The fixing bracket is connected and fixed to the stationary body or the base of the reduction mechanism. The control device 6 is arranged on the fixing bracket, and the sensor 4 is arranged between the stator anti-rotation device 5 and the control device 6; the output shaft 20 of the reduction mechanism is connected to the driven device 17; an encoder 27, a temperature controller, the sensor 4, and the display controller 8 can be modularly controlled by a single-chip microcomputer on the motor.

[0075] Embodiment 4 Figure 6The motor with a stator anti-rotation device, a sensor and a control device 6 according to the present invention is connected to a load shaft. The structure diagram shows that the control device 6 is fixed on the stationary body of the driven device. The stator anti-rotation device 5 is a convex block, and the control device 6 is a groove. A sensor 4 is provided on the inner side surface of the groove. The convex block of the stator anti-rotation device 5 extends into the groove. The sensor 4 is located between the convex block and the inner side surface of the groove. The groove is provided on a fixed bracket 12. The fixed bracket 12 is fixedly connected to the stationary body of the driven device 17 through a connecting screw 18 passing through a threaded hole 13. The sensor 4 is connected to a control display and a controller 8. When the motor is powered on and operates, the rotor 1 rotates. The electromagnetic torque of the motor is applied to both the stator 2 and the rotor 1 simultaneously. The torque received by the stator 2 and the torque received by the rotor 1 are equal in magnitude and opposite in direction. Therefore, the torque during the operation of the motor can be monitored by the sensor 4 between the stator anti-rotation device 5 and the control device 6. The distance between the convex block and the axis of the shaft 3 is set as the length value of the force arm and input into the display and the controller 8. The rated torque value of the motor or the rated torque value of the driven device 17 is set as the rated torque value required during the operation of the motor and input into the display and the controller 8. When the motor is powered on and operates, the motor rotor 1 rotates. The power drives the rotor 1 to rotate, driving the shaft 3 to rotate, and the shaft 3 drives the driven device 17. At the same time, a force equal in magnitude and opposite in direction to the force that causes the motor rotor 1 to rotate when the motor is powered on is generated on the motor stator 2. The force in the opposite direction drives the stator 2 to rotate. The stator 2 drives the convex block to rotate. The sensor 4 blocks the rotation of the convex block. The groove provided on the fixed bracket 12 blocks the sensor 4. The force in the opposite direction is transmitted to the sensor 4. The force equal in magnitude and opposite in direction to the force that causes the motor rotor 1 to rotate when the motor is powered on, acting on the sensor 4, is used to monitor the torque value during the operation of the motor. This torque value is transmitted to the display and the controller 8 connected to the sensor 4. The display and the controller 8 calculate the product of the torque value and the length value of the force arm based on the distance between the convex block and the axis of the shaft 3 as the length value of the force arm to obtain the torque value during the operation of the motor. The display and the controller 8 can monitor the torque value during the operation of the motor in real time. When the display and the controller 8 monitor in real time that the torque value during the operation of the motor is greater than the rated torque value required during the operation of the motor previously input into the display and the controller 8, the display and the controller 8 will alarm and cut off the power supply of the switch on the control circuit, and the motor will stop operating, which can protect the safe operation of the motor and the driven device 17 from damage.

[0076] In this drawing, the motor is directly connected to the load shaft of the driven device 17. The control device 6 is provided on the fixed bracket 12. The fixed bracket 12 is fixedly connected to the stationary body of the driven device 17 through a connecting screw 18 passing through a threaded hole 13.

[0077] Embodiment 5 Figure 7 It is a schematic structural diagram of an outer-rotor motor with a stator anti-rotation device, a sensor and a control device 6 of the present invention connected to the input shaft of a speed reducer, and the control device 6 is fixed on the speed reducer housing. Figure 8 It is a schematic structural diagram of an outer-rotor motor with a stator anti-rotation device, a sensor and a control device 6 of the present invention connected to the input shaft of a speed increaser, and the control device 6 is fixed on the speed increaser housing. Figure 9 It is a schematic structural diagram of a motor with a stator anti-rotation device, a sensor and a control device 6 of the present invention connected to the input shaft of a worm speed reducer, and the control device 6 is fixed on the worm speed reducer housing. Figure 14 It is a schematic structural diagram of an inner-rotor motor with a stator anti-rotation device, a sensor and a control device 6 of the present invention connected to the input shaft of a speed reducer, and the control device 6 is fixed on the speed reducer housing. Figure 15 It is a schematic structural diagram of an inner-rotor motor with a stator anti-rotation device, a sensor and a control device 6 of the present invention connected to the input shaft of a speed increaser, and the control device 6 is fixed on the speed increaser housing. The output shaft 20 of the speed reducer is connected to a driven device (not shown in the figure), and the output shaft 22 of the speed increaser is connected to a driven device (not shown in the figure).

[0078] In Figure 7 、 Figure 9 、 Figure 14 the stator anti-rotation device 5 is a convex block, the control device 6 is a groove, a sensor 4 is arranged on the inner side surface of the groove, the convex block of the stator anti-rotation device 5 extends into the groove, the sensor 4 is located between the convex block and the inner side surface of the groove, the groove of the control device 6 is arranged on the fixed bracket 12, and in Figure 7 、 Figure 14 the fixed bracket 12 is fixedly connected to the housing of the speed reducer 19 by a connecting screw 18 passing through a threaded hole 13, and in Figure 9The middle fixed bracket 12 is fixedly connected to the worm gear reducer housing through the connecting screw 18 passing through the threaded hole 13. The sensor 4 is connected to the control display 8. When the motor is powered on and operates, the rotor 1 rotates. The electromagnetic torque of the motor is simultaneously applied to both the stator 2 and the rotor 1. The torque received by the stator 2 and the torque received by the rotor 1 are equal in magnitude and opposite in direction. Therefore, the torque during the operation of the motor can be monitored by the sensor 4 between the stator anti-rotation device 5 and the control device 6 and transmitted to the display and the controller 8. The distance between the set bump and the axis of the shaft 3 is set as the value of the length of the force arm and input into the display and the controller 8. The rated torque value of the motor or the rated torque value of the driven device 17 is set as the rated torque value required during the operation of the motor and input into the display and the controller 8. The reduction ratio value of the reducer 19 is input into the display and the controller 8. When the motor is powered on and operates, the motor rotor 1 rotates. The rotation of the rotor 1 drives the input shaft of the reducer to rotate and drives the output shaft 20 of the reducer to rotate. The output shaft 20 of the reducer drives the driven device 17. At the same time, a force equal in magnitude and opposite in direction to the force generated by the rotation of the motor rotor 1 when the motor is powered on is generated on the motor stator 2. The force in the opposite direction drives the stator 2 to rotate. The stator 2 drives the bump to rotate. The sensor 4 blocks the rotation of the bump. The groove provided on the fixed bracket 12 blocks the sensor 4. The force in the opposite direction is transmitted to the sensor 4. The force equal in magnitude and opposite in direction to the force generated by the rotation of the motor rotor 1 when the motor is powered on acts on the sensor 4. The torque value during the operation of the motor is monitored by the force in the opposite direction acting on the sensor 4. This torque value is transmitted to the display and the controller 8 connected to the sensor 4. The display and the controller 8 calculate the product of the torque value and the value of the length of the force arm based on the distance between the bump and the axis of the shaft 3 as the value of the length of the force arm to obtain the torque value during the operation of the motor. The display and the controller 8 can monitor the torque value during the operation of the motor in real time. When the torque value during the operation of the motor monitored by the display and the controller 8 in real time is greater than the rated torque value required during the operation of the motor pre-input into the display and the controller 8, the display and the controller 8 will alarm and cut off the power supply on the control circuit, and the motor will stop operating, which can protect the safe operation of the motor and the driven device 17 from damage.

[0079] In Figure 8 、 Figure 15 the stator anti-rotation device 5 is a bump, and the control device 6 is a groove. The inner side of the groove is provided with a sensor 4. The bump of the stator anti-rotation device 5 extends into the groove. The sensor 4 is located between the bump and the inner side of the groove. The groove of the control device 6 is provided on the fixed bracket 12. In Figure 8 、 Figure 15The middle fixed bracket 12 is fixedly connected to the housing of the speed increaser 21 through the connecting screw 18 passing through the threaded hole 13. The sensor 4 is connected to the control display and the controller 8. When the motor is powered on and operates, the rotor 1 rotates. The electromagnetic torque of the motor is applied to both the stator 2 and the rotor 1 simultaneously. The torque received by the stator 2 and the torque received by the rotor 1 are equal in magnitude and opposite in direction. Therefore, the torque during the operation of the motor can be monitored by the sensor 4 between the stator anti-rotation device 5 and the control device 6 and transmitted to the display and the controller 8. The distance between the set convex block and the axis of the shaft 3 is set as the length value of the force arm and input into the display and the controller 8. The rated torque value of the motor or the rated torque value of the driven device 17 is set as the rated torque value required during the operation of the motor and input into the display and the controller 8. The reduction ratio value of the speed increaser 21 is input into the display and the controller 8. When the motor is powered on and operates, a rotational force is generated on the motor rotor 1. The rotational force drives the rotor 1 to rotate, drives the input shaft of the speed increaser to rotate, and drives the output shaft 22 of the speed increaser to rotate. The output shaft 22 of the speed increaser drives the driven device 17. At the same time, a force equal in magnitude and opposite in direction to the rotational force generated on the motor rotor 1 when the motor is powered on and operates is generated on the motor stator 2. The force in the opposite direction drives the stator 2 to rotate. The stator 2 drives the convex block to rotate. The sensor 4 blocks the rotation of the convex block. The groove provided on the fixed bracket 12 blocks the sensor 4. The force in the opposite direction is transmitted to the sensor 4. A force equal in magnitude and opposite in direction to the rotational force of the motor rotor 1 when the motor is powered on and operates is generated on the motor stator 2 and acts on the sensor 4. The torque value during the operation of the motor is monitored by the force in the opposite direction acting on the sensor 4. The torque value is transmitted to the display and the controller 8 connected to the sensor 4. The display and the controller 8 calculate the product of the torque value and the length value of the force arm based on the distance between the convex block and the axis of the shaft 3 as the length value of the force arm to obtain the torque value during the operation of the motor. The display and the controller 8 can monitor the torque value during the operation of the motor in real time. When the torque value during the operation of the motor monitored by the display and the controller 8 in real time is greater than the rated torque value required during the operation of the motor pre-input into the display and the controller 8, the display and the controller 8 will alarm and cut off the power supply of the switch on the control circuit, and the motor will stop operating, which can protect the safe operation of the motor and the driven device 17 from being damaged.

[0080] The display and the controller 8 calculate the product of the torque value and the length value of the force arm to obtain the torque value actually output during the operation of the motor. The display and the controller 8 use the torque value actually output during the operation of the motor and calculate it with the reduction ratio value of the reduction gear 19 or the speed increase ratio value of the speed increase machine 21 input to the display and the controller 8. The display and the controller 8 can obtain the torque value output by the output shaft 20 of the reduction gear or the output shaft 22 of the speed increase machine through calculation. At the same time, the display and the controller 8 obtain the torque value of the output shaft 20 of the reduction gear driving the driven device 17 or the output shaft 22 of the speed increase machine driving the driven device 17. When the torque value of driving the driven device 17 is greater than the rated torque value of the driven device 17, the display and the controller 8 alarm, the switch on the control circuit cuts off the power supply, and the motor stops working, which can protect the safe operation of the driven device 17 from being damaged.

[0081] In the appendix Figure 7 、 Figure 9 and Figure 14 , the motor is directly connected to the input shaft of the reduction gear 19, and the control device 6 is fixed to the housing of the reduction gear 19 through the fixing bracket 12.

[0082] In the appendix Figure 8 and Figure 15 , the motor is directly connected to the input shaft of the speed increase machine 21, and the control device 6 is fixed to the housing of the speed increase machine 21 through the fixing bracket 12.

[0083] Figure 10 This is a schematic structural diagram of the sensor of the present invention, which is the first spring and the second spring. The driven device is not shown in the figure. In Figure 10Among them, the sensors are the first spring and the second spring, the stator anti-rotation device 5 is a convex block, and the control device 6 is a groove. When the sensor 4 is the spring 30, the spring can be a bending spring, a tensile spring, a compression spring, or a torsion spring, regardless of the type and shape. It is used in an environment with strong electromagnetic interference. The one shown in the figure is a compression spring. The control device 6 is provided with a static contact 23, a static contact adjusting screw 25, a pointer 29, and a spring elastic scale 28. The spring 30 includes a first spring and a second spring. The first spring and the second spring are respectively arranged on both sides of the convex block of the stator anti-rotation device 5. The first spring and the second spring are located between the inner side surface of the stator anti-rotation device 5 and the control device 6. The convex block of the stator anti-rotation device 5 is arranged in the middle of the groove of the control device 6. Two moving contacts 24 are arranged on the convex block of the stator anti-rotation device 5, and the two moving contacts 24 are located on both sides of the convex block. The static contact adjusting screw 25 includes a first static contact adjusting screw and a second static contact adjusting screw. The control device 6 is provided with threaded holes for installing the first static contact adjusting screw and the second static contact adjusting screw. The front ends of the first static contact adjusting screw and the second static contact adjusting screw are provided with static contacts 23 that cooperate with the moving contacts. The control device 6 has two relatively arranged inner side surfaces. Two spring elastic scales 28 are arranged on the inner side surfaces, and the two spring elastic scales 28 are located on two opposite inner side surfaces of the control device 6. The first static contact adjusting screw and the second static contact adjusting screw are provided with a pointer 29 and a static contact 23 that cooperate with the spring elastic scale 28.

[0084] In Figure 10 and Figure 11 Among them, the driven device is not shown in the figure. In Figure 10 and Figure 11Among them, the first spring and the second spring are respectively arranged on both sides of the bump of the stator anti-rotation device. One end of the first spring and the second spring is connected in a crimping manner on both sides of the bump that extends into the groove of the control device 6 where the bump of the stator anti-rotation device is located. And the other end of the first spring and the second spring is connected in a fixed manner to the inner side surface of the corresponding groove of the control device 6. The bump is in the middle of the groove. The first spring and the second spring are respectively connected in a crimping manner between the two side surfaces corresponding to the two inner side surfaces of the bump and the two inner side surfaces of the groove. The bump is in the middle of the groove. A moving contact 24 is arranged on the side surface of the bump where the first spring is crimped to the groove. And the moving contact 24 is arranged in sequence from one end to the other end of the bump that extends into the groove of the control device 6 by the stator anti-rotation device. One end of the first spring and the second spring is a crimping part. The other end of the bump is fixedly connected to the stator 2. A threaded hole is arranged at the position of the inner side surface of the groove corresponding to the moving contact 24. A static contact adjusting screw 25 is arranged in the threaded hole. And the line connecting the spring and the static contact adjusting screw 25 is parallel to the extending direction of the bump. One end of the static contact adjusting screw 25 corresponding to the moving contact 24 is provided with a pointer 29 and a static contact 23. And the pointer 29 and the static contact 23 are arranged at the end of the static contact adjusting screw 25. The moving contact 24 and the static contact 23 are connected to the display and the controller 8 through a circuit. And the pointer 29 points at a 90-degree angle to the line connecting the two ends of the static contact adjusting screw 25, that is, the pointer 29 points perpendicular to the line connecting the two ends of the static contact adjusting screw 25. A spring force scale 28 is arranged at the needle end position of the pointer. Two spring force scales 28 are arranged. The two spring force scales 28 are respectively arranged on the outer circumferences of the first spring and the second spring, and are arranged circumferentially. And the ends with larger spring force scale values of the two spring force scales 28 are respectively fixedly connected to the inner side surface of the groove corresponding to the moving contact 24. On the outer circumference of the line connecting the two ends of the first spring and the second spring, the spring force scale values on the two spring force scales 28 are consistent with the spring force in the compression stroke of the first spring and the second spring. The other end of the static contact adjusting screw 25 is outside the groove. Before the motor is powered on and operates, the rated torque value of the motor or the rated torque value of the driven device 17 is set as the rated torque value that needs to be set during the operation of the motor. The distance length value between the bump of the stator anti-rotation device 5 and the shaft 3 is the length value of the force arm. By calculating the required rated torque value divided by the length value of the force arm, the corresponding spring force value is obtained. Manually rotating the static contact adjusting screw 25 can adjust the distance between the moving contact 24 and the static contact 23, so that the pointer 29 points to the spring force scale value on the spring force scale 28 that is consistent with the corresponding spring force value. The corresponding spring force value multiplied by the length value of the force arm is consistent with the rated torque value that needs to be set during the operation of the motor. The obtained corresponding spring force value is consistent. The torque value obtained by multiplying the spring force scale value pointed by the pointer 29 on the spring force scale 28 by the length value of the force arm,It is consistent with the rated torque value that needs to be set during the operation of the motor. The pointer 29 indicates the corresponding elastic force value. When the signal that sets the moving contact 24 to contact the static contact 23 is transmitted to the moving contact 24 and the static contact 23, and the display and the controller 8 are connected through a circuit, the display and the controller 8 give an alarm, the switch on the control circuit cuts off the power supply, and the motor stops working. When the motor is powered on and operates, a rotational force is generated on the motor rotor 1. The rotational force drives the rotor 1 to rotate, drives the shaft 3 to rotate, and the shaft 3 drives the driven device 17. At the same time, a force opposite to the direction of the rotational force of the motor rotor 1 is generated on the motor stator 2. The force opposite in direction drives the stator 2 to rotate. The stator 2 drives the convex block to rotate. The spring blocks the rotation of the convex block. The convex block rotates and compresses the spring. The force opposite in direction acts on the spring 30. The torque value obtained by multiplying the elastic force value of the spring by the length value of the force arm is the torque value output by the motor when it is powered on and operates. As the torque increases, the compression stroke of the spring also increases, and the torque value output by the motor when it is powered on and operates also increases. The stator 2 drives the convex block of the stator anti-rotation device to compress the spring, and at the same time drives the moving contact 24 on the convex block. When the spring 30 is compressed until the moving contact 24 on the convex block reaches the static contact 23 and the pointer 29 indicates the corresponding elastic force value, when the moving contact 24 and the static contact 23 come into contact, at this time the motor output torque value reaches the rated torque value that needs to be set during the operation of the motor. The moving contact 24 on the convex block comes into contact with the static contact 23. At the same time, the signal of the contact between the moving contact 24 and the static contact 23 is transmitted to the moving contact 24 and the static contact 23, and the display and the controller 8 are connected through a circuit. The display and the controller 8 give an alarm, the switch on the control circuit cuts off the power supply, and the motor stops working, protecting the motor and the driven equipment from damage safely.

[0085] During the operation of the motor when it is powered on, the torque value obtained by multiplying the elastic force value of the convex block compressing the spring by the length value of the force arm is the torque value output by the motor when it is powered on and operates.

[0086] Before the motor is powered on and operates, manually adjust the static contact adjusting screw 25. The static contact 23 and the pointer 29 move synchronously, and the position pointed to by the pointer 29 is the same as the position of the static contact 23. The position pointed to by the pointer 29 on the spring force scale 28 is the spring force scale position corresponding to the rated torque value of the motor or the rated torque value of the driven device 17, which is set to be the same as the spring force scale position corresponding to the rated torque value required during the operation of the motor. On the display and controller 8, when the signal that the moving contact 24 contacts the static contact 23 is transmitted to the display and controller 8 through the circuit connecting the moving contact 24 and the static contact 23, the display and controller 8 control the power supply of the circuit to be disconnected, and the motor stops working. When the motor operates, the motor stator 2 provides power for the motor rotor 1, and the motor rotor 1 rotates. At the same time, a force opposite to the direction of the power provided by the motor stator 2 for the motor rotor 1 when the motor is powered on and operates is generated on the motor stator 2. The force in the opposite direction drives the stator 2, and the stator 2 drives the moving contact 24 on the convex block of the stator anti-rotation device to compress the spring. When the compression stroke of the convex block spring reaches the point where the moving contact 24 on the convex block contacts the static contact 23 on the groove, the output torque of the motor reaches the rated torque value required during the operation of the motor. When the moving contact 24 on the convex block contacts the static contact 23 on the groove, at the same time, the signal that the moving contact 24 contacts the static contact 23 is transmitted to the display and controller 8 through the circuit connecting the moving contact 24 and the static contact 23. The display and controller 8 gives an alarm, and the switch on the control circuit cuts off the power supply, and the motor stops working. The motor stops working to protect the motor and the driven equipment from being damaged safely.

[0087] Figure 1 、 Figure 2 As shown, the motor is an outer rotor motor, and the motor includes a rotor 1, a stator 2, and a shaft 3. The rotor 1 includes a rotor housing, and the rotor housing is of a basin-shaped structure. The rotor 1 is sleeved outside the stator 2. The shaft 3 passes through the inner hole of the bearing 7 provided in the central hole of the stator 2. One end of the shaft 3 is connected to the central hole of the rotor 1. The stator 2 has a coil 10. A plurality of permanent magnets 11 are evenly arranged on the inner wall of the housing of the rotor 1. The stator anti-rotation device 5 is fixedly connected to the stator 2 and is located on the end face far from the rotor. The stator anti-rotation device 5 is fixed to the outer circumference of the bearing 7; the control device 6 is fixedly connected to the outside, and the sensor 4 is arranged between the control device 6 and the stator anti-rotation device 5. The sensor 4 is connected to the display and controller 8. When the motor is powered on and operates, the rotor 1 can rotate clockwise or counterclockwise around the axis of the stator 2.

[0088] Figure 12 、 Figure 13The motor shown is an inner-rotor motor. The motor includes a rotor 1, a stator 2, and a shaft 3. The stator 2 includes a stator housing, which is of a basin-shaped structure. The stator 2 is sleeved outside the rotor 1. The shaft 3 passes through the inner hole of a bearing 7 provided in the central hole of the stator 2. One end of the shaft 3 is connected to the central hole of the rotor 1. The stator 2 has a coil 10. A plurality of permanent magnets 11 are evenly arranged on the outer circumference of the rotor. The stator anti-rotation device 5 is fixedly connected to the stator 2 and is located on the end face far from the rotor. The stator anti-rotation device 5 is fixed to the outer circumference of the bearing 7. The control device 6 is fixedly connected to the outside. The sensor 4 is arranged between the control device 6 and the stator anti-rotation device 5. The sensor 4 is connected to a display and a controller 8. When the motor is powered on and working, the rotor 1 can rotate clockwise or counterclockwise around the axis of the stator 2.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A motor for monitoring the dynamic torque of a motor during operation, characterized in that, it includes: a rotor, a stator, a shaft, a sensor, a stator anti-rotation device and a control device; The shaft is coaxially arranged with the rotor and the stator, and the end of the shaft is fixedly connected to the rotor center hole of the rotor. A bearing is assembled in the stator center hole of the stator, and the shaft passes through the inner hole of the bearing in the stator center hole. The shaft and the rotor can rotate; The stator anti-rotation device is fixedly connected to the stator and is located on the end face far from the rotor. The stator anti-rotation device is fixed outside the circumference of the bearing; The control device is fixedly connected to an external mechanism. The control device can control the range of clockwise or counterclockwise rotation of the stator anti-rotation device around the shaft, so that the rotation range of the stator anti-rotation device is greater than 0 degrees and less than 360 degrees; The sensor is arranged between the control device and the stator anti-rotation device. The sensor is connected to a display and a controller; When the sensor is a spring, the control device is provided with a static contact, a static contact adjusting screw, a pointer and a spring force scale; The spring includes a first spring and a second spring. The first spring and the second spring are respectively arranged on both sides of the convex block of the stator anti-rotation device. The first spring and the second spring are located between the inner side surfaces of the stator anti-rotation device and the control device, The convex block of the stator anti-rotation device is arranged in the groove or through hole of the control device. Two moving contacts are arranged on the convex block of the stator anti-rotation device, and the two moving contacts are located on both sides of the convex block. The static contact adjusting screw includes a first static contact adjusting screw and a second static contact adjusting screw. The control device is provided with threaded holes for installing the first static contact adjusting screw and the second static contact adjusting screw. The front ends of the first static contact adjusting screw and the second static contact adjusting screw are provided with static contacts that cooperate with the moving contacts; The control device has two relatively arranged inner side surfaces. Two spring force scales are arranged on the inner side surfaces, and the two spring force scales are located on the two relatively arranged inner side surfaces of the control device. The first static contact adjusting screw and the second static contact adjusting screw are provided with pointers that cooperate with the spring force scales.

2. The motor for monitoring the dynamic torque of a motor during operation according to claim 1, characterized in that, The stator anti-rotation device is a convex block, the control device is a groove or a through hole, the convex block is arranged in the groove or through hole of the fixed control device, and the sensor is arranged in the groove or through hole.

3. The motor for monitoring the dynamic torque of a motor during operation according to claim 1, characterized in that, The stator anti-rotation device is a groove or a through hole, the control device is a convex block, the convex block of the control device is arranged in the groove or through hole of the stator anti-rotation device, and the sensor is arranged in the groove or through hole.

4. The motor for monitoring the dynamic torque of a motor during operation according to claim 1, 2 or 3, characterized in that, The external mechanism is on the base, the stationary body of the driven device, or the housing of the speed reducer; The shaft is coaxial with the driving load carrier, or the shaft is connected to the driving shaft of the driving load carrier through a coupling.

5. The motor for monitoring the dynamic torque of the motor during operation according to claim 1, 2, or 3, Characterized in that, The shaft is coaxial with the input shaft of the speed reducer or speed increaser, or the shaft is connected to the input shaft of the speed reducer or speed increaser through a coupling.

6. The motor for monitoring the dynamic torque of the motor during operation according to claim 1, 2, or 3, Characterized in that, The center of the rotor has a hollow shaft, the center of the hollow shaft has a special-shaped hole, the center of the stator has a bearing mounting hole, a bearing is installed in the bearing mounting hole, the hollow shaft is sleeved in the inner ring of the bearing, and the special-shaped hole in the center of the motor is sleeved and fixedly connected to the special-shaped end of the shaft.

7. The motor for monitoring the dynamic torque of the motor during operation according to claim 1, 2, or 3, Characterized in that, The motor is also provided with an encoder and a temperature controller, and the sensor is connected to the display and the controller; the sensor is a load cell, a tension sensor, a pressure sensor, a tension and pressure sensor, an intelligent sensor, or a spring.

8. The method for the motor for monitoring the dynamic torque of the motor during operation according to claim 1, 2, 3, 4, 5, 6, or 7, Characterized in that, Before the motor is powered on and operates, set the length value between the control device, the sensor or the stator anti-rotation device and the axis center of the shaft as the length value of the force arm, and input it into the display and the controller. Set the rated torque value of the motor or the rated torque value of the driven device as the rated torque value that needs to be set during the operation of the motor, and input it into the display and the controller. When the motor is powered on and operates, the motor stator provides power for the motor rotor. The power drives the rotor to drive the shaft to rotate, and the shaft drives the driven device. At the same time, a force equal in magnitude and opposite in direction to the power is generated on the motor stator. The force opposite in direction drives the stator to drive the stator anti-rotation device to act the force opposite in direction on the sensor. The sensor is arranged between the stator anti-rotation device and the control device, and the control device is fixedly connected to an external stationary body. At this time, the sensor can monitor the torque value output in real time during the operation of the motor, and transmit the torque value output in real time during the operation of the motor to the display and the controller connected to the sensor. The length value of the force arm has been pre-input into the display and the controller. The display and the controller calculate the product of the torque value and the length value of the force arm according to the input length value of the force arm and the torque value output in real time during the operation of the motor monitored by the sensor transmitted by the sensor, so as to obtain the torque value output in real time during the operation of the motor. The display and the controller display in real time the torque value output during the operation of the motor monitored, and compare it with the set rated torque value pre-input into the display and the controller. When the torque value output in real time during the operation of the motor monitored is greater than the set rated torque value, the display and the controller give an alarm or control the motor to stop working.

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