Magnetic detection device for magnetic rotor in magnetic coupler

Abstract

The utility model relates to the technical field of magnetic couplers, and provides a magnetic coupler inner magnetic rotor magnetism detection device which comprises a base, a speed reducer unit, a measuring unit and an inner magnetic rotor rotating unit. The inner magnetic rotor rotating unit comprises a driving shaft, a bearing and a coupling shaft; the driving shaft is fixed with the shaft through a coupling; the driving shaft and the bearing are mounted on the bearing bracket; the coupling shaft is connected with the driving shaft; the coupling shaft is used for installing a tested inner magnetic rotor; the measuring unit comprises a position sensor, a data collector and a detection device stator; the position sensor comprises a shading disc and a photoelectric switch; the photoelectric switch is fixedly mounted outside the speed reducer; the shading disc is arranged at the end part of the shaft and strides across the photoelectric switch; and a notch is formed in the outer side of the shading disc. According to the utility model, overall measurement can be realized, the measurement is convenient, the measurement efficiency is improved, and the magnetic intensity of magnetic blocks of inner magnetic rotors with different specifications can be measured.

Description

TECHNICAL FIELD

[0001] The utility model relates to magnetic coupling technical field especially relates to a magnetic coupling inner magnet rotor magnetic detection device. BACKGROUND

[0002] Magnetic coupling is a kind of non-contact power transmission, compared with ordinary mechanical transmission, magnetic coupling realizes energy transmission using electromagnetism principle, does not need direct mechanical connection, not only greatly reduces friction loss and vibration loss, makes transmission more stable.

[0003] Magnetic coupling is the important component of magnetic force pump, inner magnet rotor is the important component of magnetic coupling, after installing magnetic block, inner magnet rotor is ground, and the temperature resistance of magnetic block is only 400 DEG C, and the temperature of grinding point can reach 1000 DEG C or more, can cause demagnetization phenomenon or magnetic force weakening phenomenon.

[0004] At present, only magnetic detection equipment is used to detect each magnetic block, and the measurement efficiency is extremely low and not accurate. Therefore, a device for simply and efficiently detecting the magnetic strength of the magnetic block of the inner magnet rotor of the magnetic coupling is required. UTILITY MODEL CONTENTS

[0005] The utility model mainly solves the magnetic strength measurement of the magnetic block of the inner magnet rotor of the magnetic coupling of prior art, can only detect each magnetic block, and the technical problems of inconvenient measurement and extremely low measurement efficiency, a magnetic coupling inner magnet rotor magnetic detection device is provided, so that overall measurement can be convenient and improve measurement efficiency, and the magnetic strength of the magnetic block of the inner magnet rotor of different specifications can be measured.

[0006] The utility model provides a kind of magnetic coupling inner magnet rotor magnetic detection device, comprising: base, speed reducer unit, measurement unit and inner magnet rotor rotation unit;

[0007] The slide rail and bearing support are respectively arranged on the base;

[0008] The speed reducer unit includes a speed reducer and a shaft coupling;The speed reducer is arranged on the base;The output end of the speed reducer is connected with the shaft coupling through the shaft;

[0009] The inner magnet rotor rotation unit includes a drive shaft, a bearing and a coupling shaft;The drive shaft is fixed with the shaft through the shaft coupling;The drive shaft and the bearing are installed on the bearing support;The coupling shaft is connected with the drive shaft;The coupling shaft is used to install the measured inner magnet rotor;

[0010] The measurement unit includes a position sensor, a data collector and a detection device stator;

[0011] The position sensor comprises: a light shielding disc and a photoelectric switch; the photoelectric switch is fixedly installed outside the speed reducer; the light shielding disc is arranged at the end of the shaft and crosses the photoelectric switch; a notch is formed on the outer side of the light shielding disc;

[0012] The detection device stator comprises: a front cover, a rear cover, a stator and copper wires; the copper wires are wound on the stator; the two ends of the copper wires are connected with the input end of a data collector, and the output end of the data collector is connected with a computer; the front cover and the rear cover are installed at the two ends of the stator, and the bottom of the front cover and the rear cover is slidably connected with a slide rail.

[0013] Preferably, the photoelectric switch is fixedly installed outside the speed reducer through a support.

[0014] Preferably, the front cover and the rear cover are fastened through a cross lever coupling.

[0015] Preferably, the front cover and the rear cover are respectively provided with a sliding block, and the sliding block is slidably connected with the slide rail.

[0016] Preferably, one end of the base is provided with a boss, and the speed reducer is installed on the boss.

[0017] The magnetic detection device for the inner magnetic rotor of the magnetic coupling provided by the utility model rotates the coupling, the light shielding disc, the inner magnetic rotor rotating unit and the measured inner magnetic rotor simultaneously through the low-speed high-torque output of the speed reducer, and the detection device stator does not rotate simultaneously, so that the detection device stator is fixed, the state of the inner magnetic rotor rotation is formed, the state of the inner magnetic rotor magnetic induction line cutting device is simulated, the magnetic block magnetic intensity is changed into an electric signal through the copper wire connection data collector and is transmitted to the computer, the magnetic density waveform is displayed, the magnetic intensity of each magnetic block is obtained, and the intensity of the lower measurement is obtained.

[0018] The utility model adopts integral measurement, and the measurement is convenient, fast and accurate in display and judgment, the measurement efficiency is improved, the inner magnetic rotor can be quickly installed, measured and unloaded, different specifications of inner magnetic rotors only need to replace the corresponding specification detection device stator, so that the measurement can be realized, different specifications of magnetic couplings can be detected, and the application range is wide. ACCURATE

[0019] Figure 1 It is a sectional view of the magnetic detection device for the inner magnetic rotor of the magnetic coupling provided by the utility model;

[0020] Figure 2 It is a structural schematic view of the light shielding disc provided by the utility model;

[0021] Figure 3 It is a magnetic density waveform diagram obtained by the detection of the utility model.

[0022] Fig. 1 is a light shielding disc; 2 is a photoelectric switch; 3 is a speed reducer; 4 is a shaft; 5 is a coupling; 6 is a driving shaft; 7 is a bearing; 8 is a connecting shaft; 9 is a slide rail; 10 is a base; 11 is a measured inner magnetic rotor; 12 is a rear cover; 13 is a copper wire; 14 is a stator; 15 is a front cover; 16 is a bearing support. DETAILED DESCRIPTION

[0023] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the utility model will be further described in detail below in combination with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, not to limit the utility model. In addition, it needs to be explained that in order to facilitate the description, only the parts related to the utility model are shown in the drawings, not all the contents.

[0024] As shown in the magnetic coupling inner magnetic rotor magnetic detection device provided by the utility model embodiment, it comprises a base 10, a speed reducer unit, a measurement unit and an inner magnetic rotor rotating unit. Figure 1

[0025] The slide rail 9 is fixed on the base 10 by screws, and the slide rail 9 is arranged to facilitate the left and right movement of the stator of the detection device on the slide rail 9. One end of the base 10 is provided with a boss.

[0026] The speed reducer unit comprises a speed reducer 3 and a coupling 5. The speed reducer 3 is arranged on the base 10. Specifically, the speed reducer 3 is installed on the boss. The boss has a certain thickness, which is 76mm, and can lift the speed reducer 3, thereby increasing the center height of the stator of the detection device, so as to install and measure other larger specifications of the measured inner magnetic rotor 11. The output end of the speed reducer 3 is connected with the coupling 5 through the shaft 4. The speed reducer 3 realizes input high speed low torque output low speed high torque, and the speed ratio is 30:1, which changes the output speed to 100r / min, and the output torque is 20N.m. The output end of the speed reducer 3 can drive the shaft 4 and the coupling 5 to rotate at low speed and high torque.

[0027] The inner magnetic rotor rotating unit comprises a driving shaft 6, a bearing 7 and a connecting shaft 8. The driving shaft 6 is fixed with the shaft 4 through the coupling 5. The driving shaft 6 and the bearing 7 are installed on the bearing support 16. The connecting shaft 8 is connected with the driving shaft 6. The connecting shaft 8 is used for installing the measured inner magnetic rotor 11. Therefore, the measured inner magnetic rotor 11 can realize axial free rotation.

[0028] The measurement unit comprises a position sensor, a data collector and a detection device stator.

[0029] ​The position sensor includes a shielding disc 1 and a photoelectric switch 2. The photoelectric switch 2 is fixedly mounted outside the reducer 3. Specifically, the photoelectric switch 2 is fixedly mounted outside the reducer 3 by a bracket and does not rotate. The shielding disc 1 is located at the end of the shaft 4 and spans the photoelectric switch 2; the shielding disc 1 can rotate with the shaft 4. Figure 2 As shown, a 5° slot is opened on the outer side of the shielding disc 1. When the shielding disc 1 rotates one full circle across the photoelectric switch 2 to the slot position, the photoelectric switch 2 will be connected to mark the position, so as to measure and detect the position of the magnetic block.

[0030] The stator of the testing device includes a front cover 15, a rear cover 12, a stator 14, and copper wire 13. Copper wire 13 is wound around the stator 14 in 15 turns. Both ends of the copper wire 13 are connected to the input terminals of a data acquisition unit, and the output terminals of the data acquisition unit are connected to a computer. The front cover 15 and the rear cover 12 are installed at both ends of the stator 14 and are fastened together by connecting rods. The bottoms of the front cover 15 and the rear cover 12 are slidably connected to a slide rail 9. Specifically, the bottoms of the front cover 15 and the rear cover 12 are respectively equipped with sliders via screws. These sliders are slidably connected to the slide rail 9, allowing the front cover 15 and the rear cover 12 to move left and right via the slide rail 9. When installing the tested internal magnetic rotor 11, the stator of the testing device is moved to the rightmost end via the slide rail 9. After installing the tested internal magnetic rotor 11, the stator of the testing device is moved to the leftmost end so that the copper wire 13 of the stator coincides with the tested internal magnetic rotor 11, facilitating data measurement. The stator of the detection device of this utility model can slide, which facilitates the installation of the internal magnetic rotor 11 to be tested.

[0031] The data acquisition device is a USB-6001 model. Its input end is connected to both ends of a copper wire, and its output end is connected to a computer. Data acquisition begins after the tested internal magnetic rotor 11 rotates, and the magnetic flux density waveform is displayed after acquisition is complete (e.g., ...). Figure 3 As shown in the figure, the curves allow for a visual examination of the sampling data results and a determination of the outcome.

[0032] The magnetic detection device for the internal magnetic rotor of this utility model has a reducer 3 whose output end rotates together with the coupling 5 via the shaft 4, driving the drive shaft 6 and the connecting shaft 8 to rotate, thereby causing the internal magnetic rotor 11 under test to rotate at a low speed. Copper wire 13 is wound around the stator 14, and the front cover 15 and the rear cover 12 are installed on both sides of the stator 14 and fastened by the connecting rod. They are connected by screws and slide rails 9, allowing the stator of the detection device to move left and right. Both ends of the copper wire 13 are connected to the input end of the data acquisition device, and the output end of the data acquisition device is connected to the computer. The computer starts to collect data, analyzes and displays the magnetic flux density waveform, measures the magnetic strength of the magnetic block, and detects the magnetic blocks with weaker magnetic properties.

[0033] The method of using the device for measuring the magnetic intensity of the magnetic block of the magnetic rotor inside a magnetic coupler according to this utility model:

[0034] 1) move the detection device stator to the right end through the slide rail 9;

[0035] 2) install the measured inner magnetic rotor 11 on the coupling shaft 8;

[0036] 3) move the detection device stator back to the left end through the slide rail 9;

[0037] 4) turn on the motor power supply of the speed reducer 3, and rotate the whole device;

[0038] 5) start collecting data through the computer;

[0039] 6) after the data collection is completed, turn off the motor power supply of the speed reducer 3;

[0040] 7) display the magnetic density waveform by analyzing the data through the computer, measure the magnetic strength of the magnetic block, and detect the magnetic block with weaker magnetism.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently, without changing the essence of the corresponding technical solutions out of the scope of the technical solutions of the embodiments of the present application.

Claims

1. A magnetic detection device for a magnetic rotor in a magnetic coupling, characterized by The utility model relates to a kind of internal magnetic rotor rotation measurement device, including: Base (10), speed reducer unit, measurement unit and inner magnetic rotor rotation unit; The base (10) is respectively provided with slide rail (9) and bearing support (16); The speed reducer unit includes: speed reducer (3) and shaft coupling (5);The speed reducer (3) is arranged on base (10);The output end of the speed reducer (3) is connected with shaft coupling (5) by shaft (4); The inner magnetic rotor rotation unit includes: drive shaft (6), bearing (7) and coupling shaft (8);The drive shaft (6) is fixed with shaft (4) by shaft coupling (5);The drive shaft (6) and bearing (7) are installed on bearing support (16);The coupling shaft (8) is connected with drive shaft (6);The coupling shaft (8) is used to install the measured inner magnetic rotor (11); The measurement unit includes: position sensor, data collector and detection device stator; The position sensor includes: light shield disc (1) and photoelectric switch (2);The photoelectric switch (2) is fixedly installed outside speed reducer (3);The light shield disc (1) is arranged at the end of shaft (4), and the light shield disc (1) crosses photoelectric switch (2);A notch is opened outside the light shield disc (1); The detection device stator includes: front cover (15), rear cover (12), stator (14) and copper wire (13);The copper wire (13) is wound on the stator (14);Two ends of the copper wire (13) are connected with the input end of data collector, and the output end of the data collector is connected with computer;The front cover (15) and rear cover (12) are installed at both ends of stator (14), and the bottom of the front cover (15) and rear cover (12) is slidably connected with slide rail (9).

2. The magnetic coupling inner magnet rotor magnetic detection apparatus of claim 1, wherein, The photoelectric switch (2) is fixedly installed outside speed reducer (3) by support.

3. The magnetic coupling inner magnet rotor magnetic detection apparatus of claim 1, wherein, The front cover (15) and rear cover (12) are fastened by coupling.

4. The magnetic coupling inner magnet rotor magnetic detection apparatus of claim 3, wherein, The bottom of the front cover (15) and rear cover (12) is respectively provided with sliding block, and the sliding block is slidably connected with slide rail (9).

5. The magnetic coupling inner magnet rotor magnetic detection apparatus of claim 1, wherein, One end of the base (10) is provided with boss;The speed reducer (3) is installed on the boss.

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