Electromagnet magnetic force detection device for maglev train

Abstract

The utility model discloses an electromagnet magnetic force detection device for a maglev train, which belongs to the technical field of maglev train detection, and comprises a guide rail, a mounting rack arranged on one side of the guide rail, an electromagnet body fixedly connected with the mounting rack, and a display instrument, a detection mechanism is mounted at the bottom of the mounting frame and comprises a fixing frame which is mounted at the bottom end of the mounting frame and is of a C-shaped structure, a pressure sensor mounted at the top of the fixing frame and guide columns which are arranged on the two sides of the pressure sensor, and the bottom ends of the guide columns are fixedly connected with the fixing frame; the magnetic force of the electromagnet body can be measured and calculated, the reading on the instrument is correspondingly displayed, and after whether the electromagnet body is within a reasonable range value or not is checked, if the electromagnet body exceeds the reasonable range value, the electromagnet body needs to be replaced so as to keep the running stability and safety of the maglev train.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic levitation train detection, and more specifically to an electromagnet magnetic force detection device for a magnetic levitation train. Background Art

[0002] A maglev train is a train that is propelled by magnetic levitation. It uses electromagnetic force to achieve non-contact suspension and guidance between the train and the track, and then uses the electromagnetic force generated by the linear motor to pull the train. Because the magnetic force of its track makes it suspended in the air, the friction is reduced. Unlike other trains that need to touch the ground when running, it is only subject to resistance from the air. The speed of high-speed maglev trains can reach more than 400 kilometers per hour, and the speed of medium and low-speed maglev trains is mostly 100-200 kilometers per hour.

[0003] Patent authorization number CN216332012U discloses a towed maglev train that cancels the linear motor traction method of medium and low-speed maglev trains and uses traction ropes instead, which greatly reduces the vehicle construction cost, simplifies the vehicle structure, reduces the later maintenance cost, and significantly improves the climbing ability of the maglev vehicle. It also has low noise, is environmentally friendly and pollution-free, making the ride more comfortable, the operation more stable, and the carrying capacity large.

[0004] In order to ensure the stability and safety of the operation of the maglev train, it is necessary to perform regular magnetic force detection on the magnets installed on the maglev train. Since the distance between the guide rail and the magnet installed on the maglev train is small, such as the distance between the guide rail and the magnet in patent authorization number CN216332012U, it is necessary to provide a device for magnetic force detection of the maglev train. Therefore, we propose an electromagnet magnetic force detection device for maglev train to solve the above-mentioned problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide an electromagnet magnetic force detection device for a maglev train, which can measure the magnetic force of the electromagnet body and then display the reading on the corresponding instrument to check whether the electromagnet body is within a reasonable range. If it exceeds the reasonable range, the electromagnet body needs to be replaced to maintain the smoothness and safety of the operation of the maglev train.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] An electromagnet magnetic force detection device for a maglev train comprises a guide rail, a mounting frame arranged on one side of the guide rail, an electromagnet body fixedly connected to the mounting frame, and a display instrument;

[0010] A detection mechanism is installed at the bottom of the mounting frame;

[0011] The detection mechanism includes a fixing frame installed in a C-shaped structure at the bottom end of the mounting frame, a pressure sensor installed on the top of the fixing frame, guide columns arranged on both sides of the pressure sensor and fixedly connected to the fixing frame at the bottom, a metal block slidably connected to the guide columns and abutting against the pressure sensor at the bottom, and a fixing screw symmetrically screwed to the bottom end of the fixing frame.

[0012] Furthermore, the inner top wall of the fixing frame abuts against the upper surface of the electromagnet body, and the top end of the fixing screw abuts against the bottom wall of the mounting frame.

[0013] Furthermore, a through hole is provided at the joint between the metal block and the guide pillar, and the inner diameter of the through hole is matched with the outer diameter of the guide pillar;

[0014] The material of the metal block is pig iron.

[0015] Furthermore, a rotating handle is installed at the bottom end of the fixing screw.

[0016] Furthermore, the length of the guide column is smaller than the distance between the electromagnet body and the guide rail.

[0017] Furthermore, the output end of the pressure sensor is electrically connected to the input end of the display instrument through a wire.

[0018] Furthermore, the fixing frame, guide column, set screw and rotating handle are all made of aluminum alloy.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] In this solution, the fixing frame is manually placed at the bottom of the mounting frame, and the fixing screw is rotated until the inner top wall of the mounting frame abuts against the electromagnet body. The electromagnet body is powered on to work under the action of the magnetic field to adsorb the metal block. The pressure generated during adsorption is transmitted to the pressure sensor, and then the pressure value is displayed in real time through the display instrument.

[0022] According to the magnetic surface attraction formula:

[0023] F=u0*(V*M / (4T*d^2)), where F represents the suction force of the magnet, u0 represents the vacuum magnetic permeability (approximately equal to 4t×10%-7Hm), V represents the magnetic energy volume (i.e. the volume of the electromagnet body), M represents the magnetic moment of the magnet, and d represents the distance between the attracted object and the surface of the magnet (i.e. the distance between the electromagnet body and the metal block 7). The magnetic force of the electromagnet body can be calculated, and then the reading on the corresponding display instrument can be checked to see whether the electromagnet body is within a reasonable range. If it exceeds the reasonable range, the electromagnet body needs to be replaced to maintain the stability and safety of the maglev train. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0025] Figure 2 This is a schematic diagram of the installation of the detection mechanism and the mounting frame of the utility model;

[0026] Figure 3 This is a schematic diagram of the detection mechanism structure of the utility model;

[0027] Figure 4 It is a schematic side view of the detection mechanism and the mounting frame of the utility model.

[0028] Description of the numbers in the figure:

[0029] 1. Guide rail; 2. Mounting frame; 3. Electromagnet body; 4. Fixing frame; 5. Guide column; 6. Pressure sensor; 7. Metal block; 8. Set screw; 9. Turning handle; 10. Display instrument. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0031] Example:

[0032] See also Figure 1-4 , an electromagnet magnetic force detection device for a maglev train, comprising a guide rail 1, a mounting frame 2 arranged on one side of the guide rail 1, an electromagnet body 3 fixedly connected to the mounting frame 2, and a display instrument 10;

[0033] A detection mechanism is installed at the bottom of the mounting frame 2;

[0034] The detection mechanism includes a fixing frame 4 installed at the bottom of the mounting frame 2 and arranged in a C-shaped structure, a pressure sensor 6 installed at the top of the fixing frame 4, guide pillars 5 arranged on both sides of the pressure sensor 6 and fixedly connected to the fixing frame 4 at the bottom, a metal block 7 slidably connected to the guide pillars 5 and abutting against the pressure sensor 6 at the bottom, and a fixing screw 8 symmetrically screwed to the bottom of the fixing frame 4;

[0035] It should be noted that when the electromagnet magnetic force detection device for maglev train is used, the metal block 7 is first installed on the guide column 5, the fixing frame 4 is manually placed on the bottom end of the mounting frame 2, and the tightening screw 8 is rotated until the inner top wall of the mounting frame 2 abuts against the electromagnet body 3, and the electromagnet body 3 is powered on to work and adsorbs the metal block 7 under the action of the magnetic field, and the pressure generated during adsorption is transmitted to the pressure sensor 6, and then the pressure value is displayed in real time through the display instrument 10;

[0036] According to the magnetic surface attraction formula:

[0037] F=u0*(V*M / (4T*d^2)), wherein F represents the attraction of the magnet, u0 represents the vacuum magnetic permeability (approximately equal to 4t×10%-7Hm), V represents the magnetic energy volume (i.e., the volume of the electromagnet body 3), M represents the magnetic moment of the magnet, and d represents the distance between the attracted object and the surface of the magnet (i.e., the distance between the electromagnet body 3 and the metal block 7), and the magnetic force of the electromagnet body 3 can be calculated; then, the reading on the corresponding display instrument 10 is checked to see whether the electromagnet body 3 is within a reasonable range. If it exceeds the reasonable range, the electromagnet body 3 needs to be replaced to maintain the stability and safety of the operation of the maglev train.

[0038] like Figure 3 , Figure 4 As shown, the inner top wall of the fixing frame 4 abuts against the upper surface of the electromagnet body 3, the top end of the fixing screw 8 abuts against the bottom wall of the mounting frame 2, and a rotating handle 9 is installed at the bottom end of the fixing screw 8;

[0039] It should be noted that the fixing frame 4 is manually placed on the bottom end of the mounting frame 2 and the tightening screw 8 is rotated by the turning handle 9 until the inner top wall of the mounting frame 2 abuts against the electromagnet body 3, so as to facilitate the installation and fixing of the fixing frame 4.

[0040] like Figure 3 As shown, a through hole is provided at the joint of the metal block 7 and the guide pillar 5, and the inner diameter of the through hole matches the outer diameter of the guide pillar 5, and the material of the metal block 7 is cast iron;

[0041] It should be noted that it plays a stable guiding role on the metal block 7, which is conducive to testing the suction force between the metal block 7 and the electromagnet body 3.

[0042] like Figure 4 As shown, the length of the guide post 5 is smaller than the distance between the electromagnet body 3 and the guide rail 1;

[0043] It should be noted that it is advantageous to install the detection mechanism at a position between the electromagnet body 3 and the guide rail 1 .

[0044] like Figure 2 As shown, the output end of the pressure sensor 6 is electrically connected to the input end of the display instrument 10 through a wire;

[0045] It should be noted that the electromagnet body 3 is powered to adsorb the metal block 7 under the action of the magnetic field, and the pressure generated during the adsorption is transmitted to the pressure sensor 6, and then the pressure value is displayed in real time through the display instrument 10.

[0046] like Figure 3 As shown, the fixing frame 4, the guide column 5, the set screw 8 and the rotating handle 9 are all made of aluminum alloy;

[0047] It should be noted that the overall weight of the detection mechanism is reduced, which facilitates installation, and the fixing frame 4, guide column 5, set screw 8 and rotating handle 9 are made of aluminum alloy and are non-magnetic, thereby ensuring accuracy during the test process.

[0048] When in use: firstly, install the metal block 7 on the guide column 5, manually place the fixing frame 4 on the bottom end of the mounting frame 2, and rotate the fixing screw 8 until the inner top wall of the mounting frame 2 abuts against the electromagnet body 3, and the electromagnet body 3 is powered on to adsorb the metal block 7 under the action of the magnetic field, and the pressure generated during adsorption is transmitted to the pressure sensor 6, and then the pressure value is displayed in real time through the display instrument 10;

[0049] According to the magnetic surface attraction formula:

[0050] F = u0*(V*M / (4T*d^2)), where F represents the attraction of the magnet, u0 represents the vacuum magnetic permeability (approximately equal to 4t×10%-7Hm), V represents the magnetic energy volume (i.e., the volume of the electromagnet body 3), M represents the magnetic moment of the magnet, and d represents the distance between the attracted object and the surface of the magnet (i.e., the distance between the electromagnet body 3 and the metal block 7), and the magnetic force of the electromagnet body 3 can be calculated; then the corresponding reading on the display instrument 10 is checked to see whether the electromagnet body 3 is within a reasonable range;

[0051] The model of the pressure sensor 6 is JLBU-1, and the model of the display instrument 10 is ZNHM-IIX.

[0052] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. An electromagnet magnetic force detection device for a maglev train, comprising a guide rail (1), a mounting frame (2) arranged on one side of the guide rail (1), and an electromagnet body (3) fixedly connected to the mounting frame (2), characterized in that: Also includes a display instrument (10); A detection mechanism is installed at the bottom of the mounting frame (2); The detection mechanism comprises a fixing frame (4) installed at the bottom end of the mounting frame (2) and arranged in a C-shaped structure, a pressure sensor (6) installed at the top of the fixing frame (4), guide pillars (5) arranged on both sides of the pressure sensor (6) and fixedly connected to the fixing frame (4) at the bottom end, a metal block (7) slidably connected to the guide pillars (5) and abutting against the pressure sensor (6) at the bottom, and a fixing screw (8) symmetrically screwed to the bottom end of the fixing frame (4).

2. The electromagnet magnetic force detection device for a maglev train according to claim 1, characterized in that: The inner top wall of the fixing frame (4) abuts against the upper surface of the electromagnet body (3), and the top end of the fixing screw (8) abuts against the bottom wall of the mounting frame (2).

3. The electromagnet magnetic force detection device for a maglev train according to claim 1, characterized in that: A through hole is provided at the joint between the metal block (7) and the guide pillar (5), and the inner diameter of the through hole is matched with the outer diameter of the guide pillar (5); The material of the metal block (7) is pig iron.

4. The electromagnet magnetic force detection device for a maglev train according to claim 1, characterized in that: A rotating handle (9) is installed at the bottom end of the fixing screw (8).

5. The electromagnet magnetic force detection device for a maglev train according to claim 1, characterized in that: The length of the guide column (5) is smaller than the distance between the electromagnet body (3) and the guide rail (1).

6. The electromagnet magnetic force detection device for a maglev train according to claim 1, characterized in that: The output end of the pressure sensor (6) is electrically connected to the input end of the display instrument (10) via a wire.

7. The electromagnet magnetic force detection device for a maglev train according to claim 4, characterized in that: The fixing frame (4), the guide column (5), the fixing screw (8) and the rotating handle (9) are all made of aluminum alloy.

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