A permanent magnet guide

A technology of guide rails and permanent magnets, applied in the directions of tracks, roads, buildings, etc., can solve the problems of inconvenient transportation and installation of guide rails, high content of rare earth elements, and high manufacturing costs

Active Publication Date: 2017-04-26
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like figure 2 As shown, according to the numerical calculation results, although most of the magnetic field on the side and bottom of the guide rail has been transferred to the working surface, there is still a strong magnetic field on the side and bottom of the guide rail, forming figure 2 The distribution of the magnetic field lines above the track is dense and the distribution of the asymmetrical magnetic field is sparse below, so the side and bottom of the guide rail still have a strong ability to absorb iron products such as brackets, which brings great inconvenience to the transportation and installation of the guide rail. Safe isolation using thicker non-magnetic material
In addition, due to the high content of rare earth elements in the permanent magnet guide rail in the prior art, the manufacturing cost is also high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1. Both the NdFeB permanent magnet group and the Barium Strontium Ferrite group are composed of 5 permanent magnets.

[0046] image 3 It is a structural schematic diagram of the permanent magnet guide rail in Embodiment 1 of the present invention. Such as image 3 As shown, in the permanent magnet guide rail in the first embodiment, N is 5, that is, the number of permanent magnets in the NdFeB permanent magnet group and the Barium Strontium Ferrite group is 5 pieces; for example, as image 3 As shown, the NdFeB permanent magnet group is composed of five NdFeB permanent magnets 21-25; the barium-strontium ferrite group is composed of five barium-strontium ferrites 31-35;

[0047] The magnetization directions of each permanent magnet in the NdFeB permanent magnet group and the Barium Strontium Ferrite group are arranged as follows:

[0048] The magnetization directions of the 1st to 5th permanent magnets from the left are: rightward, upward, leftward, downw...

Embodiment 2

[0052] Embodiment 2. Both the NdFeB permanent magnet group and the Barium Strontium Ferrite group are composed of 9 permanent magnets.

[0053] Figure 5 It is a structural schematic diagram of the permanent magnet guide rail in the second embodiment of the present invention. Such as Figure 5 As shown, in the permanent magnet guide rail in the second embodiment, N is 9, that is, the number of permanent magnets in the NdFeB permanent magnet group and the Barium Strontium Ferrite group is 9 pieces; for example, as Figure 5 As shown, the NdFeB permanent magnet group is composed of nine NdFeB permanent magnets 21-29; the barium strontium ferrite group is composed of nine barium strontium ferrites 31-39;

[0054] The magnetization directions of each permanent magnet in the NdFeB permanent magnet group and the Barium Strontium Ferrite group are arranged as follows:

[0055] The magnetization directions of the 1st to 9th permanent magnets from the left are: rightward, upward, le...

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Abstract

The invention discloses a permanent magnet guide rail. The permanent magnet guide rail includes: non-magnetic steel plates arranged on both sides, NdFeB permanent magnet groups and barium strontium ferrite groups arranged closely between the non-magnetic steel plates; The magnet group is arranged on the upper surface of the barium-strontium ferrite group; the NdFeB permanent magnet group is composed of N pieces of NdFeB permanent magnets, and the barium-strontium ferrite group is composed of N pieces of barium-strontium ferrite Composed of permanent magnets, the N is a natural number greater than or equal to 5; the magnetization direction of each permanent magnet in the NdFeB permanent magnet group and the Barium Strontium Ferrite group is in accordance with the maximum magnetic field intensity above the guide rail and the maximum magnetic field strength below the guide rail. The magnetic field strength is the smallest way to arrange. By using the permanent magnet guide rail provided by the present invention, the amount of rare earth elements in the permanent magnet guide rail and the cost of the permanent magnet guide rail can be reduced, and while a sufficiently strong magnetic field is generated above the permanent magnet guide rail, the side and bottom surface of the guide rail can be effectively reduced. magnetic field strength.

Description

technical field [0001] The invention relates to a high-temperature superconducting magnetic levitation technology, in particular to a permanent magnet guide rail. Background technique [0002] Compared with the electromagnetic levitation (EMS) and electrodynamic levitation (EDS) technologies based on electromagnetic attraction and repulsion, the high-temperature superconducting magnetic levitation technology relies on the magnetic flux pinning between the high-temperature superconductor bulk and the external magnetic field to achieve self-sustaining Stable suspension. This technology does not require active control and has a simple structure, so it has become one of the ideal choices for practical magnetic levitation technology. However, it has been 15 years since the world's first manned high-temperature superconducting maglev experimental vehicle came out in 2000. Although various basic researches have been fully carried out and achieved outstanding results, the cost of b...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): E01B25/32
CPCE01B25/32
Inventor邓自刚孙睿雪郑珺
OwnerSOUTHWEST JIAOTONG UNIV