A permanent magnet arrangement structure

Abstract

The invention discloses a permanent magnet arrangement structure, comprising a plurality of permanent magnet monomers of the same specification, at least one permanent magnet monomer is arranged in parallel to form a permanent magnet group, at least four permanent magnet groups are arranged in parallel along a straight line to form a permanent magnet column, the number of permanent magnet groups in the magnet column is an even number, the relative magnetic poles between two permanent magnet columns are opposite in polarity, and the magnetic pole arrangement rule of all permanent magnet groups on the same side in a single permanent magnet column is as follows: the magnetic pole polarity of the first permanent magnet group is an N pole, the magnetic pole polarity of the second permanent magnet group is an S pole, and starting from the third permanent magnet group, the magnetic pole polarity of the odd-numbered permanent magnet group is the same as the magnetic pole polarity of the previous permanent magnet group, and the magnetic pole polarity of the even-numbered permanent magnet group is opposite to the magnetic pole polarity of the previous permanent magnet group. The invention has a simple structure, uses fewer permanent magnet monomers, reduces the volume of a linear motor or an electromagnetic brake, reduces production costs, improves the utilization efficiency of permanent magnet monomers, and has strong practicality.

Description

[Technical field]

[0001] The invention relates to a permanent magnet arrangement structure. [Background Technology]

[0002] A permanent magnet arrangement structure is used in an existing linear motor or electromagnetic brake. The existing permanent magnet arrangement structure is generally composed of a plurality of permanent magnet monomers (magnets) of the same specifications arranged in parallel to form two parallel permanent magnet columns. The polarities of the permanent magnet monomer magnetic poles relative to each other between the two permanent magnet columns are opposite, and the polarities of all permanent magnet monomer magnetic poles on one side of one permanent magnet column are arranged alternately as N poles and S poles. The magnetic induction intensity of the magnetic field at the middle position between the two permanent magnet columns of the existing permanent magnet arrangement structure is relatively small. In order to enable the linear motor to generate a sufficiently large current when generating electricity or to enable the electromagnetic brake to produce an effective braking effect when braking, the existing permanent magnet arrangement structure needs to use a large number of permanent magnet monomers, thereby greatly increasing the volume of the linear motor or electromagnetic brake, resulting in high production costs and low utilization efficiency of the permanent magnet monomers.

[0003] The present invention is produced based on the above problems. [Summary of the invention]

[0004] The purpose of the present invention is to propose a novel permanent magnet arrangement structure in view of the deficiencies in the prior art. Compared with the existing permanent magnet arrangement structure, when using the same number of permanent magnet monomers, the magnetic field magnetic induction intensity at the middle position between two permanent magnet columns of the present invention is greater, and the change trend of the magnetic field magnetic induction intensity at the middle position between the two permanent magnet columns along the arrangement direction of the permanent magnet monomers is closer to a sine curve. The linear motor using the present invention can generate a larger current when generating electricity, and the electromagnetic brake using the present invention can generate a larger braking force and a better braking effect when braking.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A permanent magnet arrangement structure comprises a plurality of permanent magnet monomers of the same specification, at least one of the permanent magnet monomers is arranged in parallel to form a permanent magnet group, the magnetic poles of all the permanent magnet monomers in the permanent magnet group are arranged on the same side to form the N pole and the S pole of the permanent magnet group, at least four of the permanent magnet groups are arranged in parallel along a straight line to form a permanent magnet column, there are two permanent magnet columns and they are distributed in parallel, the number of permanent magnet groups in each permanent magnet column is an even number, there is a gap between the two permanent magnet columns and they are arranged opposite to each other on the left and right, the polarities of the magnetic poles opposite to each other between the two permanent magnet columns are opposite, and the magnetic poles of all the permanent magnet groups in a single permanent magnet column on the same side are arranged according to the following rules:

[0007] The polarity of the magnetic poles of the first permanent magnet group is an N pole, the polarity of the magnetic poles of the second permanent magnet group is an S pole, and starting from the third permanent magnet group, the polarity of the magnetic poles of the odd-numbered permanent magnet groups is the same as that of the previous permanent magnet group, and the polarity of the magnetic poles of the even-numbered permanent magnet groups is opposite to that of the previous permanent magnet group.

[0008] In the permanent magnet arrangement structure as described above, a mounting mechanism for fixedly connecting the two permanent magnet rows is provided between the two permanent magnet rows.

[0009] In the permanent magnet arrangement structure as described above, the mounting mechanism is made of magnetic conductive material.

[0010] In the permanent magnet arrangement structure as described above, the installation mechanism includes a bottom plate and two side plates perpendicular to the bottom plate, the two side plates are parallel and opposite to each other, and the two permanent magnets are arranged between the two side plates and fixed on the two side plates respectively.

[0011] In the permanent magnet arrangement structure as described above, the bottom plate and the two side plates form an integral structure formed in one piece.

[0012] In the permanent magnet arrangement structure as described above, the side plates are connected with a plurality of U-shaped baffles for fixing the permanent magnet monomers or the permanent magnet groups on the side plates.

[0013] In the permanent magnet arrangement structure as described above, the U-shaped baffle is made of non-magnetic material.

[0014] In the permanent magnet arrangement structure as described above, two adjacent permanent magnet monomers in the permanent magnet column are closely attached to each other, or there is a gap between two adjacent permanent magnet monomers in the permanent magnet column.

[0015] The beneficial effects of the present invention are:

[0016] 1. Compared with the existing permanent magnet arrangement structure, when using the same number of permanent magnet monomers, the magnetic field magnetic induction intensity at the middle position between the two permanent magnet rows of the present invention is greater, and the change trend of the magnetic field magnetic induction intensity at the middle position between the two permanent magnet rows along the arrangement direction of the permanent magnet monomers is closer to a sine curve. The linear motor of the present invention can generate greater power when generating electricity, and the electromagnetic brake of the present invention can generate greater braking force and better braking effect when braking. The present invention has a simple structure. When obtaining the same linear motor power generation or the same electromagnetic brake braking force, the present invention uses fewer permanent magnet monomers than the existing permanent magnet arrangement structure, which can greatly reduce the volume of the linear motor or the electromagnetic brake, greatly reduce the production cost, and greatly improve the utilization efficiency of the permanent magnet monomers, and has strong practicality.

[0017] 2. The mounting mechanism of the present invention is made of magnetic conductive material, and the permanent magnet monomer is adsorbed thereon, which can greatly enhance the magnetism of the permanent magnet monomer, and the structure is simpler and more practical.

[0018] 3. The U-shaped baffle of the present invention can well fix the permanent magnet monomer on the mounting mechanism, and the U-shaped baffle is made of non-magnetic conductive material, which can also well avoid distortion of the magnetic field between the two permanent magnet columns and weakening of the magnetic induction intensity. The structure is simpler and more practical. [Drawings]

[0019] Figure 1 is a schematic diagram of Embodiment 1 of the present invention;

[0020] Figure 2 is a schematic diagram of a second embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of Embodiment 3 of the present invention;

[0022] Figure 4 is a plan view of a fourth embodiment of the present invention;

[0023] Figure 5 yes Figure 4 Sectional view in the direction of arrow at AA;

[0024] Figure 6 It is a schematic diagram of prior art one;

[0025] Figure 7 It is a schematic diagram of the prior art 2;

[0026] Figure 8 is a schematic diagram of Embodiment 5 of the present invention;

[0027] Fig. 9 yes Figure 6 , Figure 7 , Figure 8 The changing trend diagram of magnetic field magnetic induction intensity. [Specific implementation method]

[0028] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0029] like Figure 1-5As shown, a permanent magnet arrangement structure includes a plurality of permanent magnet monomers 100 of the same specification, at least one of the permanent magnet monomers 100 is arranged in parallel to form a permanent magnet group 10, the magnetic poles of all permanent magnet monomers 100 of the permanent magnet group 10 with the same polarity are arranged on the same side to form the N pole and the S pole of the permanent magnet group 10 respectively, at least four of the permanent magnet groups 10 are arranged in parallel along a straight line to form a permanent magnet column 1, the magnetic poles at both ends of all permanent magnet groups 10 in the permanent magnet column 1 are arranged in parallel, there are two permanent magnet columns 1 and they are distributed in parallel, the number of permanent magnet groups 10 in each permanent magnet column 1 is an even number, there is a gap between the two permanent magnet columns 1 and they are arranged opposite to each other on the left and right, the polarities of the magnetic poles opposite to each other between the two permanent magnet columns 1 are opposite, and the magnetic pole arrangement rules of all permanent magnet groups 10 on the same side in a single permanent magnet column 1 are as follows:

[0030] The polarity of the magnetic poles of the first permanent magnet group 10 is an N pole, the polarity of the magnetic poles of the second permanent magnet group 10 is an S pole, and starting from the third permanent magnet group 10, the polarity of the magnetic poles of the odd-numbered permanent magnet group 10 is the same as the polarity of the magnetic poles of the previous permanent magnet group 10, and the polarity of the magnetic poles of the even-numbered permanent magnet group 10 is opposite to the polarity of the magnetic poles of the previous permanent magnet group 10.

[0031] The permanent magnet monomer 100 is a single permanent magnet. Figure 1 This is the first embodiment of the present invention. In this embodiment, each permanent magnet group 10 contains only one permanent magnet monomer 100, for example Figure 1 The left magnetic pole arrangement of all permanent magnet groups 10 in the right permanent magnet column 1 satisfies the above magnetic pole arrangement rule.

[0032] Figure 2 This is the second embodiment of the present invention. In this embodiment, each permanent magnet group 10 has only two permanent magnet monomers 100, and the same magnetic poles of the two permanent magnet monomers 100 in each permanent magnet group 10 are arranged on the same side, for example Figure 2 The left magnetic pole arrangement of all permanent magnet groups 10 in the right permanent magnet column 1 satisfies the above magnetic pole arrangement rule.

[0033] Figure 3 This is the third embodiment of the present invention. In this embodiment, each permanent magnet group 10 has only three permanent magnet monomers 100, and the same magnetic poles of the three permanent magnet monomers 100 in each permanent magnet group 10 are arranged on the same side, for example Figure 3 The left magnetic pole arrangement of all permanent magnet groups 10 in the right permanent magnet column 1 satisfies the above magnetic pole arrangement rule.

[0034] Compared with the existing permanent magnet arrangement structure, when the same number of permanent magnet monomers 100 are used, the magnetic field magnetic induction intensity at the middle position between the two permanent magnet columns 1 of the present invention is greater, and the change trend of the magnetic field magnetic induction intensity at the middle position between the two permanent magnet columns 1 along the arrangement direction of the permanent magnet monomers 100 is closer to a sine curve. The linear motor of the present invention can generate greater power when generating electricity, and the electromagnetic brake of the present invention can generate greater braking force and better braking effect when braking. The present invention has a simple structure. When obtaining the same linear motor power generation or the same electromagnetic brake braking force, the present invention uses fewer permanent magnet monomers 100 than the existing permanent magnet arrangement structure, which can greatly reduce the volume of the linear motor or the electromagnetic brake, greatly reduce the production cost, and well improve the utilization efficiency of the permanent magnet monomers 100, and has strong practicality.

[0035] A mounting mechanism 3 for fixedly connecting the two permanent magnet columns 1 is provided between the two permanent magnet columns 1 .

[0036] The mounting mechanism 3 is made of magnetic conductive material.

[0037] The mounting mechanism 3 includes a bottom plate 31 and two side plates 32 perpendicular to the bottom plate 31 . The two side plates 32 are parallel and opposite to each other. The two permanent magnet arrays 1 are disposed between the two side plates 32 and are fixed on the two side plates 32 , respectively.

[0038] The bottom plate 31 and the two side plates 32 form an integral structure.

[0039] Figure 4 This is the fourth embodiment of the present invention. In this embodiment, there is only one permanent magnet monomer 100 in each permanent magnet group 10, and the left magnetic pole arrangement of all permanent magnet groups 10 in the right permanent magnet column 1 meets the above magnetic pole arrangement rule, and the two permanent magnet columns 1 are adsorbed on the mounting mechanism 3. The mounting mechanism 3 of the present invention is a magnetic conductive material, and the permanent magnet monomer 100 is adsorbed thereon, which can greatly enhance the magnetism of the permanent magnet monomer 100, and the structure is simpler and more practical.

[0040] The side plate 32 is connected with a plurality of U-shaped baffles 4 for fixing the permanent magnet monomer 100 or the permanent magnet group 10 on the side plate 32 .

[0041] The U-shaped baffle 4 is made of non-magnetic material.

[0042] like Figure 4 and Figure 5As shown, the U-shaped baffle 4 can well fix the permanent magnet monomer 100 on the mounting mechanism 3, and the U-shaped baffle 4 can also fix the permanent magnet group 10 on the mounting plate 3. In addition, the U-shaped baffle 4 is made of non-magnetic conductive material, which can also well avoid distortion of the magnetic field between the two permanent magnet columns 1 and weakening of the magnetic induction intensity. The structure is simpler and more practical.

[0043] Two adjacent permanent magnet monomers 100 in the permanent magnet column 1 are closely attached to each other, or there is a gap between two adjacent permanent magnet monomers 100 in the permanent magnet column 1 .

[0044] Figure 6 It is one of the existing permanent magnet arrangement structures. In this structure, two rows of permanent magnets are opposite to each other. There are only three permanent magnets in each row. The left poles of the right row of permanent magnets are arranged in the order of "N pole-S pole-N pole". The change trend of the magnetic field magnetic induction intensity along the permanent magnet arrangement direction at the middle position between the two rows of permanent magnets is as follows Fig. 9 As shown in curve a. Fig. 9 The X-axis of the central coordinate system represents the middle position between the two rows of permanent magnets, and the Y-axis represents the magnitude of the magnetic field magnetic induction intensity.

[0045] Figure 7 This is the second existing permanent magnet arrangement structure. In this structure, two rows of permanent magnets are opposite to each other. There are only six permanent magnets in each row. The left poles of the right row of permanent magnets are arranged in the order of "N pole-S pole-N pole-S pole-N pole-S pole". The change trend of the magnetic field magnetic induction intensity along the permanent magnet arrangement direction at the middle position between the two rows of permanent magnets is as follows Fig. 9 As shown in curve b.

[0046] Figure 8 This is the fifth embodiment of the present invention. In this embodiment, there is only one permanent magnet monomer 100 in each permanent magnet group 10, and there are six permanent magnet groups 10 in each permanent magnet column 1. The arrangement of the left magnetic poles of all permanent magnet groups 10 in the right permanent magnet column 1 meets the above-mentioned magnetic pole arrangement rule. The variation trend of the magnetic field magnetic induction intensity along the arrangement direction of the permanent magnet monomer 100 at the middle position between the two permanent magnet columns 1 is as follows: Fig. 9 As shown in curve c.

[0047] exist Fig. 9 By comparing curve a, curve b, and curve c, it can be seen that compared with the existing permanent magnet arrangement structure, when using the same number of permanent magnets, the magnetic field magnetic induction intensity at the middle position between the two permanent magnet rows 1 of the present invention is greater, and the change of the magnetic field magnetic induction intensity is closer to a sine curve.

Claims

1. A permanent magnet arrangement structure, characterized in that: The invention comprises a plurality of permanent magnet monomers (100) of the same specification, at least one of the permanent magnet monomers (100) being arranged in parallel to form a permanent magnet group (10), the magnetic poles of all the permanent magnet monomers (100) of the same polarity being arranged on the same side to form the N pole and the S pole of the permanent magnet group (10), at least four of the permanent magnet groups (10) being arranged in parallel along a straight line to form a permanent magnet column (1), there being two permanent magnet columns (1) and being distributed in parallel, the number of the permanent magnet groups (10) in each permanent magnet column (1) being an even number, a gap being provided between the two permanent magnet columns (1) and being arranged opposite to each other on the left and right, the polarities of the magnetic poles opposite to each other between the two permanent magnet columns (1), and the arrangement rule of the magnetic poles on the same side of all the permanent magnet groups (10) in a single permanent magnet column (1) being as follows: The polarity of the magnetic poles of the first permanent magnet group (10) is an N pole, the polarity of the magnetic poles of the second permanent magnet group (10) is an S pole, and starting from the third permanent magnet group (10), the polarity of the magnetic poles of the odd-numbered permanent magnet groups (10) is the same as the polarity of the magnetic poles of the previous permanent magnet group (10), and the polarity of the magnetic poles of the even-numbered permanent magnet groups (10) is opposite to the polarity of the magnetic poles of the previous permanent magnet group (10).

2. A permanent magnet arrangement structure according to claim 1, characterized in that: A mounting mechanism (3) for fixedly connecting the two permanent magnet columns (1) is provided between the two permanent magnet columns (1).

3. A permanent magnet arrangement structure according to claim 2, characterized in that: The installation mechanism (3) is made of magnetic conductive material.

4. A permanent magnet arrangement structure according to claim 2, characterized in that: The mounting mechanism (3) comprises a bottom plate (31) and two side plates (32) perpendicular to the bottom plate (31); the two side plates (32) are parallel and opposite to each other; the two permanent magnet arrays (1) are arranged between the two side plates (32) and are respectively fixed on the two side plates (32).

5. A permanent magnet arrangement structure according to claim 4, characterized in that: The bottom plate (31) and the two side plates (32) form an integrally formed overall structure.

6. A permanent magnet arrangement structure according to claim 4, characterized in that: The side plate (32) is connected to a plurality of U-shaped baffles (4) for fixing the permanent magnet monomer (100) or the permanent magnet group (10) on the side plate (32).

7. A permanent magnet arrangement structure according to claim 6, characterized in that: The U-shaped baffle (4) is made of non-magnetic conductive material.

8. The permanent magnet arrangement structure according to claim 1, characterized in that: Two adjacent permanent magnet monomers (100) in the permanent magnet column (1) are closely attached to each other, or a gap exists between two adjacent permanent magnet monomers (100) in the permanent magnet column (1).

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