Modularized splicable U-shaped permanent magnet linear motor stator

Abstract

The utility model discloses a modularized splicable U-shaped permanent magnet linear motor stator, which belongs to the technical field of electrical machinery and comprises a plurality of transversely spliced U-shaped components, a first limiting plate and a second limiting plate are respectively inserted into the outer sides of the U-shaped components at two ends, a double-end swallow-tail-shaped key is inserted into the inner side of each U-shaped component, and the double-end swallow-tail-shaped key is inserted into the outer side of each U-shaped component. And a permanent magnet is clamped between the double-end swallow-tail-shaped keys. According to the modularized splicable U-shaped permanent magnet linear motor stator, the length of the stator can be adjusted through modularized splicing, different movement stroke requirements can be met, the assembly efficiency is improved, and transportation and storage are convenient; through cooperation of the dovetail grooves and the dovetail strips, installation and pre-tightening of the permanent magnets are more convenient and reliable, positioning is more accurate, and meanwhile the permanent magnets are more suitable for high-temperature operation.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical machinery, in particular to a modular splicable U-shaped permanent magnet linear motor stator. Background Art

[0002] The U-shaped permanent magnet linear motor mainly includes two parts: a stator and a mover. Among them, the permanent magnets on both sides of the stator generate a permanent magnetic field, and the coil on the mover generates an excitation magnetic field after being energized. The two interact at the air gap to generate a thrust, so that the mover drives the load to complete a linear motion at a certain speed and stroke.

[0003] In the prior art, compared with the rotary motor that can generate a continuous magnetic field within a circular range, the maximum stroke of the mover of the linear motor can only be limited to the range allowed by the length of the stator for reciprocating motion. Therefore, when the length of the stator of the linear motor is determined, its maximum stroke is fixed and non-adjustable, which greatly limits its application range.

[0004] At the same time, since most of the permanent magnets on the stator are fixedly installed on the back yoke by surface bonding, the magnetic force between the permanent magnets makes their positioning and installation more difficult. In addition, the adhesive is greatly affected by temperature, and the permanent magnets are prone to fall off at high temperatures. Summary of the Invention

[0005] The purpose of the utility model is to provide a modular splicable U-shaped permanent magnet linear motor stator, which can adjust the length of the stator by modular splicing, can adapt to different motion stroke requirements, improve the assembly efficiency, facilitate transportation and storage, make the installation and pre-tightening of the permanent magnet more convenient and reliable through the cooperation of the dovetail groove and the dovetail bar, the positioning is more accurate, and it is more suitable for high-temperature operation.

[0006] To achieve the above purpose, the utility model provides a modular splicable U-shaped permanent magnet linear motor stator, which includes a plurality of laterally spliced U-shaped components. The outer sides of the U-shaped components at both ends are respectively inserted with a first limiting plate and a second limiting plate, and a double-headed dovetail key is inserted inside the U-shaped components, and a permanent magnet is clamped between the double-headed dovetail keys.

[0007] Preferably, the U-shaped component includes a base at the bottom, and back yokes are mirror-parallel inserted at both ends of the base. The width of the back yoke is the same as the width of the base, and the number of back yokes is twice the number of bases.

[0008] Preferably, the front and back sides of the back yoke are respectively provided with a first dovetail tooth and a first dovetail groove, and adjacent U-shaped components are inserted with each other through the matching of the first dovetail tooth and the first dovetail groove on the adjacent back yokes.

[0009] Preferably, fifth dovetail grooves matching with the first dovetail teeth are formed on both sides of the first limiting plate, and both sides of the first limiting plate are sleeved on the first dovetail teeth of the back yoke;

[0010] Third dovetail teeth matching with the first dovetail grooves are formed on both sides of the second limiting plate, and both sides of the second limiting plate are inserted into the first dovetail grooves of the back yoke.

[0011] Preferably, second dovetail teeth are arranged at the bottom of the back yoke, and a second dovetail groove matching with the double-headed dovetail key is formed inside the back yoke. One end of the double-headed dovetail key is inserted into the second dovetail groove;

[0012] Third dovetail grooves and fourth dovetail grooves matching with the second dovetail teeth are respectively formed at both ends of the base, and the back yokes on both sides are respectively inserted into the third dovetail groove and the fourth dovetail groove through the second dovetail teeth.

[0013] Preferably, chamfering processing matching with the double-headed dovetail key is adopted at both ends of the permanent magnet.

[0014] Preferably, the double-headed dovetail keys are inserted into the second dovetail grooves inside each back yoke, and the permanent magnet adopts a segmented structure.

[0015] Therefore, the modular splicable U-shaped permanent magnet linear motor stator of the present utility model can adjust the length of the stator through modular splicing, can adapt to different motion stroke requirements, improve the assembly efficiency, facilitate transportation and storage, and make the installation and pre-tightening of the permanent magnet more convenient and reliable, the positioning more accurate, and at the same time more suitable for high-temperature operation.

[0016] The technical solution of the present utility model will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of an embodiment of a modular splicable U-shaped permanent magnet linear motor stator of the present utility model;

[0018] Figure 2 is a schematic diagram of the structure of the back yoke of an embodiment of a modular splicable U-shaped permanent magnet linear motor stator of the present utility model;

[0019] Figure 3 is a schematic diagram of the structure of the base of an embodiment of a modular splicable U-shaped permanent magnet linear motor stator of the present utility model;

[0020] Figure 4It is a schematic structural diagram of the U-shaped component of the modular splicable U-shaped permanent magnet linear motor stator according to an embodiment of the present utility model;

[0021] Figure 5 It is a schematic structural diagram of the double-headed dovetail key of the modular splicable U-shaped permanent magnet linear motor stator according to an embodiment of the present utility model;

[0022] Figure 6 It is a schematic structural diagram of the first limiting plate of the modular splicable U-shaped permanent magnet linear motor stator according to an embodiment of the present utility model;

[0023] Figure 7 It is a schematic structural diagram of the second limiting plate of the modular splicable U-shaped permanent magnet linear motor stator according to an embodiment of the present utility model;

[0024] Figure 8 It is a schematic structural diagram of the permanent magnet of the modular splicable U-shaped permanent magnet linear motor stator according to an embodiment of the present utility model.

[0025] Reference numerals

[0026] 1, back yoke; 2, first limiting plate; 3, double-headed dovetail key; 4, permanent magnet; 5, second limiting plate; 6, base; 101, first dovetail tooth; 102, second dovetail tooth; 103, first dovetail groove; 104, second dovetail groove; 201, fifth dovetail groove; 501, third dovetail tooth; 601, third dovetail groove; 602, fourth dovetail groove. Detailed implementation manners

[0027] The technical solutions of the present utility model will be further described below with reference to the drawings and embodiments.

[0028] Unless otherwise defined, the technical terms or scientific terms used in the present utility model should have the ordinary meanings understood by those of ordinary skill in the field to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0029] Embodiment 1

[0030] AsFigure 1 As shown in the figure, the utility model provides a modular splicable U-shaped permanent magnet linear motor stator, which comprises a plurality of laterally spliced U-shaped components. The outer sides of the U-shaped components at both ends are respectively inserted with a first limiting plate 2 and a second limiting plate 5. A double-headed dovetail key 3 is inserted inside the U-shaped components, and a permanent magnet 4 is clamped between the double-headed dovetail keys 3.

[0031] The U-shaped component includes a base 6 at the bottom, and the base 6 is processed from a non-magnetic material. The two ends of the base 6 are mirror-image parallel inserted with back yokes 1. The width of the back yoke 1 is the same as the width of the base 6, and the number of the back yokes 1 is twice the number of the base 6.

[0032] On the front and back sides of each back yoke 1, a first dovetail tooth 101 and a first dovetail groove 103 are respectively arranged. The adjacent U-shaped components are spliced with each other by the matching of the first dovetail teeth 101 and the first dovetail grooves 103 on the two adjacent back yokes 1 before and after, so as to realize the splicing between different U-shaped components. In the actual use process, the length of the stator can be adjusted by adjusting the number of the U-shaped components used.

[0033] In this embodiment, two second dovetail teeth 102 are arranged at the bottom of each back yoke 1. Two third dovetail grooves 601 and fourth dovetail grooves 602 which are matched with the second dovetail teeth 102 are respectively arranged at the two ends of the base 6. The back yokes 1 on both sides are respectively inserted into the third dovetail grooves 601 and the fourth dovetail grooves 602 through the second dovetail teeth 102 to complete the splicing of the back yoke 1 and the base 6.

[0034] A second dovetail groove 104 which is matched with the double-headed dovetail key 3 is arranged inside the back yoke 1, and one end of the double-headed dovetail key 3 is inserted into the second dovetail groove 104. In this embodiment, a double-headed dovetail key 3 is inserted into the second dovetail groove 104 inside each back yoke 1. The permanent magnet 4 adopts a segmented structure, and a plurality of permanent magnets 4 are respectively clamped between two adjacent double-headed dovetail keys 3, which not only facilitates the installation of the permanent magnet 4, but also can reduce the eddy current loss of the U-shaped permanent magnet linear motor. The polarities of the permanent magnets 4 located in the same slot and the opposite slots are the same, and the polarities of the permanent magnets 4 in two adjacent slots on the same side are opposite. Both ends of the permanent magnet 4 are chamfered to match the double-headed dovetail key 3, and the chamfered part abuts against the double-headed dovetail key 3, which can provide limit and pre-tightening for the permanent magnet 4 and prevent the permanent magnet 4 from falling off easily during use.

[0035] On both sides of the first limiting plate 2, fifth dovetail grooves 201 matching the first dovetail teeth 101 are provided, and both sides of the first limiting plate 2 are sleeved on the first dovetail teeth 101 of the back yoke 1. On both sides of the second limiting plate 5, third dovetail teeth 501 matching the first dovetail grooves 103 are provided, and both sides of the second limiting plate 5 are inserted into the first dovetail grooves 103 of the back yoke 1. The first limiting plate 2 and the second limiting plate 5 can provide lateral support for the stator, making the overall structure more firm.

[0036] Therefore, the above-mentioned modular splicable U-shaped permanent magnet linear motor stator of the present invention can adjust the length of the stator through modular splicing, can adapt to different motion stroke requirements, improve the assembly efficiency, facilitate transportation and storage, and make the installation and pre-tightening of the permanent magnet more convenient and reliable through the cooperation of the dovetail groove and the dovetail bar, with more accurate positioning, and is more suitable for high-temperature operation.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A modular and spliceable U-shaped permanent magnet linear motor stator, characterized in that: It includes several horizontally spliced U-shaped components. A first limiting plate and a second limiting plate are respectively inserted on the outer sides of the U-shaped components at both ends. A double-headed dovetail key is inserted inside the U-shaped components, and a permanent magnet is clamped between the double-headed dovetail keys.

2. The modular splicable U-shaped permanent magnet linear motor stator according to claim 1, wherein: The U-shaped component includes a base at the bottom. Yokes are inserted in a mirror-image parallel manner at both ends of the base. The width of the yoke is the same as the width of the base, and the number of yokes is twice the number of bases.

3. The modular spliceable U-shaped permanent magnet linear motor stator according to claim 2, wherein: First dovetail teeth and first dovetail grooves are respectively arranged on the front and rear sides of the yoke. Adjacent U-shaped components are inserted into each other through the matching of the first dovetail teeth and the first dovetail grooves on the adjacent yokes.

4. The modular splicable U-shaped permanent magnet linear motor stator according to claim 3, characterized in that: Fifth dovetail grooves matching the first dovetail teeth are formed on both sides of the first limiting plate, and both sides of the first limiting plate are sleeved on the first dovetail teeth of the yoke. Third dovetail teeth matching the first dovetail grooves are formed on both sides of the second limiting plate, and both sides of the second limiting plate are inserted into the first dovetail grooves of the yoke.

5. A modular spliceable U-shaped permanent magnet linear motor stator according to claim 2, characterized in that: Second dovetail teeth are arranged at the bottom of the yoke, and a second dovetail groove matching the double-headed dovetail key is formed inside the yoke. One end of the double-headed dovetail key is inserted into the second dovetail groove. Third dovetail grooves and fourth dovetail grooves matching the second dovetail teeth are respectively formed at both ends of the base. The yokes on both sides are respectively inserted into the third dovetail groove and the fourth dovetail groove through the second dovetail teeth.

6. The modular splicable U-shaped permanent magnet linear motor stator according to claim 5, characterized in that: Both ends of the permanent magnet are chamfered to match the double-headed dovetail key.

7. A modular spliceable U-shaped permanent magnet linear motor stator according to claim 5, characterized in that: The double-headed dovetail key is inserted into the second dovetail groove inside each yoke, and the permanent magnet adopts a segmented structure.

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