CN217935416U - Bilateral linear switch reluctance motor - Google Patents

Abstract

The utility model belongs to the technical field of the motor, a bilateral linear switch reluctance motor is disclosed, this bilateral linear switch reluctance motor includes the base, two stator fixing bases, two stator module, active cell fixing base and a plurality of active cell, two stator fixing bases are along the width direction interval and the fixed setting in the base of base, two stator module are fixed respectively and are set up in two stator fixing bases, and two stator module all are located between two stator fixing bases, the active cell fixing base slides along the length direction of base and sets up in the base, a plurality of active cells along the length direction interval and the fixed setting in the active cell fixing base of base, a plurality of active cells all are located between two stator module. This bilateral linear switch reluctance machine can reduce stator module's deformation, improves bilateral linear switch reluctance machine's motion precision, prolongs bilateral linear switch reluctance machine's life.

Description

Bilateral linear switch reluctance motor

Technical Field

The utility model relates to the technical field of electric machines, especially, relate to a bilateral linear switch reluctance motor.

Background

The linear switch reluctance motor has no mechanical transmission structure and generally comprises a stator, a rotor iron core and a winding, wherein the winding is wound on the rotor iron core to form a rotor, the stator is fixed, and after the winding is electrified, magnetic pull force is generated to make the rotor linearly move relative to the stator due to the minimum reluctance principle. Linear switch reluctance motor among the prior art, the lower extreme of stator is direct and base fixed connection, and the upper end is unsettled, and in linear switch reluctance motor working process, because the stator receives great normal force, the normal force can lead to the structure of stator to produce deformation, can influence linear switch reluctance motor's motion accuracy, makes active cell and stator contact each other even, shortens the life of motor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bilateral linear switch reluctance machine to solve among the prior art lower extreme of stator direct and base fixed connection, the upper end is unsettled, receives the normal force influence probably to lead to the structure of stator to produce the problem of deformation.

To achieve the purpose, the utility model adopts the following technical proposal:

a double-sided linear switched reluctance machine comprising:

a base;

the two stator fixing seats are spaced along the width direction of the base and fixedly arranged on the base;

the two stator assemblies are respectively and fixedly arranged on the two stator fixing seats, and the two stator assemblies are positioned between the two stator fixing seats;

the rotor fixing seat is arranged on the base in a sliding mode along the length direction of the base;

the plurality of rotors are arranged on the rotor fixing seat at intervals along the length direction of the base and are fixedly arranged between the two stator assemblies.

As an optimal scheme of the bilateral linear switched reluctance motor, the stator fixing seat is provided with an accommodating groove, and the stator assembly is located in the accommodating groove.

As an optimal scheme of the above bilateral linear switched reluctance motor, the stator assembly includes a plurality of stators, and the plurality of stators are sequentially and fixedly connected to the stator fixing base.

As a preferable scheme of the above-mentioned bilateral linear switched reluctance motor, the stator includes a stator yoke and a plurality of stator teeth distributed at intervals, the plurality of stator teeth are all fixedly disposed on one side of the stator yoke close to the mover, the mover includes a mover yoke, a plurality of mover teeth distributed at intervals and coils, the mover yoke is respectively provided with a plurality of the mover teeth towards both sides of two of the stator assemblies, the coils are wound on the mover yoke, a motor air gap is formed between the stator teeth and the mover teeth, the width of the mover teeth is equal to the width of the stator teeth, the distance between two adjacent stator teeth and the distance between two adjacent mover teeth are both a pole pitch L, and when one of the mover teeth is aligned with the stator teeth, the distance between the mover teeth and the stator teeth of the other mover is 2/3L.

As a preferable scheme of the double-sided linear switched reluctance motor, the number of the rotor teeth on one side of the rotor yoke is n, n is a multiple of 2, and n is greater than or equal to 4.

As a preferable scheme of the above double-sided linear switched reluctance motor, the width of the stator teeth and the width of the rotor teeth are both d, and the ratio of d to L is 0.45.

As a preferable mode of the double-sided linear switched reluctance motor, the thickness h of the stator yoke is 20mm.

As a preferable scheme of the above two-sided linear switched reluctance motor, the mover fixing base includes a mover platform and a platform cover fixedly disposed on the mover platform, the mover platform is slidably disposed on the base, the mover is located between the mover platform and the platform cover, and both the mover platform and the platform cover are fixedly connected to the mover.

As a preferred scheme of the above bilateral linear switched reluctance motor, the base is provided with a slide rail, and the mover platform is provided with a slide block, which is slidably disposed on the slide rail.

As a preferred scheme of the above double-sided linear switched reluctance motor, the base, the stator fixing base, the rotor platform and the platform cover are all made of aluminum alloy materials.

The utility model has the advantages that:

the utility model provides a bilateral linear switch reluctance machine, this bilateral linear switch reluctance machine because the active cell is located between two stator module, a pair of normal force opposite direction that the active cell received can offset each other, can prevent that the active cell from receiving the normal force influence and producing deformation. Although a pair of normal force that the active cell received can offset, the stator module of active cell both sides still can receive the normal force influence, through with two stator fixing bases along the width direction interval of base and fixed set up in the base, stator module is fixed to be set up in the stator fixing base, and two stator module all are located between two stator fixing bases, the stator fixing base can support stator module along the width direction of base, can reduce stator module's deformation, improve bilateral linear switch reluctance motor's motion precision, prolong bilateral linear switch reluctance motor's life.

Drawings

Fig. 1 is a schematic structural diagram of a double-sided linear switched reluctance motor according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating an assembly of a mover fixing base and a mover in a double-sided linear switched reluctance motor according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a mover and a stator along a first view angle in a double-sided linear switched reluctance motor according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a mover and a stator of a double-sided linear switched reluctance motor according to a second view angle according to an embodiment of the present invention;

fig. 5 is an enlarged view at X in fig. 4.

In the figure:

1. a base; 11. a slide rail;

2. a stator fixing seat; 21. accommodating grooves; 22. a threaded hole;

3. a stator; 31. a stator yoke; 32. stator teeth;

4. a rotor fixing seat; 41. a mover platform; 42. a platform cover; 411. a slider;

5. a mover; 51. a mover yoke; 52. the rotor teeth; 53. and a coil.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

The utility model provides a bilateral linear switch reluctance machine, as shown in fig. 1-5, this bilateral linear switch reluctance machine includes base 1, two stator fixing base 2, two stator module, active cell fixing base 4 and a plurality of active cell 5, two stator fixing base 2 are along base 1's width direction interval and fixed the setting in base 1, two stator module are fixed respectively and are set up in two stator fixing base 2, and two stator module all are located between two stator fixing base 2, active cell fixing base 4 slides along base 1's length direction and sets up in base 1, a plurality of active cell 5 are along base 1's length direction interval and fixed the setting in active cell fixing base 4, a plurality of active cell 5 all are located between two stator module.

This bilateral linear switch reluctance motor because runner 5 is located between two stator module, a pair of normal force opposite direction that runner 5 received can offset each other, can prevent that runner 5 from receiving the normal force influence and producing deformation. Although a pair of normal force that active cell 5 received can offset, the stator module of active cell 5 both sides still can receive the normal force influence, through 2 along the width direction interval of base 1 with two stator fixing base and fixed the setting in base 1, stator module is fixed to be set up in stator fixing base 2, and two stator module all are located between two stator fixing base 2, stator fixing base 2 can support stator module along the width direction of base 1, can reduce stator module's deformation, improve bilateral linear switch reluctance motor's motion precision, prolong bilateral linear switch reluctance motor's life.

Alternatively, as shown in fig. 1, the stator fixing seat 2 is provided with a receiving groove 21, and the stator assembly is located in the receiving groove 21. Stator fixing base 2 is equipped with holding tank 21 towards one side of active cell 5, and stator module inlays and locates behind holding tank 21, passes through bolted connection with stator fixing base 2 again. Stator fixing base 2 and stator module's up end, lower terminal surface and keep away from the equal contact of one side of active cell 5, can improve stator module and stator fixing base 2's joint strength, and can improve stator fixing base 2 and to stator module's supporting role, reduce stator module's deformation. Optionally, the stator assembly includes a plurality of stators 3, and the plurality of stators 3 are sequentially and fixedly connected to the stator fixing base 2. Stator module is formed by the concatenation of a plurality of stators 3, can increase stator module's length through the quantity that increases stator 3 to realize the linear motion of bilateral linear switch reluctance machine's long stroke. In this embodiment, the number of the stators 3 is 3, and the total length of the stator assembly is 1.5m.

Alternatively, as shown in fig. 3 to 5, the stator 3 includes a stator yoke 31 and a plurality of stator teeth 32 distributed at intervals, the plurality of stator teeth 32 are all fixedly disposed on one side of the stator yoke 31 close to the mover 5, the mover 5 includes a mover yoke 51, a plurality of mover teeth 52 distributed at intervals, and coils 53, the mover yoke 51 is respectively provided with a plurality of mover teeth 52 facing two sides of two stator assemblies, the coils 53 are wound on the mover yoke 51, a motor air gap is formed between the stator teeth 32 and the mover teeth 52, the width of the mover teeth 52 is equal to the width of the stator teeth 32, the distance between two adjacent stator teeth 32 and the distance between two adjacent mover teeth 52 are both a polar distance L, and when the mover teeth 52 of one mover 5 are aligned with the stator teeth 32, the distance between the stator teeth 32 and the mover teeth 52 of the other mover 5 is both 2/3L. The number of the movers 5 is at least two, in the embodiment, the number of the movers 5 is 3, three movers 5 are defined as a phase, a phase B and a phase C respectively, each mover 5 is provided with one coil 53, and the coil 53 is wound on the mover yoke 51, so that the possibility that the end part of the coil 53 is damaged when the double-side linear switch reluctance motor operates is reduced, and the reliability of the end part of the coil 53 is enhanced. When the mover teeth 52 of one mover 5 are aligned with the stator teeth 32, the distance between the mover teeth 52 of the other mover 5 and the stator teeth 32 is 2/3L, which can ensure that the double-sided linear switched reluctance motor of the mover 5 can move in two opposite directions at any position. As shown in fig. 4, when the mover teeth 52 of the phase B are completely aligned with the stator teeth 32, the mover teeth 52 of the phase a and the stator teeth 52 of the phase C are both 2/3L away from the stator teeth 32, and when the phase a is electrified, the coil 53 of the phase a generates magnetic flux, the magnetic flux forms a closed loop among the mover yoke 51, the mover teeth 52, the motor air gap, the stator teeth 32 and the stator yoke 31, and due to the principle of minimum reluctance, the magnetic flux is always closed along the path with minimum reluctance, so that magnetic pulling force is generated to act on the phase a, so that the phase a moves to the right; similarly, when the C phase is electrified, the generated magnetic flux also forms a closed loop in the mover 5 and the stator 3, and magnetic pull force is generated to act on the C phase, so that the C phase moves to the left.

Moreover, the rotor 5 of the bilateral linear switch reluctance motor does not comprise a permanent magnet, so that a groove for accommodating the permanent magnet is not needed, the rotor 5 is simple and firm in structure, suitable for various severe working conditions and low in cost, force pulsation is low, the non-linear degree of a magnetic field is lower compared with a permanent magnet auxiliary type linear switch reluctance motor, and the bilateral linear switch reluctance motor is more suitable for a high-precision system.

Alternatively, the stator 3 and the mover 5 are stacked by using silicon steel sheets. The structure of the silicon steel sheet is a whole, the structures on two sides of the rotor yoke part 51 are symmetrical, so that the structure of the rotor 5 is more stable and reliable, the service life is long, and the high-speed and high-precision motion of the bilateral linear switch reluctance motor is facilitated.

Alternatively, a plurality of threaded holes 22 are formed in the stator yoke 31 at intervals, and bolts are sequentially screwed with the threaded holes 22 and the stator 3, so that the stator 3 is fixed on the stator fixing seat 2. In order to ensure that the stator 3 is well fixed on the stator fixing base 2 to restrain the stator 3 from deforming, when the mover 5 is at any position, at least one threaded hole 22 is aligned with the mover 5 along the width direction of the base 1. Alternatively, the threaded holes 22 are M6 threaded holes 22, the distance between the center of each threaded hole 22 and one side surface of the stator 3 away from the mover 5 is 7mm, and the distance between two adjacent threaded holes 22 is 3 times the pole pitch L. Optionally, the pole pitch L is 7.8mm and the height e of the motor air gap is 0.3mm.

Optionally, the thickness h of the stator yoke 31 is 20mm. Thickening stator yoke portion 31, can further effectively restrain stator 3's deformation to improve bilateral linear switch reluctance machine's motion precision, prolong bilateral linear switch reluctance machine's life. The stator 3 of the bilateral linear switched reluctance motor obtained by the finite element method has the deformation amount which is at most 1.03 percent of the height of the air gap of the motor and is very small, and the reliability of the bilateral linear switched reluctance motor is verified.

Optionally, the number of the mover teeth 52 on the mover yoke 51 side is n, n is a multiple of 2, and n ≧ 4. The increased number of rotor teeth 52 increases the thrust of the double-sided linear switched reluctance motor. The number of the mover teeth 52 is determined as the case may be, and in the present embodiment, the number of the mover teeth 52 on the mover yoke 51 side is 6.

Optionally, the width of the stator teeth 32 and the width of the mover teeth 52 are both d, and the ratio of d to L is 0.45. The thrust of the bilateral linear switched reluctance motor is also related to the ratio of d to L, in the embodiment, the ratio of d to L is 0.45, through finite element method analysis, the ratio of d to L is 0.45, the thrust of the bilateral linear switched reluctance motor is the maximum, and the magnetic flux density supersaturation phenomenon does not exist in the rotor teeth 52 and the stator teeth 32.

Alternatively, as shown in fig. 2, the mover fixing base 4 includes a mover platform 41 and a platform cover 42 fixedly disposed on the mover platform 41, the mover platform 41 is slidably disposed on the base 1, the mover 5 is located between the mover platform 41 and the platform cover 42, and both the mover platform 41 and the platform cover 42 are fixedly connected to the mover 5. Due to the influence of the processing precision, the situation that the air gaps of the motors on the two sides are not equal may exist, so that an unbalanced pair of normal forces acts on the rotor 5, the rotor platform 41 and the platform cover 42 can be stably connected with the rotor 5, the rotor 5 can stably move, the deformation and the eccentricity of the rotor 5 can be reduced, the motion precision of the bilateral linear switch reluctance motor is improved, and the service life of the bilateral linear switch reluctance motor is prolonged. It is understood that the coil 53 of the mover 5 may be led out from above the platform cover 42.

Alternatively, as shown in fig. 1 and fig. 2, the base 1 is provided with a slide rail 11, the mover platform 41 is provided with a slider 411, and the slider 411 is slidably disposed on the slide rail 11. The bottom of the rotor platform 41 is provided with a sliding block 411, and the sliding block 411 is matched with a sliding rail 11 on the base 1, so that the motion precision of the bilateral linear switch reluctance motor is higher, the friction is small, and the noise is small.

Alternatively, the base 1, the stator fixing base 2, the mover platform 41 and the platform cover 42 are all made of an aluminum alloy material.

Magnetic flux decoupling needs to be guaranteed between adjacent rotors 5 of the bilateral linear switched reluctance motor, and if the coupling effect between the rotors 5 can be ignored, a decoupling control algorithm does not need to be adopted, so that the control method is simpler. Analyzing whether two adjacent phases are decoupled by a finite element method: the motor air gap flux density between the rotor 5 and the stator 3 of the excitation phase is more than 100 times of the motor air gap flux density between the rotor 5 and the stator 3 of the adjacent phase.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A double-sided linear switched reluctance machine comprising:

a base (1);

the two stator fixing seats (2) are arranged at intervals along the width direction of the base (1) and are fixedly arranged on the base (1);

the two stator assemblies are respectively and fixedly arranged on the two stator fixing seats (2), and are positioned between the two stator fixing seats (2);

the rotor fixing seat (4) is arranged on the base (1) in a sliding mode along the length direction of the base (1);

the rotor fixing seat comprises a plurality of rotors (5), wherein the rotors (5) are arranged at intervals along the length direction of the base (1) and fixedly arranged on the rotor fixing seat (4), and the rotors (5) are arranged between the stator assemblies.

2. A double-sided linear switched reluctance machine according to claim 1, wherein said stator holder (2) is provided with a receiving slot (21), said stator assembly being located within said receiving slot (21).

3. A double-sided linear switched reluctance machine according to claim 1, wherein said stator assembly comprises a plurality of stators (3), said plurality of stators (3) being in turn fixedly connected to said stator holder (2).

4. A double sided linear switched reluctance machine according to claim 3, wherein said stator (3) comprises a stator yoke (31) and a plurality of spaced stator teeth (32), wherein said plurality of stator teeth (32) are all fixedly arranged on one side of said stator yoke (31) close to said mover (5), said mover (5) comprises a mover yoke (51), a plurality of spaced mover teeth (52) and coils (53), said mover yoke (51) is provided with a plurality of said mover teeth (52) towards both sides of two of said stator assemblies, respectively, said coils (53) are wound around said mover yoke (51), said stator teeth (32) and said mover teeth (52) are a motor air gap, said mover teeth (52) have a width equal to that of said stator teeth (32), the distance between two adjacent stator teeth (32) and the distance between two adjacent mover teeth (52) are a pole pitch L, and when one of said mover teeth (52) of said mover (5) is aligned with said stator teeth (32), the distance between the other stator teeth (5) and said mover teeth (32) are a pole pitch L, and the distance between said mover teeth (2/2) of said mover teeth (52).

5. The double-sided linear switched reluctance motor according to claim 4, wherein the number of the mover teeth (52) on the mover yoke (51) side is n, n is a multiple of 2, and n is greater than or equal to 4.

6. A double sided linear switched reluctance machine according to claim 4, wherein the width of the stator teeth (32) and the width of the rotor teeth (52) are both d, the ratio of d to L being 0.45.

7. A double sided linear switched reluctance machine according to claim 4, wherein the thickness h of the stator yoke (31) is 20mm.

8. The double-sided linear switched reluctance motor according to claim 1, wherein the mover fixing base (4) comprises a mover platform (41) and a platform cover (42) fixedly disposed on the mover platform (41), the mover platform (41) is slidably disposed on the base (1), the mover (5) is located between the mover platform (41) and the platform cover (42), and both the mover platform (41) and the platform cover (42) are fixedly connected to the mover (5).

9. A double-sided linear switched reluctance machine according to claim 8, wherein said base (1) is provided with a slide rail (11), said mover platform (41) is provided with a slider (411), said slider (411) is slidably arranged on said slide rail (11).

10. The double-sided linear switched reluctance machine according to claim 8, wherein said base (1), said stator holder (2), said mover stage (41) and said stage cover (42) are made of an aluminum alloy material.

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