阅读说明：本技术 一种轨道交通永磁电机转子磁钢同槽立式装配装置 (Same-groove vertical assembling device for rotor magnetic steel of permanent magnet motor in rail transit ) 是由 何维 刘刚 雷军 曾凡军 元炯 李爱华 肖敬义 于 2019-11-22 设计创作，主要内容包括：本发明公开了一种轨道交通永磁电机转子磁钢同槽立式装配装置,包括磁钢装配导模和铁环,磁钢装配导模上沿圆周方向设有多个磁钢槽,磁钢槽的两侧设有分别设有第一辅助槽和第二辅助槽,第一、第二辅助槽均与磁钢槽相通,第一辅助槽内设有第一铁块,第二辅助槽内设有第二铁块,第一、第二铁块在圆周方向的宽度不等,铁环可套于转子铁心的外圆周上,并与转子铁心固定。本发明结合铁环和宽度不等的第一铁块和第二铁块,使得磁钢在受到不平衡的磁力作用,吸附停留在一个特定的位置,从而可以控制每一片磁钢入转子铁心后的初始位置,保证相邻两片磁钢装配入铁心时不会相撞,解决了磁钢入铁心槽初始距离不可控,造成相邻两片磁钢碰撞而损坏的难题。(The invention discloses a vertical assembling device for magnetic steel of a permanent magnet motor rotor in a same groove in rail transit, which comprises a magnetic steel assembling guide die and an iron ring, wherein a plurality of magnetic steel grooves are formed in the magnetic steel assembling guide die along the circumferential direction, a first auxiliary groove and a second auxiliary groove are respectively formed in two sides of each magnetic steel groove, the first auxiliary groove and the second auxiliary groove are communicated with the magnetic steel grooves, a first iron block is arranged in the first auxiliary groove, a second iron block is arranged in the second auxiliary groove, the widths of the first iron block and the second iron block in the circumferential direction are different, and the iron ring can be sleeved on the outer circumference of a rotor core and fixed with the rotor core. The invention combines the iron ring and the first iron block and the second iron block with different widths, so that the magnetic steel is adsorbed and stopped at a specific position under the action of unbalanced magnetic force, thereby controlling the initial position of each piece of magnetic steel after entering the rotor core, ensuring that two adjacent pieces of magnetic steel cannot collide when being assembled into the core, and solving the problem that the two adjacent pieces of magnetic steel are damaged due to collision because the initial distance of the magnetic steel entering the core slot is uncontrollable.)

1. The utility model provides a vertical assembly quality in same groove of track traffic permanent-magnet machine rotor magnet steel which characterized in that: including magnet steel assembly guide die (1) and hoop (2), be equipped with a plurality of magnet steel grooves (3) along the circumferencial direction on magnet steel assembly guide die (1), the both sides of magnet steel groove (3) are equipped with and are equipped with first auxiliary tank (51) and second auxiliary tank (52) respectively, first auxiliary tank (51) and second auxiliary tank (52) all communicate with each other with magnet steel groove (3), be equipped with first iron plate (61) in first auxiliary tank (51), be equipped with second iron plate (62) in second auxiliary tank (52), first iron plate (61) and second iron plate (62) are unequal in the width of circumferencial direction, magnet steel assembly guide die (1) center is equipped with through-hole (11), hoop (2) can overlap on the outer circumference of rotor core (4) to be fixed with rotor core (4).

2. The vertical assembling device for the magnetic steel of the permanent magnet motor rotor of the rail transit according to claim 1, which is characterized in that: the widths of the first auxiliary groove (51) and the second auxiliary groove (52) in the circumferential direction are different, the width of the first iron block (61) is matched with that of the first auxiliary groove (51), and the width of the second iron block (62) is matched with that of the second auxiliary groove (52).

3. The vertical assembling device for the magnetic steel of the permanent magnet motor rotor of the rail transit as claimed in claim 2, wherein: the first auxiliary groove (51) is a first dovetail groove, and the small opening end of the first dovetail groove is communicated with the magnetic steel groove (3).

4. The vertical assembling device for the magnetic steel of the permanent magnet motor rotor of the rail transit according to claim 3, which is characterized in that: the first iron block (61) is matched with the first dovetail groove.

5. The vertical assembling device for the magnetic steel of the permanent magnet motor rotor of the rail transit as claimed in claim 2, wherein: the second auxiliary groove (52) is a second dovetail groove, and the small-opening end of the second dovetail groove is communicated with the magnetic steel groove (3).

6. The vertical assembling device for the magnetic steel of the permanent magnet motor rotor of the rail transit as claimed in claim 5, wherein: the second iron block (62) is matched with the second dovetail groove.

7. The vertical assembling device for the magnetic steel of the permanent magnet motor rotor of the rail transit in the same groove according to any one of claims 1 to 6, is characterized in that: an adhesive layer is arranged between the first iron block (61) and the first auxiliary groove (51), and an adhesive layer is arranged between the second iron block (62) and the second auxiliary groove (52).

8. The vertical assembling device for the magnetic steel of the permanent magnet motor rotor of the rail transit in the same groove according to any one of claims 1 to 6, is characterized in that: the iron ring (2) is fastened on the outer circumference of the rotor core (4) through a screw (7).

9. The vertical assembling device for the magnetic steel of the permanent magnet motor rotor of the rail transit in the same groove according to any one of claims 1 to 6, is characterized in that: the axial length of the iron ring (2) is larger than the thickness of one magnetic steel (8) and is smaller than the thickness of two magnetic steels (8).

10. The vertical assembling device for the magnetic steel of the permanent magnet motor rotor of the rail transit in the same groove according to any one of claims 1 to 6, is characterized in that: and a key groove (12) is arranged in the through hole (11) of the magnetic steel assembly guide die (1).

Technical Field

The invention relates to the technical field of manufacturing of permanent magnet motors, in particular to a vertical assembling device for magnetic steel of a permanent magnet motor rotor in rail transit in the same groove.

Background

Permanent-magnet machine's rotor is in the manufacture process, the main problem that samarium cobalt magnet steel assembly faced now: when the magnetic steels are assembled, two adjacent magnetic steels collide and are damaged. For improving the efficiency of subway permanent magnet motor rotor magnetic steel assembly, the qualification rate of magnetic steel assembly and the consistency of magnetic steel assembly quality, the manual magnet steel assembly scheme commonly used of subway permanent magnet traction motor rotor core overall structure: the efficiency of the three assembling methods is reduced in sequence, the homopolar assembling is a scheme used by the existing automobile permanent magnet motor, the relative efficiency is low, and because the subway permanent magnet motor rotor is an integral iron core, the size is large, the weight is large, the magnetic steel is more, the preferred one-slot assembling process scheme is machine-mounted, and the relative efficiency is higher than that of the other two schemes. In the groove assembly process, as shown in fig. 1 and 2, 4 sleeves of the rotor core are arranged on a rotating shaft 43, the end part of 4 sleeves of the rotor core is provided with an end cover 42, the rotor core 4 is provided with a magnetic steel accommodating groove 41, the magnetic steel 8 is inserted into the magnetic steel accommodating groove 41 piece by piece, because the magnetic steel is pushed into the magnetic steel groove through a manual or push rod, when the last magnetic steel is inserted into the groove, because the positions of two adjacent magnetic steels are unknown, or force is not uniform, the two adjacent magnetic steels cannot collide with each other when being assembled into the core, the initial distance of the samarium-cobalt magnetic steel entering the core groove cannot be determined, and the two adjacent magnetic steels are damaged.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the vertical assembling device for the rotor magnetic steel and the slots of the permanent magnet motor of the rail transit, which can control the initial position of each piece of magnetic steel after entering the rotor core, ensure that two adjacent pieces of magnetic steel cannot collide when being assembled into the core and solve the problem that the two adjacent pieces of magnetic steel collide to damage because the initial distance of the magnetic steel entering the slots of the rotor core is not controllable.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a vertical assembly quality in same groove of track traffic permanent-magnet machine rotor magnet steel, is including magnet steel assembly guide die and hoop, be equipped with a plurality of magnet steel grooves along the circumferencial direction on the magnet steel assembly guide die, the both sides in magnet steel groove are equipped with and are equipped with first auxiliary tank and second auxiliary tank respectively, first auxiliary tank and second auxiliary tank all communicate with the magnet steel groove, be equipped with first iron plate in the first auxiliary tank, be equipped with the second iron plate in the second auxiliary tank, first iron plate and second iron plate vary at the width of circumferencial direction, the magnet steel assembly guide die center is equipped with the through-hole, the hoop can overlap on the outer circumference of rotor core to it is fixed with the rotor core.

As a further improvement of the above technical solution, the first auxiliary groove and the second auxiliary groove have different widths in the circumferential direction, the first iron block is matched with the first auxiliary groove in width, and the second iron block is matched with the second auxiliary groove in width.

As a further improvement of the technical scheme, the first auxiliary groove is a first dovetail groove, and a small opening end of the first dovetail groove is communicated with the magnetic steel groove.

As a further improvement of the above technical solution, the first iron block is matched with the first dovetail groove.

As a further improvement of the technical scheme, the second auxiliary groove is a second dovetail groove, and a small opening end of the second dovetail groove is communicated with the magnetic steel groove.

As a further improvement of the above technical solution, the second iron block is matched with the second dovetail groove.

As a further improvement of the above technical solution, an adhesive layer is provided between the first iron block and the first auxiliary groove, and an adhesive layer is provided between the second iron block and the second auxiliary groove.

As a further improvement of the above technical solution, the iron ring is fastened to an outer circumference of the rotor core by screws.

As a further improvement of the technical scheme, the axial length of the iron ring is larger than the thickness of one magnetic steel and is smaller than the thickness of two magnetic steels.

Compared with the prior art, the invention has the advantages that:

the same-slot vertical assembly device for the rotor magnetic steel of the permanent magnet motor is combined with the iron ring and the first iron block and the second iron block which are different in width, so that the magnetic steel is adsorbed and stopped at a specific position under the action of unbalanced magnetic force, the initial position of each piece of magnetic steel after entering the rotor core can be controlled, the adjacent two pieces of magnetic steel cannot collide when being assembled into the core, the problem that the initial distance of the samarium-cobalt magnetic steel entering the core slot is uncontrollable and the adjacent two pieces of magnetic steel collide to be damaged is solved, the magnetic steel assembly guide die is smaller in structure than a manual assembly guide die, the structure is simple, the cost is low, the shape change is easy, the final layer of magnetic steel is not higher than the rotor core, and the problem that the adhesive is dripped on the final layer.

Drawings

Fig. 1 is a schematic view showing a structure of a rotor core assembly in the related art.

Fig. 2 is a schematic structural diagram of a magnetic steel accommodating groove of a rotor core in the prior art.

Fig. 3 is a schematic view showing the structure of the rotor core assembly of the present invention.

Fig. 4 is a schematic structural diagram of a magnetic steel slot of a magnetic steel assembly guide die (including a first iron block and a second iron block) in the invention.

Fig. 5 is a schematic structural diagram of a magnetic steel slot of a magnetic steel assembly guide die (without a first iron block and a second iron block).

The reference numerals in the figures denote:

1. assembling a guide die on the magnetic steel; 11. a through hole; 12. a keyway; 2. an iron ring; 3. a magnetic steel groove; 4. a rotor core; 41. a magnetic steel accommodating groove; 51. a first auxiliary groove; 52. a second auxiliary groove; 61. a first iron block; 62. a second iron block; 7. a screw; 8. and (5) magnetic steel.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples of the specification.

As shown in fig. 3 to 5, the same-slot vertical assembly apparatus for rotor magnetic steel of a permanent magnet motor for rail transit according to the present embodiment includes a magnetic steel assembly guide die 1 and an iron ring 2, a plurality of magnetic steel slots 3 are disposed on the magnetic steel assembly guide die 1 along a circumferential direction, a first auxiliary slot 51 and a second auxiliary slot 52 are disposed on two sides of each magnetic steel slot 3, the first auxiliary slot 51 and the second auxiliary slot 52 are both communicated with the magnetic steel slots 3, a first iron block 61 is disposed in the first auxiliary slot 51, a second iron block 62 is disposed in the second auxiliary slot 52, widths of the first iron block 61 and the second iron block 62 in the circumferential direction are different, a through hole 11 is disposed in a center of the magnetic steel assembly guide die 1, and the iron ring 2 can be sleeved on an outer circumference of a rotor core 4 and fixed to the rotor core 4.

Each magnetic steel groove 3 on the magnetic steel assembly guide die 1 corresponds to each magnetic steel accommodating groove 41 on the rotor core 4 in position, and the magnetic steel 8 penetrates through the magnetic steel grooves 3 to enter the magnetic steel accommodating grooves 41. The magnetic steel slots 3 are arranged in pairs on the rotor core 4. The first iron piece 61 is fixed in the first auxiliary groove 51, the second iron piece 62 is fixed in the second auxiliary groove 52, the width of the second iron piece 62 is larger than the width of the first iron piece 61, the width is different along the circumference direction of the rotor core 4,

because the first iron plate 61 and the second iron plate 62 that the width is unequal have been embedded into on both sides in each magnet steel groove 3, the distribution of magnetic force line has been changed, make the magnetic force line of magnet steel holding tank 41 of stator core 4 distribute inhomogeneously, the change of magnetic flux has been reduced, the magnetic force that magnet steel 8 received on magnet steel groove 3 both sides is different, the wide magnetic force of iron plate is big, magnet steel 8 can be toward wide second iron plate 62 one side absorption, make the acceleration that magnet steel 8 falls the slot reduce, overlap iron ring 2 at rotor core 4, magnet steel 8 receives iron ring 2's magnetic force effect in magnet steel holding tank 41, iron ring 2 can exert the absorption pulling force to magnet steel 8, make the acceleration that magnet steel 8 falls the slot reduce again. When the magnetic steel assembling guide die is used, the iron ring 2 is sleeved on the outer circumference of the rotor core 4, the upper end face of the iron ring 2 is flush with the upper end face of the rotor core 4, the iron ring 2 is fastened on the outer circumference of the rotor core 4, the magnetic steel assembling guide die 1 is sleeved on the rotating shaft 43, the lower end face of the magnetic steel assembling guide die 1 abuts against the rotor core 4, and the magnetic steel grooves 3 in the magnetic steel assembling guide die 1 correspond to the magnetic steel accommodating grooves 41 in the rotor core 4 in position.

Aiming at each magnetic steel groove 3, when the first magnetic steel 8 is inserted into the magnetic steel groove 3, the magnetic force of the magnetic steel 8 in the magnetic steel groove 3 is asymmetric, and the magnetic force of the iron ring 2 to the magnetic steel 8 is combined, the magnetic steel 8 can stay at the position corresponding to the iron ring 2 in the magnetic steel accommodating groove 41, then the magnetic steel 8 is pushed to the bottom of the magnetic steel accommodating groove 41 by the push rod, when the second magnetic steel 8 is inserted into the magnetic steel slot 3, similarly, by combining the asymmetric magnetic force of the first iron block 61 and the second iron block 62 and the magnetic force of the iron ring 2 to the magnetic steel 8, the magnetic steel 8 will still stay at a fixed position in the magnetic steel accommodating slot 41 (i.e. the position where the magnetic steel 8 arrives downward is the position corresponding to the iron ring 2 in the accommodating slot 41), and then the magnetic steel 8 is pushed to the bottom of the magnetic steel accommodating slot 41, by analogy, until the last piece of magnetic steel 8 enters the groove, the last piece of magnetic steel 8 is positioned in the magnetic steel accommodating groove 41 corresponding to the iron ring 2; because, after each magnetic steel 8 is initially inserted into the groove, the position of each magnetic steel 8 in the magnetic steel accommodating groove 41 corresponds to the iron ring 2; the position of 8 inslots of each piece magnet steel of control, that is to say, before 8 inslots of magnet steel reach this fixed position, preceding a piece magnet steel 8 has already arrived the tank bottom, has consequently guaranteed that two piece adjacent magnet steel 8 can never collide.

The permanent magnet motor rotor magnetic steel same-groove vertical assembling device combines the iron ring 2 and the first iron block 61 and the second iron block 62 with different widths, changes the distribution of magnetic lines of force, causes the magnetic lines of force of the iron core magnetic steel groove to be unevenly distributed, reduces the change of magnetic flux, causes the acceleration of the magnetic steel 8 falling into the groove to be reduced, and the magnetic steel 8 stays at a specific position after entering the groove, thereby controlling the initial position of each magnetic steel 8 after entering the rotor core 4, ensuring that two adjacent magnetic steels 8 can not collide when being assembled into the core, solving the problem that the initial distance of the samarium cobalt magnetic steel entering the core groove is uncontrollable, causing two adjacent magnetic steels 8 to collide and be damaged, and the magnetic steel assembly guide die 1 has simple structure, low cost and easy shape change, meanwhile, because the last magnetic steel 8 stays at the position corresponding to the iron ring 2 in the magnetic steel accommodating groove 41 after entering the groove, the last magnetic steel 8 is in a balanced, the end face of the stator core 4 can not be rebounded, the final layer of magnetic steel 8 is ensured not to be higher than the core 4, and the problem that the final layer of magnetic steel drops adhesive is solved.

In this embodiment, the widths of the first auxiliary groove 51 and the second auxiliary groove 52 in the circumferential direction are different, the first auxiliary groove 51 is a first dovetail groove, and a small opening end of the first dovetail groove is communicated with the magnetic steel groove 3. The first iron block 61 and the first dovetail groove have the same structural shape, and are matched with each other. The structure of the first dovetail groove can clamp the first iron block 61 in the first dovetail groove and is not easy to fall off, an adhesive layer is arranged between the first iron block 61 and the first auxiliary groove 51, and the first iron block 61 can be clamped in the first dovetail groove by matching with the adhesive layer. Similarly, the second auxiliary groove 52 is a second dovetail groove, and a small-opening end of the second dovetail groove is communicated with the magnetic steel groove 3. The second iron block 62 and the second dovetail groove have the same structural shape, and are matched with each other, and the matching adhesive layer can enable the second iron block 62 to be clamped in the second dovetail groove. It should be noted that, the shapes of the first auxiliary groove 51 and the first iron block 61 and the shapes of the second auxiliary groove 52 and the second iron block 62 are matched, the width difference between the first iron block 61 and the second iron block 62 is realized through the width difference between the first dovetail groove and the second dovetail groove, and meanwhile, the iron blocks can be better clamped in the dovetail grooves, in other embodiments, the shapes of the first auxiliary groove 51 and the first iron block 61 and the shapes of the second auxiliary groove 52 and the second iron block 62 may also be unmatched, as long as the first iron block 61 and the second iron block 62 have the width difference. In other embodiments, the width of the first iron block 61 may be larger than that of the second iron block 62.

In this embodiment, the iron ring 2 is pressed against the outer circumference of the rotor core 4 by a plurality of screws 7. Preferably, the axial length of the iron ring 2 is larger than the thickness of one magnetic steel 8 and smaller than the thickness of two magnetic steels 8, so that the position reached by the magnetic steel 8 downwards is ensured to be in the iron ring 2.

In this embodiment, a key slot 12 is provided in the through hole 11 of the magnetic steel assembly guide die 1. The magnetic steel assembly guide die 1 is sleeved on the rotating shaft 43 and is matched with a key on the rotating shaft 43 through the key groove 12 to limit the rotation of the magnetic steel assembly guide die 1 relative to the rotating shaft 43.

By adopting the same-groove vertical assembling device for the permanent magnet motor rotor magnetic steel, 1 person can operate the same-groove vertical assembling device to meet 8 permanent magnet motors of subway produced in daily life, and the primary qualification rate of the product is 100% according to the number of the permanent magnet motors. The assembly of the permanent magnet motor rotor magnetic steel can meet the requirement of mass production, and meanwhile, the production efficiency and the assembly quality qualification rate can be remarkably improved, so that the economic benefit is improved.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.