CN207664842U - A kind of novel intermediate frequency asynchronous motor with stator winding end protection - Google Patents

Abstract

The utility model discloses a kind of novel intermediate frequency asynchronous motors with stator winding end protection, solve the problems, such as that existing intermediate frequency asynchronous motor cannot use under conditions of insufficient space.The intermediate frequency asynchronous motor of the utility model includes stator core, stator winding, rotor core, rotor windings, shaft and bearing；The motor further includes end protective cover, and the end protective cover inlays plastic compression outside stator core notch and stator winding by thermoplastic material, and stator winding is wrapped in inside the protective cover of end.The motor of the utility model is equipped with end protective cover, plays the role of protecting stator winding.Compared with conventional dipping lacquer formula protection, the end protective cover can effectively carry out secondary protection, inside it by stator winding package, prevent stator winding exposed, play the role of conventional electric motor shell, meets the demand that such motor uses in the case of insufficient space.

Description

A kind of novel intermediate frequency asynchronous motor with stator winding end protection

Technical field

It is specifically a kind of novel with stator winding end protection the utility model is related to motor technology field Intermediate frequency asynchronous motor is the auxiliary products of aircraft power driving unit.

Background technology

Intermediate frequency asynchronous motor is passed through three-phase 400Hz symmetrical currents when working, to establish rotating excitation field in air gap, this Rotating excitation field induced electromotive force and generates in rotor windings corresponding electric current, the electric current and air gap in the rotor windings of short circuit In rotating excitation field interaction and generate electromagnetic torque, rotor rotates under the influence of this torque, and entity is driven by shaft Load movement realizes conversion of the electric energy to mechanical energy.Intermediate frequency asynchronous motor has simple in structure, reliable for operation, sturdy and durable The advantages of, it is widely used in the executing agency of the Military Electronic Equipments such as space flight, aviation, ship, weapons.It is empty in some application installations Between it is insufficient in the case of, due to the limitation of volume, which can not install shell, such existing motor stator end is only adopted It is protected with dipping lacquer formula, motor winding cannot be effectively protected.

For example, application No. is 201620060576.1 utility model patents to disclose a kind of intermediate frequency asynchronous motor, institute It is as follows to state intermediate frequency asynchronous motor composition：Drive end bearing bracket (1), shell (2), stator (3), rotor (4), rear end cap (5) and axis (6)； The drive end bearing bracket (1) and rear end cap (5) are threadedly attached in the both ends of shell (2), and stator (3) is crimped on shell (2) inside, Rotor (4) is crimped on axis (6), and the both ends of axis (6) are coordinated by bearing and drive end bearing bracket (1) and rear end cap (5) respectively.This is electronic Machine can not be installed in the case where space is smaller.

Invention content

The purpose of this utility model is to provide it is a kind of it is novel with stator winding end protection intermediate frequency asynchronous motor, The motor plays the role of protecting stator winding in stator core end plastic compression end protective cover.It is anti-with conventional dipping lacquer formula Shield is compared, which can effectively carry out secondary protection, inside it by stator winding package, is prevented outside stator winding Dew, plays the role of conventional electric motor shell.

To achieve the above object, the utility model provides the following technical solutions：It is a kind of novel anti-with stator winding end The intermediate frequency asynchronous motor of shield, including stator core, stator winding, rotor core, rotor windings, shaft and bearing；It is described fixed Sub- winding embeds in the slot on stator core, and the rotor core is crimped in shaft, and shaft is placed in the inside of stator core In cavity, the rotor windings embed in the slot A of rotor core, and the left and right both ends of shaft are equipped with bearing, the bearing By playing a supporting role with external equipment assembly, the rotor core, rotor windings, shaft and bearing constitute rotor；It is described Motor further includes end protective cover, and the end protective cover inlays plastic compression in stator core notch and stator by thermoplastic material Outside winding, stator winding is wrapped in inside the protective cover of end, the stator core, stator winding and end protective cover are constituted Stator.

Further, the end protective cover includes 2 left and right symmetrically arranged lids and is placed between 2 lids Horizontal stripe, the lid includes the annular inner wall for the small diameter being arranged concentrically and larger-diameter annular outer wall, and is located at Annular inner wall and annular outer wall side and with annular inner wall and the integrally formed annular cover plate of annular outer wall, lid center is equipped with Through-hole, the both ends of shaft and bearing are pierced by from through-hole, are had on the inside of lid by being formed between annular inner wall and annular outer wall Annular groove, thermoplastic material form horizontal stripe in stator core slot mouth, form lid in the external of stator winding both sides respectively.

Further, the endless inner wall on wherein 1 lid in 2 lids and annular outer wall are equipped with identical straight The circular through hole of diameter, 2 circular through holes constitute stator winding line outlet.

Compared with prior art, advantageous effect is the utility model：End is arranged in stator winding both sides in the utility model Portion's protective cover recycles thermoplastic material in stator core end plastic compression end protective cover that is, on the basis of dipping lacquer formula is protected, Play the role of protecting stator winding.Compared with conventional single formula protection, which can effectively carry out secondary protection, will determine Sub- winding is wrapped in inside the protective cover of end, prevents stator winding exposed, is played the role of conventional electric motor shell, is met The demand that such motor uses in the case of insufficient space.

Description of the drawings

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of the utility model stator；

Fig. 3 is the dimensional structure diagram of the utility model stator；

Fig. 4 is the dimensional structure diagram of the utility model rotor core, rotor windings and shaft assembly；

Fig. 5 is the dimensional structure diagram of the utility model end protective cover；

Parts and number in figure：

1- stator cores；2- stator winding；3- rotor cores；4- rotor windings；5- shafts；6- bearings；The ends 7- are protected Lid；7-1- lids；7-2- horizontal stripes；7-1-1- annular inner walls；7-1-2- annular outer walls；7-1-3- annular cover plates；7-1-4- through-holes； 7-1-5- annular grooves；7-1-6- circular through holes；31- slots A.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.

Please refer to Fig.1-4, a kind of novel intermediate frequency asynchronous motor with stator winding end protection, including stator core 1, stator winding 2, rotor core 3, rotor windings 4, shaft 5 and bearing 6；The stator winding 2 embeds on stator core 1 In slot, the rotor core 3 is crimped in shaft 5, and shaft 5 is placed in the internal cavities of stator core 3, the rotor windings 4 It embeds in the slot A31 of rotor core 3,5 left and right both ends of the shaft are equipped with bearing 6, and the bearing 6 with outside by setting Standby assembly is played a supporting role, and the rotor core 3, rotor windings 4, shaft 5 and bearing 6 constitute rotor；The motor is also Including end protective cover 7, the end protective cover 7 inlays plastic compression in 1 notch of stator core and stator winding 2 by thermoplastic material Stator winding 2 is wrapped in inside end protective cover 7 by outside, and stator core 1, stator winding 2 and end protective cover 7 constitute fixed Son.

With reference to Fig. 5, the end protective cover 7 of plastic pressure forming includes 2 left and right symmetrically arranged lid 7-1 and sets Horizontal stripe 7-2, the lid 7-1 between 2 lid 7-1 include the small diameter being arranged concentrically annular inner wall 7-1-1 and Larger-diameter annular outer wall 7-1-2, and positioned at annular inner wall 7-1-1 and the sides annular outer wall 7-1-2 and in annular The integrally formed annular cover plate 7-1-3 of wall 7-1-1 and annular outer wall 7-1-2, the centers lid 7-1 are equipped with through-hole 7-1-4, shaft 5 Both ends and bearing 6 be pierced by from through-hole 7-1-4, have by annular inner wall 7-1-1 and annular outer wall 7-1-2 on the inside of lid 7-1 Between the annular groove 7-1-5 that is formed, thermoplastic material forms horizontal stripe 7-2 in 1 notch of stator core, respectively in stator winding 2 The external of both sides forms lid 1.

It is set on endless inner wall 7-1-1 on wherein 1 lid 7-1 and annular outer wall 7-1-2 in 2 lid 7-1 There are the circular through hole 7-1-6,2 circular through hole 7-1-6 of same diameter to constitute stator winding line outlet.

When assembly, stator winding 2 is embedded first in the slot on stator core 1, then by stator core 1 and stator around Group 2 is placed in the mold for making end protective cover 7, thermoplastic material is injected in mold, end protective cover 7 is made, in stator iron 1 notch of core forms horizontal stripe 7-2, forms lid 7-1 in the both sides of stator winding 2, stator winding 2 is wrapped in end protective cover 7 Inside prevents stator winding 2 exposed, plays the role of conventional electric motor shell, and after stator completes, it is fixed that rotor is placed in The internal cavities of son, bearing 6 are assembled with external equipment, have air gap between rotor and stator.

Three-phase 400Hz symmetrical currents are passed through when work, to establish rotating excitation field in air gap, this rotating excitation field is in short circuit Rotor windings in induced electromotive force and corresponding electric current is generated in rotor windings, the electric current and the rotating excitation field phase in air gap Interaction and generate electromagnetic torque, rotor rotates under the influence of this torque, pass through shaft drive entity load movement, realize electricity It can be to the conversion of mechanical energy.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.

Claims (3)

1. a kind of novel intermediate frequency asynchronous motor with stator winding end protection, including stator core（1）, stator winding （2）, rotor core（3）, rotor windings（4）, shaft（5）And bearing（6）；The stator winding（2）It embeds in stator core（1） On slot in, the rotor core（3）It is crimped on shaft（5）On, shaft（5）It is placed in stator core（3）Internal cavities in, institute State rotor windings（4）It embeds in rotor core（3）Slot A（31）It is interior, the shaft（5）Left and right both ends are equipped with bearing（6）, The bearing（6）By playing a supporting role with external equipment assembly；It is characterized in that, the motor further includes end protection Lid（7）, the end protective cover（7）Plastic compression is inlayed in stator core by thermoplastic material（1）Notch and stator winding（2）Outside Portion, by stator winding（2）It is wrapped in end protective cover（7）It is internal.

2. a kind of novel intermediate frequency asynchronous motor with stator winding end protection as described in claim 1, feature exist In the end protective cover（7）Including 2 left and right symmetrically arranged lids（7-1）And it is placed in 2 lids（7-1）Between Horizontal stripe（7-2）, the lid（7-1）Annular inner wall including the small diameter being arranged concentrically（7-1-1）With larger-diameter ring Shape outer wall（7-1-2）, and it is located at annular inner wall（7-1-1）And annular outer wall（7-1-2）Side and and annular inner wall（7-1- 1）And annular outer wall（7-1-2）Integrally formed annular cover plate（7-1-3）, lid（7-1）Center is equipped with through-hole（7-1-4）, turn Axis（5）Both ends and bearing（6）From through-hole（7-1-4）In be pierced by, lid（7-1）Inside has by annular inner wall（7-1-1）With Annular outer wall（7-1-2）Between the annular groove that is formed（7-1-5）, thermoplastic material is in stator core（1）Notch forms horizontal stripe （7-2）, respectively in stator winding（2）The external of both sides forms lid（7-1）.

3. a kind of novel intermediate frequency asynchronous motor with stator winding end protection as claimed in claim 2, feature exist In 2 lids（7-1）In wherein 1 lid（7-1）On endless inner wall（7-1-1）And annular outer wall（7-1-2）On Circular through hole equipped with same diameter（7-1-6）, 2 circular through holes（7-1-6）Constitute stator winding line outlet.