CN112311115B

CN112311115B - High-power asynchronous motor with adjustment retaining ring interference magnitude

Info

Publication number: CN112311115B
Application number: CN201910894663.5A
Authority: CN
Inventors: 林明敏; 熊新文; 张陈
Original assignee: Panlong Mechanical & Electrical Co ltd
Current assignee: Panlong Mechanical & Electrical Co ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2022-05-24
Anticipated expiration: 2039-09-20
Also published as: CN112311115A

Abstract

The invention discloses a high-power asynchronous motor with the function of adjusting the interference of a guard ring, which comprises a rotor shell, a stator coil and a rotary rod, wherein a shoulder is arranged right below the rotor shell, the outer side of the rotor shell is connected with a radiating fin, the stator coil is arranged above the radiating fin, an annular patch is arranged on the outer side of the stator coil, a stator core is nested on the outer side of the annular patch, a balance plate is arranged right above the annular patch, a positioning nut is connected to the upper part of the balance plate in a threaded manner, a rotary shaft is connected to the outer side of the balance plate in a penetrating manner, the rotary rod is connected to the right above the rotary shaft, the back of the radiating fin is connected with a heat conducting fin, and a radiating channel is arranged on the back of the heat conducting fin. The high-power asynchronous motor with the guard ring interference adjusting function is provided with the bevel gear and the screw rod, the screw rod is driven to rotate through the bevel gear, the guard ring piece is driven to horizontally move through the screw rod, and the distance between the stator and the rotor is adjusted according to use requirements.

Description

High-power asynchronous motor with adjustment retaining ring interference magnitude

Technical Field

The invention relates to the technical field of motors, in particular to a high-power asynchronous motor with a function of adjusting the interference magnitude of a guard ring.

Background

The rotor rotates in the inside of stator cavity through the rotor at the operation in-process, and there is the air gap of a section distance between stator and the rotor, and in order to guarantee that the rotor can rotate freely in stator cavity, the size of air gap is great to asynchronous motor's performance, operational reliability influence, so in the use, need carry out reasonable control to the distance between stator and the rotor to ensure the stability of motor operation.

The rotor of the asynchronous motor is of a fixed structure at present, the magnitude of interference of a retaining ring is difficult to adjust according to use requirements, gaps are too large, magnetic resistance is increased, excitation loss is increased, exciting current is increased along with the increase of the power factor of the motor, the performance of the motor is deteriorated, the rotor can generate a large amount of heat in the operation process, and the existing rotor heat dissipation part is of a fixed structure and is difficult to replace and disassemble the heat dissipation part.

We therefore propose a high power asynchronous machine with adjustable grommet interference in order to solve the problems set out above.

Disclosure of Invention

The invention aims to provide a high-power asynchronous motor with a guard ring interference adjusting function, and aims to solve the problems that the prior asynchronous motor rotor is of a fixed structure, the guard ring interference is difficult to adjust according to the use requirement, and the prior rotor radiating part is of a fixed structure and is difficult to replace and disassemble the radiating part in the prior market.

In order to achieve the purpose, the invention provides the following technical scheme: a high-power asynchronous motor with adjustable grommet interference magnitude comprises a rotor shell, a stator coil and a rotary rod, wherein a shoulder is arranged under the rotor shell, the outer side of the rotor shell is connected with a radiating fin, the stator coil is arranged above the radiating fin, the outer side of the stator coil is provided with an annular patch, a stator core is nested on the outer side of the annular patch, a balance plate is arranged right above the annular patch, a positioning nut is in threaded connection above the balance plate, the outer side of the balance plate is connected with a rotary shaft in a penetrating manner, the rotary rod is connected right above the rotary shaft, the back of the radiating fin is connected with a heat conducting fin, the back of the heat conducting fin is provided with a heat radiating channel, the outer side of the rotary shaft is connected with a rotary disk, permanent magnets are arranged on the rotary disk in an annular distribution manner, slots are arranged on the outer side of the rotary disk, and limiting strips are arranged on the left side and the right side of the slots, and a rolling bearing is arranged at the bottom of the rotor shell.

Preferably, the radiating fins are connected with the rotor shell through heat conducting fins, the whole heat conducting fins are of a T-shaped structure, and the heat conducting fins and the rotor shell are made of brass materials.

Preferably, the upper side and the lower side of the stator coil both adopt arc structures, the stator coil and the balance plate are mutually attached, and the balance plate adopts a stainless steel circular structure.

Preferably, the stator core and the permanent magnets are parallel to each other, and the number of the permanent magnets is twice that of the stator core.

Preferably, the inside of pivot is provided with awl tooth, lead screw, internal threaded rod, retaining ring piece, louvre and recess, and the inside of pivot is provided with the awl tooth to the outside of awl tooth is connected with the lead screw, and the outside of lead screw is connected with internal threaded rod moreover, and the outside of internal threaded rod is connected with the retaining ring piece simultaneously, the running through of retaining ring piece is provided with the louvre, and the left and right sides of louvre is provided with the recess to the ripple structure is adopted in the outside of recess.

Preferably, the ring protection sheet and the internal thread rod form a telescopic structure through bevel teeth and a screw rod, the ring protection sheet is connected with the rotating disk through a slot and a limiting strip, and the width of the limiting strip is larger than that of the ring protection sheet.

Preferably, the heat dissipation channel is perpendicular to the heat conducting fins, and the heat dissipation channel penetrates through the outer side of the rotor shell.

Preferably, the thickness of the permanent magnet is smaller than that of the rotating disc, and the permanent magnet and the rotating disc form a rotating structure through the protective ring sheet and the rotating shaft.

Preferably, the width of the limiting strips is consistent with that of the rotating disc, the longitudinal sections of the limiting strips are of L-shaped structures, and the number of the limiting strips is 8.

Compared with the prior art, the invention has the beneficial effects that: the large-power asynchronous motor with the function of adjusting the interference magnitude of the retaining ring;

1. the bevel gear and the screw rod are arranged, the screw rod is driven to rotate through the bevel gear, the screw rod is used for driving the ring protection sheet to horizontally move, the distance between the stator and the rotor is adjusted according to use requirements, the flexibility of the device in the use process is improved, the rotor can freely rotate in the stator cavity, and the operation efficiency of the motor is further improved;

2. the heat conducting fins and the heat radiating channels are arranged, heat in the operation process of the rotor is conducted out through the heat radiating channels, the speed of conducting heat out of the interior of the rotor shell is shortened, and the heat conducting fins are used for adsorbing heat in the interior of the rotor shell, so that the speed of conducting heat out of the interior of the stator coil and the interior of the permanent magnet is accelerated;

3. be provided with spacing and recess, carry on spacingly to the outside of protecting the ring piece through the recess, ensure that the protecting the ring piece drives the stability of rotary disk operation in-process to utilize spacing to prescribe a limit to protecting the ring piece adjusting distance, avoid protecting the ring piece and take place the condition that drops at rotatory in-process, increase the security of permanent magnet in service.

Drawings

Fig. 1 is a schematic front view of a high-power asynchronous motor with a guard ring interference adjusting function according to the present invention;

FIG. 2 is a schematic view of the internal structure of a rotating shaft of a high-power asynchronous motor with the function of adjusting the interference of a retaining ring according to the invention;

FIG. 3 is a schematic side view of a grommet plate of a high-power asynchronous motor with grommet interference adjustment according to the present invention;

FIG. 4 is a schematic structural diagram of a rotor housing of a high-power asynchronous motor with the interference of a regulating guard ring according to the invention;

FIG. 5 is a schematic diagram of a positive cross-sectional structure of a stator core of a high-power asynchronous motor with an adjusting guard ring interference magnitude according to the present invention;

fig. 6 is a schematic view of a rotor housing of a high-power asynchronous motor with an adjustable guard ring interference magnitude according to the present invention.

In the figure: 1. a rotor housing; 2. a shoulder; 3. a heat sink; 4. a stator coil; 5. annular paster; 6. a stator core; 7. a balance plate; 8. positioning a nut; 9. a rotating shaft; 901. conical teeth; 902. a screw rod; 903. an inner threaded rod; 904. a ring guard sheet; 905. heat dissipation holes; 906. a groove; 10. rotating the rod; 11. a heat conductive sheet; 12. a heat dissipation channel; 13. rotating the disc; 14. a permanent magnet; 15. a slot; 16. a limiting strip; 17. a rolling bearing.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a high-power asynchronous motor with the function of adjusting the interference magnitude of a guard ring comprises a rotor shell 1, a shoulder 2, radiating fins 3, stator coils 4, annular patches 5, a stator core 6, a balance plate 7, positioning nuts 8, a rotating shaft 9, a rotating rod 10, heat conducting fins 11, radiating channels 12, a rotating disk 13, a permanent magnet 14, slots 15, a limiting strip 16 and a rolling bearing 17, wherein the shoulder 2 is arranged right below the rotor shell 1, the radiating fins 3 are connected to the outer side of the rotor shell 1, the stator coils 4 are installed above the radiating fins 3, the annular patches 5 are arranged on the outer side of the stator coils 4, the stator cores 6 are nested on the outer side of the annular patches 5, the balance plate 7 is arranged right above the annular patches 5, the positioning nuts 8 are in threaded connection above the balance plate 7, the rotating shaft 9 is connected to the outer side of the balance plate 7 in a penetrating manner, and the rotating rod 10 is connected right above the rotating shaft 9, the back of fin 3 is connected with conducting strip 11, and the back of conducting strip 11 is provided with heat dissipation channel 12, and the outside of pivot 9 is connected with rotary disk 13, and is the annular distribution on the rotary disk 13 and is provided with permanent magnet 14, and the outside of rotary disk 13 is provided with slot 15, and the left and right sides of slot 15 is provided with spacing 16, and the bottom of rotor housing 1 is provided with antifriction bearing 17.

The radiating fin 3 is connected with the rotor housing 1 through the heat conducting fin 11, and the whole body of the heat conducting fin 11 is of a T-shaped structure, and the heat conducting fin 11 and the rotor housing 1 are made of brass, so that the radiating fin 3 and the rotor housing 1 are fixed through the heat conducting fin 11, and the daily radiating and fixing efficiency of the heat conducting fin 11 is improved.

Stator coil 4's upper and lower both sides all adopt the arc structure, and stator coil 4 and balance plate 7 are for laminating each other to balance plate 7 adopts the circular structure of stainless steel, fixes stator coil 4's top through balance plate 7, ensures the stability in the stator coil 4 uses.

Stator core 6 is parallel to each other with permanent magnet 14 to the quantity of permanent magnet 14 is twice stator core 6, thereby produces exciting current through stator core 6 and permanent magnet 14 rotation each other, ensures stator core 6 stability in the operation.

The inside of pivot 9 is provided with awl tooth 901, lead screw 902, internal thread pole 903, grommet piece 904, louvre 905 and recess 906, and the inside of pivot 9 is provided with awl tooth 901, and the outside of awl tooth 901 is connected with lead screw 902, and the outside of lead screw 902 is connected with internal thread pole 903, the outside of internal thread pole 903 is connected with grommet piece 904 simultaneously, the running through of grommet piece 904 is provided with louvre 905, and the left and right sides of louvre 905 is provided with recess 906, and the outside of recess 906 adopts ripple structure, support the pressure through grommet piece 904 to the outside of rotary disk 13, ensure the stability of permanent magnet 14 in the operation, and the frictional force of contact is increased through the recess 906 in the grommet piece 904 outside.

The guard ring piece 904 and the inner threaded rod 903 form a telescopic structure through the bevel gear 901 and the lead screw 902, the guard ring piece 904 and the rotating disk 13 are connected through the slot 15 and the limiting strip 16, the width of the limiting strip 16 is larger than that of the guard ring piece 904, the guard ring piece 904 drives the permanent magnet 14 to move according to the operation requirements of the stator core 6 and the permanent magnet 14, and the excitation loss of the permanent magnet 14 in the operation process is reduced.

The heat dissipation channel 12 and the heat conducting fins 11 are perpendicular to each other, the heat dissipation channel 12 penetrates through the outer side of the rotor shell 1, heat generated by operation is conducted to the surfaces of the heat conducting fins 11 through the heat dissipation channel 12, and therefore the operation heat dissipation efficiency of the equipment is accelerated.

The thickness of the permanent magnet 14 is smaller than that of the rotating disk 13, the permanent magnet 14 and the rotating disk 13 form a rotating structure through the ring protecting sheet 904 and the rotating shaft 9, the permanent magnet 14 is driven by the ring protecting sheet 904 to generate electromagnetic reaction with the stator iron core 6, and an air gap harmonic wave field between the permanent magnet 14 and the stator iron core 6 is formed.

The width of spacing 16 is unanimous with rotary disk 13 width, and the longitudinal section of spacing 16 is "L" font structure to the quantity that spacing 16 set up is 8 groups, and is spacing to the junction of protecting ring piece 904 through spacing 16, does to protect ring piece 904 to drive the stability of rotary disk 13 rotation in-process.

The working principle of the embodiment is as follows: when the high-power asynchronous motor with the guard ring interference adjustment function is used, according to fig. 4, firstly, an operator inserts the heat conducting fins 11 on the back of the heat radiating fins 3 into the outer side of the rotor housing 1, according to fig. 1, 2, 3 and 6, and according to the operation requirement between the stator core 6 and the permanent magnet 14, holds the rotary rod 10, uses the rotary rod 10 to drive the bevel teeth 901 to rotate, the bevel teeth 901 drive the four groups of bevel teeth 901 to rotate, the bevel teeth 901 drive the lead screw 902, drives the inner threaded rod 903 and the guard ring 904 to move through the lead screw 902, inserts the guard ring 904 into the slot 15, the slot 15 limits and fixes the guard ring 904 through the limiting strips 16 on the left side and the right side, the grooves 906 on the surface of the guard ring 904 increase the friction force of the contact area, according to fig. 1, then fixes the upper side and the lower side of the stator coil 4 through the balance plate 7 and the shoulder 2, the top of the balance plate 7 is fixed by a positioning nut 8, so that the motor is assembled and fixed;

according to the drawings of fig. 1, fig. 2, fig. 5 and fig. 6, the rotating shaft 9 rotates and drives the rolling bearing 17 at the joint of the rotor housing 1 to rotate, meanwhile, the rotating shaft 9 drives the rotating disc 13 and the permanent magnet 14 to rotate, the stator core 6 and the permanent magnet 14 outside the annular patch 5 generate an excitation magnetic field to generate force action on the energized conductor of the stator coil 4, the rotor slot is internally provided with an armature winding, when the armature winding is energized, the armature winding rotates under the excitation action, the permanent magnet 14 rotates to convert the electric energy into mechanical energy, the rotating shaft 9 drives the rotating disc 13 to generate certain heat in the rotating process, according to the drawing of fig. 4, the heat is conducted to the heat-conducting fins 11 through the heat-radiating channels 12 arranged on the inner wall of the rotor housing 1, the heat is radiated to the surrounding air by the heat-radiating fins 3 through the heat-conducting fins 11, the left side and the right side of the protective ring piece 904 are limited through the limiting strips 16, the situation that the guard ring sheet 904 is deviated or loosened is avoided, and a series of work is completed.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a high-power asynchronous machine with adjust retaining ring interference magnitude, includes rotor housing (1), stator coil (4) and rotary rod (10), its characterized in that: a shoulder (2) is arranged under the rotor shell (1), the outer side of the rotor shell (1) is connected with a radiating fin (3), the stator coil (4) is installed above the radiating fin (3), the outer side of the stator coil (4) is provided with an annular patch (5), the outer side of the annular patch (5) is nested with a stator core (6), a balance plate (7) is arranged right above the annular patch (5), a positioning nut (8) is in threaded connection with the upper side of the balance plate (7), a rotating shaft (9) is connected with the outer side of the balance plate (7) in a penetrating and opening mode, a rotating rod (10) is connected right above the rotating shaft (9), the back of the radiating fin (3) is connected with a heat conducting fin (11), a heat radiating channel (12) is arranged at the back of the heat conducting fin (11), and a rotating disk (13) is connected with the outer side of the rotating shaft (9), permanent magnets (14) are distributed on the rotating disc (13) in an annular shape, slots (15) are formed in the outer side of the rotating disc (13), limiting strips (16) are arranged on the left side and the right side of each slot (15), and rolling bearings (17) are arranged at the bottom of the rotor shell (1); the inside of pivot (9) is provided with awl tooth (901) to the outside of awl tooth (901) is connected with lead screw (902), and the outside of lead screw (902) is connected with internal thread pole (903) in addition, and the outside of internal thread pole (903) is connected with retaining ring piece (904) simultaneously, the running through of retaining ring piece (904) is provided with louvre (905), and the left and right sides of louvre (905) is provided with recess (906), and the outside of recess (906) adopts the ripple structure.

2. The high-power asynchronous motor with the function of adjusting the interference of the guard ring according to claim 1, is characterized in that: the radiating fins (3) are connected with the rotor shell (1) through heat conducting fins (11), the heat conducting fins (11) are integrally of a T-shaped structure, and the heat conducting fins (11) and the rotor shell (1) are made of brass.

3. The high-power asynchronous motor with the function of adjusting the interference of the guard ring according to claim 1, is characterized in that: the upper side and the lower side of the stator coil (4) are both arc-shaped structures, the stator coil (4) and the balance plate (7) are mutually attached, and the balance plate (7) is of a stainless steel circular structure.

4. A high-power asynchronous machine with regulation of the interference of the shroud ring according to claim 1, characterized in that: the stator core (6) and the permanent magnets (14) are parallel to each other, and the number of the permanent magnets (14) is twice that of the stator core (6).

5. A high-power asynchronous machine with regulation of the interference of the shroud ring according to claim 1, characterized in that: the guard ring piece (904) and the internal thread rod (903) form a telescopic structure through a bevel gear (901) and a screw rod (902), the guard ring piece (904) is connected with the rotating disk (13) through a slot (15) and a limiting strip (16), and the width of the limiting strip (16) is larger than that of the guard ring piece (904).

6. The high-power asynchronous motor with the function of adjusting the interference of the guard ring according to claim 1, is characterized in that: the heat dissipation channel (12) and the heat conducting fins (11) are perpendicular to each other, and the heat dissipation channel (12) penetrates through the outer side of the rotor shell (1).

7. The high-power asynchronous motor with the function of adjusting the interference of the guard ring according to claim 1, is characterized in that: the thickness of the permanent magnet (14) is smaller than that of the rotating disk (13), and the permanent magnet (14) and the rotating disk (13) form a rotating structure through the ring guard sheet (904) and the rotating shaft (9).

8. The high-power asynchronous motor with the function of adjusting the interference of the guard ring according to claim 1, is characterized in that: the width of the limiting strips (16) is consistent with that of the rotating disc (13), the longitudinal sections of the limiting strips (16) are of L-shaped structures, and the number of the limiting strips (16) is 8.