CN210927357U

CN210927357U - Oil-immersed motor structure

Info

Publication number: CN210927357U
Application number: CN201921991286.9U
Authority: CN
Inventors: 李娅娟; 高振涛; 毛永光; 陈国斯
Original assignee: Dalian Electric Motor Group Co ltd
Current assignee: Dalian Electric Motor Group Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-07-03
Anticipated expiration: 2029-11-18

Abstract

The utility model relates to the field of motor structures, in particular to an oil-immersed motor structure, which comprises a shell, an upper end cover, a lower end cover, a rotor, a winding stator core and a gear pump; an upper end cover and a lower end cover are respectively fixed at two ends of the shell, the shell and the lower end cover are connected through a motor flange, an oil inlet and an oil outlet are arranged on the motor flange, and a plurality of through holes are formed in the motor flange and enable a shell cavity of the motor to be communicated with a cavity of the lower end cover; the lower end cover cavity is internally fixed with a gear pump, the rotor and the winding stator core are arranged in the casing, and the rotating shaft of the rotor penetrates through the motor flange to be connected to the gear pump. The utility model discloses a motor structure is full of hydraulic oil at whole motor inner chamber to do benefit to the lubrication of motor winding heat dissipation, cooling and motor inner bearing. The pump is in the motor cavity, and pump and motor coaxial direct connection, compact structure.

Description

Oil-immersed motor structure

Technical Field

The utility model relates to a motor structure field specifically is an oil-immersed motor structure.

Background

The heat dissipation of the motor mainly adopts two modes of wind cooling and liquid cooling, wherein the wind cooling can be divided into natural wind cooling and fan cooling, the heat inside the motor is conducted to the shell, or the stator and the rotor are exposed in the air and then cooled by the flowing of the air, and the liquid cooling needs to transfer the heat conducted inside the motor to the shell by cooling oil or cooling water through a pipeline or a cavity in the shell, so that the temperature inside the motor is reduced.

The motor bearing is lubricated by oil and grease, and any lubrication needs a certain structure to be realized.

When the motor is connected with the pump, because the main shaft of pump is longer with the part that the pivot of motor stretches out the casing, if be connected the pivot of motor with the main shaft of pump, then cause the overall dimension of pump motor group great easily, not only the installation accuracy is difficult to proofread, and the space that occupies is great, and storage and the transportation of extremely inconvenient equipment moreover, the defect is obvious.

Disclosure of Invention

According to the defect that above-mentioned prior art exists, the utility model aims at providing a can give the motor winding heat dissipation, can make lubricated oily type motor structure of bearing again.

In order to achieve the above purpose, the utility model adopts the technical scheme that: an oil immersion type motor structure comprises a shell, an upper end cover, a lower end cover, a rotor, a winding stator core and a gear pump; an upper end cover and a lower end cover are respectively fixed at two ends of the shell, the shell and the lower end cover are connected through a motor flange, an oil inlet and an oil outlet are arranged on the motor flange, and a plurality of through holes are formed in the motor flange and enable a shell cavity of the motor to be communicated with a cavity of the lower end cover; the lower end cover cavity is internally fixed with a gear pump, the rotor and the winding stator core are arranged in the casing, and the rotating shaft of the rotor penetrates through the motor flange to be connected to the gear pump.

Furthermore, a bearing fixing support is arranged in the shell cavity, the bearing fixing support is arranged on one side, close to the upper end cover, of the rotor, the bearing fixing support is fixed with the motor flange through bolts, one end of a rotating shaft of the rotor is supported on the motor flange through a supporting bearing, and the other end of the rotating shaft of the rotor is supported on the bearing fixing support through the supporting bearing.

Further, an oil discharge port of the gear pump is communicated with an oil outlet on the motor flange.

Further, the upper portion of the housing is provided with a wire outlet member, and the wire turn is connected to a terminal of the wire outlet member through the bearing fixing bracket.

Furthermore, the lower end cover, the motor flange, the shell and the upper end cover form a motor sealing cavity.

The utility model has the advantages that: the utility model discloses a motor structure is full of hydraulic oil at whole motor inner chamber to do benefit to the lubrication of motor winding heat dissipation, cooling and motor inner bearing. The pump is in the motor cavity, and pump and motor coaxial direct connection, compact structure.

Drawings

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is a structural outline view of the present invention;

FIG. 3 is a view from c-c of FIG. 2;

in the figure: 1. the device comprises a lower end cover, 2, a gear pump, 3, a motor flange, 4, a supporting bearing, 5, a machine shell, 6, a rotor, 7, a winding stator core, 8, a bearing fixing support, 9, an upper end cover, 10, a wire outlet component, 11, an oil inlet, 12, an oil outlet, 13, a through hole, 14 and an oil outlet of the gear pump.

Detailed Description

In order to make the structure and function of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solution in the embodiments of the present invention.

Referring to fig. 1-3, an oil-immersed motor structure comprises a housing 5, an upper end cover 9, a lower end cover 1, a rotor 6, a winding stator core 7 and a gear pump 2; an upper end cover 9 and a lower end cover 1 are respectively fixed at two ends of the machine shell 5, the machine shell 5 and the lower end cover 1 are connected through a motor flange 3, the lower end cover 1, the motor flange 3, the machine shell 5 and the upper end cover 9 form a motor sealing cavity, an oil inlet 11 and an oil outlet 12 are arranged on the motor flange 3, a plurality of through holes 13 are arranged on the motor flange 3, and the motor shell cavity is communicated with the lower end cover cavity through the plurality of through holes; lower end cover intracavity is fixed with gear pump 2, rotor 6 and winding stator core 7 set up in casing 5, and motor flange 3 is passed in the pivot of rotor and is connected to gear pump 2.

Further, a bearing fixing support 8 is arranged in the casing cavity, the bearing fixing support 8 is arranged on one side, close to the upper end cover 9, of the rotor 6, the bearing fixing support 8 is fixed with the motor flange 3 through bolts, one end of a rotating shaft of the rotor is supported on the motor flange 3 through a supporting bearing, and the other end of the rotating shaft of the rotor is supported on the bearing fixing support 8 through the supporting bearing.

Further, an oil outlet 14 of the gear pump is communicated with an oil outlet 12 on the motor flange.

Further, the upper portion of the housing is provided with a wire outlet member 10, and the turns are connected to terminals of the wire outlet member through the bearing fixing bracket.

The working principle is as follows: hydraulic oil enters the lower end cover cavity of the motor through the oil inlet 11 on the motor flange 3, and after the lower end cover cavity is filled with the hydraulic oil, the hydraulic oil enters the housing cavity and the upper end cover cavity through the through holes on the motor flange 3 along with the continuous entering of the hydraulic oil, so that the whole motor is filled with the hydraulic oil. The heat generated by the winding when the motor operates is taken away by the hydraulic oil. The bearings at the two ends of the motor are lubricated, and heat generated during operation can be taken away through hydraulic oil, so that the normal operation of the motor can be ensured, and the performance of the motor can be improved. The gear pump 2 is driven by the motor to operate, hydraulic oil is converted into high-pressure oil, an oil discharge port 14 of the gear pump is communicated with an oil outlet 12 on the motor flange 3, and the high-pressure oil is pumped out through the oil outlet 12 on the motor flange.

The whole motor is simple and compact in structure, can radiate heat for the motor, lubricate a bearing, realize normal operation of the motor and improve the performance of the motor, and can realize the function of the pump to well combine the motor and the pump.

The above list is only the preferred embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.

Claims

1. An oil-immersed motor structure is characterized in that: the motor comprises a shell, an upper end cover, a lower end cover, a rotor, a winding stator core and a gear pump; an upper end cover and a lower end cover are respectively fixed at two ends of the shell, the shell and the lower end cover are connected through a motor flange, an oil inlet and an oil outlet are arranged on the motor flange, and a plurality of through holes are formed in the motor flange and enable a shell cavity of the motor to be communicated with a cavity of the lower end cover; the lower end cover cavity is internally fixed with a gear pump, the rotor and the winding stator core are arranged in the casing, and the rotating shaft of the rotor penetrates through the motor flange to be connected to the gear pump.

2. An oil immersed motor structure according to claim 1, wherein: the motor is characterized in that a bearing fixing support is arranged in the shell cavity, the bearing fixing support is arranged on one side, close to the upper end cover, of the rotor, the bearing fixing support is fixed with the motor flange through bolts, one end of a rotating shaft of the rotor is supported on the motor flange through a supporting bearing, and the other end of the rotating shaft of the rotor is supported on the bearing fixing support through the supporting bearing.

3. An oil-filled electric machine structure according to claim 1 or 2, characterized in that: and an oil discharge port of the gear pump is communicated with an oil outlet on the motor flange.

4. An oil immersed motor structure according to claim 2, wherein: and the upper part of the shell is provided with a wire outlet component, and the wire turns penetrate through the bearing fixing bracket and are connected to a wiring terminal of the wire outlet component.

5. An oil immersed motor structure according to claim 1, wherein: and the lower end cover, the motor flange, the shell and the upper end cover form a motor sealing cavity.