CN201717714U

CN201717714U - Enclosed AC variable frequency motor for engineering vehicle

Info

Publication number: CN201717714U
Application number: CN2010201787191U
Authority: CN
Inventors: 王志良
Original assignee: CHANGZHOU HUASHENG MOTOR FACTORY
Current assignee: Changzhou Huasheng Motor Co., Ltd.
Priority date: 2010-04-30
Filing date: 2010-04-30
Publication date: 2011-01-19
Anticipated expiration: 2020-04-30

Abstract

The utility model relates to the field of a driving device of an engineering vehicle, in particular to an enclosed AC variable frequency motor for an engineering vehicle, which comprises a shell, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are arranged at two ends of the shell; a stator is arranged on the inner wall of the shell; a rotor is connected on a rotating shaft and arranged in the stator; the front end of the rotating shaft is provided with a front-end support bearing which is connected with the front end cover; the rear end of the rotating shaft is provided with a rear-end support bearing which is connected on the rear end cover; the shell is open at two ends and enclosed on the whole body; and the outer surface of the shell is provided with a plurality of radiating ribs. By adopting the AC motor with the enclosed shell for the engineering vehicle, the outside dust, mud water or other foreign matters can be effectively prevented from entering the motor to damage internal components of the motor, the service life of the motor is prolonged, and the fault rate of the motor is reduced.

Description

The closed alternating-current variable frequency motor of engineering vehicle

Technical field

The utility model relates to the drive unit field of engineering vehicle, the closed alternating-current variable frequency motor of particularly a kind of engineering vehicle

Background technology

At present, the housing of motors such as traction electric machine that uses on engineering vehicle and Oil pump electrical machinery is open type, the advantage of open type is that housing is better relatively to the motor internal heat dispersion, but open type exists and allows dust, the grains of sand, moisture etc. enter motor section easily, when dust, the grains of sand, moisture etc. are adsorbed on the parts such as coil in the motor, parts such as coil are equaled to have formed impurity layer, thereby the heat radiation and the operating characteristic of each parts self have been influenced, quickened the aging of each parts, thereby shortened the useful life of motor; Though some motors are arranged for closed, but its housing itself is made up of steel pipe, though the structure of this housings close has intercepted extraneous dust, the grains of sand, moisture etc. and has entered motor internal, but such radiating effect as a result is very poor, motor is very fast to be damaged under the operational environment of high temperature, and shorten useful life too.

Summary of the invention

The utility model is at above-mentioned the deficiencies in the prior art, and designing a kind of housing is enclosed housing, and is provided with the closed alternating-current variable frequency motor of engineering vehicle of radiating ribs on housing or end cap.

The utility model is achieved through the following technical solutions:

The closed alternating-current variable frequency motor of engineering vehicle, front end housing and rear end cap that it comprises housing and is arranged on the housing two ends, stator is arranged on the inwall of housing, rotor is connected in the rotating shaft, place the inside of stator, the front end of rotating shaft is provided with the front end block bearing, the front end block bearing is connected with front end housing, the rear end of rotating shaft is provided with the rear end block bearing, the rear end block bearing is connected on the rear end cap, described housing is a both ends open, and the housing of whole body sealing is provided with some radiating ribs on the outer surface of housing.

Described radiating ribs is arranged on the outer surface of housing vertically or radially.

Also be provided with radiating ribs on described front end housing or the rear end cap.

The encoder bearing is arranged in the rotating shaft in the block bearing outside, rear end.

Described rear end cap is provided with the bearing cap that shields.

The utility model has realized that by above technical scheme a kind of housing is the engineering vehicle alternating current machine of closed shell, adopt enclosed housing can effectively prevent extraneous dust, muddy water or other foreign matters enter motor internal the motor internal member are caused damage, prolonged the useful life of motor, reduced the failure rate of motor, the radiating ribs that on the outer surface of housing and end cap, is provided with simultaneously, increased the area of dissipation of motor, can be effectively the heat of motor internal be distributed, improved the service behaviour of motor, we also are provided with the rear end block bearing of bearing load separately, the encoder bearing is bearing load no longer, has prolonged encoder useful life.

Description of drawings

Fig. 1 is a cutaway view of the present utility model,

Fig. 2 is a profile schematic diagram of the present utility model,

1 is rotating shaft among the figure, and 2 is front end housing, and 3 is housing, and 4 is rotor, and 5 is stator, 6 is rear end cap, and 61 is the block bearing chamber, and 62 is the encoder bearing bore, and 7 is the rear end block bearing, and 8 is the encoder bearing, 9 is bearing cap, and 1O is a screw, and 11 is briquetting, and 12 is radiating ribs, and 13 is the front end block bearing.

Embodiment

Below in conjunction with accompanying drawing the utility model is further specified,

The closed alternating-current variable frequency motor of engineering vehicle shown in Fig. 1 to 2, front end housing 2 and rear end cap 6 that it comprises housing 3 and is arranged on housing 3 two ends, stator 5 is arranged on the inwall of housing 3, rotor 4 is connected in the rotating shaft 1, place the inside of stator 5, the front end of rotating shaft 1 is provided with front end block bearing 13, front end block bearing 13 is connected with front end housing 2, the rear end of rotating shaft 1 is provided with rear end block bearing 7, rear end block bearing 7 is connected on the rear end cap 6, described housing 3 is a both ends open, the housing 3 of whole body sealing, be provided with some radiating ribs 12 on the outer surface of housing 3, described radiating ribs 12 is arranged on the outer surface of housing vertically, and same we also can be disposed radially radiating ribs 12 on the outer surface of housing 3, in order to reach best radiating effect, we can also also be provided with radiating ribs 12 on front end housing 2 or rear end cap 6, further increase the area of dissipation of motor integral body, reach the radiating effect an of the best.

We are arranged on encoder bearing 8 in the rotating shaft 1 in rear end block bearing 7 outsides; and it is compressed by briquetting 11; guarantee the reliability that is connected of encoder bearing and rotating shaft; above-mentioned set-up mode; make encoder away from the environment of the high temperature high-intensity magnetic field in the housing 3; the accuracy and the useful life that has prolonged encoder of the work of encoder have been improved; we are provided with the bearing cap that shields on rear end cap; bearing cap is protected encoder; prevent that external substance from causing damage to encoder; simultaneously after encoder breaks down; we only need open bearing cap and can change encoder; need not whole motor is disintegrated, saved the time of the device that alternates coding, device drops to minimum to the influence of producing with alternating coding.

The utility model is made an enclosed housing by the housing of alternating-current variable frequency motor that existing engineering vehicle is used, prevented the dust in the use, muddy water or other foreign matters enter into motor internal, motor internal spare is caused damage, prolonged the useful life of motor, reduced the failure rate of motor, the radiating ribs that on the outer surface of housing and end cap, is provided with simultaneously, increased the area of dissipation of motor, can be effectively the heat of motor internal be distributed, improved the service behaviour of motor, we also are provided with the rear end block bearing of bearing load separately, and the encoder bearing is bearing load no longer, have prolonged encoder useful life.

Claims

1. the closed alternating-current variable frequency motor of engineering vehicle, front end housing and rear end cap that it comprises housing and is arranged on the housing two ends, stator is arranged on the inwall of housing, rotor is connected in the rotating shaft, place the inside of stator, the front end of rotating shaft is provided with the front end block bearing, the front end block bearing is connected with front end housing, the rear end of rotating shaft is provided with the rear end block bearing, the rear end block bearing is connected on the rear end cap, it is characterized in that: described housing is a both ends open, and the housing of whole body sealing is provided with some radiating ribs on the outer surface of housing.

2. the closed alternating-current variable frequency motor of engineering vehicle according to claim 1, it is characterized in that: described radiating ribs is arranged on the outer surface of housing vertically or radially.

3. the closed alternating-current variable frequency motor of engineering vehicle according to claim 1 is characterized in that: also be provided with radiating ribs on described front end housing or the rear end cap.

4. the closed alternating-current variable frequency motor of engineering vehicle according to claim 1 is characterized in that: the encoder bearing is arranged in the rotating shaft in the block bearing outside, rear end.

5. the closed alternating-current variable frequency motor of engineering vehicle according to claim 1, it is characterized in that: described rear end cap is provided with the bearing cap that shields.