CN201341046Y

CN201341046Y - Ventilation structure of direct current motor

Info

Publication number: CN201341046Y
Application number: CNU2008202376955U
Authority: CN
Inventors: 刘吉荣
Original assignee: WUXI HEC ELECTRIC MACHINERY CO Ltd
Current assignee: Jiangsu Baiteng patent operating center Co. Ltd.
Priority date: 2008-12-31
Filing date: 2008-12-31
Publication date: 2009-11-04
Anticipated expiration: 2018-12-31

Abstract

A ventilation structure of direct current motor comprises an armature iron core (1), bars (6) and a shaft (7), wherein the bars (6) are evenly distributed and welded on the circumference of the shaft (7), and the armature iron core (1) is formed by stacking armature punching sheets (2), and is fixed on the shaft (7) through the bars (6), wind screens (4, 5) are arranged among the bars (6), one ends of the wind screens (4, 5) are connected with each other, and the wind screen (4) can form an inclination angle with the axial direction, and the wind screen (5) can form a vertical angle with the axial direction, at least a rotor ventilating duct plate (3) is arranged between the armature punching sheets (2), and at least a rotor ventilating duct spacer (8) is arranged on the rotor ventilating duct plate (3) along the circumferential direction, and the middle upper portion of the rotor ventilating duct spacer (8) is provided with a corner. A direct current motor with the novel ventilation structure has excellent radiation effect, is beneficial for the long term continuous operation, and has positive significances for prolonging the service life of the motor.

Description

The aeration structure of direct current machine

Technical field

The utility model relates to motor, relates in particular to a kind of aeration structure of direct current machine.

Background technology

Power of motor is at 1300～2700KW, motor focuses on 15000KG～36000KG, the class direct current machine of diameter of shaft between 250～360mm, when producing high-power and torque, also can bring higher heat load, therefore, how effectively heat radiation reduces the temperature rise of motor internal, especially the temperature rise of armature, become such motor to more at a high speed, one of the bottleneck of more high-power development.In the heat dissipating method that existing direct current machine adopts, heat radiation wind directly passes through armature by axial ventilation hole, and short time of contact with armature, area of dissipation is also little, and radiating effect is not very desirable.

The content of utility model

The applicant is at the unfavorable problem of aeration structure radiating effect of present direct current machine, having carried out research improves, a kind of aeration structure of direct current machine is provided, the mode that adopts axial ventilation and radial ventilation to combine, do not increasing excess loss, do not influencing under the prerequisite of motor performance and make drafting efficiency obtain to increase exponentially, make motor can tackle long continuous over loading operating mode operation, and prolonged the useful life of motor to a certain extent.

The technical solution of the utility model is as follows:

The aeration structure of direct current machine comprises armature core 1, muscle 6 and axle 7, and muscle 6 evenly distributes and is welded on the circumference of axle 7, and armature core 1 is laminated by armature stamping 2 to be formed, and is supported and fixed on the axle 7 by muscle 6; Be provided with

deep bead

4,5 between the muscle 6, an end of

deep bead

4,5 is connected, deep bead 4 with axially become the angle of inclination, deep bead 5 becomes vertical angle with axial; Be provided with at least one rotor ventilation frid 3 between the armature stamping 2.

Further:

Along the circumferential direction be provided with at least one rotor ventilation slotted vane 8 on the described rotor ventilation frid 3.

There is a turning middle and upper part of described rotor ventilation slotted vane 8.

Useful technique effect of the present utility model is:

The mode that the utility model adopts axial ventilation and radial ventilation to combine, the drafting efficiency height, radiating effect is good, and motor can be moved by long time continuous working, to positive meaning is arranged the useful life that prolongs motor.

Description of drawings

Fig. 1 is overall structure figure of the present utility model.

Fig. 2 is that the A of Fig. 1 is to view.

Fig. 3 is the B-B sectional structure chart of Fig. 1.

Fig. 4 is the C-C sectional structure chart of Fig. 3.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described further.

Fig. 1 is overall structure figure of the present utility model.

Fig. 2 is that the A of Fig. 1 is to view.

As shown in Figure 1 and Figure 2, the aeration structure of direct current machine, comprise armature core 1, muscle 6 and axle 7, the quantity of muscle 6 is 6 (Fig. 2 is the view that has intercepted half in the present embodiment, can't see all), it evenly distributes and is welded on the circumference of axle 7, and armature core 1 is supported and fixed on the axle 7 by muscle 6.Armature core 1 is laminated by armature stamping 2 to be formed, and is provided with a rotor ventilation frid 3 every several armature stampings 2.Be provided with

deep bead

4,5 between the muscle 6, an end of

deep bead

4,5 is connected, and deep bead 4 is installed with axially becoming the angle of inclination, and deep bead 5 is installed with axially becoming vertical angle.

The whole wind path of this aeration structure is shown in the direction of arrow among Fig. 1.This aeration structure has increased deep bead 4 and deep bead 5 between muscle 6, since air quantity and blast by driving end in the process of non-transmision end transmission (shown in Fig. 1 from right to left), can progressively reduce, at this moment just must improve blast by reducing draught area, and deep bead 4 just can reach this raising blast, evenly the effect on cooling surface unshakable in one's determination.Wind is not directly by flowing out between the muscle 6, but radially flow out in the space that under the dredging of

deep bead

4,5, separates by the rotor ventilation frid 3 in the armature core 1, rotor ventilation frid 3 is distributed in unshakable in one's determination middle every an iron leg heart, thereby takes away the heat that armature core 1 produces.Make heat radiation wind flow through each rotor ventilation frid 3 in the armature core 1 equably in order to reach, deep bead 4 must be from the horizontal by certain angle, and this angle is about 20 degree in the present embodiment.Different unshakable in one's determination long armatures corresponding respectively the deep bead of different size.

Fig. 3 is the B-B sectional structure chart of Fig. 1.

Fig. 4 is the C-C sectional structure chart of Fig. 3.

As shown in Figure 3, Figure 4, every an iron leg heart one rotor ventilation frid 3 is just arranged in the middle of the armature core, the effect of rotor ventilation frid 3 is exactly to support radial ducts, thereby reaches the effect that makes wind more evenly pass through the armature core surface.Along the circumferential direction be provided with several rotor ventilation slotted vanes 8 on the rotor ventilation frid 3, it evenly distributes on the circumferencial direction of rotor ventilation frid 3.Each rotor ventilation slotted vane 8 is by several projections and 3 riveted joints of rotor ventilation frid, and remainder spot welding connects.There is a turning middle and upper part of rotor ventilation slotted vane 8, and speed was slowed down to some extent when this made heat radiation wind process, had prolonged the time of contact of wind, thereby had further strengthened cooling effect.

Direct current machine adopts this novel aeration structure, and radiating effect is good, helps the long time continuous working operation, to positive meaning is arranged the useful life that prolongs motor.

The above only is a preferred implementation of the present utility model, is appreciated that those skilled in the art under the prerequisite that does not break away from spirit of the present utility model and design, can make other improvement and variation.

Claims

1. the aeration structure of a direct current machine, comprise armature core (1), muscle (6) and axle (7), muscle (6) evenly distributes and is welded on the circumference of axle (7), armature core (1) is laminated by armature stamping (2) to be formed, and by muscle (6) be supported and fixed on the axle (7) on, it is characterized in that: be provided with deep bead (4,5) between the muscle (6), an end of deep bead (4,5) is connected, deep bead (4) with axially become the angle of inclination, deep bead (5) becomes vertical angle with axial; Be provided with at least one rotor ventilation frid (3) between the armature stamping (2).

2. the aeration structure of direct current machine as claimed in claim 1 is characterized in that: along the circumferential direction be provided with at least one rotor ventilation slotted vane (8) on the described rotor ventilation frid (3).

3. the aeration structure of direct current machine as claimed in claim 2, it is characterized in that: there is a turning middle and upper part of described rotor ventilation slotted vane (8).