CN2768283Y

CN2768283Y - Axis seal structure of explosion suppression type three-phase asynchronous motor for mine

Info

Publication number: CN2768283Y
Application number: CN 200420062677
Authority: CN
Inventors: 沈德平; 潘小东; 朱冯伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-07-14
Filing date: 2004-07-14
Publication date: 2006-03-29
Anticipated expiration: 2014-07-14

Abstract

The utility model relates to a shaft seal structure of an explosion suppression type three-phase asynchronous motor for mines. An integral end cover and a shaft sealing ring are tightly combined, and the combination of the integral end cover and the shaft sealing ring has a positioning function, a sealing function and moisture resistance. Outside moisture can not enter a motor easily, and the motor has long service life. The utility model comprises a motor shaft which is sheathed with a bearing, and an inner ring of one end of the bearing contacts the thrust stopping surface of a shaft shoulder of the motor shaft. The utility model is characterized in that the other end of the bearing and the motor shaft are sheathed with the end cover; the inner of the end cover is connected with an inner end cover; the surface of the inner wall of a round ring of the inner end cover contacts an outer ring of the bearing; the end surface of the end cover and the motor shaft are enclosed into a round annular groove on one side of the utility model away from the bearing; the motor shaft is sheathed with a V-shaped shaft sealing ring in the groove.

Description

The shaft seal structure of the flame-proof type threephase asynchronous that mine is used

(1) technical field

The utility model relates to the accessory of threephase asynchronous, is specially the shaft seal structure of the flame-proof type threephase asynchronous that mine uses.

(2) background technology

The shaft seal structure of the flame-proof type threephase asynchronous that existing mine is used is seen Fig. 1, it comprises motor shaft 3, axle 3 is set with bearing 5, the outer cover of bearing 5 is equipped with end cap 1, on the both sides of bearing 5 motor shaft 3, be set with bearing end cover 4 and internal bearing cover 2, be connected with screw between end cap 1 and bearing end cover 4 and the internal bearing cover 2, the outer face of bearing end cover 4 and motor shaft 3 surround annular groove, and motor shaft 3 is set with packing ring 6 in described groove.The shortcoming of this mechanism is exactly that moisture resistance is bad, and to motor, water can enter motor along the faying face between end cap and the described bearing end cover, thereby has influence on the useful life of motor as water projection.

(3) summary of the invention

The shaft seal structure of the flame-proof type threephase asynchronous of using at existing mine, its moisture resistance is bad, be sprayed onto on the motor as water, water can enter motor along the faying face between end cap and described bearing end cover and the described internal bearing cover, thereby have influence on the shortcoming in the useful life of motor, the utility model provides the shaft seal structure of the flame-proof type threephase asynchronous that another mine uses, and its moisture resistance is better, and the useful life of motor is longer.

Its technical scheme is such: it comprises motor shaft, described motor shaft sleeve is equipped with bearing, the shaft shoulder thrust surface of its inner ring contact motor shaft of one end of described bearing, it is characterized in that: at the other end of described bearing, be set with end cap on the described motor shaft, inside at described end cap, end cap connects inner end cap, the outer ring of the circle ring inner wall face contact bearing of described inner end cap, in a side away from bearing, the end face of described end cap and described motor shaft surround annular groove, and in described groove, described motor shaft sleeve is equipped with the V-packing ring.

The utility model adopts after the said structure, whole end cap and packing ring are combined closely, not only play the location but also play the damp proof effect of sealing, extraneous moisture content is difficult for entering motor, the useful life of motor is longer, thereby avoided its end cap of existing shaft seal structure to be divided into end cap, enclosing cover and inner cap three parts, extraneous water is sprayed onto on the motor can enter motor by the faying face between end cap and described bearing end cover, thereby has influence on the shortcoming in the useful life of motor.

(4) description of drawings

Fig. 1 is the structural representation of existing shaft seal structure;

Fig. 2 is a structural representation of the present utility model.

(5) embodiment

See Fig. 2, the utility model comprises motor shaft 1, and motor shaft 1 is set with bearing 2, the shaft shoulder thrust surface of its inner ring contact motor shaft 1 of one end of bearing 2, at the other end of bearing 2, be set with end cap 4 on the motor shaft 1, in the inside of end cap 4, end cap 4 connects inner end cap 3, the outer ring of the circle ring inner wall face contact bearing 2 of inner end cap 3, in the side away from bearing 2, the end face of end cap 4 and motor shaft 1 surround annular groove, in groove, motor shaft 1 is set with V-packing ring 5.

Claims

1, the shaft seal structure of the flame-proof type threephase asynchronous that mine is used, it comprises motor shaft, described motor shaft sleeve is equipped with bearing, the shaft shoulder thrust surface of its inner ring contact motor shaft of one end of described bearing, it is characterized in that: at the other end of described bearing, be set with end cap on the described motor shaft, in the inside of described end cap, end cap connects inner end cap, the outer ring of the circle ring inner wall face contact bearing of described inner end cap, in a side away from bearing, the end face of described end cap and described motor shaft surround annular groove, and in described groove, described motor shaft sleeve is equipped with the V-packing ring.