CN207339504U - A kind of Flame-Proof Three-Phase Induction Motors end cap - Google Patents

Abstract

A flameproof three-phase asynchronous motor end cover, including an end cover body and a bearing hole located at the center of the end cover body, the end cover body is provided with a bearing chamber arranged along the circumference of the bearing hole, and the bearing chamber is integrated with the end cover body The two axial ends of the bearing chamber protrude outward from the end cover body, and the outer circumference of the end cover body is provided with a number of fixing holes that are matched with the machine base. The top end of the inner surface of the end cover body is combined with the machine base. The flame-proof surface of the mouth is formed along the circumferential direction, and the inner surface of the bearing chamber and the corresponding part of the bearing inner cover form a plane flame-proof surface; the inner and outer surfaces of the end cover body are provided with reinforcing ribs, and the reinforcing ribs are in the shape of radial distribution. The end cover of the flameproof three-phase asynchronous motor adopts the integrated arrangement of the bearing chamber and the end cover body, which makes the assembly easy, reduces the accumulated error between the end cover body and the bearing chamber during assembly, and effectively reduces the occurrence of shaft holding; The reinforced rib structure not only increases the strength of the end cover, but also improves the heat dissipation capacity.

Description

A flameproof three-phase asynchronous motor end cover

technical field

The utility model belongs to the technical field of a high-voltage explosion-proof three-phase asynchronous motor, in particular to an end cover of an explosion-proof three-phase asynchronous motor.

Background technique

With the development of electrical automation, three-phase asynchronous motors are also widely used. The end cover is one of the key structural parts of the motor, especially the end cover of the flameproof motor is used as a flameproof casing, which not only plays the role of flameproof, but also is used as a structural part for installing bearings, so its strength and structure are relatively high. High requirements, the existing steel plate end cover is complicated to assemble, poor in heat dissipation, and high in manufacturing cost.

Contents of the invention

The purpose of the utility model is to solve the above existing problems and provide a flameproof three-phase asynchronous motor end cover, which solves the problems of complicated assembly, poor heat dissipation capacity and high manufacturing cost of the existing end cover.

In order to solve the above technical problems, the technical solution adopted by the utility model is: the end cover of the flameproof three-phase asynchronous motor includes an end cover body and a bearing hole located at the center of the end cover body, and the end cover body is provided with a The bearing chamber is arranged in the circumferential direction of the bearing hole. The bearing chamber is integrated with the end cover body, and the axial ends of the bearing chamber protrude outward from the end cover body. There are multiple A fixed hole for installation and matching with the machine base, the top end of the inner surface of the end cover body and the joint surface of the machine base form a flameproof flameproof surface along the circumferential direction, and the inner surface of the bearing chamber and the corresponding part of the bearing inner cover form a plane flameproof surface surface; the inner surface and the outer surface of the end cover body are provided with reinforcing ribs, and the reinforcing ribs are radially distributed.

An axial oil injection hole is provided at the corresponding position between the bearing chamber and the oil injection groove on the bearing inner cover, and the oil injection hole communicates with the oil injection groove, and the oil injection hole is a through hole; the outer circumference of the bearing hole is provided with a plurality of installation holes , and the mounting hole is a through hole.

The inner and outer surfaces of the end cover body are provided with a plurality of main reinforcing ribs along the radial direction, and auxiliary reinforcing ribs are arranged between adjacent main reinforcing ribs and radially distributed outwards centered on the center of the end cover.

The outer end cover of the end cover body is provided with a temperature measuring hole, and the temperature measuring hole is a blind hole.

The end cap body is made of cast iron.

The beneficial effects of the utility model are: the end cover of the flameproof three-phase asynchronous motor adopts the integration of the bearing chamber and the end cover body, cancels the original bearing seat installation structure, makes the assembly easy, and the end cover body and the bearing chamber are separated during assembly. The cumulative error is reduced, which effectively reduces the occurrence of shaft holding; the rib structure on the inner and outer end covers not only increases the strength of the end cover, but also improves the heat dissipation capacity, which effectively reduces the bearing temperature; in addition, the use of cast iron material reduces manufacturing costs and improves production efficiency. improve.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic structural view of the inner surface of the end cap of the present invention;

Fig. 3 is a schematic structural view of the outer surface of the end cover of the present invention.

Detailed ways

The utility model provides a flameproof three-phase asynchronous motor end cover, as shown in Figure 1 to Figure 3, the flameproof three-phase asynchronous motor end cover includes an end cover body 1 and a Bearing hole, the end cover body 1 is provided with a bearing chamber 5 arranged along the circumference of the bearing hole, the bearing chamber 5 is integrated with the end cover body, and the axial ends of the bearing chamber protrude outward from the end cover The body is set, and the outer circumference of the end cover body is provided with a plurality of fixing holes 6 that are installed and matched with the machine base. The top end of the inner surface 3 of the end cover body and the joint surface of the machine base form a flameproof surface 2 along the circumference. , the inner surface 3 of the bearing chamber corresponds to the bearing inner cover to form a plane explosion-proof surface 4 . The integrated structure of the end cover body and the bearing chamber 5 is adopted, and the original bearing seat installation structure is cancelled, which simplifies the assembly, and at the same time, only the explosion-proof plane corresponding to the inner surface of the bearing chamber 5 is left on the explosion-proof surface near the bearing hole. Surface 4, the size of the explosion-proof surface is reduced, the accumulated error of the end cover and the bearing chamber 5 is reduced during assembly, and the occurrence of shaft holding is effectively reduced. In this embodiment, the end cover body is made of cast iron, which not only reduces the manufacturing cost, but also improves the production efficiency.

In order to strengthen the strength of the end cover body, reinforcing ribs are provided on the inner surface 3 and the outer surface of the end cover body, and the reinforcing ribs are radially distributed; the inner surface 3 and the outer surface of the end cover body are all along the A plurality of main reinforcing ribs 7 are arranged in the radial direction, and auxiliary reinforcing ribs 8 are arranged radially outwards with the center of the end cover as the center between the adjacent main reinforcing ribs 7. The structure of the reinforcing ribs can reduce the vibration of the motor and enhance the The strength of the end cover, while the heat dissipation capacity is improved, effectively reducing the bearing temperature. In addition, the bearing chamber 5 is located above the bearing hole and corresponding to the oil filling groove on the inner cover of the bearing. An axial oil filling hole 10 is provided. The oil filling hole 10 communicates with the oil filling groove, and the bearing can be lubricated through the oil filling groove during use. The oil injection hole 10 is a through hole; the outer circumference of the bearing chamber 5 is provided with a plurality of installation holes, and the installation holes are through holes. The outer circumference of the bearing chamber 5 is also provided with a plurality of mounting holes 9, and the mounting holes 9 are through holes; and for the convenience of monitoring and measuring the bearing temperature, a temperature measuring hole is also provided on the outer surface of the bearing chamber 5 11, and the temperature measuring hole 11 is a non-through hole, as shown in Fig. 2 and Fig. 3 .

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. The utility model does not depart from the spirit and scope of the utility model There will also be various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and equivalents.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear" and the like are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the The description does not indicate or imply that the device or element referred to must have a specific orientation, be configured for a specific orientation, and operate, so it should not be construed as limiting the protection content of the present utility model.

Claims (5)

1. A flameproof three-phase asynchronous motor end cover, comprising an end cover body and a bearing hole located at the center of the end cover body, characterized in that: the end cover body is provided with a bearing chamber arranged along the circumference of the bearing hole , the bearing chamber is integrated with the end cover body, and the axial ends of the bearing chamber protrude outward from the end cover body, and the outer circumference of the end cover body is provided with a plurality of fixing holes that are matched with the machine base , the top end of the inner surface of the end cover body and the joint surface of the machine base form a flameproof surface along the circumference, and the inner surface of the bearing chamber and the corresponding position of the bearing inner cover form a plane explosion-proof surface; the inner surface of the end cover body Reinforcing ribs are provided on the inner and outer surfaces, and the reinforcing ribs are radially distributed. 2. A flameproof three-phase asynchronous motor end cover according to claim 1, characterized in that: the bearing chamber is provided with an axial oil injection hole corresponding to the oil injection groove on the bearing inner cover, and the oil injection hole is connected to the The oil injection groove is connected, and the oil injection hole is a through hole; the outer circumference of the bearing hole is provided with a plurality of installation holes, and the installation holes are through holes. 3. A flameproof three-phase asynchronous motor end cover according to claim 2, characterized in that: the inner surface and the outer surface of the end cover body are provided with a plurality of main reinforcing ribs along the radial direction, and Adjacent main ribs are provided with sub-ribs radially distributed outwards with the center of the end cover as the center. 4. A flameproof three-phase asynchronous motor end cover according to claim 3, characterized in that: the outer end cover of the end cover body is provided with a temperature measuring hole, and the temperature measuring hole is a blind hole. 5. A flameproof three-phase asynchronous motor end cover according to claim 4, characterized in that: the end cover body is made of cast iron.