CN205356023U - Industry is explosion proof machine for vehicle - Google Patents

Abstract

The utility model discloses an explosion-proof motor for industrial vehicles. The explosion-proof motor includes a box and a rotor located in the box. One end of the box has a driving end cover, and the other end has a non-driving end cover. The rotor is covered with a stator coil, and the outside of the box has a cable lead-in device. The surface of the cable entry device has flameproof threads, one side of the rotor is connected to the end cover of the driving end through the first deep groove ball bearing, and the other side of the rotor is connected to the non-driving end through the second deep groove ball bearing. The end cover is connected, and there is a spring washer between the second deep groove ball bearing and the non-driving end cover. The explosion-proof motor of the utility model not only has good explosion-proof performance by setting the cable lead-in device, but also sets spring gaskets to prevent the motor rotor from moving axially. After finishing the explosion-proof motor shell and its parts of the utility model, a hydraulic test is carried out, the test pressure is 1.5MPa, and the duration is not less than 10s, without leakage and permanent deformation.

Description

Explosion-proof motors for industrial vehicles

technical field

The utility model relates to a motor, in particular to an explosion-proof motor for industrial vehicles.

Background technique

A motor is an electromagnetic device that converts or transmits electrical energy according to the law of electromagnetic induction. Its main function is to generate driving torque, so the motor is mainly used in coal mines, metallurgy, oil and gas, petrochemicals, textiles, city gas, transportation, grain and oil processing, papermaking, medicine, fuel gas stations and other fields.

At present, in some special occasions, the motor is required to be explosion-proof to avoid unnecessary safety accidents when the motor is in use, but the existing motors have poor explosion-proof performance. At the same time, when the motor is working in some humid or dusty places, Due to poor sealing and insufficient protection, conventional motors are prone to dust or water vapor entering the motor, which will lead to motor damage and safety problems.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides an explosion-proof motor for industrial vehicles.

The utility model is achieved through the following technical solutions:

Explosion-proof motors for industrial vehicles, including a box and a rotor located in the box, one end of the box has a driving end cover, the other end has a non-driving end cover, the outer casing of the rotor is provided with a stator coil, and the outside of the box is There is a cable entry device, the surface of the cable entry device has flameproof threads, one side of the rotor is connected to the drive end cover through the first deep groove ball bearing, and the other side of the rotor is connected through the second deep groove ball bearing Connected with the non-driving end cover, there is a spring washer between the second deep groove ball bearing and the non-driving end cover.

In the above-mentioned explosion-proof motor for industrial vehicles, a copper sleeve is installed at one end of the rotor, and the copper sleeve is sleeved on the outside of the first deep groove ball bearing, and is in contact with the end cover of the driving end.

In the above-mentioned explosion-proof motor for industrial vehicles, the radial gap between the rotor and the end cover of the driving end is ≤0.2mm, and the length of the joint surface is ≥12.5mm.

In the aforementioned explosion-proof motor for industrial vehicles, an oil seal is also arranged between the first deep groove ball bearing and the end cover of the driving end.

In the above-mentioned explosion-proof motor for industrial vehicles, the box body and the end cover of the driving end, and the box body and the end cover of the non-driving end all adopt the method of threaded screwing, the method of plane joint or the joint surface of the joint. The bolt connection is tight.

In the above-mentioned explosion-proof motor for industrial vehicles, the other end of the rotor is installed with a snap ring for a shaft.

The beneficial effects achieved by the utility model:

The explosion-proof motor of the utility model has good explosion-proof performance by setting the flameproof thread on the surface of the cable lead-in device, and at the same time, a spring gasket is set to prevent the motor rotor from moving axially.

After finishing the explosion-proof motor casing and its parts of the utility model, a hydraulic test is carried out, the test pressure is 1.5MPa, and the duration is not less than 10s, without leakage and permanent deformation.

Description of drawings

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

Fig. 2 is a sectional view of the utility model.

In the figure: 1. Drive end cover, 2. Box body, 3. Non-drive end cover, 4. First deep groove ball bearing, 5. Rotor, 6. Copper sleeve, 7. Second deep groove ball bearing, 8. Spring gasket, 9. Speed induction disc, 10. Flameproof thread, 11. Stator coil, 12. Cable lead-in device, 13. Oil seal, 14. Snap ring for shaft, 15. Radial clearance.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described. The following examples are only used to illustrate the technical solution of the utility model more clearly, but not to limit the protection scope of the utility model.

As shown in the figure, the explosion-proof motor for industrial vehicles of the present utility model includes a box body 2 and a rotor 5 located in the box body 2, one end of the box body 2 has a driving end cover 1, and the other end has a non-driving end cover 3. The rotor 5 is covered with a stator coil 11, and the outer side of the box body 2 has a cable lead-in device 12. The surface of the cable lead-in device 12 has flameproof threads 10, and the surface of the box body 2 also has flameproof threads. One side of the rotor 5 is connected to the driving end cover 1 through the first deep groove ball bearing 4, and the other side of the rotor 5 is connected to the non-driving end cover 3 through the second deep groove ball bearing 7, There is a spring washer 8 between the second deep groove ball bearing 7 and the end cover 3 of the non-driving end. The box 2, the stator coil 11, the rotor 5, the end cover 1 of the driving end and the end cover 3 of the non-driving end are made of high-quality low-carbon steel.

Specifically, the surface of the box body 2, the surface of the cable lead-in device 12 and the place where the flame-proof thread 10 contacts are all screw-shaped, which increases the flame passage and improves the explosion-proof effect.

A copper sleeve 6 is installed at one end of the rotor 5 , and the copper sleeve 6 is sleeved on the outside of the first deep groove ball bearing 4 and contacts with the end cover 1 of the driving end. The radial gap 15 between the rotor 5 and the drive end cover 1 is ≤0.2mm, and the length of the joint surface is ≥12.5mm. By limiting the radial gap and the length of the joint surface, when the explosive mixture invades the interior and explodes for some reason, it will not cause the explosion of the explosive mixture outside the flameproof enclosure, ensuring the flameproof performance.

An oil seal 13 is also provided between the first deep groove ball bearing 4 and the drive end cover 1 .

The box body 2 and the driving end cover 1, and the box body 1 and the non-driving end cover 3 all adopt threaded screwing, planar jointing or seam joint surfaces, and are fastened with bolts.

The other end of the rotor 5 is equipped with a shaft snap ring 14 and a speed sensing disk 9 .

The above is only the preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and deformations can also be made. And deformation should also be regarded as the protection scope of the present utility model.

Claims (6)

1. An explosion-proof motor for industrial vehicles, including a box body and a rotor located in the box body, one end of the box body has a driving end cover, and the other end has a non-driving end cover, and the outer casing of the rotor is provided with a stator coil, which is characterized in that , there is a cable lead-in device on the outside of the box, and the surface of the cable lead-in device has flameproof threads, one side of the rotor is connected to the end cover of the driving end through the first deep groove ball bearing, and the other side of the rotor is through The second deep groove ball bearing is connected with the non-driving end cover, and there is a spring washer between the second deep groove ball bearing and the non-driving end cover. 2. An explosion-proof motor for industrial vehicles according to claim 1, wherein a copper sleeve is installed at one end of the rotor, and the copper sleeve is set on the outer side of the first deep groove ball bearing, and is connected to the driving end. cover contacts. 3. An explosion-proof motor for industrial vehicles according to claim 2, characterized in that the radial gap between the rotor and the end cover of the driving end is ≤0.2mm, and the length of the joint surface is ≥12.5mm. 4. An explosion-proof motor for industrial vehicles according to claim 1, characterized in that an oil seal is also provided between the first deep groove ball bearing and the end cover of the driving end. 5. An explosion-proof motor for industrial vehicles according to claim 1, characterized in that, the box body and the end cover of the driving end, and the box body and the end cover of the non-driving end are all threaded and planarly engaged The way or the seam joint surface is matched, and the bolts are used for fastening. 6. The explosion-proof motor for industrial vehicles according to claim 1, wherein a snap ring for a shaft is installed at the other end of the rotor.