JP2007020257A - Main motor for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a main motor for vehicle which can be operated under good conditions at all times without shortening the period of overhaul and in which the temperature of an apparatus in the main motor is sustained appropriately and dust is not taken into the motor. <P>SOLUTION: As a means for sustaining the temperature of the apparatus in the main motor appropriately without taking the outer air into the motor and without shortening the period of overhaul, a fan having fan vanes on the inside and outside in the main motor installed on the truck of a vehicle and a plurality of vents on the outer diameter side of a stator core are provided. Consequently, temperature rise in the motor is suppressed and the main motor can be operated under good conditions at all times. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a vehicular main motor, and more particularly to a fully-closed vehicular main motor that does not take outside air into the apparatus.

The vehicular main motor is installed in a vehicle trolley having poor environmental conditions, and takes in outside air to cool a rotor and a stator as in-machine devices while the vehicle is traveling regardless of the environmental conditions. This state is shown in FIG. FIG. 2 is an explanatory view showing an example of the prior art, wherein 1 is a main motor shaft, 2 is a fan attached to the main motor shaft 1, 3 is a stator frame, 4 is an outside air intake, 5 is an exhaust port, 6 Is a rotor and 7 is a stator. In FIG. 2, the main motor is always driven while the vehicle is running. For this reason, since the temperature of the equipment inside the main motor rises, the fan 2 always takes in outside air from the outside air intake 4 to cool the rotor 6 and the stator 7. (For example, Patent Document 1)
Japanese Patent Laid-Open No. 2002-272061

However, such means have the following problems.
The outside air taken in from the outside air intake by the fan contains dust, and when dust accumulates in the stator and rotor due to long-term operation, for example, the rotor air hole is clogged, This may cause a rise in the temperature inside the machine, which may lead to problems such as abnormal overheating.

In order to solve this problem, one solution is to adopt a structure in which the cooling air containing dust is not taken into the machine. The present invention was devised in view of the above-mentioned points, and the object of the present invention is to keep the temperature of the equipment in the main electric motor properly, not to take dust into the equipment, and to shorten the overhaul period. An object of the present invention is to provide a vehicular main motor that can be operated under good conditions at all times.

  In order to achieve the above object, the present invention provides a main motor installed in a bogie of a vehicle, wherein a plurality of air holes not penetrating into the machine are provided on the outer diameter side of the stator core, and is attached to the rotor shaft. The fan has a labyrinth on the outer diameter side to provide a function as a partition for separating the inside of the machine from the outside of the machine, and the fan is provided with a fan vane for circulating air inside the machine. In order to be able to circulate the air in the machine with a single fan and to send cooling air to a plurality of air holes that do not penetrate through the machine provided in the stator core, A fan vane is provided for sending outside air to a plurality of air holes that do not penetrate.

As described above, according to the present invention, a fan having fan vanes inside and outside the machine and a plurality of ventilation holes provided on the outer diameter side of the stator core can suppress an increase in temperature inside the machine, and the main motor can always be connected. Since it can be operated under good conditions, it is extremely useful in practice.

  FIG. 1 is an explanatory view showing an embodiment of the present invention. In FIG. 1, 2 is a fan, 8 is an outside fan vane, 9 is an inside fan vane, 10 is a vent hole, and 11 is a labyrinth. 2 denote parts having the same configuration and function. In FIG. 1, outside air is taken in by a fan 2 provided in a main motor installed on a carriage of a railway vehicle, and outside air is sent to a plurality of ventilation holes 10 that do not penetrate the inside of the machine, and the outside air cools the stator 7. The gas is discharged from the exhaust port 5. In addition, the fan 2 simultaneously causes air circulation inside and plays a role of making the temperature inside the machine uniform.

In the main motor configured as described above, outside air is taken into the plurality of ventilation holes 10 that do not penetrate through the inside of the main motor installed in the vehicle carriage by the fan 2. Although the temperature inside the machine rises due to the operation of the main motor, the stator 7 is cooled by the introduced outside air, and as a result, the heat generation of the entire main motor can be suppressed. In addition, the fan 2 having fan vanes both inside and outside the machine transmits the temperature inside and outside the machine, so that the heat inside the machine can be released outside the machine. As described above, by suppressing the temperature rise in the main motor, the main motor can always be operated under good conditions.

It is explanatory drawing which shows the Example of this invention. It is explanatory drawing which shows an example of the past.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main motor shaft 2 Fan 3 Stator frame 4 Outside air intake 5 Exhaust port 6 Rotor 7 Stator 8 Outer fan vane 9 Inner fan vane 10 Ventilation hole 11 Labyrinth

Claims (1)

  The main motor installed in the bogie of the vehicle is a fully-enclosed main motor that does not take outside air into the machine, and has a plurality of ventilation holes that do not penetrate into the machine on the outer diameter side of the stator core, There is a fan vane for circulating the air in the machine on the iron core side, and a fan vane for sending outside air to the inside of the machine provided on the outer side of the stator core on the opposite side of the iron core and to the air holes that do not penetrate A main motor for a vehicle characterized by having a fan.

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