A traction motor junction box suitable for high voltage levels and its manufacturing method

Abstract

The invention discloses a traction motor junction box suitable for a high voltage class and a manufacture method of the traction motor junction box. The traction motor junction box comprises a box body, a junction box cover plate, a three-phase outgoing line, a three-phase cable wire and pouring sealant, wherein the junction box cover plate covers the box body, both the three-phase outgoing line and the three-phase cable wire enter the box body from the outside and are connected in the box body, and the pouring sealant is poured inside the box body. A three-phase outgoing line outlet through which the three-phase outgoing line passes, a three-phase cable wire outlet through which the three-phase cable wire passes, and a screwing member used for screwing the three-phase cable wire are arranged on the box body. The manufacture method of the junction box comprises the following steps: casting the box body; connecting the three-phase outgoing line with the three-phase cable wire; insulation-wrapping; and pouring and sealing. The junction box disclosed by the invention brings the convenience for sealing and mass production, and is low in cost, reliable in sealing and insulation, and capable of meeting the requirements of high voltage class and small space size during the operation of a traction motor.

Description

technical field [0001] The invention relates to the technical field of motor equipment, in particular to a traction motor junction box suitable for high voltage levels and a manufacturing method thereof. Background technique [0002] In the design of traction motors, due to the requirements of operating conditions, the motors often run at a higher voltage level. At the same time, since the traction motors are generally suspended at the bottom of the vehicle through the bogie, and the space at the bottom of the vehicle is limited, the design dimensions of the traction motors are relatively small. Small, that is, the space size of the traction motor is more restricted, so the traction motor junction box often has space size restrictions. [0003] When the voltage level of the traction motor is high, the creepage distance of the exposed parts where the three-phase lead wires are connected to the three-phase cables is also relatively large. Therefore, it is necessary to reasona...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a traction motor junction box suitable for high voltage levels and its manufacturing method, which can solve the problem of unreliable insulation of the motor junction box when the motor voltage is as high as 4500V and the space size is small

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