Electric vehicle, gearbox and its lubricating structure

Abstract

The invention discloses an electric vehicle, a speed reduction box and a lubricating structure thereof. According to the lubricating structure, a longitudinal mounting hole is formed in the middle of a mounting basin at the top of a box body and penetrates into the box body from top to bottom; an input shaft is mounted in the longitudinal mounting hole through a conical bearing A, a conical bearing B and a bearing frame; the upper end of the input shaft is connected with a driving motor; the bearing frame is fixed in the longitudinal mounting hole; the input shaft is mounted in a shaft hole of the bearing frame through the conical bearing A and the conical bearing B which are oppositely arranged up and down; an oil seal is mounted between the input shaft and an inner flange to carry out oil sealing between the conical bearing A and the conical bearing B; a first channel is formed in the side wall of the longitudinal mounting hole and is horizontally communicated with the interior of the box body and the longitudinal mounting hole; an oil cup communicated with the first channel is fixed in the box body. According to the lubricating structure, lubricating oil is thrown into the oil cup in a rotating process by a bull wheel; the lubricating oil collected by the oil cup flows into the shaft hole of the bearing frame to lubricate the conical bearing A.

Description

technical field [0001] The invention relates to an electric vehicle, a reduction box and a lubricating structure thereof. Background technique [0002] Electric vehicles are widely used due to their low noise, no exhaust, simple maintenance, easy operation, and superior traction performance. However, electric vehicles require a lot of power to provide energy. very critical. The driving system of an electric vehicle includes axles, wheels, frame and suspension. The driving motor transmits power to the wheels through the reduction box and the driving axle. In the prior art, the driving motor is generally arranged horizontally (that is, the motor shaft is horizontal). , such as the structures disclosed in patent documents such as CN102518780A, CN202944154U, CN202753777U, CN202753775U, etc., the motor shaft is parallel to the axle shaft, so that the transmission structure of the reduction box is relatively simple and convenient for assembly and debugging. [0003] The patent d...

AI Technical Summary

Problems solved by technology

In the above structure, although the differential gear part and the reducer part are respectively located in the two box spaces, the lubricating oil in the two box spaces can communicate with each other, and the structure still adopts the horizontal setting of the drive motor

Moreover, this structure is also inconvenient for the gap adjustment of the bevel gear transmission pair

[0004] The arrangement structure of the above-mentioned horizontal drive motor will occupy a large plane space at the bottom of the vehicle, which seriously affects the effective use of the limited space on electric vehicles, especially some small engineering vehicles.

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