Electric wheel used for electric-drive dump truck

Abstract

The invention discloses an electric wheel used for an electric-drive dump truck. The electric wheel comprises a reduction gear box and an electric wheel motor base, an inner toothed ring is arranged at the outer side of a motor base journal of the electric wheel motor base, and a motor is arranged in an inner hole of the motor base journal of the electric wheel motor base; an oil return opening is formed in a motor base flange of the electric wheel motor base, the oil return opening is communicated with an inner chamber of the inner toothed ring, an oil return pipe hole is formed in the box wall of the reduction gear box, an oil return pipe is arranged in the oil return pipe hole, one end of the oil return pipe is communicated with the oil return opening, and the other end of the oil return pipe is communicated with an inner chamber of the reduction gear box; a fixed supporting sleeve is arranged on the inner wall of the reduction gear box, the fixed supporting sleeve is in sealed connection with the inner wall of the reduction gear box through welding lines, and the oil return pipe is located inside the fixed supporting sleeve; the oil return pipe is sleeved with an oil return pipe sleeve, the oil return pipe sleeve is made of elastomeric materials, one end of the an oil return pipe sleeve is closely attached to the oil return pipe, and the other end of the an oil return pipe sleeve is arranged on the fixed supporting sleeve in a sleeving mode. By means of the oil return opening structure of the electric wheel, vibration generated while a gear train and the motor work can be reduced, and leakage of gear lubricating oil can be avoided.

Description

technical field [0001] The invention relates to an electric wheel for an electric transmission dump truck. Background technique [0002] The electric wheel for the electric drive dump truck is installed on the rear axle of the electric drive dump truck through the electric wheel stand. The reduction gear box and the electric turbine base are connected into one body through welding seams, and the reduction gear box and the electric turbine base are horizontally arranged side by side. The gear lubricating oil flows back and forth between the reduction gearbox and the inner cavity of the inner gear ring through the oil return port structure. [0003] At present, the existing structure of the oil return port of the electric wheel reduction gearbox for electric drive dump trucks includes a reduction gearbox and an electric turbine seat. Wherein, there is at least one oil return port on the electric turbine seat, and the oil return port at this place is directly connected to the...

AI Technical Summary

Problems solved by technology

[0004] The structure of the oil return port of the electric wheel reduction gearbox with the above structure has the following disadvantages: the gear train and the motor in the reduction gearbox will vibrate when they work, and the vibration will cause severe impact on the weld between the oil return port of the electric turbine base and the reduction gearbox The structure of the oil return port of the traditional electric wheel reduction gearbox cannot reduce the vibration generated by the gear train and the motor when it is working. Since the weld is located on the outer wall of the reduction gearbox, after the electric wheel has been running for a period of time, the weld at the oil return port has It may be cracked due to fatigue damage, and the gear lubricating oil in the reduction gearbox will seep out along with the cracks. If the leaking oil enters the motor, it will damage the motor, affect the service life of the motor, and cause a safety hazard to the entire electric drive dump truck

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