Single motor front and rear axle drive electric tractor

Abstract

The invention discloses an electric tractor driven by a single-motor front and rear axles, including a car body, a control device, a steering wheel, a battery pack, front and rear axles, front and rear wheels, and a traction object connection device. It is characterized in that: the front axle and There is a power-adjustable motor at both ends of the shaft between the rear axles. The front end of the motor shaft is connected to the differential drive shaft of the front axle through a "cross" shaft; the rear end of the motor shaft is connected to the worm gear through a coupling. The worm is connected to drive, and the worm wheel of the worm gear is fixed to the shaft of the rear axle; the upper walls of both ends of the front axle are provided with "T" shaped sliders, and the corresponding positions of the "T" shaped sliders are equipped with horizontal electromagnetic push-pull devices; A clutch is provided at the connecting part of the gear and the worm of the worm gear. The tractor, on the basis of maintaining the automatic control of steering, forward and reverse in the existing technology, realizes the front and rear wheel drive through a motor, and can adjust the power according to no-load, light-load and heavy-load, so that the body can be shortened. , small turning radius, power saving, low noise.

Description

technical field [0001] The invention relates to an improvement of an electric tractor, in particular to an electric tractor driven by a single motor with front and rear axles. Background technique [0002] In the current high school teaching, the school encourages students to take some time as much as possible to do some social practice investigations, get in touch with social practice, discover problems, solve problems, and develop ideas. Through investigation and research, it can be seen that the current electric tractor generally includes front and rear axles, front and rear wheels, cab, steering device, reversing device, undercarriage, DC motor, buffer and traction load connection device. The upper part of the frame is equipped with a battery pack, and the DC motor is installed on the front side of the bottom of the frame. The turning radius is too large, which affects the scope of application. Especially for airport tractors, due to the limited width of the runway, it ...

AI Technical Summary

Problems solved by technology

Through investigation and research, it can be seen that the current electric tractor generally includes front and rear axles, front and rear wheels, cab, steering device, reversing device, undercarriage, DC motor, buffer and traction load connection device. The upper part of the frame is equipped with a battery pack, and the DC motor is installed on the front side of the bottom of the frame. The turning radius is too large, which affects the scope of application. Especially for airport tractors, due to the limited width of the runway, it is inconvenient to turn. The second is that a motor is used, and the power of the motor cannot be adjusted, which leads to the phenomenon of a large horse-drawn car when it is empty, resulting in a waste of electric energy; third, because it is front-wheel drive or rear-wheel drive, In the case of special road conditions, the car will be parked; the fourth is that there is no noise reduction device, resulting in high noise

[0003] It can be seen through searching that in order to change the deficiencies of the above technologies, such as Chinese patent 200810143814.5, discloses a scheme in which two motors drive the front and rear wheels respectively, the front motor drives the front wheels through the reducer, and the rear motor drives the rear wheels through the reducer , the shortcomings of this design are: first, because the two motors are driven separately, the synchronization is poor, resulting in the consumption of torque; second, because the two motors are installed on the same axis, the possibility of the maximum shortening of the frame is limited; Turning is still achieved solely by the swing of the front wheels and the effect of the differential, so the possibility of further reduction in the turning radius is limited

At present, there is no report on an electric tractor that can drive the front and rear wheels through one motor and can greatly reduce the turning radius.

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