Side-hanging-type double-motor driving assembly for electric cart

Abstract

The invention relates to a side-hanging-type double-motor driving assembly for an electric cart. The assembly is composed of a main motor, a vice motor, a reduction box, a gear combination part, a hubbraking disc and a brake block; the assembly is characterized in that the double-motor driving assembly is arranged on a back wheel of the left side of the front portion of the cart, a suspension loop on the front portion of the reduction box is connected with a back fork, and a main motor connection chamber and a vice motor connection chamber are formed in the outer portion of the reduction box;the gear combination part is arranged in the reduction box, a first spline which is matched with a hub is arranged at the front end of an output shaft, and a second spline of the output shaft is tightly matched with a first isolator of a driven gear to form a power output transmission device; a drive gear of the gear combination part is meshed with the driven gear to form a driving mode for driving at the top speed on the normal road, and a vice gear of the gear combination part is meshed with the driven gear at the transmission speed of an intermediate gear, so that a vice motor assistance driving mode under a loading state is formed.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a dual-motor drive assembly of a side-mounted electric two-wheel vehicle. Background technique [0002] Electric vehicles are favored by consumers because of their low carbon, energy saving, and low cost of use. At present, the number of electric vehicles in my country is more than 200 million. After more than ten years of technological progress, the development of electric motorcycles and electric vehicles is gradually emerging. With the continuous expansion of the market, relevant standards for electric motorcycles and electric vehicles are expected to be issued soon. , the user's use requirements are also constantly upgrading. For example, the electric car requires a speed of 75 horses and the quality uncertainty of electric motorcycle racing cars and cargo vehicles. The well-known electric wheel hub motor and differential motor technology, the speed and torque are not variable...

AI Technical Summary

Problems solved by technology

Therefore, technicians will begin to study side-mounted high-speed motors. For example, the patent No. 200610138450.2 is a Chinese invention patent for the driving device of two-wheeled electric vehicles. Ten years ago, a transmission scheme in which the main and auxiliary motors drive the driving gear was proposed. The output shafts of the main motor and the auxiliary motor are used to mesh with the drive gear through their respective gears, but this one-stage transmission cannot allow the auxiliary motor to achieve higher speed and greater output torque (maximum output speed) due to the limitation of the transmission ratio. torque is 70n.m), since the main and auxiliary motors are set in the same direction, in order to install the main and auxiliary motors reasonably, the unit volume of the gearbox has to be increased to increase the production cost. After the frame, the one-way bearing 8, bearing 7, 5 are connected with a drive gear 6, so that the drive gear 6 can only drive the central shaft 9 to rotate, but the central shaft 9 cannot drive the drive gear 6 to rotate, but this technology is practical However, it cannot be realized in application, and technicians should clearly realize that the center shaft 9 and the drive gear 6 are fixedly connected. Although the vehicle is in reverse drive, the center shaft 9 and the drive gear 6 are always running synchronously, and it is impossible to realize Free from reluctance while coasting

In the rear brake design, the patent uses tellurium (typo, it should be: hoof) block 14 to connect with the central shaft 9 through the bearing 13, this design makes it impossible for technicians to combine in practical applications, because there is always a circle outside the bearing The fixed position of the bearing is fixed, but the center shaft 9 is in a rotating state and cannot be connected with the tellurium block 14. At the same time, when the shoe block is in braking, at least one end of the connecting part needs to be rotated to enlarge the outer diameter of the workpiece. Locked to the inner diameter of the hub

[0004] As mentioned above, in actual application of the patented technology of 200610138450.2, there are problems of braking safety, inability to realize one-way sliding function when reversing, failure to maximize output, and high manufacturing costs, which need to be further improved by technical personnel in the field of electric vehicles

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