Independent driving structure for left and right wheel edge motors of pure electric tricycle

Abstract

The utility model discloses a pure electro-tricycle left and right wheel edge motor independent driving structure which comprises a rear axle support, driving motors are arranged at the two ends of the rear axle support, the driving motors are connected with hubs, each driving motor comprises a motor shell and a speed reducer shell, a stator assembly and a rotor assembly are arranged in each motor shell, and the stator assemblies are connected with the speed reducer shells. The rotor assembly is connected with a main shaft, a fixed gear ring, a planet wheel support, a sun gear and a planet gear rotationally connected to the planet wheel support are arranged in the speed reducer shell, the sun gear is connected to the main shaft, the planet wheel support is provided with an output shaft, the output shaft is connected with a hub, and the hub is connected with the planet wheel support. The left hub and the right hub of the tricycle are driven by the independent driving system, the power transmission path is greatly shortened, the structure is more compact, even if the hub on one side slips, driving force can still be provided for the tricycle, and meanwhile the assembling technology and cost of the tricycle driving system are simplified.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric drive technical field, more specifically relates to pure electric tricycle left and right wheel edge motor independent drive structure. BACKGROUND

[0002] In the field of pure electric tricycle electric drive, the current commonly used electric drive structure form all adopts rear seat middle placement motor and speed reducer and through differential and transmission shaft to drive wheel to the left and right, also have the wheel hub motor mode, although simple structure, no intermediate transmission device, but wheel hub motor weight is big, moment of inertia is big, low efficiency, not only influence whole vehicle control performance, increase material cost at the same time, middle placement motor is longer power transmission path, influence transmission efficiency, and manufacturing cost is high. CONTENT

[0003] In view of the deficiency of prior art, the utility model provides a pure electric tricycle left and right wheel edge motor independent drive structure, greatly shorten the power transmission path, structure is more compact, even if unilateral wheel hub skidding still can provide driving force for vehicle, simplify vehicle drive system's assembly process and cost simultaneously.

[0004] To realize above-mentioned purpose, the utility model provides the following technical scheme: pure electric tricycle left and right wheel edge motor independent drive structure, including rear axle support, both ends of rear axle support are provided with drive motor, drive motor connects wheel hub, drive motor includes motor casing and speed reducer casing, stator assembly and rotor assembly are provided in motor casing, main shaft is connected on rotor assembly, fixed gear ring, planetary gear support, sun gear and planetary gear that rotate and connect on planetary gear carrier are provided in speed reducer casing, sun gear is connected on main shaft, output shaft is provided on planetary gear support, output shaft connects wheel hub.

[0005] Further, the planetary gear support is fixed with a planetary gear shaft, and the planetary gear is rotatably connected with the planetary gear shaft.

[0006] Further, the output shaft is threadedly connected with the wheel hub, the end portion of the output shaft penetrates through the wheel hub, and a fixing nut is threadedly connected on the penetrated end portion, and a gasket is arranged between the fixing nut and the wheel hub.

[0007] Further, two bearings are arranged between the output shaft and the speed reducer casing, and a spacer sleeve is arranged between the two bearings.

[0008] Further, a flange support corresponding to the motor casing is arranged on the rear axle support, and the motor casing and the flange support are connected by a plurality of bolts.

[0009] Further, the speed reducer casing and the motor casing are connected by a plurality of bolts.

[0010] Further, the main shaft and the motor housing are provided with a bearing.

[0011] Further, the reducer housing is provided with an integral brake support, the brake support is rotationally connected with a brake cam, the center shaft of the brake cam is connected with a brake cable, the brake cam is hingedly connected with a brake shoe, and the other end of the brake shoe is hingedly connected with the brake support.

[0012] Compared with the prior art, the utility model has the advantages that: the integrated power system composed of the motor, the reducer and the brake is arranged on the two sides of the rear axle support of the pure electric tricycle, all the wheel hubs are driven by independent driving systems, the power transmission path is greatly shortened, the structure is more compact, driving force can be provided for the vehicle even if the single-side wheel hub slips during driving, the driving motor integrates the motor and the reducer, and the assembly process and cost of the vehicle driving system can be greatly simplified. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic view of the left and right wheel edge motor independent driving structure of the pure electric tricycle of the utility model;

[0014] Figure 2 It is an enlarged schematic view of the single-side structure in the left and right wheel edge motor independent driving structure of the pure electric tricycle of the utility model.

[0015] Reference signs: rear axle support 1, driving motor 2, wheel hub 3, motor housing 4, reducer housing 5, stator assembly 6, rotor assembly 7, main shaft 8, fixed gear ring 9, planetary gear support 10, center gear 11, planetary gear 12, output shaft 13, planetary gear shaft 14, fixed nut 15, gasket 16, spacer sleeve 17, flange support 18, brake support 19, brake cam 20, brake shoe 21. DETAILED DESCRIPTION

[0016] In the description of the utility model, it needs to be explained that for the orientation words, such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the utility model.

[0017] In addition, the terms "first", "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first", "second" features can explicitly or implicitly include one or more features, and in the description of the utility model, the meaning of "several", "several" is two or more than two, unless otherwise explicitly specified.

[0018] Referring to Figure 1 and Figure 2 Further illustrate the utility model.

[0019] The pure electric tricycle left and right wheel edge motor independent drive structure, including rear axle support 1, the both ends of rear axle support 1 are provided with drive motor 2, drive motor 2 connects hub 3, drive motor 2 includes motor shell 4 and speed reducer shell 5, stator assembly 6 and rotor assembly 7 are provided in motor shell 4, main shaft 8 is connected on rotor assembly 7, fixed gear ring 9, planetary gear support 10, sun gear 11 and planetary gear 12 that are rotatably connected on planetary gear support 10 are provided in speed reducer shell 5, sun gear 11 is connected on main shaft 8, output shaft 13 is provided on planetary gear support 10, output shaft 13 connects hub 3.

[0020] As Figure 1 and Figure 2 As shown, by setting integrated power system composed of motor, speed reducer and brake on both sides of the rear axle support 1 of pure electric tricycle, all hubs 3 are driven by independent drive system, the power transmission path is greatly shortened, the structure is more compact, even if single-sided hub 3 slips in driving, still can provide driving force for vehicle, since drive motor 2 integrates motor and speed reducer, the assembly process and cost of vehicle drive system can be greatly simplified.

[0021] As Figure 1 and Figure 2 As shown, preferably in the present example, planetary gear shaft 14 is fixed on planetary gear support 10, and planetary gear 12 is rotatably connected with planetary gear shaft 14.

[0022] As Figure 1 and Figure 2 As shown, preferably in the present example, output shaft 13 is threadedly connected with hub 3, the end of output shaft 13 passes through hub 3, and a fixing nut 15 is threadedly connected on the end, and a gasket 16 is arranged between fixing nut 15 and hub 3.

[0023] As Figure 1 and Figure 2 As shown, preferably in the present example, two bearings are arranged between output shaft 13 and speed reducer shell 5, and a spacer sleeve 17 is arranged between the two bearings.

[0024] As Figure 1 and Figure 2 shown, in the preferred embodiment of the present example, the rear axle support 1 is provided with a flange support 18 corresponding to the motor housing 4, and the motor housing 4 and the flange support 18 are connected by a plurality of bolts.

[0025] As Figure 1 and Figure 2 shown, in the preferred embodiment of the present example, the reducer housing 5 and the motor housing 4 are connected by a plurality of bolts.

[0026] As Figure 1 and Figure 2 shown, in the preferred embodiment of the present example, the main shaft 8 and the motor housing 4 are provided with a bearing.

[0027] As Figure 1 and Figure 2 shown, in the preferred embodiment of the present example, the reducer housing 5 is provided with an integral brake support 19, the brake support 19 is rotatably connected with a brake cam 20, the center shaft of the brake cam 20 is connected with a brake steel rope, the brake cam 20 is hingedly connected with a brake shoe 21, and the other end of the brake shoe 21 is hingedly connected with the brake support 19.

[0028] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the scope of the present application is within the protection scope of the present application. It should be noted that for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application are also considered as the protection scope of the present application.

Claims

1. A pure electric tricycle left and right wheel edge motor independent drive structure, characterized in that: The application relates to a rear axle support, both ends of the rear axle support are provided with driving motors, the driving motors are connected with wheel hubs, the driving motors comprise motor housings and reducer housings, stator assemblies and rotor assemblies are arranged in the motor housings, main shafts are connected with the rotor assemblies, fixed gear rings, planetary gear supports, central gears and planetary gears rotatably connected with the planetary gear supports are arranged in the reducer housings, the central gears are connected with the main shafts, output shafts are arranged on the planetary gear supports, and the output shafts are connected with the wheel hubs.

2. The pure electric tricycle left and right wheel edge motor independent drive structure according to claim 1, characterized in that: The planetary gear supports are fixed with planetary gear shafts, and the planetary gears are rotatably connected with the planetary gear shafts.

3. The pure electric tricycle left and right wheel edge motor independent drive structure according to claim 1, characterized in that: The output shafts are threadedly connected with the wheel hubs, the output shafts pass through the wheel hubs, fixed nuts are threadedly connected with the passing ends, and spacers are arranged between the fixed nuts and the wheel hubs.

4. The pure electric tricycle left and right wheel edge motor independent drive structure according to claim 1, characterized in that: Two bearings are arranged between the output shafts and the reducer housings, and a spacer sleeve is arranged between the two bearings.

5. The pure electric tricycle left and right wheel edge motor independent drive structure according to claim 1, characterized in that: Flange supports corresponding to the motor housings are arranged on the rear axle supports, and the motor housings and the flange supports are connected through a plurality of bolts.

6. The pure electric tricycle left and right wheel edge motor independent drive structure according to claim 1, characterized in that: The reducer housings and the motor housings are connected through a plurality of bolts.

7. The pure electric tricycle left and right wheel edge motor independent drive structure according to claim 1, characterized in that: Bearings are arranged between the main shafts and the motor housings.

8. The pure electric tricycle left and right wheel edge motor independent drive structure according to claim 1, characterized in that: Integrated brake supports are arranged on the reducer housings, brake cams are rotatably connected with the brake supports, central shafts of the brake cams are connected with brake steel ropes, brake shoes are hinged on the brake cams, and the other ends of the brake shoes are hinged with the brake supports.

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