Hub motor concentric shaft gear reduction transmission system of A ADV electric motorcycle

Abstract

The utility model relates to a hub motor concentric shaft gear reduction transmission system of a motor A ADV electric motorcycle, which aims to solve the problems of large power output noise, insufficient power and complex structure of the existing electric motorcycle, and comprises a motor assembly, a tubular transmission shaft and a gear box. A motor main shaft is a long shaft body, a transmission shaft is installed on the outer side of the motor main shaft through a plurality of bearings, coaxial arrangement is guaranteed, and an adapter disc used for installing a hub is fixed to the transmission shaft. The gear box is located between the adapter disc and the motor assembly, a reduction gear assembly comprising a first-stage reduction gear, a second-stage reduction gear (a large gear and a small gear) and a third-stage reduction gear is arranged in the gear box, and efficient power transmission is achieved. In addition, the system is further provided with a damping device and a brake assembly, and the driving stability and safety are improved; according to the design, compact space layout is achieved, the structural strength is enhanced, the power loading capacity is improved, and the electric motorcycle is suitable for electric motorcycles and other types of electric vehicles and has wide application prospects and popularization value.

Description

Technical Field

[0001] This utility model belongs to the field of motorcycle technology, specifically relating to a concentric shaft gear reduction transmission system for the hub motor of a Mech ADV electric motorcycle. Background Technology

[0002] With the increasing severity of urban traffic congestion and growing environmental awareness, electric motorcycles, as a convenient, fast, easy-to-operate, and environmentally friendly mode of transportation, are gradually becoming one of the main choices for urban residents. Given their significant advantages in reducing carbon emissions and alleviating traffic pressure, electric motorcycles not only meet consumers' needs for convenient travel but also align with modern society's pursuit of green transportation.

[0003] However, in the design and manufacturing of electric motorcycles, achieving efficient power output while maintaining efficient space utilization has always been a key focus and challenge for various companies. Existing power output solutions each have their advantages and disadvantages, but none fully meet ideal application requirements: for example, while a mid-mounted motor with chain drive can provide relatively strong power output, it comes with significant operating noise; hub motors, although relatively compact and easy to optimize vehicle space layout, perform poorly in terms of power output; and side-mounted gear motors, due to their high structural complexity, have not yet achieved ideal feasibility and reliability in practical applications. Therefore, finding an ideal solution that guarantees both efficient power output and efficient use of vehicle space has become an urgent problem to be solved in the industry. Utility Model Content

[0004] This utility model aims to provide a concentric shaft gear reduction transmission system for the hub motor of the Mech ADV electric motorcycle, solving the technical problems of insufficient motor power output and unsatisfactory side-mounted gear motor structure in existing electric motorcycles.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] The Mech ADV electric motorcycle hub motor concentric shaft gear reduction transmission system includes a motor assembly, a drive shaft and a gearbox. The main shaft of the motor assembly is a long shaft body, and the drive shaft is a tubular structure. The drive shaft is mounted on the outside of the long shaft body through several bearings. The drive shaft is coaxial with the long shaft body. An adapter plate is also mounted on the drive shaft. The adapter plate is used to mount the wheel hub.

[0007] The gearbox is located between the adapter plate and the motor assembly. The gearbox is fixed to the end face of the motor assembly. A reduction gear assembly is installed inside the gearbox. The long shaft is connected to the drive shaft through the reduction gear assembly.

[0008] Furthermore, the reduction gear assembly includes a primary reduction gear and a tertiary reduction gear. The primary reduction gear is mounted on a long shaft, and the tertiary reduction gear is mounted on the end of the drive shaft. A gear shaft is also rotatably mounted inside the gearbox. A secondary reduction large gear and a secondary reduction small gear are mounted on the gear shaft. The primary reduction gear meshes with the secondary reduction large gear, and the secondary reduction small gear meshes with the tertiary reduction gear.

[0009] Furthermore, the long shaft, drive shaft, and reduction gear assembly are made of 20CrMnTi material.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] (1) High-efficiency power transmission and space utilization optimization: By adopting a concentric shaft design, the motor shaft and the transmission shaft are placed on the same axis line and a multi-stage reduction gear is used for power transmission, which not only ensures the high efficiency of power output, but also achieves a compact space layout, effectively solving the problem of low space utilization in traditional design schemes;

[0012] (2) Enhanced structural strength and increased power loading capacity: The design of this system strengthens the overall structural strength, making it possible to load a motor with greater power, further improving the performance and applicability of electric motorcycles;

[0013] (3) Noise reduction and improved driving stability: The gear reduction transmission system adopted in this utility model can significantly reduce operating noise. At the same time, the application of the flat fork bracket and shock absorption device improves the stability and comfort of the vehicle during driving.

[0014] (4) Wide applicability: This system is not only applicable to electric motorcycles, but can also be extended to three-wheeled electric motorcycles, four-wheeled electric vehicles and other types of vehicles, and has a wide market application prospect and promotion value;

[0015] (5) Enhanced safety performance: By integrating the brake disc and brake pump into the flat fork structure, this design enhances the vehicle's braking ability and improves driving safety;

[0016] In summary, the concentric shaft gear reduction transmission system for the hub motor of the Mech ADV electric motorcycle proposed in this utility model not only overcomes many problems existing in the prior art, but also provides new ideas and technical support for the development of electric motorcycles, possessing significant innovative advantages and practical application value. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the concentric shaft gear reduction transmission system of the hub motor of the mecha ADV electric motorcycle of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation of the concentric shaft gear reduction transmission system of the hub motor of the Mech ADV electric motorcycle of this utility model. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] The present invention will be further described in detail below with reference to the embodiments.

[0022] like Figure 1 and Figure 2 As shown, here is a specific embodiment 1 of the concentric shaft gear reduction transmission system for the hub motor of the mecha ADV electric motorcycle provided by this utility model:

[0023] The concentric shaft gear reduction transmission system of the hub motor of the mecha ADV electric motorcycle includes a motor assembly 1, a transmission shaft 2 and a gearbox 3. The main shaft of the motor assembly 1 is a long shaft body 4, and the transmission shaft 2 is a tubular structure. The transmission shaft 2 is mounted on the outside of the long shaft body 4 through several bearings 5. The transmission shaft 2 and the long shaft body 4 are arranged coaxially. An adapter plate 6 is also fixedly installed on the transmission shaft 2. The adapter plate 6 is used to install the hub of the tire 7.

[0024] The gearbox 3 is located between the adapter plate 6 and the motor assembly 1. The gearbox 3 is fixed to the end face of the motor assembly 1. A reduction gear assembly is provided inside the gearbox 3. The long shaft 4 is connected to the transmission shaft 2 through the reduction gear assembly.

[0025] The reduction gear assembly includes a primary reduction gear 8 and a tertiary reduction gear 9. The primary reduction gear 8 is mounted on a long shaft 4, and the tertiary reduction gear 9 is mounted on the end of the drive shaft 2. A gear shaft 10 is also rotatably mounted inside the gearbox 3. A secondary reduction gear 11 and a secondary reduction pinion 12 are mounted on the gear shaft 10. The primary reduction gear 8 meshes with the secondary reduction gear 11, and the secondary reduction pinion 12 meshes with the tertiary reduction gear 9. Preferably, the long shaft 4, the drive shaft 2, and the reduction gear assembly are made of 20CrMnTi material.

[0026] The installation of the concentric shaft gear reduction transmission system for the hub motor of the mecha ADV electric motorcycle in this embodiment is as follows: Figure 2 As shown, the horizontal fork structure 100 of the electric motorcycle is located in the middle. In addition, two sets of shock absorbers 101 are installed on the horizontal fork structure 100 and the motorcycle body. The horizontal fork structure 100 is also equipped with a brake disc 102 and a brake pump 103. The brake disc 102 is installed at the end of the drive shaft 2. In this embodiment, the power is output through the motor assembly 1, and then the first-stage reduction gear 8 meshes with the second-stage reduction gear 11, and the second-stage reduction gear 12 meshes with the third-stage reduction gear 9. After multiple reductions, the power is transmitted to the drive shaft 2. The drive shaft 2 drives the adapter plate 6 to rotate, and finally drives the wheel hub and tire 7 to rotate.

[0027] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concentric shaft gear reduction transmission system for a wheel hub motor of an ADV electric motorcycle, characterized in that: The motor assembly, the transmission shaft and the gear box are included, the main shaft of the motor assembly is a long shaft body, the transmission shaft is a tubular structure, the transmission shaft is installed on the outside of the long shaft body through several bearings, the transmission shaft is coaxial with the long shaft body, and an adapter plate is further installed on the transmission shaft, the adapter plate is used for installing a wheel hub; The gear box is located between the adapter plate and the motor assembly, the gear box is fixed on the end face of the motor assembly, a reduction gear assembly is arranged in the gear box, and the long shaft body is in transmission connection with the transmission shaft through the reduction gear assembly.

2. The robotic ADV electric motorcycle wheel hub motor concentric shaft gear reduction transmission system of claim 1, wherein: The reduction gear assembly includes a primary reduction gear and a tertiary reduction gear, the primary reduction gear is installed on the long shaft body, the tertiary reduction gear is installed on the end portion of the transmission shaft, a gear shaft is further rotatably installed in the gear box, a secondary reduction large gear and a secondary reduction small gear are installed on the gear shaft, the primary reduction gear is in mesh with the secondary reduction large gear, and the secondary reduction small gear is in mesh with the tertiary reduction gear.

3. The robotic ADV electric motorcycle wheel hub motor concentric shaft gear reduction transmission system of claim 1, wherein: The long shaft body, the transmission shaft and the reduction gear assembly are made of 20CrMnTi.

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