Adjustable rear axle structure based on electric vehicle

Abstract

The utility model discloses an adjustable rear axle structure based on an electric vehicle, and relates to the technical field of electric tricycles. Comprising an axle tube, the inner wall of the axle tube is rotatably connected with a transmission shaft, the outer wall of the transmission shaft is rotatably connected with a hollow tube, the outer wall of the fixed hub structure is rotatably connected with the inner wall of the hollow tube, and the outer wall of the fixed hub structure is slidably connected with a sliding hub structure. The outer wall of the hollow pipe is fixedly connected with a large spring mounting seat, the side, away from the large spring mounting seat, of the hollow pipe is slidably connected with a supporting arm mounting seat, the rear axle structure is matched with the fixing sleeve through the sliding sleeve, the length can be conveniently adjusted, different cargo carrying requirements are met, the rear axle is matched with a vehicle type, one axle has multiple purposes, and the universality of the vehicle is effectively improved; the production cost of enterprises is reduced, and diversified use scenes are adapted.

Description

Technical Field

[0001] This utility model relates to the field of electric tricycle technology, specifically to an adjustable rear axle structure for electric vehicles. Background Technology

[0002] In the logistics and transportation sector, including electric tricycles and electric cargo trucks, the rear axle of the vehicle needs to cope with different load weights and transportation scenarios. However, traditional electric vehicle rear axles generally have a fixed structure. On the one hand, the existing rear axle length is fixed, making it impossible to adjust the wheelbase according to the load capacity, which makes it difficult to adapt to the transportation needs of different specifications of goods. On the other hand, the fixed structure of the rear axle makes it difficult to match multiple vehicle models. Enterprises need to develop and produce rear axles separately for different models, resulting in high R&D costs and poor product versatility. At the same time, the mounting angle of the support arm of the traditional rear axle is fixed, making it difficult to adjust according to actual road conditions and load distribution. When driving on complex road conditions or under heavy load, the vehicle is prone to uneven stress, which not only affects handling performance but also accelerates the wear of rear axle components and shortens their service life. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides an adjustable rear axle structure for electric vehicles. This adjustable rear axle structure, through its adjustable length and support arm angle design, allows for adjustable length, thereby increasing its applicability. The adjustable support arm mounting structure enhances vehicle handling performance and driving safety.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: an adjustable rear axle structure for electric vehicles, including an axle tube, a drive shaft rotatably connected to the inner wall of the axle tube, a hollow tube rotatably connected to the outer wall of the drive shaft, and further including: a fixed hub structure, the outer wall of the fixed hub structure being rotatably connected to the inner wall of the hollow tube, a sliding hub structure being slidably connected to the outer wall of the fixed hub structure, a large spring mounting seat being fixedly connected to the outer wall of the hollow tube, and a support arm mounting seat being slidably connected to the side of the hollow tube away from the large spring mounting seat;

[0007] Preferably, the fixed hub structure includes a rotating disk, a connecting block is fixedly connected to the inner wall of the rotating disk, a fixed sleeve is fixedly connected to the outer wall of the rotating disk through a limiting rod, a limiting protrusion is fixedly connected to the inner side wall of the fixed sleeve, and a first adjustment hole is opened in the wall of the fixed sleeve. Through the cooperation between the sliding sleeve and the fixed sleeve of the rear axle structure, the length can be easily adjusted to meet different cargo requirements and vehicle model adaptation, realize one axle for multiple uses, effectively improve vehicle versatility, reduce enterprise production costs, and adapt to diverse usage scenarios.

[0008] Preferably, the outer wall of the rotating disk is rotatably connected to the outer wall of the hollow tube, the inner wall of the hollow tube is rotatably connected to the outer wall of the connecting block, the inner wall of the connecting block is fixedly connected to the outer wall of the drive shaft, the outer wall of the limiting rod is fixedly connected to the outer wall of the rotating disk, and the outer wall of the large spring mounting base is fixedly connected to the outer wall of the support arm mounting base.

[0009] Preferably, the sliding hub structure includes a sliding sleeve, a connecting rod is fixedly connected to the outer wall of the sliding sleeve, a limit groove is formed in the wall of the sliding sleeve, a pin is inserted into the outer wall of the sliding sleeve through a second adjustment hole, a limit block is slidably connected to the outer wall of the pin, and a fixing pin is inserted into the inner wall of the pin. The angle can be flexibly adjusted through the support arm mounting seat to optimize the vehicle force according to road conditions and load distribution, so as to make the force uniform, improve handling performance and driving safety, reduce component wear, and extend the overall service life of the vehicle.

[0010] Preferably, the sidewall of the outer wall of the sliding sleeve is slidably connected to the outer wall of the limiting protrusion through a limiting groove, the second adjusting hole is opened in the wall of the sliding sleeve, the outer wall of the pin is inserted into the inner wall of the fixed sleeve through the first adjusting hole, and the outer wall of the limiting block is in contact with the outer wall of the fixed sleeve.

[0011] (III) Beneficial Effects

[0012] This utility model provides an adjustable rear axle structure for electric vehicles. It has the following advantages:

[0013] (I) The rear axle structure can be conveniently adjusted in length by means of the cooperation between the sliding sleeve and the fixed sleeve, so as to meet different cargo carrying needs and vehicle models, realize the multi-purpose use of one axle, effectively improve vehicle versatility, reduce enterprise production costs, and adapt to diverse usage scenarios.

[0014] (ii) The rear axle structure can be flexibly adjusted in angle through the bracket mounting seat, which optimizes the vehicle's stress according to road conditions and load distribution, making the stress uniform, improving handling performance and driving safety, reducing component wear, and extending the overall service life of the vehicle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural diagram of the drive shaft of this utility model;

[0017] Figure 3 This is a schematic diagram of the fixed hub structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the sliding hub structure of this utility model.

[0019] In the diagram: 1. Bridge tube; 2. Drive shaft; 3. Hollow tube; 4. Large spring mounting seat; 5. Support arm mounting seat; 6. Fixed hub structure; 7. Sliding hub structure; 61. Rotating disk; 62. Limiting rod; 63. Connecting block; 64. Fixing sleeve; 65. First adjustment hole; 66. Limiting protrusion; 71. Sliding sleeve; 72. Connecting rod; 73. Limiting groove; 74. Second adjustment hole; 75. Pin; 76. Limiting block; 77. Fixing pin. 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] Please see Figure 1-4 This utility model provides a technical solution: an adjustable rear axle structure for electric vehicles, including an axle tube 1, a drive shaft 2 rotatably connected to the inner wall of the axle tube 1, and a hollow tube 3 rotatably connected to the outer wall of the drive shaft 2. It also includes a fixed hub structure 6, the outer wall of which is rotatably connected to the inner wall of the hollow tube 3, a sliding hub structure 7 slidably connected to the outer wall of the fixed hub structure 6, a large spring mounting seat 4 fixedly connected to the outer wall of the hollow tube 3, and a support arm mounting seat 5 slidably connected to the side of the hollow tube 3 away from the large spring mounting seat 4. The large spring mounting seat 4 on the hollow tube 3 is used to install shock-absorbing springs, providing a buffer and shock absorption function. The support arm mounting seat 5 can flexibly adjust its installation angle and slide on the hollow tube 3 during actual use. It can be adjusted according to usage conditions and fixed in position by bolts. Therefore, the support arm mounting seat 5 can be adjusted according to actual road conditions and load distribution, ensuring even force distribution on the vehicle.

[0022] The fixed hub structure 6 includes a rotating disk 61, with a connecting block 63 fixedly connected to the inner wall of the rotating disk 61. A fixed sleeve 64 is fixedly connected to the outer wall of the rotating disk 61 via a limiting rod 62. A limiting protrusion 66 is fixedly connected to the inner side wall of the fixed sleeve 64. A first adjustment hole 65 is provided in the wall of the fixed sleeve 64. The rotating disk 61 is rotatably connected to the hollow tube 3. The connecting block 63 on its inner wall is fixed to the drive shaft 2 to ensure power transmission. The fixed sleeve 64, which is fixed to the rotating disk 61 via the limiting rod 62, has a limiting protrusion 66 on its inner wall that cooperates with the sliding hub structure 7. The first adjustment hole 65 in the wall is used to insert a pin 75. The sliding sleeve 71 of the sliding hub structure 7 is slidably connected to the limiting protrusion 66 via a limiting groove 73 and can slide along the axial direction of the fixed sleeve 64.

[0023] The outer wall of the rotating disk 61 is rotatably connected to the outer wall of the hollow tube 3, the inner wall of the hollow tube 3 is rotatably connected to the outer wall of the connecting block 63, the inner wall of the connecting block 63 is fixedly connected to the outer wall of the drive shaft 2, the outer wall of the limiting rod 62 is fixedly connected to the outer wall of the rotating disk 61, and the outer wall of the large spring mounting seat 4 is fixedly connected to the outer wall of the support arm mounting seat 5.

[0024] The sliding hub structure 7 includes a sliding sleeve 71. A connecting rod 72 is fixedly connected to the outer wall of the sliding sleeve 71. A limiting groove 73 is opened in the wall of the sliding sleeve 71. A pin 75 is inserted into the outer wall of the sliding sleeve 71 through the second adjustment hole 74. A limiting block 76 is slidably connected to the outer wall of the pin 75. A fixing pin 77 is inserted into the inner wall of the pin 75. When it is necessary to adjust the rear axle length, the pin 75 is pulled out, and the sliding sleeve 71 can slide on the fixing sleeve 64. After adjusting to the coaxial position of the first adjustment hole 65 and the second adjustment hole 74, the pin 75 is passed through the first adjustment hole 65 and the second adjustment hole 74, and the other end is fitted into the limiting block 76. Then, the fixing pin 77 is inserted into the limiting block 76 to lock it, thereby realizing the adjustment of the rear axle length to adapt to different cargo requirements or vehicle models.

[0025] The side wall of the outer wall of the sliding sleeve 71 is slidably connected to the outer wall of the limiting protrusion 66 through the limiting groove 73. The second adjustment hole 74 is opened in the wall of the sliding sleeve 71. The outer wall of the pin 75 is inserted into the inner wall of the fixed sleeve 64 through the first adjustment hole 65. The outer wall of the limiting block 76 is in contact with the outer wall of the fixed sleeve 64.

[0026] When in use, the adjustable rear axle structure works, with the axle tube 1 serving as the basic support component, and the drive shaft 2 rotating within the axle tube 1 and the hollow tube 3 via an external coupling, thereby driving the wheel hub to move. The fixed wheel hub structure 6 and the sliding wheel hub structure 7 are the main components for realizing the rear axle adjustment function.

[0027] In the fixed hub structure 6, the rotating disk 61 is rotatably connected to the hollow tube 3, and the connecting block 63 on its inner wall is fixed to the drive shaft 2 to ensure power transmission. The rotating disk 61 is fixed to the fixed sleeve 64 by the limiting rod 62. The limiting protrusion 66 on the inner wall cooperates with the sliding hub structure 7. The first adjustment hole 65 in the wall is used to insert the pin 75. The sliding sleeve 71 of the sliding hub structure 7 is slidably connected to the limiting protrusion 66 through the limiting groove 73 and can slide along the fixed sleeve 64 axially. When it is necessary to adjust the rear axle length, the pin 75 is pulled out and the sliding sleeve 71 can slide on the fixed sleeve 64. After adjusting to the coaxial position of the first adjustment hole 65 and the second adjustment hole 74, the pin 75 is passed through the first adjustment hole 65 and the second adjustment hole 74, and the other end is put into the limiting block 76. Then, the fixing pin 77 is inserted into the limiting block 76 to lock it, thereby realizing the adjustment of the rear axle length to adapt to different cargo requirements or vehicle models.

[0028] In addition, the large spring mounting seat 4 on the hollow tube 3 is used to install the shock-absorbing spring and provide a buffering and shock-absorbing function; the support arm mounting seat 5 can be flexibly adjusted in terms of installation angle. In actual use, it can slide on the hollow tube 3 and be adjusted according to the usage conditions. The position is fixed by bolts. Therefore, the support arm mounting seat 5 can be adjusted according to the actual road conditions and load distribution, so that the vehicle is evenly stressed, optimizes the vehicle handling performance and driving safety, reduces the wear of parts caused by uneven stress, and extends the service life of the vehicle.

[0029] The rear axle structure achieves variable length through sliding adjustment, and in conjunction with the tow arm angle adjustment, it not only meets the usage needs of different scenarios and improves vehicle versatility, but also enables multiple uses of a single axle, reduces enterprise production costs, and improves vehicle handling and safety by optimizing force distribution.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] 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. An adjustable rear axle structure based on an electric vehicle, comprising an axle tube (1), the inner wall of the axle tube (1) is rotationally connected with a transmission shaft (2), the outer wall of the transmission shaft (2) is rotationally connected with a hollow tube (3), characterized in that: Also include: The outer wall of the fixed hub structure (6) is rotatably connected with the inner wall of the hollow tube (3), the outer wall of the fixed hub structure (6) is slidably connected with the sliding hub structure (7), the outer wall of the hollow tube (3) is fixedly connected with the large spring mounting seat (4), and the side of the hollow tube (3) away from the large spring mounting seat (4) is slidably connected with the supporting arm mounting seat (5); The fixed hub structure (6) comprises a rotating disc (61), the inner wall of the rotating disc (61) is fixedly connected with a connecting block (63), the outer wall of the rotating disc (61) is fixedly connected with a fixed sleeve (64) through a limiting rod (62), the inner side wall of the fixed sleeve (64) is fixedly connected with a limiting protrusion (66), and the wall of the fixed sleeve (64) is provided with a first adjusting hole (65).

2. The adjustable rear axle structure for electric vehicles according to claim 1, characterized in that: The outer wall of the rotating disc (61) is rotatably connected with the outer wall of the hollow tube (3), the inner wall of the hollow tube (3) is rotatably connected with the outer wall of the connecting block (63), and the inner wall of the connecting block (63) is fixedly connected with the outer wall of the transmission shaft (2).

3. The adjustable rear axle structure for electric vehicles of claim 1, wherein: The outer wall of the limiting rod (62) is fixedly connected with the outer wall of the rotating disc (61), and the outer wall of the large spring mounting seat (4) is fixedly connected with the outer wall of the supporting arm mounting seat (5).

4. The adjustable rear axle structure for electric vehicles according to claim 1, wherein: The sliding hub structure (7) comprises a sliding sleeve (71), the outer wall of the sliding sleeve (71) is fixedly connected with a connecting rod (72), the wall of the sliding sleeve (71) is provided with a limiting groove (73), the outer wall of the sliding sleeve (71) is inserted with a bolt (75) through a second adjusting hole (74), the outer wall of the bolt (75) is slidably connected with a limiting block (76), and the inner wall of the bolt (75) is inserted with a fixed pin (77).

5. The adjustable rear axle structure for electric vehicles according to claim 4, wherein: The side wall of the outer wall of the sliding sleeve (71) is slidably connected with the outer wall of the limiting protrusion (66) through the limiting groove (73), and the second adjusting hole (74) is formed in the wall of the sliding sleeve (71).

6. The adjustable rear axle structure for electric vehicles according to claim 4, wherein: The outer wall of the bolt (75) is inserted with the inner wall of the fixed sleeve (64) through the first adjusting hole (65), and the outer wall of the limiting block (76) is in contact with the outer wall of the fixed sleeve (64).

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