Primary planetary speed reduction structure of cleat-shaped transmission box body

Abstract

The utility model belongs to the technical field of power transmission equipment, and particularly relates to a first-stage planetary speed reduction structure of a claw-shaped transmission box body, which comprises the claw-shaped transmission box body, a containing cavity is formed between the cavel-shaped transmission box body and the cover plate, and the upper end of the cover plate is connected with a cavel-shaped structural body; a bearing position; a first hub bearing; a flange shaft head; a reduction gear output shaft; a motor housing; the front end of the motor output shaft penetrates through the cover plate and extends into the accommodating cavity; a sun gear; the planet gears are distributed on the outer side of the sun gear in the circumferential direction; the gear ring is fixedly mounted on the inner wall of the claw-shaped transmission box body; a planet carrier; compared with the structure that a transmission motor and a transmission case are in gear transmission, the structure that the planet gear and the sun gear are matched with the claw-shaped transmission case body has the advantages of being stable and reliable in power transmission, compact in structure and small in size, improving the bearing capacity, effectively meeting the requirement for load supporting of rear wheels of an automobile, and improving the service life of the automobile. Efficient, stable and safe operation of automobile rear wheels can be kept.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle power transmission equipment, in particular to a primary planetary reduction structure of a ram's horn type transmission box. Background Art

[0002] With the continuous development of science and technology, electric vehicles and autonomous driving technology have become important development directions of the automotive industry. In this context, in-wheel motor technology came into being, which can not only improve the power performance of the car, but also effectively reduce energy consumption and environmental pollution.

[0003] In the prior art, the rear wheels of a vehicle usually bear more load and driving force output, especially in models with rear wheels as the driving wheels, and the transmission box of the hub motor mostly adopts the traditional gear transmission method for torque output, which requires more space to arrange gears and bearings, and its load-bearing capacity is relatively general. Therefore, the hub motor transmission system installed on the rear wheel needs to have better load-bearing capacity and reliability. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a first-stage planetary reduction structure of a ram's horn type transmission box to solve the above problems.

[0005] The technical solution of the utility model is implemented as follows: a primary planetary reduction structure of a ram-horn type transmission box, comprising:

[0006] Claw-shaped transmission housing;

[0007] A cover plate, a accommodating chamber is formed between the ram-horn-shaped transmission box body and the cover plate, and a ram-horn-shaped structure is connected to the upper end of the cover plate;

[0008] A bearing seat, the front end of the ram-horn-shaped transmission box is provided with a bearing seat which is communicated with the accommodating chamber and has a through hole;

[0009] A first wheel hub bearing, the first wheel hub bearing is installed in the bearing position;

[0010] A flange shaft head, a shaft sleeve portion of the flange shaft head passes through the through hole and is sleeved with the inner ring of the first hub bearing, the shaft sleeve portion of the flange shaft head is hollow, the hollow portion forms a connecting shaft hole, and the disc portion of the flange shaft head is used to be connected to the hub support;

[0011] The reduction gear output shaft, one end of which passes through the connecting shaft hole and is sleeved with the flange shaft head;

[0012] A motor mating surface is provided on the other side of the cover plate opposite to the horn-shaped transmission box body;

[0013] A motor housing, the front end of which is connected to the motor mating surface, and the rear end of which is connected to an end cover;

[0014] The motor output shaft has a front end that passes through the cover plate and extends into the accommodating chamber;

[0015] A sun gear is arranged at the front end of the motor output shaft;

[0016] A number of planetary gears are circumferentially distributed outside the sun gear;

[0017] The gear ring is fixedly mounted on the inner wall of the ram's horn type transmission box;

[0018] A planet carrier is located in the accommodating chamber, and a rotating shaft is rotatably connected to the planet carrier to provide radial support for the planetary gear;

[0019] One side of the planetary gear is meshed with the sun gear, and the other side is meshed with the ring gear. One side of the planetary carrier is connected and fixed to the output shaft of the reduction gear.

[0020] Furthermore, there are at least four planetary gears, which are distributed circumferentially.

[0021] Furthermore, the planet carrier and the reduction gear output shaft are integrally formed and coaxial.

[0022] Furthermore, the front end of the first hub bearing abuts against the bearing seat, and the side of the planet carrier facing the front end of the ram's horn type transmission box abuts against the rear end of the first hub bearing.

[0023] Further, a brake disc is mounted on the flange shaft head;

[0024] Brake caliper, installed on the horn-shaped transmission housing, used to brake the brake disc;

[0025] Wherein, a mounting hole matching with the brake caliper is provided through the radial outer side of the ram-horn type transmission box body.

[0026] Furthermore, an installation chamber is provided on the outer wall of the end cover, and a rotary transformer is provided in the installation chamber, and the rotor of the rotary transformer rotates synchronously with the output shaft of the motor.

[0027] Furthermore, a second bearing chamber is provided on the motor mating surface of the cover plate, and a third bearing chamber is provided on the inner wall of the end cover. Both ends of the motor output shaft are respectively arranged through the bearing chamber and the third bearing chamber. The second bearing chamber and the third bearing chamber are respectively provided with a second hub bearing and a third hub bearing adapted to the motor output shaft.

[0028] The beneficial effects of the utility model are:

[0029] Compared with the gear transmission structure of the transmission motor and transmission box, the structural layout of the planetary gear and sun gear combined with the ram's horn type transmission box has stable and reliable power transmission, compact structure, small size, improved carrying capacity, and effectively meets the load support of the rear wheels of the car, and can maintain efficient, stable and safe operation of the rear wheels of the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0031] Figure 1 This is a schematic diagram of the structure of the horn-shaped transmission box of the utility model. Figure 1 ;

[0032] Figure 2 This is a schematic diagram of the structure of the horn-shaped transmission box of the utility model. Figure 2 ; DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Example 1

[0035] like Figure 1 As shown in the figure, the utility model discloses a primary planetary reduction structure of a ram-horn type transmission box, comprising:

[0036] Claw-shaped transmission housing 1;

[0037] A accommodating chamber is formed between the cover plate 2 and the ram-horn-shaped transmission box body 1, and a ram-horn-shaped structure is connected to the upper end of the cover plate 2;

[0038] Bearing position 3: The front end of the horn-shaped transmission housing 1 is provided with a bearing position 3 which is communicated with the accommodating chamber and has a through hole;

[0039] A first wheel hub bearing 4, the first wheel hub bearing 4 is installed in the bearing position 3;

[0040] The flange shaft head 5, the shaft sleeve portion of the flange shaft head 5 passes through the through hole and is sleeved with the inner ring of the first hub bearing 4, the shaft sleeve portion of the flange shaft head 5 is hollow, the hollow portion forms a connecting shaft hole, and the disc portion of the flange shaft head 5 is used to be connected with the hub support;

[0041] The reduction gear output shaft 6, one end of which passes through the connecting shaft hole and is sleeved with the flange shaft head 5;

[0042] The other side of the cover plate 2 opposite to the horn-shaped transmission housing 1 is provided with a motor mating surface;

[0043] A motor housing 8, the front end of which is connected to the motor mating surface, and the rear end of which is connected to an end cover 81;

[0044] The front end of the motor output shaft 9 passes through the cover plate 2 and extends into the accommodating chamber;

[0045] The sun gear 10 is arranged at the front end of the motor output shaft 9;

[0046] A plurality of planetary gears 11 are circumferentially distributed outside the sun gear 10;

[0047] The gear ring 12 is fixedly mounted on the inner wall of the horn-shaped transmission housing 1;

[0048] A planet carrier 13 is located in the accommodating chamber, and a rotating shaft 14 is rotatably connected to the planet carrier 13 to provide radial support for the planetary gear 11;

[0049] One side of the planetary gear 11 is meshed with the sun gear 10 , and the other side is meshed with the ring gear 12 . One side of the planetary carrier 13 is connected and fixed to the reduction gear output shaft 6 .

[0050] In this solution, the reduction gear output shaft is connected and fixed to the flange shaft head through a spline structure, and can also be fixed by bolts or welding.

[0051] In the present solution, the ram-horn type structure is integrally formed with the cover plate, and can also be fixed by bolt connection or welding connection. The ram-horn type structure is a ram-horn structure, which can withstand external forces more effectively, thereby improving the stability and durability of the structure. The ram-horn type structure is used as a connecting structure for connecting the drive device to the automobile frame. Specifically, the ram-horn type structure is connected and fixed to the chassis part of the automobile outer frame. The connection between the ram-horn type structure and the cover plate can be applied to the rear wheels of the automobile to meet the rear wheel support of the automobile.

[0052] By adopting the above technical scheme, compared with the gear transmission structure of the transmission motor transmission box, the structural layout of the planetary gear and the sun gear in conjunction with the ram's horn type transmission box has stable and reliable power transmission, compact structure, small size, improved carrying capacity, and effectively meets the load support of the rear wheels of the car, which can maintain efficient, stable and safe operation of the rear wheels of the car.

[0053] Example 2

[0054] This embodiment provides a first-stage planetary reduction structure of a ram-horn type transmission box, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0055] Furthermore, at least four planetary gears 11 are provided and distributed circumferentially.

[0056] By adopting the above technical solution, the load can be shared and the durability and life of the entire transmission system can be improved.

[0057] Example 3

[0058] This embodiment provides a first-stage planetary reduction structure of a ram-horn type transmission box, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0059] Furthermore, the planet carrier 13 and the reduction gear output shaft are integrally formed and coaxial.

[0060] By adopting the above technical solution, higher structural integrity and strength are provided, and it is capable of withstanding greater loads and impacts.

[0061] Example 4

[0062] This embodiment provides a first-stage planetary reduction structure of a ram-horn type transmission box, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0063] Furthermore, the front end of the first hub bearing 4 abuts against the bearing position 3 , and the side of the planet carrier 13 facing the front end of the ram-horn type transmission housing 1 abuts against the rear end of the first hub bearing 4 .

[0064] By adopting the above technical solution, the first hub bearing can be axially abutted and pressed against the bearing position, which effectively improves the firmness of the first hub bearing and further improves the stability of the power output of the ram's horn type transmission box.

[0065] Example 5

[0066] This embodiment provides a first-stage planetary reduction structure of a ram-horn type transmission box, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0067] Further, the brake disc 15 is mounted on the flange shaft head 5;

[0068] A brake caliper 16 is mounted on the clevis-shaped transmission housing 1 and is used to brake the brake disc 15;

[0069] A mounting hole matching with the brake caliper 16 is provided through the radial outer side of the ram-horn type transmission housing 1 .

[0070] By adopting the above technical solution, the wheel hub electric drive device can achieve stable and reliable braking while improving space utilization.

[0071] Example 6

[0072] This embodiment provides a first-stage planetary reduction structure of a ram-horn type transmission box, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0073] Furthermore, an installation chamber is provided on the outer wall of the end cover 81 , and a rotary transformer 17 is provided in the installation chamber. The rotor of the rotary transformer 17 rotates synchronously with the motor output shaft 9 .

[0074] By adopting the above technical solution, accurate speed feedback is provided for the power system of the vehicle.

[0075] Example 7

[0076] This embodiment provides a first-stage planetary reduction structure of a ram-horn type transmission box, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0077] Furthermore, a second bearing chamber is provided on the motor mating surface of the cover plate 2, and a third bearing chamber is provided on the inner wall of the end cover 81. Both ends of the motor output shaft 9 are respectively arranged through the bearing chamber and the third bearing chamber. The second bearing chamber and the third bearing chamber are respectively provided with a second hub bearing 18 and a third hub bearing 19 adapted to the motor output shaft 9.

[0078] By adopting the above technical solution, the power output of the transmission box is smooth, stable and reliable.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A primary planetary reduction structure of a ram-horn type transmission housing, characterized in that: include: Claw-shaped transmission housing (1); A cover plate (2), a accommodating chamber is formed between the ram-horn-shaped transmission housing (1) and the cover plate (2), and the upper end of the cover plate (2) is connected to a ram-horn-shaped structure; A bearing seat (3), wherein the front end of the ram-horn-shaped transmission housing (1) is provided with a bearing seat (3) which is in communication with the accommodating chamber and has a through hole; A first wheel hub bearing (4), the first wheel hub bearing (4) being mounted in the bearing position (3); A flange shaft head (5), wherein a shaft sleeve portion of the flange shaft head (5) passes through the through hole and is sleeved with the inner ring of the first wheel hub bearing (4), the shaft sleeve portion of the flange shaft head (5) is hollow, the hollow portion forms a connecting shaft hole, and the disc portion of the flange shaft head (5) is used to be connected to the wheel hub support; A reduction gear output shaft (6), one end of which passes through the connecting shaft hole and is sleeved with the flange shaft head (5); A motor mating surface is provided on the other side of the cover plate (2) opposite to the horn-shaped transmission housing (1); A motor housing (8), the front end of the motor housing (8) being connected to the motor mating surface, and the rear end of the motor housing (8) being connected to an end cover (81); The motor output shaft (9) has a front end that passes through the cover plate (2) and extends into the accommodating chamber; A sun gear (10) is arranged at the front end of the motor output shaft (9); A plurality of planetary gears (11) are distributed outside the sun gear (10); A gear ring (12) is fixedly mounted on the inner wall of the ram-horn type transmission housing (1); A planet carrier (13) is located in the accommodating chamber, and a rotating shaft (14) is rotatably connected to the planet carrier (13) to provide radial support for the planetary gear (11); One side of the planetary gear (11) is meshed with the sun gear (10), and the other side is meshed with the ring gear (12); one side of the planetary carrier (13) is connected and fixed to the reduction gear output shaft (6).

2. A primary planetary reduction structure of a ram-horn type transmission housing according to claim 1, characterized in that: At least four planetary gears (11) are provided and are distributed in a circumferential direction.

3. The primary planetary reduction structure of a ram-horn type transmission housing according to claim 1, characterized in that: The planet carrier (13) and the reduction gear output shaft (6) are integrally formed and coaxial.

4. The primary planetary reduction structure of a ram-horn type transmission housing according to claim 1, characterized in that: The front end of the first wheel hub bearing (4) abuts against the bearing position (3), and the side of the planet carrier (13) facing the front end of the horn-shaped transmission housing (1) abuts against the rear end of the first wheel hub bearing (4).

5. The primary planetary reduction structure of a ram-horn type transmission housing according to claim 1, characterized in that: Also includes: A brake disc (15) is mounted on the flange shaft head (5); A brake caliper (16) is mounted on the horn-shaped transmission housing (1) and is used to brake the brake disc (15); A mounting hole matching the brake caliper (16) is provided through the radial outer side of the ram-horn-shaped transmission housing (1).

6. The primary planetary reduction structure of a ram-horn type transmission housing according to claim 1, characterized in that: An installation chamber is also provided on the outer wall of the end cover (81), and a rotary transformer (17) is provided in the installation chamber. The rotor of the rotary transformer (17) rotates synchronously with the motor output shaft (9).

7. The primary planetary reduction structure of a ram-horn type transmission housing according to claim 1, characterized in that: A second bearing chamber is provided on the motor mating surface of the cover plate (2), a third bearing chamber is provided on the inner wall of the end cover (81), two ends of the motor output shaft (9) are respectively arranged through the bearing chamber and the third bearing chamber, and a second hub bearing (18) and a third hub bearing (19) adapted to the motor output shaft (9) are respectively provided in the second bearing chamber and the third bearing chamber.

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