Two-stage gear reduction type motor transmission box body

Abstract

The utility model belongs to the technical field of automobile transmission, and particularly relates to a two-stage gear reduction type motor transmission box body which comprises a claw-shaped transmission box body. The upper end of the cover plate is fixedly connected with a cavel-shaped structural body; the front end of the motor input shaft penetrates through the cover plate, extends into the accommodating cavity and is connected with a driving gear; a first driven shaft; the first driven shaft and the second driven shaft are rotationally connected into the containing cavity; wherein the first driven shaft is fixedly connected with a first driven gear and a second driven gear, and the second driven shaft is fixedly connected with a third driven gear and a fourth driven gear. By means of the whole box body of the claw-shaped structure, on the premise that reliable and stable power transmission is guaranteed, the overall size is effectively reduced, the space occupation proportion is reduced, installation adaptation of a brake system and a suspension system cannot be hindered, and meanwhile parts are convenient to disassemble, assemble and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile transmission, in particular to a two-stage gear reduction type motor transmission box. Background Art

[0002] The transmission ratio of the primary reduction mechanism of the existing automobile motor reduction device is subject to certain limitations, and a secondary gear transmission is usually used to obtain a larger transmission ratio. However, the structure of the traditional secondary gear reduction box is more complicated than that of the primary gear, and it occupies more space, resulting in major challenges during installation and maintenance in space-constrained occasions. Therefore, in response to this problem, it is necessary to re-examine and optimize the design of the motor reduction device to make it more compact and easy to disassemble and assemble, so as to improve the overall use and maintenance efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a two-stage gear reduction motor transmission box to solve the above problems.

[0004] The technical solution of the utility model is implemented as follows: a two-stage gear reduction motor transmission box, comprising:

[0005] Claw-shaped transmission housing;

[0006] 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 fixedly connected to the upper end of the cover plate;

[0007] 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;

[0008] A first wheel hub bearing, the first wheel hub bearing is installed in the bearing position;

[0009] 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, and the hollow portion forms a connecting shaft hole;

[0010] The reduction gear output shaft comprises a main shaft portion and a gear portion which are integrally connected, and one end of the main shaft portion passes through the connecting shaft hole and is sleeved with the flange shaft head;

[0011] A motor housing, the front end of which is connected to the motor mating surface, the rear end of which is connected to an end cover, and a motor mating surface is provided on the side of the cover plate opposite to the motor housing;

[0012] The motor input shaft is located in the motor housing, and the front end of the motor input shaft passes through the cover plate and extends into the accommodating chamber and is connected to a driving gear;

[0013] A first driven shaft;

[0014] A second driven shaft, the first driven shaft and the second driven shaft are rotatably connected in the accommodating chamber;

[0015] Among them, the first driven shaft is connected and fixed with the first driven gear and the second driven gear, the second driven shaft is connected and fixed with the third driven gear and the fourth driven gear, the first driven gear is meshed with the driving gear, the second driven gear is meshed with the third driven gear, and the fourth driven gear is meshed with the gear part of the reduction gear output shaft.

[0016] Furthermore, the ram-horn type transmission housing also includes:

[0017] The ram-horn-shaped structure is connected and fixed to the upper end of the ram-horn-shaped transmission box.

[0018] Furthermore, a case mating surface is provided on the side of the cover plate facing away from the motor housing, and a transmission is provided in the accommodating chamber. The accommodating chamber is provided with a first bearing chamber located on the inner wall of the horn-shaped transmission case and a second bearing chamber located on the case mating surface of the cover plate, and second hub bearings adapted to the ends of the first driven shaft and the second driven shaft are respectively provided in the first bearing chamber and the second bearing chamber.

[0019] Furthermore, the front end of the first hub bearing abuts against the bearing seat, and the gear portion of the reduction gear output shaft abuts against the rear end of the first hub bearing on the side facing the front end of the ram's horn type transmission housing.

[0020] Furthermore, it also includes:

[0021] Brake disc, mounted on the flange shaft head;

[0022] Brake caliper, installed on the horn-shaped transmission housing, used to brake the brake disc;

[0023] Wherein, a mounting hole matching with the brake caliper is provided through the upper end of the ram-horn-shaped transmission box body.

[0024] Furthermore, an installation chamber is provided on the inner 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 input shaft of the motor.

[0025] Furthermore, a fourth bearing chamber is provided on the motor mating surface of the cover plate, and a fifth bearing chamber is also provided on the inner wall of the end cover. Both ends of the motor input shaft are respectively arranged through the fourth bearing chamber and the fifth bearing chamber, and 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 input shaft.

[0026] The beneficial effects of the utility model are:

[0027] Compared with the traditional two-stage reduction structure in the car, the overall ram-horn structure box can effectively reduce the overall volume and space occupancy ratio while ensuring reliable and stable power transmission. It will not hinder the installation and adaptation of the braking system and suspension system, and it is also easy to disassemble and replace parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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.

[0029] Figure 1 It is a schematic diagram of the overall structure of a specific implementation method of the utility model. DETAILED DESCRIPTION

[0030] 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.

[0031] Embodiment 1:

[0032] like Figure 1 As shown, the utility model discloses a two-stage gear reduction motor transmission box, comprising:

[0033] Claw-shaped transmission housing 1;

[0034] 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 fixedly connected to the upper end of the cover plate 2;

[0035] 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;

[0036] A first wheel hub bearing 4, the first wheel hub bearing 4 is installed in the bearing position 3;

[0037] A flange shaft head 5, wherein 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, and the shaft sleeve portion of the flange shaft head 5 is hollow, and the hollow portion forms a connecting shaft hole;

[0038] The reduction gear output shaft 6 comprises a main shaft portion and a gear portion which are integrally connected, and one end of the main shaft portion passes through the connecting shaft hole and is sleeved with the flange shaft head 5;

[0039] A motor housing 7, the front end of which is connected to the motor mating surface, the rear end of which is connected to an end cover, and a motor mating surface is provided on the side of the cover plate 2 opposite to the motor housing 7;

[0040] The motor input shaft 8 is located in the motor housing 7, and the front end of the motor input shaft 8 passes through the cover plate 2 and extends into the accommodating chamber and is connected to a driving gear;

[0041] A first driven shaft 9;

[0042] A second driven shaft 10, the first driven shaft 9 and the second driven shaft 10 are rotatably connected in the accommodating chamber;

[0043] Among them, the first driven shaft 9 is connected and fixed with a first driven gear 91 and a second driven gear 92, the second driven shaft 10 is connected and fixed with a third driven gear 101 and a fourth driven gear 102, the first driven gear 91 is meshed with the driving gear, the second driven gear 92 is meshed with the third driven gear 101, and the fourth driven gear 102 is meshed with the gear portion of the reduction gear output shaft 6.

[0044] In this solution, the overall layout of the first driven shaft, the second driven shaft and the reduction gear output shaft is a triangular structure, which has a large reduction ratio and can effectively improve the rotation;

[0045] By adopting the above technical solution, compared with the traditional two-stage reduction structure in the car, the overall ram-horn structure box can effectively reduce the overall volume and space occupation ratio while ensuring reliable and stable power transmission, and will not hinder the installation and adaptation of the brake system and suspension system. At the same time, it is also convenient for disassembly and replacement of parts.

[0046] In addition, the ram-horn type structure is integrally connected to the cover plate, and the connection is stable and reliable. 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 and can be applied to the rear wheels of the automobile.

[0047] Embodiment 2:

[0048] This embodiment provides a two-stage gear reduction motor transmission housing, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0049] Furthermore, a case mating surface is provided on the side of the cover plate 2 facing away from the motor housing 7, and a transmission is provided in the accommodating chamber. The accommodating chamber is provided with a first bearing chamber located on the inner wall of the horn-shaped transmission case 1 and a second bearing chamber located on the case mating surface of the cover plate 2. Second hub bearings adapted to the ends of the first driven shaft 9 and the second driven shaft 10 are respectively provided in the first bearing chamber and the second bearing chamber.

[0050] By adopting the above technical solution, the overall size can be reduced while ensuring smooth, stable and reliable power transmission.

[0051] Embodiment 3:

[0052] This embodiment provides a two-stage gear reduction motor transmission housing, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0053] Furthermore, the front end of the first hub bearing 4 abuts against the bearing position 3 , and the gear portion of the reduction gear output shaft 6 abuts against the rear end of the first hub bearing 4 on the side facing the front end of the ram-shaped transmission housing 1 .

[0054] 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.

[0055] Embodiment 4:

[0056] This embodiment provides a two-stage gear reduction motor transmission housing, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0057] Furthermore, it also includes:

[0058] The brake disc 14 is mounted on the flange shaft head 5;

[0059] A brake caliper 15 is mounted on the horn-shaped transmission housing 1 and is used to brake the brake disc 14;

[0060] The upper end of the ram-horn transmission housing 1 is provided with a mounting hole which is matched with the brake caliper 15 .

[0061] By adopting the above technical solution, the fixing component of the brake caliper can be directly inserted into the knife accommodating chamber for fixing, so that the wheel hub can achieve stable and reliable braking while improving space utilization.

[0062] Embodiment 5:

[0063] This embodiment provides a two-stage gear reduction motor transmission housing, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0064] Furthermore, an installation chamber is provided on the inner wall of the end cover, and a rotary transformer 12 is provided in the installation chamber. The rotor of the rotary transformer 12 rotates synchronously with the motor input shaft 8 .

[0065] By adopting the above technical solution, accurate speed feedback is provided for the power system of the vehicle.

[0066] Embodiment 6:

[0067] This embodiment provides a two-stage gear reduction motor transmission housing, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features.

[0068] Furthermore, a fourth bearing chamber is provided on the motor mating surface of the cover plate 2, and a fifth bearing chamber is also provided on the inner wall of the end cover. Both ends of the motor input shaft 8 are respectively arranged through the fourth bearing chamber and the fifth bearing chamber, and the second bearing chamber and the third bearing chamber are respectively provided with a second hub bearing 17 and a third hub bearing 18 adapted to the motor input shaft 8.

[0069] By adopting the above technical solution, the motor power output can be smooth and stable, ensuring the stability and reliability of the entire transmission system.

[0070] 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 two-stage gear reduction motor transmission housing, characterized in that: include: Claw-shaped transmission housing (1); A cover plate (2), wherein a receiving chamber is formed between the ram-horn-shaped transmission housing (1) and the cover plate (2), and a ram-horn-shaped structure is fixedly connected to the upper end of the cover plate (2); 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 hub bearing (4), and the shaft sleeve portion of the flange shaft head (5) is hollow, and the hollow portion forms a connecting shaft hole; The reduction gear output shaft (6) comprises a main shaft portion and a gear portion which are integrally connected, and one end of the main shaft portion passes through the connecting shaft hole and is sleeved with the flange shaft head (5); A motor housing (7), wherein the front end of the motor housing (7) is connected to the motor mating surface, the rear end is connected to an end cover, and the cover plate (2) is provided with a motor mating surface on a side opposite to the motor housing (7); A motor input shaft (8) is located in the motor housing (7), and a front end of the motor input shaft (8) passes through the cover plate (2) and extends into the accommodating chamber and is connected to a driving gear; A first driven shaft (9); A second driven shaft (10), the first driven shaft (9) and the second driven shaft (10) are rotatably connected in the accommodating chamber; The first driven shaft (9) is connected and fixed with a first driven gear (91) and a second driven gear (92), the second driven shaft (10) is connected and fixed with a third driven gear (101) and a fourth driven gear (102), the first driven gear (91) is meshed with the driving gear, the second driven gear (92) is meshed with the third driven gear (101), and the fourth driven gear (102) is meshed with the gear portion of the reduction gear output shaft (6).

2. A two-stage gear reduction motor transmission housing according to claim 1, characterized in that: A housing mating surface is provided on a side of the cover plate (2) facing away from the motor housing (7), and a transmission is provided in the accommodating chamber, wherein a first bearing chamber located on the inner wall of the horn-shaped transmission housing (1) and a second bearing chamber located on the housing mating surface of the cover plate (2) are provided in the accommodating chamber, and second hub bearings adapted to the ends of the first driven shaft (9) and the second driven shaft (10) are provided in the first bearing chamber and the second bearing chamber, respectively.

3. A two-stage gear reduction motor 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 gear portion of the reduction gear output shaft (6) facing the front end of the horn-shaped transmission housing (1) abuts against the rear end of the first wheel hub bearing (4).

4. The two-stage gear reduction motor transmission housing according to claim 1 is characterized in that: Also includes: A brake disc (14) is mounted on the flange shaft head (5); A brake caliper (15) is mounted on the horn-shaped transmission housing (1) and is used to brake the brake disc (14); The upper end of the ram-horn-shaped transmission housing (1) is provided with a mounting hole which is adapted to match the brake caliper (15).

5. The two-stage gear reduction motor transmission housing according to claim 1, characterized in that: An installation chamber is also provided on the inner wall of the end cover, and a rotary transformer (12) is provided in the installation chamber. The rotor of the rotary transformer (12) rotates synchronously with the motor input shaft (8).

6. A two-stage gear reduction motor transmission housing according to claim 1, characterized in that: A fourth bearing chamber is provided on the motor mating surface of the cover plate (2), and a fifth bearing chamber is also provided on the inner wall of the end cover. Both ends of the motor input shaft (8) are respectively arranged through the fourth bearing chamber and the fifth bearing chamber. A second hub bearing (17) and a third hub bearing (18) adapted to the motor input shaft (8) are respectively provided in the second bearing chamber and the third bearing chamber.

Images