An integrated dual-motor drive gear motor device

Abstract

An integrated dual-motor drive geared motor device is disclosed. This invention addresses the problem of inconsistent high-efficiency points in systems using permanent magnet motors as power sources, making it difficult to simultaneously achieve high power performance and high efficiency. In this invention, the motor shaft of the first motor is connected to the input end of the first clutch via a herringbone planetary gear train, and the output end of the first clutch is connected to a parallel gear train via an output shaft. The first clutch is mounted on the planetary carrier output flange. The motor shaft of the second motor is connected to the input end of the second clutch, and the output end of the second clutch is connected to the parallel gear train. The first motor, second motor, first clutch, second clutch, herringbone planetary gear train, planetary carrier output flange, output shaft, and parallel gear train are housed within a casing. This invention belongs to the field of gear transmission technology.

Description

Technical Field

[0001] This invention relates to a dual-motor driven gear motor device, belonging to the field of gear transmission technology. Background Technology

[0002] As a crucial technological means for marine development and utilization and for ensuring maritime security, unmanned surface vessels (USVs) are indispensable equipment for building a maritime power and a powerful weapon in maritime competition. Compared to other underwater devices, USVs possess advantages such as high autonomy, good stealth, strong adaptability, multi-mission capabilities, and long-term endurance, making them promising for broad applications in military and civilian fields. However, USVs still fall short in meeting the functional requirements of long endurance, high payload, and stealth, thus limiting their mission execution. To meet mission and functional requirements, improving USV endurance, reducing vibration and noise, and enhancing stealth capabilities are urgently needed.

[0003] Current unmanned surface vessel (USV) propulsion systems mostly employ low-speed, high-torque permanent magnet motors in direct drive configurations. This results in bulky motors, high manufacturing and maintenance costs, and severely limits the increase in payload capacity. Current USV propulsion systems utilize a dual-speed design, used for both attack / escape and low-power cruising operations. Due to the large rotor size of the permanent magnet motor, manufacturing and assembly errors make rotor inertia and imbalance control difficult, leading to interactive dynamic responses between components and persistently high vibration and noise levels. Since USVs cruise at 2% of the motor's power (100% operating rate) for over 99% of their operating time, only operating at peak power during attack / escape operations, even with a dual-speed design, the system's high-efficiency point differs under different operating conditions, making it difficult to simultaneously achieve high power performance and high efficiency.

[0004] To meet the special requirements of long endurance, low noise, and stealth, a high-power-density, low-noise, and high-efficiency unmanned surface vessel (USV) power transmission technology is proposed. This technology adopts dual-motor, dual-shaft drive, which can significantly improve the USV's endurance, payload capacity, and stealth. Summary of the Invention

[0005] To address the problem that systems using permanent magnet motors as power sources have different high-efficiency points and it is difficult to achieve both high power performance and high efficiency, this invention proposes an integrated dual-motor drive gear motor device.

[0006] The technical solution adopted by the present invention to solve the above problems is as follows: The present invention includes a housing, a first motor, a second motor, a first clutch, a second clutch, a herringbone planetary gear train, a planetary carrier output flange, an output shaft, and a parallel stage gear train;

[0007] The motor shaft of the first motor is connected to the input end of the first clutch via a herringbone planetary gear train, and the output end of the first clutch is connected to the parallel gear train via an output shaft. The first clutch is mounted on the output flange of the planetary carrier.

[0008] The motor shaft of the second motor is connected to the input end of the second clutch, and the output end of the second clutch is connected to the parallel gear system.

[0009] The first motor, the second motor, the first clutch, the second clutch, the herringbone planetary gear train, the planetary carrier output flange, the output shaft, and the parallel stage gear train are housed within the housing.

[0010] Furthermore, the herringbone planetary gear train includes a sun gear, a first planetary gear, a second planetary gear, a third planetary gear, a planet carrier, and a ring gear.

[0011] The sun gear is connected to the motor shaft of the first motor, the gear ring is mounted on the planet carrier, and the sun gear is located inside the gear ring.

[0012] The first planetary gear, the second planetary gear, and the third planetary gear are arranged circumferentially inside the gear ring, and all three planetary gears mesh with the sun gear and the gear ring.

[0013] Furthermore, the gear ring includes a first internal gear ring, a second internal gear ring, and an internal spacer ring;

[0014] The first and second internal gear rings are respectively located on both sides of the inner spacer, which is fixed to the planetary carrier.

[0015] Furthermore, the parallel gear system includes a first gear, a second gear, a third gear, a fourth gear, a first drive shaft of the parallel gear system, and a second drive shaft of the parallel gear system;

[0016] The second and third gears are coaxially fixedly mounted on the first transmission shaft of the parallel gear system. One end of the second transmission shaft of the parallel gear system is coaxially fixedly connected to the output end of the second clutch. The fourth gear is coaxially fixedly mounted on the second transmission shaft of the parallel gear system.

[0017] The first gear is connected to the output shaft, the first gear meshes with the second gear, the second gear is coaxially connected with the third gear, and the third gear meshes with the fourth gear.

[0018] Furthermore, the housing includes a first planetary reducer housing, a second planetary reducer housing, a third planetary reducer housing, and a large end cap;

[0019] The first planetary reducer housing, the second planetary reducer housing, the third planetary reducer housing, and the large end cover are connected sequentially from left to right.

[0020] One end of the planetary carrier is installed inside the first planetary reducer housing, and the other end of the planetary carrier is installed inside the second planetary reducer housing;

[0021] The planetary carrier output flange is installed inside the housing of the second planetary reducer;

[0022] One end of the output shaft is installed inside the housing of the third planetary reducer, and the other end of the output shaft is installed inside the large end cover.

[0023] The beneficial effects of this invention are:

[0024] 1. The dual-drive gear transmission system of this invention has motors with different power operating under different working conditions, thereby driving the load with different power; when one motor is working, the clutch connected to it is closed, and the clutch connected to the other motor is disengaged; thus improving the working efficiency of the system.

[0025] 2. This invention integrates two transmission systems with different operating conditions, enabling automatic underwater switching between operating conditions to adapt to different tasks;

[0026] 3. This invention integrates two transmission mechanisms under different working conditions into one housing, greatly reducing the size of the mechanism;

[0027] 4. The dual-drive transmission device of the present invention is ingeniously designed and has a compact structure. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the transmission principle of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the herringbone-tooth planetary gear train structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the first planetary gear structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the second planetary gear structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the third planetary gear structure of the present invention;

[0034] Figure 7 This is a schematic diagram of the parallel gear train structure of the present invention;

[0035] Figure 8 This is a schematic diagram of the first clutch structure of the present invention;

[0036] Figure 9This is a schematic diagram of the second clutch structure of the present invention;

[0037] Figure 10 This is a schematic diagram of the output shaft structure of the present invention;

[0038] Figure 11 This is a schematic diagram of the shell structure of the present invention;

[0039] Figure 12 This is a schematic diagram of the first transmission shaft structure of the parallel gear system of the present invention;

[0040] Figure 13 This is a schematic diagram of the second transmission shaft structure of the parallel gear system of the present invention;

[0041] Figure 14 This is a schematic diagram of the planetary reducer end cover structure of the present invention;

[0042] Figure 15 This is a schematic diagram of the retaining washer structure of the present invention;

[0043] Figure 16 This is a schematic diagram of the locking nut structure of the present invention. Detailed Implementation

[0044] Specific implementation method one: as follows Figure 1 As shown, an integrated dual-motor drive gear motor device includes a housing 1, a first motor 2, a second motor 3, a first clutch 4, a second clutch 5, a herringbone planetary gear train 6, a planetary carrier output flange 7, an output shaft 8, and a parallel stage gear train 9.

[0045] The motor shaft of the first motor 2 is connected to the input end 401 of the first clutch 4 via the herringbone planetary gear train 6. The output end 402 of the first clutch 4 is connected to the parallel stage gear train 9 via the output shaft 8. The first clutch 4 is mounted on the planetary carrier output flange 7.

[0046] The motor shaft of the second motor 3 is connected to the input end 501 of the second clutch 5, and the output end 502 of the second clutch 5 is connected to the parallel gear system 9.

[0047] The first motor 2, the second motor 3, the first clutch 4, the second clutch 5, the herringbone planetary gear train 6, the planetary carrier output flange 7, the output shaft 8, and the parallel stage gear train 9 are housed inside the outer casing 1.

[0048] The motor shaft of the second motor 3 is connected to the input end 501 of the second clutch 5 via a flat key. The motor shafts of the first motor 2 and the second motor 3 are located on two different axes, and both the motor shafts of the first motor 2 and the second motor 3 are located on the same side of the parallel gear system 9.

[0049] Specific implementation method two: such as Figures 1 to 3 As shown, based on the first specific embodiment, the herringbone planetary gear train 6 includes a sun gear 601, a first planetary gear 602, a second planetary gear 603, a third planetary gear 604, a planet carrier 605, and a gear ring.

[0050] The output shaft of the first motor 2 is connected to the sun gear 601 via a spline. The gear ring is mounted on the planet carrier 605, and the sun gear 601 is located inside the gear ring.

[0051] The first planetary gear 602, the second planetary gear 603, and the third planetary gear 604 are arranged in the gear ring along the circumferential direction, and the first planetary gear 602, the second planetary gear 603, and the third planetary gear 604 all mesh with the sun gear 601, and the first planetary gear 602, the second planetary gear 603, and the third planetary gear 604 all mesh with the gear ring.

[0052] The sun gear 601 drives the planet carrier 605 to rotate through the first planetary gear 602, the second planetary gear 603, and the third planetary gear 604. The planet carrier 605 is installed in the second planetary reducer housing 102, and one end of the planet carrier 605 is supported in the first planetary reducer housing 101 by the first bearing 6051.

[0053] Among them, such as Figure 4 As shown, the first planetary gear 602 includes a first planetary pin 6021, two first inner spacers 6022, a first planetary gear bearing 6023, and a first planetary gear 6024. The first planetary pin 6021 is fixed on the planet carrier 605. The first planetary pin 6021 is coaxially and fixedly inserted into the inner ring of the first planetary gear bearing 6023. The two first inner spacers 6022 are respectively fixedly fitted at both ends of the first planetary pin 6021, and the two first inner spacers 6022 are respectively located on both sides of the first planetary gear bearing 6023. The outer ring of the first planetary gear bearing 6023 is coaxially and fixedly embedded in the first planetary gear 6024.

[0054] Among them, such as Figure 5 As shown, the second planetary gear 603 includes a second planetary pin 6031, two second inner spacers 6032, a second planetary gear bearing 6033, and a second planetary gear 6034. The second planetary pin 6031 is fixed on the planet carrier 605. The second planetary pin 6031 is coaxially and fixedly inserted into the inner ring of the bearing of the second planetary gear bearing 6033. The two second inner spacers 6032 are respectively fixedly fitted at both ends of the second planetary pin 6031, and the two second inner spacers 6032 are respectively located on both sides of the second planetary gear bearing 6033. The outer ring of the bearing of the second planetary gear bearing 6033 is coaxially and fixedly embedded in the second planetary gear 6034.

[0055] Among them, such as Figure 6As shown, the third planetary gear 604 includes a third planetary pin 6041, two third inner spacers 6042, a third planetary gear bearing 6043, and a third planetary gear 6044. The third planetary pin 6041 is fixed on the planet carrier 605. The third planetary pin 6041 is coaxially and fixedly inserted into the inner ring of the bearing of the third planetary gear bearing 6043. The two third inner spacers 6042 are respectively fixedly fitted at both ends of the third planetary pin 6041, and the two third inner spacers 6042 are respectively located on both sides of the third planetary gear bearing 6043. The outer ring of the bearing of the third planetary gear bearing 6043 is coaxially and fixedly embedded in the third planetary gear 6044.

[0056] Specific implementation method three: such as Figure 3 As shown, based on the second specific embodiment, the gear ring includes a first internal gear ring 606, a second internal gear ring 607, and an inner spacer ring 609.

[0057] The first internal gear ring 606 and the second internal gear ring 607 are respectively disposed on both sides of the inner spacer ring 609, and the inner spacer ring 609 is fixed on the planet carrier 605.

[0058] Specific implementation method four: such as Figure 1 , Figure 2 and Figure 7 As shown, based on the first specific embodiment, the parallel gear system 9 includes a first gear 901, a second gear 902, a third gear 903, a fourth gear 904, a first transmission shaft 10 of the parallel gear system, and a second transmission shaft 11 of the parallel gear system.

[0059] The second gear 902 and the third gear 903 are coaxially fixedly mounted on the first transmission shaft 10 of the parallel gear system. One end of the second transmission shaft 11 of the parallel gear system is coaxially fixedly connected to the output end 502 of the second clutch 5. The fourth gear 904 is coaxially fixedly mounted on the second transmission shaft 11 of the parallel gear system.

[0060] The first gear 901 is connected to the output shaft 8, the first gear 901 meshes with the second gear 902, the second gear 902 is coaxially connected with the third gear 903, and the third gear 903 meshes with the fourth gear 904.

[0061] The first gear 901 is coaxially and fixedly connected to the output shaft 8 via spline 803. The second gear 902 and the third gear 903 are coaxially and fixedly connected to the first transmission shaft 10 of the parallel gear system via spline 1003. The fourth gear 904 is coaxially and fixedly connected to the second transmission shaft 11 of the parallel gear system via spline 1103.

[0062] Specific implementation method five: such as Figures 9 to 16As shown, based on specific embodiments one, two and four, the housing 1 includes a first planetary reducer housing 101, a second planetary reducer housing 102, a third planetary reducer housing 103, and a large end cover 104.

[0063] The first planetary reducer housing 101, the second planetary reducer housing 102, the third planetary reducer housing 103, and the large end cover 104 are connected sequentially from left to right.

[0064] One end of the planetary carrier 605 is installed inside the first planetary reducer housing 101, and the other end of the planetary carrier 605 is installed inside the second planetary reducer housing 102.

[0065] The planetary carrier output flange 7 is installed inside the second planetary reducer housing 102;

[0066] One end of the output shaft 8 is installed inside the housing 103 of the third planetary reducer, and the other end of the output shaft 8 is installed inside the large end cover 104.

[0067] The housing 1 also includes an M12 threaded hole 105, a lock nut 106, a planetary reducer end cover 107, a stop washer 108, and an M6 threaded hole 1071.

[0068] M12 threaded hole 105 is used to connect housing 1; M6 threaded hole 1071 is used to connect planetary reducer end cover 107 and housing 1; lock nut 106 and locking washer 108 are used to axially fix bearing.

[0069] Working principle

[0070] Under 100% operating conditions, the input end 501 and the output end 502 of the second clutch 5 are disconnected, and the input end 401 and the output end 402 of the first clutch 4 are closed. The second motor 3 stops rotating, and the first motor 2 is driven. The power flow starts from the first motor 2, passes through the herringbone planetary gear train 6, the planetary carrier output flange 7, the first clutch 4 and the output shaft 8, and finally drives the propeller 12 to rotate.

[0071] During cruise operation, the input end 401 and the output end 402 of the first clutch 4 are disconnected, and the input end 501 and the output end 502 of the second clutch 5 are closed. The first motor 2 stops rotating, and the second motor 3 drives it. The power flow starts from the second motor 3, passes through the second clutch 5, the first drive shaft 10 of the parallel gear system, the parallel gear system 9, the second drive shaft 11 of the parallel gear system, and the output shaft 8, and finally drives the propeller 12 to rotate.

[0072] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments without departing from the scope of the present invention, based on the technical essence of the present invention and within the spirit and principles of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. An integrated dual-motor drive gear motor device, characterized in that, Includes housing (1), main gear drive unit and auxiliary gear drive unit; Both the main gear drive unit and the auxiliary gear drive unit are located inside the housing (1). The main gear drive unit is connected to the propeller (12), and the auxiliary gear drive unit is connected to the main gear drive unit. The main gear drive unit includes a first motor (2), a herringbone planetary gear system (6), and an output shaft (8); The motor shaft of the first motor (2) is connected to the herringbone planetary gear train (6), and the herringbone planetary gear train (6) is connected to the propeller (12) through the output shaft (8); The auxiliary gear drive unit is connected to the output shaft (8); The auxiliary gear drive unit includes a second motor (3) and a parallel gear system (9). The motor shaft of the second motor (3) is connected to the parallel gear system (9), and the parallel gear system (9) is connected to the output shaft (8); The herringbone planetary gear train (6) includes a sun gear (601), a first planetary gear (602), a second planetary gear (603), a third planetary gear (604), a planet carrier (605), and a gear ring; The sun gear (601) is connected to the motor shaft of the first motor (2), and the gear ring is mounted on the planet carrier (605). The sun gear (601) is located inside the gear ring. The first planetary gear (602), the second planetary gear (603), and the third planetary gear (604) are arranged in the gear ring along the circumferential direction, and the first planetary gear (602), the second planetary gear (603), and the third planetary gear (604) all mesh with the sun gear (601), and the first planetary gear (602), the second planetary gear (603), and the third planetary gear (604) all mesh with the gear ring; The parallel gear system (9) includes a first gear (901), a second gear (902), a third gear (903), a fourth gear (904), a first drive shaft (10) of the parallel gear system, and a second drive shaft (11) of the parallel gear system. The second gear (902) and the third gear (903) are coaxially fixedly mounted on the first transmission shaft (10) of the parallel gear system. One end of the second transmission shaft (11) of the parallel gear system is coaxially fixedly connected to the output end (502) of the second clutch (5). The fourth gear (904) is coaxially fixedly mounted on the second transmission shaft (11) of the parallel gear system. The first gear (901) is connected to the output shaft (8), the first gear (901) meshes with the second gear (902), the second gear (902) is coaxially connected with the third gear (903), and the third gear (903) meshes with the fourth gear (904).

2. The integrated dual-motor drive gear motor device according to claim 1, characterized in that, The main gear drive unit also includes a first clutch (4) and a planetary carrier output flange (7). The motor shaft of the first motor (2) is connected to the input end (401) of the first clutch (4) through the herringbone planetary gear train (6). The output end (402) of the first clutch (4) is connected to the propeller (12) through the output shaft (8). The first clutch (4) is mounted on the planetary carrier output flange (7).

3. The integrated dual-motor drive gear motor device according to claim 1, characterized in that, The auxiliary gear drive unit also includes a second clutch (5); The motor shaft of the second motor (3) is connected to the input end (501) of the second clutch (5), and the output end (502) of the second clutch (5) is connected to the parallel gear system (9).

4. The integrated dual-motor drive gear motor device according to claim 1, characterized in that, The gear ring includes a first internal gear ring (606), a second internal gear ring (607), and an internal spacer (609). The first internal gear ring (606) and the second internal gear ring (607) are respectively disposed on both sides of the internal spacer (609), and the internal spacer (609) is fixed on the planet carrier (605).

5. An integrated dual-motor drive gear motor device according to claim 1 or 2, characterized in that, The housing (1) includes a first planetary reducer housing (101), a second planetary reducer housing (102) and a third planetary reducer housing (103). The first planetary reducer housing (101), the second planetary reducer housing (102), and the third planetary reducer housing (103) are connected sequentially from left to right. One end of the planetary carrier (605) is installed inside the first planetary reducer housing (101), and the other end of the planetary carrier (605) is installed inside the second planetary reducer housing (102); The planetary carrier output flange (7) is installed inside the second planetary reducer housing (102); One end of the output shaft (8) is installed inside the housing (103) of the third planetary reducer.

6. The integrated dual-motor drive gear motor device according to claim 5, characterized in that, The housing (1) also includes a large end cap (104); The large end cover (104) is sealed to the right end of the third planetary reducer housing (103), and the other end of the output shaft (8) is installed inside the large end cover (104).

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