A gear motor device based on planetary gear train

Abstract

This invention relates to a geared motor device based on a planetary gear train. It addresses the problem that many unmanned surface vessel (USV) propulsion systems employ low-speed, high-torque permanent magnet motors in direct drive configurations, resulting in bulky motors, high manufacturing and maintenance costs, and severely limiting payload capacity. The invention comprises a housing, a motor, a clutch, a planetary gear train, and an output shaft. The motor, clutch, planetary gear train, planetary carrier output flange, and output shaft are sequentially arranged within the housing. The motor shaft is connected to the input end of the clutch via the planetary gear train, and the output end of the clutch is connected to the propeller via the output shaft. This invention belongs to the field of gear transmission technology.

Description

Technical Field

[0001] This invention relates to a 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 capability, and long-term endurance, making them widely applicable in military and civilian fields. However, USVs still fall short in meeting the functional requirements of long endurance, high payload, and stealth, which limits their mission execution. To meet mission and functional requirements, improving USV endurance, reducing vibration and noise, and enhancing stealth are urgently needed.

[0003] Current unmanned surface vessel (USV) propulsion systems mostly adopt low-speed, high-torque permanent magnet motor direct drive solutions, resulting in large motor size, high manufacturing and maintenance costs, and severely limiting the increase in payload capacity. Furthermore, due to the large size of the permanent magnet motor rotor, manufacturing and assembly errors make it difficult to control rotor inertia and rotor imbalance. The dynamic response of each component interacts with each other, resulting in persistently high vibration and noise levels. Summary of the Invention

[0004] To address the problem that unmanned vessel propulsion systems often employ low-speed, high-torque permanent magnet motors with direct drive, resulting in bulky motors, high manufacturing and maintenance costs, and severely limiting the increase in payload, this invention proposes a gear motor device based on a planetary gear system.

[0005] The technical solution adopted by the present invention to solve the above problems is as follows: the present invention includes a housing, a motor, a clutch, a planetary gear train, and an output shaft;

[0006] The motor, clutch, planetary gear train, planetary carrier output flange, and output shaft are sequentially arranged inside the housing;

[0007] The motor shaft of the motor is connected to the input end of the clutch via a planetary gear train, and the output end of the clutch is connected to the propeller via an output shaft.

[0008] Furthermore, it also includes planetary carrier output flanges;

[0009] The clutch is mounted on the planetary carrier output flange.

[0010] Furthermore, the 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 first planetary gear, the second planetary gear, and the third planetary gear are all herringbone gears.

[0016] Furthermore, the first planetary gear includes a first planetary pin, two first inner spacers, a first planetary gear bearing, and a first planetary gear;

[0017] The first planetary pin is fixed on the planet carrier and coaxially fixedly inserted into the inner ring of the first planetary gear bearing. Two first inner spacers are respectively fixedly fitted at both ends of the first planetary pin and are located on both sides of the first planetary gear bearing. The outer ring of the first planetary gear bearing is coaxially fixedly embedded in the first planetary gear.

[0018] Furthermore, the second planetary gear includes a second planetary pin, two second inner spacers, a second planetary gear bearing, and a second planetary gear;

[0019] The second planetary pin is fixed on the planet carrier and coaxially fixedly inserted into the inner ring of the second planetary gear bearing. Two second inner spacers are respectively fixedly fitted at both ends of the second planetary pin and are located on both sides of the second planetary gear bearing. The outer ring of the second planetary gear bearing is coaxially fixedly embedded in the second planetary gear.

[0020] Furthermore, the third planetary gear includes a third planetary pin, two third inner spacers, a third planetary gear bearing, and a third planetary gear;

[0021] The third planetary pin is fixed on the planet carrier and coaxially fixedly inserted into the inner ring of the third planetary gear bearing. The two third inner spacers are respectively fixedly fitted on both ends of the third planetary pin, and the two third inner spacers are respectively located on both sides of the third planetary gear bearing. The outer ring of the third planetary gear bearing is coaxially fixedly embedded in the third planetary gear.

[0022] Furthermore, the housing includes a first planetary reducer housing, a second planetary reducer housing, and a third planetary reducer housing;

[0023] The first planetary reducer housing, the second planetary reducer housing, and the third planetary reducer housing are connected sequentially from left to right.

[0024] 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;

[0025] The planetary carrier output flange is installed inside the housing of the second planetary reducer;

[0026] One end of the output shaft is installed inside the housing of the third planetary reducer.

[0027] Furthermore, the housing also includes large end caps;

[0028] The large end cover is sealed to the right end of the third planetary reducer housing, and the other end of the output shaft is installed inside the large end cover.

[0029] The beneficial effects of this invention are:

[0030] 1. This invention transmits the motor power to the propeller through a planetary gear system, which solves the problem that the direct drive scheme using a low-speed, high-torque permanent magnet motor results in a large motor size, high manufacturing and maintenance costs, and seriously limits the increase of effective payload.

[0031] 2. This invention uses a planetary gear system as the power transmission structure. The planetary gear system can not only minimize the power loss during the transmission process, but also has high transmission efficiency, long service life, and is not easily damaged or prone to mechanical failure, while also having a good noise reduction effect. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the transmission principle of the present invention;

[0033] Figure 2 This is a schematic diagram of a planetary gear train;

[0034] Figure 3 This is a schematic diagram of the structure of the first planetary gear;

[0035] Figure 4 This is a schematic diagram of the second planetary gear;

[0036] Figure 5 This is a schematic diagram of the third planetary gear;

[0037] Figure 6 This is a schematic diagram of the outer shell structure;

[0038] Figure 7 This is a schematic diagram of the clutch structure. Detailed Implementation

[0039] Specific implementation method one: as follows Figure 1 As shown, a geared motor device based on a planetary gear train includes a housing 1, a motor 2, a clutch 4, a planetary gear train 6, and an output shaft 8;

[0040] The motor 2, clutch 4, planetary gear train 6, planetary carrier output flange 7 and output shaft 8 are arranged in the housing 1 from left to right;

[0041] The motor shaft of motor 2 is connected to the input end 401 of clutch 4 via planetary gear train 6, and the output end 402 of clutch 4 is connected to propeller 12 via output shaft 8.

[0042] Specific implementation method two: such as Figure 1 As shown, based on the first specific implementation method, it also includes a planetary carrier output flange 7;

[0043] Clutch 4 is fixed to the planetary carrier output flange 7.

[0044] Specific implementation method three: such as Figure 2 As shown, based on the first specific embodiment, the 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.

[0045] 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, with the sun gear 601 located inside the gear ring.

[0046] 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.

[0047] 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.

[0048] Specific implementation method four: such as Figure 2 As shown, based on the third specific embodiment, the gear ring includes a first internal gear ring 606, a second internal gear ring 607, and an inner spacer ring 609.

[0049] 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.

[0050] Specific implementation method five: such as Figure 2 As shown, based on the third specific embodiment, the first planetary gear 602, the second planetary gear 603, and the third planetary gear 604 are all herringbone gears.

[0051] Specific implementation method six: such as Figure 2 and Figure 3 As shown, based on the third specific embodiment, 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;

[0052] 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.

[0053] Specific implementation method seven: such as Figure 2 and Figure 4 As shown, based on the third specific embodiment, 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.

[0054] 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 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 second planetary gear bearing 6033 is coaxially and fixedly embedded in the second planetary gear 6034.

[0055] Specific implementation method eight: such as Figure 2 and Figure 5 As shown, based on the third specific embodiment, 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.

[0056] 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 third planetary gear bearing 6043. The two third inner spacers 6042 are respectively fixedly fitted on 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 third planetary gear bearing 6043 is coaxially and fixedly embedded in the third planetary gear 6044.

[0057] Specific implementation method nine: as follows Figure 6 As shown, based on specific embodiments one and three, housing 1 includes a first planetary reducer housing 101, a second planetary reducer housing 102 and a third planetary reducer housing 103.

[0058] 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.

[0059] 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.

[0060] The planetary carrier output flange 7 is installed inside the second planetary reducer housing 102;

[0061] One end of the output shaft 8 is installed inside the housing 103 of the third planetary reducer.

[0062] Specific implementation method ten: such as Figure 6 As shown, based on specific embodiment nine, the housing 1 also includes a large end cap 104;

[0063] 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.

[0064] 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. A geared motor device based on a planetary gear train, characterized in that, It includes a housing (1), a motor (2), a clutch (4), a planetary gear system (6), and an output shaft (8); The motor (2), planetary gear train (6), planetary carrier output flange (7), clutch (4) and output shaft (8) are sequentially arranged inside the housing (1); The motor shaft of the motor (2) is connected to the input end (401) of the clutch (4) through the planetary gear train (6), and the output end (402) of the clutch (4) is connected to the propeller (12) through the output shaft (8); The 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 ring gear; 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 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 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 fixedly embedded in the first planetary gear (6024). 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 fixedly inserted into the inner ring 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 second planetary gear bearing (6033) is coaxially fixedly embedded in the second planetary gear (6034). 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 fixedly inserted into the inner ring of the third planetary gear bearing (6043). The two third inner spacers (6042) are respectively fixedly fitted on 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 third planetary gear bearing (6043) is coaxially fixedly embedded in the third planetary gear (6044).

2. The gear motor device based on a planetary gear train according to claim 1, characterized in that, The clutch (4) is mounted on the planetary carrier output flange (7).

3. The gear motor device based on a planetary gear train 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).

4. A gear motor device based on a planetary gear train according to claim 1, characterized in that, The first planetary gear (602), the second planetary gear (603), and the third planetary gear (604) are all herringbone gears.

5. A gear motor device based on a planetary gear train according to claim 1, 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. A gear motor device based on a planetary gear train 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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