An amphibious wheel assembly structure and its usage method

Abstract

This invention discloses an amphibious wheel assembly structure and its usage method, including an outer sealed housing, a command execution end, and a dynamic transmission component. The outer sealed housing houses an outer contour output component, a planetary gear reducer assembly, and a magnetic coupling assembly. After fixing the propulsion sun gear, the main drive internal gear ring output motor directly drives the assembled planetary carrier, causing it to rotate in the same direction as the main drive internal gear ring. Radial ball bearings drive the outer gear ring, increasing its output torque and meeting the traction requirements on land. When fixing the outer gear ring, the propulsion sun gear is driven by a motor from the transmission gear output end, causing it to move in the same direction as the propulsion sun gear. This allows the propulsion sun gear to directly drive a small-diameter output shaft to power the surface propulsion propeller, meeting the underwater propulsion speed requirements. This achieves seamless drive of the single wheel assembly structure, ensuring flexibility during amphibious use.

Description

Technical Field

[0001] This invention belongs to the field of vehicle technology, specifically relating to an amphibious wheel assembly structure and its usage method. Background Technology

[0002] Existing amphibious propulsion wheel sets typically consist of independent wheel structures for power drive. While enabling travel and maneuverability on both water and land, they occupy considerable space in the equipment cabin. Furthermore, the demand for propulsion on water differs from that on land, and this independent wheel design is complex, making it difficult to simultaneously achieve high-speed propulsion on water and high torque output on land while minimizing space requirements. Additionally, the reduction ratio is not ideal, resulting in poor performance in complex waterways or terrains, and failing to meet the requirements for seamless transitions between water and land and the flexibility needed for amphibious use. Therefore, we propose an amphibious wheel set structure and its usage method. Summary of the Invention

[0003] This invention provides an amphibious wheel assembly structure and its usage method to solve the problems mentioned in the background art.

[0004] This invention provides the following technical solution: an amphibious wheel assembly structure, comprising an outer sealed housing, a command execution end, and a dynamic transmission component. An outer contour output component, a planetary gear reducer assembly, and a magnetic coupling assembly are installed inside the outer sealed housing. The outer contour output component serves as a drive end to synchronously drive the dynamic transmission component for amphibious movement. The planetary gear reducer assembly is used to rotate the input shaft, thereby adjusting the output speed and torque. The magnetic coupling assembly is installed between the dynamic transmission component and the planetary gear reducer assembly.

[0005] The outer contour output assembly includes a main drive internal gear ring, an assembly planetary carrier, and a driven gear. The driven gear is located on the outside of the assembly planetary carrier and meshes with the main drive internal gear ring. The main drive internal gear ring is fixedly connected to the assembly planetary carrier via an output shaft and is used to drive the assembly planetary carrier to rotate. The driven gear drives the planetary gear reducer assembly via a brushless motor.

[0006] The planetary gear reducer assembly includes an external gear ring, radial ball bearings, planetary gears, and a propulsion sun gear. The output shaft end of the propulsion sun gear is connected to the dynamic transmission assembly via a magnetic coupling assembly. The radial ball bearings are rotatably connected to the planet carrier via the planetary gears. The external gear ring is located outside the radial ball bearings. The radial ball bearings are triangularly distributed and mesh with the propulsion sun gear.

[0007] A further improvement of the present invention is that the magnetic coupling assembly includes a non-contact coupling and a section isolation cover, the section isolation cover being fixedly connected to the outer sealing housing, and the section isolation cover being disposed outside the non-contact coupling for separating the magnets in the non-contact coupling.

[0008] A further improvement of the present invention is that the dynamic transmission component includes a ground-moving wheel, a small-diameter output shaft, and a water-surface transmission propeller. The water-surface transmission propeller is disposed inside the ground-moving wheel, the small-diameter output shaft is fixedly connected to the water-surface transmission propeller, the non-contact coupling is connected to the output shaft of the propulsion sun gear, and the ground-moving wheel is connected to the output end of the non-contact coupling.

[0009] A further improvement of the present invention is a method of using an amphibious wheel assembly structure, comprising the following steps:

[0010] Step S1: When in ground driving posture, the sun gear is fixed and the planetary carrier is directly driven by the motor at the output end of the main drive internal gear ring, so that the planetary carrier and the main drive internal gear ring rotate in the same direction. The outer gear ring is driven to rotate through the radial ball bearing, which amplifies the power input torque and increases the output torque of the outer gear ring. The outer gear ring drives the ground moving wheel through the non-contact coupling to meet the traction requirements on land.

[0011] In step S2, when in the water propulsion posture, by fixing the external gear ring, the planetary carrier is driven by the motor from the output end of the transmission gear, so that the planetary carrier moves in the same direction as the propulsion sun gear, and the propulsion sun gear directly drives the small-diameter output shaft to drive the water surface propulsion propeller. By controlling the driving speed of the motor on the water surface propeller, the speed of the propeller is adjusted to meet the water propulsion speed requirements.

[0012] Step S3: When the ground or water travel posture needs to be reversed, the power input of the motor end drive mode in step S1 or step S2 is reversed through the command execution terminal, so that reverse transmission can realize reverse gear transportation.

[0013] Compared with existing technologies, this invention can change its form by switching the fixed end of the drive wheel. After fixing the propulsion sun gear, the assembly planetary carrier is directly driven by the motor at the output end of the main drive internal gear ring, so that the assembly planetary carrier and the main drive internal gear ring rotate in the same direction. The outer gear ring is driven to rotate through the radial ball bearing, which improves the output torque of the outer gear ring and meets the traction requirements on land. When the outer gear ring is fixed, the assembly planetary carrier is driven by the motor at the output end of the transmission gear, so that the assembly planetary carrier and the propulsion sun gear move in the same direction. This allows the propulsion sun gear to directly drive the small-diameter output shaft to drive the water propulsion propeller, which meets the propulsion speed requirements in water. This achieves seamless drive of the single wheel set structure and ensures the flexibility requirements for amphibious use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an amphibious wheel assembly according to the present invention. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the structure of an amphibious wheel assembly according to the present invention. Figure 2 ;

[0016] Figure 3 This is a partial schematic diagram of an amphibious wheel assembly structure according to the present invention.

[0017] In the diagram: 1. Outer sealing housing; 2. Outer contour output assembly; 21. Main drive internal gear ring; 22. Assembled planetary carrier; 23. Driven gear; 3. Planetary gear reducer assembly; 31. External gear ring; 32. Radial ball bearing; 33. Planetary gears; 34. Propulsion sun gear; 4. Magnetic coupling assembly; 41. Non-contact coupling; 42. Interval isolation cover; 5. Command execution end; 6. Dynamic transmission assembly; 61. Ground moving wheel; 62. Small diameter output shaft; 63. Water surface propeller. Detailed Implementation

[0018] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. In order to better illustrate the specific embodiments of the present invention, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size. It is understandable for those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted. All other specific embodiments obtained by those skilled in the art based on the specific embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] Example

[0020] Please see Figures 1-3 An amphibious wheel assembly structure includes an outer sealed housing 1, a command execution end 5, and a dynamic transmission component 6. An outer contour output component 2, a planetary gear reducer assembly 3, and a magnetic coupling assembly 4 are installed inside the outer sealed housing 1. The outer contour output component 2 is used as a drive end to synchronously drive the dynamic transmission component 6 for amphibious movement. The planetary gear reducer assembly 3 is used to rotate the input shaft to adjust the output speed and torque. The magnetic coupling assembly 4 is installed between the dynamic transmission component 6 and the planetary gear reducer assembly 3.

[0021] In this embodiment, the amphibious wheel set of the present invention can separate the movement of the ground-based moving wheel 61 and the inner propeller 62, and output rotation independently. Thus, through the single wheel set structure, it can achieve high-speed propulsion and high torque output on water and land, ensuring the effectiveness of the operation.

[0022] The outer contour output assembly 2 includes a main drive internal gear ring 21, an assembly planetary carrier 22, and a driven gear 23. The driven gear 23 is located on the outside of the assembly planetary carrier 22 and meshes with the main drive internal gear ring 21. The main drive internal gear ring 21 is fixedly connected to the assembly planetary carrier 22 through the output shaft and is used to drive the assembly planetary carrier 22 to rotate. The driven gear 23 drives the planetary gear reducer assembly 3 through a brushless motor.

[0023] In this embodiment, the propulsion sun gear 34 is connected to the water surface propulsion propeller 63 via a small-diameter output shaft 62, while the main drive internal gear ring 21 is directly connected to the ground-based moving wheel 61 via a non-contact coupling 41. The small-diameter output shaft 62 is nested inside the non-contact coupling 41, and ball bearings are used to support the small-diameter output shaft 62 inside the non-contact coupling 41.

[0024] Among them, the small-diameter output shaft 62 uses a shoulder to achieve axial positioning with the magnetic coupling assembly 4 (i.e., the large-diameter output shaft).

[0025] The power output end consists of two sets of motors. The first motor drives the planetary carrier 22 in the outer sealed housing 1 via gear transmission. The second motor fixes or drives the sun gear 34 via gear transmission. An electromagnet is installed on the main drive internal gear ring 21 and the outer sealed housing 1. The electromagnet is used to fix the main drive internal gear ring 21. The radial ball bearing 32 is used to fix and position the small-diameter output shaft 62, providing radial support for the small-diameter output shaft 62. The large-diameter output shaft is a magnetic coupling assembly 4. The waterproofing requirement at the connection with the planetary gear reducer assembly 3 is eliminated by the inter-section isolation cover 42. Only the transmission end of the small-diameter output shaft 62 needs to be sealed and waterproofed by rotating the sealing ring, thereby effectively improving the structural sealing performance.

[0026] Among them, the power output end preferably adopts a closed-loop brushless motor, which has the advantages of high-precision control, high starting torque and low-speed stability.

[0027] In this embodiment, the outer sealing housing 1 adopts a symmetrical design with a split center, and is fastened with bolts. The gaps are sealed with epoxy sealant. The outer sealing housing 1 provides assembly support points and positioning points for each actuator.

[0028] The planetary gear reducer assembly 3 includes an external gear ring 31, a radial ball bearing 32, planetary gears 33, and a propulsion sun gear 34. The output shaft end of the propulsion sun gear 34 is connected to the dynamic transmission assembly 6 via a magnetic coupling assembly 4. The radial ball bearing 32 is rotatably connected to the planet carrier 22 via the planetary gears 33. The external gear ring 31 is located on the outside of the radial ball bearing 32. The radial ball bearing 32 is triangularly distributed and meshes with the propulsion sun gear 34.

[0029] In this embodiment, the planetary gear reducer assembly 3 consists of an external gear ring 31, radial ball bearings 32, planetary gears 33, and a propulsion sun gear 34. Through the combined motion of the external gear ring 31, planetary gears 33, and propulsion sun gear 34, the high-speed rotation of the input shaft can be converted into a low-speed rotation of the output shaft. Furthermore, the required reduction ratio can be adjusted via the command execution terminal 5 to achieve different output speeds and torques. The propulsion sun gear 34 is connected to the surface propulsion propeller 63 via a small-diameter output shaft 62. The main drive internal gear ring 21 is connected to the ground-based moving wheel 61 via a non-contact coupling 41. A small-diameter output shaft is nested within a large-diameter output shaft and supported by ball bearings. The output shaft is designed with shoulders and grooves in conjunction with washers for axial positioning.

[0030] The planetary gear parameters were calculated using MATLAB by importing the planetary gear design principles and related formulas:

[0031] The external gear ring 31 has a module of 1 (pressure angle of 20°), the propulsion sun gear 34 has 39 teeth, the planet gear 33 has 36 teeth, and the external gear ring 31 has 111 teeth (transmission ratio 1:3.846153846153846). By adjusting the working state of the planet gear 33, the purpose of meeting both water and land needs can be achieved.

[0032] In this embodiment, the propulsion sun gear 34 outputs the surface propulsion propeller 63 through a single shaft, and the planetary carrier is used as the drive input shaft. The main drive internal gear ring 21 is used to output the ground movement wheel 61, realizing amphibious dynamic switching.

[0033] The magnetic coupling assembly 4 includes a non-contact coupling 41 and a section isolation cover 42. The section isolation cover 42 is fixedly connected to the outer sealing housing 1. The section isolation cover 42 is placed on the outside of the non-contact coupling 41 and is used to separate the magnet in the non-contact coupling 41.

[0034] In this embodiment, the non-contact coupling 41 is a non-contact coupling composed of two magnets. A section isolation cover 42 is provided in the middle of the magnets to separate them. Therefore, there is no need to consider waterproofing of the non-contact coupling 41. It is only necessary to seal and waterproof the small-diameter output shaft 62 connected to the water surface drive propeller 63.

[0035] The dynamic transmission component 6 includes a ground-moving wheel 61, a small-diameter output shaft 62, and a water-surface transmission propeller 63. The water-surface transmission propeller 63 is located inside the ground-moving wheel 61. The small-diameter output shaft 62 is fixedly connected to the water-surface transmission propeller 63. The non-contact coupling 41 is connected to the output shaft of the propulsion sun gear 34. The ground-moving wheel 61 is connected to the output end of the non-contact coupling 41.

[0036] The working principle and usage of this invention are as follows:

[0037] In step S1, when in ground driving posture, the sun gear 34 is fixed and the planetary carrier 22 is directly driven by the motor at the output end of the main drive internal gear ring 21, so that the planetary carrier 22 and the main drive internal gear ring 21 rotate in the same direction. The outer gear ring 31 is driven to rotate through the radial ball bearing 32, thereby amplifying the power input torque and increasing the output torque of the outer gear ring 31. The outer gear ring 31 drives the ground driving wheel 61 through the non-contact coupling 41 to meet the traction requirements on land.

[0038] In step S2, when in the water propulsion posture, by fixing the external gear ring 31, the motor drives the planetary carrier 22 from the output end of the transmission gear 23, so that the planetary carrier 22 and the propulsion sun gear 34 move in the same direction, so that the propulsion sun gear 34 directly drives the small diameter output shaft 62 to drive the water surface propulsion propeller 63. By controlling the driving speed of the motor on the water surface propeller 63, the speed of the propeller is adjusted to meet the water propulsion speed requirements.

[0039] Step S3: When the vehicle needs to be used in reverse on land or water, the power input of the motor drive mode in step S1 or S2 is reversed through the command execution terminal 5, so that reverse transmission is achieved to realize reverse gear transportation.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An amphibious wheel assembly structure, comprising an outer sealed housing (1), a command execution end (5), and a dynamic transmission component (6), characterized in that: The outer sealing housing (1) is equipped with an outer contour output component (2), a planetary gear reducer assembly (3), and a magnetic coupling assembly (4). The outer contour output component (2) is used as a drive end to synchronously drive the dynamic transmission component (6) for amphibious movement. The planetary gear reducer assembly (3) is used to rotate the input shaft to adjust the output speed and torque. The magnetic coupling assembly (4) is installed between the dynamic transmission component (6) and the planetary gear reducer assembly (3). The outer contour output assembly (2) includes a main drive internal gear ring (21), an assembly planetary carrier (22), and a driven gear (23). The driven gear (23) is located on the outside of the assembly planetary carrier (22). The driven gear (23) meshes with the main drive internal gear ring (21). The main drive internal gear ring (21) is fixedly connected to the assembly planetary carrier (22) through an output shaft and is used to drive the assembly planetary carrier (22) to rotate. The driven gear (23) drives the planetary gear reducer assembly (3) through a brushless motor. The planetary gear reducer assembly (3) includes an external gear ring (31), radial ball bearings (32), planetary gears (33), and a propulsion sun gear (34). The output shaft end of the propulsion sun gear (34) is connected to the dynamic transmission assembly (6) through a magnetic coupling assembly (4). The radial ball bearings (32) are rotatably connected to the planet carrier (22) through the planetary gears (33). The external gear ring (31) is located on the outside of the radial ball bearings (32). The radial ball bearings (32) are triangularly distributed and mesh with the propulsion sun gear (34).

2. The amphibious wheel assembly structure according to claim 1, characterized in that: The magnetic coupling assembly (4) includes a non-contact coupling (41) and a section isolation cover (42). The section isolation cover (42) is fixedly connected to the outer sealing box (1). The section isolation cover (42) is placed on the outside of the non-contact coupling (41) to separate the magnet in the non-contact coupling (41).

3. The amphibious wheel assembly structure according to claim 2, characterized in that: The dynamic transmission component (6) includes a ground-moving wheel (61), a small-diameter output shaft (62), and a water-surface transmission propeller (63). The water-surface transmission propeller (63) is disposed inside the ground-moving wheel (61). The small-diameter output shaft (62) is fixedly connected to the water-surface transmission propeller (63). The non-contact coupling (41) is connected to the output shaft of the propulsion sun gear (34). The ground-moving wheel (61) is connected to the output end of the non-contact coupling (41).

4. The method of using the amphibious wheel assembly structure according to claim 1, characterized in that: Includes the following steps: In step S1, when the vehicle is in ground driving posture, the fixed propulsion sun gear (34) is used to drive the assembly planetary carrier (22) directly through the motor at the output end of the main drive internal gear ring (21), so that the assembly planetary carrier (22) and the main drive internal gear ring (21) rotate in the same direction. The radial ball bearing (32) drives the outer gear ring (31) to rotate, thereby amplifying the power input torque and increasing the output torque of the outer gear ring (31). The outer gear ring (31) drives the ground driving wheel (61) through the non-contact coupling (41) to meet the traction requirements on land. In step S2, when the propulsion posture is on the water, by fixing the external gear ring (31), the assembly planetary carrier (22) is driven by the motor from the output end of the transmission gear (23), so that the assembly planetary carrier (22) and the propulsion sun gear (34) move in the same direction, so that the propulsion sun gear (34) directly drives the small diameter output shaft (62) to drive the water surface propulsion propeller (63). By controlling the driving speed of the motor on the water surface propeller (63), the speed of the propeller is adjusted to meet the propulsion speed requirements in the water. Step S3: When the ground or water driving posture needs to be reversed, the power input of the motor end drive mode in step S1 or step S2 is reversed through the command execution terminal (5) so that reverse transmission can be realized for reverse transportation.

Images