Underwater two-stage planet corner speed reducer

Abstract

The underwater two-stage planet corner speed reducer comprises a box body, an input flange and an output flange, an input shaft is vertically installed on the inner wall of the input flange through a bearing, a first bevel gear is installed at the end, extending into the box body, of the input shaft, and a sun gear tooth shaft is further transversely installed in an inner cavity of the box body; the outer wall of the sun gear shaft is sleeved with a second bevel gear meshed with the first bevel gear. A plurality of second-level planet gears are installed on the circumference of the tooth portion of the left end of the sun gear shaft in a meshed mode, a core shaft is installed in an inner hole of each second-level planet gear through a bearing, and each core shaft is fixedly connected with an output planet carrier. Sealing rings are installed in the input end cover and the output end cover, lubricating grease is filled in the input end cover and the output end cover, sealing performance of equipment is enhanced, and the sealing rings are prevented from being abraded by silt through baffles. And secondly, a two-stage planetary gear structure is adopted, two-stage speed reduction is achieved, and high-torque output is provided. Finally, due to the fact that the input shaft and the output shaft are vertically arranged, the structure is compact, and the problem of space limitation is adapted and relieved.

Description

Technical Field

[0001] The invention relates to the technical field of transmission devices, in particular to an underwater double-stage planetary angular reducer. Background Art

[0002] Under the specific conditions of underwater operations, the reliability of mechanical equipment is particularly critical. Since traditional reducers face the problem of insufficient sealing performance when used underwater, they are often vulnerable to high pressure and corrosive substances, which not only increases the risk of equipment failure, but also may lead to a significant shortening of service life. In many cases, operations in mixing tanks or pools require the use of angle reducers with large reduction ratios to adapt to different power and torque requirements. The large reduction ratio allows the reducer to provide higher torque at a lower output speed to meet high power requirements. Therefore, a corner reducer designed for underwater environments with high torque output, excellent sealing performance and corrosion resistance is developed. Summary of the invention

[0003] The object of the present invention is to provide an underwater two-stage planetary angular reducer to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: comprising a housing, a bearing hole is provided at the top of the housing and an input flange is installed on the outside through the bearing hole, a bearing hole is provided at the left end of the housing and an inner gear ring and an output flange are installed through the bearing hole, an input shaft is vertically installed on the inner wall of the input flange through a bearing, the input shaft is also installed inside the housing through a bearing, a first bevel gear is installed on one end of the input shaft extending into the housing, a sun gear shaft is also installed horizontally on the inner cavity of the housing, a second bevel gear meshing with the first bevel gear is sleeved on the outer wall of the sun gear shaft, and the middle and right sides of the sun gear shaft are respectively installed on the inner wall of the housing through positioning bearings; a plurality of secondary planetary gears are installed on the circumferential meshing of the toothed portion at the left end of the sun gear shaft, a mandrel is installed on the inner hole of each secondary planetary gear through a bearing, and each mandrel is fixedly connected to the output planet carrier, an inner gear ring is fixedly installed on the housing through bolts and the inner gear ring meshes with the secondary planetary gear, and the left and right ends of the output planet carrier are installed in the inner cavity of the housing through a first bearing and a second bearing.

[0005] Preferably, an input end cover is installed on the outer end of the input flange, an output end cover is installed on the outer end of the output flange, a plurality of first sealing rings are installed on the inner wall of the input end cover, a plurality of second sealing rings are installed on the inner wall of the output end cover, and sealing grease is filled between the internal cavities of the input end cover and the output end cover.

[0006] Preferably, a baffle is installed on the outer side of the second sealing ring.

[0007] Preferably, the output planet carrier is connected to the output shaft as a whole.

[0008] Preferably, the outer wall of the box is coated with an anti-corrosion coating.

[0009] Preferably, the number of the secondary planetary gears is 3 or 4.

[0010] Preferably, the sun gear shaft is a structure in which the sun gear and the gear shaft are designed as an integrated whole.

[0011] The invention proposes a two-stage planetary angular reducer for underwater use, which has the following beneficial effects: first, by installing sealing rings in the input and output end covers, and filling grease in the internal cavity of the end covers, when the product is running, an oil film is formed between the outer surface of the shaft and the seal, which acts as a seal, thereby enhancing the sealing performance of the equipment, and preventing mud and sand from wearing the sealing ring through the baffle. Secondly, the outer wall of the housing is coated with an anti-corrosion coating to improve corrosion resistance. Furthermore, a two-stage planetary gear structure is adopted, including the meshing of bevel gears and planetary gears, to achieve secondary reduction and provide high torque output. The sun gear shaft is designed as a sun gear and a standard gear shaft as a whole, which reduces the number of product parts and makes the overall structure compact.

[0012] Finally, the device adopts vertically configured input and output shafts, which is compact and easy to install in narrow underwater environments, adapting to and alleviating the problem of space limitations. Its installation method is highly flexible and easy to adjust according to the layout and working conditions of underwater equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional schematic diagram of the present invention; Figure 2 It is a schematic diagram of the meshing of the sun gear shaft tooth portion and the secondary planetary gear of the present invention; Figure 3 This is an axial view of the input end face of the present invention.

[0014] Figure 4 It is an axial view of the output end face of the present invention.

[0015] In the figure: 1. casing, 2. input flange, 3. output flange, 4. input shaft, 5. first bevel gear, 6. sun gear shaft, 7. second bevel gear, 8. locating bearing, 9. secondary planetary gear, 10. spindle, 11. output planetary carrier, 12. inner gear ring, 13. first bearing, 14. second bearing, 15. input end cover, 16. output end cover, 17. first sealing ring, 18. second sealing ring, 19. baffle. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-4 The present invention provides a technical solution: an underwater double-stage planetary angular reducer, comprising a housing 1, the outer wall of which is coated with an anti-corrosion coating. A bearing hole is provided at the top of the housing 1, and an input flange 2 is installed on the outer side through the bearing hole. A bearing hole is provided at the left end of the housing 1, and an inner gear ring and an output flange 3 are installed through the bearing hole. An input shaft 4 is vertically installed on the inner wall of the input flange 2 through a bearing. The input shaft 4 is also installed inside the housing 1 through a bearing. The housing provides a stable support for the input shaft, thereby ensuring its stability and accuracy. A first bevel gear 5 is installed at one end of the input shaft 4 extending into the housing 1. A sun gear shaft 6 is also installed horizontally in the inner cavity of the housing 1. A second bevel gear 7 meshing with the first bevel gear 5 is sleeved on the outer wall of the sun gear shaft 6. The middle and right sides of the sun gear shaft 6 are respectively installed on the inner wall of the housing 1 through positioning bearings 8, which are used to support the sun gear shaft 6 and ensure its rotation accuracy.

[0018] A number of secondary planetary gears 9 are installed in a circumferential meshing manner on the toothed portion at the left end of the sun gear shaft 6. The number of planetary gears can be designed to be 3 or 4 according to different speed ratio requirements and output torque requirements. A core shaft 10 is installed on the inner hole of each secondary planetary gear 9 through a bearing. Each core shaft 10 is fixedly connected to an output planetary carrier 11. An inner gear ring 12 is fixedly installed on the housing 1 through bolts, and the inner gear ring 12 is meshed with the secondary planetary gears 9. The left and right ends of the output planetary carrier 11 are installed in the inner cavity of the housing 1 through a first bearing 13 and a second bearing 14.

[0019] An input end cover 15 is installed at the outer end of the input flange 2, and an output end cover 16 is installed at the outer end of the output flange 3. A plurality of first sealing rings 17 are installed on the inner wall of the input end cover 15, and a plurality of second sealing rings 18 are installed on the inner wall of the output end cover 16. Sealing grease is filled between the internal cavities of the input end cover 15 and the output end cover 16. When the reducer is used underwater, its sealing must meet strict standards. The state of being filled with grease helps to enhance the sealing effect, and the grease can form a protective film between the inside of the box and the surface of the parts, thereby extending the service life of the equipment. A baffle 19 is installed on the outside of the second sealing ring 18 to prevent mud and sand from contacting the lip of the sealing ring.

[0020] The output planetary carrier 11 is designed to be integrated with the output shaft to reduce the space structure. The output planetary carrier transmits torque to other equipment. The structure of the output planetary carrier can be designed according to customer requirements.

[0021] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific operation is as follows: During operation, when the input shaft 4 rotates, the first bevel gear 5 rotates accordingly, and drives the second bevel gear 7 on the sun gear shaft 6 through meshing to achieve the first stage of deceleration. The sun gear shaft 6 of this design is designed as a sun gear and a standard gear shaft as a whole, with a compact structure. The rotation of the sun gear shaft 6 drives the secondary planetary gear 9 to rotate as a whole along the tooth surface trajectory of the inner gear ring 12, and the secondary planetary gear 9 meshes with the inner gear ring 12 to achieve the second stage of deceleration. Since the secondary planetary gear 9 is fixedly connected to the output planet carrier 11, the rotation of the output planet carrier 11 transmits the torque to the output shaft, thereby achieving the purpose of deceleration.

[0022] The underwater two-stage planetary angular reducer designed in this application has the following advantages in structural design: 1. Sealing Use of input end cover and output end cover: The outer ends of the input flange 2 and the output flange 3 are respectively installed with an input end cover 15 and an output end cover 16, and the first sealing ring 17 and the second sealing ring 18 are installed inside these end covers to help prevent water and other impurities from entering the reducer, thereby improving the sealing performance.

[0023] Lubrication of the sealing ring: Fill sealing grease between the internal cavities of the input end cover and the output end cover. This not only enhances the sealing effect, but the grease can also form a protective film between the inside of the box and the surface of the parts, further extending the service life of the equipment.

[0024] Installation of baffle: A baffle 19 is installed outside the second sealing ring 18, which can prevent mud and sand from contacting the lip of the sealing ring, thereby protecting the sealing ring from wear.

[0025] 2. Corrosion resistance Coating of anti-corrosion coating: The outer wall of the box 1 is coated with an anti-corrosion coating, which can effectively resist corrosive substances in the underwater environment and extend the service life of the equipment.

[0026] 3. High torque output Double-stage planetary gear structure: In view of its application in underwater environment, the requirements for reduction ratio are correspondingly higher. The reducer adopts a double-stage planetary gear structure, including the meshing of the first bevel gear 5 and the second bevel gear 7, and the meshing of the secondary planetary gear 9 and the inner ring gear 12. This structural design can achieve two-stage reduction, thereby providing high torque output.

[0027] Precise component design: The sun gear shaft is designed as a combination of the sun gear and the shaft. The integrated structure makes the overall structure compact, thereby reducing the axial space size of the output reducer and the equipment installation size, ensuring high transmission efficiency and low noise of the entire transmission system.

[0028] 4. More compact structure: Thanks to the vertical configuration of the input and output shafts, it can be easily installed even in a narrow underwater environment, perfectly adapting to the strict space requirements of underwater equipment and effectively alleviating the problem of space limitations. In addition, this installation method is extremely flexible and can be easily adjusted according to the specific underwater equipment layout and working conditions.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An underwater two-stage planetary angular reducer, comprising a housing (1), a top end of the housing (1) being provided with a bearing hole and an input flange (2) being mounted on the outside through the bearing hole, a left end of the housing (1) being provided with a bearing hole and an inner gear ring and an output flange (3) being mounted through the bearing hole, characterized in that: An input shaft (4) is vertically mounted on the inner wall of the input flange (2) via a bearing, and the input shaft (4) is also mounted inside the housing (1) via a bearing, and one end of the input shaft (4) extending into the housing (1) is mounted with a first bevel gear (5), and a sun gear shaft (6) is also transversely mounted in the inner cavity of the housing (1), and the outer wall of the sun gear shaft (6) is sleeved with a second bevel gear (7) that meshes with the first bevel gear (5), and the middle and right sides of the sun gear shaft (6) are respectively mounted on the inner wall of the housing (1) via positioning bearings (8); A plurality of secondary planetary gears (9) are mounted in meshing engagement with the toothed portion of the left end of the sun gear shaft (6); a core shaft (10) is mounted on the inner hole of each secondary planetary gear (9) via a bearing; each core shaft (10) is fixedly connected to an output planetary carrier (11); an inner gear ring (12) is fixedly mounted on the housing (1) via bolts and the inner gear ring (12) meshes with the secondary planetary gear (9); and left and right ends of the output planetary carrier (11) are mounted in the inner cavity of the housing (1) via a first bearing (13) and a second bearing (14).

2. The underwater double-stage planetary angular reducer according to claim 1, characterized in that: An input end cover (15) is mounted on the outer end of the input flange (2), an output end cover (16) is mounted on the outer end of the output flange (3), a plurality of first sealing rings (17) are mounted on the inner wall of the input end cover (15), a plurality of second sealing rings (18) are mounted on the inner wall of the output end cover (16), and sealing grease is filled between the internal cavities of the input end cover (15) and the output end cover (16).

3. The underwater double-stage planetary angular reducer according to claim 2, characterized in that: A baffle (19) is installed outside the second sealing ring (18).

4. The underwater double-stage planetary angular reducer according to claim 1, characterized in that: The output planet carrier (11) is connected to the output shaft as a whole.

5. The underwater double-stage planetary angular reducer according to claim 1, characterized in that: The outer wall of the box body (1) is coated with an anti-corrosion coating.

6. The underwater double-stage planetary angular reducer according to claim 1, characterized in that: The number of the secondary planetary gears (9) is 3 or 4.

7. The underwater double-stage planetary angular reducer according to claim 1, characterized in that: The sun gear shaft (6) is a structure in which the sun gear and the gear shaft are designed as an integrated whole.

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