Speed reducer used in deepwater environment

Abstract

The utility model provides a speed reducer used in a deepwater environment, belongs to the technical field of speed reducers, and solves the technical problems that the sealing performance of an existing sealing structure is damaged along with deformation of a shell and the like. The speed reducer used in the deepwater environment comprises a shell, the shell comprises a first shell body and a second shell body, a groove is formed in the left side of the first shell body, a rubber wrapping protruding block is integrally formed on the right side of the second shell body, the rubber wrapping protruding block is matched with the groove, the first shell body is embedded in the right side of the second shell body, and a first through hole is formed in the groove; a first sealing ring is arranged at the left end of the first through hole and fixedly connected with the first shell, a containing groove is formed in the right side of the rubber wrapping protruding block, a second through hole extending to the left side of the second shell communicates with the interior of the containing groove, and a second sealing ring is arranged at the right end of the second through hole. The sealing device has the advantages of dispersing deepwater pressure, utilizing the deepwater pressure to extrude the sealing rubber part to improve the sealing function and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of speed reducers, and relates to a deep-water speed reducer, in particular to a speed reducer for deep-water environments. Background Art

[0002] A speed reducer is an independent component composed of gear transmission, worm transmission, and gear-worm transmission enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between the prime mover and the working machine. In deep-water environments, the challenges faced by speed reducers are more severe. High water pressure and complex water quality pose higher requirements for sealing performance. Speed reducers in deep-water environments need to have excellent sealing performance because good sealing can prevent lubricating oil leakage and the intrusion of external impurities.

[0003] After retrieval, as disclosed in a Chinese patent document for a subsea deep-water transmission operation speed reducer [Application No.: 201620950418.3; Publication No.: CN205937759U]. This subsea deep-water transmission operation speed reducer is provided with a one-way bearing seat and a combined sealing device. The external uses a sealing structure that is corrosion-resistant, high-pressure-resistant, and can prevent the erosion of silt and sand dust. The internal uses a skeleton oil seal structure, which solves the sealing requirements of high pressure and two-way leakage prevention under the sea floor.

[0004] Although the subsea deep-water transmission operation speed reducer disclosed in this patent improves the sealing performance, the strong water pressure in deep water will cause the deformation of the speed reducer housing, resulting in the deformation of the sealing structure following the housing deformation, and the sealing performance is damaged. Summary of the Utility Model

[0005] The purpose of the present utility model is to address the above problems existing in the prior art and propose a speed reducer for deep-water environments. The technical problem to be solved by this utility model is: how to achieve enhanced sealing performance by utilizing deep-water pressure.

[0006] The purpose of the present utility model can be achieved by the following technical solutions:

[0007] A speed reducer for deep-water environments includes a housing. The housing includes a first outer shell and a second outer shell. A groove is provided on the left side of the first outer shell, and a rubber-wrapped convex block is integrally formed on the right side of the second outer shell. The rubber-wrapped convex block is adapted to the groove. The first outer shell is fitted into the right side of the second outer shell. A first through hole is provided in the groove, and a first sealing ring is provided at the left end of the first through hole. The first sealing ring is fixedly connected to the first outer shell. A receiving groove is provided on the right side of the rubber-wrapped convex block, and a second through hole extending to the left side of the second outer shell is communicated with the receiving groove. A second sealing ring is provided at the right end of the second through hole. The second sealing ring is fixedly connected to the second outer shell. The opposite sides of the first outer shell and the second outer shell are both arc-shaped. A motor is placed in the receiving groove, and the output end of the motor is key-connected to a speed reducer body. A plurality of mounting holes are equidistantly provided on the first outer shell.

[0008] The working principle of the utility model is: the reducer is placed in the storage groove and the groove, the rubber-wrapped protrusion of the second shell is embedded in the groove of the first shell, and after the first shell and the second shell are engaged, rust-proof screws are driven into the mounting holes for reinforcement, and the outside is in an arc shape in contact with the water body. When the arc structure is subjected to external pressure, the pressure can be evenly dispersed to the entire shell, reducing the occurrence of stress concentration. This uniform pressure distribution helps to improve the pressure resistance of the structure, and the deformation into an arc shape is squeezed inward, so that the rubber layer outside the rubber-wrapped protrusion is tightly squeezed between the first shell and the second shell, and the deep water pressure is used to increase the sealing.

[0009] The reducer body is clamped between the receiving groove and the concave groove.

[0010] By adopting the above structure, the reducer is protected in the housing, and there is some surplus space around the reducer to accommodate the contraction of the rubber-wrapped protrusions in deep water, thereby providing protection for the reducer body.

[0011] The reducer body comprises a first output shaft and a second output shaft. The first output shaft is arranged in the first through hole, and the second output shaft is arranged in the second through hole.

[0012] With the above structure, the first output shaft and the second output shaft are arranged in the arc-shaped middle section of the first shell and the second shell, dispersing the deep water pressure to the surrounding areas, which is the place with the strongest ability to withstand high pressure, and reducing the loss of the reducer caused by the deep water pressure.

[0013] The first output shaft and the second output shaft are both fixed with bearing isolators and sealed bearings. The two bearing isolators are respectively arranged at the opposite ends of the two sealed bearings. The two sealed bearing fixed ends are respectively fixedly connected to the first outer shell and the second outer shell. The two bearing isolators are respectively in contact with the first sealing ring and the second sealing ring.

[0014] With the above structure, during the rotation of the first output shaft and the second output shaft, the movable end of the sealed bearing rotates with the first output shaft and the second output shaft, playing a waterproof role, and at the same time plays a role in fixing the reducer and the first shell and the second shell. The bearing isolator contacts the first sealing ring and the second sealing ring to form a second waterproof part to further improve the waterproof performance. The first sealing ring and the second sealing ring are preferentially tightened and deformed during the pressure process to reduce the pressure on the bearing isolator. The bearing isolator itself increases the waterproof sealing performance inside the shell through the performance of its labyrinth oil seal.

[0015] Compared with the existing technology, the reducer used in deep water environment has the following advantages:

[0016] 1. The arc-shaped outer shell disperses the deep-water pressure, reduces the occurrence of stress concentration, improves the pressure resistance of the structure, and at the same time makes the arc of the shell tighten towards the end in deep water to strengthen the extrusion of the rubber layer, thereby improving the sealing performance. The deformation caused by the deep-water pressure is used to improve the sealing effect, avoiding the situation where the existing deformation turns outwards and damages the sealing structure.

[0017] 2. By setting up a sealed bearing and cooperating with the first sealing ring and the second sealing ring to form a two-layer waterproof structure with the bearing isolator, the waterproof performance is improved, and the protection of the internal speed reducer is strengthened. Brief Description of the Drawings

[0018] Figure 1 is the structural schematic diagram of the present utility model.

[0019] Figure 2 is the structural schematic diagram of the first outer shell part of the present utility model.

[0020] Figure 3 is the structural schematic diagram of the second outer shell part of the present utility model.

[0021] Figure 4 is the structural schematic diagram of the speed reducer part of the present utility model.

[0022] Figure 5 is the structural sectional schematic diagram of the shell part of the present utility model.

[0023] In the figure, 101, the first outer shell; 102, the mounting hole; 103, the first through hole; 104, the first sealing ring; 201, the second outer shell; 202, the receiving groove; 203, the second through hole; 204, the second sealing ring; 205, the rubber-wrapped convex block; 3, the speed reducer; 301, the first output shaft; 302, the second output shaft; 4, the bearing isolator; 5, the sealed bearing; 6, the motor. Detailed Description of the Preferred Embodiments

[0024] The following are the specific embodiments of the present utility model in combination with the drawings, and the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0025] Such as Figures 1 - 5As shown in the figure, the reducer used in the deep - water environment includes a housing. The housing includes a first outer shell 101 and a second outer shell 201. A groove is provided on the left side of the first outer shell 101. A rubber - wrapped convex block 205 is integrally formed on the right side of the second outer shell 201. The rubber - wrapped convex block 205 is adapted to the groove. The first outer shell 101 is fitted into the right side of the second outer shell 201. A first through - hole 103 is provided in the groove. A first sealing ring 104 is arranged at the left end of the first through - hole 103. The first sealing ring 104 is fixedly connected to the first outer shell 101. A receiving groove 202 is provided on the right side of the rubber - wrapped convex block 205. A second through - hole 203 extending to the left side of the second outer shell 201 is communicated with the receiving groove 202. A second sealing ring 204 is arranged at the right end of the second through - hole 203. The second sealing ring 204 is fixedly connected to the second outer shell 201. The shapes of the opposite sides of the first outer shell 101 and the second outer shell 201 are both arc - shaped. A motor 6 is placed in the receiving groove 202. The output end of the motor 6 is key - connected to a reducer body 3. A plurality of mounting holes 102 are equidistantly arranged on the first outer shell 101. In this embodiment, the convex block of the rubber - wrapped convex block 205 is integrally formed with the second outer shell 201, and the outer surface of the convex block is wrapped with rubber. The reducer body 3 is prior art. Except for the first output shaft 301 and the second output shaft 302, its common necessary structures are all prior art and will not be described in detail hereinafter. The reducer body 3 is placed in the receiving groove 202 and the groove. The rubber - wrapped convex block 205 of the second outer shell 201 is embedded in the groove of the first outer shell 101. After the first outer shell 101 and the second outer shell 201 are fitted, anti - rust screws are driven through the mounting holes 102 for reinforcement. The external part is arc - shaped and contacts the water body. When the arc - shaped structure bears external pressure, it can evenly disperse the pressure to the entire housing, reducing the occurrence of stress concentration. This uniform pressure distribution helps to improve the pressure - resistance performance of the structure, and it deforms into an arc and squeezes inward, so that the rubber layer outside the rubber - wrapped convex block 205 is tightly squeezed between the first housing 101 and the second housing 201, using the deep - water pressure to increase the sealing performance.

[0026] The reducer body 3 is clamped between the receiving groove 202 and the groove. In this embodiment, the reducer body 3 is protected inside the housing, and there is some extra space around the reducer body 3 to adapt to the shrinkage of the rubber - wrapped convex block 205 in deep water, providing protection for the reducer body 3.

[0027] The reducer body 3 includes a first output shaft 301 and a second output shaft 302. The first output shaft 301 passes through the first through - hole 103, and the second output shaft 302 passes through the second through - hole 203. In this embodiment, the first output shaft 301 and the second output shaft 302 pass through the middle of the arc of the first outer shell 101 and the second outer shell 201, dispersing the deep - water pressure to the surrounding areas, which is the place with the strongest high - pressure resistance ability, reducing the loss of the deep - water pressure on the reducer body 3.

[0028] The first output shaft 301 and the second output shaft 302 are both fixed with a bearing isolator 4 and a sealed bearing 5. The two bearing isolators 4 are respectively arranged at the opposite ends of the two sealed bearings 5. The fixed ends of the two sealed bearings 5 ​​are respectively interference fit with the first housing 101 and the second housing 201. The two bearing isolators 4 are respectively in contact with the first sealing ring 104 and the second sealing ring 204. In this embodiment, the bearing isolators 4 and the sealed bearings 5 ​​are both prior art. During the rotation of the first output shaft 301 and the second output shaft 302, the movable end of the sealed bearing 5 rotates with the first output shaft 301 and the second output shaft 302 to play a waterproof role, and at the same time plays a role in fixing the reducer body 3 and the first housing 101 and the second housing 201. The bearing isolator 4 is in contact with the first sealing ring 104 and the second sealing ring 204 to form a second waterproof part to further improve the waterproof performance. The first sealing ring 104 and the second sealing ring 204 are preferentially tightened and deformed during the pressure process to reduce the pressure on the bearing isolator 4. The bearing isolator 4 itself increases the waterproof sealing performance inside the housing through the performance of its labyrinth oil seal.

[0029] The first shell 101 and the second shell 201 are made of aluminum alloy. In this embodiment, the aluminum alloy is ductile under deep water pressure. The first shell 101 and the second shell 201 are extended to the surroundings in an arc shape under pressure, and more pressure is borne on the shell surface to protect the inner wall reducer body 3.

[0030] Working principle of the utility model: The speed reducer body 3 is placed in the storage groove 202 and the groove. The first output shaft 301 and the second output shaft 302 penetrate through the middle arc sections of the first housing 101 and the second housing 201, dispersing the deep - water pressure to the surrounding areas, which is the part with the strongest high - pressure resistance ability, reducing the loss of the deep - water pressure on the speed reducer body 3. During the rotation of the first output shaft 301 and the second output shaft 302, the movable end of the sealing bearing 5 rotates with the first output shaft 301 and the second output shaft 302, playing a waterproof role and also playing a role in fixing the speed reducer body 3 to the first housing 101 and the second housing 201. The bearing isolator 4 abuts against the first sealing ring 104 and the second sealing ring 204 to form a second waterproof part to further improve the waterproof performance. The first sealing ring 104 and the second sealing ring 204 preferentially tighten and deform under pressure to reduce the pressure on the bearing isolator 4. The bearing isolator 4 itself increases the waterproof and airtightness inside the housing through the performance of its labyrinth oil seal. The rubber - wrapped convex block 205 of the second housing 201 is embedded in the groove of the first housing 101. After the first housing 101 and the second housing 201 are fitted together, anti - rust screws are driven through the mounting holes 102 for reinforcement. The exterior is arc - shaped and contacts the water body. When the arc - shaped structure bears the external pressure, it can evenly disperse the pressure to the entire housing, reducing the occurrence of stress concentration. This uniform pressure distribution helps to improve the pressure - resistance performance of the structure, and it deforms into an arc and squeezes inward, tightly squeezing the rubber layer outside the rubber - wrapped convex block 205 between the first housing 101 and the second housing 201, using the deep - water pressure to increase the airtightness. The first housing 101 and the second housing 201 are extended to the surrounding areas through the arc - shaped shape under pressure, bearing more pressure on the housing surface to protect the speed reducer body 3 inside the inner wall.

[0031] In summary, through the arc - shaped housing, the deep - water pressure is dispersed, and the deep - water pressure is used to squeeze the sealing rubber part to improve the sealing function.

[0032] The specific embodiments described herein are merely illustrative of the spirit of the utility model. Those skilled in the art of the utility model can make various modifications or supplements to the described specific embodiments or use similar ways to substitute, but will not deviate from the spirit of the utility model or exceed the scope defined by the appended claims.

Claims

1. A reducer for use in a deep water environment, comprising a housing, characterized in that: The shell comprises a first shell (101) and a second shell (201), the first shell (101) is provided with a groove on the left side, the second shell (201) is provided with a rubber-wrapped protrusion (205) on the right side, the rubber-wrapped protrusion (205) is adapted to the groove, the first shell (101) is embedded in the right side of the second shell (201), a first through hole (103) is provided in the groove, a first sealing ring (104) is provided at the left end of the first through hole (103), the first sealing ring (104) is fixedly connected to the first shell (101), and the right side of the rubber-wrapped protrusion (205) is adapted to the groove. A storage groove (202) is provided, the storage groove (202) is connected to a second through hole (203) extending to the left side of the second shell (201), a second sealing ring (204) is provided at the right end of the second through hole (203), the second sealing ring (204) is fixedly connected to the second shell (201), the shapes of the opposite sides of the first shell (101) and the second shell (201) are both arc-shaped, a motor (6) is placed in the storage groove (202), the output end of the motor (6) is key-connected to the reducer body (3), and a plurality of mounting holes (102) are equidistantly provided on the first shell (101).

2. A reducer for use in a deep water environment according to claim 1, characterized in that: The reducer body (3) is clamped between the receiving groove (202) and the recessed groove.

3. The reducer for use in deep water environment according to claim 2, characterized in that: The reducer body (3) comprises a first output shaft (301) and a second output shaft (302); the first output shaft (301) is disposed in the first through hole (103), and the second output shaft (302) is disposed in the second through hole (203).

4. The reducer for use in a deep water environment according to claim 3, characterized in that: A bearing isolator (4) and a sealed bearing (5) are fixed on both the first output shaft (301) and the second output shaft (302); the two bearing isolators (4) are respectively arranged at the opposite ends of the two sealed bearings (5); the two sealed bearings (5) are respectively interference fit with the first housing (101) and the second housing (201); and the two bearing isolators (4) are respectively in contact with the first sealing ring (104) and the second sealing ring (204).

5. The reducer for use in a deep water environment according to claim 1, characterized in that: The first shell (101) and the second shell (201) are made of aluminum alloy.

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