An outboard removable sealed transmission

Abstract

The application discloses a detachable sealing transmission device outside the hull. The sealing transmission device comprises a driving source, a first bearing assembly, a shaft connecting rod, a sealing device, a second bearing assembly and a transmission shaft. The shaft connecting rod is connected with the transmission shaft, the transmission shaft is arranged outside the hull, and the shaft connecting rod is arranged in the cabin. The sealing device is arranged on the shaft connecting rod, and the sealing device is separated from the transmission shaft. The first bearing assembly is arranged at a first end of the shaft connecting rod, the second bearing assembly is arranged at a second end of the shaft connecting rod, the first end is an end away from the transmission shaft, and the second end is an end close to the transmission shaft. The driving source is arranged at the second end of the shaft connecting rod and is in transmission connection with the shaft connecting rod. The sealing device has a double sealing structure. The application provides the detachable sealing transmission device outside the hull, which is simple and reliable in structure, can guarantee sealing performance and is convenient to maintain.

Description

Technical Field

[0001] This invention relates to the field of transmission technology, and more specifically to an externally detachable sealed transmission device. Background Technology

[0002] In existing technologies, drive shafts generally require lubrication and sealing. However, existing sealing devices are either too complex in structure, making it difficult to guarantee stability and reliability, or too simple in structure, failing to provide a reliable seal. Moreover, existing drive shafts and sealing devices are integral structures, making them unsuitable for complex operating conditions, especially in scenarios where the conditions inside and outside the cabin differ significantly. Existing transmission and sealing structures present numerous problems and are inconvenient to maintain. Summary of the Invention

[0003] In view of the above-mentioned defects or improvement needs of the prior art, the present invention provides an externally detachable sealing transmission device, which has a simple and reliable structure, can guarantee sealing performance, and is easy to maintain.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] Some embodiments of this application provide an externally detachable sealing transmission device, the sealing transmission device including a drive source, a first bearing assembly, a shaft connecting rod, a sealing device, a second bearing assembly, and a transmission shaft;

[0006] The shaft connecting rod is connected to the drive shaft, the drive shaft is arranged outside the hull, and the shaft connecting rod is arranged inside the cabin;

[0007] The sealing device is arranged on the shaft connecting rod, and the sealing device is separate from the drive shaft;

[0008] The first bearing assembly is disposed at the first end of the shaft connecting rod, and the second bearing assembly is disposed at the second end of the shaft connecting rod. The first end is the end away from the transmission shaft, and the second end is the end close to the transmission shaft.

[0009] The drive source is located at the second end of the shaft connecting rod and is connected to the shaft connecting rod in a transmission manner.

[0010] The sealing device has a double sealing structure.

[0011] In some embodiments, the dual sealing structure includes a first sealing component and a second sealing component, the first sealing component including a plurality of O-rings and the second sealing component including a sealing packing ring.

[0012] In some embodiments, the second bearing assembly includes a bearing housing, the sealing device further includes a sealing bushing, the second sealing assembly further includes an adjusting gland, the adjusting gland is disposed on the shaft connecting rod, the sealing bushing is disposed between the bearing housing and the adjusting gland, and the plurality of O-rings include a first O-ring, a second O-ring, and a third O-ring, the first O-ring being disposed between the bearing housing and the sealing bushing, the second O-ring being disposed between the adjusting gland and the sealing bushing, and the third O-ring being disposed between the adjusting gland and the shaft connecting rod.

[0013] In some embodiments, the sealing bushing includes a first flange, a second flange, and a sleeve body. The first flange and the second flange are respectively located at both ends of the sleeve body. The first flange and the second flange protrude in opposite directions. The first flange is close to the shaft connecting rod, and the second flange is away from the shaft connecting rod.

[0014] A cavity is formed between the first flange, the sleeve, the adjusting cover and the shaft connecting rod, and the sealing packing ring is disposed in the cavity.

[0015] In some embodiments, the sleeve of the sealing bushing is inserted into the bearing housing, and the second flange of the sealing bushing is fixedly connected to the bearing housing by screws.

[0016] In some embodiments, one end of the adjusting gland is inserted into the sleeve of the sealing bushing, and the other end of the adjusting gland has a cover plate. The second sealing assembly further includes an adjusting screw, and the cover plate is adjustablely fixed to the sealing bushing by the adjusting screw.

[0017] In some embodiments, the sealing packing ring is an elastic element.

[0018] In some embodiments, the sealing transmission device further includes a splined sleeve, which is fixedly connected to the shaft connecting rod. One end of the transmission shaft has a spline, and the transmission shaft is connected to the splined sleeve via the spline. The transmission shaft is detachably connected to the splined sleeve via a locking screw.

[0019] In some embodiments, the bearing housing has a first side and a second side, the sleeve of the sealing bushing is disposed on the first side of the bearing housing, and the spline sleeve is disposed on the second side.

[0020] In some embodiments, there are at least two first O-rings, at least two second O-rings, and at least two third O-rings.

[0021] Compared with existing technologies, some embodiments of this invention employ double bearing support. The shaft connecting rod and drive shaft are connected via a splined sleeve. The drive shaft is located outside the hull, while the shaft connecting rod is located inside the cabin. The sealing device is located at the shaft connecting rod and is separate from the drive shaft. The drive shaft can be directly removed from the outside for easy replacement and maintenance. The sealing device employs a double seal: an O-ring provides a dynamic seal, and a sealing packing ring provides an emergency seal. Under normal conditions, the sealing packing ring is uncompressed; in emergencies, an emergency seal can be achieved by tightening the adjusting gland. The drive shaft and splined sleeve are connected via splines and locking screws. The splines transmit torque, and the locking screws secure the shaft axially. When removing the drive shaft from the outside, simply unscrew the locking screws to remove it. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an externally detachable sealed transmission device according to some embodiments of the present invention.

[0023] Figure 2 This is a schematic diagram of the overall partial structure of the externally detachable sealed transmission device according to some embodiments of the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. The interpretation of such terms should be made from the perspective of a person skilled in the art. For example, "above" or "below" should be understood as the positional relationship of the main structure or structure of a component, etc., in its initial state, which may be broken during movement. "...set on" should be understood as the general connection relationship of the components, not necessarily above.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly from the perspective of someone skilled in the art. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0028] refer to Figure 1 and Figure 2 This application provides an outboard detachable sealing transmission device, comprising a drive source 1, a first bearing assembly, a shaft connecting rod 4, a sealing device, a second bearing assembly, and a drive shaft 8. The shaft connecting rod 4 is connected to the drive shaft 8, which is located outboard and the shaft connecting rod 4 is located inside the cabin. The sealing device is located on the shaft connecting rod 4 and is separate from the drive shaft 8. The drive shaft 8 has a key 9 for fixing an actuator. A pressure-resistant structure 18 is provided between the outboard and cabin areas.

[0029] The first bearing assembly is disposed at the first end of the shaft connecting rod 4, and the second bearing assembly is disposed at the second end of the shaft connecting rod 4. The first end is the end away from the transmission shaft 8, and the second end is the end closer to the transmission shaft 8. The drive source 1 is disposed at the second end of the shaft connecting rod 4 and is drively connected to the shaft connecting rod 4.

[0030] The sealing device has a double sealing structure.

[0031] Some embodiments of this invention employ a double-bearing support system, with the drive shaft located outside the hull and the connecting rod inside the cabin. The sealing device is located at the connecting rod and is separate from the drive shaft, allowing the drive shaft to be directly removed from the outside for easy replacement and maintenance. The sealing device features a double-sealing structure, providing an emergency sealing function.

[0032] Some embodiments of the present invention employ a dual-bearing support. The first bearing assembly includes a fixed housing 2 and a first bushing 3, with the drive source 1 fixedly connected to the fixed housing 2. The first bushing 3 is disposed between the shaft connecting rod 4 and the fixed housing 2. This dual-bearing support provides stable transmission and support.

[0033] In some embodiments, the dual sealing structure includes a first sealing component and a second sealing component. The first sealing component includes a plurality of O-rings, and the second sealing component includes a sealing packing ring 15. The O-rings provide a dynamic seal, while the sealing packing ring provides an emergency seal. Under normal conditions, the sealing packing ring is in an uncompressed state. In an emergency, an emergency seal can be achieved by tightening the adjusting gland.

[0034] Specifically, in some embodiments, the second bearing assembly includes a bearing housing 7, the sealing device further includes a sealing sleeve 6, the second sealing assembly further includes an adjusting gland 5, the adjusting gland is disposed on the shaft connecting rod 4, the sealing sleeve is disposed between the bearing housing and the adjusting gland, and the plurality of O-rings include a first O-ring 14, a second O-ring 16, and a third O-ring 17. The first O-ring is disposed between the bearing housing and the sealing sleeve, the second O-ring is disposed between the adjusting gland and the sealing sleeve, and the third O-ring is disposed between the adjusting gland and the shaft connecting rod. In some embodiments, there are at least two first O-rings, at least two second O-rings, and at least two third O-rings. Figure 2 In the illustrated embodiment, there are two first O-rings, two second O-rings, and two third O-rings. Each O-ring is axially spaced apart. In this embodiment, the third O-ring is disposed between the adjusting cap and the shaft connecting rod. There is no relative movement between the contact parts of the first and second O-rings. The adjusting cap in contact with the third O-ring moves relative to the shaft connecting rod, thus providing a dynamic seal. The sealing packing ring provides an emergency seal. By providing the sealing packing ring, an emergency seal can be achieved in emergency situations, such as when the third O-ring fails.

[0035] In some embodiments, such as Figure 2As shown, the sealing device further includes a third sealing assembly, which includes an O-ring 19 and a bushing 20. The O-ring 19 is disposed on the side of the sealing packing ring 15 away from the third O-ring 17, that is, the third O-ring 17 is disposed on one side of the sealing packing ring 15, and the O-ring 19 is disposed on the other side of the sealing packing ring 15. The O-ring 19 is disposed between the sealing bushing 6 and the shaft connecting rod 4 via the bushing 20. By setting the third sealing assembly, a stable and reliable sealing structure can be further formed. Moreover, since the third O-ring 17 and the O-ring 19 are respectively disposed on both sides of the sealing packing ring 15, they can also achieve double sealing. The first sealing assembly, the second sealing assembly, and the third sealing assembly of this application form a triple sealing structure, which can provide multiple layers of protection.

[0036] In some embodiments, the sealing bushing 6 includes a first flange 61, a second flange 62, and a sleeve body 63. The first flange and the second flange are located at opposite ends of the sleeve body, with the first flange protruding in opposite directions. The first flange is closer to the shaft connecting rod, and the second flange is farther from the shaft connecting rod. A cavity is formed between the first flange 61, the sleeve body 63, the adjusting cap 5, and the shaft connecting rod 4, and the sealing packing ring 15 is disposed within the cavity. In some embodiments, the sealing packing ring 15 is an elastic element. Multiple sealing packing rings 15 can be arranged side by side. In some embodiments, one end of the adjusting cap 5 is inserted into the sleeve body 63 of the sealing bushing, and the other end of the adjusting cap 5 has a cover plate 51. The second sealing assembly also includes an adjusting screw 52, ​​and the cover plate 51 is adjustablely fixed to the sealing bushing 6 by the adjusting screw 52. Through the design of this embodiment of the application, the overall structure is simple, reliable, and easy to adjust.

[0037] In some embodiments, the sleeve 63 of the sealing bushing is inserted into the bearing housing 7, and the second flange 62 of the sealing bushing is fixedly connected to the bearing housing 7 by screws.

[0038] In some embodiments, the sealing transmission device further includes a splined sleeve 10, which is fixedly connected to the shaft connecting rod 4. One end of the transmission shaft 8 has a spline, and the transmission shaft is connected to the splined sleeve via the spline. The transmission shaft 8 is detachably connected to the splined sleeve 10 via a locking screw 81. The transmission shaft and the splined sleeve are connected by a spline and a locking screw. The spline is used to transmit torque, and the locking screw is used for axial fixation. When removing the transmission shaft from the outside, simply unscrewing the locking screw allows the transmission shaft to be removed.

[0039] In some embodiments, the bearing housing 7 has a first side 71 and a second side 72. The sleeve 63 of the sealing bushing is disposed on the first side 71 of the bearing housing, and the spline sleeve 10 is disposed on the second side 72. The shaft connecting rod is connected to the drive shaft via the spline sleeve. The drive shaft is arranged outside the hull, and the shaft connecting rod is arranged inside the cabin. The sealing device is disposed at the shaft connecting rod and is separate from the drive shaft. The drive shaft can be directly removed from outside the hull for easy replacement and maintenance. The sealing device adopts a double seal. The O-ring provides a dynamic seal, and the sealing packing ring provides an emergency seal. Under normal conditions, the sealing packing ring is in an uncompressed state. In an emergency, an emergency seal can be achieved by tightening the adjusting gland.

[0040] In some embodiments, the second bearing assembly further includes a second bushing 11, a copper spacer 12, and a retaining ring 13. The second bushing 11 is disposed between the spline sleeve 10 and the bearing housing 7. The retaining ring 13 is disposed at the end of the spline sleeve 10 away from the drive shaft 8, and the retaining ring 13 is connected to the spline sleeve 10 by screws. The copper spacer 12 is disposed between the retaining ring 13 and the second bushing 11. The second bearing assembly forms a stable support. In some embodiments, the first bearing assembly and the second bearing assembly may be of the same or different types, and may be sliding bearings or ball bearings. For example, the first bearing assembly may be a ball bearing, and the second bearing assembly may be a sliding bearing, or both the first and second bearing assemblies may be sliding bearings. Specifically, the bearing bushings (first bushing and second bushing) are provided with lubrication grooves for lubrication.

[0041] It is understood that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. It is understood that as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification.

[0042] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An externally detachable sealed transmission device, characterized in that, The sealing transmission device includes a drive source, a first bearing assembly, a shaft connecting rod, a sealing device, a second bearing assembly, and a transmission shaft; The shaft connecting rod is connected to the drive shaft, the drive shaft is arranged outside the hull, and the shaft connecting rod is arranged inside the cabin; The sealing device is arranged on the shaft connecting rod, and the sealing device is separate from the drive shaft; The first bearing assembly is disposed at the first end of the shaft connecting rod, and the second bearing assembly is disposed at the second end of the shaft connecting rod. The first end is the end away from the transmission shaft, and the second end is the end close to the transmission shaft. The drive source is located at the second end of the shaft connecting rod and is connected to the shaft connecting rod in a transmission manner. The sealing device has a double sealing structure; The dual sealing structure includes a first sealing component and a second sealing component. The first sealing component includes a plurality of O-rings, and the second sealing component includes a sealing packing ring. The second bearing assembly includes a bearing housing, the sealing device further includes a sealing bushing, the second sealing assembly further includes an adjusting gland, the adjusting gland is disposed on the shaft connecting rod, the sealing bushing is disposed between the bearing housing and the adjusting gland, and the plurality of O-rings include a first O-ring, a second O-ring, and a third O-ring, the first O-ring is disposed between the bearing housing and the sealing bushing, the second O-ring is disposed between the adjusting gland and the sealing bushing, and the third O-ring is disposed between the adjusting gland and the shaft connecting rod; The sealing transmission device also includes a splined sleeve, which is fixedly connected to the shaft connecting rod. One end of the transmission shaft has a spline, and the transmission shaft is connected to the splined sleeve through the spline. The transmission shaft is detachably connected to the splined sleeve through a locking screw.

2. The detachable sealing transmission device for external use according to claim 1, characterized in that, The sealing bushing includes a first flange, a second flange, and a sleeve body. The first flange and the second flange are located at both ends of the sleeve body, and the first flange and the second flange protrude in opposite directions. The first flange is close to the shaft connecting rod, and the second flange is away from the shaft connecting rod. A cavity is formed between the first flange, the sleeve, the adjusting cover and the shaft connecting rod, and the sealing packing ring is disposed in the cavity.

3. The detachable sealing transmission device for external use according to claim 2, characterized in that, The sleeve of the sealing bushing is inserted into the bearing housing, and the second flange of the sealing bushing is fixedly connected to the bearing housing by screws.

4. The detachable external sealing transmission device according to claim 3, characterized in that, One end of the adjusting cover is inserted into the sleeve of the sealing bushing, and the other end of the adjusting cover has a cover plate. The second sealing assembly also includes an adjusting screw, and the cover plate is adjustablely fixed on the sealing bushing by the adjusting screw.

5. The detachable sealing transmission device for external use according to claim 4, characterized in that, The sealing packing ring is an elastic element.

6. The detachable sealing transmission device for external use according to claim 5, characterized in that, The bearing housing has a first side and a second side, the sleeve of the sealing bushing is disposed on the first side of the bearing housing, and the spline sleeve is disposed on the second side.

7. The detachable sealing transmission device for external use according to claim 6, characterized in that, There are at least two first O-rings, at least two second O-rings, and at least two third O-rings.

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