Marine propeller coupling

Abstract

The utility model discloses a marine propeller coupling, which relates to the technical field of propeller couplings, and comprises a connecting mechanism and a transmission mechanism, the transmission mechanism comprises a power output shaft hub, and the outer side of one end of the power output shaft hub close to the connecting mechanism is fixedly sleeved with a power output flange. A fastening bolt is arranged between the power output shaft hub and the power output flange, the power output shaft hub and the power output flange are fixedly connected through the fastening bolt, the outer side of the end, away from the connecting mechanism, of the power output shaft hub is movably sleeved with a spherical sliding bearing, and a rolling bearing is arranged between the inner wall of the spherical sliding bearing and the outer wall of the power output shaft hub. The outer side of the spherical sliding bearing is sleeved with a bearing seat in a sliding mode. Through the combination of the rolling bearing and the spherical sliding bearing, the coupling can be flexibly mounted, meanwhile, the force of the coupling, which is required to be borne by the bearing and the radial direction, can be reduced, and the service life of the coupling can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of propeller couplings, and particularly relates to a marine propeller coupling. Background Art

[0002] A marine propeller coupling is a device used to connect an electric motor and a propeller shaft, especially suitable for electric ships. This coupling combines the functions of an elastic coupling and a thrust bearing, aiming to compensate for installation eccentricity and dynamic displacement, while reducing vibration and noise. Specifically, it transmits the thrust of the propeller to the hull structure through the thrust bearing, and the design of the elastic coupling allows for a certain amount of offset and dynamic displacement, thereby protecting mechanical components from damage and improving the efficiency and reliability of the overall system. In addition, this coupling also adopts an oil-ring lubrication method to bring the lubricating oil in the oil sump to the shaft diameter surface to maintain lubrication and extend the service life.

[0003] The prior art has the following deficiencies: During the installation and use of the existing propeller coupling, the installation angle cannot be conveniently adjusted according to requirements, so that the coupling is easily subjected to axial or radial forces during use, which will then cause extrusion to the coupling, making it prone to damage, and further affecting the working state and service life of the coupling. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a marine propeller coupling, which enables the coupling to be flexibly installed through the combination of a rolling bearing and a spherical plain bearing, and at the same time can reduce the forces borne by the coupling from the bearing and radially, and can extend the service life of the coupling to solve the above deficiencies in the technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A marine propeller coupling includes a connection mechanism, and further includes:

[0006] A transmission mechanism is arranged at the connection position between the connection mechanism and the transmission shaft, and is used to reduce the forces from the axial and radial directions;

[0007] The transmission mechanism includes a power output shaft hub, a power output flange is fixedly sleeved on the outer side of one end of the power output shaft hub close to the connection mechanism, and fastening bolts are arranged between the power output shaft hub and the power output flange and are fixedly connected through the fastening bolts;

[0008] A spherical plain bearing is movably sleeved on the outer side of the end of the power output shaft hub far from the connection mechanism, a rolling bearing is arranged between the inner wall of the spherical plain bearing and the outer wall of the power output shaft hub, and a bearing housing is slidably sleeved on the outer side of the spherical plain bearing.

[0009] Preferably, the connecting mechanism includes an intermediate shaft hub, and high-elasticity bodies are movably sleeved on the outer sides of both ends of the intermediate shaft hub. A plurality of radial bolts are arranged between the inner walls of the two high-elasticity bodies and the intermediate shaft hub and are fixedly connected through the radial bolts.

[0010] Preferably, one end of the high-elasticity body at the left end is provided with a coupling flange. A first axial bolt is arranged between the coupling flange and the adjacent high-elasticity body and is fixedly connected through the first axial bolt. A plurality of second axial bolts are arranged between the high-elasticity body at the right end and the power output flange and are fixedly connected through the second axial bolts.

[0011] Preferably, a power input flange is arranged at one end of the coupling flange away from the adjacent high-elasticity body. A plurality of coupling bolts are arranged between the power input flange and the coupling flange and are fixedly connected through the coupling bolts.

[0012] Preferably, the transmission mechanism further includes six fixed sleeves, and the six fixed sleeves are respectively movably inserted into the inner walls of the top and bottom of the bearing seat. Axial damping elastic bodies are movably sleeved on the outer walls of both ends of the fixed sleeves located on the bearing seat.

[0013] Preferably, a fixed bolt is threadedly inserted into the inner wall of the fixed sleeve, and a baffle is arranged between the head part of the fixed bolt and the adjacent axial damping elastic body.

[0014] Preferably, the outer wall of one end of the power output shaft hub close to the power output flange is arranged in a conical structure, and an installation hole for connecting with the output shaft is opened in the inner wall of the power output shaft hub.

[0015] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0016] 1. Through the combination of the rolling bearing and the spherical sliding bearing, the coupling can be installed more flexibly, and at the same time, the coupling can better bear the forces from different directions. At the same time, through the arrangement of the axial damping elastic body, the impact force generated by the axial force on the connection position between the bearing seat and the ship can be avoided, so that the connection between the coupling and the ship will not become loose, and further, the coupling can remain stable during the working process, enabling the coupling to play a stable transmission role, and at the same time, the service life of the coupling can be extended, and thus the stable operation of the propeller can be ensured;

[0017] 2. Through the arrangement of the two high-elasticity bodies, the axial impact force can be better buffered, and further, the impact force generated during the operation of the engine and the propeller can be reduced, the stable operation of the coupling can be ensured, and the service life of the coupling can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0020] Figure 2 It is a front vertical sectional view of the present utility model.

[0021] Figure 3 It is an exploded three-dimensional structure diagram of the transmission mechanism of the present utility model.

[0022] Explanation of reference numerals:

[0023] 1. Connection mechanism; 101. Intermediate shaft hub; 102. High-elasticity body; 103. Radial bolt; 104. Coupling flange; 105. First axial bolt; 106. Power input flange; 107. Coupling bolt; 108. Second axial bolt;

[0024] 2. Transmission mechanism; 201. Power output shaft hub; 202. Power output flange; 203. Fastening bolt; 204. Rolling bearing; 205. Spherical sliding bearing; 206. Bearing seat; 207. Fixed sleeve; 208. Axial damping elastic body; 209. Fixed bolt; 210. Baffle. Specific embodiments

[0025] The present utility model provides a marine propeller coupling as Figure 1 shown, including a connection mechanism 1, and further including:

[0026] A transmission mechanism 2, arranged at the connection position between the connection mechanism 1 and the transmission shaft, for reducing the forces from the axial and radial directions.

[0027] In order to enable the coupling to be flexibly installed, as Figures 1-3As shown in the figure, the transmission mechanism 2 includes a power output shaft hub 201. A power output flange 202 is fixedly sleeved on the outer side of one end of the power output shaft hub 201 close to the connecting mechanism 1. A fastening bolt 203 is arranged between the power output shaft hub 201 and the power output flange 202 and they are fixedly connected through the fastening bolt 203. A spherical sliding bearing 205 is movably sleeved on the outer side of the end of the power output shaft hub 201 far from the connecting mechanism 1. A rolling bearing 204 is arranged between the inner wall of the spherical sliding bearing 205 and the outer wall of the power output shaft hub 201. The outer side of the spherical sliding bearing 205 is slidably sleeved with a bearing seat 206. The combination of the rolling bearing 204 and the spherical sliding bearing 205 enables the coupling to be flexibly installed, and at the same time enables it to withstand forces from different directions, which can ensure the stability of the coupling during operation and extend the service life of the coupling.

[0028] In order to enable the coupling to conveniently damp and buffer the axial force, as Figures 1-2 shown in the figure, the connecting mechanism 1 includes an intermediate shaft hub 101. High-elasticity bodies 102 are movably sleeved on the outer sides of both ends of the intermediate shaft hub 101. A plurality of radial bolts 103 are arranged between the inner walls of the two high-elasticity bodies 102 and the intermediate shaft hub 101 and they are fixedly connected through the radial bolts 103. A coupling flange 104 is arranged at one end of the left high-elasticity body 102. A first axial bolt 105 is arranged between the coupling flange 104 and the adjacent high-elasticity body 102 and they are fixedly connected through the first axial bolt 105. A plurality of second axial bolts 108 are arranged between the right high-elasticity body 102 and the power output flange 202 and they are fixedly connected through the second axial bolts 108. The arrangement of the two high-elasticity bodies 102 can conveniently damp and buffer the axial force, reduce the impact of the axial force on the coupling, and extend the service life of the coupling.

[0029] In order to enable the connecting mechanism 1 to be conveniently connected to the engine, as Figures 1-2 shown in the figure, a power input flange 106 is arranged at the end of the coupling flange 104 far from the adjacent high-elasticity body 102. A plurality of coupling bolts 107 are arranged between the power input flange 106 and the coupling flange 104 and they are fixedly connected through the coupling bolts 107. The power input flange 106 can be connected to the engine, so that the coupling can be conveniently connected to the engine and the propeller, and the coupling can stably play a transmission role.

[0030] In order to enable the coupling to reduce the axial force received during the installation process, as Figures 2-3As shown, the transmission mechanism 2 further includes six fixed sleeves 207. The six fixed sleeves 207 are respectively movably inserted into the inner walls of the top and bottom of the bearing seat 206. Axial damping elastomers 208 are movably sleeved on the outer walls of both ends of the fixed sleeve 207 located on the bearing seat 206. A fixing bolt 209 is threadedly inserted into the inner wall of the fixed sleeve 207. A baffle 210 is provided between the head part of the fixing bolt 209 and the adjacent axial damping elastomer 208. The arrangement of the two axial damping elastomers 208 can reduce the axial force received during the installation of the coupling, ensure the stability of the coupling installation process, and avoid loosening between the coupling and the ship.

[0031] To make the connection between the power output shaft hub 201 and the power output flange 202 more flexible, as Figures 2-3 shown, the outer wall of one end of the power output shaft hub 201 close to the power output flange 202 is provided with a conical structure. An installation hole connected to the output shaft is opened in the inner wall of the power output shaft hub 201. The conical outer wall makes the connection between the power output shaft hub 201 and the power output flange 202 more flexible, and the connection between the coupling and the output shaft is made tight through the connection between the installation hole and the output shaft.

[0032] When installing the coupling, two high-elasticity bodies 102 are respectively sleeved on the outer walls of both ends of the intermediate shaft hub 101. Then, radial bolts 103 can be used to connect and fix the high-elasticity bodies 102 and the intermediate shaft hub 101. Six fixing sleeves 207 can be respectively inserted into the top and bottom of the bearing housing 206. At the same time, two axial damping elastic bodies 208 are sleeved on the outer walls of both ends of the adjacent fixing sleeves 207. Then, fixing bolts 209 pass through the baffle 210 and the inner wall of the fixing sleeve 207 and are threadedly connected with the ship's thread, so that the bearing housing 206 is tightly connected to the ship's installation part. Then, the spherical sliding bearing 205 is sleeved on the outer side of one end of the power output shaft hub 201. Then, the rolling bearing 204 is sleeved on the outer side of the power output shaft hub 201 so that it is inside the spherical sliding bearing 205. Furthermore, the spherical sliding bearing 205 is inserted into the inner side of the bearing housing 206. Then, the power output flange 202 is sleeved on the outer side of the other end of the power output shaft hub 201. The fastening bolt 203 passes through the inner wall of the power output flange 202 and is threadedly connected with the inner wall of the power output shaft hub 201. Then, the second axial bolt 108 passes through the inner wall of the high-elasticity body 102 at the right end and is threadedly connected with the inner wall of the power output flange 202. Then, the coupling flange 104 is connected to the high-elasticity body 102 at the left end. The first axial bolt 105 is used to connect and fix the coupling flange 104 and the adjacent high-elasticity body 102. Then, the coupling bolt 107 is used to connect the power input flange 106 and the coupling flange 104. Furthermore, the power input flange 106 is connected to the engine. At the same time, the inner wall of the power output shaft hub 201 is connected to the output shaft. Thus, the coupling can be connected to the engine and the propeller;

[0033] The axial force generated by the engine during operation can be reduced by the damping and buffering of the two high-elasticity bodies 102, and the influence of the axial force on the coupling can be reduced. At the same time, the combination of the rolling bearing 204 and the spherical sliding bearing 205 enables the coupling to withstand impact forces in different directions, enabling the coupling to stably play a transmission role. At the same time, the setting of multiple axial damping elastic bodies 208 can reduce the impact of the axial force on the connection position between the coupling and the ship, ensuring the stable installation of the coupling, and thus extending the service life of the coupling. This embodiment specifically solves the problems in the prior art that the coupling cannot be flexibly installed, is prone to looseness due to the influence of axial or radial impact forces, and will affect the service life of the coupling.

[0034] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the claims of the present invention.

Claims

1. A marine propeller coupling, comprising a connecting mechanism (1), characterized in that, It further includes: A transmission mechanism (2), which is arranged at the connection position between the connection mechanism (1) and the transmission shaft, and is used to reduce the forces from the axial and radial directions; The transmission mechanism (2) includes a power output shaft hub (201). A power output flange (202) is fixedly sleeved on the outer side of one end of the power output shaft hub (201) close to the connection mechanism (1). A fastening bolt (203) is arranged between the power output shaft hub (201) and the power output flange (202), and they are fixedly connected through the fastening bolt (203); A spherical sliding bearing (205) is movably sleeved on the outer side of one end of the power output shaft hub (201) away from the connection mechanism (1). A rolling bearing (204) is arranged between the inner wall of the spherical sliding bearing (205) and the outer wall of the power output shaft hub (201). The outer side of the spherical sliding bearing (205) is slidably sleeved with a bearing seat (206).

2. The marine propeller coupling according to claim 1, wherein: The connection mechanism (1) includes an intermediate shaft hub (101). Highly elastic bodies (102) are movably sleeved on the outer sides of both ends of the intermediate shaft hub (101). A plurality of radial bolts (103) are arranged between the inner walls of the two highly elastic bodies (102) and the intermediate shaft hub (101), and they are fixedly connected through the radial bolts (103).

3. The marine propeller coupling according to claim 2, characterized in that: One end of the highly elastic body (102) at the left end is provided with a coupling flange (104). A first axial bolt (105) is arranged between the coupling flange (104) and the adjacent highly elastic body (102), and they are fixedly connected through the first axial bolt (105). A plurality of second axial bolts (108) are arranged between the highly elastic body (102) at the right end and the power output flange (202), and they are fixedly connected through the second axial bolts (108).

4. The marine propeller coupling according to claim 3, wherein: A power input flange (106) is arranged at one end of the coupling flange (104) away from the adjacent highly elastic body (102). A plurality of coupling bolts (107) are arranged between the power input flange (106) and the coupling flange (104), and they are fixedly connected through the coupling bolts (107).

5. A marine propeller coupling according to claim 1, characterized in that: The transmission mechanism (2) further includes six fixed sleeves (207). The six fixed sleeves (207) are respectively movably inserted into the inner walls of the top and bottom of the bearing seat (206). Axial damping elastic bodies (208) are movably sleeved on the outer walls of both ends of the fixed sleeves (207) located at the bearing seat (206).

6. The marine propeller coupling according to claim 5, characterized in that: A fixed bolt (209) is threadedly inserted into the inner wall of the fixed sleeve (207). A baffle (210) is arranged between the head part of the fixed bolt (209) and the adjacent axial damping elastic body (208).

7. A marine propeller coupling according to claim 1, characterized in that: The outer wall of one end of the power output shaft hub (201) close to the power output flange (202) is arranged in a conical structure. An installation hole for connecting with the output shaft is opened in the inner wall of the power output shaft hub (201).

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