A ship shafting vibration suppression device

Abstract

The application discloses a kind of ship shafting vibration suppression device, including shafting body, bearing damping mechanism and motor damping mechanism, the shafting body includes motor, propeller, shaft and intermediate bearing;The bearing damping mechanism includes inner ring, outer ring and several damping members;The motor damping mechanism includes base and shock absorber.The beneficial effects of ship shafting vibration suppression device provided by the application are: the shock absorber is used to damp the motor, so as to offset the vibration force generated by the motor, thereby inhibiting the vibration generated by the motor on the shaft and the intermediate bearing;At the same time, the vibration of the intermediate bearing is inhibited by the damping member, so that the vibration generated by the motor operation and the vibration of the shaft can be inhibited simultaneously by the device, the vibration generated by the propulsion shaft of the ship during operation can be reduced, the transmission of vibration to other parts of the ship can be reduced, and the stability and safety of the overall operation of the ship can be improved.

Description

Technical Field

[0001] This invention relates to the field of bearing technology, and more specifically to a vibration suppression device for ship shafting. Background Technology

[0002] With the rapid development of the modern shipbuilding industry, the size and performance of ships are constantly improving to meet the ever-increasing shipping demands. However, this development is also accompanied by a series of technical challenges, the most significant of which is the vibration problem of ship shafting. In particular, as ships develop towards larger and faster sizes, the significant increase in main engine power leads to a substantial increase in the torque and thrust that the propulsion shafting needs to transmit, resulting in a significant increase in propeller excitation force.

[0003] Against this backdrop, the length and span of the propulsion shafting have also increased, which not only increases the complexity and weight of the shafting but also leads to a significant decrease in the natural frequency of the shafting's lateral vibration. When the propeller blade frequency approaches the resonant speed range of the shafting's lateral vibration, resonance is easily triggered, leading to intensified bearing vibration. This vibration not only affects the normal operation of the ship but also transmits to the hull through multi-support structures, thereby inducing low-frequency sound radiation, which adversely affects the working environment of the crew and the ship's stealth capabilities. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a ship shafting vibration suppression device to solve the technical problem that the propulsion shafting of ships vibrates greatly, which is transmitted to the hull and induces low-frequency sound radiation, thus adversely affecting the working environment of the crew and the concealment of the ship.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This invention provides a ship shafting vibration suppression device, comprising:

[0007] The shaft system body includes a motor, a propeller, a shaft, and an intermediate bearing. The output shaft of the motor is fixedly connected to the propeller via the shaft, and the inner ring of the intermediate bearing is fixedly sleeved on the middle part of the shaft.

[0008] A bearing damping mechanism, comprising an inner ring, an outer ring, and a plurality of damping components, wherein the inner ring is sleeved around the intermediate bearing, the outer ring is coaxially disposed outside the inner ring, one end of each damping component is uniformly fixed to the inner ring circumferentially, and the other end of each damping component is fixed to the outer ring; and...

[0009] A motor vibration damping mechanism, comprising a base and a damping component, wherein one end of the damping component is connected to the base and the other end of the damping component is connected to the motor.

[0010] In some embodiments, one end of the shaft is connected to the output shaft of the motor via a first coupling, and the other end of the shaft is connected to the propeller via a second coupling.

[0011] In some embodiments, the inner ring includes two inner semicircular rings, which are respectively fitted on both sides of the outer ring of the intermediate bearing. An arc-shaped groove is formed on the inner wall of each of the two inner semicircular rings, and a plurality of rollers are rotatably connected in the arc-shaped grooves. The outer surface of each roller abuts against the outer wall of the intermediate bearing.

[0012] In some embodiments, the outer ring includes two outer semicircular rings, which are coaxially disposed outside the two inner semicircular rings, and each outer semicircular ring is distributed on one side of the intermediate bearing along with the corresponding inner semicircular ring. The two ends of the damping member are respectively connected to the inner semicircular ring and the corresponding outer semicircular ring.

[0013] In some embodiments, the damping element includes a sleeve, a piston block, a piston rod, a stop block, and a first damping spring. One end of the sleeve is fixed to the inner semi-circular ring, the piston block is slidably disposed inside the sleeve, one end of the piston rod is fixedly connected to the piston block, the other end of the piston rod is fixedly connected to the stop block, the stop block is fixedly connected to the corresponding outer semi-circular ring, the first damping spring is sleeved on the piston rod, one end of the first damping spring abuts against the sleeve, and the other end of the first damping spring abuts against the stop block.

[0014] In some embodiments, one end of the two outer semicircular rings is hinged by a hinge, and the other end of the two outer semicircular rings is provided with a locking screw hole. The bearing damping mechanism also includes a locking screw, which is threadedly connected to the locking screw holes of the two outer semicircular rings.

[0015] In some embodiments, the bearing damping mechanism further includes a bearing housing, which is fixedly connected to one of the outer semicircular rings, and a handle is hinged to the other outer semicircular ring. The handle has a slot for locking the locking screw.

[0016] In some embodiments, the damping component includes a mounting block, a second damping spring, and two side limiting components. One end of the mounting block is fixedly connected to the housing of the motor, one end of the second damping spring is fixedly connected to the other end of the mounting block, and the other end of the second damping spring is fixedly connected to the base. The two side limiting components are respectively disposed on both sides of the mounting block and are used to laterally limit the mounting block.

[0017] In some embodiments, the base is provided with two sliding grooves located on both sides of the mounting block;

[0018] Both of the aforementioned side limiting components include two fixed vertical plates, two support rods, two sliding rods, a connecting rod, a vertical rod, and a slider. Both fixed vertical plates are fixed to the base. Each fixed vertical plate has a guide hole extending horizontally. One end of each support rod is hinged to one side of the mounting block, and the other end of each support rod is hinged to one end of each sliding rod. The two sliding rods are slidably disposed within the guide holes of the two fixed vertical plates. Both ends of the connecting rod are fixedly connected to the other ends of each sliding rod. One end of the vertical rod is fixed to the connecting rod, and the other end of the vertical rod is fixedly connected to the slider. The slider is slidably disposed within the corresponding groove.

[0019] In some embodiments, both of the side limiting components further include an optical axis, the two ends of which are respectively fixed to one end of the two slide rods, and the other ends of the two support rods are hinged to the optical axis.

[0020] Compared with the prior art, the beneficial effects of the ship shafting vibration suppression device provided by the present invention are as follows: When the motor vibrates during operation, the damping components reduce the vibration of the motor, thereby offsetting the vibration force generated by the motor and suppressing the vibration of the motor on the shaft and intermediate bearing; at the same time, when the intermediate bearing is vibrated by other factors, the vibration force is transmitted to the inner ring and then to each damping component, thereby suppressing the vibration of the intermediate bearing through the damping components. Thus, this device can suppress the vibration generated by the motor operation and the vibration of the shaft simultaneously, reducing the vibration generated by the ship's propulsion shafting during operation, reducing the transmission of vibration to other parts of the ship, and improving the overall stability and safety of the ship's operation. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a ship shafting vibration suppression device provided in an embodiment of the present invention;

[0022] Figure 2 yes Figure 1 A three-dimensional structural diagram of a ship shafting vibration suppression device from another perspective;

[0023] Figure 3 yes Figure 1 A three-dimensional structural diagram of the main shaft system in the diagram;

[0024] Figure 4 yes Figure 1 A three-dimensional structural diagram of the bearing damping mechanism in the image;

[0025] Figure 5 yes Figure 4 A three-dimensional structural diagram omitting the shaft and intermediate bearing;

[0026] Figure 6 yes Figure 5 Exploded view of the inner ring;

[0027] Figure 7 yes Figure 5 A three-dimensional structural diagram of a damping component;

[0028] Figure 8 yes Figure 4 Exploded view of the locking screw and handle;

[0029] Figure 9 yes Figure 1 A three-dimensional structural diagram of the motor vibration damping mechanism in the image;

[0030] Figure 10 yes Figure 9 A magnified view of a portion of region A in the middle;

[0031] Explanation of reference numerals in the attached drawings: 1-Shaft body, 11-Motor, 12-Propeller, 13-Shaft, 14-Intermediate bearing, 15-First coupling, 16-Second coupling, 2-Bearing damping mechanism, 21-Inner ring, 211-Inner semi-circular ring, 2111-Arc groove, 2112-Roller, 22-Outer ring, 221-Outer semi-circular ring, 2211-Locking screw hole, 222-Hinge, 223-Locking screw, 224-Handle, 2241-Slot, 23-Resistant 231-Sleeve, 232-Piston rod, 233-Stop block, 234-First damping spring, 24-Bearing seat, 3-Motor damping mechanism, 31-Base, 311-Slide groove, 32-Damping component, 321-Mounting block, 322-Second damping spring, 323-Side limiting assembly, 3231-Fixed vertical plate, 3232-Support rod, 3233-Slide rod, 3234-Connecting rod, 3235-Vertical rod, 3236-Slider, 3237-Optical axis. Detailed Implementation

[0032] 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.

[0033] To address the technical problem of significant vibration in ship propulsion shafting that is transmitted to the hull and induces low-frequency sound radiation, adversely affecting the working environment of crew members and the ship's concealment, this invention provides a ship shafting vibration suppression device. This device reduces the vibration generated by the ship's propulsion shafting during operation, minimizes the transmission of vibration to other parts of the ship, and improves the overall stability and safety of the ship's operation.

[0034] It should be noted that the ship shafting vibration suppression device described in this invention is used for, but not limited to, ship propulsion shafting. For ease of explanation, this invention will only use the application of the ship shafting vibration suppression device to ship propulsion shafting equipment as an example. The principle of the ship shafting vibration suppression device applied to other types of equipment is essentially the same as that applied to ship propulsion shafting equipment, and will not be described in detail here.

[0035] Please see Figure 1 , Figure 1 This is a three-dimensional structural diagram of a ship shafting vibration suppression device according to an embodiment of the present invention. The ship shafting vibration suppression device includes a shafting body 1, a bearing damping mechanism 2, and a motor damping mechanism 3.

[0036] Please see Figures 1-3 The shaft system body 1 includes a motor 11, a propeller 12, a shaft 13 and an intermediate bearing 14. The output shaft of the motor 11 is fixedly connected to the propeller 12 via the shaft 13, and the inner ring of the intermediate bearing 14 is fixedly sleeved on the middle part of the shaft 13.

[0037] The bearing damping mechanism 2 includes an inner ring 21, an outer ring 22, and several damping elements 23. The inner ring 21 is sleeved on the outside of the intermediate bearing 14, and the outer ring 22 is coaxially disposed outside the inner ring 21. One end of each damping element 23 is uniformly fixed to the inner ring 21 along the circumference, and the other end of each damping element 23 is fixed to the outer ring 22.

[0038] The motor damping mechanism 3 includes a base 31 and a damping component 32. One end of the damping component 32 is connected to the base 31, and the other end of the damping component 32 is connected to the motor 11.

[0039] In use, when the motor 11 vibrates during operation, the damping element 32 reduces the vibration of the motor 11, thereby offsetting the vibration force generated by the motor 11 and suppressing the vibration of the motor 11 on the shaft 13 and the intermediate bearing 14. At the same time, when the intermediate bearing 14 vibrates due to other factors, the vibration force is transmitted to the inner ring 21 and then to each damping element 23. The damping element 23 suppresses the vibration of the intermediate bearing 14. Thus, this device can suppress the vibration generated by the operation of the motor 11 and the vibration of the shaft 13 at the same time, which can reduce the vibration generated by the propulsion shaft system of the ship during operation, reduce the transmission of vibration to other parts of the ship, and improve the overall stability and safety of the ship's operation.

[0040] In one embodiment, please refer to Figures 1-3 One end of the shaft 13 is connected to the output shaft of the motor 11 via a first coupling 15, and the other end of the shaft 13 is connected to the propeller 12 via a second coupling 16.

[0041] In one embodiment, please refer to Figures 4-6 The inner ring 21 includes two inner semi-circular rings 211, which are respectively sleeved on both sides of the outer ring of the intermediate bearing 14. The inner walls of the two inner semi-circular rings 2111 are provided with arc-shaped grooves 2111, and a plurality of rollers 2112 are rotatably connected in the arc-shaped grooves 2111. The outer surface of each roller 2112 abuts against the outer wall of the intermediate bearing 14, thereby reducing the friction between the rollers 2112 and the outer wall of the intermediate bearing 14.

[0042] In one embodiment, please refer to Figures 4-6 The outer ring 22 includes two outer semicircular rings 221, which are coaxially arranged outside the two inner semicircular rings 211. Each outer semicircular ring 221 is distributed on one side of the intermediate bearing 14 along with the corresponding inner semicircular ring 211. The two ends of the damping member 23 are connected to the inner semicircular ring 211 and the corresponding outer semicircular ring 221, respectively.

[0043] In one embodiment, please refer to Figures 4-7The damping component 23 includes a sleeve 231, a piston block, a piston rod 232, a stop block 233, and a first damping spring 234. One end of the sleeve 231 is fixed to the inner semi-circular ring 211. The piston block is slidably disposed inside the sleeve 231. One end of the piston rod 232 is fixedly connected to the piston block, and the other end of the piston rod 232 is fixedly connected to the stop block 233. The stop block 233 is fixedly connected to the corresponding outer semi-circular ring 221. The first damping spring 234 is sleeved on the piston rod 232. One end of the first damping spring 234 abuts against the sleeve 231, and the other end of the first damping spring 234 abuts against the stop block 233. When the intermediate bearing 14 vibrates during use, the vibration force is transmitted to the two inner semi-circular rings 211 and then to each sleeve 231, causing the piston block to move within the sleeve 231. This dissipates the vibration energy through friction. At the same time, the length of the first damping spring 234 will extend or retract, which can buffer the vibration and reduce the vibration intensity.

[0044] In one embodiment, please refer to Figure 4 , Figure 5 and Figure 8 One end of each of the two outer semi-circular rings 221 is hinged by a hinge 222, and the other end of each of the two outer semi-circular rings 221 has a locking screw hole 2211. The bearing damping mechanism 2 also includes a locking screw 223, which is threadedly connected to the locking screw holes 2211 of the two outer semi-circular rings 221. In use, the two outer semi-circular rings 221 can be locked by the locking screw 223, thereby facilitating the disassembly of the outer semi-circular rings 221 and the inner semi-circular ring 211, and thus making it easier to inspect or replace the intermediate bearing 14.

[0045] In one embodiment, please refer to Figure 4 , Figure 5 and Figure 8 The bearing damping mechanism 2 further includes a bearing seat 24, which is fixedly connected to one of the outer semi-circular rings 221. A handle 224 is hinged to the other outer semi-circular ring 221. The handle 224 has a slot 2241 for locking the locking screw 223. When it is necessary to inspect and replace the intermediate bearing 14, first, the handle 224 is moved to reduce the pulling force on the locking screw 223. Then, the locking screw 223 is rotated to disengage from the locking screw hole 2211. Next, one outer semi-circular ring 221 is pulled upwards, causing it to rotate around the hinge 222. This causes the outer semi-circular ring 221 to rotate via a damping device, allowing the intermediate bearing 14 to be inspected or replaced.

[0046] In some embodiments, please refer to Figure 1 , Figure 9 and Figure 10 The damping component 32 includes a mounting block 321, a second damping spring 322, and two side limiting components 323. One end of the mounting block 321 is fixedly connected to the housing of the motor 11. One end of the second damping spring 322 is fixedly connected to the other end of the mounting block 321, and the other end of the second damping spring 322 is fixedly connected to the base 31. The two side limiting components 323 are respectively disposed on both sides of the mounting block 321 and are used to laterally limit the mounting block 321. In this embodiment, the second damping spring 322 can buffer the vibration of the motor 11, and the two side limiting components 323 can limit the vibration amplitude of the motor 11.

[0047] In some embodiments, please refer to Figure 1 , Figure 9 and Figure 10 The base 31 has two sliding grooves 311 located on both sides of the mounting block 321. Each of the two side limiting components 323 includes two fixed vertical plates 3231, two support rods 3232, two sliding rods 3233, a connecting rod 3234, a vertical rod 3235, and a slider 3236. The two fixed vertical plates 3231 are fixed to the base 31. Each fixed vertical plate 3231 has a guide hole extending horizontally. One end of each support rod 3232 is hinged to one side of the mounting block 321, and the other end of each support rod 3232 is hinged to one end of each sliding rod 3233. The two sliding rods 3233 are slidably disposed within the guide holes of the two fixed vertical plates 3231. Both ends of the connecting rod 3234 are fixedly connected to the other ends of each sliding rod 3233. One end of the vertical rod 3235 is fixed to the connecting rod 3236. 34. The other end of the vertical rod 3235 is fixedly connected to the slider 3236. The slider 3236 is slidably disposed in the corresponding groove 311. In use, when the motor 11 operates and vibrates, the vibration is transmitted to the mounting block 321. When the mounting block 321 vibrates, it will squeeze the second damping spring 322, thereby offsetting part of the vibration force. The other part of the vibration force is transmitted to the two support rods 3232 on both sides. The two support rods 3232 drive the slider 3233 to move horizontally. The slider 3233 drives the connecting rod 3234, the vertical rod 3235 and the slider 3236 to move back and forth horizontally, thereby causing the slider 3236 to move back and forth in the groove 311. When the slider 3236 abuts against the inner wall of the groove 311, it will be blocked and unable to continue moving. Thus, the movement amplitude of the slider 3236 can be limited by the groove 311, thereby limiting the vibration amplitude of the motor 11 and achieving the purpose of shock absorption.

[0048] In some embodiments, please refer to Figure 1 , Figure 9 and Figure 10 Both of the side limiting components 323 further include an optical axis 3237, the two ends of which are respectively fixed to one end of the two slide rods 3233, and the other ends of the two support rods 3232 are hinged to the optical axis 3237.

[0049] To better understand this invention, the following is combined with... Figures 1 to 10 The technical solution of the present invention is described in detail as follows: During use, when the intermediate bearing 14 vibrates, the vibration force is transmitted to the two inner semi-circular rings 211, and then to each sleeve 231, causing the piston block to move within the sleeve 231. This dissipates the vibration energy through friction. Simultaneously, the length of the first damping spring 234 expands and contracts, buffering the vibration and reducing its intensity. Furthermore, when the motor 11 vibrates, the vibration is transmitted to the mounting block 321. The vibration of the mounting block 321 compresses the second damping spring 322, thereby counteracting the vibration. Part of the vibration force is transmitted to the two support rods 3232 on both sides. The two support rods 3232 drive the slide rod 3233 to move horizontally. The slide rod 3233 drives the connecting rod 3234, the vertical rod 3235 and the slider 3236 to move back and forth horizontally, so that the slider 3236 moves back and forth in the slide groove 311. When the slider 3236 abuts against the inner wall of the slide groove 311, it will be blocked and cannot continue to move. Thus, the movement amplitude of the slider 3236 can be limited by the slide groove 311, thereby limiting the vibration amplitude of the motor 11 and achieving the purpose of shock absorption.

[0050] The beneficial effects of the technical solution provided by this invention include:

[0051] (1) By setting the bearing damping mechanism 2, combined with the internal roller design, the vibration generated by the intermediate bearing 14 during operation is effectively dispersed and reduced, significantly reducing the transmission of vibration to other parts of the ship, and improving the overall stability and safety of operation.

[0052] (2) The inner ring 21 is split into two inner semi-circular rings 211, and the outer ring 22 is split into two outer semi-circular rings 221. The two outer semi-circular rings 221 are detachably connected by locking screw 223, which makes the replacement and maintenance of the intermediate bearing 14 convenient and quick, reduces downtime and improves work efficiency.

[0053] (3) The use of damping element 23 further enhances the suppression of vibration of intermediate bearing 14. Through the elasticity characteristics of the first damping spring 234, vibration energy is effectively absorbed and consumed, making the operation of intermediate bearing 14 more stable;

[0054] (4) The design of the damping component 32 not only effectively reduces the vibration generated by the motor 11 during operation, but also enhances the stability of the structure through the cooperation of the slider 3236 and the groove 311, preventing displacement and damage caused by vibration.

[0055] (5) Improved operating efficiency: By comprehensively applying a variety of vibration reduction and damping technologies, this device significantly reduces the vibration and noise of the ship shaft system during operation, improves the operating efficiency and reliability of the system, and extends the service life of the equipment.

[0056] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A ship shafting vibration suppression device, characterized by, The utility model relates to a kind of motor damping mechanism and bearing damping mechanism, including: Shafting main body, including motor, propeller, shaft and intermediate bearing, the output shaft of the motor is fixedly connected with the propeller via the shaft, the inner ring of the intermediate bearing is fixedly sleeved in the middle part of the shaft; Bearing damping mechanism, including inner ring, outer ring and several damping pieces, the inner ring is sleeved outside the intermediate bearing, the outer ring is coaxially arranged outside the inner ring, one end of each damping piece is fixed to the inner ring along the circumference, the other end of each damping piece is fixed to the outer ring, the inner ring includes two inner semicircular rings, two inner semicircular rings are respectively sleeved on the both sides of the outer ring of the intermediate bearing, the outer ring includes two outer semicircular rings, two outer semicircular rings are coaxially arranged outside two inner semicircular rings respectively;And, Motor damping mechanism, including base and shock absorber, one end of the shock absorber is connected to the base, the other end of the shock absorber is connected to the motor; The damping piece includes sleeve, piston block, piston rod, stop block and first damping spring, one end of the sleeve is fixed to the inner semicircular ring, the piston block is slidingly arranged in the sleeve, one end of the piston rod is fixedly connected with the piston block, the other end of the piston rod is fixedly connected with the stop block, the stop block is fixedly connected with the corresponding outer semicircular ring, the first damping spring is sleeved on the piston rod, one end of the first damping spring is in abutment with the sleeve, the other end of the first damping spring is in abutment with the stop block; The shock absorber includes mounting block, second damping spring and two side limiting components, one end of the mounting block is fixedly connected with the shell of the motor, one end of the second damping spring is fixedly connected with the other end of the mounting block, the other end of the second damping spring is fixedly connected with the base, two side limiting components are respectively arranged on the two sides of the mounting block and are used for laterally limiting the mounting block; Two sliding grooves are formed in the base and located on the two sides of the mounting block respectively; Two side limiting components each include two fixed vertical plates, two supporting rods, two sliding rods, a connecting rod, a vertical rod and a sliding block, the two fixed vertical plates are fixed on the base, guide holes extending in the horizontal direction are formed in the two fixed vertical plates, one end of the two supporting rods is hingedly connected to one side of the mounting block, the other end of the two supporting rods is hingedly connected with one end of the two sliding rods respectively, the two sliding rods are slidingly arranged in the guide holes of the two fixed vertical plates respectively, the two ends of the connecting rod are fixedly connected with the other ends of the two sliding rods respectively, one end of the vertical rod is fixed to the connecting rod, the other end of the vertical rod is fixedly connected with the sliding block, and the sliding block is slidingly arranged in the corresponding sliding groove.

2. The ship shafting vibration damping device according to claim 1, characterized by One end of the shaft is connected with the output shaft of the motor via a first shaft coupling, and the other end of the shaft is connected with the propeller via a second shaft coupling.

3. The ship shafting vibration damping device according to claim 1, characterized by Arc-shaped grooves are formed in the inner walls of the two inner semicircular rings, and a plurality of rollers are rotatably connected in the arc-shaped grooves, and the outer surfaces of the rollers are in abutment with the outer wall of the intermediate bearing.

4. The ship shafting vibration damping device according to claim 3, characterized by Each outer semicircle ring is distributed on one side of the intermediate bearing with a corresponding inner semicircle ring, and two ends of the damping member are connected with the inner semicircle ring and the corresponding outer semicircle ring respectively.

5. The ship shafting vibration damping device according to claim 4, characterized in that One end of each of the two outer semicircle rings is hinged via a hinge, and the other end of each of the two outer semicircle rings is provided with a locking screw hole, the bearing damping mechanism further comprises locking screws, and the locking screws are threadedly connected with the locking screw holes of the two outer semicircle rings.

6. The ship shafting vibration damping device according to claim 5, characterized by The bearing damping mechanism further comprises a bearing seat, the bearing seat is fixedly connected with one of the outer semicircle rings, the other outer semicircle ring is hinged with a handle, the handle is provided with a clamping groove, and the clamping groove is used for clamping the locking screw.

7. The ship shafting vibration damping device according to claim 1, characterized by Each of the two side limiting assemblies further comprises an optical shaft, two ends of the optical shaft are fixed to one end of each of the two slide rods, and the other end of each of the two supporting rods is hinged with the optical shaft.

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