Ship output shaft intermediate bearing displacement monitoring device and ship

Abstract

The invention discloses a ship output shaft intermediate bearing displacement monitoring device and a ship, and relates to the technical field of ship testing, the ship output shaft intermediate bearing displacement monitoring device comprises a reference measurement assembly, an in-situ measurement assembly and a data acquisition and processing assembly, the reference measurement assembly comprises a main sensor and a main emitter; the in-situ measurement assembly comprises an auxiliary sensor, a receiver and an auxiliary transmitter, the auxiliary sensor and the main sensor are both used for measuring ship angles of corresponding positions, and the receiver is used for receiving infrared rays emitted by the main transmitter. The data acquisition and processing assembly is connected with the reference measurement assembly and the in-situ measurement assembly. A plurality of in-situ measurement assemblies can be installed on a plurality of intermediate bearings one by one, the reference measurement assembly is installed close to an output shaft, the deviation angle of the intermediate bearings can be obtained through the angle difference measured by adjacent sensors, and the deformation offset can be measured through the infrared offset transmitted and received by adjacent transmitters and receivers.

Description

Technical Field

[0001] The invention relates to the technical field of ship testing, and in particular to a device for monitoring displacement of an intermediate bearing of a ship output shaft and a ship. Background Art

[0002] As ships get larger, their propulsion shafts get longer and longer, and the number of intermediate bearings on ships is increasing. During navigation, ships are affected by environmental factors such as wind, waves, and surges, as well as different ballast and cargo conditions, and the hull will deform to varying degrees. Since the intermediate bearings are fixedly installed on the hull, they will also shift as the hull deforms. The displacement of the intermediate bearing mainly includes displacement and rotation angle in the ship width direction and ship height direction.

[0003] On general ships, due to the short length of the propulsion shaft system, the displacement of the intermediate bearing caused by the deformation of the hull is very small and the impact can be ignored. However, for ships with ultra-long propulsion shaft systems, the displacement of the intermediate bearing will have a greater impact on the shaft system deflection and the distribution and size of the oil film force of the intermediate bearing. Under certain speeds and more intense ship maneuvers, it will cause severe wear of the intermediate bearing, thereby damaging the entire propulsion shaft system and affecting the operation and safety of the ship.

[0004] However, existing ship monitoring devices can only measure the deformation of the propulsion shaft system in real time. Since the displacement of the intermediate bearing is caused by the deformation of the hull, the ship monitoring device cannot measure the displacement parameters of the intermediate bearing based on the hull, and cannot provide data reference for ship operation. The intermediate bearing is easily damaged. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and propose a ship output shaft intermediate bearing displacement monitoring device and a ship, so as to solve the technical problems that the ship monitoring device in the prior art cannot measure the displacement parameters of the intermediate bearing based on the hull, cannot provide data reference for ship operation, and the intermediate bearing is easily damaged.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: The present invention provides a displacement monitoring device for an intermediate bearing of a ship output shaft, wherein the output shaft is connected to a drive motor and driven to rotate by the drive motor, and an intermediate bearing is sleeved on the output shaft. The displacement monitoring device comprises: A reference measurement assembly is disposed near the output shaft, the reference measurement assembly comprising a main sensor and a main transmitter; an on-site measurement assembly, arranged at the intermediate bearing, comprising a secondary sensor, a receiver and a secondary transmitter, wherein the secondary sensor and the main sensor are used to measure the angle of the ship at their respective corresponding positions, the receiver and the main transmitter are arranged along the axial direction of the output shaft, and the receiver is used to receive infrared rays emitted by the main transmitter; and The data acquisition and processing component is connected to the reference measurement component and the on-site measurement component, and is used to calculate the difference in ship angles measured by the main sensor and the auxiliary sensor, and to calculate the difference in displacement between the main transmitter and the auxiliary transmitter.

[0007] In some embodiments, the reference measurement assembly also includes a first box body and a first flange arranged on the left and right sides of the first box body, the first box body is provided with a first light outlet, the main sensor and the main transmitter are both arranged inside the first box body, and the transmitting end of the main transmitter is arranged at the first light outlet.

[0008] In some embodiments, the on-site measurement component also includes a second box body and a second flange arranged on the left and right sides of the second box body, the second box body is provided with a second light outlet and a third light outlet that are relatively arranged, the sub-sensor, the receiver and the sub-transmitter are all arranged inside the second box body, the receiving end of the receiver is arranged at the second light outlet, and the transmitting end of the sub-transmitter is arranged at the third light outlet.

[0009] In some embodiments, the on-site measurement component also includes a first motor, a bracket and a rotating drum arranged inside the second box body, the bracket is connected to the rotating drum, the receiver and the sub-transmitter are arranged at both ends of the rotating drum, and the first motor is rotationally connected to the bracket and can drive the bracket to rotate along the first direction so that the receiving end of the receiver is aligned with the second light outlet, and the transmitting end of the sub-transmitter is aligned with the third light outlet.

[0010] In some embodiments, the on-site measurement assembly further includes a second motor disposed on the bracket, the bracket being rotatably connected to the rotating drum, the second motor being connected to the rotating drum and capable of driving the rotating drum to rotate along a second direction, and the second direction is perpendicular to the first direction.

[0011] In some embodiments, the on-site measurement component further includes a controller, the controller is disposed at the bottom of the second box, the first motor is disposed at the controller, and the controller is connected to the first motor, the second motor, the receiver and the sub-transmitter.

[0012] In some embodiments, the receiver is a CCD four-quadrant photodetector.

[0013] In some embodiments, the data acquisition and processing component includes a data collector, a processor and a display, the data collector is connected to the reference measurement component and the on-site measurement component, and the processor is connected to the data collector and the display.

[0014] The present invention also discloses a ship, comprising a hull, a drive motor, an output shaft, a plurality of intermediate bearings and the above-mentioned ship output shaft intermediate bearing displacement monitoring device, wherein the output shaft is arranged along the length direction of the hull, and the plurality of intermediate bearings are arranged at intervals along the length extension direction of the output shaft. The number of the on-site measurement components is multiple, and the plurality of on-site measurement components are correspondingly arranged on the plurality of intermediate bearings. The drive motor is connected to the output shaft and is used to drive the output shaft to rotate, and the reference measurement component is arranged close to the output shaft.

[0015] In some embodiments, the ship further comprises a cabin wall, the output shaft passes through the cabin wall, and the in-situ measurement components are disposed on opposite sides of the cabin wall.

[0016] Compared with the prior art, the displacement monitoring device for the intermediate bearing of the output shaft of a ship provided by the present invention can be used for installation on a ship. The reference measurement component is arranged close to the output shaft, and multiple on-site measurement components can be installed one by one on multiple intermediate bearings, and the reference measurement component and multiple on-site measurement components are installed as close to the same straight line as possible, so that the infrared rays emitted by the main transmitter of the reference measurement component can be received by the receiver of the on-site measurement component, and the infrared rays emitted by the auxiliary transmitter can be received by the receiver of the next on-site measurement component, so as to form a line of signal conduction. When the intermediate bearing is displaced, the offset angle can be obtained by the angle difference measured by the adjacent sensors, and the deformation offset can be measured by the infrared offset sent and received by the adjacent transmitters and receivers. The obtained intermediate bearing offset angle and offset can provide data reference for ship operation, and a reasonable ship operation plan can be set in advance to avoid easy damage to the intermediate bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a device for monitoring displacement of an intermediate bearing of a ship output shaft provided by an embodiment of the present invention; Figure 2 1 is a schematic diagram of the application principle of the device for monitoring displacement of the intermediate bearing of the output shaft of a ship provided by an embodiment of the present invention; Figure 3 is a schematic diagram of the structure of a reference measurement component provided by an embodiment of the present invention; Figure 4 It is a structural schematic diagram of an on-site measurement component provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] In order to solve the technical problems in the prior art that the ship monitoring device cannot measure the displacement parameters of the intermediate bearing based on the hull, cannot provide data reference for ship operation, and the intermediate bearing is easily damaged, the present invention provides a ship output shaft intermediate bearing displacement monitoring device, which can realize the measurement of the offset angle and offset amount of the intermediate bearing on the ship output shaft, provide data reference for ship operation, and set a reasonable ship operation plan in advance to protect the intermediate bearing.

[0020] It should be noted that the ship output shaft intermediate bearing displacement monitoring device described in the present invention is used for but not limited to ships, etc. For the convenience of explanation, in the present invention, only the ship output shaft intermediate bearing displacement monitoring device is applied to ships as an example for explanation, and the principle of applying the ship output shaft intermediate bearing displacement monitoring device to other types of equipment is essentially the same as the principle applied to ships, which will not be elaborated here.

[0021] See also Figure 1 , Figure 1 It is a structural schematic diagram of a device for monitoring the displacement of an intermediate bearing of an output shaft of a ship in one embodiment of the present invention. The device for monitoring the displacement of an intermediate bearing of an output shaft of a ship comprises a reference measurement component 1, an on-site measurement component 2 and a data acquisition and processing component 3. The reference measurement component 1 comprises a main sensor 11 and a main transmitter 12. The on-site measurement component 2 comprises an auxiliary sensor 23, a receiver 21 and an auxiliary transmitter 22. The auxiliary sensor 23 and the main sensor 11 are both used to measure the angle of the ship at their respective corresponding positions. The receiver 21 is used to receive infrared rays emitted by the main transmitter 11.

[0022] The data acquisition and processing component 3 is connected to the reference measurement component 1 and the local measurement component 2, and is used to calculate the ship angle difference measured by the main sensor 11 and the auxiliary sensor 23, and calculate the displacement difference between the main transmitter 12 and the auxiliary transmitter 23.

[0023] In this embodiment, the main sensor 11 and the auxiliary sensor 23 are both IMU sensors, and are used to measure the angle of the ship at their location. The difference between the ship angles of the two sensors is the offset angle. Therefore, the main sensor 11 and the auxiliary sensor 23 can be set on the intermediate bearings 40 at both ends of the output shaft to be measured to measure the offset angles of the two intermediate bearings 40.

[0024] The main transmitter 12 and the sub-transmitter 22 are both very fine infrared transmitters, and both can emit very fine infrared rays. The receiver 21 is used to receive the very fine infrared rays emitted by the main transmitter 12 or the sub-transmitter 22. The main transmitter 12 or the sub-transmitter 22 can be arranged on one of the intermediate bearings 40, and the receiver 21 can be arranged on another adjacent intermediate bearing 40. The very fine infrared rays emitted by the main transmitter 12 or the sub-transmitter 22 can be received by the receiver 21. It should be emphasized that the receiving area of ​​the receiver 21 is large. Even if the receiver 21 is offset by a certain distance, and the infrared rays are very fine infrared rays, the receiver 21 can also receive the emitted very fine infrared rays, and the data acquisition and processing component 3 can calculate the offset distance of the very fine infrared rays.

[0025] See also Figure 2 , Figure 2 The output shaft 4 of the illustrated embodiment is provided with two intermediate bearings, namely, the first intermediate bearing 5 and the second intermediate bearing 6. The first intermediate bearing 5 and the second intermediate bearing 6 are both provided with on-site measurement components, which are defined as the first measurement component 7 and the second measurement component 8 for the convenience of description. The output shaft 4 is connected to the drive motor 9 and driven to rotate by the drive motor 9. The reference measurement component 1 is fixedly installed beside the output shaft 4, and the main transmitter 12 of the reference measurement component 1 is aligned with the receiver 21 of the first measurement component 7 so that the extremely fine infrared rays emitted by the main transmitter 12 can be received by the receiver 21. When the first intermediate bearing 5 or the second intermediate bearing 6 is offset, the first intermediate bearing 5 or the second intermediate bearing 6 will inevitably be offset relative to the reference measurement component 1, and the offset distance in the length direction of the output shaft 4 is L1. The value of L1 can be sensed by the extremely fine infrared rays emitted by the main transmitter 12 of the reference measurement component 1 being received by the receiver 21 of the first measurement component 7. The offset angle of the first intermediate bearing 5 can be sensed by the auxiliary sensor 23 of the first measurement component 7, for example Figure 2 In the illustrated embodiment, the offset angle of the first intermediate bearing 5 is R1.

[0026] The first measuring component 7 also has a sub-transmitter 22, and the very fine infrared rays emitted by the sub-transmitter 22 can be received by the receiver of the second measuring component 8. Even if the second intermediate bearing 6 is offset relative to the first intermediate bearing 5, the receiver of the second measuring component 8 can usually receive the very fine infrared rays emitted by the sub-transmitter 22 of the first measuring component 7 and can sense the offset L2 of the very fine infrared rays. In addition, the second measuring component 8 has a sub-sensor 23, and can sense the offset angle R2 of the second intermediate bearing 6 through the sub-sensor 23.

[0027] The number of the on-site measuring components 2 is not limited and can be set as required. Generally, the more the number of the intermediate bearings, the more the number of the on-site measuring components 2 is set.

[0028] In one embodiment, see Figure 3 The reference measurement assembly 1 further includes a first box 13 and first flanges 14 disposed on the left and right sides of the first box 13. The reference measurement assembly 1 can be fixed on the ship by screws through the two first flanges 14. The first box 13 is provided with a first light outlet 131. The main sensor 11 and the main transmitter 12 are both disposed inside the first box 13. The transmitting end of the main transmitter 11 is disposed at the first light outlet 131, so that the extremely fine infrared rays emitted by the main transmitter 11 can be emitted through the first light outlet 131.

[0029] In one embodiment, see Figure 4 The on-site measurement component 2 also includes a second box body 24 and second flanges 25 disposed on the left and right sides of the second box body 24. The on-site measurement component 2 can be fixed on the ship by screws through the two second flanges 25. The second box body 24 is provided with a second light outlet 26 and a third light outlet 27 disposed opposite to each other. The sub-sensor 23, the receiver 21 and the sub-transmitter 22 are all disposed inside the second box body 24. The receiving end of the receiver 21 is disposed at the second light outlet 26 to receive the extremely fine infrared rays emitted by the sub-transmitter 22 of the previous on-site measurement component 2. The transmitting end of the sub-transmitter 22 is disposed at the third light outlet 27 to allow the sub-transmitter 22 to emit extremely fine infrared rays through the third light outlet 27 and irradiate the receiver 21 of the next on-site measurement component 2.

[0030] In one embodiment, see Figure 2 The on-site measurement component 2 also includes a first motor 30, a bracket 28 and a rotating drum 29 arranged inside the second box body 24. The bracket 28 is connected to the rotating drum 29. The receiver 21 and the sub-transmitter 22 are arranged at both ends of the rotating drum 29. The first motor 30 rotates to connect the bracket 28 and can drive the bracket 28 to rotate along the first direction, so as to adjust the direction of the receiver 21 and the sub-transmitter 22. The receiving end of the receiver 21 is aligned with the second light outlet 26, so as to receive the extremely fine infrared rays emitted by the sub-transmitter 22 of the previous on-site measurement component 2. The transmitting end of the sub-transmitter 22 is aligned with the third light outlet 27, so that the sub-transmitter 22 emits the extremely fine infrared rays through the third light outlet 27 and irradiates the receiver 21 of the next on-site measurement component 2.

[0031] In one embodiment, see Figure 2 The on-site measurement assembly 2 further includes a second motor 31 disposed on the bracket 28, the bracket 28 is rotatably connected to the rotating drum 29, and the second motor 31 is connected to the rotating drum 29 and can drive the rotating drum 29 to rotate along a second direction, and the second direction is perpendicular to the first direction. In this embodiment, by providing the second motor 31, the motion range of the receiver 21 and the sub-transmitter 22 can be further expanded, so that the receiver 21 and the sub-transmitter 22 can more conveniently receive and transmit extremely fine infrared rays.

[0032] In one embodiment, see Figure 2 The on-site measurement assembly 2 further includes a controller 32, which is disposed at the bottom of the second box 24, and the first motor 30 is disposed at the controller 32, and the controller 32 is connected to the first motor 30, the second motor 31, the receiver 21, and the sub-transmitter 22. In this embodiment, the controller 32 is connected to the terminal device, so that the controller 32 is operated through the terminal device to control the first motor 30 and the second motor 31 to work, drive the drum 29 to rotate in the first direction and / or the second direction, and adjust the direction of the receiver 21 and the sub-transmitter 22. The terminal device can also control the receiver 21 and the sub-transmitter 22 to work or not work through the controller 32.

[0033] In one embodiment, see Figure 2 , the receiver 21 is a CCD four-quadrant photodetector. When the extremely fine infrared ray is irradiated on the detector, the CCD four-quadrant photodetector locates the center of the extremely fine infrared ray through the output currents of the four quadrants. Specifically, when the extremely fine infrared spot is incident on the four-quadrant detector, the four quadrants will output different photocurrents IA, IB, IC and ID. By calculating these currents, the offset of the extremely fine infrared spot can be obtained, thereby locating the center of the spot. This detector is particularly important in space laser communication systems because it requires an acquisition, targeting and tracking (APT) system to ensure precise alignment and stable tracking at both ends of the communication.

[0034] In addition, the CCD four-quadrant photodetector has the characteristics of high signal-to-noise ratio, high sensitivity, and high precision in performance. It also has the advantages of large dynamic range, small photoelectric crosstalk, high integration, small size, strong overload resistance, and stable and reliable performance.

[0035] In one embodiment, see Figure 2 The data acquisition and processing component 3 includes a data collector, a processor and a display. The data collector is connected to the reference measurement component 1 and the on-site measurement component 2, and is used to collect the light spot information of the extremely fine infrared light measured by the reference measurement component 1 and the on-site measurement component 2. The processor is connected to the data collector and the display. The processor can receive the light spot information collected by the data collector and process it into visual information and transmit it to the display, and the specific angle offset and position offset of the intermediate bearing of the ship are displayed on the display. The staff can set the ship's maneuvering plan in advance by viewing the data displayed on the display, so as to avoid further displacement of the intermediate bearing in the future.

[0036] In a second aspect, the present invention also discloses a ship, comprising a hull, a drive motor, an output shaft, a plurality of intermediate bearings, and the above-mentioned ship output shaft intermediate bearing displacement monitoring device, wherein the output shaft is arranged along the length direction of the hull, and the drive motor is connected to the output shaft and used to drive the output shaft to rotate, so that the output shaft provides power for the navigation of the hull. The plurality of intermediate bearings are arranged at intervals along the length direction of the output shaft, and all the intermediate bearings are arranged and fixed on the hull, so that the intermediate bearings support the output shaft and the output shaft can rotate normally. There are a plurality of on-site measurement components, and the plurality of on-site measurement components are correspondingly arranged on the plurality of intermediate bearings. The reference measurement component is arranged close to the output shaft, and the infrared emission direction of the reference measurement component is roughly parallel to the axial direction of the output shaft. When the hull is subjected to different degrees of ballast or subjected to a large wind force and deforms to a large extent, the hull will drive one or more intermediate bearings to be displaced, and the extremely fine infrared rays emitted and received by the plurality of on-site measurement components arranged on the intermediate bearings can be used to measure the displacement angle and displacement distance of the corresponding intermediate bearings, so as to inverse the displacement degree of the intermediate bearings, so as to formulate a reasonable ship operation plan in advance and reduce the displacement of the intermediate bearings.

[0037] In one of the embodiments, due to the functional configuration of the ship, the ship also includes a bulkhead 10, and the output shaft 4 is relatively long. In order not to affect the normal use of the output shaft 4, the output shaft can only be passed through the bulkhead 10. On-site measurement components 2 are provided on opposite sides of the bulkhead 10. The two on-site measurement components 2 can cooperate with other on-site measurement components 2 or reference measurement components 1 to feedback the offset angle and offset distance of the intermediate bearing.

[0038] In order to better understand the present invention, the following Figures 1 to 4 The technical solution of the present invention is described in detail: The ship output shaft intermediate bearing displacement monitoring device provided by the present invention can be used for installation on ships. The reference measurement component is arranged close to the output shaft, and multiple on-site measurement components can be installed one by one on multiple intermediate bearings, and the reference measurement component and multiple on-site measurement components are installed along the length direction of the output shaft, so that the infrared rays emitted by the main transmitter of the reference measurement component can be received by the receiver of the on-site measurement component, and the infrared rays emitted by the auxiliary transmitter can be received by the receiver of the next on-site measurement component, so as to form a line of signal conduction. When the intermediate bearing is displaced, the offset angle can be obtained by the angle difference measured by the adjacent sensors, and the deformation offset can be measured by the infrared offset sent and received by the adjacent transmitters and receivers. The obtained intermediate bearing offset angle and offset can provide data reference for ship operation, and a reasonable ship operation plan can be set in advance to avoid the intermediate bearing from being easily damaged.

[0039] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A device for monitoring displacement of an intermediate bearing of a ship output shaft, wherein the output shaft is connected to a drive motor and driven to rotate by the drive motor, and an intermediate bearing is sleeved on the output shaft, characterized in that: The displacement monitoring device comprises: A reference measurement assembly is disposed near the output shaft, the reference measurement assembly comprising a main sensor and a main transmitter; an on-site measurement assembly, arranged at the intermediate bearing, comprising a secondary sensor, a receiver and a secondary transmitter, wherein the secondary sensor and the main sensor are used to measure the angle of the ship at their respective corresponding positions, the receiver and the main transmitter are arranged along the axial direction of the output shaft, and the receiver is used to receive infrared rays emitted by the main transmitter; and The data acquisition and processing component is connected to the reference measurement component and the on-site measurement component, and is used to calculate the difference in ship angles measured by the main sensor and the auxiliary sensor, and to calculate the difference in displacement between the main transmitter and the auxiliary transmitter.

2. The device for monitoring displacement of the intermediate bearing of the output shaft of a ship according to claim 1, characterized in that: The reference measurement assembly also includes a first box body and first flanges arranged on the left and right sides of the first box body. The first box body is provided with a first light outlet. The main sensor and the main transmitter are both arranged inside the first box body. The transmitting end of the main transmitter is arranged at the first light outlet.

3. The device for monitoring displacement of the intermediate bearing of the output shaft of a ship according to claim 1, characterized in that: The on-site measurement component also includes a second box body and second flanges arranged on the left and right sides of the second box body, the second box body is provided with a second light outlet and a third light outlet that are arranged opposite to each other, the auxiliary sensor, the receiver and the auxiliary transmitter are all arranged inside the second box body, the receiving end of the receiver is arranged at the second light outlet, and the transmitting end of the auxiliary transmitter is arranged at the third light outlet.

4. The device for monitoring displacement of the intermediate bearing of the output shaft of a ship according to claim 3, characterized in that: The on-site measurement assembly also includes a first motor, a bracket and a rotating drum arranged inside the second box body, the bracket is connected to the rotating drum, the receiver and the sub-transmitter are arranged at both ends of the rotating drum, the first motor is rotatably connected to the bracket and can drive the bracket to rotate along a first direction so that the receiving end of the receiver is aligned with the second light outlet, and the transmitting end of the sub-transmitter is aligned with the third light outlet.

5. The device for monitoring displacement of the intermediate bearing of the output shaft of a ship according to claim 4, characterized in that: The on-site measurement assembly also includes a second motor disposed on the bracket, the bracket is rotatably connected to the rotating drum, the second motor is connected to the rotating drum and can drive the rotating drum to rotate along a second direction, and the second direction is perpendicular to the first direction.

6. The device for monitoring displacement of the intermediate bearing of the output shaft of a ship according to claim 5, characterized in that: The on-site measurement component also includes a controller, which is arranged at the bottom of the second box body, the first motor is arranged at the controller, and the controller is connected to the first motor, the second motor, the receiver and the sub-transmitter.

7. The device for monitoring displacement of the intermediate bearing of the output shaft of a ship according to claim 1, characterized in that: The receiver is a CCD four-quadrant photoelectric detector.

8. The device for monitoring displacement of the intermediate bearing of the output shaft of a ship according to claim 1, characterized in that: The data acquisition and processing component includes a data collector, a processor and a display. The data collector is connected to the reference measurement component and the on-site measurement component, and the processor is connected to the data collector and the display.

9. A ship, characterized in that: It includes a hull, a drive motor, an output shaft, a plurality of intermediate bearings, and a ship output shaft intermediate bearing displacement monitoring device as described in any one of claims 1 to 8, wherein the output shaft is arranged along the length direction of the hull, and the plurality of intermediate bearings are arranged at intervals along the length extension direction of the output shaft. There are multiple on-site measurement components, and the plurality of on-site measurement components are correspondingly arranged on the plurality of intermediate bearings. The drive motor is connected to the output shaft and is used to drive the output shaft to rotate, and the reference measurement component is arranged close to the output shaft.

10. The ship according to claim 9, characterized in that: The ship further comprises a cabin wall, the output shaft passes through the cabin wall, and the on-site measurement components are arranged on opposite sides of the cabin wall.

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