A ship stern shaft tube centering device

Abstract

The utility model relates to ship installation technical field discloses a kind of ship stern shaft tube centering device, including installation box, centering box and protective box, the bottom of installation box is installed with centring assembly, the inside of protective box is installed with clamping assembly, the inside of centering box is installed with adjusting assembly;The centring assembly includes motor one, the bottom of the installation box is fixedly connected in the motor one, the output end of the motor one is fixedly connected with rotating rod, the both ends of the rotating rod are rotatably connected with connecting rod, one end of two The connecting rod is rotatably connected in the bottom of the centering box.In the utility model, the shaft tube is put into round plate, the motor is started to drive gear to drive gear ring, sliding bar passes through sliding slot to make sliding strip and clamping wheel centring clamping shaft tube.After clamping, the motor is started to rotate rotating rod, and the centering box is slidably butted.Just when adjusting position, electric push rod pushes rack, gear rotation makes rotating plate linkage base fine-tune angle, reduces error.

Description

Technical Field

[0001] This utility model relates to the field of ship installation technology, and in particular to a ship stern shaft alignment device. Background Technology

[0002] The stern tube is a key component of a ship's propulsion system. It supports the stern shaft and seals the compartment, ensuring the shaft's stability during rotation and preventing seawater from seeping into the ship. Its installation accuracy directly affects the ship's propulsion efficiency, stern shaft wear rate, and navigational safety, making it a crucial aspect of shipbuilding and maintenance.

[0003] Existing ship stern shaft alignment devices mostly rely on manual operation. Tools such as dial indicators and laser collimators are used to measure the concentricity of the two pipe sections, and then workers manually adjust the pipe positions to achieve alignment.

[0004] However, existing measurement and adjustment methods are easily affected by factors such as operating experience and environmental vibration, making it difficult to guarantee the precise alignment of the two pipe sections, resulting in a relatively large error during calibration. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a ship stern tube alignment device, which aims to improve the problem of large alignment errors in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A ship stern tube alignment device includes a mounting box, an alignment box, and a protective box. An alignment component is installed at the bottom of the mounting box, a clamping component is installed inside the protective box, and an adjustment component is installed inside the alignment box.

[0008] The centering component includes a motor, which is fixedly connected to the bottom of the mounting box. A rotating rod is fixedly connected to the output end of the motor, and connecting rods are rotatably connected to both ends of the rotating rod. One end of each of the two connecting rods is rotatably connected to the bottom of the centering box.

[0009] As a further description of the above technical solution:

[0010] The clamping assembly includes a second motor, which is fixedly connected inside the protective box. The output end of the second motor is fixedly connected to a first gear. A circular plate is provided inside the protective box. A toothed ring is fixedly connected to the outer side of the circular plate. The first gear and the toothed ring mesh with each other. Multiple sliding grooves are opened inside the circular plate. A sliding rod is slidably connected inside each of the multiple sliding grooves. A sliding bar is fixedly connected to the outer side of the sliding rod.

[0011] As a further description of the above technical solution:

[0012] The adjustment assembly includes an electric push rod, which is installed inside the centering box. A rack is fixedly connected to the movable end of the electric push rod. A second gear is rotatably connected inside the centering box. The second gear and the rack mesh with each other. A rotating plate is fixedly connected to the top of the second gear.

[0013] As a further description of the above technical solution:

[0014] Both ends of the two calibration boxes are fixedly connected to sliders, and the calibration boxes are slidably connected to the inside of the mounting box through the sliders;

[0015] As a further description of the above technical solution:

[0016] A protective box is fixedly connected to the bottom of the mounting box, and the motor is installed inside the protective box;

[0017] As a further description of the above technical solution:

[0018] A base is fixedly connected to the top of the rotating plate, and a housing is fixedly connected to the top of the base;

[0019] As a further description of the above technical solution:

[0020] The outer casing has multiple fixed boxes fixedly connected inside, and the slide bar is slidably connected inside the fixed boxes;

[0021] As a further description of the above technical solution:

[0022] A clamping wheel is fixedly connected to one end of the slide bar.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, starting the motor and rotating the rotating rod pulls the connecting rod from both sides toward the middle, causing the centering box to slide inside the mounting box until the two are aligned. If position adjustment is required, starting the electric push rod pushes the rack forward, causing the gear two to rotate, which in turn causes the rotating plate to rotate, and the base to rotate accordingly. The clamping devices at both ends can then be adjusted slightly to make the centering more accurate and reduce errors.

[0025] 2. In this utility model, the shaft tube to be aligned is placed inside the circular plate, the motor is started, the drive gear 1 drives the gear ring, and the slide rod moves towards the center through the slide groove. At this time, the slide bar and the clamping wheel are aligned and clamp the shaft tube. The clamping components on both sides can clamp different devices at the same time, such as the alignment between the shaft tube and the main unit. It can clamp the connection end of the shaft tube and the main unit at the same time. This clamping method is more secure. Attached Figure Description

[0026] Figure 1This is a three-dimensional schematic diagram of a ship stern shaft alignment device proposed in this utility model;

[0027] Figure 2 An exploded view of the gear ring of a ship stern shaft alignment device proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the clamping wheel of a ship stern tube alignment device proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of a motor in a ship stern shaft alignment device proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the rack structure of a ship stern shaft alignment device proposed in this utility model.

[0031] Legend:

[0032] 1. Mounting box; 2. Protective box; 3. Motor 1; 4. Rotating rod; 5. Connecting rod; 6. Centering box; 7. Slider; 8. Rotating plate; 9. Gear 2; 10. Rack; 11. Electric push rod; 12. Housing; 13. Circular plate; 14. Slide groove; 15. Gear ring; 16. Gear 1; 17. Motor 2; 18. Slide rod; 19. Protective box; 20. Slide bar; 21. Clamping wheel; 22. Fixing box; 23. Base. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 , Figure 4 and Figure 5 The present invention provides an embodiment of a ship stern tube alignment device, comprising an installation box 1, an alignment box 6, and a protective box 19. The installation box 1 serves as the basic load-bearing structure of the entire device, providing a stable installation platform for each component. An alignment component is installed at the bottom of the installation box 1, a clamping component is installed inside the protective box 19, and an adjustment component is installed inside the alignment box 6.

[0035] The centering assembly includes a motor 3, which provides power for the centering operation. Motor 3 is fixedly connected to the bottom of the mounting box 1. A rotating rod 4 is fixedly connected to the output end of motor 3, allowing it to rotate under the drive of motor 3. Connecting rods 5 are rotatably connected to both ends of the rotating rod 4. One end of each connecting rod 5 is rotatably connected to the bottom of the centering box 6. When motor 3 starts, the rotating rod 4 rotates, pulling the centering box 6 towards the center through the connecting rods 5 at both ends. This allows the centering box 6 to slide smoothly inside the mounting box 1 until the components are aligned, completing a crucial step in the centering operation. Slider 7 is fixedly connected to both ends of the two centering boxes 6, allowing them to slide slidably inside the mounting box 1. The slider 7 ensures smoother and more stable sliding of the centering box 6 inside the mounting box 1, reducing frictional resistance during sliding. It also effectively limits and guides the sliding trajectory of the centering box 6, ensuring it slides in the preset direction and guaranteeing the stability and accuracy of the centering operation.

[0036] The adjustment assembly includes an electric push rod 11, which serves as the power source for the adjustment action. The electric push rod 11 is installed inside the alignment box 6. A rack 10 is fixedly connected to the movable end of the electric push rod 11. When the electric push rod 11 extends or retracts, it pushes the rack 10 to slide forward or backward. A gear 9 is rotatably connected inside the alignment box 6, meshing with the rack 10. A rotating plate 8 is fixedly connected to the top of the gear 9. When the rack 10 slides, it drives the gear 9 to rotate. The rotation of the gear 9 drives the rotating plate 8 to rotate synchronously. The rotation of the rotating plate 8, in turn, drives related components to adjust their angles, ensuring the accuracy of the alignment operation.

[0037] Reference Figures 1-3The clamping assembly includes a second motor 17, which provides driving force for the clamping action. The second motor 17 is fixedly connected inside the protective box 19. The output end of the second motor 17 is fixedly connected to a first gear 16. A circular plate 13 is provided inside the protective box 19. A gear ring 15 is fixedly connected to the outer side of the circular plate 13. The first gear 16 and the gear ring 15 mesh with each other. When the first gear 16 rotates, it can drive the circular plate 13 to rotate through the meshing transmission with the gear ring 15. Multiple sliding grooves 14 are provided inside the circular plate 13. The sliding grooves 14 provide a guiding function for the sliding of the slide rod 18, ensuring that the slide rod 18 can move along a preset trajectory. The slide rod 18 is slidably connected inside each of the multiple sliding grooves 14. 8. A slide bar 20 is fixedly connected to the outer side of the slide bar 18. The sliding of the slide bar 18 will drive the slide bar 20 to move synchronously, thereby realizing the clamping action of the component. Multiple fixing boxes 22 are fixedly connected inside the outer shell 12. The slide bar 20 is slidably connected inside the fixing box 22. A clamping wheel 21 is fixedly connected to one end of the slide bar 20. The clamping wheel 21 directly contacts the stern tube of the ship and related connecting components. Under the drive of the slide bar 20, multiple clamping wheels 21 clamp the component from different directions. This multi-directional clamping method greatly enhances the clamping firmness and avoids the component from loosening or displacement during subsequent alignment and adjustment, providing a solid guarantee for the smooth progress of the alignment operation.

[0038] Reference Figure 1 , Figure 2 and Figure 4 The bottom of the mounting box 1 is fixedly connected to the protective box 2. The motor 3 is installed inside the protective box 2. The protective box 2 provides an independent protective space for the motor 3, which can effectively block external dust, moisture and collisions from damaging the motor 3, extend the service life of the motor 3 and ensure its stable and reliable operation. The top of the rotating plate 8 is fixedly connected to the base 23, and the top of the base 23 is fixedly connected to the outer shell 12. The outer shell 12 not only protects the internal components, but also provides a mounting support structure for the clamping components, making the structure of the entire device more compact and reasonable.

[0039] Working principle: First, the shaft tube to be aligned is placed inside the circular plate 13. The motor 17 is started, and the gear 16 drives the gear ring 15. The slide bar 18 moves to the center through the slide groove 14. At this time, the slide bar 20 and the clamping wheel 21 are aligned and clamp the shaft tube. The clamping components on both sides can clamp different devices at the same time. For example, when aligning the shaft tube and the main unit, the connection end of the shaft tube and the main unit can be clamped at the same time. This clamping method can be more secure.

[0040] Secondly, after clamping, start motor 3 and rotate the rotating rod 4. Pull the connecting rod 5 from both sides towards the middle, so that the centering box 6 can slide inside the mounting box 1 until the two are aligned. Then, when the position needs to be adjusted, start the electric push rod 11 and push the rack 10 to slide forward. At this time, the gear 9 rotates, causing the rotating plate 8 to rotate in conjunction. At this time, the base 23 rotates, and the clamping device at both ends can be adjusted slightly to make the centering more accurate and reduce errors.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ship stern tube alignment device, comprising a mounting box (1), an alignment box (6), and a protective box (19), characterized in that: The bottom of the mounting box (1) is equipped with an alignment component, the inside of the protective box (19) is equipped with a clamping component, and the inside of the alignment box (6) is equipped with an adjustment component. The centering component includes a motor (3), which is fixedly connected to the bottom of the mounting box (1). A rotating rod (4) is fixedly connected to the output end of the motor (3). Both ends of the rotating rod (4) are rotatably connected to connecting rods (5). One end of each connecting rod (5) is rotatably connected to the bottom of the centering box (6).

2. The ship stern shaft alignment device according to claim 1, characterized in that: The clamping assembly includes a second motor (17), which is fixedly connected inside the protective box (19). The output end of the second motor (17) is fixedly connected to a first gear (16). A circular plate (13) is provided inside the protective box (19). A toothed ring (15) is fixedly connected to the outside of the circular plate (13). The first gear (16) and the toothed ring (15) mesh with each other. Multiple sliding grooves (14) are provided inside the circular plate (13). A sliding rod (18) is slidably connected inside each of the multiple sliding grooves (14). A sliding bar (20) is fixedly connected to the outside of the sliding rod (18).

3. A ship stern shaft alignment device according to claim 2, characterized in that: The adjustment assembly includes an electric push rod (11), which is installed inside the centering box (6). The movable end of the electric push rod (11) is fixedly connected to a rack (10). The centering box (6) is rotatably connected to a second gear (9). The second gear (9) and the rack (10) mesh with each other. The top of the second gear (9) is fixedly connected to a rotating plate (8).

4. A ship stern shaft alignment device according to claim 1, characterized in that: Both ends of the two centering boxes (6) are fixedly connected to sliders (7), and the centering boxes (6) are slidably connected to the inside of the mounting box (1) through the sliders (7).

5. A ship stern shaft alignment device according to claim 1, characterized in that: The bottom of the mounting box (1) is fixedly connected to a protective box (2), and the motor (3) is installed inside the protective box (2).

6. A ship stern shaft alignment device according to claim 3, characterized in that: The top of the rotating plate (8) is fixedly connected to a base (23), and the top of the base (23) is fixedly connected to a shell (12).

7. A ship stern shaft alignment device according to claim 6, characterized in that: The outer shell (12) has multiple fixed boxes (22) fixedly connected inside, and the slide bar (20) is slidably connected inside the fixed box (22).

8. A ship stern shaft alignment device according to claim 7, characterized in that: One end of the slide bar (20) is fixedly connected to a clamping wheel (21).

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