A viscous damper connecting joint for improving the stability of a local structure of a ship

Abstract

The utility model relates to ship damper technical field discloses a kind of viscous damper connecting nodes for improving ship local structure stability, including mounting bracket and base, base is welded in the middle of mounting bracket bottom, the left side of base top end is fixedly connected with connecting plate, the right side top of mounting bracket is fixedly connected with bearing ring, bearing ring is rotatably connected with damper oil cylinder, damper oil cylinder front end is provided with damper piston rod.The utility model is provided with movable head, so that viscous damper has certain swing space in working process, and through ball bearing ring, tail back thrust is alleviated, and damping action is ensured to be coherent and stable, and connecting plate and mounting bracket are reinforced by triangular steel sheet, fixed steel sheet and multiple bolts, so as to improve node fatigue resistance and long-term stability, while reserving maintenance passage, facilitate later maintenance and lubrication, overall improve the anti-seismic stability and operation safety of ship local structure.

Description

Technical Field

[0001] This utility model relates to the field of ship damper technology, specifically a viscous damper connection node for improving the stability of local ship structures. Background Technology

[0002] Ships frequently encounter various disturbances during navigation, such as wave impacts, engine vibrations, and propeller rotation. Over time, localized structural components are prone to fatigue, cracking, and even loosening. To mitigate this, many ships now install viscous dampers in critical areas to reduce shock and protect the long-term stability of the structure.

[0003] The principle of a viscous damper is not complicated. It contains a damping fluid, and the reciprocating movement of the piston rod causes the fluid to flow. As the fluid passes through narrow channels, it generates resistance, converting the energy of the vibration into heat and releasing it, thus achieving the effect of shock absorption. This device is highly responsive and effective, and it is used in many compartments, deck joints, and equipment foundations.

[0004] However, while the damper itself may perform well, the connection points are often not robust enough. Over time, the welded seats, transition plates, and bolt fixings at the front and rear ends of some dampers can loosen, or even deform or misalign. Especially during periods of high vibration amplitude or frequency, the connection points may not keep up with the damper's movement, leading to uneven stress and affecting the overall damping effect of the structure. Moreover, traditional connection structures often do not consider routine inspection and maintenance, making maintenance relatively inconvenient.

[0005] Therefore, a viscous damper connection node is needed to improve the local structural stability of ships and solve the above-mentioned technical defects. Utility Model Content

[0006] The purpose of this utility model is to provide a viscous damper connection node that improves the stability of the local structure of a ship, so as to solve the problems mentioned in the background art: the connection node of the damper is not reliable enough, it is prone to deformation and misalignment after long-term operation, resulting in uneven stress, affecting vibration reduction, and inconvenient maintenance.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a viscous damper connection node for improving the stability of local structures of a ship, comprising a mounting frame and a base. A base is welded to the middle of the bottom of the mounting frame. A connecting plate is fixedly connected to the left side of the top of the base. A tail connection point is fixedly connected to the top right side of the mounting frame. A damper cylinder is rotatably connected to the tail connection point. A damper piston rod is provided at the front end of the damper cylinder. A connecting seat is fixedly connected to the top of the connecting plate. A movable rotating head is rotatably connected to the connecting seat. The front end of the damper piston rod is rotatably sleeved at the eccentric position of the movable rotating head. Triangular steel plates are fixed at all four corners of the connecting plate. Fixed steel plates abut against the outer sides of the triangular steel plates. Fixed bolts are fixedly connected to the bottom edge of the mounting frame. Reinforcing bolts are fixedly connected between the triangular steel plates and the connecting plate.

[0008] As a further technical solution of this utility model, a bearing ring is installed between the tail connection point and the outer wall of the damper cylinder, and the bearing ring is a ball bearing.

[0009] As a further technical solution of this utility model, the triangular steel sheet is a right-angled triangular structure, and two sets of reinforcing bolts are installed at each set of triangular steel sheets.

[0010] As a further technical solution of this utility model, the fixing steel plate has an inverted "L" shaped structure, and four sets of fixing bolts are installed at each set of fixing steel plates.

[0011] As a further technical solution of this utility model, an upper shell is added to the outside of the movable rotating head. The upper shell is fixed to the connecting seat. A reserved groove is opened at one end of the upper shell. A rotating shaft is fixedly connected to one end of the movable rotating head. The rotating shaft extends through the reserved groove to the outside of the mounting frame.

[0012] As a further technical solution of this utility model, an end cap is fixedly connected to one end of the upper shell, and the end cap is assembled to the upper shell by screws.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting up a movable rotating head, connecting seat, damper piston rod, upper shell and detachable end cover, the viscous damper has a certain swing space during operation, and the ball bearing ring relieves the stern thrust, ensuring smooth and stable damping action. The connection plate and mounting frame are reinforced by triangular steel plates, fixed steel plates and multiple sets of bolts, thereby improving the fatigue resistance and long-term stability of the joint. At the same time, a maintenance passage is reserved to facilitate later maintenance and lubrication, thus improving the seismic stability and operational safety of the ship's local structure as a whole. Attached Figure Description

[0014] Figure 1 This is a frontal cross-sectional view of the present invention.

[0015] Figure 2 This is a top view cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a top view of the structure of this utility model;

[0017] Figure 4 This is a side view of the connecting plate structure of this utility model.

[0018] In the diagram: 1. Mounting bracket; 2. Base; 3. Connecting plate; 4. Connecting seat; 5. Fixing steel plate; 6. Fixing bolt; 7. Movable rotating head; 8. Upper shell; 9. Damper piston rod; 10. Damper cylinder; 11. Tail connection point; 12. Bearing ring; 13. Reinforcing bolt; 14. Triangular steel plate; 15. Rotating shaft; 16. End cover. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 This utility model provides an embodiment of a viscous damper connection node for improving the stability of a ship's local structure. It includes a mounting frame 1 and a base 2. The base 2 is welded to the middle of the bottom of the mounting frame 1. A connecting plate 3 is fixedly connected to the left side of the top of the base 2. A tail connection point 11 is fixedly connected to the top right side of the mounting frame 1. A damper cylinder 10 is rotatably connected to the tail connection point 11. A damper piston rod 9 is provided at the front end of the damper cylinder 10. A connecting seat 4 is fixedly connected to the top of the connecting plate 3. A movable rotating head 7 is rotatably connected to the connecting seat 4. The front end of the damper piston rod 9 is rotatably sleeved at the eccentric position of the movable rotating head 7. Triangular steel plates 14 are fixed at the four corners of the connecting plate 3. Fixed steel plates 5 are abutted on the outer side of the triangular steel plates 14. Fixed steel plates 5 are fixedly connected to the bottom edge of the mounting bracket 1 with fixing bolts 6. Reinforcing bolts 13 are fixedly connected between the triangular steel plates 14 and the connecting plate 3. The triangular steel plates 14 are right-angled triangular structures. Two sets of reinforcing bolts 13 are installed at each set of triangular steel plates 14. The fixed steel plates 5 are inverted "L" shaped structures. Four sets of fixing bolts 6 are installed at each set of fixed steel plates 5.

[0021] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this structure allows the damper piston rod 9 to be eccentrically connected to the movable rotating head 7, enabling the damper to form a certain swing space during operation, which helps to alleviate the impact intensity during hull vibration. The connection plate 3 and the mounting bracket 1 are fixed by using triangular steel plates 14 and fixing bolts 6 for tightening, making the structure more stable and less prone to loosening. Combined with the reinforcing bolts 13, which are locked from multiple angles, it effectively avoids displacement or deformation after local stress, which has a positive effect on ensuring the working position of the damper and the stability of the hull structure. The structure remains stable under repeated fatigue impacts.

[0022] A bearing ring 12 is installed between the tail connection point 11 and the outer wall of the damper cylinder 10. The bearing ring 12 is a ball bearing.

[0023] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the damper has a tail connection point 11 at the tail end, with a ball bearing ring 12 in the middle for transition. This effectively alleviates the reverse thrust generated by the damper cylinder 10 during operation, and avoids jamming or fatigue cracking caused by hard connection at the tail end. The movable rotating head 7 is fitted with an upper shell 8 on the outside, which not only provides protection but also prevents dust and debris from interfering with the rotation. The entire structure can maintain the continuity of the damper's action and the stability of the nodes when dealing with severe swaying or impact of the hull.

[0024] The movable rotating head 7 is fitted with an upper shell 8, which is fixed to the connecting seat 4. A reserved slot is opened at one end of the upper shell 8. A rotating shaft 15 is fixedly connected to one end of the movable rotating head 7. The rotating shaft 15 extends through the reserved slot to the outside of the mounting bracket 1. An end cover 16 is fixedly connected to one end of the upper shell 8. The end cover 16 is assembled to the upper shell 8 by screws.

[0025] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a detachable end cover 16 is provided at one end of the upper shell 8, which facilitates daily maintenance and lubrication. There is no need to disassemble the connecting plate 3 or unload a large area. The working status of the internal components can be quickly checked simply by opening the end cover 16. This design is especially suitable for on-site maintenance in the confined space of the ship or during continuous navigation, reducing disassembly and assembly time, reducing the difficulty of manual operation, and also avoiding damping failure due to inadequate maintenance, thus improving the reliability of the structure.

[0026] Working principle: After installation, the damper cylinder 10 and the mounting frame 1 are rotatably connected via the tail connection point 11. The tail connection point 11 contains a ball bearing ring 12 to buffer the reverse thrust generated during damper operation, ensuring smooth tail rotation and preventing jamming or cracking at the connection. The front damper piston rod 9 is eccentrically fitted onto the movable rotor 7. As the ship vibrates, the damper piston rod 9 reciprocates, driving the internal damping fluid to flow and dissipate energy. Because the movable rotor 7 has a certain swing space, it can alleviate the impact concentration between structures and enhance the damping effect. As a result, the movable rotating head 7 is installed inside the connecting seat 4, and is covered and protected by an upper shell 8. The end of the shell is provided with a reserved groove and a removable end cap 16. When it is necessary to inspect or lubricate the internal parts, it is only necessary to unscrew the end cap 16 for quick operation, which is convenient for daily maintenance. The entire connection structure is rigidly connected to the mounting bracket 1 through the connecting plate 3. Triangular steel plates 14 and reinforcing bolts 13 are added to the four corners of the connecting plate 3. At the same time, inverted "L" shaped fixing steel plates 5 and multiple sets of fixing bolts 6 are pressed on the outside to form a multi-point distributed force support, which effectively prevents node displacement or loosening and ensures that the damper maintains stable operation under continuous vibration.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A viscous damper connection node for improving the local structural stability of a ship, comprising a mounting bracket (1) and a base (2), characterized in that: The mounting frame (1) has a base (2) welded to the middle of its bottom. A connecting plate (3) is fixedly connected to the left side of the top of the base (2). A tail connection point (11) is fixedly connected to the top right side of the mounting frame (1). A damper cylinder (10) is rotatably connected to the tail connection point (11). A damper piston rod (9) is provided at the front end of the damper cylinder (10). A connecting seat (4) is fixedly connected to the top of the connecting plate (3). A movable rotating head (7) is rotatably connected to the connecting seat (4). The front end of the damper piston rod (9) is rotatably sleeved at the eccentric position of the movable rotating head (7). Triangular steel plates (14) are fixed at all four corners of the connecting plate (3). Fixed steel plates (5) abut against the outer side of the triangular steel plates (14). Fixed bolts (6) are fixedly connected to the bottom edge of the mounting frame (1). Reinforcing bolts (13) are fixedly connected between the triangular steel plates (14) and the connecting plate (3).

2. The viscous damper connection node for improving the local structural stability of a ship according to claim 1, characterized in that: A bearing ring (12) is installed between the tail connection point (11) and the outer wall of the damper cylinder (10), and the bearing ring (12) is a ball bearing.

3. The viscous damper connection node for improving the local structural stability of a ship according to claim 1, characterized in that: The triangular steel sheet (14) is a right-angled triangular structure, and two sets of reinforcing bolts (13) are installed at each set of triangular steel sheets (14).

4. The viscous damper connection node for improving the local structural stability of a ship according to claim 1, characterized in that: The fixing steel plate (5) has an inverted "L" shape structure, and four sets of fixing bolts (6) are installed at each set of fixing steel plates (5).

5. A viscous damper connection node for improving the local structural stability of a ship according to claim 1, characterized in that: The movable rotating head (7) is fitted with an upper shell (8), which is fixed to the connecting seat (4). A reserved slot is provided at one end of the upper shell (8), and a rotating shaft (15) is fixedly connected to one end of the movable rotating head (7). The rotating shaft (15) extends through the reserved slot to the outside of the mounting frame (1).

6. A viscous damper connection node for improving the local structural stability of a ship according to claim 5, characterized in that: One end of the upper shell (8) is fixedly connected to an end cap (16), which is assembled to the upper shell (8) by screws.

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