A multi-directional vibration isolation device for ships

Abstract

The present invention discloses a multi-directional vibration isolation device for ships, comprising a carrier and a plurality of vibration isolators. The plurality of vibration isolators are fixed to the upper and lower sides of the carrier via a fixing seat with a universal joint, one end of the universal joint being fixed to the fixing seat and the other end being fixed to the vibration isolator. The vibration isolator located on the lower side of the carrier is fixed to a base, and the vibration isolator located on the upper side of the carrier is fixed to the equipment to be isolated. The present invention utilizes the vibration isolator and the fixing seat with a universal joint to enable the vibration isolator to rotate within a certain angle range, thereby meeting the vibration isolation requirements in different directions and realizing multi-directional vibration isolation of the equipment.

Description

Technical Field

[0001] The invention relates to a ship vibration isolation device, in particular to a ship vibration isolation device with multi-directional vibration isolation. Background Art

[0002] Vibration sources on ships primarily include vibrations from the ship's power equipment and external impacts. In recent years, ships have become larger and more sophisticated, significantly increasing the vibration intensity of onboard power equipment. This, in turn, places higher demands on vibration isolation for precision equipment. External shocks, such as wind and waves, and ship collisions, can also cause damage to equipment. These factors have led to increasingly stringent requirements for shock resistance and vibration isolation on modern ships. Equipment shock resistance and vibration isolation typically involve installing external vibration isolation devices to absorb the energy of shock vibrations. Marine vibration isolation systems have evolved over several generations, initially installing elastic supports between the power equipment and the hull, such as single-layer isolation devices. These devices later evolved into double-layer isolation devices and floating raft isolation devices. Floating raft isolation devices are large, making them difficult to place within limited spaces, and their heavy weight hinders lightweight ship design. Currently, double-layer isolation devices are more commonly used, but they often provide isolation in only one direction and cannot meet all-around vibration isolation requirements. Summary of the Invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a multi-directional vibration isolation device for ships, which can meet the vibration isolation requirements in different directions.

[0004] Technical solution: The multi-directional vibration isolation marine vibration isolation device described in the present invention includes a carrier and multiple vibration isolators. The multiple vibration isolators are fixed to the upper and lower sides of the carrier through a fixing seat with a universal joint, one end of the universal joint is fixed to the fixing seat, and the other end is fixed to the vibration isolator; the vibration isolator located on the lower side of the carrier is fixed on the base, and the vibration isolator located on the upper side of the carrier is fixed on the equipment to be isolated.

[0005] Furthermore, the fixing seat is provided with an angle adjustment locking mechanism for adjusting and locking the angle of the vibration isolator.

[0006] Furthermore, the fixing seat includes a second base plate, a circular sleeve is fixed on the second base plate, and a spherical sleeve is fixed on the circular sleeve; the angle adjustment locking mechanism includes an arc-shaped pad and a connecting rod, the arc-shaped pad is adapted to the spherical sleeve and is fixed to the outside of the spherical sleeve; one end of the universal joint is fixed to the second base plate, and the other end is vertically fixed to the connecting rod; the connecting rod passes outward through the spherical sleeve and the arc-shaped pad, and the protruding end of the connecting rod is fixed with an arc-shaped plate; the spherical sleeve and the arc-shaped pad are provided with holes for the connecting rod to swing up and down in a vertical plane; a row of second screw holes are provided on the arc-shaped pad, and a first screw hole is provided on the arc-shaped pad, and the first screw hole and the second screw hole are connected by screws; the second screw holes at different positions on the arc-shaped pad are used to realize the locking of the vibration isolator after adjustment at different angles.

[0007] Furthermore, a roller is provided on the connecting rod, and when the connecting rod swings up and down in a vertical plane, the roller rolls on the surface of the arc-shaped pad.

[0008] Furthermore, the second base plate is fixed to the carrier through second bolts.

[0009] Furthermore, the vibration isolator includes a first base plate and a spherical cover with an opening at the bottom. A horizontal fixing plate is fixed in the middle position inside the spherical cover. A first spring and a second spring are fixed on the upper and lower sides of the fixing plate respectively. The upper end of the first spring is fixed to the top of the inner wall of the spherical cover; a sleeve is fixed to the first base plate, the spherical cover is covered above the sleeve, and the lower end of the second spring is fixed in the sleeve; the other end of the universal joint has a screw hole, and the top of the spherical cover is fixed to the other end of the universal joint by a first bolt.

[0010] Furthermore, the spherical cover includes a spherical outer plate and a spherical inner plate, and a rubber cushion layer is provided between the spherical outer plate and the spherical inner plate.

[0011] Furthermore, the first base plate is fixed to the base or the equipment to be vibration-isolated by means of bolts.

[0012] In the above technical solution, the components are fixedly connected by bolts, which facilitates installation and disassembly.

[0013] Furthermore, the carrier includes an upper panel, a middle panel, and a lower panel. Elastic cells are placed between the upper and middle panels, and between the middle and lower panels. These cells are regular polygonal structures with a central cavity extending vertically through them. Made of rubber, these cells are constructed with a two-layered cellular structure and a cavity. This reduces weight while providing excellent vibration isolation, cushioning, and energy absorption against external vibrations and impacts.

[0014] Furthermore, any two parallel sides of the upper panel are provided with mutually adapted fitting strips for rapid assembly of the carriers. This technical solution facilitates rapid assembly and disassembly of multiple carriers.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0016] The present invention utilizes a vibration isolator and a universal joint mounting base, enabling the isolator to rotate within a certain angle range, thereby meeting vibration isolation requirements in different directions and achieving multi-directional vibration isolation for equipment. Furthermore, the modular structure of each component allows for mass production and rapid replacement of damaged components, ensuring high versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a multi-directional vibration isolation device for ships according to an embodiment of the present application;

[0018] Figure 2 This is a schematic structural diagram of the carrier in an embodiment of the present application;

[0019] Figure 3 This is a schematic structural diagram of a vibration isolator in an embodiment of the present application;

[0020] Figure 4 This is a schematic structural diagram of a fixing base in an embodiment of the present application;

[0021] Figure 5 It is a structural schematic diagram of the angle adjustment locking mechanism in an embodiment of the present application. DETAILED DESCRIPTION

[0022] Attachment Figures 1 to 5 The markup in is as follows:

[0023] 1, carrier; 1.1, upper panel; 1.2, lower panel; 1.3, middle panel; 1.4, first interlocking strip; 1.5, second interlocking strip; 1.6, elastic cell;

[0024] 2, vibration isolator; 2.1, first bolt; 2.2, spherical outer plate; 2.3, spherical inner plate; 2.4, rubber pad; 2.5, first spring; 2.6, second spring; 2.7, sphere; 2.8, fixing plate; 2.9, sleeve; 2.10, first bottom plate; 2.11, hole;

[0025] 3. Fixed seat; 3.1. Second base plate; 3.2. Second bolt; 3.3. Circular sleeve; 3.4. Spherical sleeve; 3.5. Universal joint; 3.6. Angle adjustment locking mechanism; 3.6.1. Connecting rod; 3.6.2. Roller; 3.6.3. Arc plate; 3.6.4. First screw hole; 3.6.5. Arc pad; 3.6.6. Second screw hole.

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] like Figure 1As shown, a multi-directional marine vibration isolation device includes a carrier 1 with a mounting base 3 fixed to each of the four corners of the upper and lower surfaces of the carrier 1. Each mounting base 3 is equipped with a vibration isolator 2. The vibration isolators 2 located on the lower side of the carrier 1 are fixed to a base, while the vibration isolators 2 located on the upper side of the carrier 1 are fixed to the equipment to be isolated. In actual application, the installation direction and number of vibration isolators 2 can be determined according to actual needs.

[0028] Combine Figure 2 The carrier 1 comprises an upper panel 1.1, a middle panel 1.3, and a lower panel 1.2. Elastic cells 1.6 are located between the upper and middle panels 1.1 and 1.3, and between the middle and lower panels 1.2. These cells are regular polygonal structures with a central cavity extending vertically through them. These cells are made of rubber. This structure reduces weight and provides excellent energy absorption in the event of an impact.

[0029] Furthermore, a first engaging strip 1.4 and a second engaging strip 1.5 are provided on any two opposing parallel sides of the upper panel 1.1. In this embodiment, the engaging strips are strip-shaped structures with grooves and protrusions. Multiple carriers 1 can be quickly assembled and tightly connected, ensuring high load stability when carrying large equipment.

[0030] Combine Figure 3 The vibration isolator 2 comprises a first base plate 2.10 and a spherical cover with an opening at the bottom. The first base plate 2.10 is provided with holes 2.11 and is bolted to a base or the equipment to be isolated. In this embodiment, the spherical cover comprises a spherical outer plate 2.2 and a spherical inner plate 2.3. A rubber pad 2.4 is provided between the outer and inner plates 2.2 and 2.3 to cushion external shocks and vibrations.

[0031] A horizontal fixing plate 2.8 is fixed in the center of the spherical cover. A sphere 2.7 is fixed to a hole in the center of fixing plate 2.8. A first spring 2.5 is fixed to the top of sphere 2.7, and a second spring 2.6 is fixed to the bottom of sphere 2.7. The top end of first spring 2.5 is fixed to the top of the inner wall of the spherical cover. A sleeve 2.9 is fixed to the first base plate 2.10. The spherical cover is covered by sleeve 2.9, and the lower end of second spring 2.6 is fixed to sleeve 2.9. Vibration isolator 2 utilizes springs to achieve effective vibration isolation.

[0032] Combine Figure 4 and Figure 5The fixed seat 3 includes a second base plate 3.1, a universal joint 3.5 and an angle adjustment locking mechanism 3.6. The second base plate 3.1 is fixed to the carrier 1 by a second bolt 3.2. The universal joint 3.5 has two fixed ends that can rotate relative to each other. It is a prior art and will not be described in detail here. A circular sleeve 3.3 is fixed on the second base plate 3.1, and a spherical sleeve 3.4 is fixed on the circular sleeve 3.3. The angle adjustment locking mechanism 3.6 includes an arc-shaped pad 3.6.5 and a connecting rod 3.6.1. The arc-shaped pad 3.6.5 is adapted to the spherical sleeve 3.4 and is fixed to the outside of the spherical sleeve 3.4. One end of the universal joint 3.5 is fixed to the second base plate 3.1, and the other end is vertically fixed to the connecting rod 3.6.1. The other end of the universal joint 3.5 has a screw hole, and the top of the spherical cover is fixed to the other end of the universal joint 3.5 by a first bolt 2.1.

[0033] The connecting rod 3.6.1 passes outward through the spherical sleeve 3.4 and the arc-shaped pad 3.6.5, and the arc-shaped plate 3.6.3 is fixed to the protruding end of the connecting rod 3.6.1. Holes are provided on the spherical sleeve 3.4 and the arc-shaped pad 3.6.5 for the connecting rod 3.6.1 to swing up and down in the vertical plane. The arc-shaped pad 3.6.5 is provided with a row of second screw holes 3.6.6, and the arc-shaped plate 3.6.3 is provided with first screw holes 3.6.4. The first screw holes 3.6.4 and the second screw holes 3.6.6 are connected to each other by screws. The second screw holes 3.6.6 at different positions on the arc-shaped pad 3.6.5 are used to achieve locking of the vibration isolator 2 after adjustment to different angles. In addition, a roller 3.6.2 is provided on the connecting rod 3.6.1. When the connecting rod 3.6.1 swings up and down in the vertical plane, the roller 3.6.2 rolls on the surface of the arc-shaped pad 3.6.5.

Claims

1. A multi-directional vibration isolation device for ships, characterized in that: The invention comprises a carrier (1) and a plurality of vibration isolators (2), wherein the plurality of vibration isolators (2) are fixed to the upper and lower sides of the carrier (1) via a fixing seat (3) having a universal joint (3.5), one end of the universal joint (3.5) is fixed to the fixing seat (3), and the other end is fixed to the vibration isolator (2); the vibration isolator (2) located on the lower side of the carrier (1) is fixed to the base, and the vibration isolator (2) located on the upper side of the carrier (1) is fixed to the equipment to be isolated; An angle adjustment locking mechanism (3.6) for adjusting and locking the angle of the vibration isolator (2) is provided on the fixing seat (3); The vibration isolator (2) includes a first base plate (2.10) and a spherical cover with an opening at the bottom. A horizontal fixed plate (2.8) is fixed in the middle of the spherical cover. A first spring (2.5) and a second spring (2.6) are fixed on the upper and lower sides of the fixed plate (2.8), respectively. The upper end of the first spring (2.5) is fixed to the top of the inner wall of the spherical cover. A sleeve (2.9) is fixed on the first base plate (2.10). The spherical cover is covered above the sleeve (2.9). The lower end of the second spring (2.6) is fixed in the sleeve (2.9). The other end of the universal joint (3.5) has a screw hole. The top of the spherical cover is fixed to the other end of the universal joint (3.5) through a first bolt (2.1). The spherical cover comprises a spherical outer plate (2.2) and a spherical inner plate (2.3), and a rubber cushion layer (2.4) is provided between the spherical outer plate (2.2) and the spherical inner plate (2.3).

2. The marine vibration isolation device according to claim 1, characterized in that: The fixing seat (3) includes a second base plate (3.1), a circular sleeve (3.3) is fixed on the second base plate (3.1), and a spherical sleeve (3.4) is fixed on the circular sleeve (3.3); the angle adjustment locking mechanism (3.6) includes an arc-shaped pad (3.6.5) and a connecting rod (3.6.1), the arc-shaped pad (3.6.5) is adapted to the spherical sleeve (3.4) and is fixed to the outside of the spherical sleeve (3.4); one end of the universal joint (3.5) is fixed to the second base plate (3.1), and the other end is vertically fixedly connected to the connecting rod (3.6.1); the connecting rod (3.6.1) passes through the spherical sleeve (3.4) and the arc-shaped pad (3.6.5) outward. .6.5), an arc plate (3.6.3) is fixed to the protruding end of the connecting rod (3.6.1); holes are provided on the spherical sleeve (3.4) and the arc pad (3.6.5) for the connecting rod (3.6.1) to swing up and down in a vertical plane; a row of second screw holes (3.6.6) are provided on the arc pad (3.6.5), a first screw hole (3.6.4) is provided on the arc plate (3.6.3), and the first screw hole (3.6.4) and the second screw hole (3.6.6) are connected by screws; the second screw holes (3.6.6) at different positions on the arc pad (3.6.5) are used to realize the locking of the vibration isolator (2) after adjustment at different angles.

3. The marine vibration isolation device according to claim 2, characterized in that: A roller (3.6.2) is provided on the connecting rod (3.6.1). When the connecting rod (3.6.1) swings up and down in a vertical plane, the roller (3.6.2) rolls on the surface of the arc-shaped pad (3.6.5).

4. The marine vibration isolation device according to claim 2, characterized in that: The second base plate (3.1) is fixed to the carrier (1) via a second bolt (3.2).

5. The marine vibration isolation device according to claim 1, characterized in that: The first base plate (2.10) is fixed to the base or the equipment to be isolated by bolts.

6. The marine vibration isolation device according to any one of claims 1 to 5, characterized in that: The carrier (1) comprises an upper panel (1.1), an intermediate panel (1.3) and a lower panel (1.2); elastic cells (1.6) are filled between the upper panel (1.1) and the intermediate panel (1.3), and between the intermediate panel (1.3) and the lower panel (1.2); the elastic cells (1.6) are regular polygonal structures with a cavity extending vertically through the center, and are made of rubber material.

7. The marine vibration isolation device according to claim 6, characterized in that: Mutually adapted fitting strips are provided on any two opposite parallel sides of the upper panel (1.1) for quickly splicing the carriers (1).

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