Marine transmission system damping device

Abstract

The utility model provides a kind of marine transmission system damping device, belong to damping device field, including damping component and installation component;Damping component includes base;The utility model: first connecting plate is hingedly installed in the inner wall both sides of base, second connecting plate is hingedly installed in the inner wall both sides of other end, base top is equipped with bearing frame, bearing frame is connected with the transmission part of ship body, when the transmission part of ship body vibrates, it is passed through bearing frame and is transferred to first connecting plate and second connecting plate, shock absorber is installed between the inboard of first connecting plate and the one end of base, air spring is installed between the other end of base and second connecting plate, first connecting plate and second connecting plate middle part are X-shaped and are crossed and are hingedly connected, and air spring and shock absorber play the role of attenuating vibration, compared with traditional rubber shock absorber, the structure design has sustained attenuation force when facing high-frequency vibration, effectively reduce vibration, and load is big to satisfy use demand.

Description

Technical Field

[0001] This utility model relates to the field of vibration reduction devices, specifically a vibration reduction device for a marine transmission system. Background Technology

[0002] Vibrations are inevitable in ship propulsion systems during operation, such as the excitation force generated by the main engine and the pulsating force generated by the propeller in the wake field at the stern. These excitations are transmitted to the hull structure through the mounting base, bearings and their supports, thereby inducing hull structure vibration and causing low-frequency underwater radiated noise. In terms of vibration and sound radiation, the transmission parts of the ship's power system and hull are the direct power source for driving the main shaft and propeller. During operation, the vibration generated by the transmission parts of the hull is transmitted to the hull through the base, exciting the hull to vibrate and radiating noise underwater. Traditional rubber vibration dampers have poor vibration reduction effect and are insufficient for attenuating high-frequency vibrations such as gear meshing vibration. Marine transmission systems are heavy, and the rated load of traditional vibration dampers is prone to permanent deformation of the elastic body, resulting in rapid degradation of vibration reduction performance. Utility Model Content

[0003] The purpose of this invention is to provide a vibration damping device for marine transmission systems to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a vibration damping device for a marine transmission system, comprising a vibration damping component and a mounting component; The vibration damping assembly includes a base, with a first connecting plate hinged to both sides of the inner wall of one end of the base, and a second connecting plate hinged to both sides of the inner wall of the other end of the base. The first and second connecting plates are connected in an X-shape at their middle parts. A support frame is provided on the top of the base. The top of the first connecting plate is hinged to one end of the bottom of the support frame, and the top of the second connecting plate is slidably installed on the other end of the bottom of the support frame. Two sets of vibration dampers are hinged to one end of the base, with one end of each set of vibration dampers hinged to the inner side of the second connecting plate. An air spring is fixedly installed at the other end of the base, with the top of the air spring fixedly installed to the inner side of the first connecting plate. The mounting assembly includes mounting bases fixedly mounted around the top of the support frame. The top of the mounting base has mounting holes, and mounting bolts are inserted into the mounting holes. Locking nuts are threaded onto the surface of the mounting bolts. The transmission part of the hull is mounted on the top of the support frame via the mounting bases.

[0005] As a preferred embodiment of the present invention: the shock absorber is composed of a damper, the surface of the damper is provided with a threaded groove, the surface of the threaded groove is threaded with an adjustment knob, and a damping spring is installed between the front end of the damper and the adjustment knob.

[0006] As a preferred embodiment of the present invention: the air spring is composed of a rubber air bladder, a piston is installed inside the rubber air bladder, a top cover plate is installed on the top of the piston, and the top cover plate is connected to the inner side of the first connecting plate.

[0007] As a preferred embodiment of this utility model: an air inlet connector is fixedly installed at the bottom of the rubber airbag, and the air inlet connector is connected to an external air storage cylinder.

[0008] As a preferred embodiment of this utility model: slide rails are installed on both sides of the bottom of the support frame, and a movable wheel is rotatably installed on the top of the second connecting plate, the movable wheel rolling inside the slide rail.

[0009] As a preferred embodiment of this utility model, the slide rail is provided with limiting blocks at both ends.

[0010] Compared with the prior art, the beneficial effects of this utility model are: (1) A first connecting plate is hinged to both sides of the inner wall of the base, and a second connecting plate is hinged to both sides of the inner wall of the other end. A support frame is provided on the top of the base. The support frame is connected to the transmission part of the hull. When the transmission part of the hull vibrates, it is transmitted to the first connecting plate and the second connecting plate through the support frame. A damper is installed between the inner side of the first connecting plate and one end of the base. An air spring is installed between the other end of the base and the second connecting plate. The first connecting plate and the second connecting plate are X-shaped and cross-hinged in the middle. The damper and the air spring play a role in damping vibration. Compared with the traditional rubber damper, this structure design has a continuous damping force when facing high frequency vibration, effectively reducing vibration, and the load is large enough to meet the use requirements. (2) The top of the mounting base is provided with mounting holes, and mounting bolts are inserted inside the mounting holes. When the bottom of the transmission part of the hull is placed on the surface of the mounting base, it is fixedly connected by the locking nut on the surface of the mounting bolt, so that the transmission part of the hull is fixedly installed on the top of the support frame. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the vibration damping component structure of this utility model; Figure 3 This is a schematic diagram of the damper structure of this utility model; Figure 4 This is a schematic diagram of the air spring structure of this utility model.

[0012] In the diagram: 1. Vibration damping assembly; 101. Base; 102. First connecting plate; 103. Second connecting plate; 104. Bearing frame; 105. Vibration damper; 1051. Damper; 1052. Threaded groove; 1053. Adjustment knob; 1054. Damping spring; 106. Air spring; 1061. Rubber air bladder; 1062. Piston; 1063. Top cover plate; 2. Mounting assembly; 21. Mounting base; 22. Mounting hole; 23. Mounting bolt; 24. Locking nut; 3. Air inlet connector; 4. Slide rail; 5. Playing wheel; 6. Limit block. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] Please see Figure 1-4 A vibration damping device for a marine transmission system includes: a vibration damping component 1 and a mounting component 2; Please see Figure 1 , Figure 2 The vibration damping assembly 1 includes a base 101. A first connecting plate 102 is hinged to both sides of the inner wall of one end of the base 101, and a second connecting plate 103 is hinged to both sides of the inner wall of the other end of the base 101. The first connecting plate 102 and the second connecting plate 103 are connected in an X-shape at the middle. A support frame 104 is provided on the top of the base 101. The top of the first connecting plate 102 is hinged to one end of the bottom of the support frame 104, and the top of the second connecting plate 103 is slidably installed on the other end of the bottom of the support frame 104. Two sets of vibration dampers 105 are hinged to one end of the base 101, and one end of each set of vibration dampers 105 is hinged to the inner side of the second connecting plate 103. An air spring 106 is fixedly installed on the other end of the base 101, and the top of the air spring 106 is fixedly installed on the inner side of the first connecting plate 102.

[0015] In practical use: A first connecting plate 102 is hinged to both sides of the inner wall of the base 101, and a second connecting plate 103 is hinged to both sides of the inner wall of the other end. A support frame 104 is provided on the top of the base 101. The support frame 104 is connected to the transmission part of the hull. When the transmission part of the hull vibrates, it is transmitted to the first connecting plate 102 and the second connecting plate 103 through the support frame 104. A vibration damper 105 is installed between the inner side of the first connecting plate 102 and one end of the base 101. An air spring 106 is installed between the other end of the base 101 and the second connecting plate 103. The first connecting plate 102 and the second connecting plate 103 are X-shaped and cross-hinged in the middle. The vibration damper 105 and the air spring 106 play a role in damping vibration. Compared with the traditional rubber vibration damper 105, this structural design has a continuous damping force when facing high-frequency vibration, effectively reducing vibration, and the large load meets the use requirements.

[0016] Please see Figure 1 , Figure 2 The mounting component 2 includes a mounting base 21 fixedly mounted around the top of the support frame 104. The top of the mounting base 21 has a mounting hole 22, and a mounting bolt 23 is inserted inside the mounting hole 22. A locking nut 24 is threaded onto the surface of the mounting bolt 23. The transmission part of the hull is mounted on the top of the support frame 104 through the mounting base 21.

[0017] In practical use: The top of the mounting base 21 has a mounting hole 22, and a mounting bolt 23 is inserted inside the mounting hole 22. When the bottom of the transmission part of the hull is placed on the surface of the mounting base 21, it is fixedly connected by the locking nut 24 on the surface of the mounting bolt 23, so that the transmission part of the hull is fixedly installed on the top of the support frame 104.

[0018] Please see Figure 3 The damper 105 is composed of a damper 1051. The surface of the damper 1051 is provided with a threaded groove 1052. An adjustment knob 1053 is threadedly connected to the surface of the threaded groove 1052. A damping spring 1054 is installed between the front end of the damper 1051 and the adjustment knob 1053.

[0019] In practical use: The shock absorber 105 is composed of a damper 1051. The surface of the damper 1051 is provided with a threaded groove 1052. The surface of the threaded groove 1052 is threadedly connected to an adjustment knob 1053. By rotating the adjustment knob 1053, the damping spring 1054 is driven to adjust and control the pre-compression and stiffness output, so as to adjust the appropriate support force according to the operating conditions of the transmission part of the hull.

[0020] Please see Figure 4The air spring 106 is composed of a rubber air bladder 1061. A piston 1062 is installed inside the rubber air bladder 1061. An upper cover plate 1063 is installed on the top of the piston 1062. The upper cover plate 1063 is connected to the inner side of the first connecting plate 102.

[0021] In practical use: the air spring 106 is composed of a rubber air bladder 1061, a piston 1062 is installed inside the rubber air bladder 1061, and an upper cover plate 1063 is installed on the top of the piston 1062. The upper cover plate 1063 is connected to the inner side of the first connecting plate 102, so that the vibration generated by the operation of the transmission part of the hull is buffered and absorbed by the rubber air bladder 1061.

[0022] Please see Figure 4 An air inlet connector 3 is fixedly installed at the bottom of the rubber airbag 1061, and the air inlet connector 3 is connected to an external air storage cylinder.

[0023] In practical use: The bottom of the rubber airbag 1061 is equipped with an air inlet connector 3, which is connected to the air inlet connector 3 through an external air storage cylinder. This facilitates the adjustment of the internal pressure of the rubber airbag 1061, achieves self-adaptive stiffness, and thus adapts to the vibration reduction requirements of different working conditions.

[0024] Please see Figure 2 The bottom of the support frame 104 is equipped with slide rails 4 on both sides. The top of the second connecting plate 103 is rotatably mounted with a movable wheel 5. The movable wheel 5 rolls inside the slide rail 4. Limiting blocks 6 are provided at both ends of the slide rail 4.

[0025] In practical use: a slide rail 4 is installed at the other end of the bottom of the support frame 104. The second connecting plate 103 rolls inside the slide rail 4 through the movable wheel 5 at the top, so that the amplitude change of the support frame 104 relative to the base 101 is satisfied when the transmission part of the ship receives vibration. The limiting blocks 6 provided at both ends of the slide rail 4 play a limiting role to prevent the movable wheel 5 from detaching from both ends of the slide rail 4.

[0026] A first connecting plate 102 is hinged to both sides of the inner wall of the base 101, and a second connecting plate 103 is hinged to both sides of the inner wall of the other end. A support frame 104 is provided on the top of the base 101. The support frame 104 is connected to the transmission part of the hull. When the transmission part of the hull vibrates, it is transmitted to the first connecting plate 102 and the second connecting plate 103 through the support frame 104. A vibration damper 105 is installed between the inner side of the first connecting plate 102 and one end of the base 101. An air spring 106 is installed between the other end of the base 101 and the second connecting plate 103. The first connecting plate 102 and the second connecting plate 103 are cross-hinged in an X shape in the middle. The vibration damper 105 and the air spring 106 play a role in damping vibration. Compared with the traditional rubber vibration damper 105, this structural design has a continuous damping force when facing high frequency vibration, effectively reducing vibration, and the large load meets the use requirements.

[0027] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A vibration damping device for a marine transmission system, characterized in that, include: A vibration damping assembly (1) includes a base (101). A first connecting plate (102) is hinged to both sides of the inner wall of one end of the base (101), and a second connecting plate (103) is hinged to both sides of the inner wall of the other end of the base (101). The first connecting plate (102) and the second connecting plate (103) are hinged together in an X-shape at their midpoints. A support frame (104) is provided on the top of the base (101), and the top of the first connecting plate (102) is hinged to... The top of the second connecting plate (103) is slidably mounted on the bottom of the support frame (104) at one end, and two sets of shock absorbers (105) are hinged to one end of the base (101). One end of each set of shock absorbers (105) is hinged to the inside of the second connecting plate (103). An air spring (106) is fixedly mounted on the other end of the base (101). The top of the air spring (106) is fixedly mounted on the inside of the first connecting plate (102). The mounting assembly (2) includes a mounting base (21) fixedly mounted around the top of the support frame (104). The top of the mounting base (21) is provided with a mounting hole (22). A mounting bolt (23) is inserted inside the mounting hole (22). A locking nut (24) is threaded onto the surface of the mounting bolt (23). The hull, the transmission part of which is mounted on top of the support frame (104) via a mounting base (21).

2. The vibration damping device according to claim 1, characterized in that: The damper (105) is composed of a damper (1051). The surface of the damper (1051) is provided with a threaded groove (1052). An adjustment knob (1053) is threadedly connected to the surface of the threaded groove (1052). A damping spring (1054) is installed between the front end of the damper (1051) and the adjustment knob (1053).

3. The vibration damping device according to claim 1, characterized in that: The air spring (106) is composed of a rubber air bladder (1061), and a piston (1062) is installed inside the rubber air bladder (1061). A top cover plate (1063) is installed on the top of the piston (1062), and the top cover plate (1063) is connected to the inner side of the first connecting plate (102).

4. The vibration damping device according to claim 3, characterized in that: An air inlet connector (3) is fixedly installed at the bottom of the rubber airbag (1061), and the air inlet connector (3) is connected to an external air storage cylinder.

5. The vibration damping device according to claim 1, characterized in that: The bottom of the support frame (104) is equipped with slide rails (4) on both sides, and the top of the second connecting plate (103) is rotatably equipped with a movable wheel (5), which rolls inside the slide rail (4).

6. The vibration damping device according to claim 5, characterized in that: The slide rail (4) is provided with limit blocks (6) at both ends.

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