Lightweight marine engine damper based on topology optimization

Abstract

The utility model relates to marine equipment damping technology field, concretely is a kind of lightweight marine main engine damper based on topological optimization, including lower connecting plate, the lower connecting plate top is equipped with connecting pipe, the elastic layer is slidably connected in the connecting pipe inside, the elastic layer top is closely combined with damping interlayer, the damping interlayer is equipped with several honeycomb through-hole, the damping interlayer top is closely combined with reinforcing plate, the reinforcing plate top is fixed with several reinforcing bars, several The reinforcing bars top is fixed with upper connecting plate, the reinforcing plate bottom is also equipped with connecting disc, the connecting disc bottom is fixed with several connecting shafts, the connecting pipe top is fixed with locating disc, each The connecting shaft is slidably connected with the through-hole on the locating disc;The utility model is through topological optimization and composite material application, effectively reduce the weight of entire damper, because composite material has the characteristics of high specific strength, high specific modulus.

Description

Technical Field

[0001] This utility model belongs to the field of marine equipment vibration reduction technology, specifically a lightweight marine main engine vibration damper based on topology optimization. Background Technology

[0002] Marine main engines are the core equipment of a ship's propulsion system, and the vibrations they generate during operation can seriously affect the ship's comfort, safety, and equipment lifespan. Vibration dampers, as key components for suppressing the transmission of main engine vibrations, directly impact vibration reduction effectiveness.

[0003] However, most existing shock absorbers are metal springs or cast iron bases, which increases the ship's load and affects fuel economy; traditional structural designs do not fully consider material distribution optimization, resulting in redundant mass; at the same time, most existing shock absorbers are one-piece structures, making the entire device difficult to disassemble and replace. In order to solve the above problems, this utility model designs a lightweight marine main engine shock absorber based on topology optimization. Utility Model Content

[0004] In view of the above situation and to overcome the shortcomings of the prior art, this utility model provides a lightweight marine main engine vibration damper based on topology optimization, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lightweight marine main engine vibration damper based on topology optimization, comprising a lower connecting plate, a support plate fixed to the top of the lower connecting plate by a connecting strip, vibration damping holes on the connecting strip, a connecting pipe on the top of the support plate, an elastic layer slidably connected inside the connecting pipe, a vibration damping interlayer tightly fitted to the top of the elastic layer, a plurality of honeycomb through holes on the vibration damping interlayer, a reinforcing plate tightly fitted to the top of the vibration damping interlayer, a plurality of reinforcing ribs fixed to the top of the reinforcing plate, an upper connecting plate fixed to the top of the plurality of reinforcing ribs, a connecting plate at the bottom of the reinforcing plate, a plurality of connecting shafts fixed to the bottom of the connecting plate, a positioning plate fixed to the top of the connecting pipe, and each connecting shaft slidably connected to a through hole on the positioning plate.

[0006] Preferably, the lower connecting plate and the support plate are provided with a plurality of connecting holes, and the support plate and the lower connecting plate are fastened to the hull base by bolts passing through the connecting holes, and the reinforcing plate and the upper connecting plate are fastened to the main engine of the ship by bolts.

[0007] Preferably, a support pipe is fixed to the top of the support plate, a lower flange is fixed to the top of the support pipe, and an upper flange is fastened to the top of the lower flange by connecting bolts. The upper flange is fixedly connected to the connecting pipe on its top.

[0008] Preferably, the connecting pipe has a plurality of positioning rails inside, each positioning rail has a positioning block slidably connected inside, each positioning block is fixedly connected to the vibration damping interlayer inside, and the upper end of each positioning block is slidably connected to the positioning groove inside the positioning pipe.

[0009] Preferably, a positioning tube is fixed to the bottom of the reinforcing plate, the bottom of the positioning tube is fixedly connected to the connecting plate, the lower end of the connecting shaft is threaded, a positioning nut is engaged with the lower end of the connecting shaft, and the top of the positioning nut is tightly fitted to the positioning plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are: (1) This utility model uses vibration damping holes to reduce vibration while ensuring the rigidity of the entire vibration damper, thereby ensuring the stability of the entire vibration damper. Through topology optimization and the application of composite materials, the weight of the entire vibration damper is effectively reduced. Due to the high specific strength and high specific modulus of composite materials, combined with topology optimization design, the entire vibration damper is lightweight while having a higher load-bearing capacity. At the same time, the structure is more reasonable, giving full play to the performance advantages of materials, thereby improving the stability of the entire vibration damper. This vibration damper is easy to disassemble and easy to assemble, thereby increasing the application range of the entire vibration damper. It is also convenient to replace, thereby increasing the service life of the vibration damper and saving resources.

[0011] (2) This utility model effectively improves the damping performance of the entire shock absorber through the damping interlayer and elastic layer, which can better suppress the transmission of main engine vibration, improve the comfort and safety of the ship, and at the same time, the stability of the damping interlayer can be guaranteed due to the positioning block and positioning rail, thereby ensuring the stability of the entire shock absorber.

[0012] (3) This utility model uses a positioning plate to position the connecting shaft. When the main unit is not vibrating, the positioning nut is in close contact with the positioning plate, thus ensuring the stability of the entire vibration damper. When the main unit vibrates, the connecting shaft and the positioning plate are slidably connected, which facilitates the deformation of the vibration damping interlayer and the elastic layer, thus ensuring the vibration damping effect and achieving the purpose of noise reduction. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] In the attached diagram: Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a top view of the entire utility model; Figure 3This is a schematic diagram of the top of the connecting pipe of this utility model; Figure 4 This is a cross-sectional schematic diagram of the reinforcing rib of this utility model; Figure 5 This is a schematic cross-sectional view of the present invention; Figure 6 This is a schematic diagram of the positioning rail of this utility model.

[0015] In the diagram: 1-Lower connecting plate; 2-Lower flange; 3-Connecting pipe; 4-Vibration damping interlayer; 5-Upper connecting plate; 6-Connecting disc; 101-Connecting hole; 102-Vibration damping hole; 103-Support plate; 104-Supporting pipe; 105-Connecting strip; 201-Connecting bolt; 202-Upper flange; 301-Positioning rail; 401-Elastic layer; 402-Positioning block; 501-Reinforcing plate; 502-Reinforcing rib; 503-Positioning pipe; 504-Positioning groove; 601-Connecting shaft; 602-Positioning disc; 603-Positioning nut. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Example 1, by Figures 1-2 , Figures 4-5The present invention includes a lower connecting plate 1, which is made of high-strength aluminum alloy and supports the entire vibration damper. A support plate 103 is fixed to the top of the lower connecting plate 1 via a connecting strip 105. Both the support plate 103 and the connecting strip 105 are made of high-strength aluminum alloy. The support plate 103 supports the support tube 104, and the connecting strip 105 connects the lower connecting plate 1 and the support plate 103. The connecting strip 105 is provided with vibration damping holes 102, which dampen vibrations while ensuring the steel strength of the entire vibration damper. To ensure the stability of the entire vibration damper, a connecting pipe 3 is provided at the top of the support plate 103. The connecting pipe 3 is made of carbon fiber reinforced composite material and is deformable. The design of the connecting pipe 3 is optimized based on topology optimization results. The layup angle, sequence, and thickness of different regions are adjusted according to the stress characteristics. An elastic layer 401 is slidably connected inside the connecting pipe 3. The elastic layer 401 is made of rubber or polyurethane material and is used for vibration damping. A vibration damping interlayer 4 is tightly attached to the top of the elastic layer 401. The vibration damping interlayer 4 has several honeycomb structures. The vibration damping interlayer 4 is made of aluminum or aramid paper. A reinforcing plate 501, made of high-strength aluminum alloy, is tightly fitted to the top of the vibration damping interlayer 4. Several reinforcing ribs 502, also made of high-strength aluminum alloy, are fixed to the top of the reinforcing plate 501. These ribs are topology-optimized and distributed in key stress areas of the composite material shell. An upper connecting plate 5, also made of high-strength aluminum alloy, is fixed to the top of each reinforcing rib 502. The upper connecting plate 5, the reinforcing plate 501, and the support... The surfaces of the support plate 103 and the lower connecting plate 1 are treated with anti-corrosion coating. The bottom of the reinforcing plate 501 is also provided with a connecting plate 6. The connecting plate 6 is made of alloy material. Several connecting shafts 601 are fixed at the bottom of the connecting plate 6. The connecting shafts 601 are made of alloy material and are used to position the connecting plate 6. The top of the connecting pipe 3 is fixed with a positioning plate 602. The positioning plate 602 is made of carbon fiber reinforced composite material and is used to position the connecting shafts 601. Each connecting shaft 601 is slidably connected to the through hole on the positioning plate 602.

[0018] Example 2, based on Example 1, combined with... Figure 3 , Figure 6The lower connecting plate 1 and the support plate 103 are provided with a plurality of connecting holes 101. The support plate 103 and the lower connecting plate 1 are fastened to the hull base by bolts passing through the connecting holes 101. The reinforcing plate 501 and the upper connecting plate 5 are fastened to the main engine by bolts. A support pipe 104 is fixed to the top of the support plate 103. The support pipe 104 is made of high-strength aluminum alloy and is used to position the lower flange 2. The lower flange 2 is fixed to the top of the support pipe 104. The lower flange 2 is made of high-strength aluminum alloy. An upper flange 202 is fastened to the top of the lower flange 2 by connecting bolts 201. The upper flange 202 is made of carbon fiber reinforced composite material. The upper flange 202 is fixedly connected to the connecting pipe 3 on its top. The connecting pipe 3 is provided with a plurality of positioning rails 301 inside. Positioning rail 301 is used to position the positioning block 402. Each positioning rail 301 has a positioning block 402 slidably connected inside. The positioning block 402 is made of aluminum or aramid paper. Each positioning block 402 is fixedly connected to the vibration damping interlayer 4 inside it. The upper end of each positioning block 402 is slidably connected to the positioning groove 504 inside the positioning tube 503. The positioning groove 504 is used to position the positioning block 402. The bottom of the reinforcing plate 501 is fixedly connected to the positioning tube 503. The positioning tube 503 is made of high-strength aluminum alloy. The positioning tube 503 is used to connect the reinforcing plate 501 and the connecting plate 6. The bottom of the positioning tube 503 is fixedly connected to the connecting plate 6. The lower end of the connecting shaft 601 is threaded. The lower end of the connecting shaft 601 is engaged with the positioning nut 603. The top of the positioning nut 603 is tightly fitted to the positioning plate 602. When using this vibration damper, the operator secures the lower connecting plate 1 to the hull base using bolts. Then, the operator fixes the lower flange 2 and the upper flange 202 using connecting bolts 201. Next, the operator places the elastic layer 401 inside the connecting pipe 3. Then, the operator inserts the vibration damping interlayer 4 into the connecting pipe 3 using the positioning rail 301 and positioning block 402. Next, the operator inserts the vibration damping interlayer 4 into the positioning pipe 503 according to the corresponding positioning groove 504. Finally, the operator inserts the connecting shaft 601 into the through hole of the positioning plate 602. Then, the operator tightens the positioning nut 603, so that the connecting shaft 601 can only slide downwards. Finally, the operator secures the upper connecting plate... 5. The device is fixedly connected to the main unit, thus completing the fixing of the entire vibration damper. When the main unit starts to vibrate, the force generated by the vibration is evenly distributed on the reinforcing plate 501 due to the action of the reinforcing rib 502, thereby causing the positioning tube 503 to rise and fall, and thus causing the connecting plate 6 to rise and fall. At this time, the vibration damping interlayer 4 and the elastic layer 401 can achieve vibration damping. At the same time, the connecting strip 105 on the vibration damping hole 102 can provide supplementary vibration damping, thereby ensuring the vibration damping effect and reducing noise. When the vibration damping interlayer 4 and the elastic layer 401 are damaged, the operator only needs to unscrew the positioning nut 603 to detach the vibration damping interlayer 4 and the elastic layer 401 from the connecting tube 3, thereby facilitating replacement by the operator and improving the service life of the vibration damper.

[0019] The working process of this utility model is as follows: When using this vibration damper, the operator uses bolts to secure the lower connecting plate 1 to the hull base. At this time, the operator uses connecting bolts 201 to fix the lower flange 2 and the upper flange 202. The operator then places the elastic layer 401 inside the connecting pipe 3. The operator then uses the positioning rail 301 and the positioning block 402 to insert the vibration damping interlayer 4 into the connecting pipe 3. The operator then inserts the vibration damping interlayer 4 into the positioning pipe 503 according to the corresponding positioning groove 504. The operator then inserts the connecting shaft 601 into the through hole of the positioning plate 602. At this time, the operator tightens the positioning nut 603, so that the connecting shaft 601 can only slide downwards. The operator then uses bolts to... The upper connecting plate 5 is fixedly connected to the main unit, thus completing the fixing of the entire vibration damper. When the main unit starts to vibrate, the force generated by the vibration is evenly distributed on the reinforcing plate 501 due to the action of the reinforcing rib 502, thereby causing the positioning tube 503 to rise and fall, and thus causing the connecting plate 6 to rise and fall. At this time, the vibration damping interlayer 4 and the elastic layer 401 can achieve vibration damping. At the same time, the connecting strip 105 on the vibration damping hole 102 can provide supplementary vibration damping, thereby ensuring the vibration damping effect and reducing noise. When the vibration damping interlayer 4 and the elastic layer 401 are damaged, the operator only needs to unscrew the positioning nut 603 to detach the vibration damping interlayer 4 and the elastic layer 401 from the connecting tube 3, thereby facilitating replacement by the operator and improving the service life of the vibration damper.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight marine main engine vibration damper based on topology optimization, characterized in that: Includes a lower connecting plate (1), the top of which is fixed with a support plate (103) via a connecting strip (105). The connecting strip (105) has vibration damping holes (102). The top of the support plate (103) has a connecting pipe (3). An elastic layer (401) is slidably connected inside the connecting pipe (3). A vibration damping interlayer (4) is tightly fitted to the top of the elastic layer (401). The vibration damping interlayer (4) has several honeycomb through holes. The top of the vibration damping interlayer (4) is tightly fitted. A reinforcing plate (501) is tightly fitted together. Several reinforcing ribs (502) are fixed on the top of the reinforcing plate (501). An upper connecting plate (5) is fixed on the top of the several reinforcing ribs (502). A connecting plate (6) is also provided at the bottom of the reinforcing plate (501). Several connecting shafts (601) are fixed at the bottom of the connecting plate (6). A positioning plate (602) is fixed on the top of the connecting pipe (3). Each connecting shaft (601) is slidably connected to the through hole on the positioning plate (602).

2. The lightweight marine main engine vibration damper based on topology optimization according to claim 1, characterized in that: The lower connecting plate (1) and the support plate (103) are provided with a plurality of connecting holes (101). The support plate (103) and the lower connecting plate (1) are fastened to the hull base by bolts passing through the connecting holes (101). The reinforcing plate (501) and the upper connecting plate (5) are fastened to the main engine of the ship by bolts.

3. A lightweight marine main engine vibration damper based on topology optimization according to claim 2, characterized in that: The support plate (103) is fixed with a support pipe (104) at the top, and a lower flange (2) is fixed with the top of the support pipe (104). An upper flange (202) is fastened to the top of the lower flange (2) by connecting bolts (201). The upper flange (202) is fixedly connected to the connecting pipe (3) at its top.

4. A lightweight marine main engine vibration damper based on topology optimization according to claim 3, characterized in that: The connecting pipe (3) is provided with a number of positioning rails (301), and each positioning rail (301) is slidably connected with a positioning block (402). Each positioning block (402) is fixedly connected to the vibration damping interlayer (4) inside it, and the upper end of each positioning block (402) is slidably connected to the positioning groove (504) inside the positioning pipe (503).

5. A lightweight marine main engine vibration damper based on topology optimization according to claim 1, characterized in that: The bottom of the reinforcing plate (501) is fixed with a positioning tube (503), the bottom of the positioning tube (503) is fixedly connected to the connecting plate (6), the lower end of the connecting shaft (601) is threaded, the lower end of the connecting shaft (601) is engaged with a positioning nut (603), and the top of the positioning nut (603) is tightly fitted to the positioning plate (602).

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