Height-adjustable vibration damping device for ship bearing bases

Abstract

The present invention discloses a height-adjustable ship bearing base vibration damping device, comprising an upper base plate, a lower base plate, a plurality of connecting members, a plurality of height-adjusting members, and a plurality of first elastic members, wherein one end of each connecting member passes through the upper base plate and is fixedly connected to the lower base plate; each height-adjusting member is cooperatively connected to the connecting member, the top of the height-adjusting member abuts against the upper base plate, and the distance between the upper base plate and the lower base plate is adjusted by adjusting the position of the height-adjusting member on the connecting member; the first elastic member is sleeved on the outside of the connecting member, and the two ends of the first elastic member abut against the upper base plate and the lower base plate respectively. The present invention solves the technical problem that the existing ship shafting bearing installation does not have the adjustment capability, resulting in poor consistency in the bearing installation height, uneven bearing force, and thus affecting the safety and reliability of the entire shafting.

Description

Technical Field

[0001] The present invention relates to the technical field of ship shafting bearing vibration damping devices, and in particular to a ship bearing base vibration damping device with adjustable height. Background Art

[0002] The installation of ship shafting bearings places stringent requirements on height consistency, a crucial requirement that directly impacts the uniformity of bearing force distribution. Uneven bearing force distribution can lead to bearing damage or performance degradation, ultimately impacting the efficiency and service life of the entire ship's shafting system. However, due to the complexity of ship structures, deviations in bearing installation height are often difficult to completely eliminate. Therefore, bearing installation requires a certain degree of adjustability to accommodate this inevitable deviation. This adjustability is crucial to ensuring uniform bearing force distribution and improving the safety and reliability of the shafting system.

[0003] However, existing ship shafting bearing mounts generally lack adjustment capabilities, limiting their ability to accommodate height deviations in the main engine installation. This not only impacts bearing performance but can also threaten the safety and reliability of the entire ship shafting system. Therefore, it is necessary to design a height-adjustable ship bearing base vibration damping device that allows precise adjustment of the bearing base height to accommodate height deviations in the bearing installation, ensuring uniform bearing force and thus improving the safety and reliability of the ship shafting system. Summary of the Invention

[0004] The purpose of the present invention is to propose a height-adjustable ship bearing base vibration damping device to solve the technical problem that the existing ship shaft system bearing installation does not have the adjustment capability, resulting in poor consistency in the bearing installation height, uneven bearing force, and thus affecting the safety and reliability of the entire shaft system.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] A height-adjustable ship bearing base vibration reduction device, comprising:

[0007] Upper and lower base plates;

[0008] A plurality of connecting members, one end of each connecting member passes through the upper base plate and is fixedly connected to the lower base plate;

[0009] a plurality of height adjustment members, each of the height adjustment members being cooperatively connected to the connecting member, the top of the height adjustment member being in contact with the upper base plate, and the distance between the upper base plate and the lower base plate being adjusted by adjusting the position of the height adjustment member on the connecting member;

[0010] A plurality of first elastic members are sleeved on the outside of the connecting member, and two ends of the first elastic members are respectively in contact with the upper base plate and the lower base plate.

[0011] In some embodiments, the system further comprises a plurality of second elastic members and a plurality of shock absorbers, wherein the bottom of the shock absorber is fixedly connected to the lower base plate, the end of the connecting member away from the upper base plate is inserted into the shock absorber and can move up and down in the shock absorber, the second elastic member is sleeved on the outside of the connecting member and located inside the first elastic member, and the two ends of the second elastic member are respectively in contact with the top of the shock absorber and the lower surface of the upper base plate;

[0012] Wherein, the first elastic member is sleeved on the outside of the shock absorber.

[0013] In some embodiments, the shock absorber includes a cylinder, an end cover and a first shock absorber assembly. An inner cavity is formed inside the cylinder. The end cover is sealed at the top of the inner cavity. The first shock absorber assembly is arranged in the inner cavity. The end of the connecting member away from the upper base plate passes through the end cover and is arranged in the inner cavity. This end of the connecting member is connected to the first shock absorber assembly. The first shock absorber assembly can move up and down in the inner cavity driven by the connecting member.

[0014] In some embodiments, an annular cavity is further formed inside the cylinder, and the annular cavity is located outside the inner cavity. A first liquid outlet is provided on the bottom surface of the inner cavity, and second liquid outlets are provided on both sides of the upper part of the annular cavity to connect the annular cavity and the inner cavity.

[0015] In some embodiments, the first vibration damping assembly includes a first piston and a third elastic member. The first piston is disposed in the inner cavity and is slidably connected to the cavity wall of the inner cavity on all sides. The end of the connecting member away from the upper base plate is connected to the first piston so that the first piston can move up and down in the inner cavity. The third elastic member is sleeved on the outside of the connecting member located between the first piston and the end cover.

[0016] In some embodiments, the vibration damper further includes a second vibration damping assembly and a third vibration damping assembly, and the second vibration damping assembly and the third vibration damping assembly are sequentially arranged in the inner cavity from close to the first vibration damping assembly to away from the first vibration damping assembly.

[0017] In some embodiments, the second vibration damping assembly includes a second piston, a first iron sheet, a first magnet, a second magnet, and a fourth elastic member, wherein the first magnet is disposed at the bottom of an end of the connecting member away from the upper base plate, the second piston is disposed in the inner cavity and is slidably connected to the cavity wall of the inner cavity on all sides, the first iron sheet is disposed through the second piston, the second magnet is disposed at an end of the first iron sheet below the second piston, and the fourth elastic member is installed in the inner cavity between the second piston and the first piston;

[0018] Wherein, the second piston is formed with a third liquid outlet.

[0019] In some embodiments, the third vibration damping assembly includes a third piston, a second iron sheet, a third magnet, and a fifth elastic member. The third piston is disposed in the inner cavity and is slidably connected to the inner cavity wall on all sides. The second iron sheet passes through the third piston. The third magnet is disposed at an end of the second iron sheet below the third piston. The fifth elastic member is installed in the inner cavity between the third piston and the second piston.

[0020] Wherein, the third piston is formed with a fourth liquid outlet.

[0021] In some embodiments, the connecting member includes a screw and a locking nut, the screw is arranged to pass through the upper base plate, and the locking nut is tightened on the screw located above the upper base plate.

[0022] In some embodiments, the height adjustment member is an adjustment nut that cooperates with the screw thread.

[0023] Compared to existing technologies, the present invention provides a height-adjustable marine bearing base vibration damping device designed to accommodate mounting height deviations and vibration issues during marine bearing movement. A height adjustment member allows the distance between the upper and lower base plates to be adjusted as needed, enabling the bearing's mounting height to be adjusted during installation. This ensures consistent mounting height, resulting in uniform bearing force and improved safety and reliability of the marine shafting system. Furthermore, the present invention utilizes a first elastic member to ensure vibration damping, reducing vibration during marine movement and enhancing the performance and stability of the marine shafting system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a general structural diagram of the height-adjustable ship bearing base vibration reduction device of the present invention;

[0025] Figure 2 Schematic diagram of the internal structure of the shock absorber of the present invention;

[0026] Figure 3is an exploded view of the shock absorber of the present invention;

[0027] Figure 4 It is a partial enlarged view of the shock absorber of the present invention.

[0028] The following are the descriptions of the reference numerals:

[0029] 100, upper base plate;

[0030] 200, lower base plate;

[0031] 300, connector, 310, screw, 320, lock nut;

[0032] 400, height adjustment member;

[0033] 500, first elastic member;

[0034] 600, second elastic member;

[0035] 700, shock absorber, 710, cylinder, 711, inner cavity, 7111, first liquid outlet, 712, annular cavity, 7121, second liquid outlet, 720, end cover, 730, first shock absorber assembly, 731, first piston, 732, third elastic member, 740, second shock absorber assembly, 741, second piston, 7411, third liquid outlet, 742, first iron sheet, 743, first magnet, 744, second magnet, 745, fourth elastic member, 750, third shock absorber assembly, 751, third piston, 7511, fourth liquid outlet, 752, second iron sheet, 753, third magnet, 754, fifth elastic member. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0037] To address the technical problem that current ship shafting bearing installations lack adjustment capabilities, resulting in poor consistency in bearing installation height, which in turn affects bearing performance and service life, the present invention designs a height-adjustable ship bearing base vibration damping device to address issues such as height deviation and vibration during movement of ship bearings.

[0038] See also Figure 1As shown, the present invention provides a height-adjustable ship bearing base vibration damping device, comprising an upper base plate 100, a lower base plate 200, a connecting member 300, a height adjustment member 400 and a first elastic member 500, wherein the upper base plate 100 and the lower base plate 200 are spaced apart, one end of the connecting member 300 passes through the upper base plate 100 and is fixedly connected to the lower base plate 200; the height adjustment member 400 is cooperatively connected to the connecting member 300, and the height adjustment member 400 can move up and down on the connecting member 300; the top of the height adjustment member 400 abuts against the upper base plate 100, and the distance between the upper base plate 100 and the lower base plate 200 can be adjusted by adjusting the position of the height adjustment member 400 on the connecting member 300; the first elastic member 500 is sleeved on the outside of the connecting member 300, and the two ends of the first elastic member 500 abut against the upper base plate 100 and the lower base plate 200 respectively for vibration reduction.

[0039] During use, the present invention secures the lower base plate 200 to the hull and installs the bearing or bearing base on the upper base plate 100. The distance between the upper and lower base plates 100 and 200 can be adjusted by adjusting the height of the height adjustment members 400 on the connector 300. When the heights of the multiple height adjustment members 400 are consistent, the bearing or bearing base is installed on the ship. The present invention ensures consistent bearing installation height, evenly distributes force on the bearing, and thus improves bearing performance and service life, thereby enhancing the safety and reliability of the ship's shafting system.

[0040] In one embodiment, Figure 2 As shown, in order to improve the vibration reduction effect, the vibration reduction device also includes a plurality of second elastic members 600 and a plurality of shock absorbers 700, the bottom of the shock absorber 700 is fixedly connected to the lower base plate 200, the end of the connecting member 300 away from the upper base plate 100 is inserted into the shock absorber 700 and can move up and down in the shock absorber 700, the second elastic member 600 is sleeved on the outside of the connecting member 300 and is located inside the first elastic member 500, and the two ends of the second elastic member 600 are respectively abutted against the top of the shock absorber 700 and the lower surface of the upper base plate 100; the first elastic member sleeve 500 is arranged on the outside of the shock absorber 700.

[0041] In one embodiment, Figure 3 and Figure 4As shown, the shock absorber 700 includes a cylinder 710, an end cover 720 and a first shock absorber assembly 730. An inner cavity 711 is formed inside the cylinder 710. The end cover 720 is sealed at the top of the inner cavity 711. The first shock absorber assembly 730 is arranged in the inner cavity 711. The end of the connecting member 300 away from the upper base plate 100 passes through the end cover 720 and is arranged in the inner cavity 711. The end of the connecting member 300 is connected to the first shock absorber assembly 730. The first shock absorber assembly 730 can move up and down in the inner cavity 711 driven by the connecting member 300.

[0042] In one embodiment, an annular cavity 712 is further formed inside the cylinder 710, and the annular cavity 712 is located outside the inner cavity 711. A first liquid outlet 7111 is provided on the bottom surface of the inner cavity 711, and second liquid outlets 7121 are provided on both sides of the upper part of the annular cavity 712 to connect the annular cavity 712 and the inner cavity 711.

[0043] In one embodiment, the first vibration damping assembly 730 includes a first piston 731 and a third elastic member 732. The first piston 731 is disposed in the inner cavity 711 and is slidably connected to the cavity wall of the inner cavity 711 on all sides. The end of the connecting member 300 away from the upper base plate 100 is connected to the first piston 731 so that the first piston 731 can move up and down in the inner cavity 711. The third elastic member 732 is sleeved on the outside of the connecting member 300 located between the first piston 731 and the end cover 720.

[0044] In one embodiment, the shock absorber 700 further includes a second shock absorber assembly 740 and a third shock absorber assembly 750, and the second shock absorber assembly 740 and the third shock absorber assembly 750 are sequentially arranged in the inner cavity 711 from close to the first shock absorber assembly 730 to away from the first shock absorber assembly 730.

[0045] In one embodiment, the second vibration damping assembly 740 includes a second piston 741, a first iron sheet 742, a first magnet 743, a second magnet 744 and a fourth elastic member 745. The first magnet 743 is arranged at the bottom of the end of the connecting member 300 away from the upper base plate 100. The second piston 741 is arranged in the inner cavity 711 and is slidably connected to the cavity wall of the inner cavity 711 on all sides. The first iron sheet 742 is arranged through the second piston 741. The second magnet 744 is arranged at the end of the first iron sheet 742 below the second piston 741. The fourth elastic member 745 is installed in the inner cavity 711 between the second piston 741 and the first piston 731. The second piston 741 is formed with a third liquid outlet 7411.

[0046] In one embodiment, the third vibration damping assembly 750 includes a third piston 751, a second iron sheet 752, a third magnet 753 and a fifth elastic member 754. The third piston 751 is arranged in the inner cavity 711 and is slidably connected to the cavity wall of the inner cavity 711 on all sides. The second iron sheet 752 is arranged through the third piston 751. The third magnet 753 is arranged at one end of the second iron sheet 752 below the third piston 751. The fifth elastic member 754 is installed in the inner cavity 711 between the third piston 751 and the second piston 741. The third piston 751 is formed with a fourth liquid outlet 7511.

[0047] In one embodiment, the connecting member 300 includes a screw rod 310 and a locking nut 320 . The screw rod 310 is disposed through the upper base plate 100 , and the locking nut 320 is tightened on the screw rod 310 located above the upper base plate 100 .

[0048] In one embodiment, the height adjustment member 400 is an adjustment nut threadably engaged with the screw rod 310 .

[0049] In one embodiment, the first elastic member 500 , the second elastic member 600 , the third elastic member 732 , the fourth elastic member 745 and the fifth elastic member 754 are all copper springs.

[0050] The working principle of the present invention is as follows:

[0051] During operation, the ship's bearing is first secured to the upper base plate 100 and the lower base plate 200 to the hull. The upper and lower base plates 100 and 200 are then connected using screws 310 and lock nuts 320. The height between the upper and lower base plates 100 and 200 is adjusted by adjusting the height adjustment member 400, thereby extending and retracting the first elastic member 500. During this process, the first elastic member 500 provides vibration damping for the device.

[0052] When the screw 310 moves downward, the first piston 731 and the second piston 741 move downward accordingly, and the hydraulic oil flows into the annular cavity 712 through the third liquid outlet 7411, the fourth liquid outlet 7511, and the first liquid outlet 7111, and then flows into the space where the third elastic member 732 is located through the second liquid outlet 7121, causing the lower pressure to decrease; at the same time, the first iron sheet 742 and the second iron sheet 752 move downward, causing the second magnet 744 and the third magnet 753 to gradually move downward from the original magnetic adsorption at the bottom of the second piston 741 and the bottom of the third piston 751, gradually blocking the third liquid outlet 7411 and the fourth liquid outlet 7511, thereby reducing the flow of hydraulic oil and enhancing the damping effect.

[0053] As the screw 310 continues to move downward, the first magnet 743 will magnetically attract the first iron sheet 742, causing it to move upward, thereby opening the third liquid outlet 7411. The second magnet 744 and the third magnet 753 will also magnetically attract the second iron sheet 752, causing it to move upward, thereby opening the fourth liquid outlet 7511 and enabling the flow of hydraulic oil. During this process, the screw 310 will be affected by the hydraulic oil's liquid resistance and the spring force during its downward movement. When the first magnet 743 and the second magnet 744 move downward, because the fourth elastic member 745 and the fifth elastic member 754 are copper springs, Lenz's law indicates that the first magnet 743 and the second magnet 744 will be affected by resistance when moving downward. These resistances work together to reduce vibration.

[0054] When the screw 310 moves upward, the first and second pistons 731 and 741 move upward with it. Hydraulic oil flows into the lower space of the third piston 751 through the first and second liquid outlets 7111 and 7121, respectively, and through the annular cavity 712. This increases the pressure below the third piston 751. Furthermore, due to the magnetic attraction of the second magnet 744 on the bottom of the second piston 741 and the third magnet 753 on the bottom of the third piston 751, the third and fourth liquid outlets 7411 and 7511 remain open, allowing the hydraulic oil to flow back. During this process, the screw 310 is subject to the resistance of the hydraulic oil and the spring force during its upward movement. As the first and second magnets 743 and 744 move upward, due to the internal fourth and fifth elastic members 745 and 754 being copper springs, Lenz's law indicates that the first and second magnets 743 and 744 experience resistance during their upward movement. These resistances act together to provide vibration reduction.

[0055] In summary, the height-adjustable ship bearing base vibration damping device provided by the present invention has the following beneficial effects:

[0056] 1. Flexibility in height adjustment: The height adjustment member 400 of the present invention allows for adjustment of the height of the upper base plate 100, thereby conveniently changing the height deviation that may occur during the installation of the main engine of the ship. This design provides a simple and effective method to ensure that the bearing base can adapt to different installation conditions.

[0057] 2. Enhanced vibration damping performance: The present invention achieves vibration damping requirements through the combined operation of the first elastic member 500, the second elastic member 600, and the vibration damper 700. Furthermore, the fourth elastic member 745 and the fifth elastic member 754 in the vibration damper 700 utilize Lenz's law to generate resistance when the magnet moves, further enhancing vibration damping performance. This composite vibration damping mechanism effectively reduces vibration and impact during ship operation, improving ship stability.

[0058] 3. Adjustment accuracy and stability: The present invention achieves accurate and stable height adjustment by cooperating with the screw 310 and the height adjustment member 400. This structural design ensures that the height adjustment of the bearing base is both accurate and reliable during the operation of the ship, avoiding additional vibration or structural damage caused by improper adjustment.

[0059] 4. Intelligent and efficient: The vibration reduction device of the present invention is intelligently and efficiently designed. It can automatically adapt to different working conditions during the operation of the ship and adjust the vibration reduction performance in real time to ensure that the bearing base is always in the best working condition.

[0060] 5. Optimization of structural design: The vibration damping device of the present invention adopts a copper spring, as well as a floating piston and sealing ring design. These structural optimizations not only improve the durability and sealing of the vibration damping device, but also make maintenance and replacement easier;

[0061] 6. Extension of service life: Through the above design, the present invention can effectively reduce the vibration and impact of the bearing base, thereby extending the service life of the bearing, reducing maintenance costs, and improving the overall operating efficiency of the ship.

[0062] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A height-adjustable ship bearing base vibration damping device, characterized in that: include: Upper and lower base plates; A plurality of connecting members, one end of each connecting member passes through the upper base plate and is fixedly connected to the upper base plate; a plurality of height adjustment members, each of the height adjustment members being cooperatively connected to the connecting member, the top of the height adjustment member being in contact with the upper base plate, and the distance between the upper base plate and the lower base plate being adjusted by adjusting the position of the height adjustment member on the connecting member; a plurality of first elastic members, wherein the first elastic members are sleeved on the outside of the connecting member, and two ends of the first elastic members are respectively in contact with the upper base plate and the lower base plate; The invention also includes a plurality of second elastic members and a plurality of shock absorbers, wherein the bottom of the shock absorber is fixedly connected to the lower base plate, the end of the connecting member away from the upper base plate is inserted into the shock absorber and can move up and down in the shock absorber, the second elastic member is sleeved on the outside of the connecting member and located inside the first elastic member, and the two ends of the second elastic member are respectively in contact with the top of the shock absorber and the lower surface of the upper base plate; Wherein, the first elastic member is sleeved on the outside of the shock absorber; The vibration damper includes a cylinder, an end cover, and a first vibration damping assembly. An inner cavity is formed inside the cylinder. The end cover is sealed and disposed at the top of the inner cavity. The first vibration damping assembly is disposed in the inner cavity. An end of the connecting member away from the upper base plate passes through the end cover and is disposed in the inner cavity. The end of the connecting member is connected to the first vibration damping assembly. The first vibration damping assembly can move up and down in the inner cavity under the drive of the connecting member. An annular cavity is also formed inside the cylinder, and the annular cavity is located outside the inner cavity. A first liquid outlet is provided on the bottom surface of the inner cavity, and second liquid outlets are provided on both sides of the upper part of the annular cavity to connect the annular cavity and the inner cavity.

2. The height-adjustable ship bearing base vibration damping device according to claim 1, characterized in that: The first vibration damping assembly includes a first piston and a third elastic member. The first piston is arranged in the inner cavity and is slidably connected to the cavity wall of the inner cavity on all sides. The end of the connecting member away from the upper base plate is connected to the first piston so that the first piston can move up and down in the inner cavity. The third elastic member is sleeved on the outside of the connecting member located between the first piston and the end cover.

3. The height-adjustable ship bearing base vibration damping device according to claim 2, characterized in that: The vibration absorber further includes a second vibration damping assembly and a third vibration damping assembly, which are sequentially arranged in the inner cavity from close to the first vibration damping assembly to away from the first vibration damping assembly.

4. The height-adjustable ship bearing base vibration damping device according to claim 3, characterized in that: The second vibration damping assembly includes a second piston, a first iron sheet, a first magnet, a second magnet, and a fourth elastic member, wherein the first magnet is disposed at the bottom of an end of the connecting member away from the upper base plate, the second piston is disposed in the inner cavity and is slidably connected to the cavity wall of the inner cavity on all sides, the first iron sheet is disposed through the second piston, the second magnet is disposed at an end of the first iron sheet located below the second piston, and the fourth elastic member is installed in the inner cavity between the second piston and the first piston; Wherein, the second piston is formed with a third liquid outlet.

5. The height-adjustable ship bearing base vibration damping device according to claim 4, characterized in that: The third vibration damping assembly includes a third piston, a second iron sheet, a third magnet, and a fifth elastic member. The third piston is disposed in the inner cavity and is slidably connected to the inner cavity wall on all sides. The second iron sheet passes through the third piston. The third magnet is disposed at an end of the second iron sheet below the third piston. The fifth elastic member is installed in the inner cavity between the third piston and the second piston. Wherein, the third piston is formed with a fourth liquid outlet.

6. The height-adjustable ship bearing base vibration damping device according to any one of claims 1 to 5, characterized in that: The connecting member includes a screw rod and a locking nut. The screw rod is arranged through the upper base plate, and the locking nut is tightened on the screw rod located above the upper base plate.

7. The height-adjustable ship bearing base vibration damping device according to claim 6, characterized in that: The height adjustment member is an adjustment nut that cooperates with the screw thread.

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