Height-adjustable ship bearing base damping device

Abstract

The invention discloses a height-adjustable ship bearing base damping device which comprises an upper bottom plate, a lower bottom plate, a plurality of connecting pieces, a plurality of height adjusting pieces and a plurality of first elastic pieces, and one end of each connecting piece penetrates through the upper bottom plate and is fixedly connected with the lower bottom plate; each height adjusting part is connected with the corresponding connecting part in a matched mode, the tops of the height adjusting parts abut against the upper bottom plate, and the distance between the upper bottom plate and the lower bottom plate is adjusted by adjusting the positions of the height adjusting parts on the connecting parts; the first elastic piece is arranged outside the connecting piece in a sleeving mode, and the two ends of the first elastic piece abut against the upper bottom plate and the lower bottom plate respectively. The technical problem that the safety and reliability of the whole shafting are affected due to the fact that the bearing installation height consistency is poor due to the fact that the existing ship shafting bearing installation does not have the adjusting capacity and the bearing is stressed unevenly is solved.

Description

Technical Field

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

[0002] The installation of ship shafting bearings has strict requirements for height consistency, which is crucial because it is directly related to the uniformity of bearing force. Uneven bearing force may cause bearing damage or performance degradation, which in turn affects the operating efficiency and service life of the entire ship shafting. However, due to the complexity of the ship structure, the deviation of the bearing installation height is usually difficult to completely eliminate. Therefore, the bearing installation needs to have a certain adjustment ability to adapt to this inevitable deviation. This adjustment ability is crucial to ensure uniform bearing force and improve the safety and reliability of the shafting.

[0003] However, the bearing installation of existing ship shafting generally does not have the ability to adjust, which limits the ability to cope with the main engine installation height deviation, which not only affects the performance of the bearing, but may also threaten the safety and reliability of the entire ship shafting. Therefore, it is necessary to design a ship bearing base vibration reduction device with adjustable height, which allows the height of the bearing base to be accurately adjusted to adapt to the deviation of the bearing installation height, ensure the uniformity of the bearing force, and thus improve the safety and reliability of the ship shafting. Summary of the invention

[0004] The purpose of the present invention is to propose a height-adjustable ship bearing base vibration reduction device to solve the technical problem that the existing ship shaft system bearing installation has no adjustment capability, resulting in poor consistency in the bearing installation height, uneven bearing force, and further 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: A height-adjustable ship bearing base vibration reduction device, comprising: Upper and lower base plates; A plurality of connecting members, one end of each of the connecting members passes through the upper base plate and is fixedly connected to the lower base plate; A plurality of height adjustment members, each of which is connected to the connecting member in cooperation, the top of each of which is in contact with the upper base plate, and the distance between the upper base plate and the lower base plate can be adjusted by adjusting the position of each of the height adjustment members on the connecting member; 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.

[0006] In some embodiments, it 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 bottom plate, the end of the connecting member away from the upper bottom plate is inserted into the shock absorber and can move up and down in the shock absorber, the second elastic member is sleeved outside 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 bottom plate; Wherein, the first elastic member is sleeved on the outside of the shock absorber.

[0007] 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 and arranged at the top of the inner cavity, the first shock absorber assembly is arranged in the inner cavity, one end of the connecting piece away from the upper base plate passes through the end cover and is arranged in the inner cavity, and this end of the connecting piece is connected to the first shock absorber assembly, and the first shock absorber assembly can move up and down in the inner cavity driven by the connecting piece.

[0008] In some embodiments, an annular cavity is also formed inside the cylinder, and the annular cavity is located outside the inner cavity. A first liquid outlet is opened on the bottom surface of the inner cavity, and second liquid outlets are opened on both sides of the upper part of the annular cavity to connect the annular cavity with the inner cavity.

[0009] 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, and the third elastic member is sleeved on the outside of the connecting member between the first piston and the end cover.

[0010] 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.

[0011] In some embodiments, the second vibration reduction assembly includes a second piston, a first iron sheet, a first magnet, a second magnet and a fourth elastic member, the first magnet is arranged at the bottom of one end of the connecting member away from the upper base plate, the second piston is arranged in the inner cavity and is slidably connected to the cavity wall of the inner cavity on all sides, the first iron sheet is arranged through the second piston, the second magnet is arranged at one 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; Wherein, the second piston is formed with a third liquid outlet.

[0012] In some embodiments, the third vibration reduction assembly includes a third piston, a second iron sheet, a third magnet and a fifth elastic member, wherein the third piston is disposed in the inner cavity and is slidably connected to the cavity wall of the inner cavity on all sides, the second iron sheet is disposed through the third piston, the third magnet is disposed at one end of the second iron sheet below the third piston, and 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.

[0013] In some embodiments, 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.

[0014] In some embodiments, the height adjustment member is an adjustment nut that cooperates with the thread of the screw.

[0015] Compared with the prior art, the present invention provides a height-adjustable ship bearing base vibration reduction device, which is used to adapt to the ship bearing installation height deviation and vibration problems during movement. The height adjustment member can be set to adjust the distance between the upper base plate and the lower base plate as needed, and then the installation height of the bearing can be adjusted when it is installed, ensuring the consistency of the bearing installation height, so that the bearing is evenly stressed, and the safety and reliability of the ship shaft system are improved. At the same time, the present invention can ensure its vibration reduction function through the first elastic member set, reduce the vibration problem during the ship movement, and improve the performance and stability of the ship shaft system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a general structural diagram of the height-adjustable ship bearing base vibration reduction device of the present invention; Figure 2 is a schematic diagram of the internal structure of the shock absorber of the present invention; Figure 3 is an exploded view of the shock absorber of the present invention; Figure 4 It is a partial enlarged view of the shock absorber of the present invention.

[0017] The following are the descriptions of the reference numerals: 100, upper base plate; 200, lower base plate; 300, connecting piece, 310, screw, 320, locking nut; 400, height adjustment member; 500, a first elastic member; 600, second elastic member; 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

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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.

[0019] Aiming at the technical problem that the bearing installation of the current ship shaft system does not have the adjustment capability, resulting in poor consistency of the bearing installation height, thus affecting the performance and service life of the bearing, the present invention designs a ship bearing base vibration reduction device with adjustable height to adapt to the problems of ship bearing installation height deviation and vibration during movement.

[0020] See also Figure 1 As shown, the present invention provides a height-adjustable ship bearing base vibration reduction 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 arranged at intervals, and 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 with 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.

[0021] When the present invention is used, the lower bottom plate 200 is fixed on the hull, and the bearing or the bearing base is installed on the upper bottom plate 100. Then, the distance between the upper bottom plate 100 and the lower bottom plate 200 can be adjusted by adjusting the height of the height adjustment member 400 on the connecting member 300. When the heights of the plurality of height adjustment members 400 are consistent, the installation of the bearing or the bearing base on the ship is completed. The present invention can ensure the consistency of the bearing installation height, so that the bearing is evenly stressed, thereby improving the performance and service life of the bearing, thereby improving the safety and reliability of the ship shaft system.

[0022] In one embodiment, if 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 in 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.

[0023] In one embodiment, if Figure 3 and Figure 4 As 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 and arranged on the top of the inner cavity 711. The first shock absorber assembly 730 is arranged in the inner cavity 711. One 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.

[0024] In one embodiment, an annular cavity 712 is 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 with the inner cavity 711.

[0025] 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, and 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.

[0026] 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 .

[0027] 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 one 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 one end of the first iron sheet 742 located below the second piston 741, and 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.

[0028] 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 disposed 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 disposed through the third piston 751. The third magnet 753 is disposed 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.

[0029] 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 .

[0030] In one embodiment, the height adjustment member 400 is an adjustment nut threadably matched with the screw rod 310 .

[0031] 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.

[0032] The working principle of the present invention is as follows: During operation, the ship bearing is first fixed on the upper bottom plate 100, and the lower bottom plate 200 is fixed on the hull, then the upper bottom plate 100 is connected with the lower bottom plate 200 by the screw rod 310 and the locking nut 320, and the height between the upper bottom plate 100 and the lower bottom plate 200 is adjusted by adjusting the height adjustment member 400 to extend and retract the first elastic member 500. In this process, the first elastic member 500 provides a vibration reduction effect for the device.

[0033] When the screw rod 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 bottom of the second piston 741 and the bottom of the third piston 751 due to magnetic adsorption, 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.

[0034] When the screw rod 310 continues to move downward, the first magnet 743 will move the first iron sheet 742 upward due to magnetic attraction, thereby opening the third liquid outlet 7411, and the second magnet 744 and the third magnet 753 will move the second iron sheet 752 upward due to magnetic attraction, thereby opening the fourth liquid outlet 7511, and realizing the flow of hydraulic oil. In this process, the screw rod 310 will be affected by the liquid resistance of the hydraulic oil and the spring force of the spring during the downward movement. When the first magnet 743 and the second magnet 744 move downward, since the fourth elastic member 745 and the fifth elastic member 754 are copper springs, it can be known from Lenz's law that the first magnet 743 and the second magnet 744 will be affected by resistance when moving downward, and these resistances work together to play a vibration reduction role.

[0035] When the screw rod 310 moves upward, the first piston 731 and the second piston 741 move upward accordingly, and the hydraulic oil flows into the lower space of the third piston 751 through the first liquid outlet 7111, the second liquid outlet 7121 and the annular cavity 712, causing the lower pressure to increase. 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 liquid outlet 7411 and the fourth liquid outlet 7511 remain open to achieve the reflux of the hydraulic oil. In this process, the screw rod 310 will be affected by the liquid resistance of the hydraulic oil and the spring force of the spring during the upward movement. When the first magnet 743 and the second magnet 744 move upward, since the fourth elastic member 745 and the fifth elastic member 754 are copper springs, it can be seen from Lenz's law that the first magnet 743 and the second magnet 744 will be affected by resistance when moving upward, and these resistances work together to play a role in vibration reduction.

[0036] In summary, the height-adjustable ship bearing base vibration reduction device provided by the present invention has the following beneficial effects: 1. Flexibility of height adjustment: The height of the present invention can be adjusted through the height adjustment member 400, so as to conveniently change the height of the upper base plate 100 to adapt to the height deviation that may occur during the installation of the ship's main engine; this design provides a simple and effective method to ensure that the bearing base can adapt to different installation conditions; 2. Enhanced vibration reduction performance: The present invention achieves vibration reduction requirements by the first elastic member 500, the second elastic member 600 and the vibration absorber 700 working together; in addition, the fourth elastic member 745 and the fifth elastic member 754 in the vibration absorber 700 use Lenz's law to generate resistance when the magnet moves, further enhancing the vibration reduction performance; this composite vibration reduction mechanism effectively reduces vibration and impact during ship operation and improves the stability of the ship; 3. Adjustment accuracy and stability: The present invention achieves accuracy and stability of height adjustment by means of the screw rod 310 and the height adjustment member 400. This structural design ensures that the height adjustment of the bearing base is accurate and reliable during the operation of the ship, and avoids additional vibration or structural damage caused by improper adjustment. 4. Intelligent and efficient: The vibration reduction device of the present invention is intelligently and efficiently designed, and can automatically adapt to different working conditions during the operation of the ship, adjust the vibration reduction performance in real time, and ensure that the bearing base is always in the best working condition; 5. Optimization of structural design: The vibration reduction device of the present invention adopts a copper spring, a floating piston and a sealing ring design. These structural optimizations not only improve the durability and sealing of the vibration reduction device, but also make maintenance and replacement easier; 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.

[0037] The specific implementation of the present invention described above does not constitute a limitation on the protection scope 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 protection scope of the claims of the present invention.

Claims

1. A height-adjustable ship bearing base vibration reduction device, characterized in that: include: Upper and lower base plates; A plurality of connecting members, one end of each of the connecting members passes through the upper base plate and is fixedly connected to the lower base plate; A plurality of height adjustment members, each of which is connected to the connecting member in cooperation, the top of each of which is in contact with the upper base plate, and the distance between the upper base plate and the lower base plate can be adjusted by adjusting the position of each of the height adjustment members on the connecting member; 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.

2. The height-adjustable ship bearing base vibration reduction device according to claim 1, characterized in that: It 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 bottom plate, an end of the connecting member away from the upper bottom plate is inserted into the shock absorber and can move up and down in the shock absorber, the second elastic member is sleeved outside 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 bottom plate; Wherein, the first elastic member is sleeved on the outside of the shock absorber.

3. The height-adjustable ship bearing base vibration reduction device according to claim 2, characterized in that: 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 and arranged on the top of the inner cavity. The first shock absorber assembly is arranged in the inner cavity. One end of the connecting member away from the upper base plate passes through the end cover and is arranged in the inner cavity. The 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.

4. The height-adjustable ship bearing base vibration reduction device according to claim 3, characterized in that: 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 with the inner cavity.

5. The height-adjustable ship bearing base vibration reduction device according to claim 4, 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.

6. The height-adjustable ship bearing base vibration reduction device according to claim 5, characterized in that: The vibration damper further comprises 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 a direction close to the first vibration damping assembly to a direction away from the first vibration damping assembly.

7. The height-adjustable ship bearing base vibration reduction device according to claim 6, characterized in that: The second vibration reduction 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 one 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 one 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.

8. The height-adjustable ship bearing base vibration reduction device according to claim 7, characterized in that: The third vibration reduction assembly comprises a third piston, a second iron sheet, a third magnet and a fifth elastic member, wherein the third piston is arranged in the inner cavity and is slidably connected to the cavity wall of the inner cavity on all sides, the second iron sheet is arranged through the third piston, the third magnet is arranged at one end of the second iron sheet below the third piston, and 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.

9. The height-adjustable ship bearing base vibration reduction device according to any one of claims 1 to 8, 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.

10. The height-adjustable ship bearing base vibration reduction device according to claim 9, characterized in that: The height adjustment member is an adjustment nut that matches with the thread of the screw rod.

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