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Boat hull surface buffering shock-absorbing device

A technology of vibration damping device and hull, which is applied in the direction of hull, hull parts, hull, etc., can solve the problems of not finding a buffer and vibration damping method and device, changing the dynamic performance of the ship, and rapidly eroding, so as to achieve better vibration damping effect. The effect of good vibration isolation effect and broad application prospect

Active Publication Date: 2008-06-04
QINGDAO CREATE ENVIRONMENT CONTROL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To solve this problem, there is a method of reducing the diameter of the blade. Although it can reduce the vibration intensity to a certain extent, it changes the dynamic performance of the ship; directly attaching the rubber layer on the surface of the hull has the disadvantages of fast abrasion and easy damage, so there has been no Find an effective and durable shock absorbing method and device

Method used

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  • Boat hull surface buffering shock-absorbing device
  • Boat hull surface buffering shock-absorbing device
  • Boat hull surface buffering shock-absorbing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 , figure 2 As shown, the hull surface buffering and damping device of the present invention is arranged on the hull 1 above the propeller 2, and the hull surface buffering and damping device includes a baffle plate 3, a steel spring 4 as an elastic element and an elastic spring 4 as a sealing element. rubber5. Wherein, the elastic rubber 5 is connected with the hull 1 and the baffle 3 as a whole through vulcanization. For positioning considerations, centering rings 7 are respectively provided on the hull 1 and the baffle 3 , and the two ends of the steel spring 4 are positioned by using the centering rings 7 . The steel spring 4 can also be fixed on the hull 1 or / and the baffle plate 3 if necessary.

[0023] When the ship is sailing, the propeller rotates and stirs the water flow to form a periodic exciting force on the upper impact, and the exciting force will excite the vibration of the hull. Because the surface of the hull above it is equipped wi...

Embodiment 2

[0027] Such as image 3 As shown, the difference from Embodiment 1 is that a connecting box 21 is added, the steel spring 4 is located between the baffle plate 3 and the connecting box 21, and a centering ring for positioning elastic elements is set on the connecting box 21 accordingly. 7. The elastic rubber 5 as a sealing element is connected with the connection box 21 and the baffle 3 as a whole through vulcanization. After the above-mentioned structure is assembled, it is integrally fixedly connected to the hull 1 by fasteners to form the hull surface buffer and vibration damping device of the present invention. Of course, the connection with the hull here can also be welded connection or other fixed connection methods, all of which can achieve the same effect.

[0028] If the space between the baffle and the connecting box is filled with water, the baffle will squeeze and pull the water body when it vibrates. Since the water body is difficult to escape, the stiffness of ...

Embodiment 3

[0031] Such as Figure 4 As shown, the difference from Embodiment 1 is that the sealing element is elastic polyurethane 5. In order to prevent the water flow from directly impacting the elastic polyurethane 5 and cause the seal to be damaged too quickly, a protective plate for blocking the sealing area is welded on the side of the baffle plate 3 8. In order to facilitate the replacement of the steel spring 4, a detachable flange 6 is provided at the corresponding position of the hull 1 and the steel spring 4, and a gasket 22 is used for sealing in order to prevent leakage. In consideration of positioning and easy replacement, one end of the steel spring 4 is fixedly bonded to the flange 6 .

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Abstract

The invention belongs to the field of vibration control, in particular relating to a buffer device which prevents a boat body from generating vibration caused by water jet impact; wherein, an elastic part and a baffle are arranged on at least part of the contact surface between the boat body and the water; the elastic part is positioned between the baffle and the corresponding boat body, and the baffle is connected with the boat body through the elastic part. A buffering vibration-reducing device of the invention can isolate the impact outside the boat body from the boat body and has good effect of vibration reduction and can also prolong the service life of the boat body through most of the inertia balance of the baffle and the buffering of the elastic part. The invention can be widely applied in the vibration control over impact of buffering water on the boat bodies of various boats and is not only suitable for the situations which bear the periodic excitation force such as blade water but also the situations of random impact or other sudden impacts produced by buffering wind waves, etc.

Description

technical field [0001] The invention belongs to the field of vibration control, in particular to a buffer device for preventing the hull from vibrating due to the impact of water flow. Background technique [0002] With the development of the shipping industry, ships continue to develop in the direction of large volume, high speed, and high power. , when the hull is impacted by the water flow stirred up by the high-speed rotation of the propeller or the impact of wind and waves, it will produce large vibrations, especially the excessive vibration of the stern. The vibration of the hull is allowed within a certain range, but if the vibration is too large, it will affect the normal operation of the equipment and instruments on board, reduce the working accuracy, shorten the service life, and even cause fatigue damage to the hull structure in severe cases, resulting in hull fracture and even damage. At the same time, the vibration of the hull also seriously affects the ride co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B9/00B63B3/16B63H5/00
Inventor 尹学军
Owner QINGDAO CREATE ENVIRONMENT CONTROL TECH
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