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A large-load low-frequency vibration isolation device for ships and its installation method

A large-load, low-frequency technology, which is applied in the field of large-load low-frequency vibration isolation devices for ships, can solve the problems that it is difficult to meet the low-frequency vibration and noise control requirements of large-scale mechanical equipment, and the initial stiffness of the damping force is limited, so as to improve low-frequency vibration isolation performance and facilitate operation , the effect of compact structure

Active Publication Date: 2021-03-09
CHINA SHIP SCIENTIFIC RESEARCH CENTER (THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Taking the electrorheological fluid (ERF) damper as an example, its damping force depends on the magnitude of the applied current, and the damping force and initial stiffness provided by a single ERF damper are relatively limited, which is difficult to meet the low-frequency vibration and noise control requirements of large mechanical equipment

Method used

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  • A large-load low-frequency vibration isolation device for ships and its installation method
  • A large-load low-frequency vibration isolation device for ships and its installation method
  • A large-load low-frequency vibration isolation device for ships and its installation method

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Embodiment Construction

[0039] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

[0040] Such as figure 1 and figure 2 As shown, a marine large-load low-frequency vibration isolation device of this embodiment includes a cylinder 4 with an open end, a support frame 1 is installed through the cylinder wall of the cylinder 4, and the end of the support frame 1 located inside the cylinder 4 is installed. There is a steel wire rope 3, and the steel wire rope 3 is spirally wound between the support frame 1 and the inner wall of the cylinder body 4; a piston block 6 sliding along it is installed inside the open end of the cylinder body 4, and the piston block 6 and the cylinder body 4 jointly form a A closed cavity filled with a shear thickening fluid 2 .

[0041]Through the combined vibration isolation structure of "steel wire rope + shear thickening fluid (STF) + piston block", the structural load-bearing function and fri...

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Abstract

The invention relates to a marine high-load low-frequency vibration isolation device and an installation method thereof, comprising a cylinder body with one end open; a support frame is installed through the cylinder wall; a wire rope is installed at the end of the support frame inside the cylinder body; the wire rope is wound in a spiral manner It is wound between the support frame and the inner wall of the cylinder; the inside of the open end of the cylinder body is installed with a piston block that slides along it, and the piston block and the cylinder body together form a closed cavity, and the cavity is filled with shear thickening liquid; equipment on the top of the support frame The platform is used to install the equipment, the upper plate at the bottom of the support frame is located inside the cylinder body and used for winding the wire rope, the equipment platform and the upper plate are connected by a column, and the support frame is guided by the column to move up and down relative to the cylinder body; the invention is comprehensively applied The low-frequency shear energy dissipation characteristics of shear thickening fluid and the friction energy dissipation characteristics and load-bearing capacity of steel wire ropes enable the equipment to produce significant vibration isolation effects in the low-frequency vibration frequency range, especially for ships with large loads and low-speed equipment. Vibration and noise control.

Description

technical field [0001] The invention relates to the technical field of vibration control, in particular to a ship-used large-load low-frequency vibration isolation device and an installation method thereof. Background technique [0002] There are various mechanical devices, weaponry and electrical equipment installed on the ship. The mechanical vibration and noise generated by them are transmitted to the hull structure through the support system such as the base, and radiate vibration and sound into the water. For ships with high stealth performance, it is particularly difficult to eliminate the local vibration of the engine room. Using vibration isolation measures to reduce the transmission of vibration generated by mechanical equipment is an effective means to control structural vibration and noise transmission, that is, inserting Vibration isolation device for mechanical vibration isolation. To this end, various types of vibration isolation devices have been developed, s...

Claims

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Application Information

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IPC IPC(8): F16F7/08F16F7/09
CPCF16F7/08F16F7/09
Inventor 李永胜王纬波张彤彤
Owner CHINA SHIP SCIENTIFIC RESEARCH CENTER (THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION)
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