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Apparatus for preventing against resonant vibration

A technology of transmission device and vibration system, which is applied in the directions of propulsion engine, transportation and packaging, vibration suppression adjustment, etc., can solve the problems of easy interference, expensive mechanical structure, etc., achieve short response time, easy quantification, and reduce the number of Effect

Active Publication Date: 2007-05-30
MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of construction allows a relatively precise adjustment of the support force within a given movability of the support relative to the mechanical support, it is relatively expensive and susceptible to disturbances relative to the mechanical construction.

Method used

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  • Apparatus for preventing against resonant vibration
  • Apparatus for preventing against resonant vibration
  • Apparatus for preventing against resonant vibration

Examples

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Embodiment Construction

[0029] FIG. 1 shows an engine 3 installed in the engine room 1 of a ship represented by a support structure 2 as a drive machine for the ship. Preferably, it is a two-stroke large diesel engine in crosshead design. The structure and mode of operation of such engines are known per se.

[0030] The motor 3 is laterally supported in the region above it, ie in the region of its upper passage. There is therefore provided at least one bearing device 4 mounted between the support structure of the side wall of the nacelle 1 and the engine part facing the side wall, ie the discharge channel of the exhaust gas turbocharger. Expediently, a plurality of such bearing devices 4 can be arranged along the length of the engine 3 . Also provided on both sides of the engine 3 are opposing bearings 4 .

[0031] The bearing device 4 is designed as a single-acting, hydraulic bearing device. As can best be seen in FIG. 2, the support device comprises at least one cylinder 5 with a working chambe...

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Abstract

The invention relates to a hydraulic supporting device (4) for supporting an engine (3) for a ship at a side with respect to a supporting structure (2) receiving the engine for the ship. The supporting device (4) comprises at least one cylinder (5) having an operation chamber (6) defined by a single-acting piston 7 cooperating with a power transmission device (8). The operation chamber (6) is connected with an accumulator (12) including hydraulic fluid to which bias load is applied, by a supply pipe system having at least one branched supply pipe (10).

Description

technical field [0001] The invention relates to a device for preventing resonance of a vibrating system consisting of an engine, in particular a marine engine, and a nacelle structure accommodating the engine. Background technique [0002] In engines outside the dead center position of the pistons, forces are produced which are directed transversely to the cylinder axis, which in crosshead engines are transmitted via the crossheads to the crosshead bearings and thus lead to a moment acting on the frame, the so-called guiding moment. The torque varies with piston frequency. In order to avoid resonance of the vibrating system comprising the engine and the nacelle, ie the nacelle structure supporting the engine, the engine is supported in its upper region by lateral bearings relative to corresponding adjacent side walls of the nacelle. The fixed frequency of the vibration system described by the bearing device is increased in such a way that it is separated from the frequency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/023B63H21/30
CPCB63H21/302F16F15/027
Inventor H·B·彼得森A·L·奥尔森
Owner MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
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