A casting damping device for stern bearing and its preparation method

A technology for damping devices and bearings, which is applied to transmissions, shafts, bearings, and bearing components of synchronous propulsion components. It can solve the problems of difficult maintenance and disassembly, inability to use stern bearings, and high requirements for pouring environments, so as to achieve good vibration isolation The effect of passing

Active Publication Date: 2020-03-20
NO 719 RES INST CHINA SHIPBUILDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the defects existing in the prior art, one of the purposes of the present invention is to provide a casting damping device for the stern bearing, which can solve the problem that the existing stern bearing self-alignment device cannot apply all the stern bearings, resulting in Insufficient vibration isolation measures for stern bearings; solve the problems of high requirements on pouring environment, difficult maintenance and disassembly, and failure to achieve effective vibration isolation design existing in the direct pouring of epoxy resin between the existing stern bearings and shaft hubs

Method used

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  • A casting damping device for stern bearing and its preparation method
  • A casting damping device for stern bearing and its preparation method
  • A casting damping device for stern bearing and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0042] like figure 1 As shown, a casting damping device for a stern bearing, the damping device includes an inner bushing 1 , a casting body 2 and an outer bushing 3 .

[0043] Among them, the inner bush 1 and the outer bush 3 are both cylindrical with a flange at one end, the outer bush 3 is set on the inner bush 1, and the casting body 2 is solidified by pouring the inner bush 1 and the outer bush Between sets of 3.

[0044] After the casting body 2 is solidified, in the damping device, a circle of through holes and a circle of threaded holes are evenly distributed along the circumference on the flanges of the inner bushing 1 , the casting body 2 and the outer bushing 3 .

[0045] image 3 It is a schematic diagram of the overall arrangement of the damping device in the hull 11, showing the specific positions of the propeller 9, the stern bearing 8, the damping device, the stern bearing hub 4, and the stern shaft 10 in the hull 11, As can be seen from the figure, the dampin...

Embodiment 2

[0066] like figure 1 As shown, a casting damping device for stern bearing, the thickness of the inner bush 1 is 36mm, the thickness of the outer bush 3 is 32mm, the thickness of the casting body 2 is 18mm, and the casting body material is German EPOCAST 36 casting type epoxy gasket, its The performance indicators are:

[0067] Tensile strength ≥ 49.4MPa, compressive strength ≥ 164MPa, cantilever beam unnotched impact strength ≥ 2.0kJ / m 2 , heat distortion temperature ≥ 90 ℃, Barcol hardness ≥ 55;

[0068] Elastic modulus (E) = 5.61GPa; density (ρ) = 1670kg / m 3 ; Poisson's ratio (μ) = 0.337;

[0069] The remaining parts are the same as those in the casting damping device for the stern bearing described in Embodiment 1.

[0070] The steps of the preparation method of the casting damping device for the stern bearing described in this embodiment are as follows:

[0071] (1) Assembly positioning: same as step (1) of embodiment 1.

[0072] (2) The first sealing treatment: the ...

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Abstract

The invention relates to a stern bearing pouring damping device and its reparation method, and belongs to the technical field of a ship damping device. An outer bush in the damping device sleeves to an inner bush, one end is provided with a flange; a pouring body is poured and solidified between the inner and outer bushes; the damping device is installed between a stern bearing propeller boss anda stern bearing; the damping device is connected with the stern bearing propeller boss and the stern bearing through a bolt; the materials of the inner and outer bushes are consistent with that of thestern bearing propeller boss; the pouring body material is an epoxy pouring material; after curing, the tensile strength is not less than 34 MPa, and compression strength is not less than 100 MPa; the notch-free impact intensity of a cantilever beam is not less than 1.7kJ / m2, the thermal deformation temperature is not less than 70 DEG C, and the Barcol hardness is not less than 35. The damping device is easy to dismount, overhaul and replace; the force transmissibility isolating efficiency is more than 50%. The transmission of vibration from the stern bearing to the outside of a ship body canbe effectively controlled, the low-noise shipping is realized; the stern bearing pouring damping device can be poured and processed in a factory and not influenced by environment temperature.

Description

technical field [0001] The invention relates to a casting damping device for a stern bearing and a preparation method thereof. The device can effectively control the transmission of the vibration through the stern bearing to the outside of the hull on the basis of ensuring that the support strength is satisfied, so as to realize the low-noise navigation of the ship, which belongs to the ship Technical field of vibration damping device. Background technique [0002] With the development of ship technology, the requirements for sailing comfort and concealment are getting higher and higher. According to the alignment and bearing requirements, the ship shafting equipment and the hull base are rigidly connected, and shock absorbers cannot be installed, so there is a lack of effective vibration reduction and vibration isolation measures. The propeller of a large ship has a large mass, and the load distribution of the stern bearing is extremely uneven. At the same time, it is affe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63H23/32F16C33/00
Inventor 王娟王隽舒疏张冰雪田佳彬王刚伟
Owner NO 719 RES INST CHINA SHIPBUILDING IND
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