Low-dynamic-stiffness longitudinal loaded excitation device for rotor shaft system

A low dynamic stiffness, loading device technology, applied in the direction of measuring devices, vibration testing, mechanical parts testing, etc., can solve the problems that affect the test results and verification results, the longitudinal mode of the rotating shaft system and the deviation of vibration and noise rules, etc., to achieve Effect of low dynamic stiffness, low longitudinal load, and reduced dynamic stiffness

Pending Publication Date: 2017-11-14
NO 719 RES INST CHINA SHIPBUILDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is equivalent to introducing an additional stiffness to the entire rotating shafting system, which will directly change the longitudinal inherent characteristics of the entire propulsion shaft

Method used

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  • Low-dynamic-stiffness longitudinal loaded excitation device for rotor shaft system
  • Low-dynamic-stiffness longitudinal loaded excitation device for rotor shaft system
  • Low-dynamic-stiffness longitudinal loaded excitation device for rotor shaft system

Examples

Experimental program
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Effect test

Embodiment Construction

[0019] The present invention will be described in more detail below with examples in conjunction with the accompanying drawings.

[0020] A longitudinal load loading device for a rotating shaft system with low dynamic stiffness characteristics of the present invention is composed as follows: a follow-up rotation module, a loading spring, a loading plate 7, a loading screw 8, a fixed support 10, an electromagnetic suction module 11, and an exciting rod 12 And electromagnetic exciter 13, wherein the follow-up rotation module is composed of thrust rolling bearing 2, moving ring 3, compression cover 4 and lock nut 1, and the loading spring is composed of auxiliary spring 6 and main spring 9.

[0021] The inner ring of the thrust rolling bearing 2 is set on the front end of the loading plate 7, and the lock nut 1 is an annular structure, which is processed with an internal thread, which is the same as the external thread specification at the front end of the loading plate, and the l...

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PUM

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Abstract

The invention provides a longitudinal loading device with low dynamic stiffness characteristic for a rotor shaft system. The device comprises a servo rotation module, a loading disc, a main spring, an auxiliary spring, a loading screw rod, an electromagnetic suction module, an excitation rod, an electromagnetic vibration exciter and a fixing support, wherein one end of the loading screw rod is fixed on a front panel of the fixing support, and the other end of the loading screw rod runs through the loading disc; the main spring is arranged on the loading screw rod between the fixing support and the loading disc in a sleeving manner; the auxiliary spring is arranged at the tail end of the loading screw rod in a sleeving manner, and is matched with a bolt to compress the loading screw rod and the loading disc; the servo rotation module is arranged at the front end of the loading disc, and is connected with the rotor shaft system; the electromagnetic suction module is arranged on the front panel of the fixing support, and the electromagnetic exciter is rigidly fixed or flexibly suspended on the fixing support; the excitation rod runs through an opening in the front panel of the fixing support and an intermediate hole of the electromagnetic suction module to be fixed at the center of the rear end face of the loading disc. The device can avoid the influence on the longitudinal coherent characteristics of the rotor shaft system caused by a longitudinal loading device.

Description

technical field [0001] The invention belongs to the technical field of vibration and noise control and test of a rotating shaft system, and in particular relates to a low dynamic stiffness longitudinally loaded vibration excitation device for a rotating shaft system. Background technique [0002] Ship propulsion shafting is a key component of the ship propulsion system, generally composed of main shaft, radial support bearing, thrust bearing, coupling and other components, responsible for transmitting the torque of the power equipment to the propeller and at the same time transmitting the thrust generated by the rotation of the propeller An important task for the hull. The vibration of propulsion shafting will not only cause noise, but also affect the reliability of shafting and related components. Therefore, the strength and vibration of propulsion shafting has always been an important content of ship design, and has been paid attention to by engineers and scientific resea...

Claims

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Application Information

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IPC IPC(8): G01M13/02G01M7/02
CPCG01M7/022G01M13/027G01M13/028
Inventor 钱大帅施卫华华如南苏胜利易足希
Owner NO 719 RES INST CHINA SHIPBUILDING IND
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