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Low-rigidity suspension system and implementation method thereof

A realization method and low-rigidity technology, applied in the low-rigidity suspension system and its realization field, can solve the problems of complex process, complicated operation, longitudinal rigidity of restraint load, etc. Effect

Active Publication Date: 2012-10-17
SHANGHAI SATELLITE ENG INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional steel wire rope suspension method completely constrains the longitudinal stiffness of the load, which obviously does not meet the requirements of the weightless state.
[0004] Conventional low-stiffness suspension system design methods include linear spring system design, nonlinear spring system design, parallel structure design, and disc spring-linear spring joint design. , processing, complex process and long production cycle
At the same time, due to the extremely small number of components used in the aerospace field, the relevant manufacturers mostly refuse to produce and process them on the grounds of insufficient production.

Method used

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  • Low-rigidity suspension system and implementation method thereof
  • Low-rigidity suspension system and implementation method thereof

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Effect test

Embodiment 1

[0034] The implementation method of the low-rigidity suspension system provided in this embodiment includes the following steps:

[0035] Step 1, choose elastic rope; elastic rope is commonly used for bungee jumping latex silk elastic rope, its diameter is Φ10mm;

[0036] Step 2, intercept the elastic rope of unit length, measure the elongation of the elastic rope under the action of different weights by the method of accumulating weights per unit weight, and obtain the stiffness characteristics of the stiffness k of the elastic rope per unit length and the mass of the weight m. Curve; unit length is 2.05m;

[0037] Step 3. According to the stiffness characteristic curve of the elastic rope per unit length in step 2, select the weight m corresponding to the area in the stiffness characteristic curve of the elastic rope where the stiffness changes are relatively stable, and determine the suspended object weight M that the elastic rope can bear;

[0038] Step 4. Select n pieces of elast...

Embodiment 2

[0051] This embodiment is a low-rigidity suspension system realized by the method provided in Embodiment 1.

[0052] Such as figure 1 As shown, this embodiment includes several elastic cords 1 and connecting pieces. Several elastic cords 1 are connected by the connecting pieces to form a suspension system. The connecting pieces include aluminum pressing rings 3 and "U"-shaped buckles 2, which are used for "U"-shaped buckles 2. To connect a number of elastic cords 1, the aluminum pressing ring 3 is used to fix the U"-shaped buckle and the elastic cord 1.

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Abstract

The invention discloses a low-rigidity suspension system and an implementation method of the low-rigidity suspension system. The low-rigidity suspension system is implemented by obtaining design parameters such as length of elastic strings and number of elastic strings and the like required by the low-rigidity suspension system and by mastering a parallel system of a single unit length elastic string and a plurality of unit length elastic strings as well as characteristics of n-time unit length elastic strings by means of characteristics of good vertical nonlinearity and low-rigidity of the elastic strings. According to the low-rigidity suspension system and the implementation method of the low-rigidity suspension system provided by the invention, the rigidity characteristic of the elastic strings is obtained by a simple unit weight accumulating test method by means of current common elastic strings, and the low-rigidity suspension system which meets the demand of test can be erected rapidly through simple and convenient installation tools. The suspension system can particularly realize vertical i.e. gravity-direction lower rigidity, while the transverse rigidity can be used to control the length of the elastic string to obtain the low rigidity. The low-rigidity suspension system provided by the invention has the advantages of simplicity, rapidness, flexible design, low cost and the like, so convenience is provided for the implementation of the low-rigidity suspension test.

Description

Technical field [0001] The invention relates to a method for simulating an on-rail weightlessness state, in particular to a low-rigidity suspension system and an implementation method thereof. Background technique [0002] With the development of aerospace technology, the performance testing methods for sensitive loads need to be continuously updated. How to achieve the performance testing of sensitive loads under weightlessness is particularly important. [0003] Generally, the suspension test is used to simulate the on-orbit performance of the load in the aerospace field. The vibration frequency of the current satellite structure platform is mostly higher than 5Hz. If the influence of the suspension system frequency on the test is required to be negligible, the suspension system is required The natural frequency is not higher than 1 / 10 of the system frequency. Therefore, if the weightlessness simulation test is performed on the satellite or payload, the longitudinal natural freq...

Claims

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Application Information

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IPC IPC(8): B64G7/00
Inventor 申军烽周徐斌赵发刚蒋国伟薛景赛沈海军
Owner SHANGHAI SATELLITE ENG INST
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