BE448482A - - Google Patents

Info

Publication number
BE448482A
BE448482A BE448482DA BE448482A BE 448482 A BE448482 A BE 448482A BE 448482D A BE448482D A BE 448482DA BE 448482 A BE448482 A BE 448482A
Authority
BE
Belgium
Prior art keywords
layers
elastic
emi
rubber
vibrations
Prior art date
Application number
Other languages
French (fr)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE448482A publication Critical patent/BE448482A/fr

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00Springs
    • F16F1/36Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/40Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers consisting of a stack of similar elements separated by non-elastic intermediate layers
    • F16F1/406Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers consisting of a stack of similar elements separated by non-elastic intermediate layers characterised by the shape of the elastic elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F3/00Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
    • F16F3/08Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber
    • F16F3/087Units comprising several springs made of plastics or the like material
    • F16F3/093Units comprising several springs made of plastics or the like material the springs being of different materials, e.g. having different types of rubber

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Vibration Prevention Devices (AREA)

Description

       

  '*SUPPORTS AMORTISSEURS POUR MACHINES"

  
On connaît les supports élastiques amortissant les bruits et les vibrations des machines, qui sont constitués par des parties en caoutchouc insérées entre la machine et l'emba� sement. La présente invention se rapporte aux supports de ce type et vise à en améliorer l'efficacité en réduisant l'ampleur des déformations et en faisant varier entre des limites très grandes la fréquence propre des vibrations du support, de manière à rendre possible de choisir la fréquence la plus avantageuse pour amortir les vibrations qu'on doit éteindre.

  
A cet effet, les supports élastiques sont constitués par au moins deux couches en caoutchouc ayant des caractéristiques élastiques diverses séparées par des couches de matière amortissante, p.ex. en plomb ou autres métaux analogues, en feuilles éventuellement perforées ou en matériel feuilleté tel que les toiles caoutchoutées, le feutre ou les tissus épais

  
caoutchoutés. 

  
Afin d'éclaircir la nature et l'invention en décris ra ci-après, en se reportant aux dessins ci-joints et à simple titre illustratif, l'application pratique du principe fondamen� tal à un support connu (conforme au brevet n[deg.] 345*103) et à un support usuel constitué par un bloc en caoutchouc sollicité à la compression et fixé entre deux plaques métalliques de montage/

  
Dans ces dessins :
Fige 1 est une prespective partiellement sectionnée du bloc élastique fixé entre deux plaques métalliques ; Fig. 2 en est une section partielle ; Fig. 3 est la perspective d'une plaque perforée à interposer dans la forme d'exécution de la Fig. 1 ; Fig. 4 est la coupe d'un support de type spécial ; Fig. 5 est la perspective de la douille perforée à insérer entre les manchons en caoutchouc selon la Fig. 4.

  
Le support élastique amortisseur selon la Fig. 1 diffère des types connus en ce que le bloc en caoutchouc fixé

  
 <EMI ID=1.1> 

  
et séparées entre elles par des feuilles 8 de matière amortissanté (plomb, toile caoutchoutée ou analogues) préférablement

  
 <EMI ID=2.1> 

  
boulons passant par les trous 4 à l'embasement, et à l'aide

  
 <EMI ID=3.1> 

  
thétique, qui sont aptes à donner à ces couches une élasticité différente et par conséquent une fréquence propre de vibrations diverses. Dans la forme représentée il y a trois groupes, oonstitués par trois couches, et séparés par deux insertions 8 de matière rigide. Les couches plus élastiques sont alternées avec  <EMI ID=4.1> 

  
de amortissante sont de préférence perforées, de manière que

  
 <EMI ID=5.1> 

  
tituées par des mélanges donnant des élasticités différentes ; entre ces couches sont insérées des douilles métalliques 13 perforées qui interrompent partiellement le contact direct, et tout l'ensemble est renfermé entre les manchons métalliques 9-10.

  
Il est évident que le même principe pourra être appliqué dans un grand nombre de dispositifs divers comportant des parties élastiques, pour amortir les vibrations mécaniques et sonores,



  '* SHOCK ABSORBERS FOR MACHINES "

  
We know the elastic supports damping the noises and vibrations of the machines, which are constituted by rubber parts inserted between the machine and the packaging. safely. The present invention relates to supports of this type and aims to improve their efficiency by reducing the extent of the deformations and by varying between very large limits the natural frequency of the vibrations of the support, so as to make it possible to choose the most advantageous frequency to damp the vibrations that must be extinguished.

  
For this purpose, the elastic supports consist of at least two layers of rubber having various elastic characteristics separated by layers of damping material, eg lead or other similar metals, possibly perforated sheets or laminated material such as rubberized canvas, felt or heavy fabrics

  
rubberized.

  
In order to clarify the nature and the invention described below, with reference to the accompanying drawings and for illustrative purposes only, the practical application of the basic principle &#65533; tal to a known support (in accordance with patent n [deg.] 345 * 103) and to a usual support consisting of a rubber block under compression and fixed between two metal mounting plates /

  
In these drawings:
Fig. 1 is a partially sectioned view of the elastic block fixed between two metal plates; Fig. 2 is a partial section; Fig. 3 is the perspective of a perforated plate to be interposed in the embodiment of FIG. 1; Fig. 4 is the section of a special type support; Fig. 5 is the perspective of the perforated bush to be inserted between the rubber sleeves according to FIG. 4.

  
The elastic shock-absorbing support according to FIG. 1 differs from known types in that the rubber block attached

  
 <EMI ID = 1.1>

  
and separated from each other by sheets 8 of damped material (lead, rubberized fabric or the like) preferably

  
 <EMI ID = 2.1>

  
bolts passing through holes 4 at the base, and using

  
 <EMI ID = 3.1>

  
thetic, which are able to give these layers a different elasticity and consequently a natural frequency of various vibrations. In the form shown there are three groups, oonstitués by three layers, and separated by two insertions 8 of rigid material. The more elastic layers are alternated with <EMI ID = 4.1>

  
of shock absorbers are preferably perforated, so that

  
 <EMI ID = 5.1>

  
titués by mixtures giving different elasticities; between these layers are inserted perforated metal sleeves 13 which partially interrupt the direct contact, and the whole assembly is enclosed between the metal sleeves 9-10.

  
It is obvious that the same principle can be applied in a large number of various devices comprising elastic parts, to damp mechanical and sound vibrations,


    

Claims (1)

REVENDICATION ET RESUME <EMI ID=6.1> CLAIM AND SUMMARY <EMI ID = 6.1> au moins deux couches en caoutchouc ou autres matières analogie ayant des caractéristiques élastiques diverses interposées entre des couches de substance amortissante interposées entre les couches élastiques.- at least two layers of rubber or other similar material having various elastic characteristics interposed between layers of damping substance interposed between the elastic layers.
BE448482D 1942-02-27 BE448482A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT234838X 1942-02-27

Publications (1)

Publication Number Publication Date
BE448482A true BE448482A (en)

Family

ID=11207490

Family Applications (1)

Application Number Title Priority Date Filing Date
BE448482D BE448482A (en) 1942-02-27

Country Status (2)

Country Link
BE (1) BE448482A (en)
CH (1) CH234838A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE938281C (en) * 1952-02-02 1956-01-26 Miag Muehlenbau & Ind Gmbh Protective device
US2954101A (en) * 1959-01-19 1960-09-27 William E Corson Vehicle wheel chock
DE2706479C2 (en) * 1977-02-16 1984-05-30 Maschinenfabrik Stromag Gmbh, 4750 Unna Torsionally flexible coupling

Also Published As

Publication number Publication date
CH234838A (en) 1944-10-31

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