CS260157B1 - Flexible mounting for vibration isolation of bodies - Google Patents

Flexible mounting for vibration isolation of bodies Download PDF

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Publication number
CS260157B1
CS260157B1 CS85734A CS73485A CS260157B1 CS 260157 B1 CS260157 B1 CS 260157B1 CS 85734 A CS85734 A CS 85734A CS 73485 A CS73485 A CS 73485A CS 260157 B1 CS260157 B1 CS 260157B1
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CS
Czechoslovakia
Prior art keywords
spring
vibrations
bodies
isolating
flexible mounting
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CS85734A
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Czech (cs)
Slovak (sk)
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CS73485A1 (en
Inventor
Marian Zigo
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Marian Zigo
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Priority to CS85734A priority Critical patent/CS260157B1/en
Publication of CS73485A1 publication Critical patent/CS73485A1/en
Publication of CS260157B1 publication Critical patent/CS260157B1/en

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Abstract

Konštrukcia pružného uloženia zlepšuje izoláclu kmitania telies, vedených pomocou mechanizmu v požadovanom smere, využívajúce pružinu, ktorá pdsobí na odpružené teleso pomocou pákového prevůdu a aspoň jedného tlmiča kmitania, tým, že odpružené teleso je podopreté koncom dlhšieho ramena na konzole otočné uloženej páky, ku ktorej na kratšom ramene je připojená pružina. Opísaný mechanizmus je schopný podlá vlastností použitej pružiny ocelověj, pneumatickej alebo hydraulického akumulátora, izolovat kmitanie telies v rozsahu tých budiacich frekvenclí, ktoré sa vyskytujú pri činnostiach mobilných strojov. Preto uvedené pružné uloženie je vhodné hlavně na izoláciu kmitania a rázov pósobiacich na obsluhu mobilných strojov, alebo na izoláciu kmitania pósobiaceho na citlivé přístroje a zariadenia.The design of the flexible mounting improves the isolation of the vibrations of the bodies guided by means of a mechanism in the desired direction, using a spring that acts on the sprung body by means of a lever transmission and at least one vibration damper, by the fact that the sprung body is supported by the end of the longer arm on the console of a pivoted lever, to which a spring is connected on the shorter arm. The described mechanism is capable, depending on the properties of the steel, pneumatic or hydraulic accumulator spring used, of isolating the vibrations of the bodies in the range of those excitation frequencies that occur during the operation of mobile machines. Therefore, the aforementioned flexible mounting is suitable mainly for isolating vibrations and shocks acting on the operation of mobile machines, or for isolating vibrations acting on sensitive devices and equipment.

Description

Vynález sa týká izolácie kmitania predmetov vystavených kmitaniu a rázom, ktoré sú vedené pomocou mechanizmu v požadovanom smere. Na odpruženie mechanizmus využívá pružinu, ktorá posobí na odpruženú hmotu pomocou pákového převodu a aspoň jedného tlmiča kmitania.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to the isolation of vibrations of objects subjected to vibrations and shocks which are guided by a mechanism in the desired direction. For cushioning, the mechanism uses a spring that moves on the cushioned mass by means of a lever transmission and at least one vibration damper.

Doteraz známe pružné uloženia, ktoré využívajú nožnicový mechanizmus, využívajú tento mechanizmus súčasne ku vedeniu odpruženého telesa v požadovanom smere, aj ku vytvoreniu pákového převodu medzi pružinou a silou vyvolanou tiažou odpruženého telesa. V důsledku uvedeného spůsobu zaťaženia nožnicový mechanizmus prenáša sily od tiaže do ložísk a vodiacich dráh, v ktorých sa pohybujú posúvajúce sa konce nožnicového mechanizmu. Preto ak je tento mechanizmus vystavený kmitaniu s malými amplitúdami, ale vyššími frekvenciami, mechanizmus v důsledku třecích sil nestačí sledovat rýchle změny směru budiacich sil. Tuhosť pružného uloženia je v takom případe určená tuhosťou pák, ktoré tvoria nožnicový mechanizmus. V důsledku toho pri uvedenom type budiacich sil mechanizmus stráca schopnosť izolovat chvenie vyvolané týmito silami.Previously known resilient mountings that use a scissor mechanism utilize this mechanism simultaneously to guide the sprung body in the desired direction, as well as to create a lever transmission between the spring and the force exerted by the weight of the sprung body. As a result of this loading method, the scissor mechanism transmits the forces from the weight to the bearings and the guide tracks in which the shearing end of the scissor mechanism moves. Therefore, if this mechanism is subjected to vibrations with small amplitudes but higher frequencies, the mechanism due to frictional forces is not enough to track the rapid changes in the direction of excitation forces. The rigidity of the resilient mounting is in this case determined by the stiffness of the levers which form the scissor mechanism. As a result, in said type of excitation force, the mechanism loses the ability to isolate the shake induced by these forces.

Tieto nedostatky možno odstrániť pružným uložením pre izoláciu kmitania telies vedených pomocou mechanizmu v požadovanom smere, ktoré využívá pružinu působiacu na odpružené teleso pomocou pákového převodu a aspoň jedného tlmiča kmitania tak, že odpružené teleso je podopreté koncom dlhšieho ramena páky, otočné uloženej na konzole, pričom na kratšom ramene páky je připojená pružina.These drawbacks can be eliminated by a resilient mounting for isolating the oscillation of the bodies guided by the mechanism in the desired direction, which uses a spring acting on the spring body by means of a lever transmission and at least one vibration damper such that the spring body is supported by the end of the longer lever arm rotatably mounted on the bracket, a spring is attached to the shorter lever arm.

Navrhované pružné uloženie oddeíuje mechanizmus, ktorý vedie odpružené teleso v požadovanom smere, od mechanizmu, ktorý prenáša sily od tiaže odpruženého telesa na pružinu. Tým znížime trecie sily v nožnicovom mechanizme hlavně v miestach koncov pák nožnicového mechanizmu, ktoré sa pohybujú v ich vodiacich dráhách.The proposed resilient mounting separates the mechanism that guides the sprung body in the desired direction from the mechanism that transmits the forces from the weight of the sprung body to the spring. This will reduce the frictional forces in the scissor mechanism mainly at the ends of the scissor mechanism levers that move in their guide tracks.

Navrhované pružné uloženie má přednost aj v tom, že mechanizmus pružného uloženia má menšiu konštrukčná výšku, pretože pružina s pákou nemusí byť umiestnená pod odpruženým telesom. Táto vlastnost je důležitá hlavně pri použití sedačky v strojoch, kde je pod sedačkou malá vzdialenosť medzi sedačkou a podlahou. Například pri určitých druhoch traktorov, pri nakladačoch s přibrzďováním kolies, alebo pri horských kosačkách a samozberacích strojoch.The proposed resilient mounting also has the advantage that the resilient mounting mechanism has a lower structural height, since the spring with the lever need not be located below the sprung body. This feature is especially important when using a seat in machines where there is a small distance between the seat and the floor under the seat. For example, for certain types of tractors, for wheel loaders or for mountain mowers and self-picking machines.

Pružné uloženie je schematicky znázorněné na obrázku. Na odpružené teleso 4 je připevněný nožnicový mechanizmus 1 a tlmiČ kmitov 6. Páka 2 otočné uložená na konzole 5 na dlhšom ramene podpiera odpružené teleso 4. Páka 2 na kratšom ramene je spojená s pružinou 3.The resilient mounting is shown schematically in the figure. A scissor mechanism 1 and a vibration damper 6 are attached to the spring body 4. The lever 2 rotatably mounted on the bracket 5 on the longer arm supports the spring body 4. The lever 2 on the shorter arm is connected to the spring 3.

Pri činnosti pružného uloženia funkciu vedenia odpruženého telesa 4 v priestore vykonává nožnicový mechanizmus 1 a funkciu přenosu sil medzi odpruženým telesom 4 a pružinou 3 vykonává páka 2, pričom pohyb odpruženého telesa 4 tlmí tlmič 6.In the operation of the resilient mounting, the function of guiding the spring-loaded body 4 in the space is performed by the scissor mechanism 1 and the lever 2 functions in the force transfer function between the spring body 4 and the spring 3, the movement of the spring body 4 being damped by the silencer 6.

Opísaný mechanizmus je schopný podfa vlastností použitej pružiny ocelověj, pneumatickej, alebo hydraulického akumulátore izolovat kmitanie telies v rozsahu tých budiacich frekvencii, ktoré sa vyskytujú pri činnosti mobilných strojov. Preto uvedené pružné uloženie je vhodné hlavně na izoláciu kmitania a rázov působiacich na obsluhu mobilných strojov, alebo na izoláciu kmitaňia působiaceho na citlivé přístroje a zariadenia.The described mechanism is capable of isolating the body oscillations within the range of those excitation frequencies occurring in the operation of the mobile machines according to the properties of the steel, pneumatic, or hydraulic accumulator spring used. Therefore, said resilient mounting is particularly suitable for insulating vibrations and shocks affecting the operation of mobile machines, or for insulating vibrations acting on sensitive devices and devices.

Claims (1)

PREDMETSUBJECT Pružné uloženie pre izoláciu kmitania telies vedených pomocou mechanizmu v požadovanom smere využívajúce pružinu, ktorá působí na odpružené teleso pomocou pákového převodu a aspoň jedného tlmiča kmiVYNALEZU tania, vyznačujúce sa tým, že teleso (4) je podopreté koncom dlhšieho ramena na konzole (5) otočné uloženej páky (2), ku ktorej na kratšom ramene je připojená pružina (3).A spring mount for isolating oscillations of bodies guided by a mechanism in a desired direction using a spring acting on the spring body by means of a lever transmission and at least one thrust damper, characterized in that the body (4) is supported by the long arm end on the bracket (5) a lever (2) to which a spring (3) is attached to the shorter arm.
CS85734A 1985-01-04 1985-01-04 Flexible mounting for vibration isolation of bodies CS260157B1 (en)

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CS85734A CS260157B1 (en) 1985-01-04 1985-01-04 Flexible mounting for vibration isolation of bodies

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CS85734A CS260157B1 (en) 1985-01-04 1985-01-04 Flexible mounting for vibration isolation of bodies

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CS73485A1 CS73485A1 (en) 1988-05-16
CS260157B1 true CS260157B1 (en) 1988-12-15

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