DE1211444B - Fluid spring with temperature compensation - Google Patents

Fluid spring with temperature compensation

Info

Publication number
DE1211444B
DE1211444B DEV26031A DEV0026031A DE1211444B DE 1211444 B DE1211444 B DE 1211444B DE V26031 A DEV26031 A DE V26031A DE V0026031 A DEV0026031 A DE V0026031A DE 1211444 B DE1211444 B DE 1211444B
Authority
DE
Germany
Prior art keywords
spring
liquid
temperature compensation
free piston
fluid spring
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
DEV26031A
Other languages
German (de)
Inventor
Dipl-Ing Karl Bittel
Hans-Dieter Schulze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KONSTRUKTION ZEK HYDRAULIK
ZENTRALE ENTWICKLUNG VEB
Original Assignee
KONSTRUKTION ZEK HYDRAULIK
ZENTRALE ENTWICKLUNG VEB
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.)
Filing date
Publication date
Application filed by KONSTRUKTION ZEK HYDRAULIK, ZENTRALE ENTWICKLUNG VEB filed Critical KONSTRUKTION ZEK HYDRAULIK
Priority to DEV26031A priority Critical patent/DE1211444B/en
Priority claimed from BE649269A external-priority patent/BE649269A/xx
Publication of DE1211444B publication Critical patent/DE1211444B/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F16F9/08—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall
    • F16F9/082—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall characterised by the hydropneumatic accumulator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F5/00—Liquid springs in which the liquid works as a spring by compression, e.g. combined with throttling action; Combinations of devices including liquid springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/52—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics in case of change of temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)

Description

BUNDESREPUBLIK DEUTSCHLAND FEDERAL REPUBLIC OF GERMANY

DEUTSCHESGERMAN

PATENTAMTPATENT OFFICE

AUSLEGESCHRIFTEDITORIAL

Int. α.:Int. α .:

F06fF06f

Deutsche Kl.: 47 a-17German class: 47 a-17

Nummer: 1211444Number: 1211444

Aktenzeichen: V 26031XII/47 aFile number: V 26031XII / 47 a

Anmeldetag: 25. Mai 1964 Filing date: May 25, 1964

Auslegetag: 24. Februar 1966Opening day: February 24, 1966

Die Erfindung betrifft eine Flüssigkeitsfeder mit von der Temperatur weitgehend unabhängiger Vorlast durch eine zusätzliche, von dynamisch hydraulischen Stößen unbeeinflußte, nachgeschaltete Feder, die von der Flüssigkeitsfeder durch einen Freikolben getrennt ist, insbesondere zu verwenden für Zug- und Stoßvorrichtungen.The invention relates to a liquid spring with a preload that is largely independent of the temperature by an additional, downstream spring that is not influenced by dynamic hydraulic shocks, which is separated from the liquid spring by a free piston, especially to be used for pulling and pulling Bumpers.

Es sind bisher verschiedene Flüssigkeitsfedern mit Temperaturausgleich bekannt. Es gibt Kombinationen zwischen Flüssigkeitsfedern und mechanischen Federn, die zumindest im Bereich der Vorspannkraft zusammenwirken, und es gibt mit Flüssigkeit gefüllte, federbelastete Vorrichtungen, die in ausgefahrener Stellung über ein Ventil mit dem Federkammerraum in Verbindung stehen, um die Flüssigkeit der Feder aufzufüllen.Various liquid springs with temperature compensation are known so far. There are combinations between liquid springs and mechanical springs, at least in the area of the preload force cooperate, and there are liquid-filled, spring-loaded devices that extend in Position via a valve with the spring chamber space in communication to the fluid of the spring to fill up.

Diese Vorrichtungen ermöglichen nur die Einstellung einer geringen Vorlast. Außerdem bauen sie sehr aufwendig und zum Teil sperrig.These devices only allow a low preload to be set. They also build very complex and sometimes bulky.

Der Erfindung liegt die Aufgabe zugrunde, eine Flüssigkeitsfeder mit einer von der Temperatur weitgehend unabhängigen, erhöhten Vorlast unter Vermeidung aufwendiger und sperriger Konstruktionen zu schaffen.The invention is based on the object of a liquid spring with a temperature largely independent, increased preload while avoiding complex and bulky constructions to accomplish.

Erfindungsgemäß geschieht dies dadurch, daß die zusätzliche Feder ein Gasfeder ist. Der Freikolben ist von der Flüssigkeit durch eine Kapillaröffnung beaufschlagt und in seiner Einfederung durch einen mechanischen, ein verbleibendes Gasvolumen garantierenden Anschlag begrenzt.According to the invention, this is done in that the additional spring is a gas spring. The free piston is acted upon by the liquid through a capillary opening and its deflection by a mechanical stop guaranteeing a remaining gas volume.

An Hand eines in der Zeichnung dargestellten Ausführungsbeispiels soll die Erfindung näher erläutert werden.The invention is to be explained in more detail using an exemplary embodiment shown in the drawing will.

Die Gasfeder ist als temperaturausgleichende Vorrichtung in baulicher Kombination in die Kolbenstange 8 einer Flüssigkeitsfeder 1 für Zug-Druck-Beanspruchung eingebaut. Ein axial beweglicher Freikolben 4 trennt den Arbeitsraum 2 der Flüssigkeitsfeder 1 von dem Arbeitsraum 3 der Gasfeder. Der Arbeitsraum 3 der Gasfeder ist nach außen durch ein Verschlußstück 7 abgeschlossen. Die axiale Bewegung des Freikolbens 4 ist durch Anschläge 5; 9 begrenzt, wobei der zur Gasfeder gehörige Anschlag 9 bei Anliegen des Freikolbens 4 ein verbleibendes Gasvolumen garantiert und damit eine zu hohe Kompression des Gases mit starker örtlicher Erwärmung vermeidet. Durch das Vorordnen einer Kapillaröffnung 6 Flüssigkeitsfeder mit TemperaturausgleichThe gas spring is a temperature-compensating device in a structural combination in the piston rod 8 built in a liquid spring 1 for tension-compression loading. An axially movable free piston 4 separates the working space 2 of the liquid spring 1 from the working space 3 of the gas spring. Of the The working space 3 of the gas spring is closed off from the outside by a closure piece 7. The axial movement of the free piston 4 is by stops 5; 9 limited, the stop 9 belonging to the gas spring when applied of the free piston 4 guarantees a remaining gas volume and thus too high a compression of the gas with strong local heating avoids. By pre-arranging a capillary opening 6 Liquid spring with temperature compensation

Anmelder:Applicant:

VEB Zentrale Entwicklung und KonstruktionVEB central development and construction

ZEK Hydraulik,ZEK hydraulics,

Leipzig, Dr.-Kurt-Fischer-Str. 33Leipzig, Dr.-Kurt-Fischer-Str. 33

Als Erfinder benannt:Named as inventor:

Dipl.-Ing. Karl Bittel, Markkleeberg bei Leipzig; Hans-Dieter Schulze, LeipzigDipl.-Ing. Karl Bittel, Markkleeberg near Leipzig; Hans-Dieter Schulze, Leipzig

— hier als Bohrung im Anschlag 5 — innerhalb des Arbeitsraumes 2 der Flüssigkeitsfeder 1, ist der Freikolben 4 von dynamisch hydraulischen Stößen unbeeinflußt. - here as a hole in the stop 5 - within the working space 2 of the liquid spring 1, the free piston is 4 unaffected by dynamic hydraulic shocks.

Die Wirkungsweise der erfindungsgemäßen Flüssigkeitsfeder ist folgende:The mode of operation of the liquid spring according to the invention is as follows:

Die durch Temperaturdifferenzen auftretende Volumen- und die damit verbundene Vorlaständerung im entlasteten Zustand der Flüssigkeitsfeder 1 wird durch das hochkomprimierte Gas im Arbeitsraum 3 ausgeglichen. Dabei wird der Freikolben 4 in Richtung des Anschlages 5 bzw. 9 geschoben. Die Kapillaröffnung 6 fängt die dynamisch hydraulischen Stöße auf den Freikolben 4 ab und macht ihn damit unabhängig von der Hubfrequenz der Flüssigkeitsfeder 1.The volume change and the associated flow change caused by temperature differences In the unloaded state of the liquid spring 1, the highly compressed gas in the working space 3 balanced. The free piston 4 is pushed in the direction of the stop 5 or 9. The capillary opening 6 absorbs the dynamic hydraulic shocks on the free piston 4 and thus makes it independent on the stroke frequency of the liquid spring 1.

Claims (1)

Patentanspruch:Claim: Flüssigkeitsfeder mit Temperaturausgleich durch eine zusätzliche, von dynamisch hydraulischen Stößen unbeeinflußte, nachgeschaltete Feder, die von der Flüssigkeitsfeder durch einen Freikolben getrennt ist, dadurch gekennzeichnet, daß die zusätzliche Feder eine Gasfeder (3) ist, während der Freikolben (4) von der Flüssigkeit durch eine Kapillaröffnung (6) beaufschlagt wird und seine Einfederung durch einen mechanischen Anschlag (9) begrenzt ist.Liquid spring with temperature compensation through an additional dynamic hydraulic spring Shocks unaffected, downstream spring, which is from the liquid spring by a Free piston is separated, characterized that the additional spring is a gas spring (3), while the free piston (4) of the Liquid is acted upon through a capillary opening (6) and its deflection by a mechanical stop (9) is limited. In Betracht gezogene Druckschriften:
Deutsche Auslegeschrift Nr. 1 095 057;
USA.-Patentschrift Nr. 2 930 608.Considered publications:
German Auslegeschrift No. 1 095 057;
U.S. Patent No. 2,930,608. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DEV26031A 1964-05-25 1964-05-25 Fluid spring with temperature compensation Pending DE1211444B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEV26031A DE1211444B (en) 1964-05-25 1964-05-25 Fluid spring with temperature compensation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEV26031A DE1211444B (en) 1964-05-25 1964-05-25 Fluid spring with temperature compensation
BE649269A BE649269A (en) 1964-06-15 1964-06-15

Publications (1)

Publication Number Publication Date
DE1211444B true DE1211444B (en) 1966-02-24

Family

ID=25655936

Family Applications (1)

Application Number Title Priority Date Filing Date
DEV26031A Pending DE1211444B (en) 1964-05-25 1964-05-25 Fluid spring with temperature compensation

Country Status (1)

Country Link
DE (1) DE1211444B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387840A (en) * 1966-10-07 1968-06-11 Westinghouse Air Brake Co Suspension unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930608A (en) * 1956-04-04 1960-03-29 Cleveland Pneumatic Ind Inc Liquid spring
DE1095057B (en) * 1956-01-23 1960-12-15 Cleveland Pneumatic Tool Co Fluid pen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1095057B (en) * 1956-01-23 1960-12-15 Cleveland Pneumatic Tool Co Fluid pen
US2930608A (en) * 1956-04-04 1960-03-29 Cleveland Pneumatic Ind Inc Liquid spring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387840A (en) * 1966-10-07 1968-06-11 Westinghouse Air Brake Co Suspension unit

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