DE2203122A1 - HYDRAULIC TESTING MACHINE - Google Patents
HYDRAULIC TESTING MACHINEInfo
- Publication number
- DE2203122A1 DE2203122A1 DE19722203122 DE2203122A DE2203122A1 DE 2203122 A1 DE2203122 A1 DE 2203122A1 DE 19722203122 DE19722203122 DE 19722203122 DE 2203122 A DE2203122 A DE 2203122A DE 2203122 A1 DE2203122 A1 DE 2203122A1
- Authority
- DE
- Germany
- Prior art keywords
- piston
- cylinder
- testing machine
- hydraulic testing
- annular
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
Carl Schenck Maschinenfabrik GmbH 562 Carl Schenck Maschinenfabrik GmbH 562
20. Januar 197220th January 1972
Hydraulische Prüfmaschine.Hydraulic testing machine.
Die Erfindung betrifft eine hydraulische Prüfmaschine mit einer Kolben-Zylinder-Einheit zur Erzeugung einer dynamischen Wechsellast und einer Kolben-Zylinder-Einheit zur Erzeugung einer statischen Vorlast.The invention relates to a hydraulic testing machine with a Piston-cylinder unit for generating a dynamic alternating load and a piston-cylinder unit for generating a static preload.
Bei der Prüfung von Bauteilen oder Materialproben ist es erwünscht, den Prüfling gleichzeitig mit einer statischen Vorlast und einer dynamischen Wechsellast zu beaufschlagen. Eine bekannt gewordene Prüfmaschine besteht aus einem ersten hydraulischen Zylinder mit Kolben, der die statische Vorlast erzeugt. An diesen ersten Zylinder sind Druckspeicher angeschlossen, die die Aufgabe haben, Druckstöße im Zylinder durch die raschen Bewegungen des Kolbens zu verhindern. Ein zweiter hydraulischer Zylinder mit Kolben dient zur Erzeugung der dynamischen Wechsellast. Die beiden Kolben sind miteinander kraftschlüssig verbunden.When testing components or material samples, it is desirable to apply a static preload and a dynamic alternating load to the test item at the same time. One well-known testing machine consists of a first hydraulic cylinder with piston, which the static preload generated. Pressure accumulators are connected to this first cylinder, which have the task of causing pressure surges in the cylinder to prevent the rapid movements of the piston. A second hydraulic cylinder with piston is used to generate the dynamic Alternating load. The two pistons are positively connected to one another.
Der Nachteil der bekannten Prüfmaschine besteht in seiner großen Baulänge und in der Notwendigkeit den,die dynamische Wechsellast erzeugenden hydraulischen Zylinder besonders zu führen. Dies führt zu einem hohen Verbrauch an zum Teil sehr hochwertigen und sehr teueren Material.The disadvantage of the known testing machine is its large overall length and the need for the dynamic alternating load especially to lead generating hydraulic cylinder. This leads to a high consumption of what are sometimes very high quality products and very expensive material.
Der Erfindung liegt die Aufgabe zugrunde, eine Prüfmaschine der eingangs erwähnten Art zu schaffen, bei der die Baulänge vermindert und der Materialverbrauch eingeschränkt werden kann. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß eine Kolbenstange eines Zylinders hohl ausgebildet ist und Wandung als Ringkolben wirkt, der in einen fest mit einem Gehäuse verbundenen Ringzylinder eingreift.The invention is based on the object of creating a testing machine of the type mentioned at the outset, in which the overall length can be reduced and the material consumption can be restricted. This object is achieved according to the invention in that a piston rod of a cylinder is hollow and Wall acts as an annular piston which engages in an annular cylinder firmly connected to a housing.
309831/0644309831/0644
562562
-. 2-. 2
In weiterer Ausgestaltung der Erfindung sind Meßumformer, z.B. Weg*·, Geschwindigkeits-! oder Beschleunigungsaufnehmer durch den mittleren massiven Teil des Ringzylinders hindurchgeführt und fest mit dem Kolben verbunden. Damit wird es möglich, die Bewegungen des Kolbens auch regelungstechnisch zu beeinflussen.In a further embodiment of the invention, measuring transducers, e.g. distance *, speed! or accelerometers the central solid part of the ring cylinder passed through and firmly connected to the piston. This makes it possible to use the To influence movements of the piston also in terms of control technology.
Ein Ausführungsbeispiel der Erfindung wird anhand der Figur, in der im wesentlichen die Zylindereinheit schematised dargestellt ist, erläutert.An embodiment of the invention is based on the figure, in which the cylinder unit is essentially shown schematically is explained.
Die erfindungsgemäße Zylindereinheit einer hydraulischen Prüfmaschine besteht aus einem hydraulischen Zylinder 1 mit einem Kolben 2 der über die Druckleitungen 3 und 4 und das Servoventil 5 mit Drucköl beaufschlagt wird. Diese Anordnung dient zur Erzeugung der statischen Vorlast. Der hydraulische Zylinder 1 ist beiderseits des Kolbens 2 mit Druckspeichern β und 7 verbunden, die die Aufgabe haben, Druckstöße, hervorgerufen durch rasche Bewegungen des'Kolbens 2 bei dynamischer Wechsellast, zu verhindern.The cylinder unit according to the invention of a hydraulic testing machine consists of a hydraulic cylinder 1 with a piston 2 via the pressure lines 3 and 4 and the servo valve 5 is pressurized with oil. This arrangement is used to generate the static preload. The hydraulic cylinder 1 is connected on both sides of the piston 2 with accumulators β and 7, which have the task of reducing pressure surges caused by rapid movements of the piston 2 with dynamic alternating loads, to prevent.
Die dynamische Wechsellast wird durch den Ringkolben 8, der im wesentlichen aus.der hohlen Kolbenstange des Kolbens 2 besteht, aufgebracht. Dieser Ringkolben gleitet in einem ringförmigen Zylinder 9, der mit Hilfe der Druckleitung Io über das Servoventil 11 zur Erzeugung der dynamischen Wechsellast mit Drucköl beaufschlagt wird. Das Servoventil 11 arbeitet vorzugsweise derart, daß Resonanzschwingungen erzeugt werden.The dynamic alternating load is caused by the annular piston 8, which essentially consists of the hollow piston rod of the piston 2, upset. This annular piston slides in an annular cylinder 9, which with the help of the pressure line Io via the servo valve 11 is acted upon with pressure oil to generate the dynamic alternating load. The servo valve 11 operates preferentially such that resonance vibrations are generated.
Zur regelungstechnischen Erfassung der Bewegungen des Kolbens 2 sind Meßumformer, beispielsweise die hier dargestellten Wegaufnehmer 12 durch das mittlere, massive Teil des ringförmigen Zylinders 9 hindurchgeführt und fest mit dem Kolben 2 verbunden.Measuring transducers, for example the displacement transducers shown here, are used to record the movements of the piston 2 in terms of control technology 12 passed through the central, solid part of the annular cylinder 9 and firmly connected to the piston 2.
309r&3 1/0644309r & 3 1/0644
Claims (2)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722203122 DE2203122A1 (en) | 1972-01-24 | 1972-01-24 | HYDRAULIC TESTING MACHINE |
| GB5888672A GB1374510A (en) | 1972-01-24 | 1972-12-20 | Hydraulic testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722203122 DE2203122A1 (en) | 1972-01-24 | 1972-01-24 | HYDRAULIC TESTING MACHINE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2203122A1 true DE2203122A1 (en) | 1973-08-02 |
Family
ID=5833799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19722203122 Pending DE2203122A1 (en) | 1972-01-24 | 1972-01-24 | HYDRAULIC TESTING MACHINE |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2203122A1 (en) |
| GB (1) | GB1374510A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2943332A1 (en) * | 1979-10-26 | 1981-05-07 | Harald A. Dipl.-Ing. 6800 Mannheim Solmitz | Static and dynamic testing arrangement - has slidable bush moved hydraulically or mechanically to alter stroke path of disc piston |
| AT525554A4 (en) * | 2022-02-22 | 2023-05-15 | Hainzl Ind Gmbh | Process for controlling the pressure of an actuator for testing test specimens |
-
1972
- 1972-01-24 DE DE19722203122 patent/DE2203122A1/en active Pending
- 1972-12-20 GB GB5888672A patent/GB1374510A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2943332A1 (en) * | 1979-10-26 | 1981-05-07 | Harald A. Dipl.-Ing. 6800 Mannheim Solmitz | Static and dynamic testing arrangement - has slidable bush moved hydraulically or mechanically to alter stroke path of disc piston |
| AT525554A4 (en) * | 2022-02-22 | 2023-05-15 | Hainzl Ind Gmbh | Process for controlling the pressure of an actuator for testing test specimens |
| AT525554B1 (en) * | 2022-02-22 | 2023-05-15 | Hainzl Ind Gmbh | Process for controlling the pressure of an actuator for testing test specimens |
| EP4230992A1 (en) | 2022-02-22 | 2023-08-23 | Hainzl Industriesysteme GmbH | Method for controlling the pressure of an actuator for testing test samples |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1374510A (en) | 1974-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE102008035301B3 (en) | powder Press | |
| EP2981796B1 (en) | Force-measuring device | |
| EP3115191B1 (en) | Method and device for the reduction of cutting impact in a precision blanking press | |
| DE2600948A1 (en) | DEVICE FOR GENERATING A RAPID LOADING OF A BODY TO BE MACHINED AND / OR DEFORMED | |
| EP0686071B1 (en) | Process for closing channels conveying pressure medium in a housing | |
| DE2203122A1 (en) | HYDRAULIC TESTING MACHINE | |
| DE2202128C3 (en) | Hydraulic testing machine | |
| DE102017214660A1 (en) | Pressure pin of a press and press with pressure pin | |
| EP0837765B1 (en) | Process for determining the forces arising in an injection moulding machine and a device for carrying out the process | |
| DE2345445A1 (en) | Hydraulic multi-chamber load-providing cylinder - tests machines by means of stepped pistons and cylinder diameters | |
| DE202015107151U1 (en) | An online calibration and adjustment device for safety valve | |
| CH625273A5 (en) | ||
| DE1627878A1 (en) | Device to compensate for the spring deflection on machines, in particular on forging presses or the like. | |
| DE2040742A1 (en) | Drop forging press - ith exact guidance during pressing | |
| EP0618434B1 (en) | Method for measuring the radial forces of a sealing ring | |
| DE1030686B (en) | Pneumatic-hydraulic pressure generator | |
| DE4412367A1 (en) | Closing height adjustment device for a press | |
| DE1751959C3 (en) | Pressure transmission device | |
| DE2306652C3 (en) | Hydraulically driven resonance testing machine | |
| DE1292108B (en) | Drop forging or stamping press | |
| DE2026323A1 (en) | Liquid spring with high resilience | |
| DE4406767A1 (en) | Test body for load testing of press for determining its actual condition | |
| DE2141382B2 (en) | Tablet press with a pressing force monitoring device | |
| DD262279A1 (en) | weighing apparatus | |
| DE102021118550A1 (en) | Device for machining a workpiece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHJ | Non-payment of the annual fee |