CS248577B1 - A device for modeling the effects of strikes on soil - Google Patents
A device for modeling the effects of strikes on soil Download PDFInfo
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- CS248577B1 CS248577B1 CS368885A CS368885A CS248577B1 CS 248577 B1 CS248577 B1 CS 248577B1 CS 368885 A CS368885 A CS 368885A CS 368885 A CS368885 A CS 368885A CS 248577 B1 CS248577 B1 CS 248577B1
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Abstract
Zariadenie na modelovanie účinkov úderov na zeminu, u ktorého sa statický tlak vytvára priamočiarym hydromotorom, ktorého pistnioa sa opiera o vzorku zeminy, pričom tlaková komora priamočiareho hydromotora je přepojená s hydraulickou komorou hydropneumatiokého akumulátore, na ktorého pneumatioků komoru sú sériovo připojené snímač tlaku, regulátor a akčaý člen, ktorého výstup je napojený na tlakovú komoru priamočiareho hydromotora. Riešenie má vyuzitie hlavně v oblasti mechaniky zemin, možno ho však uplatnil i pri zkušaní inýoh materiálov, ako sú napr. bitúmety a iné vazkopružné materiály.A device for modeling the effects of impacts on the soil, in which the static pressure is created by a linear hydraulic motor, the piston of which rests on the soil sample, the pressure chamber of the linear hydraulic motor being connected to the hydraulic chamber of a hydropneumatic accumulator, to the pneumatic chamber of which a pressure sensor, a regulator and an actuator are connected in series, the output of which is connected to the pressure chamber of the linear hydraulic motor. The solution is mainly used in the field of soil mechanics, but it can also be applied in testing other materials, such as bitumens and other viscoelastic materials.
Description
- 2 - 248 577 ods trv tom
ktorého piestnica sa opiera o vzor*
Vynález sa týká zariadenia na modelovanie účinkov úderovna zeminu, u ktorého sa rieái vytvéranie statického přítlakuna vzorku zeminy· U modelovacích zariadení tohto typu sa statický přítlakna vzorku.zeminy vytvára niekolkými spdsobmí. Najjednoduchéiepomocou vinutéj pružiny, zložitejšie pneumaticky alebo elektrohydraulicky. Spoločným znakom používaných zariadení je, žereakcia na změnu výšky vzorky následkom úderu je rýchla, δοodpovedá potřebám procesu modelovania. Nevýhodou použitia vi-nuté j pružiny je pokles sily predpfitia pri jej odpružovaní,pneumatický a hydraulický systém je zas dost komplikovaným anákladným rieáením.
Uvedené nevýhody saktorého podstata spočívápriamočiaijp* hydromotora ku zeminy, pričom tlaková komora priamočiarehc hydromotora jepřepojená s hydraulickou komorou hydropneumatického akumulá-tore. Na pneumatická komoru akumulátore sú sériovo připojenésnímač tlaku, regulátor a akčný člen; výstup akčného člena jenapojený na tlaková komoru priamočiareho hydromotora.
Hlavná výhoda tohto usporiadania spočívá v jednoduchostirieéenia a v malých nákladoch na jeho uskutočnenie·
Zariadenie podlá vynálezu je znázorněné na priloženomvýkrese. Padajúca hmota 1 pdsobí údermi na vzorku 2t pričomúdery sa přidávajú k nastavenému statickému přítlaku, ktorýsa nanáéa pieetnicou 2 priamočiareho hydromotora £· Na tlako-vá komoru priamočiareho hydromotora £ je napojený hydropneu-matický akumulátor 6, ktorý má pneumatická komoru 2 naplněná - 3 - 248 577 na plniaci tlak, odpovedajúci potřebnému statickému přítlaku·Stlačený vzduch v pneumatickej komoře J představuje pružiaciprvok, ktorý umožňuje rýchlu reakciu priamočiareho hydromotora£ při zmene výáky vzorky 2 po údere, fieakciou priamočiarehohydromotora 4 poklesne tlak v pneumatickej komoře 2> tentopokles sa meria snímačom tlaku 8. Signál zo snímače tlaku 8sa vedie do regulátora £, ktorý svojím výstupom ovládá akčnýčlen 10 napr. čerpadlo · Akčným členom 10 sa doplňuje hydrau-lická kvapalina do tlakovej komory % priamočiareho hydromoto-ra čím sa pósobí proti poklesu tlaku v pneumatickej komo-ře 2· Stabilitu plniaceho tlaku možno kontrolovat tiež vizu-álně tlakomerom 11.
Opísané zariadenie sa používá hlavně na modelovanie účin-kov úderov na zeminu. Uvedený příklad však neohraničuje jehopoužitie na skúáanie iných raateriálov, ako sú bitúmeny a inévázkopružné materiály.
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whose piston is based on a pattern *
BACKGROUND OF THE INVENTION The invention relates to a device for modeling the impact of a striking earth, in which static pressure is applied to a soil sample. The simplest with coil spring, more complicated pneumatically or electrohydraulically. The common feature of the equipment used is that the response to the change in sample height due to the impact is rapid, δο corresponds to the needs of the modeling process. The disadvantage of the use of winding spring is the decrease in the force of the pre-biased spring, the pneumatic and hydraulic systems are quite complicated and basic.
The above-mentioned disadvantages of such a principle lie in the hydraulic motor to the ground, the pressure chamber of the rectilinear hydraulic motor being connected to the hydraulic chamber of the hydropneumatic accumulator. A pressure transducer, regulator and actuator are connected to the accumulator pneumatic chamber as standard; the output of the actuator connected only to the pressure chamber of the rectilinear hydraulic motor.
The main advantage of this arrangement is the simplicity and low cost of implementation.
The device according to the invention is shown in the attached drawing. The falling mass 1 is subjected to strokes on the sample 2t while the droplets are added to the set static pressure applied by the nozzle 2 of the rectilinear hydraulic motor. The hydropneumatic accumulator 6 is connected to the pressure chamber of the rectilinear hydraulic motor 6 and has a pneumatic chamber 2 filled. 577 for the filling pressure corresponding to the required static pressure · The compressed air in the pneumatic chamber J represents a spring element which allows a rapid reaction of the rectilinear hydraulic motor při when the sample ejectors 2 change after a stroke, the pressure in the pneumatic chamber 2 decreases by directing the hydraulic motor 4 The signal from the pressure transducer 8 is fed to a regulator 6 which actuates the actuator 10, for example, a pump, by its output. · Stability at the filling pressure, it can also be visually inspected by the pressure gauge 11.
The device described is mainly used for modeling the impact effect on the soil. However, this example does not limit the use of other materials such as bitumen and other flexible materials.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS368885A CS248577B1 (en) | 1985-05-23 | 1985-05-23 | A device for modeling the effects of strikes on soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS368885A CS248577B1 (en) | 1985-05-23 | 1985-05-23 | A device for modeling the effects of strikes on soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS248577B1 true CS248577B1 (en) | 1987-02-12 |
Family
ID=5377670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS368885A CS248577B1 (en) | 1985-05-23 | 1985-05-23 | A device for modeling the effects of strikes on soil |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS248577B1 (en) |
-
1985
- 1985-05-23 CS CS368885A patent/CS248577B1/en unknown
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