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EP0039474A1 - Appareil à vibrer en profondeur - Google Patents

Appareil à vibrer en profondeur Download PDF

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Publication number
EP0039474A1
EP0039474A1 EP81103212A EP81103212A EP0039474A1 EP 0039474 A1 EP0039474 A1 EP 0039474A1 EP 81103212 A EP81103212 A EP 81103212A EP 81103212 A EP81103212 A EP 81103212A EP 0039474 A1 EP0039474 A1 EP 0039474A1
Authority
EP
European Patent Office
Prior art keywords
load
pump
sensing
actuator
pressure
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.)
Granted
Application number
EP81103212A
Other languages
German (de)
English (en)
Other versions
EP0039474B1 (fr
Inventor
Franz Eichkorn
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.)
Fritz Pollems Spezialtiefbau KG
Original Assignee
FRITZ POLLEMS SPETIALTIEFBAU KG
Fritz Pollems Spezialtiefbau KG
POLLEMS FRITZ KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6101442&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0039474(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by FRITZ POLLEMS SPETIALTIEFBAU KG, Fritz Pollems Spezialtiefbau KG, POLLEMS FRITZ KG filed Critical FRITZ POLLEMS SPETIALTIEFBAU KG
Priority to AT81103212T priority Critical patent/ATE4233T1/de
Publication of EP0039474A1 publication Critical patent/EP0039474A1/fr
Application granted granted Critical
Publication of EP0039474B1 publication Critical patent/EP0039474B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/24—Prefabricated piles
    • E02D5/32—Prefabricated piles with arrangements for setting or assisting in setting in position by fluid jets
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
    • E02D3/054—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil involving penetration of the soil, e.g. vibroflotation
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/26—Placing by using several means simultaneously

Definitions

  • This invention relates to hydraulic systems and particularly such systems utilizing hydraulic actuators connected in parallel to move a single load.
  • an objective of the present invention is to provide a system wherein the pressures are equalized when two actuators are supplied from a pump. It is a further objective to provide such a system for use in a system shown in German 0ffenlegungsschrift 30 11 088 having a common assignee with the present application, wherein pilot operated meter-in valves are used .to control flow to the cylinders. In such a system, the characteristics of the meter-in are not matched perfectly. Further, if the meter-in valves are pressure compensated, there is a tendency for one cylinder to carry all of the load, and the other to have a high differential pressure drop across the meter-in valve.
  • the load on each actuator cylinder is sensed and the average is applied to the load responsive means for varying the displacement of a variable displacement pump.
  • Fig. 1 is a schematic drawing of a hydraulic circuit embodying the invention, only one fluid inlet for each actuator being shown, however, two passages, one for each end, being feaseable. Furthermore, the control passages for the meter-in valves have been omitted.
  • the hydraulic system embodying the invention comprises a pair of hydraulic actuators 10 in the form of cylinders having their piston rods 11 connected in parallel to a single load L . Fluid is supplied to one end of cylinders 10 by a pump 12 through lines 13. A pilot operated meter-in valve 14 in each line 13 controls the flow to its respective cylinder 10. A load drop check valve 15 is interposed in each line 13.
  • This circuit is similar to that disclosed in the aforementioned patent application, the disclosure of which is incorporated herein by reference.
  • the pump 12 is of the variable displacement type including load responsive means 16 for varying the displacement of the pump.
  • the mode of control is referred to as load sensing, and functions so that the pump provides sufficient flow to maintain the pressure in line 13 higher than the pressure in line 18 by a slight amount referred to as load sensing compensator differential pressure.
  • a load sensing line 17 senses the pressure between each meter-in valve 14 and the associated load drop check valve 15.
  • the lines 17 are connected to a load control line 18 extending through shuttle 21 to the load responsive means 16 on the pump l2.
  • load sensing shuttles 19 are provided between the sensing lines so that the highest pressure is controlling.
  • An orifice 20 is provided in each line 17, the orifices being equal in size.
  • the above described system tends to equalize the lifting pressures in each of two mechanically parallel connected cylinders.
  • the orifices 20 function essentially to create a load sensing control pressure which is the average of the pressures between the two cylinders.
  • the pump will be incapable of developing sufficient pressure to lift a load with only one cylinder pressurized.
  • the pressure commanded of the pump is limited to twice the pump load sensing compensator differential pressure. If the pressure required to lift the load is more than twice the load sensing differential, the load will not be raised until the second meter-in element opens. When a load is being raised, the pump will onstroke only as long as the cylinder pressures match each other within twice the load sensing compensator differential pressure.
  • the load sensing flow will pass from the high pressure cylinder to the low pressure cylinder. Since the orifices are equal, the pressure drop across each will be equal, and the load sensing signal will be limited to the sum of pressure in the low pressure cylinder and one-half the difference between the cylinder pressures. The flow passing through the orifices will be fed to the low pressure cylinder through the load drop check. Sizing of the orifices is not critical, except that they must be equal.
  • the pump output pressure will be a given amount above the load sensing feedback pressure, the pump pressure will not exceed the higher cylinder pressure when one cylinder is twice the normal load sensing differential pressure above the lower cylinder pressure.
  • the additional acutator When considering a case where pump output pressure is determined by a load sensing signal L S2 from another function such as an additional actuator, not shown, the additional acutator is connected to the system through a load sensing shuttle 21.
  • L S2 When L S2 is higher than L S1, the pump output pressure may be considerably higher than that required to raise a load. If one meter-in opens in advance of another because of a mismatch, there will be flow from the high pressure side through line 17.
  • Line 17 can be sized so as to accommodate sufficient flow so that the pressure difference between the two cylinders will be within an acceptable value. The addition of line 17 does not sacrifice the load holding capability of the valve in case of line rupture, because line 17 is isolated by the load drop check valves 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Soil Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Glass Compositions (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Special Spraying Apparatus (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Soil Working Implements (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Surgical Instruments (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
EP81103212A 1980-05-02 1981-04-29 Appareil à vibrer en profondeur Expired EP0039474B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81103212T ATE4233T1 (de) 1980-05-02 1981-04-29 Tiefenruettler.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3016841 1980-05-02
DE3016841A DE3016841C2 (de) 1980-05-02 1980-05-02 Tiefenrüttler

Publications (2)

Publication Number Publication Date
EP0039474A1 true EP0039474A1 (fr) 1981-11-11
EP0039474B1 EP0039474B1 (fr) 1983-07-20

Family

ID=6101442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103212A Expired EP0039474B1 (fr) 1980-05-02 1981-04-29 Appareil à vibrer en profondeur

Country Status (6)

Country Link
US (1) US4415046A (fr)
EP (1) EP0039474B1 (fr)
AT (1) ATE4233T1 (fr)
AU (1) AU6990981A (fr)
DE (2) DE3016841C2 (fr)
ZA (1) ZA812475B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19628769A1 (de) * 1996-07-17 1996-12-12 Bul Sachsen Gmbh Einrichtung und Verfahren zur Tiefenverdichtung von bindigem und nichtbindigem Verdichtungsgut (z. B. Lockergestein) und/oder zur Bestimmung des Verdichtungszustandes des Verdichtungsgutes und seines räumlichen und zeitlichen Verhaltens

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228542C1 (de) * 1992-08-27 1994-05-11 Keller Grundbau Gmbh Verfahren und Vorrichtung zum Verdichten von Deponien mittels des Tiefenrüttelns
DE4234112C1 (de) * 1992-10-09 1993-10-14 Keller Grundbau Gmbh Verfahren zur Gewinnung von Deponieraum durch Müllstopfverdichtung
DE4303518C2 (de) * 1993-02-06 1995-02-16 Leffer Stahl & App Verfahren und Vorrichtung zum Verfestigen einer Deponie von vorverdichtetem Altmüll unter Erschließung von zusätzlicher Aufnahmekapazität für Frischmüll
DE19845132A1 (de) * 1998-10-01 2000-04-06 Hossein Hosseini Tudeshki Verfahren und Anlage für die Verdichtung von bindigem und nichtbindigem Gut (z. B. Lockergestein) durch Drehspiralverdichtung bzw. Drehspiralstopfverdichtung
DE10190511D2 (de) 2000-02-19 2003-02-20 Hossein Hosseini Tudeshki Verfahren und Vorrichtung für die Verdichtung von bindigem und nichtbindigem Gut durch pulsende Verdrängung
FR2835857B1 (fr) * 2002-02-08 2004-09-17 Carmine Trani Procede et dispositif pour le compactage des sols
CN102733389B (zh) * 2012-06-21 2014-10-15 上海中技桩业股份有限公司 一种高压射流振动沉桩装置及沉桩工艺
CN113833405A (zh) * 2021-10-28 2021-12-24 中煤地第二勘探局集团有限责任公司 一种声频环保钻机液压系统及其控制方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL18467C (fr) * 1900-01-01
FR455730A (fr) * 1913-03-20 1913-08-07 Elmer Forrest Estes Dispositif pour le foncage des pieux ou pilots
US1574439A (en) * 1922-04-05 1926-02-23 Pringle Wayne Pile construction
US1905643A (en) * 1931-10-14 1933-04-25 Al Johnson Construction Co Apparatus for sinking bodies such as caissons and piles
DE685123C (de) * 1936-07-17 1939-12-12 Johann Keller Fa Verfahren zum Verdichten von gewachsenem Baugrund oder von Schuettungen grosser Maechtigkeit unter Ruetteln
US2354936A (en) * 1941-12-15 1944-08-01 Emma C Bignell Apparatus for sinking piles
GB753132A (en) * 1952-06-25 1956-07-18 Sergey Steuerman Vibrator devices

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1277369A (fr) * 1960-10-17 1961-12-01 S T V Vibratechniques Appareil pour la réalisation de forages dans de mauvais sols et le bourrage desditsforages à l'aide de sable, béton ou matériaux analogues
US3312295A (en) * 1965-09-23 1967-04-04 Jr Albert G Bodine Method and apparatus for fluid injection in vibratory driving of piles and the like
CH510793A (fr) * 1967-12-29 1971-07-31 Zaklady Remontu Masz Budowlany Vibro-fonceur, notamment pour la formation de pieux dans le sol
CA933146A (en) * 1970-06-19 1973-09-04 Becker Drills Ltd. Method of drilling and casing a large diameter borehole
DE2133561B2 (de) * 1971-07-06 1973-05-17 Bauer, Karlheinz, Dr Ing , 8898 Schrobenhausen Tiefenruettler zum verdichten des erdreiches und zum herstellen von bohrloechern im erdreich
US3916634A (en) * 1973-03-12 1975-11-04 Roy J Woodruff Method for forming holes in earth and setting subterranean structures therein
US4249836A (en) * 1976-08-02 1981-02-10 Slurry Systems, Inc. Method and apparatus for building below ground slurry walls
JPS54155607A (en) * 1978-04-06 1979-12-07 Hisaharu Nakashima Method of pile driving construction to base rock
US4319784A (en) * 1980-06-04 1982-03-16 Conzinc Riotinto Malaysia Sendirian Berhard Apparatus for water jet and impact drilling and mining

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL18467C (fr) * 1900-01-01
FR455730A (fr) * 1913-03-20 1913-08-07 Elmer Forrest Estes Dispositif pour le foncage des pieux ou pilots
US1574439A (en) * 1922-04-05 1926-02-23 Pringle Wayne Pile construction
US1905643A (en) * 1931-10-14 1933-04-25 Al Johnson Construction Co Apparatus for sinking bodies such as caissons and piles
DE685123C (de) * 1936-07-17 1939-12-12 Johann Keller Fa Verfahren zum Verdichten von gewachsenem Baugrund oder von Schuettungen grosser Maechtigkeit unter Ruetteln
US2354936A (en) * 1941-12-15 1944-08-01 Emma C Bignell Apparatus for sinking piles
GB753132A (en) * 1952-06-25 1956-07-18 Sergey Steuerman Vibrator devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19628769A1 (de) * 1996-07-17 1996-12-12 Bul Sachsen Gmbh Einrichtung und Verfahren zur Tiefenverdichtung von bindigem und nichtbindigem Verdichtungsgut (z. B. Lockergestein) und/oder zur Bestimmung des Verdichtungszustandes des Verdichtungsgutes und seines räumlichen und zeitlichen Verhaltens
DE19628769C2 (de) * 1996-07-17 1998-06-10 Bul Sachsen Gmbh Verfahren und Einrichtung zur Tiefenverdichtung von bindigem und nichtbindigem Verdichtungsgut

Also Published As

Publication number Publication date
DE3160640D1 (en) 1983-08-25
AU6990981A (en) 1981-11-05
ATE4233T1 (de) 1983-08-15
DE3016841A1 (de) 1981-11-26
ZA812475B (en) 1982-04-28
EP0039474B1 (fr) 1983-07-20
US4415046A (en) 1983-11-15
DE3016841C2 (de) 1984-11-29

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