US2128584A - Power ram - Google Patents

Power ram Download PDF

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Publication number
US2128584A
US2128584A US51697A US5169735A US2128584A US 2128584 A US2128584 A US 2128584A US 51697 A US51697 A US 51697A US 5169735 A US5169735 A US 5169735A US 2128584 A US2128584 A US 2128584A
Authority
US
United States
Prior art keywords
cylinder
pile
ram
piston
piston rod
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.)
Expired - Lifetime
Application number
US51697A
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English (en)
Inventor
Haage Konrad
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.)
Delmag Deutsche Elektromaschinen- & Motoren-Bau-Aktiengesellschaft
Delmag Deutsche Elmasch & Moto
Original Assignee
Delmag Deutsche Elmasch & Moto
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 Delmag Deutsche Elmasch & Moto filed Critical Delmag Deutsche Elmasch & Moto
Application granted granted Critical
Publication of US2128584A publication Critical patent/US2128584A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
    • E02D13/10—Follow-blocks of pile-drivers or like devices
    • 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
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/12—Drivers with explosion chambers
    • E02D7/125—Diesel drivers

Definitions

  • My invention relates to power rams for piledriving and other work, more especially of the kind, in which the ram proper is constituted by the cylinder of an internal combustion engine,
  • the ram or pile driver is as a rule constituted by the piston of the engine, this piston being comparatively light in weight, while the cylinder or casing, in which the piston moves, is very heavy. This distribution of weights has been adopted for the reason that otherwise the cylinder or casing would be lifted off the pile to be driven under the pressure of the combustion gases forcing the piston downward.
  • the advantage of a heavy-weight ram is combined with the advantage of a great number of blows, the stroke of the ram proper being reduced by an energy storing device, which is connected with a heavy part of the ram which follows the downward movement of the pile to 30 be driven, being, however, prevented by an additional load from rising.
  • Fig. 1 is an axial section of the first modification, while Fig. 2 is a part elevation showing a different mode of fixing the pile extension to the pile to be driven.
  • Fig. 3 is an elevation partly in axial section of a third modification.
  • I is the runner
  • 2 is the cylinder of the internal combustion engine
  • 3 is the pile extension
  • 4 is the pile to be driven.
  • a piston rod 5 carrying at its extreme upper end the piston l5, on which the cylinder 2 is free to reciprocate in vertical direction.
  • I 5 is a fuel injection pump secured to the pile extension 3, the piston rod I!
  • the upward stroke of the ram cylinder 2 is limited and energy stored by means of a body of air enclosed in the closed bottom part 2
  • I may for instance fix the pile extension 3 to the pile 4, and in that case the highest degree of compression in the space 2
  • One manner of fixing the pile extension to the pile is illustrated in Fig. 2 in which grippers 9 formed with jaws l0 are pivoted to the pile extension 3 at 6, screw bolts H and nuts l2 allowing these grippers 9 to be pressed against the pile head so as to fix to it the pile extension.
  • this mode of fixation I may also insert between the pile extension 8 and the runner I an automatic jam, which prevents the pile extension from being lifted by the compressed air in the chamber 2
  • Fig. 1 where I is a wedge in gliding contact with the runner, while 8 is a row of rollers inserted between the inclined face of the wedge and another inclined face 28-of the pile extension. Obviously, whenever the force tending to lift the pile extension 3 exceeds the weight of this member, this latter will be prevented from rising by the rollers 8 inserted between the wedge l and the cam face 28. On the other hand the rollers 8 will not prevent the pile extension from following the downward movement of the pile 4.
  • the energy storing device is represented by a pair of coil springs 29, the ends of which are fixed to the pile extension 3 and to the ram cylinder 2, respectively, and which on the ram cylinder being lifted by the combustion gases are placed under tension, thus storing energy which is utilized, during the descent of the cylinder, for accelerating same.
  • a pile-driving power ram in combination, a ramming cylinder closed at both ends and a piston in said cylinder, both forming part of an internal combustion engine, a piston rod fixed to said piston and extending through the bottom of said cylinder, which gas-tightly embraces said rod, into contact with the pile to be driven, means for holding said piston rod down on the pile, means for injecting an explosive mixture into said cylinder above said piston and an elastic bufier combined with, and adapted to damp the lifting effect exerted on, said cylinder by the explosion of said mixture and to thereby accelerate the drop of said cylinder.
  • a ramming cylinder closed at both ends and a piston in said cylinder, both forming part of an internal combustion engine, a piston rod fixed to said piston and extending through the bottom of said cylinder, which gas-tightly embraces'said rod, into contact with the pile to be driven, means for holding said piston rod down on the pile, means for injecting an explosive mixture into said cylinder above saidpisto and an enclosed body of gas, enclosed between the bottom of said cylinder and below said piston, so as to be compressed by the rising cylinder and to counteract the lifting effect exerted on said cylinder by the explosion of said mixture and to thereby accelerate the drop of said cylinder.
  • a pile-driving power ram in combination, a ramming cylinder closed at both ends and a piston in said cylinder, both forming part of an internal combustion engine, a piston rod fixed to said piston and extending through the bottom of said cylinder, which gas-tightly embraces said rod, into contact with the pile to be driven, means for holding said piston rod down on the pile, means for injecting an explosive mixture into said cylinder above said piston and a spring yieldingly coupling said cylinder with the projecting part of said piston rod.
  • a pile-driving power ram in combination, a runner, a ramming cylinder, closed at both ends, guided by said runner and a piston in said cylinder, both forming part of an internal combustion engine, a piston rod fixed to said piston and extending through the bottom of said cylinder, which gas-tightly embraces said rod, into contact with the pile to be driven, means for holding said piston rod down on the pile, means for injecting an explosive mixture into said cylinder above said piston, and an elastic buffer combined with and adapted to damp the lifting effect exerted on said cylinder by the explosion of said mixture and to thereby accelerate the drop of said cylinder, and clamping means, operative in upward direction only, for clamping the projecting part of said piston rod to said runner.
  • a pile-driving power ram in combination, a runner, a ramming cylinder, closed at both ends, guided by said runner and a piston in said cylinder, both forming part of an internal combustion engine, a piston rod fixed to said piston and extending through the bottom of said cylinder, which gas-tightly embraces said rod, into contact with the pile to be driven, means for holding said piston rod down on the pile, means for injecting an explosive mixture into said cylinder above said piston, and an elastic bufler combined with and adapted to damp the lifting eflect exerted on said cylinder by the explosion of said mixture and to thereby accelerate the drop of said cylinder, and a wedging jam, operative in upward direction only, inserted between said runner and the projecting part of said piston rod.

Landscapes

  • Engineering & Computer Science (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)
  • Structural Engineering (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US51697A 1934-12-06 1935-11-26 Power ram Expired - Lifetime US2128584A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE466807X 1934-12-06

Publications (1)

Publication Number Publication Date
US2128584A true US2128584A (en) 1938-08-30

Family

ID=6540599

Family Applications (1)

Application Number Title Priority Date Filing Date
US51697A Expired - Lifetime US2128584A (en) 1934-12-06 1935-11-26 Power ram

Country Status (6)

Country Link
US (1) US2128584A (de)
AT (1) AT150337B (de)
CH (1) CH186483A (de)
DK (1) DK53105C (de)
FR (1) FR797901A (de)
GB (1) GB466807A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2647373A (en) * 1950-04-20 1953-08-04 Bell Noel Gonne Pile driving hammer
US2758575A (en) * 1949-12-05 1956-08-14 Wampach Aloyse Nicolas Ramming machines and derricks for the same
US2869523A (en) * 1954-02-03 1959-01-20 Pastushin Aviat Corp Ejector release mechanism for auxiliary fuel tanks, and the like
US2882690A (en) * 1955-03-11 1959-04-21 Mckiernan Terry Corp Pile hammer operable with either diesel or drop hammer effect
US3009522A (en) * 1957-03-27 1961-11-21 Julius W Bedner Pile-driver with a hydraulically operated pile rammer
US3027883A (en) * 1957-02-08 1962-04-03 Delmag Maschinenfabrik Diesel hammer for pile drivers
US4064964A (en) * 1976-07-12 1977-12-27 Norden John A E Seismic signal generating apparatus

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1195680B (de) * 1961-06-30 1965-06-24 Hugo Cordes Dipl Ing Hydraulische Klemmvorrichtung fuer hydraulischen Rammhammer
SE409217B (sv) * 1976-02-25 1979-08-06 Ludvigson Birger Apparat for overforande av stotkraft till ett langstreckt foremal, t ex en pale
FR2475599A1 (fr) * 1980-02-13 1981-08-14 Gaspar Coelus Procede et dispositif de battage et d'extraction d'elements tels que des pieux
DE69434915T2 (de) * 1993-07-10 2007-10-31 Baca Ltd., Nr Howden Elastisches Seil

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758575A (en) * 1949-12-05 1956-08-14 Wampach Aloyse Nicolas Ramming machines and derricks for the same
US2647373A (en) * 1950-04-20 1953-08-04 Bell Noel Gonne Pile driving hammer
US2869523A (en) * 1954-02-03 1959-01-20 Pastushin Aviat Corp Ejector release mechanism for auxiliary fuel tanks, and the like
US2882690A (en) * 1955-03-11 1959-04-21 Mckiernan Terry Corp Pile hammer operable with either diesel or drop hammer effect
US3027883A (en) * 1957-02-08 1962-04-03 Delmag Maschinenfabrik Diesel hammer for pile drivers
US3009522A (en) * 1957-03-27 1961-11-21 Julius W Bedner Pile-driver with a hydraulically operated pile rammer
US4064964A (en) * 1976-07-12 1977-12-27 Norden John A E Seismic signal generating apparatus

Also Published As

Publication number Publication date
AT150337B (de) 1937-08-10
GB466807A (en) 1937-06-07
FR797901A (fr) 1936-05-06
DK53105C (da) 1937-05-18
CH186483A (de) 1936-09-30

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