DE3379795D1 - Method of controlling impact force and shock interval in drop hammers - Google Patents

Method of controlling impact force and shock interval in drop hammers

Info

Publication number
DE3379795D1
DE3379795D1 DE8383850049T DE3379795T DE3379795D1 DE 3379795 D1 DE3379795 D1 DE 3379795D1 DE 8383850049 T DE8383850049 T DE 8383850049T DE 3379795 T DE3379795 T DE 3379795T DE 3379795 D1 DE3379795 D1 DE 3379795D1
Authority
DE
Germany
Prior art keywords
core
casings
impact force
drop hammers
shock interval
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
Application number
DE8383850049T
Other languages
German (de)
Inventor
Kjell Landaeus
Bertil Borg
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.)
UDDCOMB EQUIPMENT AB, KALLINGE, SE
Original Assignee
Uddcomb Sweden Ab
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 Uddcomb Sweden Ab filed Critical Uddcomb Sweden Ab
Application granted granted Critical
Publication of DE3379795D1 publication Critical patent/DE3379795D1/en
Expired legal-status Critical Current

Links

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
    • E02D7/08—Drop drivers with free-falling hammer

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Casting Devices For Molds (AREA)
  • Pinball Game Machines (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

A drop hammer has a core (10) and a number of casings (12, 14, 16, 19) arranged concentrically around the core (10). Between the core (10) and the casings (12, 14, 16, 19) spacings are arranged, and the core (10) and the casings (12, 14, 16, 19) are interconnected alternatingly at one end and the other beginning at the upper end (13) of the core (10). Between the lower end of the core (10) and those ends of one or more casings (12, 14, 16, 19) which are not permanently connected, a shock wave transferring connection is provided to short-circuit the path of the shock wave through the core (10) and the casings (12, 14, 16, 19).
DE8383850049T 1983-02-28 1983-02-28 Method of controlling impact force and shock interval in drop hammers Expired DE3379795D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83850049A EP0117382B1 (en) 1983-02-28 1983-02-28 Method of controlling impact force and shock interval in drop hammers

Publications (1)

Publication Number Publication Date
DE3379795D1 true DE3379795D1 (en) 1989-06-08

Family

ID=8191618

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383850049T Expired DE3379795D1 (en) 1983-02-28 1983-02-28 Method of controlling impact force and shock interval in drop hammers

Country Status (3)

Country Link
EP (1) EP0117382B1 (en)
AT (1) ATE42781T1 (en)
DE (1) DE3379795D1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1784396B1 (en) * 1968-08-03 1971-07-01 Cordes Hugo Dipl Ing Ram hammer with sound-absorbing jacket
DE2237133C3 (en) * 1972-07-28 1975-04-30 Cordes, Hugo, Dipl.-Ing., 2000 Hamburg Ram hammer with sound-absorbing jacket
DE2454488C3 (en) * 1974-11-16 1981-07-09 Koehring Gmbh, 2086 Ellerau Smokable pile driver

Also Published As

Publication number Publication date
EP0117382A1 (en) 1984-09-05
ATE42781T1 (en) 1989-05-15
EP0117382B1 (en) 1989-05-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: UDDCOMB EQUIPMENT AB, KALLINGE, SE

8339 Ceased/non-payment of the annual fee