JPS56135629A - Oil-pressure type drop hammer - Google Patents

Oil-pressure type drop hammer

Info

Publication number
JPS56135629A
JPS56135629A JP3738980A JP3738980A JPS56135629A JP S56135629 A JPS56135629 A JP S56135629A JP 3738980 A JP3738980 A JP 3738980A JP 3738980 A JP3738980 A JP 3738980A JP S56135629 A JPS56135629 A JP S56135629A
Authority
JP
Japan
Prior art keywords
spool
spring
piston
housing hole
coiled spring
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
JP3738980A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6138286B2 (enrdf_load_stackoverflow
Inventor
Sakae Fukai
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP3738980A priority Critical patent/JPS56135629A/ja
Priority to GB8108157A priority patent/GB2076718B/en
Publication of JPS56135629A publication Critical patent/JPS56135629A/ja
Publication of JPS6138286B2 publication Critical patent/JPS6138286B2/ja
Granted 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
    • E02D7/10—Power-driven drivers with pressure-actuated hammer, i.e. the pressure fluid acting directly on the hammer structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
    • B21J7/20—Drives for hammers; Transmission means therefor
    • B21J7/36—Drives for hammers; Transmission means therefor for drop hammers
    • B21J7/40—Drives for hammers; Transmission means therefor for drop hammers driven by hydraulic or liquid pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical 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)
  • Structural Engineering (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Forging (AREA)
  • Percussive Tools And Related Accessories (AREA)
JP3738980A 1980-03-26 1980-03-26 Oil-pressure type drop hammer Granted JPS56135629A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3738980A JPS56135629A (en) 1980-03-26 1980-03-26 Oil-pressure type drop hammer
GB8108157A GB2076718B (en) 1980-03-26 1981-03-16 Hydraulic drop hammer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3738980A JPS56135629A (en) 1980-03-26 1980-03-26 Oil-pressure type drop hammer

Publications (2)

Publication Number Publication Date
JPS56135629A true JPS56135629A (en) 1981-10-23
JPS6138286B2 JPS6138286B2 (enrdf_load_stackoverflow) 1986-08-28

Family

ID=12496166

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3738980A Granted JPS56135629A (en) 1980-03-26 1980-03-26 Oil-pressure type drop hammer

Country Status (2)

Country Link
JP (1) JPS56135629A (enrdf_load_stackoverflow)
GB (1) GB2076718B (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0388497B1 (de) * 1989-03-23 1993-02-17 Menck Gmbh Verfahren zum Betrieb von hydraulischen Freifall-Ramm-hämmern und Steuervorrichtung dazu
DE102004023587A1 (de) * 2004-05-13 2005-12-08 Menck Gmbh Schlagmedium
USD663632S1 (en) 2010-08-30 2012-07-17 Kimberly-Clark Worldwide, Inc. Wet wipe dispenser
DE102015105172B4 (de) 2015-04-02 2023-05-04 Langenstein & Schemann Gmbh Schmiedehammer
GB2551774B (en) * 2016-06-30 2019-02-20 Dawson Const Plant Ltd Pile Hammer
CN108126998A (zh) * 2017-12-31 2018-06-08 戚天儿 一种新型冶金塑形用机械臂装置
CN119657806B (zh) * 2025-02-20 2025-05-16 山西宝恒佳特种材料制造有限公司 一种高效圆钢锻造模具

Also Published As

Publication number Publication date
GB2076718A (en) 1981-12-09
GB2076718B (en) 1983-03-16
JPS6138286B2 (enrdf_load_stackoverflow) 1986-08-28

Similar Documents

Publication Publication Date Title
JPS57173632A (en) Hydraulic buffer
JPS6449730A (en) Semi-active type damper used for vehicle, etc.
JPS56135629A (en) Oil-pressure type drop hammer
CA2203241A1 (en) Subsurface safety valve of minimized length
ES2025741T3 (es) Amortiguador hidraulico dotado de medios que permiten variar sus caracteristicas de funcionamiento.
DE69919486D1 (de) Luftdämpfer
DE2721890A1 (de) Hydraulische stossbremse fuer rohrleitungssysteme
CA2364329A1 (en) Equalizing flapper for downhole safety valves
SE9101252L (sv) Gasfjaeder som efter hoptryckning har en foerdroejd aatergaang till ursprunglig laengd
ATE91328T1 (de) Gasanschlussarmatur.
JPS5718567A (en) Vibro-isolating device of spool valve in control valve for power steering mechanism
CA2055331C (en) Accumulator with a valve connected float
KR870000391B1 (en) Method for manufacturing valve guide for a hydraulic damper
AU5307490A (en) A positioning device
JPS57149651A (en) Elongation absorber for wire rope
SE8500229D0 (sv) Proportionell luftventil samt forfarande for astadkommande av ett proportionellt luftflode
DE59909373D1 (de) Rolladen
JPS5790442A (en) Hydraulic shock absorber
EP0077457A3 (en) Rotary cylinder
JPS592368Y2 (ja) 油浸形鉄心を備えた電磁弁
ES8301344A1 (es) Dispositivo de valvula de cierre rapido perfeccionado utilizable particularmente en calderas de vapor y otras instalaciones que trabajan con medios circulantes.
JPS56138535A (en) Hydraulic shock absorber
JPS5686275A (en) Temperature controlling valve
JPS57184208A (en) Electromagnet device
JPS57171134A (en) Hydraulic buffer