EP0353400B1 - Rammbohrgerät - Google Patents

Rammbohrgerät Download PDF

Info

Publication number
EP0353400B1
EP0353400B1 EP89107906A EP89107906A EP0353400B1 EP 0353400 B1 EP0353400 B1 EP 0353400B1 EP 89107906 A EP89107906 A EP 89107906A EP 89107906 A EP89107906 A EP 89107906A EP 0353400 B1 EP0353400 B1 EP 0353400B1
Authority
EP
European Patent Office
Prior art keywords
housing
collar
tip
chisel
boring machine
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
EP89107906A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0353400A3 (de
EP0353400A2 (de
Inventor
Alfons Dipl.-Ing. Hesse
Herbert Hupertz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0353400A2 publication Critical patent/EP0353400A2/de
Publication of EP0353400A3 publication Critical patent/EP0353400A3/de
Application granted granted Critical
Publication of EP0353400B1 publication Critical patent/EP0353400B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers
    • E21B4/145—Fluid operated hammers of the self propelled-type, e.g. with a reverse mode to retract the device from the hole
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17042—Lost motion

Definitions

  • the invention relates to a ram boring machine with an impact piston which is displaceable in a tubular housing, a displaceably mounted chisel which is guided through a housing tip and which is guided with a collar in a housing bore which has a front and a rear stop which limits the stroke of the chisel, and with an in the working space of the percussion piston protruding is provided.
  • a ram boring machine with a two-part housing ie with a housing tip screwed into the housing receiving the percussion piston
  • the housing tip there encloses a chisel which is designed as a striking tip at its front end in the working or impact direction and has a collar and a pin at the other end, the collar being received by a bore in the front housing.
  • the pin represents the impact surface for the associated percussion piston and, in the starting position, protrudes from a ring screwed into the housing with the housing tip before the working stroke.
  • the ring limits the movement of the collar and thus the chisel against the working direction of the striking tip.
  • ram boring machines are also known in which the housing and the housing tip are in one piece; otherwise there are no significant differences between a two-part and a one-piece device housing.
  • the invention has for its object to design a generic ram boring machine so that in particular the disadvantages mentioned when used in soft soils can be avoided.
  • an inner collar integral with the housing forms the rear stop.
  • the inner collar and the end face of the housing tip screwed into the housing can preferably delimit the housing bore, wherein a compression spring acting on the collar can advantageously be arranged in a recess in the housing tip.
  • the housing bore receiving the chisel collar and, at the same time, the rear stop surface of the inner collar can, for example, be produced in a simple manner by turning out the end face of the housing, e.g. the hole can be turned from the full material.
  • the length of the threaded section of the housing tip screwed into the front housing bore is dimensioned such that the distance from the end face of the screwed housing tip to the collar pressed by the compression spring against the rear stop of the inner collar is greater than the protruding length of the pin, without further effort the difference according to the invention between the projection length and the stroke of the chisel collar.
  • the impact energy of the percussion piston is thus transmitted either via the end face of the housing tip or via the inner collar fixed to the housing.
  • a percussion piston 3 which is only shown with its front end, is guided to move back and forth.
  • the percussion piston 3 receives its impact energy by supplying compressed air to the housing 2. Since these are known measures and constructions, the rear part of the housing 2 has been omitted in this respect.
  • the main housing 2 is provided at its front end in the direction of impact 4 with an internal thread 5, into which a housing tip 6 is screwed with a pin-like thread extension 7.
  • a chisel 10 formed at its front end as a striking tip 9 is guided.
  • the striking tip 9 is provided with a step head 11 which is fastened to the chisel 10 by means of pins 12.
  • the pins 12 penetrate a housing bore 13 of the housing tip 6.
  • a collar 14 of the chisel 10 is also arranged in the housing bore 13; the collar 14 touches in the starting position shown the rear stop 15 defined by the housing bore 13.
  • a pin 16 of the chisel 10 extends through the thread extension 7 of the housing tip 6 and projects into the working space 17 of the percussion piston 3.
  • the protruding length 18 of the pin 16 is smaller than the maximum stroke 19 of the chisel 10 in the direction of impact 4; the stroke path 19 results from the path that the chisel collar 14 could theoretically cover from the rear stop position shown up to the pins 12 which simultaneously define the front stop 20.
  • the percussion piston 3 hits the end face 21 of the housing tip 6 after a stroke of the chisel 10 corresponding to the protruding length 18, the chisel 10 then no longer moving forward and the collar 14 the pins 12 or cannot reach the front stop 20.
  • the housing bore 24 has a front end Section with an internal thread 25 into which a housing tip 106 is screwed with a pin-like thread extension 107.
  • the chisel 110 has a collar 114 and a pin 116 penetrating the through bore 22 of the inner collar 23 and projecting into the working space 117 of the striking piston 103.
  • a compression spring 27 holds the collar 114 in abutment against a rear stop 115 defined by the inner collar 23; the compression spring 27 is in a cylindrical recess 28 of the extension screwed into the housing 102 107 of the housing tip 106 is arranged.
  • the protrusion length 118 ie the extent to which the pin 116 protrudes from the inner collar 23 into the working space 117 of the percussion piston 103, is smaller than the maximum stroke distance 119 of the chisel 110. Due to the difference between the protrusion length 118 and the stroke path 119, the percussion piston 103, which moves chisel 110 forward in impact direction 104, after a stroke of chisel 110 corresponding to protruding length 118 on inner collar 23, which then offers a flush end face with the end face of pin 116. The impact energy of the impact piston 103 is introduced into the housing 102 via the inner collar 23.
  • the collar 114 has approached the front stop 120 defined by the housing tip 106 in accordance with the dimension of the protruding length 118 of the pin 116; However, the collar 114 cannot reach the front stop 120.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
EP89107906A 1988-07-29 1989-05-02 Rammbohrgerät Expired - Lifetime EP0353400B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3825800 1988-07-29
DE3825800A DE3825800A1 (de) 1988-07-29 1988-07-29 Rammbohrgeraet

Publications (3)

Publication Number Publication Date
EP0353400A2 EP0353400A2 (de) 1990-02-07
EP0353400A3 EP0353400A3 (de) 1991-02-06
EP0353400B1 true EP0353400B1 (de) 1994-03-16

Family

ID=6359839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89107906A Expired - Lifetime EP0353400B1 (de) 1988-07-29 1989-05-02 Rammbohrgerät

Country Status (4)

Country Link
US (1) US5095998A (enrdf_load_stackoverflow)
EP (1) EP0353400B1 (enrdf_load_stackoverflow)
JP (1) JP2693234B2 (enrdf_load_stackoverflow)
DE (1) DE3825800A1 (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0838555A4 (en) * 1995-07-06 1999-09-29 Komatsu Mfg Co Ltd HYDRAULIC COMPRESSOR
CA2194079C (en) * 1996-12-19 2005-11-29 Murray P. Craigmile Methods and apparatus for directionally drilling a bore and placing pipe
US5896934A (en) * 1997-09-08 1999-04-27 Chicago Pneumatic Tool Company Reciprocating tool having a piston retainer
KR20010037319A (ko) * 1999-10-15 2001-05-07 양재신 브레이커용 툴홀더
KR20010037320A (ko) * 1999-10-15 2001-05-07 양재신 브레이커의 툴홀더 장치
US6273201B1 (en) * 2000-02-16 2001-08-14 Earth Tool Company, L.L.C. Pneumatic ground piercing tool with movable chisel head
US7066279B2 (en) * 2004-11-08 2006-06-27 Earth Tool Company, L.L.C. Pneumatic ground piercing tool
CA2665298C (en) * 2008-05-03 2016-03-01 Earth Tool Company, Llc Pneumatic impact tool
JP5858259B2 (ja) * 2014-07-24 2016-02-10 株式会社全晴 エアーハンマー工具、及びエアーハンマー工具の打撃力調整方法
US10641051B1 (en) * 2016-09-07 2020-05-05 Dandelion Energy, Inc. Systems and methods for coupling and decoupling drill heads for ground loop preparation for geothermal applications

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1481641A (en) * 1920-11-09 1924-01-22 Ingersoll Rand Co Tie-tamper front-end construction
US1525471A (en) * 1921-07-25 1925-02-10 Chicago Pneumatic Tool Co Coupling for percussive tools
US2181381A (en) * 1937-07-26 1939-11-28 John J Roberts Internally cushioned tool-and-chuck lock for power hammers
US2889811A (en) * 1956-08-10 1959-06-09 Electro Chimie Metal Percussion tools
US3625295A (en) * 1970-02-12 1971-12-07 Kent Air Tool Co Airhammer
DE2157259C3 (de) * 1971-11-18 1973-06-07 Tracto Technik Rammbohrgerät
FR2223143A1 (en) * 1973-03-30 1974-10-25 Favre Jacques Guide for tools or bits in pneumatic hammers - has conventional barrel extended as slide fit over flanged tool shaft
DE2537176B1 (de) * 1975-08-21 1976-12-09 Jenne & Strahm Ag Steuervorrichtung fuer den vor- und ruecklauf von selbstgetriebenen pneumatischen rammbohrgeraeten
DE3124524C2 (de) * 1981-06-23 1985-08-01 Gustav Dr.-Ing. 4300 Essen Jenne Rammvorrichtung für selbstgetriebene pneumatische Rammbohrgeräte
DE8310178U1 (de) * 1982-10-08 1983-10-06 Markovic, Vladimir, 61113 Ljublijana Pneumatisches, selbstgetriebenes rammbohrgeraet
SE444401B (sv) * 1983-01-24 1986-04-14 Atlas Copco Ab Energiabsorberande inspenningsenhet for slagverktyg
DE3710162C1 (de) * 1987-03-27 1988-09-29 Helmuth Dipl-Ing Roemer Rammbohrgeraet mit beweglichem Meissel

Also Published As

Publication number Publication date
EP0353400A3 (de) 1991-02-06
JPH0247492A (ja) 1990-02-16
JP2693234B2 (ja) 1997-12-24
EP0353400A2 (de) 1990-02-07
DE3825800A1 (de) 1990-02-01
US5095998A (en) 1992-03-17
DE3825800C2 (enrdf_load_stackoverflow) 1991-08-29

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