EP0499580A2 - Outil d'extraction - Google Patents

Outil d'extraction Download PDF

Info

Publication number: EP0499580A2
Authority: EP; European Patent Office
Prior art keywords: thread; external thread; extraction tool; expansion sleeve; tool according
Prior art date: 1991-02-11
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

EP92810071A

Other languages

German (de)

English (en)

Other versions

EP0499580B1 (fr

EP0499580A3 (en

Inventor

Antonius Winkeljann

Franz Popp

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.)

Hilti AG

Original Assignee

Hilti AG

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.)

1991-02-11

Filing date

1992-01-31

Publication date

1992-08-19

1992-01-31 Application filed by Hilti AG filed Critical Hilti AG

1992-08-19 Publication of EP0499580A2 publication Critical patent/EP0499580A2/fr

1993-01-27 Publication of EP0499580A3 publication Critical patent/EP0499580A3/de

1995-06-21 Application granted granted Critical

1995-06-21 Publication of EP0499580B1 publication Critical patent/EP0499580B1/fr

2012-01-31 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
- B25B31/00—Hand tools for applying fasteners
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/023—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same using screws
- 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
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53796—Puller or pusher means, contained force multiplying operator
- Y10T29/53839—Puller or pusher means, contained force multiplying operator having percussion or explosive operator
- Y10T29/53843—Tube, sleeve, or ferrule inserting or removing
- 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
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53796—Puller or pusher means, contained force multiplying operator
- Y10T29/53848—Puller or pusher means, contained force multiplying operator having screw operator
- 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
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53796—Puller or pusher means, contained force multiplying operator
- Y10T29/53848—Puller or pusher means, contained force multiplying operator having screw operator
- Y10T29/53857—Central screw, work-engagers around screw
- Y10T29/53878—Tubular or tube segment forms work-engager
- Y10T29/53883—Screw threaded work-engager

Definitions

the invention relates to a pull-out tool for sleeve-shaped objects located in a component, with a shaft which has a conical external thread tapering towards the free end and carries an attacking means at the other end.
a screw unscrewing tool which has a thread with a very large pitch at one end and is provided with an attack means at the other end, which consists of four ground surfaces, each offset by 90 ° to one another.
This commercially available boring tool is particularly suitable for removing broken parts with external threads from tapped holes. Since this known screw unscrewing tool consists of solid material, the application possibilities are restricted.
the invention has for its object to provide a pull-out tool with which an expansion sleeve can be removed despite an anchor bolt passing through it.
the object is achieved in that the extracting tool has a zential, longitudinally extending through hole.
the extraction tool used surrounds an anchor bolt that may be present, the conical one External thread allows access to the gap between the anchor bolt and the expansion sleeve.
the extracting tool is preferably characterized in that the through-bore in the area of the external thread has an internal thread which is matched to the thread of the anchor bolt which may be present and whose axial extent essentially corresponds to the axial extent of the external thread.
the thread pitch of the external thread suitably corresponds to the thread pitch of the internal thread.
the anchor bolt When the external thread is screwed into the expansion sleeve, the anchor bolt can experience an axial movement via the internal thread of the extracting tool if the pitch is not the same. On the one hand, this could lead to the bolt abutting the bottom of the bore, thus preventing the extraction tool from being screwed in further, and on the other hand, an expansion process of the expansion elements could be initiated. For this reason, both threads advantageously have the same pitch.
the wall thickness remaining between the internal thread and the external thread decreases constantly towards the free end. This is achieved in that the thread start of the internal thread and the thread start of the external thread lie on the same radius, which extends from the circumference of the external thread to the center of the extraction tool.
the internal thread and the external thread advantageously converge towards the free end. This creates an annular cutting edge in the end area.
the external thread preferably has an inclination of 2 ° to 7 ° with respect to the longitudinal axis of the extraction tool towards the free end. Due to the low inclination, the extraction tool can continue into the gap between the Anchor bolts and the expansion sleeve are screwed in, so that the external thread can cut a thread serving for axial support into the inner wall of the expansion sleeve.
a pull-out tool is preferably used, the external thread of which has an inclination of 2 °. The flatter the slope, the more threads can be cut in the inner wall. In this way, higher axial pull-out values are achieved.
the external thread of the extraction tool preferably has an incline of 5 ° to 7 °.
the external thread is expediently a cutting thread in order to ensure a connection by means of a thread cutting process. This cutting process is further promoted if the extraction tool advantageously consists of hardenable steel.
FIG. 1 shows an anchor, which is composed of an anchor bolt 14, an expansion sleeve 12, a spacer sleeve 18, a washer 16 and a nut 15.
An axial force applied via the nut 15 causes the expansion elements 12a of the expansion sleeve 12 to expand radially in the area deepest in the borehole.
the second component 17 to be fastened sits between the washer 16 and the surface of the component 13.
a drawing tool 10 with a through bore 10d can be seen in FIG.
the outer diameter of the shaft 10a is smaller than the diameter of a borehole 19.
the extraction tool 10 has a conical external thread 10b which tapers towards the free end.
a force application means 10c is provided at the opposite end.
the through bore 10d of the pull-out tool 10 is larger than the thread diameter of the anchor bolt 14.
the expansion sleeve 12 shown in this example has an internal widening 12b in the area opposite the expansion elements 12a. This extension 12b serves to receive the screwed-in external thread 10b of the extraction tool 10.
the force application means 10c in the form of two pin-shaped elements is arranged at right angles to the longitudinal axis of the extraction tool 10. These pin-shaped elements are inserted in prefabricated bores 10h, protrude up to the inner wall of the through bore 10d and are welded to the outer surface of the extraction tool 10.
Another possibility of designing the force application means 10c is to arrange a pin-shaped one Element that is inserted through both holes 10h and then welded on.
FIG. 3 shows an anchor which essentially corresponds to the anchor in FIG. 1.
the difference between the two anchors lies in the greater length of the thread 4c and in the shape of the expansion sleeve 2, which has no extension.
the extraction tool 1 shown in FIG. 4 has an internal thread 1e on the inner circumference of a through hole 1d, the pitch of which is matched to the thread pitch of an anchor bolt 4.
An external thread 1b has the same pitch as the internal thread 1e. The beginning of the thread lies on the same radius, which extends from the circumference of the external thread 1b to the center of the extraction tool 1. A constant expansion of the wall thickness in the direction of the shaft 1a can thus be achieved.
the conically shaped external thread 1b converges with the internal thread 1e, so that an annular cutting edge which acts towards the free end forms on the end face 1f.
the through hole 1d adjoining the internal thread 1e is of expanded design. Due to this enlarged through hole 1d, the extracting tool 1 can also be used when the anchor bolt 4 is slightly bent.
the nut 5, 15 is loosened and removed together with the washer 6, 16 from the anchor bolt 4, 14.
the component 7, 17 to be fastened is then lifted off the component 3, 13, so that the spacer sleeve 8, 18 can be pulled out without difficulty with a tool in the form of pliers. So that the expansion sleeve 2, 12 can now be relieved, an axial movement of the Anchor bolt 4, 14 take place in the borehole 9, 19.
the nut 5, 15 is screwed back onto the anchor bolt 4, 14, so that the blows emitted to the end face of the anchor bolt 4, 14 are absorbed by the nut 5, 15 and over the thread flanks are transferred to the anchor bolts 4, 14.
the nut 5, 15 is then unscrewed again and the extraction tool 1, 10 is inserted into the borehole 9, 19 so that the conical external thread 1b, 10b comes into contact with the inner wall 2b, 12b of the expansion sleeve 2, 12 in order to achieve a positive connection by cutting a thread.
the extraction tool 1, 10 pulls axially on the expansion sleeve 2, 12 so that the expansion elements 2a, 12a are pressed together.
the further pulling out of the borehole 9, 19 takes place without problems.
the pulling out of the expansion sleeve 2, 12 can be facilitated by means of a striking tool (not shown) arranged in the area of the force application means 1c, 10c.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Dowels (AREA)
Control And Other Processes For Unpacking Of Materials (AREA)
Joining Of Building Structures In Genera (AREA)
Beverage Vending Machines With Cups, And Gas Or Electricity Vending Machines (AREA)
Earth Drilling (AREA)
Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)

EP92810071A 1991-02-11 1992-01-31 Outil d'extraction Expired - Lifetime EP0499580B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4104073		1991-02-11
DE4104073A DE4104073A1 (de)	1991-02-11	1991-02-11	Ausziehwerkzeug

Publications (3)

Publication Number	Publication Date
EP0499580A2 true EP0499580A2 (fr)	1992-08-19
EP0499580A3 EP0499580A3 (en)	1993-01-27
EP0499580B1 EP0499580B1 (fr)	1995-06-21

Family

ID=6424797

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP92810071A Expired - Lifetime EP0499580B1 (fr)	1991-02-11	1992-01-31	Outil d'extraction

Country Status (5)

Country	Link
US (1)	US5201104A (fr)
EP (1)	EP0499580B1 (fr)
AT (1)	ATE123988T1 (fr)
DE (2)	DE4104073A1 (fr)
DK (1)	DK0499580T3 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4220300A1 (de) *	1992-06-20	1993-12-23	Adolf Wuerth Gmbh & Co Kg	Spreizdübel
DE19712174A1 (de) *	1997-03-22	1998-09-24	Fischer Artur Werke Gmbh	Ausziehwerkzeug für einen Spreizanker
DE19713541A1 (de) *	1997-04-02	1998-10-08	Fischer Artur Werke Gmbh	Demontagewerkzeug für einen Spreizdübel
DE102004005459A1 (de) *	2004-02-04	2005-08-25	Fischerwerke Artur Fischer Gmbh & Co. Kg	Umformwerkzeug zum Lösen eines Spreizankers und Verfahren zur Verwendung des Umformwerkzeugs
RU2557725C2 (ru) *	2009-07-06	2015-07-27	Эрбюс Операсьон (С.А.С.)	Резьбовая вставка для цилиндрического гладкого отверстия, устройство для установки и извлечения резьбовой вставки для цилиндрического отверстия, способ для выполнения установки резьбовой вставки в цилиндрическое отверстие и способ для извлечения резьбовой вставки из цилиндрического отверстия
EP2455582A3 (fr) *	2010-11-11	2017-05-17	Dywidag-Systems International PTY Limited	Composant d'ancrage, notamment pour la construction en montagne et de tunnels

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19932863A1 (de) *	1999-07-14	2001-01-18	Hilti Ag	Demontagevorrichtung für formschlüssig verankernden Dübel
US7240588B1 (en)	2002-06-17	2007-07-10	Teleflex Medical Incorporated	Method of making a tool for extracting a broken screw
US6601277B1 (en) *	2002-09-13	2003-08-05	Richard C. Swanson	Puller tool for bolt seals and the like
DE102004035922A1 (de) *	2004-07-23	2006-02-16	Fischerwerke Artur Fischer Gmbh & Co. Kg	Auszieher für eine Spreizhülse eines Spreizankers
US20070123909A1 (en) *	2005-10-27	2007-05-31	Rupp Glenn A	Extractor For Broken Bone Screws
US8567028B2 (en) *	2009-09-17	2013-10-29	Service Solutions U.S. Llc	Injector sleeve removal device and method of use
US20120210568A1 (en) *	2011-02-20	2012-08-23	Yang A-Mei	Uninstaller for taking out brake caliper piston
CN103406869A (zh) *	2013-07-31	2013-11-27	济南二机床集团有限公司	等离子涡流环取出器
US20160279772A1 (en) *	2014-03-25	2016-09-29	I Ray Fitzgerald Woods	Device and Method for Broken Extractor Removal
CN106346409A (zh) *	2016-11-11	2017-01-25	西安近代化学研究所	一种密闭爆发器垫圈拆卸工具
CN109129309A (zh) *	2018-08-28	2019-01-04	西安理工大学	盲孔内衬拆卸工具
CN108908207B (zh) *	2018-08-30	2024-01-19	莱芜钢铁集团有限公司	一种锥面预应力杆拆卸工装及操作方法
CN109877764B (zh) *	2019-03-20	2021-01-01	广东乾诚建筑工程有限公司	一种膨胀螺栓在建筑墙体上的锚固方法
CN111761544B (zh) *	2019-08-28	2021-08-17	北京无线电测量研究所	一种用于组合安装插件的插拔装置
CN111360753B (zh) *	2020-03-25	2024-03-29	上海建工一建集团有限公司	膨胀螺栓拆除装置及其应用施工方法
US20220268055A1 (en) *	2021-02-15	2022-08-25	Mark Peabody	Fence Post Concrete Extractor Device
US12318895B2 (en) *	2022-12-03	2025-06-03	Douglas Waite	Filter extraction tool
CN116810348A (zh) *	2023-07-18	2023-09-29	国营川西机器厂	航空发动机导管内嵌铜垫分解装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1382835A (en) *	1918-10-25	1921-06-28	Arthur K Johnson	Bushing-tool
US2305261A (en) *	1940-11-23	1942-12-15	Myron M Kinley	Method of removing pipe from wells
US4920625A (en) *	1988-12-05	1990-05-01	Smith Mark A	Arrowhead extractor

1991
- 1991-02-11 DE DE4104073A patent/DE4104073A1/de not_active Withdrawn
1992
- 1992-01-31 DE DE59202569T patent/DE59202569D1/de not_active Expired - Lifetime
- 1992-01-31 DK DK92810071.8T patent/DK0499580T3/da active
- 1992-01-31 EP EP92810071A patent/EP0499580B1/fr not_active Expired - Lifetime
- 1992-01-31 AT AT92810071T patent/ATE123988T1/de active
- 1992-02-11 US US07/834,169 patent/US5201104A/en not_active Expired - Fee Related

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4220300A1 (de) *	1992-06-20	1993-12-23	Adolf Wuerth Gmbh & Co Kg	Spreizdübel
DE19712174A1 (de) *	1997-03-22	1998-09-24	Fischer Artur Werke Gmbh	Ausziehwerkzeug für einen Spreizanker
DE19712174C2 (de) *	1997-03-22	2002-10-24	Fischer Artur Werke Gmbh	Ausziehwerkzeug für einen Spreizanker
DE19713541A1 (de) *	1997-04-02	1998-10-08	Fischer Artur Werke Gmbh	Demontagewerkzeug für einen Spreizdübel
DE102004005459A1 (de) *	2004-02-04	2005-08-25	Fischerwerke Artur Fischer Gmbh & Co. Kg	Umformwerkzeug zum Lösen eines Spreizankers und Verfahren zur Verwendung des Umformwerkzeugs
RU2557725C2 (ru) *	2009-07-06	2015-07-27	Эрбюс Операсьон (С.А.С.)	Резьбовая вставка для цилиндрического гладкого отверстия, устройство для установки и извлечения резьбовой вставки для цилиндрического отверстия, способ для выполнения установки резьбовой вставки в цилиндрическое отверстие и способ для извлечения резьбовой вставки из цилиндрического отверстия
EP2455582A3 (fr) *	2010-11-11	2017-05-17	Dywidag-Systems International PTY Limited	Composant d'ancrage, notamment pour la construction en montagne et de tunnels

Also Published As

Publication number	Publication date
DK0499580T3 (da)	1995-10-09
DE4104073A1 (de)	1992-08-13
EP0499580B1 (fr)	1995-06-21
ATE123988T1 (de)	1995-07-15
DE59202569D1 (de)	1995-07-27
EP0499580A3 (en)	1993-01-27
US5201104A (en)	1993-04-13

Legal Events

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1992-07-03	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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1995-10-20	ET	Fr: translation filed
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1996-11-28	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19961128 Year of fee payment: 6
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Publication	Publication Date	Title
EP0499580B1 (fr)	1995-06-21	Outil d'extraction
EP0308619B1 (fr)	1992-03-11	Chéville à expansion
DE10035580B4 (de)	2013-07-25	Formschlüssig setzbarer Hinterschneid-Anker
EP0068227B1 (fr)	1986-01-29	Boulon d'ancrage
EP0308620B1 (fr)	1994-06-01	Piston à expansion
DE3525955C2 (fr)	1988-03-24
EP1510701B1 (fr)	2007-01-03	Dispositif d'assemblage de pièces par fixation avec rivet aveugle
DE3335628C2 (fr)	1991-12-12
WO1991011628A1 (fr)	1991-08-08	Dispositif d'assemblage rivete
EP1837531A2 (fr)	2007-09-26	Elément de fixation
EP0811774A1 (fr)	1997-12-10	Cheville d'ancrage autocoupante
DE4030978A1 (de)	1992-04-09	Verbindungseinrichtung fuer ein insbesondere rohrfoermiges bauteil
EP3346145A1 (fr)	2018-07-11	Dispositif de limitation de couple comportant trois brides
EP0564889A1 (fr)	1993-10-13	Dispositif de raccordement, notamment pour une pièce de construction tubulaire
EP0733813A1 (fr)	1996-09-25	Cheville à expansion
WO2004072495A1 (fr)	2004-08-26	Systeme d'ancrage a contre-depouille pouvant etre mis en place par liaison de forme
DE3139174C2 (de)	1986-08-21	Ankerbolzen
EP1412644A1 (fr)	2004-04-28	Cheville a expansion
DE3502607A1 (de)	1986-07-31	Anker, insbesondere lastabhaengiger duebel
EP0245865B1 (fr)	1989-07-26	Procédé de pose d'une goupille d'ancrage dans un trou foré d'un support et goupille d'ancrage à utiliser avec ce procédé
DE19743054A1 (de)	1999-04-01	Schraubanker
EP0793026B1 (fr)	2002-07-31	Cheville d'expansion
EP0893610B1 (fr)	2001-07-04	Cheville d'expansion
EP0339428B1 (fr)	1991-08-14	Boulon d'ancrage extensible
EP0610465B1 (fr)	1997-05-21	Element de fixation