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WO1999030043A1 - Cheville metallique expansible - Google Patents

Cheville metallique expansible Download PDF

Info

Publication number
WO1999030043A1
WO1999030043A1 PCT/EP1998/008026 EP9808026W WO9930043A1 WO 1999030043 A1 WO1999030043 A1 WO 1999030043A1 EP 9808026 W EP9808026 W EP 9808026W WO 9930043 A1 WO9930043 A1 WO 9930043A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
metal dowel
metal
drive element
expansion
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.)
Ceased
Application number
PCT/EP1998/008026
Other languages
German (de)
English (en)
Inventor
Joachim Fibranz
Peter Lehniger
Wolfgang Mosig
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.)
Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
Original Assignee
Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
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 Dynamit Nobel AG, Dynamit Nobel GmbH Explosivstoff und Systemtechnik filed Critical Dynamit Nobel AG
Publication of WO1999030043A1 publication Critical patent/WO1999030043A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/006—Explosive bolts; Explosive actuators

Definitions

  • the invention relates to a spreading metal dowel according to the preamble of claims 1, 4 or 6.
  • a spreading metal dowel is known from US 2,573,880, which has a piston driven by a pyrotechnic drive in a housing. After ignition of the drive element, the piston is accelerated by the propellant gases generated and moves from its rest position into a clamping position. During this movement, the piston pulls a slotted expansion element along a slope, so that the expansion element is expanded in the clamping position.
  • the invention has for its object to develop a metal dowel according to the preamble of claims 1, 4 or 6 so that a simplified construction and secure anchoring of the metal dowel, for. B. in concrete.
  • a first embodiment according to the features of claim 1 is characterized in that the upper end of the metal dowel is conical and the expansion element is slidably arranged on the conical end and that the expansion element is a metal clip which is attached to the conical end.
  • Metal dowels are also understood to mean anchor bolts and heavy-duty anchors.
  • This embodiment is characterized by a particularly simple construction.
  • the metal clips are easy to manufacture and only need to be attached to the conical end of the metal dowel.
  • the metal clip is preferably a sleeve cut open in the longitudinal direction.
  • the conical end advantageously has longitudinal slots, ie slots extending in the axial direction.
  • the piston is guided in these longitudinal slots.
  • a second embodiment according to the features of claim 4 is characterized in that the upper end of the metal dowel is sleeve-shaped with slots running in the longitudinal direction and at least one expansion element which is U-shaped in cross section is inserted into the slots.
  • At least one expansion element with a U-shaped cross section is inserted into the sleeve-shaped end.
  • the expansion element is preferably a stamped metal part.
  • the spreading elements are preferably non-positively on their end face with the housing or its upper end, e.g. B. connected by soldering or welding.
  • the piston spreads the two legs of the expansion element in the clamping position.
  • a third embodiment according to the features of claim 6 is characterized in that the upper end of the metal dowel is sleeve-shaped with a fixing bolt running perpendicular to the longitudinal axis and cam disks rotatably mounted on this fixing bolt are arranged as spreading elements.
  • the spreading elements preferably have locking elements on their outer surface, such as, for. B. barbs. These locking elements improve the anchoring, e.g. B. in concrete or stone.
  • the drive element is preferably arranged outside the piston in all embodiments.
  • the drive element is triggered either thermally (for example with a hot probe), mechanically (for example with a hammer pin or hammer) spring-powered firing pin device) or by laser energy (e.g. by a hand laser device)
  • 1a is a longitudinal section of a metal dowel according to the invention with Metallc p in the rest position,
  • FIG. 1b shows a section along the line AA in FIG. 1a
  • FIGS. 1, 2 shows the embodiment according to FIGS. 1, 2 in the clamping position
  • FIG. 4b is a plan view of the upper end of the metal anchor according to FIG. 4a,
  • FIG. 5 shows the embodiment of FIG 4a, b in the tensioned position
  • FIG. 6 shows in longitudinal section an alternative embodiment with rotatably mounted cam disks as spreading elements
  • Figures 1 a, b and 2a, b show a first embodiment of the metal dowel according to the invention each used in concrete 16, but still in the rest position, ie before the triggering of the pyrotechnic drive element
  • Fig. 2a, b shows the same sections as Fig. 1 a, b, however rotated by 90 °
  • FIGS. 1b, 2b each show sections along the lines A - A in FIGS. 1a, 2a
  • the metal dowel or anchor or anchor bolt consists of a housing 5 or dowel body, the upper end 7 of which is conical so that a screw ge 6 is created on this upper or conical end 7 as a spreading element a metal clip 2 is put on or pushed on, which consists of a longitudinally cut sleeve When moving the Metallc ps 2 on the conical end 7, the metal clip 2 expands and presses into the concrete 16 a
  • the upper or conical end 7 has longitudinal slots 8, in which a piston 3 is guided below the metal chip 2.
  • the individual longitudinal slots 8 of the upper or conical end 7 are connected to one another via a locking pin 1.
  • This locking pin 1 also serves as an end stop when the piston 3 is accelerated as described below.
  • a bore 17 is made in the housing 5 below the piston 3, in which there is a drive element 4 is located.
  • An ignition channel 18 extends from the lower front end into the bore 17.
  • the end of the dowel protruding from the borehole is provided with an external thread 19. Alternatively, an internal thread can of course also be provided here.
  • a hole is first drilled as usual.
  • the metal plug is then inserted into this borehole and the drive element 4 is ignited via the ignition channel 18.
  • This can be done in a variety of ways, e.g. B. thermally (e.g. with a hot probe), mechanically (e.g. with a striker with hammer or spring-powered firing pin device) or by laser energy (e.g. using a handheld laser device)
  • the drive element 4 After ignition, the drive element 4 generates propellant gas, which moves the piston 3 in an upward direction, i. H. towards the dowel tip, accelerated.
  • the piston 3 pushes the metal clip 2 onto or along the slope 6 of the upper or conical end 7.
  • the metal clip 2 is spread and pressed into the concrete 16.
  • FIGS. 1, 2, 3 show an alternative embodiment of the metal dowel according to the invention.
  • the upper end 7 of the metal dowel is sleeve-shaped with slots 9 running in the longitudinal direction. See FIG. 4b, which shows a top view of the upper end of the metal dowel according to FIG. 4a.
  • Two expansion elements 10 with a U-shaped cross section are inserted into these slots 9 and welded or soldered to the housing 5 on their end face 11.
  • a piston 3 with a conically shaped tip projects into the space between the legs of the expansion elements 10. Like the piston according to FIGS. 1, 2, 3, this piston 3 has a pin 22 projecting into a bore 17.
  • a drive element 4 is inserted, which is connected via an ignition channel 18 to a holding bore 20 with an internal thread 21. After the metal dowel has been anchored, a screw can be screwed into this holding bore 20.
  • the spreading elements 10 are provided on their outer surface with barbs as locking elements 15.
  • Fig. 5 shows this embodiment in the clamping position, i. H. the drive element 4 was ignited via the holding bore 20 and the ignition channel 18, whereupon the propellant gas formed accelerates the piston 3 upwards in the direction of the expansion elements 10.
  • the expansion elements 10 are spread and the barbed locking elements 15 press into the concrete 16, whereby the metal dowel is firmly anchored. If the concrete or stone loosened, the spreading elements 10 would automatically spread out. This applies to all the described embodiments.
  • FIG. 3 shows a third embodiment of the metal dowel according to the invention.
  • the upper end 7 of the metal dowel is sleeve-shaped with opposite in the longitudinal direction D
  • a fixing bolt 13 extending perpendicular to the longitudinal axis 12 is arranged in these incisions 23.
  • cam disks 14 are placed as spreading elements. In the rest position, these cam disks 14 are arranged at an acute angle to one another.
  • a piston 3 is located on the longitudinal axis 12 and spreads the two cam disks 14 apart when accelerating.
  • the cam disks 14 are provided on their outer surface with locking elements 15, which are pressed into the concrete 16.
  • the piston 3 is provided with a pin 22 which is guided in a bore 17.
  • the drive element 4 is also used. Otherwise, this metal dowel is designed like that of the embodiment according to FIGS. 4, 5, i. H. with holding hole with internal thread. If the drive element 4 is ignited, the propellant gases formed accelerate the piston 3, which spreads the cam disks 14 apart.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Dowels (AREA)

Abstract

L'invention concerne une cheville métallique expansible comportant un corps (5), un élément à écartement expansible et un piston (3) poussé par un élément de poussée (4) pyrotechnique. Ledit piston (3) est, après allumage de l'élément de poussée (4), déplacé en étant accéléré par les gaz propulseurs, pour passer d'une position de repos à une position d'écartement, ce piston (3) écartant l'élément à écartement lorsqu'il est dans ladite position d'écartement. Dans le mode de réalisation préféré, cet élément à écartement est disposé de façon à pouvoir se déplacer sur une partie inclinée (6). Pour simplifier la construction et permettre d'obtenir un ancrage sûr, différentes formes de réalisation sont proposées, une forme de réalisation préférée se caractérisant par le fait que l'extrémité (7) supérieure de la cheville métallique présente une forme conique, que l'élément à écartement est disposé, de façon à pouvoir se déplacer, sur cette extrémité conique (7) et se présente sous la forme d'un clip (2) métallique monté sur l'extrémité (7) conique.
PCT/EP1998/008026 1997-12-10 1998-12-10 Cheville metallique expansible Ceased WO1999030043A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19754792.3 1997-12-10
DE1997154792 DE19754792A1 (de) 1997-12-10 1997-12-10 Nachspreizender Metalldübel

Publications (1)

Publication Number Publication Date
WO1999030043A1 true WO1999030043A1 (fr) 1999-06-17

Family

ID=7851378

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/008026 Ceased WO1999030043A1 (fr) 1997-12-10 1998-12-10 Cheville metallique expansible

Country Status (2)

Country Link
DE (1) DE19754792A1 (fr)
WO (1) WO1999030043A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573880A (en) 1950-09-20 1951-11-06 Temple Velocity Equipment Inc Explosively actuated anchor for mine roof bolts
US3302509A (en) * 1964-04-03 1967-02-07 Henry J Modrey Expansion anchor
US3311012A (en) * 1965-03-11 1967-03-28 Chester I Williams Pressure-actuated expanding anchor
US3389561A (en) * 1966-05-23 1968-06-25 English Electric Co Ltd Method of and apparatus for providing anchors in earth and/or rock formations
DE2735978A1 (de) * 1976-08-12 1978-02-16 Atomenergi Ab Verfahren zur befestigung eines gesteinsbolzens
US4909686A (en) * 1986-04-23 1990-03-20 Dynamit Nobel Ag Pyrotechnical dowel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK137690B (da) * 1975-04-10 1978-04-17 Torben Bredal Forankringsbolt.
AUPN159095A0 (en) * 1995-03-07 1995-03-30 Pecotic, Vicko Fixing device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573880A (en) 1950-09-20 1951-11-06 Temple Velocity Equipment Inc Explosively actuated anchor for mine roof bolts
US3302509A (en) * 1964-04-03 1967-02-07 Henry J Modrey Expansion anchor
US3311012A (en) * 1965-03-11 1967-03-28 Chester I Williams Pressure-actuated expanding anchor
US3389561A (en) * 1966-05-23 1968-06-25 English Electric Co Ltd Method of and apparatus for providing anchors in earth and/or rock formations
DE2735978A1 (de) * 1976-08-12 1978-02-16 Atomenergi Ab Verfahren zur befestigung eines gesteinsbolzens
US4909686A (en) * 1986-04-23 1990-03-20 Dynamit Nobel Ag Pyrotechnical dowel

Also Published As

Publication number Publication date
DE19754792A1 (de) 1999-06-17

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