EP3478453A1 - Outil de pose à douille de sondage - Google Patents

Outil de pose à douille de sondage

Info

Publication number
EP3478453A1
EP3478453A1 EP17732149.4A EP17732149A EP3478453A1 EP 3478453 A1 EP3478453 A1 EP 3478453A1 EP 17732149 A EP17732149 A EP 17732149A EP 3478453 A1 EP3478453 A1 EP 3478453A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
expanding mandrel
setting tool
probing
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.)
Granted
Application number
EP17732149.4A
Other languages
German (de)
English (en)
Other versions
EP3478453B1 (fr
Inventor
Michael Ziltener
Jerome Darbre
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.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP3478453A1 publication Critical patent/EP3478453A1/fr
Application granted granted Critical
Publication of EP3478453B1 publication Critical patent/EP3478453B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

Definitions

  • the invention relates to a setting tool for a hammer anchor, according to the preamble of claim 1.
  • a setting tool is equipped with an expanding mandrel, which has a front end face for acting on an expansion body of the impact anchor and a rear end face for receiving shocks.
  • the invention further relates to a combination of such a setting tool with a felling anchor according to claim 8 and a method for setting a felling anchor using such a setting tool according to claim 9.
  • a generic setting tool for impact anchors is known from DE 3639838 A1.
  • This setting tool has a support shoulder in a front region, on which projections are arranged, which can impress markings in the end face of the impact anchor. By the markings, sufficient spreading of the expansion sleeve of the impact anchor in the sense of setting control is made permanently recognizable and a non-marking end face allows the conclusion that the expansion sleeve is not sufficiently spread and the spreader therefore still needs to be moved to a high anchoring value to reach.
  • Another setting tool is known from DE 4406423 A1.
  • This setting pointer has a handle with a recess which corresponds geometrically with a particular type of impact anchor. Thus, it can be checked that the impact anchor provided for the setting tool is used.
  • DE 1021 12221 1 14 B3 shows a two-part setting tool consisting of a first part for driving a knock-in anchor and a second part which can be placed on the first part for drilling a borehole.
  • the object of the invention is to provide a setting tool, can be set reliably with low production costs and simple operation impact anchor in particularly diverse application situations, and a combination of such Using a setting anchor and a method for setting a impact anchor using such a setting tool specify setting tool.
  • a setting tool is characterized in that it comprises a probing sleeve, which displaceably surrounds the expanding mandrel, and that it has an axial stop for the probing sleeve, which limits a displacement of the probing sleeve towards the rear end side of the expanding mandrel, wherein the expanding mandrel on its front end, in particular axially protruding from the probing sleeve when the probing sleeve rests against the axial stop.
  • the invention has recognized that setting control methods known from the prior art in which the anchors are optically marked when correctly set can under certain circumstances not be sufficient if the anchors are placed in insulated subfloors, ie through insulating layers, as shown in FIG In this case, the markings on the anchors are often not directly visible to the user.
  • the invention begins and provides for setting control a probing sleeve, which surrounds the expanding mandrel, and which is axially displaceable relative to the expanding mandrel. Furthermore, the invention provides an axial stop, which limits the displacement of the probing sleeve relative to the expanding mandrel to the rear, and thus forms an axial position reference for the probing sleeve relative to the expanding mandrel.
  • the expanding mandrel protrudes a little way forward over the probing sleeve when the probing sleeve bears against the axial stop at its rear end, so that the expanding mandrel can act on the impact anchor independently of the probing sleeve.
  • the axial stop can be positioned so that the probing sleeve when reaching the desired depth setting clearance between the expansion of the impact anchor and the axial stop of the setting tool is received, whereby a particularly simple and reliable setting control is possible.
  • a setting tool which, with little effort, enables a particularly reliable setting control even through cover layers, in particular through non-load-bearing layers such as insulation layers. Since the setting control is based on mechanical displacements and not on optical markings, a check is possible in particular in those applications in which the impact anchor is not visible, for example because it is covered by an insulating layer.
  • blows are applied to the rear end side of the expanding mandrel.
  • This can be done directly on the expanding mandrel, but also indirectly, for example via a rear end face of the expanding mandrel covering cap.
  • the rear end face is exposed for immediate impact absorption, which may allow a particularly efficient power transmission.
  • the front end face is in operation on the expansion body of the impact anchor, so that the expanding mandrel transmits the shock to the spreader and drives the spreader for spreading the expansion sleeve in the expansion sleeve.
  • An impact anchor used in the invention may in particular comprise an expansion sleeve, which has an axially extending recess in which an expansion body is arranged, which preferably tapers towards the front.
  • the expansion sleeve on the recess on the front converging converging inclined surfaces, so that the cross-section of the recess decreases towards the front.
  • the spreader acts against the inclined surfaces, whereby the expansion sleeve is spread in its front and thus anchored to the surrounding borehole wall.
  • the impact anchor on the recess may have an internal thread into which a threaded rod can be screwed after anchoring.
  • the expanding mandrel projects axially out of the probing sleeve on its front end face when the probing sleeve bears against the axial stop on its rear side.
  • the setting tool has a handle, preferably made of a plastic material. This allows a particularly reliable handling of the setting tool.
  • the handle surrounds the expanding mandrel at least partially.
  • the handle is at least partially, in particular completely, disposed between the axial stop and the rear end face of the expanding mandrel, which may be advantageous in terms of design complexity and the power consumption.
  • the axial stop for the probing sleeve is preferably an annular shoulder. This represents a manufacturing technology particularly advantageous and at the same time reliable design.
  • the axial stop could be formed on the handle.
  • the axial stop is formed monolithically, that is, without joints, with the expanding mandrel. As a result, a particularly high precision can be achieved with little effort.
  • the setting tool has a captive, which prevents a front-side peeling off the probe sleeve from the expanding mandrel.
  • This captive can prevent the expanding mandrel is completely pulled out of the probe.
  • the captive can be a pin arranged on the expanding mandrel, preferably a threaded pin, and the probing sleeve can have a slot into which the pin engages.
  • the expanding mandrel and / or the probing sleeve are expediently made of a metal material, which may be advantageous in terms of reliability.
  • the handle can be made of a plastic material.
  • the invention also relates to the combination of a setting tool with the associated impact anchor.
  • the invention thus also relates to a combination of a setting tool according to the invention and a hammer anchor with an expansion sleeve and an expansion body for the expansion sleeve, which is arranged in a recess of the expansion sleeve, wherein the expanding mandrel for insertion into the recess and acting on the expansion body at least at its front End cross section smaller than the recess is, and wherein the probing sleeve for probing the position of the expansion sleeve is at least at its front end cross-sectional larger than the recess.
  • the invention also relates to the intended use of the setting tool according to the invention.
  • the invention thus relates to a method for setting a felling anchor, which has an expansion sleeve and an expansion of the expansion sleeve arranged expansion body for the expansion sleeve, in a body of a mineral substrate to which a body at least partially covering the insulating material layer is provided at the
  • a borehole is created which extends through the insulation layer into the body
  • the expanding mandrel of a setting tool according to the invention in particular with its front end face in front, is inserted into the recess of the expansion sleeve of the knock-in anchor,
  • the impact anchor is pushed into the body by means of the setting tool in the borehole through the insulation layer,
  • the expansion sleeve is displaced by at least one blow on the rear end face of the expanding mandrel of the expansion body in the expansion sleeve, in particular to the front, and preferably in this case the expansion sleeve is expanded, and
  • the probing sleeve of the setting tool is movable relative to the expanding mandrel of the setting tool, in particular is axially movable.
  • the testing of whether the probing sleeve of the setting tool is movable relative to the expanding mandrel of the setting tool can in particular be done manually by gripping the probing sleeve and applying axial forces to the probing sleeve. If the probing sleeve is no longer movable and is positioned without play between the expansion sleeve of the impact anchor and the axial stop of the expanding mandrel, the probing sleeve can not be moved despite axial forces.
  • the setting process is continued when it is determined that still has not been set sufficient.
  • Figure 1 a perspective view of a setting tool according to the invention
  • Figure 2 is a side view of the setting tool of Figure 1;
  • Figure 3 is a side view similar to Figure 2 of the setting tool of Figures 1 and 2, wherein the probing sleeve in comparison to Figure 2 a piece far away from the axial stop, that is, in Figure 3 is moved upwards; and
  • FIG. 5 shows a combination of such a setting tool 20 and a striking anchor 10.
  • the setting tool 20 shown has an elongated, pin-shaped expanding mandrel 21 made of metal, in particular steel.
  • the expanding mandrel 21 has a front circular end face 81 and a rear end face 82 at its rear end opposite the front end.
  • the front end face 81 of the expanding mandrel 21 serves to rest on the expansion body 13 of the impact anchor 10, shown inter alia in FIG. 5, and to drive the expansion body 13 into an expansion sleeve 11 of the impact anchor 10.
  • the rear end face 82 of the expansion mandrel 21 arranged opposite the front end 81 serves as a striking surface for picking up blows, especially hammer blows.
  • the setting tool 20 also has a probing sleeve 30, which is traversed by the expanding mandrel 21.
  • This probing sleeve 30 can surround the expanding mandrel 21, for example, in a closed annular manner. But it can also, in particular due to production, a have axially extending slot that divides the probe sleeve 30 so that the probe sleeve 30 surrounds the expanding mandrel 21 C-shaped.
  • the probing sleeve 30 is mounted axially displaceable on the expanding mandrel 21.
  • an annular shoulder pointing to the front end of the expanding mandrel 21 is provided, in particular on the expanding mandrel 21, which forms a rearward axial stop 23 for the probing sleeve 30 and thus limits a displacement of the probing sleeve 30 relative to the expanding mandrel 21 towards the rearward end of the expanding mandrel 21
  • the distance of the axial stop 23 from the front end face 81 of the expanding mandrel 21 is greater than the length of the probing sleeve 30, so that the expanding mandrel 21 protrudes a bit forward over the probing sleeve 30 when the probing sleeve 30 rests against the axial stop 23 on its rear side ,
  • the setting tool 20 further comprises a sleeve-shaped handle 25, which surrounds the expanding mandrel 21 in a region between the axial stop 23 and the rear end face 82 of the expanding mandrel 21.
  • the handle 25 is preferably made of a plastic material.
  • the expanding mandrel 21 is at its rear end, in Figure 2 below, a little way from the handle 25 in front, so that its rear end face 82 is freely accessible for applying hammer blows. This is particularly advantageous in terms of effective momentum transfer.
  • the expanding mandrel 21 could end on its rear side also in the interior of the handle 25, in which case the hammered impactors can be applied indirectly, over the handle, to the expanding mandrel 21.
  • the axial stop 23 is formed monolithically with the expanding mandrel 21. But it can also be performed for example monolithic with the handle 25.
  • the setting tool 20 has a captive securing device which delimits an axial displacement of the probing sleeve 30 on the expanding mandrel 21 towards the front.
  • the captive is formed by a spigot 21 radially projecting pin 29 which engages from the inside into an axially extending slot 39 in the probe sleeve 30.
  • the pin 29 may preferably be a threaded pin.
  • FIGS. 4 to 9 show successive process stages of a method for setting a knock-in anchor 10 by means of the setting tool 20 of FIGS. 1 to 3.
  • a borehole 98 is created, which extends through an insulation layer 92 into a body 91 of a mineral substrate, for example into a floor slab.
  • the impact anchor 10 has an expansion sleeve 1 1 with a central recess 19, in which an expansion body 13 is arranged.
  • the cross section of the recess 19 in the expansion sleeve 1 1 decreases towards the front on inclined surfaces 14.
  • the expansion sleeve 1 1 has an internal thread 18 for screwing a threaded rod into the recess 19, which points into the recess 19.
  • the impact anchor 10 is placed on the setting tool 20 and thereby introduced the front end of the expanding mandrel 21 in the recess 19 of the impact anchor 10.
  • the attached impact anchor 10 is inserted by means of the setting tool 20 in the wellbore 98.
  • the impact anchor 10 is inserted so deeply into the borehole 98 by means of the setting tool 20 until the impact anchor 10 passes through the insulating layer 92 into the body 91.
  • the projection of the expanding mandrel 21 from the probing sleeve 30, that is, the difference between the distance of the front end 81 from the axial stop 23 on the one hand and the length of the probing sleeve 30 on the other hand is matched to the impact anchor 10 that the probing sleeve 30 clearance between the expansion sleeve. 1 1 of the impact anchor 10 and the axial stop 23 is received when the spreader 13 a predetermined path is driven into the expansion sleeve 1 1.
  • the knock-in anchor 10 is set correctly. Thanks to this mechanical setting control, a visual check of imprints as a sign of correct placement is no longer necessary. This can lead to massive time savings in subsidence on insulated surfaces.
  • the setting tool 20 is pulled out of the borehole 98 and the set impact anchor 10 remains in the borehole 98, compare FIG. 9.
  • the expanding mandrel 21 may have in the region of its front end a shoulder 27 with at least one embossing mold, which can impress a depression in the end face of the expansion sleeve 1 1 of the impact anchor 10.
  • This embossing is indicated in FIGS. 8 and 9 by a detail enlargement shown on the right in the figures. By way of example, four depressions are shown.
  • the probing sleeve 30 can be pressed against the expansion sleeve 11 and simultaneously rotated. Since the possibly existing recesses interlock here with the corresponding embossing molds, it can be detected haptically during the rotational movement whether the recesses are present or not.
  • a marker 70 can be provided on the outside of the expanding mandrel 21, in its the axial stop 23 upstream region, as indicated in Figure 3, a marker 70. Covering the marking by the probing sleeve 30 can be interpreted as an indication that the impact anchor 10 is set correctly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

L'invention concerne un outil de pose pour un élément d'ancrage par enfoncement, l'outil de pose comprenant un mandrin expansible qui comprend une face frontale avant servant à solliciter un corps à expansion de l'élément d'ancrage par enfoncement et une face frontale arrière servant à recevoir des coups. Selon l'invention, l'outil de pose comprend une douille de sondage qui entoure le mandrin expansible de manière mobile, et l'outil de pose comprend une butée axiale pour la douille de sondage, laquelle butée axiale limite un déplacement de la douille de sondage vers la face frontale arrière du mandrin expansible, le mandrin expansible faisant saillie, au niveau de sa face frontale avant, à partir de la douille de sondage lorsque la douille de sondage s'appuie contre la butée axiale. L'invention concerne en outre une combinaison d'un tel outil de pose et d'un élément d'ancrage par enfoncement ainsi qu'un procédé de pose d'un élément d'ancrage par enfoncement en utilisant un tel outil de pose.
EP17732149.4A 2016-07-01 2017-06-28 Outil de pose comprenant un manchon de sondage Active EP3478453B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16177524.2A EP3263280A1 (fr) 2016-07-01 2016-07-01 Outil de pose comprenant un manchon de sondage
PCT/EP2017/065961 WO2018002118A1 (fr) 2016-07-01 2017-06-28 Outil de pose à douille de sondage

Publications (2)

Publication Number Publication Date
EP3478453A1 true EP3478453A1 (fr) 2019-05-08
EP3478453B1 EP3478453B1 (fr) 2021-06-16

Family

ID=56411403

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16177524.2A Withdrawn EP3263280A1 (fr) 2016-07-01 2016-07-01 Outil de pose comprenant un manchon de sondage
EP17732149.4A Active EP3478453B1 (fr) 2016-07-01 2017-06-28 Outil de pose comprenant un manchon de sondage

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP16177524.2A Withdrawn EP3263280A1 (fr) 2016-07-01 2016-07-01 Outil de pose comprenant un manchon de sondage

Country Status (2)

Country Link
EP (2) EP3263280A1 (fr)
WO (1) WO2018002118A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1420196A (en) * 1921-03-05 1922-06-20 Cinch Expansion Bolt & Enginee Tamping tool
DE3639838C2 (de) 1986-11-21 1995-07-13 Hilti Ag Treibdorn zum Verankern eines Dübels
DE4406423A1 (de) 1994-02-28 1995-08-31 Hilti Ag Spreizdübel und Spreizdübelsetzgerät
DE102007039141A1 (de) * 2007-08-18 2009-02-19 Fischerwerke Gmbh & Co. Kg Setzwerkzeug
DE102012221114B3 (de) 2012-11-19 2014-04-10 Hilti Aktiengesellschaft Setzwerkzeug für Einschlaganker

Also Published As

Publication number Publication date
WO2018002118A1 (fr) 2018-01-04
EP3263280A1 (fr) 2018-01-03
EP3478453B1 (fr) 2021-06-16

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