EP0752296B1 - Setting tool for anchor bolts - Google Patents

Setting tool for anchor bolts Download PDF

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Publication number
EP0752296B1
EP0752296B1 EP96108549A EP96108549A EP0752296B1 EP 0752296 B1 EP0752296 B1 EP 0752296B1 EP 96108549 A EP96108549 A EP 96108549A EP 96108549 A EP96108549 A EP 96108549A EP 0752296 B1 EP0752296 B1 EP 0752296B1
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EP
European Patent Office
Prior art keywords
clamping
piston
expansion
anchor
installation apparatus
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
EP96108549A
Other languages
German (de)
French (fr)
Other versions
EP0752296A1 (en
Inventor
Herbert Erath
Christian Schmid
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.)
Fischerwerke Artur Fischer GmbH and Co KG
Original Assignee
Fischerwerke Artur Fischer GmbH and Co KG
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Publication of EP0752296A1 publication Critical patent/EP0752296A1/en
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Publication of EP0752296B1 publication Critical patent/EP0752296B1/en
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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
    • 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
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • Y10T29/49943—Riveting

Definitions

  • the invention relates to a setting device for setting an expansion anchor in a Undercut borehole.
  • Expansion anchors point away from a shaft, for example cone-shaped expanding head. He is going into a borehole with a Undercut, which has the shape of a hollow cone, for example, introduced.
  • a shaft for example cone-shaped expanding head.
  • a Undercut which has the shape of a hollow cone, for example, introduced.
  • a setting tool for an expansion anchor is known, which on a The shaft of the expansion anchor can be screwed on. With a hammer blows over a Shaft of the expansion anchor overlap sleeve of the setting tool an impact sleeve of Expansion anchor driven onto an expansion head of the expansion anchor and thereby the Spread anchors spread.
  • the shaft screwed into the setting tool is removed from the Setting tool retained, the setting tool on a workpiece in which the Expansion anchor is anchored, supported.
  • the setting tool is unscrewed from the anchored expansion anchor.
  • the well-known setting tool has the disadvantage that it expands when the expansion sleeve on the expansion body supported on the workpiece in order to retain the shaft of the expansion anchor, see above that parts from the surface of the workpiece can flake off.
  • An additional disadvantage, particularly in the case of plate-shaped workpieces is that the workpiece breaks due to the impact stress when spreading can.
  • the Setting tool according to the invention has a pressure-operated clamping device, by means of which an expansion anchor can be clamped to its shaft in the setting tool.
  • a the shaft part of the tensioning device which is fixed in the expansion anchor is immovable in one Housing of the setting tool attached, is thus retained by the housing during the spreading process, so that the expansion anchor does not exert any forces on the workpiece.
  • the setting tool according to the invention also has a pressure-actuated one Spreading device on, the expansion piston a expansion sleeve of the expansion anchor on the Pushes on the expansion head of the expansion anchor and thereby spreads the expansion anchor. Since the Expansion piston is pressurized with the same pressure as the housing, which is in the Clamping device, the shaft of the expansion anchor is firmly fixed in the housing retained with the same force with which the expansion piston pushes the expansion sleeve onto the Slides on the expansion head. This results in a closed force curve, the workpiece is neither due to the spreading process with a force at the bottom of the borehole nor applied to its surface so that damage to the workpiece is avoided become. Expansion anchors can therefore also be used by means of the setting device according to the invention in thin workpieces with a small remaining wall thickness at the bottom of the borehole.
  • a pressure relief valve separates when the anchor shaft is tightened in the tensioning device an expanding piston pressure chamber from a pressurized clamping piston pressure chamber ab, the expansion piston pressure space is during the tightening of the shaft of the armature thus depressurized. Only opens when a clamping pressure is reached in the clamping piston pressure chamber the pressure relief valve, so that the expansion piston pressure chamber is also pressurized. Switching from tightening the expansion anchor in the setting tool to spreading the The expansion anchor is therefore fully automatic and only after the clamping pressure has been reached and thus after reaching a predeterminable clamping force, which ensures that the Ensures the shaft of the expansion anchor in the setting tool during the expansion process.
  • the tensioning device is actuated and / or expanding pistons with compressed air.
  • the clamping device has a clamping piston with a pressurizable piston Clamping cone on.
  • the tensioning piston is provided with a bore with which it opens a collet is slidably guided, which for clamping the shaft of the Expansion anchor serves.
  • the tensioning piston moves The clamping cone comes onto a cone of the collet and presses it to clamp of the shaft of the expansion anchor in the radial direction.
  • the collet is rigid connected to a housing of the setting tool, it does not move with the tensioning piston With. To this way you get a simply constructed, reliably functioning Clamping device with only one moving part, the clamping piston.
  • the setting tool a pressurizable Expansion piston on which the expansion sleeve of the tensioned in the clamping device Expansion anchor moves in the direction of its expansion head and the This spreads the expansion anchor.
  • a further development of the invention sees one Expanding piston with an axial bore in which the clamping piston is recorded.
  • the expanding piston encloses the clamping piston, the two Pistons are slidable in the axial direction against each other.
  • This embodiment of the invention has another Advantage that the clamping device and the spreading device coaxially on the Expansion anchors act and, as a result, moments when the anchor is expanded arise neither within the setting tool nor at the anchor.
  • the setting tool according to the invention can be used both as a handheld device and also in an automatic setting machine for the automatic setting of expansion anchors integrate.
  • the typesetter is preferably in a fully automatic Drilling rig uses workpieces such as plates or tiles with undercuts provided drill holes at predetermined locations. On In this way, drilling and setting of expansion anchors are carried out precisely and quickly on a plant.
  • the setting tool 10 according to the invention shown in FIG. 1 has one Hollow cylinder 12, one end of which is sealed with a cover 14 is closed.
  • the cover 14 is screwed to the hollow cylinder 12.
  • Hollow cylinder 12 and cover 14 form a housing of the setting tool 10.
  • a flat stop ring 16 is provided with the end face opposite the cover 14 the hollow cylinder 12 screwed, which is a piece radially inward over the Hollow cylinder 12 survives.
  • an expansion piston 18 is displaceable in the axial direction added.
  • two flat piston grooves near the two ends of the Expanding pistons 18 have circumferential guide bands 20 inserted.
  • Of the Expansion piston 18 is by means of an O-ring 22 inserted into a piston groove sealed against the hollow cylinder 12.
  • the spreading disc 24 is located within the stop ring 16, it has radial play Stop ring 16 on. In the middle is the spreading disc 24 with a hole 26 provided that a shaft 28 of an expansion anchor 30, 32 is pushed through allowed (two expansion anchor types 30, 32 are each shown in half in FIG. 1).
  • An expansion sleeve 34 which is displaceable on the shaft 28 of the expansion anchor 30, 32 abuts on one edge of the bore 26 against the expansion disk 24.
  • Die Expansion sleeve 34 is used to spread one end or a separate one Expansion part 36 via an expansion cone 38 which is connected to the shaft 28 of the Expansion anchor 30, 32 is in one piece.
  • the expansion piston 18 is provided with an axial bore 39 in which a Tensioning piston 40 is slidably received in the axial direction. This points a circumferential guide band 42, which in a flat piston groove near one the expansion plate 24 facing end face is inserted and that Clamping piston 40 in the expansion piston 18 leads. By means of a piston groove inserted O-rings 44 are the tensioning piston 40 and the expansion piston 18 sealed against each other.
  • the expansion piston 40 is in one guided hollow cylindrical extension 46 which is integral with the lid 14 and by a little less than half a piston length in the axial direction Hollow cylinder 12 protrudes.
  • a rotating one Guide band 48 into a flat piston groove near the cover 14 facing end of the tensioning piston 40 inserted.
  • the tensioning piston 40 is sealed against the extension 46 of the cover 14 with an O-ring 50 which in a piston groove is inserted.
  • the bore 39 in the expansion piston 18 is designed as a stepped bore, which is in Extended direction of the lid 14.
  • the extension 46 is at least radial Direction play to the expanding piston 18.
  • the tensioning piston 40 has an axial bore 51 which is located on one of the Expanding plate 24 facing end extended to a clamping cone 52.
  • a known collet 54 In the Bore 51 of the clamping piston 40 is a known collet 54 with a cone 56 added.
  • the collet 54 is with a Screw sleeve 58 carrying internal thread screwed on the cover side End protrudes from the tensioning piston 40 and into a stepped bore of the cover 14 protrudes. With a screw 60, the screw sleeve 58 with the cover 14 screwed.
  • the collet 54 is rigid with the screw sleeve 58 Screwed cover 14. With two O-rings 62, 64, the screw sleeve is against the tensioning piston 40 and the cover 14 sealed.
  • the cover 14 delimits a clamping piston pressure chamber 66 inside it hollow cylindrical extension 46, which is completed by the tensioning piston 40.
  • a twice angled hole in the cover 14 leads as a fluid or Compressed air passage 70 from the clamping piston pressure chamber 66 to one Expansion piston pressure chamber 72.
  • the expansion piston pressure chamber 72 is from Hollow cylinder 12, from the cover 14, from the expansion piston 18 and the circumference of the Clamping piston 40 limited.
  • a pressure relief valve 74 In the compressed air passage 70 is a pressure relief valve 74 with a spring-loaded Valve piston 76 attached.
  • the spring tension of a valve spring 78, and thus the opening pressure of the pressure relief valve 74 is by means of a threaded pin 80 adjustable.
  • the pressure relief valve 74 In its basic position, the pressure relief valve 74 is closed and blocks the compressed air passage 70 from the clamping piston pressure chamber 66 to Expansion piston pressure chamber 72.
  • the valve piston 76 has two cross bores 82 crossing each other provided, which open into a piston groove 84. From the crossing point of the Cross bores 82 leads an axial blind bore 86 axially to one with the Valve chamber 87 communicating with the environment. Via the bores 82, 86 in the Valve piston 76 and the compressed air passage 70 communicates the Expansion piston pressure space 72 with the environment, d. H. it is vented.
  • the Piston groove 84 of the valve piston 76 causes the transverse bores 82 of the Valve piston 76 regardless of the rotational position of the valve piston 76 with the part of the compressed air passage 70 leading into the expansion piston pressure space 72 communicate.
  • the setting tool 10 functions as follows: the shaft 28 of a Expansion anchor 30, 32 is through the hole 26 of the expansion plate 24 in the Collet 54 introduced.
  • the clamping piston pressure chamber 66 is through the Compressed air connection 68 pressurized with compressed air, causing the tensioning piston 40 moves in the direction of the expansion plate 24.
  • the clamping cone 52 of the Clamping piston 40 slides onto the cone 56 of the collet 54 and presses whose jaws radially together, causing the shaft 28 of the expansion anchor 30, 32 is tensioned.
  • the valve piston 76 closes the Compressed air passage 70, the collet pressure chamber 66 is hermetic closed.
  • the spring-loaded valve piston 76 releases the compressed air passage 70 so that Compressed air from the collet pressure chamber 66 into the expansion piston pressure chamber 72 overflows.
  • the valve piston 76 blocks its transverse bores 82, so that the expansion piston pressure space 72 is closed off from the environment.
  • the Compressed air in the expansion piston pressure chamber 72 moves the expansion piston 40 to Stop on the stop ring 16. In doing so, it moves with the expansion piston 40 screwed expansion ring 24, the expansion sleeve 34 in the direction of the expansion head 38 of the expansion anchor 30, 32.
  • the expansion sleeve 34 itself or Spreading part 36 spread and the expansion anchor 30, 32 in one not illustrated borehole with a conical undercut, for example anchored.
  • the compressed air is through the Release the compressed air connection 68 from the clamping piston pressure chamber 66. Press helical compression springs 88, which are supported against the expansion plate 24 the tensioning piston 40 back into a starting position.
  • the collet 54 opens itself, so that the setting tool 10 of the shaft 28 of the Expansion anchor 30, 32 can be removed.
  • the expansion piston pressure chamber 72 is vented through the pressure relief valve 74, as soon as its valve piston 76, the compressed air passage 70 as it decreases Pressure in the clamping piston pressure chamber 66 closes.
  • Coil compression springs 90 the are supported against the stop ring 16, push the tensioning piston 18 in his starting position back.
  • the setting tool 10 with a Compressed air connection 68 screwed handle 92 in the form of a pistol grip shown, which has a compressed air connection 94.
  • a Compressed air valve operable by means of a finger lever 96.
  • the setting device 10 is vented by finger lever 96.
  • FIG. 3 shows the use of the setting tool 10 according to the invention in one Automatic setting machine 100 for setting and anchoring expansion anchors in Boreholes.
  • the expansion anchor 32 contains.
  • a slide 104 Under an estuary of the magazine 102 there is a slide 104, which is one Pneumatic cylinder 106 is actuated.
  • a blind bore 108 in the slide 104 serves to receive an expansion anchor 32.
  • the remaining expansion anchors 32 are from a pneumatically operated separating device 110 in the magazine 102 held back.
  • the setting tool 10 is by means of a rod guide 112 in the vertical direction slidably held on the automatic setting machine 100 and by means of a pneumatic Lift cylinder 114 drivable for a lifting movement.
  • the setting tool 10 is placed on the expansion anchor 32 by means of the lifting cylinder 114 lowered and this tensioned by compressed air supply at the compressed air connection 68.
  • the setting tool 10 is then raised again by the lifting cylinder 114, so that the expansion anchor 32 from the blind bore 108 of the slide 104th got out.
  • the pneumatic cylinder 106 of the slide 104 moves it to Side, so that the setting tool 10 can be moved freely down.
  • the expansion piston pressure space 72 is passed through a second compressed air connection 116 is supplied with compressed air.
  • the second Compressed air connection 116 is in place of the pressure relief valve 74 in the Compressed air passage 70 screwed in and closes it in the direction of Clamping piston pressure chamber 66.
  • the separating device 110 gives an expansion anchor during the setting 32 free from the magazine 102, which in the blind bore 108 of the slide 104th falls and is fed to the setting tool 10 by moving the slide 104.
  • a height-adjustable stop 118 on the slide 104 limits the Tension depth of the expansion anchor in the setting device 10 and in this way gives the Displacement of the expansion sleeve 34 on the expansion anchor 32 in front.
  • Figure 4 shows a section of a system for attaching Undercuts drill holes in plates, tiles or the like. And for placing expansion anchors in the drill holes.
  • the system 120 has two known drilling devices 122, which on a cross member 124 are movably attached.
  • the cross member 124 is in turn on one Machine frame 126 of the system 120 transversely to the direction of travel of the Drilling devices 122 movable. Workpieces not shown can be opened a work surface 128 of the machine frame 126 under the drilling devices Store 122.
  • the system 120 is preferably fully automatic operated computer controlled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Dowels (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Earth Drilling (AREA)

Abstract

The expanding anchor (18,24) is movable in relation to the tensioning appliance (40,54) in the longitudinal direction of an inserted straddling tie-piece (30,32). The anchor moves the expander sleeve (34) which is on the shaft (28) of the tie-piece towards the tie piece head (38) to expand it. The anchor has a collet (54), and a clamping cone (52) movable by a clamping piston (40). The expander sleeve has a piston (18) for moving the expander sleeve towards the tie piece head. An excess pressure valve (74) in a fluid duct (70) leading from a clamping piston pressure chamber (66) to a straddling piston pressure chamber (72) opens the fluid duct when the clamping pressure in the clamping piston pressure chamber is reached.

Description

Die Erfindung betrifft ein Setzgerät zum Setzen eines Spreizankers in ein eine Hinterschneidung aufweisendes Bohrloch.The invention relates to a setting device for setting an expansion anchor in a Undercut borehole.

Spreizanker weisen einen sich von einem Schaft weg beispielsweise konusförmig erweiternden Spreizkopf auf. Er wird in ein Bohrloch mit einer Hinterschneidung, die beispielsweise die Form eines Hohlkonus aufweist, eingeführt. Durch Verschieben einer Spreizhülse auf dem Schaft des Spreizankers wird entweder die Hülse selbst oder ein Spreizteil auf den Spreizkopf aufgeschoben und dabei aufgespreizt, wodurch der Spreizanker im Bohrloch formschlüssig verankert ist.Expansion anchors point away from a shaft, for example cone-shaped expanding head. He is going into a borehole with a Undercut, which has the shape of a hollow cone, for example, introduced. By moving an expansion sleeve on the shaft of the Expansion anchor is either the sleeve itself or an expansion part on the Spreading head pushed on and spread apart, whereby the expansion anchor in Drill hole is anchored positively.

Beim Aufschieben der Spreizhülse bzw. des Spreizteils auf den Spreizkopf des Spreizankers wird der Spreizanker in das Bohrloch hineingedrückt, sein Spreizkopf drückt gegen einen Bohrlochgrund. Platten oder Fliesen, in welche ein Spreizanker gesetzt wird, können dadurch am Bohrlochgrund brechen, insbesondere wenn dort die Restwanddicke gering ist. When pushing the expansion sleeve or the expansion part onto the expansion head of the The expansion anchor will be pressed into the borehole Spreader head presses against the bottom of a borehole. Slabs or tiles in which an expansion anchor can be set at the bottom of the borehole, especially if the remaining wall thickness is small there.

Aus der US-A-4 627 140 ist ein Setzgerät für einen Spreizanker bekannt, das auf einen Schaft des Spreizankers aufschraubbar ist. Mit Hammerschlägen wird über eine den Schaft des Spreizankers übergreifende Hülse des Setzgeräts eine Einschlaghülse des Spreizankers auf einen Spreizkopf des Spreizankers aufgetrieben und dadurch der Spreizanker aufgespreizt. Dabei wird der in das Setzgerät eingeschraubte Schaft vom Setzgerät rückgehalten, wobei sich das Setzgerät an einem Werkstück, in dem der Spreizanker verankert wird, abstützt. Das Setzgerät wird durch Abschrauben vom verankerten Spreizanker gelöst. Das bekannte Setzgerät hat den Nachteil, daß es sich beim Auftreiben der Spreizhülse auf den Spreizkörper am Werkstück abstützt, um den Schaft des Spreizankers rückzuhalten, so daß Teile aus der Oberfläche des Werkstücks abplatzen können. Zusätzlicher Nachteil insbesondere bei plattenförmigen Werkstücken ist, daß das Werkstück durch die Schlagbeanspruchung beim Aufspreizen brechen kann.From US-A-4 627 140 a setting tool for an expansion anchor is known, which on a The shaft of the expansion anchor can be screwed on. With a hammer blows over a Shaft of the expansion anchor overlap sleeve of the setting tool an impact sleeve of Expansion anchor driven onto an expansion head of the expansion anchor and thereby the Spread anchors spread. The shaft screwed into the setting tool is removed from the Setting tool retained, the setting tool on a workpiece in which the Expansion anchor is anchored, supported. The setting tool is unscrewed from the anchored expansion anchor. The well-known setting tool has the disadvantage that it expands when the expansion sleeve on the expansion body supported on the workpiece in order to retain the shaft of the expansion anchor, see above that parts from the surface of the workpiece can flake off. An additional disadvantage, particularly in the case of plate-shaped workpieces is that the workpiece breaks due to the impact stress when spreading can.

Es ist daher Aufgabe der Erfindung, ein Setzgerät der eingangs genannten Art so auszubilden, daß die beim Setzen eines Spreizankers auf ein Werkstück wirkenden Kräfte, insbesondere am Bohrlochgrund, klein sind, um Beschädigungen des Werkstücks zu vermeiden.It is therefore an object of the invention to design a setting tool of the type mentioned in the introduction, that the forces acting on a workpiece when an expansion anchor is set, are small, especially at the bottom of the borehole, in order to damage the workpiece avoid.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst. Das erfindungsgemäße Setzgerät weist eine druckbetätigte Spanneinrichtung auf, mittels derer ein Spreizanker an seinem Schaft im Setzgerät festspannbar ist. Ein den Schaft des Spreizankers festspannendes Teil der Spanneinrichtung ist unverschieblich in einem Gehäuse des Setzgeräts angebracht, wird also beim Spreizvorgang vom Gehäuse rückgehalten, so daß der Spreizanker keine Kräfte auf das Werkstück ausübt.This object is achieved by the features of claim 1. The Setting tool according to the invention has a pressure-operated clamping device, by means of which an expansion anchor can be clamped to its shaft in the setting tool. A the shaft part of the tensioning device which is fixed in the expansion anchor is immovable in one Housing of the setting tool attached, is thus retained by the housing during the spreading process, so that the expansion anchor does not exert any forces on the workpiece.

Des weiteren weist das erfindungsgemäße Setzgerät eine ebenfalls druckbetätigte Spreizeinrichtung auf, deren Spreizkolben eine Spreizhülse des Spreizankers auf den Spreizkopf des Spreizankers aufschiebt und dadurch den Spreizanker aufspreizt. Da der Spreizkolben mit demselben Druck beaufschlagt wird wie das Gehäuse, wird der in der Spanneinrichtung unverschieblich im Gehäuse festgespannte Schaft des Spreizankers mit derselben Kraft rückgehalten, mit der der Spreizkolben die Spreizhülse auf den Spreizkopf aufschiebt. Es ergibt sich somit ein geschlossener Kraftverlauf, das Werkstück wird durch den Spreizvorgang weder mit einer Kraft am Bohrlochgrund noch an seiner Oberfläche beaufschlagt, so daß Beschädigungen des Werkstücks vermieden werden. Mittels des erfindungsgemäßen Setzgeräts lassen sich daher Spreizanker auch in dünne Werkstücke mit geringer Restwanddicke am Bohrlochgrund setzen.Furthermore, the setting tool according to the invention also has a pressure-actuated one Spreading device on, the expansion piston a expansion sleeve of the expansion anchor on the Pushes on the expansion head of the expansion anchor and thereby spreads the expansion anchor. Since the Expansion piston is pressurized with the same pressure as the housing, which is in the Clamping device, the shaft of the expansion anchor is firmly fixed in the housing retained with the same force with which the expansion piston pushes the expansion sleeve onto the Slides on the expansion head. This results in a closed force curve, the workpiece is neither due to the spreading process with a force at the bottom of the borehole nor applied to its surface so that damage to the workpiece is avoided become. Expansion anchors can therefore also be used by means of the setting device according to the invention in thin workpieces with a small remaining wall thickness at the bottom of the borehole.

Ein Überdruckventil trennt beim Festspannen des Ankerschafts in der Spanneinrichtung einen Spreizkolbendruckraum von einem druckbeaufschlagten Spannkolbendruckraum ab, der Spreizkolbendruckraum ist während des Festspannens des Schafts des Ankers somit drucklos. Erst bei Erreichen eines Spanndrucks im Spannkolbendruckraum öffnet das Überdruckventil, so daß auch der Spreizkolbendruckraum druckbeaufschlagt wird. Das Umschalten vom Festspannen des Spreizankers im Setzgerät zum Aufspreizen des Spreizankers erfolgt somit vollautomatisch und erst nach Erreichen des Spanndrucks und damit nach Erreichen einer vorgebbaren Spannkraft, die einen festen Sitz des Schafts des Spreizankers im Setzgerät während des Spreizvorgangs sicherstellt.A pressure relief valve separates when the anchor shaft is tightened in the tensioning device an expanding piston pressure chamber from a pressurized clamping piston pressure chamber ab, the expansion piston pressure space is during the tightening of the shaft of the armature thus depressurized. Only opens when a clamping pressure is reached in the clamping piston pressure chamber the pressure relief valve, so that the expansion piston pressure chamber is also pressurized. Switching from tightening the expansion anchor in the setting tool to spreading the The expansion anchor is therefore fully automatic and only after the clamping pressure has been reached and thus after reaching a predeterminable clamping force, which ensures that the Ensures the shaft of the expansion anchor in the setting tool during the expansion process.

Bei einer bevorzugten Ausgestaltung der Erfindung erfolgen die Betätigung von Spanneinrichtung und/oder Spreizkolben mit Druckluft. Die Spanneinrichtung weist dazu einen druckbeaufschlagbaren Spannkolben mit einem Spannkonus auf. Der Spannkolben ist mit einer Bohrung versehen, mit welcher er auf einer Spannzange verschiebbar geführt ist, welche zum Spannen des Schafts des Spreizankers dient. Bei Druckbeaufschlagung verschiebt sich der Spannkolben, sein Spannkonus gelangt auf einen Konus der Spannzange und drückt diese zum Spannen des Schafts des Spreizankers in radialer Richtung zusammen. Die Spannzange ist starr mit einem Gehäuse des Setzgeräts verbunden, sie bewegt sich nicht mit dem Spannkolben mit. Auf diese Weise erhält man eine einfach aufgebaute, zuverlässig funktionierende Spanneinrichtung mit nur einem beweglichen Teil, dem Spannkolben.In a preferred embodiment of the invention, the tensioning device is actuated and / or expanding pistons with compressed air. The For this purpose, the clamping device has a clamping piston with a pressurizable piston Clamping cone on. The tensioning piston is provided with a bore with which it opens a collet is slidably guided, which for clamping the shaft of the Expansion anchor serves. When pressure is applied, the tensioning piston moves The clamping cone comes onto a cone of the collet and presses it to clamp of the shaft of the expansion anchor in the radial direction. The collet is rigid connected to a housing of the setting tool, it does not move with the tensioning piston With. To this In this way you get a simply constructed, reliably functioning Clamping device with only one moving part, the clamping piston.

Gemäß der Erfindung weist das Setzgerät einen druckbeaufschlagbaren Spreizkolben auf, der die Spreizhülse des in der Spanneinrichtung gespannten Spreizankers in Richtung auf dessen Spreizkopfs verschiebt und den Spreizanker dadurch aufspreizt. Eine Weiterbildung der Erfindung sieht einen Spreizkolben mit einer axialen Bohrung vor, in welcher der Spannkolben aufgenommen ist. Der Spreizkolben umschließt den Spannkolben, die beiden Kolben sind ineinander in Achsrichtung gegeneinander verschiebbar geführt. Auf diese Weise läßt sich eine kompakte Bauform des erfindungsgemäßen Setzgeräts erreichen. Diese Ausführungsform der Erfindung hat den weiteren Vorteil, daß die Spanneinrichtung und die Spreizeinrichtung koaxial auf den Spreizanker wirken und infolgedessen Momente beim Spreizen des Ankers weder innerhalb des Setzgeräts noch am Anker entstehen.According to the invention the setting tool a pressurizable Expansion piston on which the expansion sleeve of the tensioned in the clamping device Expansion anchor moves in the direction of its expansion head and the This spreads the expansion anchor. A further development of the invention sees one Expanding piston with an axial bore in which the clamping piston is recorded. The expanding piston encloses the clamping piston, the two Pistons are slidable in the axial direction against each other. On in this way, a compact design of the invention Reach the setting tool. This embodiment of the invention has another Advantage that the clamping device and the spreading device coaxially on the Expansion anchors act and, as a result, moments when the anchor is expanded arise neither within the setting tool nor at the anchor.

Das erfindungsgemäße Setzgerät läßt sich sowohl als Handgerät verwenden als auch in einen Setzautomaten zum automatischen Setzen von Spreizankern integrieren. Der Setzautomat wird vorzugsweise in einer vollautomatischen Bohranlage verwendet, die Werkstücke wie Platten oder Fliesen mit Hinterschneidungen aufweisenden Bohrlöchern an vorgegebenen Stellen versieht. Auf diese Weise erfolgen Bohren und Setzen von Spreizankern präzise und schnell auf einer Anlage.The setting tool according to the invention can be used both as a handheld device and also in an automatic setting machine for the automatic setting of expansion anchors integrate. The typesetter is preferably in a fully automatic Drilling rig uses workpieces such as plates or tiles with undercuts provided drill holes at predetermined locations. On In this way, drilling and setting of expansion anchors are carried out precisely and quickly on a plant.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:

Figur 1
einen Achsschnitt durch ein erfindungsgemäßes Setzgerät;
Figur 2
eine perspektivische Darstellung des Setzgeräts aus Figur 1 mit einem daran angebrachten Handgriff;
Figur 3
einen Setzautomaten mit dem Setzgerät aus Figur 1 gemäß der Erfindung; und
Figur 4
das in eine vollautomatische Bohranlage integrierte Setzgerät aus Figur 1.
The invention is explained in more detail below with reference to an embodiment shown in the drawing. Show it:
Figure 1
an axial section through a setting tool according to the invention;
Figure 2
a perspective view of the setting tool of Figure 1 with a handle attached to it;
Figure 3
a setting machine with the setting device of Figure 1 according to the invention; and
Figure 4
the setting tool from FIG. 1 integrated into a fully automatic drilling system.

Das in Figur 1 dargestellte, erfindungsgemäße Setzgerät 10 weist einen Hohlzylinder 12 auf, dessen eine Stirnseite mit einem Deckel 14 dicht verschlossen ist. Der Deckel 14 ist mit dem Hohlzylinder 12 verschraubt. Hohlzylinder 12 und Deckel 14 bilden ein Gehäuse des Setzgeräts 10. Auf einer dem Deckel 14 gegenüberliegenden Stirnseite ist ein flacher Anschlagring 16 mit dem Hohlzylinder 12 verschraubt, der ein Stück radial nach innen über den Hohlzylinder 12 übersteht.The setting tool 10 according to the invention shown in FIG. 1 has one Hollow cylinder 12, one end of which is sealed with a cover 14 is closed. The cover 14 is screwed to the hollow cylinder 12. Hollow cylinder 12 and cover 14 form a housing of the setting tool 10. On a A flat stop ring 16 is provided with the end face opposite the cover 14 the hollow cylinder 12 screwed, which is a piece radially inward over the Hollow cylinder 12 survives.

Im Hohlzylinder 12 ist ein Spreizkolben 18 in axialer Richtung verschiebbar aufgenommen. In zwei flache Kolbennuten nahe den beiden Stirnenden des Spreizkolbens 18 sind umlaufende Führungsbänder 20 eingelegt. Der Spreizkolben 18 ist mittels eines in eine Kolbennut eingelegten O-Rings 22 gegen den Hohlzylinder 12 abgedichtet.In the hollow cylinder 12, an expansion piston 18 is displaceable in the axial direction added. In two flat piston grooves near the two ends of the Expanding pistons 18 have circumferential guide bands 20 inserted. Of the Expansion piston 18 is by means of an O-ring 22 inserted into a piston groove sealed against the hollow cylinder 12.

An seiner dem Anschlagring 16 zugewandten Stirnseite ist eine kreisrunde Spreizscheibe 24 mit dem Spreizkolben 18 verschraubt. Die Spreizscheibe 24 befindet sich innerhalb des Anschlagrings 16, sie weist radiales Spiel zum Anschlagring 16 auf. In ihrer Mitte ist die Spreizscheibe 24 mit einem Loch 26 versehen, das ein Durchstecken eines Schafts 28 eines Spreizankers 30, 32 erlaubt (in Figur 1 sind zwei Spreizankertypen 30, 32 je zur Hälfte dargestellt). Eine auf dem Schaft 28 des Spreizankers 30, 32 verschiebbare Spreizhülse 34 stößt an einem Rand der Bohrung 26 gegen die Spreizscheibe 24. Die Spreizhülse 34 dient zum Aufspreizen ihres einen Endes oder eines separaten Spreizteils 36 über einen Spreizkonus 38, der mit dem Schaft 28 des Spreizankers 30, 32 einstückig ist. On its end face facing the stop ring 16 is a circular one Spreading disc 24 screwed to the expanding piston 18. The spreading disc 24 is located within the stop ring 16, it has radial play Stop ring 16 on. In the middle is the spreading disc 24 with a hole 26 provided that a shaft 28 of an expansion anchor 30, 32 is pushed through allowed (two expansion anchor types 30, 32 are each shown in half in FIG. 1). An expansion sleeve 34 which is displaceable on the shaft 28 of the expansion anchor 30, 32 abuts on one edge of the bore 26 against the expansion disk 24. Die Expansion sleeve 34 is used to spread one end or a separate one Expansion part 36 via an expansion cone 38 which is connected to the shaft 28 of the Expansion anchor 30, 32 is in one piece.

Der Spreizkolben 18 ist mit einer axialen Bohrung 39 versehen, in der ein Spannkolben 40 in axialer Richtung verschiebbar aufgenommen ist. Dieser weist ein umlaufendes Führungsband 42 auf, das in eine flache Kolbennut nahe einem der Spreizplatte 24 zugewandten Stirnseite eingelegt ist und das den Spannkolben 40 im Spreizkolben 18 führt. Mittels eines in eine Kolbennut eingelegten O-Rings 44 sind der Spannkolben 40 und der Spreizkolben 18 gegeneinander abgedichtet.The expansion piston 18 is provided with an axial bore 39 in which a Tensioning piston 40 is slidably received in the axial direction. This points a circumferential guide band 42, which in a flat piston groove near one the expansion plate 24 facing end face is inserted and that Clamping piston 40 in the expansion piston 18 leads. By means of a piston groove inserted O-rings 44 are the tensioning piston 40 and the expansion piston 18 sealed against each other.

An seinem dem Deckel 14 zugewandten Ende ist der Spreizkolben 40 in einem hohlzylindrischen Fortsatz 46 geführt, der mit dem Deckel 14 einstückig ist und um etwas weniger als eine halbe Kolbenlänge in axialer Richtung in den Hohlzylinder 12 ragt. Zur Führung in dem Fortsatz 46 ist ein umlaufendes Führungsband 48 in eine flache Kolbennut nahe einer dem Deckel 14 zugewandten Stirnseite des Spannkolbens 40 eingelegt. Der Spannkolben 40 ist gegen den Fortsatz 46 des Deckels 14 mit einem O-Ring 50 abgedichtet, der in eine Kolbennut eingelegt ist.At its end facing the cover 14, the expansion piston 40 is in one guided hollow cylindrical extension 46 which is integral with the lid 14 and by a little less than half a piston length in the axial direction Hollow cylinder 12 protrudes. For guidance in the extension 46 is a rotating one Guide band 48 into a flat piston groove near the cover 14 facing end of the tensioning piston 40 inserted. The tensioning piston 40 is sealed against the extension 46 of the cover 14 with an O-ring 50 which in a piston groove is inserted.

Um Platz für den hohlzylindrischen Fortsatz 46 des Deckels 14 zu schaffen, ist die Bohrung 39 im Spreizkolben 18 als Stufenbohrung ausgeführt, die sich in Richtung des Deckels 14 erweitert. Der Fortsatz 46 weist zumindest in radialer Richtung Spiel zum Spreizkolben 18 auf.In order to make room for the hollow cylindrical extension 46 of the cover 14, the bore 39 in the expansion piston 18 is designed as a stepped bore, which is in Extended direction of the lid 14. The extension 46 is at least radial Direction play to the expanding piston 18.

Der Spannkolben 40 weist eine axiale Bohrung 51 auf, die sich an einem der Spreizplatte 24 zugewandten Ende zu einem Spannkonus 52 erweitert. In der Bohrung 51 des Spannkolbens 40 ist eine ansich bekannte Spannzange 54 mit einem Konus 56 aufgenommen. Die Spannzange 54 ist mit einer ein Innengewinde tragenden Schraubhülse 58 verschraubt, die am deckelseitigen Ende aus dem Spannkolben 40 vorsteht und in eine Stufenbohrung des Deckels 14 ragt. Mit einer Schraube 60 ist die Schraubhülse 58 mit dem Deckel 14 verschraubt. Die Spannzange 54 ist über die Schraubhülse 58 starr mit dem Deckel 14 verschraubt. Mit zwei O-Ringen 62, 64 ist die Schraubhülse gegen den Spannkolben 40 und den Deckel 14 abgedichtet.The tensioning piston 40 has an axial bore 51 which is located on one of the Expanding plate 24 facing end extended to a clamping cone 52. In the Bore 51 of the clamping piston 40 is a known collet 54 with a cone 56 added. The collet 54 is with a Screw sleeve 58 carrying internal thread screwed on the cover side End protrudes from the tensioning piston 40 and into a stepped bore of the cover 14 protrudes. With a screw 60, the screw sleeve 58 with the cover 14 screwed. The collet 54 is rigid with the screw sleeve 58 Screwed cover 14. With two O-rings 62, 64, the screw sleeve is against the tensioning piston 40 and the cover 14 sealed.

Der Deckel 14 begrenzt einen Spannkolbendruckraum 66 im Innern seines hohlzylindrischen Fortsatzes 46, der vom Spannkolben 40 abgeschlossen wird. The cover 14 delimits a clamping piston pressure chamber 66 inside it hollow cylindrical extension 46, which is completed by the tensioning piston 40.

Durch den Deckel 14 führt eine mit einem Gewinde versehene Bohrung als Druckluftanschluß 68 in den Spannkolbendruckraum 66.Through the cover 14 leads a threaded bore as Compressed air connection 68 in the clamping piston pressure chamber 66.

Eine zweifach abgewinkelte Bohrung im Deckel 14 führt als Fluid- bzw. Druckluftdurchlaß 70 vom Spannkolbendruckraum 66 zu einem Spreizkolbendruckraum 72. Der Spreizkolbendruckraum 72 wird vom Hohlzylinder 12, vom Deckel 14, vom Spreizkolben 18 und vom Umfang des Spannkolbens 40 begrenzt.A twice angled hole in the cover 14 leads as a fluid or Compressed air passage 70 from the clamping piston pressure chamber 66 to one Expansion piston pressure chamber 72. The expansion piston pressure chamber 72 is from Hollow cylinder 12, from the cover 14, from the expansion piston 18 and the circumference of the Clamping piston 40 limited.

Im Druckluftdurchlaß 70 ist ein Überdruckventil 74 mit einem federbelasteten Ventilkolben 76 angebracht. Die Federspannung einer Ventilfeder 78, und damit der Öffnungsdruck des Überdruckventils 74, ist mittels eines Gewindestifts 80 einstellbar. In seiner Grundstellung ist das Überdruckventil 74 geschlossen und sperrt den Druckluftdurchlaß 70 vom Spannkolbendruckraum 66 zum Spreizkolbendruckraum 72.In the compressed air passage 70 is a pressure relief valve 74 with a spring-loaded Valve piston 76 attached. The spring tension of a valve spring 78, and thus the opening pressure of the pressure relief valve 74 is by means of a threaded pin 80 adjustable. In its basic position, the pressure relief valve 74 is closed and blocks the compressed air passage 70 from the clamping piston pressure chamber 66 to Expansion piston pressure chamber 72.

Der Ventilkolben 76 ist mit zwei einander kreuzenden Querbohrungen 82 versehen, die in eine Kolbennut 84 münden. Vom Kreuzungspunkt der Querbohrungen 82 führt eine axiale Sackbohrung 86 axial zu einem mit der Umgebung kommunizierenden Ventilraum 87. Über die Bohrungen 82, 86 im Ventilkolben 76 und den Druckluftdurchlaß 70 kommuniziert der Spreizkolbendruckraum 72 mit der Umgebung, d. h. er ist entlüftet. Die Kolbennut 84 des Ventilkolbens 76 bewirkt, daß die Querbohrungen 82 des Ventilkolbens 76 unabhängig von der Drehstellung des Ventilkolbens 76 mit dem in den Spreizkolbendruckraum 72 führenden Teil des Druckluftdurchlasses 70 kommunizieren.The valve piston 76 has two cross bores 82 crossing each other provided, which open into a piston groove 84. From the crossing point of the Cross bores 82 leads an axial blind bore 86 axially to one with the Valve chamber 87 communicating with the environment. Via the bores 82, 86 in the Valve piston 76 and the compressed air passage 70 communicates the Expansion piston pressure space 72 with the environment, d. H. it is vented. The Piston groove 84 of the valve piston 76 causes the transverse bores 82 of the Valve piston 76 regardless of the rotational position of the valve piston 76 with the part of the compressed air passage 70 leading into the expansion piston pressure space 72 communicate.

Das erfindungsgemäße Setzgerät 10 funktioniert wie folgt: Der Schaft 28 eines Spreizankers 30, 32 wird durch das Loch 26 der Spreizplatte 24 in die Spannzange 54 eingeführt. Der Spannkolbendruckraum 66 wird durch den Druckluftanschluß 68 mit Druckluft beaufschlagt, wodurch sich der Spannkolben 40 in Richtung der Spreizplatte 24 bewegt. Der Spannkonus 52 des Spannkolbens 40 gleitet auf den Konus 56 der Spannzange 54 auf und drückt deren Spannbacken radial zusammen, wodurch der Schaft 28 des Spreizankers 30, 32 gespannt wird. Dabei verschließt der Ventilkolben 76 den Druckluftdurchlaß 70, der Spannzangendruckraum 66 ist hermetisch geschlossen.The setting tool 10 according to the invention functions as follows: the shaft 28 of a Expansion anchor 30, 32 is through the hole 26 of the expansion plate 24 in the Collet 54 introduced. The clamping piston pressure chamber 66 is through the Compressed air connection 68 pressurized with compressed air, causing the tensioning piston 40 moves in the direction of the expansion plate 24. The clamping cone 52 of the Clamping piston 40 slides onto the cone 56 of the collet 54 and presses whose jaws radially together, causing the shaft 28 of the expansion anchor 30, 32 is tensioned. The valve piston 76 closes the Compressed air passage 70, the collet pressure chamber 66 is hermetic closed.

Sobald der Druck im Spannzangendruckraum 66 einen mit dem Gewindestift 80 des Überdruckventils 74 einstellbaren Spanndruck erreicht und überschreitet, gibt der federbelastete Ventilkolben 76 den Druckluftdurchlaß 70 frei, so daß Druckluft vom Spannzangendruckraum 66 in den Spreizkolbendruckraum 72 überströmt. Zugleich sperrt der Ventilkolben 76 seine Querbohrungen 82, so daß der Spreizkolbendruckraum 72 von der Umgebung abgeschlossen ist. Die Druckluft im Spreizkolbendruckraum 72 bewegt den Spreizkolben 40 bis zum Anschlag am Anschlagring 16. Dabei verschiebt der mit dem Spreizkolben 40 verschraubte Spreizring 24 die Spreizhülse 34 in Richtung des Spreizkopfes 38 des Spreizankers 30, 32. Dadurch wird die Spreizhülse 34 selbst bzw. das Spreizteil 36 aufgespreizt und der Spreizanker 30, 32 in einem nicht dargestellten Bohrloch mit einer beispielsweise konischen Hinterschneidung verankert.As soon as the pressure in the collet pressure chamber 66 has a set screw 80 of the pressure relief valve 74 reaches and exceeds the adjustable clamping pressure, the spring-loaded valve piston 76 releases the compressed air passage 70 so that Compressed air from the collet pressure chamber 66 into the expansion piston pressure chamber 72 overflows. At the same time, the valve piston 76 blocks its transverse bores 82, so that the expansion piston pressure space 72 is closed off from the environment. The Compressed air in the expansion piston pressure chamber 72 moves the expansion piston 40 to Stop on the stop ring 16. In doing so, it moves with the expansion piston 40 screwed expansion ring 24, the expansion sleeve 34 in the direction of the expansion head 38 of the expansion anchor 30, 32. As a result, the expansion sleeve 34 itself or Spreading part 36 spread and the expansion anchor 30, 32 in one not illustrated borehole with a conical undercut, for example anchored.

Da der Spreizanker 30, 32 an seinem Schaft 28 in der Spannzange 54 gespannt ist, wird der Spreizanker 30, 32 beim Aufschieben seiner Spreizhülse 34 auf seinen Spreizkopf 38 nicht gegen einen Bohrlochgrund gedrückt. Die beim Aufschieben der Spreizhülse 34 auf den Spreizkonus 38 in Längsrichtung des Spreizankers 30, 32 wirkende Kraft wird von der Spannzange 54 des erfindungsgemäßen Setzgeräts 10 aufgenommen.Since the expansion anchor 30, 32 clamped on its shaft 28 in the collet 54 is, the expansion anchor 30, 32 when sliding its expansion sleeve 34 on his expansion head 38 not pressed against a bottom of the borehole. The at Sliding the expansion sleeve 34 onto the expansion cone 38 in the longitudinal direction of the Expansion anchor 30, 32 acting force is from the collet 54 Setting tool 10 according to the invention added.

Nachdem der Spreizanker 30, 32 gesetzt ist, wird die Druckluft durch den Druckluftanschluß 68 aus dem Spannkolbendruckraum 66 entlassen. Schraubendruckfedern 88, die sich gegen die Spreizplatte 24 abstützen, drücken den Spannkolben 40 in eine Ausgangsstellung zurück. Die Spannzange 54 öffnet sich dabei, so daß das erfindungsgemäße Setzgerät 10 vom Schaft 28 des Spreizankers 30, 32 abgenommen werden kann.After the expansion anchor 30, 32 is set, the compressed air is through the Release the compressed air connection 68 from the clamping piston pressure chamber 66. Press helical compression springs 88, which are supported against the expansion plate 24 the tensioning piston 40 back into a starting position. The collet 54 opens itself, so that the setting tool 10 of the shaft 28 of the Expansion anchor 30, 32 can be removed.

Der Spreizkolbendruckraum 72 wird durch das Überdruckventil 74 entlüftet, sobald dessen Ventilkolben 76 den Druckluftdurchlaß 70 bei nachlassendem Druck im Spannkolbendruckraum 66 verschließt. Schraubendruckfedern 90, die sich gegen den Anschlagring 16 abstützen, drücken den Spannkolben 18 in seine Ausgangsstellung zurück. The expansion piston pressure chamber 72 is vented through the pressure relief valve 74, as soon as its valve piston 76, the compressed air passage 70 as it decreases Pressure in the clamping piston pressure chamber 66 closes. Coil compression springs 90, the are supported against the stop ring 16, push the tensioning piston 18 in his starting position back.

In Figur 2 ist das erfindungsgemäße Setzgerät 10 mit einem in den Druckluftanschluß 68 eingeschraubten Handgriff 92 in Form eines Pistolengriffs dargestellt, der einen Druckluftanschluß 94 aufweist. In den Handgriff 92 ist ein mittels eines Fingerhebels 96 betätigbares Druckluftventil integriert. Bei gelöstem Fingerhebel 96 ist das Setzgerät 10 entlüftet.In Figure 2, the setting tool 10 according to the invention with a Compressed air connection 68 screwed handle 92 in the form of a pistol grip shown, which has a compressed air connection 94. In the handle 92 is a Compressed air valve operable by means of a finger lever 96. When solved The setting device 10 is vented by finger lever 96.

Figur 3 zeigt die Verwendung des erfindungsgemäßen Setzgeräts 10 in einem Setzautomaten 100 zum Setzen und Verankern von Spreizankern in Bohrlöchern. Seitlich neben dem Setzgerät 10 ist ein Magazin 102 in Form eines stehenden Rohres angeordnet, das Spreizanker 32 enthält. Unter einer Mündung des Magazins 102 befindet sich ein Schieber 104, der von einem Pneumatikzylinder 106 betätigbar ist. Eine Sackbohrung 108 im Schieber 104 dient zur Aufnahme eines Spreizankers 32. Die übrigen Spreizanker 32 werden von einer pneumatisch betätigten Vereinzelungseinrichtung 110 im Magazin 102 zurückgehalten.FIG. 3 shows the use of the setting tool 10 according to the invention in one Automatic setting machine 100 for setting and anchoring expansion anchors in Boreholes. To the side of the setting tool 10 is a magazine 102 in the form of a standing tube arranged, the expansion anchor 32 contains. Under an estuary of the magazine 102 there is a slide 104, which is one Pneumatic cylinder 106 is actuated. A blind bore 108 in the slide 104 serves to receive an expansion anchor 32. The remaining expansion anchors 32 are from a pneumatically operated separating device 110 in the magazine 102 held back.

Das Setzgerät 10 ist mittels einer Stangenführung 112 in vertikaler Richtung verschiebbar am Setzautomaten 100 gehalten und mittels eines pneumatischen Hubzylinders 114 zu einer Hubbewegung antreibbar.The setting tool 10 is by means of a rod guide 112 in the vertical direction slidably held on the automatic setting machine 100 and by means of a pneumatic Lift cylinder 114 drivable for a lifting movement.

Mittels des Hubzylinders 114 wird das Setzgerät 10 auf den Spreizanker 32 abgesenkt und dieser durch Druckluftzufuhr am Druckluftanschluß 68 gespannt. Anschließend wird das Setzgerät 10 vom Hubzylinder 114 wieder angehoben, so daß der Spreizanker 32 aus der Sackbohrung 108 des Schiebers 104 herausgelangt. Der Pneumatikzylinder 106 des Schiebers 104 bewegt diesen zur Seite, so daß das Setzgerät 10 frei nach unten verfahren werden kann.The setting tool 10 is placed on the expansion anchor 32 by means of the lifting cylinder 114 lowered and this tensioned by compressed air supply at the compressed air connection 68. The setting tool 10 is then raised again by the lifting cylinder 114, so that the expansion anchor 32 from the blind bore 108 of the slide 104th got out. The pneumatic cylinder 106 of the slide 104 moves it to Side, so that the setting tool 10 can be moved freely down.

Zum Spreizen des Spreizankers 32 wird der Spreizkolbendruckraum 72 durch einen zweiten Druckluftanschluß 116 mit Druckluft beaufschlagt. Der zweite Druckluftanschluß 116 ist anstelle des Überdruckventils 74 in den Druckluftdurchlaß 70 eingeschraubt und verschließt diesen in Richtung des Spannkolbendruckraums 66. Nach dem Setzen des Spreizankers 32 werden beide Druckräume 66, 72 durch die Druckluftanschlüsse 68, 116 entlüftet und das Setzgerät 10 vom Hubzylinder 114 in seine Ausgangsstellung zurück verfahren. For expanding the expansion anchor 32, the expansion piston pressure space 72 is passed through a second compressed air connection 116 is supplied with compressed air. The second Compressed air connection 116 is in place of the pressure relief valve 74 in the Compressed air passage 70 screwed in and closes it in the direction of Clamping piston pressure chamber 66. After the expansion anchor 32 has been set both pressure chambers 66, 72 are vented through the compressed air connections 68, 116 and the setting tool 10 from the lifting cylinder 114 back to its starting position method.

Die Vereinzelungseinrichtung 110 gibt während des Setzens einen Spreizanker 32 aus dem Magazin 102 frei, der in die Sackbohrung 108 des Schiebers 104 fällt und durch Verschieben des Schiebers 104 dem Setzgerät 10 zugeführt wird. Ein höheneinstellbarer Anschlag 118 auf dem Schieber 104 begrenzt die Spanntiefe des Spreizankers im Setzgerät 10 und gibt auf diese Weise den Verschiebeweg der Spreizhülse 34 auf dem Spreizanker 32 vor.The separating device 110 gives an expansion anchor during the setting 32 free from the magazine 102, which in the blind bore 108 of the slide 104th falls and is fed to the setting tool 10 by moving the slide 104. A height-adjustable stop 118 on the slide 104 limits the Tension depth of the expansion anchor in the setting device 10 and in this way gives the Displacement of the expansion sleeve 34 on the expansion anchor 32 in front.

Figur 4 zeigt einen Ausschnitt aus einer Anlage zum Anbringen von Hinterschneidungen aufweisenden Bohrlöchern in Platten, Fliesen oder dgl. und zum Setzen von Spreizankern in die Bohrlöcher. Die Anlage 120 weist zwei ansich bekannte Bohrvorrichtungen 122 auf, die an einer Traverse 124 verfahrbar angebracht sind. Die Traverse 124 ist ihrerseits an einem Maschinengestell 126 der Anlage 120 quer zur Verfahrrichtung der Bohrvorrichtungen 122 verfahrbar. Nicht dargestellte Werkstücke lassen sich auf eine Arbeitsfläche 128 des Maschinengestells 126 unter den Bohrvorrichtungen 122 ablegen. An einem Schlitten 130, an welchem auch die Bohrvorrichtungen 122 angebracht sind, ist der Setzautomat 100 mit dem erfindungsgemäßen Setzgerät 10 seitlich angebracht, so daß nach dem Bohren die Bohrlöcher positionsgenau angefahren und Spreizanker mittels des Setzgeräts 10 in sie gesetzt werden können. Die Anlage 120 wird vorzugsweise vollautomatisch computergesteuert betrieben.Figure 4 shows a section of a system for attaching Undercuts drill holes in plates, tiles or the like. And for placing expansion anchors in the drill holes. The system 120 has two known drilling devices 122, which on a cross member 124 are movably attached. The cross member 124 is in turn on one Machine frame 126 of the system 120 transversely to the direction of travel of the Drilling devices 122 movable. Workpieces not shown can be opened a work surface 128 of the machine frame 126 under the drilling devices Store 122. On a carriage 130, on which also the drilling devices 122 are attached, the setting machine 100 with the invention Setting tool 10 attached to the side, so that after drilling the holes approached in position and expansion anchor into it by means of the setting tool 10 can be placed. The system 120 is preferably fully automatic operated computer controlled.

Claims (7)

  1. Installation apparatus (10) for an expansible anchor (30, 32), the apparatus having a housing (12, 14), a clamping device (40, 54) for clamping the installation apparatus (10) to a shank (28) of the expansible anchor (30, 32), a part (54) of the clamping device (40, 54) fixedly clamping the shank (28) of the expansible anchor (30, 32) being mounted in the housing (12, 14) of the installation apparatus (10) so that it is immovable in the longitudinal direction of a clamped expansible anchor (30, 32), and an expansion device (18, 24) that is movable in relation to the clamping device (40, 54) in the longitudinal direction of a clamped expansible anchor (30, 32) to displace an expansible sleeve (34) located on the shank (28) of the expansible anchor towards an expander head (38) of the expansible anchor (30, 32) in order to expand the expansible anchor (30, 32), characterized in that the housing (12, 14) is pressurizable with an internal pressure, that the clamping device (40, 54) comprises a clamping piston (40) received in the housing (12,14) and pressurizable with the internal pressure of the housing for clamping the shank (28) of the expansible anchor (30, 32) in the clamping device (40, 54), that the expansion device (18, 24) comprises an expansion piston (18) for displacing the expansible sleeve (34) on the shank (28) of the expansible anchor (30, 32), which expansion piston is received in the housing (12, 14) so as to be displaceable in the longitudinal direction of a clamped expansible anchor (30, 32), and that the installation apparatus (10) comprises an excess pressure valve (74) in a fluid duct (70) which leads from a clamping piston pressure chamber (66) to an expansion piston pressure chamber (72), which valve opens the fluid duct (70) when a clamping pressure in the clamping piston pressure chamber (66) is reached, so that the expansion piston (18) is pressurized with the internal pressure of the housing (12,14) and expands the expansible anchor (30, 32).
  2. Installation apparatus according to claim 1, characterized in that the clamping device (40) comprises a collet chuck (54).
  3. Installation apparatus according to claim 2, characterized in that the clamping device (40) comprises a clamping cone (52), which is arranged to be pushed onto a cone of the collet chuck (54) for clamping.
  4. Installation apparatus according to claim 3, characterized in that the clamping piston (40) for displacement of the clamping cone (52) is displaceably guided on a shank of the collet chuck (54).
  5. Installation apparatus according to claim 1, characterized in that the expansion piston (18) has a bore in which the clamping piston (40) is received.
  6. Installation apparatus according to claim 1, characterized in that in its basic setting the excess pressure valve (74) vents the expansion piston pressure chamber (72).
  7. Automatic installation apparatus for installing expansible anchors using an installation apparatus according to claim 1, characterized in that it comprises a lifting device (112, 114) for the installation apparatus (10) and a separating and feeding device (104, 106, 110) for removing an expansible anchor (32) from a magazine (102) and feeding it to the installation apparatus (10).
EP96108549A 1995-07-06 1996-05-29 Setting tool for anchor bolts Expired - Lifetime EP0752296B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19524610A DE19524610A1 (en) 1995-07-06 1995-07-06 Setting tool for an expansion anchor
DE19524610 1995-07-06

Publications (2)

Publication Number Publication Date
EP0752296A1 EP0752296A1 (en) 1997-01-08
EP0752296B1 true EP0752296B1 (en) 1999-04-07

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EP96108549A Expired - Lifetime EP0752296B1 (en) 1995-07-06 1996-05-29 Setting tool for anchor bolts

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US (1) US5743130A (en)
EP (1) EP0752296B1 (en)
JP (1) JP2971398B2 (en)
AT (1) ATE178521T1 (en)
BR (1) BR9602982A (en)
DE (2) DE19524610A1 (en)
ES (1) ES2132807T3 (en)

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JP2018193671A (en) * 2017-05-12 2018-12-06 株式会社テクト Post-installed anchor driving device and method of anchor construction

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Also Published As

Publication number Publication date
ATE178521T1 (en) 1999-04-15
BR9602982A (en) 1998-04-28
US5743130A (en) 1998-04-28
JP2971398B2 (en) 1999-11-02
DE19524610A1 (en) 1997-01-09
EP0752296A1 (en) 1997-01-08
JPH0929662A (en) 1997-02-04
ES2132807T3 (en) 1999-08-16
DE59601584D1 (en) 1999-05-12

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