EP0191140A1 - Hook-bolt - Google Patents

Hook-bolt Download PDF

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Publication number
EP0191140A1
EP0191140A1 EP85113445A EP85113445A EP0191140A1 EP 0191140 A1 EP0191140 A1 EP 0191140A1 EP 85113445 A EP85113445 A EP 85113445A EP 85113445 A EP85113445 A EP 85113445A EP 0191140 A1 EP0191140 A1 EP 0191140A1
Authority
EP
European Patent Office
Prior art keywords
hook
head
hook head
profile
screw
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
EP85113445A
Other languages
German (de)
French (fr)
Other versions
EP0191140B1 (en
Inventor
Peter Dahlhaus
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.)
Hoesch AG
Original Assignee
Hoesch 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 Hoesch AG filed Critical Hoesch AG
Priority to AT85113445T priority Critical patent/ATE34013T1/en
Publication of EP0191140A1 publication Critical patent/EP0191140A1/en
Application granted granted Critical
Publication of EP0191140B1 publication Critical patent/EP0191140B1/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14—Lining predominantly with metal
    • E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
    • E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure

Definitions

  • the invention relates to a hook screw for slidably connecting resilient pit expansion frames made of channel profiles, consisting of screw shank and hook head overlapping the flange of the channel profile with molded stiffening.
  • Such hook-head screws are used to clamp a sliding connection for pit frames made of channel profiles.
  • a large contact surface of the hook head on the flanges of the channel profiles is essential in the design of such hook head screws. This ensures that the hook-head screw will not tip over when the profiles are moved into each other.
  • the known hook-head screws have to absorb high bending moments resulting from the construction and stress in the transition from the hook head to the shaft, so that this area in particular has to be made very strong.
  • DE-OS 30 39 937 it is known to arrange a molded-in stiffening rib in the transition area between the profile-facing and the profile-facing side of the hook head.
  • this hook-head screw essentially serves to connect support straps on which a wide variety of loads can be suspended with the channel profile.
  • These hook-head screws are not easily used for the connection joints of the overlapping, interlocking channel profiles.
  • the hook head screw described here is at risk when the channel profiles are shifted against each other and thus also against the stretch wall in such a way that rock protruding from the wall can easily settle behind the rib. This holds the hook-head screw in place, which prevents proper insertion of the channel profiles during use.
  • the invention has for its object to provide a hook head screw of the type mentioned, which ensures that a displacement on the track wall is not prevented by the stiffening.
  • the stiffening consists of two reinforcing ribs arranged on the side of the hook head facing away from the profile and extending from the center of the hook head at an angle to the edge of the hook head facing away from the profile.
  • the reinforcing ribs extend axially beyond a part of the screw shaft beyond the edge of the hook head.
  • the angle expediently includes at least 45 °.
  • reinforcement ribs can be arranged at the endangered area of hook-head screws for flexible pit expansion by the inventive design, without hindering the displacement of the screws against the track wall.
  • This type of training makes it possible to use less material with the same load, which not only enables more economical production, but also improves handling underground.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
  • Dowels (AREA)

Abstract

1. Hook-bolt for displaceably connecting resilient mine support frames to channel profiles, consisting of a threaded shank (1) and a hook-head (2) with integral reinforcement for overlapping the flange of the channel profile characterised in that the reinforcement consists of two reinforcing ribs (4) arranged on the side (3) of the hook-head (2) away from the profile member, which extend at an angle (6) from the hook-head centre (5) to the rim (7) of the hook-head away from the profile member.

Description

Die Erfindung betrifft eine Hakenschraube zum verschieblichen Verbinden von nachgiebigen Grubenausbaurahmen aus Rinnenprofilen, bestehend aus Schraubenschaft und den Flansch des Rinnenprofils übergreifenden Hakenkopf mit eingeformter Versteifung. Derartige Hakenkopfschrauben werden eingesetzt, um eine verschiebliche Verbindung für Grubenausbaurahmen aus Rinnenprofilen zu verspannen. Wesentlich bei der Ausbildung derartiger Hakenkopfschrauben ist eine breite Auflagefläche des Hakenkopfes auf den Flanschen der Rinnenprofile. Dadurch wird eine große Kippsicherheit der Hakenkopfschraube beim Verschieben der Profile ineinander erzielt. Die bekannten Hakenkopfschrauben müssen im Übergang vom Hakenkopf zum Schaft aus der Konstruktion und Beanspruchung herrührende hohe Biegemomente aufnehmen, so daß gerade dieser Bereich sehr stark ausgebildet werden muß.The invention relates to a hook screw for slidably connecting resilient pit expansion frames made of channel profiles, consisting of screw shank and hook head overlapping the flange of the channel profile with molded stiffening. Such hook-head screws are used to clamp a sliding connection for pit frames made of channel profiles. A large contact surface of the hook head on the flanges of the channel profiles is essential in the design of such hook head screws. This ensures that the hook-head screw will not tip over when the profiles are moved into each other. The known hook-head screws have to absorb high bending moments resulting from the construction and stress in the transition from the hook head to the shaft, so that this area in particular has to be made very strong.

Nach der DE-OS 30 39 937 ist es bekannt, im Übergangsbereich zwischen der profilzugewandten und der profilabgewandten Seite des Hakenkopfes eine eingeformte Versteifungsrippe anzuordnen. Diese Hakenkopfschraube dient jedoch im wesentlichen dazu, Traglaschen, an denen verschiedenste Lasten aufgehängt werden können, mit dem Rinnenprofil zu verbinden. Diese Hakenkopfschrauben sind nicht ohne weiteres für die Verbindungsstöße der sich überlappenden, ineinanderliegenden Rinnenprofile einzusetzen. Die hier beschriebene Hakenkopfschraube ist bei Verschiebung der Rinnenprofile gegeneinander und damit auch gegen die Streckenwand in der Weise gefährdet, als sich aus der Wand herausragendes Gestein leicht hinter die Rippe setzen kann. Dadurch wird die Hakenkopfschraube festgehalten, was ein ordnungsgemäßes Einschieben der Rinnenprofile im Einsatz behindert.According to DE-OS 30 39 937 it is known to arrange a molded-in stiffening rib in the transition area between the profile-facing and the profile-facing side of the hook head. However, this hook-head screw essentially serves to connect support straps on which a wide variety of loads can be suspended with the channel profile. These hook-head screws are not easily used for the connection joints of the overlapping, interlocking channel profiles. The hook head screw described here is at risk when the channel profiles are shifted against each other and thus also against the stretch wall in such a way that rock protruding from the wall can easily settle behind the rib. This holds the hook-head screw in place, which prevents proper insertion of the channel profiles during use.

Von daher liegt der Erfindung die Aufgabe zugrunde, eine Hakenkopfschraube der eingangs genannten Art zu schaffen, die gewährleistet, daß ein Verschieben an der Streckenwand durch die Versteifung nicht verhindert wird.Therefore, the invention has for its object to provide a hook head screw of the type mentioned, which ensures that a displacement on the track wall is not prevented by the stiffening.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Versteifung aus zwei an der profilabgewandten Seite des Hakenkopfes angeordneten Verstärkungsrippen besteht, die sich ausgehend von der Hakenkopfmitte unter einem Winkel zum profilabgewandten Hakenkopfrand erstrecken.This object is achieved in that the stiffening consists of two reinforcing ribs arranged on the side of the hook head facing away from the profile and extending from the center of the hook head at an angle to the edge of the hook head facing away from the profile.

Um eine weitere vorteilhafte Verstärkung des gefährdeten Bereiches zu erzielen, erstrecken sich die Verstärkungsrippen über den Hakenkopfrand hinaus axial über einen Teil des Schraubenschaftes. In zweckmäßiger Weise schließt der Winkel mindestens 45° ein.In order to achieve a further advantageous reinforcement of the endangered area, the reinforcing ribs extend axially beyond a part of the screw shaft beyond the edge of the hook head. The angle expediently includes at least 45 °.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, daß durch die erfindungsgemäße Ausbildung Verstärkungsrippen am gefährdeten Bereich von Hakenkopfschrauben für nachgiebigen Grubenausbau angeordnet werden können, ohne das Verschieben der Schrauben gegen die Streckenwand zu behindern. Durch diese Ausbildungsform wird es möglich, bei gleicher Belastung weniger Material einzusetzen, wodurch nicht nur eine wirtschaftlichere Herstellung ermöglicht, sondern auch die Handhabung unter Tage verbessert wird.The advantages achieved by the invention are, in particular, that reinforcement ribs can be arranged at the endangered area of hook-head screws for flexible pit expansion by the inventive design, without hindering the displacement of the screws against the track wall. This type of training makes it possible to use less material with the same load, which not only enables more economical production, but also improves handling underground.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigen:

  • Fig. 1 eine Hakenkopfschraube in Ansicht,
  • Fig. 2 die Hakenkopfschraube nach Fig. 1 in Draufsicht.
Die in den Fig. 1 und 2 dargestellte Hakenkopfschraube besteht aus Schraubenschaft 1 und Hakenkopf 2. Der Schraubenschaft 1 ist im unteren Bereich mit dem erforderlichen Gewinde 8 versehen. An der profilabgewandten Seite 3 des Hakenkopfes 2 sind Verstärkungsrippen 4 unter einem Winkel 6 von 900 angeordnet, die sich von der Hakenkopfmitte 5 zum Hakenkopfrand 7 erstrecken. Zur weiteren Verstärkung des oberen Bereiches 9 des Schraubenschaftes 1 sind die Verstärkungsrippen 4 über den Hakenkopfrand 7 hinaus in diesen Teil des Schraubenschaftes 1 axial weitergeführt.An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it:
  • 1 is a hook head screw in view,
  • Fig. 2, the hook head screw according to Fig. 1 in plan view.
The hook head screw shown in FIGS. 1 and 2 consists of screw shaft 1 and hook head 2. The screw shaft 1 is provided with the required thread 8 in the lower region. Reinforcing ribs 4 are disposed of 90 0 at the profile side facing away from the hook head 2 3 at an angle 6, which extend from the hook head to the mid-5 hook head edge. 7 To further reinforce the upper region 9 of the screw shaft 1, the reinforcing ribs 4 are axially extended beyond the hook head edge 7 into this part of the screw shaft 1.

  • 1 Schraubenschaft1 screw shaft
  • 2 Hakenkopf2 hook heads
  • 3 profilabgewandte Seite3 side facing away from the profile
  • 4 Verstärkungsrippe4 reinforcement rib
  • 5 Hakenkopfmitte5 center of the hook head
  • 6 Winkel6 angles
  • 7 Hakenkopfrand7 hook head edge
  • 8 Gewinde8 threads
  • 9 oberer Bereich9 upper area

Claims (3)

1. Hakenkopfschraube zum verschieblichen Verbinden von nachgiebigen Grubenausbaurahmen aus Rinnenprofilen, bestehend aus Schraubenschaft und den Flansch des Rinnenprofils übergreifenden Hakenkopf mit eingeformter Versteifung, dadurch gekennzeichnet, daß die Versteifung aus zwei an der profilabgewandten Seite des Hakenkopfes (2) angeordneten Verstärkungsrippen (4) besteht, die sich ausgehend von der Hakenkopfmitte (5) unter einem Winkel (6) zum profilabgewandten Hakenkopfrand (7) erstrecken.1.Hook-head screw for slidably connecting resilient pit extension frames made of channel profiles, consisting of screw shank and hook head with molded-in stiffener that overlaps the flange of the channel profile, characterized in that the stiffener consists of two reinforcing ribs (4) arranged on the side of the hook head (2) facing away from the profile, which extend from the center of the hook head (5) at an angle (6) to the edge of the hook head (7) facing away from the profile. 2. Hakenkopfschrauben nach Anspruch 1, dadurch gekennzeichnet, daß sich die Verstärkungsrippen (4) über den Hakenkopfrand (7) hinaus axial über einen Teil des Schraubenschaftes (1) erstrecken.2. hook head screws according to claim 1, characterized in that the reinforcing ribs (4) over the hook head edge (7) also extend axially over part of the screw shaft (1). 3. Hakenkopfschraube nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß der Winkel (6) mindestens 45° einschließt.3. hook head screw according to claims 1 and 2, characterized in that the angle (6) includes at least 45 °.
EP85113445A 1985-02-08 1985-10-23 Hook-bolt Expired EP0191140B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85113445T ATE34013T1 (en) 1985-02-08 1985-10-23 HOOK HEAD SCREW.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3504319 1985-02-08
DE3504319A DE3504319C1 (en) 1985-02-08 1985-02-08 Hook-head screw for the clamping strap connection of channel profile segments

Publications (2)

Publication Number Publication Date
EP0191140A1 true EP0191140A1 (en) 1986-08-20
EP0191140B1 EP0191140B1 (en) 1988-05-04

Family

ID=6262012

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85113445A Expired EP0191140B1 (en) 1985-02-08 1985-10-23 Hook-bolt

Country Status (3)

Country Link
EP (1) EP0191140B1 (en)
AT (1) ATE34013T1 (en)
DE (2) DE3504319C1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19505118C2 (en) * 1995-02-16 1997-04-17 Krupp Ag Hoesch Krupp Clamping tab tension connection
DE19737225C2 (en) * 1997-08-27 2002-10-10 Mueller & Borggraefe Kg Hook head screw

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1188305A (en) * 1957-12-13 1959-09-22 Guide straitjacket for support frame
FR1256421A (en) * 1960-05-06 1961-03-17 Bochumer Eisen Heintzmann Improvements in connection devices for sliding support frames for mines
DE1167297B (en) * 1962-01-15 1964-04-09 Dipl Berging Kurt Heinz Voss Tensioning device for the flexible route extension

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2142547B1 (en) * 1971-08-25 1972-07-06 Bergbaustah! GmbH & Co, 5800 Hagen Hook-head screw for connecting the overlapping ends of channel-shaped support profiles, in particular for underground route support
DE3039937C2 (en) * 1980-10-23 1985-08-08 Müller & Borggräfe KG, 5820 Gevelsberg Hook-head screw for a support claw that can be braced, in particular with a curved track extension of the underground operation
DE3200595C2 (en) * 1982-01-12 1984-12-06 Müller & Borggräfe KG, 5820 Gevelsberg Hook element for route expansion in mining and tunneling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1188305A (en) * 1957-12-13 1959-09-22 Guide straitjacket for support frame
FR1256421A (en) * 1960-05-06 1961-03-17 Bochumer Eisen Heintzmann Improvements in connection devices for sliding support frames for mines
DE1167297B (en) * 1962-01-15 1964-04-09 Dipl Berging Kurt Heinz Voss Tensioning device for the flexible route extension

Also Published As

Publication number Publication date
DE3562506D1 (en) 1988-06-09
EP0191140B1 (en) 1988-05-04
ATE34013T1 (en) 1988-05-15
DE3504319C1 (en) 1985-09-05

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