EP0273122B1 - Stahlgelenkkappe für den Untertageausbau - Google Patents

Stahlgelenkkappe für den Untertageausbau Download PDF

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Publication number
EP0273122B1
EP0273122B1 EP87115117A EP87115117A EP0273122B1 EP 0273122 B1 EP0273122 B1 EP 0273122B1 EP 87115117 A EP87115117 A EP 87115117A EP 87115117 A EP87115117 A EP 87115117A EP 0273122 B1 EP0273122 B1 EP 0273122B1
Authority
EP
European Patent Office
Prior art keywords
hollow profile
fork
insert
tip
profile
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
EP87115117A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0273122A1 (de
Inventor
Martha-Catharina Heiliger
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.)
HEILIGER MARTHA C
Original Assignee
HEILIGER MARTHA C
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 HEILIGER MARTHA C filed Critical HEILIGER MARTHA C
Priority to AT87115117T priority Critical patent/ATE71183T1/de
Publication of EP0273122A1 publication Critical patent/EP0273122A1/de
Application granted granted Critical
Publication of EP0273122B1 publication Critical patent/EP0273122B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21D17/00—Caps for supporting mine roofs
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7047—Radially interposed shim or bushing
    • Y10T403/7051—Wedging or camming
    • Y10T403/7052—Engaged by axial movement
    • Y10T403/7056—Threaded actuator

Definitions

  • the invention relates to a steel joint cap for underground development, consisting of a hollow profile of a certain length, at one end of a so-called. Tip and at the other end a so-called. Fork is arranged as an insert and the connection of insert and hollow profile is designed as a plug connection.
  • Such a steel joint cap has already become known through the German utility model No. 83 05 874.
  • Such a cap is inexpensive to manufacture, very easy to maintain and repair and can be easily assembled on site.
  • relatively high demands are placed on the respective manufacturing processes and the respective tip or fork is nevertheless not to be used with no play, so that on the one hand so-called. Fretting corrosion can occur and, on the other hand, undesirable edge pressure can occur.
  • the invention is therefore based on the object of further developing such a steel joint flap so that the inserts can be given a play-free, secure hold in the correct position without the advantages described being lost.
  • the tip and fork have at their hollow profile-side end a profile insert corresponding in cross section to the cross section of the hollow profile with at least one longitudinally inclined surface, each of which is assigned a movable wedge piece which can be drawn into the hollow profile between the longitudinally inclined surface and the hollow profile inner surface.
  • at least one tie rod arranged in the tip or fork and extending in the longitudinal direction is provided, which is designed to be operable from the outside.
  • such surfaces both have the same inclination, so that the use of such surfaces together with the associated wedges causes centering of the respective insert.
  • the connection is therefore very secure and at the same time easily detachable.
  • the assembly advantages are retained. The ease of repair and maintenance already known from the described prior art is also retained.
  • the connection is no longer sensitive to fretting corrosion. The undesirable edge pressure and the associated incorrect position of the respective insert is also avoided.
  • At least one tie rod is arranged in the longitudinal direction, which engages behind each movable wedge piece with a rear grip, the tie rod being designed to be actuated from the outside. This is a very simple and externally accessible way of driving in or loosening the wedges with the required force.
  • a supplementary embodiment of the invention provides that the tie rod is designed as a threaded bolt, the bolt head of which is accessible from the outside and the threaded part of which has a nut as a rear grip which is guided in the hollow profile in a manner that prevents it from rotating.
  • the threaded bolt is easy to operate using its freely accessible bolt head.
  • the thread together with the nut acting as a rear grip results in a very large power transmission, so that the wedges can be retracted with very great force if necessary. Since there is a short circuit of forces between the wedge and the insert via the tie rod, there is no need to fear an undesired displacement of the wedge due to the clamping process due to clamping or clamping forces occurring.
  • the nut has an outer cross-sectional shape which is matched to the inner cross-section of the hollow profile. This is preferably a rectangular shape or an approximate rectangular shape or square shape. If the outer Cross-sectional shape of the nut with play corresponds to the inner cross-section of the hollow profile, it can not twist on the one hand and is still able to carry out the necessary axial movement unhindered.
  • each wedge piece is connected to the rear handle in a radially movable but axially substantially immovable manner.
  • This has the advantage that the wedges can be driven back out of their clamped position from the outside in a simple manner, for example, as a threaded bolt, to release the connection between the hollow profile and the insert.
  • the threaded bolt is pressed in or driven in and takes the nut with it, which in turn takes the wedges axially and thus releases the connection.
  • the invention also provides that the insert designed as a fork is longitudinally divided centrally in a plane parallel to the fork surfaces.
  • a longitudinal division of the fork is possible without losing the fastening security of the fork. This results in a more cost-effective production of such a fork and, at the same time, a more cost-effective repair option because, in the event of damage, usually only one half of the fork is damaged, while the other half remains usable. It is therefore possible to replace only half of the fork in the event of damage. In this way, inventory can also be reduced considerably and only a lighter weight has to be transported for repair measures.
  • the inclined surfaces of the profile inserts which deliver the main force to the associated wedge and thus transfer it to the hollow profile, should be covered as far as possible in the full width and in the largest possible area by the wedges to be drawn in, in order to achieve the lowest possible surface pressure during the power transmission.
  • the angle of inclination of the inclined surfaces is in the range of 2-10 °. This results in a very firm connection with relatively small pull-in forces.
  • Figure 1 shows a steel joint cap 1 in side view
  • the hollow profile 2 is made as a one-piece box profile.
  • a tip 3 on the one hand and a fork 4 on the other hand are provided at the respective ends of this hollow profile 2, these two parts being inserted into the hollow profile 2 with a profile insert 5 or 6.
  • the line of action of the main load direction lies in the drawing plane or parallel to it.
  • the profile insert 5 of the tip 3 has two surfaces 7 and 8 which are inclined in the longitudinal direction and converge towards the interior of the hollow profile 2. They each have the angle of inclination alpha.
  • webs or side surfaces running parallel to the plane of the drawing can be provided on the profile insert 5, which are spaced from one another such that they fit laterally into the corresponding cavity of the hollow profile 2 with as little play as possible.
  • Such a surface arrangement is already known from the described prior art.
  • these webs need not necessarily be present, but can be advantageous.
  • these webs are correspondingly inclined, e.g. the longitudinally inclined surfaces 7 and 8.
  • At their front side at least the longitudinally inclined surfaces 7 and 8 can be mutually supported on a web 23 which has an opening 24.
  • the webs forming the longitudinally inclined surfaces 7 and 8 are sufficiently supported against one another; the side webs, which are not described in any more detail, can make a considerable contribution to the rigidity of the overall system.
  • the profile insert 6 of the fork 4 is designed very similarly.
  • These longitudinally inclined surfaces 9 and 10 also have the angle of inclination alpha and run convergingly pointing into the interior of the hollow profile 2.
  • the profile insert 6 shows a variant as an exemplary embodiment. It is there that the longitudinally inclined surfaces 9 and 10 are supported exclusively by the webs 25 and 26, so that a natural opening 27 remains at the end.
  • the corresponding cross-sectional shapes of the hollow profile 2 and of the inserts 3 and 4 are shown in the illustrations 4 to 6, with FIG. 5 looking at the one used Tip 3 allows, while Figure 4 shows a view of the tip 3 immediately before use in the hollow profile 2.
  • a corresponding view of the fork 4 is shown in FIG. 6.
  • the insert 3 is first used, for example, as a tie rod of the threaded bolts 17 in the longitudinal direction.
  • the threaded bolt 17 is passed through the opening 28 and through the opening 24 until the bolt head 19 abuts.
  • the nut 18 is now screwed onto the unspecified threaded part of the threaded bolt 17 and left in a rotational position which enables the nut 18 to be inserted into the hollow profile 2.
  • the cross section of the nut 18 corresponds with sufficient play to the inner cross section of the hollow profile 2, so that the nut 18 inserted into the hollow profile 2 can no longer twist.
  • Two movable wedge pieces 11 and 12 are now placed with their inclined surfaces on the correspondingly inclined surfaces 7 and 8 of the profile insert 5 and are then axially supported against the nut 18. They are connected in any way to the nut 18 so that they can move at least slightly radially. Axial movement of the nut 18 in both directions should, however, take the movable sections 11 and 12 with it, so that tensioning and loosening of the wedge pieces 11 and 12 is possible.
  • the sequence of the construction is, however without insert, 3 drawn in FIG. 3 as an exploded view.
  • the insert 3 with its profile insert 5 can be pushed axially into the hollow profile 2 until the end face 29 of the insert 3 bears against the corresponding end face of the hollow profile 2. If this state is reached, the threaded bolt 17 acting as a tie rod is rotated via the bolt head 19. Since the nut 18 cannot twist in the hollow profile 2, it moves in the axial direction towards the bolt head 19 and thus pushes the movable sections 11 and 12 in front of it, so that the wedge gap between the inclined surfaces 7 and 8 of the profile insert 5 on the one hand and the corresponding inner surface of the hollow profile 2 is completely filled on the other hand. The movable sections 11 and 12 can in this case with very great force in the wedge gap be drawn in.
  • the width of the movable wedge pieces 11 and 12 is preferably dimensioned such that they cover the respectively assigned total width of the longitudinally inclined surfaces 7 and 8, in order to achieve the lowest possible surface pressure despite high clamping forces.
  • the movable wedge pieces 13 and 14 in their arrangement and relation to the longitudinally inclined surfaces 9 and 10 of the profile insert 6. There the wedge pieces mentioned are assembled, used and used in the same way as already described for the profile insert 5.
  • the described inventive method of fastening the inserts 3 and 4 in the hollow profile 2 to form a steel joint cap 1 also makes it possible to divide the fork 4 in the plane 21 parallel to the fork surfaces 22.
  • the division level 21 is indicated in Figure 4 and Figure 7.
  • the division of the fork 4 has on the one hand the advantage that the corresponding individual forgings are easier and therefore less expensive to manufacture, so that the fork 4 composed of the two halves of the part is cheaper than those forks which are manufactured by conventional methods and it is such a divided one Fork 4 easier to repair, because in the event of damage, usually only half of such a fork 4 is damaged. If the fork 4 is now in one piece, the entire fork will fail and must be replaced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Heat Treatment Of Steel (AREA)
  • Bridges Or Land Bridges (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Display Devices Of Pinball Game Machines (AREA)
  • Earth Drilling (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Supports For Pipes And Cables (AREA)
  • Tents Or Canopies (AREA)
  • Clamps And Clips (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Fuses (AREA)
  • Dowels (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Endoscopes (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Fishing Rods (AREA)
  • Finger-Pressure Massage (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
EP87115117A 1986-12-01 1987-10-16 Stahlgelenkkappe für den Untertageausbau Expired - Lifetime EP0273122B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87115117T ATE71183T1 (de) 1986-12-01 1987-10-16 Stahlgelenkkappe fuer den untertageausbau.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8632139U DE8632139U1 (de) 1986-12-01 1986-12-01 Stahlgelenkkappe für den Untertageausbau
DE8632139U 1986-12-01

Publications (2)

Publication Number Publication Date
EP0273122A1 EP0273122A1 (de) 1988-07-06
EP0273122B1 true EP0273122B1 (de) 1992-01-02

Family

ID=6800705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115117A Expired - Lifetime EP0273122B1 (de) 1986-12-01 1987-10-16 Stahlgelenkkappe für den Untertageausbau

Country Status (28)

Country Link
US (1) US4820085A (uk)
EP (1) EP0273122B1 (uk)
JP (1) JPS63194099A (uk)
CN (1) CN1013136B (uk)
AT (1) ATE71183T1 (uk)
AU (1) AU583994B2 (uk)
BG (1) BG49277A3 (uk)
BR (1) BR8706388A (uk)
CA (1) CA1326961C (uk)
CS (1) CS268843B2 (uk)
DE (2) DE8632139U1 (uk)
ES (1) ES2027675T3 (uk)
FI (1) FI87600C (uk)
GR (1) GR3003490T3 (uk)
HU (1) HU198981B (uk)
IN (1) IN168499B (uk)
MA (1) MA21121A1 (uk)
NO (1) NO874981L (uk)
NZ (1) NZ222715A (uk)
PL (1) PL156515B1 (uk)
PT (2) PT86240A (uk)
RO (1) RO110167B1 (uk)
SU (1) SU1611224A3 (uk)
TN (1) TNSN87134A1 (uk)
TR (1) TR23723A (uk)
UA (1) UA7136A1 (uk)
YU (1) YU211987A (uk)
ZA (1) ZA878972B (uk)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE508922A (uk) *
US2056248A (en) * 1933-09-08 1936-10-06 Thomas & Betts Corp Wire conecter
DE829288C (de) * 1948-10-02 1952-01-24 Elke Lorenz Schaleisenverbindung
DE846040C (de) * 1949-12-28 1952-08-07 Ake Torgny Bergqvist Verriegelungsvorrichtung fuer Rohre von teleskopartigen Konstruktionen
FR1015257A (fr) * 1950-03-28 1952-09-15 Sambre & Meuse Usines Rallonge de mine
US2784015A (en) * 1953-04-24 1957-03-05 Carl G Swanson Pole base
DE1140890B (de) * 1960-06-11 1962-12-13 Karl Maria Groetschel Dipl Ing Vorpfaendkappe, insbesondere Vorpfaendwendekappe
DE1750583A1 (de) * 1968-05-16 1971-02-25 Permali Ltd Verankerungen,Zugstangen und Fassungen
DE1932115A1 (de) * 1969-06-25 1971-01-07 Schwarz & Schling Eckverbinder fuer Profilrohr
GB1369236A (en) * 1972-05-23 1974-10-02 British Iron Steel Research Space frames
FR2302411A1 (fr) * 1975-02-27 1976-09-24 Lorraine Houilleres Chapeau telescopique de soutenement
DE8305874U1 (de) * 1983-03-02 1983-10-20 Heiliger, Martha-Catharina, 5166 Kreuzau Stahlgelenkkappe fuer untertageausbau

Also Published As

Publication number Publication date
CN1013136B (zh) 1991-07-10
NO874981D0 (no) 1987-11-30
ATE71183T1 (de) 1992-01-15
YU211987A (en) 1991-02-28
CS268843B2 (en) 1990-04-11
AU583994B2 (en) 1989-05-11
US4820085A (en) 1989-04-11
BG49277A3 (en) 1991-09-16
TNSN87134A1 (fr) 1990-01-01
JPH05520B2 (uk) 1993-01-06
CN87108117A (zh) 1988-06-29
SU1611224A3 (ru) 1990-11-30
FI87600C (fi) 1993-01-25
NO874981L (no) 1988-06-02
PL268995A1 (en) 1988-09-01
GR3003490T3 (en) 1993-02-17
BR8706388A (pt) 1988-07-19
PT8773T (pt) 1994-02-28
MA21121A1 (fr) 1988-07-01
FI875267A (fi) 1988-06-02
CS860887A2 (en) 1989-08-14
HUT46782A (en) 1988-11-28
ZA878972B (en) 1988-08-31
DE3775736D1 (de) 1992-02-13
JPS63194099A (ja) 1988-08-11
HU198981B (en) 1989-12-28
PT86240A (pt) 1989-01-17
PL156515B1 (pl) 1992-03-31
EP0273122A1 (de) 1988-07-06
FI87600B (fi) 1992-10-15
AU8194787A (en) 1988-06-09
RO110167B1 (ro) 1995-10-30
ES2027675T3 (es) 1992-06-16
FI875267A0 (fi) 1987-11-30
NZ222715A (en) 1990-04-26
TR23723A (tr) 1990-07-18
DE8632139U1 (de) 1987-02-26
UA7136A1 (uk) 1995-06-30
CA1326961C (en) 1994-02-15
IN168499B (uk) 1991-04-13

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