DE1110113B - Rock anchor for the pit construction - Google Patents
Rock anchor for the pit constructionInfo
- Publication number
- DE1110113B DE1110113B DESCH27585A DESC027585A DE1110113B DE 1110113 B DE1110113 B DE 1110113B DE SCH27585 A DESCH27585 A DE SCH27585A DE SC027585 A DESC027585 A DE SC027585A DE 1110113 B DE1110113 B DE 1110113B
- Authority
- DE
- Germany
- Prior art keywords
- anchor
- rock anchor
- wedge
- pit construction
- head
- 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.)
- Pending
Links
- 239000011435 rock Substances 0.000 title claims description 7
- 238000010276 construction Methods 0.000 title description 3
- 238000005065 mining Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/12—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like
- F16B13/126—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like fastened by inserting an unthreaded element, e.g. pin or nail
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Description
Gebirgsanker für den Grubenausbau Die Erfindung bezieht sich auf einen Gebirgsanker für den Grubenausbau, dessen Ankerkopf zur Einführung eines Keilstückes geschlitzt ausgebildet ist.Rock anchor for mining the invention relates to a Rock anchor for pit construction, the anchor head for the introduction of a wedge is formed slotted.
Die im Bergbau bekanntesten Gebirgsankertypen sind der Spreizhülsenanker und der Schlitzkeilanker. Die Spreizhülsenanker haben gegenüber den bisher bekanntgewordenen Schlitzkeilankern den Vorteil, daß sie durch die Besonderheit ihrer Konstruktion beim Verspannen eine größere Berührungsfläche mit den Bohrlochwandungen haben.The most popular rock anchor types in mining are the expansion sleeve anchors and the slot wedge anchor. The expansion sleeve anchors have compared to the previously known Slot wedge anchors have the advantage that they are due to the peculiarity of their construction have a larger contact surface with the borehole walls when bracing.
Demgegenüber ist bei den Schlitzkeilankern in der Regel die Anpreßkraft größer, da das durch Schlagarbeit bewirkte Festkeilen effektiver ist als das Anziehen des Gebirgsankers durch Schrauben. Ein weiterer wichtiger Vorteil des Schlitzkeilankers gegenüber dem Spreizhülsenanker liegt darin, daß er leichter zu fertigen und dadurch auch billiger ist.In contrast, with slot wedge anchors, the contact pressure is usually larger because wedging caused by impact work is more effective than tightening of the rock anchor by screws. Another important advantage of the slot wedge anchor compared to the expansion sleeve anchor is that it is easier to manufacture and thereby also is cheaper.
Da das Haftvermögen mechanischer Gebirgsanker abhängig ist von der Größe der Berührungsfläche zwischen Ankerkopf und innerer Bohrlochwandung sowie von der Kraft, mit der die anliegenden Flächen an die Bohrlochwandungen gedrückt werden, wird gemäß der Erfindung vorgeschlagen, daß der Kopf der Ankerstange nach zwei Richtungen geschlitzt wird, so daß ein Kreuzschlitz gebildet wird. Hierdurch kommt der Ankerkopf beim Setzen vierseitig im Bohrloch zur Anlage, wodurch die Berührungsflächen zwischen Ankerkopf und Bohrloch wesentlich erhöht werden.Since the adhesive strength of mechanical rock anchors depends on the The size of the contact area between the anchor head and the inner borehole wall as well as the force with which the adjacent surfaces are pressed against the borehole walls are, it is proposed according to the invention that the head of the anchor rod after slit in two directions so that a cross slot is formed. Through this When setting, the anchor head comes to rest on four sides in the borehole, creating the contact surfaces between anchor head and borehole can be increased significantly.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigt Fig.1 die Ausbildung eines geschlitzten Ankerkopfes, Fig. Z einen SChnittA-B der Fig. 1, Fig. 3 einen Kreuzkeil, Fig. 4 einen Schnitt C-D der Fig. 3, Fig. 5 eine Ansicht des Kreuzkeiles von x. Nach den Fig.1 und 2 ist der Kopf der Ankerstange 1 mit Längsschlitzen 2 und 3 versehen, wodurch das obere Ende der Ankerstange in vier Segmente 4, 4 a, 4 b, 4 c geteilt wird.An exemplary embodiment of the invention is shown in the drawing. 1 shows the design of a slotted anchor head, FIG. Z shows a section A-B of FIG. 1, FIG. 3 shows a cross wedge, FIG. 4 shows a section CD of FIG. 3, FIG. 5 shows a view of the cross wedge from x. According to Figures 1 and 2, the head of the anchor rod 1 is provided with longitudinal slots 2 and 3, whereby the upper end of the anchor rod is divided into four segments 4, 4 a, 4 b, 4 c.
Die Fig. 3, 4 und 5 veranschaulichen die Ausbildung des Spreizkeiles, der aus schmiedetechnischen Gründen in seinem Grundkörper rund sein soll.3, 4 and 5 illustrate the design of the expanding wedge, which should be round in its main body for forging reasons.
Die Schneiden 6 und 7 laufen in konischer Verbreiterung bis zu der Abschlußplatte B.The cutting edges 6 and 7 run in a conical widening up to the End plate B.
Wird der Anker in das Bohrloch eingeführt, drückt der Spreizkeil, wenn er im Bohrloch Widerstand findet, die Segmente 4, 4 a, 4 b und 4 c gegen die Bohrlochwandungen. Das Festkeilen des Ankers wird dann durch Schläge auf das freie Ende der Ankerstange beendet.When the anchor is inserted into the borehole, the expansion wedge presses, if it finds resistance in the borehole, the segments 4, 4 a, 4 b and 4 c against the Borehole walls. The anchor is then wedged into place by hitting the free End of the anchor rod finished.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESCH27585A DE1110113B (en) | 1960-03-14 | 1960-03-14 | Rock anchor for the pit construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESCH27585A DE1110113B (en) | 1960-03-14 | 1960-03-14 | Rock anchor for the pit construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1110113B true DE1110113B (en) | 1961-07-06 |
Family
ID=7430822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DESCH27585A Pending DE1110113B (en) | 1960-03-14 | 1960-03-14 | Rock anchor for the pit construction |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1110113B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4190991A (en) * | 1977-03-26 | 1980-03-04 | Wilhelm Nelles | Expanding fixture and hammering device therefor |
-
1960
- 1960-03-14 DE DESCH27585A patent/DE1110113B/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4190991A (en) * | 1977-03-26 | 1980-03-04 | Wilhelm Nelles | Expanding fixture and hammering device therefor |
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