ZA201907326B - Groutable friction rock bolt - Google Patents

Groutable friction rock bolt

Info

Publication number
ZA201907326B
ZA201907326B ZA2019/07326A ZA201907326A ZA201907326B ZA 201907326 B ZA201907326 B ZA 201907326B ZA 2019/07326 A ZA2019/07326 A ZA 2019/07326A ZA 201907326 A ZA201907326 A ZA 201907326A ZA 201907326 B ZA201907326 B ZA 201907326B
Authority
ZA
South Africa
Prior art keywords
sleeve
rod
formation
expansion element
projecting portion
Prior art date
Application number
ZA2019/07326A
Inventor
Bruin Pieter De
Rual Abreu
Original Assignee
Epiroc Holdings South Africa Pty Ltd
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 Epiroc Holdings South Africa Pty Ltd filed Critical Epiroc Holdings South Africa Pty Ltd
Publication of ZA201907326B publication Critical patent/ZA201907326B/en

Links

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
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
    • F16B13/063—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander
    • F16B13/065—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting the screw, nail or the like
    • 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
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/08—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation
    • F16B13/0858—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation with an expansible sleeve or dowel body driven against a tapered or spherical expander plug

Abstract

The invention provides a friction bolt assembly which includes: an expansible tubular sleeve longitudinally extending between a leading end and a trailing end, having a longitudinally extending formation, about which the sleeve resiliently deforms; a rod which longitudinally extends through the sleeve between a first end and a second end and which has a projecting portion which extends from the trailing end of the sleeve to the second end; an expansion element mounted on or integrally formed with the rod at or towards the first end; a wedge formation on an inside surface of the sleeve positioned to engage the expansion element; a load applicator engaged with the projecting portion between a load bearing washer and the second end of the rod; and a stop formation engaged with the rod, within the sleeve, in a position which abuts the wedge formation, when an axially directed force is applied to the second end of the rod, to transfer the force to the sleeve to pull the sleeve along with the rod; and which holds the sleeve in position, relatively to the rod, when the load applicator is actuated to draw the expansion element into the sleeve to radially expand the sleeve.
ZA2019/07326A 2018-11-05 2019-11-05 Groutable friction rock bolt ZA201907326B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA201807375 2018-11-05

Publications (1)

Publication Number Publication Date
ZA201907326B true ZA201907326B (en) 2023-09-27

Family

ID=68807383

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA2019/07326A ZA201907326B (en) 2018-11-05 2019-11-05 Groutable friction rock bolt

Country Status (2)

Country Link
WO (1) WO2020097634A1 (en)
ZA (1) ZA201907326B (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19936090A1 (en) * 1999-07-30 2001-02-01 Fischer Artur Werke Gmbh Metal fastener
BR112017027667B1 (en) 2015-07-21 2022-03-29 Ncm Innovations (Pty) Ltd Radially expandable tie rod

Also Published As

Publication number Publication date
WO2020097634A1 (en) 2020-05-14

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