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1. WO2019056025 - EXPANSION ASSEMBLY

Publication Number WO/2019/056025
Publication Date 21.03.2019
International Application No. PCT/ZA2018/050051
International Filing Date 03.09.2018
Chapter 2 Demand Filed 21.02.2019
IPC
E21D 21/00 2006.01
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
21Anchoring-bolts for roof, floor, or shaft-lining protection
F16B 13/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
13Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
CPC
E21D 21/008
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
21Anchoring-bolts for roof, floor ; in galleries or longwall working; , or shaft-lining protection
008Anchoring or tensioning means
F16B 13/066
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
13Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
04with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
06combined with expanding sleeve
063by the use of an expander
066fastened by extracting a separate expander-part, actuated by the screw, nail or the like
F16B 2013/008
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
13Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
008used for mining purposes
Applicants
  • CAMWORTH TECHNOLOGIES LIMITED (PTY) LTD [GB]/[GB]
Inventors
  • BERGHORST, Adrian
Agents
  • TABERER, Roy Francis
  • TABERER ATTORNEYS
Priority Data
2017/0629018.09.2017ZA
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) EXPANSION ASSEMBLY
(FR) ENSEMBLE D'EXPANSION
Abstract
(EN)
An expansion assembly for a rock bolt (40) which includes: an expansion shell (12) which extends between a distal end and a proximal end, the shell comprising a joining formation (24) and a plurality of expansion leaves (22), each having a plurality of serrations (32); and a tapered plug (14) which is engageable to a rock bolt (40) and which is arranged to force apart the leaves (22); wherein each serration (32) is defined by a conical and an undercut surface; and wherein the plurality of serrations includes a first series of serrations (32A-32G) which starts adjacent the distal end, having an undercut surface with a width in a first range; and a second series of serrations (32I-32M), with each serration of this series having an undercut surface which is progressively wider than the preceding serration of the second series and with a width in a second range.
(FR)
L'invention concerne un ensemble d'expansion pour un boulon d'ancrage (40), comprenant : une coque d'expansion (12) qui s'étend entre une extrémité distale et une extrémité proximale, la coque comprenant une formation d'assemblage (24) et une pluralité de lames d'expansion (22), ayant chacune une pluralité de dentelures (32); et un bouchon conique (14) qui peut venir en prise avec un boulon d'ancrage (40) et qui est agencé pour séparer les lames (22); chaque dentelure (32) est délimitée par une surface conique et une surface en contre-dépouille; et la pluralité de dentelures comprennent une première série de dentelures (32A-32G) qui commencent à proximité de l'extrémité distale, ayant une surface en contre-dépouille ayant une largeur comprise dans une première plage; et une seconde série de dentelures (32I-32M), chaque dentelure de cette série ayant une surface en contre-dépouille qui est progressivement plus large que celle de la dentelure précédente de la seconde série et avec une largeur comprise dans une seconde plage.
Also published as
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