FI91913C - Fastening means for securing a concrete bolt formed by a cast iron bolt to a borehole - Google Patents
Fastening means for securing a concrete bolt formed by a cast iron bolt to a borehole Download PDFInfo
- Publication number
- FI91913C FI91913C FI930414A FI930414A FI91913C FI 91913 C FI91913 C FI 91913C FI 930414 A FI930414 A FI 930414A FI 930414 A FI930414 A FI 930414A FI 91913 C FI91913 C FI 91913C
- Authority
- FI
- Finland
- Prior art keywords
- fastening
- body part
- projections
- bolt
- rock bolt
- Prior art date
Links
- 239000004567 concrete Substances 0.000 title abstract description 22
- 229910001018 Cast iron Inorganic materials 0.000 title 1
- 239000011435 rock Substances 0.000 claims abstract description 55
- 238000005452 bending Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 230000000881 depressing effect Effects 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 238000004873 anchoring Methods 0.000 abstract 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 7
- 238000009434 installation Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Classifications
-
- 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)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Joining Of Building Structures In Genera (AREA)
- Piles And Underground Anchors (AREA)
- Foundations (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
Ο Ί G A ~ZΟ Ί G A ~ Z
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Kiinnityselin betoniraudasta muodostetun kalliopultin kiin-nittamiseksi porareikaanA fastening member for fastening a rock bolt formed of rebar to a borehole
Kiinnityselin kalliopultin kiinnittamiseksi pora-5 reikaan, jossa kiinnityselimessa on kalliopultin ymparille tarkoitettu runko-osa ja runko-osasta sateissuunnassa ul-konevia tartuntaulokkeita, jotka on tarkoitettu kårjeliaan painumaan porareian sisapintaan, runko-osassa sen koko pituudella pituussuuntainen aukko, jolloin runko-osa voi 10 joustaa sita kalliopulttiin asennettaessa, ja runko-osassa sen sisapuolella kiinnitysulokkeita, jotka ulkonevat runko-osasta sen keskelle pain ja on tarkoitettu painumaan kalliopultin ulkopintaa vasten.A fastening member for attaching a rock bolt to a bore-5 hole having a body portion for surrounding the rock bolt and gripping protrusions projecting from the body portion in the rain direction for pressing into the inner surface of the borehole, the body portion being longitudinally open throughout its length. resilient when installed in the rock bolt, and in the body part therein, fastening projections projecting from the body part into its center of pressure and are intended to press against the outer surface of the rock bolt.
Kalliopultteja asennettaessa ne juotetaan porattuun 15 porareikaan joko hartsilla tai betonilla kohteesta riip-puen. Pultin asentamiseksi porareikaan niin, etta se pysyy sielia juotosaineen ja erityisesti kovettumisen aikana kaytetaan erilaisia kiinnitystapoja, joissa pultti lukkiu-tuu porareikaan joko kalliopinnan puoleisesta pååståan tai 20 vastakkaisesta paastaan.When rock bolts are installed, they are soldered to the drilled 15 boreholes with either resin or concrete, depending on the object. In order to install the bolt in the borehole so that it retains the solder, and especially during curing, various fastening methods are used, in which the bolt locks into the borehole either at its end on the rock surface side or at its opposite end.
Erås yleisesti kaytetty kiinnitysratkaisu kasittaa kalliopultin paassa olevan kiilan ja siihen liittyvån pai-suntaosan, jolloin tyOnnettaessa pultti porareikaan kiila tyOntyy paisuntaosan sisaan levittaen sen reian pintaa 35 vasten ja kiilaten siten pultin paikalleen. Tassa ratkai- sussa pulttia voidaan jonkin verran esijannittaa sen toi-seen paahan kiinnitetyn mutterin avulla kallion tukemiseksi jonkin verran betonin kovettumisen aikana. Toinen tunnettu kiinnitystapa on kiilata pultti reian puoleisesta paastaan 30 erillisilia kiiloilla. Tassa tapauksessa pulttia ei voida esijannittaa, vaan kallion tuenta perustuu vain kovettuneen betonin avulla saatuun pultin ja kallion vaiiseen liitok-seen.A commonly used fastening solution encounters a wedge in the rock bolt head and an associated expansion part, whereby when the bolt is inserted into the borehole the wedge protrudes into the expansion part, spreading it against the surface 35 of the hole and thus wedging the bolt into place. In this solution, the bolt can be pre-tensioned somewhat by means of a nut attached to the other end to support the rock somewhat during the hardening of the concrete. Another known fastening method is to wedge the bolt from the hole side side with 30 separate wedges. In this case, the bolt cannot be prestressed, but the rock support is based only on the silent joint of the bolt and the rock obtained by means of the hardened concrete.
DE-julkaisusta 32 04 417 puolestaan on tunnettu 35 ratkaisu, jossa pultti kiinnitetaan porareikaan pultin 2 91913 ympårille asennettujen kiinnitysholkin ja sen reunaan liit-tyvien piikkim&isten ulokeosien muodostavien erillisen kiinnitysosan avulla. TSsså ratkaisussa holkki tyOnnetaan pultin påaile ja ulokeosat on taivutettu niin, ettå ne 5 koskettavat rei&n sisépintaan, kun pultti tybnnetaan pora-reikaan. Koska ulokeosat on suunnattu reian pinnan puolei-seen pååhån, ne lukitsevat pultin niin, etta sita ei hel-posti voi vetaa pois reiasta, jolloin pultti pysyy paikal-laan betonin kovettumisen ajan. T&mSn ratkaisun heikkoutena 10 on, etta kyseisessa ratkaisussa ulokkeet ovat varsin hei-kot, eika pulttia voida esijannittaa ennen betonin kuivu-mista, vaan ulokkeet pelkaståån pitavat pultin itsensa paikallaan. Julkaisun mukainen kiinnityselin ei myoskåan sellaisenaan sovellu kaytettavaksi silloin, kun pultteina 15 kaytetaan betonirautoja, koska niita ei saada kiinnitetyksi kohoumia kasittavien betonirautojen pintaan kiinni.DE 32 32 417, on the other hand, discloses a solution 35 in which a bolt is fastened in a borehole by means of a separate fastening part forming a fastening sleeve mounted around the bolt 2 91913 and spike-like projections connected to its edge. In this solution, the sleeve is pushed onto the top of the bolt and the protruding parts are bent so that they 5 contact the inner surface of the hole when the bolt is inserted into the drill hole. Because the protrusions are directed towards the surface side of the hole, they lock the bolt so that it cannot be easily pulled out of the hole, leaving the bolt in place during the hardening of the concrete. The weakness of the T & mS solution 10 is that in that solution the projections are quite weak, the bolt cannot be pre-tensioned before the concrete has dried, but the projections simply hold the bolt in place. The fastening member according to the publication is also not as such suitable for use when reinforcing bars are used as bolts 15, because they cannot be fastened to the surface of the reinforcing bars.
Taman keksinnOn tarkoituksena on saada aikaan sel-lainen kiinnityselin kalliopultteja vårten, joka soveltuu erilaisten kalliopulttien ja erityisesti betonirautojen 20 kåyton yhteyteen ja joka on helppo asentaa tailaisen kal- liopultin paaile haluttuun paikkaan. Edelleen keksinnon tarkoituksena on saada aikaan sellainen kiinnityselin, jonka avulla pulttia voidaan kohtuullisesti esijånnittåå vålittbmåsti sen asentamisen jålkeen ennenkuin betoni kui-25 vuu. KeksinnOn mukaiselle kiinnityselimelle on ominaista, etta siina on toisiinsa nahden vastakkaisiin suuntiin kal-tevasti muodostettuja kiinnitysulokkeita niin, etta yhdet kiinnitysulokkeet eståvat kiinnityselinta liukumasta kal-liopultin pituussuunnassa vasten tyOntosuuntaa ja vastaa-30 vasti toiset kiinnitysulokkeet estavat kalliopulttia liukumasta kiinnityselimen suhteen vastakkaiseen suuntaan sita esikiristettaessa, ja, etta runko-osan pituussuuntaisen aukon leveys on sellainen, etta kalliopultti voidaan ty5n-taa mainitusta aukosta runko-osan sisapuolelle.The object of the present invention is to provide a fastening member for rock bolts which is suitable for the use of various rock bolts and in particular concrete reinforcements 20 and which is easy to install on a rock bolt in the desired location. It is a further object of the invention to provide a fastening member by means of which the bolt can be reasonably prestressed immediately after its installation before the concrete dries. The fastening member according to the invention is characterized in that it has fastening projections inclined in opposite directions so that one fastening projection prevents the fastening member from sliding in the longitudinal direction of the rock bolt against the working direction and the other fastening projections that the width of the longitudinal opening of the body part is such that a rock bolt can be pushed from said opening into the inside of the body part.
li 91913 3li 91913 3
KeksinnOn olennainen ajatus on, et tå kiinnityselimen kiinnitysosan muodostaa levymainen osa, joka on muodostettu kalliopultin ympårille sopivalla kaarella runko-osaksi niin, etta sen yhdelle sivulle jaa pituussuuntainen aukko, 5 jolloin runko-osa joustaa, kun se asennetaan kalliopultin paaile. KeksinnOn edullisen sovellutusmuodon olennaisena ajatuksena on, etta aukko on leveydeltaan sellainen, etta kalliopultti ja erityisesti kalliopulttina kåytettåvå be-tonirauta voidaan tyOntaa kiinnityselimen sisålle. Edelleen 10 keksinnOn olennaisena ajatuksena on, etta runko-osasta ulkonee tartuntaulokkeita, jotka ovat alussa leveat ja kapenevat runko-osasta kårkeen påin samalla kun ne on tai-vutettu niin, etta karkia ymparOivån ympyran halkaisija on suurempi kuin pulttia vårten porattavan reiån halkaisija.The essential idea of the invention is that this fastening part of the fastening member is formed by a plate-like part formed around the rock bolt as a body part so as to have a longitudinal opening on one side thereof, the body part being flexible when mounted on the rock bolt. The essential idea of the preferred embodiment of the invention is that the opening is of such a width that the rock bolt, and in particular the concrete iron used as the rock bolt, can be pushed inside the fastening member. A further essential idea of the invention is that protruding projections protrude from the body part, which are initially wide and taper from the body part to the tip while being bent so that the diameter of the circle surrounding the carcass is larger than the diameter of the hole drilled by the bolt.
15 Edelleen keksinnOn olennainen ajatus on, etta runko-osassa on sen sisapuolelle suuntautuneita kiinnitysulokkeita, jotka asettuvat kalliopultin pintaa vasten lukiten kiinnityselimen kalliopultin pituussuunnassa. KeksinnOn edullisen sovellutusmuodon olennainen ajatus on, etta tartuntapiikke-20 ja on ainakin kahdessa kohdassa runko-osaa sen pituussuun nassa. Edelleen keksinnOn edullisen sovellutusmuodon olennaisena ajatuksena on, etta runko-osasta sisåanpain olevia kiinnitysulokkeita on vastaavasti ainakin kahdessa runko-osan pituussuunnassa perakkain olevassa kohdassa. Viela 25 keksinnOn edullisen sovellutusmuodon olennaisena ajatuksena on, etta kiinnityselin on muodostettu levysta, johon tar-tuntaulokkeet ja kiinni tysulokkeet on muodostettu joko leikkaamalla tai laviståmaiia levy sopivalla tavalla ja taivuttamalla ne nain kukin omaan suuntaansa.Furthermore, the essential idea of the invention is that the body part has fastening projections directed inside it, which rest against the surface of the rock bolt, locking the fastening member in the longitudinal direction of the rock bolt. The essential idea of the preferred embodiment of the invention is that the gripping spike-20 is at at least two points in the longitudinal direction of the body part. Furthermore, the essential idea of the preferred embodiment of the invention is that the fastening projections inwardly of the body part are located at at least two points in the longitudinal direction of the body part, respectively. The essential idea of the further preferred embodiment of the invention is that the fastening member is formed of a plate in which the gripping projections and the fastening projections are formed either by cutting or flattening the plate in a suitable manner and each bending them in their own direction.
30 KeksinnOn mukaisen ratkaisun etuna on, etta kiinni tyselin on helposti asennettavissa kalliopultin ympårille tyOntåmaiia se kalliopultin paaile sen pååstå tai edulli-sesti sivusta, jolloin kiinnityselin joustavana taipuu edullisessa sovellutusmuodossa kiinnityselimen sivussa 35 oleva aukko laajenee paastamaan kalliopultin kuten be- 4 91913 toniraudan låpi. Edelleen keksinnOn mukaisen kiinnityseli-men etuna on, ettå tartuntaulokkeet voidaan muodostaa halu-tun jåykiksi niin, ettå kalliopulttia voidaan esijånnittåå. Edelleen keksinnOn mukaisen kiinnityselimen etuna on, ettå 5 sen valmistaminen on yksinkertaista ja helppoa ja siten siitå syntyvåt kåyttOkustannukset vastaavasti ovat våhåi-set.An advantage of the solution according to the invention is that the fastening member can be easily mounted around the rock bolt by pushing it on the rock bolt at its end or preferably from the side, whereby the fastening member flexibly bends in the preferred embodiment. A further advantage of the fastening element according to the invention is that the gripping projections can be formed as rigid as desired so that the rock bolt can be prestressed. A further advantage of the fastening member according to the invention is that it is simple and easy to manufacture and thus the operating costs arising therefrom are correspondingly low.
KeksintOå selostetaan låhemmin oheisissa piirustuk-sissa, joissa 10 kuvio 1 esittåå kaavamaisesti keksinnOn mukaista kiinnityselintå kalliopultin pituussuunnassa katsottuna, kuvio 2 esittåå kaavamaisesti ja osittain aukilei-kattuna keksinnOn mukaista kiinnityselintå sivulta katsottuna kalliopulttiin asennettuna ja 15 kuvio 3 esittåå kaavamaisesti keksinnOn mukaisen kiinnityselimen aihiota ennen sen taivuttamista haluttuun muotoon.The invention will be described in more detail in the accompanying drawings, in which Fig. 1 schematically shows a fastening element according to the invention in the longitudinal direction of a rock bolt, Fig. 2 to the desired shape.
Kuviossa 1 on esitetty keksinnOn mukainen kiinni-tyselin, jonka muodostaa runko-osa 1 ja siihen liittyvåt 20 tartuntaulokkeet 2 ja 3, jotka ulkonevat runko-osasta ulos- påin. Edelleen siihen kuuluu kiinnitysulokkeet, jotka suun-tautuvat kaarevan runko-osan 1 sisåpuolelle ja joista kuviossa nåkyvåt ylemmåt kiinnitysulokkeet. Runko-osa 1 on muodostettu kaarevaksi niin, ettå se paikalleen asennettuna 25 osittain ympårOi kalliopulttia kuten kalliopulttina kåytet- tåvåå betonirautaa. Runko-osassa 1 on sen yhdellå puolella on aukko la, jonka leveys on pienempi kuin kalliopultin halkaisija kiinnityselimen asennuskohdalta. Runko-osa 1 on lisåksi sillå tavalla joustava, ettå kalliopultti kuten be-30 tonirauta voidaan tyOntåå aukon la låpi kiinnityselimen runko-osan 1 sisåpuolelle. Tartuntaulokkeet 2 ja 3 ovat runko-osan 1 puoleisesta pååståån suhteellisen leveitå ja kapenevat kårkeen påin, jolloin ne saadaan kårjeståån sopi-vasti joustavaksi, mutta ne såilyvåt kuitenkin varsin lu-35 jina ja jåykkinå ja keståvåt siten suhteellisen suurtakin li 91913 5 kuormitusta kallioreikSån asennettuna. Samoin tartuntaulok-keiden muodon vuoksi pultti kiinnityselimineen voidaan tyOntaa betonilla taytettyyn reikaan sen vuoksi, etta beto-ni paasee hyvin virtaamaan tartuntaulokkeiden vaiiin jåavi-5 en suurehkojen aukkojen vuoksi.Figure 1 shows a fastening member according to the invention formed by a body part 1 and associated gripping projections 2 and 3 projecting outwards from the body part. It further comprises fastening projections extending inside the curved body part 1 and of which the upper fastening projections are shown in the figure. The body part 1 is formed to be curved so that, when installed, it partially surrounds the rock bolt, such as a concrete iron used as a rock bolt. The body part 1 has an opening 1a on one side thereof, the width of which is smaller than the diameter of the rock bolt at the point of installation of the fastening member. In addition, the body part 1 is flexible in such a way that a rock bolt such as be-30 tonal iron can be pushed through the opening 1a into the body part 1 of the fastening member. The gripping projections 2 and 3 are relatively wide at the end of the body part 1 and taper at the apex, making them suitably flexible in order, but they still remain quite strong and rigid and thus withstand relatively large loads. Likewise, due to the shape of the gripping projections, the bolt with its fastening members can be inserted into the hole filled with concrete because my concrete can flow well due to the larger openings left in the gripping projections.
Tartuntaulokkeet 2 ja 3 ovat pituudeltaan edullises-sa sovellutusmuodossa erimittaisia. Tama on tehty sen vuoksi, etta porakruunun kuluessa sen halkaisija pienenee. TailOin vastaavasti muodostuvan reian sisShalkaisija piene-10 nee ja pidemmat tartuntaulokkeet 2 saattavat taipua liian paljon reian seinien suuntaiseksi, jolloin niiden kyky lukita pultti paikalleen heikkenee. Kun lyhyemmat tartuntaulokkeet 3 vastaavasti jaavat suurempaan kulmaan, ne puolestaan hoitavat lukitsemisen ja siten pultin kiinnitys 15 on varmistettu my6s eri tavalla kuluneiden porakruunujen kaytOn yhteydessa.The gripping projections 2 and 3 have different lengths in the preferred embodiment. This is done because its diameter decreases within the drill bit. Accordingly, the inner diameter of the hole formed accordingly decreases and the longer gripping projections 2 may bend too much parallel to the walls of the hole, whereby their ability to lock the bolt in place is impaired. Correspondingly, when the shorter gripping projections 3 divide at a larger angle, they in turn take care of the locking and thus the fastening of the bolt 15 is also ensured in connection with the use of differently worn drill bits.
Kiinnityselimen tartuntaulokkeet 2 ja 3 saavat mybs aikaan sen, etta ne keskittavat pultin yiapaåstaan reikaan, jolloin voidaan taata, etta juotosaineena kaytetty betoni 20 tai hartsi ymparOi pultin joka puolelta. Tama on erityisen tarkeaa sen vuoksi, etta pultti saataisiin edistetyksi pohjavedesta, joka aiheuttaa korroosiota pultissa. Kun betoni tai hartsi ympårGi pulttia koko sen pituudelta joka puolelta, voidaan korroosio estaa ja sen seurauksena pultin 25 heikkeneminen ja mahdollinen katkeaminen ajanoloon. Mikaii pultti halutaan keskittaa luotettavasti ja varmasti koko pituudeltaan, voidaan siihen asettaa useita kiinnityselimia sopivin valein pultin aksiaalisuunnassa.The gripping projections 2 and 3 of the fastening member cause mybs to center the bolt at a distance in the hole, thus ensuring that the concrete 20 or resin used as solder surrounds the bolt on all sides. This is especially important because the bolt is promoted from groundwater, which causes corrosion in the bolt. When concrete or resin surrounds the bolt along its entire length on all sides, corrosion can be prevented and, as a result, the bolt 25 will weaken and possibly break over time. If it is desired to center the bolt reliably and securely along its entire length, several fastening members can be placed on it with suitable castings in the axial direction of the bolt.
Kuviossa 2 on esitetty keksinnbn mukainen kiinni-30 tyselin kalliopultin ymparille asennettuna osittain auki-leikattuna ja sivulta påin katsottuna. Kuviosta nSkyy, kuinka ylempi kiinnitysuloke 4 ja alempi kiinnitysuloke 5 asettuvat kalliopulttina kaytettSvSn betoniraudan pinnalla olevien tartuntaulkonemien 6a vaiiin ja lukitsevat kiinni-35 tyselimen betonirautaan sen pituussuunnassa liikkumatto- 6 91913 maksi. Tartuntaulokkeet 2 ja 3 ovat runko-osasta 1 ulospåin kaltevasti suuntautuvia niin, ettå betonirauta kiinnitys-elimineen voidaan tyttntaa kallioreikaan, jolloin se on ulottuvuudeltaan reian halkaisijaa suurempi, ulokkeet 2 ja 5 3 taipuvat jaaden reian sisapinnan suhteen kaltevaan asen- toon. Kun kalliopultti 6 on tybnnetty perille asti, on se samalla lukkiutunut porareikaan ja ulokkeet 2 ja 3 painavat runko-osaa 1 betonirautaa vasten pitaen kiinnitysulokkeet betoniraudan ulkonemien 6a vaiissa estaen siten be-10 toniraudan lahtemisen irti kiinnityselimesta.Figure 2 shows a partially closed section of a fastener according to the invention mounted around a rock bolt and seen from the side. It can be seen from the figure how the upper fastening protrusion 4 and the lower fastening protrusion 5 settle on the gripping projections 6a on the surface of the concrete iron used as a rock bolt and lock the fastening member 35 to the concrete iron as longitudinally immobile as possible. The gripping projections 2 and 3 are inclined outwards from the body part 1 so that the rebar with its fastening members can be filled into a rock hole, the dimension of which is larger than the diameter of the hole, the projections 2 and 5 3 bending to the inner surface of the hole. When the rock bolt 6 is pushed as far as it will go, it is at the same time locked in the borehole and the projections 2 and 3 press the body part 1 against the rebar, holding the fastening projections in the silence of the rebar projections 6a.
Kuviossa 3 on esitetty keksinnOn mukaisen kiinni-tyselimen edullisen sovellutusmuodon mukainen aihio, joka on muodostettu metallilevysta leikkaamalla. Leikkauksen yhteydessa on kiinnitysulokkeet 4 ja 5 ja tartuntaulokkeet 15 2 ja 3 samalla reunoistaan leikattu niin, ettå ne voidaan taivuttaa ulos levysta. Kiinnityselin muodostetaan tailai-sesta aihiosta taivuttamalla kiinnitysulokkeet 4 ja 5 yh-teen suuntaan ja tartuntaulokkeet 2 ja 3 toiseen suuntaan runko-osan 1 suhteen seka kaantamaiia runko-osa 1 kaarevak-20 si kuvion 1 osoittamalla tavalla.Figure 3 shows a blank according to a preferred embodiment of the fastening member according to the invention, which is formed by cutting a metal plate. In connection with the cutting, the fastening projections 4 and 5 and the gripping projections 15 2 and 3 are at the same time cut at their edges so that they can be bent out of the plate. The fastening member is formed from the Tailai blank by bending the fastening protrusions 4 and 5 in one direction and the gripping projections 2 and 3 in the other direction with respect to the body part 1 as well as the landings of the body part 1 as curved as shown in Fig. 1.
Keksinndn mukainen kiinnityselin on yksinkertainen ja halpa valmistaa ja sita on erittain helppo kayttaa. Kiinnityselimen asentaminen kalliopultin kuten betoniraudan ymparille tapahtuu yksinkertaisesti tydntamålla se kal-25 liopultin poikkisuunnassa, jolloin sopivan paksuisesta teraksesta valmistettuna runko-osa 1 joustaa sallien aukon 1 laajeta kalliopultin ulkomitan suuruiseksi. Samoin sopivan paksuisesta materiaalista valmistettuna tartuntaulokkeet 2 ja 3 seka kiinnitysulokkeet 4 ja 5 lukitsevat kal-30 liopultin kuten betoniraudan niin lujasti reian sisapin-taan, etta pulttia voidaan esikiristaa kallion tukemiseksi ennenkuin juotosaine kuten betoni on ehtinyt kovettua.The fastening member according to the invention is simple and inexpensive to manufacture and is very easy to use. The fastening member is mounted around a rock bolt such as a concrete iron by simply filling it in the transverse direction of the rock bolt, whereby the body part 1 made of suitably thick steel is flexible, allowing the opening 1 to expand to the outer dimension of the rock bolt. Likewise, made of a material of suitable thickness, the gripping projections 2 and 3 and the fastening projections 4 and 5 lock the cal-30 bolt, such as a concrete iron, so tightly to the inner surface of the hole that the bolt can be pre-tightened to support the rock before the solder
Keksintda on edelia selityksessa seka piirustuksissa kuvattu vain esimerkinomaisesti eika sita ole rajattu pel-35 kaståån esitettyyn suoritusmuotoon. Kiinnityselin voidaan 91913 7 valmistaa paitsi esitetylia tavalla levysta leikkaamalla ja sita taivuttamalla myOs valamalla tai muulla sopivalla tavalla, kunhan sen rakenne ja toiminta on olennaisesti samanlainen. Tartuntaulokkeiden lukumaåra voi vaihdella 5 kuvioissa esitetysta kolmesta, kunhan ne ovat riittavan jaykat ja tukevat. Samoin tartuntaulokkeita voi olla vain yhdesså pultin pituussuuntaisessa kohdassa tai niita voi olla useampia kuin kaksi perakkaista uloketta. Runko-osa 1 voidaan taivutta paitsi tasaisesti kaarevaksi myOs lievåsti 10 kulmikkaaksi tai muuten sopivaan muotoon, kunhan se olennaisesti ympårOi kuvissa esitetylia tavalla betonirautaa ja sen kiinnitysulokkeet ulottuvat betoniraudan pinnan ul-konemien 6b valiin. Kiinnityselimiå voidaan edullisesti ja helposti valmistaa teraksesta tai teraslevysta, mutta myos 15 muut riittåvån lujat materiaalit kuten erilaiset metallit ja metalliseokset voi vat tulla kyseeseen. KeksinnOn mukais-ta kiinnityselinta voidaan kSyttaa paitsi esimerkinomaises-ti esitetyn betoniraudan yhteydesså mybs muunlaisten kal-liopulttien kuten pinnaltaan sileiden, pintaa kohoumilla 20 tai syvennyksillS varustettujen kalliopulttien kanssa jne.The invention has been described above in the description and in the drawings only by way of example and is not limited to the embodiment shown in the drawing alone. The fastening member 91913 7 may be manufactured, except as shown, by cutting from the sheet and bending it by myOs casting or other suitable means, as long as its structure and function are substantially similar. The number of gripping projections may vary from the three shown in Figures 5, as long as they are sufficiently rigid and sturdy. Likewise, the gripping projections may be present in only one longitudinal position of the bolt or there may be more than two consecutive projections. The body part 1 can be bent not only to be uniformly curved but also to be slightly angular or otherwise in a suitable shape, as long as it substantially surrounds the reinforced concrete as shown in the figures and its fastening projections extend between the projections 6b of the reinforced concrete surface. The fastening member can be advantageously and easily made of steel or steel plate, but other sufficiently strong materials, such as various metals and alloys, can also be used. The fastening member according to the invention can be used not only in connection with the exemplary rebar shown, but also with other types of rock bolts, such as rock bolts with a smooth surface, surface bumps or recesses, etc.
Kåytettaessa sileåtå kalliopulttia on edullista, etta kiinnitysulokkeet ovat karjestaan teravaksi muotoiltuja niin, etta karjet painautuvat sileaan kalliopultin pintaan ja lukitsevat kiinnityselimen siihen. Ulkonemilla tai syven-25 nyksilla varustettujen kalliopulttien yhteydessa ei tera-vyys ole olennaista, vaan kiinnitysulokkeet voivat olla tylppia tai jopa karjestaan kaarevaksi muotoiltuja. Kal-liopultti voidaan asentaa kiinnityselimeen kiinnitysulok-keiden ollessa sopivasti muotoiltuja sen paasta ja samoin 30 kiinnityselinta voidaan sen pituussuuntaisen raon vuoksi vaantaa Sisahalkaisijaltaan laajemmaksi silloin, kun kal-liopultti tyttnnetaan paasta sen sisaan. Edullisesssa sovel-lutusmuodossa kiinnityselimen pituussuuntainen aukko on kuitenkin niin levea, etta kalliopultti joltakin kohdaltaan 35 voidaan tydntaa kiinnityselimen sivusta sisaan, jolloin 8 91913 kiinnityselimien asentaminen pitkin kalliopultin pituutta on yksinkertaisempaa ja helpompaa.When using a smooth rock bolt, it is advantageous for the fastening projections to be sharply shaped from their ridges so that the ridges press against the smooth surface of the rock bolt and lock the fastening member therein. In the case of rock bolts with protrusions or recesses, the sharpness is not essential, but the fastening projections can be blunt or even curved. The Kal bolt can be mounted on the fastening member with the fastening projections suitably shaped from its nose, and likewise the fastening member 30 due to its longitudinal slot can be grooved to a wider inside diameter when the Kal bolt is filled with nail inside it. However, in the preferred embodiment, the longitudinal opening of the fastening member is so wide that the rock bolt at some point 35 can be filled in from the side of the fastening member, whereby the installation of the fastening members along the length of the rock bolt is simpler and easier.
Claims (8)
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI930414A FI91913C (en) | 1993-01-29 | 1993-01-29 | Fastening means for securing a concrete bolt formed by a cast iron bolt to a borehole |
| ZA94153A ZA94153B (en) | 1993-01-29 | 1994-01-11 | Means for anchoring a rock bolt made of concrete steel in a drill hole |
| AT94904195T ATE163318T1 (en) | 1993-01-29 | 1994-01-12 | MEANS FOR ANCHORING ROCK ANCHORS MADE OF REINFORCED CONCRETE IN A BORED HOLE. |
| PL94309944A PL172767B1 (en) | 1993-01-29 | 1994-01-12 | Anchoring means for securing a foundation bolt made of reinforcement bar in its associated drilled hole |
| CA002154901A CA2154901C (en) | 1993-01-29 | 1994-01-12 | Means for anchoring a rock bolt made of concrete steel in a drill hole |
| PCT/FI1994/000014 WO1994017283A1 (en) | 1993-01-29 | 1994-01-12 | Means for anchoring a rock bolt made of concrete steel in a drill hole |
| JP51639694A JP3230160B2 (en) | 1993-01-29 | 1994-01-12 | Means for locking concrete steel roof bolts in boreholes |
| DE69408570T DE69408570T2 (en) | 1993-01-29 | 1994-01-12 | MEDIUM FOR ANCHORING ROCK ANCHORS, MADE OF REINFORCED CONCRETE, IN A HOLE. |
| AU58349/94A AU675282B2 (en) | 1993-01-29 | 1994-01-12 | Means for anchoring a rock bolt made of concrete steel in a drill hole |
| EP94904195A EP0680545B1 (en) | 1993-01-29 | 1994-01-12 | Means for anchoring a rock bolt made of concrete steel in a drill hole |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI930414A FI91913C (en) | 1993-01-29 | 1993-01-29 | Fastening means for securing a concrete bolt formed by a cast iron bolt to a borehole |
| FI930414 | 1993-01-29 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI930414A0 FI930414A0 (en) | 1993-01-29 |
| FI91913B FI91913B (en) | 1994-05-13 |
| FI91913C true FI91913C (en) | 1994-08-25 |
Family
ID=8537065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI930414A FI91913C (en) | 1993-01-29 | 1993-01-29 | Fastening means for securing a concrete bolt formed by a cast iron bolt to a borehole |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0680545B1 (en) |
| JP (1) | JP3230160B2 (en) |
| AT (1) | ATE163318T1 (en) |
| AU (1) | AU675282B2 (en) |
| CA (1) | CA2154901C (en) |
| DE (1) | DE69408570T2 (en) |
| FI (1) | FI91913C (en) |
| PL (1) | PL172767B1 (en) |
| WO (1) | WO1994017283A1 (en) |
| ZA (1) | ZA94153B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7325185B1 (en) | 2003-08-04 | 2008-01-29 | Symantec Corporation | Host-based detection and prevention of malicious code propagation |
| US20050069388A1 (en) * | 2003-09-30 | 2005-03-31 | Valgora George G. | Friction stabilizer with tabs |
| KR100602906B1 (en) * | 2004-08-06 | 2006-07-19 | 김흥만 | Lock bolt fastener |
| RU2484251C1 (en) * | 2011-12-30 | 2013-06-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный университет" | Anchor support for mine workings |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE544161A (en) * | 1955-03-24 | |||
| SE451615B (en) * | 1983-09-27 | 1987-10-19 | Lundkvist Alfred | Socket unit for casting short bolts in holes |
-
1993
- 1993-01-29 FI FI930414A patent/FI91913C/en active
-
1994
- 1994-01-11 ZA ZA94153A patent/ZA94153B/en unknown
- 1994-01-12 DE DE69408570T patent/DE69408570T2/en not_active Expired - Fee Related
- 1994-01-12 PL PL94309944A patent/PL172767B1/en not_active IP Right Cessation
- 1994-01-12 EP EP94904195A patent/EP0680545B1/en not_active Expired - Lifetime
- 1994-01-12 WO PCT/FI1994/000014 patent/WO1994017283A1/en active IP Right Grant
- 1994-01-12 AU AU58349/94A patent/AU675282B2/en not_active Ceased
- 1994-01-12 AT AT94904195T patent/ATE163318T1/en not_active IP Right Cessation
- 1994-01-12 CA CA002154901A patent/CA2154901C/en not_active Expired - Fee Related
- 1994-01-12 JP JP51639694A patent/JP3230160B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ATE163318T1 (en) | 1998-03-15 |
| AU5834994A (en) | 1994-08-15 |
| WO1994017283A1 (en) | 1994-08-04 |
| CA2154901C (en) | 2005-05-31 |
| DE69408570T2 (en) | 1998-09-10 |
| CA2154901A1 (en) | 1994-08-04 |
| PL172767B1 (en) | 1997-11-28 |
| FI930414A0 (en) | 1993-01-29 |
| ZA94153B (en) | 1994-08-18 |
| JPH08508797A (en) | 1996-09-17 |
| PL309944A1 (en) | 1995-11-13 |
| EP0680545A1 (en) | 1995-11-08 |
| JP3230160B2 (en) | 2001-11-19 |
| DE69408570D1 (en) | 1998-03-26 |
| EP0680545B1 (en) | 1998-02-18 |
| FI91913B (en) | 1994-05-13 |
| AU675282B2 (en) | 1997-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BB | Publication of examined application |