[Problem] To provide a cutting grindstone mounting structure which is capable of stably supplying a cooling liquid to a cutting grindstone, and is capable of detachably and properly mounting the cutting grindstone on a drive shaft. [Solution] A cutting grindstone 20 mounting structure, which is capable of supplying a cooling liquid, is provided with: a drive shaft 11 that is composed of a rotation stop shaft part 11a and a male screw-like shaft part 11b; an inner flange 61 that is engaged with the rotation stop shaft part 11a and receives the cutting grindstone 20; a lock nut 62 that is screwed to the male screw-like shaft part and holds and fixes the cutting grindstone; cooling liquid introduction mechanisms 84, 86 that are configured in the drive shaft 11 and/or the lock nut 62 and guide the supplied cooling liquid to the inflow port 35a; and a supply joint part 63 that comprises a connection male screw member 92 which is connected to the cooling liquid introduction mechanisms 84, 86 through a flow passage and a joint body 91 which is connected to a cooling liquid supply source through the flow passage.
B24B 55/02 - Équipement pour refroidir les surfaces abrasives, p. ex. dispositifs d'alimentation en agent de refroidissement
B24B 45/00 - Moyens utilisés pour fixer les meules sur les arbres rotatifs
B24D 5/10 - Meules agglomérées, ou meules comportant des segments abrasifs rapportés, conçues pour travailler uniquement par leur périphérieBagues ou accessoires pour le montage des ces meules munies de moyens de refroidissement, p. ex. de rainures radiales
B28D 1/24 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par découpage, p. ex. exécution d'entailles au moyen de disques de découpage
B28D 7/02 - Accessoires spécialement conçus pour leur utilisation avec les machines ou les dispositifs des autres groupes de la présente sous-classe pour enlever ou faire se déposer la poussière p. ex. par pulvérisation de liquidesAccessoires spécialement conçus pour leur utilisation avec les machines ou les dispositifs des autres groupes de la présente sous-classe pour refroidir les pièces travaillées
2.
Anchor bolt for adhesive anchor, adhesive anchor, and method for constructing adhesive anchor
An anchor bolt for an adhesive anchor or the like that can be caused to exert substantial tensile strength at a relatively shallow embedding depth. An anchor bolt for an adhesive anchor that is fixed via adhesive to an anchor hole formed in a fixed body includes: a head part that is inserted into a hole back part of the anchor hole; a shank part that is continuous with the head part and formed to have a diameter smaller than the diameter of the head part; and a sleeve part into which the shank part is inserted, the sleeve part extending from an opening part to the hole back part of the anchor hole and having a tip end thereof abutted onto the head part.
[Problem] To provide an anchor bolt for an adhesive anchor that can demonstrate a sufficient tensile yield strength at a comparatively shallow embedded depth. [Solution] An anchor bolt 11A for an adhesive anchor that is fixed in an anchor hole AH formed in a fixing body C via an adhesive 12 comprises: a head portion 14 that is inserted to the bottom of the anchor hole AH; a shank portion 15 that is continuous with the head portion 14 and that is formed to have a smaller diameter than the head portion 14; and a sleeve portion 16 into which the shank portion 15 is inserted, that extends from the opening Ha of the anchor hole AH toward the bottom of the hole, and the distal end of which abuts the head portion 14.
The present invention provides a specimen that makes it possible to readily conduct a test relating to the tensile strength of a post-installed anchor when cracking has occurred in a fixing body. The present invention provides a concrete specimen C used in an anchor test device 1 for conducting a tension test for a post-installed anchor, characterized by comprising a pair of block bodies C1, C2 constituting a fixing body, and characterized in that, in an abutment section 11 of the pair of block bodies C1, C2, an anchor hole 12 for embedding an anchor bolt B is formed across the pair of block bodies C1, C2, and pseudo-cracking is brought about.
G01N 1/28 - Préparation d'échantillons pour l'analyse
G01N 3/00 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique
G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
[Problem] To provide a post-construction anchor for which an expanding portion can be reliably expanded in an expanded diameter portion and so as to match the shape of the expanded diameter portion. [Solution] A sleeve impact type post-construction anchor 10 that is anchored in an anchor hole 1 in which an expanded diameter portion 4 is formed at a position at a prescribed depth in a pilot hole 3 comprises: a sleeve unit 11 having an expanding portion 22 on the distal end; an anchor body 12 that is inserted into the sleeve unit 11 and that has male threads 12a formed on at least the distal end; and a cone portion 13 that has a tapered portion 13a to expand the expanding portion 22 and that screws onto the distal end of the anchor body 12 so that the position thereof is adjustable. The cone portion 13 is formed in the axial direction to a length corresponding to the length of the expanded diameter portion 4 and to be longer than the distance from the bottom 3c of the pilot hole 3 to the bottom part 4a of the expanded diameter portion 4.
A diameter expansion drill bit used to expand the diameter of a part of a prepared hole bored in a frame by grinding includes: a cutting-blade portion that has a plurality of separate cutting-blade portions; a cutting-blade holding portion that slidably holds the plurality of separate cutting-blade portions in a radial direction; and a shank portion that supports the cutting-blade holding portion. The plurality of separate cutting-blade portions is arranged in a peripheral direction and arranged over a plurality of stages in a shaft direction, and the plurality of separate cutting-blade portions of the respective stages is caused to slide by a centrifugal force resulting from rotation so as to spread to an outside in the radial direction with respect to the cutting-blade holding portion.
B24B 33/02 - Machines ou dispositifs de finissageAccessoires à cet effet pour travailler intérieurement des surfaces de révolution, p. ex. de forme cylindrique ou conique
B28D 1/14 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par forage ou perçage
B24B 5/06 - Machines ou dispositifs pour meuler des surfaces de révolution des pièces, y compris ceux qui meulent également des surfaces planes adjacentesAccessoires à cet effet possédant des pointes ou des mandrins pour maintenir la pièce pour meuler intérieurement des surfaces cylindriques
B24B 5/40 - Machines ou appareils spécialisés pour une seule opération pour meuler intérieurement des tubes
7.
Method for forming anchor hole and diameter expansion device
To provide a method for forming an anchor hole and a diameter expansion device by which a centrifugal force can be appropriately adjusted when a cutting-blade portion is moved in a radial direction by the centrifugal force to grind a diameter expansion portion. In a method for forming an anchor hole for a post-installed anchor in which a diameter expansion drill bit is inserted and rotated in a prepared-hole portion bored in a concrete fixing body and a cutting-blade portion of the diameter expansion drill bit is moved in a radial direction by a centrifugal force to grind a part of the prepared-hole portion to form a diameter expansion portion, the minimum value of the centrifugal force applied to grind the diameter expansion portion is 0.75 N and preferably 1.1 N.
B28D 1/14 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par forage ou perçage
B24B 23/02 - Machines de meulage portatives, p. ex. à guidage manuelAccessoires à cet effet comportant des outils de meulage rotatifsAccessoires à cet effet
E04B 1/41 - Dispositifs d'assemblage spécialement adaptés pour être noyés dans du béton armé ou de la maçonnerie
[Problem] To provide a diameter expansion drill bit which, in a simple structure, affords a measure of latitude as to the shape of an expanded diameter part formed thereby. [Solution] Provided is a diameter expansion drill bit (10) for diameter expansion by grinding part of a prepared hole H which has been drilled into a building frame A, the drill bit (10) being equipped with: a cutting blade part (21) having a plurality of individual cutting blade parts (22); a cutting blade retaining part (23) for holding the plurality of individual cutting blade parts (22) such that these are capable of respective sliding movement in diametrical directions; and a shank part (12) for supporting the cutting blade retaining part (23), the plurality of individual cutting blade parts (22) being arrayed in plural in the circumferential direction and in multiple tiers in the axial direction, and the plurality of individual cutting blade parts (22) in each tier undergoing sliding movement due to centrifugal force accompanying rotation, to respectively expand towards the outside in diametrical directions with respect to the cutting blade retaining part (23).
B24B 5/06 - Machines ou dispositifs pour meuler des surfaces de révolution des pièces, y compris ceux qui meulent également des surfaces planes adjacentesAccessoires à cet effet possédant des pointes ou des mandrins pour maintenir la pièce pour meuler intérieurement des surfaces cylindriques
B24B 33/02 - Machines ou dispositifs de finissageAccessoires à cet effet pour travailler intérieurement des surfaces de révolution, p. ex. de forme cylindrique ou conique
B28D 1/14 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par forage ou perçage
9.
POST-INSTALLED ANCHOR, POST-INSTALLED ANCHOR CONSTRUCTION METHOD, AND POST-INSTALLED ANCHOR SYSTEM
Provided is a post-installed anchor, the expanding section of which can be reliably and appropriately made to dig into the expanded diameter section of an anchor hole. The present invention is an internal cone driving-type post-installed anchor 10 that is anchored in an anchor hole 1 in which an expanded diameter section 4 is formed at a prescribed depth of a pilot hole section 3. The anchor is provided with: a cylindrical body 11 that is inserted in the anchor hole 1; an expanding section 12 that is connected to the leading end of the cylindrical body 11 and is integrally formed with the cylindrical body 11; a cone section 13 that expands the expanding section 12 from the inside; and a position-regulating section 14 that is provided on the leading end of the expanding section 12 and regulates the distance of the expanding section 12 from the hole bottom 3c of the pilot hole section 3 so that expansion of the expanding section 12 is allowed and the expanding section 12 faces the expanded diameter section 4.
F16B 13/04 - Chevilles ou autres dispositifs fixés à des parois ou autres emplacements par insertion dans des trous préparés à cet effet avec parties s'agrippant dans le trou ou derrière la paroi après insertion
E04B 1/41 - Dispositifs d'assemblage spécialement adaptés pour être noyés dans du béton armé ou de la maçonnerie
F16B 13/10 - Chevilles ou autres dispositifs fixés à des parois ou autres emplacements par insertion dans des trous préparés à cet effet avec parties s'agrippant dans le trou ou derrière la paroi après insertion les parties s'agrippant étant distinctes du dispositif et amenées dans leur position finale par une opération séparée
F16B 35/04 - Boulons filetésBoulons d'ancrageGoujons filetésVisVis de pression avec tête ou axe de forme particulière permettant de fixer le boulon sur ou dans un objet
10.
ANCHOR HOLE FORMATION METHOD AND DIAMETER EXPANDING DEVICE
[Problem] To provide an anchor hole formation method and a diameter expanding device capable of optimizing centrifugal force when grinding an expanded diameter section by moving cutting edge parts in the radial direction using centrifugal force. [Solution] An anchor hole (1) formation method for a post-construction anchor (100), wherein, after inserting a diameter-expanding drill bit (20) into a pilot hole (3) bored in a concrete anchoring body (2), the diameter-expanding drill bit (20) is rotated to move the cutting edge parts (31) of the diameter-expanding drill bit (20) in the radial direction using centrifugal force while grinding a portion of the pilot hole (3) to form an expanded diameter section (4). The minimum centrifugal force applied for grinding the expanded diameter section (4) is 0.75 N, preferably 1.1 N.
B28D 1/14 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par forage ou perçage
B23B 35/00 - Méthodes d'alésage ou de perçage ou autres méthodes de travail impliquant l'utilisation de machines à aléser ou à percerUtilisation d'équipements auxiliaires en relation avec ces méthodes
B23B 39/00 - Machines ou dispositifs d'utilisation générale, pour l'alésage ou le perçageEnsemble machines à aléser ou à percer
B24B 23/02 - Machines de meulage portatives, p. ex. à guidage manuelAccessoires à cet effet comportant des outils de meulage rotatifsAccessoires à cet effet
Provided is a post-installed anchor, etc., which is capable of reliably maintaining high pullout strength and with which anchoring work can be performed stably. A post-installed anchor (10), which is anchored in an anchor hole (100) with an expanded diameter section (103), the anchor being provided with: a main anchor body (11) to be inserted in the anchor hole (100); multiple straight guide opening sections (14) that are formed at positions corresponding to the expanded diameter section (103) so as to penetrate in the radial direction; multiple spreading pieces (12), which are provided so as to slide freely in the respective guide opening sections (14) and are secured in the expanded diameter section (103) when expanded in the radial direction in the anchoring state; and a cone section (13) for sliding the respective spreading pieces (12) radially outward so that the multiple spreading pieces (12) spread apart.
F16B 13/08 - Chevilles ou autres dispositifs fixés à des parois ou autres emplacements par insertion dans des trous préparés à cet effet avec parties s'agrippant dans le trou ou derrière la paroi après insertion les parties s'agrippant étant distinctes du dispositif et amenées dans leur position finale sans opération manuelle ultérieure
E04B 1/41 - Dispositifs d'assemblage spécialement adaptés pour être noyés dans du béton armé ou de la maçonnerie
A diameter expansion drill bit used for inserting in a prepared hole perforated in a framework to expand a diameter of a portion of the prepared hole by grinding has a plurality of blade sections that grind the portion of the prepared hole, a blade holding section that holds the plurality of blade sections movably in a radial direction respectively, and a shank section that supports the blade holding section, and the plurality of blade sections move to spread outwardly in the radial direction with respect to the blade holding section by centrifugal force due to rotation.
B24B 5/48 - Machines ou appareils spécialisés pour une seule opération pour meuler des parois de très petits trous, p. ex. de filières d'étirage
B24B 5/40 - Machines ou appareils spécialisés pour une seule opération pour meuler intérieurement des tubes
B28D 1/14 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par forage ou perçage
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
B24B 33/02 - Machines ou dispositifs de finissageAccessoires à cet effet pour travailler intérieurement des surfaces de révolution, p. ex. de forme cylindrique ou conique
13.
POST-CONSTRUCTION ANCHOR, POST-CONSTRUCTION ANCHORING METHOD, AND POST-CONSTRUCTION ANCHORING SYSTEM
Provided is a post-construction anchor and the like such that pullout strength can be prevented from decreasing over time. A post-construction anchor (10) that is anchored in an anchor hole (1) in which an enlarged diameter section (4) is formed at a prescribed depth in a pilot hole (3) comprises a cylindrical tubular body (11), an expanding section (12) formed integrally on the distal end side of the tubular body (11), and a conical section (13) that causes the expanding section (12) to expand. The expanding section (12) has a main expanding section (21) that corresponds to the enlarged diameter section (4), a proximal end side expanding section (22) that is continuous with the proximal end of the main expanding section (21), a distal end side expanding section (23) that is continuous with the distal end of the main expanding section (21), a proximal end side thin section (24) that is interposed between the main expanding section (21) and the proximal end side expanding section (22), and a distal end side thin section (25) that is interposed between the main expanding section (21) and the distal end side expanding section (23).
E04B 1/41 - Dispositifs d'assemblage spécialement adaptés pour être noyés dans du béton armé ou de la maçonnerie
F16B 13/04 - Chevilles ou autres dispositifs fixés à des parois ou autres emplacements par insertion dans des trous préparés à cet effet avec parties s'agrippant dans le trou ou derrière la paroi après insertion
Provided is a diameter-expanding drill bit with a simple structure and capable of handling even small diameter pilot holes. A diameter-expanding drill bit (10) used by inserting into a pilot hole (H) bored in a building frame (A) to expand the diameter of a portion of the pilot hole (H) by grinding. The drill bit is provided with: multiple cutting edges (21) for grinding a portion of the pilot hole (H); a cutting edge-holding section (22) for holding the multiple cutting edges (21) so that each is movable in the diameter direction; and a shank section (23) for supporting the cutting edge-holding section (22). The multiple cutting edges (21) move so as to expand radially outward with respect to the cutting edge-holding section (22) as a result of the centrifugal force associated with rotation.
B28D 1/14 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par forage ou perçage
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
brevets
