摘要:
A retaining element, for retaining personnel, vehicles, or the like, includes a series of lower recesses opening downward to a supporting undersurface. A collar conforming in shape to the recess is located in each recess. An anchor bolt extends through the collar and protrudes downward from each recess, and set screws retaining the collar. In use, holes are formed along a line on the supporting undersurface at locations corresponding to the protruding anchor bolts, the holes are fitted with a hardening securing agent and the retaining element is moved into place with the anchor bolts extending into the hardening securing agent.
摘要:
A plastic glue plug has an axially extending bore which opens out at the insertion end of the plug. The bore contains a given quantity of glue which is held sealingly enclosed by a plunger partially inserted to a starting position in the bore. When the plug is pressed into an attachment hole, the plunger is forced to a bottom position in the plug while, at the same time, pressing glue beyond the plunger and out of the plug at the insertion end thereof, this glue being forced onto the mutually abutting surfaces of the plug and the attachment hole.
摘要:
A combination for securing an anchor member in a receiving material includes a hardenable reaction resin mortar containing filler material and a sleeve-like dowel member with openings extending through the dowel member wall so that mortar injected into the dowel member can escape laterally outwardly through the openings. The ratio of the diameter of the openings through the dowel member wall to the mean particle diameter with the filler material is in the range of approximately 1.5 to 12.0, and particularly 1.8 to 5.6.
摘要:
Cartridges for securing an anchoring element in an aperture of a structure containing magnesium oxide ammonium phosphate and gelled or microencapsulated water.
摘要:
A method for preventing corrosion of an expandable mounting element which involves introducing a sealing composition into a mounting hole of a support structure first to fill the hole about half-way, then driving an expandable mounting element into the half-filled hole to displace the sealing composition initially against the base of the mounting hole and then up along the surface of the expandable mounting element until the excess emerges out of the mounting hole. A compressible impact device, which has an upper and lower part and a spring part fixed therebetween, is arranged so that an impact tool can be driven against the upper part to fully drive the expandable mounting element into the mounting hole, effecting a sealing compaction in correspondance with the pressure exerted by the spring part. All gaps and cracks are thereby sealed against corrosive media.
摘要:
An anchor rod assembly includes an axially elongated anchor rod to be secured in a borehole by a hardenable mass inserted into the borehole around the anchor rod. The anchor rod is divided by slots into a plurality of circumferentially spaced axially extending segments extending from the leading end of the anchor rod. The anchor rod has an axially extending central bore located radially inwardly of the segments. A filler piece is inserted into the central bore and the slots between the segments. The filler piece closes off the slots between the segments at the outer circumferential surface of the anchor rod. Due to the filler piece, the hardenable mass cannot flow into the slots between the segments and the central bore. As a result, the segments follow movement of the borehole wall during any widening of the borehole because of cracked development, and the anchor rod is retained in the borehole. A radially inwardly formed constriction in the outer circumferential surface of the segments adjacent the trailing end of the anchor rod improves deformability of the segments.
摘要:
An improved insert fastener for use in lightweight panels is described. The fastener has a flat circular head overlapping a hole in the panel. Integral with and depending from the head is a cylindrical body with a pair of radial flanges parallel to each other and to the head. The flanges are spaced apart from each other and the head. The edges of the flanges are serrated. A central threaded bore through the head and cylindrical body receives a bolt for holding auxiliary structures to the panel. Two holes, one on each side of the central bore, are present in the head to allow excess epoxy resin potting material to leave the hole in the lightweight panel.
摘要:
A method and apparatus for anchoring rock bolts and cables in drill holes is disclosed. The method of the invention comprises mixing a dry aggregate-cement mixture with a limited, predetermined amount of water in a water fitting and blowing the wetted cementitious mixture through a delivery tube into a drill hole, in which an anchor cable or rock bolt has been inserted, resulting in the cable or bolt becoming permanently anchored in the drill hole. The use of a wetted dry cementitious mixture eliminates leakage of mixture from the drill hole and obviates the use of a plug, cover or collar plate.The equipement includes a pressurized, dry mix delivery vessel, a source of pressurized air, a water fitting for wetting dry mix with water and a delivery tube for delivery of the wetted dry mix into the drill hole.
摘要:
Method and apparatus for anchoring an internally threaded shank member into a hole in concrete by using a capsule of epoxy. A chisel point on the anchor shank is utilized to break the capsule of epoxy in the hole in the concrete after a structure is attached to the top of the shank in a threaded fashion and rotated downwardly into the hole by an impact wrench or other rotary tool having an adjustably chuck attached thereto. A stop is provided on the structure connecting the power tool to the shank for preventing relative rotation in one direction of the shank with respect to the power tool once the threaded connector is adequately threaded into the shank the shank's internally threaded depression.
摘要:
Before injecting a flowable hardenable mass for anchoring a fastening member in a borehole, a coating solution is sprayed into the borehole for securing any drilling dust remaining on the borehole surface. A device for introducing the hardenable mass into the borehole includes a feed duct for injecting the mass. A container holding a coating solution is provided in the device. Another duct laterally surrounds the feed duct and forms an annular passage and a tube extends from the container to the annular passage for spraying the solution onto the borehole surface.