A slotted detachable reaming anchor bolt

Abstract

The invention relates to a detachable clamping groove type undercut anchor. The undercut anchor comprises a conical screw 1, lock key blades 2, clamp springs 3, a casing 4, a flat washer 5, a spring washer 6 and a nut 7, wherein the conical screw is provided with a conical head at one end and a thread at the other end, each lock key blade is an arc-shaped metal piece with a T-shaped clamping head at one end, a clamp spring groove is formed in the outer side of each T-shaped clamping head, and a limiting supporting groove is formed in the inner side of each T-shaped clamping head; each clamp spring is a C-shaped steel wire and can prevent the lock key blades from being released from a T-shaped groove; the casing is a hollow round tube, T-shaped groove ports with the number identical with that of the lock key blades are formed in the lower end of the casing, shapes of the groove ports are consistent with those of the T-shaped clamping heads to ensure that the T-shaped clamping heads can enter the groove ports easily, and the clamp spring grooves are formed; a hoisting bayonet is formed in the upper end of the casing to be used as a force bearing point when the lock key blades and the casing are hoisted; during dismounting, the nut is loosened, the screw is hit lightly to enable an expansion head to sink in a hole bottom, and the hoisting bayonet is hooked by an L-shaped clamping hook to be lifted upwards, so that the casing and the lock key blades can be taken out, then the screw can be taken out, and the dismounting is finished. The undercut anchor is simple in structure, high in tensile strength, free of any trace during replacement, low in cost, high in speed, and easy to promote and popularize; and the attractiveness in appearance is not affected.

Description

technical field [0001] The invention relates to a slot-type detachable reaming anchor bolt, in particular to a slot-type detachable reaming anchor with two lock blades or three lock blades and more than three lock blades Bolts, which are mainly detachable reaming (MKT-CK) anchor bolts produced by Nanjing Mankat Company. The application of the reaming anchor mainly involves post-anchor installation and fixation in nuclear power plants, power plants, tunnels, rail transit, construction and other fields. Background technique [0002] Post-anchoring technology is often used for installation and fixing in nuclear power plants, power plants, subways, tunnels, foundation fixing and other projects, and post-anchoring technology is becoming more and more important in industrial and civil construction projects. If the post-anchor system fails, it will directly lead to the loss of life and property, so it is necessary to use a reliable anchor system, but aging replacement is more impo...

AI Technical Summary

Problems solved by technology

[0003] At present, especially in rail transit, the post-reaming anchor bolts currently used are all products that cannot be disassembled. After five, ten or more than ten years, the anchor bolts will age, and how to replace them will make many companies and research institutions struggle to replace the aging ones. Mechanical anchor bolts are labor-intensive, and non-detachable anchor bolts are relatively expensive to replace, and the replacement period is long, which affects the appearance of the project

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