A cage-cone section expansion bolt (cable)

Abstract

A cage coupling cone expansion anchor rod (rope) comprises a fixed cylinder and a cage inner cone sleeve. The fixed cylinder and a fixed rod (rope) can be a whole, the fixed cylinder also can be divided into the upper fixed cylinder and the lower fixed cylinder to clamp the anchor rod (rope) . Through the principle that the taper of the fixed cylinder and the taper of the cage inner cone sleeve are matched for expansion locking and the principle that the cage inner cone sleeve can be stretch to be large and retract to be small in the radial direction, the cage inner sleeve is compressed in the radial direction when pushed into the hole, the diameter is reduced, and the radial end of the cage sleeve is pushed by a cage limiting ring to move into the hole. Unlike other expansion anchor structures, the cage inner cone sleeve can move inwards close to the hole wall, and after the anchor rod is pulled back to the fixed cylinder in any position, the cage inner cone sleeve is expanded radially by the fixed cylinder to anchor the anchor rod, in addition, and by controlling the length and the opening degree of a V-shaped expansion joint on the cage inner cone sleeve with radial elasticity, the radial expansion amount and the expansion force of the cage inner cone sleeve can be adjusted, and the diameter of the cage inner cone sleeve is required to be larger than the diameter of the anchor hole during installation.

Description

technical field [0001] The technology designed by this patent is to reinforce the surrounding rocks of the roadway together so that the surrounding rocks can support themselves. Now anchor rods are not only used in mines, but also in engineering technology for main body reinforcement of slopes, tunnels and dams. Background technique [0002] Since 1912, the Schelez Mine in Germany was the first tunnel supported by bolts in the world. The tunnels supported by bolts are low in cost, safe, reliable, simple in structure, and highly usable for engineering. It has been widely used in the excavation of mine roadways, the construction of subway tunnels, and high-speed slopes all over the world. Because the amount of use is very large and the use environment is different, various anchors appear, such as: wooden anchors (there are two types of wooden anchors used in my country, namely ordinary wooden anchors and compressed wooden anchors). Rebar or steel wire rope mortar anchor (cem...

AI Technical Summary

Problems solved by technology

However, the above anchors have their own strengths, but they all have certain shortcomings and imperfections. They cannot satisfy the adjustable anchoring force at the same time. The anchoring point can be the full length or any position. The installation efficiency is high and no special tools are required. Or equipment, strong reliability, solidification time without anchoring agent, can be used for instant anchoring, etc. With the development of science and technology faster and faster, the speed of excavation continues to increase, and the demand for construction efficiency and effect continues to increase. The above traditional anchor structure It cannot fully meet the needs of some constructions. Based on the characteristics of the above traditional bolts, I have visited roadways and tunnels many times to conduct on-the-spot investigations. I have summarized the current limitations of the use of bolts, and based on the characteristics of new materials and new processes, etc., A new type of cage-cone section expansion bolt (cable) that can meet the above advantages and good effects has been designed.

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