Difference Between Left-Handed Anchor And Right-Handed Anchor

Difference between left-handed anchor and right-handed anchor

Characteristics of left-hand anchor:Left-hand threaded steel anchor without longitudinal rib resin anchor anchor high strength, reasonable structure, preload, can automatically adjust the direction of force, increase the binding force on the surrounding rock, can realize the mechanization of rapid installation of the left-hand anchor Advantages of left-hand anchors:High strength of the anchor, reasonable structure, preload, can automatically adjust the direction of force, increase the binding force on the surrounding rock, can realize the mechanization of rapid installation of the left-hand anchors. It can be used as end anchor, extension anchor and ** anchor, mainly used for high strength support of large deformation roadway in highland pressure mine, and also can be used for high strength, long-lasting roadway support of various projects such as railroads, hydropower and so on.

Left-handed anchor use method.

1. Determine the anchor hole position according to the design requirements, and drill the hole with drilling rig.

2.Blow out the rock dust in the hole with pressurized air.

3.Send the anchoring agent to the bottom of the hole, and start mixing with the anchor rod (the mixing time is specified according to the type of anchoring agent), after mixing, unload the mixing tool, and reach the waiting time, unload the mixing connecting head, install the anchor plate, ball washer, friction washer, and use the special wrench to tighten the nut.

Right-hand anchor, also known as equal-strength threaded steel anchor, is a tool to determine the anchoring force, with small size, light weight, easy to carry, easy to operate, safe and so on, is widely used in coal, national defense, tunnels and transportation and other tunneling operations.

Characteristics of right-hand anchor

(1)Reasonable structure, solving the shortcomings of low strength of anti-twist anchor threads and patting flat.

(2)The bearing capacity is 40% higher than the same specification of anti-twist anchor.

(3)Simple operation, low price, widely used in coal mines, railroads, hydropower and other projects all kinds of roadway support.

Installation steps of right-hand anchor

1、According to the design requirements to determine the position of the anchor hole, with an eye drilling machine, anchor drilling rig or coal electric drill drilling, . The depth is 80-100mm shorter than the length of anchor.

2、Extend into the bottom of the eye with a pressure pipe, through the compressed air, the hole will be blown clean of rock dust.

3、Diameter of the hole should be 6-12mm larger than the diameter of the anchor.

4、Feed the medicine roll into the bottom of the eye with the anchor, start the mixing device for mixing, and strictly control the mixing time according to the requirements of resin anchor fixing agent.

5、After reaching the curing time, put on the tray and tighten the nut.