No Wrench Helical Anchor

No Wrench Helical Anchor

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· No wrench helical  anchor is a device designed to support structures, most commonly used in geotechnical and construction applications.

· Also known as a ground anchor, percussion driven earth anchor or mechanical anchor, it may be impact driven into the ground or run in spirally, depending on its design and intended force-resistance characteristics.

Material:Carbon Steel

What is no wrench helical anchor?

No-Wrench Screw Anchor function by guying wires or cables within utility poles. No-Wrench Screw Anchor comprises a threaded rod of galvanized steel having an upset hex. There is a double or single helix attached by a shielded electric arc to a square steel hub. The third part is the guy wire eye of forged galvanized steel connected to the anchor rod.

The No wrench screw is installed by turning it into the ground by a machine or hand. Both the Triple Eye and the Thimble Eye anchors have a rod with an enormous opening to support a turning bar that ensures the anchor is screwed on the ground. The anchor can be power-installed due to its eye that engages in the adapter of the hole-boring machine. The wrench anchor serves best in loose to medium dense soils. After installation, the exposed anchor should have a final height of 8-12 inches extending the grade height.

Installation of No-Wrench Screw Anchors Procedure:

1.The Kelly bar adapter should be attached to the output shaft or the digger’s Kelly bar.

2.The power installation no-wrench tool should be bolted to the Kelly bar adapter.

3.Appropriate pins located in the anchor installation tool to be removed. The anchor rod-eye to be inserted into the tool and the appropriate setting re-pinned.

4.The wrench anchor to be driven at a vertical position. When the anchor’s helix submerges in the ground, the boom needs to be retracted to the accurate guy angle.

Note:

No-Wrench Screw Anchor can be installed in most types of soil.

It takes 8-10 minutes for the power-installed screw anchor to install when the wrench anchor is connected to the auger flight or Kelly bar of the digger and an arrangement of a locking dog supporting the anchor.

The screw anchor can be installed with a three-half foot rod or the 7-foot rod. It is possible to use either the 7 or 3 ½ foot rod. It is recommended to make a maximum of 14-feet of installing depth to support tool recovery.

Installation of the No-Wrench Screw Anchor by hand utilizes a power digger or turning bar. When using a digger, it needs an installing tool and adapter. There are limitations when using the anchor.

Inspection and Maintenance:

All fasteners should be periodically checked within the drive train to ensure they are undamaged and tightly fixed.

Loose parts can be thrown at high speed, causing injuries, death, or property damage. Loose bolts can interfere with the torque or cause damages in the drive train. It is recommended that replaced bolts be of the same length, grade, and size as the manufacturer’s originals.

Pins that are larger than the specified ones should not be used to prevent cracking of the adapter.

All new screw anchor tools should have coil lock and retaining pins.

Contact Information

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