湖南方运重工科技有限公司 HUNAN FAE HEAVY INDUSTRIES CO.,LTD. TOGETHER WE FORGE AHEAD

Large Dia.DTH Rig

Overview

Large Dia. Down The Hole Hammer(DTH)


A Down-The-Hole Drill is called DTH in most drilling terms. The down-the-hole drill is basically a mini that screws on the bottom of a .The fast hammer action breaks hard rock into small flakes and dust and is blown clear by the air exhaust from the DTH hammer. The DTH hammer is one of the fastest ways to drill hard rock.DTH is short for "down-the- hole".Since the DTH method was originally developed to drill large-diameter holes downwards in surface-drilling applications, its name originated from the fact that the percussion mechanism followed the bit down into the hole. In DTH drilling, the percussion mechanism-commonly called the hammer - is located directly behind the drill bit. The drill pipes transmit the necessary feed force and rotation to hammer and bit plus or fluids for the hammer and flushing of cuttings. The drill pipes are added to the drill string successively behind the hammer as the hole gets deeper. The piston strikes the impact surface of the bit directly, while the hammer casing gives straight and stable guidance of the drill bit. This means that the impact energy does not have to pass through any joints at all. The impact energy therefore is not lost in joints allowing for much deeper percussion drilling.

FAE product range includes application of large diameter Down The Hammers to be in stalled on high capacity rigs, with long mast stroke, dedicated rotary tables and clamping assembly, capable to guarantee great levels of productivity to drill large piles into rock formations.

FAE DTH application is designed to use DTH system to drill piles up 1200 mm diameter with a single stroke of the rotary up to 24 meters. The units are equipped with crowd/extraction winch mounted on the mast, rotary head with gear box for drilling speed control, dust collector cap, lower clamps assembly composed of one section of blocking clamp and one section of joint breaking clamp. The system is fully hydraulically integrated with the base rig with the option to provide a wireless remote control for the drilling operations.

 

Application field:

Limestone,rock formations or harder strata with obstructions

Possibility to socket into hard rock

Secant piles possibility

Existing concrete and steel reinforcement cutting

 

Features:

Faster production in hard strata a rock formation

Large diameter with single bit compared to standard micro piles

Greater production and timing

Collection of dust and pulverized materials

Enhanced verticality control

No fluids to sustain the pile are required

Full control of piles verticality by means of electronic device






PRODUCT DETAILS


FAR SERIES MULTIPLE PURPOSE PILING RIG base unit is Caterpillar made and we have various sizes and capacities to suit your requirement. Versatility of the undercarriages fully enhance with and width Extendable setup for both transportation mode and working mode. And the undercarriage is nonetheless the famous Transmittal make type that has long proven history in building rugged, versatile and useful undercarriage. 

 

All the main hydraulic components (pumps, valve, motor, connector) are from well-known international brands such as Bosch Rexroth, Brevenni, which ensure the entire system more stable, reliable, high-efficient and energy-saving.

 

Takes international top CAT Diesel engine with electric injection, turbocharged and air intercooling system. It is high reliability, fuel economy and power reserves. 

Efficient turbocharged function advances engine power and performance, and ensure to work in the high altitude areas as usual.

Fuel injection controlled by the controller and DI provides accurate fuel injection volume sensitive to load demands, and ensures a strong economic power and fuel consumption.

Emissions meet standard EPAC-III. It is enviromental-friendly.

 

SERIESDTH

FOUNDATION TECHNOLOGIES