Core drill rig

Description

Application

Features

Technical data

■ Description

The GE90R Core drill rig is a portable boring machine generally used for diamond core drilling in soil investigation. (Hence, it is also referred to as Core Drill in this manual.) Mounted on a steel drag skid, it consists of a prime mover, a four (4)-speed transmission, hoist, drill head, slide base, hydraulic tank with controls, drag pulleys and a four (4)-pole mast.

The standard power unit is a 15-horsepower diesel engine. Other optional power units may be used.

Diesel engine core drill rig:

Electric-powered core drill rig:

The hoist and the drill head are driven through a four (4)-speed transmission. The hoist drum is a planetary gear type, with wrap-around bands on the brake and clutch. Actuation of the hoist brake and hoist clutch is through over-centre cam hand levers.

The drill head twin hydraulic cylinders provide an infinite selection of feeds and are capable of exerting an upward thrust of 5,580kgf at hydraulic pressure 103bar (105kg/cm²). The drill head can be swivelled for angle drilling.

The hydraulic power is provided by a variable volume vane pump, driven directly by the engine, so that hydraulic power is always available when the engine is running. The maximum operating pressure is 103bar (105kg/cm²). The oil tank has a capacity of 30 litres.

A hydraulic power-activated slide base provides a 370mm drill movement on or off the bore hole. A drag skid and three (3) drag pulleys are provided to facilitate movements between boreholes.

The standard mast is a four (4)-pole type, with its legs anchored onto the drag skid. Bracing is provided at three (3) levels. Lifting height is about 5.6 metres.

■ Application

1. Soil Investigation

The GE90R portable core drill rig is mainly used for soil investigation projects, helping engineers collect underground samples and understand soil conditions before construction.

2. Diamond Core Drilling

It is suitable for diamond core drilling operations, allowing users to obtain core samples for geological analysis, foundation design and engineering evaluation.

3. Geotechnical Investigation

The rig can be used in geotechnical survey projects to investigate ground conditions, soil layers and subsurface structures for construction planning.

4. Foundation Engineering Survey

Before bridge, building, road or infrastructure construction, the rig can be used for borehole drilling and sampling to support foundation design and safety assessment.

5. Construction Site Investigation

Its portable skid-mounted design makes it suitable for construction sites where multiple boreholes need to be drilled in different positions.

6. Slope and Embankment Investigation

The angle drilling function allows the rig to be used for slope stability investigation, embankment testing and other inclined borehole drilling tasks.

7. Road, Railway and Bridge Projects

The GE90R core drill can be applied in preliminary ground investigation for roads, railways, bridges and other civil engineering projects.

8. Geological Sampling

It can help collect soil and core samples for laboratory testing, geological analysis and engineering reports.

■ Features

1. Portable Drag Skid Design

The GE90R core drill rig is mounted on a strong steel drag skid, making it easy to move between boreholes on construction and investigation sites. The compact skid structure improves site mobility and reduces relocation time.

2. 15 HP Diesel Engine Power

Equipped with a standard 15-horsepower diesel engine, the drilling rig can work independently in outdoor or remote areas where electric power supply is limited. Optional power units are also available according to different project requirements.

3. Four-speed Transmission System

The hoist and drill head are driven through a four-speed transmission, allowing operators to select suitable drilling speeds for different soil investigation and core drilling conditions.

4. Reliable Hoist System

The rig is equipped with a planetary gear hoist drum, wrap-around brake and clutch bands. The hoist brake and clutch are controlled by over-centre cam hand levers, providing stable lifting, lowering and drilling operation.

5. Hydraulic Feed Control

Twin hydraulic cylinders provide smooth and adjustable feed control. The drill head offers flexible feeding force and can generate an upward thrust of up to 5,580 kgf at 103 bar hydraulic pressure.

6. Angle Drilling Capability

The drill head can be swivelled for angle drilling, making the machine suitable for vertical and inclined borehole drilling in geotechnical and engineering investigation projects.

7. Independent Hydraulic Power System

A variable volume vane pump is directly driven by the engine, ensuring hydraulic power is always available when the engine is running. The maximum operating pressure is 103 bar, with a 30-litre hydraulic oil tank.

8. Hydraulic Slide Base

The hydraulic power-activated slide base provides 370 mm drill movement on or off the borehole, making drill alignment, positioning and borehole operation more convenient.

9. Easy Movement Between Boreholes

The machine is equipped with a drag skid and three drag pulleys, helping operators move the rig more easily between drilling positions on site.

10. Four-pole Mast Structure

The standard four-pole mast is securely anchored on the drag skid and reinforced with three levels of bracing. The lifting height is about 5.6 metres, suitable for normal core drilling and soil investigation work.

■ Technical data

GE90R Core drill rig technical data:

Drill Head	Drilling Capacity	100m (NW Casing)
	Type	Spindle type, hydraulic feed
	Drilling Angle	360°
	Operation Side	(R) Right-Standard, (L) Left-Optional
	Spindle Bore	92mm(NW Casing)
	Feed Stroke	500mm
	Spindle Speed	91/340/524rpm, 77rpm (reverse)
	Spindle Torque	79/21/14kgf-m, 93kgf-m (reverse)
	Thrust	5,580kgf (at hydraulic pressure 105kg/cm²)
	Chuck	Manual, 3-jaw type
	Main Clutch	Single plate, dry disc type
	Transmission	Sliding gear, 3 forward & 1 reverse
Hydraulics	Pump	Vane type, variable volume
	Delivery Capacity	25 litre/min. at 1,500 rpm
	Maximum Pressure	105kg/cm²
Hoist	Type	Planetary gear, operated by over-centre cam hand lever
	Hoisting Capacity	1,500kg
	Rope Speed	17/65/101m/min. (average)
	Drum Capacity	Dia.10mm wire rope x 35m long (or Dia.12mm x 25m)
Retraction	Hydraulic	Slide 370mm
Power Unit	Condensing Diesel Engine	15HP at 2,400 rpm
Power Unit	Motor	AC380V, 15kW
Mast	Type	4-pole, mounted on skid, with bracing at 3 levels
	Construction	Steel pipes Dia.60mm (front) and Dia.48mm (rear)
	Sheave Size	Dia. 280mm
	Weight (mast)	170kg
	Dimension (mast)	1,250mm W x 1,260mm L x 5,750mm H (Height taken from the ground to top of crown sheave)
Weight	With Skid & Engine H16	1300kg
Machine Dimension	W x L x H	1,140mm x 2,186mm x 1,585mm

Inquiry >

Products you need :
Your name :
Your tel :
* Your mail :
Your company :
Your country :
* Inquiry :	Please enter your inquiry