Hydraulic Core Drilling Rig, Type XTQ-2 Manufacturer

Hydraulic Core Drilling Rig, Type XTQ-2

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Introductions

Hydraulic core drilling rig, type XTQ-2 is a fully hydraulic and portable drilling rig that satisfies the needs of drilling process involving diamond bit, polycrystalline diamond compact (PDC) bit and air down-the-hill drill bit. It is developed specialized for consolidation grouting for the corridor of hydropower station and curtain grouting drilling construction. In addition, it is suitable in drilling at middle or hard rock layer in the meantime widely used in various fields including constructions of highways, railway tunnels and coal mine tunnel as well as geological disaster management.

Parameters

Basic parameters	Drilling depth	200m
	Drilling diameter	75mm
	Diameter of drilling pipe	Depends on the choices on drilling hole, mm
Power head	Gear	1	2	3	4	5	6
	Rotational speed	36~24r/min	55~43r/min	92~76r/min	150~100r/min	228~177r/min	380~315r/min

	System pressure	1.5~20Mpa	1.5~16Mpa	1.5~16Mpa	1.5~20Mpa	1.5~16Mpa	1.5~16Mpa

	Pump used	Small pump	Big pump	Big pump + small pump	Small pump	Big pump	Big pump + small pump
	Torque	0~2060Nm	0~1700Nm	0~1700Nm	0~500Nm	0~420Nm	0~420Nm

	Gear of power head	Low gear	Low gear	Low gear	High gear	High gear	High gear
	Rated maximum torque output	2000N.m
	Up down feeding stroke of the power head	3400mm
Hydraulic system	Rated pressure for main oil line	16Mpa
	Rated pressure for auxiliary oil line	20Mpa
	Swept volume	30.47 + 20.3 + 5.1ml/r
	Rotational speed	2500r/min
Power	Diesel motor model	4L88
	Power	48KW
	Rotational speed	2400r/min

Features

The drill rig has 6 gear rotational speed power head. Diamond drilling bit, polycrystalline diamond compact (PDC) bit or air down-the-hill drill bit are selected in accordance to the particular conditions of the construction site. This helps to ensure a better efficiency for the drilling works.
It adopts fully hydraulic transmissions. The rotary motion and the feed-lifting motion of the power head both are of independent open hydraulic transmission system which is a combination of the fixed displacement pump and the fixed displacement motor. The system has simple structure and an up-to-date design as well as reasonable layout, considering the limiting factors in the tunnel construction. The upper components are light in weight and hence the portable hydraulic pump can be shifted easily. Besides, this allows easy handling on various sudden accidents and convenient for dismantling and maintenance.
The main hydraulic components of the drill rig are from the well-known hydraulic components supplier in the world. The oil filtration process is performed with a two-stages filtration method and air cooler is equipped to control the oil temperature. Thus, the reliability of the hydraulic system is ensured.