MDT 40 K. Multi-Use Drill Rig Model. Technical Description

Transcription

1 Technical Description Multi-Use Drill Rig Model MDT 40 K The MDT 45 K model is positioned in the average-small size segment of the drill rigs. It was thought out especially for heavy works on the construction site with restricted space and is characterized by high manoeuvrability, reliability and productivity, thanks to the adoption of numerous innovative technical solutions. During the design stage active and passive protection devices were foreseen, in order to guarantee safe working conditions to the operator and other personnel. Design decisions taken for MDT 45 K are made with consideration of the construction site s necessities, requiring the possibility to carry out different types of work using the same equipment especially in small tunnel, underground cantina ecc. So this drill rig model is suitable for a wide range of applications including micropiles, tie rods, jet grouting injections coring operations and For pooling operation Moreover the following peculiarities are to be highlighted: High stability permits to use up to 2,00 m rods with a passage of 220 mm Minimum size permit to pass through standard doors and work at the minimum clearance of 2,200 mm with 1,00 m rod. Standard radio control for an overall vision of work area and significant moving and placing time reduction. Last, but not least, the loading and unloading operations effected in safe conditions. Automatic power distribution system for improving the drilling rig performance and keeping the productivity at a high level. Automatic mechanisms adoption makes the use of the drilling rig much easier even for less experienced personnel. The drilling rig meets the CE norms, the EN 791 norm in particular.

2 Rig body The frame is made of electro welded steel; hydraulic oil and diesel tanks are the integral part. Diesel propulsion unit is installed in the longitudinal position; main pumps are positioned on the flywheel axis; and the supplementary power take-off of the engine supplies energy to auxiliary hydraulic pump, arranged for the secondary services of the drilling rig. A group of distributors are maximum easily reachable, thanks to their position on the side of the rig body. The rig compartment of diesel unit is covered: the drilling machine is sound-proof up to standard about noise emission imposed by the latest European Union s directive thanks to the soundproof engine installed The electric battery is appropriately positioned out of the engine unit, in the special spot. Four independent hydraulic stabilizers allow the correct placement of the rig, and an optical indicator facilitates the placement. BASIC UNIT MDT 40 K Weight of the drilling rig in working condition kg Hydraulic system The hydraulic system with an open circuit is carried out with electrically controlled Danfoss distributors, in particular, rotary, pull-back commands are proportional, for the fine adjustments of speed from the portable remote control. The heat exchanger has a heat dissipation equal to 30% of the installed diesel engine power. Optical and acoustic alarms to control the lower level, the high temperature of the hydraulic oil and hydraulic oil s filter blockage, make easier the ordinary maintenance. Hydraulic oil tank capacity Litre 110

3 Controls Radio remote control All functions of, movement-stabilization of the drill rig, mast placement and work are operated by radio control in order to reduce wasted time of travel and placement. Main selection device activates alternatively functions of rig movements, mast positioning, work operation. Radio control as possibility to be connected by a serial armed cable through multijeck socket to the receiver, receiver is connected to the machine with a multi-polar socket where there is a low-voltage electrical connection that meets imposed safety standards. Standard unit previews a connection cable of 15 m. STOP emergency switch is also installed on the radio control panel. The radio control panel, despite it has all functions for the control of the drill, has a modest size and weight ( 1 kg). All hydraulic functions are controlled from the radio control panel by means of joysticks friction lock with memory, for thrust-pullback and rotation, remain operations are piloted by multi functions selector. A selection made through the main function selector turns on alternatively selectors and switches on the radio control board, to specific functions related to rig translation stabilizing, mast positioning and work operation, this avoids undesired rig movements which contradict the selected function. Working pressure control devices and adjustment panel The machine is provided with two gauges to monitor working pressure with two pressure control devices for the rotary and thrust force, also can be monitoring through a visor existing on the radio control. Other control devices can be added, if required (optional). Thrust balance regulator with its pressure gauge; Clamping pressure regulator for both clamps; Pressure control device with two regulators for separate managing of the pressure of the two clamps. (Optional) Electric control panel, hermetically lock, is positioned and incorporated into a body structure. A radio control panel includes a multipolar socket for the connection of the remote control. Depending on installed Optional Accessories there can be also: A mud pump flow rate regulator; The switch to start up alternatively a water or mud pump; Jet grouting timer selector for timed rod pullback.

4 Power Unit The diesel engine is installed longitudinally in the inferior part of the machine with interposition of anti-vibration mounts. The propulsion unit was provided with a self-control device fitted to indicate alarming and anomalous situations, the nature of which is visualized on the liquid-crystal display. Diesel Engine Type HATZ 4L41C Power max. ISO TR Bhp rpm Cooling type air cooled Diesel fuel tank capacity litre 80 Cover casing The power unit has an easily opened and removed cover casing thank to a silent pack engine, which respect the level required for compliance with the CE noise emission directive, allows the rig to be used in residential area. Crawler truck The crawler is with rubber truck with widening system type Crawlers are activated by two hydraulic engines, connected with planetary reduction gears provided with negative multi-disc brakes. Every engine is powered by an independent hydraulic circuit. Width mm Undercarriage axes Length mm Wheelbase mm Truck shoes width mm 250 Roller n 4 Maximum Speed km/h 1,0 Maximum longitudinal gradeability ( ) (22) Stabilizers During working stage the unit is kept stable by four stabilizers, two of them can be adjusted independently. All the cylinders are equipped with movement control valves flanged on the bearing blocks, that are integral with the cylinders themselves and are connected to pressure chambers through metallic pipes without connecting fittings.

5 Mast slewing and fifth wheel The main fifth wheel, positioned on the rig structure, is provided with a coarse pitch toothing and is moved by epicyclical reduction gear, having an integrated pinion, able to support a huge radial load which permit horizontal operation up to mm The fifth wheel near the mast is moved by one cylinder, equipped with the control valves. The mast slewing movement is obtained through the fifth wheel rotation, for drilling works outside and inside. Considerable sturdiness of the structure and articulated joints including a telescopic zoom, ensures precise positioning of the mast, reducing at the same time moving and shaking, caused while stressing during different working stages. Mast Unit The mast made with high yield value steel; it is provided with lateral guides of special steel for the sliding of the rotary head trolley and for the longitudinal movement. The reduction gear box which activates the chain, moving a rotary head trolley, is installed in the top part of the mast to guaranty an easy accessibility to assembling or disassembling different extensions. Rotary stroke with extension (optional) mm Minimum rotary stroke mm Overall max mast length (without winch) mm Overall minimum mast length (without winch) mm Mast rotation on all position degrees 360 Support mast rotation degrees 190 Mast longitudinal translation mm 400 Thrust force N Pullback force N Rotary travel speed m/min 4,5 Rotary trolley maximum speed m/min 40 Rotary trolley A rotary trolley is trailed by the chain; The trolley is equipped with a piston for the lateral displacement of rotary, letting free the borehole axis for the reinforcement insertion. Rotary trolley lateral displacement mm 350

6 OPTIONALS on request Hydraulic winch VE1350K The winch that is positioned on the top of the mast, is equipped with a transfer case and provided with pulley sheave made of special Teflon, mounted on the ball bearings. It also has one particular rope guiding device that in case of not perfectly aligned lifting, doesn t allow the rope to disentangle from the pulley, preserving it from early wearing and breaking. Besides, the VE1350K winch is provided with an anti-rotation rope and an adequate ballast to support a rope in tension when it is rewound without loading. The useful lifting height is approximately 12 m. This permits lifting of casing tubes. A speed control is proportional and is made with the help of specific manipulator that is positioned on the remote control console. Pulling force dan Drum capacity m 40 Rope speed m/min 40 / 54 Rotary head TR900H-2M The Rotary head is equipped with two hydraulic orbital engines type 96 of double displacement. An electrical selector, situated on the remote control desk, allows to choose between maximum or minimum displacement. A rotary stub-shaft has the 2 inches internal passage and finishes with a pin male thread of 2 3/8 A.P.I. R., and is characterised by the possibility of free or floating movement, useful for protecting rod threads during drilling manoeuvres. 1 st Speed Nm rpm nd Speed Nm rpm Swivel joint GG50B Swivel joint is situated back to a floating stub-haft of the rotary head, and is used for the low pressure fluid adduction up to 50 bar with a joint of 2 Air/water adduction system is accomplished with 2 hoses of 1¼ fed through the zincplated steel hose carrier along with the hydraulic hoses Maximum working pressure (bar) 50 Type of drilling fluid Air, water, foam, bentonite

7 Clamps unit GM220M The clamps unit is composed of two independent clamps, flanged in the base of the mast. Lower fixed clamp; Top clamp provided with a breakout ram. A special design of clamps prevents from material accumulation inside internal parts in order to avoid shutdowns and damages. Clamps are of the open type at the front to allow: Rod installation Jaw replacement Movement of the rig away from the bore hole if the rod gets stuck in the hole Clamping diameter (min-max) mm Clamping force dan Break out torque danm Mast extensions kit PA1000 The mast extensions kit is able to increase a drilling length of mm. Kit includes: Chain Hydraulic hoses Fixing bolt assembly for kit installation Swivel joint GG450BJ Swivel for high pressure fluid feeding up to 450 bar pressure with 1 ¼ joint. The fluid/air/water feeding system is built with a 1 hose and is fed through the steel hose carrier. Maximum working pressure (bar) 450 Drilling Fluid Air, water, foam, bentonite, cement Jet-grouting timer KJ1000 The kit includes: Pullback step sensor. Electronic timer for timed pause Electronically controlled valve for thrust pullback motor action Potentiometer for fine adjustment of rotary rotation speed. The Jet Grouting function control is positioned directly on the remote control panel. Minimum timed interval sec 1/10 Standard step cm 4

8 Line Oiler OL60 Line lubrication device for the emission of nebulised oil into compressed air line; including air valves, check (backflow) valve, oil flow regulator. Capacity l 8,5 Maximum operating pressure bar 23 Maximum airflow l/min Hydraulic-control air/mud valve VA60I 2 Air/mud valve with a activated through hydraulic jack with electrohydraulic control. It is operated by a remote control and permits also a partial opening that allows a flow rate regulation. Clamping limiting device RFSM-1 The device permits to control hydraulically the maximum clamping force, avoiding rods or casing s lesions. The adjustment is for both clamps at the same time. Electronic inclinometer IE1000 The device shows through a digital display the mast inclination to two axes, permitting the control of drilling inclination angle Water pump PAT Triplex high pressure water pump complete with filter on water inlet line for use as decoring pump and for washing operation The pump includes a water filter on the suction line The pump is activated from the remote control panel It can not be used for bentonite and abrasive fluids Maximum flow rate l/min 15 Maximum pressure bar 150 Water pump PAT50-50 Triplex water pump driven by hydraulic engine it is provided with a suction filter The pump is activated from the remote control panel. Maximum flow rate l/min 50 Maximum pressure bar 50

9 Double head Kit Eurodrill model K-CDH800 Permits to install a drilling double head Eurodrill type. Drilling head is operated by a remote control. Double head Eurodrill model K-CDH800 The front rotary is equipped with a hydraulic engine of variable capacity, which consents to get two rotation speeds; Speed shifting is performed through a remote control. The rear rotary is equipped with two hydraulic engines of fixed capacity, which consent to get two speeds, operating with a manual selector positioned on the rotary itself Front Rotary 1 st speed Nm rpm nd speed Rear Rotary 1 st speed nd speed Tunnel Kit KG The rig can be transformed to become suitable for using it in tunnels, following European Union s normative EN791. The kit is made up of several pieces: Exhaust scrubber The scrubber is made for retaining solid parts that otherwise would be expelled into the surrounding environment. Movement lights Lights are fed by electric circuit of the machine to light up the surrounding environment during the movement. NB These lights are not used during the phases of working, but only for traverse operations. Fire Extinguisher The rig, arranged for underground works, is equipped with an aerosol fire extinguisher, placed inside of the frame, in the engine unit, suitable for extinctions in close environments, for fires from: Solid combustible materials (Class A fire) which are wood, paper, textile, composite materials, plastic materials and others. Liquid combustible materials (Class B fire) which are lubricating oils, petrol and other products of petroliferous refining, organic solvents, resin etc. Combustible or inflammable substances of gaseous type (Class C fire) which are LPG (liquefied petroleum gas), methane, polar solvent vapours, acetylene.

10 Electronic and electrical equipment, also energized, up to 40 KV, which are electrical switchboards, dry and oil transformers, cable tunnel, transforming and distribution substations, electronic equipment for telephony and telematic apparatus. The system is activated manually through the switch placed near the control console and protected by a frangible glass. Data parameter recorder RDF1000 The measurement system RDF1000 it is a data capture/display of drilling and injection parameters that take part in the Jet-Grouting. The instrument permits to measure and to record following parameters: During drilling phase: Drilling depth Feed speed of the rig Air pressure of drilling Drilling fluid pressure Instantaneous flow rate of drilling fluid Rig rotation speed During pullback/injection phase: Drilling depth Tool extraction speed Injected mixture volume Injected mixture pressure Injected mixture instantaneous flow rate Tool rotation speed The RDF1000 is built in the aluminium box container of small dimension; the operator interface is made up of the backlight LCD screen of high readability, with 4 lines of 20 letters and a watertight keyboard of scratch-proof polycarbonate, with 18 keys, by which it is possible to type alphanumeric data input. The connection with sensors on the site is performed with a multiple connector that consents an easy assembly and connection. The memorized data buffer consists of a solid extractable hard disk (memory card dimension). At the end of storage phase, all data must be transferred to any portable PC provided with PCMCI interface. In case, where a PC has not a PCMCI connector, the system can be provided (optional) with a reader connectable directly to the serial of the PC.