Sheave head Rope crowd system (RDS) Auxiliary winch Tool with quick connection Lateral inclination device Leader Leader support arm Longitudinal inclination device Vertical travel device Support arm brace Leader swing device Radius adjustment device Basic machine High engine output with automatic engine speed control Controlled entirely from cab Sturdy and solid rig design Wide longitudinal and lateral supporting system on the basic machine through triangles High push and pull forces High torque Fast and easy assembly of leader extensions without auxiliary devices Completely self rigging (no auxiliary machines required) Large range of working tools (all piling and drilling works can be performed) Leader swing range +/ 90º Stepless inclination 1:6 forward 1:3 backward depending on type of equipment Increase of effective leader length (3 m) via vertical travel device Adjustment of lateral inclination independent from longitudinal inclination Automatic vertical alignment High alignment forces Simultaneous control of several movements via Load sensing multi circuit hydraulics Quick change of equipment possible through quick connection Equipment design according to latest European regulations and norms High manufacturing quality through quality control by PDE system 2 LRB 255
The transport weight includes the basic machine (ready for operation), 12.6 t counterweight and leader without working tools (such as drilling drive and torque support). Leader length 21.2 m 24.2 m 27.2 m 30.2 m Weight complete 77.8 t 78.9 t 80.0 t 81.2 t The transport weight includes the leader without working tools (such as drilling drive and torque support). Leader length 21.2 m 24.2 m 27.2 m 30.2 m Weight complete 26.7 t 27.8 t 28.9 t 30.1 t The transport weight includes the basic machine (ready for operation). Counterweight 12.6 t Basic machine Counterweight 38.5 t 12.6 t LRB 255 3
Leader length 21/24/27/30 m Capacity: hammer including cap plus pile 30 t Max. hammer weight 15 t Max. pile weight 15 t Max. pull, leader on ground 40 t Max. torque 300 knm Working radius machine Center of rotation front edge leader 4.0 5.7 m Stepless rig inclination adjustment Lateral inclination +/ 1:20 Forward inclination 1:6 Backward inclination 1:3 Vertical leader adjustment above ground level (depending on leader length) 3 m Vertical leader adjustment below ground level (depending on leader length) 5 m Leader swing range +/ 90º Total weight with 800 mm 3 web shoes 78.0 t Ground bearing pressure 1.02 kg/cm 2 Total weight with 900 mm 3 web shoes 78.5 t Ground bearing pressure 0.91 kg/cm 2 The operating weight includes the basic machine LRB 255 (leader length 21 m, without working tools) and 12.3 t counterweight. 4 LRB 255
Water cooled, V 8 cylinder Liebherr diesel engine, model D 9408 TI E, turbocharged with intercooler, power rating according to ISO 9249, 400 kw (544 HP) at 1900 rpm. Option: Water cooled, V 12 cylinder Daimler Chrysler diesel engine, model LOM 444 LA, turbocharged with intercooler, power rating according to ISO 3046 IFN, 605 kw (811 HP) at 1900 rpm. The automatic limiting load control adapts perfectly the power of the main users to the present engine speed. Fuel tank: 810 l capacity with continuous level indicator and reserve warning. Consists of single row ballbearing, fixed axial piston hydraulic motor, spring loaded and hydraulically released multi disc holding brake, planetary gearbox and pinion. Free swing with hydraulic moment control reduces wear to a minimum, because rotation moment is sustained through the hydraulic system by the diesel engine. Swing speed from 0 4.5 rpm is continuously variable. The main pumps are operated by a distributor gearbox. Axial piston displacement pumps work in open circuits supplying oil only when needed (flow control on demand). The hydraulic pressure peaks are absorbed by the integrated automatic pressure compensation, which relieves the pump and saves fuel. Pump for working tools: 2x 300 l/min and 1x 400 l/min Separate pump for kinematics: 69 l/min Separate pump for crowd system: 310 l/min Hydraulic oil tank: 1000 l Max. working pressure: 350 bar No auxiliary power packs are required as application specific hydraulics supply power to all components. The cleaning of the hydraulic oils occurs via an electronically monitored pressure and return filter. Any clogging is shown on the display in the cab. The use of synthetic environmentally friendly oil is also possible. The control system developed and manufactured by Liebherr is designed to withstand extreme temperatures and the many heavy duty construction tasks for which this machine has been designed. Complete machine operating data are displayed on a high resolution monitor screen. To ensure clarity of the information on display, different levels of data are shown in enlarged lettering and symbols. Control and monitoring of the sensors are also handled by this high technology system. Error indications are automatically displayed on the monitor in clear text. The crane is equipped with proportional control for all movements, which can be carried out simultaneously. The Redundant control system allows restricted operation of the machine in the event of a failure on the electronic base control or its sensors. Two joysticks are required for operation. Pedal control can be changed to hand control. Options : PDE : Process data recording GSM modem Propulsion through axial piston motor, hydraulically released spring loaded multi disc brake, maintenance free crawler tracks, hydraulic chain tensioning device. Telescopic undercarriage: 0 1.5 km/h 3 web track shoes: (optional 900 mm) 800 mm Track force: 630 kn Line pull (nominal load): 80 kn Rope diameter: 20 mm Drum diameter: 320 mm Max. line speed: 0 60 m/min The winches are noted for their compact, easily mounted design. Propulsion is via a maintenance free planetary gearbox in oil bath. Load support by the hydraulic system; additional safety factor by a spring loaded, multi disc holding brake. Noise emissions correspond with 2000/14/EC directive on noise emission by equipment used outdoors. Crowd force push/pull: Line pull (nominal load): Rope diameter: Max. line speed: 450/450 kn 150 kn 24 mm 0 87 m/min LRB 255 5
Drilling drive I torque 1 st gear 255 knm 2 nd gear 127 knm Drilling drive I speed 1 st gear 13 rpm 2 nd gear 26 rpm Drilling drive II torque 1 st gear 143 knm 2 nd gear 71 knm Drilling drive II speed 1 st gear 15 rpm 2 nd gear 30 rpm Max. drilling diameter 1200 mm Drilling drive torque 1 st gear 250 knm 2 nd gear 125 knm Drilling drive speed 1 st gear 20 rpm 2 nd gear 40 rpm Max. drilling diameter 1000 mm 6 LRB 255
Drilling drive torque 1 st gear 250 knm 2 nd gear 125 knm for casing installation 1 st gear 290 knm Drilling drive speed 1 st gear 20 rpm 2 nd gear 40 rpm Max. drilling diameter with adapter 3000 mm Max. drilling diameter without casing oscillator 2200 mm Max. drilling diameter with casing oscillator 1800 mm Line pull kelly winch 250 knm Line speed kelly winch 0 70 m/min Line pull kelly winch 200 knm Line speed kelly winch 0 90 m/min Kelly type L mm Transport dimensions Weight kg L 1 mm Working dimensions R mm Drilling depth mm 3/24 10000 6000 24000 11000 22000 3/28 11000 6600 28000 10000 26000 3/32 12500 7300 32000 8500 30000 3/36 13500 8000 36000 7500 34000 4/48 14000 8500 48000 7000 46000 4/65 17500 10500 65000 3500 63000 LRB 255 7
Static moment Max. speed Max. centrifugal force Weight without clamp Dynamic weight without clamp Max. amplitude Length Width Height (without clamp) Min. width 0 40 kgm 2000 rpm 1750 kn 6200 kg 4400 kg 0 16 mm 2300 mm 750 mm 2500 mm 500 mm Max. rated energy 65 knm Min. energy 25 knm Blow rate max. energy: 80 blows/min Max. blow rate: 120 blows/min Max. inclination 1 : 1 Length 5350 mm Total weight 10400 kg Ram weight 4650 kg 8 LRB 255
Max. pressing force per cylinder 2000 kn Number of cylinders 4 Total weight 12000 kg Suitable for all kind of steel sheet piles, single or in pairs, for pressing of walls or boxes. LRB 255 9
See technical datasheet HS 843 HD 10 LRB 255
Set value, digital display Y direction Freefall HW 1 and HW 2 Vibrator Vibrator frequency display Swing speed (1 2 3) Drive limit Analog inclination display Vibrator pump pressure Cylinder for support arm brace Additional pump 2 pressure Blocking carriage locked Engine speed Adjustment carriage locked Set value,digital display X direction Acoustic alarm deactivation Inclination digital display Cable length measurement Clamping head pressure Drilling operation preselection Adjustment page symbol Page forward/ back symbol The rig inclination in x and y directions is shown on the cab screen in large letters and in crosshair. A push button automatically adjusts the rig to vertical position, independent of the current inclination. A push button increases or reduces the rig radius, without modifying the adjusted inclination. The length of the unreeled rope is measured on the crowd winch and displayed in large letters on the cab screen. The vibrator control consists of stepless adjustment of the vibrator frequency, automatic clamping head system and stepless adjustment of eccentrics. An interface transmits the data of the control system, e.g. working depth to the connected PDE system. LRB 255 11
(Additional equipment) Measurements are constantly calculated during the working process. No special measuring process is required. External systems can also be connected to the system. Measurement data relevant to the working process is displayed on the monitor in the cab. The operator can then control the process and, if necessary, correct it. The working process and the measurement can be interrupted at any time. The measurements are automatically continued upon resumption of work. External sensors Example of a protocol (in required language): All data is stored on a memory card. This can be read via a PC. Thereby an evaluation and processing of data can also be performed at a later time. For example, for: client certifications conveying daily production data, down time, etc. Soil condition report A protocol can be printed out from the cab printer after each working process. A GSM modem can be connected to the PDE making long distance data transmission possible. LRB 255 8900 570 14 02/2004 Subject to change without notice.