Special Equipment for Tunnel Construction BP_Tunnel_enUS.indd 1 01.02.
Liebherr Special Equipment for Tunnel Construction 1 Crawler Excavators Liebherr tunnel excavators are special machines which can be used in all conventional types of tunnelling applications: In order to create crosstunnels after tunnel drilling machines have been used, for secondary profiling when explosives are being used and, of course, for direct excavator tunneling. Particular features of these machines are their economic operation, high performance, and reliability. 2 BP_Tunnel_enUS.indd 2 01.02.
2 Wheel Loaders Liebherr tunnel wheel loaders are specially designed for use in tunnel applications. The advantages of the wheel loader´s hydrostatic drive are proven in difficult tunneling applications. The advantages are: reduced fuel consumption through improved utilization of the engine´s output, minimal brake wear through the hydrostatic braking effect of the drive and reduced tire wear thanks to stepless adjustment of the tractive force in line with what is required.
1Crawler Excavators Liebherr tunnel excavators are special machines which can be used in all conventional types of tunnelling applications: In order to create cross-tunnels after tunnel drilling machines have been used, for secondary profil- ing when explosives are being used and, of course, for direct excavator tunneling. Particular features of these machines are their economic operation, high performance, and reliability. 4 BP_Tunnel_enUS.indd 4 01.02.
Economy with High Performance Tunnel construction is one of the toughest environments for excavator operation that exists. The operation of a tunnel excavator becomes efficient when the machine, despite the harsh conditions, can cut out the tunnel profile required as rapidly as possible but in economical fashion. This means that a tunnel excavator must produce a high hydraulic capacity and, above all, be provided with operational fittings which are tailored to the particular application.
Liebherr Crawler Excavators for Tunnel Applications • Rotatable boom with 2 x 45° mounting • Particle filter certified in accordance with VERT Standard • Hoses on the attachment laid on the side and covered (reduction of emissions from real machines in tunnel • Pipe routing on the attachment protected by metal plates construction) • Special uppercarriage protection • Special tunnel cab heavy-duty design • Protective box made of stainless steel for all electronics • FOPS and FGPS fitted as standard and elect
R 924 Crawler Excavator R 944 C Compact Tunnel R 924 Compact Tunnel Tunnel ft Engine output HP(I)*/kW 173/129 255/190 lb 71,500 95,900 - 97,000 m 30 Operating weight 9 8 25 7 V 20 6 R 924 Compact Tunnel (Version 5 m) 5 15 30 9 10 3 H 2 5 8 1 25 7 20 0 6 V 15 4 -10 H 7’ 17’3” 21’7” 3 2 -2 -3 -4 -15 924 5 1 -5 10 8 9 30 0 6 7 4 5 20 25 2 3 10 15 1 5 0 m 0 ft 3’0” 0 0 -1 -5 5 10 17’9” 18’1” 24’2” m 4’11” ft 4 -1 -5 -10 R 944 C Tunnel -2 -3 -
2 Wheel Loaders Liebherr tunnel wheel loaders are specially designed for use in tunnel applications. The advantages of the wheel loader´s hydrostatic drive are proven in difficult tunneling applications. The advantages are: reduced fuel consumption through improved utilization of the in- stalled engine´s output, minimal brake wear through the hydrostatic braking effect of the drive and reduced tyre wear thanks to stepless adjustment of the tractive force in line with what is required.
Economy with High Performance In comparison with conventional drive systems, the hydrostatic drive used by Liebherr wheel loaders allows for a reduction in fuel consumption of up to 25 %. This cuts operating costs and reduces emissions. At the same time, the use of the hydrostatic drive means that the Liebherr Diesel engine can be installed with the output shaft pointing backwards.
Liebherr Wheel Loaders for Tunnel Applications • Cab design developed specifically for tunnel construction, with laminated safety glass • Four working lights on the rear side • Hinged, detachable outside mirror • Tilt cylinder protection • • • • • Rear bumper Diesel particle filter beneath cladding Audible reversing warning device Fire extinguisher (13 lb) in protective box Air pre-cleaner Top-Air 10 BP_Tunnel_enUS.indd 10 02.02.
L 550 T L 556 T L 566 T lb 25,620 29,960 35,560 HP(I)*/kW 173/129 188/140 255/190 Operating weight lb 35,810 39,260 49,900 Bucket capacity yd3 3.66 4.19 4.
3 Crawler Loaders Thanks to their high break-out forces, excellent maneuverability, and robust equipment, Liebherr crawler loaders are the ideal machines for tunnel construction. Depending on the operational specifications, they can be configured with individual additional options to tailor the machines to particular applications and conditions. A high-performance air conditioning system matched to a pressurized cab helps create a pleasant working environment.
Economy with High Performance Liebherr crawler loaders provide impressive performance in tunnel operations thanks to their superb production capacity. This is the result of unbeatable maneuverability, quick cycle times, and a high bucket filling factor. Thanks to the Liebherr hydrostatic travel drive, tractive force can be applied to both tracks without interruption, therefore ensuring excellent handling performance under load.
Liebherr Crawler Loaders for Tunnel Applications (LR 624/LR 634): • Tank guard • Four operational working lights on the rear • Heavy duty radiator guard • Diesel particle filter (optional) • Top Air filter • Rear area monitoring camera (optional) • Reversible fan • Rotating beacon (optional) • Protective ring for final drive • Protective ventilation system (optional) • Lifting cylinder guards • Protective grille for front window (optional) • Tilt cylinder guard Crawler Loaders Engine output Operating weigh
LR 634 HP(I)*/kW 97/72 141/105 173/129 ght lb 24,300 - 26,500 37,200 - 40,900 45,800 - 50,000 ty yd3 1.57 - 1.63 1.96 - 2.35 2.48 - 3.
The Liebherr Group of Companies Wide Product Range State-of-the-art Technology The Liebherr Group is one of the largest construction equipment manufacturers in the world. Liebherr’s highvalue products and services enjoy a high reputation in many other fields, too. The wide range includes domestic appliances, aerospace and transportation systems, machine tools and maritime cranes.
