Tunnel Boring Machine (TBM) 0 pages

■ Akkerman's manned Tunnel Boring Machines (TBM) are the epitome of pipejacking power, control and accuracy in an array of soil conditions.TBMs are suitable where manned entry is permissible. Akkerman TBMs can be used with any jacking pipe up to 14-feet (4.3 m) in diameter and a multitude of drive lengths. Designed for unequaled ease of set-up,the Akkerman System can typically be set up and ready to launch in one day. The TBM steering joint allows for full articulation and active steering control while the torque wings provide an anti-roll function. The operator console, located near the face of the machine, permits constant monitoring of soil conditions and line and grade. Hydraulic motors rotate the inner drum and cutter face to excavate soils. The laser, positioned down the tunnel from the laser stand at the tunnel entrance to the target on the face of the TBM, provides articulation prcision. When pipejacking, the TBM is advanced by cylinders at the rear of the System or by an intermediate jacking station for tough ground conditions or longer drives. When tunneling, a tunnel liner section is attached to the rear of the machine. Its cylinders, positioned around the barrel, advance the TBM off the stationary tunnel liner section. After full extension, the cylinders retract in order to assemble another ring of tunnel. Four cutter head configurations are available for ourTBMs.The dirt cutter head, carbide cutter head and sand shelves corne standard with each TBM purchase. Exclusive to Akkerman, thse three cutter head configurations can be changed underground, thus allowing the operator to change heads as soil conditions dictate.The optional, closed faced attachment performs best in unstable ground conditions and features hydraulic closeable doors to reduce subsidence. Sp騩cifications Product Minimum Pipe OD Torque Speed Cutting Diameter TBM 420 51" (1.295 mm) 26.660 Ibf-ft (36,065 N-m) 0-l9rpmw60 gpm (273 L/min) 52.5" ! 1,334 mm) TBM 480 58' (1.473 mm) 47,400 Ibf-ft (64,266 N-m) 0-11 rpmw/60 gpm (273 L/min) 59.5" ( 1,511 mm) TBM 48 Steel 48" (1.219 mm) 22.140 Ibf-ft (30,018 N-m) 0-23 rpm w/ 60 gpm (273 L/min) 49.5" (1,257 mm) TBM 540 65" (1,651 mm) 52.890 Ibf-ft (71,709 N-m) 0-15 rpm w/120 gpm (546 L/mln) 66.5" (1,689 mm) TBM 600 72" (1,829 mm) 59,980 Ibf-ft (81,322 N-m) 0-13 rpm w/ 120 gpm (546 L/min) 735" (1,867 mm) TBM 720 86" (2.184 mm) 96,588 Ibf-ft (130.956 N-m) 0-8 rpm w/ 120 gpm (546 L/min) 87.5" (2.223 mm) TBM 780 93" (2,362 mm) 105,760 Ibf-fl (143,392 N-m) 0-7 rpm w/120 gpm (546 L/min) 94.5" (2,500 mm) "Note: Akkerman standard sizes can be customized to suit project needs. mm a typical 5000 sries job site set-up. The thrust yoke provides a 360-degree surface to minimize point loading on the pipe. Contractors are show here returning the dirt bucket back to the haul unit. The operator's station is located along the inside of the TBM wall beside the conveyor. From this position, the operator can control the TBM steering and monitor or adjust the steering as necessary. The interior of the TBM allows the operator full control overthe Akkerman TBMs cornes equipped with three cutter head forward movement and spoil removal processes while maintaining a configurations.Cutter heads can be changed underground as soil full view of the cutter face excavation. conditions vary. Shown here is the carbide cutter head.