Tunneling project

Pushing ahead through the mountain with 4,200 kW. PREMIUM model of a »Gripper TBM« Tunnel boring machine including trailing arm, invert and gear motor based on a prototype by HERRENKNECHT AG from Schwanau. Using the grippers that give this machine its name, laterally extendable hydraulic cylinders clamp the tunnel boring machine to the tunnel wall. Hydraulic jacking cylinders steer the route with swinging movements and impart contact pressure to the drill head. Thanks to a rotating cutting wheel, this breaks rock chips out of the rock, and they are transported away via scrapers, channels and a conveyor belt. Rock support during tunnel excavation is provided by various machine devices, for example for installing reinforcement mats and rock bolts, mounting stabilising steel arches or taking test bores for preliminary exploration. 

Variant kit! Floor model of a tunnel boring machine pulled by a »Gripper TBM« tunnel boring machine with various conveyors, devices and machines for tunnel construction, transformers, pumps, equipment containers and control units. The kit can be built in different configurations.

Heavy load for scene design. »Gripper TBM« drill shield Tunnel boring machine with roller bits and scraper blades. Also suitable for installation in a diorama to create a rock breakthrough during tunnel construction. The drill shield can also be driven with the Geared motor, Art. 180722 or the Synchronous hobby motor, Art. 180629. Motors sold separately. 

Rounded precast concrete elements for lining a tunnel floor in a tunnel construction project. Lining segments are positioned using a vacuum system and serve as a route for the tunnel boring machine trailing units and for laying rails in railway tunnels at a later point. 

Floor model of a white, rail-mounted gantry crane with hoist and trolley for vertical and horizontal lifting operations with heavy loads, e.g. for the assembly of tunnel boring machines on tunnel construction sites. Generic depiction with imprint of the »HERRENKNECHT« lettering. Track profiles enclosed. Model not functional.