摘要:
Bei einer Schildvortriebseinrichtung (1) ist vorgesehen, zwischen einer eine Förderschnecke (5) aufweisenden Abfördervorrichtung (4) eine Ausschleusvorrichtung (10) mit einer Drosseleinheit (9) vorzusehen, die über wenigstens ein Paar einander gegenüberliegender Walzen (13, 14) verfügt. Die Walzen (13, 14) sind jeweils paarweise gegenläufig drehbar, wobei die jeweilige Drehrichtung der Walzen (13, 14) in ihrem aufeinander zu weisenden Bereich von der Abfördervorrichtung (4) wegweist. Die gegenläufigen Walzen (13, 14) fördern aufgrund der Sog- und Transportwirkung sowohl stark schluffhaltiges Material als auch einen hohen Anteil an Grobfraktion aufweisendes Material, ohne dass ein Wechsel in der Betriebsart oder die Beigabe von Zusätzen erfolgen muß.
摘要:
A shield tunnelling machine comprises a tubular shield body (12), an excavating cutter assembly (52) disposed on a front end of the body, a partition wall (24) for defining the interior of the body into a front region and a rear region behind the front region, the front region having a first chamber (18) for receiving matter excavated by the cutter assembly and a second chamber (20) communicating to a rear portion of the first chamber so as to receive the excavated matter from the first chamber, the second chamber extending around an axis of the body, a rotor (46) disposed in the first chamber and having an outer diameter gradually increasing toward the rear, a drive mechanism (84) for turning the rotor around a first axis extending in the longitudinal direction of the body and rotating the rotor around a second axis eccentric to the first axis, an annular member (66) mounted to the rotor so as to be turned and rotated together with the rotor in the second chamber and extending around the axis of the body and a discharging mechanism for discharging the excavated matter received in the second chamber from a lower portion of the second chamber to the rear region.
摘要:
Proposed is a tunnel-driving machine designed to bore a tunnel and having, in addition to a large outer cutter wheel (8), a smaller central cutter wheel (17) which is mounted near the hub of the outer cutter wheel (8) and which enables the formation of soil plugs and dead cores to be avoided along the longitudinal axis of the cutting wheel (8), thus reducing the resistance of the machine to forward motion.
摘要:
A shield tunneling machine comprises a shield body (1). The shield body is divided into a soil chamber (8) and an inside chamber (9) by a partition wall (7). The soil chamber (8) has a conical peripheral surface converging gradually rearward. A crankshaft (18) having an eccentric portion is rotatably supported by the partition wall (7) at the center of the partition wall corresponding to the axis of the shield body. A cutter disc (3) with roller bits is secured to a front end of the crankshaft, and a conical rotor (20) is rotatably mounted on the eccentric portion of the crankshaft behind the cutter disc . A rear end of the crankshaft is connected with a drive. Since the cutter disc is rotated at an increased rotary velocity by five to ten times as many as that of a cutter disc in a conventional shield tunneling machine, crushing of gravels can be efficiently carried out by the cutter disc with roller bits in coorporation with the conical rotor mounted on the krankshaft.
摘要:
A system for boring a hole in the ground comprises an excavating machine (12,72,116) provided with a tubular body (16,74,128), excavating means (48) supported by the body so as to excavate the ground, means (44) for shifting the excavated substances to the periphery of the body and driving means (36,120) for operating the excavating means.