| 摘要 |
A wire-pulling device, in particular for laying electric cables in a building, comprising a frame (16), a spool of a flexible elongate element (6a) wound into a coil, and means for unwinding the member and advancing same into a section of a duct of an electric facility. The spool is mounted on a rotary drum (2) driven by a mechanism (13). The drum (2) has a U-shaped section in which the flexible elongate member is located. The flexible elongate member is fed into a rigid guide member arranged tangentially relative to the periphery of the rotary drum. The drum (2) drives a set of guide rollers (19) arranged at the periphery thereof. Each roller has a central section (3) having a diameter that is larger than that of the side sections (4) thereof that surround same. The two side sections engage with the ends of the arms of the U while the central section contacts the flexible elongate member (6) arranged between the arms of the U. The contact of the central section has a tangential velocity higher than the velocity of the arms of the U with the flexible elongate member. The wire-pulling device includes an electronic device for controlling the motor for driving the drum. |
