JPS646475Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tube inversion and insertion device that is extremely useful for applications such as inversion and lining a tube into a tube. Recently, for the purpose of regenerating or repairing existing underground pipes such as water pipes and gas pipes, a construction method has been proposed in which a lining tube is reversely inserted and lined inside such pipes using fluid pressure. . When constructing such a lining method, it is advantageous to invert and insert the tube while applying tension to a wrinkle-free tube, and to maintain a constant inversion and insertion speed in order to obtain an even lining surface throughout the entire length. That is advantageous. As a tube reversal insertion device applied to tube lining of conventional pipes, for example, Utility Model No. 55-70687
As seen in the above publication, the tube winding drum is rotated by the reverse thrust when the tube is reversely inserted using fluid pressure, and a braking force is applied to the drum by the handle operation, thereby controlling the speed of reversely inserting the tube. has been proposed, but
This had the following problems. ○…

Claims (1)

[Scope of Claim for Utility Model Registration] (a) A drum for winding up the tube for reversal insertion; (b) A tube guide duct that houses the drum rotatably and opens in a direction perpendicular to the axis of the drum. (c) in a state where the starting end reaches the mouth end of the guide duct of the pressure vessel or the mouth end of the pipe for reversal insertion linked thereto when wound on the drum; The drum is fixed at an appropriate location, and is gradually reversed and inserted into the tube from the starting end to the terminal end under the pressure of the pressure fluid supplied into the pressure vessel, and the reverse thrust moves the drum in the direction of tube delivery. (d) a rotational drive mechanism connected to the rotational axis of the drum; (e) a rotational drive mechanism connected to the rotational axis of the drum; It is built into the drive mechanism so that it does not transmit the rotation in the reverse direction of tube winding, but when the tube is reversely inserted, the forward rotation speed of the drum rotated by the reverse thrust of the tube is transmitted. , a one-way clutch that prevents rotation from exceeding the forward rotational speed of the drive mechanism and allows the drive mechanism to rotate the drum in the reverse direction during tube winding operations, and (f) detects the reverse insertion speed of the tube. Then, so that this value always maintains the set value regardless of fluctuations in the tube winding diameter of the drum, the normal rotation speed of the drive mechanism and the normal rotation speed of the drive mechanism should be set so that the mechanism does not exceed the normal rotation speed. A tube reversal insertion speed detection device that automatically controls the positive rotational speed of the drum rotating shaft connected via a directional clutch due to the tube reversal thrust while the drive mechanism continues to be driven. Tube reversal insertion device.