SU112281A1 - Device for screwing and tightening threaded connections - Google Patents

Description

YcTpoiicTBa for screwing in and zat5; KKI of threaded connections with a given maximum tightening torque, driven by the engine through the freaks, it is the 1st clutch and the worm gear, are known.

A feature of the proposed device of the same type is the generation of a hydraulic coupling, with a supply of compressed air to the Heii through a reducer, regulate; air pressure and siabzhein) 1y Ghnyusmetr, 1 of which is proportional to the limiting lumentia delay; compounds. Such an embodiment of the proposed device makes it possible to increase the accuracy of adjusting the magnitude of the maximum amount of puff.

FIG. 1 shows the proposed device, front view; FIG. 2 is a top view; in fig. 3 side view.

And the proposed device uses a pneumatic disk clutch for transmitting and controlling torque. The clutch has a B 1utreine disk :. / and external discs 2. External drive discs 2 1way slot; rings 3, strengthened the 1st internal rim of the flywheel 4, and have external keys, prevented, Ayush, and their turning in the ring. The pivotal driven discs / worn on the splines of the sleeve 5, sitting lia uiHOHKe on the worm shaft 0.

Under the pressure of compressed air, entering the switch 7 from the power supply network in direction of arrow 8 (see Fig. 1) to the coupling chamber .9, the outer DISCS 2 by the piston 10 move along the splines of the ring 5 and the outer surface: At the same time, the pressure; 1e of compressed air was set to 1 Bets in accordance with the following parameters:; torque required to tighten the threaded connection. with the help of a reducing valve 11. When turning on. - is transmitted from the electric motor .2 through a worm gear pair Ij of the spike //, on which the patromas 15 are rigidly attached to hold the swiveling parts. The screwed-in part for each revolution of the spindle 14 is moved by one thread pitch, the cartridge 15 and the spindle 14 are carried along.

The pneumatic disk clutch is adjusted by the pressure reducing valve // so that after the occurrence of a voltage in the circuit corresponding to a given torque, the disks / and 2 instantaneously slip. The pressure reducing valve 11 is equipped with a pressure gauge 16, the readings of which are proportional to the limiting torque of the threaded connection.

PREAMETE OF THE INVENTION

A device for screwing and tightening threaded connections with a predetermined limiting torque, driven by an electric motor through a friction clutch and a worm gear, characterized in that, in order to improve the accuracy of adjusting the magnitude of the limiting torque, the friction clutch is made tonic with an approach to There is compressed air through a pressure regulator that regulates the air pressure and is equipped with a pressure gauge, the readings of which are proportional to the limiting torque of the connection lag.

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