Automatic tightening device for studs and nuts

Abstract

The invention discloses an automatic tightening device for double-end studs and nuts. The automatic tightening device comprises an arch-shaped support, a lead screw, transverse guide rails, a motor, longitudinal guide rails, a tightening air cylinder, lifting-up devices and supporting claws, the lead screw and the transverse guide rails are arranged on the upper portion of the support, the motor is connected with the lead screw, the longitudinal guide rails are distributed to be perpendicular to the transverse guide rails, the tightening air cylinder is arranged on the upper portion of the longitudinal guide rails, and the air cylinder shaft of the tightening air cylinder is connected with a tightening mechanism through a connecting piece. The drive rod of the tightening mechanism is connected with a tightening head. The automatic tightening device for the double-end studs and the nuts is used for automatically tightening batched double-end studs or nuts regularly distributed on a narrow workpiece, the reliability, the precision and the interference resisting capacity of a tightening system are ensured, and tightening consistency and tightening efficiency can be improved.

Description

technical field [0001] The invention belongs to a device for tightening studs and nuts, in particular to an automatic tightening device for double-ended studs and nuts. Background technique [0002] Double-ended studs refer to cylindrical fasteners with threads at both ends, which are widely used in electric power, chemical industry, oil refining, valves, railways, bridges, steel structures, automobile and motorcycle parts, machinery, boiler steel structures, hanging towers, large Span steel structures and large buildings, etc. The double-ended stud connection is to screw one end of the double-ended stud into the screw hole of one of the connected parts, and the other end passes through the through hole of the other connected part, then put on the washer and tighten the nut. The assembly of double-ended studs needs to be completed with the help of special tools. The usually used double-ended stud tightener is to rely on external force to rotate the screw sleeve, screw the t...

AI Technical Summary

Problems solved by technology

[0004] For a single slender workpiece, there are evenly distributed batches of double-ended studs or nuts that need to be tightened. The traditional method of tightening double-ended studs or nuts is artificially tightened with an electric or pneumatic wrench. Low, and the degree of tightening is different, the size of the torque is difficult to quantitatively control and display

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