SU503706A1 - Device for tightening threaded connections - Google Patents

Description

one

A device for tightening threaded connections is known, which comprises a fixed cylinder of reciprocating action, installed permanently outside the zone of the object to be assembled, through which

the rod acts on a lever of a single-sided intermittent key, such as a ratchet, that is hinged to it.

In such devices, connecting elements are used, which allow the transfer; stitching the key is only stepwise, disconnecting it from the rod each time, while maintaining the steepness of the 1st moment, since the shoulder is not permanently tightened.

In order to improve the convenience and accuracy of tightening threaded connections, the key lever of the proposed device provides a floating fork with a width relative to its axis, which ensures that the key is removed from the threaded connection without being disconnected from the rod connected to the stem by means of a sleeve with opposite threads,

FIG. 1 depicts a preset; oo device; and FIG. 2 - the same. h ; The device contains a cylinder 1 of reciprocating action mounted permanently outside the zone of the object to be assembled, the rod 2 of which is connected pivotally to the lever 4 of the key 5 via the rod 3.

The lever 4 of the key 5 is provided with a fork 7, which is floating about its axis 6 and has a width A, which ensures that the key is removed from the threaded connection 8 without being disconnected from the rod 3 and connected to the rod 2 by means of 9 with internal threads of the opposite direction.

Before putting the ratchet wrench 5 on the threaded connection 8, the lever 4 is moved to the position in which the cheek

10 fork 7 is in contact with the pivotally fixed rod 3. The Sgo ensures that the key 5 is put on the threaded connection 8. After the key 5 is mounted on the threaded connection 8, into the cavity

11 cholostosh about the stroke of the cylinder 1 serves the working environment under pressure. The rod 2 acts when it moves upwards to the rod 3 through the sleeve 9 and then through the plug 7 and is bolted with shtyuh): 3 market 4 keys 5. The key 5 turns, vipk 7 when it rises up and moves to the right about the axis 6 of the key 5 Having obtained the necessary supply of working stroke, they create pressure in the working cavity 12 of cylinder 1 and produce a threaded connection. The tightening torque is controlled by the pressure gauge 13, which is calibrated according to the values of the torques. Due to the fact that the fork 7 is mounted on the lever 4 of the key 5 floating about its axis 6, the arm L, and consequently, the tightening torque is constant during the whole process, since during the working stroke the axis 14 of the fork 7 is permanently aligned with the axis 15 1tang 3. Bearing 16 centers the axes 15 and 17 of the rod 3 and the rod 2 with the direction of movement of the piston 18. When moving to the assembly of threaded connections 8 with a different distance B from the plane 19 of the plate 20 to the axis 21 rpeoyei change the stock of the Hall of the stem 2

1slinder 1. For this I rotate the sleeve .. and, due to the opposite of the internal threads, install the new required;

Formula and 3-about b ete n and

A device for tightening threaded connections, containing a power cylinder installed outside the area of the assembled object, a power cylinder during;) a gate post position, the rod of which through a rod acts on a hingedly connected lever with it, for example a ratchet, characterized in that, in order to increase the convenience and accuracy of tightening threaded connections, the key lever is equipped with

vyushuyu about its axis with a fork with a width that provides the removal of the key from the threaded connection without disconnecting from the rod connected to the rod through a sleeve with internal threads

wrong direction.

Phi.