SU1661493A1 - Threaded joint - Google Patents

Abstract

The invention relates to mechanical engineering. The purpose of the invention is to increase the reliability of the connection. The locking element 12 in the form of a threaded sleeve is expanded with a special insert and screwed onto the threaded rod 1, aligning the groove 2 of the threaded rod 1 with the groove 13 of the locking element 12. Remove the special insert, install the L-shaped insert 17. When installing the nut 3 legs until the threads of the nut 3 with the thread of the rod 1 are in contact with the grooves of the locking element 12 and they begin to screw the nut onto the rod 1 until the surfaces of the legs abut the surfaces of the axial grooves of the locking element 12 and the surfaces of the conical An annular groove 4 of the nut 3 with a conical outer surface of the locking element 12. The connection allows to increase the contacting surfaces of the threaded threads of the rod 1 and the locking element 12, creating an additional area of resistance to both the shear and the nut's turning from the occurring variable loads. 1 hp f-ly, 5 ill.

Description

figure 1

This invention relates to mechanical engineering, namely to a threaded joint of parts.

The purpose of the invention is to increase the reliability of the connection.

FIG. 1 shows a threaded joint, a cross section; FIG. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. I; in fig. 5 shows the node I in FIG. 2

The threaded connection includes a threaded rod 1 with a longitudinal groove 2, a nut 3 screwed onto a rod with an annular conical groove 4, an annular groove 5 and an annular groove 6, and on the end of the nut from the side opposite to its annular conical groove 4, radial grooves 7 and, on its outer side surface, an outer latch groove 8 communicating with the radial groove of the nut 3. The threaded joint also includes a locking ring 9 with two legs 10 at its end, and the surfaces of the legs 11 facing each other sheny away from the end face of the locking ring 9.

In addition, the threaded connection contains a locking element 12 in the form of a threaded threaded conical sleeve, with radial grooves 13 made at the end of the smaller base of the cone, and on both sides of the cut 14 there are two through axial grooves 15. The walls of the 16 grooves facing cut 14, made obliquely, responder facing each other surfaces of the legs 11 of the fixing ring 9.

The threaded connection is provided with a G-shaped liner 17 and a cut-off spring ring 18 with a protrusion 19 on its inner side, while the ring 18 is placed in the outer ring groove 8 of the nut 3, and the protrusion 19 in the slots 7 and 2 of the nut and shaft.

The installation of the connection is carried out as follows.

The locking element 12 in the form of a threaded sleeve is expanded with a special insert and screwed onto the threaded rod 1, aligning the groove 2 of the threaded rod 1 with the groove 13 of the locking element 12, remove the special insert, install the L-shaped insert 17, and seal the threaded threads the rod 1 and the locking element 12 When installing the nut 3, the legs 10 are guided into the grooves 15 of the locking element 12 until the nut 3 touches the thread with the thread of the rod 1 and begin to screw the nut 3 onto the rod 1 until the surfaces of the 11 legs 10 are elastic with a surface of the axial slots 15 of the locking member 12, and are also compatible conical surface of the annular groove 4 and the nut 3 the conical outer surface of the locking element 12.

With further screwing the legs

10, moving along the conical surfaces of the locking element 12, force the threaded threads of the locking element 12 and the threaded threads of the rod 1 into tight contacts between themselves, increasing the contact surface of the threaded threads of the stopper element 12 and the rod 1, forming a monolith, creating an additional area of resistance how to cut,

5 and on the lapel nut 3 from the possible variable loads.

All this increases the strength of the thread of the joint and prevents the joint from self-unscrewing under the action of forces.

0 occurring during the operation of the node.

To dismantle the assembly, it is necessary to remove the spring ring 18, unscrew the nut 3, remove the L-shaped insert 17 and, placing in section 14 of the locking element 12 a special insert, produce a cuff of the locking element 12.

In the proposed connection, the thread 1 of the rod and the nut 3 operate under normal contact conditions, which reduces the possibility of an additional concentration of stresses affecting the strength of the connection.

The use of the invention allows to increase the reliability of locking the threaded connections operating under alternating loads and its repeated use.

Claims (2)

1. Threaded connection containing 0 a threaded rod, a nut with an annular conical groove screwed on it, and a locking element in the form of a split threaded conical sleeve installed in the annular conical groove of the nut, which is due to the fact that, in order to increase the reliability of the connection, it is equipped with a L-shaped liner and a locking ring with two legs at its end, and the butt facing one side of the other are beveled away from the end of the ring, the threaded rod is made with a longitudinal groove, and in the locking element, at the end of the smaller base mustache, provided with radial grooves, and on both 5 sides of the section - two through axial grooves, the walls of the grooves facing the section being made obliquely in response to one facing the other surfaces of the legs of the fixing ring, in the nut above the coma ring groove an annular groove in communication with it, and above it an annular groove in communication with the annular groove, a retaining ring is installed in the annular groove of the nut, and its legs are placed in the annular groove of the nut and in the through axial grooves of the locking element, and the L-shaped liner is installed one end into the radial groove of the locking element, and the other into the longitudinal groove of the threaded rod. 2. The compound according to claim 1, from l and h and ea with the fact that it is provided with a split line gum ring with a protrusion on its inner side surface, on the nut end, on the side opposite to its annular conical groove, radial grooves are made, and on its outer side surface, an outer annular groove communicating with the radial groove of the nut, and a split spring ring is placed in the outer annular groove of the nut, and its protrusion in the combined grooves of the nut and the threaded rod. B-e) YU / 5 lGmi6 5 p Fig.z ten USF .1 8-8 1 FIG. five 78