SU1244403A2 - Threaded joint with one-sided access - Google Patents

Description

The invention relates to mechanical engineering, in particular to threaded joints of single-sided access parts, and can be used in cases of quick coupling.

The purpose of the invention is to increase the reliability of the connection during vibration loading.

FIG. 1 shows the compound, general, its form; FIG. 2 shows the moment when the assembly of the threaded joint begins; in fig. 3 shows section A-A in FIG. one; in fig. 4 - FIG. 2; in fig. 5 shows FIG. 6 - type G

cut bb to

bb cut in fig.

in fig. one.

: The one-way threaded connection contains a full rod 1 with an external thread 2 and end grooves 3 at one end, longitudinal slits 4 and a expansion head 5 at the other end, and also with a central threaded hole 6. In the threaded hole of the hollow rod, stir an expansion element 7 made with a threaded shank 8 tapering at the end and with a transverse bore 9 at the opposite end.

The nut 10 with the screws w, the screws I, and two longitudinal holes 12 is screwed onto the full rod. The thread pitch of the nut and the corresponding screw thread for its cutting of the hollow rod are made less than the thread pitch of its hole and the shank of the expansion element. In addition, the threaded connection is provided with a lyre-shaped spring 13, which is located between the pins 11 and its middle part and is placed in the opening 9 of the expansion element, and its ends are located in the openings 12 of the nut. A retaining sleeve 14 is fastened to the upper thickening of the expanding element 7 with the antennae 15 and two L-shaped grooves 16 through which the spring 13 passes. Between the upper thickening of the expanding element 7 and the lower hour

five

0

0

five

A locking spring 17 is placed in the locking sleeve. In addition, the joint contains connectable elements 18 and 19.

The threaded joint is assembled as follows.

After pre-assembling the nut, the expanding element, the locking sleeve and the fixing spring onto the hollow rod, the rod is installed in the holes of the elements to be joined 18 and 19 so that the nut rests on the surface of the element 18 and the expandable head of the rod leaves the hole of the connected elements. Then, the expansion element is rotated together with the nut. When moving the expansion element to the lower position, it pushes the head of the hollow rod.

After the head of the hollow rod touches the outer surface of the elements to be joined, the nut is finally tightened. The lyro-shaped spring is compressed, and the hollow rod, nut and expanding member are locked against each other.

After the nut is tightened, the locking sleeve 14 is slightly raised and rotated until the lyre-shaped spring slides into the long groove of the locking sleeve. The locking sleeve under the action of the locking spring 17 is lowered and two barbers 15 falls into the slots 3 of the hollow rod. The nut 10 through the lyre-shaped spring 13 is fixed on the hollow rod 1.

Disassembly of the connection is performed in the reverse order.

Additional locking of the proposed threaded joint allows it to be used in places subject to strong vibration, and at the same time increases its reliability.

Aa

16, / 4.

75

fig.Z.

in- in

figl

Fig.9

Type G

Lj

Claims (1)

THREADED CONNECTION WITH ONE-SIDED ACCESS by ed. St. No. 1183735, characterized in that, in order to increase the reliability of the connection during vibration loads, it is equipped with a locking sleeve spring loaded with respect to the expanding element, with end faces and L-shaped grooves on the side walls, the nut is made with two parallel cheeks, and grooves are made on the end of the shaft, while the locking sleeve is placed between the cheeks of the nut, its end antennae are located in the end grooves of the rod, and the lyre spring is installed in the L-shaped grooves of the locking sleeve. Srig. 1 SU ,, „1244403