SU1540404A1 - Threaded connection - Google Patents

Description

(46) 06/15/92.Bul. No. 22

(21) 4341305/27 (22) 11/09/87

(72) Yu.M. Khomarevsky 453) 621.882.6 (088.8)

(56) USSR Copyright Certificate 490952, cl. F 16 B 5/02, 1974. (54) THREADED CONNECTION

(57) The invention relates to mechanical engineering, in particular to threaded joints of parts. The purpose of the invention is to reduce the metal content and ensure the dismounting of the joint. The threaded joint contains a sleeve with a head installed in the parts, a hollow head bolt housed therein, and a washer installed between the head of the bolt and the bottom surface of the base part. The washer has an outer cylindrical surface equal to the diameter of the holes in the parts, and its end planes are inclined to the axis of the outer cylindrical surface at an angle of 30-60 °. Slots are made on the head of the sleeve and at the end of the bolt opposite to the head. A bolt spring can be installed in the bolt and bushing pliers and in the axial bore of the bolt. Mounting and dismounting is possible with the help of a technological holder. 2 Il.

I (L

The invention relates to mechanical engineering.

The purpose of the invention is to reduce the metal content and ensure the dismantling of the joint.

FIG. Figure 1 shows the details of a threaded joint during its installation in the aperture of the parts being joined; in fig. 2 - threaded connection assembled.

The threaded connection contains a bolt 1, a sleeve 2 with a head 3, fitted with a spitz 4, with a height equal to the total thickness S of the parts to be joined 5 and 6, and having a cylindrical surface 7 with a diameter equal to the diameter of the holes in parts 5 and 6. The bolt 1 is made with a central threaded hole 8 with thread, reverse in the direction of its external thread. At the end of the bolt opposite the head, the spitz-dogs 9 are made. The diameter of the head of the bolt 1 is equal to the diameter of the holes in parts 5 and 6. Between the head of the bolt 1 and the bottom surface of the part 6 there is a washer 10 with an outer cylindrical surface 11, the diameter of which is equal to the diameter of the holes in the part x 5 and 6, with face flat surfaces

12, inclined to the axis of the outer cylindrical surface 11 at an angle of 30-60, and with an inner hole

13, the axis of which is perpendicular to the end surfaces 12, and the diameter is equal to the thread diameter of the bolt 1. In the central hole 8 of the bolt 1 a plate spring 14 may be placed, interacting with the slots 4 of the bush 2 and the birds 9 of the bolt 1.

The installation of the threaded connection is carried out as follows.

SP

Јъ

Ј About 4b

Nolt 1, washer 10 and bushing 2 are inserted into holes in parts 5 and 6 using a process holder 15 pre-installed in hole 8 of bolt 1, while washer 10 is installed on the threaded part of bolt 1-, the sliding surface of hole 13 along the upper the parts 16 and the flare nut 17 of the holder 15. The rotation of the flare nut 17 of the holder 15 mounted with the projections 18 into the slots 9 of the bolt 1 tightens the connection. During the tightening process, the sleeve 2 is kept from turning by hand or tool through the slots 4. After tightening, the process holder 15 is removed from the hole 8 of the bolt 1 and the connection is contrait by a spring 14.

The construction of a threaded joint with one-sided access during installation is simple and easy to manufacture, non-metal-intensive, sufficiently strong when the joint is cut and allows you to disassemble the joint when using a process holder.

Claims (1)

Invention Formula A unidirectional threaded connection containing the base and attachable parts with smooth coaxial holes made therein, and in the attachment part the hole is made conical, a cylindrical sleeve installed in the holes with a threaded hole and a head with internal spitz, the shape of which corresponds to the Conical hole in the part, the diameter of the cylindrical surface of the sleeve is equal to the diameter of the holes in the connected parts, a screw with a head placed on the inaccessible side of the parts to be connected is installed in the threaded hole of the bushing, and the diameter of the head is equal to the diameter of the holes in parts to be joined, characterized in that, in order to reduce metal consumption and ensure the dismantling of the joint, it is provided with a washer, the sleeve is made with a height equal to  the thickness of the parts to be connected, the bolt is made with a central threaded hole with a thread that is opposite to the direction of its external thread, and at the end of the bolt opposite the head, the spitz-dogs are made, the washer is made with an external cylindrical surface, the diameter of which is equal to the diameter of the holes in the joint parts with flat face surfaces inclined to the axis of the outer cylindrical surface at an angle of 30-60 °, and with an internal hole, the axis of which is perpendicular to the front surfaces, and the diameter is ..to the bolt threads, the washer is placed between the bolt head1 and the bottom surface of the base part.