SU1413310A1 - Part joint - Google Patents

Abstract

The invention relates to mechanical engineering, to the connection of parts. The goal is to expand technological capabilities. The connected parts 4 and 5 are fastened with a threaded rod, a nut 2 and a lock nut 3. On the head 6 of the threaded rod 1 and in the hole of the connected part 5, there is a conical annular protrusion 7 and a conical ring groove 8, respectively. On the threaded rod 1 under the nut 2 a floating device is placed, its centering device in the form of a sleeve 12 and elastically deforming its split ring 10 with spherical elements 11. When the nut is wrapped, the spherical surface of the sleeve 12 interacts with the spherical undercut of the nut 2. The ring 10 deforms and its spherical the elements interact with the surfaces of the undercut 8 of the nut 3 and the protrusion 7 of the rod 1. The joint is removed by loosening the nut 2 and the lock nut 3 before moving the split ring 10 to the original non-deformed Bathing position. This ensures quick assembly and disassembly of the joint. 1 hp f-ly, 9 ill. with

Description

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The invention relates to mechanical engineering and can be used to connect parts with misaligned connecting holes.

The purpose of the invention is to expand the technological capabilities of the joint by ensuring quick assembly and disassembly of components, as well as ensuring the mechanization of installation work in a wide field of misalignment of the connecting holes of the parts to be connected.

FIG. 1 shows a general view of the connection of parts; in fig. 2 is a section A-A in FIG. one; in fig. 3 - node I in FIG. 2; in fig. 4 shows the general view of the connection with the spring separator; in fig. 5 is a section BB in FIG. four; in fig. 6 shows a section B-B in FIG. five; Fig: 7 - obsh, i view of the device used in a remote place in the compartment with compacted arrangement of devices; in fig. 8 — node II in FIG. 7; in fig. 9 is a general view of the docking of the compartments with flanges.

The connection includes a threaded rod 1, a nut 2 and a lock nut 3, fasten the lower attachment parts 4 and 5, and a floating centering device. The threaded rod 1 is made with a head b with a conical annular protrusion 7. Inside the hole of the attachment part 5 there is a conical annular recess 8. The threaded rod 1 can be made in one piece with the part 4, or installed in the last thread 9.

The centering device is made in the form of an elastically deforming split ring 10 with spherical elements (balls) 11 mounted on it and sleeves 12 with a flat end face and a spherical outer surface.

The balls And are in contact in the initial position on the one hand, with a tapered annular protrusion 7 of the rod 1, and on the other hand with a flat end face of the sleeve 10. The spherical surface of the sleeve 12 is in contact with the spherical undercut 13, formed on the supporting end of the nut 2.

Structurally, the split ring 10. Can be made with balls 11 strung on it, held by retainers 14 on the ring, and also in the form of a set of balls 11 placed in a separator 15 made in the form of an annular extension spring of a cylindrical profile. The outer diameter of the ring with the balls mounted on it And in the unstressed initial position (in Fig. 1 it is indicated by a dotted line) does not exceed the outer diameter of the nut 2 and the sleeve 12.

The outer diameter of the spherical surface of the sleeve 12 does not exceed the diameter of the nut 2, which ensures the free floating of the sleeve in the nut 2.

The misalignment of the openings of the connected segments is indicated by the sign 6.

The device works as follows.

In the initial position, the nuts 2 and 3 are loosened, which ensures the position of the split ring 10 in the relaxed compressed state, as indicated by the dotted line in FIG. 1. The connected parts are aligned with each other, a threaded rod with nuts placed on it and a floating centering device is inserted into the holes of the parts to be joined 4 and 5. Then, when the nut 2 is tightened, the spherical surface of the sleeve 12 interacts with the spherical undercut 13 of the nut 2, the ring 10 is deformed,

5a, its spherical elements interact with the surfaces of the conical annular recess 8 of the part 5 and the conical annular protrusion 7 of the rod 1 and are installed on these surfaces within the limits of the gap G and the angle l (Fig. 4). As a result, a rigid backlash-free connection of parts 4 and 5 is provided.

When tightening the nut, the axial tightening force is converted to radial due to decomposition of the resultant clamping force when the split ring slides and deforms along the conical protrusion 7 of the rod 1. Then, when the balls 11 interact with the surface of the conical ring undercut 8 (the optimum angle of inclination from the longitudinal axis the rod is 60 °)

0 this force is converted to axial.

The joint is removed by loosening the nuts 2 and 3 before moving the split ring 10 to its original non-deformed position.

5 In FIG. Figure 7 shows the device for use in hollow shtangs 16 of the connecting beam 17, which provides an attachment to the compartment 18 of the instrument cluster 19, in which, due to the compacted arrangement of the instrument blocks, there is no free access to the docking holes.

FIG. 8 discloses a variant of the structural implementation of the rod 16 of the crosspiece 17, in which a backlash-free connection is provided along the entire length of the hollow rod 16.

 At the same time, to ensure operation of the device at a great length or height, intermediate elements in the form of cylindrical sleeves 20 and 21 of a certain length are additionally mounted on the rod 1. This device provides tough

0 radial and face attachment of parts, backlash-free connection of parts, automatic fixation of connected parts without removing the nut, remote maintenance of joints, linear misalignment adjustment by lateral displacement of joined 5

hoists, use of the device as a guide pin, uniform loading of the structure of the joined parts and bolts for multi-bolt connection, one

Efficiency and maintenance of the joint with one-way and two-way access to the holes of the joined parts

Claims (2)

1. Connection of parts containing a threaded rod mounted in the holes of the parts to be joined, a nut screwed on it and a floating centering device in the form of a sleeve with a flat face and a spherical outer surface, the threaded rod provided with an annular protrusion, the attachment part is made with a conical ring groove, and the sleeve is installed under the nut coaxially threaded rod between its annular protrusion and Aa 0 five A conical annular recess, characterized in that, in order to expand technological capabilities, the annular protrusion of the rod is made with a taper, a reverse conicity of the recess, a nut with a spherical undercut on the side of the supporting end, which houses the spherical surface of the sleeve, the centering device is additionally equipped with an elastic deforming split ring with spherical elements mounted between the sleeve and the conical annular protrusion of the rod. 2. A connection according to claim 1, characterized in that the elastic-deforming split ring is made in the form of a separator from an annular extension spring of a cylindrical profile. eleven FIG. 2 7 Fi-g.: 5 5-5 15 Phi2.5 5-6 FIG b 20 1B FIG. 7 9