SU1732028A1 - Part-shaft threaded joint fastener - Google Patents

Abstract

Usage: in the nodes fixing the sleeves on the shaft. The locking of the threaded joint flew 2 and the shaft 1 is achieved by fitting an elastic ring 3 of elastic material between the collar of the shaft 1 and the part 2. In this case, the ring 3 is compressed by a clip in the form of two flanges 4,5. The invention makes it possible to expand the use of such units in the technique by allowing installation of part 2 on any part along the length of shaft 1, as well as substantially reducing the material consumption of the unit by changing the shape and reducing the mass of flanges 4.5 and replacing bolts and nuts with wire segments. 1 il.

Description

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The invention relates to mechanical engineering (instrument making), namely, to designs of units for securing parts on a shaft.

A device for mounting on the shaft of the pump wheel is known.

The disadvantages of the known device are the limited applicability of the assembly — only for cases where the part (wheel) is mounted on the shaft end, the consumption of materials is relatively high, and bolts and nuts are used.

The aim of the invention is to expand the applicability of the assembly by allowing the part to be installed at any location along the shaft and reducing material consumption.

The use of the invention makes it possible to reduce the cost of a node, to widely apply it in technology, to obtain a significant economic effect.

The drawing shows the construction of the assembly (the twisting of the wire is shown not tight to the flanges, not tightened).

The proposed knot contains shaft 1, part 2 fixed on it (gear, flywheel, etc.). Part 2 is equipped with a central through-threaded hole and screwed onto the threaded shaft section 1. located near its Gypia. With the ego between the collar of shaft 1 and up to the tip 2, there is an elastic ring 3 made of e / pglichnogo material, covered by crimping the holder in the form of two coaxially mounted flanges 4 and 5. Flanges 4 and 5 are made L-shaped in cross section and in their ridges x 6, circumferentially coaxially made through holes for fasteners 9, and the interconverted surfaces of flanges 4 and 5 and rings 3 are made with bevels 8, while landing shaft 7 is made on shaft 1 and part 2 to install flanges 4 and 5, moreover, the diameter of the C-cove 7 is smaller than the outer diameter and elastic rings 3 in the free state and the outer diameter of the shaft 1 near the shoulder. The width of the fittings 7 of shaft 1 and part 2 is less than the seating surfaces of flanges 4 and 5 and their peripheral ends contact with mutually reversed end surfaces of shaft 1 and part 2. The fastening elements 9 are made in the form of wire segments whose ends on the peripheral surface of the flanges 4 and 5 twisted into a twist 10.

The node works as follows.

After tightening the threaded joint, the material of the elastic ring 3 is in the compressed (elastically deformed) state and presses on the end of part 2, shoulder of shaft 1, bevels of flanges 4 and 5. This ensures fixation (locking) of part 2 on shaft 1. Herewith part 2 or shaft 1 can transmit a working torque that coincides in direction with screwing up part 2, and idling in the opposite direction. Reliability of locking part 2 is ensured by the elasticity of the material of the ring 3, the large area of contact of the ring 3 with the flanges 4 and 5, as well as fixing flanges 4 and 5 o cutting wire 9, torsions 10 To dismantle removed first wire 9 of the flanges 4 and 5, and then screwed with the shaft member 2 1.

Claims (1)

Invention Formula The assembly for fastening the part on the thread, to the shaft, contains an elastic ring made of elastic material between the part and the shaft collar and a ring that surrounds the ring, consisting of two coaxially mounted flanges with evenly spaced holes for fasteners on the shaft and the parts are provided with mounting flanges for fitting the flanges, the diameter of the ribs is smaller than the outer diameter of the elastic ring in the free state, and the interconversion surfaces of the flanges and the elastic ring are made with bevels. and with the aim of expanding the operational functions by allowing the part to be installed at any part along the shaft and reducing the metal content of the joint, the flanges are L-shaped in cross section, the threaded hole in the part is made through, the juice fitting on the shaft is formed by an annular groove, while its diameter is less than the outer diameter of the shaft, the width of the fitting details and the shaft is less than the width of the corresponding flange seating surfaces, the ends of the latter are in contact with imo- obrascheinymi thereto and end faces of the shaft parts and, adjoining the latter with setting of the bench, and that the fastening elements are designed as segments of twisted wires from the peripheral surface of the flange ends.