SU739304A1 - Coupling of hose to nippel - Google Patents

Description

(54) HOSE CONNECTION WITH NIPPLE

one

The invention relates to mechanical engineering and can be applied to fasten and seal the ends of the hoses when connecting them to each other or to the reinforcement.

Hose-to-nipple connections are known by crimping the hose with a wire, in which the wire winding is fixed after twisting the hose / repeated twisting of its ends, which leads to the appearance of invisible tears in the places of wire deformation, due to which the hose with the nipple 1 breaks down .

It is also known to connect the hose to the nipple by means of a spiral crimping element enclosing the hose, made of elastic tape and secured against longitudinal movement using straps connected to the nipple and located between the outer surface of the hose and the crimping element 2.

However, the placement of the slats between the outer surface of the hose and the crimping element does not ensure that the latter fits snugly to the outer surface of the hose along its entire circumference, which leads to a violation of the tightness of the known joint.

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

In order to achieve this goal, the hose is connected to the nipple by means of a spiral crimping element fixed with straps connected to the nipple and located between the outer surface of the hose and the crimping element, the spiral crimping element is made of wire in the form of a dense screw winding bent from opposite ends, rigidly fixed on the slats. Part of the winding can be placed between the slats and the outer surface of the hose. In order to ensure reliable fastening of the crimping element, each of the slats has a figured transverse corrugation, and the ends of the wire screw winding are made to bend, for example, in the form of hooks, one of which is inserted into the figured corrugation, and the other is fixed on the plate.

FIG. 1 shows the proposed joint (winding is made from the top of the bar), a section; in fig. 2 - the same, but the winding part is made between the planks and the outer surface of the hose, a slit; in fig. The same top view.

The ribbed or smooth section of the nipple 2 is inserted into the end of the hose 3. On the nipple on the side of the threaded part 4 there is a washer 5 in contact with the end face of the hexagon b and nesush, and the diametrically spaced slots 7 are included in the longitudinal grooves of the hexagon 6. The slats having transversely shaped the corrugations 8 and the bent ends 9 are located along the outer surface of the hose 3 and together with it are clamped by the spiral crimping element 10 in the form of a helical winding made of wire. The ends of the element 10 are bent in the form of hooks G1, moreover, they are wound into a figured corrugation 8, and the other is behind the bent end 9 of one of the bars 7. A portion of the winding can be placed between the bars and the outer surface of the hose

(Fig. 2):

The hose is connected to the nipple as follows.

A washer 5 is placed on the nipple on the side of the threaded part 4 before contact with the hexagon 6, into the grooves of which strips 7 are inserted, after which the nipple is firmly fixed to the rotating mandrel 12 by the threaded part 12. Then put the hose 3 on the ribbed nipple portion 1 of the nipple until it stops at the end of the hexahedron 6. After that, in the figured corrugation 8 of one of the strips 7, the end of the wire is bent in the form of a hook 11 and rotated, the mandrels 12 are screw-wound with the corresponding tension, for a certain length. Then, the last winding turns are clamped with the help of the bent ends 9 of the bars 7, after which the wire is bent, leaving the end bent in the shape of a hook 11, and the threaded mandrel 12 is disconnected.

The connection of the hose with the nipple according to another variant, after the nipple has been installed in the hexagon, is carried out as follows.

In the figured corrugation 8, the bars 7, the end of the wire, bent by 180 °, and several turns of winding over the bars 7 are performed by rotating the mandrel 12 with the corresponding tension. Then the bars are bent at an angle

90 ° to the axis of the nipple 2 and winding directly on the outer surface of the hose 3. The number of turns of the middle part of the winding is chosen depending on the operating pressure of the joint and the diameter

hose. Thereafter, the slats 7 are pressed against the middle portion of the winding and several turns are performed again over the slats. Then the ends of 9 strips are folded over the last turns of the winding, and the remaining part of the wire is also bent 180 ° beyond the bent end 9

the strips 7, cut it off, leaving the bent end of the winding. , ,

Also, two sleeves are connected to a nipple having seating surfaces for the ends of the sleeves.

Claims (3)

1. Connecting the hose to the nipple by means of a spiral crimp element fixed by means of straps connected to the nipple and located between the hose surface and the crimp element, characterized in that, in order to increase its reliability, the spiral crimp element is made of a prorolka in the form of a dense screw winding, bent from opposite ends, rigidly fixed on the slats. 2. Connecting the hose with the nipple according to claim 1, characterized in that a portion of the winding is placed between the slats and the outer surface of the hose. 3. Connecting hose with nipple, on PP. 1 and 2, characterized in that each bar is made with a transverse shaped corrugation, and the ends of the wire screw winding are bent, one of which is wound into a figured corrugation, and the other is fixed on the bar. Sources of information taken into account during the examination 1. Patent of Germany No. 1214490, cl. 47 f 17/01, publ. 1966. 2. US patent No. 3174777, CL. 285-252, pub. 1965. 7 S Yu