SU1536147A1 - Joint of high-pressure hoses - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in the mining, automotive, transport, road construction, agricultural and other industries. The purpose of the invention is to increase the reliability of the connection. In the housing 1, two rows of radial holes are made, with the holes of one row with respect to the holes of the other row being shifted by 45 °, i.e. staggered in order. In the holes 7, the crimping elements are installed in the form of screws 8, with the protrusion 3 of the nipple 2 being located between the radial holes 7. The screws 8 are made with a spherical surface. The outer end of the screw 8 has a head of a slotted design with pegs 10 for tightening it with the help of torque tools. One end of the nipple 2 is cylindrical with a thread, and the other is tapered, on which the protrusion 3 is located. The inner part of the body 1 at the location of the sleeve is provided with a left-hand thread, and the surface of the nipple 2 at this place is of the opposite direction. Such a combination of threads eliminates the pushing out of the sleeve 4 from the joint during assembly. 2 hp f-ly, 8 ill.

Description

(21) 4396173 / 29-29

(22) 02.18.88

(46) 01/15/90. Bul № 2

(71) Special Design and Technology Bureau Glavmosinzhstro at the Moscow City Executive Committee and the Moscow Mining Institute

(72) S.M. Grigoriev, A.N. Semenov, S.N. Yudin, L.I. Kantovich, V.N. Kharchenko and S.A. Vasin

(53) 621.643 (088.8)

(56) USSR Author's Certificate No. 985544, cl. F 16 L 33/22, 1981.

(54) CONNECTING HIGH-PRESSURE HOSES

(57) The invention relates to mechanical engineering and can be used.

in the mining, automotive, transport, road construction, agricultural and other industries. The purpose of the invention is to increase the reliability of the connection. Two rows of radial holes are made in housing 1, with the holes of one row relative to the holes of the other row mixed by 45P, i.e. staggered in order. In the holes 7, the crimping elements are installed in the form of screws 8, with the protrusion 3 of the nipple 2 being located between the radial holes 7. The screws 8 are made with a spherical surface. The outer end of the screw 8 has a head of a slotted design with pegs for tightening it using torque tools. One end of the nipple 2 is cylindrical with a thread, the other is tapered, and there is a protrusion 3 on it. The inner part of the body 1 at the location of the sleeve is provided with a left-hand thread, and the surface of the nipple 2 at this place is the thread of the opposite direction. Such a combination of threads eliminates the pushing out of the sleeve 4 from the joint during assembly. 2 hp f-ly, 8 ill.

(L

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And L g 1st; H

figure 1

ate

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4 1

The invention relates to mechanical engineering), namely to connections of high pressure hoses (HPH), and can be used in the mining, automotive, transport, road construction, agricultural and other industries.

The purpose of the invention is to improve the reliability of the RVD connection by creating a standardized distribution of stresses in the compression zones of the sleeve while ensuring a collapsible design.

FIG. 1 shows a complete hose assembly; in fig. 2 is a section A-A in FIG. 1, in FIG. 3 is a section BB in FIG. one; in fig. 4 - section bb nafig. 1J to FIG. 5, a cross section of FIG. 1J in FIG. 6 - connection of the assembly assembled with structurally crimped elements perpendicularly installed in a staggered order; in fig. 7 is the same, with elastic inserts installed by them with their inserts} in FIG. 8 - screws.

The RVD connection consists of a housing 1, a nipple 2 with a protrusion 3, a high pressure hose 4 in a metal braid 5 and a cap nut 6.

In the housing 1, two rows of radial holes 7 are made, with the holes of one row with respect to the holes of the other row being shifted by 45 °, i.e. staggered in order. In the holes 7, crimping elements are installed, for example, in the form of screws 8, with the protrusion 3 of the nipple 2 being between the radial holes 7.

Screws for more reliable fixation of the sleeve are made with a spherical surface 9 (Fig. 6 and 7). The outer end of the screw 8 has a slotted head c. caulk 10 to tighten it using dynamic means

For convenience, the nipple of the filling of the sleeve 4 one end is cylindrical, threaded and the other conical, on the latter there is a protrusion 3

The inner part of the housing 1 at the location of the sleeve is provided with a left-handed thread, and the surface of the nipple 2 at this location is threaded in the opposite direction. Such a combination of threads allows the assembly of the joint to exclude pushing the sleeve 4 out of the joint.

For convenient and efficient screwing of housing 1 onto sleeve 4 and nipple 5

five

0

-

Q

Q

35

40 45

50 55

2 in the sleeve are flats 11 and 12. Screwing the nipple 2 into the housing 1 is limited by the rim 13 located on the nipple. Connecting the HPH to the hydraulic drive units is carried out by the cap nut 16.

To ensure the perpendicularity of the holes 7 to the conical surface 2 in the housing 1, a flat face 14 is cut, located parallel to the conical surface forming the nipple 2.

Connection RVD mounted as follows.

The housing 1 is screwed with a threaded part onto the sleeve 4 with a wrench with the help of the flats 11. With the wrench 12, the nipple 2 with the cap nut 6 placed on it is screwed in to the shoulder (stop) 13, while the protrusion 3 clamps the sleeve 4 and positions between two rows of radial holes 7, into which the reduction elements 8 (screws) are subsequently screwed. Then they are tightened and thus the sleeve is clamped with a normalized force, which allows the RVD connection to be kept securely in working condition. The presence of elastic elements 13 makes it possible to eliminate the redaction of the metal braid 5 of the sleeve 4 and to reduce the stress concentration in the joint.

Claims (2)

1. Connection of high pressure hoses, including a housing with means of crimping sleeves located in a checkerboard pattern, on both sides with respect to a protrusion along the tapered surface of the nipple installed by means of a threaded connection in the housing, in order to increase the reliability of the connection of hoses , the crimping means are made in the form of screws and threaded holes in the body, perpendicular to the forming cone surface of the nipple, while the screw end is spherical, and in the body in opposite directions relative to the cutting thread on the conical surface of the nipple. 2. The connection according to claim 1, characterized in that plate elements are installed under the end of the screws. 515361476 h L ГСп0 DYNNIA on item 1, about t l and-nical ledge located on its It is likely that a coaxial is made on the spherical surface of the screw, Aa Schig.1 gd 5 nothing axes, at 8 Fig Fig.Z Editor A. Ogar Compiled by V.Krasnopolsky Tehred M. Khodanich Proofreader M. Kucher va Order 97 Circulation 558 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-: 35, Raushsk nab., H / Z Production and publishing plant Patent, Uzhgorod, st. Gagarin, 101 fui.9 Subscription