SU989223A1 - High-pressure flexible hose - Google Patents

Description

(54) HIGH-PRESSURE FLEXIBLE SLEEVE

t

The invention relates to the connections of hydraulic and pneumatic systems and is intended for use in actuators.

Known sleeves containing end fittings, couplings and protective kzhzhuh with clamps yo edge m 1.

Closest to the invention to the technical essence and the achieved result is a flexible hose containing rigidly connected end armada-d tour and couplings and an external spring attached to the couplings 2.

The disadvantage of all known sleeves are high voltages at the points where the end fittings are connected to the groove.

The purpose of the invention is to increase the reliability and degree of protection of the surrounding space of high-pressure hoses.

This goal is achieved. We say that spring 20 is made along the length with an uneven cross section and schagom, the maximum cross section is located along its edges, and the development of spring bG is presented in the form.

parallelogram or trzapesii, two parallel sides of which are represented respectively by conjugate hyperbolas or sinusoids.

The drawing shows the proposed high pressure flexible hose, a general view.

Claims (2)

High pressure flexible soda hose | End fittings 1 with hose 2. End fittings consist of a nipple 3, which is divided into two parts by an annular protrusion. The front part is designed to attach the high pressure hose to the hydraulic equipment. Rubber rings 4 and 5 are designed to provide a compound. The clutch 6 compresses both the steel frame of the sleeve 7, and the outer layer of the sleeve 8, as well as the inner layer of the sleeve 9. On top of the hose is wound a spring 10, which is pressed to the clutch 6 by a clamp 11. The pronin 10 and the clutch 6 have flanges 12 and 13 on which bracket 11, which provides a fixed; The spring attachment lO with the clutch 6. Due to this attachment, the spring 10 becomes, as it were, the throttling of the clutch 6 and the ends of the hose do not experience shear stresses. Spring 1O has an uneven section along its length, the maximum section of couplings is 6 and the minimum is in the middle of hose 2. Parallelism has the form of a parallelogram, in which two opposite sides look like conjugated hyperbolas, and the three and four sides have straight lines. The strap 10 is intended to convert the stresses of the cut-off of the hose 2 at the ends of the nipples 3 to the flexural stress in the middle of the hose 2. In those cases when the hose is bent to one side and full protection of the surrounding space is necessary in case of a breakthrough of the hose 2, the spring 10 The L is made as a trapezoid, bounded on the base side by two sinusoids, and on the sidewalls by straight lines, which ensures, when winding it over one and a half, a full curving surface. For high pressure hoses, where the working bending radius is constant, the springs do not have side shoulders, which, at the time the hose breaks, join into a single pipe and become a pipe. The device works as follows. The nipple 3 is inserted into the apparatus and closed. With bends (the bending angle varies from 0 to 180), part of the hose 2 with a smaller bend radius works in compression, and with a large radius in tension. The clutch 6 together with the ends of the spring Yu presses on the outer layer of the arm of the wA 8, and since the area of pressure from the spring id is large, the external compression of the spring 1O goes into compression of the outer layer, and the bending radius is not constant: first decreases, then grows. This is because the spring 10 with an uneven cross section eliminates the zone of increased stress at the cut-off of the hose, and the maximum deformation is mixed into the middle part of the sleeve, which is more elastic and deforms with no flap. Thus, the spring, uneven in cross-section and pitch, makes it possible to redistribute loads along the length of the hose. Claim 1. High-pressure flexible hose that holds rigidly connected end fittings and couplings and an external spring attached to the couplings, characterized in that, in order to increase reliability, the spring is made in length with an uneven cross-section and pitch, with a maximum cross-section spring 2. It has a sleeve according to claim 1, of which there is a spring sweep in the form of a parallelogram, two opposite sides of which are represented by conjugate hyperbolas. 3. A hose according to Claim 1, characterized in that the spring sweep is made in the form of a trapezoid, the two parallel sides of which are represented by adjoining sinusoids. Sources of information taken into account in the examination 1. USSR author's certificate № 756128, cl. 33/22, 1978. 2. USSR Author's Certificate No. 39О324, cl. P16L 33 / 2O, 1970.