DE1815507B2 - Pressure resistant hose - Google Patents

Description

Individual reinforcement inserts in case of internal pressure load. Winding height angles between 25 and 32 ° are claimed. This task is sent to the reinforcement kit, after which a in the case of the hose mentioned at the outset, a further intermediate textile layer is thereby applied and solves that the turn height angle 'of the reinforcement on another, to the previous two kungseinsätze from inserts to inserts to the outside 5 reinforcement inserts wound in opposite directions and increases in such a way that the turn elevation angle of one turn elevation angle is between 38 and 45 ° Reinforcing inserts arranged and having the following equations suffice the hose sheathed in a manner known per se

P, _b = P _aj and P ₀ = P _ab .

ίο The auxiliary reinforcement insert has a very small

where P _{lb is} the tangential compressive strength of the turn height angle or angles and therefore essentially of the inserts applied in one direction, P _ab borrowed only a tangential compressive strength. The axial compressive strength of the one or more auxiliary reinforcement insert binds the core rubber or the direction applied inserts, P _n the tangential layer of the at most two textile compressive strength of the or those in the opposite direction 15, and is used for concentric inserts applied and P _{aj is} the axial pressure of the two or more reinforcement inserts,
strength of the or the in the opposite direction. The hose according to the invention contains three or

worn inserts, whereby the winding height - more reinforcement inserts, usually in an odd number, angle of the first reinforcement insert between the on the core rubber layer or on the

25 and 32 °. 20 core rubber layer covering a maximum of two textile

The reinforcement inserts are preferably made up of layers arranged, for example, with a Faaus smooth or stranded steel wire or glass-wound auxiliary reinforcement insert with a small fiber. Winding height angle is made of a metal thread

The hose according to the invention is based on or wound from metal wire and serves as a rigid one Realization that a hose is only in the storage layer when the reinforcement strength equilibrium is applied can be located when the kungseinsätze. This becomes the tangential that has been used up to now Compressive strength of the one or more borrowed multilayer, voluminous textile storage ver direction applied reinforcement inserts. The main reinforcement inserts are therefore is arranged with the axial compressive strength of the or in on a smaller diameter, whereby The reinforcement units applied in the opposite direction should be used to replace 3 ° significantly less material for these inserts and vice versa, d. i.e., when the equation is required; at the same time the tensile strength decreases

of stakes too.

Pib ⁼ Ραί ^una " Pn = Pab The auxiliary reinforcement insert increases the pressure

strength and pressure symmetry of the hose in full

are fulfilled, in which P ₀₆ , P _ai , P, _b and P “have the previous dimensions and also fit the meaning given above. uniform stress on the main reinforcement

The basic condition for cooperation.

and the uniform loading of the reinforcement The hose according to the invention has in particular

Kungseinsätze is that the longitudinal relative the advantage that the strength of all reinforcement changes of the stakes, i.e. which can be used almost 100% in the stakes. on Sets occurring longitudinal force components - this way the compressive strength of the hose ten are the same, since the hose ends and thus increased to a previously unknown extent, the zuamauch the inserts are fixed by rigid connections and each has reinforcement inserts, any pressure that occurs in the hose

Due to the relative changes in diameter 45 steadily, the weight and the wall thickness of the tube, which has different diameters, are reduced and its elasticity is increased,
Sets of the pairs of inserts can be used for the single The invention will be described with reference to the

sentences ideal winding height angles / J ₁ and / i _{ä in} drawings explained further,

which ensure that two inserts F i g. 1 schematically shows an embodiment

at any internal pressures in almost identical 50 of the hose according to the invention with 2 + 1 Em stress state, ie evenly spaced sets, partly in longitudinal section,
be spoken and work together. The win- F i g. 2 schematically shows an embodiment

The insert height angle of the inserts is determined by the expansion of the hose according to the invention with 4 + 1 E in the expansion of the offset for the production of the inserts, partly in longitudinal section,
applied thread resulting relative diameter 55 In Fig. 1 the core rubber layer is determined with 1, ser- and length change. the textile storage layer with 2, the first reinforcement

According to a preferred embodiment, kung insert with 3, the rubberized textile layer between the reinforcement insert or pairs still see the reinforcement inserts with 4, the second an auxiliary reinforcement insert is provided, its tan reinforcement insert with 5, the rubberized textile potentials and axial compressive strength the corresponding 60 protective layers with 6, the jacket rubber layer with 7, Compressive strength of the other pairs of reinforcement inserts above the rubberized textile storage layer 2 added. This auxiliary reinforcement insert is arranged under auxiliary reinforcement insert with 8 and the the first reinforcement insert, namely the rubberized textile storage layer immediately above it with this made of metal wire with a win- with 9 referred to meaningfully.

application height angle between 6 'and 5 ° applied, 6 _{5 of} the in F i g. Tube illustrated 2 is made of the auxiliary reinforcing insert are a textile core rubber layer 1, the rubberized fabric layer intermediate layer and to this a approximately layers with the materials 2, the reinforcement inserts 3 a, 3 b reinforcement insert in the same sense wound, a and 5a, 5b, the Textilschichten4a, Ab and 4c between

S ^ 6

see the reinforcement inserts, the auxiliary reinforcement Two rubberized textile protection

Kung insert 8, the text layers arranged above this 2.0 mm

till storage layer 9, the rubberized protective layer 6 outer layer rubber layer 2.0 mm

and the jacket rubber layer 7.

A hose according to the invention is composed of the following 5 The mean diameter of the three inserts and

The following layers are built up: the winding height angles of the inserts are as follows Values:

Core rubber layer 4.0mm _,. , ". ,, ...

Rubberized textile layer 0.5 mm diameter of the hip reinforcement insert,

^{Auxiliary reinforcement insert} 0.9 mm io ^u «~ ^b > ^ cnr> Po ~ ^υ ->'>

Textile layer 0.5 mm diameter of the first reinforcement insert2: es,

First reinforcement insert ^{2.8 mm D} i = ⁹ > ^{06 cm} '»ßi = 30.55 °;

Textile layer 0.5 mm diameter of the second reinforcement insert

Second reinforcement insert 2.8 mm D ₂ = 9.72 cm; / J ₂ - 41.45 °.

For this purpose 2 sheets of drawings

Claims (3)

y2 successively several rubberized textile layer claims: th and metal reinforcement inserts are arranged. According to the information in Fig. 1 of the aforementioned pa- 1. Pressure-resistant hose, preferably tentschrift, are the metal reinforcement inserts of deep-bore hose, in which between a generally inside outwards at increasing angles between a core rubber layer and an outside man- ufacturing 53 and 57 ° are wound in opposite directions. The angle information used in the rubber layer at least two reinforcement inserts and textile layers are provided, each referring to the angle between the consecutive reinforcement winding direction and the longitudinal axis of the hose assembly in a helical manner with different io ches. If the winding height angle is used for the winding height angle, ie the one given by the definition given above, the axis of the hose is the vertical plane in the known hose, the innermost reinforcement and the winding direction included angle insert with a winding height angle of kel, are wound in opposite directions , characterized by 37 ° and the outermost reinforcing insert with a indicates that the winding height angle of 33 ° is wound, that is, the angle of the reinforcing inserts (3, 3 a, 3 b, 5, S a, winding height angle of the metal reinforcement units-5 b) from use to use to the outside in such a way that the known hose increases towards the outside in such a way that the angle of the winding height decreases steadily. Reinforcement inserts the following equations: The one known from the aforementioned patent specification 20 hose meets the requirements placed on it rungeii not in any way. The causes are the Pib = Pci and P _n = P " _b following: The pressure occurring in the hose is the main where P _{16 is} the tangential compressive strength of the unidirectional inserts absorbed by the reinforcement inserts, 25 men; therefore, these inserts are large DEMANDS-P _n ,, the axial compressive strength of the exposed or in the monitoring. The inserts applied in the individual reinforcement in one direction, P _tj the inserts occurring axial and tangential tangential compressive strength of the force component (s) are different due to the different opposite directions applied inserts and P _n , winding diameter,
the axial compressive strength of or under the influence of the various axial opposite direction applied in the inserts 30, and wherein the tangential force components of the stretch Windungshöhenwinkel is the first reinforce- individual reinforcing inserts in different kung insert 25-32 ^C. Dimensions, which changes the relative position of the turns 2. Hose according to claim 1, characterized in that the reinforcement inserts are changed and the rubberized characterizes that under the reinforcement 35 th textile layers between the individual reinforcement sets (3, 3 a, 3 b, S, Sa, S b) one with angled inserts are exposed to such a high level of stress of 6 'to 5 ° helical thread that they are exposed to loads and reliefs due to the formally wound auxiliary reinforcement insert (8), i.e. through the use of metal, which in connection with fatigue stress, in a relatively short time with the First reinforcement insert (3, 3ö) also tear 40 time. if the equations according to claim 1 are satisfied. Even those in the individual reinforcement inserts 3. Hose according to claim 1, characterized ge occurring tangential force components are characterized in that the reinforcement inserts (3, different because the individual reinforcement inserts 3 a, 3 b, 5, 5 a, 5 b) arranged from smooth or stranded on different diameters are.
Made of steel wire or fiberglass. 45 The individual reinforcement insert windings also twist under the action of the various axial and tangential force components in relation to one another, which reduces the stress on the textile and rubber layers between the individual 50 windings increased even further and thus accelerated their tearing. Since the hose ends are clamped, the interaction of the reinforcement inserts is unequal due to the different expansion and ίζί The invention relates to a pressure-resistant 55 dimensions occurring twisting of the individual hose, preferably deep bore hose, impossible with reinforcement insert windings. The mandem between an inner core rubber layer and effective interaction and that in the reinforcer outer jacket rubber layer at least two kung inserts occurring force effects ver reinforcement inserts and textile layers of different sizes have the consequence that the winds are wherein the successive reinforcement gene 60 of the one reinforcement insert far below the inserts helical with different tensile strength, the turns of the other reinforcement-turn-height angles, d. H. which, however, is loaded by the tensile strength on the kung inserts The axis of the tube and the vertical plane are so that the latter tear. However, it is a twisting direction Enclosed angles, torn against the strengthening insert, the load increases are sensibly wrapped. 65 of the other reinforcement inserts suddenly, it happens From US-PS 32 12 528 is a pressure-resistant th new cracks, and the hose tears through.
Known hose, in which between an inner task of the invention was to provide a pressure-resistant To provide core rubber layer and an outer protective layer digen hose, whose one