SU1285253A1 - Method of joining low-pressure hoses with valves - Google Patents

Abstract

The invention relates to pneumatic and hydraulic systems and can be used to seal fittings in a low pressure hose. The purpose of the invention is to increase the reliability of the connection of the sleeves to the reinforcement. The method of connecting low pressure hoses with fittings involves inserting the shank of the fitting of the fitting into the sleeve and fixing the latter on the shank of the fitting with fasteners. With the introduction of the valve stem into the inside of the hose, the last working fluid is fed under nominal overpressure, and when the hose is fixed on the valve stem, the pressure inside the hose is reduced. If there is a corresponding, its equipment, before fixing the sleeve on the armature stem, creates a vacuum inside the sleeve. 1 hp f-ly, 2 ill.

Description

Yu

00

ate

N3

sd

00

ten

The invention relates to pneumatic and hydraulic systems and can be used to seal fittings in a low pressure hose.

The purpose of the invention is to increase the reliability of the connection of the sleeves to the reinforcement.

FIG. 1 shows the connection of the hose with the choke when compressed air is fed into the hose through the choke; in fig. 2 - the same, with air supply through the free end, sleeves.

The design of the device allowing the connection includes a low pressure rubber-fabric sleeve 1, a rigid metal fitting 2 with a shank, a fastening element 3 in the form of a wire and a plug 4.

The method of connecting the sleeve to the choke can be carried out in two ways.

In the first variant of the connection of the sleeve with the union, the end of the sleeve 1 20 opposite to that connected to the fitting 2 sets the plug 4 or bends the end of the sleeve and fixes it in this position with a wire. Then, fitting 2 is connected to the compressed air line, the tapered portion of the shank of the fitting 15 is supplied.

side opposite the shank, install the plug 4, attach the end of the sleeve 1, the opposite connected to the fitting 2, to the compressed air line. Then, the conical part of the shank of the fitting 2 is guided to the opening of the sleeve 1 and the fitting is pressed to the sleeve. Fixing the fitting 2 and the sleeve 1 in this position, the working fluid is fed into the sleeve under nominal overpressure. In this case, the diameter of the sleeve increases, and the shank of the fitting 2 freely enters the opening of the sleeve 1. After inserting the fitting shank into the sleeve, the excess pressure in the sleeve is reduced, the sleeve crimps the fitting shank and is fixed on it with wire 3.

With the appropriate equipment, before fixing the sleeve on the nozzle stem, a vacuum is created inside the sleeve.

Claims (2)

1. A method of connecting low pressure hoses with reinforcement, including inserting the reinforcement shank inside the sleeve and fixing the latter on the tail with fasteners, characterized in that 2 to the opening of the sleeve 1 and press down 25 in order to increase the reliability of the connection fitting to the sleeve. Fixing the fitting and the sleeve in this position, the working fluid is fed into the sleeve under nominal overpressure. At the same time, the diameter of the sleeve increases and the shank of the fitting 2 freely enters the opening of the sleeve 1. After inserting the shank of the fitting into the sleeve, the excess pressure in the sleeve is reduced, the sleeve compresses the shank of the fitting and is fixed on it with wire 3. In the second variant of the connection of the sleeve with the union into the opening of the union 2 with thirty before inserting the reinforcement stem into the sleeve, the sleeves with reinforcement are muffled or bent with fixation in this position, the working fluid is fed into the sleeve under nominal excess pressure and the reinforcement shank is inserted, after which the pressure inside the sleeve is reduced and the latter is fixed. 2. A method according to claim 1, characterized in that a vacuum is created inside the sleeve before fixing the sleeve on the shank of the reinforcement. side opposite the shank, install the plug 4, attach the end of the sleeve 1, the opposite connected to the fitting 2, to the compressed air line. Then, the conical part of the shank of the fitting 2 is guided to the opening of the sleeve 1 and the fitting is pressed to the sleeve. Fixing the fitting 2 and the sleeve 1 in this position, the working fluid is fed into the sleeve under nominal overpressure. In this case, the diameter of the sleeve increases, and the shank of the fitting 2 freely enters the opening of the sleeve 1. After inserting the fitting shank into the sleeve, the excess pressure in the sleeve is reduced, the sleeve crimps the fitting shank and is fixed on it with wire 3. With the appropriate equipment, before fixing the sleeve on the nozzle stem, a vacuum is created inside the sleeve. Invention Formula 1. A method of connecting low pressure hoses with reinforcement, including inserting the reinforcement shank inside the sleeve and fixing the latter on the tail with fasteners, characterized in that the purpose of increasing the reliability of the connection before inserting the reinforcement stem into the sleeve, the sleeves with reinforcement are muffled or bent with fixation in this position, the working fluid is fed into the sleeve under nominal excess pressure and the reinforcement shank is inserted, after which the pressure inside the sleeve is reduced and the latter is fixed. 2. A method according to claim 1, characterized in that a vacuum is created inside the sleeve before fixing the sleeve on the shank of the reinforcement. E 0 From nHe§fio / ia2ucmpa /} u H 2. ./J 1 1 From pne8mo-nazucmpa / iu.