SU727828A1 - Support mast - Google Patents

Description

I.

The invention relates to the building structures of pneumatic inflatable supports and can be used as lighting or Signal towers, beacons, etc., for example, on space objects (on the Moon, etc.).

A support is known that includes a barrel in the form of a pneumatic inflatable woven sheath of conical shape filled with gas under excessive pressure supported on a foundation.

The disadvantage of this solution is the relatively low reliability of the pneumatic-inflatable support, due to the fact that damage to the shell of the barrel at any point on the surface leads to a loss of excess pressure in the Th1th hole of the barrel due to gas leakage and, as a result, to the collapse of the support.

The closest technical solution to the present invention is an air-casing with a layer-by-layer increase in pressure without connecting individual layers of diaphragms. The support includes pneumatic

a monaduvian shell filled with gas under pressure and an internal hermetic chamber of elastic material 2}.

The disadvantage of this solution is the inability to freely control the pressure between the layers.

The purpose of the invention is to increase the reliability of operation.

Uk..zanna goal is achieved by the fact that

0 in a support comprising a barrel made in the form of a pneumatic inflatable casing filled with gas under excess pressure and an internal hermetic chamber made of elastic material, subsequently connected to the upper part of the support with a flexible cable and provided with a valve opening inwards.

FIG. 1 shows schematically the support, a common vice; in fig. 2 is a section A-A in FIG. one; in fig. 3 — node 1 in FIG. one; in fig. 4 is a view B in FIG. 3

Claims (2)

The support includes a shell-trunk 1 with a working platform 2 located in its upper part 37, a supported foundation 3. Inside the trunk-shell there is an airtight chamber 4 made of an elastic easily stretchable material, with the upper parts of the la shell and chambers interconnected by a supporting cable 5, the internal hermetic chamber has a valve 6 consisting of clamping rings 7, a cover 8 attached (with clamping rings by means of a loop 9 that allows the cover to rotate relative to the pin 10, and also an indri spring (low pressure) compression (or stretching) connecting the clamping rings and the cover, which ensures their pressing at equal pressure of gas inside the barrel-shell and the inner chamber. The inner cavities of the barrel-shell 1 and chamber 4 are filled with gas under the same pressure - excessive in relation to the pressure of the external environment, which is ensured by the placement of valve 6 in the shell of the chamber 4, which has the opportunity to open into the chamber when the pressure between the shells of the barrel and the chamber increases (which occurs during gas inside the barrel-shell 1 during installation) and preventing gas from leaking out of chamber 4 in the event of a decrease in pressure inside the barrel-shell 1 (which occurs when the shell of the barrel is damaged). During the mounting of the support during the injection of the research institute of gas into the internal cavity of the barrel of the shell 1, the increasing pressure inside overcomes the compressive force of the spring 11 and the lid 8 of the valve 6 opens c, while the pressure inside the trunk-shell 1 and the chamber 4 is almost equal. This process of pressure equalization takes place until the end of the mounting of the support (upon reaching the design excess pressure). The pressure inside the barrel 1 and the chamber 4 remains equalized throughout the normal operation of the support. The cable 5 maintains the vertical position of the shell of the chamber 4 inside the trunk-shell 1. In case of damage to the surface of the trunk-shell leading to its depressurization, gas leaks out of its internal cavity until pressure leveling inside the barrel borer with external pressure is achieved, thanks to the tightness of the inner chamber and the valve on its shell; the gas pressure 8 inside the chamber remains initial, i.e., excessive, which leads to an increase in the chamber size (its inflation) until its surface is close to m tightly to the inner surfaces of the shell of the barrel and thus, tightly closed space lesions, and reduced operational form of the support. At the same time uchetka gas from. chamber 4 does not occur due to the tightness of the valve 6, the lid 8 of which is tightly pressed by the spring 11 and the pressure ring 7. the resulting pressure difference inside the chamber 4 (initial overpressure) and decreasing pressure inside the trunk-shell 1 the elastic shell of the chamber 4 is inflated until does not occupy the entire internal volume of the stem-shell 1, which, thus, restores its operational form, and the support does not lose its functional qualities. . For a support with a height of, for example, 20 m and a diameter of 1.0 m with a chamber size of 15 and 0.4 m, respectively, the required value of gas overpressure inside the shell-trunk (when the support is used in the conditions of the Moon) will be D., 4 atm. Thus, the use of the invention will improve the reliability of operation of the pneumonavigation support. Claims; A support comprising a barrel made in the form of a pneumo-inflatable casing filled with gas under excessive pressure and an internal hermetic chamber made of an elastic material, characterized in that, in order to increase the reliability of operation, the internal hermetic chamber is connected to the upper part of the support by a flexible cable and fitted with a valve opening inwards. Sources of information taken into account in the examination 1. Frey O. Pneumatic building structures. ,, Stroyizdat, 1967, p. 63. 2. Pneumatic structures in domestic and foreign construction. Review TsINIS. M., 1973, p. 6, fig. Behind. Aa four . 2 ft