RU2576408C2 - Weight-gripping ventilation reinforcing flange - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: weight-gripping ventilating reinforcing flange is made from metal by method of casting, has four fixator pins at end surfaces of the flange, two longitudinal grooves both on the outer and inner side surfaces of the flange, and four transverse grooves on the outer side surface of the flange. Side through holes are made in the flange: two non-threaded holes for installation of one long bolt with a nut at the end via a flange and four threaded holes for installation of bolts outside the flange.

EFFECT: increased operational characteristics of a ventilation cartridge by working strength and stiffness, increased reliability of flange fixation with a polymer material, from which the ventilation cartridge is made.

4 cl, 4 dwg

Description

The invention relates to land construction, namely, the arrangement of exhaust ventilation shafts, and can be used to reinforce the load gripping rim of the load gripping ventilation filter sleeve, which is installed in the ventilation duct to remove ice formed from condensate rising from below (moist, moist air), snow carried by the wind and growing on the walls of the ventilation duct, as well as foreign objects falling into the ventilation duct from above. As the sleeve is filled with a heavy cork made of ice, snow or debris, the weight of the sleeve increases, as a result of which its load-bearing rim experiences significant loads. And since the housing of the load-gripping ventilation filter sleeve, including the load-gripping rim, is made of polymer material, it is necessary to strengthen their bearing capacity.

Known metal reinforcing flange, mounted on the outside of the porcelain insulating sleeve, inside of which there is a current-carrying rod (see patent RU 2282910, publ. 27.08.2007, IPC H01B 17/26). The hermetic bushing formed in this way has increased reliability and service life. However, in relation to reinforcing the load-gripping rim of the ventilation sleeve, it is more optimal to fix the reinforcing flange not outside the housing of the ventilation sleeve, but inside the sleeve body (inside the material from which it is made).

It is known to reinforce a ventilation unit made of foam concrete in the form of a rectangular rectangular hollow body with through vertical holes (see patent RU 100534, published on December 20, 2010, IPC E04F 17/04). The known ventilation unit is reinforced with fiber, for example polyamide, and may have a vertically located reinforcing cage made of metal or non-metallic composite reinforcement.

It is known to reinforce an air duct containing a wall made in the form of successively arranged vapor-tight, heat-insulating, heat-reflecting and reinforcing layers (see patent RU 30943, publ. 10.07.2003, IPC F24F 13/00). The reinforcing layers are made of a solid layer of plastic between the layers formed by welding the layers together. In this case, at least one reinforcing layer is additionally provided with a reinforcing mesh made of metal, fiberglass or a polymer composition.

In known technical solutions, the use of reinforcement achieves additional product strength. However, the known solutions for realizing the purpose of the proposed invention do not have sufficient strength.

The objective of the invention is the creation of a reinforcing flange mounted in the load-bearing rim of the ventilation filter sleeve, made of frost-resistant polymer material and placed inside a metal ventilation sleeve, which is rigidly fixed inside the channel of the ventilation shaft.

The technical result achieved by using the present invention is to increase operational characteristics in terms of working strength and stiffness, increase the reliability of adhesion to the material of the reinforced product (namely, the polymer from which the ventilation sleeve is made).

The achievement of the technical result is ensured by the fact that the load-bearing ventilation reinforcing flange is made of metal by casting and has two longitudinal grooves on the outer and inner side surfaces of the flange housing, four transverse grooves on the outer side surface of the flange housing, eight locking pins fastened four in each both end surfaces of the flange housing. Side through holes are made in the flange: two threaded holes for installing through the flange one long bolt with a nut at the end and four threaded holes for installing bolts on the outside of the flange.

Due to fabrication by metal casting followed by galvanizing, in contrast to the manufacture of reinforcement in the form of a reinforcing cage or reinforcing mesh, the proposed reinforcing flange obtains operational working qualities that provide the strength and stiffness required to withstand the mechanical loads that the load-bearing rim is subjected to when filling the load-holding ventilation filtering sleeve cork from ice, snow and debris and when removing this sleeve from the duct of the ventilation shaft.

The implementation on the side surfaces of the housing of the proposed flange of four longitudinal and four transverse grooves serves to improve its longitudinal and transverse adhesion to the polymeric material by filling these grooves with polymeric material in the process of manufacturing a ventilation sleeve with a load gripping rim. The specified number of grooves (four longitudinal and transverse) is necessary and sufficient due to their uniform and symmetrical location both on the outer and inner surfaces of the flange.

The axial adhesion and the strength and stiffness of the finished product (namely, the load-gripping ventilation filter cartridge) are improved by locking pins, which are also necessary to center the flange in the mold seats during the manufacturing (casting) of the ventilation cartridge.

The proposed invention is presented in the drawings, which depict:

figure 1 is a top view of the reinforcing flange;

figure 2 - installation of a reinforcing flange on a load-gripping ventilation filter sleeve (section on an axonometric image);

figure 3 - position of the reinforcing flange inside the load-gripping rim of the ventilation sleeve (section on an axonometric image);

figure 4 - reinforcing flange assembly with bolts (axonometric image).

The load-bearing ventilation reinforcing flange can be made with a round or rectangular cross-sectional shape. Figure 1 shows a variant of a round reinforcing flange in plan. The proposed flange consists of a galvanized metal body 1, made by casting in a mold. On the outer side surface of the housing 1, closer to the ends, longitudinal grooves 2, in this case annular, are grooved. Similarly, on the inner side surface of the housing 1, longitudinal annular grooves are grooved 3. Four transverse grooves 4 are machined along the height of the outer lateral surface of the housing 1. Four fixation pins 5, which can be bolts screwed into the ends of the housing, are fixed on both end surfaces of the housing 1 1, followed by trimming the bolt caps. In the wall of the housing 1, lateral through holes are made by drilling, of which two holes 6 are drilled without thread along the axis of symmetry strictly opposite to each other, and four holes 7 are drilled with thread on both sides relative to the axis of the holes 6 at approximately angles of 35-40 °. This limitation of the angular location of the holes 7, spaced on the sides of the axis of symmetry of the threaded holes 6, is due to the fact that four transverse grooves 4 are machined on the sides of the axis of symmetry perpendicular to the specified along the entire height of the flange body 1. A closer arrangement of the holes 6 to the holes 7 is undesirable, since it can create difficulties at the stage of engaging the flexible steel sub-rails for the bolts screwed into the holes 7 outside the load-carrying rim of the ventilation sleeve.

Installing and operating the load gripping ventilation reinforcing flange as follows.

Previously, before installing the reinforcing flange in the mold in the holes 6 and 7, available in the housing 1, install metal studs. At the same time, one long pin is hammered into the threaded holes 6 with a hammer, and the metal studs are screwed into the holes 7 with a screwdriver.

The flange body 1 thus prepared is fixed with fixing pins 5 in the sockets located in the upper end of the mold, which is filled with frost-resistant polymer material in the next stage of work to obtain a load-holding ventilation filter sleeve (Fig. 2). During the pouring process, the longitudinal grooves 2 and 3 and the transverse grooves 4 are filled with the material to be poured, reinforcing the longitudinal and transverse fixation of the flange housing 1 inside the load gripping rim of the cast ventilation sleeve (Fig. 3).

Then, the metal studs are removed, freeing holes 6 and 7. Then, a long bolt is inserted through the load-gripping rim of the ventilation sleeve through two holes 6 and it is fixed relative to the load-gripping rim by pressing the nut at the end of this bolt. Bolts with an external thread are screwed into four holes 7 outside the load gripping rim of the ventilation sleeve.

As a result of the described assembly, the load-gripping ventilation filter sleeve receives, on the one hand, a reinforced and strong load-gripping rim capable of withstanding significant loads, and, on the other hand, it is provided with a simple and reliable mechanism for its capture and removal from the duct of the ventilation shaft. To capture the ventilation sleeve, you can hook the flexible steel sub-rails onto the four outer bolts, or you can pull the long bolt through the load-bearing rim threaded through the load-bearing rim, moving it left and right. In various specific cases, both of these methods (using four external bolts or one through long bolt) can successfully interact when pulling the ventilation sleeve up from the channel of the ventilation shaft.

Claims (4)

1. A gripping ventilation reinforcing flange made of metal by casting, having locking pins on the end surfaces, and longitudinal grooves, transverse grooves and through holes on the side surfaces, of which two threadless holes are made opposite the each other along the symmetry axis of the flange, and four threaded holes are made on the sides of the threaded holes. 2. The load-gripping ventilation reinforcing flange according to claim 1, characterized in that four fixing pins are fixed to the end surfaces of the flange. 3. The load-gripping ventilation reinforcing flange according to claim 1, characterized in that on the outer and inner side surfaces of the flange, two longitudinal grooves are made located near the end surfaces of the flange. 4. The load-bearing ventilation reinforcing flange according to claim 1, characterized in that four transverse grooves are made on the outer side surface to the entire height of the flange.

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