RU2697349C2 - Combined composite energy-efficient bracket for suspended facade systems - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to the field of industrial and civil construction, namely to brackets used in the ventilated facing of buildings and structures, suspended both in construction of new buildings, and in reconstruction of previously operated structures. Bracket for attachment of suspended panels of building facings contains L-shaped part and has stiffening ribs, at that it is made by method of cold forming from fire-resistant composite multilayer material with thickness of not less than 1 mm, produced by extrusion and rolling or pressing, wherein face and rear surface of composite material is zinc-plated or corrosion-resistant steel with thickness of 0.1–0.5 mm, wherein inner component of composite material is core of polymer compound based on high-pressure polyethylene, and the polymer compound contains 10 to 90 % of fire retardants from the total amount of components, wherein the front and rear surfaces of the composite material are connected to the polymer compound by a thermopolymer adhesive, wherein the bracket has an amplifier made from galvanized or corrosion-resistant steel.

EFFECT: increased carrying capacity of the bracket, low thermal conductivity and reduced metal consumption.

5 cl, 4 dwg

Description

The invention relates to the field of industrial and civil construction, namely to the brackets used in the construction of ventilated cladding of buildings and structures, hung both in the construction of new buildings and in the reconstruction of previously operated structures.

The indicated brackets must withstand both static and dynamic loads. Therefore, the most important characteristics of the brackets are the bearing capacity and the ability to change the length.

A double bracket is known for mounting the hinged panel of the building cladding, made in the form of a stamped corner profile, on the rack of which holes are made for fastening to the wall, and on the shelf there are stiffening arcs in cross section located along its longitudinal edges, turning into stiffening ribs of the rack. The bracket has a sliding structure and consists of a first part in the form of a fixed support bracket and a second part in the form of a movable supporting bracket, while both parts are interconnected using fasteners with the possibility of movement relative to each other, while the fixed support bracket is made in the form of a corner profile, on the stand of which in the center an additional arc of stiffening is formed in cross section, turning into a stiffener of the rack, while the stand of the fixed support bracket The yarn has at least two elongated through mounting holes for mounting the bracket to the wall, while elongated holes located between the stiffeners are made in the shelf of the fixed support bracket from the side of the free end, the movable support bracket is a metal plate movable relative to the shelf of the fixed support bracket, on which the mounting holes are made, through holes with flanging, similar to the stiffening ribs of the shelf of the fixed bracket, between which bent shelf tongues of the plate are located that serve to install on one side the elements for fastening the hinged facing plate (front cladding), while at least two square-shaped grooves are made between the through holes with a flange for fastening the shelf of the fixed support bracket (patent RU83528, IPC E04F 13/08, publ. June 10, 2009).

Known bracket has the following disadvantages:

- increased metal consumption of the bracket made of galvanized steel;

- the increased weight of the subsystem is a consequence of the use of a metal bracket;

- high thermal conductivity of the subsystem using this bracket made of galvanized steel;

- high production costs.

A known bracket for mounting the hinged panel of the building cladding, made in the form of a stamped corner profile, on the rack of which a hole for fixing to the wall is formed, and on the shelf - stiffening ribs located along its longitudinal edges, turning into stiffening ribs of the rack. The bracket has a sliding structure for adjusting the width of the gap and ensuring the vertical surface of the cladding and consists of two parts - one fixed support bracket of the corner profile, fixed to the wall with at least one fastening element, and one movable supporting bracket, interconnected with using fasteners, while the shelf of the fixed support bracket, to which the movable supporting bracket is attached, has a cutout located on the side of the free end, located between with stiffening ribs, the movable support bracket is made in the form of a metal plate with at least two square grooves for fastening the shelf of the fixed support bracket, and two through slots with shaped protrusions located on the side of the free end of the plate and used to install elements on one side for fastening the hinged facing plate, on the plate are made, located along its longitudinal edges, bends in the form of a slide, through which the plate is attached to the corresponding bracket ynu, with both brackets being movable relative to each other (Patent RU40066, IPC E04F 13/08, publ. August 27, 2004). Taken as a prototype.

The disadvantage of the known bracket:

 - increased metal consumption of the bracket made of galvanized steel;

- bends in the form of a slide at the moving part of the bracket are a complication of the design and production technology, as a result of increased metal consumption;

- the increased weight of the subsystem is a consequence of the use of a metal bracket;

- high thermal conductivity of the subsystem using this bracket made of galvanized steel;

- high production costs.

The objective of the invention is to provide a bracket for curtain wall systems with high performance.

The technical result manifested when using the invention is an increased bearing capacity of the bracket, low thermal conductivity and a decrease in metal consumption.

The problem is solved, and the technical result is achieved by the bracket for mounting the hinged panels of the cladding of the building, containing an L-shaped part and having stiffeners. In contrast to the prototype, the bracket is made by cold stamping of a fire-resistant composite multilayer material, at least 1 mm thick, made by extrusion and rolling or pressing, while the front and back surfaces of the composite material are galvanized or corrosion-resistant steel with a thickness of 0.1-0.5 mm, while the inner component of the composite material is the core of the polymer compound based on high-pressure polyethylene, and the composition of the polymer compound includes from 10 to 90% antip iren from the total number of components, the front and back surfaces of the composite material are connected to the polymer compound with thermopolymer adhesive, while the bracket has an amplifier made of galvanized or corrosion-resistant steel.

According to the invention, in particular cases:

- the bracket is made in the form of a stamped corner profile and has a sliding structure consisting of two parts - L-shaped stationary and movable, interconnected by means of fasteners, the stationary and movable parts being movable relative to each other, while on the rack the bracket is provided with a hole for attaching to the wall, and on the shelf there are stiffening arcs in section, located along its longitudinal edges, turning into stiffening ribs of the rack, while in the amplifier one elongated oval hole is made for mounting to the carrier base, and two elongated through oval mounting holes are made in the fixed part of the bracket for fixing the bracket to the wall and for fixing the movable part to the fixed part of the bracket, and two square through fasteners are made on the moving part of the bracket openings;

- the bracket is a single L-shaped part, on which stiffening ribs are arched in cross section, and an oval hole is made in the bracket and amplifier of the bracket to be able to mount them to the wall;

- galvanized or corrosion-resistant steel of the front and back surfaces of the composite material is coated;

- the amplifier is made of galvanized or corrosion-resistant steel with a polymer coating.

The technical result is an increased bearing capacity of the bracket, low thermal conductivity and a decrease in metal consumption, is achieved by:

- the use of a composite multilayer material with a core of a polymer compound with low thermal conductivity;

- use of the bracket amplifier, which provides increased rigidity of the form of the stationary part of the bracket at a bend at an angle of 90 °;

- the use of sheet steel in a composite multilayer material.

The essence is illustrated by drawings, which show:

In FIG. 1 - a General view of the inventive bracket, which is made in the form of a stamped corner profile and has a sliding structure consisting of two parts - L-shaped stationary and movable (hereinafter referred to as the movable bracket);

In FIG. 2 - a General view of the inventive bracket, which is a single L-shaped part (hereinafter referred to as a stationary bracket);

Figure 3 - structure of a flame retardant composite multilayer material;

Figure 4 - comparison of temperature fields in the area of the L-shaped brackets of different metals.

In the figures indicated:

1. Anchor

2. Reinforcing washer

3. Gasket for bracket

4. Amplifier bracket

5. Fasteners

6. The stationary part of the movable bracket

7. The movable part of the movable bracket

8. L-shaped vertical profile of the movable bracket

9. Rivet connection

10. The front or back surface of a composite material made of galvanized or corrosion-resistant steel

11. Thermopolymer adhesive

12. The core of the flame retardant composite laminate

The bracket is made by cold stamping of a fire-resistant composite multilayer material with a thickness of at least 1 mm, while the front and back surfaces of the composite material are galvanized or corrosion-resistant steel 10, while the core of the composite material is a core 12 made of a polymer compound based on high-pressure polyethylene. The bracket also has an amplifier 4 made of galvanized or corrosion-resistant steel.

Considering that only the bracket amplifier is made of steel, and the stationary and moving parts of the movable bracket and the stationary bracket are made of a multilayer composite material, the metal consumption of the proposed bracket is significantly lower.

The table shows data on the coefficients of heat engineering uniformity and thickness of the insulation:

• on a “blind” section of the wall of a residential building;

• for a wall of reinforced concrete;

• with a wall thickness of 200 mm;

• at an internal air temperature of 20 ⁰ C;

• with mineral wool insulation made of stone wool in 2 layers (inner layer of lower density than the outer layer);

• coefficients of thermotechnical homogeneity are indicated only on the brackets (excluding insulation fastener, openings, etc.).

Comparison table with coefficients of thermal engineering uniformity for L-shaped brackets of various metals

Any front brackets are foreign inclusion in the thermal insulation system. Due to the improvement of the coefficient of thermotechnical homogeneity (for the claimed bracket - 0.92, for galvanized - 0.81, stainless steel - 0.81, aluminum - 0.7), there is no freezing in the facade system, which allows to reduce the thickness of the insulation by 10-15 % A bracket made of composite material significantly reduces freezing of the system.

The holes for fixing the profile are assigned from the central zone of the movable part of the bracket to the edges, which provides a more reliable rigid fixation.

The inventive bracket has an increased bearing capacity, low thermal conductivity and reduced metal consumption.

Claims (5)

1. Bracket for attaching hinged panels of the cladding of the building, containing an L-shaped part and having stiffeners, characterized in that it is made by cold stamping of a fire-resistant composite multilayer material with a thickness of at least 1 mm produced by extrusion and rolling or pressing, while the front and the back surface of the composite material is galvanized or corrosion-resistant steel with a thickness of 0.1-0.5 mm, while the core of the composite material is the inner component of the composite material mpaunda based on high-pressure polyethylene, and the polymer compound contains from 10 to 90% of flame retardants of the total number of components, the front and back surfaces of the composite material are connected to the polymer compound with thermopolymer adhesive, and the bracket has an amplifier made of galvanized or corrosion-resistant resistant steel. 2. The bracket according to claim 1, characterized in that it is made in the form of a stamped corner profile and has a sliding structure consisting of two parts - L-shaped stationary and movable, interconnected by means of fasteners, and the stationary and movable parts are made with the ability to move relative to each other, while on the rack of the bracket there is a hole for attaching to the wall, and on the shelf there are stiffeners arched in section, located along its longitudinal edges, passing into stiffeners ki, while in the amplifier of the bracket there is one elongated oval hole for fastening to the supporting base, and in the fixed part of the bracket there are two elongated through oval mounting holes for fixing the bracket to the wall and for fixing the movable part to the fixed part of the bracket, and on the moving part brackets made of two square through-hole mounting holes. 3. The bracket according to claim 1, characterized in that it is a single L-shaped part on which stiffening ribs are made arcuate in cross section, and an oval hole is made in the bracket and amplifier of the bracket to be able to mount them to the wall. 4. The bracket according to claim 1, characterized in that a galvanized or corrosion-resistant steel of the front and rear surfaces of the composite material is coated with a polymer coating. 5. The bracket according to claim 1, characterized in that the amplifier is made of galvanized or corrosion-resistant steel with a polymer coating.

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