RU95008U1 - FORMWORK PROFILE - Google Patents

Abstract

 1. The shuttering profile of a closed box-shaped rectangular section containing a support platform, a vertical end stand adjacent to it with a groove, and a back stand with a castle depression formed on it, the cross section of which is an isosceles trapezoid, the outer end of the upper surface of which is aligned with the end of the support platform, the lower shelf and bending at the top of the vertical end post, characterized in that the angles at the base of the trapezoid are 70 °, the groove in the vertical end post in cross section is formed by an arc of circle p 600 mm radius, 1 mm depressed into the interior of the profile and situated at a distance of 25 ± 1 mm from the ends of the vertical front pillar and the thickness profile of the formwork walls is equal to 2 ± 0.2 mm. ! 2. The formwork profile according to claim 1, characterized in that the width of the lower shelf is 62 ± 0.3 mm, and the height of the vertical back post to the castle cavity is 63.5 ± 0.3 mm. ! 3. The formwork profile according to claim 1, characterized in that at the intersection of the bend of the upper part of the vertical end pillar and the supporting platform inside the section to a depth of 1 ÷ 1.5 mm, an arcuate extrusion of variable radius is made.

Description

The utility model relates to the field of construction and can be used in the construction of monolithic walls of buildings and structures.

A formwork profile of a closed rectangular box-shaped section is known, containing a support platform for the deck and an end and rear pillar adjoining to it, having a trapezoidal cross section on the rear pillar, the lower surface of which is located at an angle of 105 ÷ 115 ° to the rear pillar, and the upper surface of the castle hollow located at an angle of 25 ÷ 35 ° to the reference site (RF patent for utility model No. 85180, E04G 9/00, published July 27, 2009).

The disadvantage of this technical solution is the large area of the recess formed by extruding on the supporting platform with a depth of 1 ÷ 3 mm and a limb inclined to the supporting platform at an angle of 5 ÷ 9 °. This leads to a large consumption of sealing material that protects the end of the deck.

As a prototype, a closed rectangular box-shaped formwork profile was selected, containing a support platform with a groove for the deck 1.25 mm deep, vertical end posts adjoining it with a groove 1.25 mm deep, and a rear rack with a trapezoidal cross section (RF patent for useful Model No. 82735, E04G 9/00, published May 10, 2009). At the base of the isosceles trapezoid are angles equal to 75 °. Moreover, the beginning of the lower base surface of the castle depression is made on the rear rack at a distance from the lower shelf, equal to the size of the lower shelf.

The disadvantage of the prototype is the significant metal consumption of the structure (the thickness of the elements of the formwork profile is 3 ± 0.8 mm), which is a consequence of the use of трубы120 × 3 mm for the manufacture of the pipe profile.

The utility model solves the problem of creating a lightweight formwork profile, the design of which has the necessary strength.

To do this, in the shuttering profile of a closed box-shaped rectangular section containing a support platform, a vertical end stand with a groove adjacent to it, and a rear stand with a castle depression formed on it, the cross section of which is an isosceles trapezoid, the outer end of the upper surface of which is aligned with the end of the supporting platform, the lower shelf and bending in the upper part of the vertical end stand, according to the utility model, the angles at the base of the trapezoid are 70 °, the groove in the vertical end stand in cross section is formed by an arc circumference of 600 mm radius, 1 mm depressed into the interior of the profile and situated at a distance of 25 ± 1 mm from the ends of the vertical front pillar and the wall thickness profile of the formwork is 2 ± 0.2 mm. The width of the lower shelf of the shuttering profile is 62 ± 0.3 mm, and the height of the vertical back post to the castle cavity is 63.5 ± 0.3 mm. At the intersection of the bend of the upper part of the vertical end stand and the support platform inward to the section to a depth of 1 ÷ 1.5 mm, an arched extrusion of variable radius is made.

The claimed utility model is illustrated in the drawing.

The formwork profile has the shape of a closed box-shaped rectangular section and contains a vertical end stand 1, reinforced in the upper part by a bend 2, a back stand 3 with a lock cavity 4, a lower shelf 5, a support platform 6 with a recess 7, a groove on the vertical end stand 8, flat sections 9 and 10 on a vertical end stand to increase the contact spot of joined products.

The claimed formwork profile is made by rolling a profile from a steel strip (excluding the operation of forming a pipe), followed by welding. This technology allows us to produce a profile with a thickness of 2 ± 0.2 mm, and to ensure the necessary strength properties of the structure, the following dimensions were determined: the height of the vertical end post 120 ± 1 mm, the height of the vertical back post 100 ± 0.5 mm, the width of the lower shelf 62 ± 0 5 to provide a stepless joint of the outer corner, the height of the rear rack to the castle cavity 63.5 mm to enable docking with shields of other manufacturers, flat sections on the vertical end stand 25 ± 1 mm to increase the contact spot of the mating and dely, which increases friction forces when transporting products, stacked in a plate and eliminate possible deformation of products during assembly by tightening elements. The shape of the castle cavity in the form of an isosceles trapezoid with angles at the base of 70 ° allows you to increase the leveling forces and unify the design with the formwork of other manufacturers. An extrusion into the section on the supporting platform is necessary to ensure uniform coverage with a sealing material that protects the end of the deck. The reduced extrusion area and its shape leads to savings in sealing material. The shape and depth of the groove in the vertical end stand, formed in cross section by an arc of a circle with a radius of 600 mm, pressed 1 mm deep into the profile, is determined by the manufacturing technology of the profile.

Thus, the claimed design of the formwork profile while maintaining the required strength has a weight lower by one third compared to the known profiles, which leads to an improvement in its operational properties, reducing the cost of the products themselves and transport costs.

Claims (3)

1. The shuttering profile of a closed box-shaped rectangular section containing a support platform, a vertical end stand adjacent to it with a groove, and a back stand with a castle depression formed on it, the cross section of which is an isosceles trapezoid, the outer end of the upper surface of which is aligned with the end of the support platform, the lower shelf and bending at the top of the vertical end post, characterized in that the angles at the base of the trapezoid are 70 °, the groove in the vertical end post in cross section is formed by an arc of circle p 600 mm radius, 1 mm depressed into the interior of the profile and situated at a distance of 25 ± 1 mm from the ends of the vertical front pillar and the thickness profile of the formwork walls is equal to 2 ± 0.2 mm. 2. The formwork profile according to claim 1, characterized in that the width of the lower shelf is 62 ± 0.3 mm, and the height of the vertical back post to the castle cavity is 63.5 ± 0.3 mm. 3. The formwork profile according to claim 1, characterized in that at the intersection of the bend of the upper part of the vertical end pillar and the supporting platform inside the section to a depth of 1 ÷ 1.5 mm, an arcuate extrusion of variable radius is made.