RU2190067C1 - Profile beam for concrete placement - Google Patents

Abstract

FIELD: construction, in particular, profile perforated beams designed for arrangement of concrete floors and bed. SUBSTANCE: the profile beam for concrete placement has two perforated side walls inclined to each other, with perforated beds outgoing from each of them, provided with adjusting screws and braced by transverse tension shackles, as well as a plastic insert installed in a groove formed in the upper zone of intersection of the walls. The transverse tension shackles are made at least with two holes located for passage of the adjusting screws of the beam beds through them. One of the lateral faces of the plastic insert has a plane vertical surface, and the other - a curvilinear one with two concave surfaces of similar dimensions positioned at equal distances from the horizontal axis of symmetry of the insert. EFFECT: enhanced reliability of the profile beam, reduced specific quantity of metal per structure and simplified mounting. 6 cl, 3 dwg

Description

 The invention relates to the field of construction, in particular to metal profile perforated beams designed for concrete floors and bases.

 The closest analogue is a profile beam for concrete work, including two perforated side walls inclined to each other with perforated bases extending from each of them, equipped with adjusting screws and connected transverse ties, and a plastic insert (Russian patent 2094574, class E 04 C 3/293, 10.27.97).

 The free installation of a plastic insert in the trench of a known beam due to possible deviations in size does not provide a tight fit for these elements. In addition, with a significant amount of pressure arising at the base of the beam, the castle seam connection of the transverse couplers with perforated base of the beam in the known solution does not provide reliable protection of the side walls of the beam from divergence.

 An object of the invention is to increase the operational reliability of the beam, simplifying its installation and reducing metal consumption.

 This problem is solved due to the fact that in the profile beam for concrete work, including two perforated side walls inclined to each other with perforated bases extending from each of them, equipped with adjusting screws and connected transverse ties, and a plastic insert installed in the gutter, formed in the upper zone of the intersection of the walls, the transverse ties are made with at least two holes located with the possibility of passage through them of the adjusting screws of the base beams, one of the side faces of the plastic insert having a flat vertical surface, and the other curved with two concave surfaces of the same size and placed at equal distances from the horizontal axis of symmetry of the insert, the lower and upper edges of the insert can be made convex with a radius of curvature R≥ 14 mm

 The side walls of the profile beam can be made with trapezoidal bends facing outward or inward of the beam profile.

 Cross ties can be arranged with equal or variable pitch along the length of the beam and made in the form of a profile element, the length of which exceeds the transverse size of the beam.

 The curved face of the plastic insert at the middle of the height can be made with a convex surface with a radius of curvature R≥320 mm, the edge sections of which smoothly pass into concave surfaces.

 The side walls and bases of the profile beams can be made of cold-rolled pre-perforated tape.

The invention is illustrated by drawings, which depict:
- figure 1 is a cross section of a profile beam;
- figure 2 is a transverse section of a plastic insert;
- figure 3 - installation process profile beams with transverse extensions.

 Profile beam 1 includes two lateral perforated walls 2 inclined to each other. Perforated bases 3 extend from the bottom of each wall 2.

 The side walls 2 and the base 3 are made of cold-rolled pre-perforated tape with a thickness of up to 0.55 mm, which significantly reduces the metal consumption of the structure.

 To increase the strength of the beam, the side walls 2 are made with trapezoidal bends 4 facing outward or inward of the profile.

 A groove 5 is formed in the upper zone of intersection of the side walls 2, into which a removable plastic insert 6 is installed, the upper 7 and lower 8 edges of the insert, facing outward and toward the groove, respectively, are bounded by a convex surface with a radius R≥14 mm.

 The implementation of the removable plastic insert 6 ensures that the installation is straightforward in the installation of each subsequent beam over the previous one by joining the latter through the plastic insert.

 The plastic insert 6 is a guide for the movement of the vibration rail in the process of laying concrete.

 One of the side faces of the insert 6 is made with a flat vertical surface 9, and the other is curved with two concave surfaces 10 having the same dimensions and located at the same distance from the horizontal axis of symmetry of the insert XX.

 At the middle of the height of the insert 6, the curved face can have a convex surface 11, the edge sections of which smoothly transition into concave surfaces.

 The concave surfaces of the insert provide its tight contact with the walls of the groove 5 of the beam by crimping.

 Due to the symmetrical arrangement of concave surfaces, the plastic insert can be freely removed and any of its horizontal edges can be returned: upper or lower.

 The perforated holes in the bases 3 of the beam 1 are designed to install plastic adjustment screws 12 in them, with which the beam 1 can be set to the desired height.

 In order to ensure spatial rigidity, the profile beam 1 is additionally equipped with transverse ties 13 with holes located in one or more rows with the possibility of passage of adjustment screws 12 through them.

 Cross ties can be arranged with equal or variable pitch along the length of the beam and made in the form of profile elements, the length of which exceeds the transverse size of the beam.

Claims (6)

 1. A profile beam for concrete work, including two perforated side walls inclined to each other with perforated bases extending from each of them, provided with adjusting screws and connected transverse ties, and a plastic insert installed in the groove formed in the upper zone of the intersection of the walls, characterized in that the cross ties are made with at least two holes located with the possibility of passage through them of the adjusting screws of the base of the beam, and one of the side faces of the plastic insert has a flat vertical surface, and the other - with two curved concave surfaces of equal size and arranged at equal distances from the horizontal insertion axis of symmetry.  2. Profile beam according to claim 1, characterized in that the side walls are made with trapezoidal bends facing outward or inward of the beam profile.  3. Profile beam according to any one of paragraphs. 1 and 2, characterized in that the transverse ties are arranged with equal or variable pitch along the length of the beam and are made in the form of a profile element, the length of which exceeds the transverse size of the beam.  4. Profile beam according to any one of paragraphs. 1-3, characterized in that the curved face of the plastic insert at the middle of the height is made with a convex surface with a radius of curvature R≥320 mm, the edge sections of which smoothly pass into concave surfaces.  5. Profile beam according to any one of paragraphs. 1-4, characterized in that the lower and upper faces of the insert are convex with a radius of curvature R≥14 mm  6. Profile beam according to any one of paragraphs. 1-5, characterized in that the side walls and bases are made of cold-rolled pre-perforated tape.

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