SU1728423A1 - Method of manufacturing wood overhanging ridge beam - Google Patents

Abstract

Invention m. used in the manufacture of supporting glued wooden gable structures such as beams. SUMMARY OF THE INVENTION: A method of manufacturing involves gluing a package of plates of middle gable and extreme sheds and connecting the parts together. A rectangular package is formed with a length equal to 0.625 to 1.0 lengths of the middle part and a height equal to twice the middle part and a height equal to twice the height of the smallest height of the gable part, cutting the package along the length and height with the formation of a spasive one at one of its longitudinal edges the parts and the other one-sided parts, then each of them is turned, combined with each end of the gable part with the arrangement of the longitudinal fibers of the plates of the gable part along the lower edge, and the single-sided parts along the upper edge approx. 3 il.

Description

ate with

The invention relates to the manufacture of building structures, in particular supporting glued wooden gable beams for industrial, civil and agricultural buildings.

The aim of the invention is to reduce material consumption, simplify manufacture and increase the bearing capacity of the beam.

Beams are formed from three blanks of constant height, made of a single glued package — parts — one gable and two single-slope, rigidly interconnected in zones of zero bending moments. The dimensions of the package, therefore, of the parts of the beam are determined by static and constructive calculations. With

Forming the beams, the single-sided parts are turned and arranged so that the layers of the boards in them are parallel to the beam's slope, and the obliquely cut ones are parallel to its lower edge, i.e. in the compressed zone of the support part. This is due to the high degree of anisotropy of laminated wood, especially during stretching. The method implements a new constructive principle of the following orientation of wood fibers along stretched edges and eliminates the occurrence of tearing stresses directed across the fibers.

The manufacturing method includes gluing a rectangular block, cutting it into the workpieces (parts) of the beams, turning them and joining them onto a toothed spike during the formation of the beam. Achieving the goal

IXJ

IN) 00 N

| N

WITH

it is provided by the simplicity of making a rectangular block in an automated press, improving the quality of gluing, with the exception of manual labor during pressing and unpressing. Labor costs are reduced due to the reduction in the length of the pack boards, the paving of the sawn block, the lack of the need to guard inclined faces and the gluing of protective boards. An increase in the carrying capacity is achieved by tilting short workpieces when assembling the beam to a position that ensures the tracking orientation of the wood fibers along the stretched faces of the beam. The waste of laminated wood is reduced.

FIG. 1-3 Beam production scheme.

Positions 1 and 2 designate the component parts of the beam. Glued wooden double-console beam is made of three blanks (parts) of variable height (Fig. 2). At the joints of the workpieces, for example, toothed surfaces used after applying a waterproof glue for splicing individual parts onto a toothed spike are milled.

Elements 1 and 2 are formed by cutting a short rectangular block of constant height (Fig. 3).

Compared with the gable beam, manufactured in a known manner, the volume of waste during finishing processing is reduced by 12-20%, the complexity of finishing processing - by 35-40%, the cost of 1 m of structures - by 7-9%.

Claims (1)

Claims The method of manufacturing a wooden two-cantilever gable beam, comprising gluing a package of middle gable plates and extreme single-slope parts and connecting the parts together, characterized in that, in order to reduce the material intensity, simplify manufacture and increase the bearing capacity of the beam, form a rectangular a package with a length equal to 0.625 to 1.0 of the length of the middle part, and a height equal to twice the height of the smallest height of the gable part, cut the package in length and height to form one of the e the longitudinal edges of the horizontal sa sa gable part, and the other - shed parts, then each of them is edged and combined with each end of the gable part with the location of the longitudinal fibers of the plates of the gable part along the lower edge, and the shed parts along the upper edges. FIG. I