RU2268969C1 - Glued building timber production method - Google Patents

Abstract

FIELD: building, particularly to produce building timber to erect building structure.

SUBSTANCE: method involves assembling timber board pack; applying glue between the boards of the pack; pressing the pack by applying stress not exceeding ones defining proportionality limit; securing boards of the pack one to another. The pack is assembled by serially installing mutually offset timber boards so that grooves and extensions are created on opposite ends of the pack. The pack is pressed in several stages beginning from the first two boards. The boards are fixed after termination of each pressing stage by installing pegs in planes transversal to board fiber direction and inclined to board planes.

EFFECT: increased quality and reliability of timber connection along with reduced labor inputs for timber production.

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Description

The invention relates to construction, and in particular to methods for the manufacture of glued wooden structural beams required for the assembly of various building structures.

A known method of manufacturing a wooden glued building timber, including the installation of boards of a package with applying glue, fixing the boards together and pressing the package into place until the glue is polymerized, making grooves in individual boards before installing them, installing liners with applied glue during assembly of the boards of the package (see. IPC E 04 C 3/12, USSR author's certificate No. 1719586, publ. March 15, 1992).

The known method has the disadvantages of:

- low quality of the manufactured wooden glued construction timber, due to the deformation of the timber during pressing;

- the great complexity of manufacturing, due to the implementation of the development of grooves of various sizes and shapes in individual boards before installing them in the package, and the installation of inserts during assembly of the package with additional fixation of the boards in the package with flat diaphragms.

Closest to the claimed technical solution is a method of manufacturing a glued wooden building beam, including assembling a package of boards with glue, fixing the boards together, pressing the package up to stresses not exceeding the proportional limit, producing grooves and transverse holes, installing shortened inserts in the grooves with the applied glue, and into the transverse holes of the nails, while the development of transverse holes and the installation of nails with them, followed by the removal of the compression forces to full polymer The adhesive is carried out after pressing in the boards of the package (see IPC E 04 C 3/12, USSR copyright certificate No. 1716035, published on 02.29.92).

The known method has the disadvantages of:

- low quality glued wooden building timber, due to the great efforts necessary to create the compression force of the entire package after assembly, since the application of which to the outer surface leads to its deformation and does not provide straightness along the length of the building beam;

- the great complexity of manufacturing, due to a complex technological process, including mechanical processing, in which, using a saw or other device, they produce grooves in which wooden inserts are placed, compress the package, and then transverse holes are drilled through the package and diaphragms across the load plane in which they put pins.

The technical result of the proposed solution is to improve the quality and reliability of the joining of the building beam while reducing the complexity of its manufacture.

The essence of the technical solution lies in the fact that in the method of manufacturing a wooden glued building beam, which includes assembling a package of boards with glue, pressing the package up to voltages not exceeding the proportional limit, fixing the boards together, assembling the package is carried out by sequentially installing the boards with an offset relative to each other each other with the formation of grooves on one side and protrusions on the other side, while pressing is performed in stages, starting with the first two boards, and the boards are fixed after each crimping first stage by mounting pegs in planes perpendicular to the direction of fiber boards, with an inclination to their planes.

The proposed method is illustrated by drawings, where figure 1, 2, 3 shows a phased assembly of a building beam; figure 4 - assembled building beam.

The method is as follows.

EXAMPLE 1. For the manufacture of wooden building timber take several boards, for example, 1, 2, 3, 4, 5 in the form of a finished profile. Board 1 is installed in the fixture (not shown in the drawing) and horizontal forces P. are applied. On board 1, board 2 is installed with a previously applied layer of glue 6 with offset relative to the board 1 and horizontal forces P and vertical forces P are applied to it, press-fit, after whereby holes 7 are drilled at an angle of 40 ° to the plane of the boards 1 and 2, into which square dowels 8 are pressed along the entire length of the boards 1 and 2, and fix them (see figure 1). Then set the board 3 with a pre-applied layer of glue 9, offset relative to the board 2, with the formation of the protrusion 10 and the groove 11, apply horizontal forces P and vertical forces P to it, press-fit, and then drill holes 12 at an angle of 40 ° to the planes boards 2 and 3, press in the square pins 13 along the entire length of boards 2 and 3, connecting and fixing in this way the boards 2 and 3 (see figure 2). Similar operations are performed when installing the next board 4. The front board 5 is glued to the board 4 by means of a glue layer 14 (see FIGS. 3 and 4).

EXAMPLE 2. The method involves drilling holes 7 and 12 at an angle of 60 ° to the planes of the boards of the package and performing technological operations analogously to example 1.

In the sequential installation of boards with an offset relative to each other, with the formation of grooves and protrusions on the other side, it is ensured by the formation of connecting elements that reliably and firmly connect the boards to each other during the erection of building structures, such as panels, walls, etc.

In addition, phased pressing, starting from the first two boards, allows you to reduce the force required to ensure a solid connection of each subsequent board to the previous one, as well as the straightness of the beam along the length, which eliminates its deformation during the manufacturing process, and fixing the boards of the package after each pressing step by installing the pins and placing them in planes perpendicular to the direction of the fibers with an inclination in the planes of the boards of the package, allows you to increase the surface of the connection of each subsequent board of the package with pr previous, providing mechanical connection of the boards of the package.

The application of the claimed invention will improve the quality of manufacture of building timber, simplify the manufacturing technology while reducing the complexity of manufacturing.

Claims (1)

A method of manufacturing a wooden glued load-bearing element, including assembling a package of boards with glue, pressing the package up to voltages not exceeding the proportional limit, fixing the boards together, characterized in that the package is assembled by sequentially installing the boards with offset relative to each other with the formation of grooves on one side and the protrusions on the other side, the press-fit is carried out in stages, starting from the first two boards, and the boards are fixed after each step of the press-fit by installing and pins in planes perpendicular to the direction of the fibers of the boards, with an inclination to their planes.

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