Finger joint stock lumber for construction and manufacturing method thereof

A technology for specifications and structures, which is applied in the manufacture of tools, truss structures, and finger joints. , Improve the stability of mechanical properties and reduce the effect of variability

Active Publication Date: 2011-11-09
FUJIAN LONTAI BAMBOO HOUSEHOLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is difficult to greatly improve the utilization rate of wood, and the mechanical properties of the final product are unstable and highly variable

Method used

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  • Finger joint stock lumber for construction and manufacturing method thereof
  • Finger joint stock lumber for construction and manufacturing method thereof
  • Finger joint stock lumber for construction and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0044] Cut the non-standard-length plantation fir gauge timber (obtained by sawing logs with a breast diameter of 20-35cm) into gauge timber with a fixed length of 0.5-1m as the finger-joint unit, and the moisture content of the finger-joint unit should be controlled at 10%-15% %, the cross-sectional size is 45mm×90mm, and there are no defects such as knots, cracks, etc. within 5cm from the finger-joint end of the standard timber.

[0045] According to this embodiment, the fir finger-jointed material for plantation is finally used for wall studs, and the target grades are determined to be 8.5 GPa (L grade) and 11 GPa (H grade). In this embodiment, 0.88 is selected as the multiple for plantation fir, and the elastic modulus range of the H grade is determined to be above 9.7 GPa, and the elastic modulus range of the L grade is below 9.7 GPa and above 7.5 GPa.

[0046] Hang the two ends of the finger joint unit on the elastic rubber band, and the fulcrum position is located withi...

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Abstract

The invention provides a stock lumber and a manufacturing method thereof, particular to a finger joint stock lumber for construction and a manufacturing method thereof. The finger joint stock lumber is formed by more than two finger point units in the same grade by finger point, and the length of finger tenon of the finger joint unit is 20-35mm. The manufacturing method thereof mainly includes: the finger joint units are classified according to the modulus of elasticity in static bending of each finger joint unit; gear milling is carried out on each finger joint unit; and finger joint is carried out on the finger joint units after gear milling in the same grade to obtain the finger joint stock lumber. The finger joint stock lumber of the invention has good construction performance and canbe applied to constructional elements such as wall bone pillar, beam of wall body and the like in wood construction building or other buildings.

Description

technical field [0001] The present invention relates to a gauge lumber and its manufacturing method, in particular to a structural finger-jointed gauge lumber which can be used for wall stud columns, beams and other components in wooden structures or other buildings and its manufacturing method. The field of wood processing technology. Background technique [0002] Specification lumber is a kind of standardized sawn lumber processed according to the requirements of wood structure building design, the width and height of the wood section are processed according to the specified size. Beams and other structural materials and components. [0003] my country has a long history of wooden structure buildings. A frame system with mortise and tenon joints connecting beams and columns has basically been formed as far back as 3,500 years ago. It gradually matured in the Tang Dynasty, and many large wooden structures have gone through hundreds or even thousands of years so far. After...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C3/12B27M3/00B27F1/16B27G11/00C09J161/12C09J175/00
Inventor 周海宾任海青费本华倪春
Owner FUJIAN LONTAI BAMBOO HOUSEHOLD CO LTD
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