Device and method for detecting bending strength of structural wood

Abstract

The invention provides a structural timber bend strength tester, which comprises an engine base, a force-applying mechanism and a data acquisition device; slide ways are arranged on the engine base, two movable supports are arranged on the slide ways, and bent brackets are arranged on the movable supports; a hydraulic cylinder unit of the force-applying mechanism is arranged on the engine base, the force-applying mechanism also comprises a force-applying crossbeam and one or more force-applying holders, an upright is arranged on the engine base, the force-applying crossbeam is arranged on the upright and can vertically or horizontally move, the force-applying holders are arranged on the force-applying crossbeam and can move along the force-applying crossbeam, and the force-applying crossbeam is arranged on a moving part of the hydraulic cylinder unit; the data acquisition device comprises a force sensor and a displacement sensor, and the force sensor is arranged on the moving part of the hydraulic cylinder unit. The invention also provides a test method using the tester. According to the method and the tester, the bent strength of structural timbers can be conveniently and accurately measured.

Description

technical field [0001] The invention relates to the technical field of detection of wood mechanical properties, and relates to a method for detecting the bending strength of structural wood; the invention also provides a movable detection device for the bending strength of structural wood used in the detection method. [0002] technical background [0003] With the development of the national economy and the improvement of living standards, people pay more attention to the comfort of the living environment and the completeness of building functions, and the demand for wood structure buildings is also increasing year by year, thus accelerating the development of wood structure buildings in our country. Structural wood is developed with the demand of the construction industry for load-bearing components. Compared with ordinary wood, structural wood has great differences in the physical and mechanical properties of products and production processes. The most important thing is th...

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Problems solved by technology

In addition, the testing machine in the prior art has a large structure and single function, and generally can only perform a strength test on a single point of application of force on the specimen. There is no strength testing machine with two application points in China. If you want to test the strength of two application points, you need to modify the existing testing machine, which is very troublesome. In this way, it cannot meet the test requirements for two application points of structural beams and columns.

[0006] In addition, the force control accuracy of the transmission fluid dynamic testing machine is not high, so it cannot be used on site, and it cannot be applied to the requirements of rapid detection of the bending strength of wood used in structures of different sizes.

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