Multi-size fillet weld fatigue test device

Abstract

The utility model belongs to the technical field of fillet weld fatigue test physical and chemical inspection, and particularly relates to a multi-size fillet weld fatigue test device which comprises a connecting rod, a base, a supporting beam and a sample. Fixing bolts are arranged in the I-shaped sliding way of the base, the two supporting beams are fixed through the fixing bolts in the I-shaped sliding way of the base, and supporting beam samples are connected through sample fixing bolts. According to the utility model, a single-side welding seam test piece or a double-side welding seam test piece can be loaded, a contrast test can be carried out through the existence of welding seams on two sides of the test piece and the state change, and the test efficiency is improved. The device is simple and convenient to operate, solves the technical problem that detection equipment is abraded due to long-time detection of the fillet weld of the thick plate, and can realize stable detection of fatigue strength of the fillet weld of multiple sizes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of testing device, specifically relates to a multi -size fillet weld fatigue test device. BACKGROUND

[0002] As the key connecting component of engineering structure, the fatigue strength of fillet weld is widely concerned. The fatigue test sample of fillet weld in engineering application is mostly cross tensile type, and its detection method is still axial force test. For the single fillet weld in the true sense, determining its fatigue strength is of great significance to the engineering application of welded component. For thin plate fillet weld, cantilever beam method can be used for testing, and single support can be used for sample support. However, for thick plate fillet weld, the fatigue load will generate large eccentric force, and long-time use will cause wear of the detection equipment, resulting in damage to the coaxial function, and then causing irreversible damage to the equipment. CONTENT OF THE UTILITY MODEL

[0003] The utility model provides a multi -size fillet weld fatigue test device in view of the deficiency of above -mentioned prior art.

[0004] The utility model solves the technical scheme as follows:

[0005] A multi -size fillet weld fatigue test device, including connecting rod, base, support beam and with sample, connecting rod suspends into the screw of base, places in the lower chuck of fatigue testing machine, two base I -shaped slide ways are processed on the base, there is fixed bolt in base I -shaped slide way, two support beams are fixed through the fixed bolt in base I -shaped slide way, and support beam sample is connected through sample fixed bolt.

[0006] Further, there are two support beams, forming three -point bending structure.

[0007] Further, the sample fixed bolt adopts the mode of one row 2-3 groups to fix the sample.

[0008] The utility model has the advantages of

[0009] The experimental device provided by the utility model adopts door type structure, has two support beams, forms three -point bending structure, is used for uniform stress, avoids that the shaft function is damaged due to different stress, the sample base is suitable for the sample of different span size to test through the slide way design, and the sample fixed bolt adopts the mode of one row 2-3 groups, prevents the deflection of sample. The utility model can load single -sided weld test piece or double -sided weld test piece, can carry out comparative test through the change of whether the sample has two -sided weld and state, improves test efficiency. The utility model is simple and convenient to operate, solves the technical problem that long -time detection of thick plate fillet weld will cause wear of detection equipment, and can realize stable detection of the fatigue strength of multi -size fillet weld.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a whole structure diagram of the utility model;

[0011] Figure 2 is Figure 1 a side view.

[0012] 1- connecting rod, 2- thread, 3- base, 4- support beam fixing bolt, 5- base I-shaped slide, 6- support beam, 7- sample fixing bolt, 8- sample. DETAILED DESCRIPTION

[0013] The principles and features of the utility model are described below in combination with examples.

[0014] Example 1

[0015] A multi-size fillet weld fatigue test device, the whole structure of the multi-size fillet weld fatigue test device comprises:

[0016] Connecting rod 1: used for fatigue testing machine clamping, connecting base 3;

[0017] Base 3: used for fixing connecting rod 1, support beam 6 and other components;

[0018] Fixing bolt 4: used for fixing support beam 6;

[0019] Base I-shaped slide 5: a I-shaped groove is processed on the base, used for span multi-size adjustment;

[0020] Support beam 6: supporting the fatigue test device, connecting the sample;

[0021] Sample 8: the sample to be tested;

[0022] Thread 2, sample fixing bolt 7: fixing connecting base, support beam, sample and other test components, ensuring stable connection of each component.

[0023] The specific structure comprises connecting rod 1, base 3, support beam 6 and sample 8, the sample 8 is fixed on the support beam 6 through the sample fixing bolt 7, the support beam 6 is fixed inside the base I-shaped slide 5 of the base 3 through the fixing bolt 4, and the position needs to be adjusted before fixing, so that the stress point of the sample is located at the center position. The connecting rod 1 is suspended into the thread 2 of the base 3 and is fastened, and then is placed in the lower clamp of the fatigue testing machine.

[0024] Through the upper clamp of the fatigue testing machine, the sample 8 center part is contacted but not stressed after clamping the indenter, and then the test program is started to test.

[0025] If the calculation is carried out according to the force, the unilateral indenter stress is half of the load of the testing machine;

[0026] If stress is calculated, the stress is calculated according to the cantilever beam structure mechanics calculation formula, the load, the sample width and thickness, and half of the span.

[0027] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-size fillet weld fatigue test apparatus comprising a connecting rod (1), a base (3), a support beam (6) and a test specimen (8), characterized in that, The connecting rod (1) is suspended into the thread (2) of the base (3), placed in the lower clamp of the fatigue testing machine, the base (3) is processed with two base I-shaped slide ways (5), the base I-shaped slide ways (5) are internally provided with fixing bolts (4), two support beams (6) are fixed through the fixing bolts (4) in the base I-shaped slide ways (5), and the support beams (6) and the sample (8) are connected through sample fixing bolts (7).

2. The multi-size fillet weld fatigue test apparatus of claim 1, wherein, The two support beams (6) form a three-point bending structure.

3. The multi-size fillet weld fatigue test apparatus of claim 1, wherein, The sample fixing bolts (7) adopt a mode of 2-3 groups in a row to fix the sample (8).

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