Flexural fatigue testing machine

A bending fatigue and testing machine technology, applied in the direction of applying repeated force/pulsation force to test the strength of materials, etc., can solve the problems of complex equipment structure, low work efficiency, long test period, etc., and achieve high work efficiency, simple structure, and test short cycle effect

Active Publication Date: 2012-10-03
SANY HEAVY IND CO LTD (CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the material fatigue testing machines are large-load general-purpose experimental equipment, the equipment structure is complex, and the cost is expensive. Only one sample can be tested for fatigue at a time, and bending fatigue equipment that can perform fatigue comparison tests on multiple samples at the same time cannot be realized. , the test cycle is longer, and the work efficiency is lower

Method used

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Examples

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Embodiment 1

[0055] Such as figure 1 with figure 2As shown, a bending fatigue testing machine provided by an embodiment of the present invention includes: the hydraulic motor 1 is connected with the reducer 8, the hydraulic motor 1 is connected with the control device 11, the reducer 8 is connected with one end of the main shaft 2, and the main shaft The other end of 2 is connected with the counter 10, the main shaft 2 is rotatably connected with the main shaft support seat 4 through the bearing 9, the sample rack 5 is installed on the base 7 provided with guide rails, the sample rack 5 includes a sample holder 50 and a test The sample support frame body 51, the sample support frame body 51 includes a clamp mounting base 510, a locking block 511, a screw 512, a nut 513, two symmetrically arranged guide posts 514 and a connecting seat 515, and the sample clamp 50 is detachably fixed Installed on the fixture mount 510, the upper end of the guide post 514 that is symmetrically arranged is s...

Embodiment 2

[0060] Such as figure 1 with 3 As shown, another embodiment of the bending fatigue testing machine of the present invention is shown. Compared with the fatigue testing machine described in the above-mentioned embodiment 1, this fatigue testing machine also includes a sample support frame 14, and the sample support frame 14 Comprise support frame body 141 and support roller 142, support roller 142 is installed on the upper end of support frame body 141, support roller 142 supports sample, support frame body 141 includes support head 143, support locking block 144, support screw, support nut, Symmetrically arranged support guide posts 145 and support base 146, the sample support frame 14 is installed on the base 7 provided with guide rails through the support base 146, the support base 146 can move along the guide rails, and after the support frame 14 moves to the required position, The supporting base 146 can be fixed on the base 7 by bolts; the upper end of the symmetrically ...

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Abstract

The invention provides a flexural fatigue testing machine, which comprises a hydraulic motor and a deceleration machine used as driving devices, a main shaft, a plurality of eccentric wheels, a main shaft supporting seat and a specimen holder, wherein the main shaft is arranged on the main shaft supporting seat in a rotatable mode, the eccentric wheels on the main shaft are driven to rotate by the hydraulic motor, a specimen is fixed on the specimen holder, the height of the specimen holder and the horizontal distance between the specimen holder and the main shaft are adjustable, and periodic load is applied to the specimen by the eccentric wheels so as to enable the specimen to be bended and deformed repeatedly until the specimen is fractured. According to the flexural fatigue testing machine disclosed by the invention, a flexural fatigue test can be carried out on a plurality of specimens simultaneously every time, fatigue performances of the specimens can be contrasted, the test period is short, and the work efficiency is high; and the flexural fatigue testing machine has a simple structure and is low in cost, the flexural fatigue test can be carried out on specimens with different specifications, different loading positions and loading working conditions can be selected, and the scope of application of the machine is wide.

Description

technical field [0001] The invention relates to the technical field of testing equipment, in particular to a bending fatigue testing machine. Background technique [0002] In the application of engineering materials, their mechanical properties are generally tested. In addition to the conventional mechanical properties, the fatigue properties of materials are also a very important performance index, because the phenomenon of fatigue damage is extremely extensive. According to statistics, about 50-90% of mechanical structure damage is fatigue damage. [0003] At present, most of the material fatigue testing machines are large-load general-purpose experimental equipment, the equipment structure is complex, and the cost is expensive. Only one sample can be tested for fatigue at a time, and bending fatigue equipment that can perform fatigue comparison tests on multiple samples at the same time cannot be realized. , the test period is longer and the work efficiency is lower. C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/36
Inventor 易小刚欧耀辉彭倩筠
Owner SANY HEAVY IND CO LTD (CN)
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