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Impact test device with self-balancing axial pressure loading function and test method

An impact test and self-balancing technology, which is applied in the direction of impact test, measuring device, machine/structural component test, etc., can solve the problems of test result error, size limitation, and influence on test result accuracy, so as to improve stability and improve The effect of accuracy

Active Publication Date: 2019-03-22
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing devices for impact tests only consider the impact load, and in actual engineering, the components basically exist under axial compression, which seriously affects the accuracy of the actual test results
The drop weight impact test devices currently on the market are often limited by size, so the test components are also reduced in a certain proportion, which also causes certain errors in the test results

Method used

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  • Impact test device with self-balancing axial pressure loading function and test method
  • Impact test device with self-balancing axial pressure loading function and test method
  • Impact test device with self-balancing axial pressure loading function and test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Follow the above technical solutions, refer to Figure 1 to Figure 10 , This embodiment provides an axial compression loading device and method for impact testing, which is used for research on impact loads under axial compression conditions.

[0044] refer to figure 1 , an impact test device with a self-balancing axial compression loading function includes a lifting device, a clamp control system, a pressurizing device, a base and a drop weight 15.

[0045] Wherein, the lifting device includes a column 11 , a movable beam 10 , a first shaft wheel 91 , a second shaft wheel 92 , a steel strand 24 , a winch 18 and a screw rod 12 .

[0046] Two columns 11 are arranged vertically, and fixed beams 16 are fixed on the tops of the two columns 11, and the columns 11 are I-shaped. The column 11 is evenly provided with some bolt holes 25 along the vertical direction. The two ends of the movable beam 10 are all fixed on the column 11 by the screw rod 12. The movable beam 10 can ...

Embodiment 2

[0063] refer to Figure 10 , the difference between this embodiment and embodiment 1 is that a protective limit device 28 is provided outside the test piece, refer to Figure 11 , the protection limiter 28 comprises a rectangular protective frame and a limiter fixed in the frame by a steel bar welded cross-section. The upper part of the protective frame is welded by four cross bars 39 and steel columns 38. The left and right sides of the lower part of the protective frame are obliquely welded with intersecting steel rods 30 and steel columns 38 for welding.

[0064] The lower part is fixed with a steel rod 30 inclined to improve the stability of the frame, and the steel rod at the lower part of the frame is inclined outwards to improve the stability of the whole frame.

[0065] refer to Figure 12 , the limiting device includes a first memory metal 31, a second memory metal 32, a third memory metal 33, a fourth memory metal 34 and an electromagnet 35, wherein the first memor...

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Abstract

The invention discloses an impact test device with a self-balancing axial pressure loading function and a test method. The impact test device comprises a pressurizing device, a base to hold a test piece, and a drop hammer. The pressurizing device includes a first retainer and a second retainer fixedly connected to each other; the inner side of the first retainer is fixedly connected with the bottom of a jack; the top of the jack is fixedly connected with one end of a first ball joint; the inner side of the second retainer is provided with a first force sensor; the first force sensor is fixedlyconnected to one end of a second ball joint; the other end of the first ball joint and the other end of the second ball joint are used for fixed connection with the test piece. The axial pressurizingdevice is added; impact load is applied under axial pressure; a time-history curve of impact force of the drop hammer and time-history curve of support reactive force under axial pressurizing can bemeasured at the same time so as to analyze a member, test data is more accurate, and actual engineering situations are better satisfied.

Description

technical field [0001] The invention belongs to the technical field of impact tests, and in particular relates to an impact test device and a test method with a self-balancing axial pressure loading function. Background technique [0002] In addition to static loads, buildings must also bear dynamic loads during use. Among them, the influence of impact load is particularly important, and the impact load test of structural members is usually carried out by using a drop weight impact test device. However, most of the existing devices for impact tests only consider the impact load, and in actual engineering, the components basically exist under axial compression, which seriously affects the accuracy of the actual test results. The drop weight impact test devices currently on the market are often limited by size, so the test components are also reduced in a certain proportion, which also causes certain errors in the test results. Contents of the invention [0003] In order t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/08
CPCG01M7/08
Inventor 王步孙振月缪福军张诺亚毕铁川梁家琦
Owner CHANGAN UNIV