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Drop hammer type steel wire rope impact failure test device and method

A technology of impact damage and test equipment, which is applied in the direction of measuring equipment, application of repeated force/pulsation force to test material strength, instruments, etc., can solve the problem that the impact application condition of the interception steel wire rope has not been reflected, and does not involve the detection of wire rope interception performance and Impact damage analysis and other issues to achieve strong impact intensity and ensure the effect of operation

Active Publication Date: 2020-06-05
CHINA UNIV OF MINING & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems existing in the existing steel wire rope impact tension vibration device or method are mainly: the harsh impact application conditions for intercepting steel wire ropes are not reflected, and the above application conditions do not involve the interception performance detection and impact damage analysis of steel wire ropes

Method used

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  • Drop hammer type steel wire rope impact failure test device and method
  • Drop hammer type steel wire rope impact failure test device and method
  • Drop hammer type steel wire rope impact failure test device and method

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Embodiment

[0032] The content of the analysis in this patent is that the wire rope preload force is 3t, the impact instantaneous speed is 10m / s, and the screenshot of the video of the wire rope falling hammer taken by high-speed camera is as follows: image 3 (midpoint position), the vibration displacement obtained by video tracking processing is as follows Figure 4 , it can be seen that the vibration of the steel wire rope after the impact is a uniform oscillation damping vibration. Draw the wire rope tension signal collected by the tension sensor as Figure 5 , the tension of the steel wire rope has an instantaneous impact peak value, and the loss of the remaining pretension force of the steel wire rope is about 80% of the original. The vibration signal collected by the acceleration sensor is drawn as Image 6 , the peak fluctuations of the positions on both sides due to impact can be obtained.

[0033] The obtained change law of the tension vibration of the steel wire rope after be...

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Abstract

The invention discloses a drop hammer type steel wire rope impact failure test device and method. The device is composed of fixed vertical piles, steel wire rope connecting pieces, a pre-tightening system, an impact system and measuring systems. Rope heads at the two ends of the steel wire rope are fixed on the fixed vertical piles on the left and right sides through the steel wire rope connectingpieces; the pre-tightening system arranged on the left fixed vertical pile applies force to tighten the steel wire rope, the impact system arranged at the midpoint of the steel wire rope impacts thesteel wire rope from top to bottom, and the measuring systems are arranged on the steel wire rope and beside the steel wire rope for tension vibration detection and analysis. Rope body surface drop hammer transverse impact working conditions of the steel wire rope under different pre-tightening forces can be realized, and dynamic responses such as tension vibration of the steel wire rope and the damage mechanism of the steel wire rope are detected and analyzed.

Description

technical field [0001] The invention belongs to the technical field of steel wire rope impact damage detection, and specifically relates to a drop hammer type steel wire rope impact damage test device and method, which can realize the radial external impact of the steel wire rope after pretensioning, and is used to study the dynamic response of the steel wire rope after being impacted. damage mechanism. Background technique [0002] Steel wire rope is twisted from high-strength flexible steel wire, which has excellent tensile and bending properties, and is widely used in many engineering fields such as lifting and transportation. There are also important applications in the field, such as road guardrails, warship arresting cables, etc. The wire rope is responsible for intercepting moving components and slowing them down to stop, absorbing the kinetic energy of the equipment into its own elastic potential energy to avoid high-speed collision damage between the equipment and o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/34G01N3/06
CPCG01N3/06G01N3/068G01N3/34G01N2203/0005G01N2203/0033G01N2203/06G01N2203/0647
Inventor 张德坤张欣悦郭永波吴明锦张俊王大刚
Owner CHINA UNIV OF MINING & TECH
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