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A test device and method for applying continuous impact load

A technology of impact load and test device, applied in the direction of measurement device, application of repetitive force/pulse force test material strength, instrument, etc., can solve the problem of not being able to clearly provide the structural fatigue damage of the specimen, and difficult to realize the continuous application of impact load, etc. To achieve the effect of diversification, simple structure and convenient operation

Active Publication Date: 2021-05-18
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the impact loads generated by these loading devices are mostly one-time pulse loads, and it is difficult to realize the continuous application of impact loads, and it is impossible to clearly provide the fatigue damage information of the specimen structure under continuous impact loads.

Method used

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  • A test device and method for applying continuous impact load
  • A test device and method for applying continuous impact load
  • A test device and method for applying continuous impact load

Examples

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] figure 1 It is a structural schematic diagram of an embodiment of the test device for applying continuous impact load in the present invention. figure 2 for figure 1 A front view, partially in section, of one embodiment is shown. Such as figure 1 with figure 2 As shown, the device of the embodiment of the present invention includes an internal gear 3 , an external gear 4 , a guide bearing set 10 , a rail member 9 , an impact rod 5 , an oval gear set 7 , a power gear 8 , and a test piece 1 . The integral support 6 is a frame structure, including an upper platform and a lower platform parallel to each other, a vertical support for connecting and fixing the upper platform and the lower platform; It consists of vertically arranged steel parts; the test bench 11 is fixed on the lower platform. The elliptical gear set 7 is respectively connected with...

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Abstract

The invention discloses a test device for applying continuous impact load and a method thereof, which comprises an internal gear, an external gear, a guide bearing group, a guide rail, an impact rod, an action head, an elliptical gear group and a power gear. The top of the guide rail is fixed on the overall support, and the test piece is placed in the test bench at the bottom. The power gear drives the elliptical gear set, and transmits power through the internal gear, external gear and guide bearing set. The impact rod and the action head reciprocate vertically along the guide rail to exert continuous impact load on the specimen. The ratio of the inner diameter of the internal gear to the outer diameter of the external gear is 2:1, and the hypocycloid trajectory of any given point on the external gear is linear reciprocating motion. The variable rotation speed can be obtained by adjusting the meshing mode of the elliptical gear set, thereby realizing the continuous application of impact loads of different sizes and frequencies; the invention has simple structure, convenient operation, and safe and controllable operation.

Description

technical field [0001] The invention relates to a test device and a method for applying continuous impact loads, which can realize the application of continuous impact loads on the surface of engineering structures or components, and belong to the technical field of impact tests. [0002] technical background [0003] The impact damage of material structures can be seen everywhere in people's daily life, and is closely related to aerospace, ships, hydraulic engineering, automobiles, nuclear energy, protection engineering and even national defense engineering. From the accidental drop of a mobile phone to the impact of a car, the blasting and demolition of an abandoned building, the disintegration and landing of a space shuttle, and the collision of planets, there are structural impacts and collisions. These structures will be deformed or even destroyed under the impact load, which will affect the safety and service life of the structure. In order to fully understand and scie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/32G01N3/02
CPCG01N3/02G01N3/32G01N2203/0005
Inventor 陈小翠赵文虎张玉全郑源杨春霞刘惠文
Owner HOHAI UNIV
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