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Rail joint rail head eccentric loading-rail waist fatigue test device and test method

A technology of eccentric loading and fatigue testing, which is applied in the direction of measuring devices, testing of material strength by applying repetitive force/pulsation force, testing of mechanical components, etc., can solve problems such as rail waist fatigue, and achieve large fatigue load and easy disassembly The effect of loading and easy processing

Active Publication Date: 2021-11-02
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, seamless rails are booming, and the quality of rail welded joints is more important to the safe operation of railways. However, there are no relevant standards in China that involve the rail waist fatigue performance of rail physical welded joints.

Method used

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  • Rail joint rail head eccentric loading-rail waist fatigue test device and test method

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing.

[0021] Such as figure 1 As shown, the rail joint rail head eccentric loading-rail waist fatigue test device of the present invention includes a hydraulic device, the hydraulic device includes a base 1 and a piston rod 2, the hydraulic device can be an electro-hydraulic servo machine or a pulsation fatigue testing machine, and the hydraulic device is a whole The main part of the test device. A lower supporting and fixing assembly is installed on the base 1 of the hydraulic device, and the lower supporting and fixing assembly is used for installing and fixing the steel rail 12 to be tested, and forms a support function for the steel rail 12 to be tested. The piston rod 2 of the hydraulic device is connected with an upper loading assembly, and the upper loading assembly is used to accurately apply an eccentric load to the rail head of the steel rail 12 to be tested.

[0022]...

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Abstract

The invention discloses a rail joint rail head eccentric loading-rail waist fatigue test device and a test method, and relates to the technical field of rail joint detection and testing. The technical problem firstly solved by the present invention is to provide a test device for performing fatigue performance test on rail welded joints. The technical solution adopted is: rail joint rail head eccentric loading-rail waist fatigue test device, including hydraulic device, hydraulic device Including the base and the piston rod, the upper loading assembly is connected to the piston rod, and the lower supporting and fixing assembly is installed on the base; the upper loading assembly includes a force sensor and a force transmission column, and a concave ball hole is set at the lower end of the force transmission column, and a steel ball is placed in the concave ball hole , used to accurately apply eccentric loads to the rail head of the rail to be tested; the lower support and fixing assembly includes support bars and compression blocks, used to support and fix the rail to be tested. The rail joint rail head eccentric loading-rail waist fatigue test method uses the above-mentioned test device to detect the rail waist fatigue performance of the rail to be tested.

Description

technical field [0001] The invention relates to the field of detection and testing of rail joints, in particular to a device and a test method for eccentric loading of rail welded joints and rail waist fatigue tests. Background technique [0002] Railway is an important national infrastructure and a popular means of transportation, and plays a key role in the comprehensive transportation system. Railway transportation is an important mode of transportation for important materials such as energy and minerals. [0003] At present, seamless rails are booming, and the quality of rail welded joints is more important to the safe operation of railways. However, there are no relevant standards in China that involve the rail waist fatigue performance of rail physical welded joints. Contents of the invention [0004] The first technical problem to be solved by the present invention is to provide a test device for performing fatigue performance test on rail welded joints. [0005] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/32G01M13/00
CPCG01M13/00G01N3/32G01N2203/0005G01N2203/0073
Inventor 宁雄显彭辉周海陈云霞
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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