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Axis shifting type ballast direct shearing instrument

A technology of direct shearing instrument and crushing stone, which is applied in the direction of applying a stable shearing force to test the strength of materials, so as to achieve the effect of ensuring accuracy, easy disassembly and assembly, and prolonging service life.

Active Publication Date: 2015-05-06
BEIJING JIAOTONG UNIV +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The traditional direct shear instrument cannot meet its requirements

Method used

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  • Axis shifting type ballast direct shearing instrument
  • Axis shifting type ballast direct shearing instrument
  • Axis shifting type ballast direct shearing instrument

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Embodiment Construction

[0025] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The vertical direction in the present invention refers to the direction perpendicular to the reaction beam, and the horizontal direction refers to the direction parallel to the reaction beam.

[0026] The invention provides a shaft-moving direct ballast shearer for crushed stone. The direct ballast shearer for gravel is designed using the design principle of moving the shaft up to ensure that the ballast in the shear box is disturbed to a minimum. Such as figure 1 As shown, the direct shear apparatus includes a reaction force augmentation frame and a direct shear apparatus main body 20 arranged inside the reaction force augmentation frame. The reaction force reinforcement frame includes at least two vertical columns 19 and the reaction force crossbeam 18 that is horizontally arranged on the top of the column 19, so the ...

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Abstract

The invention relates to an axis shifting type ballast direct shearing instrument. The direct shearing instrument comprises a counter force application rack and a direct shearing instrument main body arranged on the inner side of the counter force application rack, wherein the direct shearing instrument main body consists of a vertical loading mechanism vertically connected with the counter force application rack, a first shear box arranged below the vertical loading mechanism, a second shear box arranged below the first shear box, a horizontal loading mechanism horizontally connected with the first shear box, a base mechanism for supporting the direct shearing instrument main body, and a data collection mechanism for collecting pressure data and shifting data. The axis shifting type ballast direct shearing instrument is dedicated to performance detection of a railway ballast, and has the characteristics of being simple and convenient to assemble and disassemble, capable of accurately measuring the direct shearing performance of the railway ballast, movement components are connected through beads or rolling shafts so as to offset the friction among the movement components, the measurement precision can be guaranteed to the greatest extent, and the service life is favorably prolonged.

Description

technical field [0001] The invention relates to a direct shearing instrument specially used for railway gravel ballast, in particular to a shaft-shifting gravel ballast direct shearing instrument. Background technique [0002] Ballasted track is one of the most important track structures in my country's railways. By the end of 2004, my country's existing railway mileage was 74,400 kilometers, of which ballasted track accounted for more than 99%. The gravel track bed in the ballasted track is composed of graded gravel, and its service status directly affects the safe operation and daily maintenance of the railway. Among them, more than 75% of the maintenance and repair work on the ballast track bed is for the gravel track bed. Expanded. Therefore, mastering the mechanical properties of railway crushed stone bed has important engineering practical significance. [0003] The failure of rock and soil mass and the instability under load are mainly caused by shear failure. In g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/24
Inventor 高亮徐旸蔡小培肖宏尹辉辛涛罗奇蒋函珂刘畅殷浩
Owner BEIJING JIAOTONG UNIV
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