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Instant unloading drop bar of a true triaxial testing machine

A testing machine and true three-axis technology, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems that affect the expected effect, the drop speed of the dowel bar cannot reach the instantaneous unloading of the load, etc.

Active Publication Date: 2019-04-05
CHINA UNIV OF MINING & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the relevant devices only drop the dowel bar by its own weight, and some also use spring devices to realize the rapid drop of the dowel bar, but the falling speed of these devices does not meet the requirements of instantaneous drop to unload the load instantaneously, which affects the experimental results. expected result

Method used

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  • Instant unloading drop bar of a true triaxial testing machine
  • Instant unloading drop bar of a true triaxial testing machine
  • Instant unloading drop bar of a true triaxial testing machine

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings:

[0018] As shown in Figures 1, 2 and 3, a true triaxial testing machine instantaneous unloading drop bar includes four parts: a dowel bar 9, a transmission shaft 8, a hydraulic bar 7, and a fixed frame 5. The fixed frame 5 fixes the entire mechanism on the testing machine. , the upper end of the hydraulic rod 7 is an F-shaped member (ie image 3 The indicated position of the upper part of the hydraulic rod 7 belongs to the upper part of the hydraulic rod), the oil pressure of the hydraulic oil delivery pipe 6 is used as the power to move up and down quickly, and the transverse rod 10b of the F-shaped member on the upper part of the hydraulic rod 7 drives the short arm of the transmission shaft 8b moves up and down, so that the long arm 8a of the transmission shaft moves up and down more quickly. The longitudinal rod 10a of the F-shaped component is connec...

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Abstract

The invention relates to an instantaneous unloading dropping rod of a real triaxial testing machine and belongs to the field of real triaxial testing machines. The instantaneous unloading dropping rod is composed of four parts, such as a dowel steel, a transfer shaft, a hydraulic rod and a fixed frame. The hydraulic rod moves up and down quickly due to the oil pressure of a hydraulic pump, an F-shaped transverse short rod on the hydraulic rod drives a short arm portion of the transfer shaft to swing up and down, so that a long shaft of the transfer shaft swings up and down more quickly. The end of the long shaft of the transfer shaft drives the dowel steel to more quickly ascend and fall through a circular steel sleeve, so that a force of a loaded test piece in some direction is transferred and the load is instantaneously unloaded, and a free surface is exposed. The dropping speed reaches the demand that the load is instantaneously unloaded during instantaneous dropping.

Description

technical field [0001] The invention relates to a drop rod for instantaneous unloading of a true triaxial testing machine, which is especially suitable for research on the mechanism of mine impact dynamic disasters and simulation reproduction in a laboratory, and is an important part of the instantaneous unloading of a true triaxial testing machine. Background technique [0002] At present, the relevant devices only drop the dowel bar by its own weight, and some also use spring devices to realize the rapid drop of the dowel bar, but the falling speed of these devices does not meet the requirements of instantaneous drop to unload the load instantaneously, which affects the experimental results. expected result. Contents of the invention [0003] In order to overcome the above-mentioned defects, the present invention provides a real triaxial testing machine instantaneous unloading drop bar used in the real triaxial testing machine simulation mine dynamic display experiment, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/02
CPCG01N3/02
Inventor 窦林名高杰姚丙南马滕飞蔡武
Owner CHINA UNIV OF MINING & TECH
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