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Grain friction test device under low-speed drop hammer impact loading

A test device and drop weight technology, applied in the direction of measuring devices, mechanical devices, instruments, etc., can solve problems such as research on the safety of friction of powder column, and achieve the effect of safety in the test process

Active Publication Date: 2014-12-24
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The frictional safety study of the grain cannot be carried out

Method used

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  • Grain friction test device under low-speed drop hammer impact loading
  • Grain friction test device under low-speed drop hammer impact loading
  • Grain friction test device under low-speed drop hammer impact loading

Examples

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Embodiment 1

[0013] refer to Figure 1 to Figure 2 , this embodiment gives a specific structure, assembly and manufacturing example of a grain friction test device under low-velocity drop weight impact loading. The low-speed drop hammer impact loading charge friction test device at least includes a pre-tightening bolt 1, a pressure block 2, a sample 3, a rod 4, a guide sleeve 5, a friction body 6, and a protection body 7.

[0014] see figure 1 , the protective body 7 is a double-segment cylinder structure, the diameter of the upper cylinder is 160-180mm, the height is 60-80mm, the diameter of the lower cylinder is 70-80mm, and the height is 25-35mm, and there is a through hole at the vertical center of the double-segment cylinder The diameter is 30-40mm, and there is a horizontal hole in the middle of the upper cylinder that runs through the above-mentioned vertical through-hole. The diameter of the horizontal through-hole is 20-30mm. There is a thread on the outside of the upper cylinder...

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Abstract

The invention discloses a grain friction test device under low-speed drop hammer impact loading, and solves the problem that a simple and easy explosive grain friction safety test is absent in the prior art. The device mainly comprises a pre-tightening bolt, a pressing block, a sample, an impact bar, a guide sleeve, a friction body and a protection body. The test device mainly adopts a drop hammer to impact the friction body, the sample and the friction body perform relative friction movement, and pressure between the sample and the friction body is applied through screwing force of the pre-tightening bolt; the friction movement speed between the sample and the friction body can be controlled by adjusting the height of the drop hammer; and the device can be used for explosive grain friction safety research, not only is suitable for a brittle explosive grain, but also is suitable for a viscoelastic explosive grain.

Description

technical field [0001] The invention belongs to the technical field of safety evaluation of propellants and explosives, and relates to a friction test device for powder columns under low-speed drop weight impact loading. Background technique [0002] The safety research of explosives under friction is an important part of the safety research of explosives under mechanical stimulation loading. The standard friction devices that have been formed mainly include the Russian Kozlov friction pendulum, the German BAM friction instrument, The ABL tribometer and ROTO tribometer in the United States are mainly suitable for milligram-level powder or slurry materials. Among them, the friction test of propellants and explosives in my country mainly uses the Kozlov friction test device. The feature of this device is that the sample is placed between two circular steel columns with a diameter of 10mm, and the steel column is pressurized up and down by a hydraulic device. The 2700±27g pendu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/00
Inventor 徐洪涛赵娟王晓峰冯晓军封雪松田轩冯博
Owner XIAN MODERN CHEM RES INST