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Drop Hammer Friction Sensitivity Tester for High Energy Insensitive Explosives

A technology of friction sensitivity and falling weight, which is applied in the direction of instruments, measuring devices, and mechanical devices, etc., can solve the problems of the impact energy of the friction plate, the impact of the test repeatability, and the increase of the matching gap, so as to reduce the impact damage and friction. Stable state and reduced frictional loss

Active Publication Date: 2020-11-03
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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Problems solved by technology

In addition, the tilting rod structure is prone to deformation and increased fit clearance under the action of high-energy impact, and the force of the tilting rod on the friction plate is not parallel to the direction of friction plate movement, so the impact energy on the friction plate is easily affected, affecting Test repeatability

Method used

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  • Drop Hammer Friction Sensitivity Tester for High Energy Insensitive Explosives
  • Drop Hammer Friction Sensitivity Tester for High Energy Insensitive Explosives
  • Drop Hammer Friction Sensitivity Tester for High Energy Insensitive Explosives

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] The overall structure of the falling hammer type high-energy insensitive explosive friction sensitivity tester is as follows: figure 1 , which is mainly composed of three parts: automatic drop hammer assembly 1, friction factor loading assembly 2 and drop hammer buffer assembly 3. The fully automatic drop hammer assembly 1 mainly consists of two parts: the lifting hammer and the release device that can set the height of the lifting hammer at will, and the dropping hammer that can adjust the quality by adding or subtracting weights. The friction factor loading assembly is installed directly under the drop hammer, and its main components are as follows: figure 2 As shown, it includes a slide plate 4, a slide plate buffer pad 5, a base 6, a slide plate guide unit 7, a slide plate height positioning device 8, a friction target plate 9, a t...

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Abstract

The invention discloses a drop hammer type high-energy insensitive explosive friction sensitivity tester. The tester comprises a fully-automatic drop hammer assembly, a friction factor loading assembly positioned below the fully-automatic drop hammer assembly, and a drop hammer buffer assembly arranged beside the friction factor loading assembly, the friction factor loading assembly includes a slide plate, the slide plate is connected with a pedestal through a slide plate buffer gasket, a slide plate guiding unit in the pedestal is connected with the slide plate, a friction target plate is fixedly arranged at one side of the slide plate, the other side of the slide plate is connected with a slide plate height positioning device, an explosive tablet cover and a contact force loading guide shaft are arranged at on the other side of the friction target plate, the contact force loading guide shaft is connected with the explosive tablet cover, the contact force loading guide shaft is limited by a baffle plate, a cylinder is arranged outside the baffle, and the cylinder is connected with a cylinder pressure control system. The tester has the advantages of stable and reliable action process, large impact energy and high energy precision, and meets the energy demand of the high-energy insensitive explosive friction sensitivity test.

Description

technical field [0001] The invention relates to an explosive sensitivity tester, in particular to a drop hammer type high-energy insensitive explosive friction sensitivity tester. Background technique [0002] Modern weapon warheads require high damage and high safety at the same time, so the development of high-energy insensitive explosives has become the key to solving the contradiction. In order to develop high-energy insensitive energetic materials, accurate testing and evaluation of the sensitivity of energetic materials to typical external stimuli is the basis. [0003] Friction is one of the most common external stimuli for energetic materials. The evaluation of friction sensitivity of energetic materials is usually characterized under a certain friction force, friction velocity and friction slip distance, and the friction force is related to the contact surface roughness and contact force. Therefore, there is a need for a test device that can adjust the contact for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/02
CPCG01N19/02
Inventor 周兴樊星赵仕勇范玉德赵维邓川冯加和
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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