CN204302102U - Propellant powder determiner for compression strength - Google Patents
Propellant powder determiner for compression strength Download PDFInfo
- Publication number
- CN204302102U CN204302102U CN201420794504.0U CN201420794504U CN204302102U CN 204302102 U CN204302102 U CN 204302102U CN 201420794504 U CN201420794504 U CN 201420794504U CN 204302102 U CN204302102 U CN 204302102U
- Authority
- CN
- China
- Prior art keywords
- propellant powder
- depression bar
- pull
- push dynamometer
- compression strength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of propellant powder determiner for compression strength, comprise pedestal, pull and push dynamometer and be arranged on two screwed cylindrical poles on pedestal, described pole is connected with crossbeam by nut, described crossbeam has depression bar by screw hole, described depression bar upper end is provided with wheel shank, and columniform boss is made in described depression bar lower end.Described pull and push dynamometer is freely placed on pedestal, is placed with the circle relative with lug boss position by flattening bench above described pull and push dynamometer.The utility model can make that measurement propellant powder compression strength is convenient, simple, accurate, safety.
Description
Technical field
The utility model relates to military sciemtifec and technical sphere, specifically a kind of propellant powder determiner for compression strength.
Background technology
Along with the development of the modern high performance firearms such as high initial speed, high gun pressure, high loading density, its emission security sex chromosome mosaicism is more and more outstanding.The problems such as emission security such as the bore premature accident constantly occurred in recent years, make Canon launching security be subject to extensive concern.Research shows, the attrition crushing of propellant powder is the basic reason causing bombing bore.Gun propellant requires the compression strength of propellant powder powder, impact strength wants high and elastic modelling quantity wants large.Single double-base propellant explosive shape is less, can meet the requirement of mechanical property when factory inspection and acceptance, along with the storage time increases, can there is obvious reduction in propellant powder mechanical performance, finally have influence on the safety in utilization of impulse charge, cause the abnormal higher phenomenon of gun pressure.Particularly at Initial Stage after Ignition, when propellant powder powder bulk density is quite high, between gases at high pressure and powder, between powder and powder and there is the process of mutual shock, extruding between powder and thorax wall.In the process that this is stressed, if propellant powder mechanical strength is lower, can there is fragmentation in part powder, finally causes impulse charge burning area to increase, breech pressure is increased, thus causes bombing bore.Therefore, the compression strength measuring long term storage propellant powder is the important content of research gun propellant property Changing Pattern.
Utility model content
The purpose of this utility model is to provide a kind of testing arrangement of propellant powder compression strength, can fast, convenient, safety, the accurate compression strength measuring propellant powder.
The utility model is achieved in that
Propellant powder determiner for compression strength, is characterized in that, comprises pedestal, pull and push dynamometer and is arranged on two screwed cylindrical poles on pedestal; Described pole is connected with crossbeam by nut, and described crossbeam center has screwed hole, and described crossbeam has depression bar by screw hole, and described depression bar upper end is provided with wheel shank, and columniform boss is made in described depression bar lower end.Described pull and push dynamometer is freely placed on pedestal, is placed with the disc relative with lug boss position by flattening bench above described pull and push dynamometer.
Under technique scheme, the utility model can realize like this:
Described pull and push dynamometer is NH-5K type pull and push dynamometer.
When the utility model uses, putting a printing paper by flattening bench, and propellant powder ink paste is being incarnadined, propellant powder powder is put on printing paper, rotate the wheel shank on depression bar, static compress load is applied, until propellant powder is broken from perpendicular to y direction to propellant powder.When propellant powder is broken, red impression on printing paper is exactly impression deformation district perspective plane area, the i.e. lifting surface area of propellant powder, and the registration of liquid crystal display is exactly the maximum pressure suffered by propellant powder, the limit stress suffered by propellant powder is calculated, i.e. compression strength by the computing formula of pressure.
The utility model is threaded by crossbeam and depression bar, can provide stable and uniform static compress load, not only simple to operate, safety, and can also reduce measure error, making measurement result more accurate when compressing propellant powder powder.The method of lifting surface area measured by described printing paper and the propellant powder incarnadined with ink paste, simple to operate, and makes measurement more directly perceived.Described NH-5K pull and push dynamometer has the ability of real time record maximum pressure, and measurement result directly can read from its liquid crystal display, and make measurement simpler, measurement result is more accurate.This device can meet static afterburning condition, ensures precision
.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail
As shown in Figure 1, propellant powder determiner for compression strength is by pole 1, crossbeam 2, nut 3, wheel shank 4, depression bar 5, depression bar boss 6, form by flattening bench 7, pull and push dynamometer 8, liquid crystal display 9, pedestal 10, described pole is fixed on pedestal 10, described pole is fixed together by nut 3 and crossbeam 2, described crossbeam there is screwed hole, described crossbeam is linked together by screwed hole and depression bar 5, described depression bar is provided with wheel shank 4.Moved downward along the screw thread on crossbeam by moving runner grip strip dynamic pressure bar, thus stable spiral compression power is provided, ensure that this device meets static afterburning condition, cylindrical boss 6 is made in described depression bar bottom, described pull and push dynamometer 8 is provided with liquid crystal display 9, can read measurement result easily, described pull and push dynamometer is freely placed on pedestal 10, and the described flattening bench 7 that is subject to is placed in pull and push dynamometer.
The course of work using the utility model to measure propellant powder compression strength is:
Before test, putting a printing paper by flattening bench 7, and with red ink paste, propellant powder is being incarnadined, by Fig. 1, propellant powder is being placed on printing paper.The rotation wheel shank 4 of uniform speed slow, drives depression bar 5 to compress propellant powder downwards, until propellant powder is broken, must ensure that depression bar 5 does not produce unstability in load range when testing, depression bar boss 6 is without inclination and be displaced sideways, otherwise measurement result is invalid.Because the thickness of printing paper is much smaller than the diameter of propellant powder, so the impact of distortion on test result of printing paper can be ignored, when propellant powder is broken, red impression on printing paper is exactly impression deformation district perspective plane area, the i.e. lifting surface area of propellant powder, the registration on liquid crystal display 9 is exactly the maximum pressure suffered by propellant powder.
Claims (2)
1. a propellant powder determiner for compression strength, is characterized in that, comprises pedestal, pull and push dynamometer and is arranged on two screwed cylindrical poles on pedestal; Described pole is connected with crossbeam by nut, and described crossbeam center has screwed hole, and described crossbeam has depression bar by screw hole, and described depression bar upper end is provided with wheel shank, and columniform boss is made in described depression bar lower end; Described pull and push dynamometer is freely placed on pedestal, is placed with the disc relative with described lug boss position by flattening bench above described pull and push dynamometer.
2. propellant powder determiner for compression strength according to claim 1, is characterized in that described pull and push dynamometer is NH-5K type pull and push dynamometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420794504.0U CN204302102U (en) | 2014-12-16 | 2014-12-16 | Propellant powder determiner for compression strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420794504.0U CN204302102U (en) | 2014-12-16 | 2014-12-16 | Propellant powder determiner for compression strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204302102U true CN204302102U (en) | 2015-04-29 |
Family
ID=53107633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420794504.0U Expired - Fee Related CN204302102U (en) | 2014-12-16 | 2014-12-16 | Propellant powder determiner for compression strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204302102U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018464A (en) * | 2016-05-13 | 2016-10-12 | 西安近代化学研究所 | Explosive loading and penetrating stability evaluation method based on equivalent model experiment |
-
2014
- 2014-12-16 CN CN201420794504.0U patent/CN204302102U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018464A (en) * | 2016-05-13 | 2016-10-12 | 西安近代化学研究所 | Explosive loading and penetrating stability evaluation method based on equivalent model experiment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20171216 |