CN206330474U - A kind of bullet speed measuring device based on high dynamic strain indicator - Google Patents
A kind of bullet speed measuring device based on high dynamic strain indicator Download PDFInfo
- Publication number
- CN206330474U CN206330474U CN201621310976.XU CN201621310976U CN206330474U CN 206330474 U CN206330474 U CN 206330474U CN 201621310976 U CN201621310976 U CN 201621310976U CN 206330474 U CN206330474 U CN 206330474U
- Authority
- CN
- China
- Prior art keywords
- bullet
- high dynamic
- dynamic strain
- strain indicator
- measuring device
- 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
Links
Landscapes
- Toys (AREA)
Abstract
The utility model discloses a kind of bullet speed measuring device based on high dynamic strain indicator, including target cabin, fore-stock and after-poppet are installed in the target cabin, separation of the projectile seat device is installed in the fore-stock, cylinder is cased with outside separation of the projectile seat device, cylinder is connected with zigzag mounting bracket, two spill bearings are sequentially installed with zigzag mounting bracket, sheet metal is fixed with spill bearing, on the top of sheet metal inserted with plastic sheet, foil gauge is installed in the root of sheet metal, foil gauge is connected with high dynamic strain indicator, target plate is installed on the after-poppet.Bullet speed measuring device of the present utility model based on high dynamic strain indicator, nuzzle up plastic sheet to drive sheet metal bending by bullet, the foil gauge being attached on sheet metal is while produce signal transmission to high dynamic strain indicator, calculate the difference of two foil gauge response times, so as to calculate the speed of bullet, device is ingenious, and measurement is accurate.
Description
Technical field
The present invention relates to the bullet speed measuring device based on high dynamic strain indicator, belong to bullet and test the speed field.
Background technology
Using gas big gun emission bullet, bullet goes out before thorax will accelerate to certain initial velocity in a flash, to research bullet pair
In the destructive power of different structure, how it is effectively measuring go out bullet initial velocity it is extremely crucial.
Current bullet speed measuring device mainly has a light veil type speed measuring device, infrared speed measuring device, high-speed camera measurement and
Silk screen such as tests the speed at the method.Light veil type speed measuring device and the common shortcoming of infrared speed measuring device are that precision is not high enough, are surveyed for testing
Measure error larger.Requirement of the light veil type speed measuring device to light source is quite harsh, can only be in the outdoor or indoor light without flicker
Measured under source, if carrying out the measurement of bullet velocity in target cabin, it would be desirable to which, to its other light filling, institute is for narrow confined air
Between measure, the device is relative complex and reliability is relatively low.Infrared speed measuring device is higher to environmental requirement, broken small paper in test environment
The particulate matters such as piece all can produce influence to test result.High-speed camera mensuration is relatively accurate, but to shooting environmental requirement compared with
Height, excessively dark environment can influence to shoot, from cost consideration, if the speed of measurement is higher, to the sample frequency of high-speed camera
There is higher requirement with frame number, the early investment of this kind of high-speed camera is also larger.Silk screen velocimetry is required for air exercise disconnected every time
Silk screen changed, relative cost it is higher and change it is cumbersome.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of based on high dynamic strain indicator
Bullet speed measuring device, plastic sheet is nuzzled up so as to driving sheet metal bending by bullet, foil gauge on sheet metal is attached to simultaneously
Signal transmission is produced to high dynamic strain indicator, the difference of two foil gauge response times is calculated, so that the speed of bullet is calculated,
Device is ingenious, and measurement is accurate.
Technical scheme：The dress in order to solve the above technical problems, a kind of bullet based on high dynamic strain indicator of the present invention tests the speed
Put, including target cabin, be provided with the target cabin in fore-stock and after-poppet, the fore-stock and separation of the projectile seat device, bullet are installed
Cylinder is cased with outside support separator, cylinder is connected with zigzag mounting bracket, and two spills are sequentially installed with zigzag mounting bracket
Bearing, sheet metal is fixed with spill bearing, on the top of sheet metal inserted with plastic sheet, is provided with the root of sheet metal
Foil gauge, foil gauge is connected with high dynamic strain indicator, and target plate is provided with the after-poppet.
Preferably, being provided with through hole in the separation of the projectile seat device, the through hole includes three sections, and first paragraph is conical opening, in
Between section be correction section, the inlet diameter of interlude is 1.5~1.6 times of bullet diameters, and the outlet diameter of interlude is more straight than bullet
Big 0.1~the 0.2mm in footpath, the 3rd section is cylindrical section.
Preferably, the correction section is that 3~4 times, the 3rd section of length of bullet length is 4~5 times of bullet length.
Preferably, being provided with spring washer between the cylinder and separation of the projectile seat device.
Preferably, the sheet metal is copper sheet or aluminium flake.
Preferably, the spacing of two sheet metals is 10 ± 1cm.
Beneficial effect：The present invention the bullet speed measuring device based on high dynamic strain indicator, by bullet nuzzle up plastic sheet from
And sheet metal bending is driven, the foil gauge being attached on sheet metal is while produce signal transmission to high dynamic strain indicator, calculating two
The difference of foil gauge response time, so as to calculate the speed of bullet, the device outdoor and light different illumination conditions indoors
Test can be accurately completed down, device is ingenious, measurement is accurate.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the structural representation of cylinder in Fig. 1.
Fig. 3 is the structural representation of Fig. 1 middle concave bearings.
Embodiment
As shown in Figure 1 to Figure 3, a kind of bullet speed measuring device based on high dynamic strain indicator of the invention, including target cabin 1,
Fore-stock 3 and after-poppet 20 are installed, fore-stock 3 is fixed by screw 2 in the target cabin 1, screw is passed through in the fore-stock 3
4 are provided with separation of the projectile seat device 7, and separation of the projectile seat device 7 is cased with cylinder 5 outside, set between the cylinder 5 and separation of the projectile seat device 7
Have spring washer 6, cylinder 5 is connected with zigzag mounting bracket 9 by screw 8, be sequentially installed with zigzag mounting bracket 9 two it is recessed
Shape bearing 15, spill bearing 15 is fixed by screw 13, and sheet metal 12 is fixed with spill bearing 15, using screw 16 by gold
Belong to piece 12 tightly to fix, the sheet metal 12 is copper sheet or aluminium flake, and the spacing of two sheet metals 12 is 10 ± 1cm, in metal
The top of piece 12 is provided with foil gauge 14, foil gauge 14 and ultra dynamic strain in the root of sheet metal 12 inserted with plastic sheet 11
Instrument 17 is connected, and the highest sample frequency of deformeter is 10MHz, the high dynamic strain indicator 17 that can be moved using Yangzhou section, the rear branch
Target plate 21 is installed, after-poppet 20 is arranged in target cabin 1 by screw 19 on frame 20, using nut 18 and screw 22 by target plate 21
It is fixed on after-poppet 20.
In the present invention, through hole is provided with the separation of the projectile seat device 7, the through hole includes three sections, and first paragraph is conical opening,
Anterior opening is larger, and in the first paragraph, interlude is correction section, and the inlet diameter of interlude is son for bullet 10 and the insertion of bullet support
1.5~1.6 times of the diameter of bullet 10, the outlet diameter of interlude is than the big 0.1~0.2mm of diameter of bullet 10, and correction section is bullet 10
3~4 times of length, purpose cause bullet 10 depart from bullet support after ensure that contacted with target plate 21 when the center in target plate 21
Position, the 3rd section is cylindrical section, and the distance needs to reach 4~5 times of the length of bullet 10, in order to reduce bullet 10 in separation of the projectile seat
Vibration in device 7.The separation of the projectile seat device 7 solves the problem of target cabin 1 is smaller to install (being arranged on outside target cabin 1).
In the present invention, when installing zigzag mounting bracket 9, in bottom surface and separation of the projectile seat device 7 that the structure need to be ensured
Heart line is parallel, and two pieces of sheet metals 12 close to plastic sheet 11 need to ensure and plane perpendicular.Adjust sheet metal 12 and plastic sheet 11 is whole
The height of body, makes bullet 10 (general warranty is left in 1mm through the edge for the plastic sheet 11 that can nuzzle up after separation of the projectile seat device 7
It is right), sheet metal 12 produces bending therewith, and the foil gauge 14 being attached on sheet metal 12 is while produce signal transmission to ultra dynamic strain
Instrument 17.Bullet 10 is likely to result in damage, the plastic sheet 11 of adhesive type is convenient for changing, after breakage when nuzzling up plastic sheet 11
Replacing.
The distance between two pieces of plastic sheets 11 are measured as L, and L is 10 ± 1cm, can be adjusted according to space size in target cabin 1
Whole, the time response difference that former and later two foil gauges 14 can be obtained by high dynamic strain indicator 17 is Δ t, then we can obtain bullet
10 velocity amplitude is V=L/ Δs t.(theoretical velocity measurement range is in 0-10k m/s)
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of bullet speed measuring device based on high dynamic strain indicator, it is characterised in that：Including target cabin, it is provided with the target cabin
It is provided with fore-stock and after-poppet, the fore-stock outside separation of the projectile seat device, separation of the projectile seat device and is cased with cylinder, cylinder and Z
Font mounting bracket is connected, and two spill bearings are sequentially installed with zigzag mounting bracket, metal is fixed with spill bearing
Piece, on the top of sheet metal inserted with plastic sheet, foil gauge, foil gauge and high dynamic strain indicator are provided with the root of sheet metal
Target plate is installed on connection, the after-poppet.
2. the bullet speed measuring device according to claim 1 based on high dynamic strain indicator, it is characterised in that：The bullet support point
From through hole is provided with device, the through hole includes three sections, and first paragraph is conical opening, and interlude is correction section, and the entrance of interlude is straight
Footpath is 1.5~1.6 times of bullet diameters, the outlet diameter 0.1~0.2mm bigger than bullet diameters of interlude, and the 3rd section is cylinder
Section.
3. the bullet speed measuring device according to claim 2 based on high dynamic strain indicator, it is characterised in that：The correction section
For 3~4 times of bullet length, the 3rd section of length are bullet length 5 times and more than.
4. the bullet speed measuring device according to claim 1 based on high dynamic strain indicator, it is characterised in that：The cylinder with
Spring washer is provided between separation of the projectile seat device.
5. the bullet speed measuring device according to claim 1 based on high dynamic strain indicator, it is characterised in that：The sheet metal
For copper sheet or aluminium flake.
6. the bullet speed measuring device according to claim 1 based on high dynamic strain indicator, it is characterised in that：Two sheet metals
Spacing be 10 ± 1cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621310976.XU CN206330474U (en) | 2016-11-30 | 2016-11-30 | A kind of bullet speed measuring device based on high dynamic strain indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621310976.XU CN206330474U (en) | 2016-11-30 | 2016-11-30 | A kind of bullet speed measuring device based on high dynamic strain indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206330474U true CN206330474U (en) | 2017-07-14 |
Family
ID=59289554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621310976.XU Expired - Fee Related CN206330474U (en) | 2016-11-30 | 2016-11-30 | A kind of bullet speed measuring device based on high dynamic strain indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206330474U (en) |
-
2016
- 2016-11-30 CN CN201621310976.XU patent/CN206330474U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109813618A (en) | Vertical Hopkinson pressure bar test device and test method | |
| CN203981379U (en) | A kind of optical characteristic test board of flat-panel monitor | |
| CN204330208U (en) | For detecting the force standard machines of pull and push dynamometer | |
| CN209673574U (en) | Vertical Hopkinson pressure bar test device | |
| CN102636141A (en) | High-precision air pressure type cable length measuring device | |
| CN103884405B (en) | The gas meter, flow meter correction method shown based on liquid crystal display screen | |
| CN108159632A (en) | With check weighing, the force exerciser of speed measuring function and its measuring method | |
| CN206330474U (en) | A kind of bullet speed measuring device based on high dynamic strain indicator | |
| CN106382848B (en) | A kind of bullet speed measuring device based on high dynamic strain indicator | |
| CN206330991U (en) | A kind of velocity measuring device of sub-calibre bullet | |
| CN107782528A (en) | The wind- tunnel investigation device and method that cable machine cage is swung under the influence of a kind of strong wind | |
| CN202522218U (en) | High-precision air-pressure-type cable meter counter | |
| CN106526221A (en) | Device for measuring speed of subcaliber bullet | |
| CN104034914B (en) | A kind of for measuring emulsion auxiliary device of explosion velocity in big gun hole | |
| CN207074107U (en) | Pedal assembly spring F S curve detection devices | |
| CN203470359U (en) | Bearing steel ball checking device | |
| CN214794249U (en) | A supplementary leveling instrument for hopkinson pole | |
| CN210442358U (en) | Sensor device for measuring sand content | |
| CN209605760U (en) | A kind of automatic measuring instrument | |
| CN208847993U (en) | A kind of ageing tester after crystal liquid substrate and back light system integration | |
| CN113138062A (en) | Multifunctional aerodynamic experiment device and teaching method | |
| CN202290601U (en) | Automatic detection separator for impeller quality of cross-flow fan | |
| CN206001558U (en) | A kind of erecting device and oil smoke sensor and the lampblack absorber of applying this erecting device | |
| CN106017767B (en) | A kind of adjustable fluctuation wall surface resistance test device | |
| CN207515996U (en) | The wind- tunnel investigation device that cable machine cage is swung under the influence of a kind of strong wind |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170714 Termination date: 20191130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |