CN204462183U - Ferromagnetism bullet speed measuring device - Google Patents
Ferromagnetism bullet speed measuring device Download PDFInfo
- Publication number
- CN204462183U CN204462183U CN201520000724.6U CN201520000724U CN204462183U CN 204462183 U CN204462183 U CN 204462183U CN 201520000724 U CN201520000724 U CN 201520000724U CN 204462183 U CN204462183 U CN 204462183U
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- speed
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Abstract
Ferromagnetism bullet speed measuring device, comprises frame, and a level that tests the speed is arranged in frame, in the rear end of frame, clamp device is installed, be provided with at least two coils testing the speed outside cylinder, be provided with ring-shaped magnet in coil periphery, coil and ring-shaped magnet are arranged in magnetic conduction sleeve.The utility model installs coil on the direction that bullet advances, when ferromagnetic bullet is through coil, bullet changes the Distribution of Magnetic Field that ring-shaped magnet produces, the change of coil flux amount is reflected to the change of coil induced currents, and the spacing distance calculating induced signal time of origin and coil can calculate the speed of bullet.
Description
Technical field
The utility model relates to a kind of bullet speed measuring device, the particularly speed measuring device of ferromagnetism bullet.
Background technology
Testing the speed in industry, for the object that tests the speed generally to be volume larger, or speed is slower, velocity-measuring system can have the abundant reaction time, that is lower to the requirement of corresponding sensor, realize difficulty lower, its general implementation can have Doppler to test, laser testing, Hall tests the speed.
For the object of the large speed of small size, above-mentioned mentioned method of testing all cannot realize, or difficulty is very big, and accuracy is very low, the unconventional method of other can realize, as photoelectric tube sillometer, high-speed photography, Particle dynamic analyzer and particle image velocimeter.But these equipment are due to expensive, laboratory is usually only had just to have cost can have these equipment.Uses of these equipments can allow manufacture, and research cost is greatly improved, and in order to address this problem, the velocity survey for small size ferromagnetism bullet proposes this patent content.
Summary of the invention
For solving prior art to the problem that tests the speed of small size ferromagnetism bullet, a kind of ferromagnetism bullet speed measuring device is provided, this apparatus structure advantages of simple, cost is lower, easy and simple to handle, can realize the Projectile velocity measurements of small-volume high-speed motion.
For achieving the above object, the utility model is by the following technical solutions:
Ferromagnetism bullet speed measuring device, comprises frame, and a level that tests the speed is arranged in frame, in the rear end of frame, clamp device is installed, be provided with at least two coils testing the speed outside cylinder, be provided with ring-shaped magnet in coil periphery, coil and ring-shaped magnet are arranged in magnetic conduction sleeve.
Above-mentioned ferromagnetism bullet speed measuring device, clamp device is three-jaw clamp device, spring one end is fixed on outside an end that tests the speed, the spring other end is fixedly connected with abutment sleeve, an end that tests the speed is fixedly connected with locating ring, locating ring is hinged with and cranks arm, and abutment sleeve to be connected by connecting rod with cranking arm, end of cranking arm is connected with flat folder, three flat folders, to crank arm and connecting rod is evenly distributed in the circumferential.
The utility model tests the speed to bullet, and the emitter of usual bullet is the emitter of band power valve, and bullet straight line forward end in power valve is launched.
The utility model installs coil on the direction that bullet advances, when ferromagnetic bullet is through coil, bullet changes the Distribution of Magnetic Field that ring-shaped magnet produces, the change of coil flux amount is reflected to the change of coil induced currents, and the spacing distance calculating induced signal time of origin and coil can calculate the speed of bullet.
Carry out in coil periphery, ring-shaped magnet being installed and with magnetic conduction sleeve, coil and ring-shaped magnet being wrapped up to ferromagnetic bullet, Distribution of Magnetic Field becomes dense distribution from original loose condition (of surface), changes of magnetic field gradient near magnet increases, be conducive to improving the voltage gradient near induced signal amplitude and signal polarity turning point, and then the interpretation precision of the time of raising.
The position that flat folder is used for clamping pellet injection pipe is flat, therefore is called flat folder, by three freely movable only flat folders realize pellet injection pipe to straight positioning and clamping.Processing ensures that the linearity of pellet injection pipe outer peripheral face and circularity meet certain requirement, three flat folders are by circumference this design uniform, ensure that the linearity of power valve is consistent with a linearity that tests the speed, the straight-line pass of bullet energy is tested the speed cylinder, simple and reliable for structure.
Accompanying drawing explanation
Fig. 1 is the utility model one-piece construction schematic diagram.
Fig. 2 is the utility model coil and ring-shaped magnet mounting structure schematic diagram.
Fig. 3 is the utility model clamp device structural representation.
Fig. 4 is the utility model electrical block diagram.
Fig. 5 is the utility model coil magnetic field schematic diagram.
Fig. 6 is the magnet schematic diagram after the utility model adds ring-shaped magnet and magnetic conduction sleeve.
Be labeled as in figure: 1 frame, 21 test the speed cylinder, and 22 coil stationary magazine creels, 3 springs, 4 abutment sleeves, 5 locating rings, 51 crank arm, 6 clamp devices, 61 flat folders, 71 coils, 72 ring-shaped magnets, 73 magnetic conduction sleeves, 74 digital oscilloscopes, 8 bullets.
Embodiment
Embodiment one
With reference to accompanying drawing, ferromagnetism bullet speed measuring device, comprise frame 1, cylinder 21 level that tests the speed is arranged in frame, in the rear end of frame, clamp device is installed, be provided with three coils 71 testing the speed outside cylinder 21, be provided with ring-shaped magnet 72 in coil periphery, coil and ring-shaped magnet are arranged in magnetic conduction sleeve 73; Clamp device is three-jaw clamp device, spring 3 one end is fixed on outside an end that tests the speed, the spring other end is fixedly connected with abutment sleeve 4, an end that tests the speed is fixedly connected with locating ring 5, locating ring is hinged with and cranks arm 51, abutment sleeve to be connected by connecting rod 41 with cranking arm, and end of cranking arm is connected with the flat folder of 61, three, flat folder, crank arm and connecting rod is evenly distributed in the circumferential.
Pulled to a side of testing the speed by abutment sleeve, the connecting rod drive on abutment sleeve is cranked arm and flat folder opens, and pellet injection cylinder is inserted the opening of flat folder, unclamp abutment sleeve, under the effect of spring tension, abutment sleeve is return on rear side of the cylinder that tests the speed, and the connecting rod drive on it is cranked arm and flat folder tightens up; Because flat folder is flexibly connected with cranking arm, and three flat folders are distributed in circumference, and after the launching tube clamping of circle, flat folder must keep the state be parallel to each other, thus makes pellet injection cylinder and test the speed an aligned.
Open digital oscilloscope, coil is connected with digital oscilloscope, launch bullet, when ferromagnetism bullet is by coil, magnetic field changes, digital oscilloscope display pulse waveform, because the distance between coil is fixed, bullet was got off by oscillograph recording by the time of coil.
Calculate the coil by fixed range and the time of bullet, thus the speed of bullet can be known.
Claims (2)
1. ferromagnetism bullet speed measuring device, comprises frame, and a level that tests the speed is arranged in frame, it is characterized in that, in the rear end of frame, clamp device is installed, be provided with at least two coils testing the speed outside cylinder, be provided with ring-shaped magnet in coil periphery, coil and ring-shaped magnet are arranged in magnetic conduction sleeve.
2. ferromagnetism bullet speed measuring device as claimed in claim 1, it is characterized in that clamp device is three-jaw clamp device, spring one end is fixed on outside an end that tests the speed, the spring other end is fixedly connected with abutment sleeve, an end that tests the speed is fixedly connected with locating ring, locating ring is hinged with and cranks arm, and abutment sleeve to be connected by connecting rod with cranking arm, end of cranking arm is connected with flat folder, three flat folders, to crank arm and connecting rod is evenly distributed in the circumferential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520000724.6U CN204462183U (en) | 2015-01-04 | 2015-01-04 | Ferromagnetism bullet speed measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520000724.6U CN204462183U (en) | 2015-01-04 | 2015-01-04 | Ferromagnetism bullet speed measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204462183U true CN204462183U (en) | 2015-07-08 |
Family
ID=53669052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520000724.6U Expired - Fee Related CN204462183U (en) | 2015-01-04 | 2015-01-04 | Ferromagnetism bullet speed measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204462183U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569479A (en) * | 2015-01-04 | 2015-04-29 | 浙江工业大学 | Ferromagnetic bullet velocity measuring device |
| CN104991084A (en) * | 2015-07-15 | 2015-10-21 | 中国航空工业集团公司上海航空测控技术研究所 | High-speed projectile velocity measuring device |
-
2015
- 2015-01-04 CN CN201520000724.6U patent/CN204462183U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569479A (en) * | 2015-01-04 | 2015-04-29 | 浙江工业大学 | Ferromagnetic bullet velocity measuring device |
| CN104991084A (en) * | 2015-07-15 | 2015-10-21 | 中国航空工业集团公司上海航空测控技术研究所 | High-speed projectile velocity measuring device |
| CN104991084B (en) * | 2015-07-15 | 2018-03-23 | 中国航空工业集团公司上海航空测控技术研究所 | A kind of High-velocity Projectiles speed measuring device |
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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 |
Granted publication date: 20150708 Termination date: 20180104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |