CN206523379U - Hopkinson pressure bar is launched and bullet recovery system - Google Patents
Hopkinson pressure bar is launched and bullet recovery system Download PDFInfo
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- CN206523379U CN206523379U CN201720068224.5U CN201720068224U CN206523379U CN 206523379 U CN206523379 U CN 206523379U CN 201720068224 U CN201720068224 U CN 201720068224U CN 206523379 U CN206523379 U CN 206523379U
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- bullet
- bar
- emission cavity
- recovery system
- transmitting tube
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Abstract
Hopkinson pressure bar is launched and bullet recovery system, including testing stand and air chamber, is provided with the testing stand on base, base and is disposed with transmitting tube, emission cavity, threeway（Connect vavuum pump）, manual ball valve, pneumatic ball valve, pressure regulator valve, air chamber, bullet inside transmitting tube, incident bar, transmission bar, the buffer unit of spacing transmission bar, bullet is provided with the emission cavity, three-way connection is provided with the high pressure breather line, another joint of the three-way connection connects a vavuum pump by exhaust tube, compressed air is pressurized bullet being pushed into transmitting tube by air chamber to emission cavity, realize the effect of ballistic projections, when needing to reclaim bullet, negative pressure is applied to transmitting tube by the way that vacuum pump gas and three-way connection are dynamic, bullet is reclaimed so as to realize, manually-operated gate is normally opened in wherein testing, pneumatic ball valve is only opened in transmitting, with operated pneumatic valve magnetic valve can be avoided to launch Electromagnetic Interference data acquisition when opening in addition.
Description
Technical field
The utility model is related to material dynamic mechanical performance study field, more particularly to Hopkinson pressure bar transmitting and bullet
Recovery system.
Background technology
Hopkinson pressure bar is a kind of device for detecting test specimen dynamic mechanical, and it mainly includes air gun（Big gun, Huo Chengfa
Injection device）, bullet, incident bar, transmission bar, energy absorbing device and data collecting system composition.Test specimen be sandwiched in incident bar and
Between transmission bar.Bullet 8（A piece quarter butt）Hand gases at high pressure are promoted, with a translational speed from emitter（Surveyed by tachymeter
Go out）Project, hit incident bar, a pressure pulse, i.e. incidence wave are formed in incident bar（Should by the resistance being attached on incident bar
Become piece to measure）, pressure pulse is propagated forward in incident bar, when being sent to incident bar with test specimen interface, due to material for test
With the inertia effect of transmission bar material, whole test specimen will be compressed.Simultaneously as the wave impedance difference between bar and test specimen, enters
Ejected wave is partially reflected also to be measured for back wave by the resistance strain gage being attached on incident bar, resistance of the transmitted wave on transmission bar
Foil gauge is measured, and deformation and the destruction situation for obtaining material can be just handled by the incidence wave, back wave and transmitted wave that measure, is obtained
Obtain the dynamic mechanical data of material.
Emitter is generally Pneumatic catapult, including emission cavity and transmitting tube in the prior art, every time before experiment
It is required for bullet inserting transmitting tube from the free end of transmitting tube, then heads into transmitting tube with iron wire, this process is undoubtedly wasted
Experimenter substantial amounts of time.The utility model patent of Application No. 201320625652.5 discloses a kind of Hopkinson pressure
The ballistic projections device of bar, sealing is set by being set in transmitting tube close to one end of emission cavity at a port, port
Door, bullet only needs to that from port transmitting tube just can be loaded, and facilitates the filling of bullet.But stilled need in the technological means
Bullet is loaded manually before experiment every time, and the process still can waste the time of experimenter.
Utility model content
The purpose of this utility model is to provide a kind of Hopkinson pressure bar transmitting and bullet recovery system, with can from
The dynamic effect for reclaiming bullet.
Above-mentioned purpose of the present utility model technical scheme is that：
Hopkinson pressure bar is launched and bullet recovery system, including testing stand and air chamber, and bottom is provided with the testing stand
Emission cavity, the transmitting tube being connected with emission cavity, the high pressure breather pipe for being connected air chamber and emission cavity are disposed with seat, base
Bullet, the high pressure ventilation are provided with road, incident bar, the buffer unit of transmission bar and spacing transmission bar, the emission cavity
Three-way connection is provided with pipeline, another joint of the three-way connection connects a vavuum pump by exhaust tube.
By using above-mentioned technical proposal, buffer unit is used to absorb the impulsive force on transmission bar, prevents transmission bar to be held
The impulsive force received is excessive with destructive test platform, and bullet is arranged in emission cavity to be pressurized to beat bullet by air chamber to emission cavity
Enter transmitting tube, realize the effect of ballistic projections, it is dynamic to transmitting by vacuum pump gas and three-way connection when needing to reclaim bullet
Pipe applies negative pressure, reclaims bullet so as to realize, in the presence of inertia, bullet is recovered in emission cavity automatically.
Improved as of the present utility model, the emission cavity is provided with permeability cell, the permeability cell connects high pressure breather pipe
Road, the whole body of the permeability cell is provided with some stomatas.
By using above-mentioned technical proposal, emission cavity is pressurized by the permeability cell for connecting high pressure breather line, and
The whole body of breather pipe sets stomata, makes pressurized effect more preferably.
Improved as of the present utility model, the permeability cell is provided with cushion pad towards one section of incident bar.
By using above-mentioned technical proposal, the setting of cushion pad can play buffering when incident bar is being returned in emission cavity
Effect, prevents incident bar from directly hitting, deforms permeability cell.
Improved as of the present utility model, the cushion pad is rubber blanket.
By using above-mentioned technical proposal, cushion pad is set to rubber blanket, economic and practical.
Improved as of the present utility model, be also disposed with the high pressure breather line manually-operated gate, pressure regulator valve with
And pneumatic ball valve.
By using above-mentioned technical proposal, the setting of manually-operated gate, which is played, prevents the situation of air chamber gas leakage from occurring, pressure regulator valve
The pressure that regulation air chamber applies to emission cavity, pneumatic ball valve realizes the effect automatically controlled, and with snap action, reaction speed is fast
Advantage.
Improved as of the present utility model, the transmitting tube launches the length that the distance between bar is less than bullet with described.
By using above-mentioned technical proposal, the distance between transmitting tube and incident bar are less than to the length of bullet, son is prevented
Play completely out transmitting tube.
In summary, the utility model has the advantages that：Postive stop baffle is used to transmission bar being fixed on testing stand
On, bullet is arranged in emission cavity to be pressurized so as to which bullet is squeezed into transmitting tube by air chamber to emission cavity, realizes ballistic projections
Effect, it is when needing to reclaim bullet, vavuum pump is pneumatic to transmitting tube application negative pressure, bullet is reclaimed so as to realize, in inertia
In the presence of, bullet is recovered in emission cavity automatically.
Brief description of the drawings
Fig. 1 is transmitting and bullet recovery system axonometric drawing；
Fig. 2 is the A portions enlarged drawing in Fig. 1；
Fig. 3 is the phantom of transmitting and bullet recovery system；
B portions enlarged drawing during Fig. 4 in Fig. 3.
In figure, 1, testing stand；2nd, air chamber；3rd, base；4th, emission cavity；41st, permeability cell；421st, stomata；422nd, circular baffle plate；
423rd, cushion pad；5th, transmitting tube；51st, three-way connection；6th, high pressure breather line；61st, manually-operated gate；62nd, pressure regulator valve；63rd, it is pneumatic
Ball valve；7th, vavuum pump；71st, exhaust tube；8th, bullet；9th, buffer unit；10th, transmission bar；11st, incident bar.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1-2, Hopkinson pressure bar transmitting and bullet recovery system, including testing stand 1, air chamber 2, be arranged on examination
The base 3 tested on platform 1 and emission cavity 4 on the base 3 is fixedly installed, the transmitting tube 5 that is connected with emission cavity 4, air chamber 2 is connected
With the buffer unit 9 of the high pressure breather line 6 of emission cavity 4, incident bar 11, transmission bar 10 and spacing transmission bar 10, the buffering
Device 9 is set to cylinder.Wherein, the hand as master switch is disposed with high pressure breather line 6 close to the position of emission cavity 4
The pressure regulator valve 62 of air pressure, the gases at high pressure entrance controlled in high pressure breather line 6 in movable valve 61, regulation high pressure breather line 6
The pneumatic ball valve 63 and three-way connection 51 of emission cavity 4, the joint that the two of which of three-way connection 51 is relative access high pressure breather pipe
Road 6, another joint of three-way connection 51 connects an exhaust tube 71, and the other end of exhaust tube 71 is fixedly connected with a vavuum pump
7.Wherein, source of the gas, the connection source of the gas of air chamber 2 are provided with testing stand.The transmitting and bullet recovery system are used to launch Hopkinson
Bullet 8 in strut device, the internal diameter of its neutron bomb 8 is less than the internal diameter of transmitting tube 5, and the length of bullet 8 is more than transmitting tube 5
The distance between with incident bar 11.
As shown in Figure 3-4, it is provided with emission cavity 4 uniform on the permeability cell 41 of stainless steel, the side of permeability cell 41
Some stomatas 421 are laid with, simplification herein is set to 12 stomatas 421, wherein every three stomatas 421 are one group, every group of stomata
421 uniformly arrange along the length direction of permeability cell 41.The position that high pressure breather line 6 is connected with emission cavity 4 is set to air vent,
One end of permeability cell 41 is fixedly connected on the inwall of emission cavity 4 and set with air vent UNICOM, and the other end of permeability cell 41 is consolidated
Surely the circular baffle plate 422 of stainless steel is provided with, circular baffle plate 422 is fixedly installed rubber in the one side of permeability cell 41
The cushion pad 423 of material.Emission cavity 4 and the position of the UNICOM of transmitting tube 5 are set to launch hole, the transmitting and bullet recovery system institute
The initial position of the bullet 8 of transmitting is：One end of bullet 8 abuts cushion pad 423, and the other end is located at transmitting tube 5 through launch hole
It is interior.
When needing to use the transmitting and bullet recovery system, manually-operated gate 61 is opened first, pressure regulator valve is then adjusted
62, the air pressure in high pressure breather line 6 is reached preset value, finally control pneumatic ball valve 63 to open, make in high pressure breather line 6
Gases at high pressure moment enter emission cavity 4.Gases at high pressure into emission cavity 4 are acted on bullet 8, bullet 8 is got hair
Chamber 4 is penetrated, and through 5 dozens of other positions in Hopkinson pressure bar of transmitting tube, completes the transmitting of bullet 8.
The effect of three-way connection 51 is：When the emission bullet 8 of emission cavity 4, bullet 8 acts on Hope's gold by transmitting tube 5
Behind other positions of gloomy depression bar, bullet 8 can be rested in transmitting tube 5 and positioned at the position close to the free end of transmitting tube 5, now opened
Dynamic vavuum pump 7, then the air pressure in high pressure breather line 6 can be in negative pressure state in the presence of vavuum pump 7, and then make emission cavity
Negative pressure state, air pressure and air that bullet 8 can be in emission cavity 4 and in transmitting tube 5 are also in 4 with the air pressure in transmitting tube 5
Moved under the collective effect of pressure to emission cavity 4 at a high speed, eventually pass back to initial position, complete the automatic recovery of bullet 8 with loading.
This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability
Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but
As long as all being protected in right of the present utility model by Patent Law.
Claims (6)
1. Hopkinson pressure bar is launched and bullet recovery system, including testing stand（1）And air chamber（2）, it is characterised in that：The examination
Test and base is provided with platform（3）, base（3）On be disposed with emission cavity (4), the transmitting tube being connected with emission cavity (4)（5）、
Connect air chamber（2）And emission cavity（4）High pressure breather line（6）, incident bar, transmission bar（10）And spacing transmission bar（10）'s
Buffer unit（9）, the emission cavity (4) is interior to be provided with bullet (8), the high pressure breather line（6）On be provided with three-way connection
（51）, another joint of the three-way connection (51) passes through exhaust tube (71) and connects a vavuum pump (7).
2. Hopkinson pressure bar transmitting according to claim 1 and bullet recovery system, it is characterised in that：The emission cavity
(4) permeability cell (41), permeability cell (41) the connection high pressure breather line (6), the whole body of the permeability cell (41) are provided with
It is provided with some stomatas (421).
3. Hopkinson pressure bar transmitting according to claim 2 and bullet recovery system, it is characterised in that：The permeability cell
(41) one section of incident bar is provided with cushion pad (423).
4. Hopkinson pressure bar transmitting according to claim 3 and bullet recovery system, it is characterised in that：The cushion pad
(423) it is rubber blanket.
5. Hopkinson pressure bar transmitting according to claim 1 and bullet recovery system, it is characterised in that：The high pressure is led to
Manually-operated gate (61), pressure regulator valve (62) and pneumatic ball valve (63) are also disposed with feed channel (6).
6. Hopkinson pressure bar transmitting according to claim 1 and bullet recovery system, it is characterised in that：The transmitting tube
(5) it is less than the length of bullet (8) with the distance between the incident bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720068224.5U CN206523379U (en) | 2017-01-19 | 2017-01-19 | Hopkinson pressure bar is launched and bullet recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720068224.5U CN206523379U (en) | 2017-01-19 | 2017-01-19 | Hopkinson pressure bar is launched and bullet recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206523379U true CN206523379U (en) | 2017-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720068224.5U Active CN206523379U (en) | 2017-01-19 | 2017-01-19 | Hopkinson pressure bar is launched and bullet recovery system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333040A (en) * | 2018-02-01 | 2018-07-27 | 石家庄铁道大学 | A kind of Hopkinson pressure bar gas big gun transmitting tube for capableing of automatic Loading bullet |
| CN108548735A (en) * | 2018-05-23 | 2018-09-18 | 东北大学 | A kind of Hopkinson pressure bar bullet electromagnetism retracting device |
| CN109323938A (en) * | 2018-11-23 | 2019-02-12 | 浙江大学 | A kind of multistage bullet automatic Loading emitter applied to Hopkinson pressure bar |
| CN110470551A (en) * | 2019-09-04 | 2019-11-19 | 湖北文理学院 | A kind of SHPB experimental rig and its emitter and control method |
| CN110926968A (en) * | 2019-11-21 | 2020-03-27 | 中国飞机强度研究所 | Improved SHPB test device |
| CN111426582A (en) * | 2020-03-03 | 2020-07-17 | 天津大学 | Device for realizing single-pulse loading test in Hopkinson pressure bar |
| CN111579749A (en) * | 2020-05-11 | 2020-08-25 | 煤炭科学技术研究院有限公司 | Coal and gas outburst power induction experimental device and method |
| CN114166617A (en) * | 2021-11-09 | 2022-03-11 | 武汉理工大学 | Hopkinson pressure bar transmitting device based on electromagnetic coil |
-
2017
- 2017-01-19 CN CN201720068224.5U patent/CN206523379U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333040A (en) * | 2018-02-01 | 2018-07-27 | 石家庄铁道大学 | A kind of Hopkinson pressure bar gas big gun transmitting tube for capableing of automatic Loading bullet |
| CN108333040B (en) * | 2018-02-01 | 2020-11-10 | 石家庄铁道大学 | Hopkinson pressure bar air cannon launching tube capable of automatically loading bullets |
| CN108548735A (en) * | 2018-05-23 | 2018-09-18 | 东北大学 | A kind of Hopkinson pressure bar bullet electromagnetism retracting device |
| CN108548735B (en) * | 2018-05-23 | 2024-04-16 | 东北大学 | Hopkinson pressure bar bullet electromagnetic recovery device |
| CN109323938A (en) * | 2018-11-23 | 2019-02-12 | 浙江大学 | A kind of multistage bullet automatic Loading emitter applied to Hopkinson pressure bar |
| CN109323938B (en) * | 2018-11-23 | 2024-02-20 | 浙江大学 | Multi-stage bullet automatic loading and launching device applied to Hopkinson pressure bar |
| CN110470551A (en) * | 2019-09-04 | 2019-11-19 | 湖北文理学院 | A kind of SHPB experimental rig and its emitter and control method |
| CN110470551B (en) * | 2019-09-04 | 2022-06-21 | 湖北文理学院 | SHPB test device and transmitting device and control method thereof |
| CN110926968A (en) * | 2019-11-21 | 2020-03-27 | 中国飞机强度研究所 | Improved SHPB test device |
| CN111426582A (en) * | 2020-03-03 | 2020-07-17 | 天津大学 | Device for realizing single-pulse loading test in Hopkinson pressure bar |
| CN111579749A (en) * | 2020-05-11 | 2020-08-25 | 煤炭科学技术研究院有限公司 | Coal and gas outburst power induction experimental device and method |
| CN114166617A (en) * | 2021-11-09 | 2022-03-11 | 武汉理工大学 | Hopkinson pressure bar transmitting device based on electromagnetic coil |
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