CN201673095U - Bullet fired cylinder for Hopkinson pressure bar - Google Patents
Bullet fired cylinder for Hopkinson pressure bar Download PDFInfo
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- CN201673095U CN201673095U CN2010201690995U CN201020169099U CN201673095U CN 201673095 U CN201673095 U CN 201673095U CN 2010201690995 U CN2010201690995 U CN 2010201690995U CN 201020169099 U CN201020169099 U CN 201020169099U CN 201673095 U CN201673095 U CN 201673095U
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Abstract
The utility model relates to a bullet fired cylinder for a Hopkinson pressure bar, belonging to the field of a material dynamic property testing device. The utility model aims at providing a bullet fired cylinder which has high operating efficiency and good safety performance, and comprises a left and a right end covers, a hollow valve rod and a cylinder body, wherein the cylinder body of the fired cylinder is internally divided into a left and a right fired air chambers by a middle transparent cover; one side of a valve hole on the middle transparent cover is connected with an air pipe into a whole body along the axial direction, and the other end of the air pipe is arranged in a round hole in the right end cover and is communicated with an air pipe fixed on a flange on the right end cover; one end of a bullet pipe is connected in the air pipe of the flange by screw thread; a jacking air chamber and a control air chamber which are separated by a piston are arranged between the left fired air chamber of the cylinder body and the left end cover; the end surface at the right side of the piston is connected with the hollow valve rod into a whole body; the other end of the hollow valve rod is matched with the valve hole in the middle of the transparent cover in a sealing way; the left end cover is provided with an air inlet and an air outlet; and the cylinder body of the control air chamber is provided with the air inlet.
Description
Technical field
The utility model relates to material dynamic performance proving installation field, specifically, is the bullet emission cylinder that is used for the Hopkinson pressure bar test macro.
Background technology
Most of materials are at the LOADING RATES or the strain rate sensitivity that all show aspect the mechanical properties such as intensity to a certain degree, the strain rate effect of the short duration pulse of high amplitude and the caused mechaanical property of materials of load is very important for the structural design and the analysis of anti-dynamic load.These dynamic loads are from many military and civilian incidents such as conventional weapon penetration and blast, occasional burst and high-speed impacts.Hopkinson pressure bar is acknowledged as the experimental facilities of the mechaanical property of materials under the most effective the most frequently used research pulse dynamic load effect at present.Its application develops into the dynamic mechanical of multiple materials such as in-site measurement rock, concrete, pottery, superpolymer, explosive, solid push agent, plastics, compound substance, foamed material, vibration-absorptive material, tack coat, fiber from the dynamic mechanical of initial measurement metal.Be not only applicable to compression test, can also successfully stretch and shear test, and expand to have acceleration, power and pressure sensor calibrating function.
Bullet emission cylinder is the important component part of Hopkinson pressure bar.The disclosed Pneumatic power bullet transmission cylinder that is used for material dynamic performance experiment of Chinese patent 200910116213.X, it is divided into left and right two by middle through cover with the emission gas chamber in the transmission cylinder, speed requirement according to emission bullet, carry out switching controls by the ball valve that is arranged in the middle through cover, and valve rod is designed to hollow-core construction, alleviated the weight of valve rod self, the dirigibility that has improved valve stem slides.But the control gas chamber of its setting is because volume is less, and the area of the direct pushing tow valve rod of pilot-gas is also less, and it is low to cause valve rod to close and open on the middle through cover operational efficiency of valve opening, and security is relatively poor.
Summary of the invention
The purpose of this utility model is to provide a kind of operational efficiency height, the bullet emission cylinder that is used for Hopkinson pressure bar that security performance is good.
Its technical scheme is: a kind of bullet emission cylinder that is used for Hopkinson pressure bar, comprise by left and right end cap, and be divided into left and right two emission gas chamber by middle through cover in the transmission cylinder that hollow valve rod and cylinder body constitute, the cylinder body of transmission cylinder; The square section of middle through cover is the T-shape that side is fallen, axially offer through hole on the middle through cover by ball valve control, a side shaft of valve opening is to disjunctor one tracheae on the middle through cover, and the tracheae other end places in the circular hole of offering in the right end cap, and is communicated with the tracheae of flange on being fixed on right end cap; Bomb tube one end is by in the tracheae that is threaded in flange; It is characterized in that: be provided with pushing tow air chamber and the control air chamber separated by piston between described cylinder body left side emission gas chamber and the left end cap, the end face on piston right side and hollow valve rod disjunctor, the other end of hollow valve rod can be sealed and matched with the valve opening on the middle through cover; Offer air intake opening and exhausr port on the left end cap, offer air intake opening on the cylinder body of control air chamber.
The hollow core valve rod end that valve opening on above-mentioned and the middle through cover is sealed and matched is taper.
Its technique effect is: owing to be provided with pushing tow air chamber and the control air chamber of being separated by piston between cylinder body left side emission gas chamber and left end cap, so make valve stem seal close valve opening on the middle through cover to pushing tow air chamber injecting gas after, to the gas of control air chamber injection with pushing tow air chamber same pressure, guarantee the hermetically closing of valve rod and valve opening, increased the security of equipment; During emission bullet, open the exhausr port of pushing tow air chamber, under control air chamber pressure by air pressure, the gas of pushing tow air chamber is squeezed away fast, and the valve rod of promotion and piston disjunctor slides left fast, make the awl end of valve rod hightail valve opening on the middle through cover, be stored in gas in the emission gas chamber and promote outwards emission fast of bullet in the bomb tube, efficient height, speed that valve rod moves are fast.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, be used for the bullet emission cylinder of Hopkinson pressure bar, comprise, be divided into left and right two emission gas chamber 9,13 by middle through cover 11 in the transmission cylinder that hollow valve rod 15 and cylinder body constitute, the cylinder body of transmission cylinder by left and right end cap 2,14; The square section of middle through cover is the T-shape that side is fallen, cover the through hole that axially offers by ball valve 10 controls thoroughly, a side shaft of valve opening 17 is to disjunctor one tracheae on the middle through cover, and the tracheae other end places in the circular hole of offering in the right end cap, and is communicated with the tracheae of flange 18 on being fixed on right end cap; Bomb tube 19 1 ends are by in the tracheae that is threaded in flange.Be provided with pushing tow air chamber 5 and the control air chamber 6 separated by piston 3 between cylinder body left side emission gas chamber 9 and the left end cap 2, the end face on piston right side and hollow valve rod 15 disjunctors, the other end of hollow valve rod can be sealed and matched with the valve opening 17 in the middle of the saturating lid 11; Offer air intake opening 4 and exhausr port 1 on the left end cap, offer air intake opening 20 on the cylinder body of control air chamber.
Hollow valve rod 15 ends that valve opening on above-mentioned and the middle through cover is sealed and matched are taper.
Above-mentioned left and right end cap, cylinder body, piston, valve rod, middle through cover, the centerline of flange and bomb tube is on same axis.The pushing tow air chamber, control air chamber and left and right two emission gas chamber independently make, and by O-ring seal and bolt, nut each several part are connected into whole one.
Its principle of work and step are as follows:
1, sets the required air pressure of Hopkinson pressure bar experiment, close the vent port 1 on the left end cap, open gas cylinder air-flow gauge tap, gases at high pressure enter pushing tow air chamber 5 by air intake opening 4, gas promotes to slide to right-hand member with the valve rod 15 of piston 3 disjunctors, the tapered end face of valve rod and the valve opening 17 on the middle through cover 11 are closed, close air intake opening 4;
2, the identical air pressure of setting and pushing tow air chamber 5, open the air intake opening 20 of control air chamber 6, gas enters the control air chamber, because 2 air chambers air pressure is identical, so gas can not promote valve rod with the piston disjunctor and slides left and open valve opening emission bullet on the middle through cover in the control air chamber, has increased the security of equipment.
3, set the air pressure that emission gas chamber needs, open the air intake opening 8 of left side emission gas chamber 9, gas enters the emission air chamber, to the gaseous tension of setting, closes air intake opening;
4, open the exhausr port of pushing tow air chamber, under control air chamber pressure by air pressure, the gas of pushing tow air chamber is squeezed away fast, and the valve rod of promotion and piston 3 disjunctors slides left fast, open the valve opening on the middle through cover rapidly, the bullets that are stored in the gas promotion bomb tube 19 in the emission gas chamber are outwards launched.
According to the length and the rate request of body, whether decision opens the emission cylinder body cuts apart valve (10) and expands the emission gas volume.
Claims (2)
1. a bullet emission cylinder that is used for Hopkinson pressure bar comprises by left and right end cap, is divided into left and right two emission gas chamber by middle through cover in the transmission cylinder that hollow valve rod and cylinder body constitute, the cylinder body of transmission cylinder; The square section of middle through cover is the T-shape that side is fallen, axially offer through hole on the middle through cover by ball valve control, a side shaft of valve opening is to disjunctor one tracheae on the middle through cover, and the tracheae other end places in the circular hole of offering in the right end cap, and is communicated with the tracheae of flange on being fixed on right end cap; Bomb tube one end is by in the tracheae that is threaded in flange; It is characterized in that: be provided with pushing tow air chamber (5) and the control air chamber (6) separated by piston (3) between described cylinder body left side emission gas chamber (9) and the left end cap (2), the end face on piston right side and hollow valve rod (15) disjunctor, the other end of hollow valve rod can be sealed and matched with the valve opening (17) in the middle of the saturating lid (11); Offer air intake opening (4) and exhausr port (1) on the left end cap, offer air intake opening (20) on the cylinder body of control air chamber.
2. the bullet emission cylinder that is used for Hopkinson pressure bar according to claim 1 is characterized in that: hollow valve rod (15) end that the valve opening (17) on described and the middle through cover (11) is sealed and matched is taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201690995U CN201673095U (en) | 2010-04-23 | 2010-04-23 | Bullet fired cylinder for Hopkinson pressure bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201690995U CN201673095U (en) | 2010-04-23 | 2010-04-23 | Bullet fired cylinder for Hopkinson pressure bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201673095U true CN201673095U (en) | 2010-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201690995U Expired - Fee Related CN201673095U (en) | 2010-04-23 | 2010-04-23 | Bullet fired cylinder for Hopkinson pressure bar |
Country Status (1)
| Country | Link |
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| CN (1) | CN201673095U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076223A (en) * | 2012-12-30 | 2013-05-01 | 南京理工大学 | Launcher based on Hopkinson pull rod test equipment |
| CN104677724A (en) * | 2015-02-13 | 2015-06-03 | 洛阳利维科技有限公司 | Sealing device for piston in pneumatic type Hopkinson equipment emitting device |
| CN104713771A (en) * | 2015-02-12 | 2015-06-17 | 洛阳利维科技有限公司 | Launcher of Hopkinson equipment |
| CN106226022A (en) * | 2016-08-31 | 2016-12-14 | 济南市人防建筑设计研究院有限责任公司 | A kind of underground civil defense engineering anti-nuclear blast experimental system for simulating and experimental technique |
| CN106990001A (en) * | 2017-04-13 | 2017-07-28 | 华中科技大学 | A kind of impact energy control and detection means |
| KR102013393B1 (en) * | 2019-02-13 | 2019-08-22 | 국방과학연구소 | Multi-purpose high strain rate material testing machine |
| CN112763306A (en) * | 2019-11-04 | 2021-05-07 | 西南交通大学 | Hopkinson pull rod transmitting device |
-
2010
- 2010-04-23 CN CN2010201690995U patent/CN201673095U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076223A (en) * | 2012-12-30 | 2013-05-01 | 南京理工大学 | Launcher based on Hopkinson pull rod test equipment |
| CN104713771A (en) * | 2015-02-12 | 2015-06-17 | 洛阳利维科技有限公司 | Launcher of Hopkinson equipment |
| CN104677724A (en) * | 2015-02-13 | 2015-06-03 | 洛阳利维科技有限公司 | Sealing device for piston in pneumatic type Hopkinson equipment emitting device |
| CN104677724B (en) * | 2015-02-13 | 2017-07-04 | 洛阳利维科技有限公司 | The sealing ring of piston in a kind of pneumatic type Hopkinson equipment emitter |
| CN106226022A (en) * | 2016-08-31 | 2016-12-14 | 济南市人防建筑设计研究院有限责任公司 | A kind of underground civil defense engineering anti-nuclear blast experimental system for simulating and experimental technique |
| CN106990001A (en) * | 2017-04-13 | 2017-07-28 | 华中科技大学 | A kind of impact energy control and detection means |
| CN106990001B (en) * | 2017-04-13 | 2019-05-03 | 华中科技大学 | A kind of control of impact energy and detection device |
| KR102013393B1 (en) * | 2019-02-13 | 2019-08-22 | 국방과학연구소 | Multi-purpose high strain rate material testing machine |
| CN112763306A (en) * | 2019-11-04 | 2021-05-07 | 西南交通大学 | Hopkinson pull rod transmitting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20110423 |