CN104729364B - A kind of pneumatic separation bullet holder of light-gas gun - Google Patents
A kind of pneumatic separation bullet holder of light-gas gun Download PDFInfo
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- CN104729364B CN104729364B CN201510141347.2A CN201510141347A CN104729364B CN 104729364 B CN104729364 B CN 104729364B CN 201510141347 A CN201510141347 A CN 201510141347A CN 104729364 B CN104729364 B CN 104729364B
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Abstract
The present invention relates to a kind of pneumatic separation bullet holder of light-gas gun, it is therefore an objective to for solving the problem that existing bullet holder needs to take attachment device that bullet holder is easily separated and effect is undesirable, cost increases.The present invention is made up of pop-up lobe, subiculum lobe and base plate；Pop-up lobe is two corresponding semicylinders with subiculum lobe.Pop-up lobe center has upper half bullet hole, and hollow structure is drawn in centre；Subiculum lobe constitutes an entirety with base plate, and center has lower half bullet hole, and hollow structure is drawn in centre；Base plate is carved with two seals groove.The upper half bullet hole of pop-up lobe is corresponding with the lower half bullet hole of subiculum lobe, pop-up lobe semicircle is scarce to be engaged with subiculum lobe boss, when not additional segregation apparatus, the air drag utilizing target chamber realizes being automatically separated of bullet holder and bullet, has the outer trajectory performance improving bullet and reduces the feature of launch cost.
Description
Technical field
The invention belongs to blast and shock dynamics field, be specifically related to the improvement of a kind of light-gas gun bullet holder structure.
Background technology
The effect of bullet holder is that bullet rises centering guiding function in gun tube, transmission high-pressure gas pressure, makes bullet obtain relatively high initial speed, and departs from bullet going out gun muzzle in the process hit target, make it have good outer trajectory performance, to avoid bullet holder kinetic energy to be loaded into further on bullet.Existing method mainly takes additional segregation apparatus to be easily separated, and the subject matter that this technology exists has: additional separation method is to arrange machinery between gun tube and target chamber, makes bullet holder broken apart by clashing into.The fragment formed after separation still can follow up and act on again on bullet, affects the outer trajectory performance of bullet.This kind of device endoporus requires higher with gun tube axiality, and additional segregation apparatus adds the complexity of light-gas gun system simultaneously, takies target chamber space, also needs to change easily worn part, improve launch cost after test of many times.
Summary of the invention
For solving existing light-gas gun separation of the projectile seat difficulty, need to be easily separated and inferior separating effect by means of other machinery, the technical problem that light-gas gun system structure is complicated, the present invention provides a kind of pneumatic separation bullet holder, goes out gun muzzle and can realize being automatically separated of bullet holder and bullet launching bullet in target process smoothly to hitting.
Technical scheme is as follows:
A kind of pneumatic separation bullet holder of light-gas gun, it is characterized in that and includes pop-up lobe, subiculum lobe and base plate, described pop-up lobe, subiculum lobe are interlocked and form the cylinder that external diameter matches with gun tube internal diameter, described cylinder offers the bullet hole of gas eddy structure and blind hole shape along its length from front to back, described gas eddy structure is the first cavity offered backward from cylinder front end, the size of described first cavity tapers into backward from cylinder front end, and described base plate is arranged on the rear end of cylindrical bottom.
Being more than the basic technical scheme of the present invention, based on this technical scheme, the present invention can also make down following improvement:
The pneumatic separation bullet holder of above-mentioned light-gas gun also includes the second cavity offered along cylinder length direction, and the radial dimension of described second cavity is more than the diameter in bullet hole, and described second cavity and the first cavity and cylindrical rear end all have a segment distance.
The axis of above-mentioned first cavity, bullet hole and the second cavity all with cylindrical dead in line.This restriction is primarily to the axiality after guarantee bullet assembles with gun tube and whole transmitting bullet symmetry of stress in gun tube running.
Above-mentioned first cavity be shaped as revolving body, the bus of revolving body is camber line or straight line, and bus is camber line or straight line is based on processing complexity and considers.
The camber line bus of above-mentioned revolving body is tangent with cylinder, and the angle of its string and cylindrical body outer wall is 30 °～45 °；The rectilinear generatrix of described revolving body and the angle of cylindrical body outer wall are 30 °～45 °.This structure qualification mainly considers aeroperformance and the structural strength of the first cavity, if angle is too little, front-end-cone angle part intensity is likely to not, and the separation force of the too big generation of angle is limited, can not realizing well separating, this angle is feasible by verification experimental verification.
Above-mentioned second cavity cylindrically shaped.Second cavity can adopt other shape, bus be outwards recessed or the camber line to convex and the straight line with angle can, this cylindric passive weight being mainly used in reducing bullet holder, in separation process, form the second gas eddy simultaneously, accelerate separation of the projectile seat.
Above-mentioned pop-up lobe includes semicircle and lacks, and described semicircle lacks the rear end being arranged on pop-up lobe, and described subiculum lobe includes the boss adaptive with semicircle phase shortage, and described pop-up lobe is buckled into cylinder with being lacked by semicircle of subiculum lobe with coordinating of boss.Pop-up lobe and subiculum lobe must be buckled into one complete cylindric, but other form can be adopted to realize.Subiculum lobe can be raised line, and pop-up lobe can be the groove matched.
Described base plate constitutes an entirety with subiculum lobe.
Above-mentioned base plate is provided with at least one hoop seal groove.
Above-mentioned pop-up lobe, subiculum lobe and base plate material are nylon.
Advantages of the present invention is as follows:
1, gas eddy structure of the present invention can quickly respond air drag, forms high pressure gas eddy in front end, produces separation force radially, it is achieved being automatically separated of upper and lower supporter lobe and base plate；
2, the present invention is while ensureing to play holder structure intensity, radial component is drawn into hollow structure, alleviates bullet holder passiveness weight, concurrently separate and can also form additional gas eddy in process, be further exacerbated by the separation of bullet holder；
3, subiculum lobe is constituted an entirety with base plate by the present invention, and base plate incidentally separates when subiculum lobe separates, and does not need to take extra way that base plate is easily separated again；
4, the present invention designs two seals groove, solves the problem that single track seals gas leakage.
5, bullet holder of the present invention adopts high specific strength material nylon as material of main part, had both alleviated the passive weight of bullet holder, and in turn ensure that the structural strength of bullet holder simultaneously；
6, the present invention is by changing bullet bore dia and axial length, it is possible to be suitable for various sizes of bullet, highly versatile.
Accompanying drawing explanation
Fig. 1 is 130mm light-gas gun pneumatic separation bullet holder three dimensional structure schematic diagram；
Fig. 2 is 130mm light-gas gun pneumatic separation bullet holder two dimensional cross-section schematic diagram；
Fig. 3 is assembling schematic diagram in 130mm light-gas gun pneumatic separation bullet holder gun tube；
Fig. 4 is that the pneumatic separation bullet holder of 130mm light-gas gun is initially separated schematic diagram；
Fig. 5 is that the pneumatic separation bullet holder of 130mm light-gas gun separates schematic diagram further；
Fig. 6 is the another kind of fastening structure of light-gas gun of the present invention pneumatic separation bullet holder.
Accompanying drawing labelling is as follows: 1-pop-up lobe, 2-subiculum lobe, 3-base plate, 4-upper half bullet hole, 5-lower half bullet hole, 6-upper half hollow structure, 7-lower half hollow structure, 8-seal groove, 9-semicircle lacks, 10-boss, 11-upper half gas eddy structure, 12-lower half gas eddy structure, 13-bullet, 14-sealing ring, 15-gun tube, 16-gases at high pressure, 17-gun tube front end, 18-air drag, 19-gas eddy, 20-holds in the palm lobe outer surface air-flow, 21-raised line, 22-groove.
Detailed description of the invention
Bullet holder is the structural member that a stress is very complicated, by the thrust of gases at high pressure, drives bullet to entrust ball of moving at chamber inner movement.Bullet holder must have certain emissive porwer, it is ensured that keeps complete under gun pressure extreme conditions, will not break, and so could correctly guide bullet to move at gun tube.Bullet holder is the vitals launching bullet, but it belongs to " non-fight parts ", and its weight is passive weight, so in the design process of bullet holder, when ensureing emissive porwer, from structure and material, should reduce its passive weight to greatest extent.
Based on above-mentioned consideration, the present invention is pneumatic, and a point lobe hollow shape is taked in separation bullet holder, one gas eddy structure of Front-end Design, launch bullet go out gun muzzle rear-guard move holder separate with bullet, mid portion is drawn into hollow structure simultaneously, reduce the passive weight of bullet holder and aggravate to separate, utilizing air drag can realize being automatically separated at high speeds, and separation process has substantially no effect on the outer trajectory performance of bullet.
Embodiment one: (referring to Fig. 1, Fig. 2) the present embodiment is made up of pop-up lobe 1, subiculum lobe 2 and base plate 3；Pop-up lobe 1 is two corresponding semicylinders with subiculum lobe 2, and pop-up lobe 1 Front-end Design has gas eddy structure 11, and center has bullet hole 4；Subiculum lobe 2 and base plate 3 constitute an entirety, and base plate is necessary in the present invention, play the effect of transmission high-pressure gas pressure, and subiculum lobe 2 Front-end Design has the gas eddy structure 12 corresponding with pop-up lobe 1, and center has bullet hole 5；Base plate 3 is carved with two seal grooves 8.The upper half bullet hole 4 of pop-up lobe 1 is corresponding with the lower half bullet hole 5 of subiculum lobe 2, and pop-up lobe 1 semicircle lacks 9 and engages with subiculum lobe 2 boss 10.Described pop-up lobe 1, subiculum lobe 2 and base plate 3 material are nylon.
Embodiment two: (referring to Fig. 2) the present embodiment difference from a upper embodiment is in that, the structure line of the gentle vortex structure 12 of gas eddy structure 11 can be straight line and camber line.Straight line is 30 °～45 ° with holder lobe outer wall angle；Camber line is tangent with holder lobe outer wall, and its string is 30 °～45 ° with holder lobe outer wall angle.
Embodiment three: (referring to Fig. 1, Fig. 2) the present embodiment three difference from embodiment one is in that, is drawn into hollow structure 6 in the middle of pop-up lobe 1, is drawn into the hollow structure 7 corresponding with pop-up lobe 1 in the middle of subiculum lobe 2.
Embodiment four: the difference of (referring to Fig. 1, Fig. 6) the present embodiment and embodiment one is in that, pop-up lobe must be buckled into subiculum lobe that complete columned mode is different, and subiculum lobe is raised line 21, and pop-up lobe is the groove 22 matched with raised line.
Operation principle: being made up of as it is shown on figure 3, launch bullet bullet and bullet holder, integral installation is assigned in gun tube, relies on the constraint of gun tube that upper and lower supporter lobe is engaged, and gun tube front end is evacuated environment.After light-gas gun starts firing order, play backing portion and be subject to the effect of gases at high pressure, promote and launch bullet accelerated motion in gun tube.As shown in Figure 4, launching after ejecting gun muzzle, according to aerodynamic principle, air drag enters in gas eddy structure, and flow velocity reduces and forms gas eddy；Holder lobe outer surface air drag is uninfluenced, and flow velocity is basically unchanged.Therefore, gas eddy structure can form the high pressure of a relative holder lobe outer wall, produce tension force radially and axial resistance so that pop-up lobe and subiculum lobe open respectively up and down, form the bigger angle of departure, and are axially separated.Air-flow travels further in hollow structure, also can produce high pressure gas eddy, aggravates the separation of upper and lower two holder lobes.As it is shown in figure 5, in flight course, under air drag effect, bullet separates further with bullet holder, as long as gun muzzle is enough with the spacing of target plate, bullet can thoroughly break away from bullet holder constraint, ensureing after projectile impacts on target, bullet holder kinetic energy will not be loaded on bullet again, affects the outer trajectory performance of bullet.
Claims (9)
1. the pneumatic separation bullet holder of light-gas gun, it is characterized in that: include pop-up lobe, subiculum lobe and base plate, described pop-up lobe, subiculum lobe are interlocked and form the cylinder that external diameter matches with gun tube internal diameter, described cylinder offers the bullet hole of gas eddy structure and blind hole shape along its length from front to back, described gas eddy structure is the first cavity offered backward from cylinder front end, the size of described first cavity tapers into backward from cylinder front end, and described base plate is arranged on the rear end of cylindrical bottom；
The pneumatic separation bullet holder of described light-gas gun also includes the second cavity offered along cylinder length direction, and the radial dimension of described second cavity is more than the diameter in bullet hole, and described second cavity and the first cavity and cylindrical rear end all have a segment distance.
2. the pneumatic separation bullet holder of light-gas gun according to claim 1, it is characterised in that: the axis of described first cavity, bullet hole and the second cavity all with cylindrical dead in line.
3. the pneumatic separation bullet holder of light-gas gun according to claim 2, it is characterised in that: described first cavity be shaped as revolving body, the bus of revolving body is camber line or straight line.
4. the pneumatic separation bullet holder of light-gas gun according to claim 3, it is characterised in that: the camber line bus of described revolving body is tangent with cylinder, and the angle of its string and cylindrical body outer wall is 30 °～45 °；The rectilinear generatrix of described revolving body and the angle of cylindrical body outer wall are 30 °～45 °.
5. the pneumatic separation bullet holder of light-gas gun according to claim 4, it is characterised in that: described second cavity cylindrically shaped.
6. the pneumatic separation bullet holder of light-gas gun according to claim 5, it is characterized in that: described pop-up lobe includes semicircle and lacks, described semicircle lacks the rear end being arranged on pop-up lobe, described subiculum lobe includes the boss adaptive with semicircle phase shortage, and described pop-up lobe is buckled into cylinder with being lacked by semicircle of subiculum lobe with coordinating of boss.
7. the pneumatic separation bullet holder of light-gas gun according to any claim of claim 1-6, it is characterised in that: described base plate constitutes an entirety with subiculum lobe.
8. the pneumatic separation bullet holder of light-gas gun according to claim 7, it is characterised in that: described base plate is provided with at least one hoop seal groove.
9. pneumatic separation bullet holder according to claim 8, it is characterised in that: described pop-up lobe, subiculum lobe and base plate material are nylon.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510141347.2A CN104729364B (en) | 2015-03-27 | 2015-03-27 | A kind of pneumatic separation bullet holder of light-gas gun |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510141347.2A CN104729364B (en) | 2015-03-27 | 2015-03-27 | A kind of pneumatic separation bullet holder of light-gas gun |
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| CN104729364A CN104729364A (en) | 2015-06-24 |
| CN104729364B true CN104729364B (en) | 2016-07-06 |
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| CN100370214C (en) * | 2005-04-29 | 2008-02-20 | 哈尔滨工业大学 | Curve shaped bullet holder in autosegregation |
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| CN102062565B (en) * | 2010-11-08 | 2013-04-03 | 西安近代化学研究所 | Separator for preventing sabot from following |
| CN204240872U (en) * | 2014-11-19 | 2015-04-01 | 哈尔滨工业大学 | The holder of one tooth engagement under water resilient separation bullet |
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