CN103471943B - A kind of Pneumatic acceleration striking experiment method - Google Patents
A kind of Pneumatic acceleration striking experiment method Download PDFInfo
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- CN103471943B CN103471943B CN201310424872.6A CN201310424872A CN103471943B CN 103471943 B CN103471943 B CN 103471943B CN 201310424872 A CN201310424872 A CN 201310424872A CN 103471943 B CN103471943 B CN 103471943B
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Abstract
The invention discloses a kind of Pneumatic acceleration striking experiment method, it is characterized in that, comprise the following steps: (1) installation and adjustment Pneumatic acceleration striking experiment device; (2) installation and adjustment testing tool; (3) inflate to plenum chamber; (4) start testing tool, connect the power supply of solenoid valve simultaneously, large mass impacts body clashes into measured body after accelerating tube accelerates; (5) by testing tool read test result.The present invention not only step is simple, easy to operate, large mass impacts body is reusable, also read multiple dynamic impact parameter by testing tool, therefore can effectively test in 8m/s ~ 80m/s speed (i.e. speed per hour 28.8km ~ 288km) scope, 2kg ~ 5kg weight is to the accidental impact of explosive wastewater, or the harm effect of the unscheduled event such as quality 1kg ~ 5kg object strikes emissive plastic glazing, is therefore applicable to promoting the use of.
Description
Technical field
The present invention relates to a kind of striking experiment method, particularly relate to a kind of Pneumatic acceleration striking experiment method.
Background technology
In explosive wastewater shipping accident or other mishap, gunpowder, explosive, due to large mass objects accidental impact, will cause the mishaies such as burning, blast, cause great casualties and property loss.In addition, the automobile in high-speed cruising, train emissive plastic glazing, also may cause accident due to the accidental impact of certain mass object, cause great casualties and property loss.
In 8m/s ~ 80m/s speed (i.e. speed per hour 28.8km ~ 288km) scope, to reusable, accurately locate the accidental impact of 2kg ~ 5kg weight to explosive wastewater or other materials, or the harm effect of the unscheduled event such as quality 1kg ~ 5kg object strikes emissive plastic glazing, there is no effective method of testing.The current common practice be adopt disposable below 0.5kg little quality bullet with speed higher than the impact test of 80m/s, reusable 5kg large quality hammer below 8m/s speed striking experiment or adopt disposable about 5kg impacting body higher than the striking experiment of 80m/s, such test method cannot easy, accurately and efficiently assessment band configuration explosive wastewater or organic glass at quality 1kg ~ 5kg object with the danger response under 8m/s ~ 80m/s speed accidental impact.
Summary of the invention
The object of the invention is to overcome does not have effective method of testing at present, and usually adopt below 0.5kg little quality bullet with speed higher than the impact test of 80m/s or adopt disposable quality 5kg impacting body at the striking experiment of below 8m/s speed, but, such test method can overcome current method of testing cannot be easy, the defect that efficient assessment band predetermined configuration explosive wastewater or organic glass forms respond with danger during 8m/s ~ 80m/s speed accidental impact at quality 1kg ~ 5kg object, one not only accurate positioning is provided, step is simple, convenient operation, and impacting body is reusable, can effectively test in 8m/s ~ 80m/s speed (i.e. speed per hour 28.8km ~ 288km) scope, 1kg ~ 5kg weight is to explosive wastewater, organic glass forms accidental impact, can also effectively test 5kg object strikes emissive plastic glazing or other materials etc. the Pneumatic acceleration striking experiment method of harm effect of unscheduled event.
Object of the present invention is achieved through the following technical solutions:
A kind of Pneumatic acceleration striking experiment method, comprises the following steps:
(1) installation and adjustment Pneumatic acceleration striking experiment device;
(2) installation and adjustment testing tool;
(3) predetermined pressure gas (except the hazardous gas such as hydrogen) is filled with to plenum chamber;
(4) start testing tool, connect the power supply of solenoid valve simultaneously, large mass impacts body clashes into measured body after accelerating tube accelerates;
(5) by testing tool read test result.
Wherein, in step (4), when measured body front end does not arrange force transmission mechanism, large mass impacts body accelerates and directly clashes into measured body after passing the installing port of anti-explosion tank right-hand member; When measured body front end is provided with force transmission mechanism, large mass impacts body clashes into measured body by transmission rod after accelerating.
Step (1) comprises the following steps:
(1a) debug electromagnetically induced valve, and large mass impacts body is arranged on the precalculated position in accelerating tube;
(1b) debug anti-explosion tank and target plate, and make the vertical relation of the installing port of the maintenance of large mass impacts body and target plate and anti-explosion tank;
(1c) measured body is arranged on stationary fixture;
In order to realize the present invention better, testing tool in step (2) comprises the photoelectricity test instrument testing large mass impacts body speed, the sensor of the dynamic pressure of test suffered by measured body and oscillograph and the signal converter supporting with this sensor, described sensor is then arranged on the measured body in step (1c).
In order to ensure effect, also need when measured body front end is provided with transmission rod force transmission mechanism is installed, and the end face centering of the end face of transmission rod and large mass impacts body is fitted; Described force transmission mechanism is also provided with pulse-width modulator in advance.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) not only accurate positioning, step are simple for Pneumatic acceleration striking experiment method of the present invention, easy to operate, large mass impacts body is reusable, also read multiple dynamic impact parameter by testing tool, therefore can effectively test in 8m/s ~ 80m/s speed (i.e. speed per hour 28.8km ~ 288km) scope, 2kg ~ 5kg weight is to the accidental impact of explosive wastewater, or the harm effect of quality 1kg ~ 5kg object strikes emissive plastic glazing or other materials unscheduled event.
(2) the present invention is by debugging anti-explosion tank and target plate, and make large mass impacts body keep the vertical relation with target plate right side in anti-explosion tank, thus transmission rod is clashed in the path along near linear after impacting body can be made to accelerate, when not using force transmission mechanism, impacting body can directly through the installing port of anti-explosion tank, and then guarantee effect power clashes into the measured body be arranged on target plate with the direction vertical with target plate.
(3) testing tool of the present invention comprises the photoelectricity test instrument testing large mass impacts body speed, the sensor of the dynamic pressure of test suffered by measured body, displacement and the strain amplifier supporting with this sensor, oscillograph, described sensor is then arranged on the measured body in step (1c).Then can be tested by photoelectricity test instrument and show the stroke speed of large mass impacts body, dynamic pressure suffered when measured body is knocked, displacement then can be responded to by sensor, simultaneously, the dynamic pressure that sensor is sensed, displacement information are passed to oscillograph, then can read dynamic pressure information intuitively by oscillograph.
(4) also need force transmission mechanism is installed before installation measured body when measured body front end is provided with force transmission mechanism in experimental technique of the present invention, and the end face of the end face of the transmission rod in force transmission mechanism and large mass impacts body can axis centering be fitted, thus make large mass impacts body effectively can clash into measured body by this transmission rod; Meanwhile, described force transmission mechanism is also provided with pulse-width modulator in advance, by the conveniently adjusted large mass impacts body of this pulse-width modulator to the action time of measured body.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is the one-piece construction schematic diagram of measured body front end of the present invention when being provided with force transmission mechanism.
Wherein, the name corresponding to the Reference numeral in accompanying drawing is called:
1-base, 2-anti-explosion tank, 3-accelerating tube, 4-plenum chamber, 5-large mass impacts body, 6-measured body, 7-target plate, 8-stationary fixture, 9-force transmission mechanism, 10-electromagnetically induced valve, 11-support, 12-force transmission mechanism support.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment 1
As shown in Figure 1, the Pneumatic acceleration striking experiment device that the present invention uses, forms primarily of base 1, described base 1 is also provided with charging assembly.Described charging assembly comprises accelerating tube 3, and for the ease of firmly supporting accelerating tube 3, described base 1 is also provided with support 11, described accelerating tube 3 is fixed on support 11.Meanwhile, in described accelerating tube 3 inside, large mass impacts body 5 is also installed, and the front end of this accelerating tube 3 is open end, and described large mass impacts body 5 is arranged on the rear end of accelerating tube 3.Large mass impacts body 5 of the present invention is large quality hammer or large quality bullet, also can be hammer with large quality or quality bullet is similar greatly parts.For the ease of providing power to large mass impacts body 5, be also provided with plenum chamber 4 in the junction, right side of described accelerating tube 3.
During use, the device such as air compressor or high pressure gas holder can be used to be filled with the gas of predetermined pressure to plenum chamber 4.For the ease of automatically opening plenum chamber 4, gases at high pressure in plenum chamber 4 are entered in accelerating tube 3 and promotes large mass impacts body 5 after undergoes rapid expansion along accelerating tube 3 accelerated motion, impacting body 5 reaches predetermined speed when arriving accelerating tube 3 left port, is also provided with the electromagnetically induced valve 10 opening plenum chamber 4 between described accelerating tube 3 and plenum chamber 4.During use, connect the power supply of electromagnetically induced valve 10, then can open rapidly plenum chamber 4.
Meanwhile, described base 1 is also provided with anti-explosion tank 2, described anti-explosion tank 2 is fixed on base 1, and this anti-explosion tank 2 has multiple installing port, so that install miscellaneous part when using.Then be provided with target plate 7 in described anti-explosion tank 2 inside, meanwhile, this target plate 7 be also provided with stationary fixture 8, described stationary fixture 8 then installs measured body 6, then pass the installing port of anti-explosion tank 2 after described large mass impacts body 5 accelerates and clash into measured body 6.
Not only measuring accuracy is high, simple to operate for Pneumatic acceleration striking experiment method of the present invention, and it is with low cost, large mass impacts body is reusable, its base is provided with anti-explosion tank, measured body is then arranged in anti-explosion tank, can effectively protect 30gTNT explosive yield by this anti-explosion tank, thus prevent the accident that meets accident in experimentation.Large mass impacts body is arranged in accelerating tube, open plenum chamber during use and make gases at high pressure undergoes rapid expansion and promote large mass impacts body to accelerate large mass impacts body, measured body is clashed into after making large mass impacts body reach the speed of test request, testing tool can be used to test dynamic pressure suffered when the movement velocity of large mass impacts body and measured body are knocked, thus can effectively test in 8m/s ~ 80m/s speed (i.e. speed per hour 28.8km ~ 288km) scope, for the accidental impact of 2kg ~ 5kg weight to explosive wastewater, or in the harm effect of the materials such as 1kg ~ 5kg object strikes band predetermined configuration emissive plastic glazing in unscheduled event.
Before experiment, need first installation and adjustment Pneumatic acceleration striking experiment device, first debug electromagnetically induced valve 10, make electromagnetically induced valve 10 can reliably open plenum chamber 4, and large mass impacts body 5 is arranged on the precalculated position in accelerating tube 3.Then debug anti-explosion tank 2 and target plate 7, make the vertical relation of the right output port of the maintenance of large mass impacts body 5 and target plate 7 and anti-explosion tank 2, even if large mass impacts body 5 can along the center line movement of installing port, and make its acting force vertically act on target plate 7.Then measured body 6 is arranged on stationary fixture 8, and stationary fixture 8 is accurately arranged on target plate 7.The measured body 6 used in the present embodiment is the band gunpowder of predetermined configuration, explosive or organic glass, and this measured body 6 also can be other article.
Next need installation and adjustment testing tool, described testing tool comprises the photoelectricity test instrument testing large mass impacts body 5 movement velocity, the sensor of the dynamic pressure of test suffered by measured body 6 and oscillograph and the signal converter supporting with this sensor.Described sensor is arranged on measured body 6, so that induction measured body 6 is subject to dynamic pressure when clashing into, displacement, the dynamic pressure sensed, displacement information are passed to signal converter by this sensor, and be passed to oscillograph again after being changed by signal by signal converter, this dynamic pressure, displacement are then carried out showing, storing, so that experimenter gathers this test data by oscillograph.
Then use aerating device to be filled with predetermined pressure gas in plenum chamber 4, the dielectric gas used in the present embodiment is nitrogen or helium, and this dielectric gas also can be other gases in addition to hydrogen.Next the testing tool such as light electric tachometer and oscillograph can be started, connect the power supply of solenoid valve 10 simultaneously and open plenum chamber 4, gases at high pressure undergoes rapid expansion in plenum chamber 4 also promotes large mass impacts body 5 and to accelerate rapidly and move in path along near linear along accelerating tube 3, and then large mass impacts body 5 is through direct shock measured body 6 after the installing port on anti-explosion tank 2.The dynamic pressure that measured body in knockout process 6 is then subject to by the sensor on measured body 6, displacement information are passed to oscillograph, speed in large mass impacts body 5 motion process then carries out testing rear display by photoelectricity test speed instrument, then can direct read test result by the fast instrument of this oscillograph and photoelectricity test.
Embodiment 2
As shown in Figure 2, one-piece construction in the present embodiment is substantially the same manner as Example 1, unique difference is only also to be provided with force transmission mechanism in described measured body 6 front end, described force transmission mechanism comprises the force transmission mechanism 9 being arranged on measured body 6 front end and the force transferring structure support 12 supporting this force transmission mechanism 9, and described force transmission mechanism 9 comprises transmission rod and is connected to the impact damper on transmission rod.The measured body 6 that described force transmission mechanism 9 clashes into is arranged on stationary fixture 8, and transmission rod can also along force transferring structure support about 12 accurately movement.
The present embodiment is arranged on to be arranged on stationary fixture 8 and by stationary fixture 8 on target plate 7 at measured body 6 to be needed before right side to install force transmission mechanism, and the end face centering of the end face of transmission rod and large mass impacts body 5 is fitted, when clashing into transmission rod to make large mass impacts body 5, its contact area is maximum.Described force transmission mechanism 9 can also be provided with pulse-width modulator in advance, so that regulate the action time that large mass impacts body 5 pairs of measured bodies 6 clash into.
During test; first large mass impacts body 5 clashes into the transmission rod on force transmission mechanism 9 after accelerating; transmission rod clashes into pulse-width modulator and measured body 6 after being subject to the shock of large mass impacts body 5; thus the impact of large mass impacts body 5 is passed to measured body 6; large mass impacts body 5 can be made not act directly on measured body 6, thus the effect end of large mass impacts body 5 can be protected not because measured body 6 damages.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a Pneumatic acceleration striking experiment method, is characterized in that, comprises the following steps:
(1) installation and adjustment Pneumatic acceleration striking experiment device;
(2) installation and adjustment testing tool;
(3) inflate to plenum chamber;
(4) start testing tool, connect the power supply of electromagnetically induced valve simultaneously, large mass impacts body clashes into measured body after accelerating tube accelerates; The impacting body of described large mass impacts body to be quality be 2Kg ~ 5Kg; And test in 8m/s ~ 80m/s velocity range;
(5) by testing tool read test result; In step (4), when measured body front end does not arrange force transmission mechanism, large mass impacts body accelerates and directly clashes into measured body after passing the installing port on anti-explosion tank; When measured body front end is provided with force transmission mechanism, large mass impacts body clashes into measured body by force transmission mechanism after accelerating;
Step (1) comprises the following steps:
(1a) debug electromagnetically induced valve, and large mass impacts body is arranged on the precalculated position in accelerating tube;
(1b) debug anti-explosion tank and target plate, and make the vertical relation of the installing port of the maintenance of large mass impacts body and target plate and anti-explosion tank;
(1c) measured body is arranged on anti-explosion tank internal fixtion fixture.
2. according to a kind of Pneumatic acceleration striking experiment method according to claim 1, it is characterized in that: the testing tool in step (2) comprises the light electric tachometer testing large mass impacts body speed, the sensor of the dynamic pressure of test suffered by measured body, displacement and oscillograph and the signal converter supporting with sensor, described sensor is then arranged on the measured body in step (1c).
3. according to a kind of Pneumatic acceleration striking experiment method according to claim 2, it is characterized in that: also need when measured body front end is provided with force transmission mechanism force transmission mechanism is installed before installing measured body, and the end face centering of the end face of transmission rod and large mass impacts body is fitted; Described force transmission mechanism is also provided with pulse-width modulator in advance.
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| CN201310424872.6A CN103471943B (en) | 2013-09-17 | 2013-09-17 | A kind of Pneumatic acceleration striking experiment method |
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| CN201310424872.6A CN103471943B (en) | 2013-09-17 | 2013-09-17 | A kind of Pneumatic acceleration striking experiment method |
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| CN103471943B true CN103471943B (en) | 2015-10-14 |
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| CN103954513B (en) * | 2014-05-13 | 2017-02-15 | 中国工程物理研究院化工材料研究所 | High-drop precision drop hammer impact test device of explosive and other materials |
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