CN105222641A - A kind of reluctance type Electromagnetical ejector testing stand - Google Patents
A kind of reluctance type Electromagnetical ejector testing stand Download PDFInfo
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- CN105222641A CN105222641A CN201510713622.3A CN201510713622A CN105222641A CN 105222641 A CN105222641 A CN 105222641A CN 201510713622 A CN201510713622 A CN 201510713622A CN 105222641 A CN105222641 A CN 105222641A
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Abstract
The invention provides a kind of reluctance type Electromagnetical ejector testing stand, relate to reluctance type Electromagnetical ejector simulation technical field, the problem that the accuracy for the analysis of simulation result solving the reluctance type Electromagnetical ejector existed in prior art is low.Described reluctance type Electromagnetical ejector testing stand, comprise: pedestal, ejector installing plate and trigger mechanism, ejector installing plate is provided with ejector main body, ejector main body comprises the head pipe, the first accelerator, middle pipe, the second accelerator and the tail pipe that connect successively, first accelerator and the second accelerator include accelerating coil, middle pipe and tail pipe are respectively arranged with photogate transmitting-receiving hole, are separately installed with a photogate on side, each photogate transmitting-receiving hole; The trigger end of trigger mechanism stretches in middle pipe, and Projectile Motion starts the second accelerator to trigger mechanism during trigger end.Described reluctance type Electromagnetical ejector testing stand is applied in reluctance type Electromagnetical ejector simulation process.
Description
Technical field
The present invention relates to reluctance type Electromagnetical ejector simulation technical field, especially relate to a kind of reluctance type Electromagnetical ejector testing stand.
Background technology
Electromagnetism speed technology has extremely wide application prospect in weapon manufacture, and its form is also varied.As the sophisticated technology of carrier-borne aircraft catapult-assisted take-off, electromagnetic launch is the object that various countries' military project falls over each other to study always.Especially in the research field of kinetic energy weapon, electromagnetic launch technology is leading especially, and its citation form is also varied, has the various ways such as coilgun, railgun, electrothermal gun.Wherein, coilgun is the focus of various countries' research always, it is this that to launch form structure simple, launch efficiency very high, reluctance coil big gun is made up of the yoke iron core of a series of solenoid-activated coil and ferromagnetic material, when iron core moves, the magnetic resistance of the magnetic circuit of wound coil will change, so just create active force to iron core bullet.When iron core advances to hub of a spool, magnetic flux is easier to be formed and pass through, this is because the air-gap of magnetic circuit diminishes, the magnetic resistance of magnetic circuit is also little, now also minimum to the active force of iron core.When iron core is removed from hub of a spool, originally drew iron core magnetic force forward to become now and draw iron core backward, and therefore, some measure must be taked immediately not to be pulled to make it after iron core arrives hub of a spool.Higher kinetic energy is launched in order to allow reluctance type, general reluctance type electromagnetic launch needs the mode using multistage acceleration, repeatedly accelerate for bullet by same principle, so just high requirement is proposed to Accelerator control, because only have opportunity and the waveform of conservative control pulse current, ejector operating efficiency could be allowed to reach the highest.
Obviously, for the calculating of reluctance type electromagnetic launch emission effciency, there is multiple non-linear variable, we can obtain more accurate simulation result based on computer finite element analysis, comprise inductance value analytical calculation, bullet stress curve and bullet muzzle velocity, but in actual experiment process, finite element analysis has a lot of insurmountable problem.Such as, the coil of actual coiling and idealized coil former still have certain gap, and especially after repeatedly launching, coil is due to stressed and occur deformation, and minor variations appears in inductance value.Another, ideal capacitor discharge curve is not followed in true capacitor electric discharge, each electric capacity has different parameters, the magnetization characteristic of bullet is also not quite similar, even the magnetic material of same label, also can be different because of production batch, have different magnetization characteristics, these factors have all had a strong impact on the accuracy of simulation analysis result.
Summary of the invention
The object of the present invention is to provide a kind of reluctance type Electromagnetical ejector testing stand, with the problem that the accuracy of the analysis of simulation result solving the reluctance type Electromagnetical ejector existed in prior art is low.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of reluctance type Electromagnetical ejector testing stand provided by the invention, comprise: pedestal, be arranged at the ejector installing plate above described pedestal, multiple first pillar is arranged at intervals with between described pedestal and described ejector installing plate, described ejector installing plate is provided with ejector main body, described ejector main body comprises the head pipe connected successively, first accelerator, middle pipe, second accelerator and tail pipe, described first accelerator and described second accelerator include accelerating coil, described middle pipe and described tail pipe are respectively arranged with photogate transmitting-receiving hole, one is separately installed with for measuring the photogate of velocity of shot on side, each described photogate transmitting-receiving hole, described reluctance type Electromagnetical ejector testing stand also comprises trigger mechanism, and the trigger end of described trigger mechanism stretches in described middle pipe, and described Projectile Motion starts described second accelerator to trigger mechanism described during described trigger end.
Preferably, trigger mechanism comprises contact fixed support and is fixed on the trigger end on described contact fixed support, and described trigger end comprises the contact that two panels is electrically connected to each other, and contact described in one of them stretches into described middle pipe.
Preferably, the top of described middle pipe is provided with trigger mechanism installing plate, multiple second pillar is provided with between described trigger mechanism installing plate and described ejector installing plate, described trigger mechanism installing plate offers chute along the axis of described middle pipe, and described contact bracket slide is installed in described chute.
Preferably, described trigger mechanism comprises trigger end, described trigger end is rod-shaped conductor, described middle pipe is provided with triggering grooving, described rod-shaped conductor is through described triggering grooving, described rod-shaped conductor smashes through described rod-shaped conductor by described bullet, and described trigger mechanism starts described second accelerator.
Preferably, the periphery of described head pipe, described middle pipe and described tail pipe is separately installed with postive stop baffle.
Preferably, the two ends of described first accelerator and the two ends of described second accelerator are separately installed with accelerator fixture.
Preferably, be provided with sensor stand between described pedestal and described ejector installing plate, described sensor stand and described photogate are oppositely arranged.
Preferably, the below of described pedestal is provided with base, and four angular zones under described base are respectively arranged with height regulating frame.
Preferably, described base is provided with pedestal suspension, described pedestal is connected with described base by described pedestal suspension.
Preferably, the upper surface of described first pipe offers observation groove.
Relative to prior art, reluctance type Electromagnetical ejector testing stand of the present invention has following advantage:
Use the reluctance type Electromagnetical ejector testing stand that the present embodiment provides, use the reluctance type Electromagnetical ejector testing stand that the present embodiment provides, reluctance type Electromagnetical ejector can be simulated and carry out actual motion, thus the actual accelerating coil turned to can be detected on the impact of bullet, also can detect after repeatedly launching accelerating coil there is deformation after the change of parameter and impact that bullet is launched, and the bullet that can experimentally use carries out the magnetization characteristic drawing himself reality.Meanwhile, the speed parameter of bullet after the reluctance type Electromagnetical ejector testing stand that the present embodiment provides can utilize the measurement of photoelectricity door switch sensor to accelerate via the first accelerator and the second accelerator; By regulating DC source voltage adjustment supply voltage parameter, voltage can be sought for the impact of launching efficiency; The capacitance of the accelerating coil in the first accelerator and the second accelerator can be adjusted, find best capacitance parameter; Also the accelerating coil changing variety classes, different parameters is convenient to, to seek the parameter of best accelerating coil.That is, the reluctance type Electromagnetical ejector testing stand using the present embodiment to provide can be simulated reluctance type Electromagnetical ejector and be carried out actual motion, thus detect the change of ejector in use each parameter, and can adjust each several part parameter of reluctance type Electromagnetical ejector in time, thus make the analysis of simulation result for reluctance type Electromagnetical ejector more accurate.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in detailed description of the invention or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the reluctance type Electromagnetical ejector testing stand that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the structural representation of the ejector main body shown in Fig. 1;
The connection diagram of the ejector main body that Fig. 3 provides for the embodiment of the present invention and postive stop baffle;
The circuit diagram of trigger mechanism in the reluctance type Electromagnetical ejector testing stand that Fig. 4 provides for the embodiment of the present invention;
The structural representation of trigger mechanism in the reluctance type Electromagnetical ejector testing stand that Fig. 5 provides for the embodiment of the present invention;
The connection diagram one of the second accelerator that Fig. 6 provides for the embodiment of the present invention and accelerator fixture;
The connection diagram two of the second accelerator that Fig. 7 provides for the embodiment of the present invention and accelerator fixture;
The connection diagram three of the second accelerator that Fig. 8 provides for the embodiment of the present invention and accelerator fixture;
The connection diagram of the reluctance type Electromagnetical ejector testing stand that Fig. 9 provides for the embodiment of the present invention and impulse current generator.
Reference numeral:
11-pedestal; 12-ejector installing plate; 13-trigger mechanism installing plate;
14-base; 15-chute; 21-head pipe;
Manage in 22-; 23-tail pipe; 24-observes groove;
25-triggers groove; 26-postive stop baffle; 31-first accelerator;
32-second accelerator; 33-accelerator fixture; 41-first pillar;
42-second pillar; 5-photogate; 51-sensor stand;
6-trigger mechanism; 61-contact fixed support; 62-first contact;
63-the second wafer; 71-pedestal suspension; 72-suspension is son in an opposite direction;
81-impulse current generator upper strata; 82-impulse current generator intermediate layer;
83-impulse current generator bottom.
Detailed description of the invention
Be clearly and completely described technical scheme of the present invention below in conjunction with accompanying drawing, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
The structural representation of the reluctance type Electromagnetical ejector testing stand that Fig. 1 provides for the embodiment of the present invention, as shown in Figure 1, the reluctance type Electromagnetical ejector testing stand that the embodiment of the present invention provides, comprise: pedestal 11, be arranged at the ejector installing plate 12 above pedestal 11, multiple first pillar 41 is arranged at intervals with between pedestal 11 and ejector installing plate 12, in FIG, first pillar 41 is divided into two row, often row eight intervals are arranged, ejector installing plate 12 is provided with ejector main body, ejector main body comprises the first pipe 21 connected successively, first accelerator 31, middle pipe 22, second accelerator 32 and tail pipe 23, first accelerator 31 and the second accelerator 32 include accelerating coil, middle pipe 22 and tail pipe 23 are respectively arranged with photogate 5 and receive and dispatch hole, receive and dispatch side, hole at each photogate 5 and be separately installed with one for measuring the photogate 5 of velocity of shot, photogate 5 employs the method for being inverted and installing, downward outlet, its main body is placed between ejector installing plate 12 and pedestal 11, thus effectively make use of space, make whole apparatus structure compact.The Main Function of photogate 5 measures velocity of shot, its measuring position keeps certain distance with the first accelerator 31 and the second accelerator 32 respectively, its objective is and determine that bullet departs from the first accelerator 31 and the second accelerator 32 acts on, and carry out tachometric survey again after velocity-stabilization, ensure data accuracy.; Reluctance type Electromagnetical ejector testing stand also comprises trigger mechanism 6, and the trigger end of trigger mechanism 6 stretches in middle pipe 22, and Projectile Motion starts the second accelerator 32 to trigger mechanism during trigger end 6.
Fig. 2 is the structural representation of the ejector main body shown in Fig. 1, as shown in Figure 2, when specifically implementing, the first accelerator 31 is identical with the second accelerator 32 structure, all comprise coil rack and be wrapped in the accelerating coil on coil rack, wherein, coil rack is made up of photosensitive resin, and photosensitive resin is non-conductive, nonmagnetic, therefore in accelerating coil galvanization, coil rack can not induce eddy current because of violent changes of magnetic field, also can not because of the distribution that there is effect of magnetic influence magnetic field.First pipe 21, middle pipe 22 and tail pipe 23 all adopt the tubular structure of square-outside and round-inside, and inner circular channel is used for Projectile Motion to be passed through, and external square shell is convenient to fixed installation.
Use the reluctance type Electromagnetical ejector testing stand that the present embodiment provides, reluctance type Electromagnetical ejector can be simulated and carry out actual motion, thus the actual accelerating coil turned to can be detected on the impact of bullet, also can detect after repeatedly launching accelerating coil there is deformation after the change of parameter and impact that bullet is launched, and the bullet that can experimentally use carries out the magnetization characteristic drawing himself reality.Meanwhile, the speed parameter of bullet after the reluctance type Electromagnetical ejector testing stand that the present embodiment provides can utilize the measurement of photoelectricity door switch sensor to accelerate via the first accelerator 31 and the second accelerator 32; By regulating DC source voltage adjustment supply voltage parameter, voltage can be sought for the impact of launching efficiency; The capacitance of the accelerating coil in the first accelerator 31 and the second accelerator 32 can be adjusted, find best capacitance parameter; Also the accelerating coil changing variety classes, different parameters is convenient to, to seek the parameter of best accelerating coil.That is, the reluctance type Electromagnetical ejector testing stand using the present embodiment to provide can be simulated reluctance type Electromagnetical ejector and be carried out actual motion, thus detect the change of ejector in use each parameter, and can adjust each several part parameter of reluctance type Electromagnetical ejector in time, thus make the analysis of simulation result for reluctance type Electromagnetical ejector more accurate.
In addition, above-mentioned reluctance type Electromagnetical ejector testing stand can also utilize the state of temperature that the instrument such as thermal resistance and temperature measurer is quick, accurately measure accelerating coil, show that temperature is for the impact of launching efficiency.
The connection diagram of the ejector main body that Fig. 3 provides for the embodiment of the present invention and postive stop baffle 26, as shown in Figure 3, for the ease of observing the moving situation of bullet in first pipe 21, preferably, the upper surface of first pipe 21 offers observes groove 24.In order to ensure that first pipe 21, middle pipe 22 and tail pipe 23 can not bend in the course of the work, misplace, distortion, the periphery of first pipe 21, middle pipe 22 and tail pipe 23 is separately installed with postive stop baffle 26, that is, the both sides both sides of vertical paper direction (in the Fig. 1) of first pipe 21, middle pipe 22 and tail pipe 23 and end face and bottom surface are all provided with postive stop baffle 26.These postive stop baffles 26 are aluminium panels, notch is offered in the position relative with the observation groove 24 on first pipe 21, through hole is being offered with the relative position that the photoelectricity door on middle pipe 22 and tail pipe 23 receives and dispatches hole, the first pipe 21 of whole ejector main body, middle pipe 22 and tail pipe 23 are all wrapped by, achieve higher intensity, do not affect for a series of measurements of bullet, position fixing process simultaneously.
The circuit diagram of trigger mechanism 6 in the reluctance type Electromagnetical ejector testing stand that Fig. 4 provides for the embodiment of the present invention, as shown in Figure 4, after switch S 1A is closed, trigger mechanism 6 enters armed state, now there is electric current through inductance L 1, normally closed switch S1B, flow back to electric power loop, now the gate pole of the IGCT D1 of the second accelerator 32 and negative electrode are in reliable short circuit state, can not be triggered, when the moment that switch S 1B opens, due to the choking effect of inductance L 1, electric current can not be undergone mutation, the electric current originally flowing through switch S 1B is forced to change its course the gate pole of IGCT D1 of inflow second accelerator 32, and then the IGCT D1's of triggering the second accelerator 32 is open-minded.Its core is, using circuitry cuts as characterization signal, triggers corresponding IGCT D1.This circuit theory is simple, be easy to realize, the trigger current of IGCT D1 is directly controlled, especially due to the existence of choking-winding, all kinds of stray capacitance in circuits for triggering can well be reduced, inductance causes delay for the triggering of IGCT, theoretically, switch S 1B opens and IGCT D1 can be caused open-minded immediately without delay, arc extinguishing medium is smeared in contact, natively very small electric arc can be reduced, then above-mentioned cutting-off process is accelerated, in sum, realize said process only to need to realize a bit, that allows in bullet running exactly, needing the position of triggering second accelerator 32, cut off a certain current path, produce the condition that similar switch S 1B opens fast, thus the zero-lag realizing the second accelerator 32 triggers.
The structural representation of trigger mechanism 6 in the reluctance type Electromagnetical ejector testing stand that Fig. 5 provides for the embodiment of the present invention, as shown in Figure 5, in above-mentioned reluctance type Electromagnetical ejector testing stand, trigger mechanism 6 can be following structure: the trigger end that trigger mechanism 6 comprises contact fixed support 61 and is fixed on contact fixed support 61, trigger end comprises the contact that two panels is electrically connected to each other, and one of them contact stretches into middle pipe 22.During concrete enforcement, middle pipe 22 top offers vertically triggers groove 25, two panels contact is made by brass, there is good toughness and contact electric conductivity, for the ease of distinguishing this two contacts, we are by this two contact called after first contacts 62 and the second wafer 63, first contact 62 tilts certain angle, the region of its distance front end certain distance crimps with the second wafer 63 left end of the first contact 62 (in figure be crimp with the second wafer 63), keep good contact, thus define good path, be similar to the normally off of switch, first contact 62 stretches in the triggering groove 25 of middle pipe 22.When passing through in bullet therefrom pipe 22, touching the moment of the first contact 62, the front end of the first contact 62 can be started (starting to the right), thus cause the first contact 62 and the second wafer 63 to disengage, and then achieve the effect thrown open of similar switch S 1B, now the IGCT of the second accelerator 32 can be open-minded immediately, and time delay is very little.
For the ease of adjusting the position of trigger end, in a preferred embodiment, the top of middle pipe 22 is provided with trigger mechanism installing plate 13, multiple second pillar 42 is provided with between trigger mechanism installing plate 13 and ejector installing plate 12, on trigger mechanism installing plate 13, in edge, the axis of pipe 22 offers chute 15, and contact bracket slide is installed in chute 15.During concrete enforcement, the upper end of contact fixed support 61 is provided with draw-in groove, contact fixed support 61 is connected by the side of draw-in groove with the chute 15 of trigger mechanism installing plate 13, thus trigger mechanism 6 can be slided along the length direction of chute 15, thus drive trigger end to slide in the triggering groove 25 of middle pipe 22, easily accurate adjustment is carried out to trigger timing, and then be determined by experiment the optimal position parameters of triggering, this trigger mechanism 6 can Reusability simultaneously, repeatedly run and do not need to change parts, improve the operating efficiency of each test.
Above-mentioned trigger mechanism 6 is adapted to low speed bullet, when using High-velocity Projectiles, trigger mechanism 6 can be following structure: the trigger end of trigger mechanism 6 is rod-shaped conductor, rod-shaped conductor is closed by the hybrid epoxidized glue laminated of metal dust and is processed, middle pipe 22 is provided with triggering grooving, described triggering grooving is arc grooving, rod-shaped conductor is through triggering grooving, serve as the role of switch, circulating current, when bullet is after rod-shaped conductor, powerful impulsive force can pulverize rod-shaped conductor rapidly, cause the effect that similar switch S 1B opens rapidly, open-minded at once through rod-shaped conductor at bullet to ensure the IGCT of the second accelerator 32, thus accurately control the trigger timing of the IGCT of the second accelerator 32.
The connection diagram one of the second accelerator 32 that Fig. 6 provides for the embodiment of the present invention and accelerator fixture 33; The connection diagram two of the second accelerator 32 that Fig. 7 provides for the embodiment of the present invention and accelerator fixture 33; The connection diagram three of the second accelerator 32 that Fig. 8 provides for the embodiment of the present invention and accelerator fixture 33; As shown in fig. 6-7, in order to improve the stable connection of the first accelerator 31 and the second accelerator 32, preferably, the two ends of the first accelerator 31 and the two ends of the second accelerator 32 are separately installed with accelerator fixture 33.During concrete enforcement, accelerator fixture 33 is aluminum design, accelerator fixture 33 has through hole along the axis of first pipe 21, through hole is divided into two parts vertically, to connect the accelerator fixture 33 between first pipe 21 and the first accelerator 31, the diameter of a part for the close first pipe 21 of the through hole of this accelerator fixture 33 mates with the bossing on first pipe 21, can with the mutual grafting of bossing of first pipe 21, this ensures that there first pipe 21 and be rigidly connected with accelerator fixture 33; Accelerator fixture 33 mates with the interface section of first pipe 21 near the part of one-level accelerator, the directly coated interface gap of first pipe 21 and one-level accelerator, ensure that being rigidly connected of the interface section of first pipe 21 and the first accelerator 31, guarantee that it can not occur to misplace or bending phenomenon; The both sides of accelerator fixture 33 relatively first pipe 21 radial direction are respectively provided with a wings, will speed up device be fixed together with accelerator base 14 better by wings.
Further, two sensor stands 51 are provided with between pedestal 11 and ejector base plate, two sensor stands 51 respectively relative two photogate 5 are installed, sensor stand 51 and photogate 5 are oppositely arranged, for stable installation photogate 5, prevent from causing photogate 5 to rock in the process run in ejector main body and affecting measurement result.
As the further distortion to above-mentioned reluctance type Electromagnetical ejector testing stand, the below of pedestal 11 is provided with base 14, and four angular zones under base 14 are respectively arranged with height regulating frame.During concrete enforcement, base 14 is the wooden base 14 adopting monoblock pine to make, and wooden base 14 can well absorb the mechanical shock that ejector main body produces in running when ensureing rigidity.Base 14 has the threading square hole that three transverse directions are opened, occur installing for terminal block, allow drive current wire hide pass through, base 14 also has the installing hole that two longitudinal directions are opened, be mainly used in photogate 5 holding wire hide pass through, there is the notch that five crossing respectively with threading square hole bottom base 14, draw bottom base 14 for wire and do not affect base 14 and steadily lay.Now, coordinate base 14, pedestal 11 also has five through wires holes, identical with base 14 through wires hole size, for whole ejector main body reasonable line arrangement.Comprising reserved terminal block installing hole, for arranging in through wires hole place mounting terminal.
Simultaneously, because four angular zones under base 14 are respectively arranged with height regulating frame, by the inclination angle regulating the height of each height regulating frame can adjust base 14, thus the tilt angled down of adjustment ejector main body, to compensate the frictional resistance produced when bullet slides in ejector main body with gravitional force, improve experimental result accuracy.
Because pedestal 11 bottom exists the bulge-structure of various connection securing member, the nut, nut etc. of such as screw, therefore the bottom of pedestal 11 out-of-flatness, can not fit tightly with base 14, pedestal 11 even may produce and rock, be difficult to fastening, thus need to be fixed by thicker pedestal suspension 71.Please continue to refer to Fig. 1, base 14 is provided with pedestal suspension 71, pedestal 11 is connected with base 14 by pedestal suspension 71.During concrete enforcement, be respectively provided with a pedestal suspension 71 be made up of aluminium sheet in the both sides (being the both sides of vertical paper in FIG) of pedestal 11.Pedestal suspension 71 is for separating certain distance by base 14 and pedestal 11.Pedestal suspension 71 has row's internal thread hole relative to the inner side of pedestal 11, for being fastenedly connected with pedestal 11, thus, the bottom of pedestal suspension 71 just there will not be the projection of securing member, as for the connection of pedestal suspension 71 with base 14, outside pedestal suspension 71, use tapping screw, realize the fastening of two kinds of different materials.Pedestal suspension 71 undulate, the regular mounting fastener avoided below pedestal 11.To this completes between base 14 with pedestal 11 firm is connected.
In addition, as shown in Figure 1, in the left field (as shown in Figure 1 direction) of base 14, base 14 is provided with suspension 72 be in an opposite direction made up of aluminium sheet, suspension in an opposite direction son 72 is positioned at the left side of pedestal 11, while supplementary base suspension 71 realizes its response function, the suspension huge recoil that son 72 can produce in ejection process ejector main body in an opposite direction carries out controlling and absorbs, prevent ejector main body from ejection process, producing excessive displacement relative to base 14, thus strengthen whole syndeton.
In above-mentioned reluctance type Electromagnetical ejector testing stand, the first accelerator 31 and the second accelerator 32 provide high level pulse current by impulse current generator respectively, are described below to the impulse current generator that the embodiment of the present invention uses.
The connection diagram of the reluctance type Electromagnetical ejector testing stand that Fig. 9 provides for the embodiment of the present invention and impulse current generator, as shown in Figure 9, impulse current generator is divided into three layers, and the components and parts in impulse current generator upper strata 81 serve the effect controlling to be incorporated to tank capacitors quantity.Negative electrode is had to conflux busbar above the circuit on upper strata 81, bleeder resistance switch.Whether the bleeder resistance that bleeder resistance switch is used for Non-follow control impulse current generator bottom 83 accesses loop, and bleeder resistance effect releases sb. unconditionally capacitance voltage exactly, ensures in emergency circumstances circuit safety.The negative electrode busbar that confluxes is spaced layer of glass fiber insulation board with hexagonal double-ended bolt below, be screwed into milled screw on negative electrode confluxes the corresponding installing hole of busbar after, just can make the corresponding hexagonal double-ended bolt reliable connection of busbar, namely corresponding capacitor is incorporated to tank circuit, realizes the adjustment of impulse current generator storage capacitor parameter with this.
There are two row's Capacitor banks in impulse current generator intermediate layer 82, adopt common-anode, each capacitor coordinates a hexagonal double-ended bolt and the negative electrode busbar that confluxes to be connected, its charging and discharging currents is guided by hexagonal double-ended bolt, form relatively independent Capacitor banks loop, facilitate Capacitor banks on demand and entry loop or excise from loop.Be that anode confluxes busbar in the middle of two row's Capacitor banks, formed by brass sheet digital control processing, overall in T shape.T-shaped lower part is furnished with Capacitor banks anode tap sub-aperture, and all capacitor common anode pole is connected on anode and confluxes on busbar, and T-shaped busbar top crimping half control device blocks, serves and collect anode current, transfer to the effect that half control device controls.Finally, anode lead wire is drawn by half control device blocks, and the control end of half control device is connected on cutting type and controls on current feedback circuit.
Impulse current generator bottom 83 is key-course.Inverter circuit, current-limiting resistance, bleeder resistance, relay module are settled, as the DC source supply realizing various voltage, current-limiting resistance is made up of high-power resistance connection in series-parallel, there is enough thermal capacity, effect power rush to inverter when being exactly the charging of limiting capacitance device group, power peak is controlled within inverter rated power.Bleeder resistance is used for the residual voltage of releasing capacitor group, ensures the safety of experiment.What relay group was used for realizing circuit relevant position cut-offs control, controls its action by chip programming, for danger coefficient compared with low, arcing possibility is little, drop-out current is little and need the place of frequent movement.24v direct current boosts as 440v alternating current through inverter, HVDC is become after Ultrafast recovery diode bridge rectifier, high voltage direct current is through current-limiting resistance, to upper strata 81 to energy-storage capacitor charging, three, relay, wherein the series connection of the first two relay controls the break-make of high voltage direct current, ensure safe and reliable, last Control IGBT group signal, wherein the triggering signal of the first accelerator 31 is provided by dry cell, and the triggering signal of the second accelerator 32 is provided by trigger mechanism 6.Impulse current generator intermediate layer 82 is accumulators, supplies pulse current, to coil discharge by impulse current generator bottom 83.Capacitor adopts common-anode, and its negative electrode separates separately, determines negative electrode whether place in circuit by the knurled nut in impulse current generator upper strata 81.Electrical connection is between layers connected by brass hexagonal double-ended bolt completely.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a reluctance type Electromagnetical ejector testing stand, it is characterized in that, comprise: pedestal, be arranged at the ejector installing plate above described pedestal, multiple first pillar is arranged at intervals with between described pedestal and described ejector installing plate, described ejector installing plate is provided with ejector main body, described ejector main body comprises the head pipe connected successively, first accelerator, middle pipe, second accelerator and tail pipe, described first accelerator and described second accelerator include accelerating coil, described middle pipe and described tail pipe are respectively arranged with photogate transmitting-receiving hole, one is separately installed with for measuring the photogate of velocity of shot on side, each described photogate transmitting-receiving hole, described reluctance type Electromagnetical ejector testing stand also comprises trigger mechanism, and the trigger end of described trigger mechanism stretches in described middle pipe, and described Projectile Motion starts described second accelerator to trigger mechanism described during described trigger end.
2. reluctance type Electromagnetical ejector testing stand according to claim 1, it is characterized in that, trigger mechanism comprises contact fixed support and is fixed on the trigger end on described contact fixed support, and described trigger end comprises the contact that two panels is electrically connected to each other, and contact described in one of them stretches into described middle pipe.
3. reluctance type Electromagnetical ejector testing stand according to claim 2, it is characterized in that, the top of described middle pipe is provided with trigger mechanism installing plate, multiple second pillar is provided with between described trigger mechanism installing plate and described ejector installing plate, described trigger mechanism installing plate offers chute along the axis of described middle pipe, and described contact bracket slide is installed in described chute.
4. reluctance type Electromagnetical ejector testing stand according to claim 1, it is characterized in that, described trigger mechanism comprises trigger end, described trigger end is rod-shaped conductor, described middle pipe is provided with triggering grooving, described rod-shaped conductor is through described triggering grooving, and described rod-shaped conductor smashes through described rod-shaped conductor by described bullet, and described trigger mechanism starts described second accelerator.
5. reluctance type Electromagnetical ejector testing stand according to claim 1, is characterized in that, the periphery of described head pipe, described middle pipe and described tail pipe is separately installed with postive stop baffle.
6. reluctance type Electromagnetical ejector testing stand according to claim 1, is characterized in that, the two ends of described first accelerator and the two ends of described second accelerator are separately installed with accelerator fixture.
7. reluctance type Electromagnetical ejector testing stand according to claim 1, is characterized in that, is provided with sensor stand between described pedestal and described ejector installing plate, and described sensor stand and described photogate are oppositely arranged.
8. reluctance type Electromagnetical ejector testing stand according to claim 1, it is characterized in that, the below of described pedestal is provided with base, and four angular zones under described base are respectively arranged with height regulating frame.
9. reluctance type Electromagnetical ejector testing stand according to claim 8, is characterized in that, described base is provided with pedestal suspension, and described pedestal is connected with described base by described pedestal suspension.
10. reluctance type Electromagnetical ejector testing stand according to claim 1, is characterized in that, the upper surface of described first pipe offers observation groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109080845A (en) * | 2018-08-30 | 2018-12-25 | 安徽理工大学 | A kind of multistage electromagnetism acceleration ejection system |
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| US5081901A (en) * | 1987-06-29 | 1992-01-21 | Westinghouse Electric Corp. | Electromagnetic launcher with muzzle velocity adjustment |
| JP2001133198A (en) * | 1999-11-05 | 2001-05-18 | Nobuyuki Higuchi | Accelerator, power storage apparatus and launcher |
| CN104852667A (en) * | 2015-05-26 | 2015-08-19 | 常州工学院 | Linear motor control system and electromagnetic catapult testbed using same |
| CN204594329U (en) * | 2015-05-06 | 2015-08-26 | 王辉 | Small ball electromagnetic ejection system |
| CN205090869U (en) * | 2015-10-28 | 2016-03-16 | 华北电力大学 | Reluctance type electromagnetic launch ware test bench |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5081901A (en) * | 1987-06-29 | 1992-01-21 | Westinghouse Electric Corp. | Electromagnetic launcher with muzzle velocity adjustment |
| JP2001133198A (en) * | 1999-11-05 | 2001-05-18 | Nobuyuki Higuchi | Accelerator, power storage apparatus and launcher |
| CN204594329U (en) * | 2015-05-06 | 2015-08-26 | 王辉 | Small ball electromagnetic ejection system |
| CN104852667A (en) * | 2015-05-26 | 2015-08-19 | 常州工学院 | Linear motor control system and electromagnetic catapult testbed using same |
| CN205090869U (en) * | 2015-10-28 | 2016-03-16 | 华北电力大学 | Reluctance type electromagnetic launch ware test bench |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109080845A (en) * | 2018-08-30 | 2018-12-25 | 安徽理工大学 | A kind of multistage electromagnetism acceleration ejection system |
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