CN102788676B - Pneumatic type high acceleration vertical impact table - Google Patents
Pneumatic type high acceleration vertical impact table Download PDFInfo
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- CN102788676B CN102788676B CN201210321144.8A CN201210321144A CN102788676B CN 102788676 B CN102788676 B CN 102788676B CN 201210321144 A CN201210321144 A CN 201210321144A CN 102788676 B CN102788676 B CN 102788676B
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Abstract
The invention discloses a pneumatic type high acceleration vertical impact table, which mainly comprises a support frame, a impact cylinder, a piston assembly, a buffer mechanism, a piston limiting release mechanism and the like. The working process of the pneumatic type high acceleration vertical impact table is as follows: the piston assembly is assembled in the impact cylinder, and a piston is locked and limited by the piston limiting release mechanism, and then, the impact cylinder is rotated in a vertical status and well fixed, and the impact cylinder is inflated until reaching a setting pressure; the locking of the piston by the piston limiting release mechanism is removed, air in an air chamber of the impact cylinder can drive the piston assembly to make accelerated motion downwards; and when the piston collides a shock pad arranged on an anvil, a required impact acceleration and a pulse duration are generated. The pneumatic type high acceleration vertical impact table is compact in structure, easy to operate, capable of generating large impact energy and realizing different impact accelerations and pulse durations by adjusting an inflation pressure and the shock pad. The pneumatic type high acceleration vertical impact table is particularly suitable for a sample of which the mass is less than 0.5kg, and a acceleration of 500g-5000g and a half-sine impact wave shape with pulse duration of 10ms-3ms can be generated.
Description
Technical field
The present invention relates to the impulse test of dynamic environmental test technology, be specifically related to a kind of pneumatic type high acceleration vertical impact table.
Background technology
Impact testing machine is mainly used in the dynamic environmental test of product, actual shock pulse and impact energy can be simulated, the examination product shock environment that expection may suffer in use, handling and transportation, to determine the adaptive faculty of product to various shock environment.
Vertical impact testing machine both domestic and external mainly adopts the mode of free-electron model, principle is that test products is arranged on a platform, adopt and by some way platform is risen to certain height, then release platform, make platform together with product free-electron model on anvil block, anvil block installs impact pad, produces the surge waveform needed.According to the difference of platform hoisting way, vertical impact table is divided into hydraulic pressure lift, airlift or leading screw hoisting way, no matter adopts which kind of hoisting way, and free-electron model formula shock testing machine impact capacity is less.The initial velocity of platform during in order to increase impact, also use some accelerators, such as install back-pressure spring, adopt multiply elastic string prestretching platform, adopt the modes such as the pre-flattening bench of cylinder, the drop type shock testing machine initial velocity having installed accelerator generally can reach 12m/s.Select the platform of 200 × 200mm, its maximum impact overload and duration of pulse can reach 1500g, 1 ~ 2ms.
Also have a kind of high acceleration shock platform, or be arranged on the high acceleration amplifier in vertical impact table, are all the principles adopting table top secondary collision, increase the relative impact velocity of table top, reach large impact acceleration.High acceleration shock platform is mainly in order to reach high impact acceleration, and maximum impact acceleration can reach 50000g, but the duration of pulse is little, generally between 0.05 ~ 0.1ms.
The device that can realize high acceleration and long pulse duration mainly adopts Gas Gun at present, Gas Gun produces thump two kinds of modes, a kind of is launched by the bullet power valve installing test product, gases at high pressure act on bottom bullet, thump acceleration required for producing at bullet accelerating sections, this method can obtain the wide duration of pulse, but producing high acceleration by bullet base pressure has certain limitation, general acceleration is at below 10000g, and the duration can reach 10ms.A kind of is that Impact Made By A Projectile On A after will speed up bumps against on a target, bullet produces approximate semisinusoidal waveform, duration of shock pulse can be regulated by changing the padded coaming that target is installed, this mode can produce large impact acceleration, impact acceleration can reach 50000g, and the duration of pulse can reach 1 ~ 3ms.No matter adopt which kind of mode, Gas Gun power valve adds that breeze way is all very long, and according to different emission test requirements, length is at 20m ~ 100m, and floor area is large, and cost is high, and setup time is long, is therefore difficult to be widely applied.
Summary of the invention
The object of the present invention is to provide a kind of pneumatic type high acceleration vertical impact table, it can simulate high energy impact events environment, solve drop type vertical impact table can only produce high acceleration and the wider duration of pulse can not be reached, can be up to the standard again the technical conditions of Gas Gun within the specific limits, overcome Gas Gun floor area large, the shortcoming involved great expense, may be used for the little test product high acceleration shock test such as fuse, electronic devices and components.This pneumatic type high acceleration vertical impact table maximum impact acceleration can reach 5000g, duration of pulse 1 ~ 5ms.
For achieving the above object, the technical solution used in the present invention is as follows:
This pneumatic type high acceleration vertical impact table comprises:
One impact cylinder, it is fixedly installed on a support, and described impact cylinder top is provided with impact cylinder air intake opening, and described impact cylinder air intake opening with in order to provide the source of the gas of pressure gas to be communicated with, meanwhile, described impact cylinder is also provided with impact cylinder gas outlet;
One piston component, it is located in impact cylinder, and coordinate with impact cylinder inner wall sealing, and also can a select location between impact cylinder two ends and being free to slide between impact cylinder lower end, described select location is positioned at below impact cylinder air intake opening, and described piston component upper end is also provided with at least one test product installation position simultaneously;
One piston limit releasing mechanism, it is for being locked in the select location on described impact cylinder in the first operative state by piston component, and in a second operative state by the select location release of piston component on described impact cylinder;
One anvil block, it is located at immediately below impact cylinder, and described anvil block is provided with impact pad.
One of preferably, described impact cylinder is rack-mount by symmetrical two feathering axis, and described impact cylinder can rotate arbitrarily around described turning axle.
One of preferably, described impact cylinder is rack-mount by buffer gear, described buffer gear comprises rotary support block, buffer plate and cushioning support-saddle, wherein, swivel bearing is provided with in described rotary support block, described swivel bearing coordinates with the feathering axis be arranged on impact cylinder, and, described rotary support block top is provided with spring guidepost, bottom is arranged on buffer plate, described spring guidepost is provided with buffer spring, is provided with block above described buffer spring, described buffer plate is arranged on cushioning support-saddle.
One of preferably, described support comprises rack side plate, and described rotary support block and upper block are all movably set in the draw-in groove be distributed on rack side plate, and all can vertically move.
One of preferably, described piston component comprises:
One piston, its upper end face is provided with at least one test product installation position, and outer wall is provided with above seal groove together, is provided with piston packing in described seal groove;
At least one buffering spacer, it is covered on described test product;
And at least one is for being pressed abd fixed on the gland nut on piston by described buffering spacer and test product.
One of preferably, described test product installation position comprises the test product mounting groove being located at piston upper surface.
One of preferably, described piston limit releasing mechanism comprises a dead bolt, freely walks, and be sealed and matched with described dead bolt hole in the dead bolt hole that described dead bolt can be arranged on impact cylinder, and meanwhile, described dead bolt is also connected with retractable driving device.
One of preferably, described piston limit releasing mechanism also comprises a dead bolt guide cylinder, described dead bolt guide cylinder is fixedly connected with impact cylinder, described dead bolt is located in described dead bolt guide cylinder, and described dead bolt is also sealed and matched through at least one dead bolt O-ring seal and described dead bolt guide cylinder and dead bolt hole.
One of preferably, described retractable driving device comprises locking cylinder, and described locking cylinder is arranged on the rack side plate in described support by locking cylinder installing plate, and the piston rod of locking cylinder is fixedly connected with dead bolt.
One of preferably, near described select location, be also provided with the position-limit mechanism for stoping piston component up in described impact cylinder, described position-limit mechanism comprises the lug boss be distributed on described impact cylinder inwall.
One of in addition, preferably, in this pneumatic type high acceleration vertical impact table, also an air-channel system can be set, use the control realized more easily this pneumatic type high acceleration vertical impact table course of work.This air-channel system can comprise the assemblies such as threeway, locking cylinder decompressor, locking cylinder solenoid valve, impact cylinder decompressor, impact cylinder air inlet electromagnetic valve, impact cylinder pressure-releasing electromagnetic valve, four-way, pressure transducer, and the pressurized air that source of the gas exports provides locking cylinder decompressor, impact cylinder decompressor respectively by threeway.Wherein, after the decompression of locking cylinder decompressor, locking cylinder solenoid valve is connected to, by air feed and the venting of locking cylinder solenoid control locking cylinder; After the decompression of impact cylinder decompressor, be connected to impact cylinder air inlet electromagnetic valve air intake opening, the outlet of impact cylinder air inlet electromagnetic valve is by a four-way, be connected respectively to impact cylinder, impact cylinder venting electromagnetism and pressure transducer, impact cylinder air inlet electromagnetic valve controls the air inlet of impact cylinder, and impact cylinder pressure-releasing electromagnetic valve controls the venting of impact cylinder.
Compared with prior art, the present invention at least has following advantages:
1. present invention incorporates the advantage that Gas Gun can produce greater impact energy, take the version of vertical impact testing table, existing vertical impact table can be reached and be difficult to reach high-impact acceleration and the requirement compared with the long pulse duration.May be used for the high impact overload test of fuse, small-sized electronic product.Novel structure of the present invention, cost are low, and manufacture, transport, install, use all very convenient.
2. install and unload test product simply, only needing angle impact cylinder being rotated to handled easily, just can load and unload piston component easily;
3. piston component installs test product flexibly, can install multiple test test product, improves the efficiency of test.According to different testing requirementss, impact cylinder (reducing impact cylinder diameter) can also be changed, higher impact acceleration requirement reached to small test product;
4. need very large buffing pad to carry out the impulsive force of damper piston during Gas Gun horizontal impact, and the present invention adopts vertical impact, impulsive force is directly delivered on ground, enormously simplify the buffer structure of equipment.On ground, buffer air bag can also be installed, effectively reduce the impulsive force being delivered to ground;
5. test product is longitudinally install in piston component, and piston longitudinal rigidity is high, and the surge waveform of generation is good;
6. preferably adopt full Pneumatically driven system, drive energy is simple, easy to maintenance, and is conducive to keeping the clean of environment.
Accompanying drawing explanation
Fig. 1 is the structural representation of piston component and piston limit releasing mechanism in a preferred embodiment of the present invention;
Fig. 2 is the structural representation of a preferred embodiment of the present invention;
Fig. 3 is the structural representation of impact cylinder clip in a preferred embodiment of the present invention;
Fig. 4 is the front view of buffer gear in a preferred embodiment of the present invention;
Fig. 5 is the side view of buffer gear in a preferred embodiment of the present invention;
Fig. 6 is the vertical view of buffer gear in a preferred embodiment of the present invention
Fig. 7 is the schematic diagram of gas circuit in a preferred embodiment of the present invention;
Shown in each figure, the parts of Reference numeral and instruction thereof are respectively above:
1, support; 2, impact cylinder air intake opening; 3, impact cylinder; 4, rack side plate; 5, impact pad; 6, anvil block; 7, base plate; 8, gland nut; 9, buffering spacer; 10, test product; 11, piston packing; 12, piston; 13, dead bolt guide cylinder; 14, dead bolt; 15, dead bolt O-ring seal; 16, locking cylinder; 17, locking cylinder installing plate; 18, rear clip; 19, clip mount pad; 20, front clip; 21, upper block; 22, buffer spring; 23, spring guidepost; 24, rotary support block; 25, swivel bearing; 26, turning axle; 27, buffer plate; 28, cushioning support-saddle; 29, source of the gas; 30, threeway; 31, locking cylinder decompressor; 32, locking cylinder solenoid valve; 33, impact cylinder decompressor; 34, impact cylinder air inlet electromagnetic valve; 35, impact cylinder pressure-releasing electromagnetic valve valve; 36, pressure transducer; 37, four-way.
Embodiment
Because many defects of the prior art, inventor, after studying for a long period of time and putting into practice in a large number, proposes a kind of novel vertical impact testing equipment, uses the needs meeting practical application.In conjunction with a preferred embodiment of the present invention, content of the present invention is elaborated as follows.
Pneumatic type high acceleration vertical impact table involved by this preferred embodiment primarily of compositions such as piston component, buffer gear, piston limit releasing mechanism, support, impact cylinders, wherein,
Described piston component can comprise gland nut, buffering spacer, test product, piston packing, piston.Piston upper end face has the groove installing test product, and circumferencial direction has two seals groove, installs piston packing, after test product installs, covers, then tighten gland nut with buffering spacer, ensures that test product compresses.Or as another selectable scheme, test product also can be directly installed on the upper surface of piston, and according to the size of test product, multiple test product can be installed, and compress test product by buffering spacer and gland nut equally.
Described buffer gear can comprise block, buffer spring, spring guidepost, rotary support block, swivel bearing, turning axle, buffer plate, cushioning support-saddle.Install swivel bearing in rotary support block, the rotary sleeve on impact cylinder is in rotary support block, and back-up block bottom of walking around is dropped on buffer plate, and buffer plate is arranged on cushioning support-saddle.Rotary support block top mounting spring guidepost, spring guidepost installs buffer spring, compresses buffer spring topmost by a upper block.
Described piston limit releasing mechanism can comprise dead bolt guide cylinder, dead bolt, dead bolt O-ring seal, locking cylinder, locking cylinder installing plate.Impact cylinder has the hole of a dead bolt, impact cylinder welds a dead bolt guide cylinder, and dead bolt is arranged in guide cylinder, dead bolt is provided with two dead bolt O-ring seals, connect the piston rod of locking cylinder after dead bolt, locking cylinder is arranged on rack side plate by locking cylinder installing plate.
Postscript, also can comprise an air-channel system in this preferred embodiment, this air-channel system can comprise threeway, locking cylinder decompressor, locking cylinder solenoid valve, impact cylinder decompressor, impact cylinder air inlet electromagnetic valve, impact cylinder pressure-releasing electromagnetic valve, four-way, pressure transducer.The pressurized air that source of the gas exports provides locking cylinder decompressor, impact cylinder decompressor respectively by threeway.After the decompression of locking cylinder decompressor, be connected to locking cylinder solenoid valve, by air feed and the venting of locking cylinder solenoid control locking cylinder; After the decompression of impact cylinder decompressor, be connected to impact cylinder air inlet electromagnetic valve air intake opening, the outlet of impact cylinder air inlet electromagnetic valve is by a four-way, be connected respectively to impact cylinder, impact cylinder venting electromagnetism and pressure transducer, impact cylinder air inlet electromagnetic valve controls the air inlet of impact cylinder, and impact cylinder pressure-releasing electromagnetic valve controls the venting of impact cylinder.
In such scheme, described impact cylinder is arranged on buffer gear by a turning axle, and impact cylinder can rotate arbitrarily around turning axle, facilitates impact cylinder to install piston component at horizontal level.
In such scheme, described impact cylinder is supported by buffer gear, slows down the impulsive force of impact cylinder to support in impact process.
In such scheme, described rotary support block is stuck in the groove of rack side plate, can move up and down.Upper block is also arranged in the U-lag of rack side plate, can adjust position up and down, the original pressure of adjustment buffer spring.
In such scheme, described test product is directly installed in the groove of the upper surface of piston, and the size according to test product can install multiple test product, and top buffering spacer, gland nut compress test product.
In such scheme, described impact cylinder welds a dead bolt guide cylinder, and impact cylinder has opened a dead bolt hole in dead bolt guide cylinder position, and dead bolt and dead bolt guide cylinder two dead bolt O-ring seals seal, and ensures that the gas in impact cylinder can not be leaked by dead bolt guide cylinder.
In such scheme, there is boss the inner position on the upper side of described impact cylinder, ensures that the restraining position that piston component shifts piston cylinder onto just makes dead bolt stretch out, latching ram.
In such scheme, an impact cylinder air intake opening is installed on described impact cylinder top, and middle part is symmetrically welded two turning axles, turning axle positive lower weld dead bolt guide cylinder.
In such scheme, described support is welded by channel-section steel or square steel, and frame bottom is welded on one piece of base plate, and rack side plate top is directly welded on frame upper, and side reinforcement is welded on support, and lower weld is on base plate.Base plate installs an anvil block, anvil block is freely placed an impact pad.
In such scheme, two clip mount pads are installed on described side plate top, clip mount pad are installed former and later two clips, for blocking impact cylinder in impact cylinder upright position.
In such scheme, impact cylinder diameter at 100 ~ 200mm, between impact cylinder effective travel 300 ~ 600mm, working pressure 1MPa ~ 10Mpa.Locking cylinder diameter of phi 60 ~ Φ 100mm, working pressure 1 ~ 6MPa.
This pneumatic type high acceleration vertical impact table operationally, first according to impact acceleration and the duration of pulse of test product test needs, can be determined the pressure that impact cylinder needs, selects corresponding impact pad.Locking cylinder and impact cylinder charge pressure is adjusted in advance by locking cylinder decompressor and impact cylinder decompressor.
The course of work of this pneumatic type high acceleration vertical impact table can be:
Take off piston, be arranged on by test product in the mounting groove of upper piston area, top buffering spacer, gland nut compress test product.Open impact cylinder pressure-releasing electromagnetic valve, impact cylinder air intake opening and air are connected.By impact cylinder horizontal positioned, put into piston component, with a push rod, piston component is shifted onto the positive stop lug boss position of impact cylinder, open locking cylinder solenoid valve, locking cylinder forward is inflated, and locking cylinder piston rod outwards moves, promotion dead bolt stretches out, and dead bolt inserts in impact cylinder, prevents piston from falling.Impact cylinder is turned over after turning 90 degrees upright position, be close to front clip, then tighten rear clip, the position of restriction impact cylinder.
After installment work completes, close impact cylinder pressure-releasing electromagnetic valve, open impact cylinder air inlet electromagnetic valve, impact cylinder air inlet, after detecting impact cylinder pressure to set pressure by pressure transducer, close impact cylinder air inlet electromagnetic valve.Close locking cylinder solenoid valve, the venting of locking cylinder forward, oppositely air inlet, locking cylinder piston rod is retracted, and pulls dead bolt to exit impact cylinder, release plunger.Piston component under the effect of impact cylinder upper pressure, accelerated motion, until piston lower surface collides the impact pad that anvil block is installed, the surge waveform required for generation.After impact completes, impact cylinder pressure-releasing electromagnetic valve is opened, and bleeds off the residual gas in impact cylinder.One-shot has been tested.
By adjusting the stiffness tuning duration of pulse of impact pad, impact pad can adopt the materials such as rubber slab, felt, ox-hide, copper coin.
Maximum impact accekeration can be conveniently regulated by the charge pressure adjusting impact cylinder.Impact cylinder surge pressure setting range is large, and therefore impact acceleration has larger setting range.
Before the test, need to demarcate impact acceleration and duration of pulse, to determine the charge pressure of impact cylinder and to choose suitable impact pad.Demarcation can adopt built-in miniature acceleration demarcating module to be arranged on piston to carry out calibration measurements.For the ease of installing acceleration demarcating module, can piston component be redesigned, making the weight of demarcating piston component identical with the piston component weight that test adopts.
Further, consulting shown in Fig. 1-Fig. 7 is a preferred embodiment of the present invention, and the present embodiment impact cylinder internal diameter Ф 150mm, impact cylinder length is 1500mm, piston movement stroke 500mm, impact cylinder design pressure 6MPa, piston and test product general assembly (TW) 15kg.Maximum impact end speed can reach 65m/s.
The present embodiment gas to piston maximum thrust 105kN, locking cylinder nominal diameter 100mm, maximum design pressure 6MPa.
The source of the gas of the present embodiment is provided by an air compressor, and source of the gas rated pressure 10MPa, flow is not less than 750L/min.Impact cylinder charge pressure adjustable range 1 ~ 6MPa, locking cylinder adjustable pressure limit 1 ~ 6MPa.Also can be source of the gas with nitrogen cylinder.
The accessible technical indicator of the present embodiment is:
1, impact acceleration scope: 500 ~ 5000g
2, duration of shock pulse: 10 ~ 3ms
3, velocity variable: 120m/s.
The present embodiment is particularly suited for quality and is less than 0.5kg test product.
Each parts of the present embodiment and annexation thereof are:
Test product 10 is arranged in the mounting groove opened piston 12 upper surface, after test product 10 installs, covers with buffering spacer 9, and gland nut 8 internal thread is tightened in the threaded rod of piston 12 top, and compresses buffering spacer 9 and test product 10.Piston 12 circumferencial direction has two seal grooves, installs two piston packings 11.
Swivel bearing 25 is installed in rotary support block 24, turning axle 26 on impact cylinder 3 is enclosed within walks around in back-up block 24, back-up block 24 bottom of walking around is dropped on buffer plate 27, buffer plate 27 four screws are arranged on buffering supporting base 28, and cushioning support-saddle 28 four screws are arranged on bearing side plate 4.Spring guidepost 23 is welded to rotary support block 24 top, spring guidepost 23 is installed buffer spring 22, and compress buffer spring 22 by a upper block 21 topmost, upper block 21 four screws are arranged on rack side plate 4.
Dead bolt guide cylinder 13 is welded on impact cylinder 3, dead bolt 14 is arranged in guide cylinder 13, dead bolt 14 circumferencial direction has two seal grooves, two dead bolt O-ring seals 15 are installed, dead bolt 14 rear threads hole is connected with the threaded piston rod of locking cylinder 16, locking cylinder 16 four screws are first connected on locking cylinder installing plate 17, and locking cylinder installing plate 17 is fixed on rack side plate 4 with four screws again.
Two the clip mount pads 19 in left and right, 3 screws are fixed on rack side plate 4, and front clip 20 and rear clip 18 are fixed on clip mount pad 19 with two screws respectively.
Support 1 is welded on base plate 7, and rack side plate 4 top is directly welded on support 1 top, and side reinforcement is welded on support 1, and lower weld is on base plate 7.Anvil block 6 four screws are fixed on base plate 7, anvil block 6 are freely placed an impact pad 5.
Source of the gas 29 is connected with threeway 30 by tracheae, threeway 30 tow channel gas, and a road is connected with inflator pump reduction valve 33, and a road is connected with locking cylinder reduction valve 31.Locking cylinder reduction valve 31 exports and connects locking cylinder solenoid valve 32, and locking cylinder solenoid valve 32 is two 5 three-way electromagnetic valves, and oppositely air intake opening is connected, normally closed air intake opening is connected with locking cylinder 16 forward air intake opening wherein often to drive gas port and locking cylinder 16 into.Inflator pump reduction valve 33 exports and connects impact cylinder air inlet electromagnetic valve 34, and impact cylinder air inlet electromagnetic valve 34 exports connection four-way 37, and four-way 37 connects impact cylinder pressure-releasing electromagnetic valve 35, pressure transducer 36 and impact cylinder air intake opening 2 respectively.
In above-described embodiment, except connecting with the high pressure flexible metallic conduit that inside nominal diameter is Ф 6 between four-way 37 and impact cylinder air intake opening 2, all the other all adopt inside nominal diameter to be the interface selection standard interface of Ф 8 Stainless Steel steel pipe, each gas circuit device.
In above-described embodiment, support 1 seamless cold square steel tube (GB3094-82a) welding, specification 80 × 60 × 4 selected by square steel, support 1 width 850mm, overall height 2100mm.Rack side plate 4 selects 20mm steel plate, steel plate materials Q235, width 200mm.The each square steel by specification 80 × 60 × 4 of rack side plate about 4 and support 1 weld.
In above-described embodiment, buffer spring 22 central diameter 40mm, spring diameter 8mm, the number of turn 15, initial length 260mm, it is 180mm that upper block 21 compresses rear length.
In above-described embodiment, buffer plate 27 adopts nylon66 fiber nonmetallic materials, not only ensures certain hardness but also have good buffering effect.
In above-described embodiment, rotary support block 24 for being slidably matched, ensures impact cylinder 3 not double swerve in impact process in the groove of rack side plate 4.
In above-described embodiment, can be provided with in the middle of piston 12 and alleviate groove, also can design the piston component of different structure according to different test products 10.
The course of work of the present embodiment can be: after impact cylinder is gone to horizontal level, piston component is put into impact cylinder, dead bolt stretches out, piston limit.Then impact cylinder is gone to plumbness, after fixing with clip, inflate to impact cylinder, be inflated to set pressure, dead bolt is extracted by locking cylinder, the downward accelerated motion of air push piston component in air chamber, the impact pad on piston collisions anvil block, produces the impact acceleration and duration of pulse that need.
The present embodiment is simple and compact for structure, by the accelerated motion of high pressure air drives piston, can produce larger impact energy, and by regulating charge pressure and impact pad, can realize different impact accelerations and duration of pulse.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and implement according to this; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or amendment, all should be encompassed within protection scope of the present invention.
Claims (10)
1. a pneumatic type high acceleration vertical impact table, is characterized in that, it comprises:
One impact cylinder (3), it is fixedly installed on a support (1), described impact cylinder (3) top is provided with impact cylinder air intake opening (2), and described impact cylinder air intake opening (2) with in order to provide the source of the gas of pressure gas to be communicated with, meanwhile, described impact cylinder (3) is also provided with impact cylinder gas outlet;
One piston component, it is located in impact cylinder (3), and coordinate with impact cylinder (3) inner wall sealing, and also can a select location between impact cylinder two ends and being free to slide between impact cylinder lower end, described select location is positioned at impact cylinder air intake opening (2) below, and described piston component upper end is also provided with at least one test product installation position simultaneously;
One piston limit releasing mechanism, it is for being locked in the select location on described impact cylinder in the first operative state by piston component, and in a second operative state by the select location release of piston component on described impact cylinder;
One anvil block (6), it is located at immediately below impact cylinder (3), and described anvil block (6) is provided with impact pad (5).
2. pneumatic type high acceleration vertical impact table according to claim 1, it is characterized in that, described impact cylinder (3) is arranged on support (1) by symmetrical two feathering axis (26), and described impact cylinder (3) can rotate arbitrarily around described turning axle (26).
3. pneumatic type high acceleration vertical impact table according to claim 2, it is characterized in that, described impact cylinder (3) is arranged on support (1) by buffer gear, described buffer gear comprises rotary support block (24), buffer plate (27) and cushioning support-saddle (28), wherein, swivel bearing (25) is provided with in described rotary support block (24), described swivel bearing (25) coordinates with the feathering axis (26) be arranged on impact cylinder (3), and, described rotary support block (24) top is provided with spring guidepost (23), bottom is arranged on buffer plate (27), described spring guidepost (23) is provided with buffer spring (22), described buffer spring (22) top is provided with block (21), described buffer plate (27) is arranged on cushioning support-saddle (28).
4. pneumatic type high acceleration vertical impact table according to claim 3, it is characterized in that: described support (1) comprises rack side plate (4), described rotary support block (24) and upper block (21) are all movably set in the draw-in groove be distributed on rack side plate (4), and all can vertically move.
5. pneumatic type high acceleration vertical impact table according to claim 1, is characterized in that, described piston component comprises:
One piston (12), its upper end face is provided with at least one test product installation position, and outer wall is provided with above seal groove together, is provided with piston packing (11) in described seal groove;
At least one buffering spacer (9), it is covered on test product (10);
And at least one is for being pressed abd fixed on the gland nut (8) on piston (12) by described buffering spacer (9) and test product (10).
6. pneumatic type high acceleration vertical impact table according to claim 5, is characterized in that, described test product installation position comprises the test product mounting groove being located at piston (12) upper surface.
7. the pneumatic type high acceleration vertical impact table according to any one of claim 1-6, it is characterized in that, described piston limit releasing mechanism comprises a dead bolt (14), described dead bolt (14) freely can be walked in the upper dead bolt hole arranged of impact cylinder (3), and be sealed and matched with described dead bolt hole, meanwhile, described dead bolt (14) is also connected with retractable driving device.
8. pneumatic type high acceleration vertical impact table according to claim 7, it is characterized in that, described piston limit releasing mechanism also comprises a dead bolt guide cylinder (13), described dead bolt guide cylinder (13) is fixedly connected with impact cylinder (3), described dead bolt (14) is located in described dead bolt guide cylinder (13), and described dead bolt (14) is also sealed and matched through at least one dead bolt O-ring seal (15) and described dead bolt guide cylinder (13) and dead bolt hole.
9. pneumatic type high acceleration vertical impact table according to claim 7, it is characterized in that, described retractable driving device comprises locking cylinder (16), described locking cylinder (16) is arranged on by locking cylinder installing plate (17) on the rack side plate (4) in described support (1), and the piston rod of locking cylinder (16) is fixedly connected with dead bolt (14).
10. pneumatic type high acceleration vertical impact table according to claim 7, it is characterized in that, near described select location, be also provided with the position-limit mechanism for stoping piston component up in described impact cylinder (3), described position-limit mechanism comprises the lug boss be distributed on described impact cylinder (3) inwall.
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| CN201210321144.8A CN102788676B (en) | 2012-09-03 | 2012-09-03 | Pneumatic type high acceleration vertical impact table |
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