CN205317439U - Pneumatic perpendicular impact test machine of big high g value of load - Google Patents

Abstract

The utility model provides a pneumatic perpendicular impact test machine of big high g value of load, it mainly includes shell assembly, five parts of anvil assembly, table surface assembly, centre gripping release assembly and cylinder assembly. This impact test machine carries out the double expansion in driving actuating cylinder promotes drive RAM perpendicular the explosion energy of air bubble is big downwards with higher speed, can make test piece on the test bench obtain the impact acceleration of big magnitude, simultaneously because the drive of table surface assembly drives actuating cylinder by the air bubble cooperation and drive RAM realizes, and drive RAM and drive and may not establish the sealing washer between the actuating cylinder, the frictional resistance during table surface assembly up -and -down motion almost can ignore, so also can effectively increase the load that to install additional on the table surface, make and carry out the collision test enable to the heavy load test piece. Simultaneously this test bench still has compact structure, and it is simple to constitute spare parts structure, handling ease, cost advantage such as lower.

Description

A kind of big load high-g level pneumatic vertical shock table

Technical field

This utility model relates to shock-testing and the experimental technique field of mechanical environment, particularly to one big load high-g level pneumatic vertical shock table.

Background technology

Under high-g level acceleration shock environment, system components and parts will bear huge inertial load, for ensureing that system has high shock resistance overload capacity, guarantee that system can be properly functioning under high g value impact environment, components and parts and system thereof must be carried out high g value impact environmental test, to verify its reliability. For the components and parts of quality and small volume, its impact test can utilize the technology such as existing Hopkinson strut device, pendulum hookup, vertical impact device, air bubble, throw-off practice to realize. It is semisinusoidal high g value impact environment to tens microseconds, impulse waveform that Hopkinson depression bar technology can realize impact acceleration 100,000 g to 200,000 g, pulsewidth hundreds of, but load is only small. Air bubble and throw-off practice technology and actual high g shock environment closest to, load capacity is little, it is necessary to special place, and structure is complicated, and the test period is long, costly. Pendulum and vertical impact device can realize 50,000 g to 100,000 g, tens microseconds to the shock pulse of a few tens of milliseconds, multiple waveforms, and when g value is higher, load capacity sharply declines. For quality measured piece below several kilograms, both devices are high g value impact research techniques most widely used at present, especially vertical impact device.

Current vertical impact device both domestic and external mainly adopts the modes such as the acceleration of free-electron model, spring energy-storage, compressed gas-driven to realize, principle is to be mounted on work top by measured piece, adopt and by some way platform is risen to certain height, then discharge, table top and measured piece is made to collide with anvil block together, produce high g value impact environment, can pass through to change the making contact condition between table top and anvil block, regulate shock pulse waveform. as Chinese utility model patent (patent No.: 201110302992.X) discloses a kind of simple and easy high-g level acceleration shock table, including base, column, the seat of honour, head response assembly, clamping controls assembly and jumper bar assembly, tested sensor screw is installed on the head response upper surface of head response assembly, connect circuit, head response catch is blocked outer, head response upper surface, tighten head response catch screw, sensor and jumper bar that in guarantee jumper bar assembly, jumper bar is arranged on head response when vertically falling have identical initial velocity, with portable liter of jumper bar to certain altitude, being clamped and mention joystick by supporting rod in clamping control assembly makes supporting rod draw-in groove block supporting rod, the height that record jumper bar promotes, set acquisition system parameter, jumper bar high velocity vertical is with certain initial velocity and base collision reaction, produce high-g level acceleration impact signal.But this acceleration shock table can not meet some measured piece quality relatively big (such as dozens or even hundreds of kilogram), impact acceleration in several thousand g values, pulsewidth at the high g value impact testing experiment of millisecond to a few tens of milliseconds, therefore it is still necessary to the shock table of big load, high-g level is studied.

Utility model content

The shortcoming of prior art in view of the above, the purpose of this utility model is in that to provide a kind of big load high-g level pneumatic vertical shock table, meets that high-g level level, heavy load ability, pulsewidth be relatively big and adjustable impact environmental testing demand.

For achieving the above object and other relevant purposes, this utility model provides a kind of big load high-g level pneumatic vertical shock table, comprising: cage assembly, described cage assembly includes housing main body, and described housing main body is the tubular structure that inside is provided with cavity;

Anvil block assembly, described anvil block assembly includes anvil body, described anvil body is the tubular structure that inside is provided with cavity, described anvil body is positioned at the cavity of described housing main body, the upper surface of described anvil body is provided with waveform adjusting pad, the lower end of described anvil body is provided with damping device, the main body otch that the sidewall of described anvil body is provided with through, cylinder assembly, described cylinder assembly includes driving cylinder, described driving cylinder is positioned at the cavity of described anvil body, described driving cylinder lower ending opening, described driving cylinder is connected with a sealing plate, described sealing plate is positioned on a pressure bladder, after the inflation of described pressure bladder, described sealing plate seals by the lower ending opening of described driving cylinder, it is provided with driving piston in described driving cylinder, the inner chamber of described driving cylinder is divided into driving upper chamber of air cylinder room and drives lower chamber of air cylinder room by described driving piston, described driving cylinder is provided with pressurized gas inlet, described pressurized gas inlet connects with described driving upper chamber of air cylinder room, table top assembly, described table top assembly includes table top main body, described table top main body is positioned at above described anvil body, and the lower end of described table top main body is connected with a pull bar, and described pull bar sequentially passes through described anvil body, the upper surface of driving cylinder is fixed with described driving piston and is connected, clamping release assembly, described clamping release assembly includes bracing frame, support frame as described above is provided with wing plate, described wing plate is connected through the groove on described anvil body sidewall and described housing main body are fixing, described driving cylinder is fixing with described support member to be connected, and support frame as described above is provided with the clamp release mechanism for clamping and discharge described pull bar.

Preferably, described clamp release mechanism includes Spring Card and pressure ring, the central authorities of described Spring Card are provided with cylindrical hole, outer peripheral face is taper seat, the described pull bar described cylindrical hole of traverse, the inner peripheral surface of described pressure ring is taper seat, described pressure ring is positioned at the top of described Spring Card, the inner peripheral surface of described pressure ring matches with the outer peripheral face of described Spring Card, described draw ring and a push-pull mechanism connect, described push-pull mechanism can drive described pressure ring to move up and down, when described push-pull mechanism drives described pressure ring to move down, described pressure ring compresses described Spring Card, described Spring Card clamps described pull bar, when described push-pull mechanism drives described pressure ring to move up, described pressure ring departs from described Spring Card, described Spring Card discharges described pull bar.

Preferably, described push-pull mechanism includes a cylinder seat, described cylinder seat is provided with at least one cylinder chamber, push-and-pull piston it is provided with in described cylinder chamber, described cylinder chamber is sealed by cylinder cap, and described push-and-pull piston is connected with pulling shaft, and one end of described pulling shaft is connected through described cylinder cap with described pressure ring, described chamber is divided into Gang Zuo upper chamber and cylinder seat lower chambers two parts by described push-and-pull piston, and described Gang Zuo upper chamber connects with braking air inlet.

Preferably, described pressure ring is also connected with a back-moving spring.

Preferably, described damping device is a shock-absorption air bag, and described shock-absorption air bag and an anvil block base plate connect, and described anvil block base plate is connected with described anvil body.

Preferably, the bottom of described housing main body is additionally provided with a shell bottom plate, and described shock-absorption air bag, between described anvil block base plate and described shell bottom plate, is additionally provided with a pushing out ring between described anvil block base plate and described shell bottom plate.

Preferably, described pull bar is hollow pull rod.

Preferably, described anvil body is provided with the anvil body air bubble exhaust duct passageway for exhaustor traverse, and with the anvil body air bubble exhaust duct passageway symmetrical holes of described anvil body air bubble exhaust duct passageway symmetric design.

Preferably, the cavity of described housing main body is provided with for described anvil body being carried out spacing anvil block limiting stand terrace.

Preferably, being provided with driving piston limit step surface in described driving cylinder, when described driving piston is resisted against on described driving piston limit step surface, the volume of described driving upper chamber of air cylinder room is less than the volume of described driving lower chamber of air cylinder room.

As it has been described above, big load high-g level pneumatic vertical shock table of the present utility model has the advantages that

1) during the work of this testing stand, air bubble release compression air is adopted to enter in driving cylinder, carrying out double expansion in driving cylinder promotes driving piston to accelerate vertically downward, the explosion energy of air bubble is big, the explosion energy of air bubble as much as possible can convert the initial velocity of work top assembly to, thus obtaining big impact acceleration; And different explosion energies can be obtained by its volume and gas pressure size, therefore can match according to measured piece quality size and impact g value horizontal size, flexibly and easily.

2) owing to the driving of work top assembly drives cylinder with air bubble and drives piston to realize, driving and can not set sealing ring between piston and driving cylinder, therefore, frictional resistance when work top assembly moves up and down almost is negligible; Resistance when promoting work top assembly can be reduced so on the one hand, particularly after rising to working depth, clamping device needs the power vertically downward overcome to be only the deadweight of work top assembly and measured piece so that the holding force that adds of clamp release mechanism is greatly reduced; Also can be effectively increased on work top the load that can install additional on the other hand, make that heavy load test specimen is carried out impact test and be possibly realized.

3) whole test platform structure is compact, and composition component structural is simple, and handling ease is less costly.

Accompanying drawing explanation

Fig. 1 is the main assembly three dimensional structure sectional view of this utility model embodiment.

Fig. 2 is the planar structure schematic diagram of this utility model embodiment.

Fig. 3 is the sectional view of this utility model embodiment clamping release assembly part.

Fig. 4 is the structural representation of this utility model embodiment clamping release structure.

Element numbers explanation

1, housing main body; 2, anvil body; 3, anvil block base plate; 4, shock-absorption air bag; 5, shell bottom plate; 6, waveform adjusting pad; 7, table top main body; 8, pull bar; 9, piston is driven; 10, nut; 11, cylinder is driven; 12, bracing frame; 13, bolt; 14, sealing plate; 15, pressure bladder; 16, bracket; 17, bolt; 18, pushing out ring is propped up; 19, hanger; 20, Spring Card; 21, pressure ring; 22, pulling shaft; 23, cylinder cap;24, push-and-pull piston; 25, back-moving spring; 26, retainer ring; 27, nut; 28, cylinder seat; 29, sealing ring; 30, bolt; 31, cylinder retainer ring; 32, shock-absorption air bag air inlet pipe passage; 33, aerofluxus and pressure bladder and lift gas admission line passage; 34, anvil body otch; 35, sealing gasket; 36, sleeve; 37, bolt; 38, pressurized gas inlet; 39, anvil body air bubble exhaust duct passageway symmetrical holes; 40, anvil body air bubble exhaust duct passageway; 41, housing main body air bubble discharge duct passage; 42, air bubble discharge duct gathering hole cover plate; 43, screw; 44, housing main body air bubble discharge duct gathering hole; 45, anvil body air bubble discharge duct gathering hole; 46, clamping air inlet; 47, ear arm; 48, Gang Zuo upper chamber.

Detailed description of the invention

By particular specific embodiment, embodiment of the present utility model being described below, those skilled in the art the content disclosed by this specification can understand other advantages of the present utility model and effect easily.

Refer to Fig. 1 to Fig. 4. Notice, the structure of this specification institute accompanying drawings depicted, ratio, size etc., all only in order to coordinate the disclosed content of description, understand for those skilled in the art and read, it is not limited to the enforceable qualifications of this utility model, therefore do not have technical essential meaning, the adjustment of the modification of any structure, the change of proportionate relationship or size, under not affecting effect that this utility model can be generated by and the purpose that can reach, all should still drop in the scope that can contain of the disclosed technology contents of this utility model. Simultaneously, in this specification cited as " on ", D score, "left", "right", " centre " and " one " etc. term, it is merely convenient to understanding of narration, and it is not used to limit the enforceable scope of this utility model, the change of its relativeness or adjustment, changing under technology contents without essence, when being also considered as the enforceable category of this utility model.

As it is shown in figure 1, this utility model provides a kind of big load high-g level pneumatic vertical shock table, it mainly includes cage assembly I, anvil block assembly II, work top assembly III, clamping release assembly IV and V 5 parts of cylinder assembly.

As shown in Figure 2,3, cage assembly I includes housing main body 1, housing main body is the tubular structure of square-outside and round-inside, it is internally provided with cavity, being provided with shell bottom plate 5 bottom housing main body 1, the cavity bottom of housing main body 1 is provided with two interior step surfaces, and the step surface of top is for limiting the height that in anvil block assembly II, anvil body 2 rises, the step surface of lower end is provided with screwed hole, is used for fixing shell bottom plate 5. The upper end of housing main body 1 is provided with 4 hangers 19, and hanger 19 is threadeded with housing main body 1, and the upper surface of housing main body 1 is provided with the screwed hole installing hanger 19.

Housing main body 1 is additionally provided with housing main body air bubble discharge duct gathering hole 44, can be carried out the attended operation of air bubble discharge duct and the pressurized gas inlet 38 driven on cylinder by this gathering hole, air bubble discharge duct gathering hole cover plate 42 is connected with housing main body 1 with screw 43 shell bulk air big gun discharge duct gathering hole 44 is covered. Being additionally provided with aerofluxus and pressure bladder and lift gas admission line passage 33 on housing main body 1, can remove from this channel row after gas release when work top assembly III promotes, pressure bladder admission line and lifting admission line also can pass from this passage. Shell bottom plate 5 is provided with shock-absorption air bag air inlet pipe passage 32, and the admission line of amortisseur capsule can be there through.Being additionally provided with housing main body air bubble discharge duct passage 41 on housing main body 1, housing main body air bubble discharge duct passage 41 passes through for air bubble discharge duct.

Anvil block assembly II includes anvil body 2, anvil block base plate 3, shock-absorption air bag 4, waveform adjusting pad 6 and a pushing out ring 18. Anvil body 2 is positioned at the cavity of housing main body 1, anvil body 2 is the internal handstand cylindrical structure being provided with cavity, and its upper end is provided with aperture, and lower end is hatch frame, anvil body 2 lower end is connected with a damping device, and anvil body 2 is mobilizable is positioned at housing main body 1. As a kind of optimal way, anvil body 2 lower surface is provided with screwed hole, anvil block base plate 3 surrounding and middle part are provided with uniform connection through hole, the connection through hole of surrounding makes anvil block base plate 3 be connected with anvil body 2 by bolt, connection through hole bolt in the middle part of anvil block base plate 3 is connected with amortisseur capsule 4 upper surface, and shock-absorption air bag 4 lower surface is connected with shell bottom plate 5. Being additionally provided with a pushing out ring 18 between anvil block base plate 3 and shell bottom plate 5, a pushing out ring 18 is placed directly within shell bottom plate 5, can support the weight of the anvil block assembly of shock-absorption air bag more than 4 when shock-absorption air bag 4 unaerated. Anvil block base plate 3 external cylindrical surface is provided with step, coordinates with the step surface of top in housing main body 1 cavity, can be limited in the climb of anvil block assembly during shock-absorption air bag inflation.

The anvil body otch 34 being provided with through on the sidewall of anvil body 2, anvil body 2 upper surface is provided with waveform adjusting pad 6. Anvil body 2 be formed around symmetrical through groove and through hole, anvil body 2 is provided with anvil body air bubble exhaust duct passageway 40, anvil body air bubble exhaust duct passageway 40 is for the traverse of air bubble discharge duct, the anvil body air bubble exhaust duct passageway symmetrical holes 39 with anvil body air bubble exhaust duct passageway 40 symmetry can be offered on anvil body simultaneously, so can ensure the barycenter of anvil block assembly II on its axis. Anvil body 2 is additionally provided with anvil body air bubble discharge duct gathering hole 45, the attended operation of air bubble discharge duct and the pressurized gas inlet 38 driven on cylinder can be carried out by this gathering hole.

Work top assembly III, including table top main body 7, table top main body 7 is set to taper, and large end face upward, can design the screwed hole connecting measured piece, and small end face is provided with and the connecting hole of pull bar 8. Pull bar 8 is set to hollow structure, and lower end is provided with step surface and screw thread, and driving piston 9, to driving piston 9 to carry out spacing, is fixed by step surface by nut 10. Due to work top assembly III and be arranged on the measured piece on table top 7 operationally will by certain type of drive drive to obtain certain shock initial velocity, therefore work top assembly III total quality require more low more good. In consideration of it, the material such as superduralumin etc. that the optional density of the material of table top 7 is less, intensity satisfies condition, pull bar 8 is set to hollow structure to reduce quality simultaneously.

Clamping release assembly IV includes bracing frame 12, the main body of bracing frame 12 is cylindric, its external cylindrical surface is circumferentially with uniform 4 wing plate, the anvil body otch 34 that 4 wing plates are each passed through on anvil body 2 is fixedly connected by bolt 13 with housing main body 1, so bracing frame 12 can be fixed, also not interfere with anvil body 2 simultaneously and move up and down. Bracing frame 12 is provided with the clamp release mechanism for clamping and discharge pull bar 8. As shown in Figure 4, as a kind of optimal way, this clamp release mechanism includes Spring Card 20, pressure ring 21, pulling shaft 22, cylinder cap 23, push-and-pull piston 24, back-moving spring 25, retainer ring 26, nut 27, cylinder seat 28, sealing 29, bolt 30, bolt 37 and braking air inlet 46.Spring Card 20 is similar to the cutter chuck of numerical control machining center, and its central authorities are set to cylindrical hole, and outer peripheral face is taper seat, and surrounding is evenly distributed with otch, and its large conic end is externally provided with groove. Spring Card 20 is fixed by retainer ring 26, and retainer ring 26 includes identical two parts, becomes the cap-like structure that top is through hole after the two split after blocking the groove of Spring Card 20, and lower edge is formed around uniform connecting hole, is connected with cylinder seat 28 with bolt.

The inner peripheral surface of pressure ring 21 is taper seat, and outer peripheral face is the face of cylinder, and the inner peripheral surface of pressure ring 21 matches with the outer peripheral face of Spring Card 20. Cylinder seat 28 is fixed on the upper surface of bracing frame 12, and cylinder seat 28 4 jiaos is provided with symmetrical connecting hole, is connected fixing with bolt 37 with bracing frame 12 realization. Cylinder seat 28 is provided with symmetrical two cylinder chamber, is equipped with push-and-pull piston 24 in each cylinder chamber, is provided with through hole, external cylindrical surface and through hole and is equipped with seal groove in the middle part of push-and-pull piston 24. Cylinder chamber is divided into Gang Zuo upper chamber and cylinder seat lower chambers two parts by push-and-pull piston 24, is equipped with a clamping air inlet 46 and connects with corresponding Gang Zuo upper chamber in each cylinder chamber. It is provided with through hole and counterbore in the middle of cylinder seat 28, pull bar 8 traverse through hole, counterbore is used for installing back-moving spring 25, counterbore upper surface and cylinder chamber upper surface are equipped with uniform screwed hole, being respectively used to be connected with retainer ring 26 and cylinder cap 23 by bolt, cylinder cap 23 is used for making cylinder chamber seal, and cylinder cap 23 upper center is provided with through hole and seal groove, it is formed around uniform bolt connecting hole, is connected with cylinder seat 28 with bolt 30. Cylinder cap 23 lower end is tenon, and in the middle part of tenon, external cylindrical surface is provided with seal groove.

Push-and-pull piston 24 is connected with pulling shaft 22, is provided with through hole in the middle part of push-and-pull piston 24, and one end of pulling shaft 22 is through piston hole and connects fixing with nut, and the other end of pulling shaft 22 is connected through cylinder cap 23 with pressure ring 21, sealing ring 29 between pulling shaft 22 and cylinder cap 23. The middle and upper part of pressure ring 21 is provided with two ear arms 47, and two ear arms 47 are provided with through hole, and the other end of pulling shaft 22 is fixed through this through hole nut. Back-moving spring 25 is placed in the counterbore in pressure ring ear arm lower end external cylindrical surface and cylinder seat centre position, plays pretension and the effect helping pressure ring 21 to reset.

Cylinder assembly V includes driving cylinder 11, sealing plate 14, pressure bladder 15, bracket 16, bolt 17, cylinder retainer ring 31, sealing gasket 35, sleeve 36. Driving cylinder 11 for handstand drum structure, upper surface is provided with little through hole, pull bar 8 can from then on hole traverse, lower surface is hatch frame, and pull bar 8 coordinates with driving cylinder 11 sealing. Driving cylinder 11 to be positioned at the cavity of anvil body 2, the inner cylinder face at bracing frame 12 is provided with a step, can as the fixed mesa driving cylinder 11 upper surface. The position on the upper side driving cylinder 11 inner peripheral surface is provided with driving piston limit step, piston 9 is driven to be positioned at driving cylinder 11, drive piston 9 driving between cylinder 11 without carrying out sealing cooperation, drive piston 9 driving cylinder 11 inner chamber is divided into driving upper chamber of air cylinder room and drives lower chamber of air cylinder room two parts. When driving piston 9 to be resisted against on driving piston limit step, the volume of upper chamber of air cylinder room is driven to should be less than driving the volume of lower chamber of air cylinder room. The outer peripheral face driving cylinder 11 is provided with driving cylinder installation step, can pass through cylinder retainer ring 31 to driving cylinder 11 to be fixed. Cylinder retainer ring 31 is set to circulus, is provided with uniform connection through hole at band portions, is connected with bracing frame 12 by bolt.

Sealing plate 14 is for sealing the bottom driving cylinder 11, sealing plate 14 may be configured as cap-like structure, crown end face is provided with the through hole connecting pressure bladder 15 and promotes the air-filled pore of work top assembly III, sealing gasket 35 is pasted in shade upper surface, so when the brim portion on sealing plate 14 contacts with driving cylinder 11, it is possible to driving cylinder 11 is sealed. Bracket 16 is also set to cap-like structure, shade is provided with uniform connection through hole, through hole bolt 17 through sleeve 36 and cylinder retainer ring 31 is connected with bracing frame 12, emitting top end face and be provided with the through hole being connected with pressure bladder 15 and pressure bladder 15 air inlet pipe nipple orifice, pressure bladder 15 is between sealing plate 14 and bracket 16.

This shock table in use, first connects test sensor and source of the gas, is fixed by bolts to by measured piece in table top main body 7. Inflate first to amortisseur capsule 4 so that anvil block assembly II stops inflation when being increased to operating position. Inflate then to pressure bladder 15, stop inflation when reaching the sealing pressure that pressure bladder 15 sets, now drive cylinder 11 lower chambers to seal. Give and drive the inflation of lower chamber of air cylinder room, promote work top assembly III to operating position, inflating to the Gang Zuo upper chamber of two cylinder chamber of cylinder seat 28 while stopping inflation so that pressure ring 21 moves downward and causes Spring Card 20 to shrink, clamping pull bar 8 makes work top assembly III be maintained at operating position. Gas in release pressure bladder 15 so that drive lower chamber of air cylinder room to be in open state. Operating air bubble releasing compressed gas while the gas of two cylinder chamber of release cylinder seat 28, arrange certain time delay between the action of the former with the latter, to ensure first to release work top assembly III, air bubble is releasing compressed gas again. The compression gas that air bubble abrupt release stores is entered driving upper chamber of air cylinder room by pipeline through pressurized gas inlet 38, double expansion is carried out having just enter into driving upper chamber of air cylinder indoor, promote and drive piston 9 to drive the whole downward accelerated motion of work top assembly III, the lower surface making table top main body 7 and waveform adjusting pad 6 contact-impact being fixed on anvil body 2, to obtain high g value impact acceleration in table top main body 7. Produced impact acceleration g value level and pulse width thereof can be adjusted by material and the thickness of the pressure size of air bubble and waveform adjusting pad 6.

Air bubble release compression air is adopted to enter in driving cylinder during the work of this testing stand, carrying out double expansion in driving cylinder promotes driving piston to accelerate vertically downward, the explosion energy of air bubble is big, the explosion energy of air bubble as much as possible can convert the initial velocity of work top assembly to, thus obtaining big impact acceleration; And different explosion energies can be obtained by its volume and gas pressure size, therefore can match according to measured piece quality size and impact g value horizontal size, flexibly and easily. Owing to the driving of work top assembly drives cylinder with air bubble and drives piston to realize, driving and can not set sealing ring between piston and driving cylinder, therefore, frictional resistance when work top assembly moves up and down almost is negligible; Resistance when promoting work top assembly can be reduced so on the one hand, particularly after rising to working depth, clamping device needs the power vertically downward overcome to be only the deadweight of work top assembly and measured piece so that the holding force that adds of clamp release mechanism is greatly reduced;Also can be effectively increased on work top the load that can install additional on the other hand, make that heavy load test specimen is carried out impact test and be possibly realized. This testing stand also has compact conformation, the advantages such as composition component structural is simple, handling ease, less costly simultaneously. After tested, this shock table attainable maximum impact acceleration can reach thousands of g value, and the pulse duration is up to 1ms to tens ms, and load is up to 50kg. So, this utility model effectively overcomes various shortcoming of the prior art and has high industrial utilization.

Above-described embodiment only illustrative principle of the present utility model and effect thereof, not for restriction this utility model. Above-described embodiment all under spirit of the present utility model and category, can be modified or change by any those skilled in the art. Therefore, all art have all equivalence modification or changes that usually intellectual completes under the spirit disclosed without departing from this utility model with technological thought, must be contained by claim of the present utility model.

Claims (10)

1. a big load high-g level pneumatic vertical shock table, it is characterised in that comprising:

Cage assembly, described cage assembly includes housing main body, and described housing main body is the tubular structure that inside is provided with cavity;

Anvil block assembly, described anvil block assembly includes anvil body, described anvil body is the tubular structure that inside is provided with cavity, described anvil body is positioned at the cavity of described housing main body, the upper surface of described anvil body is provided with waveform adjusting pad, the lower end of described anvil body is provided with damping device, the main body otch that the sidewall of described anvil body is provided with through;

Cylinder assembly, described cylinder assembly includes driving cylinder, described driving cylinder is positioned at the cavity of described anvil body, described driving cylinder lower ending opening, described driving cylinder is connected with a sealing plate, described sealing plate is positioned on a pressure bladder, after the inflation of described pressure bladder, described sealing plate seals by the lower ending opening of described driving cylinder, it is provided with driving piston in described driving cylinder, the inner chamber of described driving cylinder is divided into driving upper chamber of air cylinder room and drives lower chamber of air cylinder room by described driving piston, described driving cylinder is provided with pressurized gas inlet, described pressurized gas inlet connects with described driving upper chamber of air cylinder room,

Table top assembly, described table top assembly includes table top main body, described table top main body is positioned at above described anvil body, and the lower end of described table top main body is connected with a pull bar, and described pull bar sequentially passes through described anvil body, the upper surface of driving cylinder is fixed with described driving piston and is connected;

Clamping release assembly, described clamping release assembly includes bracing frame, support frame as described above is provided with wing plate, described wing plate is connected through the main body otch on described anvil body sidewall and described housing main body are fixing, described driving cylinder is fixing with support frame as described above to be connected, and support frame as described above is provided with the clamp release mechanism for clamping and discharge described pull bar.

2. big load high-g level pneumatic vertical shock table according to claim 1, it is characterized in that: described clamp release mechanism includes Spring Card and pressure ring, the central authorities of described Spring Card are provided with cylindrical hole, outer peripheral face is taper seat, the described pull bar described cylindrical hole of traverse, the inner peripheral surface of described pressure ring is taper seat, described pressure ring is positioned at the top of described Spring Card, the inner peripheral surface of described pressure ring matches with the outer peripheral face of described Spring Card, described pressure ring and a push-pull mechanism connect, described push-pull mechanism can drive described pressure ring to move up and down, when described push-pull mechanism drives described pressure ring to move down, described pressure ring compresses described Spring Card, described Spring Card clamps described pull bar, when described push-pull mechanism drives described pressure ring to move up, described pressure ring departs from described Spring Card, described Spring Card discharges described pull bar.

3. big load high-g level pneumatic vertical shock table according to claim 2, it is characterized in that: described push-pull mechanism includes a cylinder seat, described cylinder seat is provided with at least one cylinder chamber, push-and-pull piston it is provided with in described cylinder chamber, described cylinder chamber is sealed by cylinder cap, described push-and-pull piston is connected with pulling shaft, one end of described pulling shaft is connected through described cylinder cap with described pressure ring, described chamber is divided into Gang Zuo upper chamber and cylinder seat lower chambers two parts by described push-and-pull piston, and described Gang Zuo upper chamber connects with braking air inlet.

4. big load high-g level pneumatic vertical shock table according to claim 2, it is characterised in that: described pressure ring is also connected with a back-moving spring.

5. big load high-g level pneumatic vertical shock table according to claim 1, it is characterised in that: described damping device is a shock-absorption air bag, and described shock-absorption air bag and an anvil block base plate connect, and described anvil block base plate is connected with described anvil body.

6. big load high-g level pneumatic vertical shock table according to claim 5, it is characterized in that: the bottom of described housing main body is additionally provided with a shell bottom plate, described shock-absorption air bag, between described anvil block base plate and described shell bottom plate, is additionally provided with a pushing out ring between described anvil block base plate and described shell bottom plate.

7. big load high-g level pneumatic vertical shock table according to claim 1, it is characterised in that: described pull bar is hollow pull rod.

8. big load high-g level pneumatic vertical shock table according to claim 1, it is characterized in that: described anvil body is provided with the anvil body air bubble exhaust duct passageway for exhaustor traverse, and with the anvil body air bubble exhaust duct passageway symmetrical holes of described anvil body air bubble exhaust duct passageway symmetric design.

9. big load high-g level pneumatic vertical shock table according to claim 1, it is characterised in that: the cavity of described housing main body is provided with for described anvil body being carried out spacing anvil block limiting stand terrace.

10. big load high-g level pneumatic vertical shock table according to claim 1, it is characterized in that: in described driving cylinder, be provided with driving piston limit step surface, when described driving piston is resisted against on described driving piston limit step surface, the volume of described driving upper chamber of air cylinder room is less than the volume of described driving lower chamber of air cylinder room.