CN103389197A - Drive device of horizontal impacting test bed and bi-directional multifunctional horizontal impacting test bed - Google Patents
Drive device of horizontal impacting test bed and bi-directional multifunctional horizontal impacting test bed Download PDFInfo
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- CN103389197A CN103389197A CN2013103232434A CN201310323243A CN103389197A CN 103389197 A CN103389197 A CN 103389197A CN 2013103232434 A CN2013103232434 A CN 2013103232434A CN 201310323243 A CN201310323243 A CN 201310323243A CN 103389197 A CN103389197 A CN 103389197A
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Abstract
The invention discloses a drive device of a horizontal impacting test bed and a bi-directional multifunctional horizontal impacting test bed. The drive device comprises more than two groups of expansion cylinders, wherein any one group of expansion cylinders comprise a first cylinder body and a second cylinder body which are mutually matched and fixedly connected with a work bench and a base of the horizontal impacting test bed respectively; the work bench is arranged on one guide track and can move along the guide track; and the test bed comprises the work bench, the base, the drive device and an impacting seat. The drive device adopts low-pressure gas as power, and is simple in structure, safe, reliable, large in drive push force and short in accelerating process; only a shorter sliding track is required, so that the construction cost is small, and small area is occupied, an impacting overload value can be conveniently controlled by adjusting air pressure, the accuracy and the repeatability of an impacting wave form are high, and the testing efficiency is improved greatly; and simultaneously, the test bed can complete classic impacting and response spectra on the same bed body, so that the small-load horizontal impacting test requirements can be sufficiently met.
Description
Technical field
The present invention relates to a kind of horizontal impact testing table, particularly a kind of horizontal impact testing table drive unit and the bidirectional multifunctional horizontal impact testing table of applying this drive unit.
Background technology
Shock table is mainly used in the dynamic environmental test of product, can simulate actual shock pulse and impact energy, analog equipment expects that in use, loading and unloading and transportation the non-repeatability that may suffer impacts, to determine the adaptive faculty of product to various shock environments.
In existing impulse test standard, a kind of is regulation ballistic motion (as half-sine pulse, final peak saw tooth shock pulse etc.) and tolerance requirement thereof.Another kind is the shock response spectrum standard, and it is to describe ballistic motion to the damage that system causes, and the object of being concerned about is not the surge waveform itself that causes this response, but percussive action is in structure, the effect of equipment or system.Especially the shock environment for reality such as rocket launching is a kind of shock wave of complicated concussion type, if at this moment still with classical shock waveform etc., simulate and just obviously do not meet reality.
At present, impact test equipment adopts free drop testing machine to realize mostly, by segregation drive (part installs auxiliary augmentor additional).Its principle is: test specimen is arranged on the table top of worktable, discharge after by hoisting gear, test specimen being risen to predetermined altitude together with worktable, test specimen and worktable freely fall, and impact on the waveform generator of installing on base, thereby produce the shock pulse that needs.
But,, to the impulse test of some test specimen, must adopt horizontal impact or inclined impact method.At present, the deformation energy of the horizontal impact testing table of external import employing elastic threads is the impact initial velocity that power (as the horizontal impact testing table of MTS company) produces to be needed.Because rely on the deformation energy of elastic threads to put aside energy, so the accelerator that need to grow causes slideway longer.The slideway precision is higher owing to requiring, and cost is very expensive, and floor area is large.Along with access times increase, elastic threads is strained gradually, and its elasticity coefficient descends thereupon, need change to a certain extent, and use and maintenance cost is higher.The inclined impact method is take weight component as driving force, but because angle of inclination can not be too large, the weight component that produces by inclination is less, also needs the slideway of growing could produce required impact initial velocity very much.
What the shock response spectrum testing machine generally adopted at present is pendulum shock response spectrum testing machine, and this shock response spectrum testing machine structure is complicated, and cost is high, take up room large, and the shortcoming such as wayward excited by impact.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of horizontal impact testing table drive unit, its have simple and compact for structure, slideway is short, thrust is large, the efficiency high, can be applicable in classical shock and response spectra shock table, thereby overcome deficiency of the prior art.
Another object of the present invention is to provide a kind of bidirectional multifunctional horizontal impact testing table.
For achieving the above object, the present invention has adopted following technical scheme:
A kind of horizontal impact testing table drive unit, comprise two groups of above expansion cylinders, wherein any one group of expansion cylinder comprises the first cylinder body and the second cylinder body that cooperatively interacts, described the first cylinder body is fixedly connected with base with the worktable of horizontal impact testing table respectively with the second cylinder body, described worktable is arranged on a guide rail, and can move along described guide rail.
As one of comparatively preferred embodiment, described the first cylinder body comprises the outer shell that mainly by the circular cylindrical cavity that is arranged at worktable inside, is formed, and described the second cylinder body comprises inner casing.
As one of comparatively preferred embodiment, described the second cylinder body is connected with screw axis through oscillating bearing, and described nail beam warp inner casing contiguous block is connected on the second cylinder Connection Block, and described the second cylinder Connection Block is fixedly connected with base.
, as one of comparatively preferred embodiment, copper sheathing also is installed in described outer shell, and an end activity of described at least inner casing is inserted in described copper sheathing.
As one of comparatively preferred embodiment, be sealed and matched through cylinder end socket and an above O-ring seal between described outer shell and inner casing, described cylinder end socket is arranged on an end face of described worktable.
, as one of comparatively preferred embodiment, be distributed with at least two outer shells that oppositely arrange in described worktable.
A kind of bidirectional multifunctional horizontal impact testing table, comprise worktable, base, drive unit and striker, waveform generator and/or response impact table top are installed on described striker, it is characterized in that, described drive unit comprises aforementioned levels shock table drive unit.
As one of comparatively preferred embodiment, described bidirectional multifunctional horizontal impact testing table also comprises in order to table lock is terminated in the locking device of select location, described locking device comprises the tapered end that coordinates with worktable, described tapered end is connected with pneuma-lock mechanism through flexible member, described pneuma-lock mechanism comprises cylinder block, be provided with piston in described cylinder block, described piston can match around push rod one end of a rotating shaft rotation with one, and described push rod the other end and tapered end interlock arrange.
As one of comparatively preferred embodiment, described bidirectional multifunctional horizontal impact testing table also comprises brake gear, described brake gear comprises the control brake cylinder, the piston rod of described control brake cylinder is connected with the skidding piece, and described skidding piece coordinates with the brake article on being arranged on worktable.
As one of comparatively preferred embodiment, described guide rail adopts trapezoidal rails, and described worktable also has the structure that coordinates with described trapezoidal rails.
As one of comparatively preferred embodiment, the position in order to guide rail, to coordinate of described worktable also is equipped with guide rail and pastes.
Compared with prior art, the present invention has following advantage at least:
(1) this horizontal impact testing table drive unit employing low-pressure gas is power, simple in structure, safe and reliable, drive thrust large, accelerator is short, only need shorter slideway, cost is low, and floor area is little, and can control the impact acceleration value by adjustable pressure easily, the accuracy of surge waveform and repeatability are high, and have greatly improved test efficiency;
(2) utilize this bidirectional multifunctional horizontal impact testing table, can complete classical shock and response spectra on same stage body, can effectively save operation cost, improve test efficiency, especially can fully meet the requirement of little load horizontal impact test.
Description of drawings
Fig. 1 is the structural representation of bidirectional multifunctional horizontal impact testing table in the present invention's one preferred embodiments;
Fig. 2 be bidirectional multifunctional horizontal impact testing table shown in Figure 1 A-A to cross-sectional view;
Fig. 3 is the structural representation of a kind of expansion cylinder in the present invention's one preferred embodiments;
Fig. 4 is the structural representation of a kind of locking device in the present invention's one preferred embodiments;
Fig. 5 is the structural representation of a kind of brake gear in the present invention's one preferred embodiments;
description of reference numerals: base 1, horizontal impact equipment 2, table top 3 is impacted in response, sequencer 4, worktable 5, the anti-seat 6 that turns over, shock plate 7, pneuma-lock mechanism 8, tapered end 9, guide rail 10, mounting bracket 11, tailstock 12, cylinder Connection Block 13, cylinder Connection Block 14, cylinder Connection Block 15, inner casing contiguous block 16, screw axis 17, oscillating bearing 18, inner casing 19, O-ring seal 20, cylinder end socket 21, O-ring seal 22, copper sheathing 23, piston 24, locking cylinder barrel 25, spring 26, push rod 27, brake cylinder 28, mount pad 29, skidding piece 30, brake article 31.
Embodiment
As previously mentioned, in view of existing level shock testing machine slideway is long, cost is high, the drawback of the take up room shortcoming such as large and respective impact response spectra testing machine structure complexity, one aspect of the present invention aims to provide a kind of short stroke, the horizontal impact testing table drive unit of high thrust, fully to meet the requirement of little load horizontal impact test.
Simultaneously, as another aspect of the present invention, a kind of bidirectional multifunctional horizontal impact testing table that designs based on this horizontal impact testing table drive unit also is provided, it has the characteristics such as simple in structure, and can complete classical shock and response spectra on same stage body, then can effectively save operation cost, improve test efficiency.
About the basic design scheme of horizontal impact testing table drive unit of the present invention and bidirectional multifunctional horizontal impact testing table, address in detail in the preceding article, repeat no more herein.
Among of the present invention one comparatively preferred embodiment, consult Fig. 1-Fig. 3, this bidirectional multifunctional horizontal impact testing table actuating device of atmospheric pressure mainly is comprised of expansion cylinder and worktable two parts, and worktable 7 is arranged on guide rail 12, can seesaw, this guide rail preferably adopts rail plate; Worktable interior cylindrical cavity is as the outer shell of expansion cylinder; The inner casing 19 use oscillating bearings 18 of expansion cylinder connect, and are connected on cylinder Connection Block 15 by screw axis 17 and inner casing contiguous block 16, and are connected connection with base; Copper sheathing 23 is installed in worktable end face one side circular cylindrical cavity, and cylinder end socket 21 is installed in outer face, by O- ring seal 20,22, realizes cylinder seal.
The related content of this comparatively preferred embodiment is explained as follows:
1, in such scheme, described worktable preferably adopts wrought aluminium spare, and its barycenter is low than rail plate, can guarantee to install the barycenter of test specimen aftertable and test specimen assembly and guide rail substantially on a line, thereby reduces the rolling moment in impact process.
2, in such scheme, rail plate be trapezoidal rails, worktable bottom and trapezoidal rails coordinate, this kind fit system is easily adjusted the left and right distance of worktable, reduces to coordinate intermittently as far as possible, guarantees that transverse movement is little in impact process.
3, in such scheme, the part that worktable and rail plate coordinate is stained with guide rail and pastes, and avoids aluminium to wear and tear on steel guide rail on the one hand, increases the serviceable life of machine; Reduced on the other hand friction force, made working table movement more flexible.
4, in such scheme, in worktable interior cylindrical cavity, copper sheathing is arranged, inner casing slides on copper sheathing, reduces on the one hand the requirement on machining accuracy to cavity, and the steel that can avoid inside and outside cylinder body is to the cylinder friction.
5, in such scheme, inner casing position fixed part, it is by oscillating bearing, screw axis, inner casing contiguous block, cylinder Connection Block, the final sum base connects, the middle oscillating bearing of installing can allow the cylinder outer shell move within the specific limits, can effective compensation the swing of inner casing and worktable left and right, up and down in impact process, the protection cylinder is not fragile;
6, in such scheme, two outer shells in the other direction preferably are equipped with in worktable inside, are that worktable can both direction free movement in the stroke of guide rail, guarantee to complete the impact process of classical shock and response spectra.
More specifically, has the basic structure of the expansion cylinder of two groups of inside and outside cylinder bodies compositions as drive unit by employing, and its outer shell and worktable are combined and become moving component, inner casing and base are connected to become fixed part by parts such as bulbs, by latch mechanism, moving component is pinned, while doing classical shock, to an inner casing, pass into low-pressure gas with the savings energy and reach the initial driving thrust of designing requirement.When the latch mechanism release, moving component is accelerated motion on rail plate under the driving force effect,, until clash into waveform generator, regulates the rigidity of waveform generator, can produce impact peak value acceleration and the duration of pulse of requirement.And when the shock response spectrum, pass into low-pressure gas with the savings energy and reach the initial driving thrust of designing requirement to another inner casing, when the latch mechanism release, moving component is accelerated motion on rail plate under the driving force effect, impact response table top, the spring rate of the stiffness coefficient of governing response table top back spring, response table top front and the charge pressure of inner casing, can produce the shock response spectrum curve map of requirement.
Please again consulting Fig. 1-shown in Figure 3 is the bidirectional multifunctional horizontal impact testing table that relates in of the present invention one comparatively preferred embodiment, its cylinder Connection Block 13,14 and guide rail 12 be fixed on base 1, and comprise forward and reverse two groups of expansion cylinders.during work, after pneuma-lock mechanism 8 makes tapered end 9 locking worktable 7 by spring 26, according to needed impulse test type, inflate in the forward expansion cylinder, after regulating pressure in this cylinder and being setting value, 8 inflations of pneuma-lock mechanism, piston 25 moves upward, driving push rod 27 moves downward, pull tapered end 9 downward, discharge worktable 7, worktable 7 is in accelerated motion on guide rail 12 under the effect of gaseous tension, table top is impacted in waveform generator on the impact seat or response, produce corresponding surge waveform, control simultaneously rapid-release valve and discharge the interior gas of forward expansion cylinder, and control brake cylinder 29 and inflate, the piston rod of brake cylinder stretches out, drive brake article 31 friction brakes that skidding piece 30 and worktable are installed below, prevent the secondary bounce-back.After impact was completed, the inverse expansion cylinder charge, controlled worktable and get back to reference position, prepares impulse test next time.
The required pressurized air of this this bidirectional multifunctional horizontal impact testing table actuating device of atmospheric pressure operation can be provided by same air compressor, general driving pressure is not more than 0.6MPa, locking pressure is not more than 0.3MPa, and brake pressure its range of adjustment big or small according to driving pressure is at 0.3～0.7MPa.Driving pressure is selected according to needed impact energy and load, and the expansion cylinder cylinder diameter is proper between 100～150mm.
This bidirectional multifunctional horizontal impact testing table is when doing classical shock, and in the 400kg load, the driving cylinder bore is 140mm, when driving pressure is 0.6MPa, can reach impact peak value acceleration 1000m/s
2, duration of pulse 11ms;
When doing the response spectra impact, in the 100kg load, the peak response acceleration can reach 5000g.
Due to the utilization of technique scheme, the present invention compared with prior art has the following advantages:
1, driving force is large, and accelerator is short, only needs shorter slideway, and floor area is little, and is simple in structure, safe and reliable;
2, impact velocity is fast, and can control impact acceleration by adjustable pressure easily, and the accuracy of surge waveform and repeatability are high, have greatly improved test efficiency;
3, adopt rail plate, do not impact clutter, and long service life;
4, adopt full air pressure to drive, easy to use, maintenance cost is low;
5, both can do classical shock on same stage body, and can do again response spectra and impact.
It is pointed out that above-mentioned preferred embodiment only is explanation technical conceive of the present invention and characteristics, its purpose is to allow the person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (11)
1. horizontal impact testing table drive unit, it is characterized in that, it comprises two groups of above expansion cylinders, wherein any one group of expansion cylinder comprises the first cylinder body and the second cylinder body that cooperatively interacts, described the first cylinder body is fixedly connected with base with the worktable of horizontal impact testing table respectively with the second cylinder body, described worktable is arranged on a guide rail, and can move along described guide rail.
2. horizontal impact testing table drive unit according to claim 1, is characterized in that, described the first cylinder body comprises the outer shell that mainly by the circular cylindrical cavity that is arranged at worktable inside, is formed, and described the second cylinder body comprises inner casing.
3. horizontal impact testing table drive unit according to claim 1 and 2, it is characterized in that, described the second cylinder body is connected with screw axis through oscillating bearing, and described nail beam warp inner casing contiguous block is connected on the second cylinder Connection Block, and described the second cylinder Connection Block is fixedly connected with base.
4. horizontal impact testing table drive unit according to claim 2, is characterized in that, copper sheathing also is installed in described outer shell, and an end activity of described at least inner casing is inserted in described copper sheathing.
5. horizontal impact testing table drive unit according to claim 2, is characterized in that, is sealed and matched through cylinder end socket and an above O-ring seal between described outer shell and inner casing, and described cylinder end socket is arranged on an end face of described worktable.
6. horizontal impact testing table drive unit according to claim 2, is characterized in that, is distributed with at least two outer shells that oppositely arrange in described worktable.
7. bidirectional multifunctional horizontal impact testing table, comprise worktable, base, drive unit and striker, waveform generator and/or response impact table top are installed on described striker, it is characterized in that, described drive unit comprises the described horizontal impact testing table of any one drive unit in claim 1-6.
8. bidirectional multifunctional horizontal impact testing table according to claim 7, it is characterized in that, it also comprises in order to table lock is terminated in the locking device of select location, described locking device comprises the tapered end that coordinates with worktable, described tapered end is connected with pneuma-lock mechanism through flexible member, and described pneuma-lock mechanism comprises cylinder block, is provided with piston in described cylinder block, described piston with can match around push rod one end of a rotating shaft rotation, described push rod the other end and tapered end interlock setting.
9. bidirectional multifunctional horizontal impact testing table according to claim 7, it is characterized in that, it also comprises brake gear, described brake gear comprises the control brake cylinder, the piston rod of described control brake cylinder is connected with the skidding piece, and described skidding piece coordinates with the brake article on being arranged on worktable.
10. bidirectional multifunctional horizontal impact testing table according to claim 7, is characterized in that, described guide rail adopts trapezoidal rails, and described worktable also has the structure that coordinates with described trapezoidal rails.
11. bidirectional multifunctional horizontal impact testing table according to claim 10, is characterized in that, the position in order to guide rail, to coordinate of described worktable also is equipped with guide rail and pastes.
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| CN103712767A (en) * | 2014-01-07 | 2014-04-09 | 北京卫星环境工程研究所 | Pneumatic device for pneumatic type horizontal impact table |
| CN104515668A (en) * | 2014-12-26 | 2015-04-15 | 广西科技大学 | Ejection-type horizontal impact platform driven by air pressure |
| CN104697779A (en) * | 2015-03-23 | 2015-06-10 | 煤炭科学技术研究院有限公司 | Test-bed of fully mechanized coal mining hydraulic support column |
| CN105092201A (en) * | 2015-09-08 | 2015-11-25 | 苏州福艾斯振动系统有限公司 | Bi-directional impact test platform |
| CN105953997A (en) * | 2016-07-15 | 2016-09-21 | 芜湖赛宝信息产业技术研究院有限公司 | High-acceleration impact testing machine |
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| CN107884149A (en) * | 2016-09-30 | 2018-04-06 | 北京机电工程研究所 | Shake test structure in one kind top destroys recognition methods |
| CN106546405B (en) * | 2017-01-17 | 2018-11-16 | 西安百纳电子科技有限公司 | A kind of horizontal continuity impact test apparatus and test method |
| CN109540451A (en) * | 2019-01-15 | 2019-03-29 | 苏州世力源科技有限公司 | A kind of energy-storage type vertical impact testing stand |
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| CN113865820A (en) * | 2021-09-29 | 2021-12-31 | 太原理工大学 | Impact device and test method for simulating horizontal impact on structural member |
| CN114199496A (en) * | 2022-02-18 | 2022-03-18 | 天津航天瑞莱科技有限公司 | High-magnitude classical impact test device and using method thereof |
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| CN103712767A (en) * | 2014-01-07 | 2014-04-09 | 北京卫星环境工程研究所 | Pneumatic device for pneumatic type horizontal impact table |
| CN104515668A (en) * | 2014-12-26 | 2015-04-15 | 广西科技大学 | Ejection-type horizontal impact platform driven by air pressure |
| CN104697779A (en) * | 2015-03-23 | 2015-06-10 | 煤炭科学技术研究院有限公司 | Test-bed of fully mechanized coal mining hydraulic support column |
| CN104697779B (en) * | 2015-03-23 | 2016-06-15 | 煤炭科学技术研究院有限公司 | A kind of comprehensive mining hydraulic bracket column testing table |
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| CN106404332B (en) * | 2016-08-30 | 2019-03-15 | 丁超 | A kind of fire-fighting sprinkler tip mechanical shock resistance automatic test equipment |
| CN106404332A (en) * | 2016-08-30 | 2017-02-15 | 菏泽海诺知识产权服务有限公司 | Device for automatically testing mechanical shock resistance of fire-fighting sprinkler head |
| CN107884149A (en) * | 2016-09-30 | 2018-04-06 | 北京机电工程研究所 | Shake test structure in one kind top destroys recognition methods |
| CN106525373B (en) * | 2016-11-28 | 2018-10-16 | 西安百纳电子科技有限公司 | A kind of horizontal impact response spectra measuring device |
| CN106525373A (en) * | 2016-11-28 | 2017-03-22 | 西安百纳电子科技有限公司 | Horizontal impact response spectrometry apparatus |
| CN106546405B (en) * | 2017-01-17 | 2018-11-16 | 西安百纳电子科技有限公司 | A kind of horizontal continuity impact test apparatus and test method |
| CN106918435A (en) * | 2017-04-21 | 2017-07-04 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of integrated blow cylinder device |
| CN106837924A (en) * | 2017-04-21 | 2017-06-13 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of blow cylinder device |
| CN109540451A (en) * | 2019-01-15 | 2019-03-29 | 苏州世力源科技有限公司 | A kind of energy-storage type vertical impact testing stand |
| CN109540451B (en) * | 2019-01-15 | 2024-06-07 | 苏州世力源科技有限公司 | Energy storage type vertical impact test stand |
| CN112045871A (en) * | 2020-09-10 | 2020-12-08 | 东南大学 | Stone pineapple machine |
| CN113865820A (en) * | 2021-09-29 | 2021-12-31 | 太原理工大学 | Impact device and test method for simulating horizontal impact on structural member |
| CN114199496A (en) * | 2022-02-18 | 2022-03-18 | 天津航天瑞莱科技有限公司 | High-magnitude classical impact test device and using method thereof |
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