CN103389197B - Horizontal impact testing stand driving means and bidirectional multifunctional horizontal impact testing stand - Google Patents

Horizontal impact testing stand driving means and bidirectional multifunctional horizontal impact testing stand Download PDF

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Publication number
CN103389197B
CN103389197B CN201310323243.4A CN201310323243A CN103389197B CN 103389197 B CN103389197 B CN 103389197B CN 201310323243 A CN201310323243 A CN 201310323243A CN 103389197 B CN103389197 B CN 103389197B
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China
Prior art keywords
cylinder
testing stand
workbench
impact testing
horizontal impact
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CN201310323243.4A
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Chinese (zh)
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CN103389197A (en
Inventor
吴斌
郁南
徐曼
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苏州世力源科技有限公司
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Priority to CN201310323243.4A priority Critical patent/CN103389197B/en
Publication of CN103389197A publication Critical patent/CN103389197A/en
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Abstract

The invention discloses a kind of horizontal impact testing stand driving means and bidirectional multifunctional horizontal impact testing stand.This driving means includes expansion cylinder more than two, the most any one group of expansion cylinder includes first, second cylinder body cooperated, described first, second cylinder body is fixing with the workbench of horizontal impact testing stand and base respectively to be connected, and this workbench is arranged on a guide rail, and can move along guide rail.This testing stand includes workbench, base, aforementioned driving means and striker.Inventive drive means uses low-pressure gas to be power, simple in construction, safe and reliable, drive thrust big, accelerator is short, only need shorter slideway, cost is low, and floor space is little, and can control impact acceleration value by regulation air pressure easily, the accuracy of surge waveform and repeatability are high, and drastically increase test efficiency;The testing stand of the present invention can complete classical shock and response spectra on same stage body simultaneously, and fully meets the requirement of little load level impact test.

Description

Horizontal impact testing stand driving means and Bidirectional multifunctional horizontal impact testing stand
Technical field
The present invention relates to a kind of horizontal impact testing stand, particularly to a kind of horizontal impact testing stand driving means and the bidirectional multifunctional horizontal impact testing stand of applying this driving means.
Background technology
Shock table is mainly used in the dynamic environmental test of product, shock pulse and the impact energy of reality can be simulated, analog equipment is using, loading and unloading and is expecting in transportation the non-repeatability impact that can suffer from, to determine the product adaptation ability to various shock environments.
In existing impact test specification, one is regulation ballistic movement (such as half-sine pulse, final peak saw tooth shock pulse etc.) and tolerances thereof.Another kind is shock response spectrum specification, and it is to describe the damage that system is caused by ballistic movement, and object of interest is not the surge waveform itself causing this response, but impact acts on the effect of structure, equipment or system.Being the shock wave of a kind of complicated concussion type particularly with actual shock environments such as rocket launching, the most substantially not meeting reality if the most still simulated with classical shock waveform etc..
At present, impact test equipment uses free-electron model formula shock machine to realize mostly, by weight-driven (part installs auxiliary augmentor additional).Its principle is: be arranged on the table top of workbench by test specimen, hoisting mechanism discharge after test specimen being risen to predetermined altitude together with workbench, test specimen and workbench free-electron model, impact on the waveform generator installed on base, thus produce the shock pulse of needs.
But, the impact test to some test specimen, it is necessary to use horizontal impact or inclined impact method.At present, the horizontal impact testing stand of external import uses the deformation energy of elastic threads to be that power (such as the horizontal impact testing stand of MTS company) produces the impact initial velocity needed.Because the deformation energy relying on elastic threads puts aside energy, so needing longer accelerator, cause slideway longer.Owing to requiring slideway precision higher, cost is expensive, and floor space is big.Along with access times increase, elastic threads is gradually strained, and its coefficient of elasticity declines therewith, the most then need to change, and use and maintenance cost is higher.Inclined impact method is with weight component as driving force, but owing to angle of inclination can not be too big, less by tilting the weight component of generation, it is also desirable to the longest slideway could produce needed for impact initial velocity.
What shock response spectrum testing machine was the most commonly used is Charpy response spectra testing machine, and this shock response spectrum testing machine structure is complicated, and cost is high, takes up room big, and the shortcoming such as wayward excited by impact.
Summary of the invention
A kind of horizontal impact testing stand driving means of offer is provided, its have simple and compact for structure, slideway is short, thrust is big, efficiency high, can be applicable in classical shock and response spectra shock table, thus overcome deficiency of the prior art.
Another object of the present invention is to provide a kind of bidirectional multifunctional horizontal impact testing stand.
For achieving the above object, present invention employs following technical scheme:
A kind of horizontal impact testing stand driving means, including expansion cylinder more than two, the most any one group of expansion cylinder includes the first cylinder body and the second cylinder body cooperated, described first cylinder body and the second cylinder body are fixing with the workbench of horizontal impact testing stand and base respectively to be connected, described workbench is arranged on a guide rail, and can move along described guide rail.
As more one of preferred embodiment, described first cylinder body includes the outer shell mainly formed by the circular cylindrical cavity being arranged within workbench, and described second cylinder body includes inner casing.
As more one of preferred embodiment, described second cylinder body is connected with screw axis through oscillating bearing, and described nail axle is connected to the second cylinder through inner casing contiguous block and connects on seat, and described second cylinder connection seat is fixing with base to be connected.
As more one of preferred embodiment, in described outer shell, it is also equipped with copper sheathing, and the one end activity of the most described inner casing is inserted in described copper sheathing.
As more one of preferred embodiment, sealing through cylinder end socket and more than one sealing ring and coordinate between described outer shell and inner casing, described cylinder end socket is arranged on the end face of described workbench.
As more one of preferred embodiment, outer shell that at least two oppositely arranged in described workbench, is distributed.
A kind of bidirectional multifunctional horizontal impact testing stand, including workbench, base, driving means and striker, waveform generator and/or response impact table top are installed on described striker, it is characterised in that described driving means includes aforementioned levels shock table driving means.
As more one of preferred embodiment, described bidirectional multifunctional horizontal impact testing stand also includes the locking device in order to table lock to terminate in select location, described locking device includes the tapered end coordinated with workbench, described tapered end is connected with pneuma-lock mechanism through flexible member, described pneuma-lock mechanism includes cylinder block, being provided with piston in described cylinder block, described piston and can match around the push rod one end that a rotating shaft rotates, and described push rod the other end is arranged with tapered end linkage.
As more one of preferred embodiment, described bidirectional multifunctional horizontal impact testing stand also includes brake gear, described brake gear includes controlling brake cylinder, the piston rod of described control brake cylinder is connected with skidding block, and described skidding block coordinates with the brake article installed on the table.
As more one of preferred embodiment, described guide rail uses trapezoidal rails, and described workbench also has the structure coordinated with described trapezoidal rails.
As more one of preferred embodiment, described workbench be also equipped with guide rail patch in order to the position coordinated with guide rail.
Compared with prior art, the present invention at least has the advantage that
(1) this horizontal impact testing stand driving means uses low-pressure gas to be power, simple in construction, safe and reliable, drive thrust big, accelerator is short, only need shorter slideway, cost is low, and floor space is little, and can control impact acceleration value by regulation air pressure easily, the accuracy of surge waveform and repeatability are high, and drastically increase test efficiency;
(2) utilize this bidirectional multifunctional horizontal impact testing stand, classical shock and response spectra can be completed on same stage body, can effectively save operation cost, improve test efficiency, especially can fully meet the requirement of little load level impact test.
Accompanying drawing explanation
Fig. 1 is the structural representation of bidirectional multifunctional horizontal impact testing stand in the present invention one better embodiment;
Fig. 2 be bidirectional multifunctional horizontal impact testing stand shown in Fig. 1 A-A to cross-sectional view;
Fig. 3 is the structural representation of a kind of expansion cylinder in the present invention one better embodiment;
Fig. 4 is the structural representation of a kind of locking device in the present invention one better embodiment;
Fig. 5 is the structural representation of a kind of brake gear in the present invention one better embodiment;
Description of reference numerals: base 1, horizontal impact equipment 2, response impact table top 3, programmer 4, workbench 5, prevent turning over seat 6, shock plate 7, pneuma-lock mechanism 8, tapered end 9, guide rail 10, mounting bracket 11, tailstock 12, cylinder connects seat 13, cylinder connects seat 14, cylinder connects seat 15, inner casing contiguous block 16, screw axis 17, oscillating bearing 18, inner casing 19, sealing ring 20, cylinder end socket 21, sealing ring 22, copper sheathing 23, piston 24, locking cylinder barrel 25, spring 26, push rod 27, brake cylinder 28, mounting seat 29, skidding block 30, brake article 31.
Detailed description of the invention
As previously mentioned, in view of existing level shock testing machine slideway length, cost is high, the shortcoming such as big that takes up room and the complicated drawback of respective impact response spectra testing machine structure, one aspect of the present invention aims to provide a kind of short stroke, the horizontal impact testing stand driving means of high thrust, fully to meet the requirement of little load level impact test.
Simultaneously, as another aspect of the present invention, additionally provide a kind of bidirectional multifunctional horizontal impact testing stand designed based on this horizontal impact testing stand driving means, it has the features such as simple in construction, and classical shock and response spectra can be completed on same stage body, then can effectively save operation cost, improve test efficiency.
About horizontal impact testing stand driving means and the basic design scheme of bidirectional multifunctional horizontal impact testing stand of the present invention, addressing the most in detail, here is omitted.
In more among preferred embodiment of the present invention, refering to Fig. 1-Fig. 3, this bidirectional multifunctional horizontal impact testing stand actuating device of atmospheric pressure is mainly made up of expansion cylinder and workbench two parts, and workbench 7 is arranged on guide rail 12, can seesaw, this guide rail preferably employs rail plate;Workbench inner cylindrical cavity is as the outer shell of expansion cylinder;The inner casing 19 of expansion cylinder connects with oscillating bearing 18, is connected to cylinder by screw axis 17 and inner casing contiguous block 16 and connects on seat 15, and connects with base 1;Installing copper sheathing 23 in the cylindrical cavity body of workbench end face side, outer face is installed cylinder end socket 21, is realized cylinder seal by sealing ring 20,22.
The relevant content of this more preferred embodiment is explained as follows:
1, in such scheme, described workbench preferably employs wrought aluminium part, and its barycenter is low compared with rail plate, it is ensured that installs the barycenter of test specimen aftertable and test specimen assembly with guide rail the most on one wire, thus reduces the rolling moment in impact process.
2, in such scheme, coordinating for trapezoidal rails, workbench bottom and trapezoidal rails of rail plate, this kind of fit system is easily adjusted the left and right distance of workbench, reduces as far as possible and coordinates interval, it is ensured that transverse movement is little in impact process.
3, in such scheme, the part that workbench and rail plate coordinate is stained with guide rail patch, on the one hand avoids aluminum to wear and tear on steel guide rail, increases the service life of machine;On the other hand reduce frictional force, make working table movement more flexible.
4, in such scheme, having copper sheathing in workbench inner cylindrical cavity, inner casing slides on copper sheathing, on the one hand reduces the requirement on machining accuracy to cavity, and the steel of inside and outside cylinder body can be avoided cylinder friction.
5, in such scheme; inner casing position fixed component; it connects seat by oscillating bearing, screw axis, inner casing contiguous block, cylinder; final sum base connects; middle oscillating bearing of installing can allow cylinder outer shell move within the specific limits; can be with effective compensation in impact process about inner casing and workbench, upper and lower swing, protection cylinder is hardly damaged;
6, in such scheme, inside workbench, be preferably equipped with two opposite direction outer shells, be workbench can in the stroke of guide rail both direction freely-movable, it is ensured that complete the impact process of classical shock and response spectra.
More specifically, be there is the expansion cylinder basic structure as driving means of two groups of inside and outside cylinder body compositions by employing, and its outer shell and workbench are grouped together into moving component, inner casing and base are connected to become fixed component by parts such as bulbs, by retaining mechanism, moving component is pinned, when doing classical shock, it is passed through low-pressure gas to an inner casing and with savings energy and reaches the initial driving thrust that design requires.When retaining mechanism unlocks, moving component is accelerated motion on rail plate under driving force effect, until clashing into waveform generator, and the rigidity of regulation waveform generator, impact peak value acceleration and the pulse duration of requirement can be produced.And as shock response time spectrum, it is passed through low-pressure gas to another inner casing and with savings energy and reaches the initial driving thrust that design requires, when retaining mechanism unlocks, moving component is accelerated motion on rail plate under driving force effect, impact response table top, after governing response table top, the spring rate before the stiffness coefficient of spring, response table top and the blowing pressure of inner casing, can produce the shock response spectrum curve chart of requirement.
Referring to shown in Fig. 1-Fig. 3 being the bidirectional multifunctional horizontal impact testing stand more related in preferred embodiment of the present invention, its cylinder connects seat 13,14 and guide rail 12 is fixed on base 1, and comprises forward and reverse two groups of expansion cylinders.During work, after pneuma-lock mechanism 8 makes tapered end 9 lock workbench 7 by spring 26, according to required impact test type, inflate in forward expansion cylinder, regulate after the pressure in this cylinder is setting value, pneuma-lock mechanism 8 inflates, piston 25 moves upward, push rod 27 is driven to move downward, pull tapered end 9 downward, release workbench 7, workbench 7 is accelerated motion on guide rail 12 under the effect of gas pressure, waveform generator on impact seat or response impact table top, produce corresponding surge waveform, control the gas in rapid-release valve release forward expansion cylinder simultaneously, and control brake cylinder 29 and inflate, the piston rod of brake cylinder stretches out, drive skidding block 30 and workbench brake article 31 friction brake installed below, prevent secondary from rebounding.After having impacted, inverse expansion cylinder charge, control workbench and return to original position, prepare impact test next time.
Compressed air needed for this this bidirectional multifunctional horizontal impact testing stand actuating device of atmospheric pressure runs 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 is according to driving its range of accommodation of pressure size 0.3~0.7MPa.Driving pressure to select according to required impact energy and load, expansion cylinder cylinder diameter is proper between 100~150mm.
This bidirectional multifunctional horizontal impact testing stand, when doing classical shock, loads at 400kg, and driving cylinder bore is 140mm, when driving pressure is 0.6MPa, can reach impact peak value acceleration 1000m/s2, pulse duration 11ms;
When doing response spectra impact, loading at 100kg, peak response acceleration can reach 5000g.
Due to the utilization of technique scheme, the present invention compared with prior art has the advantage that
1, driving force is big, and accelerator is short, only needs shorter slideway, and floor space is little, and simple in construction is safe and reliable;
2, impact velocity is fast, and it is high to control impact acceleration, the accuracy of surge waveform and repeatability by regulation air pressure easily, drastically increases test efficiency;
3, use rail plate, do not impact clutter, and service life is long;
4, using full air pressure to drive, easy to use, maintenance cost is low;
5, on same stage body, both can do classical shock, response spectra impact can have been done again.
It is pointed out that above-mentioned preferred embodiment is only technology design and the feature of the explanation present invention, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this.All equivalence changes made according to spirit of the invention or modification, all should contain within protection scope of the present invention.

Claims (10)

1. a bidirectional multifunctional horizontal impact testing stand, including workbench, base, driving Device and striker, described striker is provided with waveform generator and/or response impact table top, It is characterized in that, described bidirectional multifunctional horizontal impact testing stand also includes in order to by table lock Terminating in the locking device of select location, described locking device includes the tapered end coordinated with workbench, Described tapered end is connected with pneuma-lock mechanism through flexible member, and described pneuma-lock mechanism includes gas Cylinder body, is provided with piston, described piston and the push rod one that can rotate around a rotating shaft in described cylinder block Matching ends, described push rod the other end is arranged with tapered end linkage.
Bidirectional multifunctional horizontal impact testing stand the most according to claim 1, its feature Being, described bidirectional multifunctional horizontal impact testing stand also includes brake gear, and described brake fills Putting and include controlling brake cylinder, the piston rod of described control brake cylinder is with skidding block even Connecing, described skidding block coordinates with the brake article installed on the table.
Bidirectional multifunctional horizontal impact testing stand the most according to claim 1, its feature Being, described driving means includes expansion cylinder more than two, the most any one group of expansion cylinder Including the first cylinder body cooperated and the second cylinder body, described first cylinder body and the second cylinder body respectively Fixing with workbench and base and be connected, described workbench is arranged on a guide rail, and can be along described Guide rail moves.
Bidirectional multifunctional horizontal impact testing stand the most according to claim 3, its feature Being, described first cylinder body includes mainly being formed by the circular cylindrical cavity being arranged within workbench Outer shell, described second cylinder body includes inner casing.
5. according to the bidirectional multifunctional horizontal impact testing stand described in claim 3 or 4, its Being characterised by, described second cylinder body is connected with screw axis through oscillating bearing, and described nail axle is through inner casing Contiguous block is connected to the second cylinder and connects on seat, and it is fixing with base even that described second cylinder connects seat Connect.
Bidirectional multifunctional horizontal impact testing stand the most according to claim 4, its feature It is, in described outer shell, is also equipped with copper sheathing, and the one end activity of the most described inner casing is inserted It is located in described copper sheathing.
Bidirectional multifunctional horizontal impact testing stand the most according to claim 4, its feature It is, seals through cylinder end socket and more than one sealing ring between described outer shell and inner casing and coordinate, Described cylinder end socket is arranged on the end face of described workbench.
Bidirectional multifunctional horizontal impact testing stand the most according to claim 4, its feature It is, outer shell that at least two oppositely arranged in described workbench, is distributed.
Bidirectional multifunctional horizontal impact testing stand the most according to claim 3, its feature Being, described guide rail uses trapezoidal rails, and described workbench also has and described trapezoidal rails The structure coordinated.
Bidirectional multifunctional horizontal impact testing stand the most according to claim 9, its feature Be, described workbench in order to the position coordinated with guide rail be also equipped with guide rail patch.
CN201310323243.4A 2013-07-29 2013-07-29 Horizontal impact testing stand driving means and bidirectional multifunctional horizontal impact testing stand CN103389197B (en)

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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
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
CN105092201B (en) * 2015-09-08 2017-10-31 苏州福艾斯振动系统有限公司 A kind of double direction impulse testing stand
CN105953997B (en) * 2016-07-15 2018-10-02 芜湖赛宝信息产业技术研究院有限公司 A kind of high acceleration shock testing machine
CN106404332B (en) * 2016-08-30 2019-03-15 丁超 A kind of fire-fighting sprinkler tip mechanical shock resistance automatic test equipment
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
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
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

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