CN109269821A - A kind of test method of large size high energy buffer - Google Patents
A kind of test method of large size high energy buffer Download PDFInfo
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- CN109269821A CN109269821A CN201811206476.5A CN201811206476A CN109269821A CN 109269821 A CN109269821 A CN 109269821A CN 201811206476 A CN201811206476 A CN 201811206476A CN 109269821 A CN109269821 A CN 109269821A
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- 239000000872 buffer Substances 0.000 title claims abstract description 154
- 238000010998 test method Methods 0.000 title claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 50
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims description 20
- 238000007405 data analysis Methods 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 8
- 230000003139 buffering effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 25
- 230000003116 impacting effect Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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- G01M7/08—Shock-testing
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Abstract
The invention discloses a kind of test methods of large-scale high energy buffer, comprising: setting can be along the impact vehicle of its free movement in orbit；It is fixedly mounted in orbit by impact pedestal, and the large-scale high energy buffer is fixedly mounted on by impact pedestal；It collides impact vehicle to by impact pedestal with different impact velocitys, gradually increases impact velocity, impacted with maximum impact speed to stopping after collision by impact pedestal when impacting vehicle；Wherein, in impact process, the impact velocity of impact vehicle and large-scale high energy buffer Contact is acquired using impact velocity acquisition system in orbit is installed；Real-time dynamical reaction data are acquired using the dynamical reaction acquisition system for the impact end for being mounted on large-scale high energy buffer；Real-time run-length data is acquired using the stroke acquisition system being mounted below large-scale high energy buffer.The present invention can carry out 1:1 test to large-scale high energy buffer, and meet buffer motionless operating condition in position after being collided.
Description
Technical field
The present invention relates to the experimental technique field of buffer more particularly to a kind of test methods of large-scale high energy buffer.
Background technique
To buffer carry out Dynamic performance examination can accurately measure buffer dynamic property (such as maximum dynamical reaction,
Maximum cushioning stroke, practical buffer capacity, S. E. A. etc.), to be conducive to the practical application of buffer.At this stage, state
The interior testing equipment for carrying out buffer Dynamic performance examination is divided into following three kinds: vibration mechine, drop weight test platform and impact
Testing stand.Vibration mechine and drop weight test platform are restricted to buffer size, not can be carried out the test of large-scale buffer.
Current shock table and the test method that buffer is tested using shock table mainly in combination with
The use situation of Iron-surfur clusters is designed and tests, and existing shock table specifically includes that the acclive track of tool, impact
Vehicle, by impact vehicle and stop vehicle；Wherein, it impacts vehicle, rail carriages production, buffer peace is all made of by impact vehicle and blocking vehicle
On by impact vehicle.When test, impact vehicle is drawn to the different location in ramp by trailer wagon and obtains different rush
Speed, release impact vehicle are hit, impact vehicle is just hit with certain speed to by impact vehicle, in the process ginseng required for acquisition
Number carries out determining whether buffer meets the requirements according to result.
Mainly designed according to Iron-surfur clusters due to current shock table and to the test method of buffer, exist with
Lower limitation: 1, being less than 600mm for installing the hitch rear overall length by impact vehicle of buffer, is unable to installation length greater than 3m's
Large-scale buffer；2, freely to stopping vehicle direction mobile can not be suitable for that buffer is required to exist after being collided by impact vehicle
The motionless operating condition in position after being collided.
Summary of the invention
The object of the invention is to provide a kind of large-scale high energy buffer to overcome the above-mentioned problems of the prior art
Test method, 1:1 test can be carried out to large-scale high energy buffer, and it is motionless to meet buffer position after being collided
Operating condition.
In order to realize above-mentioned purpose of the invention, the following technical schemes are provided:
A kind of test method of large size high energy buffer, comprising: setting can be along the impact vehicle of its free movement in orbit；
It is fixedly mounted by impact pedestal, and the large-scale high energy buffer is fixedly mounted on described by impact pedestal in orbit；
It collides impact vehicle to by impact pedestal with different impact velocitys, gradually increases impact velocity, when impact vehicle is with maximum impact
Speed is impacted to stopping after being collided by impact pedestal；Wherein, it in impact process, is adopted using the impact velocity for installing in orbit
Collecting system impacts the impact velocity of vehicle and the large-scale high energy buffer Contact to acquire；It is described large-scale high using being mounted on
Can the dynamical reaction acquisition system of impact end of buffer acquire the real-time dynamical reaction data of the large-scale high energy buffer；It utilizes
The stroke acquisition system below the large-scale high energy buffer is mounted on to acquire the real-time stroke of the large-scale high energy buffer
Data.
Preferably, further include, using Data Analysis Services system to the collected impact velocity of impact speed acquisition system,
Collected run-length data carries out dynamical reaction acquisition system in real time for collected dynamical reaction data and stroke acquisition system in real time
It analyzes and is fitted.
Preferably, in orbit be fixedly mounted by impact pedestal includes: that will be rushed using multiple adding pressure types friction seat
Pedestal is hit to be fixedly mounted in orbit；Wherein, the adding pressure type friction seat includes: anchor ear, is had respectively on the inside of the track
The two panels hoop pieces for clamping the track with outside；For the two panels hoop pieces to be clamped in multiple intervals of the track two sides
The bolt assembly of setting；Multiple spaced pressurizations for making the two panels hoop pieces clamp the rail top face and bottom surface are solid
Determine component；Wherein, between two neighboring bolt assembly be arranged a pressurization fixation kit, and the pressurization fixation kit with it is described
Bolt assembly is vertically arranged.
Preferably, the pressurization fixation kit include: be packed in it is upper in the space that the two panels hoop pieces and track are formed
Liner plate and lower liner plate；Pressurization bolt is penetrated at the top of the two panels hoop pieces in the space and after passing through the upper liner plate
Resist the lower liner plate.
Preferably, the pressurization bolt is threadedly coupled with the upper liner plate；The top of the lower liner plate is equipped with for positioning
The location dimples of the pressurization bolt bottom.
Preferably, the dynamical reaction acquisition system includes: the force snesor for acquiring dynamical reaction data in real time, is passed through
Mounting base is mounted on the impact end of the large-scale high energy buffer；The buffer protection that the force snesor impact end is arranged in is hit
Head；Wherein, the buffer protection is ramed is mounted in the mounting base by the several groups guide rod being circumferentially arranged, and the buffering is protected
Shield is ramed impacted after can be moved axially with guide rod along the large-scale high energy buffer.
Preferably, the buffer protection is ramed is made of animi resin material.
Preferably, the stroke acquisition system includes: the displacement sensor for acquiring run-length data in real time, and one end is logical
It crosses and holds middle device and be mounted on immediately below the mounting base, the other end is fixedly mounted on the cylinder body of the large-scale high energy buffer
Underface.
It is preferably, described that hold middle device include: two support rods for being symmetrically mounted on the mounting base lower part；Its both ends is logical
The slide bar that sliding nut is connected between two support rods is crossed, oscillating bearing is set among it；Wherein, the displacement sensing
One end of device connects the oscillating bearing.
Preferably, the impact end of the impact vehicle has rams adaptable impact head with the buffer protection.
The beneficial effects of the present invention are embodied in following aspect:
1) present invention by be fixed for installing in orbit large-scale high energy buffer by impact pedestal, meet buffer
The motionless operating condition in position after being collided；And it is adapted the size for being impacted pedestal and the size of large-scale high energy buffer,
Meet the test requirements document of large-scale high energy buffer 1:1；
2) present invention realizes comprehensive clamping to track, increasing friction force, and then ensure to be rushed by adding pressure type friction seat
It hits pedestal to be fastened on track, meets requirement motionless after colliding；
3) present invention is ramed in the impact end of large-scale high energy buffer using guide rod installation buffer protection come protection sensing
Device, and ensure the accuracy of force snesor acquisition data；
4) present invention on large-scale high energy buffer installation hold in device, guarantee that the pull rod of displacement sensor is being impacted
After be able to maintain it is straight, it is ensured that measurement is accurate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of pilot system used by the test method of large-scale high energy buffer of the invention；
Fig. 2 is A enlarged drawing shown in FIG. 1；
Fig. 3 be it is of the invention by impact pedestal by adding pressure type rub seat front view in orbit is fixedly mounted；
Fig. 4 is side view shown in Fig. 3；
Fig. 5 is the side view of adding pressure type friction seat of the invention；
Fig. 6 is the top view (pressurization fixation kit is not shown) of adding pressure type friction seat of the invention；
Fig. 7 is A-A cross-sectional view shown in fig. 6 (showing pressurization fixation kit)；
Fig. 8 is the mounting structure schematic diagram of dynamical reaction acquisition system of the invention；
Fig. 9 is the mounting structure schematic diagram of the drag link end of stroke acquisition system of the invention；
Figure 10 is B direction view shown in Fig. 9；
Figure 11 is dynamical reaction --- the stroke curve figure of the corresponding large-scale high energy buffer of 4m/s impact velocity.
Description of symbols: 1- track；2- impacts vehicle；21- impact head；3- is by impact pedestal；4- adding pressure type friction seat；
41- hoop pieces；42- bolt assembly；421- bolt；422- nut；43- pressurization fixation kit；The upper liner plate of 431-；Liner plate under 432-；
432a- location dimples；433- pressurization bolt；5- dynamical reaction acquisition system；51- force snesor；52- mounting base；53- buffer protection
It rams；54- guide rod；6- stroke acquisition system；61- displacement sensor；62- holds middle device；621- support rod；622- slides spiral shell
It is female；623- slide bar；624- oscillating bearing；7- large size high energy buffer；71- cylinder body；72- plunger；73- flange.
Specific embodiment
The present invention is suitable for carrying out 1:1 test to large-scale high energy buffer, and meets large-scale high energy buffer and rushed
Hit the motionless operating condition in rear position.
The present invention provides test system used by the test method and the test method of a kind of large-scale high energy buffer
System.As shown in Figure 1, the pilot system of large size high energy buffer provided by the invention, comprising: track 1；It can freely be transported along track 1
Dynamic impact vehicle 2；Be fixedly mounted on track 1 by impact pedestal 3, large-scale high energy buffer 7 is fixedly mounted thereon；It is mounted on
Impact velocity acquisition system on track 1；It is mounted on the dynamical reaction acquisition system 5 of the impact end of large-scale high energy buffer 7；Installation
Stroke acquisition system 6 below large-scale high energy buffer 7；Data Analysis Services system.
The test method of a kind of large-scale high energy buffer provided by the invention, comprising: setting can be along its freedom on track 1
The impact vehicle 2 of movement；It is fixedly mounted on track 1 by impact pedestal 3, and large-scale high energy buffer 7 is fixedly mounted on and is rushed
It hits on pedestal 3；It collides impact vehicle 2 to by impact pedestal 3 with different impact velocitys, gradually increases impact velocity, work as impact
Vehicle 2 is impacted with maximum impact speed to stopping after being collided by impact pedestal 3.In impact process, on track 1 using installation
Impact velocity acquisition system impacts the impact velocity of vehicle 2 and large-scale 7 Contact of high energy buffer to acquire；It is big using being mounted on
The dynamical reaction acquisition system 5 of the impact end of type high energy buffer 7 acquires the real-time dynamical reaction data of large-scale high energy buffer 7；
The real-time number of strokes of large-scale high energy buffer 7 is acquired using the stroke acquisition system 6 for being mounted on large-scale 7 lower section of high energy buffer
According to.After the completion of impact, the collected impact velocity of impact speed acquisition system, dynamical reaction are adopted using Data Analysis Services system
The collected dynamical reaction real time data of collecting system 5 and the collected stroke real time data of stroke acquisition system 6 are analyzed simultaneously
Fitting.
Before test, impact 2 distance of vehicle is arranged by 3 certain distance of impact pedestal, which contacts large size to ensure to impact vehicle 2
Impact velocity needed for the moment of high energy buffer 7 obtains test is advisable.Whether there is ramp according to track 1, impact vehicle 2 can be with
There are two types of the modes for obtaining impact velocity.When track 1 has ramp (as shown in Figure 1), drawn by tractor by vehicle 2 is impacted
To the different location in ramp, the principle of kinetic energy is converted into using potential energy, the impact vehicle 2 discharged from different location just obtains different
Impact velocity is collided to by impact pedestal 3；When track 1 does not have ramp, impact vehicle 2 is pushed to obtain test institute by power vehicle
The impact velocity needed.
Impact velocity described in the present invention refers to: when the speed that the moment that impact vehicle 2 is contacted with large-scale high energy buffer 7 obtains
Degree.The impact velocity is acquired using the impact velocity acquisition system installed on track 1.When impact vehicle 2 is in the effect of inertia
When large-scale high energy buffer 7 is impacted forward in lower continuation, it is mounted on the dynamical reaction acquisition system of the impact end of large-scale high energy buffer 7
5 acquire the dynamical reaction of the medium-and-large-sized high energy buffer 7 of impact process in real time, and send real time data to Data Analysis Services system
System；Meanwhile the stroke acquisition system 6 for being mounted on large-scale 7 lower section of high energy buffer acquires the medium-and-large-sized high energy of impact process in real time and delays
The stroke of device 7 is rushed, and sends real time data to Data Analysis Services system；Data Analysis Services system is receiving dynamical reaction
Fitting Analysis is carried out after dynamical reaction and stroke real time data that acquisition system 5 and the transmission of stroke acquisition system 6 come, obtains large-scale height
Can the performance parameters such as the maximum dynamical reaction of buffer 7, range, practical buffer capacity, S. E. A., according to the property obtained
Whether energy parameter decision large size high energy buffer 7 meets application demand.
It should be noted that dynamical reaction described in the present invention refers to that large-scale high energy buffer 7 is compressed in impact process
Generated resistance.Stroke described in the present invention refers to large-scale high energy buffer 7 compressed distance in impact process.
The present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, existing to meet large-scale high energy the buffer 7 motionless operating condition in position, the present embodiment after being collided
It is fixedly mounted on track 1 by impact pedestal 3, for large-scale high energy buffer 7 to be fixedly mounted；And it is pressed by the size of impact pedestal 3
It is adapted design according to the size of large-scale high energy buffer 7, in order to install fixed large-scale high energy buffer 7, meets large-scale high energy
The test requirements document of buffer 1:1.
Specifically, keeping stable structure after being impacted as shown in figure 3, be designed to triangular structure by impact pedestal 3.
As shown in Figures 3 and 4, the fixed installation of seat 4 is rubbed on track 1 by multiple adding pressure types by impact pedestal 3.Specifically, multiple add
Pressure type friction seat 4 is evenly distributed and is symmetrical arranged on two parallel tracks 1, in order to make to be impacted 3 uniform force of pedestal.
As shown in figure 4, the adding pressure type friction seat 4 interval setting being distributed on every track, adding pressure type rubs the number of seat 4 and spacing can be with
According to by the size of impact pedestal 3 and the setting of stress demand, 8 adding pressure types friction seats 4 are arranged in the present embodiment.
As shown in Figs. 5 to 7, adding pressure type friction seat 4 includes: anchor ear, is had respectively from 1 inner side and outer side of track by railway clamp
Two panels hoop pieces 41 firmly；For two panels hoop pieces 41 to be clamped in multiple spaced bolt assemblies 42 of 1 two sides of track；For
Make multiple spaced pressurization fixation kits 43 of 41 grip track of two panels hoop pieces, 1 top and bottom；Wherein, two neighboring spiral shell
One pressurization fixation kit 43 is set between bolt assembly 42, and the fixation kit 43 that pressurizes is vertically arranged with bolt assembly 42.It needs
Illustrate, the quantity of bolt assembly 42 and pressurization fixation kit 43 can be set according to actual needs, the bolt of the present embodiment
Component 42 is three, and pressurization fixation kit 43 is two.
Specifically, as shown in fig. 7, bolt assembly 42 includes: to sequentially pass through two to the other side from the inner or outer side of track 1
The bolt 421 of piece hoop pieces 41；The nut 422 for clamping two panels hoop pieces 41 by the two sides of track 1 for fitted bolt 421.
As shown in fig. 7, pressurization fixation kit 43 includes: the upper lining being packed in the space of two panels hoop pieces 41 and track formation
Plate 431 and lower liner plate 432；Pressurization bolt 433 penetrates in the space from the top of two panels hoop pieces 41 and passes through upper liner plate 431
After resist lower liner plate 432.Wherein, as shown in fig. 6, the top of every hoop pieces 41 is provided with semicircle gap, when two panels hoop pieces 41 exist
The through-hole passed through convenient for pressurization bolt 433 is formed after clamping under the action of bolt assembly 42.
Wherein, upper liner plate 431 is equipped with threaded hole, and the top of lower liner plate 432 is equipped with for positioning 433 bottom of pressurization bolt
Location dimples 432a.During gradually holding out against after pressurization bolt 433 is pressed into location dimples 432a, lower liner plate 432 is to track 1
Top surface apply downward extruding force, upper liner plate 431 opposite pressurization bolt 433 under the action of screw thread moves up, to two panels hoop pieces
41 apply upward pressure on top surface, to make the bottom surface of the upward track 1 in the bottom of two panels hoop pieces 41, when 433 nothing of pressurization bolt
When method continues the to be screwed into, it can be achieved that top and bottom of grip track 1.
Wherein, the homogeneous coadaptation cooperation in the face that two panels hoop pieces 41, upper liner plate 431, lower liner plate 432 and track 1 are in contact,
In order to after the top surface of track 1 and ground, inner side and outer side are clamped, increasing friction force, and then ensure to be impacted 3 quilt of pedestal
Fastening is on track 1.
When installed on track 1 using adding pressure type friction seat 4 by impact pedestal 3, quilt is connected especially by pressurization bolt 433
Impact pedestal 3.
As shown in Fig. 2, large-scale high energy buffer 7 includes: cylinder body 71 and plunger 72.Plunger 72 is after being impacted to cylinder body
Movement in 71；Wherein, cylinder body 71 is mounted on by flange 73 by impact pedestal 3, it is ensured that not by impact 71 position of rear-bank rotor housing
It is dynamic.As shown in Fig. 2, the left end of diagram plunger 72 is the impact end for receiving impact.Dynamical reaction acquisition system 5 is mounted on plunger 72
Impact end.Specifically, as shown in figure 8, dynamical reaction acquisition system 5 includes: the force snesor for acquiring dynamical reaction data in real time
51, the impact end of plunger 72 is mounted on by mounting base 52；It is arranged in the slow of 51 impact end of force snesor (left end of diagram)
Punching protection rams 53.Wherein, buffer protection, which is ramed, 53 can protect force snesor 51 from directly impacting.Further, it buffers
It protects the 53 several groups guide rod 54 by being circumferentially arranged of raming to be fixedly attached in mounting base 52, does not fix and connect with force snesor 51
It connects；Buffer protection ram 53 impacted after can be moved axially with guide rod 54 along large-scale high energy buffer 7, avoid buffer protection from hitting
First 53 impacted after it is fixed and share initial dynamical reaction, influence the accuracy that force snesor 51 acquires real-time dynamical reaction.
Wherein, buffer protection rams 53 using the production of animi resin material.
As shown in figs. 2 and 9, stroke acquisition system 6 includes: the displacement sensor 61 for acquiring run-length data in real time.This
The displacement sensor 61 of embodiment uses rod-pulling type linear displacement transducer, and one end is mounted on mounting base by holding middle device 62
Immediately below 52, the other end is fixedly mounted on the underface of the cylinder body 71 of large-scale high energy buffer 7.Wherein, displacement sensor 61
Pull rod be correspondingly arranged at the underface of plunger 72, it is mobile with plunger after plunger is impacted, in order to acquire stroke in real time
Data.
Due to cannot ensure impact vehicle 2 every time impinge upon buffer protection ram 53 center, hitting will cause to buffer partially
53 rotations of raming are protected, and then deflect the pull rod of displacement sensor 61, lead to measurement error.In order to guarantee displacement sensor 61
Pull rod be able to maintain after being impacted it is straight, it is ensured that measurement is accurate, and the present embodiment connects displacement sensing by holding middle device 62
One end of the pull rod of device 61 keeps the pull rod of displacement sensor 61 straight.
Specifically, as shown in Figures 9 and 10, holding middle device 62 includes: two supports for being symmetrically mounted on 52 lower part of mounting base
Bar 621；Its both ends is connected to the slide bar 623 between two support rods 621, the intermediate setting of slide bar 623 by sliding nut 622
Oscillating bearing 624；Wherein, one end connecting joint bearing 624 of the pull rod of displacement sensor 61.
It rams 53 adaptable impact heads as shown in Figure 1, the impact end of the impact vehicle 2 of the present embodiment has with buffer protection
21, meet the requirement of Contact -impact face.
Impact velocity acquisition system includes: installation velocity sensor (not shown) in orbit.When it is implemented,
Velocity sensor may be mounted at the underface in Contact -impact face.
Data Analysis Services system includes: data analysis and processing unit and data storage cell.
When test, impact vehicle 2 is collided with certain impact velocity to the large-scale high energy buffer 7 tested, and is gradually increased
For impact velocity to maximum impact speed, it is corresponding dynamic anti-that force snesor 51 with displacement sensor 61 acquires each impact velocity in real time
Force data and run-length data simultaneously send data analysis and processing unit to, 51 He of data analysis and processing unit real-time reception force snesor
The collected dynamical reaction data of displacement sensor 61 and run-length data simultaneously store related data in the data store；It utilizes
Software function inside data analysis and processing unit handles to obtain dynamical reaction --- time graph, stroke --- time graph, into
One step is to dynamical reaction --- time graph and stroke --- time graph is fitted analysis and obtains dynamical reaction --- stroke curve,
To obtain the performance parameters such as the maximum dynamical reaction for the large-scale high energy buffer 7 tested, range, practical buffer capacity；
It compares to obtain S. E. A. by practical buffer capacity and theoretical buffer capacity, be determined according to the performance parameter obtained big
Whether type high energy buffer 7 meets application demand.
The software of the data analysis and processing unit of the present embodiment is soft using the JM-TEST of Yangzhou Jing Ming Science and Technology Ltd.
Part.
Illustrate how the present invention tests large-scale high energy buffer below by a specific embodiment.
Large-scale 7 length of high energy buffer to be tested of the present embodiment is greater than 3m, sets according to the size of large-scale high energy buffer 7
Meter is by impact pedestal 3, in order to meet the size requirement of the large-scale test of high energy buffer 7 with practical application 1:1；And large-scale high energy
Buffer 7 is fixedly installed to by impact pedestal 3, meets the operating condition that position is motionless after being collided.
The large-scale high energy buffer 7 tested needs to meet claimed below:
One, the structure basis that maximum dynamical reaction is no more than certain fixed setting for installing the large size high energy buffer can
The maximum force of receiving.If in practical application for installing the structure base of certain fixed setting of the large size high energy buffer
The maximum force that plinth is able to bear is 650KN, it is to be ensured that the structure basis is not damaged after being impacted, then tested
The maximum dynamical reaction of large-scale high energy buffer is no more than 650KN, and (maximum dynamical reaction refers to impact vehicle with maximum impact velocity shock
When large-scale high energy buffer, large-scale high energy buffer is in impact process by the maximum resistance of compression generation).
Two, the biggest quality for the impact vehicle for needing to adapt to is 250t, and maximum impact speed is 4m/s.
Three, when quick washing, S. E. A. is greater than 80%.
The maximum impact energy of impact vehicle, Jin Erke can be calculated according to the biggest quality of impact vehicle and maximum impact speed
To converse the theoretical buffer capacity for the large-scale high energy buffer that the present embodiment to be tested.
Theoretical buffer capacity is the absorption maximum energy of theoretical upper bumper.Specific conversion method is as follows: when quality is
When the impact vehicle of 250t quickly collides structure basis with the impact velocity of maximum 4m/s, impact vehicle is rushed from contact buffer to stopping
Hit the impact energy E of generationAlways=m × v2/ 2=250000 × 42/ 2=2000KJ, if 6 bufferings are installed in structure basis
Device absorbs the impact energy that impact vehicle generates jointly, then the impact energy E that every buffer absorbsIt is single=EAlways/ 6=2000/6=
333KJ, and the absorption maximum ENERGY E of buffer is usually set to E > EIt is single× 1.3=333 × 1.3=433KJ, then single only slow
The absorption maximum energy (i.e. theoretical buffer capacity) for rushing device is 433kJ.
Preparation before test: as illustrated in fig. 1 and 2, the large-scale high energy buffer 7 by length greater than 3m passes through flange 73
Be fixedly mounted on its size be adapted by impact pedestal 3；Impact vehicle 2 is parked on the ramp of track 1 and in braking shape
State；It is debugged after connecting force snesor 51, displacement sensor 61, velocity sensor and data analysis process system, and right
Each measurement parameter (dynamical reaction, stroke, impact velocity) carries out initial alignment；Make to impact vehicle 2 with lesser impact velocity examination punching three
Secondary, whether inspection and analysis force snesor 51, displacement sensor 61, velocity sensor and data analysis process system are working properly,
Formal test can be carried out after normal after debugging.
It carries out formal test: colliding impact vehicle 2 to by impact pedestal 3 with different impact velocitys, gradually increase impact
Speed is impacted with maximum impact speed 4m/s to stopping after collision by impact pedestal 3 when impacting vehicle 2.In impact process, speed
The impact velocity of sensor acquisition impact vehicle 2, force snesor 51 acquire the real-time dynamical reaction data of large-scale high energy buffer 7, position
Displacement sensor 61 acquires the real-time run-length data of large-scale high energy buffer 7, and collected each data transmission to data is analyzed
Processing system.
After the test, each measurement parameter (dynamical reaction, stroke, impact velocity) is demarcated again, confirms each sensing
Device is to terminate test after working normally.
The present embodiment by the initial pressure set of large-scale 7 gas chamber of high energy buffer be 5MPa when, make impact vehicle 2 respectively with not
Same impact velocity collides large-scale high energy buffer 7, and table -1 lists the impact velocity difference of 2m/s, 3m/s and 4m/s
Maximum dynamical reaction, range, theoretical buffer capacity, practical buffer capacity and the energy of corresponding large size high energy buffer 7
Absorptivity.
- 1 dynamic test performance parameter statistical form of table
From table -1, it can be concluded that, with the increase of impact velocity, the maximum dynamical reaction and range of buffer are also therewith
Increase.When quickly colliding large-scale high energy buffer 7 with the impact velocity of maximum 4m/s, maximum dynamical reaction is that 623KN (is less than
650KN)；S. E. A. is that 99% (being greater than 80%) therefore can verify the large size high energy buffer 7 by experiment and meet
It is required that can be applied to reality.
By taking the impact velocity of 4m/s as an example, illustrate the preparation method of each performance parameter of table -1.Data Analysis Services system
Dynamical reaction is obtained after the dynamical reaction, the run-length data that correspond to 4m/s impact velocity are carried out analysis fitting --- stroke curve, such as
Shown in Figure 11.As can be drawn from Figure 11, maximum dynamical reaction is 623KN, range 961mm, practical buffer capacity are
429KJ.Wherein, the i.e. practical buffer capacity of the area that dynamical reaction --- stroke curve surrounds；S. E. A.=reality buffering is held
Amount/theory buffer capacity.
Although above-mentioned elaborate the present invention, however, the present invention is not limited thereto, those skilled in the art can
It is modified with principle according to the present invention, therefore, the various modifications that all principles according to the invention carry out all should be understood as
Fall into protection scope of the present invention.
Claims (10)
1. a kind of test method of large size high energy buffer, comprising: setting can be along the impact vehicle of its free movement in orbit；Its
It is characterized in that, further includes:
It is fixedly mounted by impact pedestal, and the large-scale high energy buffer is fixedly mounted on described by impact pedestal in orbit
On；
It collides impact vehicle to by impact pedestal with different impact velocitys, gradually increases impact velocity, when impact vehicle is with maximum
Impact velocity is impacted to stopping after being collided by impact pedestal；Wherein,
In impact process, impact vehicle and the large-scale high energy are acquired using impact velocity acquisition system in orbit is installed
The impact velocity of buffer Contact；Utilize the dynamical reaction acquisition system for the impact end for being mounted on the large-scale high energy buffer
To acquire the real-time dynamical reaction data of the large-scale high energy buffer；Utilize the row being mounted below the large-scale high energy buffer
Journey acquisition system acquires the real-time run-length data of the large-scale high energy buffer.
2. the test method of large size high energy buffer according to claim 1, which is characterized in that further include utilizing data
Analysis process system is collected in real time dynamic anti-to the collected impact velocity of impact speed acquisition system, dynamical reaction acquisition system
Collected run-length data is analyzed and is fitted in real time for force data and stroke acquisition system.
3. the test method of large size high energy buffer according to claim 2, which is characterized in that the fixation in orbit
Installation includes: that will be fixedly mounted in orbit by impact pedestal using multiple adding pressure types friction seat by impact pedestal；Wherein,
Adding pressure type friction seat includes:
Anchor ear has the two panels hoop pieces for respectively clamping the track from the track inner side and outer side；
For the two panels hoop pieces to be clamped in multiple spaced bolt assemblies of the track two sides；
For making the two panels hoop pieces clamp multiple spaced pressurization fixation kits of the rail top face and bottom surface；
Wherein, a pressurization fixation kit, and the pressurization fixation kit and the spiral shell are set between two neighboring bolt assembly
Bolt assembly is vertically arranged.
4. the test method of large size high energy buffer according to claim 3, which is characterized in that the pressurization fixation kit
Include:
The upper liner plate and lower liner plate being packed in the space of the two panels hoop pieces and track formation；
Pressurization bolt, penetrated at the top of the two panels hoop pieces in the space and pass through resist after the upper liner plate it is described under
Liner plate.
5. the test method of large size high energy buffer according to claim 4, which is characterized in that the pressurization bolt and institute
State liner plate threaded connection；The top of the lower liner plate is equipped with the location dimples for positioning the pressurization bolt bottom.
6. the test method of large size high energy buffer according to claim 5, which is characterized in that dynamical reaction acquisition system
System includes:
For acquiring the force snesor of dynamical reaction data in real time, rushing for the large-scale high energy buffer is mounted on by mounting base
Hit end；
The buffer protection that the force snesor impact end is arranged in is ramed；
Wherein, the buffer protection is ramed is mounted in the mounting base by the several groups guide rod being circumferentially arranged, the buffering
Protection is ramed impacted after can be moved axially with guide rod along the large-scale high energy buffer.
7. the test method of large size high energy buffer according to claim 6, which is characterized in that the buffer protection is ramed
It is made of animi resin material.
8. the test method of large size high energy buffer according to claim 6, which is characterized in that the stroke acquisition system
Include:
For acquiring the displacement sensor of run-length data in real time, under one end is mounted on the mounting base just by holding middle device
Side, the other end are fixedly mounted on the underface of the cylinder body of the large-scale high energy buffer.
9. the test method of large size high energy buffer according to claim 8, which is characterized in that described to hold middle device packet
It includes:
It is symmetrically mounted on two support rods of the mounting base lower part；
Its both ends is connected to the slide bar between two support rods by sliding nut, and oscillating bearing is arranged among it；
Wherein, one end of institute's displacement sensors connects the oscillating bearing.
10. the test method of large size high energy buffer according to claim 9, which is characterized in that the impact vehicle rushes
It hits end and has and ram adaptable impact head with the buffer protection.
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Cited By (1)
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|---|---|---|---|---|
| CN113030428A (en) * | 2021-03-11 | 2021-06-25 | 中国人民解放军63921部队 | Device and system for measuring energy release capacity of energetic material |
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