CN208537320U - A kind of drop impact experimental provision and anti-secondary pulse mechanism - Google Patents
A kind of drop impact experimental provision and anti-secondary pulse mechanism Download PDFInfo
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- CN208537320U CN208537320U CN201821279454.7U CN201821279454U CN208537320U CN 208537320 U CN208537320 U CN 208537320U CN 201821279454 U CN201821279454 U CN 201821279454U CN 208537320 U CN208537320 U CN 208537320U
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Abstract
The utility model relates to a kind of drop impact experimental provision and anti-secondary pulse mechanisms, and wherein appliance stand includes crossbeam, the mounting platform positioned at middle part positioned at upper end；Fixture mounting plate is fixed on mounting platform；Fixture for clamping sample is mounted on the fixture mounting plate；The guidance system and jacking system include wirerope, upper guide beam, electromagnet, lower guide beam and weight；Lower guide beam bottom end is connected with weight；Electromagnet is mounted on the lower surface of guide beam, guide beam under electromagnetic actuation when energization, and electromagnet is separated with lower guide beam when power-off；Upper guide beam and lower guide beam can move up and down under the guiding role of wirerope.The utility model can meet the test of various parts, easy to operate, structure is simple, and manufacturing cost is low and weight can be made accurately to impact by being fixed on appliance stand and the flexible fixture dismantled.
Description
Technical field
The utility model relates to impact experiment apparatus more particularly to a kind of drop impact experimental provisions and anti-secondary pulse machine
Structure.
Background technique
It is a kind of very common analysis side using impact test in terms of investigation of materials and the performance test of components
Method needs to carry out impact calibration experiment there are many components especially in the production and application of automobile dummy, judges zero with this
Whether the performance indicator of component is qualified.Currently, mostly using Charpy impact entirety dummy or part to assemble in dummy calibration test
Body, the experiment for carrying out vertical direction impact to single components are less.
Now also there is Technical comparing maturation shock machine in the market.One of shock machine is falling ball impact test
Device, the apparatus structure is simple, by freely discharging spherical weight from certain altitude, directly impacts unit under test.Due to this
Weight freedom in kind falling ball impact test device is larger, without guide frame, is unfavorable for accurately impacting.Another kind impact examination
The machine of testing is relatively conventional shock machine, mostly uses door type structure, is oriented to using guide post.This shock machine
Fuselage is heavy, relatively high to processing and tooling requirement, and cost is relatively high, and the impact experiment for small components is not economical suitable enough
With.
During impact test, preventing secondary pulse is also to be frequently necessary to consider the problems of, in existing impact test
In, the method for preventing secondary pulse mainly passes through artificially prevention and anti-secondary pulse mechanism.Currently, anti-secondary pulse mechanism master
Take the anti-secondary pulse mechanism of baffle type structure and the anti-secondary pulse mechanism of gripping-type structure.Anti- the two of baffle type structure
Secondary Shocks mechanism is generally adopted by cylinder or Hydraulic Cylinder, rebounds after weight completes the first Secondary Shocks, by optoelectronic switch
Signal is acquired, cylinder or hydraulic cylinder movement is controlled, releases baffler, weight is isolated with measured piece, reaches anti-secondary pulse
Effect.The anti-secondary pulse mechanism of gripping-type structure is that signal is provided by optoelectronic switch to control grasping mechanism fixed point and catch weight
Hammer, achievees the purpose that anti-secondary pulse.The anti-secondary pulse mechanism of baffle type structure is more complicated, higher cost；Gripping-type
Anti- secondary pulse mechanism is also more complicated and more demanding to action sensitivity, and crawl point must be accurate.
Utility model content
The purpose of this utility model is in view of the above problems and the deficiencies in the prior art, to provide a kind of drop impact experiment dress
It sets and anti-secondary pulse mechanism, the drop impact experimental provision is suitable for the impact test of large, medium and small various components, especially
The components of a variety of automobile dummies are demarcated and performance study has very important meaning；
Anti- secondary pulse mechanism matched with a kind of drop impact experimental provision of the utility model can effectively prevent weight
It hammers the secondary pulse to measured piece into shape, data is avoided to interfere.
The purpose of this utility model is achieved through the following technical solutions:
The utility model provides a kind of drop impact experimental provision comprising:
Appliance stand, guidance system and jacking system and fixture；
Described device bracket includes crossbeam, the mounting platform positioned at middle part positioned at upper end；Fixture mounting plate is fixed on peace
On assembling platform；Fixture for clamping sample is mounted on the fixture mounting plate；
The guidance system and jacking system include wirerope, upper guide beam, electromagnet, lower guide beam and weight；
The bottom end of lower guide beam is connected with weight；Electromagnet is mounted on the lower surface of guide beam, and electromagnet is inhaled when energization
Close lower guide beam, electromagnet is separated with lower guide beam when power-off；Upper guide beam and lower guide beam can be in the guiding roles of wirerope
Under move up and down.
It is highly preferred that the drop impact experimental provision further include: anti-secondary pulse mechanism；
The anti-secondary pulse mechanism include push-and-pull electromagnet, optoelectronic switch, extension spring, hinge, support frame, shaft,
Energy-absorbing pad, bolt and rope；
The push-and-pull electromagnet and the optoelectronic switch are mounted on the high trestle of the mounting platform side；The hinge
It is two, is symmetrically mounted in the high trestle two sides；Support frame as described above two, each support frame passes through shaft and hinge phase respectively
Even；Bolt can move up and down in hinge, be lain on the push-pull rod of the push-and-pull electromagnet by rope；The extension spring
Both ends be separately fixed at support frame as described above upper end and far from the high trestle；The energy-absorbing pad is fixed on the upper of support frame as described above
Face；
After the optoelectronic switch senses tension weight churning sample and rebounds, triggering push-and-pull electromagnet, which is powered, to be attracted, band
Running rope rope extracts bolt from hinge, and two support frames close up under extension spring effect to centre, and the weight to have rebounded is again
It is fallen in when secondary whereabouts on fixed energy-absorbing pad on the support frame.
The utility model also provides a kind of a kind of and above-mentioned matching used anti-secondary pulse of drop impact experimental provision
Mechanism, the anti-secondary pulse mechanism include:
Push and pull electromagnet, optoelectronic switch, extension spring, hinge, support frame, shaft, energy-absorbing pad, bolt and rope；
The push-and-pull electromagnet and the optoelectronic switch are mounted on the high trestle of the mounting platform side；The hinge
It is two, is symmetrically mounted in the high trestle two sides；Support frame as described above is two, and each support frame passes through shaft and hinge phase respectively
Even；Bolt can move up and down in hinge, be lain on the push-pull rod of the push-and-pull electromagnet by rope；The extension spring
Both ends be separately fixed at support frame as described above upper end and far from the high trestle；The energy-absorbing pad is fixed on the upper of support frame as described above
Face；
After the optoelectronic switch senses tension weight churning sample and rebounds, triggering push-and-pull electromagnet, which is powered, to be attracted, band
Running rope rope extracts bolt from hinge, and two support frames close up under extension spring effect to centre, and the weight to have rebounded is again
It is fallen in when secondary whereabouts on fixed energy-absorbing pad on the support frame.
The utility model has the advantages that it can be seen from above-mentioned the technical solution of the utility model
1, it is single can to meet a variety of automobile dummies by being fixed on appliance stand and the flexible fixture dismantled for the utility model
A part or assembly are tested for the property, and only need to change fixture to different parts, easy to operate.
2, weight can be made accurately to impact by guidance system and jacking system in the utility model.
3, the utility model has the advantages of simple structure, space occupied is small and manufacturing cost is low, is suitable for large, medium and small various zero
The impact experiment of component.
4, the anti-secondary pulse mechanism in the utility model, has the advantages of simple structure and easy realization, can effectively avoid secondary pulse pair
Testing bring influences.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the drop impact experimental provision of the utility model；
Fig. 2 is the structural schematic diagram of the anti-secondary pulse mechanism in the utility model.
In attached drawing:
Appliance stand 1, guidance system and jacking system 2, anti-secondary pulse mechanism 3, fixture 4, sample 5；Fixed bottom
Plate 1-1, short bracket 1-2, high trestle 1-3, connection support 1-4, connecting plate 1-5, crossbeam 1-6, mounting platform 1-7, fixture mounting plate
1-8；Hoist engine 2-1, wire support 2-2, pulley 2-3, wirerope 2-4, upper guide beam 2-5, electromagnet 2-6, lower guide beam 2-
7, weight 2-8；It pushes and pulls electromagnet 3-1, optoelectronic switch 3-2, extension spring 3-3, hinge 3-4, support frame 3-5, shaft 3-6, inhale
3-7, bolt 3-8, rope 3-9 can be padded.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to be more clear the purpose of this utility model, technical solution and advantage
The utility model is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention,
It is not intended to limit the present invention.
The utility model provides a kind of drop impact experimental provision, and structure is as shown in Figure 1, comprising:
Appliance stand 1, guidance system and jacking system 2, anti-secondary pulse mechanism 3, fixture 4, sample 5.
Appliance stand 1 is the skeleton of whole device, is mainly formed by connecting using welding manner, is used to support and fixes it
Its each system or component.The appliance stand 1 includes bottom plate 1-1, short bracket 1-2, high trestle 1-3, is connected to short bracket 1-2 and height
Connection support 1-4 and connecting plate 1-5 between bracket 1-3, positioned at upper end and be fixed on high trestle 1-3 crossbeam 1-6, be located at
Portion and the mounting platform 1-7 being connect with short bracket 1-2 and high trestle 1-3.Fixture mounting plate 1-8 is fixed on mounting platform 1-7's
In fixing seat.Fixture 4 is mounted on the fixture mounting plate 1-8 of appliance stand 1 by connector.Sample 5 is by 4 institute of fixture
Clamping.
Guidance system and jacking system 2 are to share set of system comprising hoist engine 2-1, wire support 2-2, pulley 2-
3, wirerope 2-4, upper guide beam 2-5, electromagnet 2-6, lower guide beam 2-7, weight 2-8.
Entire guidance system and jacking system 2 are mainly connected all parts by wirerope 2-4.Hoist engine 2-1
It is fixed on bottom plate 1-1；One end of wirerope 2-4 is exported from hoist engine 2-1, across the wire guide of wire support 2-2, is passed through
Positioned at appliance stand 1 connection support 1-4 on fixation pulley 2-3, by be located at crossbeam 1-6 on two fixed pulley 2-3 and
The movable pulley 2-3 coiling being connected with upper guide beam 2-5, after passing twice through guide beam 2-5 and lower guide beam 2-7, steel wire
The rope end 2-4 is fixed on the fixture mounting plate 1-8 of appliance stand 1.The both ends of upper guide beam 2-5 and lower guide beam 2-7 are equal
Equipped with linear bearing, can smoothly be moved up and down under the guiding role of wirerope 2-4.Electromagnet 2-6 is mounted on guiding
The lower surface of beam 2-5, electromagnet 2-6 is attracted lower guide beam 2-7 when energization；Electromagnet 2-6 loses magnetism when power-off, electromagnet
2-6 is separated with lower guide beam 2-7, and lower guide beam 2-7 falls vertically under the guiding role of wirerope 2-4.Lower guide beam 2-7's
Bottom end is connected with weight 2-8；As lower guide beam 2-7 falls, weight 2-8 falling impacts are fixed on the sample on fixture 4
5。
The structure of above-mentioned anti-secondary pulse mechanism 3 is as shown in fig. 2, it can be seen that the anti-secondary pulse mechanism 3 includes push-and-pull
Electromagnet 3-1, optoelectronic switch 3-2, extension spring 3-3, hinge 3-4, support frame 3-5, shaft 3-6, energy-absorbing pad 3-7, bolt 3-
8, rope 3-9.
Push-and-pull electromagnet 3-1, optoelectronic switch 3-2 therein are mounted on the high trestle 1-3 of appliance stand 1；Hinge 3-4
It is two, is installed in the two sides of the high trestle 1-3 of appliance stand 1；Support frame 3-5 is two, is arranged symmetrically in appliance stand
1 two sides high trestle 1-3；Each support frame 3-5 passes through shaft 3-6 respectively and is connected with hinge 3-4, and hinge 3-4 is provided with bearing,
Bolt 3-8 in hinge 3-4 is lain in by rope 3-9 on the push-pull rod of push-and-pull electromagnet 3-1, when experiment, by two bolt 3-8
It is respectively inserted in the pin hole of hinge 3-4.It is two that energy-absorbing, which pads 3-7, is separately fixed at the upper surface of the both ends of support frame 3-5.
The both ends of extension spring 3-3 are separately fixed at the upper end support frame 3-5, and far from high trestle 1-3.
The working principle of the utility model passes through the impact of Q dummy breast, clavicle impact and the chest and lock to sample 5
Bone combination carries out impact experiment respectively to be illustrated, and is embodied combined with Figure 1 and Figure 2, as follows:
One, impact experiment is carried out to Q dummy breast
Step S11, installs fixture 4 and sample 5.
Q dummy breast and its corresponding fixture 4 of clavicle are rushed according to the fixture mounting plate 1-8 upper breast on appliance stand 1
It hits corresponding hole location installation to fix, is then fixed Q dummy breast using fixture 4.
Step S12 sets weight height H.
Electromagnet 2-6 is powered, is attracted it with lower guide beam 2-7, starts hoist engine 2-1, weight 2-8 is adjusted to reality
Test specified altitude assignment H.
Step S13 adjusts anti-secondary pulse mechanism to movement initial position.
Two support frame 3-5 of anti-secondary pulse mechanism 3 are separated, extension spring 3-3 is in tensional state, and two are inserted
Pin 3-8 is inserted into respectively in the pin hole of hinge 3-4, prevents support frame 3-4 from closing up to centre.
Step S14 impacts Q dummy breast, acquires data.
Log-on data acquisition software, trigger switch power off electromagnet 2-6.At this point, lower guide beam 2-7 and electromagnet 2-
6 separation, weight 2-8 fall vertically under the guiding role of wirerope 2-4, impact Q dummy breast, generate it to bottom offset.
During this, the acceleration transducer record being pasted on weight 2-8 impacts acceleration change when Q dummy breast, is mounted on
Change in displacement in the Self-resetting displacement sensor record Q dummy breast impact process of the mounting plate side of appliance stand 1.
In weight 2-8 dropping process, optoelectronic switch 3-2 record is primary；To upper after weight 2-8 impacts sample 5
During rebound, second of optoelectronic switch 3-2 record, the electromagnet 3-1 of triggering push-and-pull at this time, which is powered, to be attracted, and drives rope 3-9
Two bolt 3-8 in hinge 3-4 are extracted, two support frame 3-5 close up under extension spring 3-3 effect to centre, rebound
The weight 2-8 risen is fallen in when falling again on the energy-absorbing pad 3-7 being fixed on support frame 3-5, and energy-absorbing pad 3-7 can prevent quilt
Sample 5 is by secondary pulse.
Step S15, by requirement of experiment, many experiments handle data, are released weight height H and dominant bit
It moves, the relationship of impact acceleration, whether analysis and research Q dummy breast material and structural behaviour are up to standard.
Two, impact experiment is carried out to Q dummy's clavicle
Step S21, installs fixture and sample.
By the corresponding fixture 4 of the Q dummy breast and its clavicle of sample according to the fixture mounting plate 1- on appliance stand 1
Clavicle impacts corresponding hole location installation and fixes on 8.Then Q dummy's clavicle is fixed using fixture 4.
Other steps are identical as Q dummy breast impact experiment step, and details are not described herein again.
Wherein, the utility model can to Q dummy's clavicle repeat impact or adjustment different height, by more raw datas come
The impact resistance of Q dummy's clavicle is studied, this is also an important indicator as car crash dummy.
Three, impact experiment is carried out to Q dummy breast and clavicle combiner
Step S31, installs fixture and sample.
By the corresponding fixture 4 of the Q dummy breast and its clavicle of sample according to the fixture mounting plate 1- on appliance stand 1
8 upper breasts, which impact corresponding hole location installation, to be fixed.Then Q dummy breast and clavicle are assembled, is fixed on fixture 4.
Other steps are identical as Q dummy breast impact experiment step, and details are not described herein again.
From the above, it can be seen that the utility model can utilize the same experimental provision, to Q dummy's chest of sample
Portion, clavicle and combinations thereof part carry out impact experiment, to study sample performance, more conveniently to prejudge Q dummy's finished product
Whether qualification provides more reliable reference frame, also provides reference direction for our R&D and production.
The utility model only needs to change corresponding fixture 4, according to fixture when carrying out impact experiment to different samples 5
4 and sample 5 the anti-secondary pulse mechanism 3 of height adjustment position, the impact test of other samples can be completed, and
It effectively prevent secondary pulse.When the utility model, which is in, to leave unused, anti-secondary pulse mechanism 3 can also be used as bearing platform and place weight
Hammer 2-8 into shape.
To sum up, the utility model structure is simple, and manufacturing cost is low compared with existing shock table, more meet
The demand of automobile dummy calibration experiment.Provided anti-secondary pulse mechanism structure is simpler, can accurately and effectively prevent quilt
Part is surveyed by secondary pulse, when device leaves unused, which plays load-bearing effect, can prevent length of steel rope time stress and become
Shape.
Although the utility model has been described by way of example and in terms of the preferred embodiments, embodiment does not limit the utility model.Not
It is detached from the spirit and scope of the utility model, any equivalent change or retouch done also belongs to the guarantor of the utility model
Protect range.Therefore the protection scope of the utility model should be based on the content defined in the claims of this application.
Claims (3)
1. a kind of drop impact experimental provision, which is characterized in that the drop impact experimental provision includes:
Appliance stand (1), guidance system and jacking system (2) and fixture (4)；
Described device bracket (1) includes crossbeam (1-6), the mounting platform (1-7) positioned at middle part positioned at upper end；Fixture mounting plate
(1-8) is fixed on mounting platform (1-7)；Fixture (4) for clamping sample (5) is mounted on the fixture mounting plate
On (1-8)；
The guidance system and jacking system (2) include wirerope (2-4), upper guide beam (2-5), electromagnet (2-6), lower guiding
Beam (2-7) and weight (2-8)；
The bottom end of lower guide beam (2-7) is connected with weight (2-8)；Electromagnet (2-6) is mounted on the following table of guide beam (2-5)
Face, electromagnet (2-6) is attracted lower guide beam (2-7) when energization, and electromagnet (2-6) is separated with lower guide beam (2-7) when power-off；On
Guide beam (2-5) and lower guide beam (2-7) can move up and down under the guiding role of wirerope (2-4).
2. a kind of drop impact experimental provision according to claim 1, which is characterized in that the drop impact tests dress
It sets further include:
Anti- secondary pulse mechanism (3)；
The anti-secondary pulse mechanism (3) includes push-and-pull electromagnet (3-1), optoelectronic switch (3-2), extension spring (3-3), hinge
(3-4), support frame (3-5), shaft (3-6), energy-absorbing pad (3-7), bolt (3-8) and rope (3-9)；
Push-and-pull electromagnet (3-1) and the optoelectronic switch (3-2) are mounted on the high trestle of the side the mounting platform (1-7)
On (1-3)；The hinge (3-4) is two, is symmetrically mounted in the two sides the high trestle (1-3)；Support frame as described above (3-5) two,
Each support frame (3-5) is connected by shaft (3-6) with hinge (3-4) respectively；Bolt (3-8) can be up and down in hinge (3-4)
It is mobile, it is lain in by rope (3-9) on the push-pull rod of push-and-pull electromagnet (3-1)；The two of the extension spring (3-3)
End is separately fixed at the support frame as described above upper end (3-5) and far from the high trestle (1-3)；The energy-absorbing pad (3-7) is fixed on institute
State the upper surface of support frame (3-5)；
After the optoelectronic switch (3-2) senses weight (2-8) impact sample (5) and rebounds, triggering push-and-pull electromagnet (3-
1) it is powered and is attracted, rope (3-9) is driven to extract bolt (3-8) from hinge (3-4), two support frames (3-5) are stretching bullet
Close up under spring (3-3) effect to centre, the weight (2-8) to have rebounded falls in when falling again and is fixed on support frame (3-5)
On energy-absorbing pad (3-7).
3. a kind of a kind of and claim 1 matching used anti-secondary pulse mechanism of drop impact experimental provision, special
Sign is that the anti-secondary pulse mechanism includes:
Push and pull electromagnet (3-1), optoelectronic switch (3-2), extension spring (3-3), hinge (3-4), support frame (3-5), shaft (3-
6), energy-absorbing pad (3-7), bolt (3-8) and rope (3-9)；
Push-and-pull electromagnet (3-1) and the optoelectronic switch (3-2) are mounted on the high trestle of the side the mounting platform (1-7)
On (1-3)；The hinge (3-4) is two, is symmetrically mounted in the two sides the high trestle (1-3)；Support frame as described above (3-5) is two
A, each support frame (3-5) is connected by shaft (3-6) with hinge (3-4) respectively；Bolt (3-8) is in hinge (3-4) on energy
Lower movement is lain in by rope (3-9) on the push-pull rod of push-and-pull electromagnet (3-1)；The two of the extension spring (3-3)
End is separately fixed at the support frame as described above upper end (3-5) and far from the high trestle (1-3)；The energy-absorbing pad (3-7) is fixed on institute
State the upper surface of support frame (3-5)；
After the optoelectronic switch (3-2) senses weight (2-8) impact sample (5) and rebounds, triggering push-and-pull electromagnet (3-
1) it is powered and is attracted, rope (3-9) is driven to extract bolt (3-8) from hinge (3-4), two support frames (3-5) are stretching bullet
Close up under spring (3-3) effect to centre, the weight (2-8) to have rebounded falls in when falling again and is fixed on support frame (3-5)
On energy-absorbing pad (3-7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821279454.7U CN208537320U (en) | 2018-08-09 | 2018-08-09 | A kind of drop impact experimental provision and anti-secondary pulse mechanism |
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|---|---|---|---|
| CN201821279454.7U CN208537320U (en) | 2018-08-09 | 2018-08-09 | A kind of drop impact experimental provision and anti-secondary pulse mechanism |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186783A (en) * | 2019-05-01 | 2019-08-30 | 郑州大学 | Compression shear of dropping hammer impact test apparatus |
| CN112683698A (en) * | 2020-12-21 | 2021-04-20 | 西安交通大学 | Tensile impact test stand with medium strain rate for material |
| CN112857727A (en) * | 2021-02-09 | 2021-05-28 | 中冶建筑研究总院有限公司 | Building engineering optical cable impact testing device and testing method thereof |
| CN116952705A (en) * | 2023-09-19 | 2023-10-27 | 中铁十七局集团第五工程有限公司 | Structural bionic basalt fiber reinforced composite material impact resistance detection device |
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2018
- 2018-08-09 CN CN201821279454.7U patent/CN208537320U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186783A (en) * | 2019-05-01 | 2019-08-30 | 郑州大学 | Compression shear of dropping hammer impact test apparatus |
| CN112683698A (en) * | 2020-12-21 | 2021-04-20 | 西安交通大学 | Tensile impact test stand with medium strain rate for material |
| CN112857727A (en) * | 2021-02-09 | 2021-05-28 | 中冶建筑研究总院有限公司 | Building engineering optical cable impact testing device and testing method thereof |
| CN112857727B (en) * | 2021-02-09 | 2022-08-30 | 中冶建筑研究总院有限公司 | Building engineering optical cable impact testing device and testing method thereof |
| CN116952705A (en) * | 2023-09-19 | 2023-10-27 | 中铁十七局集团第五工程有限公司 | Structural bionic basalt fiber reinforced composite material impact resistance detection device |
| CN116952705B (en) * | 2023-09-19 | 2024-02-20 | 中铁十七局集团第五工程有限公司 | Structural bionic basalt fiber reinforced composite material impact resistance detection device |
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