CN206530634U - A kind of energy-absorbing buffer device - Google Patents
A kind of energy-absorbing buffer device Download PDFInfo
- Publication number
- CN206530634U CN206530634U CN201621470421.1U CN201621470421U CN206530634U CN 206530634 U CN206530634 U CN 206530634U CN 201621470421 U CN201621470421 U CN 201621470421U CN 206530634 U CN206530634 U CN 206530634U
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- Prior art keywords
- energy
- cushion dashpot
- absorbing
- absorbing bar
- moving spring
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of energy-absorbing buffer device, including elastic buffer cushion block, energy-absorbing bar, cushion dashpot, flexible gaskets, slide rail and back-moving spring.Cushion dashpot is placed on bearing；The energy-absorbing bar base of energy-absorbing bar one end is located in the cylinder body of cushion dashpot, and the slide rail of the energy-absorbing bar base circumferential surface is inlaid in respectively in the chute of cushion dashpot inner surface；The other end of the energy-absorbing bar passes through the through hole of cushion dashpot one end end face, and pressure bearing head is located at outside the cylinder body of the cushion dashpot.The flexible packing ring between energy-absorbing bar base and cushion dashpot inner face.5~13 back-moving springs are located in the cylinder body of cushion dashpot, and one end of each back-moving spring is fixed on the outer face of energy-absorbing bar base of energy-absorbing bar, the other end of each back-moving spring is fixed on the inwall of the cushion dashpot other end.The utility model no more than spring range and in the case of not damaging buffer gasket, is quantifying the absorbent maximum kinetic energy of the utility model institute, so as to provide reference for the specific implementation of Hopkinson pressure bar experiment.
Description
Technical field
Field, specifically a kind of energy absorption device for Hopkinson pressure bar experiment are tested the present invention relates to ballistics.
Background technology
Split hopkinson press bar (Split Hopkinson pressure bar, SHPB) is widely used in hard crisp
Property material dynamic characteristics research, its agent structure include emitter, bullet, incident bar, transmission bar, energy absorption device with
And strain, the fast tester of bullet etc..Existing Hopkinson pressure bar energy absorption device, is by air damper and cushion pad mostly
Block buffers the shock of transmission bar and absorbs impact kinetic energy, such as No. Three Engineering Corps Research Institute of PLA General Staff Shen
Major diameter split hopkinson press bar patent (No.200620031882.9) please and the Hope of Harbin Engineering University's application
The gloomy depression bar adjustable air damper patent (No.201310150651.4) of gold.But existing 2 points of correlation technique generally existing is not enough：
1) after Hopkinson pressure bar experiment terminates each time, it is required for making energy-absorbing bar reset manually before start to test next time, this meeting
Cause certain work efficiency drop；2) the absorbent maximum impact kinetic energy of institute is not carried out when energy absorption device is designed
Necessary to quantify, this can make experimenter can not reasonably estimate the upper limit, so as to increase the danger coefficient of experiment.
The content of the invention
In order to overcome present in existing Hopkinson pressure bar energy absorption device, energy-absorbing bar needs hand-reset after each experiment, with
And kinetic energy progress quantification problem can not be can absorb to the maximum of device, the present invention proposes a kind of energy-absorbing buffer device.
The present invention includes elastic buffer cushion block, energy-absorbing bar, cushion dashpot, flexible gaskets, slide rail and back-moving spring.The buffering
Cylinder is placed on bearing；The energy-absorbing bar base of energy-absorbing bar one end is located in the cylinder body of the cushion dashpot, and makes the energy-absorbing bar bottom
The slide rail of seat circumferential surface is inlaid in the chute of cushion dashpot inner surface respectively；The other end of the energy-absorbing bar passes through the cushion dashpot
The through hole of one end end face, and pressure bearing head is located at outside the cylinder body of the cushion dashpot.In the energy-absorbing bar base and cushion dashpot inner face
Between flexible packing ring.5~13 back-moving springs are located in the cylinder body of the cushion dashpot, and fix one end of each back-moving spring
On the outer face of the energy-absorbing bar base of the energy-absorbing bar, the other end of each back-moving spring is set to be fixed on the cushion dashpot other end
Inwall on.
In each back-moving spring, the axis of a back-moving spring is overlapped with the straight line of the cushion dashpot, remaining reset
Spring is distributed on the surrounding of the back-moving spring positioned at cushion dashpot center.
The cushion dashpot is the cylindrical member of closing, is provided with what is coordinated with energy-absorbing bar gap on the end cap of the cushion dashpot one end
Through hole.8~16 chutes are evenly equipped with the inner circumferential surface of the cushion dashpot, and make the position and the energy-absorbing bar bottom of each chute
The position correspondence of slide rail on the circumference of seat.
One end of the energy-absorbing bar is pressure bearing head, and the other end is energy-absorbing bar base；Have in the end face axial of the pressure bearing head
Circular groove, for being embedded in elastic buffer cushion block；8~16 are evenly equipped with the circumference of the energy-absorbing bar base of the energy-absorbing bar other end
The individual strip slide rail parallel to the energy-absorbing bar center line.The slide rail protrudes the circumferential surface of energy-absorbing bar base；The slide rail
Cross section is arc-shaped.
In each back-moving spring, the axis of a back-moving spring is overlapped with the straight line of the cushion dashpot, remaining each reset
Spring is distributed on the surrounding of the back-moving spring positioned at cushion dashpot center.
The quantization method of maximum absorbable kinetic energy of the invention is by theoretical calculation and combines computer simulation realization
, need physical quantity taken into consideration to include：1) the total quality M and bulk velocity V of energy-absorbing bar；2) coefficient of elasticity of back-moving spring
K, quantity N, length L and maximum compressible ratio P1；3) elastic modulus E of annular resilient buffer gasket, width H and maximum
Compressible ratio P2.Acquired has the technical effect that, no more than spring range (i.e. compression distance be no more than L × P1) while not
Damaging buffer gasket, (i.e. compression distance is no more than H × P2) in the case of, quantify the absorbent maximum kinetic energy of present invention institute, so that
Reference is provided for the specific implementation of Hopkinson pressure bar experiment.
Brief description of the drawings
Fig. 1 is the front view of the present invention；
Fig. 2 is the left view of elastic cushion pad, pressure bearing head and cushion dashpot mating part in Fig. 1；
Fig. 3 is the A-A direction views in Fig. 1；
Fig. 4 is the structural representation of energy-absorbing bar, and wherein 4a is front view, and 4b is left view；
Fig. 5 is the structural representation of cushion dashpot, and wherein 5a is front view, and 5b is the B-B direction view in 5a.
In figure：
1. elastic buffer cushion block；2. pressure bearing head；3. energy-absorbing bar；4. cushion dashpot；5. flexible gaskets；6. energy-absorbing bar base；7.
Slide rail；8. back-moving spring；9. bearing；10. chute；11. steam vent.
Embodiment
The purpose of the present embodiment be provide one kind can automatically reset Hopkinson pressure bar energy-absorbing buffer device, with solve
The problem of Hopkinson pressure bar device of the prior art needs manually to reset energy-absorbing bar, and to the absorbable kinetic energy of maximum
Quantified, so as to improve conventional efficient, and reference is provided for experimental design.
The Hopkinson pressure bar energy absorption device includes elastic buffer cushion block 1, pressure bearing head 2, energy-absorbing bar 3, cushion dashpot 4, ring
Flexible gaskets 5, energy-absorbing bar base 6, slide rail 7, back-moving spring 8 and the bearing 9 of shape.
The cushion dashpot 4 is placed on bearing 9；One end of the energy-absorbing bar 3 is pressure bearing head 2, and the other end is energy-absorbing bar
Base 6, wherein, the energy-absorbing bar base of the energy-absorbing bar one end is located in the cylinder body of the cushion dashpot, and justifies the energy-absorbing bar base
The slide rail of perimeter surface is inlaid in the chute 10 of the inner surface of cushion dashpot 4 respectively；The other end of the energy-absorbing bar 3 passes through the cushion dashpot
The through hole of one end end face, makes the pressure bearing head 2 of the energy-absorbing bar be located at outside the cylinder body of the cushion dashpot.In the energy-absorbing bar base 6 with delaying
Rush flexible packing ring 5 between cylinder inner face.5~13 back-moving springs 8 are located in the cylinder body of the cushion dashpot, and make each reset bullet
One end of spring is fixed on the outer face of energy-absorbing bar base of the energy-absorbing bar, make each back-moving spring the other end be fixed on it is described
On the inwall of the cushion dashpot other end.In each back-moving spring, the straight line weight of the axis of a back-moving spring and the cushion dashpot
Close, remaining back-moving spring is distributed on the surrounding of the back-moving spring positioned at cushion dashpot center.In the present embodiment, back-moving spring 8
Quantity is 5.
The cushion dashpot is the cylindrical member of closing, is provided with and coordinates with the gap of energy-absorbing bar 3 on the end cap of the cushion dashpot one end
Through hole.8~16 chutes 10 are evenly equipped with the inner circumferential surface of the cushion dashpot, and make the position of each chute and the energy-absorbing bar
The position correspondence of slide rail 7 on the circumference of base.There are some steam vents 11 in the cushion dashpot circumferential surface.
The energy-absorbing bar 3 is revolving body.Energy-absorbing bar one end end face axial has the groove of circle, for being embedded in elastic buffer
Cushion block 1.8~16 are evenly equipped with the circumference of the energy-absorbing bar base of the energy-absorbing bar other end parallel to the energy-absorbing bar center line
Strip slide rail 7.The slide rail protrudes the circumferential surface of energy-absorbing bar base；The cross section of the slide rail 7 be arc-shaped, when slide rail 7 with
After the chute 10 of the inner circumferential surface of cushion dashpot coordinates, point is contacted between the slide rail 7 and the basal surface of chute 10, effective to reduce
Therebetween friction.8~16 chutes are distributed on the inner circumferential surface of the cushion dashpot in a ring.In the present embodiment, institute
The quantity for stating chute is 8.
Flexible gaskets 5 are ring-type, on the connecting rod for being sleeved on the energy-absorbing bar, and in the cylinder body of cushion dashpot, in this
Cushion dashpot has between the inner face of through hole one end inboard wall of cylinder block and energy-absorbing bar base 6.Elastic buffer cushion block 1 is inlaid in the pressure-bearing
First 2 end face.
In Hopkinson pressure bar experiment, when the pressure bearing head 2 of transmission bar impact energy absorption bar, the embedded elasticity of pressure bearing head is delayed
Rush cushion block 1 impact kinetic energy has been carried out to buffer for the first time, be subsequently converted to the overall kinetic energy K of energy-absorbing bara；Described kinetic energy KaI.e.
The index of follow-up requirement.Energy-absorbing bar base 6 in cushion dashpot 4 is slided by slide rail 7 and chute 10 to the blind end of the cushion dashpot
It is dynamic, while making the back-moving spring 8 in free state produce compression.The effect of slide rail 7 and chute 10 is to reduce energy-absorbing bar base
Frictional resistance in moving process so that back-moving spring 8 turns into the main body for absorbing kinetic energy, so that it is maximum absorbable dynamic to increase quantization
The confidence level of energy.After impact kinetic energy is fully converted to the elastic potential energy of back-moving spring 8, back-moving spring 8 starts anti-to the other end
Bullet, and energy is absorbed by the flexible gaskets 5 between cushion dashpot 4 and energy-absorbing bar base 6, play a protective role, to prevent
The bounce-back of back-moving spring 8 is too quickly.Because under effect of inertia, back-moving spring 8 still can be to after bounce-back to free state
A segment distance is moved in the one end of flexible gaskets 5 again, and now the compression ring-type of energy-absorbing bar base 6 flexible gaskets 5, this portion of residual is moved
The elastic potential energy of packing ring can be converted into, back-moving spring 8 is stable at initial position again within a short period of time, that is, affranchise shape
State, so as to be ready for experiment next time.
Experiment proves that the present embodiment can set up bullet bullet speed or transmitting air pressure and the overall speed of energy-absorbing bar by repeatedly trying to beat
Relation between degree, so that maximum bullet bullet speed or transmitting air pressure are constrained by the absorbable kinetic energy of maximum, it is real to play protection
Experiment device, reduces the effect of danger coefficient.
Claims (5)
1. a kind of energy-absorbing buffer device, it is characterised in that including elastic buffer cushion block, energy-absorbing bar, cushion dashpot, flexible gaskets, cunning
Rail and back-moving spring；The cushion dashpot is placed on bearing；The energy-absorbing bar base of energy-absorbing bar one end is located at the cushion dashpot
In cylinder body, and the slide rail of the energy-absorbing bar base circumferential surface is set to be inlaid in respectively in the chute of cushion dashpot inner surface；The energy-absorbing bar
The other end pass through described cushion dashpot one end end face through hole, and make pressure bearing head be located at the cushion dashpot cylinder body outside；Inhaled described
Can flexible packing ring between bar base and cushion dashpot inner face；5~13 back-moving springs are located in the cylinder body of the cushion dashpot, and
One end of each back-moving spring is fixed on the outer face of energy-absorbing bar base of the energy-absorbing bar, make the other end of each back-moving spring
On the inwall for being fixed on the cushion dashpot other end.
2. energy-absorbing buffer device as claimed in claim 1, it is characterised in that in each back-moving spring, back-moving spring
Axis is overlapped with the straight line of the cushion dashpot, and remaining back-moving spring is distributed on four of the back-moving spring positioned at cushion dashpot center
Week.
3. energy-absorbing buffer device as claimed in claim 1, it is characterised in that the cushion dashpot is the cylindrical member of closing, is delayed at this
The through hole coordinated with energy-absorbing bar gap is provided with the end cap for rushing cylinder one end；8~16 are evenly equipped with the inner circumferential surface of the cushion dashpot
Individual chute, and make the position of each chute corresponding with the position of slide rail on the circumference of the energy-absorbing bar base.
4. energy-absorbing buffer device as claimed in claim 1, it is characterised in that one end of the energy-absorbing bar is pressure bearing head, the other end
For energy-absorbing bar base；There is the groove of circle in the end face axial of the pressure bearing head, for being embedded in elastic buffer cushion block；The energy-absorbing bar
8~16 strip slide rails parallel to the energy-absorbing bar center line are evenly equipped with the circumference of the energy-absorbing bar base of the other end；It is described
Slide rail protrudes the circumferential surface of energy-absorbing bar base；The cross section of the slide rail is arc-shaped.
5. energy-absorbing buffer device as claimed in claim 3, it is characterised in that have some exhausts in the cushion dashpot circumferential surface
Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621470421.1U CN206530634U (en) | 2016-12-30 | 2016-12-30 | A kind of energy-absorbing buffer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621470421.1U CN206530634U (en) | 2016-12-30 | 2016-12-30 | A kind of energy-absorbing buffer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206530634U true CN206530634U (en) | 2017-09-29 |
Family
ID=59917076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621470421.1U Expired - Fee Related CN206530634U (en) | 2016-12-30 | 2016-12-30 | A kind of energy-absorbing buffer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206530634U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187166A (en) * | 2018-09-04 | 2019-01-11 | 合肥姜水材性科技有限公司 | A kind of Hopkinson pressure bar rod end protective device |
| CN113607545A (en) * | 2021-08-17 | 2021-11-05 | 西北工业大学 | Single pulse separation type Hopkinson pull rod experiment device based on electromagnetic force loading |
-
2016
- 2016-12-30 CN CN201621470421.1U patent/CN206530634U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187166A (en) * | 2018-09-04 | 2019-01-11 | 合肥姜水材性科技有限公司 | A kind of Hopkinson pressure bar rod end protective device |
| CN113607545A (en) * | 2021-08-17 | 2021-11-05 | 西北工业大学 | Single pulse separation type Hopkinson pull rod experiment device based on electromagnetic force loading |
| CN113607545B (en) * | 2021-08-17 | 2024-05-07 | 西北工业大学 | Single pulse separation type Hopkinson pull rod experimental device based on electromagnetic force loading |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170929 Termination date: 20181230 |