CN107917161A - A kind of gas buffer - Google Patents
A kind of gas buffer Download PDFInfo
- Publication number
- CN107917161A CN107917161A CN201711311354.8A CN201711311354A CN107917161A CN 107917161 A CN107917161 A CN 107917161A CN 201711311354 A CN201711311354 A CN 201711311354A CN 107917161 A CN107917161 A CN 107917161A
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- CN
- China
- Prior art keywords
- cylinder
- piston
- wedge
- wall
- way mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000872 buffer Substances 0.000 title claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000004323 axial length Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 15
- 230000033001 locomotion Effects 0.000 description 12
- 239000007853 buffer solution Substances 0.000 description 11
- 230000003139 buffering effect Effects 0.000 description 11
- 230000035939 shock Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0218—Mono-tubular units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/368—Sealings in pistons
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a kind of gas buffer, it includes one-way mechanism, cylinder, damper piston and moving piston, damper piston before and after the cylinder with being disposed side by side in cylinder, cylinder is divided into preceding cylinder, three parts of middle cylinder and rear cylinder, gassy in the rear cylinder that damper piston is formed with the cylinder rear wall, one-way mechanism is fixed on the rear of the cylinder, there is wedge-shaped spring block in the end set that the piston rod of damper piston is put in one-way mechanism, wedge-shaped spring block carries the structure of spring for the bottom of wedge block, the end of piston rod is fixed in a manner of inclined-plane is towards rear by spring, one-way mechanism is provided with multiple wedge shaped stop teeth in rows along the longitudinal direction, the inclined-plane of the wedge shaped stop tooth is towards front, so as to configured with the mode of the inclined-plane relative engagement of wedge block.The present invention can make moving piston speed fall to zero quickly, can't rebound.
Description
Technical field
The present invention relates to a kind of mechanical shock field of projectile to equipment, particularly a kind of high-speed piston gas buffer dress
Put.
Background technology
The main function of gas buffer be when the projectile of high-speed motion is close to launching cradle terminal, using accumulation of energy or
Dissipative cell quickly absorbs and converts the kinetic energy of shock loading, while extends the action time of shock loading, so as to greatest extent
Ground reduces mechanical shock of the projectile to equipment.With fast development of the modern industry on high speed heavy-duty machinery, buffer system
Also it is more and more widely used, suitable buffer system is established in different industrial systems, can be effectively reduced
Equipment impact force, reduce vibration and noise, improve system performance, the stability for improving system etc..
Having been widely used for industrial buffer system at present has：Spring buffer system, rubber cushion system, hydraulic pressure delay
Flushing system etc..
Spring buffer system is mainly made of spring, housing and several parts such as meet and discuss.Spring is relied primarily in buffering course
Compression come absorption equipment hit produce kinetic energy, so as to reach the buffering effect of system requirements.Since the system has structure
Simply, easy to repair, buffering dynamics are big, the advantages that suitable for various temperature environments, using very extensive.But spring buffer system
Bounce-back it is larger, the equipment for being only applicable to middle motion speed.
Rubber cushion system is built up by full wafer rubber or multi-disc rubber slab, and a part of kinetic energy is consumed in buffering course
Interior friction, remaining kinetic energy are converted into compression potential energy.The buffer system has simple in structure, easy to maintenance, cheap, buffering
The advantages that effect is good；Shortcoming is that cushion performance has temperature sensitivity, is easily worn, and is only applicable to setting for low speed running
It is standby.
Hydraulic buffer system relies on hydraulic damping into row buffering, to rush the equipment of high-speed motion by throttle orifice absorption equipment
The kinetic energy of generation is hit, so as to play certain protective effect.The buffer system has that buffering dynamics are big and without bounce-back, stability and
Attenuation coefficient improves a lot compared with traditional buffer system；But structure is more complicated, system sealing is more demanding, and
And it is more sensitive to the temperature change of working environment, suitable for the equipment that high speed or quality are larger.
It was found from above-mentioned introduction, conventional buffer can not be applied in speed buffering system.
The content of the invention
It is an object of the invention to overcome the above-mentioned deficiency of the prior art, there is provided a kind of high-speed piston gas buffer,
Solves high-speed piston buffer problem so that damper piston movement velocity can quickly be buffered to zero, coordinate individual event mechanism can
So that damper piston stop motion when arrival rate is zero, achievees the purpose that not rebound, can reduce bullet to greatest extent
Mechanical shock of the beam to equipment.
The gas buffer of the present invention includes one-way mechanism, cylinder, damper piston and moving piston, the damper piston
With being disposed side by side on before and after the cylinder in the cylinder, the cylinder is divided into three preceding cylinder, middle cylinder and rear cylinder parts, it is described
Gassy in the rear cylinder that damper piston is formed with the cylinder rear wall, the one-way mechanism are fixed on the rear of the cylinder,
There are wedge-shaped spring block, the wedge shape spring block in the end set that the piston rod of the damper piston is put in the one-way mechanism
The structure of spring is carried for the bottom of wedge block, the piston is fixed in a manner of inclined-plane is towards rear by the spring
The end of bar, the one-way mechanism are provided with multiple wedge shaped stop teeth in rows along the longitudinal direction, the wedge shaped stop tooth it is oblique
Facing to front, so as to being configured with the mode of the inclined-plane relative engagement of the wedge block.
It is preferred that the one-way mechanism is similarly cylinder-like structure with the cylinder, and the two arranged coaxial, the wedge shaped stop
Tooth is along the circumferential direction equidistantly configured with multiple rows of in a manner of anteroposterior direction is rows of, and the wedge shape spring block is to coordinate multiple rows of institute
State the mode of wedge shaped stop tooth along the piston rod end circle of outer Monday be provided with it is multiple.
It is preferred that race diameter of the wedge shape spring block when spring stretches naturally, more straight than circumferential wedge shaped stop tooth inner ring
Big 18~the 20mm in footpath.
It is preferred that the wedge shaped stop tooth is made of Steel material.
It is preferred that the damper piston is divided into two parts, a part is the piston rod of cylindrical shaft structure, and another part is cone
Shape structure；Piston rod is located at the axle center of cylinder, and one end of piston rod is fixedly connected with the pyramidal structure vertex of a cone, piston rod it is another
End is through cylinder wall and stretches into one-way mechanism；The cone bottom of the pyramidal structure is divided into cylindrical shape, and the outer wall of cylinder
Contacted with the inner wall of cylinder；The inside of pyramidal structure is hollow structure.
It is preferred that the length that the cone bottom outer wall of the pyramidal structure is contacted with cylinder inner wall is 95~105mm；Pyramidal structure
The axis angle of the conical surface and cylinder is 65~85 °.
It is preferred that the internal diameter of the cylinder is 390~410mm, wall thickness is 48~52mm.
It is preferred that the moving piston is dumbbell shape structure, the axial length of moving piston is 480~520mm；Dumbbell knot
The both ends of structure are cylinder, and the outer wall of cylinder is contacted with cylinder inner wall；The middle part of dumbbell structure is cylindrical structure, directly
Footpath is 190~210mm；Cylinder of the moving piston away from damper piston one end is circumferentially arranged two annular seal grooves, institute
State and sealing ring is provided between seal groove and cylinder inner wall.
In a kind of above-mentioned gas buffer, the sealing ring is polytetrafluoroethylene material.
The present invention has the following advantages that compared with prior art：
(1) present invention employs compressed air buffering, the retro-speed of moving piston is improved, realizes speed buffering
Function；
(2) present invention employs one directional braking mechanism, the counter motion of damper piston is avoided, improves buffer system
Security；
(3) present invention employs teflin ring, wearability and heat-resisting quantity are improved, improves moving piston
Service life；
(4) moving piston of the present invention uses aluminum alloy material, reduces the quality of moving piston, improves buffering efficiency.
Brief description of the drawings
Fig. 1 is gas buffer schematic diagram of the present invention.
Fig. 2 is schematic diagram after apparatus of the present invention braking.
Fig. 3 (1), (2), (3) are one-way mechanism motion process figure of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
It is as shown in Figure 1 brake apparatus schematic diagram, as seen from the figure, a kind of gas buffer, including one-way mechanism 1, gas
Cylinder 2, damper piston 3, moving piston 4 and gas bleeder valve 5；Wherein, the internal diameter of cylinder 2 is 390~410mm, and wall thickness is 48~52mm；
Cylinder 2 is horizontal positioned cylindrical structure；3 level of damper piston is coaxially located at one end inside cylinder 2, and damper piston 3, which divides, is
Two parts, a part is cylindrical shaft structure, and another part is pyramidal structure；Cylindrical shaft structure is located at the axle center of cylinder 2, and cylinder
One end of rod structure is fixedly connected with the pyramidal structure vertex of a cone, and the other end of cylindrical shaft structure through axial one end of cylinder 2 and is stretched
Enter one-way mechanism 1；The cone bottom of the pyramidal structure is divided into cylindrical shape, and the outer wall of cylinder and the inner wall of cylinder 2 connect
Touch；The length that the cone bottom outer wall of pyramidal structure is contacted with 2 inner wall of cylinder is 95~105mm；A diameter of the 58 of cylindrical shaft structure~
62mm；The conical surface of pyramidal structure is 65~85 ° with the axis angle of cylinder 2；The inside of pyramidal structure is hollow structure；Movement is lived
Horizontal plug 4 is coaxially the inside with cylinder 2, and moving piston 4 is located at the inner side of damper piston 3；The one-way mechanism 1 is tubular
Structure；One-way mechanism 1 is coaxially located at the axial one end in the outside of cylinder 2, and one-way mechanism 1 is stretched into one end of damper piston 3；And circle
Mast arrangement stretch into one-way mechanism 1 one end it is circumferentially arranged have a wedge-shaped spring fast 6, wedge-shaped spring block 6 is the bottom of wedge block
Portion carries the structure of spring, is fixed on the end of piston rod in a manner of inclined-plane is towards rear by spring.Wedge-shaped spring block 6 can
Radially stretch；Gas bleeder valve 5 is arranged on the outer wall of cylinder 2, is connected with the inner cavity of cylinder 2, and gas bleeder valve 5 is located at 2 one end of cylinder
Between damper piston 3.
The circumferential direction of 1 inner wall of one-way mechanism is evenly arranged with stop tooth 7 at equal intervals, and the stop tooth 7 is Steel material；Stop tooth
7 for wedge shape, it is multiple along the longitudinal direction to set in rows, the inclined-plane of wedge shaped stop tooth towards front, so as to wedge-shaped spring block 6
The mode of the inclined-plane relative engagement of wedge block configures.
And wedge-shaped spring block 6 be fully extended after race diameter, it is bigger by 18 than the diameter of circumferential 7 inner ring of stop tooth~
20mm.There is spacer pin in wedge-shaped 6 front end of spring block, when after the test, wedge-shaped spring block 6 just with the promote-side on motor leading screw
Head contact, the spacer pin of wedge-shaped 6 front end of spring block is removed, and is started and is resetted motor, wedge-shaped spring block 6 is pushed into initial position
Afterwards, then by spacer pin reset.
Wherein, moving piston 4 is dumbbell shape structure, and the axial length of moving piston 4 is 480~520mm；Dumbbell structure
Both ends contacted for the outer wall of cylinder and cylinder with 2 inner wall of cylinder；The middle part of dumbbell structure is cylindrical structure, a diameter of
190~210mm；Cylinder of the moving piston 4 away from 3 one end of damper piston is circumferentially arranged two annular seal grooves 8.
Sealing ring is provided between 2 inner wall of the seal groove 8 and cylinder, sealing ring is polytetrafluoroethylene material.Except sealing
Other materials outside circle use aluminum alloy materials.
Schematic diagram after device is braked is illustrated in figure 2, is illustrated in figure 3 motion process figure, as seen from the figure, mechanism kinematic work
It is as process：
When moving piston 4 marches to the end of cylinder 2, it is necessary to carry out retarding braking to the piston of high-speed motion, movement is lived
Plug 4 and the damper piston 3 of seal air cavity front end collide, when the moment that moving piston 4 is contacted with damper piston 3, it is believed that two
Person is moved together with identical speed.With the increasing of piston stroke, the pressure in seal air cavity increases therewith, damper piston 3
With the counter-force suffered by moving piston 4 also will increase, until two-piston speed be zero position.
During this, the wedge-shaped spring block 6 of 3 one end of damper piston is by 7 radial compression of stop tooth of 1 inner wall of one-way mechanism
Afterwards, realize that damper piston 3 continues to stretch into inside one-way mechanism 1
Damper piston 3 is produced anti-after moving to extreme position due to the gases at high pressure effect in closed air chamber in order to prevent
Bullet, is provided with one-way mechanism 1, the stop tooth 7 inside one-way mechanism 1 organizes the return of wedge-shaped spring block 6 in 3 tail end of damper piston
Movement；
Piston stops completely after one-way mechanism 1 reaches a certain position, is then put the gas of higher-pressure region by gas bleeder valve 5
Go out, make system reset.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.
Claims (8)
- A kind of 1. gas buffer, it is characterised in that：It is described slow including one-way mechanism, cylinder, damper piston and moving piston Piston is rushed with being disposed side by side on before and after the cylinder in the cylinder, the cylinder is divided into three preceding cylinder, middle cylinder and rear cylinder portions Point, gassy in the rear cylinder that the damper piston is formed with the cylinder rear wall, the one-way mechanism is fixed on the cylinder Rear, have wedge-shaped spring block, the wedge in the end set that the piston rod of the damper piston is put in the one-way mechanism Shape spring block carries the structure of spring for the bottom of wedge block, is fixed on by the spring in a manner of inclined-plane is towards rear The end of the piston rod, the one-way mechanism are provided with multiple wedge shaped stop teeth in rows along the longitudinal direction, and the wedge shape is stopped The inclined-plane of moving teeth is towards front, so as to being configured with the mode of the inclined-plane relative engagement of the wedge block.
- 2. gas buffer as claimed in claim 1, it is characterised in that：The one-way mechanism is similarly round with the cylinder Tubular structure, the two arranged coaxial, the wedge shaped stop tooth is in a manner of anteroposterior direction is rows of, along the circumferential direction equidistantly configuration Have it is multiple rows of, it is described wedge shape spring block in a manner of coordinating multiple rows of wedge shaped stop tooth along the piston rod end outer Monday enclose It is provided with multiple.
- 3. gas buffer as claimed in claim 2, it is characterised in that：The wedge shape spring block is when spring stretches naturally Race diameter, the diameter than circumferential wedge shaped stop tooth inner ring is big 18~20mm.
- 4. gas buffer as claimed in claim 2 or claim 3, it is characterised in that：The wedge shaped stop tooth uses Steel material system Into.
- 5. gas buffer as claimed in claim 2, it is characterised in that：The damper piston is divided into two parts, one It is divided into the piston rod of cylindrical shaft structure, another part is pyramidal structure；Piston rod is located at the axle center of cylinder, and one end of piston rod It is fixedly connected with the pyramidal structure vertex of a cone, the other end of piston rod through cylinder wall and stretches into one-way mechanism；The pyramidal structure Cone bottom is divided into cylindrical shape, and the outer wall of cylinder is contacted with the inner wall of cylinder；The inside of pyramidal structure is hollow structure.
- 6. gas buffer as claimed in claim 5, it is characterised in that：In the cone bottom outer wall and cylinder of the pyramidal structure The length of wall contact is 95~105mm；The conical surface of pyramidal structure and the axis angle of cylinder are 65~85 °.
- 7. gas buffer as claimed in claim 1, it is characterised in that：The internal diameter of the cylinder is 390~410mm, Wall thickness is 48~52mm.
- 8. gas buffer as claimed in claim 6, it is characterised in that：The moving piston is dumbbell shape structure, fortune The axial length of piston is 480~520mm；The both ends of dumbbell structure are cylinder, and the outer wall of cylinder with cylinder Wall contacts；The middle part of dumbbell structure is cylindrical structure, a diameter of 190~210mm；Moving piston is away from damper piston one end Cylinder is circumferentially arranged two annular seal grooves, and sealing ring is provided between the seal groove and cylinder inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711311354.8A CN107917161A (en) | 2017-12-11 | 2017-12-11 | A kind of gas buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711311354.8A CN107917161A (en) | 2017-12-11 | 2017-12-11 | A kind of gas buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107917161A true CN107917161A (en) | 2018-04-17 |
Family
ID=61893231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711311354.8A Pending CN107917161A (en) | 2017-12-11 | 2017-12-11 | A kind of gas buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107917161A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201554719U (en) * | 2009-11-13 | 2010-08-18 | 浙江工业大学 | High-speed two-out bar hydraulic cylinder cushion device |
| CN202082200U (en) * | 2011-05-31 | 2011-12-21 | 深圳华强文化科技集团股份有限公司 | Buffer cylinder |
| CN105090167A (en) * | 2015-08-24 | 2015-11-25 | 航天长征化学工程股份有限公司 | Quick exhaust buffer gear |
| CN206522399U (en) * | 2017-01-26 | 2017-09-26 | 中国航天空气动力技术研究院 | A kind of short distance high speed pneumatic buffer unit |
| CN206522302U (en) * | 2017-02-06 | 2017-09-26 | 中国航天空气动力技术研究院 | A kind of high-speed piston brake apparatus |
| CN207701651U (en) * | 2017-12-11 | 2018-08-07 | 中国航天空气动力技术研究院 | A kind of gas buffer |
-
2017
- 2017-12-11 CN CN201711311354.8A patent/CN107917161A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201554719U (en) * | 2009-11-13 | 2010-08-18 | 浙江工业大学 | High-speed two-out bar hydraulic cylinder cushion device |
| CN202082200U (en) * | 2011-05-31 | 2011-12-21 | 深圳华强文化科技集团股份有限公司 | Buffer cylinder |
| CN105090167A (en) * | 2015-08-24 | 2015-11-25 | 航天长征化学工程股份有限公司 | Quick exhaust buffer gear |
| CN206522399U (en) * | 2017-01-26 | 2017-09-26 | 中国航天空气动力技术研究院 | A kind of short distance high speed pneumatic buffer unit |
| CN206522302U (en) * | 2017-02-06 | 2017-09-26 | 中国航天空气动力技术研究院 | A kind of high-speed piston brake apparatus |
| CN207701651U (en) * | 2017-12-11 | 2018-08-07 | 中国航天空气动力技术研究院 | A kind of gas buffer |
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