CN207349198U - A kind of cylinder with Buffer Unit - Google Patents
A kind of cylinder with Buffer Unit Download PDFInfo
- Publication number
- CN207349198U CN207349198U CN201721140933.6U CN201721140933U CN207349198U CN 207349198 U CN207349198 U CN 207349198U CN 201721140933 U CN201721140933 U CN 201721140933U CN 207349198 U CN207349198 U CN 207349198U
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- CN
- China
- Prior art keywords
- piston
- cylinder
- buffer unit
- end cover
- venthole
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of cylinder with Buffer Unit,Solve pressure release Buffer Unit and the collision of upper and lower end cap of existing bounce cylinder,Vibration is produced to piston,Influence the airtight shape of piston,So that the service life of cylinder shortens,A kind of its key points of the technical solution are that cylinder with Buffer Unit,It includes cylinder barrel,Upper end cover and bottom end cover installed in cylinder barrel both ends,Piston rod and the piston being connected with piston rod,Sliding chamber is equipped with cylinder barrel,Sliding chamber and piston outer periphery face coordinate,It is characterized in that,Upper end cover and bottom end cover are equipped with venthole and discouraged Buffer Unit,The open communication of venthole and sliding chamber,The Buffer Unit that loses heart includes relief tube and sealing,The sliding chamber of both ends connection and venthole of relief tube,Sealing is arranged on the junction of relief tube and venthole,Sealing only allows sliding intracavity gas to circulate to venthole,Prevent it from causing to damage with end cap sharp impacts.
Description
Technical field
It the utility model is related to pneumatic device, more particularly to a kind of cylinder with Buffer Unit.
Background technology
Cylinder is a kind of pneumatic element, it should have in every field and derive many mutation extensively.For example, notification number is
The Chinese patent automobile door pump cylinder of CN204664053U, discloses a kind of automobile door pump cylinder, including：Cylinder barrel, on
End cap, bottom end cover, piston, piston rod, cover equipped with intake and exhaust port in upper and lower side, pressure relief buffering mechanism are equipped with piston,
Pressure relief buffering mechanism includes the thimble and relief hole through piston, and thimble and piston rod are coaxial, and thimble both ends are respectively to contradict
End and sealed end, contradict end and piston face accompanies gasket seal, contradict end and piston face accompanies spring and spring shim pad
Piece.Moved with piston, contradict end and contact corresponding end cap, make spring-compressed, sealed end and gasket seal separation, piston both sides are empty
Chamber connects air pressure balance, plays the role of pressure release buffering.
It is disadvantageous in that place is supported in the both ends of the thimble during piston motion in upper end cover and bottom end cover so that piston
Move it is not in place, cylinder action it is unstable, reduce the leakproofness of cylinder, shorten the service life of cylinder.
Utility model content
The purpose of this utility model is to provide a kind of cylinder with Buffer Unit, and damper piston movement, improves making for cylinder
Use the service life.
The above-mentioned technical purpose of the utility model technical scheme is that：
A kind of cylinder with Buffer Unit, it includes cylinder barrel, the upper end cover installed in cylinder barrel both ends and bottom end cover, piston rod
The piston being connected with piston rod, cylinder barrel is interior to be equipped with sliding chamber, and sliding chamber and piston outer periphery face coordinate, and the upper end cover and bottom end cover are set
There is the open communication of venthole and discouraged Buffer Unit, the venthole and sliding chamber, the discouraged Buffer Unit includes relief tube
And sealing, the sliding chamber of both ends connection and venthole, the sealing of the relief tube are arranged on the company of relief tube and venthole
Place is met, the sealing only allows sliding intracavity gas to circulate to venthole.
By using above-mentioned technical proposal, for cylinder in use, venthole is connected with air pump, chamber is slided on venthole edge in both sides
Same axial direction alternating inspiratory and ventilation, by air push piston, so as to drive piston rod back and forth movement, when piston is to upper end cover
During movement, the cunning chamber pressure below piston is more than the cunning chamber above piston, when the lower end of piston moves to the sliding chamber one of relief tube connection
During the top at end, the cunning chamber below piston is connected by relief tube with venthole with the cunning chamber above piston, and air pressure tends to balance,
The power of piston is promoted to disappear, piston is moved up by inertia；When piston moves downward again, venthole and pressure in upper end cover
Contracting air communication, sealing are closed so that relief tube does not connect, cunning chamber air pressure above piston increase, promotes piston to moving down
Dynamic, the operation principle of the discouraged Buffer Unit of bottom end cover is identical, to piston when realizing piston motion close to upper end cover or bottom end cover
Into row buffering, prevent it from causing to damage to upper end cover, bottom end cover and piston with end cap sharp impacts.
Preferably, the sealing includes storage tank, sealant beads, baffle of porous baffle and spring, and the storage tank is located at
One end that relief tube is connected with venthole, the sealant beads are placed in storage tank, and itself and relief tube are interference fitted, the band
Hole baffle is fixed on notch of the storage tank towards venthole, and the spring clip is between baffle of porous baffle and sealant beads.
By using above-mentioned technical proposal, compressed air ejection sealant beads in storage tank to realize sealing, work as venthole
When interior air pressure is smaller, sealant beads are lifted off from the relief tube mouth of pipe so as to seal opening, and when air pressure is larger in venthole, sealant beads are supported
Relief tube mouth of pipe one end is pressed to form sealing effect.
Preferably, the storage tank is circular groove.
By using above-mentioned technical proposal, slip of the sealant beads in storage tank is more convenient, easy to the unlatching of sealing
Or close.
Preferably, the storage tank is square groove, and the outer circumferential surface of the sealant beads and the inner wall of storage tank offset.
By using above-mentioned technical proposal, the direction of motion of the limitation sealant beads in storage tank, prevents sealant beads accommodating
Rocked in groove and cause abnormal sound.
Preferably, the piston is cylindrical, and the both ends of its outer circumferential surface are equipped with sealing ring.
By using above-mentioned technical proposal, strengthen the sealing of piston and sliding chamber, prevent piston both sides pressure communication.
Preferably, the sealing ring includes retainer ring and Shape-changeable ring, the Shape-changeable ring and the fixation fixed with piston
Ring one end week offsets along connection, and the inner wall of the lateral surface of the Shape-changeable ring and sliding chamber.
By using above-mentioned technical proposal, when piston is slided in inner wall of cylinder to one end of cylinder barrel, away from moving direction
The deformation circumferential direction retainer ring of one end reclines, and compresses deformation by the inner wall of sliding chamber, plays sealing function, and the sealing of existing single annular
Circle is compared, and sealing effect is more preferable.
Preferably, the piston is equipped with an annular groove between two sealing rings, and wear ring is equipped with the annular groove, described
The outer circumferential surface of wear ring and sliding cavity wall offset.
By using above-mentioned technical proposal, wear ring is against inner wall of cylinder slip, plays guiding role, prevents sealing ring from becoming
Shape makes the inclination of piston outer periphery face cause piston interim card or vibration.
Preferably, it is equipped with the piston towards the two sides of upper end cover and bottom end cover to column.
It by using above-mentioned technical proposal, can offset to column with upper end cover and bottom end cover, prevent piston direct collision from causing
Damage.
Preferably, some fixed links are fixed between the upper end cover and bottom end cover, the fixed link is parallel and cylinder
The axial direction of cylinder and its be uniformly distributed around the axle center of cylinder barrel.
By using above-mentioned technical proposal, fixed link fixes upper end cover and bottom end cover, upper end cover and bottom end cover is clamped in
The both ends of cylinder barrel, prevent it from deviating from because of air pressure or collision.
In conclusion the utility model has the advantages that：
Cylinder promotes piston in use, venthole is connected with the compressed-air line with valve, by compressed air, so that
Piston rod is driven to move up and down.When the piston is moving up, for sliding chamber in being passed through compressed air in piston lower section, its pressure is big
The air pressure of cunning intracavitary above piston, when piston is during upper end cover, the lower end of piston moves to relief tube and sliding chamber connects
When on the logical mouth of pipe, the cunning intracavitary compressed air below piston is opened sealing by relief tube so that the cunning above and below piston
Chamber is connected by bleeder port with snorkel, and the pressure communication of the cunning intracavitary of piston both sides simultaneously tends to balance, and promotes piston upward
Power disappears, and piston is moved up by inertia；When piston moves downward again, venthole and compressed air connect in upper end cover
Logical, sealing, which closes, plays sealing function, and the cunning chamber air pressure increase above piston, promotes piston to move down, bottom end cover is let out
The operation principle of gas Buffer Unit is identical, and piston is prevented into row buffering when realizing piston motion close to upper end cover or bottom end cover
It causes to damage with end cap sharp impacts to upper end cover, bottom end cover and piston.
Brief description of the drawings
Fig. 1 is the structure diagram of the bounce cylinder of embodiment one；
Fig. 2 is the sectional view of the cylinder barrel of embodiment one；
Fig. 3 is the explosive view of the upper end cover of embodiment one；
Fig. 4 is sectional view of 1 figure at A-A；
Fig. 5 is the structural representation of the piston rod and piston of embodiment one；
Fig. 6 is partial enlarged views of the Fig. 4 at B；
Fig. 7 is partial enlarged views of the Fig. 4 at C；
Fig. 8 is the sectional view of discouraged Buffer Unit in embodiment two.
Brief description of the drawings：1st, cylinder barrel；11st, sliding chamber；111st, upper chamber；112nd, lower chambers；12nd, mounting groove；121st, cylinder cap seals
Groove one；2nd, upper end cover；21st, axis hole；22nd, axle sleeve；23rd, venthole；24th, fixed link；3rd, erecting bed；31st, air cavity；32nd, cylinder cap is close
Sealing groove two；33rd, sealing ring；34th, to jet-bedding；4th, bottom end cover；5th, piston rod；51st, cylinder nut；52nd, mounting hole；6th, piston；61、
Perforation；611st, to ring；62nd, to column；63rd, sealing ring；631st, retainer ring；632nd, Shape-changeable ring；64th, annular groove；65th, wear ring；7th, let out
Gas Buffer Unit；71st, sealing；711st, storage tank；712nd, sealant beads；713rd, baffle of porous baffle；715th, spring；72nd, relief tube.
Embodiment
Lower combination attached drawing is described in further detail the utility model.
Embodiment one,
As shown in Figure 1, a kind of cylinder with Buffer Unit, it includes cylinder barrel 1, the piston rod 5 in insertion cylinder barrel 1, peace
Upper end cover 2 and bottom end cover 4 mounted in 1 both ends of cylinder barrel.
As shown in Figure 2, wherein cylinder barrel 1 is in the form of a column, its interior is equipped with slides chamber 11.The both ends open of sliding chamber 11, and it is open
Interior edge is equipped with the mounting groove 12 of annular, and the side wall of two mounting grooves 12 is equipped with two annular cylinder cap sealings along sliding chamber 11 is circumferential
Groove 1.
As shown in attached drawing 1 and attached drawing 3, upper end cover 2 is rectangular, and 2 center of upper end cover is equipped with axis hole 21, and axis hole 21 is installed with an axis
Set 22.And four fixed links 24 are installed with the corner of upper end cover 2, fixed link 24 is uniformly distributed around the axle center of axis hole 21, and solid
Fixed pole 24 is extended axially downward along axis hole 21 and is threadedly coupled with bottom end cover 4, and upper end cover 2 and bottom end cover 4 are clamped in cylinder barrel 1
Both ends, prevent both because in sliding chamber 11 pressure it is excessive and deviate from.The one side of upper end cover 2 towards cylinder barrel 1 is equipped with annular at the same time
Erecting bed 3, its outer circumferential surface are equipped with two annulars and cylinder cap seal groove 2 32 corresponding with cylinder cap seal groove 1.
As shown in Figure 4, upper end cover 2 and when being installed with cylinder barrel 1, the outer circumferential surface and mounting groove 12 of erecting bed 3 are bonded, cylinder cap
Sealing ring 33 is equipped with seal groove 2 32, when erecting bed 3 is against mounting groove 12 towards cylinder barrel 1 away from one end in the sliding chamber 11 of direction
When on the cell wall of opening, cylinder cap seal groove 1 and cylinder cap seal groove 2 32 are aligned, and 33 extrusion of sealing ring, are formed
Sealing effect.Erecting bed 3 is equipped with air cavity 31 of cylindricality in it at the same time, is provided with the bottom surface of air cavity 31 coaxial with erecting bed 3
To jet-bedding 34.The one side of upper end cover 2 is equipped with venthole 23, and venthole 23 is L-shaped, it extends to the center of upper end cover 2
Afterwards, and bend downward and be connected with air cavity 31.Bottom end cover 4 is rectangular at the same time, and structure and upper end cover 2 are close, are again provided with thereon
Venthole 23 and erecting bed 3.
As shown in figures 4 and 5, piston rod 5 is in the form of a column, and its one end band cylinder nut 51, its other end passes through axle sleeve
22 and it is inserted into sliding chamber 11, and the mounting hole 52 coaxial with piston rod 5 is provided with the end face of the end, and mounting hole 52 carries
Internal thread.Piston 6 is cylindrical, and the inner peripheral surface of its outer circumferential surface and sliding chamber 11 agrees with, its center, which is equipped with, and mounting hole 52 is matched wears
Hole 61, and 61 inner circumferentials are inward-facing to be provided with one and supports ring 611 perforating.And piston 6 is equal towards upper end cover 2 and 4 two sides of bottom end cover
It is equipped with and perforates and is 61 coaxial and support column 62 for hollow circuit cylinder, can be inserted into column 62 in jet-bedding 34.When piston 6 and piston rod 5
During installation, one end of piston rod 5 is plugged in and mounting hole 52 interior to column 62 and the alignment of perforation 61, from perforation 61 away from piston rod 5
One end insertion bolt part and bolt is threadedly coupled with mounting hole 52, piston 6 is fixed on piston rod 5.Support column 62 at the same time
Highly it is more than the depth to jet-bedding 34, when piston 6 is moved to upper end cover 2 or bottom end cover 4, the bottom surface to column 62 and to jet-bedding 34
Abut against, avoid piston 6 and 4 diameter of bottom end cover from supporting punching so as to protect piston 6.
As shown in Figure 6, and on the outer circumferential surface at 6 both ends of piston sealing ring 63 is respectively and fixedly provided with, sealing ring 63 includes coaxial
Retainer ring 631 and Shape-changeable ring 632, the wherein outer circumferential surface of retainer ring 631 and piston 6 be bonded, Shape-changeable ring 632 is located at retainer ring
Outside 631, Shape-changeable ring 632 becomes larger towards 6 end direction of piston its diameter and offsets with sliding 11 inner wall of chamber, and Shape-changeable ring 632 is remote
All edges from 6 end of piston are connected with 631 outer circumferential surface of retainer ring.When piston 6 is slided in 1 inner wall of cylinder barrel to one end of cylinder barrel 1
When, Shape-changeable ring 632 of the piston 6 away from moving direction one end compresses deformation by the inner wall of sliding chamber 11, reclines to retainer ring 631, rises
To sealing function.So as to which sliding chamber 11 is divided into the upper chamber 111 close to upper end cover 2 and the lower chambers close to bottom end cover 4 by piston 6
112.And the outer circumferential surface of piston 6 is equipped with annular groove 64 between two sealing rings 63, annular groove 64 is recessed to the axle center of piston 6, it is perpendicular
Section is trapezoidal.The wear ring 65 coordinated with annular groove 64, the outer circumferential surface of wear ring 65 and sliding chamber 11 are posted in annular groove 64 at the same time
Wall offset.Wear ring 65 is against the slip of 1 inner wall of cylinder barrel at the same time, plays guiding role, prevents the deformation of sealing ring 63 from making piston 6
Outer circumferential surface tilts and causes 6 interim card of piston or vibration.
As shown in Figure 7, while cylinder is equipped with the Buffer Unit 7 that loses heart on upper end cover 2 and bottom end cover 4, it includes pressure release
Pipe 72 and sealing 71.Relief tube 72 is equipped with erecting bed 3, relief tube 72 is axially extending along sliding chamber 11, and one end connection is logical
Stomata 23, other end direction 11 axis direction opening of sliding chamber.Sealing 71 is located at 23 junction of relief tube 72 and venthole, it is wrapped
Include baffle of porous baffle 713, storage tank 711 and sealant beads 712.Wherein storage tank 711 is circular groove, and is located at relief tube 72 towards ventilation
At the mouth of pipe of 23 one end of hole, bleeder port is had a diameter larger than.Sealant beads 712 are positioned in storage tank 711, can be in storage tank 711
It is mobile, itself and 72 mouth of pipe phase interference of relief tube.To strengthen the stability of the work of sealing 71 into one, in 713 He of baffle of porous baffle
Spring 715 is accompanied between sealant beads 712, spring 715 supports steel ball position, in sealing gravity direction away from 72 mouth of pipe of relief tube
In the case of, avoid air pressure is too small from can not promoting sealant beads 712.The selection of spring 715 can be depending on actual conditions, such as ventilative sea
Continuous or spring.
The operation principle of the utility model：Cylinder is in use, venthole 23 is connected with air pump, and both sides venthole 23 is along cunning
The same axial alternating inspiratory of chamber 11 and ventilation, by air push piston 6, so as to drive 5 back and forth movement of piston rod.Work as epicoele
When 23 air-breathing of venthole of the connection of room 111, the venthole 23 of lower chambers 112 lead to compressed air, piston 6 is moved to upper end cover 2, and
In piston 6 during upper end cover 2, when the lower end of piston 6 is moved to above the mouth of pipe that relief tube 72 is connected with sliding chamber 11, piston
Sealant beads 712 are lifted off the mouth of pipe of relief tube 72 so that upper chamber by relief tube 72 by compressed air in the cunning chamber 11 of 6 lower sections
111 are connected by bleeder port with snorkel, and air pressure tends to balance, and promote the power of piston 6 to disappear, piston 6 is moved by inertia；When
When piston 6 moves downward again, sealant beads 712 are pressed on pressure release by venthole 23 and compressed air communication in upper end cover 2, air pressure
The mouth of pipe of pipe 72 plays sealing function, and upper chamber's 111 air pressure increase, promotes piston 6 to move down, the discouraged buffering of bottom end cover 4
The operation principle of component 7 is identical, realizes when piston 6 is moved close to upper end cover 2 or bottom end cover 4 to piston 6 into row buffering, prevents from living
Fill in 6 sharp impacts upper end cover 2, bottom end cover 4 and piston 6 are caused to damage.
Embodiment two,
As shown in Figure 8, a kind of cylinder with Buffer Unit, on the basis of embodiment two, based on embodiment one
On the basis of, it is that storage tank 711 is square groove, the outer circumferential surface of sealant beads 712 and the inner wall patch of storage tank 711 with embodiment one
Lean on, so as to limit moving direction of the sealant beads 712 in storage tank 711, prevent sealant beads 712 are rocked in storage tank 711 from making
Into abnormal sound.
This specific embodiment is only explanation to the utility model, it is not the limitation to the utility model, ability
Field technique personnel as needed can make the present embodiment the modification of no creative contribution after this specification is read, but
As long as all protected in the right of the utility model be subject to Patent Law.
Claims (9)
1. a kind of cylinder with Buffer Unit, it includes cylinder barrel（1）, installed in cylinder barrel（1）The upper end cover at both ends（2）With bottom end cover
（4）, piston rod（5）With with piston rod（5）The piston of connection（6）, cylinder barrel（1）It is interior to be equipped with sliding chamber（11）, sliding chamber（11）And piston
（6）Outer circumferential surface coordinates, it is characterised in that the upper end cover（2）And bottom end cover（4）Equipped with venthole（23）With discouraged Buffer Unit
（7）, the venthole（23）With sliding chamber（11）Open communication, the discouraged Buffer Unit（7）Including relief tube（72）With it is close
Envelope portion（71）, the relief tube（72）The sliding chamber of both ends connection（11）And venthole（23）, the sealing（71）It is arranged on and lets out
Pressure pipe（72）And venthole（23）Junction, the sealing（71）Only allow sliding chamber（11）Interior gas is to venthole（23）Stream
It is logical.
A kind of 2. cylinder with Buffer Unit according to claim 1, it is characterised in that the sealing（71）Including holding
Put groove（711）, sealant beads（712）, baffle of porous baffle（713）And spring（715）, the storage tank（711）It is located at relief tube（72）
And venthole（23）One end of connection, the sealant beads（712）It is placed in storage tank（711）It is interior, and itself and relief tube（72）Cross
It is full of cooperation, the baffle of porous baffle（713）It is fixed on storage tank（711）Towards venthole（23）Notch, the spring（715）Folder
In baffle of porous baffle（713）And sealant beads（712）Between.
A kind of 3. cylinder with Buffer Unit according to claim 2, it is characterised in that the storage tank（711）For circle
Groove.
A kind of 4. cylinder with Buffer Unit according to claim 2, it is characterised in that the storage tank（711）For side
Groove, the sealant beads（712）Outer circumferential surface and storage tank（711）Inner wall offset.
A kind of 5. cylinder with Buffer Unit according to claim 1, it is characterised in that the piston（6）It is cylindrical, its
The both ends of outer circumferential surface are equipped with sealing ring（63）.
A kind of 6. cylinder with Buffer Unit according to claim 5, it is characterised in that the sealing ring（63）Including with
Piston（6）Fixed retainer ring（631）And Shape-changeable ring（632）, the Shape-changeable ring（632）And retainer ring（631）One end week is along even
Connect, and the Shape-changeable ring（632）Lateral surface and sliding chamber（11）Inner wall offset.
A kind of 7. cylinder with Buffer Unit according to claim 6, it is characterised in that the piston（6）In two sealings
Circle（63）Between be equipped with an annular groove（64）, the annular groove（64）It is interior to be equipped with wear ring（65）, the wear ring（65）Outer circumferential surface
With sliding chamber（11）Inner wall offsets.
A kind of 8. cylinder with Buffer Unit according to claim 1, it is characterised in that the piston（6）On towards upper
End cap（2）And bottom end cover（4）Two sides be equipped with to column（62）.
A kind of 9. cylinder with Buffer Unit according to claim 1, it is characterised in that the upper end cover（2）And lower end
Lid（4）Between be fixed with some fixed links（24）, the fixed link（24）Parallel and cylinder barrel（1）Axial direction and its surround cylinder barrel
（1）Axle center be uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721140933.6U CN207349198U (en) | 2017-09-07 | 2017-09-07 | A kind of cylinder with Buffer Unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721140933.6U CN207349198U (en) | 2017-09-07 | 2017-09-07 | A kind of cylinder with Buffer Unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207349198U true CN207349198U (en) | 2018-05-11 |
Family
ID=62410785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721140933.6U Expired - Fee Related CN207349198U (en) | 2017-09-07 | 2017-09-07 | A kind of cylinder with Buffer Unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207349198U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115303502A (en) * | 2022-10-08 | 2022-11-08 | 成都航天万欣科技有限公司 | Pneumatic catapult of unmanned aerial vehicle |
-
2017
- 2017-09-07 CN CN201721140933.6U patent/CN207349198U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115303502A (en) * | 2022-10-08 | 2022-11-08 | 成都航天万欣科技有限公司 | Pneumatic catapult of unmanned aerial vehicle |
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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: 20180511 Termination date: 20190907 |