CN207830259U - A kind of reliable bidirectional buffering hydraulic cylinder - Google Patents
A kind of reliable bidirectional buffering hydraulic cylinder Download PDFInfo
- Publication number
- CN207830259U CN207830259U CN201721493332.3U CN201721493332U CN207830259U CN 207830259 U CN207830259 U CN 207830259U CN 201721493332 U CN201721493332 U CN 201721493332U CN 207830259 U CN207830259 U CN 207830259U
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- CN
- China
- Prior art keywords
- rear end
- cylinder body
- oil circuit
- buffering
- piston
- 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 provides a kind of reliable bidirectional buffering hydraulic cylinder, the piston rod and piston of interior intracavitary including cylinder body, positioned at cylinder body, the front end of the cylinder body is provided with drive end bearing bracket, the rear end linking of the cylinder body has rear end cap, it is connected with front end oil nozzle on the casing wall of the cylinder body front end, rear end oil nozzle is connected on the casing wall of the rear end of the cylinder block；Preceding terminal adapter is provided on the outside of the drive end bearing bracket, the rear end of the piston rod is provided with backend connector, the through-hole passed through for piston rod is provided on the rear end cap；It is provided with forward end seal component on the piston, the contact position of the rear end cap and piston rod is provided with back-end sealing component.The advantages such as the utility model realizes the bidirectional buffering of hydraulic cylinder, and high with reliability, simple in structure, and manufacturing cost is low, meet the demand in the market to hydraulic cylinder.
Description
Technical field
The utility model is related to oil cylinder technical field, specifically a kind of reliable bidirectional buffering hydraulic cylinder.
Background technology
Over 10 years, with the high speed development of economic construction, in engineering machinery, production equipment and automobile industry to high standard,
The demand of the hydraulic cylinder of high-performance and high safety performance is more and more.The oil cylinder of overflow valve function is needed to exist currently on the market
Circuit structure design is complicated, and when quality problems occurs in any one element, can generate security risk to entire oil hydraulic system,
For the high equipment of some long-term actions and quality requirement, these overflow valve function oil cylinders are to cannot be satisfied the market demand, separately
The external oil cylinder for increasing additional valve and oil path block, manufacturing cost and complex process, equally cannot be satisfied these market demands.
Utility model content
The purpose of this utility model is to provide a kind of reliable bidirectional buffering hydraulic cylinders, to solve in above-mentioned background technology
The problem of proposition.
To achieve the above object, the utility model provides the following technical solutions：A kind of reliable bidirectional buffering hydraulic oil is provided
Cylinder, including cylinder body, positioned at cylinder body interior intracavitary piston rod and piston, the front end of the cylinder body is provided with drive end bearing bracket, the cylinder
The rear end linking of body has rear end cap, front end oil nozzle is connected on the casing wall of the cylinder body front end, on the casing wall of the rear end of the cylinder block
It is connected with rear end oil nozzle；Preceding terminal adapter is provided on the outside of the drive end bearing bracket, the rear end of the piston rod is provided with rear end company
Device is connect, the through-hole passed through for piston rod is provided on the rear end cap；Forward end seal component is provided on the piston, after described
The contact position of end cap and piston rod is provided with back-end sealing component.
Further, the front end oil nozzle is placed with the first steel ball with cylinder body junction, and the rear end oil nozzle connects with cylinder body
The place of connecing is placed with the second steel ball.
Further, the junction of the cylinder body and front end oil nozzle is provided with front end working connection hole and front end buffering oil circuit
Hole, interior the first access for being equipped with connection front end working connection hole and front end buffering oil circuit hole of the front end oil nozzle, first steel ball
It is placed in first access；The junction of the cylinder body and rear end oil nozzle is provided with rear end working connection hole and rear end buffering oil
Lu Kong, the interior alternate path for being equipped with connection rear end working connection hole and rear end buffering oil circuit hole of the rear end oil nozzle, second steel
Pearl is placed in the alternate path.
Further, the first buffering oil circuit and the second buffering oil circuit of L-type are provided on the piston；First buffering
The Single port of oil circuit connect with cylinder body and is located on same shaft section with front end buffering oil circuit hole, the first buffering oil circuit
Another port be connected between forward end seal component and rear end cap and with inner cavity；It is described second buffering oil circuit Single port with
Cylinder body connects and is located on same shaft section with rear end buffering oil circuit hole, and the another port of the second buffering oil circuit is located at
It is connected between forward end seal component and drive end bearing bracket and with inner cavity.
Further, the forward end seal component is nested on piston, is sequentially the first wear ring sealing ring from front to back
60, the second sealing ring 61 and third wear ring sealing ring, have the first buffering between the first wear ring sealing ring and the second sealing ring
The outlet of oil circuit.
Further, the back-end sealing component is nested on rear end cap, is sequentially U-shaped sealing ring from front to back and dust-proof
Sealing ring.
Further, the rear end cap is connected by clamp spring and limited block with inboard wall of cylinder block.
Further, the piston is fixedly connected by screw thread with piston rod.
Further, first steel ball and the second steel ball respectively there are two, the front end buffering oil circuit hole and rear end are slow
Rush oil circuit hole respectively there are two.
Further, the rear end cap is provided with rear end O-ring seals, the inside of the piston and work with cylinder body contact position
Stopper rod junction is provided with front end O-ring seals.
Compared with prior art, the utility model advantageous effect：First steel ball and the second steel ball serve as valve, rear end cap
Design for disassembly is convenient for carrying out fault detect or part replacement, two L-type buffering oil circuits and two oil nozzles to the hydraulic cylinder
Design so that the utility model is realized the bidirectional buffering of hydraulic cylinder, and the utility model has that reliability is high, simple in structure,
The advantages such as manufacturing cost is low, meet the demand in the market to hydraulic cylinder.
Description of the drawings
Fig. 1 is the overall schematic of the utility model；
Fig. 2 is the operating diagram of the utility model.
In figure：1- drive end bearing brackets；Terminal adapter before 10-；2- rear end caps；20- backend connectors；21- clamp springs；22- limited blocks；
3- cylinder bodies；The inner cavities 30-；4- pistons；40- piston rods；411- first buffers oil circuit；412- second buffers oil circuit；The front ends 42- are O-shaped
Sealing element；43- bolts；The O-shaped sealing element in the rear ends 5-；60- the first wear ring sealing rings；The second sealing rings of 61-；62- thirds are wear-resisting
Ring sealing ring；70- U-shaped sealing rings；71- dust-proof seal rings；The front ends 81- oil nozzle；The rear ends 82- oil nozzle；The first steel balls of 91-；92-
Second steel ball；The front ends 93- buffer oil circuit hole；The rear ends 94- buffer oil circuit hole；The front ends 95- working connection hole；The rear ends 96- working connection hole.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Please refer to Fig.1-2, in the utility model embodiment, a kind of reliable bidirectional buffering hydraulic cylinder, including cylinder body 3, position
In piston rod 7 and piston 4 in the inner cavity of cylinder body 3 30.
The front end of the cylinder body 3 is provided with drive end bearing bracket 1, and the inner wall of 3 rear end of the cylinder body passes through clamp spring 21 and limited block 22
Linking has rear end cap 2, and the through-hole passed through for piston rod 40 is provided on the rear end cap 2.Connect on the casing wall of 3 front end of the cylinder body
Front end oil nozzle 81 is connected to, before the junction setting of the cylinder body 3 and front end oil nozzle 81 is there are one front end working connection hole 95 and two
End buffering oil circuit hole 93, the front end oil nozzle 81 is interior to be equipped with the first of connection front end working connection hole 95 and front end buffering oil circuit hole 93
Access 83, first steel ball 91 are placed in first access 83；Rear end oil is connected on the casing wall of 3 rear end of the cylinder body
There are one rear end working connection holes 96 and two rear ends to buffer oil circuits for the junction setting of mouth 82, the cylinder body 3 and rear end oil nozzle 82
Hole 94, the interior alternate path 84 for being equipped with connection rear end working connection hole 96 and rear end buffering oil circuit hole 94 of the rear end oil nozzle 82, institute
The second steel ball 92 is stated to be placed in the alternate path 84.
The forward end seal component is nested on piston, is sequentially that the first wear ring sealing ring 60, second is close from front to back
Seal 61 and third wear ring sealing ring 62, there is the first buffering oil circuit between the first wear ring sealing ring 60 and the second sealing ring 61
411 outlet；The back-end sealing component is nested on rear end cap 2, is sequentially U-shaped sealing ring 70 and dust seal from front to back
Circle 71.
The outside of the drive end bearing bracket 1 is provided with preceding terminal adapter 10, and the rear end of the piston rod 40 is provided with rear end connection
Device 20.The first buffering oil circuit 411 and second that L-type is provided on the piston 4 buffers oil circuit 412.
The Single port of the first buffering oil circuit 411 connect with cylinder body 3 and is located at front end buffering oil circuit hole 93 same
On one shaft section, the another port of the first buffering oil circuit 411 is located between third wear ring sealing ring 62 and rear end cap 2 simultaneously
It is connected to inner cavity 30.When piston 4 moves to 3 front end of cylinder body, front end oil nozzle 81 buffers oil circuit hole 93 and first by front end and delays
Oil circuit 411 is rushed to be connected to inner cavity 30；When piston motion to 3 rear end of cylinder body, front end oil nozzle 81 buffers oil circuit hole 93 by front end
It is connected to inner cavity 30.
The Single port of the second buffering oil circuit 412 connect with cylinder body 3 and is located at rear end buffering oil circuit hole 94 same
On one shaft section, it is described second buffering oil circuit 412 another port between the first wear ring sealing ring 60 and drive end bearing bracket 1 simultaneously
It is connected to inner cavity 30.When piston 4 moves to 3 front end of cylinder body, rear end oil nozzle 82 buffers oil circuit hole 94 and inner cavity 30 by rear end
Connection；When piston 4 moves to 3 rear end of cylinder body, rear end oil nozzle 82 buffers oil circuit hole 94 and the second buffering oil circuit hole by rear end
412 are connected to inner cavity 30.
The rear end cap 2 is provided with rear end O-ring seals 5, the inside of the piston 4 and piston rod with 3 contact position of cylinder body
40 junctions are provided with front end O-ring seals 42.
The front end oil nozzle 81 and rear end oil nozzle 82 welded on cylinder body 3, one is oil inlet, and one is oil outlet.Front end oil
Mouth 81 and rear end oil nozzle 82 are a hollow cylinders, are welded on cylinder body 3, and 40 surface of piston rod is equipped with hard chromium, described
The endoporus of contact is coordinated to be equipped with seal assembly or sealing ring between piston 4, rear end cap 2 and piston rod 40, to form one
Small confined space.The hydraulic station of equipment or engineering machinery provides endlessly rated oil pressure and passes through oil nozzle to oil cylinder, oil pressure
Cylinder block 3 is flowed to, the first steel ball 91 and the second steel ball 92 serve as trimmer valve, and in the case of oil pressure and dead weight, steel ball is close to
Casing wall simultaneously forms sealing, and for oil cylinder under the driving of oil pressure, piston 4 forward extends out movement or backward retraction movement, when piston 4 moves
When more than two front end oil circuit cushion holes 93 or rear end oil circuit cushion hole 94, the pressure of oil cylinder is delayed by what piston 4 was arranged above
It rushes oil circuit oil pressure pressure is transduceed to steel ball, steel ball is under the effect of the pressure, automatic to rise, and detaches with casing wall, and oil pressure is logical at this time
Cross front end buffering oil circuit hole and bidirectional buffering oil circuit hole form a circuit, moment by 5 ~ 12Mpa under the pressure drop in cylinder, due to
In-cylinder pressure declines, and cylinder movement will become slow, and realize the buffering effect of oil cylinder.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (8)
1. a kind of reliable bidirectional buffering hydraulic cylinder, including cylinder body（3）, be located at cylinder body（3）Inner cavity（30）Interior piston rod and
Piston（4）, it is characterised in that：
The cylinder body（3）Front end be provided with drive end bearing bracket（1）, the cylinder body（3）Rear end linking have rear end cap（2）, the cylinder
Body（3）Front end oil nozzle is connected on the casing wall of front end（81）, the cylinder body（3）Rear end oil nozzle is connected on the casing wall of rear end
（82）；
The drive end bearing bracket（1）Outside be provided with preceding terminal adapter（10）, the piston rod（40）Rear end be provided with rear end company
Connect device（20）, the rear end cap（2）On be provided with for piston rod（40）The through-hole passed through；
The piston（4）On be provided with forward end seal component, the rear end cap（2）It is close that the contact position of piston rod is provided with rear end
Sealing assembly；
The front end oil nozzle（81）With cylinder body（3）Junction is placed with the first steel ball（91）, the rear end oil nozzle（82）With cylinder body
（3）Junction is placed with the second steel ball（92）；
The cylinder body（3）With front end oil nozzle（81）Junction be provided with front end working connection hole（95）With front end buffering oil circuit hole
（93）, the front end oil nozzle（81）It is interior to be equipped with connection front end working connection hole（95）With front end buffering oil circuit hole（93）The first access
（83）, first steel ball（91）It is placed on first access（83）It is interior；
The cylinder body（3）With rear end oil nozzle（82）Junction be provided with rear end working connection hole（96）With rear end buffering oil circuit hole
（94）, the rear end oil nozzle（82）It is interior to be equipped with connection rear end working connection hole（96）With rear end buffering oil circuit hole（94）Alternate path
（84）, second steel ball（92）It is placed on the alternate path（84）It is interior.
2. reliable bidirectional buffering hydraulic cylinder according to claim 1, it is characterised in that：The piston（4）On be provided with L
First buffering oil circuit of type（411）With the second buffering oil circuit（412）；
The first buffering oil circuit（411）Single port and cylinder body（3）It connects and buffers oil circuit hole with the front end（93）It is located at
On same shaft section, the first buffering oil circuit（411）Another port be located at forward end seal component and rear end cap（2）Between simultaneously
With inner cavity（30）Connection；
The second buffering oil circuit（412）Single port and cylinder body（3）It connects and buffers oil circuit hole with the rear end（94）It is located at
On same shaft section, the second buffering oil circuit（412）Another port be located at forward end seal component and drive end bearing bracket（1）Between simultaneously
With inner cavity（30）Connection.
3. reliable bidirectional buffering hydraulic cylinder according to claim 2, it is characterised in that：The forward end seal component is nested
It is sequentially the first wear ring sealing ring from front to back on piston（60）, the second sealing ring（61）With third wear ring sealing ring
（62）, the first wear ring sealing ring（60）With the second sealing ring（61）Between have the first buffering oil circuit（411）Outlet.
4. reliable bidirectional buffering hydraulic cylinder according to claim 3, it is characterised in that：The back-end sealing component is nested
In rear end cap（2）On, it is sequentially U-shaped sealing ring from front to back（70）And dust-proof seal ring（71）.
5. reliable bidirectional buffering hydraulic cylinder according to claim 4, it is characterised in that：The rear end cap（2）Pass through card
Spring（21）And limited block（22）With cylinder body（3）Inner wall is connected.
6. the reliable bidirectional buffering hydraulic cylinder according to claim any one of 1-5, it is characterised in that：The piston
（4）Pass through screw thread（43）With piston rod（40）It is fixedly connected.
7. reliable bidirectional buffering hydraulic cylinder according to claim 6, it is characterised in that：First steel ball（91）With
Two steel balls（92）There are two respectively, front end buffering oil circuit hole（93）With rear end buffering oil circuit hole（94）There are two respectively.
8. reliable bidirectional buffering hydraulic cylinder according to claim 7, it is characterised in that：The rear end cap（2）With cylinder body
（3）Contact position is provided with rear end O-ring seals（5）, the piston（4）Inside and piston rod（40）Junction is provided with front end
O-ring seals（42）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721493332.3U CN207830259U (en) | 2017-11-10 | 2017-11-10 | A kind of reliable bidirectional buffering hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721493332.3U CN207830259U (en) | 2017-11-10 | 2017-11-10 | A kind of reliable bidirectional buffering hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207830259U true CN207830259U (en) | 2018-09-07 |
Family
ID=63385527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721493332.3U Expired - Fee Related CN207830259U (en) | 2017-11-10 | 2017-11-10 | A kind of reliable bidirectional buffering hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207830259U (en) |
-
2017
- 2017-11-10 CN CN201721493332.3U patent/CN207830259U/en not_active Expired - Fee Related
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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: 20180907 Termination date: 20191110 |