CN108561372A - Buffer structure and oil cylinder - Google Patents
Buffer structure and oil cylinder Download PDFInfo
- Publication number
- CN108561372A CN108561372A CN201810684771.5A CN201810684771A CN108561372A CN 108561372 A CN108561372 A CN 108561372A CN 201810684771 A CN201810684771 A CN 201810684771A CN 108561372 A CN108561372 A CN 108561372A
- Authority
- CN
- China
- Prior art keywords
- channel
- piston
- core assembly
- oil pocket
- buffer structure
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/224—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston which closes off fluid outlets in the cylinder bore by its own movement
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Damping Devices (AREA)
- Actuator (AREA)
Abstract
The invention discloses a kind of buffer structures, including cylinder barrel, the cylinder bottom being arranged on cylinder barrel, the piston of the piston rod and installation being movably arranged in cylinder barrel on the piston rod, cylinder barrel is divided into the first oil pocket and the second oil pocket by the piston, the cylinder bottom is located on the right side of piston, being equipped in the piston has multiple channels, it is correspondingly provided with core assembly in the channel, the both ends of the core assembly stretch out in channel both ends, the piston rod makes core assembly contact with the opening portion in channel to form sealing surface to disconnect the first oil pocket and the second oil pocket or making core assembly detach with the end in channel makes the first oil pocket and the second oil pocket be connected to piston movement.A kind of hydraulic cylinder, including above-mentioned buffer structure.By the above-mentioned means, buffer structure of the present invention and oil cylinder, can save space simultaneously to piston into row buffering, protect Hydraulic Elements, it is ensured that whole stabilization.
Description
Technical field
The present invention relates to oil cylinder fields, more particularly to a kind of buffer structure and hydraulic cylinder.
Background technology
Existing buffer structure is that change adjusts buffer gap or increases flat filament angle, or allows pressure by variable cross-section mode
Power increases, and generates back pressure and plays the role of buffering, and this mode is only capable of single direction and works as a buffer, simultaneously for buffering
Area's means suitable is higher, also needs test compensator or trimmer pressure, excessively high and damage oil cylinder to prevent compensator or trimmer pressure.
Invention content
The invention mainly solves the technical problem of providing a kind of buffer structure and oil cylinders, can save space simultaneously to work
Row buffering is filled in, protects Hydraulic Elements, it is ensured that whole stability.
In order to solve the above technical problems, one aspect of the present invention is：A kind of buffer structure, including cylinder are provided
Cylinder, the cylinder bottom being arranged on cylinder barrel, the piston of the piston rod being movably arranged in cylinder barrel and installation on the piston rod, the piston
Cylinder barrel is divided into the first oil pocket and the second oil pocket, the cylinder bottom is located on the right side of piston, and being equipped in the piston has multiple channels,
Core assembly is correspondingly provided in the channel, the both ends of the core assembly stretch out in channel both ends, and the piston rod, which drives, lives
Plug movement makes core assembly contact to form sealing surface to disconnect the first oil pocket and the second oil pocket or make valve with the opening portion in channel
Core assembly is detached with the end in channel makes the first oil pocket and the second oil pocket be connected to.
In a preferred embodiment of the present invention, the left and right end of the core assembly stretches out in the outside in channel, and
Contact, which is matched, with the opening portion in channel forms annular sealing surface.
In a preferred embodiment of the present invention, the left and right end of the core assembly and the opening at left and right sides of channel
Inclined surface is all had in portion makes the two be in contact to form annular sealing surface.
In a preferred embodiment of the present invention, the core assembly is located on the left of cylinder bottom, and the piston movement makes spool
The left part and the opening portion on the left of channel of component contact to form annular sealing surface, the core assembly by piston promotion make its with
End face is contacted with stop motion, and piston, which continues movement, makes the opening portion on the left part of core assembly and the channel left side from making first
Oil pocket fluid enters the second oil pocket by channel makes the second oil pocket pressure rise make piston into row buffering, until piston connects with cylinder bottom
Touching makes the right part of core assembly contact to form annular sealing surface with the opening portion on the right of channel.
In a preferred embodiment of the present invention, the core assembly is oppositely arranged connection composition including two spools.
In a preferred embodiment of the present invention, the core assembly includes that insert body and pedestal are integrally formed component,
The outer diameter of the insert body is slightly less than the internal diameter in channel, and the outer diameter of the pedestal is more than the outer diameter of the opening portion in channel, described
Inclined surface is opened on pedestal.
In a preferred embodiment of the present invention, the quantity in the channel is 4, between the channel is in around the center of piston
Every being uniformly distributed.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of hydraulic cylinder is provided, including
Above-mentioned buffer structure.
The beneficial effects of the invention are as follows：Buffer structure and oil cylinder of the present invention can save space while delay to piston
Punching protects Hydraulic Elements, it is ensured that whole stability.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, wherein：
Fig. 1 is the structural schematic diagram of one preferred embodiment of buffer structure of the present invention；
Fig. 2 is another status diagram of the buffer structure of Fig. 1；
Fig. 3 is another status diagram of the buffer structure of Fig. 1；
Fig. 4 is the enlarged structure schematic diagram of Fig. 1；
Fig. 5 is the partial structural diagram of Fig. 1；
Fig. 6 is the partial structural diagram of Fig. 1；
Fig. 7 is the partial structural diagram of Fig. 1；
Fig. 8 is the structural schematic diagram of the hydraulic cylinder with buffer structure；
The label of each component is as follows in attached drawing：1, cylinder barrel, 2, cylinder bottom, 3, piston rod, 4, piston, 41, channel, 42, opening portion,
43, inclined surface, the 5, first oil pocket, the 6, second oil pocket, 7, core assembly, 71, spool, 711, insert body, 712, pedestal, 8, close
Cover.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
All other embodiment that technical staff is obtained without making creative work belongs to the model that the present invention protects
It encloses.
Please refer to Fig.1 to Fig. 7, a kind of buffer structure, including cylinder barrel 1, be arranged on cylinder barrel 1 cylinder bottom 2, be movably arranged at cylinder
Cylinder barrel is divided into the first oil pocket 5 and the second oil pocket 6 by piston rod 3 and the piston 4 on piston rod 3, piston 4 in cylinder 1,
Cylinder bottom 2 is located at 4 right side of piston, and being equipped in piston 4 has multiple channels 41, and core assembly 7, spool group are correspondingly provided in channel 41
The both ends of part 7 stretch out in 41 both ends of channel, and piston rod 3 makes core assembly 7 and the opening portion 42 in channel 41 connect with the movement of piston 4
It touches and forms sealing surface 8 and make the to disconnect the first oil pocket 5 and the second oil pocket 6 or core assembly 7 is made to detach with the end in channel 41
One oil pocket 5 is connected to the second oil pocket 6.
In addition, the left and right end of core assembly 7 stretches out in the outside in channel 41, and with 42 phase of the opening portion in channel 41
Cooperation contact forms annular sealing surface.
In addition, all having inclined surface 43 on the opening portion 42 of 41 left and right sides of left and right end and channel of core assembly 7 makes
The two is in contact to form annular sealing surface.
In addition, core assembly 7 is located on the left of cylinder bottom, the movement of piston 4 makes the left part of core assembly 7 and opening on the left of channel
The contact of oral area 42 forms annular sealing surface, and core assembly 7 is made it contact with end face with stop motion by the promotion of piston 4, piston 4 after
Reforwarding is dynamic make the opening portion on the left part of core assembly 7 and 41 left side of channel from make 5 fluid of the first oil pocket pass through channel 41 into
Entering the second oil pocket 6 makes 6 pressure rise of the second oil pocket make piston 4 into row buffering, until piston 4 contacts with cylinder bottom 2 and makes core assembly 7
The opening portion 42 on 41 the right of right part and channel contact to form annular sealing surface.
In addition, core assembly 7 is oppositely arranged connection composition including two spools 71.
In addition, core assembly 7, which includes insert body 711 and pedestal 712, is integrally formed component, the outer diameter of insert body 711
It is slightly less than the internal diameter in channel 41, the outer diameter of pedestal 712 is more than the outer diameter of the opening portion 42 in channel 41, and inclined surface 43 is opened in pedestal
On 712.
In addition, the quantity in channel 41 is 4, channel is uniformly distributed around the center of piston 4 in interval.
Buffer structure concrete operating principle of the present invention is as follows：When hydraulic oil is transported to the first oil pocket 5, piston 4 by hydraulic pump
Start to move right（See Fig. 1）, while spool 71 forms an annular sealing surface by killing on piston 4 tightly, prevents liquid
Pressure oil thence through, prevent in let out（See Fig. 4）, when reaching bottom soon, spool 71 first touches cylinder bottom 2 and stop motion（See
Fig. 2）, and piston 4 continues to move right at this time, at this moment the hydraulic oil of the first oil pocket 5 is released from spool（See Fig. 2）, the second oil
The pressure of chamber 6 rises, and plays cushioning effect（See Fig. 3）, it prevents that compression shock occurs in circuit, is depressurized in time for oil circuit,
It prevents high pressure liquid pressure oil from discharge of safety valve, protects Hydraulic Elements, while being also prevented from when piston 4 reaches bottom and occurring acutely to shake
It is dynamic.Vice versa.
Refering to Fig. 8, a kind of hydraulic cylinder, including above-mentioned buffer structure.
It is different from the prior art, buffer structure and oil cylinder of the present invention can solve routinely to design the inconvenience brought, avoid
Compression shock makes in-oil cylinder high pressure oil that can only flow to low-pressure side by spool, prevents that compression shock occurs in circuit, is in time
Oil circuit depressurizes, and is also prevented from high pressure liquid pressure oil from discharge of safety valve, protects Hydraulic Elements, is vibrated when being also prevented from arrival bottom,
Ensure whole stability.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (8)
1. a kind of buffer structure, including cylinder barrel, the cylinder bottom being arranged on cylinder barrel, the piston rod that is movably arranged in cylinder barrel and installation
Cylinder barrel is divided into the first oil pocket and the second oil pocket by piston on the piston rod, the piston, and the cylinder bottom is located on the right side of piston,
It is characterized in that, being equipped in the piston has multiple channels, and core assembly is correspondingly provided in the channel, the core assembly
Both ends stretch out in channel both ends, and the piston rod makes core assembly contact to form sealing with the opening portion in channel with piston movement
Face makes the first oil pocket and the second oil pocket to disconnect the first oil pocket and the second oil pocket or core assembly is made to be detached with the end in channel
Connection.
2. buffer structure according to claim 1, which is characterized in that the left and right end of the core assembly stretches out in logical
The outside in road, and match contact with the opening portion in channel and form annular sealing surface.
3. buffer structure according to claim 2, which is characterized in that the left and right end of the core assembly and channel are left
Inclined surface is all had on the opening portion of right both sides makes the two be in contact to form annular sealing surface.
4. buffer structure according to claim 3, which is characterized in that the core assembly is located on the left of cylinder bottom, the work
Plug movement makes the opening portion on the left of the left part and channel of core assembly contact to form annular sealing surface, and the core assembly is lived
Plug, which pushes, makes it be contacted with end face with stop motion, and piston continues the opening that movement makes the left part and the channel left side of core assembly
Part makes the second oil pocket pressure rise make piston into row buffering from making the first oil pocket fluid pass through channel into the second oil pocket, until
Piston is contacted with cylinder bottom makes the right part of core assembly contact to form annular sealing surface with the opening portion on the right of channel.
5. according to the buffer structure described in claim 3,4, which is characterized in that the core assembly, which includes that two spools are opposite, to be set
Set connection composition.
6. buffer structure according to claim 5, which is characterized in that the core assembly includes insert body and pedestal one
The outer diameter of body formed component, the insert body is slightly less than the internal diameter in channel, and the outer diameter of the pedestal is more than the opening portion in channel
Outer diameter, the inclined surface is opened on pedestal.
7. according to claim 1-4,6 any buffer structures, which is characterized in that the quantity in the channel is 4, described
Channel is uniformly distributed around the center of piston in interval.
8. a kind of hydraulic cylinder, which is characterized in that including any buffer structures of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810684771.5A CN108561372A (en) | 2018-06-28 | 2018-06-28 | Buffer structure and oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810684771.5A CN108561372A (en) | 2018-06-28 | 2018-06-28 | Buffer structure and oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108561372A true CN108561372A (en) | 2018-09-21 |
Family
ID=63554820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810684771.5A Pending CN108561372A (en) | 2018-06-28 | 2018-06-28 | Buffer structure and oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108561372A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3654834A (en) * | 1970-05-27 | 1972-04-11 | Cascade Corp | Fluid bypass valve |
| CN201810608U (en) * | 2010-09-20 | 2011-04-27 | 三一重工股份有限公司 | Hydrocylinder with buffer function, hydraulic system and reciprocating driving mechanism |
| CN204164085U (en) * | 2014-09-23 | 2015-02-18 | 广州科技职业技术学院 | Relief arrangement in a kind of cylinder of novel piston oil hydraulic cylinder |
| CN205371147U (en) * | 2016-03-11 | 2016-07-06 | 合肥力恒液压系统有限公司 | From off -load formula hydro -cylinder |
| CN206682077U (en) * | 2017-03-23 | 2017-11-28 | 天津鹰格尔液压缸有限公司 | Hydraulic cylinder |
| WO2018030014A1 (en) * | 2016-08-10 | 2018-02-15 | Smc株式会社 | Method for producing piston assembly and hydraulic fluid device |
-
2018
- 2018-06-28 CN CN201810684771.5A patent/CN108561372A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3654834A (en) * | 1970-05-27 | 1972-04-11 | Cascade Corp | Fluid bypass valve |
| CN201810608U (en) * | 2010-09-20 | 2011-04-27 | 三一重工股份有限公司 | Hydrocylinder with buffer function, hydraulic system and reciprocating driving mechanism |
| CN204164085U (en) * | 2014-09-23 | 2015-02-18 | 广州科技职业技术学院 | Relief arrangement in a kind of cylinder of novel piston oil hydraulic cylinder |
| CN205371147U (en) * | 2016-03-11 | 2016-07-06 | 合肥力恒液压系统有限公司 | From off -load formula hydro -cylinder |
| WO2018030014A1 (en) * | 2016-08-10 | 2018-02-15 | Smc株式会社 | Method for producing piston assembly and hydraulic fluid device |
| CN206682077U (en) * | 2017-03-23 | 2017-11-28 | 天津鹰格尔液压缸有限公司 | Hydraulic cylinder |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180921 |