CN106194887B - A kind of floating piston bar gas-liquid damping cylinder - Google Patents
A kind of floating piston bar gas-liquid damping cylinder Download PDFInfo
- Publication number
- CN106194887B CN106194887B CN201610795848.7A CN201610795848A CN106194887B CN 106194887 B CN106194887 B CN 106194887B CN 201610795848 A CN201610795848 A CN 201610795848A CN 106194887 B CN106194887 B CN 106194887B
- Authority
- CN
- China
- Prior art keywords
- piston
- cylinder body
- cylinder
- piston rod
- cap
- 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.)
- Active
Links
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
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- 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
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a kind of floating piston bar gas-liquid damping cylinder, including lid set, cylinder cap, the first cylinder body, the second cylinder body and piston rod, first piston is provided with first cylinder body, second piston is provided with second cylinder body, hydraulic fluid chamber is formed between first piston and second piston, hydraulic oil damping hole is provided between the first cylinder body and the second cylinder body；Die cavity is provided with first piston, the lower end of first piston is connected with plug, and float the screw for being provided with and being connected with piston rod in die cavity.The present invention solves the problems, such as that component processing and assembly cost are higher under the conditions of high accuracy using floating piston pole technology, and the gas-liquid matched mode using compressed gas offer driving force and hydraulic oil offer damping force ensures that piston rod gently stretches, safe and reliable.
Description
Technical field
The present invention relates to cylinder technical field, more particularly to a kind of floating piston bar gas-liquid damping cylinder.
Background technology
Cylinder is a kind of pneumatic apparatus, is moved back and forth using compressed gas-driven piston in cylinder body, then by piston
Drive piston rod driving load reciprocating action.In some use environments, it is desirable to piston rod keeps gentle operation in telescopic process,
And existing cylinder disturbs caused by easily being stretched because of the change of compressed gas source pressure difference to piston rod, especially stretched in operation piston rod
In compression process, if compressed gas rapid decompression in cylinder body, piston rod meeting Rapid reset, such case under load effect are most held
Unexpected accident is easily caused, existing cylinder is another problem is that assembly precision problem, cylinder body, piston, piston rod and end cap
It is required that concentric fits, for current processing technology, it is desirable to which the difficulty of processing ratio of four part concentric fits requires two portions
The difficulty of processing of part concentric fits is much higher, and the product very high for processing some required precisions, yield is relatively low, cost compared with
It is high.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to a kind of floating piston bar gas-liquid damping cylinder is provided,
Solve the problems, such as that component processing and assembly cost are higher under the conditions of high accuracy using floating piston pole technology, using compressed gas
The gas-liquid matched mode for providing driving force and hydraulic oil offer damping force ensures that piston rod gently stretches, safe and reliable.
To solve the above problems, the present invention provides following technical scheme：
A kind of floating piston bar gas-liquid damping cylinder, including the lid from top to bottom sequentially concatenated by soket head cap screw
Set, cylinder cap, the first cylinder body and the second cylinder body, are provided with first piston in the first cylinder body, and the second cylinder body is interior to be provided with second piston, and first
Hydraulic fluid chamber is formed between piston and second piston, is provided with hydraulic oil damping hole between the first cylinder body and the second cylinder body, cylinder cap with
Form the first air cavity between first piston, the first cylinder body is provided with the first stomata communicated with the first air cavity, second piston and the
The second air cavity is formed between the bottom of two cylinder bodies, the second cylinder body is provided with the second stomata communicated with the second air cavity；Also include
Piston rod, first piston is interior provided with the die cavity that section is inverted T-shaped, and the lower end of first piston is connected with and the die cavity close fit
Plug, float in die cavity the screw for being provided with and matching with the die cavity, the upper end of screw stretch out in after first piston with piston rod
Lower end connection, the upper end of piston rod stretched out in lid set through cylinder cap, be provided with cylinder cap with the dust ring of piston rod cooperation and
Bushing.
Further, piston rod is provided with least one stopper slot, and end cap is provided with the stop pin coordinated with the stopper slot,
Stop pin coordinates with stopper slot to be arranged on end cap for lock piston bar, stop pin by back-moving spring and lock nut, is locked
Rationed marketing offsets under the resilient force of back-moving spring with the bar wall of piston rod, when the stopper slot of piston rod is retractable to locking pins position
When putting, stop pin is sprung into stopper slot under the resilient force of back-moving spring, so as to play braking action to piston rod is flexible,
Extraction stop pin can release the limitation locking to piston rod.
Further, the first cylinder body or the second cylinder body are provided with the oil filler point communicated with hydraulic fluid chamber, pass through the oil filler point
Hydraulic oil can be injected into hydraulic fluid chamber, can also external fluid pressure drive device, using hydraulic coupling type of drive drive first
Piston action, increase to piston rod driving force.
Further, to be equipped with C-shaped between first piston and the first cylinder body and between second piston and the second cylinder body close
Seal and wear ring, each serve as sealing and wear-resisting effect.Between end cap and the first cylinder body and the first cylinder body and the second cylinder body
Between be equipped with O-ring seals, O-ring seals are provided between plug and first piston, play sealing function.End cap lower end is provided with
The bump protection ring coordinated with first piston, plays cushioning effect.
Beneficial effect：The present invention uses floating piston bar structure, i.e., inverted T-shaped die cavity, die cavity are set in first piston
The interior screw for loading matched inverted T-shaped, has flying height, so when piston rod and spiral shell between screw and die cavity inwall
After nail is fixedly connected, piston rod with respect to first piston there is certain floating to adjust gap, lead in the die cavity lower end of first piston
Cross plug to be sealed, each dress can be greatly reduced on the premise of equal accuracy requirement is reached in this floating piston bar structure
Processing and assembly difficulty with part, save cost；The present invention also provides driving force using compressed gas and hydraulic oil provides resistance
The gas-liquid matched mode of Buddhist nun's power ensures that piston rod gently stretches, when piston rod stretches out, the second stomata air inlet of the second cylinder, and second
The pressure that the compressed gas of air cavity acts on second piston is smoothly transferred to first piston by the hydraulic oil in hydraulic fluid chamber
On, using the incompressible characteristic of hydraulic oil, hydraulic oil during hydraulic damping hole by producing damping force, to ensure that piston rod is put down
It is slow flexible, it is safe and reliable.
Brief description of the drawings
Fig. 1 is the assembling structure schematic diagram of the present invention；
Fig. 2 is the polycrystalline substance schematic diagram of the present invention；
Description of reference numerals：1st, the second cylinder body；2nd, wear ring；3rd, 5, O-ring seals；4th, second piston；6th, the first cylinder body；
7th, plug；8th, first piston；9th, bump protection ring；10th, screw；11st, end cap；12nd, dust ring；13rd, soket head cap screw；14th, lid set；
15th, piston rod；16th, bushing；17th, stop pin；18th, the first stomata；19th, hydraulic oil damping hole；20th, oil filler point；21st, the second gas
Hole.
Embodiment
With reference to Figure of description and embodiment, the specific embodiment of the present invention is described in further detail：
It is shown referring to Figures 1 and 2, a kind of floating piston bar gas-liquid damping cylinder, including from top to bottom pass through interior hexagonal
The lid that screw 13 sequentially concatenates covers 14, cylinder cap, the first cylinder body 6 and the second cylinder body 1, and first piston 8 is provided with the first cylinder body 6, the
Second piston 4 is provided with two cylinder bodies 1, hydraulic fluid chamber, the first cylinder body 6 and the second cylinder are formed between first piston 8 and second piston 4
Hydraulic oil damping hole 19 is provided between body 1, forms the first air cavity between cylinder cap and first piston 8, the first cylinder body 6 is provided with and the
The first stomata 18 that one air cavity communicates, forms the second air cavity between the bottom of the cylinder body 1 of second piston 4 and second, on the second cylinder body 1
Provided with the second stomata 21 communicated with the second air cavity；Also include piston rod 15, section is provided with first piston 8 as inverted T-shaped
Die cavity, the lower end of first piston 8 is connected with to be provided with and the die cavity phase with the plug of the die cavity close fit 7, interior float of die cavity
The screw 10 of matching, the upper end of screw 10 are connected after stretching out in first piston 8 with the lower end of piston rod 15, the upper end of piston rod 15
Stretched out in through cylinder cap in lid set 14, the dust ring 12 and bushing 16 coordinated with piston rod 15 is provided with cylinder cap.
Be equipped between the cylinder body 6 of first piston 8 and first and between the cylinder body 1 of second piston 4 and second C-shaped sealing ring and
Wear ring 2, each serve as sealing and wear-resisting effect.Between the cylinder body 6 of end cap 11 and first and the first cylinder body 6 and the second cylinder body 1
Between be equipped with O-ring seals 3,5, O-ring seals are provided between plug 7 and first piston 8, play sealing function.End cap 11
Lower end is provided with the bump protection ring 9 coordinated with first piston 8, plays cushioning effect.
This floating piston bar gas-liquid damping cylinder uses the structure of floating piston bar 15, i.e., is set in first piston 8
Inverted T-shaped die cavity, the interior screw 10 for loading matched inverted T-shaped of die cavity, has between screw 10 and die cavity inwall between floating
Gap, so after piston rod 15 is fixedly connected with screw 10, piston rod 15 has with respect to first piston 8 between certain floating adjustment
Gap, sealed in the die cavity lower end of first piston 8 by plug 7, this structure of floating piston bar 15 is reaching equal essence
On the premise of degree requires, processing and the assembly difficulty of each build-up member can be greatly reduced, save cost.
This floating piston bar gas-liquid damping cylinder also provides driving force using compressed gas and hydraulic oil provides damping force
Gas-liquid matched mode ensure that piston rod 15 gently stretches, when piston rod 15 stretches out, the air inlet of the second stomata 21 of the second cylinder, the
The pressure that the compressed gas of two air cavitys acts on second piston 4 is smoothly transferred to the first work by the hydraulic oil in hydraulic fluid chamber
On plug 8, using the incompressible characteristic of hydraulic oil, hydraulic oil during hydraulic damping hole 19 by producing damping force, to ensure to live
Stopper rod 15 gently stretches, safe and reliable.
Further, the first cylinder body 6 or the second cylinder body 1 are provided with the oil filler point 20 communicated with hydraulic fluid chamber, pass through the note
Oilhole 20 can inject hydraulic oil into hydraulic fluid chamber, can also external fluid pressure drive device, using hydraulic coupling type of drive drive
Dynamic first piston 8 acts, and increases to the driving force of piston rod 15.
Further, piston rod 15 is provided with least one stopper slot, and end cap 11 is provided with the lock coordinated with the stopper slot
Rationed marketing 17, stop pin 17 coordinates with stopper slot to be set for lock piston bar 15, stop pin 17 by back-moving spring and lock nut
It is placed on end cap 11, stop pin 17 offsets under the resilient force of back-moving spring with the bar wall of piston rod 15, when piston rod 15
Stopper slot when being retractable to 17 position of stop pin, stop pin 17 is sprung into stopper slot under the resilient force of back-moving spring, from
And braking action is played to piston rod 15 is flexible, extraction stop pin 17 can release the limitation locking to piston rod 15.
It is described above, only it is presently preferred embodiments of the present invention, any restrictions not is made to the technical scope of the present invention, therefore
Any subtle modifications, equivalent variations and modifications that every technical spirit according to the present invention is made to above example, still belong to
In the range of technical scheme.
Claims (6)
- A kind of 1. floating piston bar gas-liquid damping cylinder, it is characterised in that：Including from top to bottom by soket head cap screw sequentially Lid set, cylinder cap, the first cylinder body and the second cylinder body of concatenation, the first cylinder body is interior to be provided with first piston, and second is provided with the second cylinder body Piston, hydraulic fluid chamber is formed between first piston and second piston, hydraulic pressure oil damping is provided between the first cylinder body and the second cylinder body Hole, forms the first air cavity between cylinder cap and first piston, the first cylinder body is provided with the first stomata communicated with the first air cavity, and second The second air cavity is formed between the bottom of piston and the second cylinder body, the second cylinder body is provided with the second stomata communicated with the second air cavity； Also include piston rod, provided with the die cavity that section is inverted T-shaped in first piston, the lower end of first piston is connected with close with the die cavity Close the plug of cooperation, float the screw for being provided with and matching with the die cavity in die cavity, after the upper end of screw stretches out in first piston It is connected with the lower end of piston rod, the upper end of piston rod is stretched out in lid set through cylinder cap, is provided with what is coordinated with piston rod in cylinder cap Dust ring and bushing.
- A kind of 2. floating piston bar gas-liquid damping cylinder according to claim 1, it is characterised in that：Piston rod is provided with At least one stopper slot, end cap are provided with the stop pin coordinated with the stopper slot.
- A kind of 3. floating piston bar gas-liquid damping cylinder according to claim 1, it is characterised in that：First cylinder body or Two cylinder bodies are provided with the oil filler point communicated with hydraulic fluid chamber.
- A kind of 4. floating piston bar gas-liquid damping cylinder according to claim 1, it is characterised in that：First piston and C-shaped sealing ring and wear ring are equipped between one cylinder body and between second piston and the second cylinder body.
- A kind of 5. floating piston bar gas-liquid damping cylinder according to claim 1, it is characterised in that：End cap and the first cylinder O-ring seals are equipped between body and between the first cylinder body and the second cylinder body, O shapes are provided between plug and first piston and are sealed Circle.
- A kind of 6. floating piston bar gas-liquid damping cylinder according to claim 1, it is characterised in that：End cap lower end is provided with The bump protection ring coordinated with first piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795848.7A CN106194887B (en) | 2016-08-31 | 2016-08-31 | A kind of floating piston bar gas-liquid damping cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795848.7A CN106194887B (en) | 2016-08-31 | 2016-08-31 | A kind of floating piston bar gas-liquid damping cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106194887A CN106194887A (en) | 2016-12-07 |
| CN106194887B true CN106194887B (en) | 2018-01-09 |
Family
ID=58086891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610795848.7A Active CN106194887B (en) | 2016-08-31 | 2016-08-31 | A kind of floating piston bar gas-liquid damping cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106194887B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2542182B2 (en) * | 1975-09-22 | 1979-05-03 | Georg Fritzmeier Kg, 8011 Grosshelfendorf | Adjustment device for vehicle seats supported by means of a spring element on a support frame assigned to the vehicle body |
| CN1049548A (en) * | 1989-08-17 | 1991-02-27 | 国营江南机器厂 | Liquid-resistance dynamic sealing device |
| CN202114453U (en) * | 2011-05-21 | 2012-01-18 | 广东威灵电机制造有限公司 | Press-in machine |
| CN103410805A (en) * | 2013-08-26 | 2013-11-27 | 嘉兴新中南汽车零部件有限公司 | Floating one-way double-rod air cylinder |
| CN204061401U (en) * | 2014-07-10 | 2014-12-31 | 绍兴县精致机械制造有限公司 | For the hydraulic jack of air assistor |
| CN204300344U (en) * | 2014-10-30 | 2015-04-29 | 蚌埠市行星工程机械有限公司 | A kind of floating connection mechanism of hydraulic cylinder piston rod |
| CN206035937U (en) * | 2016-08-31 | 2017-03-22 | 奉化市鑫潮自动化元件有限公司 | Floating piston rod gas -liquid damping cylinder |
-
2016
- 2016-08-31 CN CN201610795848.7A patent/CN106194887B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2542182B2 (en) * | 1975-09-22 | 1979-05-03 | Georg Fritzmeier Kg, 8011 Grosshelfendorf | Adjustment device for vehicle seats supported by means of a spring element on a support frame assigned to the vehicle body |
| CN1049548A (en) * | 1989-08-17 | 1991-02-27 | 国营江南机器厂 | Liquid-resistance dynamic sealing device |
| CN202114453U (en) * | 2011-05-21 | 2012-01-18 | 广东威灵电机制造有限公司 | Press-in machine |
| CN103410805A (en) * | 2013-08-26 | 2013-11-27 | 嘉兴新中南汽车零部件有限公司 | Floating one-way double-rod air cylinder |
| CN204061401U (en) * | 2014-07-10 | 2014-12-31 | 绍兴县精致机械制造有限公司 | For the hydraulic jack of air assistor |
| CN204300344U (en) * | 2014-10-30 | 2015-04-29 | 蚌埠市行星工程机械有限公司 | A kind of floating connection mechanism of hydraulic cylinder piston rod |
| CN206035937U (en) * | 2016-08-31 | 2017-03-22 | 奉化市鑫潮自动化元件有限公司 | Floating piston rod gas -liquid damping cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106194887A (en) | 2016-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107701639B (en) | Twin-tub controllable gas spring | |
| CN206035937U (en) | Floating piston rod gas -liquid damping cylinder | |
| CN104044098B (en) | High pressure sealing nitrogen spring lever binding clasp | |
| CN203868219U (en) | Hydro-pneumatic spring with multiple levels of compressible piston rods | |
| CN103899775B (en) | Hydraulic self-locking kingston valve | |
| CN106194887B (en) | A kind of floating piston bar gas-liquid damping cylinder | |
| CN206054437U (en) | A kind of stroke is adjustable compact cylinder | |
| CN2835699Y (en) | Hydro-pneumatic buffer | |
| CN206054436U (en) | A kind of stroke adjustable dual-head cylinder | |
| CN212272716U (en) | Two-stage pressurizing hydraulic cylinder | |
| CN203297727U (en) | Stop valve | |
| KR20110070111A (en) | Tensionable Gas Spring | |
| CN207093642U (en) | The overtravel protector and nitrogen spring of nitrogen spring | |
| CN207195354U (en) | A kind of multipurpose numerical control hydraulic oil cylinder | |
| CN207064380U (en) | Double rod single-action hydraulic cylinders | |
| CN104454759B (en) | Unpowered pressure maintaining push-pull cylinder and clamping device with unpowered pressure maintaining push-pull cylinder applied | |
| CN209687836U (en) | A kind of continuous milling machine has the single-action multi-stage oil cylinder of servo-actuated stroke | |
| CN207830272U (en) | The adjustable intelligent oil cylinder of clamping arm | |
| CN103591203A (en) | Damper | |
| CN201040139Y (en) | Pressure reducing stabilizing valve | |
| CN204253494U (en) | High speed and high pressure injection machine die cylinder | |
| CN207642289U (en) | A kind of dry powder product frame type hydraulic press is taken blame for others mechanism | |
| CN205465794U (en) | Tight ware pressure adjusting device of pressurization nitrogen spring lever clamp | |
| CN201866350U (en) | Multifunctional automatic pressure-reducing explosion-preventing valve inside | |
| CN202357491U (en) | Adjusting thread locking structure for sliding block |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 315500 Zhejiang province Ningbo City Xikou town Fenghua District Ao Industrial Park Applicant after: Ningbo Xinchao automation component Co., Ltd. Address before: Xikou Zhen Da Ao Industrial Zone Fenghua city Zhejiang province 315500 Lake Road, Ningbo City, No. 8 Applicant before: Fenghua Xinchao Automatization Component Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |