CN206035937U - Floating piston rod gas -liquid damping cylinder - Google Patents
Floating piston rod gas -liquid damping cylinder Download PDFInfo
- Publication number
- CN206035937U CN206035937U CN201621008816.XU CN201621008816U CN206035937U CN 206035937 U CN206035937 U CN 206035937U CN 201621008816 U CN201621008816 U CN 201621008816U CN 206035937 U CN206035937 U CN 206035937U
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- piston
- cylinder body
- cylinder
- piston rod
- cap
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Abstract
The utility model discloses a floating piston rod gas -liquid damping cylinder, including lid cover, cylinder cap, first cylinder body, second cylinder body and piston rod, be equipped with first piston in the first cylinder body, be equipped with the second piston in the second cylinder body, form hydraulic oil cavity between first piston and the second piston, be equipped with hydraulic oil damping hole between first cylinder body and the second cylinder body, be equipped with the die cavity in the first piston, the lower extreme of first piston is connected with the plug, and it is provided with the screw of being connected with the piston rod to float in the die cavity. The utility model discloses a parts processing and the higher problem of assembly costs under the high accuracy condition are solved to floating piston rod technique, and the gas -liquid fits who adopts compressed gas to provide drive power and hydraulic oil and provide the damping force guarantees that the piston rod is flexible gently, uses safe and reliable.
Description
Technical field
This utility model is related 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 in cylinder body using compressed gas-driven piston, then by piston
Drive piston rod driving load reciprocating action.In some use environments, it is desirable to which piston rod keeps gentle operation in telescopic process,
And existing cylinder easily stretches to piston rod because compressed gas source pressure reduction changes and causes disturbance, especially stretch in operation piston rod
In compression process, if compressed gas rapid decompression in cylinder body, piston rod meeting Rapid reset under load effect, such case most hold
Unexpected accident is easily caused, existing cylinder another problem is that assembly precision problem, cylinder body, piston, piston rod and end cap
Concentric fits are required, for current processing technique, 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 for the very high product of some required precisions is processed, yield is relatively low, cost compared with
It is high.
Utility model content
The purpose of this utility model is for the deficiencies in the prior art, there is provided a kind of floating piston bar gas-liquid damps gas
Cylinder, under the conditions of being solved the problems, such as in high precision using floating piston pole technology, component processing and assembly cost are higher, using compression
Gas provides driving force and the gas-liquid matched mode of hydraulic oil offer damping force ensures that piston rod gently stretches, can using safety
Lean on.
For solving the above problems, this utility model provides technical scheme below：
A kind of floating piston bar gas-liquid damping cylinder, including the lid for from top to bottom sequentially being 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, be provided with second piston in the second cylinder body, and first
Form hydraulic fluid chamber between piston and second piston, between the first cylinder body and the second cylinder body, be provided with hydraulic oil damping hole, cylinder cap with
Form the first air cavity between first piston, the first cylinder body is provided with the first pore communicated with the first air cavity, second piston and the
The second air cavity is formed between the bottom of two cylinder bodies, and the second cylinder body is provided with the second pore communicated with the second air cavity；Also include
Piston rod, is provided with the die cavity that section is inverted T-shaped in first piston, the lower end of first piston is connected with and the die cavity close fit
Plug, is floated in die cavity and is provided with the screw matched 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 the dust ring that coordinates with piston rod 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 is coordinated for lock piston bar with stopper slot, and stop pin is arranged on end cap by back-moving spring and lock nut, lock
Rationed marketing is offseted with the bar wall of piston rod under the resilient force of back-moving spring, when the stopper slot of piston rod is retractable to locking pins position
When putting, stop pin is sprung in stopper slot under the resilient force of back-moving spring, plays braking action so as to flexible to piston rod,
The limitation locking to piston rod is released by extracting stop pin.
Further, the first cylinder body or the second cylinder body are provided with the oil filler point communicated with hydraulic fluid chamber, by the oil filler point
Hydraulic oil can be injected into hydraulic fluid chamber, it is also possible to external fluid pressure drive device, first is driven using hydraulic coupling type of drive
Piston action, increases to piston rod driving force.
Further, between first piston and the first cylinder body and to be equipped with C-shaped 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, be provided with O-ring seals 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：This utility model adopts floating piston bar structure, i.e., arrange inverted T-shaped die cavity in first piston,
Load the screw of matched inverted T-shaped in die cavity, there is between screw and die cavity inwall flying height, so work as piston rod
After being fixedly connected with screw, piston rod has certain floating adjustment gap with respect to first piston, under the die cavity of first piston
End is sealed by plug, and this floating piston bar structure can be greatly reduced on the premise of equal accuracy requirement is reached
The processing of each build-up member and assembly difficulty, it is cost-effective；This utility model also provides driving force and hydraulic pressure using compressed gas
Oil provides the gas-liquid matched mode of damping force and ensures that piston rod gently stretches, when piston rod stretches out, the second pore of the second cylinder
Air inlet, the compressed gas of the second air cavity are acted on the pressure of second piston and are smoothly transferred to by the hydraulic oil in hydraulic fluid chamber
On first piston, using the incompressible characteristic of hydraulic oil, hydraulic oil produces damping force when by hydraulic damping hole, to ensure
Piston rod gently stretches, safe and reliable.
Description of the drawings
Fig. 1 is assembling structure schematic diagram of the present utility model；
Fig. 2 is polycrystalline substance schematic diagram of the present utility model；
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 pore；19th, hydraulic oil damping hole；20th, oil filler point；21st, the second gas
Hole.
Specific embodiment
With reference to Figure of description and embodiment, specific embodiment of the utility model is described in further detail：
Shown in seeing figures.1.and.2, a kind of floating piston bar gas-liquid damping cylinder, including from top to bottom by interior hexagonal
Lid set 14, cylinder cap, the first cylinder body 6 and the second cylinder body 1 that screw 13 is sequentially concatenated, are provided with first piston 8 in 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 between first piston 8 and second piston 4, is formed
Hydraulic oil damping hole 19 is provided between body 1, the first air cavity is formed between cylinder cap and first piston 8, and the first cylinder body 6 is provided with and
The second air cavity is formed between the bottom of the first pore 18 that one air cavity is communicated, second piston 4 and the second cylinder body 1, on the second cylinder body 1
It is provided with the second pore 21 communicated with the second air cavity；Piston rod 15 is also included, and section is provided with first piston 8 for inverted T-shaped
Die cavity, the lower end of first piston 8 are connected with to float in the plug 7 with the die cavity close fit, die cavity and are provided with and the die cavity phase
The screw 10 of matching, the upper end of screw 10 are connected with the lower end of piston rod 15 after stretching out in first piston 8, the upper end of piston rod 15
Stretch out in lid set 14 through cylinder cap, in cylinder cap, be provided with the dust ring 12 and bushing 16 coordinated with piston rod 15.
Be equipped between first piston 8 and the first cylinder body 6 and between second piston 4 and the second cylinder body 1 C-shaped sealing ring and
Wear ring 2, each serves as sealing and wear-resisting effect.Between end cap 11 and the first cylinder body 6 and the first cylinder body 6 and the second cylinder body 1
Between be equipped with O-ring seals 3,5, be provided with O-ring seals 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 adopts 15 structure of floating piston bar, i.e., arrange in first piston 8
Load the screw 10 of matched inverted T-shaped in inverted T-shaped die cavity, die cavity, have between screw 10 and die cavity inwall between floating
Gap, so after piston rod 15 is fixedly connected with screw 10, between there is 15 relative first piston 8 of piston rod certain floating to adjust
Gap, is sealed by plug 7 in the die cavity lower end of first piston 8, and this 15 structure of floating piston bar is reaching equal essence
On the premise of degree is required, processing and the assembly difficulty of each build-up member can be greatly reduced, it is cost-effective.
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 is gentle flexible, when piston rod 15 stretches out, 21 air inlet of the second pore of the second cylinder, the
The compressed gas of two air cavitys act on the pressure of second piston 4 and are 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 produces damping force when by hydraulic damping hole 19, to ensure to live
Stopper rod 15 is gentle flexible, 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, by the note
Oilhole 20 can inject hydraulic oil into hydraulic fluid chamber, it is also possible to external fluid pressure drive device, be driven using hydraulic coupling type of drive
8 action of dynamic first piston, increases to 15 driving force of piston rod.
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 are coordinated for lock piston bar 15 with stopper slot, and stop pin 17 is set by back-moving spring and lock nut
It is placed on end cap 11, stop pin 17 is offseted with the bar wall of piston rod 15 under the resilient force of back-moving spring, when piston rod 15
Stopper slot when being retractable to 17 position of stop pin, stop pin 17 is sprung in stopper slot under the resilient force of back-moving spring, from
And the limitation locking for playing braking action, releasing to piston rod 15 by extracting stop pin 17 flexible to piston rod 15.
The above, is only preferred embodiment of the present utility model, not technical scope of the present utility model is taken the post as
What limits, therefore every any trickle amendment above example made according to technical spirit of the present utility model, equivalent variations
With modification, still fall within the range of the technical solution of the utility model.
Claims (6)
1. a kind of floating piston bar gas-liquid damping cylinder, it is characterised in that：Including from top to bottom by soket head cap screw sequentially
The lid set of concatenation, cylinder cap, the first cylinder body and the second cylinder body, are provided with first piston, are provided with second in the second cylinder body in the first cylinder body
Piston, forms hydraulic fluid chamber, is provided with hydraulic pressure oil damping between the first cylinder body and the second cylinder body between first piston and second piston
Hole, forms the first air cavity between cylinder cap and first piston, the first cylinder body is provided with the first pore communicated with the first air cavity, and second
The second air cavity is formed between the bottom of piston and the second cylinder body, and the second cylinder body is provided with the second pore communicated with the second air cavity；
Piston rod is also included, the die cavity that section is inverted T-shaped in first piston, is provided with, the lower end of first piston is connected with close with the die cavity
Close to float in the plug of cooperation, die cavity and be provided with the screw matched with the 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 cylinder cap and piston rod cooperation
Dust ring and bushing.
2. a kind of 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.
3. a kind of 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.
4. a kind of 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 is equipped between one cylinder body and between second piston and the second cylinder body.
5. a kind of 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, the sealing of O shapes between plug and first piston, is provided with
Circle.
6. a kind of 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 |
|---|---|---|---|
| CN201621008816.XU CN206035937U (en) | 2016-08-31 | 2016-08-31 | Floating piston rod gas -liquid damping cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621008816.XU CN206035937U (en) | 2016-08-31 | 2016-08-31 | Floating piston rod gas -liquid damping cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206035937U true CN206035937U (en) | 2017-03-22 |
Family
ID=58301067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621008816.XU Withdrawn - After Issue CN206035937U (en) | 2016-08-31 | 2016-08-31 | Floating piston rod gas -liquid damping cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206035937U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194887A (en) * | 2016-08-31 | 2016-12-07 | 奉化市鑫潮自动化元件有限公司 | A kind of floating piston bar gas-liquid damping cylinder |
| CN107191428A (en) * | 2017-05-25 | 2017-09-22 | 奉化市鑫潮自动化元件有限公司 | A kind of interior outer piston self-locking cylinder |
| CN108547827A (en) * | 2018-06-29 | 2018-09-18 | 北京精密机电控制设备研究所 | A kind of built-in gas-liquid mixed buffering retraction type high-speed cylinder |
| CN110319069A (en) * | 2018-03-28 | 2019-10-11 | 肇庆市志成气动有限公司 | A kind of gas-liquid damping cylinder |
-
2016
- 2016-08-31 CN CN201621008816.XU patent/CN206035937U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194887A (en) * | 2016-08-31 | 2016-12-07 | 奉化市鑫潮自动化元件有限公司 | A kind of floating piston bar gas-liquid damping cylinder |
| CN106194887B (en) * | 2016-08-31 | 2018-01-09 | 宁波市鑫潮自动化元件有限公司 | A kind of floating piston bar gas-liquid damping cylinder |
| CN107191428A (en) * | 2017-05-25 | 2017-09-22 | 奉化市鑫潮自动化元件有限公司 | A kind of interior outer piston self-locking cylinder |
| CN110319069A (en) * | 2018-03-28 | 2019-10-11 | 肇庆市志成气动有限公司 | A kind of gas-liquid damping cylinder |
| CN108547827A (en) * | 2018-06-29 | 2018-09-18 | 北京精密机电控制设备研究所 | A kind of built-in gas-liquid mixed buffering retraction type high-speed cylinder |
| CN108547827B (en) * | 2018-06-29 | 2020-04-10 | 北京精密机电控制设备研究所 | Built-in gas-liquid mixing buffering retraction type high-speed cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170322 Effective date of abandoning: 20180109 |