CN106194887A - 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
- CN106194887A CN106194887A CN201610795848.7A CN201610795848A CN106194887A CN 106194887 A CN106194887 A CN 106194887A CN 201610795848 A CN201610795848 A CN 201610795848A CN 106194887 A CN106194887 A CN 106194887A
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- CN
- China
- Prior art keywords
- piston
- cylinder body
- cylinder
- floating
- piston rod
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- 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.)
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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
- F15B15/08—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
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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)
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, it is provided with first piston in first cylinder body, the second piston it is provided with in second cylinder body, form hydraulic fluid chamber between first piston and the second piston, between the first cylinder body and the second cylinder body, be provided with hydraulic oil damping hole；Being provided with die cavity in first piston, the lower end of first piston connects plug, and floating in die cavity is provided with the screw being connected with piston rod.The present invention uses floating piston pole technology to solve component processing and the higher problem of assembly cost under the conditions of high accuracy, uses compressed gas to provide driving force and hydraulic oil to provide the gas-liquid matched mode of damping force to ensure that piston rod stretches gently, safe and reliable.
Description
Technical field
The present invention relates to cylinder technical field, particularly to a kind of floating piston bar gas-liquid damping cylinder.
Background technology
Cylinder is a kind of pneumatic apparatus, uses compressed gas-driven piston to move back and forth in cylinder body, then by piston
Piston rod is driven to drive load reciprocating action.Environment is used, it is desirable to piston rod keeps mild operation in telescopic process at some,
And existing cylinder easily causes disturbance because the change of compressed gas source pressure reduction to piston rod is flexible, especially stretch running piston rod
In compression process, if compressed gas rapid decompression in cylinder body, piston rod under load effect can Rapid reset, this situation is held most
Easily causing beyond thought accident, existing cylinder another problem is that assembly precision problem, cylinder body, piston, piston rod and end cap
Require concentric fits, for current processing technique, it is desirable to the difficulty of processing ratio of four parts concentric fits requires two portions
The difficulty of processing of part concentric fits is much higher, the product the highest for processing some required precisions, and yield is relatively low, and cost is relatively
High.
Summary of the invention
Present invention aims to the deficiencies in the prior art, it is provided that a kind of floating piston bar gas-liquid damping cylinder,
Use floating piston pole technology to solve component processing and the higher problem of assembly cost under the conditions of high accuracy, use compressed gas
Driving force and hydraulic oil is provided to provide the gas-liquid matched mode of damping force to ensure that piston rod stretches gently, safe and reliable.
For solving the problems referred to above, the present invention provides techniques below 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, be provided with first piston in the first cylinder body, is provided with the second piston in the second cylinder body, and first
Form hydraulic fluid chamber between piston and the second piston, between the first cylinder body and the second cylinder body, be provided with hydraulic oil damping hole, cylinder cap with
Forming the first air cavity between first piston, the first cylinder body is provided with the first pore communicated with the first air cavity, the second piston and
Forming the second air cavity between the bottom of two cylinder bodies, 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 cross section is inverted T-shaped in first piston, the lower end of first piston connects to be had and this die cavity close fit
Plug, floats in die cavity and is provided with the screw matched with this die cavity, the upper end of screw stretch out in after first piston with piston rod
Lower end connect, the upper end of piston rod through cylinder cap stretch out in lid set in, be provided with in cylinder cap the dust ring coordinated with piston rod and
Lining.
Further, piston rod is provided with at least one stopper slot, and end cap is provided with the stop pin coordinated with this stopper slot,
Stop pin coordinates with stopper slot for lock piston bar, and stop pin is arranged on end cap by back-moving spring and lock nut, lock
Rationed marketing bar wall with piston rod under the resilient force of back-moving spring offsets, when the stopper slot of piston rod is retractable to lock pins position
When putting, stop pin springs in stopper slot under the resilient force of back-moving spring, thus plays braking action to piston rod is flexible,
Extract stop pin and 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, by this oil filler point
Hydraulic oil can be injected in hydraulic fluid chamber, it is also possible to external fluid pressure drive device, use hydraulic coupling type of drive to drive first
Piston action, increases piston rod driving force.
Further, between first piston and the first cylinder body and it is equipped with C-shaped between the 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: the present invention uses floating piston bar structure, i.e. arranges inverted T-shaped die cavity, die cavity in first piston
The screw of the inverted T-shaped that interior loading is matched, has flying height between screw and die cavity inwall, so when piston rod and spiral shell
After the fixing connection of nail, piston rod has certain floating relative to first piston and adjusts gap, logical in the die cavity lower end of first piston
Crossing plug to seal, this floating piston bar structure, on the premise of reaching equal accuracy requirement, can be greatly reduced each dress
Join processing and the assembly difficulty of parts, cost-effective；The present invention also uses compressed gas to provide driving force and hydraulic oil to provide resistance
The gas-liquid matched mode of Buddhist nun's power ensures that piston rod stretches gently, when piston rod stretches out, and the second pore air inlet of the second cylinder, second
The compressed gas of air cavity acts on the pressure of the second piston and is smoothly transferred to first piston by the hydraulic oil in hydraulic fluid chamber
On, utilizing the incompressible characteristic of hydraulic oil, hydraulic oil produces damping force when by hydraulic damping hole, to ensure that piston rod is put down
Slow flexible, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the assembling structural representation of the present invention；
Fig. 2 is the polycrystalline substance schematic diagram of the present invention；
Description of reference numerals: 1, the second cylinder body；2, wear ring；3,5, O-ring seals；4, the second piston；6, the first cylinder body；
7, plug；8, first piston；9, bump protection ring；10, screw；11, end cap；12, dust ring；13, soket head cap screw；14, lid set；
15, piston rod；16, lining；17, stop pin；18, the first pore；19, hydraulic oil damping hole；20, oil filler point；21, the second gas
Hole.
Detailed description of the invention
Below in conjunction with Figure of description and embodiment, the specific embodiment of the present invention 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 that screw 13 sequentially concatenates set 14, cylinder cap, the first cylinder body 6 and the second cylinder body 1, be provided with first piston 8 in the first cylinder body 6, the
It is provided with the second piston 4 in two cylinder bodies 1, between first piston 8 and the second piston 4, forms hydraulic fluid chamber, the first cylinder body 6 and the second cylinder
Being provided with hydraulic oil damping hole 19 between body 1, form the first air cavity between cylinder cap and first piston 8, the first cylinder body 6 is provided with and the
The first pore 18 that one air cavity communicates, forms the second air cavity, on the second cylinder body 1 between the second piston 4 and the bottom of the second cylinder body 1
It is provided with the second pore 21 communicated with the second air cavity；Also including piston rod 15, being provided with cross section in first piston 8 is inverted T-shaped
Die cavity, the lower end of first piston 8 connects the plug 7 with this die cavity close fit, and floating in die cavity is provided with and this die cavity phase
The screw 10 of coupling, the upper end of screw 10 is 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 lining 16 coordinated with piston rod 15.
Be equipped with between first piston 8 and the first cylinder body 6 and between the 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 uses floating piston bar 15 structure, i.e. arranges in first piston 8
Inverted T-shaped die cavity, loads the screw 10 of matched inverted T-shaped, has between floating between screw 10 and die cavity inwall in die cavity
Gap, so when piston rod 15 and screw 10 is fixing is connected after, the relative first piston 8 of piston rod 15 has between certain floating adjustment
Gap, is sealed by plug 7 in the die cavity lower end of first piston 8, and this floating piston bar 15 structure is reaching equal essence
On the premise of degree requires, processing and the assembly difficulty of each build-up member can be greatly reduced, cost-effective.
This floating piston bar gas-liquid damping cylinder also uses compressed gas to provide driving force and hydraulic oil to provide damping force
Gas-liquid matched mode ensure that piston rod 15 stretches gently, when piston rod 15 stretches out, the second pore 21 air inlet of the second cylinder,
The compressed gas of two air cavitys acts on the pressure of the second piston 4 and is smoothly transferred to the first work by the hydraulic oil in hydraulic fluid chamber
On plug 8, utilizing the incompressible characteristic of hydraulic oil, hydraulic oil produces damping force when by hydraulic damping hole 19, to ensure to live
Stopper rod 15 stretches gently, 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 this note
Oilhole 20 can inject hydraulic oil in hydraulic fluid chamber, it is also possible to external fluid pressure drive device, uses hydraulic coupling type of drive to drive
Dynamic first piston 8 action, increases piston rod 15 driving force.
Further, piston rod 15 is provided with at least one stopper slot, and end cap 11 is provided with the lock coordinated with this stopper slot
Rationed marketing 17, stop pin 17 coordinates with stopper slot for lock piston bar 15, and stop pin 17 is set by back-moving spring and lock nut
Being placed on end cap 11, stop pin 17 bar wall with piston rod 15 under the resilient force of back-moving spring offsets, when piston rod 15
Stopper slot when being retractable to stop pin 17 position, stop pin 17 springs in stopper slot under the resilient force of back-moving spring, from
And play braking action to piston rod 15 is flexible, extract stop pin 17 and can release the limitation locking to piston rod 15.
The above, be only presently preferred embodiments of the present invention, and not the technical scope to the present invention makes any restriction, therefore
Every any trickle amendment, equivalent variations and modification made above example according to the technical spirit of the present invention, the most still belongs to
In the range of technical scheme.
Claims (6)
1. a floating piston bar gas-liquid damping cylinder, it is characterised in that: include from top to bottom by soket head cap screw sequentially
Lid set, cylinder cap, the first cylinder body and second cylinder body of concatenation, is provided with first piston in the first cylinder body, is provided with second in the second cylinder body
Piston, forms hydraulic fluid chamber between first piston and the second piston, be provided with hydraulic oil damping 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 pore communicated with the first air cavity, and second
Forming the second air cavity between the bottom of piston and the second cylinder body, the second cylinder body is provided with the second pore communicated with the second air cavity；
Also including piston rod, be provided with the die cavity that cross section is inverted T-shaped in first piston, the lower end connection of first piston has close with this die cavity
Closing the plug of cooperation, floating in die cavity is provided with the screw matched with this die cavity, after the upper end of screw stretches out in first piston
Being connected with the lower end of piston rod, the upper end of piston rod stretches out in lid set through cylinder cap, is provided with and coordinates with piston rod in cylinder cap
Dust ring and lining.
A kind of floating piston bar gas-liquid damping cylinder the most according to claim 1, it is characterised in that: piston rod is provided with
At least one stopper slot, end cap is provided with the stop pin coordinated with this stopper slot.
A kind of floating piston bar gas-liquid damping cylinder the most according to claim 1, it is characterised in that: the first cylinder body or the
Two cylinder bodies are provided with the oil filler point communicated with hydraulic fluid chamber.
A kind of floating piston bar gas-liquid damping cylinder the most according to claim 1, it is characterised in that: first piston and the
C-shaped sealing ring and wear ring it is equipped with between one cylinder body and between the second piston and the second cylinder body.
A kind of floating piston bar gas-liquid damping cylinder the most according to claim 1, it is characterised in that: end cap and the first cylinder
It is equipped with O-ring seals between body and between the first cylinder body and the second cylinder body, is provided with O shape between plug and first piston and seals
Circle.
A kind of floating piston bar gas-liquid damping cylinder the most 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 true CN106194887A (en) | 2016-12-07 |
| CN106194887B 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 |
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| Country | Link |
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| 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 |
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| Publication number | Publication date |
|---|---|
| CN106194887B (en) | 2018-01-09 |
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| 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. |
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