CN208870960U - The free gas spring of big stroke - Google Patents
The free gas spring of big stroke Download PDFInfo
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- CN208870960U CN208870960U CN201821308424.4U CN201821308424U CN208870960U CN 208870960 U CN208870960 U CN 208870960U CN 201821308424 U CN201821308424 U CN 201821308424U CN 208870960 U CN208870960 U CN 208870960U
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- piston
- cylinder barrel
- bar
- stage
- piston rod
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Abstract
The utility model relates to a kind of big free gas springs of stroke, including cylinder barrel, first stage piston bar, second piston rod, piston rod attachment and pigtail connection；It is filled with inert gas in cylinder barrel, and first stage piston bar and piston are installed, sets gradually separation sleeve, straight outside framework oil seal and guide sleeve between first stage piston bar and cylinder barrel from inside to outside；Sealing ring is set between piston and cylinder barrel；First stage piston bar is hollow structure, is filled with inert gas in rod cavity, and by piston seal；Installation second piston rod and piston, cylinder barrel of the first stage piston bar as second piston rod in first stage piston bar；Separation sleeve, straight outside framework oil seal and guide sleeve are set gradually between the inner wall and second piston rod of first stage piston bar from inside to outside, sealing ring is set between piston and the inner wall of first stage piston bar.The stroke of gas spring can be far longer than cylinder barrel length, and series more multiple-pass is bigger；Compressed center is little away from increasing, and stretches center away from that can increase very greatly, and compressing and stretching ratio is up to 2.5 times or more.
Description
Technical field
The utility model relates to gas spring fields, and in particular to a kind of safety, the free gas spring of big stroke of inert gas.
Background technique
Currently, gas spring is widely used in the multiple fields such as furniture, automobile, medical instrument, industrial automatic control, but
It is that the stroke of gas spring is limited by cylinder barrel length, haves the defects that stroke is less than cylinder barrel length, be not able to satisfy the market demand.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of free gas spring of big stroke, makes gas spring
Running length is much larger than the length of cylinder barrel, the big ratio that the minimum centers-distance and maximum distance between centers for meeting cylinder barrel and piston rod reach
Requirement, increase the stroke of gas spring.
The utility model is achieved through the following technical solutions: a kind of big free gas spring of stroke, including cylinder barrel, level-one
Piston rod, second piston rod, piston rod attachment and pigtail connection；It is filled with inert gas in the cylinder barrel, and level-one is installed
Piston rod and piston set gradually separation sleeve, straight outside framework oil seal and guide sleeve from inside to outside between first stage piston bar and cylinder barrel；Institute
It states and sealing ring is set between piston and cylinder barrel；The first stage piston bar is hollow structure, and rod cavity is interior filled with inert gas, and by
Piston seal；Installation second piston rod and piston, cylinder barrel of the first stage piston bar as second piston rod in the first stage piston bar；
Separation sleeve, straight outside framework oil seal and guide sleeve are set gradually between the inner wall and second piston rod of first stage piston bar from inside to outside, it is living
Sealing ring is set between plug and the inner wall of first stage piston bar.
The end of the second piston rod connects piston rod attachment, and the end of cylinder barrel connects pigtail connection.
Gap is respectively kept between the piston and separation sleeve.
The outer of the separation sleeve is circumferentially with groove, and slot rolling, the slot rolling and groove is arranged in the position of cylinder barrel respective slot
It coincide and fixes.
When the first stage piston bar and second piston rod are as cylinder barrel, circumferential setting slot rolling.
Sealing ring is respectively set between the first stage piston bar, second piston rod and guide sleeve.
Multistage can be arranged in the piston rod, respectively as the cylinder barrel of next stage piston rod, internal structure and first stage piston
Bar is identical；Afterbody piston rod is set as solid construction.
The beneficial effects of the utility model are: the stroke of gas spring can be far longer than cylinder barrel length, and series gets over multiple-pass
It is bigger；Compressed center is little away from increasing, and stretches center away from that can increase very greatly, and compressing and stretching ratio is up to 2.5 times or more.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the free gas spring of big stroke.
In figure, 1. cylinder barrels, 1-1. slot rolling, 2. first stage piston bars, 3. pistons, 4. second piston rods, 5. pistons, 6. piston rods
Connector, 7. pigtail connections, 8. separation sleeves, 8-1. groove, 9. straight outside framework oil seals, 10. guide sleeves, 11. sealing rings, 12. separation sleeves,
13. straight outside framework oil seal, 14. guide sleeves, 15. sealing rings.
Specific embodiment
As shown in Figure 1, a kind of free gas spring of big stroke, including cylinder barrel 1, first stage piston bar 2, second piston rod 4, piston
Knock-off joint 6 and pigtail connection 7；It is filled with inert gas in the cylinder barrel 1, and first stage piston bar 2 and piston 3, level-one are installed
Separation sleeve 8, straight outside framework oil seal 9 and guide sleeve 10 are set gradually between piston rod 2 and cylinder barrel 1 from inside to outside；The piston 3 and cylinder
Sealing ring is set between cylinder 1；The first stage piston bar 2 is hollow structure, is filled with inert gas in rod cavity, and close by piston 3
Envelope；Installation second piston rod 2 and piston 5 in the first stage piston bar 2, cylinder barrel of the first stage piston bar 2 as second piston rod 4；
Separation sleeve 12, straight outside framework oil seal 13 and guiding are set gradually between the inner wall and second piston rod 4 of first stage piston bar 2 from inside to outside
Set 14, is arranged sealing ring between piston 5 and the inner wall of first stage piston bar 2.
The end of the second piston rod 4 connects piston rod attachment 6, and the end of cylinder barrel 1 connects pigtail connection 7.
Gap is respectively kept between the piston 3,5 and separation sleeve 8,12.
The outer of the separation sleeve 8 is circumferentially with groove 8-1, and slot rolling 1-1 is arranged in the position of 1 respective slot 8-1 of cylinder barrel, described
Slot rolling 1-1 and groove 8-1, which coincide, to be fixed.
When the first stage piston bar 2 and second piston rod 4 are as cylinder barrel, circumferential setting slot rolling.
Sealing ring is respectively set between the first stage piston bar 2, second piston rod 4 and guide sleeve 10,14.
Multistage can be arranged in the piston rod, respectively as the cylinder barrel of next stage piston rod, internal structure and first stage piston
Bar 2 is identical；Afterbody piston rod is set as solid construction.
The design principle of the utility model are as follows: be the stroke for meeting big ratio or super large ratio, it is necessary in meeting stretching, extension
The heart reduces the length of cylinder barrel away under the premise of as far as possible, makes spread length much larger than reduction length, according to this principle, design
Person uses first stage piston bar as the cylinder barrel of second piston rod, and N grades of piston rods are used as the cylinder barrel of next stage piston rod,
Multistage cylinder barrel is retracted in first order cylinder barrel, with this compression cylinder tube length degree, to meet big ratio or super large ratio value, is solved big
The technical pattern demand of stroke or super large stroke.
Embodiment
The free gas spring of big stroke, the first order cylinder barrel format diameter 28cm, wall thickness 1.5cm, length 200cm, piston length+
Seal length=35cm, range=200-35=165cm, first stage piston bar format diameter 15cm, wall thickness 1cm, length
200cm, piston length seal length=24cm, range=200-24=176cm, two-stage stroke 165+176=341cm.
Thus it should be the sum of strokes at different levels that multistage stroke, which can be released,.It stretches center away from=549cm, and center of compression is away from=207cm.Implement
When, it need to the inside and outside sealings of sealing systems at different levels is tight, there is not leakage at the noon.
Claims (7)
1. a kind of free gas spring of big stroke, which is characterized in that connect including cylinder barrel, first stage piston bar, second piston rod, piston rod
Head and tail portion connector；It is filled with inert gas in the cylinder barrel, and first stage piston bar and piston are installed, first stage piston bar and cylinder
Separation sleeve, straight outside framework oil seal and guide sleeve are set gradually from inside to outside between cylinder；Sealing ring is set between the piston and cylinder barrel；
The first stage piston bar is hollow structure, is filled with inert gas in rod cavity, and by piston seal；Peace in the first stage piston bar
Fill second piston rod and piston, cylinder barrel of the first stage piston bar as second piston rod；The inner wall and second piston of first stage piston bar
Separation sleeve, straight outside framework oil seal and guide sleeve are set gradually between bar from inside to outside, is set between piston and the inner wall of first stage piston bar
Set sealing ring.
2. the free gas spring of big stroke according to claim 1, which is characterized in that the end of the second piston rod connects
The end of piston rod attachment, cylinder barrel connects pigtail connection.
3. the free gas spring of big stroke according to claim 1, which is characterized in that between the piston and separation sleeve respectively
There are gaps.
4. the free gas spring of big stroke according to claim 1, which is characterized in that the separation sleeve it is outer be circumferentially with it is recessed
Slot rolling is arranged in slot, the position of cylinder barrel respective slot, and the slot rolling and groove, which coincide, to be fixed.
5. the free gas spring of big stroke according to claim 4, which is characterized in that the first stage piston bar and second piston
When bar is as cylinder barrel, circumferential setting slot rolling.
6. the free gas spring of big stroke according to claim 1, which is characterized in that the first stage piston bar, second piston
Sealing ring is respectively set between bar and guide sleeve.
7. the free gas spring of big stroke according to claim 1, which is characterized in that multistage can be arranged in the piston rod,
Respectively as the cylinder barrel of next stage piston rod, internal structure is identical as first stage piston bar；Afterbody piston rod is set as solid
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821308424.4U CN208870960U (en) | 2018-08-14 | 2018-08-14 | The free gas spring of big stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821308424.4U CN208870960U (en) | 2018-08-14 | 2018-08-14 | The free gas spring of big stroke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208870960U true CN208870960U (en) | 2019-05-17 |
Family
ID=66464554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821308424.4U Active CN208870960U (en) | 2018-08-14 | 2018-08-14 | The free gas spring of big stroke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208870960U (en) |
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2018
- 2018-08-14 CN CN201821308424.4U patent/CN208870960U/en active Active
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