CN109990034B - Three-section controllable gas spring - Google Patents
Three-section controllable gas spring Download PDFInfo
- Publication number
- CN109990034B CN109990034B CN201711468172.1A CN201711468172A CN109990034B CN 109990034 B CN109990034 B CN 109990034B CN 201711468172 A CN201711468172 A CN 201711468172A CN 109990034 B CN109990034 B CN 109990034B
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- sealing
- movable
- sealing ring
- guide mechanism
- 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 180
- 239000010959 steel Substances 0.000 claims abstract description 180
- 238000007789 sealing Methods 0.000 claims abstract description 111
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims description 38
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 6
- 125000006850 spacer group Chemical group 0.000 description 10
- 238000000926 separation method Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/062—Bi-tubular units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/362—Combination of sealing and guide arrangements for piston rods
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention relates to a three-section controllable gas spring, which comprises a first steel pipe, a second steel pipe, a rear seal, a first-stage sealing guide mechanism, a movable steel pipe, a second-stage sealing guide mechanism, a piston rod and a floating ring, wherein the first steel pipe is connected with the rear seal; the second steel pipe is fixedly suspended in the first steel pipe through the rear seal and the first-stage sealing guide mechanism, a switch thimble is arranged in the rear seal, one end of the movable steel pipe axially slides through the first-stage sealing guide mechanism, and one end of the piston rod axially slides through the second-stage sealing guide mechanism; the floating ring is sleeved on the outer wall of the second steel pipe in a sliding manner, compressed gas is filled in a cavity between the floating ring and the first-stage sealing guide mechanism, and hydraulic oil is filled in a cavity between the floating ring and the rear seal. The three-section controllable gas spring is based on the working principle of gas oil pushing, and is safe to use, even if damaged, because the gas pressure is small, accidents can not be caused.
Description
Technical Field
The invention relates to a spring, in particular to a three-section controllable gas spring.
Background
The air spring is mainly applied to bar chairs, office chairs and office chairs. The air springs can only stretch in the whole course each time, and can not stop at any distance; in addition, the gas valve with the gas spring is out of control to cause the accident of hurting people at the bottom of the breakdown chair, so that the use is unsafe.
Disclosure of Invention
The invention aims to solve the technical problem of providing a three-section controllable gas spring which can be controlled to stay at any distance and is safe to use.
The technical scheme for solving the technical problems is as follows: a three-section controllable gas spring comprises a first steel pipe, a second steel pipe, a rear seal, a first-stage sealing guide mechanism, a movable steel pipe, a second-stage sealing guide mechanism, a piston rod and a floating ring; the second steel pipe is fixedly suspended in the first steel pipe through the rear seal and the first-stage sealing guide mechanism, the rear seal is respectively packaged at the tail end of the first steel pipe and the tail end of the second steel pipe, the first-stage sealing guide mechanism is respectively packaged at the top end of the first steel pipe and the top end of the second steel pipe, and a cavity is formed between the outer wall of the second steel pipe and the inner wall of the first steel pipe; a switch thimble is arranged in the rear seal, and when the switch thimble is opened, the tail end of the second steel pipe is communicated with the cavity; one end of the movable steel pipe axially slides through the first-stage sealing guide mechanism and is positioned in the second steel pipe and communicated with the second steel pipe, the other end of the movable steel pipe is positioned outside the second steel pipe, and a second-stage sealing guide mechanism is arranged at one end of the movable steel pipe positioned outside the second steel pipe; one end of the piston rod axially slides through the second-stage sealing guide mechanism and is positioned in the movable steel pipe; the floating ring is sleeved on the outer wall of the second steel pipe in a sliding manner, and the floating ring is in sliding fit with the inner wall of the first steel pipe; the cavity between the floating ring and the first-stage sealing guide mechanism is filled with compressed gas, and the cavity between the floating ring and the rear seal is filled with hydraulic oil.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the back seal comprises a first seal block and a second seal block, the second seal block is laminated on the first seal block and integrally formed with the first seal block, the shape and the size of the first seal block are matched with those of the tail end of the first steel pipe, the shape and the size of the second seal block are matched with those of the tail end of the second steel pipe, the first seal block is hermetically installed at the tail end of the first steel pipe, the second seal block is hermetically installed at the tail end of the second steel pipe, through holes are formed in the first seal block and the second seal block, one end of the switch thimble slides through the through holes and is positioned in the second steel pipe and can block or open the through holes, a communication channel is formed between the through holes and the cavities, and the through holes are mutually communicated with the cavities through the communication channel.
Further, a first sealing ring is arranged between the switch thimble and the first sealing block, a second sealing ring is arranged between the switch thimble and the second sealing block, and the joint of the through hole and the communication channel is positioned between the first sealing ring and the second sealing ring; and a third sealing ring is arranged between the first sealing block and the first steel pipe, and a fourth sealing ring is arranged between the second sealing block and the second steel pipe.
Further, the first-stage sealing guide mechanism comprises a separation piece and a first guide sleeve, the separation piece is of a boss structure with a shaft hole, a protruding head of the separation piece is embedded and installed in the top end of the second steel pipe, the side face of the separation piece platform body is in sealing fit with the inner part of the first steel pipe, the first guide sleeve is installed on the top end of the first steel pipe and abuts against the separation piece, and a guide hole of the first guide sleeve is communicated with the shaft hole of the separation piece; one end of the movable steel pipe sequentially penetrates through the guide hole of the first guide sleeve and the shaft hole of the isolating piece and is positioned in the second steel pipe, and a first piston is further arranged at one end of the movable steel pipe positioned in the second steel pipe.
Further, a fifth sealing ring is arranged between the raised head of the isolation piece and the second steel pipe, a sixth sealing ring is arranged between the platform body of the isolation piece and the movable steel pipe, a seventh sealing ring is arranged between the first guide sleeve and the first steel pipe, an eighth sealing ring is arranged between the first piston and the second steel pipe, and a sealing piece is arranged at the communication position of the guide hole of the first guide sleeve and the shaft hole of the isolation piece.
Further, the second-stage sealing guide mechanism comprises a second guide sleeve, the second guide sleeve is installed at one end of the movable steel pipe, which is located outside the second steel pipe, one end of the piston rod axially slides through the second guide sleeve and is located in the movable steel pipe, and a second piston is further arranged at one end of the piston rod located in the movable steel pipe.
Further, a third piston is further arranged in the movable steel pipe and is slidably mounted in the movable steel pipe, a ninth sealing ring is arranged between the second piston and the movable steel pipe, and a tenth sealing ring is arranged between the third piston and the movable steel pipe.
Further, an eleventh sealing ring is arranged between the floating ring and the second steel pipe, and a twelfth sealing ring is arranged between the floating ring and the first steel pipe.
Further, the compressed gas is nitrogen.
The beneficial effects of the invention are as follows: according to the working principle of gas oil pushing, when the switch thimble is opened, compressed gas pushes the floating ring, the floating ring pushes hydraulic oil, and the hydraulic oil pushes the movable steel pipe and the piston rod to realize the extension of the two sections; when the switch thimble is opened, the piston rod and the movable steel pipe are pushed by external force, the movable steel pipe and the piston rod push hydraulic oil, the hydraulic oil pushes the floating ring, and the floating ring pushes compressed gas to compress, so that two-section retraction is realized; when the movable steel pipe and the piston rod move to any position, the movable steel pipe and the piston rod can stay and self-lock when the closing and opening ejector pin is closed; in addition, the controllable gas spring is safe to use, and accidents can not be caused due to small gas pressure even if the controllable gas spring is damaged.
Drawings
FIG. 1 is a schematic view of the overall structure of a controllable gas spring according to the present invention;
FIG. 2 is an enlarged schematic view of the tail portion of a controllable gas spring according to the present invention;
FIG. 3 is an enlarged schematic view of the middle part of a controllable gas spring according to the present invention;
FIG. 4 is an enlarged schematic top view of a controllable gas spring according to the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. the hydraulic oil pump comprises a first steel pipe, 2, a second steel pipe, 3, a movable steel pipe, 4, a piston rod, 5, a floating ring, 6, a switch thimble, 7, compressed gas, 8, hydraulic oil, 9, a first sealing block, 10, a second sealing block, 11, a through hole, 12, a communication channel, 13, a first sealing piece, 14, a second sealing piece, 15, a third sealing piece, 16, a fourth sealing piece, 17, a spacer, 18, a first guide sleeve, 19, a first piston, 20, a fifth sealing ring, 21, a sixth sealing ring, 22, a seventh sealing ring, 23, an eighth sealing ring, 24, a sealing piece, 25, a second guide sleeve, 26, a second piston, 27, a third piston, 28, a ninth sealing ring, 29, a tenth sealing ring, 30, an eleventh sealing ring, 31 and a twelfth sealing ring.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 1, 2, 3 and 4, a three-section controllable gas spring comprises a first steel pipe 1, a second steel pipe 2, a rear seal, a first-stage sealing guide mechanism, a movable steel pipe 3, a second-stage sealing guide mechanism, a piston rod 4 and a floating ring 5; the second steel pipe 2 is fixedly suspended in the first steel pipe 1 through the rear seal and the first-stage sealing guide mechanism, the rear seal is respectively packaged at the tail end of the first steel pipe 1 and the tail end of the second steel pipe 2, the first-stage sealing guide mechanism is respectively packaged at the top end of the first steel pipe 1 and the top end of the second steel pipe 2, and a cavity is formed between the outer wall of the second steel pipe 2 and the inner wall of the first steel pipe 1; a switch thimble 6 is arranged in the rear seal, and when the switch thimble 6 is opened, the tail end of the second steel tube 2 is communicated with the cavity; one end of the movable steel pipe 3 axially slides through the first-stage sealing guide mechanism and is positioned in the second steel pipe 2 and is communicated with the second steel pipe 2, the other end of the movable steel pipe 3 is positioned outside the second steel pipe 2, and a second-stage sealing guide mechanism is arranged at one end of the movable steel pipe 3 positioned outside the second steel pipe 2; one end of the piston rod 4 axially slides through the second-stage sealing guide mechanism and is positioned in the movable steel pipe 3; the floating ring 5 is sleeved on the outer wall of the second steel pipe 2 in a sliding manner, and the floating ring 5 is in sliding fit with the inner wall of the first steel pipe 1; the cavity between the floating ring 5 and the first-stage sealing guide mechanism is filled with compressed gas 7, and the cavity between the floating ring 5 and the rear seal is filled with hydraulic oil 8.
Specific:
the back seal comprises a first seal block 9 and a second seal block 10, the second seal block 10 is laminated on the first seal block 9 and integrally formed with the first seal block 9, the shape and the size of the first seal block 9 are matched with those of the tail end of the first steel pipe 1, the shape and the size of the second seal block 10 are matched with those of the tail end of the second steel pipe 2, the first seal block 9 is hermetically installed at the tail end of the first steel pipe 1, the second seal block 10 is hermetically installed at the tail end of the second steel pipe 2, through holes 11 are formed in the first seal block 9 and the second seal block 10, one ends of the switch ejector pins 6 slide through the through holes 11 and are located in the second steel pipe 2 and can seal or open the through holes 11, communication channels 12 are formed between the through holes 11 and the cavities, and the through holes 11 are mutually communicated with the cavities through the communication channels 12.
A first sealing ring 13 is arranged between the switch thimble 6 and the first sealing block 9, a second sealing ring 14 is arranged between the switch thimble 6 and the second sealing block 10, and the joint of the through hole 11 and the communication channel 12 is positioned between the first sealing ring 13 and the second sealing ring 14; a third sealing ring 15 is arranged between the first sealing block 9 and the first steel pipe 1, and a fourth sealing ring 16 is arranged between the second sealing block 10 and the second steel pipe 2.
The first-stage sealing guide mechanism comprises a spacer 17 and a first guide sleeve 18, wherein the spacer 17 is of a boss structure with a shaft hole, a raised head of the spacer 17 is embedded and installed in the top end of the second steel pipe 2, the side surface of a spacer 17 table body is in sealing fit with the interior of the first steel pipe 1, the first guide sleeve 18 is installed on the top end of the first steel pipe 1 and abuts against the spacer 17, and a guide hole of the first guide sleeve 18 is communicated with the shaft hole of the spacer 17; one end of the movable steel pipe 3 sequentially passes through the guide hole of the first guide sleeve 18 and the shaft hole of the separator 17 and is positioned in the second steel pipe 2, and a first piston 19 is further arranged at one end of the movable steel pipe 3 positioned in the second steel pipe 2.
A fifth sealing ring 20 is arranged between the raised head of the spacer 17 and the second steel pipe 2, a sixth sealing ring 21 is arranged between the platform body of the spacer 17 and the movable steel pipe 3, a seventh sealing ring 22 is arranged between the first guide sleeve 18 and the first steel pipe 1, an eighth sealing ring 23 is arranged between the first piston 19 and the second steel pipe 2, and a sealing member 24 is arranged at the communication position of the guide hole of the first guide sleeve 18 and the shaft hole of the spacer 17.
The second-stage sealing guide mechanism comprises a second guide sleeve 25, the second guide sleeve 25 is mounted on one end of the movable steel pipe 3, which is located outside the second steel pipe 2, one end of the piston rod 4 axially slides through the second guide sleeve 25 and is located in the movable steel pipe 3, and a second piston 26 is further arranged on one end of the piston rod 4 located in the movable steel pipe 3.
A third piston 27 is further arranged in the movable steel pipe 3, the third piston 27 is slidably mounted in the movable steel pipe 3, a ninth sealing ring 28 is arranged between the second piston 26 and the movable steel pipe 3, and a tenth sealing ring 29 is arranged between the third piston 27 and the movable steel pipe 3.
An eleventh sealing ring 30 is arranged between the floating ring 5 and the second steel pipe 2, and a twelfth sealing ring 31 is arranged between the floating ring 5 and the first steel pipe 1.
The compressed gas 7 is nitrogen.
The working principle of the invention is as follows: the invention relates to a three-section controllable gas spring which is based on the working principle of gas oil pushing. Specific: in the initial state (assuming that the initial state is a contracted state), when the switch thimble 6 is opened, the tail end of the second steel tube 2 is communicated with the cavity, the pressure of the compressed gas 7 pushes the floating ring 5, the floating ring 5 pushes the hydraulic oil 8 to enable the hydraulic oil 8 to flow into the second steel tube 2 from the cavity, at the moment, the oil pressure in the second steel tube 2 is increased, so that the first piston 19 is pushed, and the movable steel tube 3 is pushed to extend by the first piston 19; since the second steel pipe 2 and the movable steel pipe 3 are communicated, when the oil pressure in the second steel pipe 2 rises, hydraulic oil 8 also flows into the movable steel pipe 3 from the second steel pipe 2, and the oil pressure in the movable steel pipe 3 rises to sequentially push the third piston 27 and the second piston 26, so that the piston rod 4 is pushed to extend; finally, two sections extend out. When the piston rod 4 and the movable steel pipe 3 are required to be contracted, the switch thimble 6 is opened, the piston rod 4 and the movable steel pipe 3 are pushed by external force, the second piston 26, the third piston 27 and the first piston 19 are driven to move to push the hydraulic oil 8, the hydraulic oil 8 further pushes the floating ring 5, and the floating ring 5 pushes the compressed gas 7 to compress, so that two-section contraction is realized. When the movable steel pipe 3 and the piston rod 4 move to any position, the movable steel pipe 3 and the piston rod 4 can stay and self-lock when the closing thimble 6 is closed; in addition, the controllable gas spring is safe to use, and accidents can not be caused due to small gas pressure even if the controllable gas spring is damaged.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (7)
1. A three-section controllable gas spring, characterized in that: the device comprises a first steel pipe, a second steel pipe, a rear seal, a first-stage sealing guide mechanism, a movable steel pipe, a second-stage sealing guide mechanism, a piston rod and a floating ring; the second steel pipe is fixedly suspended in the first steel pipe through the rear seal and the first-stage sealing guide mechanism, the rear seal is respectively packaged at the tail end of the first steel pipe and the tail end of the second steel pipe, the first-stage sealing guide mechanism is respectively packaged at the top end of the first steel pipe and the top end of the second steel pipe, and a cavity is formed between the outer wall of the second steel pipe and the inner wall of the first steel pipe; a switch thimble is arranged in the rear seal, and when the switch thimble is opened, the tail end of the second steel pipe is communicated with the cavity; one end of the movable steel pipe axially slides through the first-stage sealing guide mechanism and is positioned in the second steel pipe and communicated with the second steel pipe, the other end of the movable steel pipe is positioned outside the second steel pipe, and a second-stage sealing guide mechanism is arranged at one end of the movable steel pipe positioned outside the second steel pipe; one end of the piston rod axially slides through the second-stage sealing guide mechanism and is positioned in the movable steel pipe; the floating ring is sleeved on the outer wall of the second steel pipe in a sliding manner, and the floating ring is in sliding fit with the inner wall of the first steel pipe; the cavity between the floating ring and the first-stage sealing guide mechanism is filled with compressed gas, and the cavity between the floating ring and the rear seal is filled with hydraulic oil;
the first-stage sealing guide mechanism comprises a separator and a first guide sleeve, the separator is of a boss structure with a shaft hole, a protruding head of the separator is embedded and installed in the top end of the second steel pipe, the side surface of the separator table body is in sealing fit with the inner part of the first steel pipe, the first guide sleeve is installed on the top end of the first steel pipe and abuts against the separator, and a guide hole of the first guide sleeve is communicated with the shaft hole of the separator; one end of the movable steel pipe sequentially passes through the guide hole of the first guide sleeve and the shaft hole of the isolating piece and is positioned in the second steel pipe, and a first piston is further arranged at one end of the movable steel pipe positioned in the second steel pipe;
the second-stage sealing guide mechanism comprises a second guide sleeve, the second guide sleeve is arranged at one end of the movable steel pipe, which is positioned outside the second steel pipe, one end of the piston rod axially slides through the second guide sleeve and is positioned in the movable steel pipe, and a second piston is further arranged at one end of the piston rod, which is positioned in the movable steel pipe.
2. A three-section controllable gas spring according to claim 1, wherein: the rear seal comprises a first seal block and a second seal block, wherein the second seal block is laminated on the first seal block and integrally formed with the first seal block, the shape and the size of the first seal block are matched with those of the tail end of the first steel pipe, the shape and the size of the second seal block are matched with those of the tail end of the second steel pipe, the first seal block is hermetically installed at the tail end of the first steel pipe, the second seal block is hermetically installed at the tail end of the second steel pipe, through holes are formed in the first seal block and the second seal block, one end of the switch thimble slides through the through holes and is positioned in the second steel pipe and can seal or open the through holes, a communication channel is formed between the through holes and the cavities, and the through holes and the cavities are mutually communicated through the communication channel.
3. A three-section controllable gas spring according to claim 2, wherein: a first sealing ring is arranged between the switch thimble and the first sealing block, a second sealing ring is arranged between the switch thimble and the second sealing block, and the joint of the through hole and the communication channel is positioned between the first sealing ring and the second sealing ring; and a third sealing ring is arranged between the first sealing block and the first steel pipe, and a fourth sealing ring is arranged between the second sealing block and the second steel pipe.
4. A three-section controllable gas spring according to claim 1, wherein: a fifth sealing ring is arranged between the raised head of the isolation piece and the second steel pipe, a sixth sealing ring is arranged between the platform body of the isolation piece and the movable steel pipe, a seventh sealing ring is arranged between the first guide sleeve and the first steel pipe, an eighth sealing ring is arranged between the first piston and the second steel pipe, and a sealing piece is arranged at the communication position of the guide hole of the first guide sleeve and the shaft hole of the isolation piece.
5. A three-section controllable gas spring according to claim 1, wherein: the movable steel pipe is internally provided with a third piston, the third piston is slidably arranged in the movable steel pipe, a ninth sealing ring is arranged between the second piston and the movable steel pipe, and a tenth sealing ring is arranged between the third piston and the movable steel pipe.
6. A three-section controllable gas spring according to any one of claims 1 to 3, wherein: an eleventh sealing ring is arranged between the floating ring and the second steel pipe, and a twelfth sealing ring is arranged between the floating ring and the first steel pipe.
7. A three-section controllable gas spring according to any one of claims 1 to 3, wherein: the compressed gas is nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711468172.1A CN109990034B (en) | 2017-12-29 | 2017-12-29 | Three-section controllable gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711468172.1A CN109990034B (en) | 2017-12-29 | 2017-12-29 | Three-section controllable gas spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109990034A CN109990034A (en) | 2019-07-09 |
| CN109990034B true CN109990034B (en) | 2024-04-02 |
Family
ID=67109360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711468172.1A Active CN109990034B (en) | 2017-12-29 | 2017-12-29 | Three-section controllable gas spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109990034B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749357A (en) * | 2008-12-09 | 2010-06-23 | 江苏明星减震器有限公司 | Floating ring |
| CN202768705U (en) * | 2012-07-27 | 2013-03-06 | 奉化市仁龙机械有限公司 | Balance-type gas spring |
| CN103352958A (en) * | 2013-07-02 | 2013-10-16 | 太原理工大学 | Buffer device of hydraulic cylinder |
| JP6198926B1 (en) * | 2016-12-19 | 2017-09-20 | 株式会社キャロッセ | Hydraulic shock absorber |
| CN107339360A (en) * | 2017-09-08 | 2017-11-10 | 中航飞机起落架有限责任公司 | A kind of undercarriage buffer |
| CN107429777A (en) * | 2015-04-20 | 2017-12-01 | Kyb摩托车减震器株式会社 | Front fork |
-
2017
- 2017-12-29 CN CN201711468172.1A patent/CN109990034B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749357A (en) * | 2008-12-09 | 2010-06-23 | 江苏明星减震器有限公司 | Floating ring |
| CN202768705U (en) * | 2012-07-27 | 2013-03-06 | 奉化市仁龙机械有限公司 | Balance-type gas spring |
| CN103352958A (en) * | 2013-07-02 | 2013-10-16 | 太原理工大学 | Buffer device of hydraulic cylinder |
| CN107429777A (en) * | 2015-04-20 | 2017-12-01 | Kyb摩托车减震器株式会社 | Front fork |
| JP6198926B1 (en) * | 2016-12-19 | 2017-09-20 | 株式会社キャロッセ | Hydraulic shock absorber |
| CN107339360A (en) * | 2017-09-08 | 2017-11-10 | 中航飞机起落架有限责任公司 | A kind of undercarriage buffer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109990034A (en) | 2019-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI440766B (en) | Decelerating device | |
| JP5997466B2 (en) | Multistage hydraulic cylinder assembly | |
| WO2014093761A3 (en) | Sliding sleeve having contracting, ringed ball seat | |
| CN108223816B (en) | Hydraulic drive pilot type emergency cut-off valve | |
| EP3862530A3 (en) | Bidirectional downhole isolation valve | |
| EP3073048A3 (en) | Downhole isolation valve | |
| CA2709759A1 (en) | Removable hydraulic-set packer | |
| CN103982105A (en) | universal stop tube | |
| CN203860785U (en) | Heavy slide rail | |
| US2905458A (en) | Hydraulically damped spring-biased pistons and cylinders | |
| TW201918197A (en) | Movable furniture part and damping device thereof | |
| CN105240577B (en) | A kind of remote measurement and control flow divider and shunt controller | |
| CN109990034B (en) | Three-section controllable gas spring | |
| CA2548404A1 (en) | Impact tool | |
| KR100976011B1 (en) | A Gas-spring | |
| CN104088827B (en) | Bridge of boats springboard hydraulic pressure turn-over device | |
| CN105615287B (en) | A kind of Pedals type lifting table | |
| CN110273957A (en) | A kind of gas spring that driving force is external | |
| ATE361438T1 (en) | LENGTH-ADJUSTABLE COMPRESSION SPRING | |
| KR20110070111A (en) | Tension gas spring | |
| CN107293953A (en) | It is a kind of can be with the high-tension switch cabinet of automatic door opening | |
| CA2804171A1 (en) | Reciprocating pump with chamber-charging mechanism | |
| CN209385429U (en) | A kind of plunger case of built-in buffer structure | |
| CN207935336U (en) | One kind three saves controllable gas spring | |
| KR20170052120A (en) | Cylinder unit having stopping function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |