CN112664603B - Stepless speed regulating gas spring - Google Patents
Stepless speed regulating gas spring Download PDFInfo
- Publication number
- CN112664603B CN112664603B CN202011520390.7A CN202011520390A CN112664603B CN 112664603 B CN112664603 B CN 112664603B CN 202011520390 A CN202011520390 A CN 202011520390A CN 112664603 B CN112664603 B CN 112664603B
- Authority
- CN
- China
- Prior art keywords
- piston
- rod
- sealing
- sliding
- gas spring
- 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
Images
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The invention relates to the technical field of springs, in particular to an electrodeless speed regulation gas spring. The stepless speed regulating gas spring comprises a pressure cylinder; a piston slidably mounted within the pressure tube; the piston rod is fixedly arranged on the piston, and the top end of the piston rod extends out of the pressure cylinder; the sealing cover is arranged on the top side of the pressure cylinder, and the piston rod penetrates through the sealing cover; the sealing piece is sleeved on the piston and is in sliding sealing connection with the inner wall of the piston; a plurality of cushioning devices mounted to a bottom side of the piston; the pressure release mechanism is arranged in the piston. The stepless speed regulating gas spring provided by the invention has the advantages of simple structure and buffer protection.
Description
Technical Field
The invention relates to the technical field of springs, in particular to an electrodeless speed regulation gas spring.
Background
The gas spring is an industrial fitting with functions of supporting, buffering, braking, height adjustment, angle adjustment and the like. It is composed of the following parts: a pressure cylinder, a piston rod, a piston, a sealing guide sleeve, a filler (inert gas or oil-gas mixture), an in-cylinder control element, an out-cylinder control element (referred to as a controllable gas spring), a joint and the like. The principle is that inert gas or oil-gas mixture is filled in a closed pressure cylinder to make the pressure in the cavity be several times or tens times higher than the atmospheric pressure, and the piston rod is moved by the pressure difference generated by the fact that the cross section area of the piston rod is smaller than that of the piston. Due to the fundamental differences in principle, gas springs have significant advantages over conventional springs: the speed is relatively slow, the dynamic force is not changed much (generally within 1:1.2), and the control is easy.
Most of the existing gas springs are not provided with buffer protection mechanisms, the gas springs are commonly used in some running mechanisms, the bottom ends of the gas springs are directly contacted with the ground to realize a running function, long-time friction is easy to cause cylinder explosion and air leakage, the piston loses gas support, and the piston collides with the bottom of the pressure cylinder to different degrees when the stroke of the gas springs is close to a terminal, so that the gas springs are damaged to a certain extent.
Therefore, it is necessary to provide a new stepless speed regulating gas spring to solve the above technical problems.
Disclosure of Invention
The invention solves the technical problem of providing an electrodeless speed regulation gas spring with a simple structure and buffer protection.
In order to solve the technical problems, the stepless speed regulating gas spring provided by the invention comprises: the device comprises a pressure cylinder, a piston rod, a sealing cover, a sealing piece, a plurality of buffer devices and a pressure release mechanism, wherein the piston is slidably arranged in the pressure cylinder, the piston rod is fixedly arranged on the piston, and the top end of the piston rod extends out of the pressure cylinder; the sealing cover is arranged on the top side of the pressure cylinder, and the piston rod penetrates through the sealing cover; the sealing element is sleeved on the piston, and the sealing element and the inner wall of the piston are in sliding sealing connection with the buffer device and are arranged on the bottom side of the piston; the pressure release mechanism is arranged in the piston.
Preferably, the buffer device comprises a slide bar, a plurality of grooves are formed in the bottom side of the piston, the slide bar is slidably mounted in the grooves, the bottom end of the slide bar extends out of the grooves and is connected with the same buffer plate, a spring is mounted in the grooves, the top end of the spring is fixedly connected with the inner wall of the top side of the grooves, and the bottom end of the spring is fixedly connected with the slide bar.
Preferably, limit grooves are formed in the inner walls of the two sides of the groove, limit blocks are fixedly arranged on the two sides of the sliding rod, and the limit blocks are in sliding connection with the limit grooves.
Preferably, a supporting rod is fixedly arranged in the limiting groove, and the limiting block is in sliding sleeve joint with the supporting rod.
Preferably, the pressure release mechanism is including seting up cavity on the piston, a plurality of first communication holes have been seted up to the top side of piston, first communication hole with the cavity is linked together, the second intercommunicating pore has been seted up on the bottom side inner wall of cavity, the top side fixed mounting of buffer board has the dead lever, the top of fixed plate extends to in the second intercommunicating pore and fixed mounting have the rubber sealing plug, the rubber sealing plug with the inner wall sealing sliding connection of second intercommunicating pore.
Preferably, clamping grooves are formed in two sides of the pressure cylinder, placing grooves are formed in two sides of the sealing cover, through holes are formed in the inner wall of one side of the placing grooves, clamping rods are slidably mounted in the through holes, one ends of the clamping rods extend into the clamping grooves, screw rods are rotatably mounted in the through holes, the screw rods are in threaded sleeve connection with the clamping rods, and the other ends of the screw rods extend into the placing grooves and are fixedly provided with handles.
Preferably, the sliding rails are fixedly installed on the inner walls of the top side and the bottom side of the through hole, the sliding blocks are fixedly installed on the top side and the bottom side of the clamping rod, and the sliding rails are in sliding connection with the sliding blocks.
Preferably, a bearing is arranged in the through hole, and an inner ring of the bearing is fixedly sleeved with the screw rod.
Preferably, a sealing ring groove is formed in the top side of the pressure cylinder, and a sealing ring is fixedly mounted on the bottom side of the sealing cover and is matched with the sealing ring groove.
Preferably, a sealing ring is installed in the sealing ring groove, and the sealing ring is in contact with the sealing ring.
Compared with the related art, the stepless speed regulating gas spring provided by the invention has the following beneficial effects:
the invention provides an electrodeless speed regulation gas spring, which is characterized in that a buffer device is arranged to buffer and protect a piston, so that the piston stroke is prevented from collision to different degrees when reaching a terminal, the gas spring is damaged to a certain extent, and the buffer effect is good; the pressure relief mechanism is arranged to perform pressure relief on the strong pressure side, so that the pressure cylinder is protected from damage.
Drawings
FIG. 1 is a schematic view of a stepless speed regulating gas spring according to a preferred embodiment of the present invention;
FIG. 2 is an enlarged schematic view of portion A shown in FIG. 1;
FIG. 3 is an enlarged schematic view of portion B shown in FIG. 2;
FIG. 4 is a schematic view of a second embodiment of an stepless speed regulating gas spring provided by the invention;
FIG. 5 is an enlarged schematic view of portion C shown in FIG. 4;
fig. 6 is a schematic top view of the pressure cylinder shown in fig. 4.
Reference numerals in the drawings: 1. the sealing device comprises a pressure cylinder, 2, a piston, 3, a piston rod, 4, a sealing cover, 5, a sealing piece, 6, a groove, 7, a sliding rod, 8, a spring, 9, a buffer plate, 11, a first communication hole, 12, a cavity, 13, a second communication hole, 14, a fixed rod, 15, a rubber sealing plug, 16, a clamping groove, 17, a placing groove, 18, a through hole, 19, a clamping rod, 20, a screw rod, 21, a bearing, 22, a handle, 23, a sliding rail, 24, a sliding block, 25, a sealing ring groove, 26, a sealing ring, 27 and a sealing ring.
Detailed Description
The invention will be further described with reference to the drawings and embodiments.
First embodiment:
referring to fig. 1 to 3 in combination, in a first embodiment of the present invention, an electrodeless variable speed gas spring includes: the device comprises a pressure cylinder 1, a piston 2, a piston rod 3, a sealing cover 4, a sealing piece 5, a plurality of buffering devices and a pressure release mechanism, wherein the piston 2 is slidably arranged in the pressure cylinder 1; the piston rod 3 is fixedly arranged on the piston 2, and the top end of the piston rod 3 extends out of the pressure cylinder 1; the sealing cover 4 is arranged on the top side of the pressure cylinder 1, and the piston rod 3 penetrates through the sealing cover 4; the sealing element 5 is sleeved on the piston 2, and the sealing element 5 is in sliding sealing connection with the inner wall of the piston 2; the buffer device is arranged at the bottom side of the piston 2; the pressure release mechanism is arranged in the piston 2.
The buffering device comprises a sliding rod 7, a plurality of grooves 6 are formed in the bottom side of the piston 2, the sliding rod 7 is slidably mounted in the grooves 6, the bottom end of the sliding rod 7 extends out of the grooves 6 and is connected with the same buffering plate 9, a spring 8 is mounted in the grooves 6, the top end of the spring 8 is fixedly connected with the inner wall of the top side of the grooves 6, the bottom end of the spring 8 is fixedly connected with the sliding rod 7, when the stroke of the piston 2 reaches a terminal, the buffering plate 9 is firstly contacted with the bottom side of the pressure cylinder 1, and the buffering plate 9 drives the sliding rod 7 to compress the spring 8 for buffering.
Limiting grooves are formed in the inner walls of the two sides of the groove 6, limiting blocks are fixedly arranged on the two sides of the sliding rod 7, and the limiting blocks are in sliding connection with the limiting grooves.
And a supporting rod is fixedly arranged in the limiting groove, and the limiting block is in sliding sleeve joint with the supporting rod.
The decompression mechanism comprises a cavity 12 formed in the piston 2, a plurality of first communication holes 11 are formed in the top side of the piston 2, the first communication holes 11 are communicated with the cavity 12, a second communication hole 13 is formed in the inner wall of the bottom side of the cavity 12, a fixing rod 14 is fixedly arranged on the top side of the buffer plate 9, the top end of the fixing plate 14 extends to the inside of the second communication hole 13 and is fixedly provided with a rubber sealing plug 15, the rubber sealing plug 15 is in sealing sliding connection with the inner wall of the second communication hole 13, the fixing rod 14 is driven to move while the buffer plate 9 drives the sliding rod 7 to move, the fixing rod 14 drives the rubber sealing plug 15 to move, when the rubber sealing plug 15 moves into the cavity 12, the first communication hole 11 is communicated with the second communication hole 13, two ends of the piston 2 are communicated, and the strong pressure side is subjected to strong side decompression through the first communication hole 11 and the second communication hole 13, so that the pressure cylinder is prevented from being damaged.
The working principle of the stepless speed regulating gas spring provided by the invention is as follows:
when the stroke of the piston 2 reaches the terminal, the buffer plate 9 is firstly contacted with the bottom side of the pressure cylinder 1, the buffer plate 9 drives the slide rod 7 to compress the spring 8 for buffering, the buffer plate 9 drives the slide rod 7 to move and simultaneously drives the fixing rod 14 to move, the fixing rod 14 drives the rubber sealing plug 15 to move, when the rubber sealing plug 15 moves into the cavity 12, the first connecting hole 11 is communicated with the second connecting hole 13, two ends of the piston 2 are communicated, the strong pressure side is subjected to strong pressure side pressure relief through the first connecting hole 11 and the second connecting hole 13, and the pressure cylinder is protected from being damaged.
Compared with the related art, the stepless speed regulating gas spring provided by the invention has the following beneficial effects:
the invention provides an electrodeless speed regulation gas spring, which is characterized in that a buffer device is arranged to buffer and protect a piston 2, so that the piston 2 is prevented from collision to different degrees when the stroke reaches a terminal, the gas spring is damaged to a certain extent, and the buffer effect is good; the pressure relief mechanism is arranged to perform pressure relief on the strong pressure side, so that the pressure cylinder is protected from damage.
Second embodiment:
based on the stepless speed regulating gas spring provided by the first embodiment of the application, the second embodiment of the application provides another stepless speed regulating gas spring. The second embodiment is merely a preferred manner of the first embodiment, and implementation of the second embodiment does not affect the implementation of the first embodiment alone.
A second embodiment of the present invention will be further described with reference to the drawings and embodiments.
Referring to fig. 1 to 6 in combination, in a second embodiment of the present invention, an electrodeless variable speed gas spring includes: the device comprises a pressure cylinder 1, a piston 2, a piston rod 3, a sealing cover 4 sealing piece 5, a plurality of buffer devices and a pressure relief mechanism, wherein the piston 2 is slidably arranged in the pressure cylinder 1; the piston rod 3 is fixedly arranged on the piston 2, and the top end of the piston rod 3 extends out of the pressure cylinder 1; the sealing cover 4 is arranged on the top side of the pressure cylinder 1, and the piston rod 3 penetrates through the sealing cover 4; the sealing element 5 is sleeved on the piston 2, and the sealing element 5 is in sliding sealing connection with the inner wall of the piston 2; the buffer device is arranged at the bottom side of the piston 2, and the pressure relief mechanism is arranged in the piston 2.
The buffering device comprises a sliding rod 7, a plurality of grooves 6 are formed in the bottom side of the piston 2, the sliding rod 7 is slidably mounted in the grooves 6, the bottom end of the sliding rod 7 extends out of the grooves 6 and is connected with the same buffering plate 9, a spring 8 is mounted in the grooves 6, the top end of the spring 8 is fixedly connected with the inner wall of the top side of the grooves 6, the bottom end of the spring 8 is fixedly connected with the sliding rod 7, when the stroke of the piston 2 reaches a terminal, the buffering plate 9 is firstly contacted with the bottom side of the pressure cylinder 1, and the buffering plate 9 drives the sliding rod 7 to compress the spring 8 for buffering.
Limiting grooves are formed in the inner walls of the two sides of the groove 6, limiting blocks are fixedly arranged on the two sides of the sliding rod 7, and the limiting blocks are in sliding connection with the limiting grooves.
And a supporting rod is fixedly arranged in the limiting groove, and the limiting block is in sliding sleeve joint with the supporting rod.
The decompression mechanism comprises a cavity 12 formed in the piston 2, a plurality of first communication holes 11 are formed in the top side of the piston 2, the first communication holes 11 are communicated with the cavity 12, a second communication hole 13 is formed in the inner wall of the bottom side of the cavity 12, a fixing rod 14 is fixedly arranged on the top side of the buffer plate 9, the top end of the fixing plate 14 extends to the inside of the second communication hole 13 and is fixedly provided with a rubber sealing plug 15, the rubber sealing plug 15 is in sealing sliding connection with the inner wall of the second communication hole 13, the fixing rod 14 is driven to move while the buffer plate 9 drives the sliding rod 7 to move, the fixing rod 14 drives the rubber sealing plug 15 to move, when the rubber sealing plug 15 moves into the cavity 12, the first communication hole 11 is communicated with the second communication hole 13, two ends of the piston 2 are communicated, and the strong pressure side is subjected to strong side decompression through the first communication hole 11 and the second communication hole 13, so that the pressure cylinder is prevented from being damaged.
Clamping grooves 16 are formed in two sides of the pressure cylinder 1, a placing groove 17 is formed in two sides of the sealing cover 4, a through hole 18 is formed in the inner wall of one side of the placing groove 17, a clamping rod 19 is slidably installed in the through hole 18, one end of the clamping rod 19 extends into the clamping groove 16, a screw rod 20 is rotatably installed in the through hole 18, the screw rod 20 is in threaded sleeve joint with the clamping rod 19, and the other end of the screw rod 20 extends into the placing groove 17 and is fixedly provided with a handle 22.
Slide rails 23 are fixedly mounted on the top side inner wall and the bottom side inner wall of the through hole 18, sliding blocks 24 are fixedly mounted on the top side and the bottom side of the clamping rod 19, and the slide rails 23 are in sliding connection with the sliding blocks 24.
A bearing 21 is arranged in the through hole 18, and the inner ring of the bearing 21 is fixedly sleeved with the screw rod 20.
The top side of the pressure cylinder 1 is provided with a sealing ring groove 25, the bottom side of the sealing cover 4 is fixedly provided with a sealing ring 27, and the sealing ring 27 is matched with the sealing ring groove 25.
A sealing ring 26 is installed in the sealing ring groove 25, and the sealing ring 27 is in contact with the sealing ring 26.
The working principle of the stepless speed regulating gas spring provided by the invention is as follows:
when the stroke of the piston 2 reaches a terminal, the buffer plate 9 firstly contacts the bottom side of the pressure cylinder 1, the buffer plate 9 drives the slide rod 7 to compress the spring 8 for buffering, the buffer plate 9 drives the slide rod 7 to move and simultaneously drives the fixing rod 14 to move, the fixing rod 14 drives the rubber sealing plug 15 to move, when the rubber sealing plug 15 moves into the cavity 12, the first connecting hole 11 is communicated with the second connecting hole 13, two ends of the piston 2 are communicated, the strong pressure side is subjected to strong side pressure relief through the first connecting hole 11 and the second connecting hole 13, the pressure cylinder is protected from being damaged, when the sealing cover 4 is required to be disassembled to inspect and maintain the interior of the pressure cylinder 1, the handle 22 is rotated, the handle 22 drives the screw rod 20 to rotate, the screw rod 20 drives the clamping rod 19 to be separated from the clamping groove 16, and the sealing cover 4 can be disassembled at the moment; the pressure cylinder 1 can be sealed through the sealing ring groove 25, the sealing ring 26 and the sealing ring 27, so that the defect of insufficient elasticity of the gas spring caused by gas leakage is prevented.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (8)
1. An electrodeless speed regulating gas spring, comprising: the device comprises a pressure cylinder (1), a piston (2), a piston rod (3), a sealing cover (4), a sealing piece (5), a plurality of buffer devices and a pressure release mechanism, wherein the piston (2) is slidably arranged in the pressure cylinder (1); the piston rod (3) is fixedly arranged on the piston (2), and the top end of the piston rod (3) extends out of the pressure cylinder (1); the sealing cover (4) is arranged on the top side of the pressure cylinder (1), and the piston rod (3) penetrates through the sealing cover (4); the sealing element (5) is sleeved on the piston (2), and the sealing element (5) is in sliding sealing connection with the inner wall of the piston (2); the buffer device is arranged at the bottom side of the piston (2); the pressure release mechanism is arranged in the piston (2);
the buffering device comprises a sliding rod (7), a plurality of grooves (6) are formed in the bottom side of the piston (2), the sliding rod (7) is slidably installed in the grooves (6), the bottom end of the sliding rod (7) extends out of the grooves (6) and is connected with the same buffering plate (9), a spring (8) is installed in the grooves (6), the top end of the spring (8) is fixedly connected with the inner wall of the top side of the grooves (6), and the bottom end of the spring (8) is fixedly connected with the sliding rod (7);
the pressure release mechanism comprises a cavity (12) formed in the piston (2), a plurality of first communication holes (11) are formed in the top side of the piston (2), the first communication holes (11) are communicated with the cavity (12), a second communication hole (13) is formed in the inner wall of the bottom side of the cavity (12), a fixing rod (14) is fixedly arranged on the top side of the buffer plate (9), the top end of the fixing rod (14) extends into the second communication hole (13) and is fixedly provided with a rubber sealing plug (15), and the rubber sealing plug (15) is in sealing sliding connection with the inner wall of the second communication hole (13);
when the rubber sealing plug 15 moves into the cavity 12, the first connecting hole 11 is communicated with the second connecting hole 13, two ends of the piston 2 are communicated, and the strong pressure side is subjected to strong pressure relief through the first connecting hole 11 and the second connecting hole 13, so that the pressure cylinder is protected from being damaged.
2. The stepless speed regulating gas spring according to claim 1, wherein limiting grooves are formed in inner walls of two sides of the groove (6), limiting blocks are fixedly arranged on two sides of the sliding rod (7), and the limiting blocks are in sliding connection with the limiting grooves.
3. The stepless speed regulating gas spring according to claim 2, wherein a supporting rod is fixedly arranged in the limiting groove, and the limiting block is in sliding sleeve joint with the supporting rod.
4. The stepless speed regulating gas spring according to claim 1, wherein clamping grooves (16) are formed in two sides of the pressure cylinder (1), a placing groove (17) is formed in two sides of the sealing cover (4), a through hole (18) is formed in one side inner wall of the placing groove (17), a clamping rod (19) is slidably installed in the through hole (18), one end of the clamping rod (19) extends into the clamping groove (16), a screw rod (20) is rotatably installed in the through hole (18), the screw rod (20) is in threaded sleeve joint with the clamping rod (19), and the other end of the screw rod (20) extends into the placing groove (17) and is fixedly provided with a handle (22).
5. The stepless speed regulating gas spring according to claim 4, wherein sliding rails (23) are fixedly installed on the top side inner wall and the bottom side inner wall of the through hole (18), sliding blocks (24) are fixedly installed on the top side and the bottom side of the clamping rod (19), and the sliding rails (23) are in sliding connection with the sliding blocks (24).
6. The stepless speed regulating gas spring according to claim 4, wherein a bearing (21) is installed in the through hole (18), and an inner ring of the bearing (21) is fixedly sleeved with the screw rod (20).
7. The stepless speed regulating gas spring according to claim 1, wherein a sealing ring groove (25) is formed in the top side of the pressure cylinder (1), a sealing ring (27) is fixedly mounted on the bottom side of the sealing cover (4), and the sealing ring (27) is matched with the sealing ring groove (25).
8. The stepless speed regulating gas spring according to claim 7, wherein a sealing ring (26) is installed in the sealing ring groove (25), and the sealing ring (27) is in contact with the sealing ring (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011520390.7A CN112664603B (en) | 2020-12-21 | 2020-12-21 | Stepless speed regulating gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011520390.7A CN112664603B (en) | 2020-12-21 | 2020-12-21 | Stepless speed regulating gas spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112664603A CN112664603A (en) | 2021-04-16 |
| CN112664603B true CN112664603B (en) | 2023-05-12 |
Family
ID=75406955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011520390.7A Active CN112664603B (en) | 2020-12-21 | 2020-12-21 | Stepless speed regulating gas spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112664603B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114688195B (en) * | 2022-04-29 | 2023-08-29 | 邵阳市通达汽车零部件制造有限公司 | Stroke-adjustable gas spring |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB881194A (en) * | 1958-01-18 | 1961-11-01 | Garringtons Ltd | Improvements relating to shock absorbers |
| CN2331538Y (en) * | 1998-04-28 | 1999-08-04 | 曹善明 | Controllable gas spring device |
| CN205190618U (en) * | 2015-11-25 | 2016-04-27 | 南京江凯汽车零部件有限公司 | Rotary valve pin type speed governing air spring |
| WO2018058520A1 (en) * | 2016-09-30 | 2018-04-05 | 征博科技（深圳）有限公司 | Electrically-driven gas spring |
| CN208474235U (en) * | 2018-07-25 | 2019-02-05 | 肇庆世高机械设备有限公司 | A kind of high cushion performance hydraulic cylinder |
| CN109327122A (en) * | 2018-11-13 | 2019-02-12 | 江苏锐美汽车零部件有限公司 | A kind of New energy automobile motor casing end face agitating friction welds jig |
| CN209012595U (en) * | 2018-11-15 | 2019-06-21 | 天津市昊力复合钢管制造有限公司 | A kind of effective connection structure of plastic coated composite steel |
| CN210240408U (en) * | 2019-07-04 | 2020-04-03 | 常州市东力机械有限公司 | Nitrogen spring with protection mechanism |
| CN211288307U (en) * | 2019-12-05 | 2020-08-18 | 上饶市超宏机械有限公司 | Hydraulic oil cylinder of lifting bracket of dumper |
| CN211693035U (en) * | 2019-12-20 | 2020-10-16 | 福建省龙岩盛通液压有限公司 | Hydraulic cylinder capable of adjusting buffer speed |
-
2020
- 2020-12-21 CN CN202011520390.7A patent/CN112664603B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112664603A (en) | 2021-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112664603B (en) | Stepless speed regulating gas spring | |
| CN107701639B (en) | Twin-tub controllable gas spring | |
| CN216433234U (en) | Portable auxiliary framework for measuring GIS vibration | |
| CN102628463A (en) | Mechanical self-locking hydraulic cylinder | |
| JPS5926816B2 (en) | Variable displacement hydraulic pressure combined type accumulator | |
| CN102305309A (en) | Hydraulic damping device for valve | |
| CN2499634Y (en) | Gas spring cylinder | |
| CN202545419U (en) | Mechanical self-locking hydraulic cylinder | |
| KR20110070111A (en) | Tension gas spring | |
| US3752461A (en) | Pneumatic spring devices | |
| US20130160691A1 (en) | Shock absorbing docking spacer with fluid compression buffering | |
| CN109083973A (en) | Modified damping device for electromechanical equipment | |
| CN213929261U (en) | Supplementary answer formula air spring | |
| GB2593292A (en) | Landing for subsea equipment | |
| CN210335830U (en) | Mounting tool of double-lug type compressed air spring | |
| CN210196339U (en) | Low-friction lockable gas spring | |
| US20080036126A1 (en) | Failsafe buffer strut set | |
| CN216278751U (en) | Multistage buffering formula pneumatic cylinder | |
| US20060151927A1 (en) | Failsafe buffer strut set | |
| CN217481826U (en) | Adjustable damping shock absorber | |
| BR112019013054A8 (en) | BUFFER TO ABSORB SHOCK GENERATED BY DOCTING A MOBILE STRUCTURE WITH A STATIONARY STRUCTURE OR FOUNDATION | |
| CN213598482U (en) | Stroke-adjustable air spring | |
| KR20080013501A (en) | Damper | |
| CN218177606U (en) | Hydraulic cylinder piston assembly and hydraulic cylinder | |
| CN215214511U (en) | Air spring with adjustable working stroke |
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 | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230420 Address after: No.33, gongaoheng 1st Road, xiniupi village, Dalang Town, Dongguan City, Guangdong Province, 523770 Applicant after: DONGGUAN DUSHI CHENGFA PRECISION SPRING CO.,LTD. Address before: Fuyuan Industrial Park, 1000 Yanshan Road, Huangdao District, Qingdao City, Shandong Province 266599 Applicant before: Ding Jinnian |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |