CN114033825B - A nitrogen spring with self-lubricating function - Google Patents
A nitrogen spring with self-lubricating function Download PDFInfo
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- CN114033825B CN114033825B CN202111464105.9A CN202111464105A CN114033825B CN 114033825 B CN114033825 B CN 114033825B CN 202111464105 A CN202111464105 A CN 202111464105A CN 114033825 B CN114033825 B CN 114033825B
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- inner cavity
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- guide cylinder
- cylinder sleeve
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 27
- 239000010687 lubricating oil Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 30
- 230000003068 static effect Effects 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 6
- 230000002829 reductive effect Effects 0.000 claims description 6
- 230000000670 limiting effect Effects 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000002441 reversible effect Effects 0.000 claims description 3
- 239000003595 mist Substances 0.000 abstract description 14
- 239000003921 oil Substances 0.000 abstract description 14
- 239000007788 liquid Substances 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
Classifications
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- 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
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
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- 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
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
- F16F9/0281—Details
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- 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
- F16F9/3221—Constructional features of piston rods
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- 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
- F16F9/3278—Details for lubrication
-
- 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
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
-
- 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
-
- 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
- F16F9/369—Sealings for elements other than pistons or piston rods, e.g. valves
-
- 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
- F16F9/43—Filling or drainage arrangements, e.g. for supply of gas
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compressor (AREA)
- Fluid-Damping Devices (AREA)
Abstract
本发明适用于模具相关技术领域，提供了一种具有自润滑功能的氮气弹簧，包括缸体以及活塞杆，还包括：充气组件，所述底座为中空结构，所述充气组件密封设置于底座底部，所述充气组件可拆卸设置；毛细孔，所述导向缸套底部与底座顶部相密封固定于缸筒内，所述导向缸套与底座的连接位置与缸筒内壁之间形成第二内腔，所述导向缸套的内壁且位于活塞杆的底部部分与底座的顶部中空部分之间形成第一内腔，所述毛细孔开设在底座上且用于连通第一内腔和第二内腔，本发明的有益效果是：活塞杆上行时通过油雾对缸筒内壁进行冷却，活塞杆回升时液体润滑油通过油雾对活塞密封以及导向缸套内壁进行润滑，以此提高氮气弹簧的使用寿命。
The present invention is applicable to the technical field related to molds, and provides a nitrogen spring with self-lubricating function, including a cylinder body and a piston rod, and also including: an inflation component, the base is a hollow structure, the inflation component is sealed and arranged at the bottom of the base, and the inflation component is detachable; a capillary hole, the bottom of the guide cylinder sleeve and the top of the base are sealed and fixed in the cylinder barrel, a second inner cavity is formed between the connection position of the guide cylinder sleeve and the base and the inner wall of the cylinder barrel, the inner wall of the guide cylinder sleeve and the bottom part of the piston rod and the top hollow part of the base form a first inner cavity, the capillary hole is opened on the base and is used to connect the first inner cavity and the second inner cavity, the beneficial effect of the present invention is: when the piston rod moves upward, the inner wall of the cylinder barrel is cooled by oil mist, and when the piston rod rises, the liquid lubricating oil lubricates the piston seal and the inner wall of the guide cylinder sleeve through the oil mist, thereby improving the service life of the nitrogen spring.
Description
Technical Field
The invention belongs to the technical field of related moulds, and particularly relates to a nitrogen spring with a self-lubricating function.
Background
With the wider and wider application of nitrogen springs, the requirements of partial molds (such as miniature motor shells and the like) and equipment on the use times of the nitrogen springs are higher and higher, and the product quantity of some molds reaches tens of millions. However, the use times of the common nitrogen spring in the current market are generally only 100-200 ten thousand times, and the service life of the die can not be reached.
It is known that the service life of the nitrogen spring is mainly influenced by an excellent sealing element and a good self-lubricating structure, and most of the sealing elements are made of several known brands worldwide, so that the important point is the design structure of the nitrogen spring, and the important point in the design of the nitrogen spring structure is the good self-lubricating structure.
At present, most of domestic manufacturers use supporting rings or guiding belts with self-lubricating function. The materials can not support the nitrogen spring to achieve the use times (namely the service life) of millions or more, so the invention adopts a liquid lubrication oil mist mode to further lubricate on the basis of the original self-lubrication guide belt or support ring, and the generated oil mist can be directly lubricated to the sealing ring.
Disclosure of Invention
The embodiment of the invention aims to provide a nitrogen spring with a self-lubricating function, and aims to solve the problems of the prior art determined in the background art.
The embodiment of the invention is realized in such a way, the nitrogen spring with the self-lubricating function comprises a cylinder body and a piston rod, wherein the cylinder body comprises a cylinder barrel and a guide cylinder sleeve arranged at the top of the cylinder barrel, a base is arranged at the bottom of the cylinder barrel, the piston rod is movably arranged on the guide cylinder sleeve and can slide relatively along the top of the guide cylinder sleeve, a guide ring for guiding the piston rod and a movable sealing piston are respectively arranged at the connection position of the piston rod and the guide cylinder sleeve, and the nitrogen spring further comprises:
The base is of a hollow structure, the air inflation assembly is arranged at the bottom of the base in a sealing mode, and the air inflation assembly can be arranged in a detachable mode;
The bottom of the guide cylinder sleeve and the top of the base are fixed in the cylinder barrel in a sealing way, a second inner cavity is formed between the connecting position of the guide cylinder sleeve and the base and the inner wall of the cylinder barrel, a first inner cavity is formed between the bottom part of the piston rod and the top hollow part of the base on the inner wall of the guide cylinder sleeve, and the capillary holes are formed in the base and are used for communicating the first inner cavity and the second inner cavity;
Part of lubricating oil is arranged in the first inner cavity, when high-pressure nitrogen is injected into the first inner cavity through the inflation assembly, the pressure between the first inner cavity and the second inner cavity is kept equal, and the lubricating oil submerges the capillary holes;
When the piston rod is compressed by external force and rapidly descends, the space of the first inner cavity is reduced, and the pressure in the first inner cavity is suddenly increased;
When the piston rod is released by external force and quickly rises, the space of the first inner cavity is increased, and the pressure in the first inner cavity is suddenly reduced.
Preferably, a sealing check ring is further arranged at the connection position of the piston rod and the guide cylinder sleeve, and the sealing check ring is arranged at the top position of the piston seal.
Preferably, the inner wall of the guide cylinder sleeve and the position close to the outer side are sequentially provided with an inner dustproof ring and a supporting ring, the inner dustproof ring and the supporting ring are respectively sleeved on the piston rod, and the inner dustproof ring and the supporting ring are sequentially distributed from outside to inside.
Preferably, the guide cylinder sleeve is connected to the top of the cylinder barrel through a first thread pair and a static sealing one.
Preferably, the inflation assembly comprises:
the inflatable one-way valve is arranged in the hollow part of the base and is used for being connected in the forward direction and cut off in the reverse direction when gas is injected;
And the sealing screw is used for sealing the inflatable one-way valve in the hollow structure.
Preferably, the base is connected to the bottom of the cylinder barrel through a second thread pair and a static seal.
Preferably, the connection position between the bottom of the guide cylinder sleeve and the top of the base is fixed through two sealing of static seal.
Preferably, a limiting check ring is arranged at the top of the piston rod and used for preventing the piston rod from falling into the guide cylinder sleeve before being inflated.
According to the nitrogen spring with the self-lubricating function, when the piston rod is stressed and rapidly descends, generated oil mist is attached to the wall of the second inner cavity, particularly the inner wall of the cylinder barrel, so that a good cooling effect can be achieved, otherwise, when the piston rod is released by external force and rapidly ascends, the generated oil mist is attached to the piston seal and is guided to the inner wall of the cylinder barrel, one lubrication cycle is completed, and a good lubrication environment is provided for the next descending of the piston rod, so that the service life of the piston seal (namely the service life of the nitrogen spring) is prolonged by reducing the friction coefficient of the piston seal and the inner wall of the guide cylinder barrel in operation and reducing the internal temperature.
Drawings
FIG. 1 is a front view of a nitrogen spring with self-lubricating function according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a downlink structure according to an embodiment of the present invention;
Fig. 3 is a schematic structural diagram of an uplink according to an embodiment of the present invention.
In the drawing, 1, a piston rod, 2, a guide cylinder sleeve, 3, a cylinder barrel, 4, a base, 5, a first static seal, 6, a second static seal, 7, a third static seal, 8, an inner dustproof ring, 9, a guide ring, 10, a sealing check ring, 11, a piston seal, 12, lubricating oil, 13, capillary holes, 14, a supporting ring, 15, an inflatable check valve, 16, a sealing screw, 17, a limiting check ring, 18, a first inner cavity, 19 and a second inner cavity.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
As shown in fig. 1-3, a structure diagram of a nitrogen spring with a self-lubricating function according to an embodiment of the present invention includes a cylinder body and a piston rod 1, the cylinder body includes a cylinder barrel 3 and a guide cylinder sleeve 2 installed at the top of the cylinder barrel 3, a base 4 is installed at the bottom of the cylinder barrel 3, the piston rod 1 is movably disposed on the guide cylinder sleeve 2 and can slide relatively along the top of the guide cylinder sleeve 2, a connection position between the piston rod 1 and the guide cylinder sleeve 2 is respectively provided with a guide ring 9 for guiding the piston rod 1 and a piston seal 11 for movable sealing, and the structure diagram further includes:
The base 4 is of a hollow structure, the air inflation assembly is arranged at the bottom of the base 4 in a sealing manner, and the air inflation assembly is detachably arranged;
The bottom of the guide cylinder sleeve 2 and the top of the base 4 are fixed in the cylinder barrel 3 in a sealing way, a second inner cavity 19 is formed between the connecting position of the guide cylinder sleeve 2 and the base 4 and the inner wall of the cylinder barrel 3, a first inner cavity 18 is formed between the bottom part of the guide cylinder sleeve 2 and the top hollow part of the base 4, and the capillary holes 13 are formed in the base 4 and are used for communicating the first inner cavity 18 and the second inner cavity 19;
A part of lubricating oil 12 is arranged in the first inner cavity 18, when high-pressure nitrogen is injected into the first inner cavity 18 through the inflation assembly, the pressure between the first inner cavity 18 and the second inner cavity 19 is kept equal, and the lubricating oil 12 submerges the capillary holes 13;
When the piston rod 1 is compressed by external force and rapidly descends, the space of the first inner cavity 18 becomes smaller, and the pressure in the first inner cavity 18 is suddenly increased;
When the piston rod 1 is released by external force and rapidly rises, the space of the first inner cavity 18 is increased, and the pressure in the first inner cavity 18 is suddenly reduced:
In practical use of the embodiment, when the piston rod 1 is forced to quickly descend, the compression of the cylinder space becomes smaller, so that the internal pressure of the first inner cavity 18 suddenly increases, and because the lubricating oil submerges the capillary holes 13, a large amount of oil mist is generated when the gas enters the second inner cavity 19 through the capillary holes 13, the generated oil mist adheres to the cavity wall of the second inner cavity 19, especially the inner wall of the cylinder 3 (as shown in fig. 2), so that a good cooling effect can be achieved, whereas when the external force releases the piston rod 1 to quickly rise, the space of the first inner cavity 18 increases, so that the pressure of the first inner cavity is quickly reduced, so that the high pressure in the second inner cavity 19 quickly flows into the first inner cavity 18 through the capillary holes 13, and a large amount of oil mist is formed, and the generated oil mist adheres to the piston seal 11 and the inner wall of the guide cylinder sleeve 2 (as shown in fig. 3), so that a good lubrication cycle is completed, so that the service life of the piston seal 11 is improved by reducing the friction coefficient of the piston seal 11 and the inner wall of the guide cylinder sleeve 2 in the next descending of the piston rod 1, and the service life of the nitrogen gas (namely the service life of the spring is prolonged).
As shown in fig. 1-3, as a preferred embodiment of the invention, the connection position of the piston rod 1 and the guide cylinder sleeve 2 is also provided with a sealing collar 10, said sealing collar 10 being arranged at the top position of the piston seal 11.
In practical application, in combination with the above embodiment, the piston rod 1 penetrates through the guide cylinder sleeve 2 from bottom to top, and the guide ring 9, the sealing retainer ring 10 and the piston seal 11 are sequentially arranged at the piston position of the piston rod 1 and on the inner wall of the guide cylinder sleeve 2 from top to bottom.
As shown in fig. 1-3, as another preferred embodiment of the present invention, an inner dust ring 8 and a supporting ring 14 are sequentially installed on the inner wall of the guide cylinder sleeve 2 and near the outer side, and the inner dust ring 8 and the supporting ring 14 are respectively sleeved on the piston rod 1 and are sequentially arranged from outside to inside.
In practical application, the inner dustproof ring 8 and the supporting ring 14 play roles in preventing dust and supporting the piston rod 1.
As shown in fig. 1-3, as another preferred embodiment of the present invention, the guide cylinder sleeve 2 is connected to the top of the cylinder tube 3 by a first screw pair and a static seal 5.
In practical application, the guide cylinder sleeve 2 is conveniently and stably sealed and fixed on the top of the cylinder barrel 3 through the first thread pair and the static seal one 5.
As shown in fig. 1 to 3, as another preferred embodiment of the present invention, the air charging assembly includes:
The inflatable one-way valve 15 is arranged in the hollow part of the base 4, and the inflatable one-way valve 15 is used for being connected in the forward direction and cut off in the reverse direction when gas is injected;
and a sealing screw 16 for sealing the air-filled check valve 15 within the hollow structure.
The embodiment provides a working method of an inflation assembly, which comprises the following steps:
S01, injecting a certain amount of lubricating oil 12 into the first inner cavity 18;
s02, filling an inflation one-way valve 15;
S03, filling calibrated high-pressure nitrogen through the inflation check valve 15, so that the connection pressure between the first inner cavity 18 and the second inner cavity 19 is equal due to the capillary holes 13;
S04, a sealing screw 16 is installed.
As shown in fig. 1-3, as another preferred embodiment of the invention, the base 4 is connected to the bottom of the cylinder 3 by a second screw pair and a static seal three 7.
In practical application, the base 4 is conveniently and stably connected to the bottom of the cylinder barrel 3 in a sealing manner through the second thread pair and the static seal three 7.
As shown in fig. 1-3, as another preferred embodiment of the present invention, the connection position between the bottom of the guide cylinder sleeve 2 and the top of the base 4 is sealed and fixed by a static seal two 6.
In practical application, the bottom of the guide cylinder sleeve 2 and the top of the base 4 form a plug-in matching structure, and the step positions of the static seal two 6 pairs of plug-in structures are sealed, so that the first inner cavity 18 and the first inner cavity 18 can only be communicated through the capillary holes 13.
As shown in fig. 1-3, as another preferred embodiment of the present invention, a limit check ring 17 is disposed at the top of the piston rod 1, and the limit check ring 17 is used for preventing the piston rod 1 from falling into the guide cylinder sleeve 2 before being inflated.
In practical application, the safety can be improved through the arrangement of the limiting retainer ring 17, and the piston rod 1 is effectively prevented from falling into the guide cylinder sleeve 2 before being inflated.
In the above embodiment of the present invention, a nitrogen spring with a self-lubricating function is provided, when the piston rod 1 is forced to rapidly descend, the compression of the cylinder space becomes small, so that the internal pressure of the first inner cavity 18 suddenly increases, because the lubricating oil submerges the capillary holes 13, a large amount of oil mist is generated when the gas enters the second inner cavity 19 through the capillary holes 13, the generated oil mist adheres to the cavity wall of the second inner cavity 19, especially the inner wall of the cylinder 3, so that a good cooling effect can be achieved, otherwise, when the piston rod 1 is released by external force to rapidly ascend, the space of the first inner cavity 18 increases, so that the pressure of the first inner cavity 18 rapidly decreases, thereby the high-pressure gas in the second inner cavity 19 rapidly flows into the first inner cavity 18 through the capillary holes 13, and forms a large amount of oil mist, the generated oil mist adheres to the piston seal 11 and is guided to the inner wall of the cylinder liner 2, a good lubrication environment is provided for the next descending of the piston rod 1, and the service life of the piston seal 11 (i.e. the nitrogen spring service life is prolonged by reducing the friction coefficient of the piston seal 11 and the inner wall of the guide cylinder liner 2).
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (2)
1. The utility model provides a nitrogen spring with self-lubricating function, includes cylinder body and piston rod, the cylinder body includes the cylinder and installs the direction cylinder liner at the cylinder top, the base is installed to the cylinder bottom, the piston rod activity sets up on the direction cylinder liner and can take place relative slip along direction cylinder liner top, the piston rod is provided with the guide ring and the movable seal's that are used for the piston rod direction respectively with the hookup location of direction cylinder liner piston seal, its characterized in that still includes:
The base is of a hollow structure, the air inflation assembly is arranged at the bottom of the base in a sealing mode, and the air inflation assembly can be arranged in a detachable mode;
The bottom of the guide cylinder sleeve and the top of the base are fixed in the cylinder barrel in a sealing way, a second inner cavity is formed between the connecting position of the guide cylinder sleeve and the base and the inner wall of the cylinder barrel, a first inner cavity is formed between the bottom part of the piston rod and the top hollow part of the base on the inner wall of the guide cylinder sleeve, and the capillary holes are formed in the base and are used for communicating the first inner cavity and the second inner cavity;
Part of lubricating oil is arranged in the first inner cavity, when high-pressure nitrogen is injected into the first inner cavity through the inflation assembly, the pressure between the first inner cavity and the second inner cavity is kept equal, and the lubricating oil submerges the capillary holes;
When the piston rod is compressed by external force and rapidly descends, the space of the first inner cavity is reduced, and the pressure in the first inner cavity is suddenly increased;
When the piston rod is released by external force and quickly rises, the space of the first inner cavity is increased, and the pressure in the first inner cavity is suddenly reduced;
The connecting position of the piston rod and the guide cylinder sleeve is also provided with a sealing check ring, and the sealing check ring is arranged at the top position of the piston seal;
an inner dust ring and a supporting ring are sequentially arranged on the inner wall of the guide cylinder sleeve and close to the outer side, and are respectively sleeved on the piston rod and sequentially distributed from outside to inside;
the guide cylinder sleeve is connected to the top of the cylinder barrel through a first thread pair and a static seal one;
the inflation assembly includes:
the inflatable one-way valve is arranged in the hollow part of the base and is used for being connected in the forward direction and cut off in the reverse direction when gas is injected;
sealing screw for sealing the air-filled one-way valve in the hollow structure
The base is connected to the bottom of the cylinder barrel through a second thread pair and a static seal III;
the connection position between the bottom of the guide cylinder sleeve and the top of the base is fixed through static seal two seals.
2. The nitrogen spring with the self-lubricating function according to claim 1, wherein a limiting check ring is arranged at the top of the piston rod and used for preventing the piston rod from falling into the guide cylinder sleeve before being inflated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111464105.9A CN114033825B (en) | 2021-12-02 | 2021-12-02 | A nitrogen spring with self-lubricating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111464105.9A CN114033825B (en) | 2021-12-02 | 2021-12-02 | A nitrogen spring with self-lubricating function |
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| Publication Number | Publication Date |
|---|---|
| CN114033825A CN114033825A (en) | 2022-02-11 |
| CN114033825B true CN114033825B (en) | 2025-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111464105.9A Active CN114033825B (en) | 2021-12-02 | 2021-12-02 | A nitrogen spring with self-lubricating function |
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| CN216555106U (en) * | 2021-12-02 | 2022-05-17 | 深圳市铭昊五金模具有限公司 | Nitrogen spring with self-lubricating function |
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|---|---|---|---|---|
| GB1215474A (en) * | 1966-12-29 | 1970-12-09 | Applied Power Ind Inc | Hydraulic damping device |
| US6390457B1 (en) * | 2001-02-14 | 2002-05-21 | Ralph Roper | Soft-start, soft-return gas spring |
| FR2965602B1 (en) * | 2010-10-04 | 2013-08-16 | Electronique Ind De L Ouest Tronico | TUBE FOR TRANSPORTING SUBSTANCES AND ASSEMBLING TUBES THEREFOR |
| CN208764214U (en) * | 2018-09-18 | 2019-04-19 | 李小兰 | A kind of time lagged type nitrogen gas spring |
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2021
- 2021-12-02 CN CN202111464105.9A patent/CN114033825B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206842A (en) * | 2019-06-06 | 2019-09-06 | 苗军 | A kind of single cylinder cylinder double chamber hydragas spring |
| CN216555106U (en) * | 2021-12-02 | 2022-05-17 | 深圳市铭昊五金模具有限公司 | Nitrogen spring with self-lubricating function |
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| CN114033825A (en) | 2022-02-11 |
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