CN220101889U - Low temperature rise type nitrogen spring - Google Patents
Low temperature rise type nitrogen spring Download PDFInfo
- Publication number
- CN220101889U CN220101889U CN202320990568.7U CN202320990568U CN220101889U CN 220101889 U CN220101889 U CN 220101889U CN 202320990568 U CN202320990568 U CN 202320990568U CN 220101889 U CN220101889 U CN 220101889U
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- CN
- China
- Prior art keywords
- cylinder body
- piston rod
- low temperature
- nitrogen spring
- temperature rise
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 29
- 238000003860 storage Methods 0.000 claims abstract description 18
- 239000000428 dust Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 11
- 239000005068 cooling lubricant Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 20
- 238000001816 cooling Methods 0.000 abstract description 15
- 239000010687 lubricating oil Substances 0.000 abstract description 15
- 230000008859 change Effects 0.000 abstract description 3
- 230000003746 surface roughness Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 239000004519 grease Substances 0.000 description 6
- 230000001050 lubricating effect Effects 0.000 description 5
- 239000003595 mist Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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- Compressor (AREA)
Abstract
The utility model relates to the field of nitrogen springs, in particular to a low-temperature-rise nitrogen spring which comprises a cylinder body and a piston rod, wherein the piston rod is in sliding connection with the cylinder body, at least two guide rings are arranged on the cylinder body and are in contact with the piston rod, an oil storage tank is further arranged on the cylinder body, cooling lubricating oil is arranged in the oil storage tank, an air passage is arranged at the bottom of the cylinder body, and an air pipe is arranged at an opening part of the air passage, which is connected with the inside of the cylinder body. According to the utility model, the oil storage tank and the cooling lubricating oil are arranged, so that the lubricity is improved, the surface roughness requirement of a piston rod is reduced, and the temperature of the piston rod during operation is reduced; the utility model also reduces the clearance change of the cylinder body and the piston rod during movement by arranging at least two guide rings, improves the tightness and reduces the outflow of cooling lubricating oil.
Description
Technical Field
The utility model relates to the field of nitrogen springs, in particular to a low-temperature-rise nitrogen spring.
Background
The special nitrogen spring for the die is a novel elastic component taking high-pressure nitrogen as a working medium, and has the advantages of small volume, large elasticity, long stroke, stable work, precise manufacture, long service life (one million times), smooth elastic curve, no need of pre-tightening and the like.
The existing nitrogen spring mainly comprises a cylinder body, a piston rod, a bushing and a sealing piece. Grease is adopted to lubricate the inside of the nitrogen spring bushing, grease seeps out of the bushing along with the reciprocating motion of the piston rod during spring operation, performance and appearance are affected on stamping parts, and after grease is completely consumed, dry friction during the operation of the piston rod enables the operation temperature of the spring to be too high, so that the service life of the spring is greatly reduced. Therefore, there is a need for an improvement in such a structure to overcome the above-mentioned drawbacks.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a low temperature rise type nitrogen spring, which is realized by the following technical scheme:
the utility model provides a low temperature rise formula nitrogen gas spring, includes cylinder body and piston rod, the piston rod with cylinder body sliding connection, be provided with two at least guide rings on the cylinder body, just the guide ring with the piston rod contact, still be provided with the oil storage tank on the cylinder body, be provided with cooling lubricating oil in the oil storage tank, the bottom of cylinder body is provided with the air flue, the air flue with cylinder body internal connection's opening part is provided with the breather pipe.
The technical scheme is as follows: the cylinder body is matched with the piston rod and is used for forming a cavity with changeable volume, and the basic function of the nitrogen piston can be realized by filling nitrogen into the cavity; the guide rings are arranged for guiding the movement direction of the piston rod, and the number of the guide rings is at least two, so that the shaking of the piston rod is reduced, the gap change between the cylinder body and the piston rod in the movement process is reduced, and the tightness is improved; the oil storage tank is used for setting cooling lubricating oil and can be used for allowing the cooling lubricating oil to flow back when the nitrogen spring is static; the arrangement of the cooling lubricating oil not only increases the lubricity and reduces the surface roughness requirement of the piston rod, but also enables heat generated by friction between the cylinder body and the piston rod to be conducted away more quickly when the piston runs, and reduces the temperature when the piston runs; the air passage is used for periodically supplementing the filled nitrogen; the vent pipe is arranged, so that the outlet position of the air passage is lifted, and the cooling lubricating oil arranged in the cylinder body is prevented from being deposited in the valve core hole after flowing out of the air passage.
The utility model is further provided with: the cylinder body includes the bush, the bush sets up on the inner wall of cylinder body, just the piston rod with bush sliding connection, the oil storage tank with the guide ring all set up on the interior diameter face of bush.
The technical scheme is as follows: the arrangement of the bushing is such that wear mainly occurs on the inner face of the bushing, and further such that the long-term accuracy of use of the product can be kept stable by periodic replacement of the bushing.
The utility model is further provided with: and a sealing ring is further arranged on the inner diameter surface of the bushing, and the sealing ring is arranged on one side of the bushing, which is close to the bottom of the cylinder body.
The technical scheme is as follows: the sealing ring is used for avoiding dry grinding phenomenon of next operation caused by the fact that cooling lubricating oil in the oil storage tank flows into the cavity in the cylinder body when the nitrogen spring is in a static state.
The utility model is further provided with: and a dust ring is further arranged on the inner diameter surface of the bushing, and the dust ring is arranged on one side, away from the bottom of the cylinder body, of the bushing.
The technical scheme is as follows: the dust ring is used for placing dust between the piston rod and the bushing, so that the bushing is accelerated to wear; it is also possible to prevent the lubricant from overflowing with the reciprocating movement of the piston rod.
The utility model is further provided with: the air flue comprises a horizontal section and a vertical section, the air pipe is communicated with the vertical section, and a valve core is arranged in the horizontal section.
The technical scheme is as follows: the valve core is used for inflating and avoiding gas leakage.
The utility model is further provided with: and a plug is detachably arranged at the opening of the horizontal section.
The technical scheme is as follows: the plug is used for preventing dust and moisture and slowing down the damage of the valve core.
The utility model discloses a low temperature rise type nitrogen spring, which is compared with the prior art:
1. compared with solid lubricating grease, the lubricating grease provided by the utility model has the advantages that the lubricating property is improved, the surface roughness requirement of the piston rod is reduced, the heat generated by friction between the cylinder body and the piston rod can be conducted away more quickly when the piston runs, and the temperature of the lubricating grease is reduced;
2. according to the utility model, by arranging at least two guide rings, the shaking of the piston rod is reduced, so that the gap change of the cylinder body and the piston rod during movement is reduced, the unbalanced load resistance is improved, and the outflow of cooling lubricating oil is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of the present utility model;
fig. 2 is an enlarged view of the utility model at a.
Corresponding part names are indicated by numerals and letters in the drawings: 10-cylinder body; 101-a bushing; 101 a-an oil reservoir; 102-airway; 20-a piston rod; 30-a guide ring; 40-a vent pipe; 50-sealing rings; 60-dust ring; 70-valve core; 80-plug.
Detailed Description
The following describes in detail the examples of the present utility model, which are implemented on the premise of the technical solution of the present utility model, and detailed embodiments and specific operation procedures are given, but the scope of protection of the present utility model is not limited to the following examples.
As shown in fig. 1-2, the low temperature rise nitrogen spring provided by the utility model comprises a cylinder body 10 and a piston rod 20, wherein the piston rod 20 is in sliding connection with the cylinder body 10, at least two guide rings 30 are arranged on the cylinder body 10, the guide rings 30 are in contact with the piston rod 20, an oil storage tank 101a is further arranged on the cylinder body 10, cooling lubricating oil is arranged in the oil storage tank 101a, an air passage 102 is arranged at the bottom of the cylinder body 10, and an air pipe 40 is arranged at an opening part of the air passage 102 connected with the interior of the cylinder body 10. Wherein the upper end of the cylinder body 10 is opened, and the lower end is sealed; the cross section of the piston rod 20 is T-shaped, and the horizontal part of the piston rod is arranged close to the bottom of the cylinder body 10, so that the piston rod has a limiting effect; the included angle between the side wall and the bottom of the oil storage tank 101a is greater than 90 degrees, so as to facilitate oil backflow.
As shown in fig. 1-2, the cylinder 10 of the present utility model comprises a liner 101, the liner 101 is disposed on an inner wall of the cylinder 10, the piston rod 20 is slidably connected with the liner 101, and the oil storage tank 101a and the guide ring 30 are disposed on an inner diameter surface of the liner 101. Wherein the bushing 101 is fixedly connected with the cylinder body 10; the bushing 101 is provided with a plurality of placement grooves, and the guide ring 30 is arranged in the placement grooves; the hardness of the bushing 101 is less than the hardness of the piston rod 20, so that wear mostly occurs on the bushing 101; preferably, the hardness of the bush 101 is HB245-285, the hardness of the piston rod 20 is HV600, and the hardness of the cylinder 10 is HB245-285.
As shown in fig. 1-2, in the low temperature rise nitrogen spring provided by the utility model, a sealing ring 50 is further arranged on the inner diameter surface of the bushing 101, and the sealing ring 50 is arranged on one side of the bushing 101 close to the bottom of the cylinder body 10. The sealing ring 50 is a U-shaped ring, and the opening of the "U" shape faces the bottom of the cylinder 10.
As shown in fig. 1-2, in the low temperature rise nitrogen spring provided by the utility model, a dust ring 60 is further arranged on the inner diameter surface of the bushing 101, and the dust ring 60 is arranged on one side of the bushing 101 away from the bottom of the cylinder body 10. The dust ring 60 is a double-lip dust ring, and two lips of the double-lip dust ring are located on the inner surface.
As shown in fig. 1-2, the low temperature rise nitrogen spring provided by the utility model, the air passage 102 comprises a horizontal section and a vertical section, the air pipe 40 is communicated with the vertical section, and the horizontal section is internally provided with a valve core 70. The bottom of the cavity, which is called by the bushing 101, the cylinder body 10 and the piston rod 20, is also provided with cooling lubricating oil, so that oil mist is formed in the cavity, thereby conducting heat when the piston rod 20 descends and lubricating the piston rod 20.
As shown in fig. 1-2, in the low temperature rise type nitrogen spring provided by the utility model, a plug 80 is detachably arranged at the opening of the horizontal section. Wherein, the opening of horizontal segment can set up the counter bore, the end cap 80 sinks into the counter bore, reduces the possibility that end cap 80 knocks into.
The working principle of the utility model is as follows:
a) When the nitrogen spring works, the piston rod is pressed downwards;
b) The cooling lubricating oil in the oil storage tank uniformly lubricates the piston rod;
c) After the piston rod reaches the low position, the force generated by compression of the nitrogen is balanced with the pressure;
d) The piston rod is static, at the moment, the oil mist of the cavity conducts away the heat of the piston rod, and at the same time, part of the oil mist is adsorbed to the piston rod; e) When the piston rod goes up, the oil mist plays a role in lubrication and is blocked by the sealing ring;
f) The cooling lubricating oil of the piston rod is blocked by the dust ring;
g) The piston rod reaches a high position and is not in a working state, and cooling lubricating oil at the upper part of the piston rod flows back into the oil storage tank.
The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (5)
1. The utility model provides a low temperature rise formula nitrogen spring, includes cylinder body (10) and piston rod (20), piston rod (20) with cylinder body (10) sliding connection, its characterized in that: be provided with two at least guide rings (30) on cylinder body (10), just guide ring (30) with piston rod (20) contact, still be provided with oil storage tank (101 a) on cylinder body (10), be provided with cooling lubricant in oil storage tank (101 a), the bottom of cylinder body (10) is provided with air flue (102), air flue (102) with cylinder body (10) internally connected's opening part is provided with breather pipe (40), the lateral wall of oil storage tank (101 a) is greater than 90 degrees with the contained angle of bottom, cylinder body (10) include bush (101), bush (101) set up on the inner wall of cylinder body (10), just piston rod (20) with bush (101) sliding connection, oil storage tank (101 a) all set up with guide ring (30) on the inner diameter face of bush (101).
2. A low temperature rise nitrogen spring as claimed in claim 1, wherein: and a sealing ring (50) is further arranged on the inner diameter surface of the bushing (101), and the sealing ring (50) is arranged on one side, close to the bottom of the cylinder body (10), of the bushing (101).
3. A low temperature rise nitrogen spring as claimed in claim 2, wherein: the inner diameter surface of the bushing (101) is also provided with a dust ring (60), and the dust ring (60) is arranged on one side of the bushing (101) away from the bottom of the cylinder body (10).
4. A low temperature rise nitrogen spring according to claim 3, wherein: the air passage (102) comprises a horizontal section and a vertical section, the air pipe (40) is communicated with the vertical section, and a valve core (70) is arranged in the horizontal section.
5. The low temperature rise nitrogen spring of claim 4, wherein: and a plug (80) is detachably arranged at the opening of the horizontal section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320990568.7U CN220101889U (en) | 2023-04-27 | 2023-04-27 | Low temperature rise type nitrogen spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320990568.7U CN220101889U (en) | 2023-04-27 | 2023-04-27 | Low temperature rise type nitrogen spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220101889U true CN220101889U (en) | 2023-11-28 |
Family
ID=88865302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320990568.7U Active CN220101889U (en) | 2023-04-27 | 2023-04-27 | Low temperature rise type nitrogen spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220101889U (en) |
-
2023
- 2023-04-27 CN CN202320990568.7U patent/CN220101889U/en active Active
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| GR01 | Patent grant |