CN208331092U - Novel oil gas spring - Google Patents
Novel oil gas spring Download PDFInfo
- Publication number
- CN208331092U CN208331092U CN201821014578.2U CN201821014578U CN208331092U CN 208331092 U CN208331092 U CN 208331092U CN 201821014578 U CN201821014578 U CN 201821014578U CN 208331092 U CN208331092 U CN 208331092U
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- Prior art keywords
- piston
- piston rod
- cylinder barrel
- annular groove
- protrusion
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- Expired - Fee Related
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims description 15
- 238000013016 damping Methods 0.000 claims description 14
- 238000007667 floating Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 239000003921 oil Substances 0.000 description 30
- 239000007789 gas Substances 0.000 description 28
- 239000000306 component Substances 0.000 description 17
- 239000010720 hydraulic oil Substances 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The utility model relates to a kind of Novel oil gas springs to solve the flexible lesser technical problem of stroke of hydro-pneumatic spring in the prior art.The flexible stroke of the Novel oil gas spring of the utility model is equal to the distance of stretch out and draw back of piston rod, and in the telescopic process of piston rod, the outer peripheral surface of piston component and the inner peripheral surface of seal assembly play the guiding role, and is slide-and-guide of the piston rod in cylinder barrel.The inner peripheral surface of piston component and the outer peripheral surface of seal assembly are not undertake guiding role, so the setting of the first annular groove and the second annular groove will not reduce the length of guide section in piston rod telescopic process, will not influence steering capability.But during piston rod stretches out, piston component upper surface is moved to flushed with seal assembly lower end surface after, first protrusion can be inserted into the second annular groove, the second protrusion can be inserted into the first annular groove and piston rod is made to can continue to move upwards, and effectively increase the flexible stroke of hydro-pneumatic spring.
Description
Technical field
The utility model relates to a kind of Novel oil gas springs.
Background technique
Hydro-pneumatic spring is the core component in automobile oil gas suspension system, and one end is hinged on car body by oscillating bearing
The upper, other end is hinged on wheel by oscillating bearing and fastens, and plays vibration damping and lifting car body.But it is universal in existing hydro-pneumatic spring
The problem is that hydro-pneumatic spring structure size is larger, cause installation limited.So not influencing hydro-pneumatic spring steering capability
Under the premise of can increase the hydro-pneumatic spring Structural Development of stroke and just seem particularly important.
Utility model content
It is flexible to solve hydro-pneumatic spring in the prior art that the purpose of this utility model is to provide a kind of Novel oil gas springs
The lesser technical problem of stroke.
To achieve the above object, the Novel oil gas spring of the utility model uses following technical scheme:
Novel oil gas spring, including cylinder barrel, piston rod and piston component are mounted on cylinder to the piston component pilot seal
In cylinder, piston rod extends upward and is fixed on piston component, and the upper end of cylinder barrel is provided with seal assembly, and seal assembly is guaranteeing
Again for piston rod along its guiding sliding while cylinder barrel inner space is isolated from the outside world, the lower end diameter of seal assembly is less than cylinder
Cylinder internal diameter and form the first protrusion, form the first annular groove between the first protrusion and cylinder barrel, the upper end setting of piston component
There is the second annular groove for the insertion of the first protrusion, the setting of the second annular groove is so that piston component upper end forms pluggable first
The second protrusion in annular groove, the inside and outside diameter of the second annular groove are all larger than the outer diameter of piston rod.
Piston rod is hollow tube-shape, is equipped with to piston rod inner pilot seal floating piston, piston component and cylinder barrel it
Between define A chamber, piston rod inner space is separated into mutually independent B chamber and C chamber by floating piston, be located at sealing group
Gap forms D chamber between piston rod and cylinder barrel between part and piston component, is provided with check valve and damping on piston component
Hole, inlet communication A chamber, the outlet B chamber of check valve, the both ends of damping hole are respectively communicated with A chamber and D chamber.
The height of first protrusion is equal to the depth of the second annular groove.
The outer diameter of first protrusion is adapted to the outer diameter of the second annular groove, and taper expansion is provided with outside the notch of the second annular groove
Oral area.
The upper end of piston rod is provided with the upper hinge seat for connection body, offered on upper hinge seat connection C chamber with
The gas access way of extraneous gas source is provided with gas control valve on gas access way；The lower end of cylinder barrel is provided with for connecting
The lower hinge seat of cock wheel system offers the oil liquid access way of connection A chamber and external oil sources on lower hinge seat.
The piston component includes piston, damper and the tight end cap of back, carries on the back tight end cap and damper passes through and is fixedly clamped
Mode is mounted on the lower end of piston, carries on the back and offers inner threaded surface on tight end cap, the external screw thread being adapted to it is offered on damper
Face, damper are threadedly secured on the tight end cap of back, and damper it is opposite with the tight end cap of back both ends of the surface it is corresponding with piston simultaneously
End surface shape is adapted to and is clamped on piston；The internal diameter of piston upper end is greater than the outer diameter of piston rod and forms second protrusion
And second annular groove.
Carrying on the back has the ring cavity installed for piston rod between tight end cap and piston, set on inner wall corresponding with ring cavity on piston
It is equipped with the inner threaded surface for the installation of piston-rod lower end screw thread.
The seal assembly includes guide sleeve, end cap and locking nut, and guide sleeve is sealingly mounted in cylinder barrel, stretches out cylinder
The part protrusion of cylinder is provided with the flange that diameter is less than cylinder barrel upper end diameter, offers on cylinder barrel outer peripheral surface for end cap and locking screw
The external screw thread face of box thread installation, the upper end of end cap are provided with the block machine for cooperating with flange upper surface block, and block machine will be led
Cylinder barrel upper end is pressed abd fixed on to set；The lower end outer diameter of guide sleeve is less than internal diameter of cylinder and forms first protrusion and first
Annular groove.
The middle part of guide sleeve is arranged in the flange, and guide sleeve is located at its outer diameter of part above flange less than the block machine
Internal diameter.
The scalable dust cover that is flexible and changing length with piston rod is provided between upper hinge seat and cylinder barrel upper end,
The piston rod outer peripheral surface that scalable dust cover is used to that impurity to be prevented to be adhered to stretching.
The beneficial effects of the utility model are as follows: the flexible stroke of the Novel oil gas spring of the utility model is equal to piston rod
Distance of stretch out and draw back, the outer peripheral surface of piston component play the guiding role in the telescopic process of piston rod, be piston rod in cylinder barrel
Slide-and-guide, inner peripheral surface and the piston rod of piston component move synchronously, and do not undertake guiding role.The inner peripheral surface of seal assembly simultaneously
It play the guiding role, is the slide-and-guide of piston rod, position is fixed between the outer peripheral surface and cylinder barrel of seal assembly, is not undertaken guiding and is made
With.So the setting of the first annular groove and the second annular groove will not reduce the length of guide section in piston rod telescopic process, will not influence
Steering capability.Simultaneously piston rod stretch out during, piston component upper surface is moved to flushed with seal assembly lower end surface after,
First protrusion can be inserted into the second annular groove, the second protrusion can be inserted into the first annular groove and piston rod can continue to upwards
Movement, when the slot bottom for the first annular groove of upper-end contact that the slot bottom of the second annular groove contacts the first protrusion or the second protrusion
Just stop, effectively increasing the flexible stroke of hydro-pneumatic spring.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the Novel oil gas spring of the utility model；
Fig. 2 is the partial enlarged view being equipped at seal assembly position in Fig. 1；
Fig. 3 is the partial enlarged view being equipped at piston component position in Fig. 1.
Specific embodiment
The specific structure of the Novel oil gas spring of the utility model is as shown in Figure 1 to Figure 3, the cylinder barrel 1 including both ends open,
The lower end of cylinder barrel 1 is provided with lower hinge seat 8, and lower hinge seat 8 blocks the lower ending opening of cylinder barrel 1.It is provided with and is used on lower hinge seat 8
It is mounted on the oscillating bearing that wheel is fastened, oil liquid access way 81 is also provided on lower hinge seat 8, is provided on oil liquid access way
Oil liquid control valve, when oil liquid control valve is opened, external oil sources is connected to 1 inner space of cylinder barrel.General external oil sources is oil pump,
Oil pump can also be used at this time as oil liquid control valve and save the oil liquid control valve on oil liquid access way 81.
Piston rod 4 is fitted in cylinder barrel 1, piston rod 4 is the tube body of both ends open, and piston rod 4 is inserted into the lower end in cylinder barrel 1
It is fixed with piston component 2, piston component 2 includes damper 21, the tight end cap 22 of back and piston 23.Piston 23 and 1 inner wall of cylinder barrel
It can also be along the inner wall guiding movement of cylinder barrel 1 while sealing cooperation.Floating piston 5, floating piston 5 are fitted in piston rod 4
It can also be along the inner wall guiding movement of piston rod 5 while sealing and cooperate with 4 inner wall of piston rod.The outside wall surface of floating piston 5
On be spaced apart along its axis direction and be equipped with multiple tracks annular groove, embedded with for realizing floating piston 5 and piston rod 4 in each annular groove
The sealing element 34 of inner wall sealing cooperation.1 inner space of cylinder barrel of 23 lower section of piston is A chamber, and space is floated in piston rod 4
Piston 5 is divided into independent B chamber and C chamber.The upper end of cylinder barrel 1 is provided with seal assembly 3, and piston rod 4 can be along sealing group
3 guiding movement of part.Piston rod 4 between seal assembly 3 and piston component 2 and formation D chamber in gap between cylinder barrel 1, this
D chamber is ring cavity in embodiment.
For the circumferential surface sealing performance for increasing piston 23 and cylinder barrel 1, annular groove is offered on the outer peripheral surface of piston 23, annular groove is embedding
Equipped with the guidance tape 24 of hole made of elastic material.
Damper 21 includes check valve 25, carries on the back the venthole offered on tight end cap 22 with 25 outlet of check valve, single
To the outlet of valve 20 through venthole and B chamber, the inlet communication A chamber of check valve 20.Damping hole is offered on piston 23
26, A chambers are connected to by the ring cavity D between damping hole 26 and cylinder barrel 1 and piston rod 4.
The upper end of piston rod 4 is provided with upper hinge seat 7, and upper hinge seat 7 blocks the upper end opening of piston rod 8, upper hinge seat 7
On be provided with for installing oscillating bearing and gas access way 71 on the car body, gas access way 71 is connected to ambient atmosphere
With 4 inner space of piston rod, gas control valve 72 is set on gas access way 71.Ambient atmosphere when opening gas control valve 72
With 4 inner space of piston rod, partition ambient atmosphere and 4 inner space of piston rod when closing gas control valve 72.Gas control valve
72 can facilitate the nitrogen leaked out in supplement use process into C chamber with the setting of gas access way 71, to keep C chamber
Indoor stable gas pressure.
Meanwhile it being provided with oil storage hole on upper and lower hinge seat, for slowing down its mill periodically to oscillating bearing supplemental lubrication rouge
Damage deformation, prolongs the service life.
Scalable dust cover 6 is provided between 1 upper end of upper hinge seat 7 and cylinder barrel, the structure of scalable dust cover 6 is similar to wave
Line pipe, length can be the work for preventing impurity to be adhered to stretching with the telescopic variation of piston rod 4, the purpose of scalable dust cover 6
Oil liquid is polluted on 4 outer peripheral surface of stopper rod and as the retraction of piston rod 4 is brought into cylinder barrel.
The specific installation form of piston component 2 is as follows: the lower section internal diameter of piston 23 is less than upper section internal diameter, in piston upper section
Inner threaded surface is offered on inner peripheral surface, is carried on the back tight end cap 22 and is mounted under piston 13 by way of being fixedly clamped with damper 21
Duan Shang.Specifically, it carries on the back tight 22 lower end of end cap and offers inner threaded surface, the external screw thread face being adapted to it is offered on damper 21,
And the diameter of 21 main part of damper is less than 23 lower section internal diameter of piston, the diameter of damper lower end is greater than in 23 lower section of piston
Diameter.It is placed in the groove of 23 upper section of piston so tight end cap 22 can will be carried on the back, carrying on the back tight end cap 22 can be by 23 lower section institute block of piston.Resistance
After the lower section of the main part insertion piston 23 of Buddhist nun's device 21, the lower end of damper 21 is by 23 lower section institute block of piston.It again will damping
Device 21 is threadedly secured on the tight end cap 22 of back, and the both ends of the surface opposite with the tight end cap 22 of back of damper 21 can be under clamping piston 23
Section.It is stronger to make to clamp, the corresponding end-faces adhered shape of damper 21 both ends of the surface opposite with tight end cap 22 is carried on the back and piston 23
Adaptation.23 upper section internal diameter of piston, which is greater than, carries on the back tight 22 outer diameter of end cap, so ring cavity is formd between piston 23 and the tight end cap 22 of back,
The size of the ring cavity is consistent with 4 size of piston rod, thus the lower end insertion of piston rod 14 is mounted in the ring cavity.Specifically in work
It is provided with inner threaded surface on inner wall corresponding with ring cavity on plug 23,23 lower end of piston rod offers the external screw thread being adapted to it
Face.
Seal assembly 3 includes guide sleeve 31, end cap 32 and locking nut 33.Guide sleeve 31 is inserted into the upper end of cylinder barrel 1, then
Guide sleeve 31 is locked in 1 upper end of cylinder barrel by end cap 32 and locking nut 33.Specifically: guide sleeve 31 is sealingly mounted at
In cylinder barrel 1, the part protrusion for stretching out cylinder barrel 1 is provided with the flange 35 that diameter is less than 1 upper end diameter of cylinder barrel, 1 outer peripheral surface of cylinder barrel
On offer for end cap 32 and 33 screw thread of locking nut installation external screw thread face, the upper end of end cap 32 be provided with for flange 35
Guide sleeve is pressed abd fixed on 1 upper end of cylinder barrel by the block machine 36 of upper surface block cooperation, block machine 36.In the present embodiment, the flange
35 are arranged in the middle part of guide sleeve 31, and the segment outer radius that guide sleeve 31 is located at 35 top of flange is less than the internal diameter of block machine 36.
To guarantee sealing effect, avoiding 1 inner fluid of cylinder barrel by oozing out in seal assembly, on the inside and outside circumferential surface of guide sleeve 31
Annular groove is offered, is embedded in the annular groove of inner peripheral surface and is sealed for realizing circumferential surface between 4 outer peripheral surface of guide sleeve 31 and piston rod
Sealing element 34, it is close embedded with being sealed for realizing circumferential surface between 1 inner wall of guide sleeve 31 and cylinder barrel in the annular groove of outer peripheral surface
Seal element 34.
The hydro-pneumatic spring of the utility model can both go up and down car body or can reduce body oscillating in driving process.Vehicle
In static state, pressure and vehicle-mounted load in hydro-pneumatic spring balance each other, and C chamber indoor gas is compressed, the pressure of air cavity and oil pocket
It is equal.When needing to increase car body, hydraulic oil is injected to A chamber by oil liquid access way 81, A chamber pressure increases, in A chamber
Hydraulic oil flows into B chamber through check valve 25, flows into ring cavity D through damping hole 26, and floating piston 5 is pushed to compress C chamber indoor gas
Increase gas pressure.When oil-air pressure is more than vehicle-mounted load, piston rod 4 is overhanging, car body increases.When needing to fall car body,
Hydraulic oil in A chamber is released by oil liquid access way 81, check valve 25 closes partition B chamber and A chamber, is self-possessed in car body
The contraction of lower piston rod 8, car body decline are acted on, is thus convenient to realize the lifting of car body.It in actual use, can be according to not
Height of the carbody is easily adjusted with road conditions, improves the passage capacity of vehicle.
In motion, oil liquid access way 81 is turned off vehicle with gas access way 71.When encountering road shocks, vehicle
Body between train at a distance from compressed, hydro-pneumatic spring length shorten, be equivalent to load increase, piston rod 4 can be shunk at this time, A chamber
Indoor section oil liquid enters B chamber by check valve 25 and floating piston 5 is pushed to compress C chamber indoor gas, another part oil liquid
Enter ring cavity D by damping hole 26, hydraulic oil is in the indoor flowing of each chamber so that the Oscillation Amplitude of car body is less than the vibration of train
Amplitude, to play buffering, damping effect.When the compressed gas rebound in air cavity, check valve 25 closes partition A chamber and B
Chamber, relative positional relationship remains unchanged between floating piston 5 and piston rod 4, can only be ring cavity D inner fluid by damping hole into
Enter A chamber, to ensure that the rapid decaying of body oscillating, damping caused by damping hole 26 also absorbs part during being somebody's turn to do
Impact energy springs back car body steadily, has achieved the purpose that improve ride performance.
For the flexible stroke for increasing hydro-pneumatic spring, the lower end outer diameter of guide sleeve 31 is less than the internal diameter of cylinder barrel 1,23 upper end of piston
Internal diameter is greater than the outer diameter of piston rod 4.So 31 lower end of guide sleeve forms the first protrusion 311, between guide sleeve 31 and cylinder barrel 1
Form the first annular groove 312；23 upper end of piston forms the second protrusion 231, forms between 23 upper end of piston and piston rod 4
Second annular groove 232.Simultaneously the first protrusion 311 outer diameter less than the second annular groove 232 outer diameter, so piston rod 4 stretch out
In the process, 23 upper surface of piston is moved to flushed with 31 lower end surface of guide sleeve after, the first protrusion 311 can be inserted into the second annular groove
In 232, the second protrusion 231 can be inserted into the first annular groove 311 and piston 23 is made to can continue to move upwards, until the second ring
The ability when slot bottom of slot 232 contacts the slot bottom of the first annular groove of upper-end contact 312 of the first protrusion 311 or the second protrusion 231
Stop.
In the present embodiment, the height of the first protrusion 311 is identical as the depth of the second annular groove 232, so convex second
While portion 231 contacts the first 311 slot bottom of annular groove out, the slot bottom of the second annular groove 232 can also contact the first protrusion 311 simultaneously,
Make the slot bottom of the first protrusion 311 and the first annular groove 312 pressure-bearing simultaneously.In other embodiments, the height of the first protrusion with
After the depth of second annular groove can also be different, but such case lower piston rod 4 reaches extreme position, only the first protrusion and the
One of pressure-bearing in the slot bottom of one annular groove, guide sleeve discontinuity are more easy to damage.
In the present embodiment, the size of the size of the first protrusion 311 and the second annular groove 232 is very close, for convenient for the
The inserting of one protrusion 311 and the second annular groove 232 is provided with taper expansion mouth 233 at the opening's edge of second annular groove 232.At other
In embodiment, the first protrusion 311 can also be processed smaller or 232 diameter of the second annular groove is processed into ground more greatly with convenient
The inserting of first protrusion and the second annular groove, expansion mouth 233 can also save at this time.
Process is it is found that the flexible stroke of hydro-pneumatic spring is equal to the distance of stretch out and draw back of piston rod 4, in piston rod 4 from the above analysis
Telescopic process in the outer peripheral surface of piston 23 play the guiding role, be slide-and-guide of the piston 23 in cylinder barrel 1, the inner circumferential of piston 23
Face is moved synchronously with piston rod 4, does not undertake guiding role.The inner peripheral surface of guide sleeve 31 play the guiding role simultaneously, is piston rod 4
Slider guide, position is fixed between the outer peripheral surface and cylinder barrel 1 of guide sleeve 31, does not undertake guiding role.So the first annular groove 312 with
The setting of second annular groove 232 will not reduce the length of guide section in 4 telescopic process of piston rod, will not influence steering capability.
Claims (10)
1. Novel oil gas spring, including cylinder barrel, piston rod and piston component, it is characterised in that: the piston component pilot seal
Ground is mounted in cylinder barrel, and piston rod extends upward and is fixed on piston component, and the upper end of cylinder barrel is provided with seal assembly, sealing
Component is while guaranteeing that cylinder barrel inner space is isolated from the outside world again for piston rod along its guiding sliding, the lower end of seal assembly
Diameter is less than internal diameter of cylinder and forms the first protrusion, and the first annular groove, piston component are formed between the first protrusion and cylinder barrel
Upper end be provided with for the first protrusion insertion the second annular groove, the setting of the second annular groove is so that piston component upper end forms
It can be inserted into the second protrusion in the first annular groove, the inside and outside diameter of the second annular groove is all larger than the outer diameter of piston rod.
2. Novel oil gas spring according to claim 1, it is characterised in that: piston rod is hollow tube-shape, piston rod inner
Floating piston is installed to pilot seal, A chamber is defined between piston component and cylinder barrel, floating piston is empty by piston rod inner
Between be separated into mutually independent B chamber and C chamber, it is empty between the piston rod and cylinder barrel between seal assembly and piston component
Gap forms D chamber, is provided with check valve and damping hole, inlet communication A chamber, the outlet B chamber of check valve on piston component
Room, the both ends of damping hole are respectively communicated with A chamber and D chamber.
3. Novel oil gas spring according to claim 1, it is characterised in that: the height of first protrusion is equal to second
The depth of annular groove.
4. Novel oil gas spring according to claim 1, it is characterised in that: the outer diameter and the second ring of first protrusion
The outer diameter of slot is adapted to, and taper expansion mouth is provided with outside the notch of the second annular groove.
5. Novel oil gas spring according to any one of claim 1 to 4, it is characterised in that: the upper end of piston rod is arranged
There is the upper hinge seat for connection body, the gas access way of connection C chamber and extraneous gas source, gas are offered on upper hinge seat
Gas control valve is provided on body access way；The lower end of cylinder barrel is provided with the lower hinge seat for connecting train, lower hinge seat
On offer the oil liquid access way of connection A chamber and external oil sources.
6. Novel oil gas spring according to any one of claim 1 to 4, it is characterised in that: the piston component includes
Piston, damper and the tight end cap of back, carry on the back the lower end that tight end cap and damper are mounted on piston by way of being fixedly clamped, and back is tight
Inner threaded surface is offered on end cap, the external screw thread face being adapted to it is offered on damper, and damper is threadedly secured in the tight end of back
Cover, and damper both ends of the surface opposite with tight end cap is carried on the back simultaneously with the corresponding end-faces shape adaptation of piston and be clamped in piston
On；The internal diameter of piston upper end is greater than the outer diameter of piston rod and forms second protrusion and the second annular groove.
7. Novel oil gas spring according to claim 6, it is characterised in that: carrying on the back between tight end cap and piston has for piston
The ring cavity of bar installation is provided with the inner threaded surface for the installation of piston-rod lower end screw thread on piston on inner wall corresponding with ring cavity.
8. Novel oil gas spring according to any one of claim 1 to 4, it is characterised in that: the seal assembly includes
Guide sleeve, end cap and locking nut, guide sleeve are sealingly mounted in cylinder barrel, and it is small that the part protrusion of stretching cylinder barrel is provided with diameter
In offering the external screw thread face for end cap and the installation of locking nut screw thread on the flange of cylinder barrel upper end diameter, cylinder barrel outer peripheral surface, hold
The upper end of lid is provided with the block machine for cooperating with flange upper surface block, and guide sleeve is pressed abd fixed on cylinder barrel upper end by block machine；
The lower end outer diameter of guide sleeve is less than internal diameter of cylinder and forms first protrusion and the first annular groove.
9. Novel oil gas spring according to claim 8, it is characterised in that: the middle part of guide sleeve is arranged in the flange,
Guide sleeve is located at the internal diameter that its outer diameter of part above flange is less than the block machine.
10. Novel oil gas spring according to claim 5, it is characterised in that: be arranged between upper hinge seat and cylinder barrel upper end
There is the scalable dust cover that is flexible and changing length with piston rod, scalable dust cover is for preventing impurity to be adhered to stretching
Piston rod outer peripheral surface on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821014578.2U CN208331092U (en) | 2018-06-29 | 2018-06-29 | Novel oil gas spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821014578.2U CN208331092U (en) | 2018-06-29 | 2018-06-29 | Novel oil gas spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208331092U true CN208331092U (en) | 2019-01-04 |
Family
ID=64785579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821014578.2U Expired - Fee Related CN208331092U (en) | 2018-06-29 | 2018-06-29 | Novel oil gas spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208331092U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645307A (en) * | 2019-09-27 | 2020-01-03 | 浙江中力机械有限公司 | Mechanical spring device for replacing gas spring |
| CN112548951A (en) * | 2019-09-10 | 2021-03-26 | 欣展晟股份有限公司 | Hydraulic reset tool for piston of disc brake cylinder |
| CN113696675A (en) * | 2021-10-11 | 2021-11-26 | 南平市建阳区汽车锻压件厂 | Lifting axle with lifting protection mechanism |
| CN114233788A (en) * | 2021-12-18 | 2022-03-25 | 新乡市新华液压机械有限公司 | Lightweight hydro-pneumatic spring |
-
2018
- 2018-06-29 CN CN201821014578.2U patent/CN208331092U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112548951A (en) * | 2019-09-10 | 2021-03-26 | 欣展晟股份有限公司 | Hydraulic reset tool for piston of disc brake cylinder |
| CN110645307A (en) * | 2019-09-27 | 2020-01-03 | 浙江中力机械有限公司 | Mechanical spring device for replacing gas spring |
| CN113696675A (en) * | 2021-10-11 | 2021-11-26 | 南平市建阳区汽车锻压件厂 | Lifting axle with lifting protection mechanism |
| CN113696675B (en) * | 2021-10-11 | 2023-08-11 | 湖北汇合专用汽车有限公司 | Lifting axle with lifting protection mechanism |
| CN114233788A (en) * | 2021-12-18 | 2022-03-25 | 新乡市新华液压机械有限公司 | Lightweight hydro-pneumatic spring |
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Granted publication date: 20190104 |