CN209689845U - Wheel hub air-tightness detection device - Google Patents
Wheel hub air-tightness detection device Download PDFInfo
- Publication number
- CN209689845U CN209689845U CN201920382725.XU CN201920382725U CN209689845U CN 209689845 U CN209689845 U CN 209689845U CN 201920382725 U CN201920382725 U CN 201920382725U CN 209689845 U CN209689845 U CN 209689845U
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- CN
- China
- Prior art keywords
- vacuum
- tight
- pressing plate
- housing
- wheel hub
- 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.)
- Expired - Fee Related
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- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 238000003825 pressing Methods 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 239000001307 helium Substances 0.000 claims abstract description 24
- 229910052734 helium Inorganic materials 0.000 claims abstract description 24
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910000838 Al alloy Inorganic materials 0.000 claims description 20
- 239000011148 porous material Substances 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 208000002925 dental caries Diseases 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a kind of wheel hub air-tightness detection devices, including cabinet, cabinet inside is equipped with bottom plate, and co-axial seal is fitted with a vacuum (-tight) housing on bottom plate, vacuum (-tight) housing internal upper part coaxially slide is fitted with a pressing plate, and vacuum (-tight) housing is equipped with the sealing fluid cylinder pressure for driving pressing plate；Clearance fit between pressing plate outer and vacuum (-tight) housing inner wall, annular groove is offered on the face of pressing plate outer, is equipped with sealing ring in annular groove, sealing ring is butted on vacuum (-tight) housing inner wall, the lower end surface of sealing ring offers annular ex-pansion slot, and the gap between annular ex-pansion slot part and pressing plate outer and vacuum (-tight) housing inner wall is connected to.When vacuum (-tight) housing pressing plate lower part is filled with helium, the medial surface that annular groove expansion slot can be acted on by high-pressure helium makes sealing ring distending, to preferably be butted between pressing plate outer and vacuum (-tight) housing inner wall, helium is avoided to leak between pressing plate and vacuum (-tight) housing, guarantees long-term normal detection.
Description
Technical field
The utility model relates to a kind of wheel hub detection device technical field, in particular to a kind of wheel hub air-leakage test dress
It sets.
Background technique
With the development of Hyundai Motor, aluminium alloy wheel hub due to many advantages, such as its is light-weight, good heat dissipation, appearance looks elegant by
Gradually instead of steel wheel hub.Aluminium alloy wheel hub generally takes Low Pressure Casting Technology, it is possible that sand holes in casting process.But it uses
Naked eyes are difficult to find out.If not doing air-leakage test, if that being just easy to gas leakage after loading onto tire, such as if having sand holes
Fruit automobile is being run at high speed, and just has security risk.So the testing requirements of more aluminium alloy wheel hub air-tightness are very strict, it is desirable that every
Part wheel hub will carry out air-leakage test before factory.Wheel hub detects using watertight in current most of Guo Guo inner wheel hubs producer
Gas leakage.The airtight component of helium became the main method of detection aluminium alloy wheel hub gas leakage in recent years.
Chinese patent notification number CN203275034U discloses a kind of automatic leak test of helium and examines equipment, including cabinet, aobvious
Display screen, control button, vacuum (-tight) housing, bottom plate, pressing plate and seal washer, cabinet panel front end be equipped with display screen and control by
Button；Cabinet inside is equipped with the bottom plate for being used to support aluminium alloy wheel hub to be detected, and co-axial seal is fitted with one on the bottom plate
Vacuum (-tight) housing, vacuum (-tight) housing internal upper part coaxially slide are fitted with a pressing plate, are equipped with a vertical hydraulic cylinder, the liquid in the middle part of pressing plate
Cylinder pressure drives pressing plate vertical upper and lower reciprocating movement, pressing plate outer in vacuum (-tight) housing to be slidably matched with the sealing of vacuum (-tight) housing inner wall, pressing plate
Space between top and vacuum (-tight) housing is vacuum.
Above equipment can effectively detect the air-tightness of wheel hub, although pressing plate outer is close with vacuum (-tight) housing inner wall
What envelope was slidably matched, but during prolonged use, or it can be because mutually rubbing between pressing plate outer and vacuum (-tight) housing inner wall
Wiping forms gap, causes the part helium on the outside of aluminium alloy wheel hub to enter pressing plate top by gap, reduces helium and pass through aluminium
Sand holes on alloy wheel hub enter the amount of helium on the inside of aluminium alloy wheel hub, so that the practical air-tightness of wheel hub can not be accurately measured,
Part substandard product may be made by detection, there are security risks.
Utility model content
The utility model one of to solve the above-mentioned problems, provides a kind of wheel hub air-tightness detection device.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of wheel hub air-tightness detection device, including cabinet, the cabinet inside are equipped with and are used to support aluminium alloy to be detected
The bottom plate of wheel hub, co-axial seal is fitted with a vacuum (-tight) housing, the vacuum (-tight) housing internal upper part coaxially slide cooperation on the bottom plate
One pressing plate is installed, the vacuum (-tight) housing is equipped with the sealing fluid cylinder pressure for driving pressing plate；The pressing plate lower end surface be equipped with to
Detect aluminium alloy wheel hub on along sealing cooperation seal washer one, the bottom plate upper surface be equipped with under aluminium alloy wheel hub to be detected
Along the seal washer two of sealing cooperation, the pressing plate, bottom plate, vacuum (-tight) housing and seal washer one and the cooperation of seal washer two will be to be checked
It surveys aluminium alloy wheel hub and is separated into two cavitys in inner cavity and exocoel, the vacuum (-tight) housing lower part side below the pressing plate is equipped with one and exocoel
The helium input pipe of connection；Be equipped with a lumen tube being connected to inner cavity in the middle part of the bottom plate, the lumen tube respectively with vacuum pump
And mass spectrograph connection, clearance fit between the pressing plate outer and vacuum (-tight) housing inner wall, the pressing plate outer offers ring on face
Slot, the annular groove is interior to be equipped with sealing ring, and the sealing ring is butted on vacuum (-tight) housing inner wall, and the lower end surface of the sealing ring offers annular
Expansion slot, the annular ex-pansion slot part are connected to the gap between pressing plate outer and vacuum (-tight) housing inner wall.
As a kind of improvement of the utility model, the cross section of the annular ex-pansion slot is triangle.
As a kind of improvement of the utility model, elastic skeleton is equipped in the sealing ring.
By using above scheme, the elastic strength of sealing ring is improved, so that sealing ring energy long-term close is connected to pressure
Between plate and vacuum (-tight) housing inner wall.
As a kind of improvement of the utility model, the pressing plate lower end surface offers the intercommunicating pore being connected to annular groove, described
Intercommunicating pore connection opposite with the annular ex-pansion slot of sealing ring.
By using above scheme, annular ex-pansion slot medial surface is directly acted on convenient for high-pressure helium, so that sealing ring is swollen
It opens and is fitted closely with vacuum (-tight) housing inner wall, it is ensured that air-tightness.
As a kind of improvement of the utility model, the pressing plate lower end surface is circumferentially uniformly provided with multiple intercommunicating pores.
By using above scheme, so that high-pressure helium is uniformly flowed into annular ex-pansion slot by multiple intercommunicating pores, so that
Sealing ring distending it is more uniform, can more preferably be butted on the inside of vacuum (-tight) housing, improve air-tightness, avoid gas leakage.
As a kind of improvement of the utility model, the driving liquid for driving vacuum (-tight) housing to move up and down is equipped in the cabinet
Cylinder pressure, the vacuum (-tight) housing lower edge and the sealing of seal washer two cooperate.
In conclusion the utility model has the following beneficial effects:
Compared with prior art, the utility model wheel hub air-tightness detection device, by the way that sealing ring is arranged in pressing plate outer,
And annular ex-pansion slot is opened up in sealing ring lower end surface, when vacuum (-tight) housing pressing plate lower part is filled with helium, can be made by high-pressure helium
Medial surface for annular groove expansion slot makes sealing ring distending, thus be preferably butted between pressing plate outer and vacuum (-tight) housing inner wall,
It avoids helium from leaking between pressing plate and vacuum (-tight) housing, guarantees long-term normal detection.
Detailed description of the invention
Fig. 1 is wheel hub air-tightness detection device front view；
Fig. 2 is wheel hub air-tightness detection device schematic diagram of internal structure；
Fig. 3 is the enlarged drawing of A in Fig. 2.
In figure, 1, cabinet；2, display screen；3, control button；4, bottom plate；5, vacuum (-tight) housing；6, driving hydraulic cylinder；7, pressing plate；
8, sealing fluid cylinder pressure；9, annular groove；10, sealing ring；11, annular ex-pansion slot；12, intercommunicating pore；13, elastic skeleton；14, seal washer
One；15, seal washer two；16, helium input pipe；17, lumen tube；18, mass spectrograph detection pipe；19, aluminium alloy wheel hub；20, interior
Chamber；21, exocoel.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment:
Referring to Fig. 1 and Fig. 2, a kind of wheel hub air-tightness detection device, including cabinet 1,1 front console of cabinet middle part are equipped with
The height dimension of display screen 2 and control button 3, display screen 2 and control button 3 is observed and is operated convenient for worker, display screen 2 and control
Button 3 processed is used to carry out parameter setting and show the display of the data such as concentrations of helium, pressure and mass spectral results.
The bottom plate 4 for being used to support aluminium alloy wheel hub 19 to be detected is installed, 4 top of bottom plate is coaxially along perpendicular inside cabinet 1
Histogram has a vacuum (-tight) housing 5 to being slidably installed, and towards bottom plate 4,5 top of vacuum (-tight) housing is equipped with for driving the opening of vacuum (-tight) housing 5
The driving hydraulic cylinder 6 that dynamic vacuum (-tight) housing 5 moves up and down, driving hydraulic cylinder 6 are installed on 1 inner upper of cabinet, the work of driving hydraulic cylinder 6
Stopper rod is threadedly coupled with 5 top of vacuum (-tight) housing and is fixed.Coaxially being slidably installed along the vertical direction in vacuum (-tight) housing 5 has a pressing plate
7, the outer upper ends face of vacuum (-tight) housing 5 is equipped with sealing fluid cylinder pressure 8, and the piston rod of sealing fluid cylinder pressure 8 penetrates in vacuum (-tight) housing 5 and pressing plate
7 centers are threadedly coupled and are fixed.Clearance fit between the outer of pressing plate 7 and the inner wall of vacuum (-tight) housing 5, in conjunction with Fig. 3, pressing plate 7
Outer face offers annular groove 9, and annular groove 9 has been embedded in sealing ring 10, and sealing ring 10 is connected to the inner wall of vacuum (-tight) housing 5, sealing ring 10
Lower end surface offer the annular ex-pansion slot 11 that cross section is triangle, 11 part of annular ex-pansion slot and 7 outer of pressing plate and vacuum
The gap connection between 5 inner walls is covered, the lower end surface of pressing plate 7 offers the intercommunicating pore 12 being connected to annular groove 9, and intercommunicating pore 12 is along pressing plate
7 it is circumferential be uniformly provided with multiple, 8 intercommunicating pores 12, the annular on intercommunicating pore 12 and sealing ring 10 are offered in the present embodiment altogether
Expansion slot 11 is opposite to be connected to.In order to improve the elastic strength of sealing ring 10, the elastic skeleton of annular is embedded in sealing ring 10
13, elastic skeleton 13 is made of spring steel plate, so that it is guaranteed that 10 energy long-term close of sealing ring is connected in pressing plate 7 and vacuum (-tight) housing 5
Between wall.
7 lower end surface of pressing plate is bonded with the seal washer 1 of one with sealing cooperation in edge on aluminium alloy wheel hub 19 to be detected, and
4 upper surface of bottom plate is bonded with a sealing that can cooperate simultaneously with 19 lower edge of aluminium alloy wheel hub to be detected and the sealing of 5 lower edge of vacuum (-tight) housing
Washer 2 15, pressing plate 7, bottom plate 4, vacuum (-tight) housing 5 and seal washer 1 and seal washer 2 15 cooperate aluminum alloy wheel to be detected
Hub 19 is separated into the 21 two independent cavitys in inner cavity 20 and exocoel, and 5 lower part side of the vacuum (-tight) housing connection of 7 lower section of pressing plate is welded with one
Helium input pipe 16, the helium input pipe 16 are connected to the exocoel 21 outside aluminium alloy wheel hub 19 to be detected；The middle part of bottom plate 4 with it is to be checked
20 communicating position of inner cavity surveyed inside aluminium alloy wheel hub 19 is communicated with a lumen tube 17 connecting with vacuum pump (not drawing in figure), should
Lumen tube 17 is also connected to mass spectrograph by mass spectrograph detection pipe 18, and (outsourcing device is not drawn in figure.)
The step of detection process, is as follows；
Inner cavity and exocoel are all evacuated to vacuum state by vacuum pump, then in exocoel charged pressure are 2.5~4bar, concentration
For 5~12% helium, when pressure reaches setting value, mass spectrograph valve is opened, since inner cavity is vacuum state, so if aluminium
The helium of alloy wheel hub exocoel moment can enter mass spectrograph, and mass spectrograph is let out according to the helium gas molecules quantitative determination wheel hub detected
Leak rate, equipment can be compared with the standard leak rate of setting, if slip is more than or equal to standard value and is determined as gas leakage, equipment is certainly
Turn is to gas leakage roller-way, if slip is less than standard value and is determined as that qualification goes to qualified product roller-way.After detection externally
The helium of chamber is recycled.So circulation realize equipment it is automatic judgement, circulate, reduce human factor and helium leakage because
The erroneous judgement that element generates, improves production efficiency and product quality.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (6)
1. a kind of wheel hub air-tightness detection device, including cabinet (1), internal be equipped with of the cabinet (1) is used to support aluminium to be detected
The bottom plate (4) of alloy wheel hub (19), co-axial seal is fitted with a vacuum (-tight) housing (5), the vacuum (-tight) housing on the bottom plate (4)
(5) internal upper part coaxially slide is fitted with a pressing plate (7), and the vacuum (-tight) housing (5) is equipped with the sealing for driving pressing plate (7)
Hydraulic cylinder (8)；Pressing plate (7) lower end surface is equipped with the seal washer one with sealing cooperation in edge on aluminium alloy wheel hub to be detected (19)
(14), bottom plate (4) upper surface is equipped with the seal washer two (15) with the sealing cooperation of aluminium alloy wheel hub to be detected (19) lower edge,
The pressing plate (7), bottom plate (4), vacuum (-tight) housing (5) close aluminium to be detected with seal washer one (14) and seal washer two (15) cooperation
Golden wheel hub (19) is separated into (21) two cavitys in inner cavity (20) and exocoel, vacuum (-tight) housing (5) lower part side below the pressing plate (7)
The helium input pipe (16) being connected to equipped with one with exocoel (21)；Bottom plate (4) middle part is connected to equipped with one with inner cavity (20) interior
Lumen (17), the lumen tube (17) are connected to vacuum pump and mass spectrograph respectively, which is characterized in that pressing plate (7) outer
The clearance fit between vacuum (-tight) housing (5) inner wall offers annular groove (9) on pressing plate (7) the outer face, sets in the annular groove (9)
Have sealing ring (10), the sealing ring (10) is butted on vacuum (-tight) housing (5) inner wall, and the lower end surface of the sealing ring (10) offers annular
Expansion slot (11), gap of the annular ex-pansion slot (11) partially between pressing plate (7) outer and vacuum (-tight) housing (5) inner wall are connected to.
2. wheel hub air-tightness detection device according to claim 1, which is characterized in that the cross of the annular ex-pansion slot (11)
Section is triangle.
3. wheel hub air-tightness detection device according to claim 1, which is characterized in that be equipped with bullet in the sealing ring (10)
Property skeleton (13).
4. wheel hub air-tightness detection device according to claim 1, which is characterized in that pressing plate (7) lower end surface opens up
There is the intercommunicating pore (12) being connected to annular groove (9), the intercommunicating pore (12) is opposite with the annular ex-pansion slot (11) of sealing ring (10) to be connected
It is logical.
5. wheel hub air-tightness detection device according to claim 4, which is characterized in that pressing plate (7) lower end surface is circumferential
It is uniformly provided with multiple intercommunicating pores (12).
6. wheel hub air-tightness detection device according to claim 1, which is characterized in that be equipped with and be used in the cabinet (1)
The driving hydraulic cylinder (6) that driving vacuum (-tight) housing (5) moves up and down, vacuum (-tight) housing (5) lower edge are matched with seal washer two (15) sealing
It closes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920382725.XU CN209689845U (en) | 2019-03-25 | 2019-03-25 | Wheel hub air-tightness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920382725.XU CN209689845U (en) | 2019-03-25 | 2019-03-25 | Wheel hub air-tightness detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209689845U true CN209689845U (en) | 2019-11-26 |
Family
ID=68606060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920382725.XU Expired - Fee Related CN209689845U (en) | 2019-03-25 | 2019-03-25 | Wheel hub air-tightness detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209689845U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113921370A (en) * | 2021-04-09 | 2022-01-11 | 杭州安誉科技有限公司 | Sample inlet and outlet device of mass spectrometer and mass spectrometer |
| WO2023221777A1 (en) * | 2022-05-19 | 2023-11-23 | 安徽信息工程学院 | Air tightness test apparatus for motor flange end cap |
-
2019
- 2019-03-25 CN CN201920382725.XU patent/CN209689845U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113921370A (en) * | 2021-04-09 | 2022-01-11 | 杭州安誉科技有限公司 | Sample inlet and outlet device of mass spectrometer and mass spectrometer |
| WO2023221777A1 (en) * | 2022-05-19 | 2023-11-23 | 安徽信息工程学院 | Air tightness test apparatus for motor flange end cap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191126 |