CN205534682U - Metal collapsible tube assembly is used in commercial car exhaust - Google Patents
Metal collapsible tube assembly is used in commercial car exhaust Download PDFInfo
- Publication number
- CN205534682U CN205534682U CN201620235297.4U CN201620235297U CN205534682U CN 205534682 U CN205534682 U CN 205534682U CN 201620235297 U CN201620235297 U CN 201620235297U CN 205534682 U CN205534682 U CN 205534682U
- Authority
- CN
- China
- Prior art keywords
- telescoping tube
- metal hose
- flexible pipe
- tube
- collapsible tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model provides a metal collapsible tube assembly is used in commercial car exhaust, include metal collapsible tube and fix respectively in joint (4) at metal collapsible tube both ends, its characterized in that, metal collapsible tube contains bellows (1) of one deck condensation wave type the inside of bellows (1), still to interior first flexible pipe (2) and the flexible pipe of second (3) of being equipped with in proper order outside from, the flexible pipe of first flexible pipe (2) and second (3) is invertd each other, the flexible pipe of second (3) is used for confirming the exhaust direction, the internal diameter of bellows (1) and the external diameter phase -match of first flexible pipe (2). The utility model discloses the main support of flexible pipe conduct of the double -deck inversion of metal collapsible tube adoption among the well metal collapsible tube assembly is used in commercial car exhaust plus the structure of one deck bellows for its application scope is wide, damping the noise reduction effect is good, the installation accuracy requires low, antifatigue coefficient height, long service life, 0 emission of assembly, axial and radial displacement compensate effectual, the practicality is strong.
Description
Technical field
This utility model belongs to the Design of Auto Parts field, relates generally to a kind of commercial car aerofluxus metal hose assembly.
Background technology
Automobile exhaust metal hose on automobile as flexible member, play absorb slow down gas extraction system vibration, displacement and compensation because of expanding with heat and contract with cold, mechanical displacement or vibration cause pipeline, the change of equipment equidimension or axially, the horizontal and effect of angle displacement, its main performance includes rigidity, intensity, stability and fatigue life.The cry protected environment along with society is increasingly stronger and national more and more stricter to the standard of exhaust emissions; the current commercial car metal hose that mainly telescoping tube, serpentine pipe or corrugated tube are made occurred can not meet the demand of low leakage even 0 leakage, and the metal hose that corrugated tube and serpentine pipe are made also has the problems such as the rigidity always existed is big, installation is inconvenient, service life is short；Although using the additional mesh grid of corrugated tube or using the structure of one layer of additional one layer of corrugated tube of telescoping tube and mesh grid can realize low leakage even 0 leakage used by passenger car at present, but, this structure almost can only be pressed, tensile yardstick is the least, axially, radial compensation is the least, and build-up tolerance requires height, it is impossible to be perfectly suitable for the installation of the bigger commercial car of build-up tolerance, use requirement, people urgently find a kind of preferably way to solve these problems.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of applied widely, vibration and noise reducing voltage regulation result is good, installation accuracy requires low, resisting fatigue coefficient height, length in service life, assembly 0 discharge, axially and radially bit shift compensation is effective, practical commercial car aerofluxus metal hose assembly.
This utility model is achieved through the following technical solutions:
A kind of commercial car aerofluxus metal hose assembly, including metal hose and the joint that is separately fixed at metal hose two ends, it is characterized in that, described metal hose comprises the corrugated tube of one layer of condensation wave type, in the inside of described corrugated tube, being sequentially provided with the first telescoping tube and the second telescoping tube the most from outside to inside, described first telescoping tube and the second telescoping tube are mutually inverted, described second telescoping tube is used for determining discharge directions, and the internal diameter of described corrugated tube and the external diameter of the first telescoping tube match.
As preferably, described outer layer bellows stiffness is designed as 3-6N/mm, and the usual corrugated tube pitch of waves i.e. can be described as condensation wave type, under this rigidity less than 8mm, pitch of waves minimum can as little as 4mm, far away the most all can be little more than the pitch of waves of 8mm than the corrugated tube requirement based on rigidity used in prior art.
As preferably, the material thickness of described first telescoping tube and the second telescoping tube is 0.38mm-0.5mm.
As preferably, SUS321 rustless steel selected by described telescoping tube, and SUS304 material selected by corrugated tube.
As preferably, described metal hose and joint, by being welded and fixed, outside weld, are additionally provided with outer ring.
As preferably, described first telescoping tube or the second telescoping tube use ASS structure or SSS structure.When using SSS structure, telescoping tube expansion and contraction is up to 30%, and air-tightness is more preferable.
Air-tightness problem for commercial car exhaust requirements, bit shift compensation problem and an assembling difficult problem, utility model people is based on practical experience for many years and through test of many times, finally determine in metal hose, use the first telescoping tube and the second telescoping tube two-layer telescoping tube, and the mutual inverted structure of two-layer telescoping tube is as the main support of metal hose, wherein it is positioned at the second telescoping tube of internal layer for determining discharge directions, i.e. the fastening structure placing direction of the second telescoping tube of internal layer arrange when aerofluxus card interface direction contrary with gas flow, gas is not easy to toward corrugated tube direction reveal, even if revealing, also can be a little part；Simultaneously, the snap fit direction of the first telescoping tube arranges contrary with the second telescoping tube, when leaking into, from the second telescoping tube, the fastening structure of the first telescoping tube that the gas in the first telescoping tube runs into inverted structure on a small quantity, the inertia flow direction that gas has originally can be disturbed again, the power of gas transmission is buffered further, these gases are also less prone to toward outermost corrugated tube reveal, i.e. inverted first telescoping tube of this special setting further increases air-tightness.And during whole, the good expansion and contraction that telescoping tube based on script monolayer just has, bit shift compensation, add to be inverted by two-layer telescoping tube dexterously and coordinate, metal hose of the present utility model is made only to have used internal two-layer telescoping tube just can sponge the power that overwhelming majority engine luggine produces dexterously, and make the most least a portion of gas can enter into outermost corrugated tube, from mechanics, especially protect corrugated tube, corrugated tube is thus made to have obtained the protection of maximum, even if making it when its rigid design obtains relatively low, also can have long service life.And the existence of corrugated tube also makes this metal hose can reach 0 leakage.
Compared with prior art, the beneficial effects of the utility model: in this utility model, metal hose uses double-deck inverted telescoping tube as main support, the structure of additional one layer of corrugated tube, mutually support between structure, the bit shift compensation effect that greatly strengthen product makes the extensibility of metal hose, flexible and air-tightness all has preferably improvement compared to existing metal hose, make it applied widely, effect of vibration and noise reduction is good, installation accuracy requires low, resisting fatigue coefficient is high, service life is long, assembly 0 discharges, axially and radially bit shift compensation is effective, practical, especially at following four aspects, there is prominent advantage:
1. damping, compensate: because the existence of double-deck telescoping tube, and telescoping tube design and installation length can reach 2.5 to 4 times of external diameter, greatly strengthen the bit shift compensation effect of product, the power of the vibration of overwhelming majority automobile engine can be directly sponged by this two-layer telescoping tube, the stress total amount making corrugated tube is substantially reduced relatively, therefore under the conditions of equal engine luggine, while can guarantee that service life, the rigidity of the corrugated tube of the application can be made more much lower than the rigidity of the general corrugated tube required, can as little as 3-6N/mm, well below the rigidity of more than the 10N/mm of design needed for the corrugated tube generally used at present, concrete rigidity determines (wave height according to product overall length, the pitch of waves, wave number is according to rigidity Design).The condensation wave type corrugated tube that rigidity is relatively low so that metal hose entirety can be drawn and can be stretched, can play slip-tube shaft to greatest extent to, tolerance bit shift compensation effect radially, be substantially reduced assembling installation requirement, expand the occasion suitability, and damping noise reduction effect is more preferable.Because telescoping tube expansion and contraction can be that 23%-25% is the highest, under 30KPa air pressure, leak rate is less than 5L/min/dm2, flexible resistance (single tube) is less than 120N, then coordinates the structure of the upper outside corrugated tube sealed so that the metal hose of the application can be highly suitable for commercial car, and can guarantee that 0 leakage, and environment friendly is good.
2. noise reduction: because telescoping tube inner wall smooth, gas is good at Bottomhole pressure, can reduce the noise of electromotor well.Simultaneously because the inverted telescoping tube of two-layer can make leakage slower, it is considerably less that gas enters corrugated tube, serves the effect reducing abnormal sound.
3. insulation: because in diesel engine truck exhaust system, if at this position rapid heat dissipation of metal hose, delivery temperature is low, it is low to add outside air temperature, and Tail Pipe Temperature is low, and the carbamide of ejection is not easy decomposition evaporation, can crystallize at exhaustor inwall.In the Three Eastern Provinces, this colder northern area, is especially apparent, and the application uses the structure of the additional one layer of corrugated tube of double-deck inverted telescoping tube, can be greatly reinforced aerofluxus heat insulation effect, provides good for follow-up link and ensures.
4. service life: using two-layer flexible pipe structure, enhance the intensity of product, improve the anti-fatigue ability of metal hose, service life is longer.Meanwhile, absorption of vibrations is eliminated by telescoping tube, it is to avoid bigger power acts on the corrugated tube of outer layer, it is ensured that the service life of corrugated tube, thus extends the service life that metal hose is overall.
Accompanying drawing explanation
This utility model will illustrate by example and with reference to the appended drawing, wherein:
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the partial enlarged drawing of two-layer flexible pipe structure at A in Fig. 1.
Detailed description of the invention
Any feature disclosed in this specification, unless specifically stated otherwise, all can be by other equivalences or there is the alternative features of similar purpose replaced.I.e., unless specifically stated otherwise, an example during each feature is a series of equivalence or similar characteristics.
As shown in Fig. 1～2, a kind of commercial car aerofluxus metal hose assembly, including metal hose and the joint 4 that is separately fixed at metal hose two ends, it is characterized in that, described metal hose comprises the corrugated tube 1 of one layer of condensation wave type, the inside at described corrugated tube 1, it is sequentially provided with the first telescoping tube 2 and the second telescoping tube 3 the most from outside to inside, described first telescoping tube 2 and the second telescoping tube 3 are mutually inverted, described second telescoping tube 3 is used for determining discharge directions, the internal diameter of described corrugated tube 1 and the external diameter of the first telescoping tube 2 match, the internal diameter of described first telescoping tube 2 and the external diameter of the second telescoping tube 3 match.
Described corrugated tube 1 rigidity Design is 3-6N/mm；
The material thickness of described first telescoping tube 2 and the second telescoping tube 3 is 0.38mm-0.5mm；
Described first telescoping tube 2 and the second telescoping tube 3 select SUS321 rustless steel, corrugated tube 1 to select SUS304 material；
Described metal hose and joint 4, by being welded and fixed, outside weld, are additionally provided with outer ring 5；
Described first telescoping tube 2 or the second telescoping tube 3 use ASS structure or SSS structure.
Metal hose uses the first telescoping tube and the second telescoping tube two-layer telescoping tube and the mutual inverted structure of two-layer telescoping tube is as the main support of metal hose, wherein it is positioned at the second telescoping tube of internal layer for determining discharge directions, i.e. the fastening structure placing direction of the second telescoping tube of internal layer arrange when aerofluxus card interface direction contrary with gas flow, gas is not easy to toward corrugated tube direction reveal, even if revealing, it also can be a little part；Simultaneously, the snap fit direction of the first telescoping tube arranges contrary with the second telescoping tube, when leaking into, from the second telescoping tube, the fastening structure of the first telescoping tube that the gas in the first telescoping tube runs into inverted structure on a small quantity, the inertia flow direction that gas has originally can be disturbed again, the power of gas transmission is buffered further, these gases are also less prone to toward outermost corrugated tube reveal, i.e. inverted first telescoping tube of this special setting further increases air-tightness.And during whole; good expansion and contraction that telescoping tube based on script monolayer just has, bit shift compensation; add to be inverted by two-layer telescoping tube dexterously and coordinate; make metal hose of the present utility model only use internal two-layer telescoping tube just can sponge overwhelming majority engine luggine dexterously and produce power; and make the most least a portion of gas can enter into outermost corrugated tube; outstanding and from mechanics, protect corrugated tube; corrugated tube is thus made to have obtained the protection of maximum; even if making it when its rigid design obtains relatively low, also can have long service life.
The beneficial effects of the utility model: in this utility model, metal hose uses double-deck inverted telescoping tube as main support, the structure of additional one layer of corrugated tube, several condition superpositions, mutually support between structure, the bit shift compensation effect that greatly strengthen product makes the extensibility of metal hose, flexible and air-tightness all has preferably improvement compared to existing metal hose, make it applied widely, effect of vibration and noise reduction is good, installation accuracy requires low, resisting fatigue coefficient is high, service life is long, assembly 0 discharges, axially and radially bit shift compensation is effective, practical.
This utility model is not limited to aforesaid detailed description of the invention.This utility model expands to any new feature disclosed in this manual or any new combination, and the arbitrary new method that discloses or the step of process or any new combination.
Claims (5)
1. a commercial car aerofluxus metal hose assembly, including metal hose and the joint (4) that is separately fixed at metal hose two ends, it is characterized in that, described metal hose comprises the corrugated tube (1) of one layer of condensation wave type, the inside in described corrugated tube (1), it is sequentially provided with the first telescoping tube (2) and the second telescoping tube (3) the most from outside to inside, described first telescoping tube (2) and the second telescoping tube (3) are mutually inverted, described second telescoping tube (3) is used for determining discharge directions, and the internal diameter of described corrugated tube (1) and the external diameter of the first telescoping tube (2) match.
Commercial car aerofluxus metal hose assembly the most according to claim 1, it is characterised in that the material thickness of described first telescoping tube (2) and the second telescoping tube (3) is 0.38mm-0.5mm.
Commercial car aerofluxus metal hose assembly the most according to claim 1, it is characterised in that SUS321 rustless steel selected by described first telescoping tube (2) and the second telescoping tube (3), and SUS304 material selected by corrugated tube (1).
Commercial car aerofluxus metal hose assembly the most according to claim 1, it is characterised in that described metal hose and joint (4), by being welded and fixed, outside weld, are additionally provided with outer ring (5).
Commercial car aerofluxus metal hose assembly the most according to claim 1, it is characterised in that described first telescoping tube (2) or the second telescoping tube (3) use ASS structure or SSS structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620235297.4U CN205534682U (en) | 2016-03-25 | 2016-03-25 | Metal collapsible tube assembly is used in commercial car exhaust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620235297.4U CN205534682U (en) | 2016-03-25 | 2016-03-25 | Metal collapsible tube assembly is used in commercial car exhaust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205534682U true CN205534682U (en) | 2016-08-31 |
Family
ID=56784857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620235297.4U Active CN205534682U (en) | 2016-03-25 | 2016-03-25 | Metal collapsible tube assembly is used in commercial car exhaust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205534682U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605342A (en) * | 2016-03-25 | 2016-05-25 | 江阴市德森汽车零部件有限公司 | Metal hose assembly for commercial vehicle exhaust |
-
2016
- 2016-03-25 CN CN201620235297.4U patent/CN205534682U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605342A (en) * | 2016-03-25 | 2016-05-25 | 江阴市德森汽车零部件有限公司 | Metal hose assembly for commercial vehicle exhaust |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101570921B1 (en) | Flexible Tube for Exhaust Pipe of Automobiles | |
| CN105605342B (en) | Commercial vehicle exhaust metal hose assembly | |
| US20070132232A1 (en) | Decoupling element impervious to liquid fluids | |
| KR20140111849A (en) | Flexible Tube for Exhaust Pipe of Automobiles | |
| CN205534682U (en) | Metal collapsible tube assembly is used in commercial car exhaust | |
| CN204419332U (en) | A kind of exhaust fitting | |
| CN105840927A (en) | Improved metal hose assembly used for exhausting of commercial vehicle | |
| CN201574813U (en) | Combined exhaust pipe heat insulation sleeve | |
| CN106014561A (en) | Three-way catalyst assembly | |
| CN211851972U (en) | Integral wave-shaped expansion joint of flow guide pipe | |
| CN210087462U (en) | Flexible corrugated pipe for automobile | |
| CN110905643A (en) | Floated water conservancy diversion blast pipe and engineering equipment | |
| CN210179156U (en) | Straight pipe by-pass type pressure balance corrugated expansion joint | |
| CN206448862U (en) | A kind of corrugated flexible hose and engine assembly and vehicle with it | |
| CN201461145U (en) | Pipe for exhaust gas recirculation system | |
| CN207377641U (en) | The exhaust pipe of engine and vehicle | |
| CN202659324U (en) | Corrugated pipe for exhaust system | |
| JPH06336921A (en) | Exhaust tube of internal combustion engine | |
| CN211448811U (en) | Floated water conservancy diversion blast pipe and engineering equipment | |
| CN209370634U (en) | Metal hose and utilize its manufactured metal hose assembly | |
| CN209458004U (en) | New type corrugated pipe assembly with Intranet | |
| CN110425366A (en) | A kind of anti-freezing and heat-insulating type hose | |
| CN218440611U (en) | Rubber sealing ring for automobile air conditioner pipeline | |
| CN215256423U (en) | Exhaust pipe and vehicle with same | |
| CN207278346U (en) | A kind of exhaust tail pipe of automobile decorated using PE materials |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |