CN218236461U - High adaptation type metal collapsible tube assembly for commercial car exhaust - Google Patents
High adaptation type metal collapsible tube assembly for commercial car exhaust Download PDFInfo
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- CN218236461U CN218236461U CN202222228496.0U CN202222228496U CN218236461U CN 218236461 U CN218236461 U CN 218236461U CN 202222228496 U CN202222228496 U CN 202222228496U CN 218236461 U CN218236461 U CN 218236461U
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Abstract
The utility model discloses a high-adaptability metal hose assembly for exhaust of commercial vehicles, which comprises a metal hose, wherein 1-2 layers of telescopic pipes are arranged inside the metal hose in a matching way, and a plurality of anti-resonance elements which are uniformly distributed are arranged between the outermost telescopic pipe and the metal hose; the metal hose comprises at least one weak deformation section and strong deformation sections, wherein the weak deformation sections are integrally formed, the strong deformation sections are arranged on two sides of each weak deformation section at intervals, the strong deformation sections are of dense-wave corrugated structures, and the weak deformation sections are of straight cylindrical structures or corrugated structures, the heights of wave crests of the corrugated structures are lower than those of the strong deformation sections, and the distances between the wave crests of the corrugated structures are larger than those of the strong deformation sections. The utility model discloses because the cooperation of weak deformation section and strong deformation section, reducible when the metal collapsible tube deflection is big, the dry friction that produces between the place that middle department incurved deformation is the biggest and the interior draw outside promotes life, because the addition of weak deformation section in addition, holistic intensity and antitorque commentaries on classics ability are strong, have also reduced the resonance possibility, and adaptability is extremely strong.
Description
Technical Field
The utility model belongs to the automobile parts field of making especially relates to a metal collapsible tube assembly is used in exhaust of high adaptation type commercial car.
Background
With the increasingly strong call for protecting the environment in society and the increasingly strict national standards for exhaust emission, the performance requirements for the exhaust metal hose assembly for the commercial vehicle are increasingly high, and the six national standards require low leakage and even 0 leakage. The metal hose in the exhaust metal hose assembly for the commercial vehicle is used as a flexible element on the vehicle, plays a role in absorbing and slowing down the vibration and displacement of an exhaust system and compensating the dimensional change or axial, transverse and angular displacement of pipelines, equipment and the like caused by thermal expansion and cold contraction, mechanical displacement or vibration, and has the main performances of rigidity, strength, stability and fatigue life. The invention discloses a metal hose assembly for exhaust of a high-adaptability commercial vehicle, which can be well suitable for the installation and use requirements of a commercial vehicle with larger assembly tolerance, for example, the invention patent with the application number of 201610175045.1 discloses the metal hose assembly for exhaust of the high-adaptability commercial vehicle, wherein the metal hose comprises a dense corrugated type corrugated pipe and an expansion pipe, and the metal hose is soft enough, warm enough and strong enough in damping effect.
However, when the installation deviation of the metal hose assembly is large or the installation is not standard, when the deformation amount of the metal hose is large, the inner wall of the dense-wave corrugated pipe is located at the position where the inward bending deformation is maximum, and dry friction is more easily generated between the inner wall and the inner telescopic pipe, and the wear of the metal hose and the inner telescopic layer is easily caused after the dry friction is long, so that the service life of the whole exhaust device is shortened. In addition, in order to increase the loading capacity of the truck, the horsepower of the commercial vehicle is designed to be larger, the vibration caused by the horsepower is also larger, and when the metal hose is softer, the large vibration is more likely to cause resonance of the metal hose for exhaust, so that the generation of resonance is avoided as much as possible while ensuring sufficient flexibility is also a current requirement. Based on the above-mentioned problems, it is desirable to have a better metal hose assembly to solve these problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a high adaptability, anti resonance is better, life is longer high adaptation type metal collapsible tube assembly for commercial car exhaust is provided.
The utility model discloses a realize through following technical scheme:
the metal hose assembly for exhausting the high-adaptability commercial vehicle comprises a metal hose, wherein 1-2 layers of telescopic pipes are arranged inside the metal hose in a matched mode, and a plurality of anti-resonance elements which are uniformly distributed are arranged between the telescopic pipe on the outermost side and the metal hose; the metal hose comprises at least one weak deformation section and strong deformation sections, wherein the weak deformation sections are integrally formed, the strong deformation sections are arranged on two sides of each weak deformation section at intervals, the strong deformation sections are of dense-wave corrugated structures, and the weak deformation sections are of straight cylindrical structures or corrugated structures, the heights of wave crests of the corrugated structures are lower than those of the strong deformation sections, and the distances between the wave crests of the corrugated structures are larger than those of the strong deformation sections.
Preferably, the metal hose has a single-layer structure or a double-layer structure. When the metal hose is of a double-layer structure, the forming process is as follows: two sections of steel belts are respectively welded into two straight cylinders with similar diameters, then the two straight cylinders are sleeved together, and then the two straight cylinders are simultaneously subjected to ripple hydraulic forming to form a corrugated pipe.
Preferably, the wave crest of the corrugated structure of the strong deformation section is a circular wave structure or a sharp-angled flat structure. The design that crest department shaping becomes the flat structure of closed angle for the distance between the outside ripple of bellows can be bigger than original, brings a great deal of benefit from this: because the waves can be denser, the damping and noise reduction effects are better, the overall stretchability of the metal hose is better, the mounting precision requirement can be further reduced, and the thermal deformation is small when the metal hose is heated, so that the metal hose is more suitable for a hotter environment or is not easy to generate thermal expansion after being used for a long time; the corrugated pipe is not easy to be damaged after sundries such as stones enter the corrugated pipe, so that the metal hose is more durable, and the service life is prolonged.
Preferably, the corrugated structure on the weak deformation section is a flat wave or a gradual change wave. When the wave is a gradual change wave, the wave is a gradual change structure with the height gradually reduced from two sides to the middle peak. The structure ensures that when the deformation of the metal hose is large, the middle part of the inner wall of the corrugated pipe is positioned at the position with the largest inward bending deformation, and the dry friction between the inner wall of the corrugated pipe and the inner telescopic pipe can be avoided.
Preferably, the metal hose is further provided with a transition section extending in a uniform forming manner on the outer side of the strong deformation sections on the two sides, the transition section is respectively fixed with a joint, and the periphery of the fixed part of the metal hose and the joint is further provided with an outer ring capable of wrapping the corrugated structures of the strong deformation sections on the two sides. The transition section is arranged, so that the metal hose assembly has stronger anti-torsion capability on the edge, better force conductivity and more superior performance.
Preferably, the transition section is a corrugated structure with the wave crest height lower than that of the strong deformation section and the wave crest distance greater than or equal to that of the strong deformation section, the transition section is a straight-tube structure, and the joint is connected with the straight-tube structure section on the transition section.
Further, the corrugated structure on the transition section is a structure with the wave peak height gradually reduced away from the strong deformation section.
Preferably, the length to diameter ratio of the metal hose is greater than 1.6.
Preferably, the metal hose comprises a weak deformation section and strong deformation sections positioned at two ends of the weak deformation section.
The utility model has the advantages that:
the utility model discloses a high adaptation type metal collapsible tube assembly for commercial car exhaust, the structure is ingenious, because the cooperation of weak deformation section and strong deformation section, make metal collapsible tube not only keep having good elasticity and shock attenuation effect, and increase the reducible metal collapsible tube's behind the weak deformation section bending resistance when the metal collapsible tube deflection is big because of the installation is canonicalized, the dry friction that produces between the place that middle department incurve deformation is the biggest and the interior draw outside, effectively promote the life of metal collapsible tube under the bad condition of installation, also can adapt to when the installation accuracy is lower, in addition because the addition of weak deformation section, the holistic intensity of metal collapsible tube and antitorque ability have been promoted, resonance possibility has also been reduced from this, fatigue resistance has been improved, further improve the holistic life of metal collapsible tube assembly, under the requirement that reaches the six leakages of commercial exhaust state, to various condition adaptability extremely strong, long service life, promote.
Drawings
For ease of illustration, the invention is described in detail by the following specific examples and figures.
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
fig. 3 is a schematic structural diagram of embodiment 2 of the present invention;
FIG. 4 is a cross-sectional view of FIG. 3;
fig. 5 is a schematic structural view of embodiment 3 of the present invention;
fig. 6 is a schematic structural diagram of embodiment 4 of the present invention;
FIG. 7 is an enlarged view of the structure at A in FIG. 6;
fig. 8 is a schematic structural view of embodiment 5 of the present invention.
Detailed Description
Example 1
As shown in fig. 1-2, the metal hose assembly for exhaust of a high-adaptability commercial vehicle comprises a metal hose 10, wherein 1 layer of telescopic pipes 20 are also arranged inside the metal hose 10 in a matching manner, and a plurality of anti-resonance elements 30 which are uniformly distributed are also arranged between the telescopic pipe 20 at the outermost side and the metal hose 10; the metal hose 10 comprises a weak deformation section 1 and strong deformation sections 2 which are arranged on two sides of the weak deformation section 1 at intervals, wherein the weak deformation section 1 is integrally formed, the strong deformation sections 2 are of a dense wave type corrugated structure, and the weak deformation section 1 is of a corrugated structure with the wave crest height lower than that of the strong deformation section and the wave crest interval larger than that of the strong deformation section 2.
The metal hose 10 has a single-layer structure.
The corrugated structure on the weak deformation section 1 is flat wave.
The wave crest of the corrugated structure of the strong deformation section 2 is of a circular wave structure.
The outer side of the strong deformation sections 2 on the two sides of the metal hose 10 is also provided with a transition section 3 which extends in a uniform forming mode, the transition section 3 is respectively fixed with a joint 40, and the periphery of the fixed part of the metal hose 10 and the joint 40 is also provided with an outer ring 50 which can wrap the part of the corrugated structure of the strong deformation sections on the two sides. The arrangement of the transition section can enable the metal hose assembly to have stronger torsion resistance on the edge, better force conductivity and more excellent performance.
The structure of the transition section 3 close to the strong deformation section 2 is a corrugated structure with the wave crest height lower than that of the strong deformation section and the wave crest distance more than or equal to that of the strong deformation section, the structure far away from the strong deformation section is a straight-tube structure, and the joint is connected with the straight-tube structure section on the transition section.
The corrugated structure on the transition section 3 is a structure which is far away from the strong deformation section and the wave peak height is gradually reduced.
The length-diameter ratio of the metal hose is more than 1.6.
Example 2
As shown in fig. 3-4, except for other features as in embodiment 1, 2 layers of telescopic tubes 20 are further disposed inside the metal hose 10, the weak deformation section 1 is a straight cylindrical structure, and the wave crests of the corrugated structure of the strong deformation section 2 are formed into a sharp-angled flat structure.
Example 3
As shown in fig. 5, except for other features as in embodiment 1, the metal hose is provided with 3 weak deformation sections 1 and strong deformation sections 2 disposed at two sides of each weak deformation section at intervals, the middle weak deformation section 1 is a straight cylindrical structure, the two weak deformation sections 1 at two sides are corrugated structures having peak heights lower than that of the strong deformation section and peak distances larger than that of the strong deformation section 2, and the peak positions of the corrugated structures of the strong deformation sections 2 are formed into sharp-angled flat structures.
Example 4
As shown in fig. 6 to 7, except for other features as in embodiment 1, the metal hose is provided with 3 weak deformation sections 1 and strong deformation sections 2,3 spaced at two sides of each weak deformation section 1, the weak deformation sections 1 are all corrugated structures, the peak heights of which are lower than those of the strong deformation sections and the peak distances of which are greater than those of the strong deformation sections 2, the corrugated structures on the weak deformation sections are gradual change waves and gradually decrease from two sides to the middle peak height, the peaks of the corrugated structures of the strong deformation sections 2 are formed into sharp-corner flat structures, and the metal hose 10 is of a double-layer structure.
Example 5
As shown in fig. 8, except for other features of embodiment 1, the metal hose is provided with 3 weak deformation sections 1 and strong deformation sections 2,3 arranged at intervals on two sides of each weak deformation section 1, wherein the weak deformation sections 1 are all straight cylindrical structures, and peaks of the corrugated structure of the strong deformation section 2 are formed into sharp-angled flat structures.
The utility model discloses a high adaptation type metal collapsible tube assembly for commercial car exhaust, the structure is ingenious, because the cooperation of weak deformation section and strong deformation section, make metal collapsible tube not only keep having good elasticity and shock attenuation effect, and increase the reducible metal collapsible tube's behind the weak deformation section bending resistance when the metal collapsible tube deflection is big because of the installation is canonicalized, the dry friction that produces between the place that middle department incurve deformation is the biggest and the interior draw outside, effectively promote the life of metal collapsible tube under the bad condition of installation, also can adapt to when the installation accuracy is lower, in addition because the addition of weak deformation section, the holistic intensity of metal collapsible tube and antitorque ability have been promoted, resonance possibility has also been reduced from this, fatigue resistance has been improved, further improve the holistic life of metal collapsible tube assembly, under the requirement that reaches the six leakages of commercial exhaust state, to various condition adaptability extremely strong, long service life, promote.
The specific size of each section of the metal hose in the embodiment can be set by the resonance searching condition after the sine frequency sweep of the vibration table and the engine parameters to avoid resonance to a greater extent, and further prolong the service life of the metal hose assembly.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (7)
1. The high-adaptability metal hose assembly for exhaust of the commercial vehicle is characterized by comprising a metal hose, wherein 1-2 layers of telescopic pipes are arranged in the metal hose in a matching manner, and a plurality of anti-resonance elements which are uniformly distributed are arranged between the telescopic pipe on the outermost side and the metal hose; the metal hose comprises at least one weak deformation section and strong deformation sections, wherein the weak deformation sections are integrally formed, the strong deformation sections are arranged on two sides of each weak deformation section at intervals, the strong deformation sections are of dense-wave corrugated structures, and the weak deformation sections are of straight cylindrical structures or corrugated structures, the heights of wave crests of the corrugated structures are lower than those of the strong deformation sections, and the distances between the wave crests of the corrugated structures are larger than those of the strong deformation sections.
2. The metal hose assembly for high-adaptability commercial vehicle exhaust according to claim 1, wherein the metal hose is of a single-layer structure or a double-layer structure.
3. The metal hose assembly for high-adaptability commercial vehicle exhaust according to claim 1, wherein the wave crest of the corrugated structure of the strong deformation section is a circular wave structure or is formed into a sharp-angled flat structure.
4. The metal hose assembly for high-adaptability commercial vehicle exhaust according to claim 1, wherein when the weak deformation section is provided with a corrugated structure, the corrugated structure is a flat wave or a gradual wave.
5. The high-adaptability metal hose assembly for exhaust of commercial vehicles according to claim 1, wherein a transition section is further extended on the outer side of the strong deformation sections on both sides of the metal hose in a uniform forming manner, joints are respectively fixed on the transition sections, and an outer ring capable of wrapping the corrugated structures of the strong deformation sections on both sides is further arranged on the periphery of the fixing position of the metal hose and the joints.
6. The metal hose assembly for high-adaptability commercial vehicle exhaust according to claim 1, wherein the length-diameter ratio of the metal hose is greater than 1.6.
7. The metal hose assembly for high-adaptability commercial vehicle exhaust according to claim 1, wherein the metal hose comprises a weak deformation section and strong deformation sections at two ends of the weak deformation section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222228496.0U CN218236461U (en) | 2022-08-24 | 2022-08-24 | High adaptation type metal collapsible tube assembly for commercial car exhaust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222228496.0U CN218236461U (en) | 2022-08-24 | 2022-08-24 | High adaptation type metal collapsible tube assembly for commercial car exhaust |
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| Publication Number | Publication Date |
|---|---|
| CN218236461U true CN218236461U (en) | 2023-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222228496.0U Active CN218236461U (en) | 2022-08-24 | 2022-08-24 | High adaptation type metal collapsible tube assembly for commercial car exhaust |
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| Country | Link |
|---|---|
| CN (1) | CN218236461U (en) |
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2022
- 2022-08-24 CN CN202222228496.0U patent/CN218236461U/en active Active
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