Metal hose assembly for commercial vehicle exhaust
A technology for metal hoses and commercial vehicles, which is applied in the direction of hoses, exhaust devices, pipes, etc., can solve the problems of small axial and radial compensation, high assembly tolerance requirements, and cannot be well applied, and achieve axial and radial displacement compensation effect, low installation accuracy requirements, and the effect of expanding the applicability of the occasion
Active Publication Date: 2018-02-06
JIANGYIN DESEN AUTO PARTS CO LTD
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Problems solved by technology
As the society's call for environmental protection is getting stronger and the country's exhaust emission standards are becoming more and more stringent, the metal hoses for commercial vehicles that are mainly made of telescopic tubes, spiral tubes or corrugated tubes can no longer be used. Meet the requirements of low leakage or even zero leakage, and metal hoses made of bellows and spiral tubes have always had problems such as high rigidity, inconvenient installation, and short service life; although the current passenger cars use bellows plus Braided mesh or the structure of a layer of telescopic tube plus a layer of bellows and braided mesh can achieve low leakage or even zero leakage. However, this structure can only be compressed, and the scale that can be stretched is very small. The compensation is very small, and the assembly tolerance requirements are high, which cannot be well adapted to the installation and use requirements of commercial vehicles with large assembly tolerances. People urgently need to find a better way to solve these problems
Method used
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[0020] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.
[0021] Such as Figure 1~2 As shown, a metal hose assembly for commercial vehicle exhaust includes a metal hose and joints 4 respectively fixed at both ends of the metal hose. It is characterized in that the metal hose includes a layer of dense corrugated 1. Inside the corrugated tube 1, a first telescopic tube 2 and a second telescopic tube 3 are arranged sequentially from the outside to the inside. The first telescopic tube 2 and the second telescopic tube 3 are turned upside down. Two telescopic tubes 3 are used to determine the exhaust direction, the inner diameter of the bellows 1 matches the outer diameter of the first telescopic tube 2, and the inner diameter of the first tele...
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The invention provides a metal hose assembly for commercial vehicle exhaust. The metal hose assembly comprises a metal hose and joints (4) which are respectively fixed to both ends of the metal hose. The metal hose assembly is characterized in that the metal hose comprises a layer of condensation-wave corrugated pipe (1); a first telescopic pipe (2) and a second telescopic pipe (3) are sequentially arranged from outside to inside; the first telescopic pipe (2) and the second telescopic pipe (3) are mutually inverted; the second telescopic pipe (3) is used for determining the exhaust direction; and the internal diameter of the corrugated pipe (1) is matched with the external diameter of the first telescopic pipe (2). The metal hose in the metal hose assembly for commercial vehicle exhaust adopts the double-layer inverted telescopic pipes as the main support and additionally uses the one layer of corrugated pipe; and thus, the metal hose assembly has the advantages of wide applicability, favorable damping and noise-reduction effects, low requirements for installation accuracy, high antifatigue coefficient, long service life, zero emission, favorable axial and radial displacement compensation effects, and high practicality.
Description
technical field [0001] The invention belongs to the field of auto parts design, and mainly relates to a metal hose assembly for commercial vehicle exhaust. Background technique [0002] The metal hose for automobile exhaust is used as a flexible element in the automobile to absorb and slow down the vibration and displacement of the exhaust system and to compensate for the dimensional changes of pipelines and equipment caused by thermal expansion and contraction, mechanical displacement or vibration, or axial, lateral and The role of angular displacement, its main properties include stiffness, strength, stability and fatigue life. As the society's call for environmental protection becomes stronger and the country's exhaust emission standards become more and more stringent, the metal hoses for commercial vehicles that have appeared at present are mainly made of telescopic tubes, spiral tubes or corrugated tubes. To meet the requirements of low leakage or even zero leakage, an...
Claims
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IPC IPC(8): F16L11/15F16L27/12F16L27/10F01N13/08
CPCF01N13/082F16L11/15F16L27/1004F16L27/12
Inventor王彪
OwnerJIANGYIN DESEN AUTO PARTS CO LTD