CN-224214250-U - Non-road aftertreatment heat insulation structure

CN224214250UCN 224214250 UCN224214250 UCN 224214250UCN-224214250-U

Abstract

The utility model provides a non-road post-treatment heat insulation structure, wherein heat insulation cotton is wrapped outside an interface flange on a post-treatment body, two side edge regions of the heat insulation cotton are overlapped, two ends of a tension spring are respectively fixed on the two side edge regions, the tension spring is tensioned to tighten outer-layer heat insulation cotton, the rear end part of the heat insulation cotton is provided with a skirt edge protruding towards the side, and the skirt edge is adhered and fixed on the post-treatment body. The utility model performs tight heat insulation protection on the positions of the post-treatment air inlet flange and the post-treatment air outlet flange.

Inventors

ZHANG RAN
WU PENG
XING HAN
LIU JINGPEI
HE CUNJUN
XU JINGMING
WANG BINBIN

Assignees

郑州精益达汽车零部件有限公司

Dates

Publication Date: 20260508
Application Date: 20250703

Claims (10)

1. A non-road post-treatment heat insulation structure is characterized in that outer heat insulation cotton is wrapped outside an interface flange on a post-treatment body, two side edge areas of the outer heat insulation cotton are overlapped, two ends of a tension spring are respectively fixed on the two side edge areas, the tension spring is tensioned to tighten the outer heat insulation cotton, a skirt edge protruding towards the side is arranged at the rear end of the outer heat insulation cotton, and the skirt edge is attached and fixed on the post-treatment body.
2. A non-roadway aftertreatment insulation construction according to claim 1 wherein the front end of the outer insulation wool extends beyond the mounting plane of the interface flange.
3. The non-road aftertreatment heat insulation structure according to claim 1 wherein the skirt of the outer layer heat insulation cotton is provided with a plurality of through holes, and rivets pass through the through holes on the skirt and the corresponding holes on the aftertreatment body to fix the outer layer heat insulation cotton on the aftertreatment body.
4. The non-road aftertreatment heat insulation structure according to claim 1 is characterized by comprising an inner-layer heat insulation cotton, wherein the inner-layer heat insulation cotton is wrapped outside an interface flange on the aftertreatment body, two side edge areas of the inner-layer heat insulation cotton are overlapped, a semi-annular skirt edge protruding towards the side is arranged at the rear end part of the inner-layer heat insulation cotton, and the skirt edge is adhered and fixed on the aftertreatment body.
5. The non-road aftertreatment heat insulation structure according to claim 4 wherein the outer layer heat insulation cotton is wrapped outside the inner layer heat insulation cotton, and the rear end of the outer layer heat insulation cotton is provided with a semi-annular skirt protruding sideways, and the skirt is attached and fixed on the aftertreatment body.
6. A non-road aftertreatment insulation construction according to claim 4 wherein the inner and outer insulation skirts are joined to form an annular body.
7. A non-roadway aftertreatment insulation construction according to claim 4 wherein the front end of the inner insulation wool extends beyond the mounting plane of the interface flange.
8. A non-road aftertreatment heat insulation structure according to claim 4 wherein the skirt of the inner layer heat insulation cotton is provided with a plurality of through holes, and rivets pass through the through holes on the skirt and openings at corresponding positions on the aftertreatment body to fix the inner layer heat insulation cotton on the aftertreatment body.
9. The non-road aftertreatment heat insulation structure according to claim 1 wherein the two side edge regions of the outer heat insulation cotton are respectively provided with annular buckles, and two ends of the tension spring are fixed on the two annular buckles corresponding to the two side edge regions.
10. The non-road aftertreatment heat insulation structure according to claim 9 is characterized in that the annular buckle is formed by fixing cotter pins on heat insulation cotton after penetrating through the heat insulation cotton, the end parts of the cotter pins are annular buckles, and metal gaskets are arranged at the two ends of the cotter pins after penetrating through the heat insulation cotton.

Description

Non-road aftertreatment heat insulation structure Technical Field The utility model belongs to the technical field of engines, and particularly relates to a non-road post-treatment heat insulation structure. Background Off-road, i.e., off-road mobile machine, refers to a machine that is not on the road in a normal use scenario, such as a work machine, agricultural machine, forestry machine, etc. The engine of the road vehicle generally does not perform heat insulation protection on the joint positions of all parts of the exhaust system, but the whole exhaust system is required to be subjected to heat insulation protection because of special working scenes of non-road machinery, and the post-treatment interface flange position also needs to be subjected to heat insulation protection. The existing post-treatment basically has heat insulation protection for the whole except for the flange positions of the air inlet flange and the air outlet. The heat insulation protection of the post-treatment air inlet flange and the air outlet flange is generally carried out by a host factory, and after the post-treatment is installed, the heat insulation material is wrapped on the outer layer of the post-treatment interface flange. The post-treatment interface of part of the vehicle type is short, so that the connecting part of the flange of the post-treatment interface cannot be tightly wrapped, and flammable scraps are often accumulated in the agricultural machinery, so that fire is easily caused. Disclosure of Invention The utility model provides a non-road post-treatment heat insulation structure, which aims to solve the defects in the prior art and performs tight heat insulation protection on the positions of a post-treatment air inlet flange and an air outlet flange. The technical scheme adopted for solving the technical problems is as follows: a non-road aftertreatment insulation construction, characterized in that: The outer layer heat insulation cotton is wrapped outside the joint flange on the aftertreatment body, two side edge areas of the outer layer heat insulation cotton are overlapped, two ends of the tension spring are respectively fixed on the two side edge areas, the tension spring is tensioned to tension the outer layer heat insulation cotton, the rear end part of the outer layer heat insulation cotton is provided with a skirt edge protruding towards the side, and the skirt edge is attached and fixed on the aftertreatment body. The front end part of the outer layer heat insulation cotton exceeds the installation plane of the interface flange. A plurality of through holes are formed in the skirt edge of the outer layer heat-insulating cotton, and rivets penetrate through the through holes in the skirt edge and holes in corresponding positions on the post-treatment body to fix the outer layer heat-insulating cotton on the post-treatment body. The device comprises an inner-layer heat-insulating cotton, wherein the inner-layer heat-insulating cotton is wrapped outside an interface flange on a post-treatment body, two side edge areas of the inner-layer heat-insulating cotton are overlapped, a semi-annular skirt edge protruding to the side is arranged at the rear end part of the inner-layer heat-insulating cotton, and the skirt edge is adhered and fixed on the post-treatment body; The rear end part of the outer layer heat insulation cotton is provided with a semi-annular skirt edge protruding to the side, and the skirt edge is attached and fixed on the aftertreatment body; The skirt edge of the inner layer heat-insulating cotton and the skirt edge of the outer layer heat-insulating cotton are connected and combined into an annular body. The front end part of the inner layer heat insulation cotton exceeds the installation plane of the interface flange. A plurality of through holes are formed in the skirt edge of the inner-layer heat-insulating cotton, and rivets penetrate through the through holes in the skirt edge and holes in corresponding positions on the post-treatment body to fix the inner-layer heat-insulating cotton on the post-treatment body. The two side edge regions of the outer layer heat insulation cotton are respectively provided with a circular buckle, and two ends of the tension spring are fixed on the two circular buckles corresponding to the two side edge regions. The circular buckle has the structure that the cotter pin penetrates through the heat insulation cotton and then is fixed on the heat insulation cotton, and the end part is the circular buckle. Cotter pin passes through heat insulation cotton and metal gaskets are arranged at two ends. The utility model has the advantages that: According to the utility model, the tension spring is used for tightly wrapping the interface flange, the skirt edge of the heat insulation cotton is combined with the aftertreatment body to play a role in fixing and insulating the junction position, and the outer end surface of the heat insulation cotton exceed