CN214355516U

CN214355516U - Passenger car exhaust system lifting hook structure

Info

Publication number: CN214355516U
Application number: CN202120314406.2U
Authority: CN
Inventors: 滕继弘; 杨小东; 齐冬亮; 赵宁; 张文文
Original assignee: Wuxi Weifu Lida Catalytic Converter Co Ltd
Current assignee: Wuxi Weifu Lida Catalytic Converter Co Ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-10-08
Anticipated expiration: 2031-02-03

Abstract

The utility model relates to a lifting hook structure of a passenger vehicle exhaust system, which comprises a double-head lifting hook and a pipeline, wherein the middle arc section of the double-head lifting hook is fixedly jointed and welded with the pipeline; the bent parts at the two sides of the double-end lifting hook are respectively welded with a metal casing, and the metal casing comprises an upper clam shell and a lower clam shell; the inner surfaces of the upper clam shell and the lower clam shell are respectively attached to the surfaces of the double-end lifting hooks and are welded and fixed, and the occlusal surfaces of the upper clam shell and the lower clam shell are welded and fixed; the metal casing is provided with a welding groove. The utility model discloses a metal casing welding strengthens local rigidity in the department of bending of lifting hook, reduces the stress concentration of the department of bending, promotes whole exhaust system's reliability.

Description

Passenger car exhaust system lifting hook structure

Technical Field

The utility model relates to a passenger car exhaust system lifting hook structure belongs to lifting hook technical field.

Background

The hook is a very important component in passenger car aftertreatment packaging. The lifting lug is connected with the automobile chassis, so that the effects of treating the tail gas of an engine and eliminating noise are ensured. The reliability requirements for the hook are high, since it is also necessary to withstand the action of the entire exhaust system, which, in the event of a fracture, would have a great influence on the use of the entire exhaust system and thus of the vehicle. The bending part of the lifting hook is a part which is easy to generate stress concentration and is also a high-occurrence area of fracture. For the bent part, the existing reinforcing method is to change the material with better rigidity, or to weld an auxiliary lifting hook beside the main lifting hook. Both of these ways have a large impact on cost.

Disclosure of Invention

An object of the utility model is to overcome the not enough of existence among the prior art, provide a passenger car exhaust system lifting hook structure, it is welded in the department of bending at the lifting hook through the metal casing shell, strengthens local rigidity, reduces the stress concentration of the department of bending, promotes whole exhaust system's reliability.

According to the utility model provides a technical scheme: a lifting hook structure of an exhaust system of a passenger car comprises a double-end lifting hook and a pipeline, wherein the middle arc section of the double-end lifting hook is fixedly jointed and welded with the pipeline; the bent parts at the two sides of the double-end lifting hook are respectively welded with a metal casing, and the metal casing comprises an upper clam shell and a lower clam shell; the inner surfaces of the upper clam shell and the lower clam shell are respectively attached to the surfaces of the double-end lifting hooks and are welded and fixed, and the occlusal surfaces of the upper clam shell and the lower clam shell are welded and fixed; the metal casing is provided with a welding groove.

Furthermore, the inner surfaces and the occlusal surfaces of the upper clam shell and the lower clam shell are smooth.

Further, arc inner concave parts are respectively arranged on the side edges of the two sides of the upper clam shell and the side edge of the lower clam shell, and after the upper clam shell is occluded with the lower clam shell, the upper clam shell is matched with the arc inner concave parts on the two sides of the lower clam shell to form two welding grooves.

Further, the material of metal casing is stainless steel.

Compared with the prior art, the utility model, have following advantage:

the metal casing is welded at the bending part of the lifting hook, so that the local rigidity is enhanced, and the stress concentration at the bending part is reduced. Stress is dispersed through further welding groove again, reaches the effect that promotes lifting hook intensity, has reduced the risk that the lifting hook takes place the fracture in the department of bending greatly, promotes whole exhaust system's reliability. The cost is also low and controllable.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the metal jacket of the present invention.

Fig. 3 is a schematic view of the metal jacket of the present invention.

Fig. 4 is a partial enlarged view of fig. 1I.

Description of reference numerals: 1-double-head lifting hook, 2-pipeline, 3-metal casing, 4-upper clam shell, 5-lower clam shell, 6-welding groove and 7-occlusal surface.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, a lifting hook structure of an exhaust system of a passenger car comprises a double-head lifting hook 1 and a pipeline 2, wherein a middle arc section of the double-head lifting hook 1 is fixedly attached to the pipeline 2 in a welding manner; the metal casing 3 is welded at the bent parts at the two sides of the double-end lifting hook 1 respectively, and the metal casing 3 comprises an upper clam shell 4 and a lower clam shell 5; the inner surfaces of the upper clam shell 4 and the lower clam shell 5 are respectively attached to the surface of the double-head lifting hook 1 and are welded and fixed, and the occlusal surface 7 of the upper clam shell 4 and the lower clam shell 5 are welded and fixed; the metal jacket 3 is provided with a welding groove 6.

The inner surfaces and the occlusal surface 7 of the upper clam shell 4 and the lower clam shell 5 are smooth.

Go up the clamshell 4 and be equipped with the arc inner concave part respectively with the both sides side of clamshell 5 down, go up

clamshell

4 and 5 interlock backs down, go up the clamshell 4 and form two welding grooves 6 with the arc inner concave part cooperation of 5 both sides of clamshell down.

The metal casing 3 is made of stainless steel.

In fig. 2 and 3, the inner surfaces of the upper clam shell 4 and the lower clam shell 5 of the metal shell 3 are required to ensure certain profile and smoothness so as to ensure smooth joint with the outer surface of the double-head lifting hook 1 and welding quality. The same is true for the planes which need to be occluded up and down by two clams, so that the welding of the clams is ensured. The welded structure of the upper and lower clamshells is the metal casing 3 for reinforcing the hook, and the casing is also provided with a welding groove 6.

As shown in fig. 1 and 4, the utility model relates to a lifting hook structure of a passenger car exhaust system, which comprises an exhaust system double-end lifting hook 1, a pipeline 2 welded with the double-end lifting hook 1, and an upper clam shell 4 and a lower clam shell 5. The arc section of the double-end lifting hook 1 is welded with the pipeline 2 in an attaching mode, and pier heads on two sides of the arc section are connected with lifting lugs of an automobile chassis.

After the inner surfaces of the upper and lower clamshells of the metal casing 3 are attached to the outer surface of the lifting hook, the clam shell occlusal surface is welded through a tool. And then the metal casing 3 is welded with the arc surface of the double-head lifting hook 1, the full welding is ensured by the arc surface, and the stress concentration phenomenon caused by low quality of the welding seam is prevented.

After the whole metal casing 3 is completely welded at the bending part of the double-end lifting hook 1, secondary reinforcing welding is carried out in the welding groove 6 of the casing.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A lifting hook structure of an exhaust system of a passenger car comprises a double-end lifting hook (1) and a pipeline (2), wherein the middle arc section of the double-end lifting hook (1) is fixedly attached to the pipeline (2) in a welding mode; the method is characterized in that: the bent parts of the two sides of the double-end lifting hook (1) are respectively welded with a metal casing (3), and the metal casing (3) comprises an upper clam shell (4) and a lower clam shell (5); the inner surfaces of the upper clam shell (4) and the lower clam shell (5) are respectively attached to the surface of the double-head lifting hook (1) and are welded and fixed, and the occlusal surface (7) of the upper clam shell (4) and the lower clam shell (5) are welded and fixed; the metal casing (3) is provided with a welding groove (6).

2. The passenger car exhaust system hook structure according to claim 1, wherein the inner surfaces and the occlusal surfaces (7) of the upper clam shell (4) and the lower clam shell (5) are smooth.

3. The passenger car exhaust system lifting hook structure according to claim 1, wherein the upper clam shell (4) and the lower clam shell (5) are respectively provided with arc-shaped concave parts on both side edges, and after the upper clam shell (4) is occluded with the lower clam shell (5), the upper clam shell (4) and the lower clam shell (5) are matched with the arc-shaped concave parts on both sides to form two welding grooves (6).

4. The passenger car exhaust system hook structure according to claim 1, wherein the metal casing (3) is made of stainless steel.