Novel catalyst support structure

Abstract

The utility model relates to the technical field of supports, in particular to a novel catalytic converter support structure which comprises a catalytic converter body and a connecting part for connecting the catalytic converter body and a transmission, the catalytic converter body comprises a catalytic converter front stage, and one end of the catalytic converter front stage is fixedly connected with a catalytic converter rear stage through a middle pipe. One end of the catalytic converter rear stage is fixedly connected with a corrugated pipe through an end cover; the connecting component comprises a first combined support fixedly connected to the transmission, a second combined support fixedly connected with the catalytic converter body and a loose-leaf type support, the catalytic converter support is thinned, meanwhile, the loose-leaf type structure is adopted, the rigidity of the catalytic converter in the Z direction is ensured, and the modal requirement is met. The weight reduction effect is that the catalyst support is thinned, and the overall weight of the catalyst is obviously reduced. And the off-space risk during assembly is reduced, the stress influence on the transmission installation point is reduced, and therefore the fracture risk of the installation point is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of brackets, in particular to a novel catalyst bracket structure. Background Art

[0002] As national emission regulations become increasingly stringent, catalyst assembly structures are becoming more complex, placing higher demands on their durability. Currently, most domestic catalyst mounting methods can be categorized into four types: 1. Mounting without a bracket, solely by connecting the catalyst inlet flange to the exhaust manifold or turbocharger outlet flange. This solution is suitable for simpler, lighter catalysts, and is more common in National IV and National V emissions standards. 2. A single welded bracket is secured to the powertrain. However, this mounting method introduces obstructions and the risk of air separation, requiring high precision in the catalyst's manufacturing process. This approach is less common. 3. A combined bracket is secured to the powertrain, effectively reducing obstructions and air separation risks, but requires more mounting bolts or nuts, requiring more space. Currently, National VI close-coupled catalysts are widely used. 4. The catalyst is connected to the exhaust manifold or turbocharger using a spherical flange or bellows, with the catalyst body then attached to the vehicle body via rubber lugs. However, this approach is only applicable to chassis-mounted catalysts. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0004] In view of the above-mentioned problems or the problems in the prior art of mutual interference between simulation cabinets and large-area displacement, the present utility model is proposed.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a new catalyst support structure includes a catalyst body and a connecting component connecting the catalyst body and the transmission, the catalyst body includes a catalyst front stage, one end of the catalyst front stage is fixedly connected to the catalyst rear stage through an intermediate pipe, and one end of the catalyst rear stage is fixedly connected to a bellows through an end cover; the connecting component includes a first combined bracket fixedly connected to the transmission and a second combined bracket and a loose-leaf bracket fixedly connected to the catalyst body.

[0006] As a preferred solution of the novel catalyst support structure of the utility model, one end of the movable support is fixedly connected to the cylinder of the rear stage of the catalyst, and the other end of the movable support is installed on the transmission.

[0007] As a preferred solution of the new catalyst bracket structure of the utility model, the movable bracket consists of two parts, one is the first fixed part, and the other is the second fixed part. The first fixed part is a U-shaped groove, and the side of the first fixed part is trapezoidal.

[0008] As a preferred solution of the novel catalyst support structure of the utility model, the side surface of the first fixing part consists of two sides perpendicular to each other and two sides at obtuse angles to each other, and the two sides perpendicular to each other of the side surface of the first fixing part are of different lengths.

[0009] As a preferred solution of the new catalyst support structure of the utility model, the angle between the short sides of the side of the first fixed part that are perpendicular to each other and the side that is obtuse to each other is an obtuse angle, and the angle between the long sides of the side of the first fixed part that are perpendicular to each other and the side that is obtuse to each other is an acute angle.

[0010] As a preferred solution of the novel catalyst support structure of the utility model, wherein: of the two sides of the side surfaces of the first fixing portion which form an obtuse angle with each other, one side is concave and the other side is convex.

[0011] As a preferred solution of the new catalyst bracket structure of the utility model, the first fixing part and the second fixing part are connected by a pin shaft, and the second fixing part is divided into three parts, wherein the first part is a trapezoidal surface, the second part is a set of symmetrical ear surfaces, and the third part is a fixing surface.

[0012] As a preferred solution of the novel catalyst support structure of the present invention, the ear surface is fixedly connected to the trapezoidal surface and the side wall of the fixed surface, and the ear surface is fixedly connected to the two parallel sides of the trapezoidal surface.

[0013] As a preferred solution of the novel catalyst support structure of the utility model, the inclined surface of the trapezoidal surface is fixedly connected to one side of the fixing surface, the fixing surface and the trapezoidal surface form an obtuse angle, and a positioning hole is opened on the fixing surface.

[0014] As a preferred solution of the new catalyst bracket structure of the utility model, wherein: the first combined bracket and the second combined bracket are both thinned to 2 mm, one end of the second combined bracket is fixedly connected to the intermediate pipe, and the other end of the second combined bracket is fixed to the cylinder block of the engine, one end of the first combined bracket is fixedly connected to the transmission, and the other end of the first combined bracket is fixedly connected to the rear stage of the catalyst.

[0015] The beneficial effects of this utility model include: ensuring that the catalyst modal meets requirements: By thinning the catalyst bracket and adopting a loose-leaf structure, the catalyst's stiffness in the Z direction is ensured to meet modal requirements. Weight reduction: Thinning the catalyst bracket significantly reduces the overall weight of the catalyst. Reducing the risk of mounting point fracture: reducing the risk of air separation during assembly and reducing the stress on the transmission mounting point, thereby reducing the risk of mounting point fracture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0017] Figure 1 It is an overall schematic diagram of the utility model.

[0018] Figure 2 This is another perspective view of the entire utility model.

[0019] Figure 3 This is an overall schematic diagram of the loose-leaf stand.

[0020] Figure 4 This is an exploded diagram of the loose-leaf bracket.

[0021] In the picture:

[0022] 100, catalyst body; 101, catalyst front stage; 102, catalyst rear stage; 101a, intermediate pipe; 103, bellows; 200, connecting component; 201, first combined bracket; 202, second combined bracket; 203, hinged bracket; 203a, first fixing part; 203b, second fixing part; 203c, pin; 203d, trapezoidal surface; 203e, ear surface; 203f, fixing surface; 203g, positioning hole. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0026] Example 1

[0027] Reference Figures 1 to 4 , which is the first embodiment of the present utility model, provides a new catalyst support structure, which includes a catalyst body 100 and a connecting component 200 connecting the catalyst body 100 and the transmission. The catalyst body 100 includes a catalyst front stage 101, one end of the catalyst front stage 101 is fixedly connected to the catalyst rear stage 102 through an intermediate pipe 101a, and one end of the catalyst rear stage 102 is fixedly connected to a bellows 103 through an end cover; the connecting component 200 includes a first combined bracket 201 fixedly connected to the transmission, a second combined bracket 202 fixedly connected to the catalyst body 100, and a hinged bracket 203.

[0028] The connecting component 200 securely connects the catalyst to the transmission and ensures its stability, ensuring it meets modal requirements. It primarily comprises a first assembly bracket 201 secured to the transmission, a second assembly bracket 202 fixedly connected to the catalyst body 100, and a hinged bracket 203. These brackets work together to effectively support the catalyst in all directions, reducing stress concentration at the mounting point and minimizing the risk of failure, such as cracking. Specifically, the hinged bracket 203 not only provides the necessary rigidity in the Z direction but also, through its thinned design, reduces the risk of liftoff during assembly, further enhancing the reliability and durability of the overall structure.

[0029] Specifically, the loose-leaf bracket 203 is composed of two parts, one part is the first fixed part 203a, and the other part is the second fixed part 203b. The first fixed part 203a is a U-shaped groove, and the side of the first fixed part 203a is trapezoidal. The side of the first fixed part 203a is composed of two sides perpendicular to each other and two sides at an obtuse angle to each other. The two sides perpendicular to each other on the side of the first fixed part 203a are of different lengths. The angle between the short sides perpendicular to each other on the side of the first fixed part 203a and the side at an obtuse angle to each other is an obtuse angle. The angle between the long sides perpendicular to each other on the side of the first fixed part 203a and the side at an obtuse angle to each other is an acute angle. Of the two sides at an obtuse angle to each other on the side of the first fixed part 203a, one is concave and the other is convex.

[0030] Among them, the first fixing part 203a of the loose-leaf bracket 203 is a U-shaped groove. This design can provide good stability. The side of the first fixing part 203a is trapezoidal. This shape can adapt to installation points of different sizes and shapes, thereby improving the flexibility and adaptability of installation. The first fixing part 203a is connected to the catalyst. The concave side of the first fixing part 203a is connected to the catalyst. This design increases the contact area and can better disperse stress, improve the fatigue resistance of the bracket, extend the service life, provide better fit and stability during installation, reduce the risk of air separation during installation, ensure close contact between the bracket and the installation point, and reduce stress concentration. The second fixing part 203b is installed on the convex side of the first fixing part 203a. Through these unique designs, the loose-leaf bracket 203 not only provides the necessary stiffness in the Z direction to ensure that the modal requirements of the catalyst are met, but also provides higher reliability and durability during the installation process, significantly reduces stress concentration at the installation point, and reduces the risk of failure such as cracking at the installation point.

[0031] It should be noted that the first fixing part 203a and the second fixing part 203b are connected by a pin shaft 203c, and the second fixing part 203b is divided into three parts, wherein the first part is a trapezoidal surface 203d, the second part is a group of symmetrical ear surfaces 203e, and the third part is a fixing surface 203f. The ear surface 203e is fixedly connected to the trapezoidal surface 203d and the side wall of the fixing surface 203f, the ear surface 203e is fixedly connected to the two sides parallel to the trapezoidal surface 203d, the inclined surface of the trapezoidal surface 203d is fixedly connected to one side of the fixing surface 203f, the fixing surface 203f forms an obtuse angle with the trapezoidal surface 203d, and a positioning hole 203g is provided on the fixing surface 203f.

[0032] Among them, the ear surface 203e is fixedly connected to the two sides parallel to the trapezoidal surface 203d, which increases the stability and strength of the connection. The ear surface 203e is fixedly connected to the two sides parallel to the trapezoidal surface 203d, which increases the stability and strength of the connection and further disperses the stress. The first fixed part 203a and the second fixed part 203b are connected by a pin 203c to form a loose-leaf structure. This design increases flexibility and improves durability while ensuring rigidity. The design of the loose-leaf structure can change the angle between the first fixed part 203a and the second fixed part 203b. After the angle of the two parts is adjusted, the two parts are fixed with the pin 203c to adapt to the installation and fixation of the catalyst and the transmission under various conditions. The positioning hole 203g on the fixed surface 203f is used for the installation of the loose-leaf bracket 203 and the transmission.

[0033] The obtuse angle between the fixing surface 203f and the trapezoidal surface 203d allows stress to be distributed over a larger area during installation and use, rather than concentrated at a single point. This design helps reduce localized stress concentration, thereby lowering the risk of cracking at the mounting point. By distributing stress, the durability of the fixing point is improved, extending the lifespan of the bracket and ensuring the stability and reliability of the catalyst over extended use. The fixing surface 203f is fixed to the inclined surface of the trapezoidal surface 203d, forming a stable triangular structure. This structure provides high mechanical rigidity, better resisting external forces and ensuring the stability of the catalyst in all directions. The inclined fixing design effectively reduces deformation of the fixing surface 203f when subjected to stress, ensuring that the catalyst remains in position and maintains good working condition over extended use. The inclined fixing design evenly distributes stress between the fixing surface 203f and the trapezoidal surface 203d, avoiding the occurrence of stress concentration points. This design helps extend the lifespan of the bracket and reduces fatigue damage caused by stress concentration.

[0034] Example 2

[0035] Reference Figures 1 to 4 , which is the second embodiment of the present utility model, includes one end of a movable bracket 203 fixedly connected to the cylinder of the catalyst rear stage 102, and the other end of the movable bracket 203 is installed on the transmission. The first combined bracket 201 and the second combined bracket 202 are both thinned to 2 mm, one end of the second combined bracket 202 is fixedly connected to the intermediate pipe 101a, and the other end of the second combined bracket 202 is fixed to the cylinder block of the engine, one end of the first combined bracket 201 is fixedly connected to the transmission, and the other end of the first combined bracket 201 is fixedly connected to the catalyst rear stage 102.

[0036] One end of the first combined bracket 201 is fixedly connected to the transmission and the other end is fixedly connected to the catalyst rear stage 102, providing an additional support point and enhancing overall stability. The second combined bracket 202 has one end fixedly connected to the intermediate pipe 101a and the other end fixed to the engine cylinder block, providing a third support point and further enhancing the stability of the catalyst.

[0037] During use, through the multi-point support of the three brackets, the stress is evenly distributed among the brackets, reducing the stress concentration at a single installation point and the risk of cracking at the installation point. The synergistic effect of the loose-leaf bracket 203, the first combined bracket 201 and the second combined bracket 202 ensures the stability of the catalyst in all directions and improves the overall durability.

[0038] In summary, the hinged bracket 203 provides the necessary rigidity in the Z direction, ensuring the stability of the catalyst in all directions and meeting modal requirements. Both the first and second combined brackets 201 and 202 are thinned to 2 mm. Despite the reduced thickness, the hinged structure and combined bracket design maintain sufficient rigidity to meet the modal requirements of the catalyst. The hinged bracket 203 design reduces the risk of air separation during installation, ensures close contact between the bracket and the mounting point, and reduces stress concentration at the mounting point.

[0039] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values (e.g., temperature, pressure, etc.), alarm arrangement, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed can be made up of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete elements can be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure of the execution of the function described herein, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0040] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0041] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A novel catalyst support structure, characterized by: It comprises a catalyst body (100) and a connecting component (200) connecting the catalyst body (100) and a transmission, The catalyst body (100) comprises a catalyst front stage (101), one end of the catalyst front stage (101) is fixedly connected to a catalyst rear stage (102) via an intermediate tube (101a), and one end of the catalyst rear stage (102) is fixedly connected to a bellows (103) via an end cover; The connecting component (200) comprises a first combined bracket (201) fixedly connected to the transmission, and a second combined bracket (202) and a loose-leaf bracket (203) fixedly connected to the catalyst body (100).

2. The novel catalyst support structure according to claim 1, characterized in that: One end of the movable bracket (203) is fixedly connected to the cylinder of the catalyst rear stage (102), and the other end of the movable bracket (203) is installed on the transmission.

3. The novel catalyst support structure according to claim 2, characterized in that: The movable bracket (203) consists of two parts, one part is a first fixing part (203a), and the other part is a second fixing part (203b). The first fixing part (203a) is a U-shaped groove, and the side surface of the first fixing part (203a) is trapezoidal.

4. The novel catalyst support structure according to claim 3, characterized in that: The side surface of the first fixing portion (203a) consists of two sides perpendicular to each other and two sides forming an obtuse angle with each other, and the two sides perpendicular to each other of the side surface of the first fixing portion (203a) are of different lengths.

5. The novel catalyst support structure according to claim 4, characterized in that: The angle between the mutually perpendicular short sides of the side of the first fixing part (203a) and the side which is an obtuse angle is an obtuse angle, and the angle between the mutually perpendicular long sides of the side of the first fixing part (203a) and the side which is an obtuse angle is an acute angle.

6. The novel catalyst support structure according to claim 5, characterized in that: Of the two sides of the first fixing portion (203a) that form an obtuse angle with each other, one side is concave and the other side is convex.

7. The novel catalyst support structure according to claim 6, characterized in that: The first fixing part (203a) and the second fixing part (203b) are connected via a pin shaft (203c); the second fixing part (203b) is divided into three parts, wherein the first part is a trapezoidal surface (203d), the second part is a group of symmetrical ear surfaces (203e), and the third part is a fixing surface (203f).

8. The novel catalyst support structure according to claim 7, characterized in that: The ear surface is fixedly connected to the trapezoidal surface (203d) and the side wall of the fixed surface (203f), and the ear surface (203e) is fixedly connected to two sides parallel to the trapezoidal surface (203d).

9. The novel catalyst support structure according to claim 8, characterized in that: The inclined surface of the trapezoidal surface (203d) is fixedly connected to one side of the fixed surface (203f), the fixed surface (203f) and the trapezoidal surface (203d) form an obtuse angle, and a positioning hole (203g) is provided on the fixed surface (203f).

10. The novel catalyst support structure according to any one of claims 1 to 9, characterized in that: The first combined bracket (201) and the second combined bracket (202) are both thinned to 2 mm; one end of the second combined bracket (202) is fixedly connected to the intermediate pipe (101a); the other end of the second combined bracket (202) is fixedly connected to the cylinder block of the engine; one end of the first combined bracket (201) is fixedly connected to the transmission; the other end of the first combined bracket (201) is fixedly connected to the catalyst rear stage (102).

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