Auxiliary tool for disassembling and assembling three-way catalytic converter for vehicle

Abstract

The utility model discloses an auxiliary tool for disassembling and assembling a three-way catalyst for a vehicle. The auxiliary tool comprises a first connecting arm and a second connecting arm which are connected together through a locking piece, the top of the first connecting arm is fixedly connected with a first matching part, and the top of the second connecting arm is fixedly connected with a second matching part; the first matching part is matched and connected with the second matching part; the first matching part and the second matching part are connected together through a locking piece; the bottom of the first connecting arm is fixedly connected with a first welding piece, and the bottom of the second connecting arm is fixedly connected with a second welding piece. A first limiting groove and a second limiting head are arranged on the two sides of the bottom of the first matching part correspondingly. A first limiting head and a second limiting groove are arranged on the two sides of the top of the second matching part correspondingly. The first limiting head is matched and connected with the first limiting groove, and the second limiting head is matched and connected with the second limiting groove. Through the design, the three-way catalyst can be conveniently disassembled and assembled.

Description

Technical Field

[0001] The utility model belongs to the technical field of three-way catalytic converter recovery, in particular to a disassembly and assembly auxiliary tool for a three-way catalytic converter for a vehicle. Background Art

[0002] The automotive three-way catalytic converter is a device used to reduce harmful gas emissions from automobile exhaust. It is usually installed in the automobile exhaust system and converts carbon monoxide, nitrogen oxides and hydrocarbons into harmless carbon dioxide, nitrogen and water vapor through catalytic oxidation. This helps reduce the impact of automobile exhaust on the environment and human health and is an important part of modern automobile emission control systems.

[0003] The three-way catalytic converter for automobiles is usually fixed in the exhaust pipe of the automobile. To completely remove the three-way catalytic converter for recycling, the three-way catalytic converter needs to be cut off. When cutting the three-way catalytic converter, first use a cutting knife to separate one side of the three-way catalytic converter from the tailpipe and then cut the other side. At this time, the tailpipes on both sides are disconnected. Since only one side of the three-way catalytic converter is connected to the tailpipe, it is easy to shake during the cutting process, resulting in the problem of difficult cutting. After the cutting is completed, the tailpipes on both sides will also sandwich the three-way catalytic converter in the middle and make it difficult to remove. When the three-way catalytic converter is replaced for welding, the positions of the tailpipes on both sides are not easy to fix, making it difficult to weld the three-way catalytic converter in the correct position.

[0004] The patent with publication number CN220515581U discloses a cutting tool for automotive ceramic three-way catalytic converters; this tool can fix the three-way catalytic converter in a metal sleeve and then cut it with a comb-shaped blade. Obviously, using this cutting tool requires the exhaust pipe to be removed before continuing the operation. However, some cars only need to simply replace the three-way catalytic converter. Therefore, this structure is not suitable for the disassembly and assembly of automotive three-way catalytic converters. Utility Model Content

[0005] The purpose of the utility model is to provide a vehicle three-way catalytic converter disassembly and assembly auxiliary tooling to solve the following technical problems raised in the background technology:

[0006] In the prior art, when removing a three-way catalytic converter for a vehicle, it is easy to cause a problem of difficulty in cutting due to shaking.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A three-way catalytic converter disassembly and assembly auxiliary tool for a vehicle, comprising a first connecting arm and a second connecting arm connected together by a locking member;

[0009] The top of the first connecting arm is fixedly connected with a first matching portion, and the top of the second connecting arm is fixedly connected with a second matching portion; the first matching portion is matched and connected with the second matching portion; the first matching portion and the second matching portion are connected together through a locking member; the bottom of the first connecting arm is fixedly connected with a first welding member, and the bottom of the second connecting arm is fixedly connected with a second welding member;

[0010] The first matching part has a first limiting groove and a second limiting head on both sides of the bottom thereof; the first limiting head and the second limiting groove are on both sides of the top thereof; the first limiting head is connected to the first limiting groove, and the second limiting head is connected to the second limiting groove.

[0011] Furthermore, the first connecting arm is an L-shaped structure, and the second connecting arm is also an L-shaped structure.

[0012] Furthermore, a first threaded hole is provided on the first matching portion, and a second threaded hole is provided on the second matching portion; the locking member includes a bolt and a nut, and the bolt passes through the first threaded hole and the second threaded hole in sequence and then is connected to the nut.

[0013] Furthermore, the first connecting arm and the second connecting arm are both made of alloy steel.

[0014] Further, an end portion of the first connection portion is provided with an inclined chamfer, and an end portion of the second connection portion is provided with an inclined chamfer.

[0015] Furthermore, the first welding part includes a plurality of first welding connecting rods, the tops of the plurality of first welding connecting rods are fixedly connected to the first connecting arm, and the bottoms of the plurality of first welding connecting rods are spread outward to form a claw-shaped structure; the second welding part includes a plurality of second welding connecting rods, the tops of the plurality of second welding connecting rods are fixedly connected to the second connecting arm, and the bottoms of the plurality of second welding connecting rods are spread outward to form a claw-shaped structure.

[0016] Furthermore, a first connection head is fixedly connected to the bottom of the first welding connection rod, and a second connection head is fixedly connected to the bottom of the second welding connection rod.

[0017] Furthermore, the first connector is a spherical structure, and the second connector is a spherical structure.

[0018] Furthermore, the first welding part includes three first welding connecting rods; and the second welding part includes three second welding connecting rods.

[0019] Furthermore, an extension section is provided between the first connecting arm and the second connecting arm, and two ends of the extension section are respectively connected to the first connecting arm and the second connecting arm.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] By combining the first connecting arm and the second connecting arm together and connecting them with a locking piece, and then welding the first welding piece at the bottom of the first connecting arm to the exhaust pipe, and the second welding piece at the bottom of the second connecting arm to the exhaust pipe, and using the locking piece, the integrity of the first connecting arm and the second connecting arm after connection can be ensured, ensuring safety and stability during the cutting process. This design of auxiliary tooling connects the exhaust pipes on both sides together, can stably cut the three-way catalytic converter, and facilitates the removal of the three-way catalytic converter after cutting, improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the use state of the utility model;

[0024] Figure 3 It is a schematic diagram of the overall structure of the utility model after lengthening.

[0025] Markings in the figure: 1-first connecting arm, 2-second connecting arm, 3-first welding part, 301-first welding connecting rod, 302-second connecting head, 4-second welding part, 401-second welding connecting rod, 402-second connecting head, 5-locking part, 6-first limiting groove, 7-first limiting head, 8-second matching part, 9-second limiting groove, 10-second limiting head, 11-first matching part, 12-extension section. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example

[0028] A three-way catalytic converter disassembly and assembly auxiliary tooling for a vehicle, such as Figure 1 As shown, it comprises a first connecting arm 1 and a second connecting arm 2 connected together by a locking member 5;

[0029] A first matching portion 11 is fixedly connected to the top of the first connecting arm 1, and a second matching portion 8 is fixedly connected to the top of the second connecting arm 2; the first matching portion 11 is matched and connected with the second matching portion 8; the first matching portion 11 and the second matching portion 8 are connected together by a locking member 5; a first welding member 3 is fixedly connected to the bottom of the first connecting arm 1, and a second welding member 4 is fixedly connected to the bottom of the second connecting arm 2; wherein, the first welding member 3 and the second welding member are used for welding to the exhaust pipe.

[0030] The first matching portion 11 is provided with a first limiting groove 6 and a second limiting head 10 on both sides of the bottom thereof; the first limiting head 7 and the second limiting groove 9 are provided with a first limiting head 7 and both sides of the top thereof; the first limiting head 7 is matched and connected with the first limiting groove 6, and the second limiting head 10 is matched and connected with the second limiting groove 9.

[0031] like Figure 2 As shown, before cutting the three-way catalytic converter, the first connecting arm 1 and the second connecting arm 2 are first combined together; specifically, the first matching portion 11 and the second matching portion 8 are first stacked together to ensure that the first limiting head 7 is inserted into the first limiting groove 6 and the second limiting head 10 is inserted into the second limiting groove 9, and then the first connecting arm 1 and the second connecting arm 2 are connected together through the locking member 5. The cooperation between the first limiting head 7 and the first limiting groove 6 can effectively prevent the relative displacement and rotation between the first connecting arm 1 and the second connecting arm 2. Similarly, the second limiting head 10 and the second limiting groove 9 are also used to prevent the relative displacement and rotation between the first connecting arm 1 and the second connecting arm 2. The locking member 5 can be a bolt or other clamp. The locking member 5 is used to ensure that the first connecting arm 1 and the second connecting arm 2 cannot be separated naturally, thereby ensuring the integrity of the first connecting arm 1 and the second connecting arm 2 after being connected. After the first connecting arm 1 and the second connecting arm 2 are connected together, the first welding piece 3 at the bottom of the first connecting arm 1 is welded to the exhaust pipe, and the second welding piece 4 at the bottom of the second connecting arm 2 is welded to the exhaust pipe to ensure that the three-way catalytic converter is located between the first connecting arm 1 and the second connecting arm 2. The three-way catalytic converter can then be cut off. During the cutting process, the exhaust pipes on both sides are always connected together through the auxiliary tooling, so that the three-way catalytic converter can be stably cut off. After the cutting is completed, the locking piece 5 is opened to separate the first connecting arm 1 from the second connecting arm 2, so that the exhaust pipes on both sides can be separated, and the middle three-way catalytic converter can be conveniently removed. After the three-way catalytic converter is removed, the auxiliary tooling is cut and separated from the exhaust pipe using a cutting machine for continued use. When installing the three-way catalytic converter, the auxiliary tooling is also first combined and welded to the exhaust pipes on both sides. After the exhaust pipes are connected into a whole, the three-way catalytic converter can be conveniently welded between the exhaust pipes.

[0032] In a preferred embodiment, Figure 1As shown, the first connecting arm 1 is an L-shaped structure, and the second connecting arm 2 is also an L-shaped structure. The specific structures of the first connecting arm 1 and the second connecting arm 2 are regulated to facilitate the interchangeability of the first connecting arm 1 and the second connecting arm 2. At the same time, the first connecting arm 1 of the L-shaped structure and the second connecting arm 2 of the L-shaped structure together form an inverted U-shaped structure, which can facilitate the three-way catalytic converter to be located between the first connecting arm 1 and the second connecting arm 2, and also facilitate the subsequent cutting operation.

[0033] In a preferred embodiment, if Figure 1 to Figure 2 As shown, the first matching portion 11 is provided with a first threaded hole, and the second matching portion 8 is provided with a second threaded hole; the locking member 5 includes a bolt and a nut, and the bolt passes through the first threaded hole and the second threaded hole in sequence and is connected with the nut. When the first connecting arm 1 and the second connecting arm 2 need to be locked, the bolt is passed through the first threaded hole and the second threaded hole, and then the nut and the bolt are tightened to ensure that the first matching portion 11 and the second matching portion 8 can be tightly attached together, so that the first connecting arm 1 and the second connecting arm 2 are stably combined into a whole.

[0034] In a preferred embodiment, the first connecting arm 1 and the second connecting arm 2 are both made of alloy steel. Alloy steel has high strength and is durable. For example, the first connecting arm 1 and the second connecting arm 2 in this embodiment are both made of AR400 alloy steel.

[0035] In a preferred embodiment, if Figure 1 As shown, the end of the first connection portion is provided with an inclined chamfer, and the end of the second connection portion is provided with an inclined chamfer. The inclined chamfer can increase the contact area between the first matching portion 11 and the second matching portion 8, thereby ensuring the stability of the first matching portion 11 and the second matching portion 8 after connection.

[0036] In a preferred embodiment, if Figure 1 As shown, the first welding member 3 includes a plurality of first welding connecting rods 301, the tops of the plurality of first welding connecting rods 301 are fixedly connected to the first connecting arm 1, and the bottoms of the plurality of first welding connecting rods 301 are opened outward to form a claw-shaped structure; the second welding member 4 includes a plurality of second welding connecting rods 401, the tops of the plurality of second welding connecting rods 401 are fixedly connected to the second connecting arm 2, and the bottoms of the plurality of second welding connecting rods 401 are opened outward to form a claw-shaped structure. The first welding member 3 with a claw-shaped structure enables the plurality of first welding connecting rods 301 in the welding member to contact the surface of the arc-shaped exhaust pipe, and the plurality of first welding connecting rods 301 are welded to the exhaust pipe very stably and not easily detached. Similarly, the second welding member 4 with a claw-shaped structure enables the plurality of second welding connecting rods 401 in the welding member to contact the surface of the arc-shaped exhaust pipe, and the plurality of second welding connecting rods 401 are welded to the exhaust pipe very stably and not easily detached.

[0037] In a preferred embodiment, Figure 1 As shown, the bottom of the first welding connecting rod 301 is fixed with a first connecting head 302, and the bottom of the second welding connecting rod 401 is fixed with a second connecting head 402. The first connecting head 302 is used to facilitate welding the first welding connecting rod 301 to the exhaust pipe, and the second connecting head 402 is used to facilitate welding the second welding connecting rod 401 to the exhaust pipe.

[0038] In a preferred embodiment, Figure 2 As shown, the first connector 302 is a spherical structure, and the second connector 402 is a spherical structure. The first connector 302 and the second connector 402 of the spherical structure can stably contact the exhaust pipe, thereby ensuring the stability of welding.

[0039] In a preferred embodiment, Figure 1 to Figure 2 As shown, the first welding part 3 includes three first welding connecting rods 301; the second welding part 4 includes three second welding connecting rods 401. The bottoms of the three first welding connecting rods 301 form a triangular structure, which can ensure the stability between the first welding part 3 and the exhaust pipe after being welded to the exhaust pipe. The bottoms of the three second welding connecting rods 401 form a triangular structure, which can ensure the stability between the second welding part 4 and the exhaust pipe after being welded to the exhaust pipe. Through this design, only a small number of first connecting welding rods and second welding connecting rods 401 are needed to ensure the connection stability between the first welding part 3 and the second welding part 4 and the exhaust pipe.

[0040] In a preferred embodiment, an extension section 12 is provided between the first connecting arm 1 and the second connecting arm 2, and both ends of the extension section 12 are connected to the first connecting arm 1 and the second connecting arm 2 respectively. Figure 3 As shown, an extension section 12 is provided between the first connecting arm 1 and the second connecting arm 2, and the first connecting arm 1 and the second connecting arm 2 are connected together through the extension section 12. By replacing different extension sections 12, the distance between the first connecting arm 1 and the second connecting arm 2 can be adjusted, so as to adapt to three-way catalytic converters of different specifications, thereby improving the applicability of the utility model.

[0041] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-way catalytic converter disassembly and assembly auxiliary tool for a vehicle, characterized by: It comprises a first connecting arm (1) and a second connecting arm (2) connected together via a locking member (5); The top of the first connecting arm (1) is fixedly connected to a first matching portion (11), and the top of the second connecting arm (2) is fixedly connected to a second matching portion (8); the first matching portion (11) and the second matching portion (8) are matched and connected; the first matching portion (11) and the second matching portion (8) are connected together via a locking member (5); the bottom of the first connecting arm (1) is fixedly connected to a first welding member (3), and the bottom of the second connecting arm (2) is fixedly connected to a second welding member (4); A first limiting groove (6) and a second limiting head (10) are respectively arranged on both sides of the bottom of the first matching portion (11); a first limiting head (7) and a second limiting groove (9) are respectively arranged on both sides of the top of the second matching portion (8); the first limiting head (7) is matched and connected with the first limiting groove (6), and the second limiting head (10) is matched and connected with the second limiting groove (9).

2. The vehicle three-way catalytic converter disassembly and assembly auxiliary tooling according to claim 1, characterized in that: The first connecting arm (1) is an L-shaped structure, and the second connecting arm (2) is an L-shaped structure.

3. The vehicle three-way catalytic converter disassembly and assembly auxiliary tooling according to claim 1, characterized in that: The first matching portion (11) is provided with a first threaded hole, and the second matching portion (8) is provided with a second threaded hole; the locking member (5) comprises a bolt and a nut, and the bolt passes through the first threaded hole and the second threaded hole in sequence and then is connected to the nut.

4. The vehicle three-way catalytic converter disassembly and assembly auxiliary tooling according to claim 1, characterized in that: The first connecting arm (1) and the second connecting arm (2) are both made of alloy steel.

5. The vehicle three-way catalytic converter disassembly and assembly auxiliary tooling according to claim 1, characterized in that: An end portion of the first connection portion is provided with an inclined chamfer, and an end portion of the second connection portion is provided with an inclined chamfer.

6. The vehicle three-way catalytic converter disassembly and assembly auxiliary tooling according to claim 1, characterized in that: The first welding component (3) comprises a plurality of first welding connecting rods (301), the tops of the plurality of first welding connecting rods (301) are fixedly connected to the first connecting arm (1), and the bottoms of the plurality of first welding connecting rods (301) are opened outward to form a claw-shaped structure; the second welding component (4) comprises a plurality of second welding connecting rods (401), the tops of the plurality of second welding connecting rods (401) are fixedly connected to the second connecting arm (2), and the bottoms of the plurality of second welding connecting rods (401) are opened outward to form a claw-shaped structure.

7. The vehicle three-way catalytic converter disassembly and assembly auxiliary tooling according to claim 6, characterized in that: The bottom of the first welding connecting rod (301) is fixedly connected to a first connecting head (302), and the bottom of the second welding connecting rod (401) is fixedly connected to a second connecting head (402).

8. The vehicle three-way catalytic converter disassembly and assembly auxiliary tooling according to claim 7, characterized in that: The first connector (302) is a spherical structure, and the second connector (402) is a spherical structure.

9. The vehicle three-way catalytic converter disassembly and assembly auxiliary tooling according to claim 6, characterized in that: The first welding piece (3) comprises three first welding connecting rods (301); and the second welding piece (4) comprises three second welding connecting rods (401).

10. The vehicle three-way catalytic converter disassembly and assembly auxiliary tooling according to claim 1, characterized in that: An extension section (12) is provided between the first connecting arm (1) and the second connecting arm (2), and two ends of the extension section (12) are respectively connected to the first connecting arm (1) and the second connecting arm (2).

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