Exhaust tail pipe mounting structure and agricultural machine

Abstract

The utility model relates to the technical field of exhaust of agricultural machinery, in particular to an exhaust tail pipe installation structure and agricultural machinery, which comprises an exhaust tail pipe, a filling cavity is arranged in the pipe wall of the exhaust tail pipe, a heat insulation layer is filled in the filling cavity, one end of the exhaust tail pipe is fixedly provided with a fastener, and the other end of the exhaust tail pipe is fixedly provided with a sealing cover. The fastener is detachably and fixedly connected with the output end of the aftertreatment device, and the middle of the exhaust tail pipe is installed on an engine and accessory assembly through a fixing support. The exhaust tail pipe has the advantages that the filling cavity is formed in the exhaust tail pipe, the heat insulation layer is filled in the filling cavity, heat of tail gas passing through the exhaust tail pipe is isolated, and the influence of high temperature of the tail gas on peripheral parts is avoided; meanwhile, the middle of the exhaust tail pipe is supported through the fixing support, and the installation strength of the exhaust tail pipe is ensured.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery exhaust technology, and in particular to an exhaust tailpipe installation structure and agricultural machinery. Background Technology

[0002] Non-road agricultural machinery, especially tractors, involves a wide range of implements and operates under complex and harsh conditions. When tractors perform sweeping, baling, and rotary tilling, the surrounding environment is harsh, with dust, lint, and weeds flying everywhere. Currently, most tractors have their exhaust tailpipes partially exposed on the outside, while others are inside the engine hood. They are typically insulated with heat-insulating cotton, usually high-silica cloth (or silicone cloth, etc.). However, over time, this insulation will age, become easily damaged, and reduce its insulation effectiveness. Furthermore, some exhaust tailpipes are located around the engine, which contains numerous rubber parts, oil lines, wiring harnesses, and other electrical components, all of which are affected by the high temperatures of the exhaust tailpipe. If the insulation is aged or damaged, it can create a risk of fire from weeds entering the exhaust tailpipe, affecting the overall operation of the machine. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an exhaust tailpipe installation structure and agricultural machinery, which reduces the temperature of the outer wall of the exhaust tailpipe and improves reliability.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: an exhaust tailpipe installation structure, including an exhaust tailpipe, the exhaust tailpipe having a filling cavity inside its pipe wall, the filling cavity being filled with a heat insulation layer, a fastener being fixedly provided at one end of the exhaust tailpipe, the fastener being detachably and fixedly connected to the output end of the aftertreatment device, and the middle part of the exhaust tailpipe being mounted on the engine and accessory assembly via a fixed bracket.

[0005] The beneficial effects of this utility model are as follows: By setting a filling cavity inside the exhaust tailpipe and filling the filling cavity with a heat insulation layer, the heat of the exhaust gas passing through the exhaust tailpipe is isolated, thus avoiding the impact of the high temperature of the exhaust gas on surrounding components; at the same time, the middle part of the exhaust tailpipe is supported by a fixed bracket to ensure the installation strength of the exhaust tailpipe.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the exhaust tailpipe includes a heat-insulating protective shell and an exhaust pipe disposed inside the heat-insulating protective shell, wherein the inner wall of the heat-insulating protective shell and the outer wall of the exhaust pipe are spaced apart to form the filling cavity; the fastener is fixedly connected to the ends of the exhaust pipe and the heat-insulating protective shell.

[0008] The beneficial effects of adopting the above-mentioned further solution are: the exhaust tailpipe adopts an exhaust pipe, a heat insulation layer and a heat insulation protective shell arranged sequentially from the inside to the outside. On the one hand, it facilitates the installation of the heat insulation layer, and on the other hand, it ensures the strength of the exhaust tailpipe.

[0009] Furthermore, a heat insulation pipe is fitted onto the middle part of the exhaust pipe. The heat insulation pipe is located between the heat insulation protective shell and the exhaust pipe. A plurality of pads are evenly arranged between the inner wall of the heat insulation pipe and the outer wall of the exhaust pipe. The pads are fixedly connected to the heat insulation pipe and the exhaust pipe respectively. One end of the fixing bracket passes through the heat insulation protective shell and is fixedly connected to the outer wall of the heat insulation pipe.

[0010] The beneficial effects of adopting the above-mentioned further solution are as follows: a heat insulation pipe is installed at the connection between the fixed bracket and the exhaust tailpipe. The heat insulation pipe is set in the filling cavity and fixedly connected to the fixed bracket. At the same time, the heat insulation pipe is fixedly connected to the exhaust pipe through a pad. The heat insulation pipe is wrapped by the heat insulation layer, which reduces the temperature at the fixed bracket. The surface temperature of the fixed bracket can be reduced to the temperature requirement for use, which satisfies the support of the components and at the same time satisfies the requirement of reducing the surface temperature.

[0011] Furthermore, a reinforcing plate is provided between the end of the fixed bracket and the outer wall of the heat insulation pipe, the end of the fixed bracket is fixedly connected to the reinforcing plate, and the reinforcing plate is fixedly connected to the outer wall of the heat insulation pipe.

[0012] The beneficial effect of adopting the above-mentioned further solution is that the setting of the reinforcing plate can improve the connection strength and reliability between the fixed bracket and the heat insulation pipe.

[0013] Furthermore, the heat-insulating protective shell is made of metal.

[0014] The beneficial effects of adopting the above-mentioned further solutions are: the heat-insulating protective shell is made of metal, which has sufficient strength to avoid damage caused by certain collisions.

[0015] Furthermore, the fastener includes a connecting flange, and the output end of the post-processing device is fixedly provided with a mounting flange. The connecting flange and the mounting flange are fixedly connected by bolts.

[0016] The advantages of adopting the above-mentioned further solution are: the connecting flange and the mounting flange are fixedly connected by bolts, making installation and disassembly convenient.

[0017] Furthermore, the fastener includes a connecting flange, and the output end of the post-processing device is fixedly provided with a mounting flange. The connecting flange and the mounting flange are fixedly connected by a V-shaped ring clamp.

[0018] The beneficial effect of adopting the above-mentioned further solution is that the connecting flange and the mounting flange are fixedly connected by V-shaped ring clamps, ensuring the stability of the connection between the two.

[0019] Furthermore, a sealing gasket is provided between the connecting flange and the mounting flange.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the setting of the sealing gasket can ensure the sealing between the connecting flange and the mounting flange, and prevent exhaust gas from being discharged from the connection between the two.

[0021] Furthermore, the sealing gasket is a metal sealing gasket.

[0022] The beneficial effects of adopting the above-mentioned further solutions are: using metal gaskets reduces damage caused by high temperatures and increases service life.

[0023] This utility model solves the above-mentioned technical problems and also provides an agricultural machine, including the exhaust tailpipe mounting structure described above.

[0024] The beneficial effects of adopting the above solution are: by setting a filling cavity in the exhaust tailpipe and filling the filling cavity with a heat insulation layer, the heat of the exhaust gas passing through the exhaust tailpipe is isolated, thus avoiding the impact of the high temperature of the exhaust gas on surrounding components; at the same time, the middle part of the exhaust tailpipe is supported by a fixed bracket to ensure the installation strength of the exhaust tailpipe. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0026] Figure 2 This is a schematic diagram of the exhaust tailpipe and fixing bracket in Embodiment 1 of this utility model;

[0027] Figure 3 This is an enlarged view of the connection between the exhaust tailpipe and the aftertreatment device in Embodiment 1 of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0029] Figure 5 This is a schematic diagram of the exhaust tailpipe and fixing bracket in Embodiment 2 of this utility model;

[0030] Figure 6 This is an enlarged view of the connection between the exhaust tailpipe and the aftertreatment device in Embodiment 2 of this utility model;

[0031] Figure 7 for Figure 1 and Figure 4 Sectional view of plane AA in the middle;

[0032] Figure 8 This is a structural schematic diagram of Embodiment 3 of the present invention;

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1. Exhaust tailpipe; 101. Exhaust pipe; 102. Heat insulation layer; 103. Heat insulation protective shell; 104. Reinforcing plate; 105. Gasket; 106. Heat insulation pipe; 2. Sealing gasket; 3. Fasteners; 301. Connecting flange; 302. Mounting flange; 303. Bolt; 304. V-ring; 4. Aftertreatment device; 5. Engine and accessory assembly; 6. Mounting bracket. Detailed Implementation

[0035] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0036] Example 1

[0037] like Figure 1 , Figure 2 , Figure 3 As shown, this embodiment includes an exhaust tailpipe 1. The exhaust tailpipe 1 has a filling cavity inside its pipe wall. The filling cavity is filled with a heat insulation layer 102. One end of the exhaust tailpipe 1 is fixedly provided with a fastener 3. The fastener 3 is detachably and fixedly connected to the output end of the aftertreatment device 4 (or muffler). The middle part of the exhaust tailpipe 1 is mounted on the engine and accessory assembly 5 through a fixing bracket 6.

[0038] The aftertreatment device 4 (or muffler) is a key component for treating engine exhaust gases. In this embodiment, it can be arranged on the upper part of the engine.

[0039] In this embodiment, the exhaust tailpipe 1 includes a heat-insulating protective shell 103 and an exhaust pipe 101 disposed inside the heat-insulating protective shell 103. The heat-insulating protective shell 103 is made of metal, which has sufficient strength to prevent damage caused by certain collisions. The inner wall of the heat-insulating protective shell 103 and the outer wall of the exhaust pipe 101 are spaced apart to form the filling cavity. The fastener 3 is fixedly connected to the ends of the exhaust pipe 101 and the heat-insulating protective shell 103. The exhaust tailpipe 1 consists of an exhaust pipe 101, a heat insulation layer 102, and a heat-insulating protective shell 103 arranged sequentially from the inside to the outside. This facilitates the installation of the heat insulation layer 102 and ensures the strength of the exhaust tailpipe 1.

[0040] The insulation layer 102 has good insulation properties, low thermal conductivity, strong heat resistance, good corrosion resistance, and high mechanical strength. It can withstand temperatures of 600℃-700℃ in non-road agricultural machinery, exhibiting excellent thermal insulation performance. Common materials include fiberglass tape, fiberglass wool, ceramic fiber wool, stepless fiber felt, and high-silica needle-punched felt. Different materials and thicknesses will result in different insulation temperatures. The selected temperature resistance is primarily based on the overall operating temperature requirements of the machine; materials meeting the requirements within the machine's operating temperature range are sufficient. Typically, the machine requires a temperature range of -40℃ to 700℃.

[0041] like Figure 7 As shown, a heat insulation pipe 106 is sleeved on the middle part of the exhaust pipe 101. The heat insulation pipe 106 is located between the heat insulation protective shell 103 and the exhaust pipe 101. A plurality of pads 105 are evenly arranged between the inner wall of the heat insulation pipe 106 and the outer wall of the exhaust pipe 101. The pads 105 are fixedly connected to the heat insulation pipe 106 and the exhaust pipe 101 respectively. Preferably, the fixing can be achieved by welding. One end of the fixing bracket 6 passes through the heat insulation protective shell 103 and is fixed to the outer wall of the heat insulation pipe 106. For connection, welding is preferred for fixation. A heat insulation pipe 106 is installed at the connection between the fixed bracket 6 and the exhaust tailpipe 1. The heat insulation pipe 106 is installed in the filling cavity and is fixedly connected to the fixed bracket 6. At the same time, the heat insulation pipe 106 is fixedly connected to the exhaust pipe 101 through the pad 105. The heat insulation pipe 106 is wrapped by the heat insulation layer 102, which reduces the temperature at the fixed bracket 6. The surface temperature of the fixed bracket 6 can be reduced to the temperature requirement for use, which satisfies the support of the components and at the same time satisfies the requirement of reducing the surface temperature.

[0042] A reinforcing plate 104 is provided between the end of the fixed bracket 6 and the outer wall of the heat insulation pipe 106. The end of the fixed bracket 6 is fixedly connected to the reinforcing plate 104, and the reinforcing plate 104 is fixedly connected to the outer wall of the heat insulation pipe 106. The setting of the reinforcing plate 104 can improve the connection strength and reliability between the fixed bracket 6 and the heat insulation pipe 106.

[0043] In this embodiment, when the thickness of the heat insulation pipe 106 is relatively thin, a reinforcing plate 104 can be added to improve strength and reliability. When the thickness of the heat insulation pipe 106 is relatively large, the reinforcing plate 104 may not be provided.

[0044] In this embodiment, the fastener 3 includes a connecting flange 301, and the output end of the post-processing device 4 is fixedly provided with a mounting flange 302. The connecting flange 301 and the mounting flange 302 are fixedly connected by bolts 303, which makes installation and disassembly convenient.

[0045] Furthermore, a sealing gasket 2 is provided between the connecting flange 301 and the mounting flange 302. The sealing gasket 2 is a metal sealing gasket. The setting of the sealing gasket 2 can ensure the sealing between the connecting flange 301 and the mounting flange 302, and prevent exhaust gas from being discharged from the connection between the two. The sealing gasket 2 is a metal sealing gasket, which reduces damage caused by high temperature and improves service life.

[0046] Example 2

[0047] like Figure 4 , Figure 5 , Figure 6 As shown, this embodiment includes an exhaust tailpipe 1. The exhaust tailpipe 1 has a filling cavity inside its pipe wall. The filling cavity is filled with a heat insulation layer 102. One end of the exhaust tailpipe 1 is fixedly provided with a fastener 3. The fastener 3 is detachably and fixedly connected to the output end of the aftertreatment device 4 (or muffler). The middle part of the exhaust tailpipe 1 is mounted on the engine and accessory assembly 5 through a fixing bracket 6.

[0048] The aftertreatment device 4 (or muffler) is a key component for treating engine exhaust gases. In this embodiment, it can be arranged on the upper part of the engine.

[0049] In this embodiment, the exhaust tailpipe 1 includes a heat-insulating protective shell 103 and an exhaust pipe 101 disposed inside the heat-insulating protective shell 103. The heat-insulating protective shell 103 is made of metal, which has sufficient strength to prevent damage caused by certain collisions. The inner wall of the heat-insulating protective shell 103 and the outer wall of the exhaust pipe 101 are spaced apart to form the filling cavity. The fastener 3 is fixedly connected to the ends of the exhaust pipe 101 and the heat-insulating protective shell 103. The exhaust tailpipe 1 consists of an exhaust pipe 101, a heat insulation layer 102, and a heat-insulating protective shell 103 arranged sequentially from the inside to the outside. This facilitates the installation of the heat insulation layer 102 and ensures the strength of the exhaust tailpipe 1.

[0050] The insulation layer 102 has good insulation properties, low thermal conductivity, strong heat resistance, good corrosion resistance, and high mechanical strength. It can withstand temperatures of 600℃-700℃ in non-road agricultural machinery, exhibiting excellent thermal insulation performance. Common materials include fiberglass tape, fiberglass wool, ceramic fiber wool, stepless fiber felt, and high-silica needle-punched felt. Different materials and thicknesses will result in different insulation temperatures. The selected temperature resistance is primarily based on the overall operating temperature requirements of the machine; materials meeting the requirements within the machine's operating temperature range are sufficient. Typically, the machine requires a temperature range of -40℃ to 700℃.

[0051] like Figure 7As shown, a heat insulation pipe 106 is sleeved on the middle part of the exhaust pipe 101. The heat insulation pipe 106 is located between the heat insulation protective shell 103 and the exhaust pipe 101. A plurality of pads 105 are evenly arranged between the inner wall of the heat insulation pipe 106 and the outer wall of the exhaust pipe 101. The pads 105 are fixedly connected to the heat insulation pipe 106 and the exhaust pipe 101 respectively. Preferably, the fixing can be achieved by welding. One end of the fixing bracket 6 passes through the heat insulation protective shell 103 and is fixed to the outer wall of the heat insulation pipe 106. For connection, welding is preferred for fixation. A heat insulation pipe 106 is installed at the connection between the fixed bracket 6 and the exhaust tailpipe 1. The heat insulation pipe 106 is installed in the filling cavity and is fixedly connected to the fixed bracket 6. At the same time, the heat insulation pipe 106 is fixedly connected to the exhaust pipe 101 through the pad 105. The heat insulation pipe 106 is wrapped by the heat insulation layer 102, which reduces the temperature at the fixed bracket 6. The surface temperature of the fixed bracket 6 can be reduced to the temperature requirement for use, which satisfies the support of the components and at the same time satisfies the requirement of reducing the surface temperature.

[0052] A reinforcing plate 104 is provided between the end of the fixed bracket 6 and the outer wall of the heat insulation pipe 106. The end of the fixed bracket 6 is fixedly connected to the reinforcing plate 104, and the reinforcing plate 104 is fixedly connected to the outer wall of the heat insulation pipe 106. The setting of the reinforcing plate 104 can improve the connection strength and reliability between the fixed bracket 6 and the heat insulation pipe 106.

[0053] In this embodiment, when the thickness of the heat insulation pipe 106 is relatively thin, a reinforcing plate 104 can be added to improve strength and reliability. When the thickness of the heat insulation pipe 106 is relatively large, the reinforcing plate 104 may not be provided.

[0054] In this embodiment, the fastener 3 includes a connecting flange 301, and the output end of the post-processing device 4 is fixedly provided with a mounting flange 302. The connecting flange 301 and the mounting flange 302 are fixedly connected by a V-shaped ring clamp 304. The connecting flange 301 and the mounting flange 302 are fixedly connected by a V-shaped ring clamp 304 to ensure the stability of the connection between the two.

[0055] Furthermore, a sealing gasket 2 is provided between the connecting flange 301 and the mounting flange 302. The sealing gasket 2 is a metal sealing gasket. The setting of the sealing gasket 2 can ensure the sealing between the connecting flange 301 and the mounting flange 302, and prevent exhaust gas from being discharged from the connection between the two. The sealing gasket 2 is a metal sealing gasket, which reduces damage caused by high temperature and improves service life.

[0056] Example 3

[0057] like Figure 8As shown, the difference between this embodiment and Embodiment 1 and Embodiment 2 is that the aftertreatment device 4 (or muffler) is arranged on the side of the engine.

[0058] Example 4

[0059] This embodiment discloses an agricultural machine, including the exhaust tailpipe 1 mounting structure described in the above embodiment.

[0060] When the engine is running, the exhaust gas passes through the aftertreatment device 4 (or muffler) and is discharged through the exhaust tailpipe 1. Because the exhaust tailpipe 1 uses a heat insulation layer 102, the high-temperature exhaust gas is insulated. The heat-insulating protective shell 103 is the outermost layer of the exhaust tailpipe 1, and its surface temperature is insulated, meeting usage requirements and preventing the risk of fire caused by contact with foreign objects. Furthermore, the fixing bracket 6 is connected (or welded) to the heat insulation pipe 106 via a reinforcing plate 104 (this may be omitted if the heat insulation pipe 106 material is thick). The pad 105 is first connected (or welded) to the outer surface of the exhaust pipe 101, and then the heat insulation pipe 106 is connected (or welded) to the pad 105. With the addition of the heat insulation layer 102 between the heat insulation pipe 106 and the exhaust pipe 101, the surface temperature of the fixing bracket 6 can be reduced to the required operating temperature, satisfying both component support and surface temperature reduction.

[0061] This utility model provides a filling cavity inside the exhaust tailpipe 1, and fills the filling cavity with a heat insulation layer 102 to isolate the heat of the exhaust gas passing through the exhaust tailpipe 1, thus avoiding the impact of the high temperature of the exhaust gas on surrounding components; at the same time, the middle part of the exhaust tailpipe 1 is supported by the fixed bracket 6 to ensure the installation strength of the exhaust tailpipe 1.

[0062] In the description of this utility model, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "circumferential", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0063] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An exhaust tailpipe mounting structure characterized by comprising: The exhaust tail pipe (1) is internally provided with a filling cavity filled with a heat insulation layer (102), one end of the exhaust tail pipe (1) is fixedly provided with a fastener (3), the fastener (3) is detachably fixedly connected with an output end of an aftertreatment device (4), and the middle part of the exhaust tail pipe (1) is installed on an engine and accessory assembly (5) through a fixing support (6).

2. The exhaust tailpipe mounting structure according to claim 1, characterized by The exhaust tail pipe (1) comprises a heat insulation protective shell (103) and an exhaust pipe (101) arranged inside the heat insulation protective shell (103), the inner wall of the heat insulation protective shell (103) and the outer wall of the exhaust pipe (101) are arranged at intervals to form the filling cavity; and the fastener (3) is fixedly connected with the end part of the exhaust pipe (101) and the heat insulation protective shell (103).

3. The exhaust tailpipe mounting structure according to claim 2, characterized by A heat insulation pipe (106) is sleeved on the middle part of the exhaust pipe (101), the heat insulation pipe (106) is arranged between the heat insulation protective shell (103) and the exhaust pipe (101), a plurality of cushion blocks (105) are uniformly arranged between the inner wall of the heat insulation pipe (106) and the outer wall of the exhaust pipe (101), the cushion blocks (105) are fixedly connected with the heat insulation pipe (106) and the exhaust pipe (101) respectively, and one end of the fixing support (6) is fixedly connected with the outer wall of the heat insulation pipe (106) through the heat insulation protective shell (103).

4. The exhaust tailpipe mounting structure according to claim 3, characterized by A reinforcing plate (104) is arranged between the end part of the fixing support (6) and the outer wall of the heat insulation pipe (106), the end part of the fixing support (6) is fixedly connected with the reinforcing plate (104), and the reinforcing plate (104) is fixedly connected with the outer wall of the heat insulation pipe (106).

5. The exhaust tailpipe mounting structure according to claim 2, characterized by The heat insulation protective shell (103) is made of metal.

6. The exhaust tailpipe mounting structure according to claim 1, characterized by The fastener (3) comprises a coupling flange (301), the output end of the aftertreatment device (4) is fixedly provided with a mounting flange (302), and the coupling flange (301) and the mounting flange (302) are fixedly connected through a bolt (303).

7. The exhaust tailpipe mounting structure according to claim 1, characterized by The fastener (3) comprises a coupling flange (301), the output end of the aftertreatment device (4) is fixedly provided with a mounting flange (302), and the coupling flange (301) and the mounting flange (302) are fixedly connected through a V-shaped ring clamp (304).

8. An exhaust tailpipe mounting structure according to claim 6 or 7, characterized in that A sealing gasket (2) is arranged between the coupling flange (301) and the mounting flange (302).

9. The exhaust tailpipe mounting structure according to claim 8, characterized by The sealing gasket (2) is a metal sealing gasket (2).

10. An agricultural machine characterized by comprising: The exhaust tail pipe installation structure comprises the exhaust tail pipe installation structure according to any one of claims 1 to 9.

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