Exhaust three-way pipe structure for sealing and noise reduction of wide-body dumper

Abstract

The utility model relates to an exhaust three-way pipe structure for sealing and noise reduction of a wide-body dumper. The exhaust three-way pipe structure comprises a tail gas flow dividing assembly, a tail gas inlet pipe connected with the tail gas flow dividing assembly, a tail gas exhaust pipe, a tail gas heating pipe and a cargo compartment connecting assembly. The tail gas flow dividing assembly comprises a flow dividing box body and a sealing valve plate arranged in the flow dividing box body, the cargo compartment connecting assembly comprises a first matching piece, a second matching piece and a compression spring arranged outside the first matching piece in a sleeving mode, the first matching piece comprises a sleeve and a matching part, the matching part is in a circular ring shape, and the sealing valve plate is arranged on the sealing valve plate. The second matching part comprises a connecting pipe and a clamping part, the clamping part is in a horn mouth shape, and a conical curved surface in the clamping part is matched with the annular matching part. According to the exhaust three-way pipe structure, the exhaust tail gas leakage amount can be reduced, the sealing performance is improved, meanwhile, noise reduction is facilitated, and the double effects of sealing and noise reduction are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wide body dump truck part technical field, concretely relates to a kind of exhaust tee pipe structures for the sealing noise reduction of wide body dump truck. BACKGROUND

[0002] In today's mining, wide body dump truck is used to transport earthwork materials. When working in low temperature environment, to ensure that the loaded earthwork is not frozen or iced, the engine exhaust heat is introduced into the cargo compartment, and the heat energy contained in the exhaust gas is used to heat the cargo compartment, to maintain the temperature in the cargo compartment and prevent the earthwork from freezing, to ensure the normal loading and unloading of materials.

[0003] In the wide body dump truck exhaust gas heating cargo compartment system, the tee joint structure is a key connecting component between the engine exhaust and the cargo compartment. However, the existing tee joint structure is complex in design and consists of multiple components that cooperate with each other. During the lifting of the cargo compartment, the vibration and shaking of the vehicle and the relative displacement between the components can cause the connection part of the tee joint structure to deviate, resulting in poor sealing at the joint surface between the tee structure and the cargo compartment. This not only wastes energy but also produces a lot of noise. SUMMARY

[0004] Based on the technical problems existing in the prior art, the utility model provides an exhaust tee pipe structure for the sealing noise reduction of wide body dump truck, which can reduce the exhaust gas leakage, improve the sealing performance, and also help to reduce the noise, achieving the dual effect of sealing and noise reduction.

[0005] The utility model solves the technical problems by adopting the following technical scheme: an exhaust tee pipe structure for the sealing noise reduction of wide body dump truck is provided, which includes an exhaust gas shunting assembly, an exhaust gas inlet pipe connected to the exhaust gas shunting assembly, an exhaust gas outlet pipe, an exhaust gas heating pipe, and a cargo compartment connecting assembly. The exhaust gas shunting assembly includes a shunting box body and a sealing valve plate arranged inside the shunting box body. The cargo compartment connecting assembly includes a first fitting, a second fitting, and a compression spring sleeved outside the first fitting. The first fitting includes a sleeve and a fitting part, and the fitting part is in the form of a ring. The second fitting includes a connecting pipe and a clamping part, and the clamping part is in the form of a bell mouth. The conical surface inside the clamping part cooperates with the ring-shaped fitting part.

[0006] Further, the exhaust gas shunting assembly further includes a rotating shaft connected to the sealing valve plate and a gear adjustment member connected to the end of the rotating shaft.

[0007] Further, the shunting box body is provided with a containing cavity, and the sealing valve plate is installed inside the shunting box body 11. The sealing valve plate is placed inside the shunting box body and rotates through the rotating shaft to block the ports of the exhaust gas outlet pipe or the exhaust gas heating pipe.

[0008] Further, the gear adjusting member comprises an adjusting rod, a positioning lock and a fixing bolt.

[0009] Further, the positioning lock comprises a first lock, a second lock and a third lock, which are arranged in an arc shape with one end of the rotating shaft as the center, and the other end of the adjusting rod is fixedly connected with the first lock, the second lock or the third lock through the fixing bolt.

[0010] Further, the tail gas inlet pipe is installed on the side wall of the distribution box body, the tail gas exhaust pipe is installed on the bottom of the distribution box body, and the tail gas heating pipe is installed on the top of the distribution box body.

[0011] Further, the inner diameter of the sleeve is matched with the outer diameter of the tail gas heating pipe, the matching part is located at the top of the sleeve, a groove is formed in the inner side of the annular ring of the matching part, and a compression spring is arranged in the groove.

[0012] Further, one end of the compression spring is clamped on the distribution box body, and the other end of the compression spring is clamped in the groove of the matching part

[0013] Further, the tail gas exhaust pipe is installed on the bottom of the distribution box body, a circular mounting port is formed on the bottom of the distribution box body, and the tail gas exhaust pipe is mounted in the mounting port.

[0014] Further, the inner diameter of the tail gas exhaust pipe is smaller than the inner diameter of the connecting pipe of the second matching member.

[0015] The utility model discloses a beneficial effect is: the utility model provides a kind of exhaust tee pipe structure for sealing and reducing noise of wide-body dump truck, it includes tail gas shunt component, with the tail gas shunt component Connection's tail gas intake pipe, tail gas exhaust pipe, tail gas heating pipe and cargo compartment connecting component, the tail gas shunt component includes shunt box and the sealing valve piece being arranged in the shunt box interior, the cargo compartment connecting component includes first fitting piece, second fitting piece and the compression spring being set in the first fitting piece outside, the first fitting piece includes sleeve and cooperation part, the cooperation part is circular, the second fitting piece includes connecting pipe and clamping portion, the clamping portion is trumpet mouth shape, the conical surface in the clamping portion interior is matched with circular cooperation part, and is clamped by compression spring, improve sealing property, while compression spring can effectively buffer vehicle driving vibration impact, reduce component damage, prolong service life;When tail gas is through the tail gas intake pipe and the connecting pipe of the second fitting piece, because inner diameter increases, according to venturi effect, flow rate reduces, pressure increases, suction or pressure difference produced makes the first fitting piece and the second fitting piece connection more closely, reduce exhaust tail gas leakage amount, improve sealing performance, while also help to reduce noise, realize the double effect of sealing and reducing noise. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be further described below in connection with the drawings and examples.

[0017] Figure 1 It is the structure schematic diagram of the exhaust tee pipe structure for sealing and reducing noise of wide-body dump truck provided by the utility model;

[0018] Figure 2 It is the sectional view of the exhaust tee pipe structure for sealing and reducing noise of wide-body dump truck provided by the utility model;

[0019] Figure 3 It is the cargo compartment connecting component partial explosion drawing of the exhaust tee pipe structure for sealing and reducing noise of wide-body dump truck provided by the utility model.

[0020] The names of parts in the drawing and their numbers are respectively:

[0021] Exhaust tee pipe structure 100;

[0022] Tail gas shunt component 1, shunt box 11, sealing valve piece 12, rotating shaft 13, gear adjusting part 14, adjusting rod 141, positioning lock catch 142, first lock catch 1421, second lock catch 1422, third lock catch 1423, fixed bolt 143;

[0023] Tail gas intake pipe 2;

[0024] Tail gas exhaust pipe 3, fastener 31;

[0025] Tail gas heating pipe 4;

[0026] Cargo box connecting assembly 5, first mating part 51, sleeve 511, mating part 512, second mating part 52, connecting pipe 521, locking part 522, compression spring 53, cargo box connecting part 54. Detailed Implementation

[0027] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the present utility model, and therefore only shows the components relevant to the present utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Example 1

[0029] like Figure 1 As shown, this embodiment provides an exhaust tee structure 100 for sealing and noise reduction of a wide-body dump truck, including an exhaust gas splitting assembly 1, an exhaust gas intake pipe 2 connected to the exhaust gas splitting assembly 1, an exhaust gas exhaust pipe 3, an exhaust gas heating pipe 4, and a cargo box connecting assembly 5.

[0030] like Figure 2As shown, in some embodiments, the exhaust gas shunting assembly 1 comprises a shunting box 11, a sealing valve plate 12 arranged inside the shunting box 11, a rotating shaft 13 connected with the sealing valve plate 12, and a gear adjusting member 14 connected with the end of the rotating shaft 13. The shunting box 11 has a rectangular structure, and a containing cavity is arranged inside the shunting box 11 for mounting the sealing valve plate 12 and the rotating shaft 13; the shunting box 11 is used to provide the mounting space of the sealing valve plate 12 and the rotating shaft 13 and establish the exhaust gas shunting passage. The sealing valve plate 12 is mounted inside the shunting box 11, and the sealing valve plate 12 is used to be placed inside the shunting box to be rotated by the rotating shaft 13 to block the ports of the exhaust gas exhaust pipe 3 or the exhaust gas heating pipe 4; by rotating the sealing valve plate 12, the opening or closing of the exhaust gas to the exhaust gas exhaust pipe 3 or the exhaust gas heating pipe 4 is realized, thereby realizing the control of the shunting ratio and flow direction of the exhaust gas. The rotating shaft 13 has a cylindrical shape, and the rotating shaft 13 is rotationally fixed on the inner wall of the shunting box 11; the sealing valve plate 12 is fixedly connected with the rotating shaft 13; the other end of the rotating shaft 13 is connected with the gear adjusting member 14; the rotating shaft 13 serves as a transmission component to transmit the rotating action of the gear adjusting member 14 to the sealing valve plate 12, so that the sealing valve plate 12 can rotate around the axis of the rotating shaft 13. The gear adjusting member 14 comprises an adjusting rod 141, a positioning lock catch 142, and a fixing bolt 143. One end of the adjusting rod 141 is connected with the rotating shaft 13; the positioning lock catch 142 comprises a first lock catch 1421, a second lock catch 1422, and a third lock catch 1423, which are arranged in an arc shape with the one end of the rotating shaft 13 as the center. The other end of the adjusting rod 141 can be fixedly connected with the first lock catch 1421, the second lock catch 1422, or the third lock catch 1423 through the fixing bolt 143. When the adjusting rod 141 is fixed with the first lock catch 1421 through the fixing bolt 143, at this time the rotating shaft 13 drives the sealing valve plate 12 to close the port of the exhaust gas heating pipe 4; the exhaust gas with heat generated by the engine enters the shunting box 11 through the exhaust gas inlet pipe 2 and is then discharged through the exhaust gas exhaust pipe 3. When the adjusting rod 141 is fixed with the third lock catch 1423 through the fixing bolt 143, at this time the rotating shaft 13 drives the sealing valve plate 12 to close the port of the exhaust gas exhaust pipe 3; the exhaust gas with heat generated by the engine enters the shunting box 11 through the exhaust gas inlet pipe 2 and is then heated in the cargo compartment through the exhaust gas heating pipe 4. When the adjusting rod 141 is fixed with the second lock catch 1422 through the fixing bolt 143, at this time the rotating shaft 13 drives the sealing valve plate 12 to be located at the central position of the ports of the exhaust gas heating pipe 4 and the exhaust gas exhaust pipe 3; the exhaust gas with heat generated by the engine enters the shunting box 11 through the exhaust gas inlet pipe 2 and enters the cargo compartment for heating through the exhaust gas heating pipe 4 and is discharged through the exhaust gas exhaust pipe 3 according to a certain shunting ratio.

[0031] In some embodiments, the exhaust gas inlet pipe 2 is installed on the side wall of the distribution box 11. Further, a circular mounting hole is formed on the side wall of the distribution box 11, which is suitable for installing the exhaust gas inlet pipe 2. The exhaust gas inlet pipe 2 is installed through the mounting hole on the side wall of the distribution box 11, and the exhaust gas with heat generated by the vehicle engine is introduced into the distribution box 11 through the exhaust gas inlet pipe 2.

[0032] In some embodiments, the exhaust gas outlet pipe 3 is installed on the bottom of the distribution box 11. A circular mounting hole is formed on the bottom of the distribution box 11, which is suitable for installing the exhaust gas outlet pipe 3. One end of the exhaust gas outlet pipe 3 extends into the interior of the distribution box 11, and the end of the exhaust gas outlet pipe 3 is beveled, which facilitates sealing by the sealing valve 12. The other end of the exhaust gas outlet pipe 3 is curved, which is used to guide the exhaust gas to be discharged from the distribution box 11, so that the exhaust gas can be discharged or transported to the subsequent treatment equipment according to a specific path. A fastener 31 is also provided on the exhaust gas outlet pipe 3, which is in the form of a clamp, and is used to fix the exhaust gas outlet pipe 3 at a predetermined position of the vehicle, so as to prevent the exhaust gas outlet pipe from loosening, falling off or leaking due to vibration, pressure and other factors during the exhaust gas discharge process, and to ensure that the exhaust gas outlet pipe 3 is fixed in position during long-term use, thereby maintaining the normal operating state of the system.

[0033] In some embodiments, the exhaust gas heating pipe 4 is installed on the top of the distribution box 11. A circular mounting hole is formed on the top of the distribution box 11, which is suitable for installing the exhaust gas heating pipe 4. One end of the exhaust gas heating pipe 4 extends into the interior of the distribution box 11, and the end of the exhaust gas heating pipe 4 is beveled, which facilitates sealing by the sealing valve 12. When the end of the exhaust gas heating pipe 4 is opened, the exhaust gas with heat generated by the engine enters the distribution box 11 through the exhaust gas inlet pipe 2 and then enters the cargo compartment through the exhaust gas heating pipe 4 for heating.

[0034] As Figure 3As shown, in some embodiments, the cargo compartment connecting assembly 5 includes a first fitting part 51, a second fitting part 52, a compression spring 53 sleeved outside the first fitting part 51, and a cargo compartment connecting part 54 arranged on the second fitting part 52. The first fitting part 51 includes a sleeve 511 and a fitting part 512, the sleeve 511 is sleeved outside the exhaust heating pipe 4, and the inner diameter of the sleeve 511 matches the outer diameter of the exhaust heating pipe 4. The fitting part 512 is annular, and a groove is formed on the inner side of the annular fitting part 512, and the compression spring 53 is arranged in the groove. One end of the compression spring 53 is clamped on the flow distribution box 11, and the other end of the compression spring 53 is clamped in the groove of the fitting part 512. The second fitting part 52 includes a connecting pipe 521 and a clamping part 522, the connecting pipe 521 is located above the exhaust heating pipe 4, and the exhaust gas passing through the connecting pipe 521 enters the cargo compartment for heating. The clamping part 522 is in the shape of a bell mouth, and the conical surface inside the clamping part 522 matches the annular fitting part 512. The cargo compartment connecting part 54 is arranged on the top of the second fitting part 52, and an opening is formed on the cargo compartment connecting part 54 to match the connecting pipe 521, which is suitable for introducing exhaust gas into the cargo compartment. The cargo compartment connecting part 54 is provided with a mounting hole for fixing the cargo compartment by bolts or other connecting parts. The sleeve 511 of the first fitting part 51 matches the diameter of the exhaust heating pipe 4 to achieve tight fitting; the conical surface inside the clamping part 522 of the second fitting part 52 matches the annular fitting part 512 of the first fitting part 51, and is clamped by the compression spring 53. The compression spring 53 sleeved outside the first fitting part 51 has one end clamped on the flow distribution box 11 and the other end clamped in the groove of the fitting part 512, which can effectively buffer the vibration and impact during vehicle driving, reduce damage to the connecting assembly and related parts, prolong the service life, and ensure stable operation of the system.

[0035] Further, when the sealing valve plate 12 closes the port of the exhaust gas discharge pipe 3, the exhaust gas generated by the engine with heat passes through the exhaust gas inlet pipe 2 and the connecting pipe 521 of the second fitting part 52, and then enters the flow distribution box 11 and then passes through the exhaust heating pipe 4 to enter the cargo compartment for heating. The inner diameter of the exhaust gas discharge pipe 3 is smaller than the inner diameter of the connecting pipe 521 of the second fitting part 52. When the exhaust gas passes through the exhaust gas inlet pipe 2 and the connecting pipe 521 of the second fitting part 52, the inner diameter increases at this time, according to the Venturi effect principle, the flow rate will decrease, and the pressure will increase. This pressure change will generate a certain suction or pressure difference, so that the first fitting part 51 and the second fitting part 52 can be better connected and matched, thereby reducing the leakage of exhaust gas and improving the sealing performance, while also helping to reduce noise.

[0036] The exhaust tee pipe structure 100 of the utility model comprises a tail gas shunt component 1, a tail gas inlet pipe 2 connected with the tail gas shunt component 1, a tail gas exhaust pipe 3, a tail gas heating pipe 4 and a cargo compartment connecting component 5; the tail gas shunt component 1 comprises a shunt box body 11, a sealing valve plate 12 arranged inside the shunt box body 11, a rotating shaft 13 connected with the sealing valve plate 12 and a gear adjusting part 14 connected with the tail end of the rotating shaft 13; through the cooperative work of the sealing valve plate 12, the rotating shaft 13 and the gear adjusting part 14 in the tail gas shunt component 1, the opening, closing and shunting of the tail gas to the tail gas exhaust pipe 2 or the tail gas heating pipe 4 can be flexibly realized, and the demand of tail gas emission and heating of the cargo compartment under different working conditions can be met; when the cargo compartment does not need to be heated, the tail gas can be directly discharged through the tail gas exhaust pipe 3; when the cargo compartment needs to be heated, the tail gas can enter the cargo compartment through the tail gas heating pipe 4; the cargo compartment connecting component 5 realizes the close connection and prevents the tail gas from leaking through the cooperation of the first matching part 51, the second matching part 52 and the compression spring 53; the first matching part 51 is closely sleeved with the tail gas heating pipe 4, the second matching part 52 is matched with the first matching part 51 through the conical curved surface and is clamped by the compression spring, the sealing property is improved, meanwhile, the compression spring can effectively buffer the vibration impact of the vehicle driving, reduce the damage of the parts and prolong the service life; when the tail gas passes through the connecting pipe 521 of the tail gas inlet pipe 2 and the second matching part 52, because the inner diameter is increased, according to the Venturi effect, the flow rate is reduced and the pressure is increased, the suction force or the pressure difference makes the first matching part and the second matching part more closely connected, the exhaust tail gas leakage amount is reduced, the sealing performance is improved, meanwhile, it is also helpful to reduce the noise, realizing the double effect of sealing and noise reduction.

[0037] Example 2

[0038] In the exhaust tee pipe structure 100 for sealing and noise reduction of the wide-body self-unloading vehicle in the embodiment, the overall structure frame still comprises the tail gas shunt component 1, the tail gas inlet pipe 2, the tail gas exhaust pipe 3, the tail gas heating pipe 4 and the cargo compartment connecting component 5, wherein the shunt box body 11, the sealing valve plate 12 and other parts in the tail gas shunt component 1 remain basically the same as those in the first embodiment, and the main difference lies in that the gear adjusting part 14 adopts a brand-new knob type design (not shown in the figure).

[0039] Specifically, a circular adjusting knob is installed on the outer side wall of the shunt box body. The center of the adjusting knob is connected with the rotating shaft of the sealing valve plate, and the adjusting knob is connected with the shunt box body through a sealing bearing, so that the adjusting knob can be flexibly rotated and the tail gas leakage can be prevented.

[0040] On the surface of the adjusting knob, three marks of "tail gas direct discharge", "partial heating" and "full heating" are sequentially marked along the circumferential direction, respectively corresponding to three working states that the tail gas is discharged from the tail gas exhaust pipe only, the tail gas enters the tail gas heating pipe and the tail gas exhaust pipe according to a certain proportion respectively and the tail gas enters the tail gas heating pipe entirely.

[0041] Inside the outer side wall of the distribution box, three positioning grooves are arranged corresponding to the rotating area of the adjusting knob. A positioning pin with a spring is installed on the back of the adjusting knob. When the adjusting knob is rotated, the positioning pin is always in contact with the outer side wall of the distribution box under the action of the spring. When the positioning pin falls into different positioning grooves, a slight "click" sound will be emitted, which also represents that the adjusting knob has reached the corresponding working state position, realizing accurate positioning of the sealing valve plate and further controlling the flow direction and distribution ratio of the tail gas.

[0042] For example, when the vehicle is working in a warm environment and the cargo compartment does not need to be heated, the operator rotates the adjusting knob to the "tail gas direct discharge" mark, at this time the positioning pin falls into the corresponding positioning groove, the sealing valve plate rotates and completely blocks the port of the tail gas heating pipe, and the tail gas enters the distribution box through the tail gas inlet pipe and is directly discharged from the tail gas exhaust pipe. When the cargo compartment needs to be heated in a cold environment, the adjusting knob can be rotated to the "all heating" position, the sealing valve plate closes the tail gas exhaust pipe port, and the tail gas enters the tail gas heating pipe for heating the cargo compartment. If part of the tail gas is used to heat the cargo compartment, part of the tail gas is discharged, the adjusting knob can be rotated to the "partial heating" position.

[0043] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection or integral connection, it can be mechanical connection, it can be direct connection or indirect connection through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific situation.

[0044] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0045] Based on the ideal embodiments of the present application, the above description, relevant personnel can make various changes and modifications without deviating from the scope of the present application. The technical scope of the present application is not limited to the contents in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A vent tee structure for sealing and noise reduction of a wide-body dump truck, characterized in that: The tail gas shunt assembly, the tail gas inlet pipe connected with the tail gas shunt assembly, the tail gas exhaust pipe, the tail gas heating pipe and the cargo compartment connecting assembly are provided, the tail gas shunt assembly comprises a shunt box body and a sealing valve plate arranged in the shunt box body, the cargo compartment connecting assembly comprises a first fitting part, a second fitting part and a compression spring sleeved outside the first fitting part, the first fitting part comprises a sleeve and a fitting part, the fitting part is annular, the second fitting part comprises a connecting pipe and a clamping part, the clamping part is trumpet-shaped, and a conical surface inside the clamping part is matched with the annular fitting part.

2. The exhaust tee structure for a wide-body dump truck sealed noise reduction of claim 1, wherein: The tail gas shunt assembly further comprises a rotating shaft connected with the sealing valve plate and a gear adjusting part connected with the end of the rotating shaft.

3. The exhaust tee structure for a wide-body dump truck for sealing and noise reduction according to claim 2, characterized in that: The shunt box body is internally provided with a containing cavity, the sealing valve plate is installed in the shunt box body 11, and the sealing valve plate is placed in the shunt box body and rotated by the rotating shaft to block the ports of the tail gas exhaust pipe or the tail gas heating pipe.

4. The exhaust tee structure for a wide-body dump truck sealed noise reduction of claim 3, wherein: The gear adjusting part comprises an adjusting rod, a positioning lock and a fixing bolt.

5. The exhaust tee structure for a wide-body dump truck sealed noise reduction of claim 4, wherein: The positioning lock comprises a first lock, a second lock and a third lock, the first lock, the second lock and the third lock are arranged in an arc shape with the one end of the rotating shaft as the center, and the other end of the adjusting rod is fixedly connected with the first lock, the second lock or the third lock through the fixing bolt.

6. The exhaust tee structure for a wide-body dump truck sealed noise reduction of claim 1, wherein: The tail gas inlet pipe is installed on the side wall of the shunt box body, the tail gas exhaust pipe is installed at the bottom of the shunt box body, and the tail gas heating pipe is installed at the top of the shunt box body.

7. The exhaust tee structure for a wide-body dump truck sealed noise reduction of claim 1, wherein: The inner diameter of the sleeve is matched with the outer diameter of the tail gas heating pipe, the fitting part is located at the top of the sleeve, a groove is formed in the inner side of the annular fitting part, and the compression spring is placed in the groove.

8. The exhaust tee structure for a wide-body dump truck sealed noise reduction of claim 7, wherein: One end of the compression spring is clamped on the shunt box body, and the other end of the compression spring is clamped in the groove of the fitting part 9. The exhaust tee structure for a wide-body dump truck sealed noise reduction of claim 1, wherein: The tail gas exhaust pipe is installed at the bottom of the shunt box body, a circular mounting port is formed at the bottom of the shunt box body, and the tail gas exhaust pipe is mounted.

10. The vent tee structure for a sealed noise reduction of a wide-body dump truck of claim 1, wherein: The inner diameter of the tail gas exhaust pipe is smaller than the inner diameter of the connecting pipe of the second fitting part.

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