Rainproof tail pipe structure, engine and vehicle
By setting a tailpipe baffle on the top of the exhaust tailpipe and processing a water guide groove in the tailpipe support, the problem of rainwater floating into the exhaust tailpipe is solved, achieving rainproof effect and reducing production costs.
Patent Information
- Application Number
- CN202420813183.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-18
AI Technical Summary
In the rainy weather with wind, rainwater will still easily fall into the tailpipe, causing engine water inlet, shutdown or cylinder block damage, and the existing rainproof structure increases production costs.
A rainproof exhaust tailpipe structure is designed. By setting a tailpipe baffle on the top of the exhaust tailpipe and processing a water guide groove in the tailpipe support, rainwater can flow into the water guide groove along the pipe wall and discharge to the outside of the pipe to prevent rainwater from entering the engine.
Effectively prevent rainwater from floating into the exhaust tailpipe and accumulate, ensuring the normal operation of the engine, with a simple structure and low production cost.
Smart Images
Figure CN222596157U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engine exhaust tail pipes, and in particular to a rainproof exhaust tail pipe structure, an engine and a vehicle. Background Art
[0002] The exhaust tail pipe in construction machinery refers to the engine component that is directly connected to the atmosphere after being connected to the muffler or aftertreatment system. The waterproof requirements for non-road stage IV engine aftertreatment are relatively strict, and it is strictly forbidden for rainwater to enter the aftertreatment in large quantities. The existing exhaust tail pipe generally goes vertically upward to a certain height and then opens diagonally downward through a curved pipe at one end to exhaust, which can prevent rainwater from falling directly into the tail pipe and damaging the engine. However, in rainy weather accompanied by wind, rainwater is still easy to fall into the exhaust tail pipe, especially for some machines with exhaust tail pipes facing the windward side, such as the PB878H excavator loader, rainwater is more likely to float into the tail pipe in large quantities. When the vehicle is parked or in operation, water entering the exhaust pipe will cause water to enter the engine cylinder, causing the engine to stall or the cylinder to be damaged; some vehicles are equipped with aftertreatment systems, which will also cause damage to the aftertreatment system, so the rainproof performance of the exhaust tail pipe needs to be further improved.
[0003] Existing structures for protecting exhaust tail pipes from rain often require major changes to the shape and structure of the exhaust tail pipe. For example, patent CN 217632634 U discloses a rain protection structure for an exhaust tail pipe, which adds a cover plate and a drainage cover to the straight pipe portion to drain rainwater that enters the pipe to avoid accumulation. Such improvements mean an increase in the production cost or procurement cost of the exhaust tail pipe. Utility Model Content
[0004] In view of the deficiencies in the above-mentioned prior art, the utility model provides a rainproof exhaust tail pipe structure, an engine and a vehicle, which can prevent rainwater from drifting into the exhaust tail pipe and accumulating therein, thereby ensuring the normal operation of the engine, and has a simple structure and low production cost.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A rainproof exhaust tail pipe structure comprises an exhaust tail pipe connected to an engine exhaust system, wherein the bottom of the exhaust tail pipe is fixedly mounted to the exhaust system via a tail pipe support; the upper portion of the tail pipe support is sleeved in the exhaust tail pipe and is processed with a water guide groove; and a tail pipe baffle is arranged on the top of the exhaust tail pipe.
[0007] Furthermore, the top of the exhaust tail pipe is a curved pipe structure, the end of the curved pipe structure is a pipe opening with an inclined cross-section, and the tail pipe baffle is arranged at the bottom of the pipe opening.
[0008] Furthermore, the tail pipe baffle is made of Q355B steel and is welded to the exhaust tail pipe.
[0009] Furthermore, the tail pipe support includes a connecting pipe portion and a connecting seat portion, the connecting pipe portion is coaxially sleeved in the exhaust tail pipe, and the connecting seat portion is provided with a bolt hole for fixed connection with the engine exhaust system.
[0010] Furthermore, a transition connecting pipe of the engine exhaust system is provided below the connecting seat, a tail pipe bracket is welded to the top of the transition connecting pipe, and the tail pipe bracket is bolted to the connecting seat.
[0011] Furthermore, the connecting pipe portion and the exhaust tail pipe are fastened with a T-shaped strong clamp.
[0012] Furthermore, a plurality of water guide grooves are provided on the outer wall surface of the connecting pipe portion, and the water guide grooves are axially arranged. After rainwater enters the exhaust tail pipe, it can flow into the water guide grooves along the pipe wall and then be discharged to the outside of the pipe, thereby preventing rainwater from entering the engine.
[0013] Furthermore, a groove extending to the end is provided on the upper surface of the connecting seat, and the position of the groove is arranged corresponding to the water guide groove, so that rainwater discharged from the water guide groove can be quickly discharged through the groove.
[0014] Furthermore, the top end of the connecting pipe portion is rounded to facilitate the connecting pipe portion to be smoothly inserted into the drainage tail pipe, and also to facilitate rainwater entering the tail pipe to flow into the water guide groove.
[0015] Furthermore, the shielding area of the tail pipe baffle at the pipe opening accounts for 30±5% of the inclined cross-sectional area of the pipe opening.
[0016] An engine comprises a rainproof exhaust tail pipe structure as described in any one of the above items.
[0017] A vehicle comprises an engine, wherein the engine is the above-mentioned engine.
[0018] By adopting the above technical solution, the beneficial effects of the utility model are as follows:
[0019] 1. The utility model reduces the opening at the pipe mouth by the tail pipe baffle at the pipe mouth, which can prevent part of the rainwater from drifting into the tail pipe; at the same time, the heightening of the tail pipe baffle allows part of the rainwater entering the pipe to flow into the exhaust tail pipe along the pipe wall after hitting the baffle, and then be discharged from the pipe through the water guide groove arranged on the tail pipe support, effectively preventing rainwater from entering the engine along the exhaust system, and ensuring the normal operation of the engine.
[0020] 2. The utility model has a simple structure, does not need to change the shape and size of the original exhaust tail pipe, has a simple processing technology and low production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0023] Figure 2 It is a schematic diagram of the partial structure of the exhaust tail pipe of the utility model;
[0024] Figure 3 This is a schematic diagram of the tail pipe support structure of the utility model.
[0025] In the figure: 1. exhaust tail pipe; 2. tail pipe baffle; 3. tail pipe support; 31. connecting pipe; 32. connecting seat; 33. water guide groove; 34. slot; 4. tail pipe bracket; 5. transition connecting pipe. DETAILED DESCRIPTION
[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0027] It should be noted that the following detailed descriptions are exemplary and are intended to provide further description of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.
[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0029] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.
[0030] Embodiment 1
[0031] In a typical embodiment of the present application, a rainproof exhaust tail pipe structure is provided, such as Figure 1-3 As shown, it includes an exhaust tail pipe 1 connected to the engine exhaust system, and the bottom of the exhaust tail pipe is fixedly connected to the exhaust system through a tail pipe support 3; the upper part of the tail pipe support 3 is sleeved in the exhaust tail pipe 1 and is processed with a water guide groove 33; a tail pipe baffle 2 is set at the top pipe opening of the exhaust tail pipe 1.
[0032] Specifically, Figure 1 As shown, the tail pipe support 3 is fixedly installed on the engine exhaust system through the tail pipe bracket 4, and the bottom of the exhaust tail pipe 1 is sleeved on the outside of the tail pipe support 3. In order to fix it, a T-shaped strong clamp is sleeved between the bottom of the connecting pipe part and the exhaust tail pipe for fastening.
[0033] The tail pipe adopts the existing structure, the top of the straight pipe part is a curved pipe structure, the end of the curved pipe structure is a pipe mouth with an inclined cross section, and the pipe mouth is an inwardly inclined cut to prevent rain from falling directly into the tail pipe. The tail pipe baffle is set at the bottom of the pipe mouth, and the exhaust gas discharged by the engine is discharged obliquely outward at the pipe mouth. Since the curved pipe structure of the tail pipe is usually not completely downward, it is inevitable that some of it will float into the exhaust tail pipe along the pipe mouth in heavy rain or windy weather. If it is not discharged in time, it is easy to damage the engine.
[0034] like Figure 2 As shown, the tail pipe baffle 2 is welded at the bottom of the pipe mouth, and is arranged along the inclined section of the pipe mouth in a manner that fits the shape of the cutout, which is convenient for welding. The shielding area of the tail pipe baffle is set to 30±5% of the inclined section area of the pipe mouth, which not only ensures effective blocking of rain and snow, but also ensures smooth exhaust of the engine; at the same time, it also allows part of the rainwater that floats into the pipe to flow downward along the inner wall of the exhaust tail pipe after hitting the tail pipe baffle at the pipe mouth. The tail pipe baffle is made of Q355B steel, which is consistent with the exhaust tail pipe material, making it easier to select welding materials.
[0035] In order to further prevent rainwater from entering the exhaust system, a water guide groove 33 is processed on the tail pipe support 3 to timely discharge rainwater flowing along the inner wall of the exhaust tail pipe to protect the engine. Figure 3 As shown, the tail pipe support 3 includes a connecting pipe portion 31 and a connecting seat portion 32. The connecting pipe portion 31 is vertically arranged and coaxial with the exhaust tail pipe 1, and is sleeved in the exhaust tail pipe. The connecting seat portion 32 is fixed to the bottom of the connecting pipe portion. The connecting pipe portion and the connecting seat portion can be processed as a whole or welded. The connecting seat portion is provided with a plurality of bolt holes for bolting with the tail pipe support, and then fixedly connected with the engine exhaust system. Specifically, as Figure 1 As shown, a transition connecting pipe 5 of the engine exhaust system is provided below the connecting seat 32. The transition connecting pipe is a 90° elbow, one end of which is connected to other parts of the exhaust system, and a tail pipe bracket 4 is welded on the top of the other end. The tail pipe bracket is an S-shaped bent plate. The tail pipe bracket 4 is bolted to the connecting seat 32, thereby realizing a fixed connection between the exhaust tail pipe and the exhaust system.
[0036] A plurality of water guide grooves 33 are provided on the outer wall surface of the connecting pipe portion 31, and each water guide groove 33 is axially arranged. After rainwater enters the exhaust tail pipe, it can flow into the water guide groove along the pipe wall and then be discharged to the outside of the pipe, thereby preventing rainwater from entering the engine and achieving a rainproof function.
[0037] like Figure 3 As shown, the connecting pipe portion is arranged in the middle position of the connecting seat portion, and the upper surface of the connecting seat portion 32 is provided with a plurality of grooves 34 extending from the bottom end of the connecting pipe portion to the outer end of the connecting seat portion. The positions of the grooves 34 are arranged corresponding to the water guide grooves 33, and can also be slightly staggered, so that rainwater discharged from the water groove can be quickly discharged through the grooves, avoiding accumulation of rainwater at the bottom end of the connecting pipe portion when there is a lot of rainwater.
[0038] In addition, the top end of the connecting pipe portion 31 is rounded, which makes it easier for the connecting pipe portion to be smoothly inserted into the drainage tail pipe, and is also beneficial for more rainwater entering the tail pipe to flow into the water guide groove for discharge.
[0039] This embodiment arranges a tail pipe baffle in the exhaust tail pipe and simultaneously processes a water guide groove in the tail pipe support. On the one hand, it can better prevent rainwater from drifting into the pipe, and on the other hand, it can discharge the rainwater that has entered the pipe in time, thereby avoiding rainwater from entering the exhaust system in bad weather and causing engine failure, and ensuring that the vehicle with the exhaust tail pipe on the windward side can operate stably.
[0040] In addition, the present application also discloses an engine, including an exhaust tail pipe structure, wherein the exhaust tail pipe structure is the rainproof exhaust tail pipe structure disclosed in the above-mentioned embodiment. Therefore, the engine having the rainproof exhaust tail pipe structure also has all the above-mentioned technical effects, which will not be repeated here one by one.
[0041] In addition, the present application also discloses a vehicle, including an engine, wherein the engine is the engine disclosed in the above embodiment, and therefore, the vehicle having the engine also has all the above technical effects, which will not be described one by one here. It is worth mentioning that the vehicle described in this embodiment is not a motor vehicle in a narrow sense, but also includes engineering machinery such as excavators, loaders, and backhoe loaders.
[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Those skilled in the art should understand that the utility model can be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A rainproof exhaust tail pipe structure, characterized in that: It comprises an exhaust tail pipe connected to the engine exhaust system, wherein the bottom of the exhaust tail pipe is fixedly mounted to the exhaust system via a tail pipe support; the upper part of the tail pipe support is sleeved in the exhaust tail pipe and is processed with a water guide groove; and a tail pipe baffle is arranged on the top of the exhaust tail pipe.
2. A rainproof exhaust tail pipe structure according to claim 1, characterized in that: The top of the exhaust tail pipe is a curved pipe structure, the end of the curved pipe structure is a pipe opening with an inclined cross section, and the tail pipe baffle is arranged at the bottom of the pipe opening.
3. The rainproof exhaust tail pipe structure according to claim 1, characterized in that: The tail pipe support comprises a connecting pipe portion and a connecting seat portion, wherein the connecting pipe portion is coaxially sleeved in the exhaust tail pipe, and the connecting seat portion is provided with bolt holes for fixed connection with the engine exhaust system.
4. A rainproof exhaust tail pipe structure as claimed in claim 3, characterized in that: A transition connecting pipe of the engine exhaust system is arranged below the connecting seat, a tail pipe bracket is welded on the top of the transition connecting pipe, and the tail pipe bracket is bolted to the connecting seat.
5. The rainproof exhaust tail pipe structure according to claim 3, characterized in that: A plurality of water guide grooves are provided on the outer wall surface of the connecting pipe portion, and the water guide grooves are arranged axially; a groove extending to the end is provided on the upper surface of the connecting seat portion, and the position of the groove is arranged corresponding to the water guide groove.
6. The rainproof exhaust tail pipe structure according to claim 3, characterized in that: The connecting pipe portion and the exhaust tail pipe are fastened by a T-shaped strong clamp.
7. The rainproof exhaust tail pipe structure according to claim 3, characterized in that: The top end of the connecting pipe portion is processed with a rounded corner.
8. The rainproof exhaust tail pipe structure according to claim 1, characterized in that: The shielding area of the tail pipe baffle at the pipe opening accounts for 30±5% of the inclined cross-sectional area of the pipe opening.
9. An engine, comprising an exhaust tail pipe structure, characterized in that: The exhaust tail pipe structure is the rainproof exhaust tail pipe structure according to any one of claims 1 to 8.
10. A vehicle comprising an engine, characterized in that: The engine is the engine according to claim 9.