Silencer structure of double-cylinder engine

Abstract

The utility model discloses a silencer structure of a double-cylinder engine, which is used for being connected with an exhaust hole of the engine and reducing noise and comprises two front-edge pipelines, a middle connecting pipeline, a tail exhaust pipe and a silencer. Each front-edge pipeline comprises a first connecting section, a second connecting section, a third connecting section and a fixed end which are connected in sequence, and the third connecting section is connected with an exhaust hole of the engine through the fixed end; the middle connecting pipeline comprises a double-pipe connecting end and a spiral rising section, the double-pipe connecting end is connected with the first connecting section, the end of the spiral rising section is connected with the tail exhaust pipe, the silencer is arranged outside the tail exhaust pipe in a sleeving mode, the tail exhaust pipe is provided with a notch part, a plurality of via holes are evenly formed in the tail exhaust pipe in the length direction, and an inclined opening is formed in the end of the tail exhaust pipe. The exhaust efficiency of an engine is optimized, the number of small compartments in the silencer is reduced, the pipeline is optimized through the design of the U-shaped bent pipe, and the problem that the exhaust efficiency is low is solved.

Description

Technical Field

[0001] The utility model relates to ship technology, in particular to a double-cylinder engine muffler structure. Background Art

[0002] At present, ship is a general term for various vessels. Ship is a means of transportation that can sail or anchor in waters for transportation or operations. It has different technical performance, equipment and structural types according to different usage requirements. Ship plays an irreplaceable and important role in human social life. Ship undertakes various purposes such as personnel and cargo transportation, military, scientific investigation, etc. Propeller is a necessary accessory on the ship.

[0003] The patent document with application number "CN202210434196.X" discloses a transmission system and sealed heat dissipation structure for a horizontal shaft engine. The output shaft of the engine is sequentially fitted with a front clutch and a synchronous gear, and the output shaft is connected to the transmission shaft of the planetary gear set. The rear end of the transmission shaft is equipped with a rear clutch and a radiator; the planetary gear set is equipped with a first oil seal, a second oil seal and a third oil seal to cooperate in limiting the lubricating oil in the housing; the power is transmitted from the transmission shaft to the housing through the sun gear, the planetary gear and the ring gear and drives the housing to rotate, and the housing drives the synchronous gear to rotate and output power; the front clutch controls the forward rotation of the housing, and the rear clutch controls the reverse rotation of the housing; it meets the transmission system of the outboard motor of the new horizontal shaft engine, and at the same time meets the lubrication and heat dissipation of the transmission system, ensures the normal operation of the transmission system, fills the market gap, and is conducive to the development of the outboard motor industry.

[0004] The patent document with application number "CN202220956863.6" discloses a transmission system for a horizontal shaft engine, in which the output shaft of the engine is sequentially fitted with a front clutch and a synchronous wheel, the output shaft is connected to the transmission shaft of the planetary gear set, and the rear end of the transmission shaft is equipped with a rear clutch and a radiator; the planetary gear set is equipped with a first oil seal, a second oil seal and a third oil seal to cooperate in limiting the lubricating oil in the housing; the power is transmitted from the transmission shaft to the housing through the sun gear, the planetary gear and the ring gear and drives the housing to rotate, and the housing drives the synchronous wheel to rotate and output power; the front clutch controls the forward rotation of the housing, and the rear clutch controls the reverse rotation of the housing; it meets the transmission system of the outboard motor of the new horizontal shaft engine, and at the same time meets the lubrication and heat dissipation of the transmission system, ensures the normal operation of the transmission system, fills the market gap, and is conducive to the development of the outboard motor industry.

[0005] The above patent document, combined with the prior art, reveals that the existing twin-cylinder engine muffler structure has the following defects:

[0006] The exhaust of an ordinary two-cylinder engine is provided with multiple groups of small compartments in the muffler of the exhaust pipe, which slows down the gas discharge speed when the engine is exhausted and has low exhaust efficiency. Utility Model Content

[0007] In order to overcome the prior art, the utility model provides a double cylinder engine silencer structure, solves the problem of low removal efficiency.

[0008] The utility model discloses a first aspect in providing a double cylinder engine silencer structure is used for connecting with the exhaust hole of engine and reduces the noise, including two front edge pipeline, the middle part link pipeline, tail exhaust pipe, silencer, two front edge pipeline is set to U type, every the front edge pipeline is including the first connecting section, the second connecting section, the third connecting section, fixed end that link in proper order, the third connecting section is connected with the exhaust hole of engine through fixed end, the middle part link pipeline includes double -tube connecting end, spiral ascending section, double -tube connecting end is connected with first connecting section, the end of spiral ascending section is connected with tail exhaust pipe, the silencer is set up in the outside of tail exhaust pipe, tail exhaust pipe is equipped with the notched part, and along the length direction evenly is equipped with a plurality of via, and the end of tail exhaust pipe is provided with the inclined mouth.

[0009] In the utility model first aspect, as a preferred embodiment, the fixed end is sheety, and the fixed end is equipped with fixed hole.

[0010] In the utility model first aspect, as a preferred embodiment, the number of fixed hole is 2, and two fixed holes are distributed in both sides of the third connecting section.

[0011] In the utility model first aspect, as a preferred embodiment, the extension direction of first connecting section is parallel with the extension direction of the third connecting section.

[0012] In the utility model first aspect, as a preferred embodiment, the extension direction of first connecting section is perpendicular with the extension direction of the second connecting section.

[0013] In the utility model first aspect, as a preferred embodiment, the middle part of double -tube connecting end is edge -shaped, and two communication holes for linking with first connecting section respectively are equipped at double -tube connecting end.

[0014] In the utility model first aspect, as a preferred embodiment, the tail of spiral ascending section is provided with upper layer hole, and the extension direction of upper layer hole is perpendicular with the extension direction of communication hole.

[0015] In the utility model first aspect, as a preferred embodiment, the double cylinder engine silencer structure still fixed support, one end of fixed support is fixed in the engine, and the other end is fixed in the silencer.

[0016] In the first aspect of the utility model, as a preferred embodiment, the fixed support comprises a first fixed end, a connecting rod and a second fixed end connected in sequence.

[0017] In the first aspect of the utility model, as a preferred embodiment, the aperture of the middle connecting pipeline is larger than that of the front pipeline.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] The two front pipelines are arranged in a U shape, each of the front pipelines comprises a first connecting section, a second connecting section, a third connecting section and a fixed end connected in sequence, the third connecting section is connected with the exhaust hole of the engine through the fixed end, the middle connecting pipeline comprises a double-pipe connecting end and a spiral ascending section, the double-pipe connecting end is connected with the first connecting section, the end of the spiral ascending section is connected with the tail exhaust pipe, the muffler is sleeved outside the tail exhaust pipe, the tail exhaust pipe is provided with a notch portion and a plurality of through holes uniformly arranged along the length direction, and the end of the tail exhaust pipe is provided with an inclined opening. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is an exploded view of the utility model;

[0021] Figure 2 It is a perspective view of the tail exhaust pipe;

[0022] Figure 3 It is a perspective view of the utility model;

[0023] Figure 4 It is an installation view of the utility model;

[0024] Figure 5 It is another installation view of the utility model;

[0025] Figure 6 It is still another installation view of the utility model.

[0026] In the drawings: 1, engine; 2, front pipeline; 21, first connecting section; 22, second connecting section; 23, third connecting section; 24, fixed end; 4, middle connecting pipeline; 41, double-pipe connecting end; 42, spiral ascending section; 5, tail exhaust pipe; 51, notch portion; 52, through hole; 53, inclined opening; 6, muffler; 7, fixed support. DETAILED DESCRIPTION

[0027] The utility model will be further described below in conjunction with the drawings and specific embodiments. It should be noted that the embodiments described below or the technical features between them can be combined to form new embodiments without conflict. Unless otherwise specified, the materials and equipment used in the embodiments can be purchased from the market. Examples of the embodiments are shown in the drawings, in which the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the application and cannot be understood as limiting the application.

[0028] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified and limited.

[0029] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or connected through an intermediate medium, or the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] The terms "first", "second", and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those clearly listed steps or units, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0031] As Figures 1-6As shown, a double-cylinder engine muffler structure for connecting with the exhaust hole of the engine 1 and reducing noise comprises two front edge pipes 2, a middle connecting pipe 4, a tail exhaust pipe 5 and a muffler 6, the two front edge pipes 2 are arranged in a U shape, each of the front edge pipes 2 comprises a first connecting section 21, a second connecting section 22, a third connecting section 23 and a fixed end 24 connected in sequence, the third connecting section 23 is connected with the exhaust hole of the engine 1 through the fixed end 24, the middle connecting pipe 4 comprises a double-pipe connecting end 41 and a spiral rising section 42, the double-pipe connecting end 41 is connected with the first connecting section 21, the end of the spiral rising section 42 is connected with the tail exhaust pipe 5, the muffler 6 is sleeved outside the tail exhaust pipe 5, the tail exhaust pipe 5 is provided with a notch part 51 and a plurality of through holes 52 uniformly arranged along the length direction, and the end of the tail exhaust pipe 5 is provided with an inclined opening 53. The two front edge pipes 2, the middle connecting pipe 4, the tail exhaust pipe 5 and the muffler 6 are cooperatively operated, the two front edge pipes 2 arranged in a U shape are connected with the exhaust hole of the engine 1 and reduce noise, the efficiency of the engine exhaust gas is optimized, the number of small compartments in the muffler is reduced, the U-shaped bend pipe is designed to optimize the pipeline, the engine exhaust is smoother, and the problem of low exhaust efficiency is solved.

[0032] In the first aspect of the utility model, as a kind of preferred embodiment, the fixed end 24 is sheet-shaped, and the fixed end 24 is provided with a fixing hole. Specifically, the number of the fixing hole is two, and the two fixing holes are distributed on the two sides of the third connecting section 23, facilitating installation.

[0033] In the first aspect of the utility model, as a kind of preferred embodiment, the extension direction of the first connecting section 21 is parallel to the extension direction of the third connecting section 23. The extension direction of the first connecting section 21 is perpendicular to the extension direction of the second connecting section 22. The middle part of the double-pipe connecting end 41 is edge-shaped, and two communication holes for connecting with the first connecting section 21 are arranged at the double-pipe connecting end 41.

[0034] In the first aspect of the utility model, as a kind of preferred embodiment, the tail of the spiral rising section 42 is provided with an upper layer hole, and the extension direction of the upper layer hole is perpendicular to the extension direction of the communication hole. The double-cylinder engine muffler structure further comprises a fixed support 7, one end of the fixed support 7 is fixed to the engine 1, and the other end is fixed to the muffler 6, to improve the compactness of the structure.

[0035] In the first aspect of the utility model, as a kind of preferred embodiment, the fixed support 7 comprises a first fixed end, a connecting rod and a second fixed end connected in sequence. The aperture of the middle connecting pipe 4 is larger than that of the front edge pipe 2.

[0036] Specifically, the double pipe connecting end 41 and the tail of the spiral ascending section 42 are provided with fixing holes, which can be in the form of threaded holes or other holes for connection or fixation, and are applied to small double-cylinder engine exhaust, increase the exhaust volume and increase the power.

[0037] Specifically, the muffler 6 is provided with a plurality of screw mounting holes at both ends, and is internally provided with high-temperature-resistant sound-absorbing cotton. The design achieves smooth exhaust, increases the power of the engine through rapid exhaust, and appropriately increases the power of the engine.

[0038] The above-mentioned embodiments are only preferred embodiments of the utility model, and cannot be used to limit the range of the utility model protection, and any non-substantial changes and replacements made by the person skilled in the art on the basis of the utility model belong to the range of the utility model protection.

Claims

1. A twin-cylinder engine muffler structure for connecting to an exhaust hole of an engine and reducing noise, characterized by, The application relates to a double-cylinder engine muffler structure, which comprises two front edge pipes, a middle connecting pipe, a tail exhaust pipe and a muffler, wherein the two front edge pipes are arranged in a U shape, each of the front edge pipes comprises a first connecting section, a second connecting section, a third connecting section and a fixed end which are sequentially connected, the third connecting section is connected with an exhaust hole of an engine through the fixed end, the middle connecting pipe comprises a double-pipe connecting end and a spiral ascending section, the double-pipe connecting end is connected with the first connecting section, the end of the spiral ascending section is connected with the tail exhaust pipe, the muffler is arranged outside the tail exhaust pipe, the tail exhaust pipe is provided with a notch part and a plurality of through holes which are uniformly arranged along the length direction, and the end of the tail exhaust pipe is provided with an inclined port. The fixed end is in a sheet shape, and the fixed end is provided with a fixed hole.

2. The twin-cylinder engine muffler structure according to claim 1, characterized by: The number of the fixed holes is two, and the two fixed holes are arranged on the two sides of the third connecting section.

3. The twin-cylinder engine muffler structure according to claim 2, characterized by: The extending direction of the first connecting section is parallel to the extending direction of the third connecting section.

4. The twin-cylinder engine muffler structure according to claim 1, characterized by: The extending direction of the first connecting section is perpendicular to the extending direction of the second connecting section.

5. The twin-cylinder engine muffler structure according to claim 4, characterized by: The middle part of the double-pipe connecting end is in a pressed edge shape, and the double-pipe connecting end is provided with two communication holes which are respectively used for connecting with the first connecting section.

6. The twin-cylinder engine muffler structure according to claim 1, characterized by: The tail of the spiral ascending section is provided with an upper layer hole, and the extending direction of the upper layer hole is perpendicular to the extending direction of the communication hole.

7. The twin-cylinder engine muffler structure according to claim 6, characterized by: The double-cylinder engine muffler structure is further provided with a fixed support, one end of the fixed support is fixed to the engine, and the other end of the fixed support is fixed to the muffler.

8. The twin-cylinder engine muffler structure according to claim 1, characterized by: The fixed support comprises a first fixed end, a connecting rod and a second fixed end which are sequentially connected.

9. The twin-cylinder engine muffler structure according to claim 8, characterized by: The hole diameter of the middle connecting pipe is larger than that of the front edge pipe.

10. The twin-cylinder engine muffler structure according to claim 1, characterized by: ​

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