CN113482757A

CN113482757A - Multi-loop silencer on motorcycle

Info

Publication number: CN113482757A
Application number: CN202110990493.8A
Authority: CN
Inventors: 陈华清; 齐雷; 产台台; 李陆斌; 陈禹丰; 李武; 王妙寿; 叶青春; 张益超; 梁宁伟; 郑斌
Original assignee: Zhejiang Qingniao Machinery Co ltd
Current assignee: Zhejiang Qingniao Machinery Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2021-10-08

Abstract

The invention discloses a multi-loop type silencer on a motorcycle, which comprises a tail gas discharge pipe and a silencing pipe on the motorcycle, wherein the tail gas discharge pipe is inserted in the silencing pipe, the silencing pipe comprises a cylindrical main pipe body, a reducing pipe is formed at the right end of the main pipe body, and an external thread sleeve pipe is formed at the tail end of the reducing pipe; the outer wall of the tail gas discharge pipe is formed with an annular check ring, a locking sleeve is inserted and sleeved on the check ring, the locking sleeve is in threaded connection with the external thread sleeve, and the check ring is clamped between the locking sleeve and the external thread sleeve. The silencer is provided with a plurality of partition plates which are divided into a plurality of separating cavities, the communicating of the separating cavities is realized by utilizing the ventilating pipes, a plurality of exhaust loops are formed, and a plurality of silencers are arranged in the exhaust loops, so that the noise can be effectively attenuated.

Description

Multi-loop silencer on motorcycle

Technical Field

The invention relates to the technical field of motorcycle silencers, in particular to a multi-loop silencer on a motorcycle.

Background

A muffler for a motorcycle is a device that allows airflow to pass through to attenuate noise, and is one of important parts on a motorcycle. The existing motorcycle silencer can be divided into three types, namely a resistive silencer, a reactive silencer and an impedance composite silencer, wherein the resistive silencer is used for attenuating noise transmitted along a pipeline along with distance by using the sound absorption function of a sound absorption material or a sound absorption structure so as to achieve the aim of silencing; the reactive muffler reflects sound waves with certain frequencies transmitted along the pipeline back to the direction of a sound source at a sudden position by means of sudden expansion (or contraction) of the section of the pipeline or by-pass resonance cavities, so that the aim of muffling is fulfilled; the impedance composite muffler is formed by combining the muffling principles of a resistive muffler and a reactive muffler through proper structures. The existing reactive muffler of the motorcycle is mainly characterized in that a tubular muffler is arranged on an exhaust emission pipe, a sudden expansion (or contraction) structure is formed on the inner wall of the muffler for muffling, but the exhaust emitted by the exhaust emission pipe contains small particles and dust-like substances, the small particles and the dust-like substances can be attached to the inner wall of the muffler, and the inner wall of the muffler is troublesome to clean.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a multi-loop silencer for a motorcycle, which can effectively carry out silencing, is convenient to assemble and disassemble and is convenient for cleaning, overhauling and maintaining the internal parts of the silencer.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a multi-loop silencer on a motorcycle comprises a tail gas discharge pipe and a silencing pipe on the motorcycle, wherein the tail gas discharge pipe is inserted into the silencing pipe, the silencing pipe comprises a cylindrical main pipe body, a contraction pipe is formed at the right end of the main pipe body, and an external thread sleeve pipe is formed at the tail end of the contraction pipe; an annular check ring is formed on the outer wall of the tail gas discharge pipe, a locking sleeve is inserted and sleeved on the check ring, the locking sleeve is screwed on the external thread sleeve, and the check ring is clamped between the locking sleeve and the external thread sleeve;

a first partition plate, a second partition plate, a third partition plate and a fourth partition plate are sequentially inserted into the main pipe body of the silencing pipe, and the first partition plate, the second partition plate, the third partition plate and the fourth partition plate divide the inner cavity of the silencing pipe between the first partition plate and the fourth partition plate into a first separation cavity, a second separation cavity and a third separation cavity; an exhaust hole which is opposite to the tail gas discharge pipe is formed in the second partition plate, a support sleeve which is communicated with the exhaust hole is fixed on the side end face of the second partition plate, and the tail end of the tail gas discharge pipe penetrates through the fourth partition plate and the third partition plate and is inserted in the support sleeve; the second partition plate and the third partition plate are fixedly connected with a first vent pipe communicated with the first partition cavity and the third partition cavity in an inserting mode, and the third partition plate is fixedly connected with a second vent pipe communicated with the second partition cavity and the third partition cavity in an inserting mode; a third vent pipe which is communicated with the second separation cavity and the pipe orifice at the left end of the silencing pipe is fixedly spliced on the first partition plate and the second partition plate; silencers are inserted into the orifices of the third vent pipe, the second vent pipe and the first vent pipe;

a flange is formed at the left end of the silencing pipe, a cover plate for covering the orifice of the silencing pipe is abutted against the left end surface of the silencing pipe, and an exhaust bent pipe communicated with the silencing pipe is fixedly connected to the cover plate; a plurality of support rods are fixedly inserted at the peripheries of the first partition plate, the second partition plate, the third partition plate and the fourth partition plate, and the left ends of the support rods are fixed on the cover plate; the cover plate is fixedly connected with a flange on the silencing pipe through a bolt.

Preferably, the diameter of the inner wall of the external thread sleeve on the silencing pipe is equal to the diameter of the outer wall of the exhaust emission pipe, and the diameter of the outer wall of the exhaust emission pipe is equal to the diameter of the inner wall of the support sleeve.

Preferably, the distance from the first partition plate in the silencing pipe to the right end face of the external thread sleeve is not less than the distance from the left end face of the tail gas discharge pipe to the check ring, and the diameter of the outer wall of the check ring is greater than that of the inner ring of the locking sleeve.

Preferably, the silencer comprises a circular stainless steel cylinder, a plurality of small holes are formed in the outer wall of the stainless steel cylinder, the stainless steel cylinder is inserted into the third vent pipe, the second vent pipe and the first vent pipe, a connecting sleeve with a cross section shaped is formed at one end of the stainless steel cylinder, and the connecting sleeve is screwed on the pipe orifices of the third vent pipe, the second vent pipe and the first vent pipe.

Preferably, the silencer on the first vent pipe is located at the right end of the first vent pipe, the silencer on the second vent pipe is located at the left end of the second vent pipe, and the silencer on the third vent pipe is located at the left end of the third vent pipe.

Preferably, the number of the support rods is at least two, and the support rods are uniformly distributed in an annular shape around the central axis of the main pipe body on the silencing pipe.

Preferably, the support sleeve and the external thread sleeve are internally and fixedly provided with a sealing ring in an inserted manner, and the sealing ring is pressed against the outer wall of the tail gas discharge pipe; and a sealing gasket is clamped between the cover plate and the flange.

The invention has the beneficial effects that:

(1) it sets up a plurality of baffles in the silencer inside, and the baffle partition is a plurality of compartments, utilizes the breather pipe to realize the intercommunication that separates the compartment and form a plurality of exhaust return circuits, installs a plurality of silencers in a plurality of exhaust return circuits, and then can effective attenuation noise.

(2) The structure of the silencer is convenient to disassemble and assemble, and the internal parts of the silencer are convenient to clean, overhaul and maintain.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

FIG. 2 is a partially cut-away perspective view of the present invention;

FIG. 3 is a schematic view of a partially cut-away perspective view of another embodiment of the present invention;

fig. 4 is a schematic view of a half-section structure in the front view direction of the present invention.

In the figure: 1. a tail gas discharge pipe; 1a, a retainer ring; 2. a muffler pipe; 2a, shrinking a pipe; 2b, an external thread sleeve; 2c, a flange; 3. a locking sleeve; 4. a first separator; 5. a second separator; 5a, an exhaust hole; 6. a third partition plate; 7. a fourth separator; 8. a support sleeve; 9. a muffler; 91. a stainless steel cylinder; 92. a small hole; 93. connecting sleeves; 10. a first vent pipe; 11. a second vent pipe; 12. a third vent pipe; 13. a support bar; 14. a cover plate; 15. a bolt; 16. and an exhaust elbow.

Detailed Description

Example (b): as shown in fig. 1 to 4, the multi-loop muffler on the motorcycle comprises a tail gas discharge pipe 1 and a muffler pipe 2 on the motorcycle, wherein the tail gas discharge pipe 1 is inserted into the muffler pipe 2, the muffler pipe 2 comprises a cylindrical main pipe body, a contracted pipe 2a is formed at the right end of the main pipe body, and an external thread sleeve 2b is formed at the tail end of the contracted pipe 2 a; an annular check ring 1a is formed on the outer wall of the tail gas discharge pipe 1, a locking sleeve 3 is inserted and sleeved on the check ring 1a, the locking sleeve 3 is screwed on an external thread sleeve 2b, and the check ring 1a is clamped between the locking sleeve 3 and the external thread sleeve 2 b;

a first partition plate 4, a second partition plate 5, a third partition plate 6 and a fourth partition plate 7 are sequentially inserted into the main pipe body of the muffling pipe 2, and the first partition plate 4, the second partition plate 5, the third partition plate 6 and the fourth partition plate 7 divide the inner cavity of the muffling pipe 2 between the first partition plate 4 and the fourth partition plate 7 into a first separating cavity a, a second separating cavity b and a third separating cavity c; an exhaust hole 5a opposite to the exhaust gas discharge pipe 1 is formed on the second partition plate 5, a support sleeve 8 communicated with the exhaust hole 5a is fixed on the side end face of the second partition plate 5, and the tail end of the exhaust gas discharge pipe 1 passes through a fourth partition plate 7 and a third partition plate 6 and is inserted in the support sleeve 8; the second partition plate 5 and the third partition plate 6 are fixedly provided with a first vent pipe 10 communicated with the first separating chamber a and the third separating chamber c in an inserted manner, and the third partition plate 6 is fixedly provided with a second vent pipe 11 communicated with the second separating chamber b and the third separating chamber c in an inserted manner; a third vent pipe 12 which is communicated with the second separating chamber b and the pipe orifice at the left end of the silencing pipe 2 is fixedly inserted on the first partition plate 4 and the second partition plate 5; silencers 9 are inserted into the orifices of the third vent pipe 12, the second vent pipe 11 and the first vent pipe 10;

a flange 2c is formed at the left end of the silencing pipe 2, a cover plate 14 covering the orifice of the silencing pipe 2 is abutted against the left end face of the silencing pipe 2, and an exhaust bent pipe 16 communicated with the silencing pipe 2 is fixedly connected to the cover plate 14; a plurality of support rods 13 are fixedly inserted at the peripheries of the first partition plate 4, the second partition plate 5, the third partition plate 6 and the fourth partition plate 7, and the left ends of the support rods 13 are fixed on a cover plate 14; the cover plate 14 is fixedly connected with the flange 2c on the silencing pipe 2 through bolts 15.

The diameter of external screw thread sleeve pipe 2b inner wall on muffler pipe 2 equals the diameter of 1 outer wall of tail gas discharge pipe, and the diameter of 1 outer wall of tail gas discharge pipe equals the diameter of supporting 8 inner walls of cover. The distance from the first partition plate 4 to the right end face of the external thread sleeve 2b in the silencing pipe 2 is not less than the distance from the left end face of the tail gas discharge pipe 1 to the check ring 1a, and the diameter of the outer wall of the check ring 1a is greater than that of the inner ring of the locking sleeve 3.

The silencer 9 comprises a circular stainless steel cylinder 91, a plurality of small holes 92 are formed in the outer wall of the stainless steel cylinder 91 in a molded mode, the stainless steel cylinder 91 is inserted into the third vent pipe 12, the second vent pipe 11 and the first vent pipe 10, a connecting sleeve 93 with an L-shaped cross section is formed at one end of the stainless steel cylinder 91 in a molded mode, and the connecting sleeve 93 is in threaded connection with pipe openings of the third vent pipe 12, the second vent pipe 11 and the first vent pipe 10.

The silencer 9 on the first vent pipe 10 is positioned at the right end of the first vent pipe 10, the silencer 9 on the second vent pipe 11 is positioned at the left end of the second vent pipe 11, and the silencer 9 on the third vent pipe 12 is positioned at the left end of the third vent pipe 12.

The number of the support rods 13 is at least two, and the support rods 13 are uniformly distributed in an annular shape around the central axis of the main pipe body on the silencing pipe 2.

Sealing rings are inserted and fixed in the supporting sleeve 8 and the external thread sleeve 2b, and the sealing rings are pressed on the outer wall of the tail gas discharge pipe 1; a sealing gasket is clamped between the cover plate 14 and the flange 2 c.

The working principle is as follows: the invention is a multi-circuit type muffler on a motorcycle, which is mainly characterized in that four groups of clapboards, namely a first clapboard 4, a second clapboard 5, a third clapboard 6 and a fourth clapboard 7, are arranged in a muffler pipe 2, the four groups of clapboards are divided into three separate cavities, and the third ventilating pipe 12, the second ventilating pipe 11 and the first ventilating pipe 10 are utilized to realize the communication of each separate cavity with the muffler pipe 2 and a tail gas discharging pipe 1 so as to form a plurality of exhaust loops, wherein the specific exhaust direction is formed by a tail gas discharging pipe 1 → a first separate cavity a → a third separate cavity c → a second separate cavity b → an exhaust elbow 16; silencers 9 can be arranged on the third vent pipe 12, the second vent pipe 11 and the first vent pipe 10, so that the attenuation of noise can be realized, and the effective silencing can be realized;

meanwhile, the first partition plate 4, the second partition plate 5, the third partition plate 6 and the fourth partition plate 7 are connected with the cover plate 14 through the support rods 13, and the first partition plate 4, the second partition plate 5, the third partition plate 6 and the fourth partition plate 7 can be pulled away from the silencing pipe 2 by disassembling the cover plate 14, so that the cleaning is convenient; and after the silencing pipe 2 is separated by rotating the locking sleeve 3, the silencing pipe 2 can be pulled away from the tail gas discharge pipe 1.

The examples are intended to illustrate the invention, but not to limit it. The described embodiments may be modified by those skilled in the art without departing from the spirit and scope of the present invention, and therefore, the scope of the appended claims should be accorded the full scope of the invention as set forth in the appended claims.

Claims

1. A multi-loop silencer on a motorcycle comprises a tail gas discharge pipe (1) and a silencing pipe (2) on the motorcycle, wherein the tail gas discharge pipe (1) is inserted into the silencing pipe (2), the silencing pipe (2) comprises a cylindrical main pipe body, a reducing pipe (2a) is formed at the right end of the main pipe body, and an external thread sleeve pipe (2b) is formed at the tail end of the reducing pipe (2 a); the method is characterized in that: an annular check ring (1a) is formed on the outer wall of the tail gas discharge pipe (1), a locking sleeve (3) is inserted and sleeved on the check ring (1a), the locking sleeve (3) is in threaded connection with an external thread sleeve (2b), and the check ring (1a) is clamped between the locking sleeve (3) and the external thread sleeve (2 b);

a first partition plate (4), a second partition plate (5), a third partition plate (6) and a fourth partition plate (7) are sequentially inserted into the main pipe body of the muffling pipe (2), and the first partition plate (4), the second partition plate (5), the third partition plate (6) and the fourth partition plate (7) separate the inner cavity of the muffling pipe (2) between the first partition plate (4) and the fourth partition plate (7) into a first partition cavity (a), a second partition cavity (b) and a third partition cavity (c); an exhaust hole (5a) which is opposite to the tail gas discharge pipe (1) is formed in the second partition plate (5), a supporting sleeve (8) which is communicated with the exhaust hole (5a) is fixed on the side end face of the second partition plate (5), and the tail end of the tail gas discharge pipe (1) penetrates through a fourth partition plate (7) and a third partition plate (6) and is inserted into the supporting sleeve (8); the second partition plate (5) and the third partition plate (6) are fixedly connected with a first vent pipe (10) communicated with the first separating cavity (a) and the third separating cavity (c) in an inserting way, and the third partition plate (6) is fixedly connected with a second vent pipe (11) communicated with the second separating cavity (b) and the third separating cavity (c) in an inserting way; a third vent pipe (12) which is communicated with the second separation chamber (b) and the pipe orifice at the left end of the silencing pipe (2) is fixedly inserted on the first partition plate (4) and the second partition plate (5); silencers (9) are inserted into the orifices of the third vent pipe (12), the second vent pipe (11) and the first vent pipe (10);

a flange (2c) is formed at the left end of the muffling pipe (2), a cover plate (14) covering the pipe orifice of the muffling pipe (2) is abutted against the left end face of the muffling pipe (2), and an exhaust bent pipe (16) communicated with the muffling pipe (2) is fixedly connected to the cover plate (14); a plurality of support rods (13) are fixedly inserted at the peripheries of the first partition plate (4), the second partition plate (5), the third partition plate (6) and the fourth partition plate (7), and the left ends of the support rods (13) are fixed on a cover plate (14); the cover plate (14) is fixedly connected with a flange (2c) on the silencing pipe (2) through a bolt (15).

2. The multi-circuit muffler for a motorcycle of claim 1, wherein: the diameter of the inner wall of the external thread sleeve (2b) on the silencing pipe (2) is equal to that of the outer wall of the tail gas discharge pipe (1), and the diameter of the outer wall of the tail gas discharge pipe (1) is equal to that of the inner wall of the support sleeve (8).

3. The multi-circuit muffler for a motorcycle of claim 2, wherein: the distance from the first partition plate (4) to the right end face of the external thread sleeve (2b) in the silencing pipe (2) is not less than the distance from the left end face of the tail gas discharge pipe (1) to the check ring (1a), and the diameter of the outer wall of the check ring (1a) is greater than that of the inner ring of the locking sleeve (3).

4. The multi-circuit muffler for a motorcycle of claim 1, wherein: muffler (9) are including circular shape stainless steel barrel (91), and the shaping has a plurality of aperture (92) on the outer wall of stainless steel barrel (91), and stainless steel barrel (91) are inserted and are established in third breather pipe (12), second breather pipe (11) and first breather pipe (10), and the one end shaping of stainless steel barrel (91) has transversal adapter sleeve (93) of personally submitting the L type, and adapter sleeve (93) spiro union is on the mouth of pipe of third breather pipe (12), second breather pipe (11) and first breather pipe (10).

5. The multi-circuit muffler for a motorcycle of claim 4, wherein: the silencer (9) on the first vent pipe (10) is positioned at the right end of the first vent pipe (10), the silencer (9) on the second vent pipe (11) is positioned at the left end of the second vent pipe (11), and the silencer (9) on the third vent pipe (12) is positioned at the left end of the third vent pipe (12).

6. The multi-circuit muffler for a motorcycle of claim 1, wherein: the support rods (13) are at least two, and the support rods (13) are uniformly distributed in an annular shape around the central axis of the main pipe body on the silencing pipe (2).

7. The multi-circuit muffler for a motorcycle of claim 1, wherein: sealing rings are inserted and fixed in the supporting sleeve (8) and the external thread sleeve (2b), and the sealing rings are pressed on the outer wall of the tail gas discharge pipe (1); and a sealing gasket is clamped between the cover plate (14) and the flange (2 c).