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CN-224214240-U - Noise-reducing exhaust pipe for motorcycle

CN224214240UCN 224214240 UCN224214240 UCN 224214240UCN-224214240-U

Abstract

The utility model provides a silencing exhaust pipe of a motorcycle, belongs to the technical field of motorcycle components, and solves the technical problems that the existing silencing exhaust pipe is poor in silencing effect and cannot balance exhaust back pressure. The exhaust pipe is arranged between the air outlet end cover piece and the air inlet end cover piece, a flow guiding piece, a baffle piece and a ventilation silencing piece are sequentially arranged inside the exhaust pipe from front to back, an air outlet pipe is arranged between the air outlet end cover piece and the ventilation silencing piece, and a flow guiding pipe is arranged between the ventilation silencing piece and the baffle piece. The utility model can carry out multiple volume mutation, reduce density and pressure, weaken noise, change flow direction, reduce kinetic energy, generate turbulence, ensure exhaust efficiency, counteract noise, divide exhaust gas into a plurality of small airflows, absorb and counteract the generated noise through resonance effect, form a drainage channel, discharge condensed water, avoid corrosion, relieve pressure mutation, balance exhaust back pressure and facilitate noise reduction.

Inventors

  • WU JIANFENG
  • WU TONG

Assignees

  • 缙云县吴桐树五金制品有限公司

Dates

Publication Date
20260508
Application Date
20250716

Claims (7)

  1. 1. The utility model provides a motorcycle amortization blast pipe, including giving vent to anger end cover piece (1) and inlet end cover piece (3), a serial communication port, be equipped with blast pipe main part (2) between end cover piece (1) and inlet end cover piece (3) of giving vent to anger, inside from front to back of blast pipe main part (2) is equipped with water conservancy diversion piece (4) in proper order, baffle piece (5) and amortization piece of ventilating (7), be equipped with outlet duct (8) between end cover piece (1) and amortization piece of ventilating (7) of giving vent to anger, be equipped with honeycomb duct (6) between amortization piece of ventilating (7) and baffle piece (5) of ventilating, be connected through the pipeline between inlet end cover piece (3) and the outside engine gas outlet, water conservancy diversion piece (4), baffle piece (5), honeycomb duct (6), amortization piece of ventilating (7) and outlet duct (8) divide into the inside blast pipe main part (2) of ventilating from front to back in proper order into the air expansion chamber between inlet end cover piece (3) and the water conservancy diversion piece (4), the air inlet chamber between baffle piece (7) and the baffle piece (5) of ventilating and the exhaust chamber between amortization piece (7) and the amortization piece (7) of ventilating and the expansion chamber (7) of ventilating between amortization piece (1) and the expansion chamber of ventilating expansion chamber and the expansion chamber (7 of ventilating respectively, the air inlet end of the air outlet pipe (8) is communicated with the exhaust silencing cavity, and the air outlet end of the air outlet pipe (8) is communicated with the outside.
  2. 2. The motorcycle silencing exhaust pipe according to claim 1, wherein the air inlet end cover piece (3) comprises an air inlet end cover plate (30), an annular fixing plate I (23) is fixed on the outer side of the air inlet end cover plate (30), a protruding circular ring (26) is arranged on the rear side of the air inlet end cover plate (30), a fixing groove is formed between the protruding circular ring (26) and the annular fixing plate I (23), an air inlet (25) is formed in the middle position of the air inlet end cover plate (30), a plurality of circumferentially uniformly distributed mounting screw holes (24) are formed in the air inlet end cover plate (30), the mounting screw holes (24) are all located between the air inlet (25) and the protruding circular ring (26), an external engine air outlet pipeline is connected to the front side of the air inlet end cover plate (30) through a plurality of mounting screw holes (24) in a screwed mode, and the air inlet (25) is communicated with the external engine air outlet pipeline.
  3. 3. The silencing exhaust pipe of the motorcycle according to claim 2, wherein the exhaust end cover member (1) comprises an exhaust end cover plate (31), an annular fixing plate II (27) is fixed on the outer side of the exhaust end cover plate (31), the inner diameter of the annular fixing plate II (27) is equal to that of the annular fixing plate I (23), a fixing hole III (28) is formed in the exhaust end cover plate (31), the fixing hole III (28) is located at an eccentric position, the center of the fixing hole III (28) is located at the middle point of the radius, and the exhaust end of the exhaust pipe (8) is fixed inside the fixing hole III (28).
  4. 4. A motorcycle silencing exhaust pipe according to claim 3, characterized in that the outer diameter of the exhaust pipe main body (2) is equal to the inner diameter of the annular fixing plate II (27), one end of the exhaust pipe main body (2) is fixed on the inner side of the annular fixing plate II (27), the other end of the exhaust pipe main body (2) is fixed inside the fixing groove, the outer side of the exhaust pipe main body (2) is provided with a drain pipe (10), the drain pipe (10) is communicated with the expansion silencing cavity, three groups of fixing hole groups are sequentially arranged on the exhaust pipe main body (2) from front to back, each fixing hole group consists of a plurality of fixing holes (9) uniformly distributed on the circumference, and the inner wall of the exhaust pipe is provided with a high-temperature-resistant glass fiber sound absorbing layer.
  5. 5. The silencing exhaust pipe for the motorcycle according to claim 4, wherein the guide piece (4) comprises a bottom plate (13), the outer diameter of the bottom plate (13) is equal to the inner diameter of the main body (2) of the exhaust pipe, an annular mounting plate I (14) is fixed on the outer side of the bottom plate (13), the annular mounting plate I (14) is fixed inside the main body (2) of the exhaust pipe through a plurality of fixing holes (9) of a first group of fixing holes, an arc plate I (11) is arranged on the annular mounting plate I (14), a drainage hole I is formed between the arc plate I (11) and the inner wall of the main body (2) of the exhaust pipe, a plurality of guide holes which are uniformly distributed in a spindle shape are formed in the circumference of the bottom plate (13), arc guide plates (12) are arranged on two sides of each guide hole, the two arc guide plates (12) are opposite in directions, the arc guide plates (12) are in a quarter spindle shape, and the projection size of each arc guide plate (12) is half of the guide hole.
  6. 6. The motorcycle silencing exhaust pipe according to claim 5, wherein the ventilation silencing piece (7) comprises a silencing plate (19), an annular mounting plate II (17) is fixed on the outer side of the silencing plate (19), the outer diameter of the annular mounting plate II (17) is equal to the inner diameter of the exhaust pipe main body (2), an arc plate II (15) is arranged on the annular mounting plate II (17), the arc plate II (15) and the arc surface of the arc plate I (11) are coplanar, a drainage hole II is formed between the arc plate II (15) and the inner wall of the exhaust pipe main body (2), the drainage hole II corresponds to the drainage hole I in position, two symmetrically arranged fixing holes I (16) are formed in the silencing plate (19), the centroid of the drainage hole II is located on the connecting line of the centers of the two fixing holes I (16), the air inlet end of the air outlet pipe (8) is fixed inside the fixing hole I (16) close to the arc plate II (15), the axis of the fixing hole I (16) close to the arc plate II (15) is collinear with the axis of the fixing hole III (28), the silencing plate II (15) is formed on the plate (19), the ventilation holes (18) are symmetrically arranged on the two sides of the two guide pipes (16) and the two sides of the two guide pipes (16) are fixed on the two sides of the two guide pipes (16).
  7. 7. The motorcycle silencing exhaust pipe according to claim 6, wherein the baffle member (5) comprises a baffle (29), an annular mounting plate III (20) is fixed on the outer side of the baffle (29), the outer diameter of the annular mounting plate III (20) is equal to the inner diameter of the exhaust pipe main body (2), an arc-shaped plate III (21) is arranged on the annular mounting plate III (20), the arc-shaped surface of the arc-shaped plate III (21) is coplanar with the arc-shaped surface of the arc-shaped plate II (15), a water draining hole III is formed between the arc-shaped plate II (15) and the inner wall of the exhaust pipe main body (2), the water draining hole III corresponds to the water draining hole II in position, a fixing hole II (22) is formed in the baffle (29), the fixing hole II (22) is located at the eccentric position, the center of the fixing hole II (22) is located at the midpoint of the radius, the air inlet end of the guide pipe (6) is fixed inside the fixing hole II (22), and the axis of the fixing hole II (22) is collinear with the axis of the fixing hole I (16) far away from the arc-shaped plate II (15).

Description

Noise-reducing exhaust pipe for motorcycle Technical Field The utility model belongs to the technical field of motorcycle components, and relates to a silencing exhaust pipe, in particular to a silencing exhaust pipe of a motorcycle. Background With the increasing development of the technological level and the improvement of the living standard of people, various motor vehicles are widely applied to the daily life of people as a common transportation means. Such as a motorcycle, is widely used as an example. The motorcycle belongs to a motor vehicle, and the motor vehicle can generate relatively large noise due to the power factor, so various silencing devices are widely applied to the motor vehicle, and the motor vehicle is additionally provided with a silencer to achieve the aim of reducing the noise. The motorcycle muffler used at present is simple in structure, poor in noise elimination effect, large in exhaust resistance of a commonly used single-exhaust structure, capable of affecting the noise elimination effect, incapable of balancing exhaust back pressure while silencing, and incapable of discharging water entering the exhaust pipe during daily use. Therefore, we propose a motorcycle amortization blast pipe, can carry out many times volume mutation, reduce waste gas density and pressure, weaken the noise, can change waste gas flow direction, reduce gas kinetic energy, can produce the torrent, when guaranteeing exhaust efficiency, dispersion impact pressure, offset the noise, can separate into a plurality of tiny air currents with waste gas to through resonance effect, absorb the noise that offset produced, can form drainage channel, discharge comdenstion water, avoid corrosion, can alleviate pressure mutation, balanced exhaust backpressure is convenient for reduce noise. Disclosure of utility model The utility model aims at solving the problems in the prior art and provides a silencing exhaust pipe of a motorcycle, which aims at solving the technical problems of silencing noise generated when exhaust gas of the motorcycle is discharged through the silencing exhaust pipe, balancing exhaust back pressure and discharging condensed water after the exhaust pipe is cooled. The aim of the utility model can be achieved by the following technical scheme: The utility model provides a motorcycle amortization blast pipe, includes the end cover spare and the end cover spare that admits air of giving vent to anger, be equipped with the blast pipe main part between end cover spare and the end cover spare that admits air, the inside water conservancy diversion spare that is equipped with in proper order from front to back of blast pipe main part, baffle piece and the amortization spare of ventilating, be equipped with the outlet duct between end cover spare and the amortization spare of ventilating, be equipped with the honeycomb duct between the amortization spare of ventilating, the end cover spare that admits air is connected through the pipeline between the gas outlet of the external engine, the air conservancy diversion piece, baffle piece, the honeycomb duct, the amortization spare of ventilating and outlet duct divide into the inside gas expansion chamber between end cover spare and the water conservancy diversion spare of intaking, the water conservancy diversion air inlet chamber between baffle piece and the amortization spare of ventilating, the amortization chamber of discharging amortization spare and the amortization spare of ventilating and the expansion amortization chamber of ventilating between the air inlet chamber and the expansion amortization chamber, the inlet end of the honeycomb duct is linked together with the air inlet chamber of discharging, the outlet end of outlet duct is linked together with the external world. The working principle of the utility model is as follows: the high-speed exhaust gas of the motorcycle engine enters a gas expansion cavity in the exhaust pipe main body from an air inlet end cover member through a pipeline, the gas enters a larger space to generate volume mutation, the density and the pressure are reduced, the speed is reduced, so that impulse noise is reduced, after the high-speed exhaust gas enters the exhaust pipe main body, the high-speed exhaust gas is impacted on a flow guiding member to buffer the speed of the exhaust gas, the gas kinetic energy is reduced, the exhaust gas is dispersed through the flow guiding member and the rotating gas is manufactured in the air inlet cavity, a turbulence effect is formed, the exhaust gas impact pressure is ensured, and the turbulence effect is generated, the turbulence noise is generated, the sound wave of the turbulence noise interferes with impulse noise, then the exhaust gas enters a flow guiding inlet cavity from the flow guiding pipe, and enters an expansion silencing cavity between an air outlet end cover member and the ventilation silencing member from the flow guiding pipe, the volume mutation, the density an