CN116428043A - Air flow silencing system for tractor - Google Patents
Air flow silencing system for tractor Download PDFInfo
- Publication number
- CN116428043A CN116428043A CN202310686707.1A CN202310686707A CN116428043A CN 116428043 A CN116428043 A CN 116428043A CN 202310686707 A CN202310686707 A CN 202310686707A CN 116428043 A CN116428043 A CN 116428043A
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- silencer
- noise
- air flow
- tractor
- exhaust
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- 230000030279 gene silencing Effects 0.000 title claims abstract description 42
- 230000003584 silencer Effects 0.000 claims abstract description 70
- 238000012544 monitoring process Methods 0.000 claims abstract description 26
- 230000002159 abnormal effect Effects 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 12
- 229920000742 Cotton Polymers 0.000 claims description 10
- 244000309464 bull Species 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 abstract 1
- 238000007726 management method Methods 0.000 description 9
- 238000007789 sealing Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/02—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate silencers in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/12—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention relates to the technical field of exhaust silencing of tractors, in particular to an airflow silencing system for a tractor, which comprises an exhaust pipeline, a primary silencer, a secondary silencer and a silencing management system, wherein flanges are connected to two sides of the primary silencer and two sides of the secondary silencer, the primary silencer is positioned at the front side of the secondary silencer, the primary silencer and the secondary silencer are connected with the exhaust pipeline through the flanges, and a rear cover is arranged at the rear side of the primary silencer. According to the invention, by arranging the noise monitoring system, the noise monitoring on the exhaust pipeline can be realized, and each section is monitored respectively, so that the fault fixed point can be conveniently and timely checked when the silencer fails; the function of adjusting the silencing strength of the primary silencer can be realized by arranging the baffle plate, the traction rod, the fixed rod, the connecting rod and the rotating rod; through setting up the second grade muffler, can reach the acceleration air current circulation, compensate the problem that installs the muffler additional on the exhaust pipe and arouse the increase of exhaust back pressure, balance the output power of engine.
Description
Technical Field
The invention relates to the technical field of tractor exhaust silencing, in particular to an airflow silencing system for a tractor.
Background
In the starting state of the tractor, the mechanical movement of the engine and the air inflow can generate strong pneumatic noise, the noise is discharged from the exhaust pipe along with the exhaust gas flow of the engine along with the exhaust gas discharge of the engine, and in order to avoid sound pollution caused by the strong noise discharge, a muffler is usually arranged on the exhaust pipe to reduce the noise discharge.
The existing silencer for the tractor is usually connected with an exhaust inlet and an exhaust outlet by a roundabout air cavity, airflow circulates roundabout in the air cavity to block noise emission, but because the power of the tractor is fixed, if the silencer is additionally arranged on an exhaust pipe, the roundabout air cavity in the silencer generates resistance to airflow circulation to increase exhaust back pressure, the exhaust back pressure is overlarge, the output power of an engine can be greatly reduced, and the output power can be reduced by about 30% through measurement and calculation.
Disclosure of Invention
The invention aims to provide an airflow silencing system for a tractor, which solves the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an air current noise reduction system for tractor, includes exhaust duct, one-level muffler, second grade muffler and amortization management system, one-level muffler and second grade muffler both sides all are connected with the flange, the one-level muffler is in second grade muffler front side, one-level muffler and second grade muffler all are connected with exhaust duct through the flange, one-level muffler rear side is provided with the back lid, logical groove has been run through to back lid both sides lateral wall, the back lid front side is connected with inserts the ring, insert the ring lateral wall and all be provided with the screw thread with one-level muffler rear side inner wall, the back lid forms threaded connection after inserting the one-level muffler through inserting the ring, one-level muffler and back lid all include the shell, the shell inboard is provided with and inhales the cotton pad of sound, it is provided with the inner shell to inhale the cotton pad inboard, inner wall connection of inner shell both sides has the fixed block, one side that the inner shell was kept away from to the fixed block is connected with the separation blade, run through between separation blade and the fixed block one side middle part that the fixed block is kept away from the separation blade is provided with the lantern ring in the penetration, the lantern ring is connected with the traction lever.
Preferably, the baffle is a plurality of, the baffle is symmetrical in setting in inner wall both sides of inner shell, the baffle is inside slope in the inner shell, baffle one side is connected with the fixed block rotation through the round pin axle, the baffle opposite side is connected with the traction lever rotation through the lantern ring.
Preferably, one end of the traction rod, which is close to the rear side of the primary silencer, is vertically connected with a fixing rod, the traction rod is positioned in the middle of one side of the baffle, which is far away from the fixing block, and the traction rod is integrally connected with the lantern ring.
Preferably, the dead lever top is connected with the go-between, the dead lever top is provided with the connecting rod, the connecting rod top is provided with the bull stick, the through-hole has been seted up in the bull stick both ends penetration, the dead lever upper end lateral wall is in the below of logical groove and is provided with the sealed cowling, the bending of connecting rod both ends is annular, the connecting rod both ends respectively run through go-between and through-hole, connecting rod one end is connected with the dead lever rotation through the go-between, the connecting rod other end is connected with the bull stick rotation through the through-hole.
Preferably, the secondary muffler comprises a housing, wherein a spiral blade is arranged inside the housing, and the spiral blade is spirally wound inside the housing.
Preferably, the noise reduction management system includes:
the noise monitoring system is used for monitoring air flow noise data in the front section, the middle section and the tail section of the exhaust pipeline;
and the back pressure adjusting system is used for adjusting the exhaust back pressure of the exhaust pipeline and comprises a motor and a barometer.
Preferably, the inner diameter of the through hole is matched with the outer diameter of the motor shaft end, and the rotating rod is sleeved with the motor shaft end through the through hole.
Preferably, the noise monitoring system includes:
the noise monitoring unit is used for collecting noise data of air flow in each part of the exhaust pipeline;
and the alarm unit is used for alarming when the noise in the exhaust pipeline is abnormal, and reminding an operator of timely maintenance.
Preferably, the noise monitoring unit includes:
the first sound level meter is used for detecting air flow noise data in front of the exhaust pipe, namely the first-stage silencer;
the second sound stage meter is used for detecting the noise data of the air flow in the middle section of the exhaust pipe, namely after being processed by the first-stage silencer;
and the third sound level meter is used for detecting the tail section of the exhaust pipe, namely the airflow noise data processed by the secondary silencer.
Preferably, the alarm unit includes:
the first-stage silencing alarm is used for alarming when the second sound stage meter detects that noise data are abnormal, and reminding an operator of faults of silencing treatment of the first-stage silencer;
and the second-level silencing alarm is used for alarming when the third sound level meter detects that noise data is abnormal, and reminding an operator of the occurrence of faults in silencing treatment of the second-level silencer.
Compared with the prior art, the invention has the beneficial effects that:
this air current noise reduction system for tractor, through setting up noise monitoring system, gather the air current noise data in exhaust duct anterior segment, middle section and the tail end by noise monitoring unit, because middle section, tail end air current is handled through one-level muffler and second grade muffler amortization, therefore anterior segment noise is greater than middle section noise, the middle section is greater than tail end noise, but when noise monitoring unit detects that certain section noise is unusual, report to the police by alarm unit, remind the user that certain section noise detects unusual, find out the muffler of corresponding use breaks down side by side, realize carrying out noise monitoring to exhaust duct, and monitor each section respectively, the convenience is in time troubleshooting fault fixed point when the muffler breaks down.
This air current noise reduction system for tractor through setting up separation blade, traction lever, dead lever, connecting rod and bull stick, drives the bull stick through the motor shaft end and rotates, and the bull stick drives the connecting rod and removes, and the connecting rod pulls the dead lever through the go-between and remove in logical groove, and the dead lever drives the traction lever and removes, makes the traction lever pass through the lantern ring, drives the separation blade and rotates around the round pin axle, enlarges the interval between the separation blade of inner wall both sides of inner shell, reduces separation blade inclination, and the separation blade is to the reduction of the effect of blockking of air current noise this moment for the amortization intensity of one-level muffler reduces, realizes the function of adjusting the amortization intensity of one-level muffler according to the separation blade activity.
This air current noise reduction system for tractor through setting up back pressure governing system, detects exhaust pressure in the exhaust pipe through the barometer, and the size of detected data can embody the size of exhaust back pressure directly perceivedly, and the separation blade is in the in-process that blocks air current noise, and the separation blade inclination is big bigger the greater to the amortization effect of noise better, and the exhaust back pressure that also produces simultaneously is big the bigger, when detecting exhaust pipe anterior segment noise by first sound level meter, according to the size of anterior segment noise, the motor drive in the back pressure governing system adjusts the amortization intensity of one-level muffler to refer to the exhaust back pressure of barometer simultaneously, make amortization intensity governing range remain always under the biggest limit value of exhaust back pressure, avoid amortization intensity to adjust too big condition that causes tractor engine power not enough.
This air current silencing system for tractor through setting up the second grade muffler, through set up the spiral leaf in the inside of second grade muffler, and the spiral leaf spiral arrangement leads to the air current of circulation, makes the air current be the heliciform circulation in the casing, increases the traction force of second grade muffler to the air current in the exhaust duct, and then accelerates the air current circulation, makes up the problem that the exhaust back pressure increase is aroused to the muffler additional on the exhaust duct, balances the output power of engine.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the connection structure of the first muffler and the rear cover of the present invention;
FIG. 3 is a schematic view of the internal structure of the primary muffler of the present invention;
FIG. 4 is a schematic view showing the back pressure regulating state structure of the present invention;
FIG. 5 is a schematic view showing the internal structure of the secondary muffler according to the present invention;
FIG. 6 is a diagram illustrating a structure of a baffle connection according to the present invention;
FIG. 7 is an enlarged schematic view of the structure of portion A in FIG. 3 according to the present invention;
fig. 8 is a block diagram showing a connection structure of the noise reduction management system according to the present invention.
In the figure: 1. an exhaust duct; 2. a primary muffler; 21. a housing; 22. a sound absorbing cotton pad; 23. an inner case; 24. a fixed block; 25. a baffle; 26. a pin shaft; 27. a collar; 28. a traction rod; 29. a fixed rod; 291. a connecting ring; 292. a connecting rod; 293. a rotating rod; 294. a through hole; 295. a sealing cover; 3. a secondary muffler; 31. a housing; 32. spiral leaves; 4. a silencing management system; 41. a noise monitoring system; 411. a noise monitoring unit; 4111. a first sound level meter; 4112. a second sound stage meter; 4113. a third sound level meter; 412. an alarm unit; 4121. a primary silencing alarm; 4122. a secondary silencing alarm; 42. a backpressure regulating system; 421. a motor; 422. an air pressure gauge; 5. a flange; 6. a rear cover; 61. a through groove; 7. inserting a ring; 8. and (5) screw threads.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 8, the air flow silencing system for the tractor of the embodiment comprises an exhaust pipeline 1, a primary silencer 2, a secondary silencer 3 and a silencing management system 4, wherein two sides of the primary silencer 2 and the secondary silencer 3 are respectively connected with a flange 5, the primary silencer 2 and the secondary silencer 3 are respectively and integrally connected with the flange 5, the primary silencer 2 is positioned at the front side of the secondary silencer 3, so that air flow exhausted by an engine sequentially passes through the primary silencer 2 and the secondary silencer 3 to carry out secondary silencing treatment, the primary silencer 2 and the secondary silencer 3 are respectively connected with the exhaust pipeline 1 through the flange 5, a plurality of bolts are connected on the flange 5 in a penetrating way to realize the sealing connection between the primary silencer 2 and the secondary silencer 3 and the exhaust pipeline 1, a rear cover 6 is arranged at the rear side of the primary silencer 2, through grooves 61 are formed in the side walls at the two sides of the rear cover 6 in a penetrating way, the through groove 61 penetrates through the side wall of the rear cover 6 to provide space for the fixed rod 29 and the connecting rod 292 to move, the front side of the rear cover 6 is connected with the insert ring 7, the insert ring 7 is annular, the insert ring 7 is integrally connected with the rear cover 6, the outer side wall of the insert ring 7 and the inner wall of the rear side of the primary silencer 2 are both provided with threads 8, the rear cover 6 is inserted into the primary silencer 2 through the insert ring 7 to form threaded connection, the detachability of the rear cover 6 is realized, the rear cover 6 is convenient to detach and maintain the inside of the primary silencer 2, the primary silencer 2 and the rear cover 6 both comprise an outer shell 21, a sound-absorbing cotton pad 22 is arranged on the inner side of the outer shell 21, the sound-absorbing cotton pad 22 is made of sound-absorbing cotton and used for absorbing noise in air flow, an inner shell 23 is arranged on the inner side of the sound-absorbing cotton pad 22, the outer shell 21 is integrally connected with the inner shell 23, a plurality of small holes are formed in a penetrating way on the inner shell 23 of the primary silencer 2 and the rear cover 6 and the inner shell 23 for increasing the roughness of the inner wall of the inner shell 23, the effect of noise reduction and noise reduction is achieved, fixed blocks 24 are connected to inner walls of two sides of an inner shell 23, the fixed blocks 24 are welded with the inner walls of the inner shell 23, a baffle 25 is connected to one side, away from the inner shell 23, of the fixed blocks 24, a pin shaft 26 penetrates through the baffle 25 and the fixed blocks 24, the pin shaft 26 achieves rotary connection of the baffle 25 and the fixed blocks 24, a lantern ring 27 penetrates through the middle of one side, away from the fixed blocks 24, of the baffle 25, a traction rod 28 is connected to the side wall of the lantern ring 27, and the traction rod 28 is connected with the baffle 25 through the lantern ring 27.
Specifically, the number of the baffle plates 25 is a plurality, the baffle plates 25 are symmetrically arranged on two sides of the inner wall of the inner shell 23, the baffle plates 25 incline in the inner shell 23, air flow flowing in the inner shell 23 is blocked through the inclination of the baffle plates 25, noise flowing in the air flow is blocked, the greater the inclination degree of the baffle plates 25 is, the better the noise reduction effect of noise is, the greater the exhaust back pressure generated simultaneously is, one side of the baffle plates 25 is rotationally connected with the fixed block 24 through the pin shafts 26, the baffle plates 25 can rotate around the pin shafts 26 relative to the fixed block 24, the other side of the baffle plates 25 is rotationally connected with the traction rod 28 through the lantern rings 27, the traction rod 28 applies a pulling force to one side of the baffle plates 25 through the lantern rings 27 by transversely pulling the traction rod 28, the baffle plates 25 can be driven to rotate around the pin shafts 26, the inclination angle of the baffle plates 25 is changed, the function of adjusting the noise reduction strength of the primary muffler 2 is realized according to the activity of the baffle plates 25, the baffle plates 25 are rectangular plate-shaped, and the baffle plates 25 can also be arc-shaped in other embodiments.
Further, one end of the traction rod 28, which is close to the rear side of the primary muffler 2, is vertically connected with a fixing rod 29, the fixing rod 29 is vertically and fixedly connected with the traction rod 28, the traction rod 28 is positioned in the middle of one side of the baffle 25, which is far away from the fixing block 24, the traction rod 28 is integrally connected with the sleeve ring 27, the side wall of the sleeve ring 27 is connected with the traction rod 28, and the sleeve ring 27 penetrates through the middle of one side of the baffle 25, so that the traction ring can rotate relative to the baffle 25 through the sleeve ring 27, and when the traction rod 28 moves transversely, the baffle 25 moves in an arc mode around the pin shaft 26.
Further, the top of the fixing rod 29 is connected with a connecting ring 291, the connecting ring 291 is semicircular, the connecting ring 291 is fixed at one end of the fixing rod 29, a connecting rod 292 is arranged above the fixing rod 29, a rotating rod 293 is arranged above the connecting rod 292, through holes 294 are formed in the two ends of the rotating rod 293 in a penetrating mode, the connecting rod 292 is used for connecting the fixing rod 29 and the rotating rod 293, a sealing cover 295 is arranged below the through groove 61 on the outer side wall of the upper end of the fixing rod 29, the sealing cover 295 is made of rubber, the sealing cover 295 is in a conical shape with the hollow inside, the sealing cover 295 is connected with the side wall of the fixing rod 29 and is mounted on the inner wall of the inner shell 23, the through groove 61 is sealed, the air leakage of the through groove 61 is avoided, the sealing cover 295 made of rubber can be pulled outwards, the fixing rod 29 can conveniently move in the through groove 61, the two ends of the connecting rod 292 are bent to be annular, the two ends of the connecting rod 292 respectively penetrate through the connecting ring 291 and the through holes 294, one end of the connecting rod 292 is rotationally connected with the fixing rod 29 through the connecting ring 291, the connecting rod 292, the other end of the connecting rod 292 is rotationally connected with the rotating rod 293 through the through holes 294 and the rotating rod 293, the connecting rod 292, and the sealing cover 293, and the arc-shaped 293 are adapted to the movement of the fixing rod 29.
Further, the secondary muffler 3 includes casing 31, and casing 31 inside is provided with spiral leaf 32, and spiral leaf 32 is the spiral in casing 31 inside and encircles, and spiral leaf 32 spiral arrangement leads the air current of circulation, makes the air current be the heliciform circulation in casing 31, increases the traction force of secondary muffler 3 to the air current in exhaust duct 1, and then accelerates the air current circulation, makes up to install the muffler additional on the exhaust duct 1 and arouses the problem that exhaust back pressure increases, balances the output power of engine.
Further, the noise reduction management system 4 includes:
the noise monitoring system 41 is used for monitoring air flow noise data in the front section, the middle section and the tail section of the exhaust pipeline 1;
the back pressure regulating system 42 is used for regulating the exhaust back pressure of the exhaust pipeline 1, the back pressure regulating system 42 comprises a motor 421 and a barometer 422, the motor 421 is essentially a motor with a forward and backward rotation circuit, the barometer 422 is arranged at the front section of the exhaust pipeline 1, the exhaust pressure in the exhaust pipeline 1 is detected through the barometer 422, the detected data can intuitively reflect the size of the exhaust back pressure, the motor 421 in the back pressure regulating system 42 is used for driving and regulating the silencing strength of the primary silencer 2 according to the size of the noise at the front section, and meanwhile, the exhaust back pressure of the barometer 422 is referred to, so that the silencing strength regulating range is always kept below the maximum limit value of the exhaust back pressure, and the condition that the power of a tractor engine is insufficient due to overlarge silencing strength regulation is avoided;
the data monitored by the noise monitoring system 41 is uploaded to the silencing management system 4 in real time, and the back pressure regulating system 42 system receives the instruction of the silencing management system 4 as an execution end.
Further, the inner diameter of the through hole 294 is matched with the outer diameter of the shaft end of the motor 421, the rotating rod 293 is sleeved with the shaft end of the motor 421 through the through hole 294, the motor 421 drives the rotating rod 293 to rotate through the shaft end of the motor 421 when being started, and the rotating rod 293 rotates around the shaft end of the motor 421 to pull the connecting rod 292 to move to serve as a main driving force for adjusting the inclination angle of the baffle 25.
Further, the noise monitoring system 41 includes:
the noise monitoring unit 411 is used for collecting noise data of air flows in the exhaust pipeline 1, the noise monitoring unit 411 is composed of three sound level meters, the sound level meters are of AWA5561-W type, sensors of the sound level meters penetrate through the side wall of the exhaust pipeline 1 and are inserted into the inner cavity of the exhaust pipeline 1, and the insertion opening is sealed through a sealing piece;
the alarm unit 412 is used for alarming when the noise in the exhaust pipeline 1 is abnormal, and reminding an operator of timely maintenance;
when the noise monitoring unit 411 detects that a certain section of noise is abnormal, the alarm unit 412 alarms to remind a user that a certain section of noise is abnormal, and the corresponding silencer is detected to be faulty.
Further, the noise monitoring unit 411 includes:
the first sound level meter 4111 is configured to detect the noise data of the air flow in the front section of the exhaust pipe, that is, before the first-stage muffler 2, and determine whether the internal operation of the engine is normal according to the value detected by the first sound level meter 4111, and simultaneously, according to the noise level of the front section of the exhaust pipe 1 detected by the first sound level meter 4111, correspondingly adjust the noise reduction intensity of the first-stage muffler 2 by driving the motor 421 in the back pressure adjusting system 42, so as to avoid the problems of excessive exhaust back pressure and consumption of additional power of the engine due to low noise and high noise reduction intensity;
the second sound stage meter 4112 is configured to detect the middle section of the exhaust pipe, that is, the airflow noise data processed by the first-stage muffler 2, and trigger the alarm unit 412 to alarm when the second sound stage meter 4112 detects that the middle section noise is abnormal, so as to remind the user that the first-stage muffler 2 is silencing and processing the fault;
the third sound level meter 4113 is configured to detect the tail section of the exhaust pipe, that is, the noise data of the air flow processed by the second-stage muffler 3, and trigger the alarm unit 412 to alarm when the third sound level meter 4113 detects that the noise of the tail section is abnormal, so as to remind the user of the noise reduction processing failure of the second-stage muffler 3;
after the noise in the normal airflow is sequentially processed by the primary silencer 2 and the secondary silencer 3, the noise is weakened gradually, the noise values measured by the first sound level meter 4111, the second sound level meter 4112 and the third sound level meter 4113 are set to be a1, a2 and a3, and a1 is more than a2 and more than a3, but when a2 is more than or equal to a1, the problem that the primary silencer 2 fails and the noise reduction failure exists is solved, and when a3 is more than or equal to a2, the problem that the secondary silencer 3 fails and the noise reduction failure exists is solved.
Further, the alarm unit 412 includes:
the primary silencing alarm 4121 is used for alarming when the second sound stage meter 4112 detects that noise data is abnormal, and reminding an operator that the silencing treatment of the primary silencer 2 fails;
the secondary silencing alarm 4122 is used for alarming when the third sound level meter 4113 detects that noise data is abnormal, and reminding an operator of the occurrence of faults in silencing treatment of the secondary silencer 3;
the primary silencing alarm 4121 and the secondary silencing alarm 4122 are respectively a buzzer alarm and are combined with the warning popup window to remind a tractor operator, the primary silencing alarm 4121 and the secondary silencing alarm 4122 respectively correspond to the primary silencer 2 and the secondary silencer 3 to give an alarm, so that when the silencer breaks down, a fault fixed point can be conveniently and timely checked, and the accurate maintenance of the operator is facilitated.
The application method of the embodiment is as follows: under the condition that a user actually uses the tractor, the tractor exhausts air in the exhaust pipeline 1, air flow carries noise to circulate in the exhaust pipeline 1, the air flow firstly enters the primary silencer 2, the noise is blocked by the baffle plates 25 on the inner wall of the inner shell 23, the roughness of the inner wall of the inner shell 23 is increased by the small holes formed on the inner wall of the inner shell 23, then the noise is absorbed by the sound absorbing cotton pads 22 on the outer side of the inner shell 23, the air flow is primarily denoised, then enters the secondary silencer 3, the spiral blades 32 are arranged in a spiral way to guide the circulated air flow, so that the air flow circulates in a spiral way in the shell 31, the traction force of the secondary silencer 3 to the air flow in the exhaust pipeline 1 is increased, the air flow is accelerated, and simultaneously, the air flow is secondarily denoised, then the air flow is discharged from the tail section of the exhaust pipeline 1, and the air flow circulates in the exhaust pipeline 1, the first sound level meter 4111, the second sound level meter 4112 and the third sound level meter 4113 respectively collect the noise data of the air flow in the front section, the middle section and the tail section of the exhaust pipeline 1, the noise data is uploaded to the noise reduction management system 4 for storage, when the second sound level meter 4112 detects the noise abnormality of the middle section, the first sound level meter 4121 is triggered to alarm, when the third sound level meter 4113 detects the noise abnormality of the tail section, the second sound level meter 4122 is triggered to alarm, the user is reminded of the noise of the first sound level meter 4111 or the second sound level meter 3 to process faults, the first sound level meter 4111 detects the noise of the air flow exhausted by the engine, when the noise value reaches a preset value, the back pressure regulating system 42 controls the motor 421 to start, the shaft end of the motor 421 drives the rotary rod 293 to rotate, the rotary rod 293 drives the connecting rod 292 to move, the connecting rod 292 drags the fixed rod 29 to move in the through the connecting ring 291, the fixed rod 29 drives the traction rod 28 to move through the connecting ring 291, the traction rod 28 moves through the sleeve ring 27, the baffle 25 is driven to rotate around the pin shaft 26, the inclination angle of the baffle 25 is adjusted, the silencing strength of the primary silencer 2 is adjusted, at the moment, the exhaust back pressure in the exhaust pipeline 1 is increased along with the increase of the silencing strength, the exhaust back pressure value detected by the barometer 422 is used as a reference, the silencing strength adjusting range is always kept below the maximum limit value of the exhaust back pressure, and the condition that the power of a tractor engine is insufficient due to overlarge silencing strength adjustment is avoided.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an air current amortization system for tractor, includes exhaust duct (1), one-level muffler (2), second grade muffler (3) and amortization management system (4), its characterized in that: the two sides of the primary silencer (2) and the two sides of the secondary silencer (3) are respectively connected with a flange (5), the primary silencer (2) is positioned at the front side of the secondary silencer (3), the primary silencer (2) and the secondary silencer (3) are respectively connected with the exhaust pipeline (1) through the flanges (5), the rear side of the primary silencer (2) is provided with a rear cover (6), the side walls at the two sides of the rear cover (6) are penetrated and provided with through grooves (61), the front side of the rear cover (6) is connected with an inserting ring (7), the outer side wall of the inserting ring (7) and the inner wall at the rear side of the primary silencer (2) are respectively provided with threads (8), the rear cover (6) is inserted into the first-stage silencer (2) through the inserting ring (7) to form threaded connection, the first-stage silencer (2) and the rear cover (6) both comprise an outer shell (21), the inner side of the outer shell (21) is provided with a sound-absorbing cotton pad (22), the inner side of the sound-absorbing cotton pad (22) is provided with an inner shell (23), the inner walls of the two sides of the inner shell (23) are connected with fixing blocks (24), one side, far away from the inner shell (23), of the fixing blocks (24) is connected with a baffle (25), a pin shaft (26) is arranged between the baffle (25) and the fixing blocks (24) in a penetrating mode, the middle part of one side of separation blade (25) far away from fixed block (24) runs through and is provided with lantern ring (27), lantern ring (27) lateral wall is connected with traction lever (28).
2. The air flow noise reducing system for a tractor as defined by claim 1, wherein: the utility model discloses a motor vehicle, including inner shell (23), baffle (25), fixed block (24) are connected through round pin axle (26), baffle (25) are a plurality of, baffle (25) are symmetrical setting in inner wall both sides of inner shell (23), baffle (25) are inside slope in inner shell (23), baffle (25) one side is connected with fixed block (24) rotation through round pin axle (26), baffle (25) opposite side is connected with traction lever (28) rotation through lantern ring (27).
3. The air flow noise reducing system for a tractor as defined by claim 1, wherein: one end of the traction rod (28) close to the rear side of the primary silencer (2) is vertically connected with a fixing rod (29), the traction rod (28) is positioned in the middle of one side of the baffle piece (25) away from the fixing block (24), and the traction rod (28) is integrally connected with the lantern ring (27).
4. A tractor air flow noise abatement system as defined by claim 3 wherein: the utility model discloses a connecting rod, including dead lever (29), connecting rod (292) top is provided with bull stick (293), through-hole (294) have been seted up in bull stick (293) both ends run through, the below that dead lever (29) upper end lateral wall is in logical groove (61) is provided with sealed cowling (295), connecting rod (292) both ends are crooked to be annular, connecting rod (292) both ends run through connecting ring (291) and through-hole (294) respectively, connecting rod (292) one end is connected with dead lever (29) rotation through connecting ring (291), the connecting rod (292) other end is connected with bull stick (293) rotation through-hole (294).
5. The air flow noise reducing system for a tractor as defined by claim 1, wherein: the secondary silencer (3) comprises a shell (31), wherein a spiral blade (32) is arranged inside the shell (31), and the spiral blade (32) spirally surrounds the inside of the shell (31).
6. The air flow noise reducing system for a tractor as defined by claim 1, wherein: the noise reduction management system (4) includes:
the noise monitoring system (41) is used for monitoring airflow noise data in the front section, the middle section and the tail section of the exhaust pipeline (1);
and the back pressure regulating system (42) is used for regulating the exhaust back pressure of the exhaust pipeline (1), and the back pressure regulating system (42) comprises a motor (421) and a barometer (422).
7. The air flow noise reducing system for a tractor as defined by claim 4 wherein: the inner diameter of the through hole (294) is matched with the outer diameter of the shaft end of the motor (421), and the rotating rod (293) is sleeved with the shaft end of the motor (421) through the through hole (294).
8. The air flow noise reducing system for a tractor as defined by claim 6, wherein: the noise monitoring system (41) comprises:
a noise monitoring unit (411) for collecting noise data of the air flow inside the exhaust duct (1) at all places;
and the alarm unit (412) is used for alarming when the noise in the exhaust pipeline (1) is abnormal, and reminding an operator of timely maintenance.
9. The air flow noise reducing system for a tractor as defined by claim 8 wherein: the noise monitoring unit (411) includes:
a first sound level meter (4111) for detecting air flow noise data in front of the exhaust pipe, i.e., in front of the primary muffler (2);
the second sound stage meter (4112) is used for detecting the noise data of the air flow in the middle section of the exhaust pipe, namely after being processed by the first-stage silencer (2);
and a third sound level meter (4113) for detecting the tail section of the exhaust pipe, namely the airflow noise data processed by the secondary muffler (3).
10. The air flow noise reducing system for a tractor as defined by claim 8 wherein: the alarm unit (412) comprises:
the first-stage silencing alarm (4121) is used for alarming when the second sound stage meter (4112) detects that noise data are abnormal and reminding an operator of faults in silencing treatment of the first-stage silencer (2);
and the secondary silencing alarm (4122) is used for alarming when the third sound level meter (4113) detects that noise data is abnormal, and reminding an operator of the occurrence of faults in silencing treatment of the secondary silencer (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310686707.1A CN116428043B (en) | 2023-06-12 | 2023-06-12 | Air flow silencing system for tractor |
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|---|---|---|---|
| CN202310686707.1A CN116428043B (en) | 2023-06-12 | 2023-06-12 | Air flow silencing system for tractor |
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| CN116428043B CN116428043B (en) | 2023-08-18 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001355426A (en) * | 2000-06-09 | 2001-12-26 | Yanmar Diesel Engine Co Ltd | Active muffler |
| KR200287758Y1 (en) * | 2002-02-28 | 2002-09-05 | 김영태 | The car submuffler |
| KR20050030405A (en) * | 2003-09-26 | 2005-03-30 | 현대자동차주식회사 | Exhaust pressure control device of muffler |
| US20130233269A1 (en) * | 2012-03-06 | 2013-09-12 | KATCON USA, Inc. | Exhaust Valve Assembly |
| CN108894863A (en) * | 2018-07-11 | 2018-11-27 | 合肥连森裕腾新材料科技开发有限公司 | A kind of automobile pipe fitting structure with noise reduction degassing function |
| CN210509333U (en) * | 2019-10-09 | 2020-05-12 | 无锡能电动力科技有限公司 | Silencer of generator set |
| CN115596543A (en) * | 2022-09-20 | 2023-01-13 | 安徽赛腾智能制造有限公司（Cn） | New energy automobile exhaust pipe assembly with energy-conserving purification effect |
-
2023
- 2023-06-12 CN CN202310686707.1A patent/CN116428043B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001355426A (en) * | 2000-06-09 | 2001-12-26 | Yanmar Diesel Engine Co Ltd | Active muffler |
| KR200287758Y1 (en) * | 2002-02-28 | 2002-09-05 | 김영태 | The car submuffler |
| KR20050030405A (en) * | 2003-09-26 | 2005-03-30 | 현대자동차주식회사 | Exhaust pressure control device of muffler |
| US20130233269A1 (en) * | 2012-03-06 | 2013-09-12 | KATCON USA, Inc. | Exhaust Valve Assembly |
| CN108894863A (en) * | 2018-07-11 | 2018-11-27 | 合肥连森裕腾新材料科技开发有限公司 | A kind of automobile pipe fitting structure with noise reduction degassing function |
| CN210509333U (en) * | 2019-10-09 | 2020-05-12 | 无锡能电动力科技有限公司 | Silencer of generator set |
| CN115596543A (en) * | 2022-09-20 | 2023-01-13 | 安徽赛腾智能制造有限公司（Cn） | New energy automobile exhaust pipe assembly with energy-conserving purification effect |
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|---|---|
| CN116428043B (en) | 2023-08-18 |
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