CN110031239A - A kind of adjustable testing stand for automotive muffler performance test - Google Patents
A kind of adjustable testing stand for automotive muffler performance test Download PDFInfo
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- CN110031239A CN110031239A CN201910326384.9A CN201910326384A CN110031239A CN 110031239 A CN110031239 A CN 110031239A CN 201910326384 A CN201910326384 A CN 201910326384A CN 110031239 A CN110031239 A CN 110031239A
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- 238000012360 testing method Methods 0.000 title claims abstract description 54
- 238000011056 performance test Methods 0.000 title claims abstract description 12
- 230000003584 silencer Effects 0.000 claims abstract description 90
- 230000007246 mechanism Effects 0.000 claims abstract description 82
- 239000010985 leather Substances 0.000 claims description 26
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 235000004443 Ricinus communis Nutrition 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 230000003028 elevating effect Effects 0.000 claims description 6
- 238000011068 loading method Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 3
- 230000008030 elimination Effects 0.000 claims description 2
- 238000003379 elimination reaction Methods 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 25
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000002474 experimental method Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000011089 mechanical engineering Methods 0.000 abstract description 2
- 238000011160 research Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 22
- 230000033001 locomotion Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 210000003464 cuspid Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A kind of adjustable test relatives of Taiwan compatriots living on the Mainland mechanical engineering technical field for automotive muffler performance test, the present invention uses reasonable method and mechanism, the high efficiency of guarantee test does not have to build testing stand again by the test that different size exemplars may be implemented in lifting mechanism I, Mobile Slide J, running fix clamp system K, platform rotating mechanism L and hoistable platform M；Platform rotating mechanism L makes the measurement transmitting loss of two sound source methods more efficient；The silencer gas outlet detection with bent angle is given simultaneously and is designed, the silencer gas outlet test problems with bent angle are solved by tailstock rotating mechanism Q.The present invention detects silencer experiment, and more convenient, efficient, experimentation is reliable and stable, it is able to achieve the detection of different size, the Muffler Performance index of shape, test process is convenient and efficient, reduces research cost and unnecessary time, also can provide reference for the detection production line of silencer.
Description
Technical field
The invention belongs to mechanical engineering technical fields, and in particular to a kind of adjustable examination for automotive muffler performance test
Platform is tested, with the exhaust condition under simulated engine difference working condition and data acquisition can be carried out.
Background technique
Important component of the automotive muffler as automobile, so that the noise that automobile engine generates obtains a degree of drop
It is low.It is tested when studying and designing silencer, can be reached to test the performance indexes of newly developed silencer
To design requirement, although there are many simulation softwares now, many boundary conditions and reality still have certain discrepancy, so
Still it needs to carry out experimental study.There are many instrument that the performance study of silencer is related to, including various sensors, various tests
The requirement that principle and method and tail end absorb sound entirely.Make researcher very time-consuming laborious in the installation and building of testing stand, and
And built again again after measurement, efficiency is very low.The present invention uses the high efficiency of reasonable method and mechanism guarantee test, can
Do not have to build testing stand again to realize the test of various sizes of exemplar, and part-structure realizes automation, so that examination
It is convenient and efficient to test process, it is reliable and stable, research cost and the waste of unnecessary time are reduced, also the detection for silencer production is raw
Producing line provides certain reference.
Summary of the invention
In order to realize requirements above, experiment installment work platform time and cost are reduced, the purpose of the present invention is to provide one
The testing stand of the Muffler Performance test of kind high degree of automation, high reliablity.
The present invention shows that touch panel C, computer D, signal receive by anechoic room A, pressure-control valve B, pressure and temp
Device E, divide air-flow and noise-producing equipment I, silencer mounting platform II and adjustable tailstock mechanism III composition, wherein echoless
The affixed acoustic board 90 of room A inner wall；Pressure-control valve B is fixed in anechoic room A right hand top；Pressure and temp shows touch panel C
It is fixed in the front anechoic room A right upper portion；Computer D, signal receiver E, the air-flow of air-flow and noise-producing equipment I is divided to send out
Generating apparatus F is placed on outside anechoic room A；The front end signal receiver E connects the sensor a17 of silencer mounting platform II, passes
Sensor b18, sensor c20 and sensor d21；The rear end signal receiver E connects computer D；Divide air-flow and noise-producing equipment I
Noise-producing equipment G and steady air current and temperature control equipment H be mounted on inside anechoic room A；Air-flow and noise is divided to occur
The pipeline a6 of device I passes through wall on the left of the room anechoic room A and is connected to steady air current with temperature control equipment H left side wall, air-flow
Stabilization is affixed with the bottom bracket b15 of temperature control equipment H and the lower plate 96 of adjustable tailstock mechanism III；Noise-producing equipment
G is fixed on the left of steady air current and temperature control equipment H, is connected to steady air current with temperature control equipment H by rectangular opening 8；
Divide the pipeline b12 of air-flow and noise-producing equipment I to be connected to steady air current with temperature control H right side wall, air-flow and noise is divided to send out
The middle and lower part pipeline b12 of generating apparatus I and strut 13 are affixed, and the lower plate 96 of 13 bottom of strut and adjustable tailstock mechanism III is solid
Connect, divide the pipeline b12 right end of air-flow and noise-producing equipment I through leather hose b22 be mounted on disappearing on running fix clamp system K
19 air inlet of sound device is affixed；The lifting mechanism I upper end single pole cylinder rod 67 of silencer mounting platform II is fixed in silencer installation
On the connecting plate b59 of platform II, the lifting mechanism I lower end of silencer mounting platform II is solid by connecting plate a57 and lower plate 96
It connects；It is affixed through leather hose b22 and 19 gas outlet of silencer on the left of pipeline c74 in adjustable tailstock mechanism III, tailstock mechanism is adjusted
It is affixed through workbench 83 and Mobile Slide N below pipeline c74 in III；It is affixed with hoistable platform M below Mobile Slide N；Clamping machine
Tool hand O is placed on the right side of Mobile Slide N, and 96 top of lower plate of tailstock mechanism III is adjusted, moves；Floor bracket P is fixed in
96 lower section of lower plate of adjustable tailstock mechanism III；Tailstock rotating mechanism Q is connect through idler wheel 87 with upper end hoistable platform M, tailstock
The lower end rotating mechanism Q is affixed by track support 81 and the lower plate 96 of adjustable tailstock mechanism III.
Described point of air-flow and noise-producing equipment I are by air-stream generating device F, noise-producing equipment G and steady air current and temperature
Spend control device H composition, wherein air-stream generating device F is by bracket a1, mounting plate a2, blower 3, pipe joint 4, frequency control
Device 5 and pipeline a6 composition, the bottom bracket a1 are connect with ground, and blower 3 is fixed on the mounting plate a2 above bracket a1, blower 3
With variable-frequency governor 5, the outlet of blower 3 is connect through pipe joint 4 with the entrance of pipeline a6, and the outlet of pipeline a6 and air-flow are steady
Fixed to connect with the front temperature control equipment H, steady air current and the rear portion temperature control equipment H and noise-producing equipment G right end are affixed；
Steady air current and temperature control equipment H are by cover board 7, rectangular opening 8, rectangular clapboard 9, heating device 10, orifice flowmeter 11, pipeline
B12, strut 13, mounting plate b14 and bracket b15 composition, steady air current and the rear portion temperature control equipment H are provided with rectangular opening 8, air-flow
It is stable to have rectangular clapboard 9 with the middle section temperature control equipment H, round sieve is had on rectangular clapboard 9, is pacified on rectangular clapboard 9
Equipped with heating device 10, steady air current and temperature control equipment H upper cover plate 7 are detachable, and orifice flowmeter 11 is fixed in pipeline
The nearly right end of b12, strut 13 are fixed in lower section in the middle part of pipeline b12, and steady air current and temperature control equipment H are fixed in bracket b15
Mounting plate b14 on, pipeline b12 right end is connected to steady air current with the rear left part of temperature control equipment H；Noise-producing equipment G
It is fixed on the left of steady air current and temperature control equipment H, is connected to steady air current with temperature control equipment H by rectangular opening 8.
The silencer mounting platform II is revolved by lifting mechanism I, Mobile Slide J, running fix clamp system K and platform
Rotation mechanism L composition, wherein lifting mechanism I is by guide rod 56, connecting plate a57, pilot sleeve 58, connecting plate b59, single pole cylinder
Bar 67, motor 68, single pole cylinder 69, hole group a70, hole group b71, insert 72 and centre bore 73 form, and single pole cylinder 69 is affixed
Below connecting plate a57, single pole cylinder rod 67 passes through connecting plate a57, and 56 top of guide rod is affixed with connecting plate b59, guiding
58 upper end of sleeve and connecting plate b59 are affixed, and lower end and connecting plate a57 are affixed, there is insert 72 and guide rod 56 on connecting plate a57
Hole group a70, the hole group b71 of single pole cylinder rod (67), centre bore 73 form；Mobile Slide J is by mounting plate g53, ball-screw
A54, stepper motor a55 composition；Mounting plate g53 and top mounting plate e47 are affixed, stepper motor a55 connection ball-screw a54；
Mobile Slide J is fixed in below running fix clamp system K through mounting plate g53；Running fix clamp system K is by leather hose a16, biography
Sensor a17, sensing b18, silencer 19, sensor c20, sensor d21, leather hose b22, testing tube a23, pipe fitting a24, U-shaped
Pipe 25, pipe fitting b26, clip 27, testing tube b28, bracket c29, bolt a30, bolt b31, support a32, oil cylinder a33, oil cylinder
B34, V-block a35, sliding rail a36, sliding block a37, support b38, oil cylinder c39, V-block b40, double-rod cylinder 41, double-rod cylinder bar
42, mounting plate c43, mounting plate d44, sliding rail b45, sliding block b46, mounting plate e47, clamping cylinder 48, mounting plate f49, oil cylinder
D50, rectangular recess a51 and rectangular recess b52 composition, pipeline b12 are connect with 19 air inlet of silencer through leather hose a16；Silencer
19 gas outlets are through leather hose b22 connecting pipe c74；Sensor a17, sensor b18, testing tube are installed at 19 air inlet of silencer
Sensor c20, sensor d21, testing tube b28 are installed in a23,19 exit of silencer；Testing tube a23 and testing tube b28 are another
End connects U-tube 25 with pipe fitting b26 through pipe fitting a24 respectively, and U-tube 25 is fixed on clip 27, clip 27 and bracket c29
Affixed, bracket c29 is fixed on mounting plate e47 through bolt a30, bolt b31, and silencer 19 is determined by V-block a35 and V-block b40
Position,；The lower end V-block a35 and oil cylinder a33 and oil cylinder b34 are affixed, and the rectangle that oil cylinder a33 and oil cylinder b34 are fixed in support a32 is recessed
In slot a51；V-block b40 and oil cylinder c39 are affixed, and oil cylinder c39 is fixed in the rectangular recess b52 of support b38, support b38 and cunning
Block a37, sliding block b46 are affixed, and sliding block a37 and sliding rail a36 cooperation, sliding block b46 and sliding rail b45 cooperate, the right side support b38 and double rod
Cylinder 41 is affixed, and double-rod cylinder bar 42 is connect with mounting plate c43, and mounting plate c43 is fixed on mounting plate d44, mounting plate d44 with
Mounting plate e47 is affixed, and clamping cylinder 48 is mounted on mounting plate f49, and mounting plate f49 and oil cylinder d50 are affixed, oil cylinder d50 and peace
Loading board e47 is affixed, and mounting plate e47 and mounting plate g53 are affixed, and mounting plate g53 and Mobile Slide J are affixed；Platform rotating mechanism L by
Connecting plate c60, fixed block 61, bolt 62, buffer limit pin 63, mounting blocks 64, pinion gear 65, gear wheel 66, motor 68 form,
Motor 68 is fixed on connecting plate b59 in platform rotating mechanism L；Pinion gear 65 is engaged with gear wheel 66；Gear wheel 66 with connect
Plate c60 is affixed；Fixed block 61 is fixed in the bottom connecting plate c60, mounting blocks 64 are fixed on mounting plate b59, by bolt c62
It is mounted on mounting blocks 64 with buffer limit pin 63, bolt c62, buffer limit pin 63, mounting blocks 64 are left and right symmetrically arranged big
66 two sides of gear are fixed in the bottom connecting plate c60；Platform rotating mechanism L is fixed in below Mobile Slide J through connecting plate c60.
The adjustable tailstock mechanism III is by hoistable platform M, Mobile Slide N, clamping manipulator O, floor bracket P and tail
Seat rotating mechanism Q composition, wherein hoistable platform M is by upper plate 76, hydraulic cylinder 77, slide plate 78, pedestal 79, idler wheel 87, link block 88
It is formed with connecting plate d89,76 lower end of upper plate and hydraulic cylinder 77 are hinged, and 77 lower end of hydraulic cylinder and slide plate 78 are affixed, slide plate 78 and bottom
Seat 79 is cooperatively connected, and 79 lower end of pedestal and connecting plate d89 are affixed, hinged with link block 88 below connecting plate d89, link block 88 and
Idler wheel 87 carries out hingedly, and idler wheel 87 and circular orbit 80 cooperate；Mobile Slide N is by pipeline c74, support c82, workbench 83, peace
Loading board h84, stepper motor b85, ball-screw b86 composition, the outlet of silencer 19 is affixed by leather hose b22 and pipeline c74, pipeline
The lower half portion c74 and support c82 are affixed, and the lower end support c82 and workbench 83 are affixed, and workbench 83 is through mounting plate h84 and lower section
Mobile Slide N is affixed, stepper motor b85 connection ball-screw b86；Clamping manipulator O is by the tail end 75, sensor stand of absorbing sound entirely
91, manipulator head 92, connecting rod a93, connecting rod b94 composition, clamping manipulator O is through connecting rod a93 and connecting rod b94 in vertical
Straight affixed, manipulator head 92 is fixed in connecting rod a93 tail end, and sensor stand 91 is placed on the right side of pipeline c74, sensor stand
91 with the angle α of pipeline c74 right end exit axis be 45 degree, and spacing L is 500mm；Floor bracket P is by castor 95, lower plate
96, embedding groove 97 and rectangular channel 98 form, and lower plate 96 is fixed on floor bracket P, and lower plate 96 is provided with embedding groove 97 and square
Shape slot 98, the lower section floor bracket P is affixed with castor 95, affixed with lower plate 96 above chassis bracket P；Tailstock rotating mechanism Q by
Circular orbit 80, track support 81, idler wheel 87, link block 88, connecting plate d89 composition, the lower section connecting plate d89 are cut with scissors with link block 88
It connects, link block 88 and idler wheel 87 are hinged, and idler wheel 87 and circular orbit 80 are cooperatively connected, 81 top of circular orbit 80 and track support
It is affixed.
Working process and principle of the invention are as follows:
1. powering on, start computer D, anechoic room A is opened, silencer 19 is put by each device preparation
It sets on running fix clamp system K.
2. controlling silencer mounting platform work, 19 air inlet of silencer exceeds the left side V-block a35 a distance, just
In installation leather hose a16, support b38 side-to-side movement is driven by the way that double-rod cylinder bar 42 is flexible, so that V-block b40 or so be driven to transport
It is dynamic, when the variation of 19 length of silencer, is realized by adjusting the position V-block b40 and 19 gas outlet of silencer is positioned；Oil cylinder a33
It is used to control V-block a35 with oil cylinder b34 and moves up and down, 19 air inlet of silencer position on vertical direction；Oil cylinder c39
It is moved up and down for controlling V-block b40,19 gas outlet of silencer position on vertical direction；Rear muffler is completed in positioning
19 are clamped by clamping cylinder 48, and oil cylinder d50 makes clamping cylinder 48 have bigger elevating function, can clamp larger diameter
Silencer；It carries out positioning to silencer 19 to clamp being in order to avoid silencer generates unnecessary vibration noise, so that test
Measurement result is more accurate.
3. lifting mechanism I is started to work, by single pole cylinder rod 67 in pilot sleeve after the completion of the positioning of silencer 19 clamps
It is moved in 58, connecting plate b59 is pushed to drive Mobile Slide J, running fix clamp system K, platform whirler above connecting plate b59
Structure L moves up and down in overall, so that 19 air inlet of silencer is aligned with pipeline b12 vertical direction；Mobile Slide J starts to work, and moves
Dynamic slide unit J drives ball-screw a54 by stepper motor a55, to drive top mounting plate g53 to move forward and backward, so that pipeline
The leather hose a16 installed on b12 and 19 air inlet of silencer is connected；When two sound source methods measure transmitting loss, platform rotating mechanism L
Movement drives pinion gear 65 to rotate by motor 68 through a series of transmission mechanisms, then drives connecting plate c60, then drives and moves above
Dynamic slide unit J, positioning and clamping mechanism K mass motion, after mounting plate rotates 180 degree counterclockwise, bolt c62 prevent fixed block 61 after
Reforwarding is dynamic, so that connecting plate c60 be prevented to continue to rotate, buffer limit pin 63 is worked as a buffer；With should connecting plate c60 it is clockwise
After rotating 180 degree, bolt c62 prevents fixed block 61 from continuing to move, so that connecting plate c60 is prevented to continue to rotate, buffer limit pin
63 work as a buffer.
4. connection lifting mechanism I moves up and down below Mobile Slide N, upper plate 76 is driven to move up and down, so that
Pipeline c74 and the outlet of silencer 19 connect, when occurring importing and exporting not coaxial muffler, without building testing stand again；Work
Mobile Slide N is connected below platform 83, Mobile Slide N drives ball-screw b86 by stepper motor b85, to drive workbench
83 move left and right, and then pipeline c74 is driven to move left and right, to adapt to the length variation of silencer 19, when silencer 19 lengthens, pipe
Road c74 moves right；When silencer length shortens, pipeline c74 is moved to the left；Idler wheel 87 and circular orbit 80 cooperate, in realization
Mechanism is stated to move on circular orbit 80, thus realize when 19 gas outlet of silencer is bent angle with the connection of pipeline c74, with suitable
It should the acoustical behavior measurement with the silencer gas outlet of different cambers.
5. when tail end boundary condition is full sound absorption tail end, by clamping manipulator 0 full sound absorption tail end 75 and pipeline c74
Rear end gas outlet is connected；Clamping manipulator 0 can carry out tail end load more when using double load method measurement transmitting losses
It changes, the connecting rod a93 of clamping manipulator 0, connecting rod b94 can carry out left and right height or shortening and height adjustment, manipulator
Head 92 can realize crawl, clamping with opening and closing.The flexible and rotation that may be implemented between each rod piece of sensor stand 91
Turn.Sensor stand 91 is for measuring 19 insertion loss of silencer.
6. anechoic room A is closed, show that pressure, temperature in anechoic room A is adjusted in touch panel C by pressure and temp
Degree, real-time pressure and temperature display are shown on touch panel C in pressure and temp, and indoor total operating pressure and temperature can be made to protect
Hold it is constant, while guarantee pipeline tail end discharge gas indoor integrated environment will not be impacted；In addition, according to test requirements document,
If it is desired to changing room temperature and pressure, it can show that touch panel C is adjusted by pressure and temp.Anechoic room A inner wall
Acoustic board 90 is installed, guarantees echoless and isolation external sound in anechoic room A.
7. after stablizing, starting air-stream generating device F, blower 3 starts running, blower 3 to pressure, temperature in anechoic room A
It is placed in outside the room anechoic room A in order to avoid its noise generated impacts test, the air-flow of generation enters air-flow through piping a6
Air-flow in stable and temperature control equipment H, steady air current and temperature control equipment H is on rectangular clapboard 9, rectangular clapboard 9
Heating device 10 is installed, air-flow is heated to by difference by the resistance value size that computer D controls the access resistance of heating device 10
Temperature, steady air current and temperature control equipment H upper cover plate 7 are detachable, facilitate inner body installation and maintenance, noise fills
Set G and generate analogue noise, the noise of generation passes through rectangular opening 8, so as to noise-producing equipment G generate analogue noise to forward pass
Broadcast, simulated engine exhaust noise, when blower 3 does not turn, only open noise-producing equipment G, it can be achieved that airless state experiment；
Blower 3 does not turn, and opens noise-producing equipment G, opens simultaneously heating device 10, can carry out when airless temperature to silencer 19
The experiment of the influence of performance；Blower 3 to be opened, this variable of air-flow is introduced, air-flow size is adjustable by variable-frequency governor 5,
Orifice flowmeter 11 is for detecting the flow of pipeline b12 inlet air flow, temperature, pressure and other parameters, and whether detection parameters reach
It is required that numerical value.Air-flow and analogue noise propagate to 19 air inlet of silencer through pipeline b12, propagate by 19 gas outlet of silencer
To pipeline c74, full sound absorption tail end 75 is reached through pipeline c74；Sensor and two testing tubes there are four being filled on silencer 19, four
Sensor other end connection signal receiver E, for measure transmitting loss (herein by taking four-point method as an example, specific experiment method according to
Depending on researcher, depending on interval and installation site are required also according to researcher's specific experiment between sensor)；It surveys
Another section of connection U-tube 25 of test tube is used to measure back pressure.
The beneficial effects of the present invention are: realize that silencer experiment detection is more convenient, efficiently, experimentation is reliable, surely
It is fixed, it is able to achieve the detection of different size, the Muffler Performance index of shape, human and material resources and time cost are low.
Detailed description of the invention
Fig. 1 is the main view of the adjustable testing stand for automotive muffler performance test
Fig. 2 is the schematic diagram of internal structure of the adjustable testing stand for automotive muffler performance test
Fig. 3 is the internal structure axonometric drawing of the adjustable testing stand for automotive muffler performance test
Fig. 4 is the schematic diagram of point air-flow and noise-producing equipment I
Fig. 5 is the schematic diagram (one) of Mobile Slide J and running fix clamp system K
Fig. 6 is the schematic diagram (two) of Mobile Slide J and running fix clamp system K
Fig. 7 is the schematic diagram of U-tube mounting structure
Fig. 8 is the schematic diagram of U-tube supporting structure
Fig. 9 is the structural schematic diagram of running fix clamp system K
Figure 10 is clamping cylinder structural schematic diagram
Figure 11 is the schematic diagram (one) of rectangular recess structure
Figure 12 is the schematic diagram (two) of rectangular recess structure
Figure 13 is the schematic diagram of Mobile Slide J structure
Figure 14 is the schematic diagram (one) of silencer mounting platform choosing rotation L and lifting machine I
Figure 15 is the schematic diagram (two) of silencer mounting platform choosing rotation L and lifting machine I
Figure 16 is the schematic diagram of connecting plate a structure
Figure 17 is the schematic diagram (one) of tailstock movement mechanism
Figure 18 is the schematic diagram (two) of tailstock movement mechanism
Figure 19 is the schematic diagram of acoustic board structure
Figure 20 is the schematic diagram of sensor support structure
Figure 21 is the schematic diagram of clamping manipulator O structure
Figure 22 is floor bracket P scheme of installation
Figure 23 is the schematic diagram of lower floor structure
Figure 24 is the schematic diagram of floor bracket structure
Figure 25 is that silencer mounting platform tailstock rotates rear axle mapping
Figure 26 is the postrotational top view of silencer mounting platform tailstock
Figure 27 is applied to test principle figure when being tested with impulse method
Figure 28 is applied to experimental principle figure when being tested with sound wave decomposition method
Figure 29 is applied to the experimental principle figure (one) when being tested with two sound source methods
Figure 30 is applied to the experimental principle figure (two) when being tested with two sound source methods
Figure 31 is applied to the experimental principle figure (one) when being tested with two load methods
Figure 32 is applied to the experimental principle figure (two) when being tested with two load methods
Figure 33 air inlet and exhaust outlet out-of-alignment silencer schematic diagram
Wherein: A. anechoic room B. pressure-control valve C. pressure and temp shows that touch panel D. computer E. signal connects
It receives device F. air-stream generating device G. noise-producing equipment H. steady air current and temperature control equipment I. elevating mechanism J. is mobile
Slide unit K. running fix clamp system L. platform rotating mechanism M. hoistable platform N. Mobile Slide O. clamping manipulator P.
I, of floor bracket Q. tailstock rotating mechanism divides air-flow and II, silencer mounting platform of noise-producing equipment, III, that tail is adjusted
7. cover board of seat mechanism 1. bracket a, 2. mounting plate a, 3. blower, 4. pipe joint, 5. variable-frequency governor, 6. pipeline a, 8. rectangle
15. bracket b of hole 9. rectangular clapboard, 10. heating device, 11. orifice flowmeter, 12. pipeline b, 13. strut, 14. mounting plate b
16. 21. sensor d of leather hose a 17. sensor a, 18. sensor b, 19. silencer, 20. sensor c, 22. leather hose b 23 is surveyed
24. 29. bracket c of pipe fitting a 25.U shape pipe 26. pipe fitting b, 27. clip, 28. testing tube b of test tube a, 30. bolt a 31.
32. support a of bolt b, 33. oil cylinder a, 34. 38. support b of oil cylinder b 35.V type block a 36. sliding rail a, 37. sliding block a, 39. oil cylinder
45. sliding rail b of c 40.V type block b 41. double-rod cylinder, 42. double-rod cylinder bar, 43. mounting plate c, 44. mounting plate d, 46. sliding block b
47. 51. rectangular recess a of mounting plate e 48. clamping cylinder, 49. mounting plate f, 50. oil cylinder d, 52. rectangular recess b 53. is installed
58. pilot sleeve of plate g 54. ball-screw a, 55. stepper motor a, 56. guide rod, 57. connecting plate a, 59. connecting plate b 60.
66. gear wheel of connecting plate c 61. fixed block, 62. bolt c, 63. buffer limit pin, 64. mounting blocks, 65. pinion gear 67. is single
68. motor of bar cylinder rod, 69. single pole cylinder, 70. hole group a, 71. hole 72. insert of group b, 73. centre bore, 74. pipeline c 75.
Full sound absorption 76. upper plate of tail end, 77. hydraulic cylinder, 78. slide plate, 79. pedestal, 80. circular orbit, 81. track support, 82. support c
83. 88. link block of workbench 84. mounting plate h, 85. stepper motor b, 86. ball-screw b, 87. idler wheel, 89. connecting plate d
90. 91. sensor stand of acoustic board, 92. manipulator head, 93. connecting rod a, 94. connecting rod b, 95. castor, 96. lower plate
97. 98. rectangular channel of embedding groove
Specific embodiment
As shown in Fig. 1 to Fig. 3, Figure 19, Figure 25 and Figure 26, the present invention is by anechoic room A, pressure-control valve B, pressure and temp
Display touch panel C, computer D, signal receiver E, divide air-flow and noise-producing equipment I, silencer mounting platform II and can
It adjusts tailstock mechanism III to form, wherein the affixed acoustic board 90 of anechoic room A inner wall；Pressure-control valve B is fixed in anechoic room A
Right hand top；Pressure and temp shows that touch panel C is fixed in the front anechoic room A right upper portion；Computer D, signal receiver
E, the air-stream generating device F of air-flow and noise-producing equipment I is divided to be placed on outside anechoic room A；The connection of the front end signal receiver E
Sensor a17, sensor b18, sensor c20 and the sensor d21 of silencer mounting platform II；The rear end signal receiver E connects
Meet computer D；The noise-producing equipment G and steady air current of air-flow and noise-producing equipment I is divided to be mounted on temperature control equipment H
Inside anechoic room A；The pipeline a6 of air-flow and noise-producing equipment I is divided to pass through wall and steady air current on the left of the room anechoic room A
It is connected to temperature control equipment H left side wall, the bottom bracket b15 and adjustable tailstock machine of steady air current and temperature control equipment H
The lower plate 96 of structure III is affixed；Noise-producing equipment G is fixed on the left of steady air current and temperature control equipment H, with steady air current
It is connected to temperature control equipment H by rectangular opening 8；Divide the pipeline b12 and steady air current and temperature of air-flow and noise-producing equipment I
Control H right side wall connection, divide the middle and lower part pipeline b12 of air-flow and noise-producing equipment I and strut 13 affixed, 13 bottom of strut and
The lower plate 96 of adjustable tailstock mechanism III is affixed, divide the pipeline b12 right end of air-flow and noise-producing equipment I through leather hose b22 with
19 air inlet of silencer being mounted on running fix clamp system K is affixed；The lifting mechanism I upper end of silencer mounting platform II
Single pole cylinder rod 67 is fixed on the connecting plate b59 of silencer mounting platform II, under the lifting mechanism I of silencer mounting platform II
End is affixed by connecting plate a57 and lower plate 96；Through leather hose b22 and silencer on the left of pipeline c74 in adjustable tailstock mechanism III
19 gas outlets are affixed, are adjusted affixed through workbench 83 and Mobile Slide N below pipeline c74 in tailstock mechanism III；Mobile Slide N
Lower section and hoistable platform M are affixed；Clamping manipulator O is placed on the right side of Mobile Slide N, is adjusted on the lower plate 96 of tailstock mechanism III
Side moves；Floor bracket P is fixed in 96 lower section of lower plate of adjustable tailstock mechanism III；Tailstock rotating mechanism Q is through idler wheel 87
It is connect with upper end hoistable platform M, the tailstock lower end rotating mechanism Q passes through the lower plate of track support 81 and adjustable tailstock mechanism III
96 is affixed.
As shown in figure 4, described divide air-flow and noise-producing equipment I by air-stream generating device F, noise-producing equipment G, air-flow
It is stable to be formed with temperature control equipment H, wherein air-stream generating device F by bracket a1, mounting plate a2, blower 3, pipe joint 4,
Variable-frequency governor 5, pipeline a6 composition, the bottom bracket a1 are connect with ground, and blower 3 is fixed in the mounting plate a2 above bracket a1
On, blower 3 has variable-frequency governor 5, and the outlet of blower 3 is connect through pipe joint 4 with the entrance of pipeline a6, the outlet of pipeline a6
It is connect with steady air current with the front temperature control equipment H, steady air current and the rear portion temperature control equipment H and noise-producing equipment G
Right end is affixed；Steady air current and temperature control equipment H are by cover board 7, rectangular opening 8, rectangular clapboard 9, heating device 10, orifice flow
Meter 11, pipeline b12, strut 13, mounting plate b14, bracket b15 composition, steady air current and the rear portion temperature control equipment H are provided with rectangle
There are rectangular clapboard 9 in hole 8, steady air current and the middle section temperature control equipment H, have round sieve on rectangular clapboard 9, rectangle every
Heating device 10 is installed, steady air current and temperature control equipment H upper cover plate 7 are detachable, and orifice flowmeter 11 is affixed on plate 9
In the nearly right end of pipeline b12, strut 13 is fixed in lower section in the middle part of pipeline b12, and steady air current and temperature control equipment H are fixed in branch
On the mounting plate b14 of frame b15, pipeline b12 right end is connected to steady air current with the rear left part of temperature control equipment H；Noise occurs
Device G is fixed on the left of steady air current and temperature control equipment H, is connected with temperature control equipment H by rectangular opening 8 with steady air current
It is logical.
As shown in Fig. 5 to Figure 16, Figure 33, the silencer mounting platform II is by lifting mechanism I, Mobile Slide J, movement
Positioning and clamping mechanism K and platform rotating mechanism L composition, wherein lifting mechanism I is by guide rod 56, connecting plate a57, pilot sleeve
58, connecting plate b59, single pole cylinder rod 67, motor 68, single pole cylinder 69, hole group a70, hole group b71, insert 72,73 groups of centre bore
At, single pole cylinder 69 is fixed in below connecting plate a57, single pole cylinder rod 67 passes through connecting plate a57, by 56 top of guide rod with
Connecting plate b59 is affixed, and 58 upper end of pilot sleeve and connecting plate b59 are affixed, and lower end and connecting plate a57 are affixed, has on connecting plate a57
The hole group a70 of insert 72 and guide rod 56, the hole group b71 of single pole cylinder rod (67), centre bore 73 form；Mobile Slide J is by pacifying
Loading board g53, ball-screw a54, stepper motor a55 composition；Mounting plate g53 and top mounting plate e47 are affixed, stepper motor a55
Connect ball-screw a54；Mobile Slide J is fixed in below running fix clamp system K through mounting plate g53；Running fix clamps
Mechanism K is by leather hose a16, sensor a17, sensing b18, silencer 19, sensor c20, sensor d21, leather hose b22, testing tube
A23, pipe fitting a24, U-tube 25, pipe fitting b26, clip 27, testing tube b28, bracket c29, bolt a30, bolt b31, support
A32, oil cylinder a33, oil cylinder b34, V-block a35, sliding rail a36, sliding block a37, support b38, oil cylinder c39, V-block b40, double rod gas
Cylinder 41, double-rod cylinder bar 42, mounting plate c43, mounting plate d44, sliding rail b45, sliding block b46, mounting plate e47, clamping cylinder 48, peace
Loading board f49, oil cylinder d50, rectangular recess a51, rectangular recess b52 composition, pipeline b12 and 19 air inlet of silencer are through leather hose a16
Connection；19 gas outlet of silencer is through leather hose b22 connecting pipe c74；Sensor a17, sensor are installed at 19 air inlet of silencer
Sensor c20, sensor d21, testing tube b28 are installed in b18, testing tube a23,19 exit of silencer；Testing tube a23 and test
The pipe b28 other end connects U-tube 25 with pipe fitting b26 through pipe fitting a24 respectively, and U-tube 25 is fixed on clip 27, clip 27
Affixed with bracket c29, bracket c29 is fixed on mounting plate e47 through bolt a30, bolt b31, and silencer 19 is by V-block a35 and V
Type block b40 positioning,；The lower end V-block a35 and oil cylinder a33 and oil cylinder b34 are affixed, and oil cylinder a33 and oil cylinder b34 are fixed in support a32
Rectangular recess a51 in；V-block b40 and oil cylinder c39 are affixed, and oil cylinder c39 is fixed in the rectangular recess b52 of support b38, branch
Seat b38 and sliding block a37, sliding block b46 are affixed, and sliding block a37 and sliding rail a36 cooperation, sliding block b46 and sliding rail b45 cooperate, support b38
Right side and double-rod cylinder 41 are affixed, and double-rod cylinder bar 42 is connect with mounting plate c43, and mounting plate c43 is fixed on mounting plate d44,
Mounting plate d44 and mounting plate e47 are affixed, and clamping cylinder 48 is mounted on mounting plate f49, and mounting plate f49 and oil cylinder d50 are affixed,
Oil cylinder d50 and mounting plate e47 are affixed, and mounting plate e47 and mounting plate g53 are affixed, and mounting plate g53 and Mobile Slide J are affixed；Platform
Rotating mechanism L by connecting plate c60, fixed block 61, bolt 62, buffer limit pin 63, mounting blocks 64, pinion gear 65, gear wheel 66,
Motor 68 forms, and motor 68 is fixed on connecting plate b59 in platform rotating mechanism L；Pinion gear 65 is engaged with gear wheel 66；Canine tooth
Wheel 66 is affixed with connecting plate c60；Fixed block 61 is fixed in the bottom connecting plate c60, mounting blocks 64 are fixed in mounting plate b59
On, bolt c62 and buffer limit pin 63 are mounted on mounting blocks 64, bolt c62, buffer limit pin 63, mounting blocks 64 or so
66 two sides of gear wheel are symmetrically mounted on, the bottom connecting plate c60 is fixed in.Platform rotating mechanism L is fixed in movement through connecting plate c60
Below slide unit J.
As shown in Figure 17, Figure 18, Figure 20 to Figure 26, the adjustable tailstock mechanism III is by hoistable platform M, Mobile Slide
N, clamping manipulator O, floor bracket P and tailstock rotating mechanism Q composition, wherein hoistable platform M is by upper plate 76, hydraulic cylinder 77, cunning
Plate 78, pedestal 79, idler wheel 87, link block 88, connecting plate d89 composition, 76 lower end of upper plate and hydraulic cylinder 77 are hinged, under hydraulic cylinder 77
End is affixed with slide plate 78, and slide plate 78 and pedestal 79 are cooperatively connected, and 79 lower end of pedestal and connecting plate d89 are affixed, below connecting plate d89
Hinged with link block 88, link block 88 and idler wheel 87 carry out hingedly, and idler wheel 87 and circular orbit 80 cooperate；Mobile Slide N is by pipe
Road c74, support c82, workbench 83, mounting plate h84, stepper motor b85, ball-screw b86 composition, the outlet of silencer 19 pass through
Leather hose b22 and pipeline c74 are affixed, and the lower half portion pipeline c74 and support c82 are affixed, and the lower end support c82 and workbench 83 are affixed,
Workbench 83 is affixed through mounting plate h84 and lower section Mobile Slide N, stepper motor b85 connection ball-screw b86；Clamping manipulator O
It is made of the tail end 75 that absorbs sound entirely, sensor stand 91, manipulator head 92, connecting rod a93, connecting rod b94, clamping manipulator O
Perpendicular affixed through connecting rod a93 and connecting rod b94, manipulator head 92 is fixed in connecting rod a93 tail end, sensor stand 91
It is placed on the right side of pipeline c74, the angle α of sensor stand 91 and pipeline c74 right end exit axis is 45 degree, and spacing L is
500mm；Floor bracket P is made of castor 95, lower plate 96, embedding groove 97, rectangular channel 98, and lower plate 96 is fixed in floor bracket
On P, lower plate 96 is provided with embedding groove 97 and rectangular channel 98, affixed with castor 95 below floor bracket P, above chassis bracket P and
Lower plate 96 is affixed；Tailstock rotating mechanism Q is by circular orbit 80, track support 81, idler wheel 87, link block 88, connecting plate d89 group
At hinged with link block 88 below connecting plate d89, link block 88 and idler wheel 87 are hinged, and idler wheel 87 and the cooperation of circular orbit 80 connect
It connects, circular orbit 80 and 81 top of track support are affixed.
As shown in figure 27, when measuring transmitting loss using impulse method, 19 air inlet of pipeline b12 connection silencer, silencer
19 gas outlet connecting pipe c74 need to guarantee outlet end long enough, after pipeline c74 when measuring transmitting loss using impulse method
Face lengthens, and is connected between pipeline by leather hose.Then sensor access be can measure into transmitting loss；
As shown in figure 28, transmitting loss is measured using sound wave decomposition method, pipeline b12 and 19 air inlet of silencer need to be only connected
It connects, after 19 gas outlet of silencer and pipeline c74 are connected, by clamping manipulator O by sound-absorbing material and full sound absorption tail end 75
It is connect with the outlet end pipeline c74；
As shown in Figure 29 and Figure 30, transmitting loss is measured using two sound source methods, two sound source methods are closed using different sound source positions
System establishes four-pole parameter in two groups of difference equation solution transfer matrixes, obtains transmitting loss.It can not only be obtained using two sound source methods
The transmitting loss for obtaining noise elimination structure, can also calculate the four-pole parameter of muffling unit.But the shortcomings that two sound source methods is to calculate
Journey is more complicated, and calculation amount is bigger than normal, and sound source position exchange is also not easy to test.To solve the problems, such as that sound source exchanges inconvenience,
Silencer installment work platform is designed to rotary structure, the first sound source position is tested, after obtaining experimental data, passes through platform
Mobile Slide N, running fix clamp system K are rotated integrally 180 degree by rotating mechanism L, are equivalent to change sound source position, are continued to survey
Amount, to second group of test data, do not need moving sound, greatly reduce workload；
As shown in Figure 31 and Figure 32, pipeline b12 is connect with silencer, the exit silencer connecting pipe c74 passes through folder
Manipulator O connection load 1 is held, after obtaining test data, load 1 is removed by clamping manipulator O, load 2 is replaced with, obtains
Second group of test data.
Claims (4)
1. a kind of adjustable testing stand for automotive muffler performance test, it is characterised in that: by anechoic room (A), pressure
Control valve (B), pressure and temp show touch panel (C), computer (D), signal receiver (E), air-flow and noise are divided to fill
Set (I), silencer mounting platform (II) and adjustable tailstock mechanism (III) composition, wherein the affixed sound absorption of anechoic room (A) inner wall
Plate (90)；Pressure-control valve (B) is fixed in anechoic room (A) right hand top；Pressure and temp shows that touch panel (C) is fixed in nothing
Echo studio (A) front right upper portion；Computer (D), signal receiver (E) divide the air-flow of air-flow and noise-producing equipment (I) to send out
It is external that generating apparatus (F) is placed on anechoic room (A)；The signal receiver front end (E) connects the sensing of silencer mounting platform (II)
Device a (17), sensor b (18), sensor c (20) and sensor d (21)；The signal receiver rear end (E) connects computer (D)；
Divide the noise-producing equipment (G) and steady air current of air-flow and noise-producing equipment (I) and temperature control equipment (H) to be mounted on nothing to return
Sound chamber (A) is internal；The pipeline a (6) of air-flow and noise-producing equipment (I) is divided to pass through wall and air-flow on the left of the room anechoic room (A)
Stabilization be connected to temperature control equipment (H) left side wall, (15) bottom bracket b of steady air current and temperature control equipment (H) and can
The lower plate (96) for adjusting tailstock mechanism (III) is affixed；Noise-producing equipment (G) is fixed in steady air current and temperature control equipment
(H) left side is connected to steady air current with temperature control equipment (H) by rectangular opening (8)；Divide air-flow and noise-producing equipment (I)
Pipeline b (12) and steady air current be connected to temperature control (H) right side wall, divide the pipeline b of air-flow and noise-producing equipment (I)
(12) middle and lower part and strut (13) are affixed, and strut (13) bottom and the lower plate (96) of adjustable tailstock mechanism (III) are affixed, point
Pipeline b (12) right end of air-flow and noise-producing equipment (I) is through leather hose b (22) and is mounted on running fix clamp system (K)
Silencer (19) air inlet it is affixed；Elevating mechanism (I) the upper end single pole cylinder rod (67) of silencer mounting platform (II) is affixed
On the connecting plate b (59) of silencer mounting platform (II), lower end elevating mechanism (I) of silencer mounting platform (II) passes through company
Fishplate bar a (57) and lower plate (96) are affixed；Through leather hose b (22) and noise elimination on the left of pipeline c (74) in adjustable tailstock mechanism (III)
Device (19) gas outlet is affixed, is adjusted solid through workbench (83) and Mobile Slide (N) below pipeline c (74) in tailstock mechanism (III)
It connects；It is affixed with hoistable platform (M) below Mobile Slide (N)；Clamping manipulator (O) is placed on the right side of Mobile Slide (N), and tail is adjusted
Above the lower plate (96) of seat mechanism (III), move；Floor bracket (P) is fixed in the lower plate of adjustable tailstock mechanism (III)
(96) lower section；Tailstock rotating mechanism (Q) is connect through idler wheel (87) with upper end hoistable platform (M), and the tailstock rotating mechanism lower end (Q) is logical
It crosses track support (81) and the lower plate (96) of adjustable tailstock mechanism (III) is affixed.
2. the adjustable testing stand according to claim 1 for automotive muffler performance test, it is characterised in that: described point
Air-flow and noise-producing equipment (I) are filled by air-stream generating device (F), noise-producing equipment (G) and steady air current and temperature control
Set (H) composition, wherein air-stream generating device (F) is by bracket a (1), mounting plate a (2), blower (3), pipe joint (4), frequency conversion
Governor (5) and pipeline a (6) composition, bracket a (1) bottom are connect with ground, and blower (3) is fixed in the peace above bracket a (1)
On loading board a (2), blower (3) has variable-frequency governor (5), and the outlet of blower (3) enters through pipe joint (4) and pipeline a (6)
Mouth connection, the outlet of pipeline a (6) are connect with steady air current with the front temperature control equipment (H), and steady air current and temperature control fill
It sets the rear portion (H) and noise-producing equipment (G) right end is affixed；Steady air current and temperature control equipment (H) are by cover board (7), rectangular opening
(8), rectangular clapboard (9), heating device (10), orifice flowmeter (11), pipeline b (12), strut (13), mounting plate b (14) and
Bracket b (15) composition, steady air current and the rear portion temperature control equipment (H) are provided with rectangular opening (8), and steady air current and temperature control fill
Setting the middle section (H) has rectangular clapboard (9), and round sieve is had on rectangular clapboard (9), and rectangular clapboard is equipped with heating on (9)
Detachably, orifice flowmeter (11) is fixed in pipeline b for device (10), steady air current and temperature control equipment (H) upper cover plate (7)
(12) nearly right end, strut (13) are fixed in lower section, steady air current in the middle part of pipeline b (12) and are fixed in temperature control equipment (H)
On the mounting plate b (14) of bracket b (15), the rear left part company of pipeline b (12) right end and steady air current and temperature control equipment (H)
It is logical；Noise-producing equipment (G) is fixed on the left of steady air current and temperature control equipment (H), is filled with steady air current and temperature control
(H) is set to be connected to by rectangular opening (8).
3. the adjustable testing stand according to claim 1 for automotive muffler performance test, it is characterised in that: described
Silencer mounting platform (II) is by elevating mechanism (I), Mobile Slide (J), running fix clamp system (K) and platform rotating mechanism
(L) it forms, wherein elevating mechanism (I) is by guide rod (56), connecting plate a (57), pilot sleeve (58), connecting plate b (59), list
Bar cylinder rod (67), motor (68), single pole cylinder (69), hole group a (70), hole group b (71), insert (72) and centre bore (73) group
At single pole cylinder (69) being fixed in below connecting plate a (57), single pole cylinder rod (67) passes through connecting plate a (57), by guide rod
(56) top is affixed with connecting plate b (59), and pilot sleeve (58) upper end and connecting plate b (59) are affixed, lower end and connecting plate a (57)
It is affixed, there are the hole group a (70) of insert (72) and guide rod (56), the hole group b of single pole cylinder rod (67) on connecting plate a (57)
(71), centre bore (73) forms；Mobile Slide (J) is made of mounting plate g (53), ball-screw a (54), stepper motor a (55)；
Mounting plate g (53) and top mounting plate e (47) are affixed, stepper motor a (55) connection ball-screw a (54)；Mobile Slide (J) warp
Mounting plate g (53) is fixed in below running fix clamp system (K)；Running fix clamp system (K) is by leather hose a (16), sensing
Device a (17), sensing b (18), silencer (19), sensor c (20), sensor d (21), leather hose b (22), testing tube a (23), pipe
Connector a (24), U-tube (25), pipe fitting b (26), clip (27), testing tube b (28), bracket c (29), bolt a (30), bolt
B (31), support a (32), oil cylinder a (33), oil cylinder b (34), V-block a (35), sliding rail a (36), sliding block a (37), support b (38),
Oil cylinder c (39), V-block b (40), double-rod cylinder (41), double-rod cylinder bar (42), mounting plate c (43), mounting plate d (44), sliding rail
B (45), sliding block b (46), mounting plate e (47), clamping cylinder (48), mounting plate f (49), oil cylinder d (50), rectangular recess a (51)
It is formed with rectangular recess b (52), pipeline b (12) is connect with silencer (19) air inlet through leather hose a (16)；Silencer (19) outlet
Mouth is through leather hose b (22) connecting pipe c (74)；Sensor a (17), sensor b (18), test are installed at silencer (19) air inlet
Sensor c (20), sensor d (21), testing tube b (28) are installed in pipe a (23), silencer (19) exit；Testing tube a (23) with
Respectively through pipe fitting a (24) and pipe fitting b (26) connection U-tube (25), U-tube (25) is fixed in testing tube b (28) other end
On clip (27), clip (27) and bracket c (29) are affixed, and bracket c (29) is fixed in mounting plate through bolt a (30), bolt b (31)
On e (47), silencer (19) is positioned by V-block a (35) and V-block b (40),；(35) lower end V-block a and oil cylinder a (33) and oil
Cylinder b (34) is affixed, and oil cylinder a (33) and oil cylinder b (34) are fixed in the rectangular recess a (51) of support a (32)；V-block b (40) with
Oil cylinder c (39) is affixed, and oil cylinder c (39) is fixed in the rectangular recess b (52) of support b (38), support b (38) and sliding block a (37),
Sliding block b (46) is affixed, and sliding block a (37) and sliding rail a (36) cooperation, sliding block b (46) and sliding rail b (45) cooperate, on the right side of support b (38)
Affixed with double-rod cylinder (41), double-rod cylinder bar (42) is connect with mounting plate c (43), and mounting plate c (43) is fixed in mounting plate d
(44) on, mounting plate d (44) and mounting plate e (47) is affixed, and clamping cylinder (48) is mounted on mounting plate f (49), mounting plate f
(49) affixed with oil cylinder d (50), oil cylinder d (50) and mounting plate e (47) is affixed, and mounting plate e (47) and mounting plate g (53) is affixed,
Mounting plate g (53) and Mobile Slide (J) are affixed；Platform rotating mechanism (L) is by connecting plate c (60), fixed block (61), bolt
(62), buffer limit pin (63), mounting blocks (64), pinion gear (65), gear wheel (66), motor (68) composition, platform whirler
Motor (68) is fixed on connecting plate b (59) in structure (L)；Pinion gear (65) is engaged with gear wheel (66)；Gear wheel (66) and company
Fishplate bar c (60) is affixed；Fixed block (61) is fixed in connecting plate c (60) bottom, mounting blocks (64) are fixed in mounting plate b (59)
On, bolt c (62) and buffer limit pin (63) are mounted on mounting blocks (64), bolt c (62), buffer limit pin (63), peace
Dress block (64) is left and right symmetrically arranged in gear wheel (66) two sides, is fixed in connecting plate c (60) bottom；Platform rotating mechanism (L) warp
Connecting plate c (60) is fixed in below Mobile Slide (J).
4. the adjustable testing stand according to claim 1 for automotive muffler performance test, it is characterised in that: described
Adjustable tailstock mechanism (III) is revolved by hoistable platform (M), Mobile Slide (N), clamping manipulator (O), floor bracket (P) and tailstock
Rotation mechanism (Q) composition, wherein hoistable platform (M) by upper plate (76), hydraulic cylinder (77), slide plate 78, pedestal (79), idler wheel (87),
Link block (88) and connecting plate d (89) composition, upper plate (76) lower end and hydraulic cylinder (77) hingedly, hydraulic cylinder (77) lower end and slide plate
(78) affixed, slide plate (78) and pedestal (79) are cooperatively connected, and pedestal (79) lower end and connecting plate d (89) are affixed, connecting plate d (89)
Hingedly, link block (88) and idler wheel (87) carry out hingedly, and idler wheel (87) and circular orbit (80) cooperate for lower section and link block (88)；
Mobile Slide (N) is by pipeline c (74), support c (82), workbench (83), mounting plate h (84), stepper motor b (85), ball wire
Thick stick b (86) composition, silencer (19) outlet is affixed by leather hose b (22) and pipeline c (74), (74) lower half portion pipeline c and branch
Seat c (82) is affixed, and (82) lower end support c and workbench (83) are affixed, and workbench (83) is slided through mounting plate h (84) and lower section are mobile
Platform (N) is affixed, stepper motor b (85) connection ball-screw b (86)；Clamping manipulator (O) is by the tail end that absorbs sound entirely (75), sensor
Bracket (91), manipulator head (92), connecting rod a (93), connecting rod b (94) composition, clamping manipulator (O) is through connecting rod a
(93) and connecting rod b (94) is perpendicular affixed, and manipulator head (92) are fixed in connecting rod a (93) tail end, sensor stand
(91) it being placed on the right side of pipeline c (74), the angle α of sensor stand (91) and pipeline c (74) right end exit axis is 45 degree,
It is 500mm away from L；Floor bracket (P) is made of castor (95), lower plate (96), embedding groove (97) and rectangular channel (98), lower plate
(96) it is fixed on floor bracket (P), lower plate (96) is provided with embedding groove (97) and rectangular channel (98), floor bracket (P) lower section
It is affixed with castor (95), it is affixed with lower plate (96) above chassis bracket (P)；Tailstock rotating mechanism (Q) by circular orbit (80),
Track support (81), idler wheel (87), link block (88), connecting plate d (89) are formed, the lower section connecting plate d (89) and link block (88)
Hingedly, hingedly, idler wheel (87) and circular orbit (80) are cooperatively connected, circular orbit (80) and rail for link block (88) and idler wheel (87)
It is affixed above road bracket (81).
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| CN201910326384.9A CN110031239B (en) | 2019-04-23 | 2019-04-23 | Adjustable test bed for testing performance of automobile muffler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049208A (en) * | 2021-04-07 | 2021-06-29 | 上海应用技术大学 | Analog noise absorbing device |
| CN116511917A (en) * | 2023-04-28 | 2023-08-01 | 湖北兰荀环保工程有限公司 | Impedance composite muffler and production line thereof |
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| CN116511917B (en) * | 2023-04-28 | 2023-09-19 | 湖北兰荀环保工程有限公司 | Impedance composite muffler and production line thereof |
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