CN105784357B - Noise of automobile speed changer testing stand - Google Patents
Noise of automobile speed changer testing stand Download PDFInfo
- Publication number
- CN105784357B CN105784357B CN201610280301.3A CN201610280301A CN105784357B CN 105784357 B CN105784357 B CN 105784357B CN 201610280301 A CN201610280301 A CN 201610280301A CN 105784357 B CN105784357 B CN 105784357B
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- China
- Prior art keywords
- bracket
- sensor
- speed changer
- fixed
- bugle call
- Prior art date
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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
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/028—Acoustic or vibration analysis
-
- 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
Abstract
The invention discloses a kind of noise of automobile speed changer testing stands, to overcome the problems, such as the prior art, there are the versatility of transmission support bracket and sensor stand is inadequate comprising transmission support bracket, sensor stand device, sensor group, sound-absorbing part, driving motor and load motor；Driving motor is mounted on the right side of testing stand, load motor is mounted on the left side of testing stand, transmission support bracket is mounted on the testing stand between driving motor and load motor, tested speed changer is horizontally mounted on transmission support bracket, driving motor is connected with the right end of tested transmission input shaft, the left end of tested transmission output shaft is connected with the right end of load motor, semianechoic room spiral-lock in sound-absorbing part is on the testing stand around transmission support bracket, noise absorption cover in sound-absorbing part is sleeved on the input shaft and output shaft inside semianechoic room, sensor group is mounted on around tested speed changer by sensor stand device, on the same side and input shaft of input shaft and output shaft and output shaft.
Description
Technical field
The present invention relates to a kind of testing stands of auto parts and components experimental field, specifically, the present invention relates to a kind of automobiles
Transmission noise test platform.
Background technique
Automotive transmission is the important component of car transmissions, while being also one of the Main Noise Sources of automobile,
Therefore, noise level significant effect of the test and control of transmission noise for improvement vehicle.The survey of noise of automobile speed changer
Examination mainly can test two ways using vehicle road test and test-bed.Wherein, although the operating condition of vehicle road test
There are many noise source for actual condition, but when due to actual vehicle road test, are difficult to control other noise sources to speed changer
The influence of noise.And in a manner of experimental stand test, other noise jammings are small, and surveyed noise, and can closer to true value
By the design to test-bed, to achieve the effect that simulate vehicle road running mode.
Currently, there are many research that China carries out bench test test to transmission noise, and speed changer is generated not
The noise of same type has research.But disclose less for the specific design of test-bed, horse structure etc., especially
Lack being discussed in detail for the more common testing stand suitable for different model speed changer.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the prior art, there are transmission support bracket and sensor stands
The inadequate problem of versatility provides a kind of noise of automobile speed changer testing stand.
In order to solve the above technical problems, the present invention is achieved by the following technical scheme: the automotive transmission is made an uproar
Sound testing stand includes transmission support bracket, sensor stand device, sensor group, sound-absorbing part, driving motor and load motor；
The driving motor is mounted on the right side of testing stand, and load motor is mounted on the left side of testing stand, speed changer branch
Frame is mounted on the testing stand between driving motor and load motor, and tested speed changer is horizontally mounted on transmission support bracket,
Driving motor is connected with the right end of tested transmission input shaft, is tested the left end of transmission output shaft and the right end of load motor
It is connected, the semianechoic room in sound-absorbing part is mounted on the testing stand around transmission support bracket, the noise absorption cover in sound-absorbing part
It is sleeved on the input shaft and output shaft inside semianechoic room, sensor group is mounted on tested speed change by sensor stand device
Around device, on the same side and input shaft and output shaft of input shaft and output shaft.
The 1 bugle call pressure sensor bracket, 2 bugle call pressure sensor brackets, 3 bugle call pressure sensor brackets, 4 bugle call pressure pass
Sensor bracket, No. 1 photoelectric sensor bracket are identical as No. 2 photoelectric sensor supporting structures；1 bugle call, which is pressed, to be passed
Sensor bracket includes clip, fixed block, core pin, swing arm and support telescopic bar；The side of the clip and fixed block uses
It is bolted, is fixed in the hole of core pin upper end insertion lower end of fixing block and using No. 2 screws, the bottom end of core pin and swing arm
Top is fixedly connected, and the bottom end of swing arm is connect using No. 3 screws with nut with the top of support telescopic bar.
The transmission support bracket is fixed including the identical vibration isolation block of 4 block structures, pedestal, input terminal fixed plate, output end
Ring and the fixed bracket of output end；The identical vibration isolation block of 4 block structures is fixed on the four corners of base end face, and input terminal is fixed
Plate is vertically fixed on the right end of pedestal, and the longitudinally asymmetric face of input terminal fixed plate and the longitudinally asymmetric face of pedestal are coplanar, output
Support bracket fastened two base angle is held to be mounted on to be slidably connected in two " convex " font grooves of pedestal left end, output end fixed ring peace
It is connected mounted in the support bracket fastened top of output end and using fixed ring screw.
Sensor group described in technical solution is mounted on around tested speed changer by sensor stand device, is inputted
Refer on the same side and input shaft of axis and output shaft and output shaft: the sensor group includes 1 bugle call pressure sensor, No. 2
Sound pressure sensor, 3 bugle call pressure sensors, 4 bugle call pressure sensors, No. 1 photoelectric sensor, No. 2 photoelectric sensors, 1
Number torque sensor, No. 2 torque sensors and oil temperature sensor；The sensor stand device includes 1 bugle call pressure sensor
Bracket, 2 bugle call pressure sensor brackets, 3 bugle call pressure sensor brackets, 4 bugle call pressure sensor brackets, No. 1 photoelectric sensor
Bracket) and No. 2 photoelectric sensor brackets；1 bugle call pressure sensor and 2 bugle call pressure sensors pass through 1 bugle call pressure sensing respectively
Device bracket and 2 bugle call pressure sensor rack arrangements are symmetrically in tested speed changer front and rear sides, and relative to tested speed changer
Arrangement, 3 bugle call pressure sensors are by 3 bugle call pressure sensor rack arrangements in the surface of tested speed changer, 4 bugle call pressure sensors
By 4 bugle call pressure sensor rack arrangements in the left side of tested speed changer, and it is in the surface of output shaft.
No. 1 photoelectric sensor and No. 2 photoelectric sensors pass through No. 1 photoelectric sensor bracket and 2 respectively
Number photoelectric sensor bracket is mounted on the same side of input shaft and output shaft, and guarantees No. 1 photoelectric sensor and No. 2
The centre of gyration line of photoelectric sensor and input shaft and output shaft is in same level；Input shaft and output shaft just
Reflective paster is sticked to the position of No. 1 photoelectric sensor and No. 2 photoelectric sensors；One end of No. 1 torque sensor
It is connect with the output end of driving motor by No. 1 shaft coupling of input terminal, the other end of No. 1 torque sensor and tested speed changer are certainly
The input terminal of body passes through No. 2 shaft coupling connections of input terminal；One end of No. 2 torque sensors and the output end of load motor pass through defeated
The output end of No. 2 shaft coupling connections of outlet, the other end of No. 2 torque sensors and tested speed changer itself passes through output end 1
Shaft coupling connection, oil temperature sensor are fixed on the case of transmission of tested speed changer.
No. 1 installed respectively by 1 bugle call pressure sensor bracket and 2 bugle call pressure sensor brackets described in technical solution
Sound pressure sensor and the height of 2 bugle call pressure sensors and the axial line of tested transmission input shaft are contour, are pressed and are sensed by 4 bugle call
4 vertical ranges of the bugle call pressure sensor away from noise absorption cover the top of device bracket installation are 50mm；Right above tested speed changer
3 bugle call pressure sensor faces be tested transmission input shaft revolution axle center line.
Fixed block described in technical solution is cuboid structural member, is provided with smooth bolt on the right side of fixed block
Hole, the size in aperture is equal with the outer diameter of No. 2 screws, and the lower end of fixed block is vertically provided with smooth cylindrical hole, fixed block
The smooth cylindrical hole of lower end is connected with the smooth bolt hole on the right side of fixed block；The upper end of the core pin is radially set
It is equipped with the perforative threaded hole in " ten " font, the outer diameter of threaded hole is equal with the internal diameter of the bolt hole on the right side of fixed block, screw thread
The axis of rotation in hole and the rotation conllinear of the bolt hole on the right side of fixed block, the knot of the structure size of threaded hole and No. 2 screws
Structure size is identical, and the outer diameter of core pin and the internal diameter of light cylindrical hole of lower end of fixing block are identical, and the hole depth of light cylindrical hole is not
Intersect perforation with the internal thread hole on the left of fixed block.
Pedestal described in technical solution is rectangular plate structural member, the middle in pedestal one end and the longitudinal direction along pedestal
It is provided with " convex " the font groove to accommodate support bracket fastened " convex " the font footing of output end being parallel to each other, "convex" shaped is recessed
The left end of slot opens up；The input terminal fixed plate is rectangular plate structural member, and the upper end of input terminal fixed plate is provided with
Input port, fixed plate screw hole has been evenly distributed around input port, and input port diameter is less than transmission input shell
The maximum inner diameter of body.
The fixed bracket of output end described in technical solution is " people " font bracket, support bracket fastened two footing of output end with
The shape of two " convex " font grooves on pedestal is identical, the support bracket fastened top of output end be arranged along the vertical direction there are two knot
The identical fixed bracket screw hole of structure；The output end fixed ring is attached together together using two semicircle rings, and uses bolt
It is fixed；Two fixed rings immersed oneself in corresponding with fixed bracket screw hole are arranged in the bottom of output end fixed ring lower half annulus
Screw hole；Install the shape phase of one piece with the fixed top of support end face of output end between output end fixed ring and the fixed bracket of output end additional
Two and fixed bracket are arranged on horizontal positioned gasket in the equal horizontal positioned gasket with, size along the vertical direction
The hole that screw hole and fixed ring Screw hole structure size match.
Compared with prior art the beneficial effects of the present invention are:
1. the transmission support bracket that noise of automobile speed changer testing stand of the present invention provides can be by its own knot
The adjustment of structure and height and the adjustment of local part and more bringing, which is realized, tests different size of speed changer.
2. the sensor stand that noise of automobile speed changer testing stand of the present invention provides can be multiple by its own
Position is adjusted and the replacement of local part, to support the sensor of different type, different location demand.
Detailed description of the invention
The present invention will be further described below with reference to the drawings:
Fig. 1 is noise of automobile speed changer test platform structure composition schematic diagram of the present invention；
Fig. 2 is speed changer installation and sound pressure sensor position in noise of automobile speed changer testing stand of the present invention
Axonometric projection view；
Fig. 3 is the axonometric projection of the structure composition of transmission support bracket in noise of automobile speed changer testing stand of the present invention
View；
Fig. 4 is the breakdown axis of the structure composition of transmission support bracket in noise of automobile speed changer testing stand of the present invention
Survey projection view；
Fig. 5 is the output end fixed ring in transmission support bracket in noise of automobile speed changer testing stand of the present invention, pad
The breakdown axonometric projection view of piece and the support bracket fastened partial enlargement of output end；
Fig. 6 is the main view of sensor stand in noise of automobile speed changer testing stand of the present invention；
Fig. 7 is the left view of sensor stand in noise of automobile speed changer testing stand of the present invention；
Fig. 8 is the office of the core pin above section of sensor stand in noise of automobile speed changer testing stand of the present invention
The breakdown axonometric projection view of portion's amplification；
In figure: 1. driving motors, 2. shaft couplings of input terminal 1, No. 3.1 torque sensors, 4. shaft couplings of input terminal 2,
No. 5.1 photoelectric sensors, 6. input shafts, 7. semianechoic rooms, 8. transmission support brackets, 8-1. vibration isolation block, 8-2. pedestal, 8-3.
Input terminal fixed plate, 8-4. fixed plate screw hole, 8-5. input port, 8-6. output end fixed ring, 8-6-1. fixed ring screw, 8-
6-2. fixed ring screw hole, 8-7. gasket, the fixed bracket of 8-8. output end, the fixed bracket screw hole of 8-8-1., 8-9. " convex " font are recessed
Slot, 9. tested speed changers, 10.1 bugle call pressure sensors, 11.2 bugle call pressure sensors, 12.3 bugle call pressure sensors, 13.4 bugle call pressures
Sensor, 14. output shafts, 15. shaft couplings of output end 1, No. 16.2 torque sensors, 17. shaft couplings of output end 2,18.2
Number photoelectric sensor, 19. load motors, 20. load motor pedestals, No. 21.2 photoelectric sensor brackets, 22. sound absorptions
Cover, 23.4 bugle call pressure sensor brackets, 24.1 bugle call pressure sensor brackets, 24-1. clip, 24-2.1 screw, 24-3. are fixed
Block, 24-4. core pin, 24-5.2 screw, 24-6. swing arm, 24-7. nut, 24-8.3 screw, 24-9. support telescopic bar,
25.2 bugle call pressure sensor brackets, 26.3 bugle call pressure sensor brackets, 27. oil temperature sensors, No. 28.1 photoelectric sensors
Bracket, 29. driving motor pedestals, 30. stations.
Specific embodiment
The present invention is explained in detail with reference to the accompanying drawing:
Noise of automobile speed changer testing stand of the present invention mainly includes transmission support bracket 8, sensor stand device, passes
Sensor group, sound-absorbing part, driving motor 1 and load motor 19.
Refering to Fig. 3 and Fig. 4, transmission support bracket 8 has included the identical vibration isolation block 8-1 of 4 block structures of overall support effect, bottom
Seat 8-2, the input terminal fixed plate 8-3 for fixing and supporting the tested input of speed changer 9 end housing, tested 9 output end of speed changer is supported
The fixed bracket 8-8 of the output end fixed ring 8-6 and output end of shell.
The pedestal 8-2 be rectangular plate structural member, the one end pedestal 8-2 middle and along the longitudinal direction of pedestal 8-2
It is provided with " convex " font groove 8-9 that two sliver transvers sections being parallel to each other are " convex " font, to accommodate the fixed bracket of output end
The footing of " convex " font of 8-8, to realize that the fixed bracket 8-8 of output end can be moved axially along speed changer, to realize this change
Fast device bracket 8 can support the speed changer of axially different length.
The vibration isolation block 8-1 is rectangular block shape structural member, using rubber material, mainly prevents from being tested change in experiment progress
Influence of the noise that the vibration of fast device 9 drives the Relative Vibration between transmission support bracket 8 and ground to generate to experimental measurements,
Vibration isolation block 8-1 is Nian Jie using glue with pedestal 8-2.
The input terminal fixed plate 8-3 is rectangular plate structural member, and the upper end of input terminal fixed plate 8-3 is provided with input
Fixed plate screw hole 8-4 is evenly distributed around port 8-5, input port 8-5, input terminal fixed plate 8-3 is used screws to
The input end of fixed tested case of transmission.Input port 8-5 diameter is less than the most imperial palace that speed changer 9 inputs end housing
Diameter.Fixed plate 8-3 welds together perpendicular to pedestal 8-2, bottom surface and the upper surface pedestal 8-2 of fixed plate 8-3.
The fixed bracket 8-8 of the output end is " people " font bracket, two footing and pedestal of the fixed bracket 8-8 of output end
Two " convex " font groove 8-9 shapes on 8-2 are identical, and "convex" shaped groove 8-9 extends through the left end of pedestal 8-2, output
Two footing of fixed bracket 8-8 are held to enter inside "convex" shaped groove 8-9 from left side, and can be according to the length of tested speed changer
Degree is different and left and right adjusts.The top of the fixed bracket 8-8 of output end be arranged along the vertical direction fixed props up there are two structure is identical
Frame screw hole 8-8-1.
Refering to Fig. 5, there are two fixed ring spiral shells corresponding with fixed bracket screw hole 8-8-1 for the bottom output end fixed ring 8-6
Hole 8-6-2.Output end fixed ring 8-6 is combined using two semicircle rings, is fixed by screw and nut.Assembly
When, two fixed ring screw 8-6-1 immerse oneself in output end fixed ring 8-6 inner surface, guarantee the output end housing of tested speed changer 9
It can enter inside output end fixed ring 8-6.
The present embodiment is solid with output end using one piece between output end fixed ring 8-6 and the fixed bracket 8-8 of output end
The horizontal positioned gasket 8-7 that the shape of the top surface fixed rack 8-8 is identical, size is equal.It is same along the vertical direction on gasket 8-7
Sample setting guarantees that fixed ring screw 8-6-1 can pass through there are two the hole to match.
In the spare part of noise of automobile speed changer testing stand of the present invention, there is the output end fixed ring of different-diameter
8-6 can be adapted for the tested speed changer 9 of different output end housing outer diameters.Correspondingly, there are also multiple and different thickness in spare part
The gasket 8-7 of degree, this is because the tested fixed height of 9 input terminal of speed changer is constant, and when tested 9 output end of speed changer
When housing outer diameter difference, thus in order to guarantee output shaft 18 axis height it is constant, need by add and subtract gasket 8-7 thickness come
Adjust the height of the fixed bracket 8-8 of output end.The thickness of the output end fixed ring 8-6 of different-diameter is identical, the fixed branch of output end
Frame 8-8 height is constant, and the absolute altitude to guarantee 18 axis of output shaft is constant, when required output end fixed ring 8-6 is relatively large in diameter
When, the thickness of gasket 8-7 should be reduced；When required output end fixed ring 8-6 diameter is smaller, the thickness of Ying Zengjia gasket 8-7.
Sensor stand device in noise of automobile speed changer testing stand of the present invention is used to support, fix in not
With the sound pressure sensor and photoelectric sensor of position, used each sensor stand (i.e. 1 bugle call pressure sensor bracket 24
To 28, No. 2 photoelectric sensor brackets 21 of 4 bugle call pressure sensor brackets 23 and No. 1 photoelectric sensor bracket) it is general
Bracket, i.e., 1 bugle call pressure sensor, 10 to 4 bugle call pressure sensor 13 and No. 1 light that each position is placed suitable for the present invention
6, No. 2 photoelectric sensors 17 of electric speed probe.
Refering to Fig. 6 and Fig. 7, the 1 bugle call pressure sensor bracket 24 includes playing fixed sensor and capable of changing sensing
The clip 24-1 of device direction effect, fixed block 24-3, the swing arm for playing the role of adjusting the direction of clip 24-1 and fixed block 24-3
24-6, it No. 3 screws (24-8), nut (24-7), plays support and adjusts the support telescopic bar 24-9 of function of height.
Refering to Fig. 8, the smooth bore that No. 1 screw 24-2 can be made to pass through, fixed block are provided at the center of clip 24-1
The threaded hole corresponding to No. 1 screw 24-2 is provided on the left of 24-3, clip 24-1 is fixed on fixed block 24-3 by No. 1 screw 24-2
On；Fixed block 24-3 is cuboid structural member, is provided with smooth bolt hole, the size in aperture on the right side of fixed block 24-3
It is equal with the outer diameter of No. 2 screw 24-5, smooth cylindrical hole, fixed block are vertically provided at the center of the lower end fixed block 24-3
The smooth cylindrical hole of the lower end 24-3 is connected with the smooth bolt hole on the right side of fixed block 24-3.
There are other clips of different sizes in the spare part of noise of automobile speed changer testing stand of the present invention, in order to
Suitable for variety classes and different size of sensor.As sound pressure sensor in the present embodiment and photoelectric sensor are selected
Different size of clip 24-1.
Core pin 24-4 is in the close one end fixed block 24-3, that is, the upper end, along being arranged radially in " ten " for core pin 24-4
The outer diameter size of the perforative threaded hole of font, threaded hole is identical as the bolt hole internal diameter on the right side of fixed block 24-3, is matched with 2 jointly
Number screw 24-5.The lower end of fixed block 24-3 is provided with internal diameter smooth cylindrical identical with the outer diameter of core pin 24-4 hole, and
Hole depth does not intersect perforation with the internal thread hole on the left of fixed block 24-3.Since the lower surface of core pin 24-4 is and swing arm 24-6
What upper surface welded together, so when clip 24-1 is fixed on fixed block 24-3, the fixed block 24-3 and core pin 24-
4 structure, which can guarantee that fixed block 24-3 is often rotated by 90 ° around core pin 24-4, can realize fixation.
Referring to Fig.2,4 bugle call pressure sensor brackets 23 are compared with 1 bugle call pressure sensor bracket 24, fixed block 24-3 is had rotated
90°。
The upper end swing arm 24-6 is welded to together with the lower surface core pin 24-4, and bottom end is semi-cylindrical, semicolumn
The semi-cylindrical groove on the top of the minimum point and support telescopic bar 24-9 in face connects.The lower end of swing arm 24-6 passes through nut
The top of 24-7 and No. 3 screw 24-8 and support telescopic bar 24-9, which is realized, to be fixed.Swing arm 24-6 can be revolved around No. 3 screw 24-8
Turn and fix, helps to realize the requirement tested to different sensors different location.
Referring to Fig.2,3 bugle call pressure sensor brackets 26 and 4 bugle call pressure sensor brackets 23 and 1 bugle call pressure sensor bracket 24
It is compared with 2 bugle call pressure sensor brackets 25, swing arm 24-6 has rotated 90 ° around No. 3 screw 24-8.
Support telescopic bar 24-9 includes top half thin bar, lower half portion thick bar and thick bar the lowermost pedestal.Lower half
Part thick bar is hollow straight-bar, has screw thread inside thick bar.It has outside top half thin bar and matches with thick bar internal screw thread
External screw thread.Therefore it can be realized by rotating and be stretched up and down between thin bar and thick bar, and then realize support telescopic bar 24-9
Height adjustment.
The clip 24-1 and the side of fixed block 24-3 is connected by screw bolts, and the upper end of core pin 24-4, which is inserted into, to be fixed
It is fixedly connected in the hole of the lower end block 24-3 and using No. 2 screw 24-5, the bottom end of core pin 24-4 and the top of swing arm 24-6 are solid
The bottom end of fixed connection, swing arm 24-6 is connect using No. 3 screw 24-8 with nut 24-7 with the top of support telescopic bar 24-9.
Referring to Fig.2,1 bugle call pressure sensor bracket 24,3 bugle call pressure sensor brackets 26 and 4 bugle call pressure sensor brackets 23
Height it is different, be to be realized by the adjusting of above-mentioned support telescopic bar 24-9.
Sensor group includes 1 bugle call pressure sensor 10,2 bugle call pressure sensors 11,3 bugle call pressure sensors 12,4 bugle call pressure biography
The torque sensor 15 of torque sensor 4,2 of photoelectric sensor 17,1 of photoelectric sensor 6,2 of sensor 13,1
With oil temperature sensor 27.
Referring to Fig.2,1 bugle call of bugle call pressure sensor 10 and 2 pressure sensor 11 passes through 1 bugle call pressure sensor bracket 24 and No. 2
Sound pressure sensor bracket 25 is arranged in tested 9 front and rear sides of speed changer, and is arranged symmetrically relative to tested speed changer 9；3 bugle call pressures
Sensor 12 is arranged in right above tested speed changer 9 by 3 bugle call pressure sensor brackets 26；4 bugle call pressure sensors 13 pass through No. 4
Sound pressure sensor bracket 23 is arranged in the left side of tested speed changer 9, and is in the surface of output shaft 18.Wherein, former and later two
The height of measuring point and the axial line of tested 9 input shaft 2 of speed changer are contour, vertical range of the left side measuring point away from 22 the top of noise absorption cover
For 50mm；Also face is tested 9 input shaft of speed changer, 2 axial line to measuring point right above tested speed changer 9.Due to this embodiment party
The maximal axial extension of the case of transmission gabarit of case is less than 500mm, so the measurement distance of each measuring point and tested speed changer 9 is
300mm。
No. 1 photoelectric sensor 6 and No. 2 photoelectric sensor 17 uses reflection type photoelectricity speed probe, respectively
Input shaft 2 is fixed on by No. 1 photoelectric sensor bracket 28 and No. 2 photoelectric sensor bracket 21 and output shaft 18 is same
Side, and the centre of gyration line of No. 1 photoelectric sensor 6 and No. 2 photoelectric sensor 17 of guarantee and axis is in same level
On face.Wherein No. 1 photoelectric sensor bracket 28 and No. 2 photoelectric sensor bracket 21 using with No. 1 to 4 bugle call
The identical bracket of pressure sensor bracket 24.No. 1 photoelectric sensor 6 and No. 2 photoelectricity of face on input shaft 6 and output shaft 14
Stick reflective paster in the position of speed probe 17.The revolving speed of transmission input and output end is acquired by speed probe
Signal.
No. 1 torque sensor 4 and No. 2 torque sensor 15 uses non-contact torque sensor.No. 1 torque sensor 4
One (right side) end connect with the output end of driving motor 1 by input terminal No. 1 shaft coupling 3 use flat key；No. 1 torque sensor 4
Another (left side) end connect with the input terminal of tested speed changer 9 itself by input terminal No. 2 shaft couplings 5 use flat keys.No. 2 torques
One (right side) end of sensor 16 is connect by No. 1 shaft coupling 15 of output end using flat key with the output shaft 14 of tested speed changer 9；2
Another (left side) end of number torque sensor 16 and the output end of load motor 19 are connected by No. 2 shaft couplings 17 of output end using flat key
It connects.
Oil temperature sensor 27 uses screw-type platinum resistance temperature sensor, is fixed in the speed changer of tested speed changer 9
On shell, the oil temperature of tested speed changer 9 is monitored by oil temperature sensor 27, when oil temperature rises to 60 ± 5 DEG C, is started real
It tests.
Sound-absorbing part includes semianechoic room 7 and noise absorption cover 22.
Refering to fig. 1, the surrounding inside semianechoic room 7 and ceiling are covered with wedge absorber structural member, and wedge absorber is using more
Hole sound absorbing material；Ground is hard rigid reflecting surface.Semianechoic room 7 guarantees that the reflected sound of tested 9 surrounding space of speed changer is minimum,
Largely reduce influence of the reflected sound to test result.
Input shaft 2 and 18 part of output shaft inside semianechoic room 7 add noise absorption cover 22, and noise absorption cover 22 is using soft
Polyurethane foam.Noise absorption cover 22 is fixed on transmission shaft with glue.The noise that noise absorption cover 22 guarantees that transmission shaft issues is absorbed, and is kept away
Exempt from it and interference is generated to the noise of tested speed changer 9.
Driving motor 1 and load motor 19 are all made of ac three-phase asynchronous motor, and right using electric machine control system (PLC)
The torque of driving end and load end and revolving speed are controlled.Since bench test needs to simulate vehicle road running mode, so
Real-time control is carried out to the torque of load motor 19 and revolving speed by control system, carrys out the inertia of simulated automotive traveling.
Claims (1)
1. a kind of noise of automobile speed changer testing stand, which is characterized in that the noise of automobile speed changer testing stand includes speed change
Device bracket (8), sensor stand device, sensor group, sound-absorbing part, driving motor (1) and load motor (19)；
The driving motor (1) is mounted on the right side of testing stand, and load motor (19) is mounted on the left side of testing stand, speed changer
Bracket (8) is mounted on the testing stand between driving motor (1) and load motor (19), and tested speed changer (9) are horizontally installed
On transmission support bracket (8), driving motor (1) is connected with the right end of tested speed changer (9) input shaft (6), is tested speed changer
(9) left end of output shaft (14) is connected with the right end of load motor (19), and the semianechoic room (7) in sound-absorbing part is mounted on change
On testing stand around fast device bracket (8), the noise absorption cover (22) in sound-absorbing part is sleeved on the internal input shaft of semianechoic room (7)
(6) and on output shaft (14), sensor group is mounted on around tested speed changer (9) by sensor stand device, input shaft
(6) and on the same side of output shaft (14) and input shaft (6) and output shaft (14)；
The sensor stand device includes 1 bugle call pressure sensor bracket (24), 2 bugle call pressure sensor brackets (25), 3 bugle call
Pressure sensor bracket (26), 4 bugle call pressure sensor brackets (23), No. 1 photoelectric sensor bracket (28) and No. 2 photoelectric whirls
Sensor stand (21)；
The 1 bugle call pressure sensor bracket (24), 2 bugle call pressure sensor brackets (25), 3 bugle call pressure sensor brackets (26), 4
Bugle call pressure sensor bracket (23), No. 1 photoelectric sensor bracket (28) and No. 2 photoelectric sensor bracket (21) structures
It is identical；
The 1 bugle call pressure sensor bracket (24) includes clip (24-1), fixed block (24-3), core pin (24-4), swing arm
(24-6) and support telescopic bar (24-9)；
The clip (24-1) and the side of fixed block (24-3) is connected by screw bolts, and the insertion of the core pin upper end (24-4) is fixed
It is in the hole of the lower end block (24-3) and fixed using No. 2 screws (24-5), the bottom end of core pin (24-4) and the top of swing arm (24-6)
End is fixedly connected, and the bottom end of swing arm (24-6) and the top of support telescopic bar (24-9) use No. 3 screws (24-8) and nut
(24-7) connection；
The transmission support bracket (8) includes the identical vibration isolation block of 4 block structures (8-1), pedestal (8-2), input terminal fixed plate (8-
3), output end fixed ring (8-6) and output end are fixed bracket (8-8)；
The identical vibration isolation block of 4 block structures (8-1) is fixed on the four corners of the bottom surface pedestal (8-2), input terminal fixed plate (8-
3) right end of pedestal (8-2), the longitudinally asymmetric face of input terminal fixed plate (8-3) and the longitudinal direction of pedestal (8-2) are vertically fixed on
The plane of symmetry is coplanar, and two base angles of output end fixed bracket (8-8) are mounted on two " convex " font grooves of the left end pedestal (8-2)
To be slidably connected in (8-9), output end fixed ring (8-6) is mounted on the top of output end fixed bracket (8-8) and using fixation
Ring screw (8-6-1) connection；
The sensor group is mounted on around tested speed changer (9) by sensor stand device, input shaft (6) and output
Refer on the same side of axis (14) and input shaft (6) and output shaft (14):
The sensor group includes 1 bugle call pressure sensor (10), 2 bugle call pressure sensors (11), 3 bugle call pressure sensors (12), 4
Bugle call pressure sensor (13), No. 1 photoelectric sensor (5), No. 2 photoelectric sensors (18), No. 1 torque sensor (3),
No. 2 torque sensors (16) and oil temperature sensor (27)；
1 bugle call pressure sensor (10) and 2 bugle call pressure sensors (11) pass through 1 bugle call pressure sensor bracket (24) and 2 bugle call respectively
Pressure sensor bracket (25) is arranged in tested speed changer (9) front and rear sides, and is symmetrically cloth relative to tested speed changer (9)
It sets；3 bugle call pressure sensors (12) are arranged in the surface of tested speed changer (9) by 3 bugle call pressure sensor brackets (26)；No. 4
Sound pressure sensor (13) is arranged in the left side of tested speed changer (9) by 4 bugle call pressure sensor brackets (23), and is in output shaft
(14) surface；
No. 1 photoelectric sensor (5) and No. 2 photoelectric sensors (18) pass through No. 1 photoelectric sensor bracket respectively
(28) it is mounted on the same side of input shaft (6) Yu output shaft (14) with No. 2 photoelectric sensor brackets (21), and guarantees No. 1
Photoelectric sensor (5) and No. 2 photoelectric sensors (18) and input shaft (6) and the centre of gyration line of output shaft (14) exist
In same level；No. 1 photoelectric sensor (5) of face in input shaft (6) and output shaft (14) passes with No. 2 photoelectric whirls
Stick reflective paster in the position of sensor (18)；The output end of one end of No. 1 torque sensor (3) and driving motor (1) passes through defeated
Enter shaft coupling (2) connection of end 1, the input terminal of the other end and tested speed changer (9) itself of No. 1 torque sensor (3) passes through
No. 2 shaft coupling (4) connections of input terminal；One end of No. 2 torque sensors (16) and the output end of load motor (19) pass through output
No. 2 shaft coupling (17) connections are held, the output end of the other end and tested speed changer (9) itself of No. 2 torque sensors (16) passes through
No. 1 shaft coupling (15) connection of output end, oil temperature sensor (27) are fixed on the case of transmission of tested speed changer (9)；
Described being pressed respectively by 1 bugle call of 1 bugle call pressure sensor bracket (24) and the installation of 2 bugle call pressure sensor brackets (25) passes
Sensor (10) and the height of 2 bugle call pressure sensors (11) and the axial line of tested speed changer (9) input shaft (6) are contour, pass through No. 4
Vertical range of the 4 bugle call pressure sensors (13) away from noise absorption cover (22) the top of sound pressure sensor bracket (23) installation is 50mm；
3 bugle call pressure sensor (12) faces right above tested speed changer (9) are tested the rotating shaft of speed changer (9) input shaft (6)
Heart line；
The fixed block (24-3) is cuboid structural member, is provided with smooth bolt hole on the right side of fixed block (24-3),
The size in its aperture is equal with the outer diameter of No. 2 screws (24-5), and the lower end of fixed block (24-3) is vertically provided with smooth cylindrical
The smooth cylindrical hole in hole, the lower end fixed block (24-3) is connected with the smooth bolt hole on the right side of fixed block (24-3)；
It is arranged radially the perforative threaded hole in " ten " font to the upper end edge of the core pin (24-4), threaded hole it is outer
Diameter is equal with the internal diameter of bolt hole on the right side of fixed block (24-3), the axis of rotation and the spiral shell on the right side of fixed block (24-3) of threaded hole
The rotation conllinear of keyhole, the structure size of threaded hole is identical as the structure size of No. 2 screws (24-5), core pin (24-4)
Outer diameter it is identical as the internal diameter of light cylindrical hole of the lower end fixed block (24-3), and the hole depth of light cylindrical hole not with fixed block (24-
3) internal thread hole on the left of intersects perforation；
The pedestal (8-2) is rectangular plate structural member, in the middle of the one end pedestal (8-2) and indulging along pedestal (8-2)
To " convex " font groove (8- for being provided with " convex " the font footing to accommodate output end fixed bracket (8-8) being parallel to each other
9), the left end of " convex " font groove (8-9) opens up；
The input terminal fixed plate (8-3) is rectangular plate structural member, and the upper end of input terminal fixed plate (8-3) is provided with input
Port (8-5) has been evenly distributed fixed plate screw hole (8-4) around input port (8-5), and input port (8-5) diameter is small
In the maximum inner diameter of tested speed changer (9) input end housing；
The output end fixed bracket (8-8) is " people " font bracket, two footing and pedestal of output end fixed bracket (8-8)
The shape of two " convex " font grooves (8-9) on (8-2) is identical, and the top of output end fixed bracket (8-8) is along the vertical direction
There are two the identical fixed bracket screw holes (8-8-1) of structure for setting；
The output end fixed ring (8-6) is attached together together using two semicircle rings, and is fixed using bolt；Output
Hold the bottom of fixed ring (8-6) lower half annulus that two fixed rings immersed oneself in corresponding with fixed bracket screw hole (8-8-1) are set
Screw hole (8-6-2)；
Install one piece and the top output end fixed bracket (8-8) between output end fixed ring (8-6) and output end fixed bracket (8-8) additional
The horizontal positioned gasket (8-7) that the shape of end face is identical, size is equal, along vertical on horizontal positioned gasket (8-7)
Direction is arranged two and fixes the hole that bracket screw hole (8-8-1) matches with fixed ring screw hole (8-6-2) structure size.
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| CN105784357B true CN105784357B (en) | 2019-04-16 |
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