CN107860567A - Automobile engine wheel train part noise fest platform - Google Patents
Automobile engine wheel train part noise fest platform Download PDFInfo
- Publication number
- CN107860567A CN107860567A CN201710995790.5A CN201710995790A CN107860567A CN 107860567 A CN107860567 A CN 107860567A CN 201710995790 A CN201710995790 A CN 201710995790A CN 107860567 A CN107860567 A CN 107860567A
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- CN
- China
- Prior art keywords
- train part
- automobile engine
- drive system
- flat board
- load system
- Prior art date
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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
Abstract
The invention discloses a kind of automobile engine wheel train part noise fest platform,Including drive system,Transmission belt,Pipeline,Microphone array,Flat board is installed,Load system,Control system and semianechoic room,Load system includes compressor refrigerant circulation load system,Generator electronic load system and water pump coolant repeated loading system,Installation flat board is used to install train part to be measured,Microphone array is used to installing and fixing microphone,Flat board is installed and microphone array is arranged in semianechoic room,Microphone array is located at the center of semianechoic room,Train part to be measured is located at the center of microphone array,Drive system and load system are located at outside semianechoic room,Drive system drives train part to be measured by transmission belt,Load system is connected by pipeline with train part to be measured,Control system is used to control drive system and load system.The present invention can carry out noise testing under strict semianechoic room environment, and meet the noise testing of a variety of train parts.
Description
Technical field
The present invention relates to noise fest field, more particularly to a kind of automobile engine wheel train part noise fest platform.
Background technology
With the increase that client is required car comfort, the vibration of automobile and noiseproof feature increasingly by vehicle factor and
The attention of client.Automobile engine wheel train part, such as compressor, generator and water pump part are most important in addition to engine
Vibration and noise source, and under Part load, client can substantially recognize the noise as caused by train part in the car,
Such as the compressor adhesive noise under idling operation, the compressor howling under driving cycle, the generator of moment is started or stoped
High frequency howling, water pump abnormal sound during idling etc..Engine is especially continuously improved and reduced along with major vehicle factor
Background noise, the more aobvious protrusion of engine wheel system part noise problem.
In order to further investigate the noise characteristic of engine wheel system part and noise control method, it is necessary to according to test specification pair
Engine wheel system part is effectively tested and verified.The test of engine wheel system part at present is broadly divided into project and entered in early days
The vehicle level experiment that capable part level experiment and project later stage are carried out, wherein vehicle level experiment are only used for finally evaluating train zero
Influence of the part noise to client's comfortableness, if necessary to study the mechanism of production of train part noise and work out feasible noise reduction
Scheme, it is necessary to carry out the bench test for corresponding to operating mode according to specification simulation vehicle and carrying out part level.Train zero main at present
Corresponding part level noise fest platform is had in part supplier, and the drive system of simulated automotive engine is arranged on by the testing stand
In the sound proof box of anechoic room, the plane of reflection is housed above sound proof box, train part is arranged on the plane of reflection and positioned at biography
The center of sound device array.But these stands can not all ensure to carry out the platform of train part under strict semianechoic room environment
Frame is tested, and function is single, and single stand can not meet the bench test of all train parts.
Therefore, it is necessary to designing a kind of can carry out more accurate and reliable noise under strict semianechoic room environment and survey
Examination, and meet the automobile engine wheel train part noise fest platform of vibration and the noise testing of a variety of train parts.
The content of the invention
It is an object of the invention to provide it is a kind of can be carried out under strict semianechoic room environment it is more accurate and reliable
Noise testing, and meet the automobile engine wheel train part noise fest platform of vibration and the noise testing of a variety of train parts.
Technical scheme provides a kind of automobile engine wheel train part noise fest platform, including drive system, biography
Dynamic band, pipeline, microphone array, installation flat board, load system and control system, in addition to semianechoic room, the load system
Including compressor refrigerant circulation load system, generator electronic load system and water pump coolant repeated loading system, the peace
Dress flat board is used to install train part to be measured, and the microphone array is used to installing and fixing microphone, the installation flat board
It is arranged on the microphone array in the semianechoic room, the microphone array is located at the center of the semianechoic room, institute
The center that train part to be measured is located at the microphone array, the drive system and the load system are stated positioned at described half
Outside anechoic room, the drive system drives the train part to be measured by the transmission belt, and the load system passes through
The pipeline is connected with the train part to be measured, and the control system is used to control the drive system and the load system
System.
Further, in addition to vibro-damping mount, the drive system are arranged on the vibro-damping mount.
Further, in addition to flat base, the installation flat board are arranged on the flat base, the flat base
It is embedded in the center of mattess.
Further, in addition to sound insulating pad, the sound insulating pad are fixed on the lower surface of the flat base, and positioned at described
The top of drive system.
Further, the flat base further comprises：Bedplate, annular vibration isolator, spill movable panel and E shapes every
Sound plate, the bedplate are embedded in the mattess by the annular vibration isolator, the spill movable panel installation
On the bedplate, the E shapes sound insulationg board is fixed in the recess of the spill movable panel, and the installation flat board is arranged on
Contacted on the bedplate and with the E shapes sound insulationg board.
Further, the flat base also includes：Installation and adjustment hole, generator both positive and negative polarity terminals, compressor suction
Air pipe interface and water pump intake-discharge pipe interface, the installation flat board are connected by the installation and adjustment hole with the bedplate.
Further, the drive system further comprises：Drive sound proof box, motor, motor sound panel, connection
Axle device, output pulley and torque sensor, the motor are arranged on the bottom surface of the driving sound proof box, the motor
Sound panel is arranged between top surface and the bottom surface of the driving sound proof box, and the output shaft of the motor is electric through the driving
Machine sound panel, the output shaft are connected by the shaft coupling with the torque sensor and the output pulley, the output
Belt wheel is used to connect the transmission belt.
Further, the belt stretcher of the tensile force for controlling the transmission belt, the belt tension are included
The radial center face of the tensioning wheel of device and the radial center face of the output pulley of the drive system are generally aligned in the same plane.
Further, the belt stretcher further comprises：Axle, tapered sleeve, air bearing, mounting bracket, power sensing
Device and propulsion plant, wherein the tensioning wheel is installed on the shaft by the tapered sleeve, the axle passes through the air bearing
In the mounting bracket, the both ends of the force snesor connect the propulsion plant and the mounting bracket respectively.
Further, the control system further comprises host computer, data collecting card, PLC control modules, pwm signal
Generator, voltage-stabilized power supply and human-computer interaction module, wherein the host computer occurs with the PLC control modules, the pwm signal
Device and voltage-stabilized power supply communication are connected.
After adopting the above technical scheme, have the advantages that：
1) function integrates
By sharing the drive system for simulated engine, single stand can be realized including compressor, generator and water
The vibration and noise testing of the engine wheel system part of pump.
2) accuracy is high
By the isolation to drive system and load system, train part only to be measured is arranged in semianechoic room, is entered
And it ensure that the accuracy and reliability of test result.
3) possesses the analog capability of real vehicle operating mode
Compressor refrigerant circulation load system can simulate pressure, temperature and flow of the refrigerant in vehicle circulates overall process will
Ask, and possess machine oil concentration detection and control function in real time.Generator electronic load system can simulate Electronic Negative under vehicle operating mode
Carry consumed voltage and current.Water pump coolant repeated loading system can simulate pressure of the coolant in vehicle circulates overall process
Power and temperature requirement.
Brief description of the drawings
Referring to accompanying drawing, the disclosure will be easier to understand.It should be understood that：These accompanying drawings are merely illustrative
Purpose, and be not intended to and protection scope of the present invention be construed as limiting.In figure：
Fig. 1 is the front view of automobile engine wheel train part noise fest platform in one embodiment of the invention；
Fig. 2 is the top view of the flat base of automobile engine wheel train part noise fest platform in one embodiment of the invention；
Fig. 3 is the front view of the drive system of automobile engine wheel train part noise fest platform in one embodiment of the invention；
Fig. 4 is the left view of the drive system of automobile engine wheel train part noise fest platform in one embodiment of the invention；
Fig. 5 is the vertical view of the belt stretcher of automobile engine wheel train part noise fest platform in one embodiment of the invention
Figure；
Fig. 6 is the compressor refrigerant circulation load of automobile engine wheel train part noise fest platform in one embodiment of the invention
The schematic diagram of system；
Fig. 7 is the generator electronic load system of automobile engine wheel train part noise fest platform in one embodiment of the invention
Schematic diagram；
Fig. 8 is the water pump coolant repeated loading of automobile engine wheel train part noise fest platform in one embodiment of the invention
The schematic diagram of system；
Fig. 9 is the schematic diagram of the control system of automobile engine wheel train part noise fest platform in one embodiment of the invention；
Figure 10 is the workflow diagram of automobile engine wheel train part noise fest platform in one embodiment of the invention.
The reference table of comparisons：
1-vibro-damping mount；2-drive system；3-transmission belt；
4-sound insulating pad；5-flat base；6-pipeline；
7-semianechoic room；8-microphone array；9-train part to be measured；
10-installation flat board；11-belt stretcher；12-compressor refrigerant circulation load system；
13-generator electronic load system；14-water pump coolant repeated loading system；
15-mattess
2-1-driving sound proof box；2-2-motor；2-3-motor sound panel；
2-4-shaft coupling；2-5-output pulley；2-6-torque sensor；
5-1-bedplate；5-2-annular vibration isolator；5-3-spill movable panel；
5-4-E shape sound insulationg boards；5-6-installation and adjustment hole；5-7-generator both positive and negative polarity terminals；
5-8-compressor suction air pipe interface；5-9-water pump intake-discharge pipe interface；
11-1-axle；11-2-tapered sleeve；11-3-tensioning wheel；
11-4-air bearing；11-5-mounting bracket；11-6-force snesor；
11-7-propulsion plant；12-1-machine oil density Adjusting System；
12-2-condensation regulating system；12-3-cold medium flux detecting system；
12-4-machine oil concentration detection system；12-5-electric expansion valve；
12-6-evaporator two level heating load system；
13-1-electronic load box；13-2-batteries；13-3-current sensor；
14-1-water-filled radiator；14-2-thermostat；14-3-expansion tank.
Embodiment
Below in conjunction with the accompanying drawings come further illustrate the present invention embodiment.
It is readily appreciated that, technique according to the invention scheme, in the case where not changing true spirit, the general skill of this area
The various structures mode and implementation that art personnel can mutually replace.Therefore, detailed description below and accompanying drawing are only
To the exemplary illustration of technical scheme, and it is not to be construed as the whole of the present invention or is considered as to inventive technique scheme
Define or limit.
Mention in this manual or may mention up, down, left, right, before and after, front, the back side, top, bottom etc.
Orientation term is defined relative to the construction shown in each accompanying drawing, and they are relative concepts, and it is therefore possible to can root
Correspondingly changed according to its residing diverse location, different use states.So also should not be by these or others side
Position term is construed to restricted term.
In the present embodiment, as shown in figure 1, automobile engine wheel train part noise fest platform, including drive system 2, transmission
Band 3, pipeline 6, microphone array 8, installation flat board 10, load system and control system (not shown), in addition to semianechoic room 7,
Load system includes compressor refrigerant circulation load system 12, generator electronic load system 13 and water pump coolant repeated loading
System 14, installation flat board 10 are used to install train part 9 to be measured, and microphone array 8 is used to installing and fixing microphone, installed
Flat board 10 and microphone array 8 are arranged in semianechoic room 7, and microphone array 8 is located at the center of semianechoic room 7, wheel to be measured
It is the center that part 9 is located at microphone array 8, drive system 2 and load system are located at outside semianechoic room 7, and drive system 2 passes through
Transmission belt 3 drives train part 9 to be measured, and load system is connected by pipeline 6 with train part 9 to be measured, control system
For controlling drive system 2 and load system.
Specifically, drive system 2, positioned at the underface of installation flat board 10, drive system 2 is driven to be measured by transmission belt 3
Train part 9.Drive system 2 provides power for train part 9 to be measured, for simulating train part to be measured at the trial
9 working condition in real vehicle.
Pipeline 6 is used to connect train part 9 and load system to be measured.When the wheel that train part 9 to be measured is compressor
When being part, pipeline 6 is connected with compressor refrigerant circulation load system 12；When the train that train part 9 to be measured is generator
During part, pipeline 6 is connected with generator electronic load system 13；When train part 9 to be measured is the train part of water pump, pipe
Road 6 is connected with water pump coolant repeated loading system 14.
Semianechoic room 7 is used to simulate noise elimination situation of the real vehicle to train part.
Microphone array 8 is used to installing and fixing microphone, and microphone is used to transmit to make an uproar caused by train part 9 to be measured
Sound.
Installation flat board 10 is used to install train part 9 to be measured, and installs flat board 10 and also be located at the interior of semianechoic room 7
Portion.
Load system includes three kinds, respectively compressor refrigerant circulation load system 12, generator electronic load system 13
With water pump coolant repeated loading system 14.Load system also is located at outside semianechoic room 7, and three kinds of load systems correspond to not respectively
The experiment of same train part.
The present embodiment has the advantages that：
1) function integrates
Due to by sharing the drive system for simulated engine, and there are three kinds of load systems, single stand can
Realize the vibration and noise testing for the engine wheel system part for including compressor, generator and water pump.
2) accuracy is high
By the isolation to drive system and load system, drive system and load system are specially isolated in half noise elimination
Outside room, train part only to be measured is arranged in semianechoic room, and then ensure that the accuracy and reliability of test result.
3) possesses the analog capability of real vehicle operating mode
Compressor refrigerant circulation load system can simulate pressure, temperature and flow of the refrigerant in vehicle circulates overall process will
Ask, and possess machine oil concentration detection and control function in real time.Generator electronic load system can simulate Electronic Negative under vehicle operating mode
Carry consumed voltage and current.Water pump coolant repeated loading system can simulate pressure of the coolant in vehicle circulates overall process
Power and temperature requirement.
Further, as shown in figure 1, also including vibro-damping mount 1, drive system 2 is arranged on vibro-damping mount 1.
Specifically, vibro-damping mount 1 is located at the bottom, and it is arranged on positioned at the underface of installation flat board 10, drive system 2
On vibro-damping mount 1, vibro-damping mount 1 plays a part of isolating extraneous vibration interference, allows drive system 2 not by extraneous vibration
The rotating speed and torque that simulated engine exports in the case of interference.
Further, as shown in figure 1, also including flat base 5, installation flat board 10 is arranged on flat base 5, flat board bottom
Seat 5 is embedded in the center of mattess 15.
Installation flat board 10 arranges that flat base 5 is also arranged in the horizontal direction in the horizontal direction, and 5 installations of flat base are flat
Plate 10 provides reference for installation, ensures the level orientation of installation flat board 10, also ensures that the orientation of train part 9 to be measured.
Mattess 15 is located at the surrounding of flat base 5, and the circle of periphery one of flat base 5 is embedded into mattess 15
In, the upper surface of flat base 5 is located in semianechoic room 7, and towards drive system 2, flat base 5 also acts as isolation and driven for lower surface
Dynamic system 2 and the effect of semianechoic room 7.
Further, as shown in figure 1, also including sound insulating pad 4, sound insulating pad 4 is fixed on the lower surface of flat base 5, and position
In the top of drive system 2.
Sound insulating pad 4 is used for the noise of isolation drive system 2, prevents the noise of drive system 2 to the influence of result of the test.
Further, as shown in Fig. 2 flat base 5 further comprises：Bedplate 5-1, annular vibration isolator 5-2, spill can
Movable plate 5-3 and E shape sound insulationg board 5-4, bedplate 5-1 are embedded in mattess 15 by annular vibration isolator 5-2, and spill can
Movable plate 5-3 is arranged on bedplate 5-1, and E shape sound insulationg boards 5-4 is fixed in spill movable panel 5-3 recess, installs flat board
10 are arranged on bedplate 5-1 and are contacted with E shape sound insulationg boards 5-4.
Specifically, bedplate 5-1 is circular flat board, installation flat board 10 is rectangular flat, and the area for installing flat board 10 is small
In bedplate 5-1 area, installation flat board 10 is installed substantially at bedplate 5-1 center.
Annular vibration isolator 5-2 is annular, and on bedplate 5-1 circumference, annular vibration isolator 5-2 is embedded in mixed
In solidifying soil face 15.
Spill movable panel 5-3 can be arranged on bedplate 5-1 by bolt, and is located at the top of installation flat board 10,
Spill movable panel 5-3 lower side offers recess, and E shape sound insulationg board 5-4, E shape sound insulationg boards 5-4 is provided with recess to be passed through
It is bolted in spill movable panel 5-3, E shape sound insulationg board 5-4 contact with installing the upper side edge of flat board 10.
As shown in Fig. 2 transmission belt 3 passes through E shape sound insulationg boards 5-4 space, upper table is entered from the lower surface of flat base 5
Face, and be connected with train part 9 to be measured.Here " upper surface " and " lower surface " is for Fig. 1 orientation.
E shape sound insulationg boards 5-4 will ensure that transmission belt 3 passes through, and not interfered with transmission belt 3, ensure again between transmission belt 3
Space it is minimum, the noise for reducing the lower surface of flat base 5 as far as possible is passed to upper surface, reduces the noise of drive system 2 to experiment
As a result influence.
Further, as shown in Fig. 2 flat base also includes：Installation and adjustment hole 5-5, generator both positive and negative polarity terminals 5-
6th, compressor suction air pipe interface 5-7 and water pump intake-discharge pipe interface 5-8, installation flat board 10 pass through installation and adjustment hole 5-5 and bottom
Seat board 5-1 connections.
Specifically, installation flat board 10 is fixed on bedplate 5-1 by bolt through installation and adjustment hole 5-5 and installation flat board 10
On.
And generator both positive and negative polarity terminals 5-6, compressor suction air pipe interface 5-7 and water pump intake-discharge pipe interface 5-8 are
Respectively with compressor refrigerant circulation load system 12, generator electronic load system 13 and water pump coolant repeated loading system 14
The terminal or interface of connection.Each load system is set to be connected with corresponding train part 9 to be measured.
Further, as shown in Figure 3-4, drive system 2 further comprises：Drive sound proof box 2-1, motor 2-2, drive
Dynamic motor sound panel 2-3, shaft coupling 2-4, output pulley 2-5 and torque sensor 2-6, motor 2-2 be arranged on driving every
Audio amplifier 2-1 bottom surface, motor sound panel 2-3 are arranged between driving sound proof box 2-1 top surface and bottom surface, motor 2-
2 output shaft passes through motor sound panel 2-3, and output shaft passes through shaft coupling 2-4 and torque sensor 2-6 and output pulley 2-
5 connections, output pulley 2-5 are used to connect transmission belt 3.
Specifically, driving sound proof box 2-1 is used to absorb and isolate noise, driving sound proof box 2-1 includes main frame and Quick Release
Panel, and the inner surface of Quick Release panel is fixed with acoustical cotton.
Motor 2-2 is water cooling driving motor, is fixed on driving sound proof box 2-1 bottom surface, and entered by coolant
Row cooling.
Motor sound panel 2-3 for isolation drive motor 2-2 running noises is fixed on driving sound proof box 2-1 bottom
Between face and top surface, and the diameter of output shaft of the central opening diameter more than motor 2-2, motor sound panel 2-3's
Central opening is in order to which the output shaft for motor 2-2 passes through, with shaft coupling 2-4, output pulley 2-5 and torque sensor 2-
6 connections.
Shaft coupling 2-4 for transmitting moment of torsion couples motor 2-2 output shaft and torque sensor 2-6, and shaft coupling
Device 2-4 axis and the axis of motor 2-2 output shafts are respectively positioned on same straight line.
For the torque sensor 2-6 for the output torque for measuring motor 2-2, the bottom for driving sound proof box 2-1 is fixed on
On face, and it is bolted shaft coupling 2-4 and output pulley 2-5.Torque sensor 2-6 is for the ease of motor 2-2 moulds
Intend the engine of real vehicle.
Same straight line is respectively positioned on for the output pulley 2-5 of output torque axis and shaft coupling 2-4 axis.Make
Will not skid between part, infringement is small, measurement is more accurate.
Further, as shown in figure 5, also including the belt stretcher 11 for being used to control the tensile force of transmission belt 3, belt
The tensioning wheel 11-3 of tensioning apparatus 11 radial center face and the output pulley 2-5 of drive system 2 radial center face are positioned at same
One plane.
Meanwhile as shown in Figure 1 and Figure 4, output pulley 2-5 and train part 9 to be measured radial center face also are located at together
One plane, i.e. transmission belt 3 connect tensioning wheel 11-3, output pulley 2-5 and train part 9 to be measured in the same plane.Output
Belt wheel 2-5 passes to the power of drive system 2 train part 9 to be measured by transmission belt 3, and tensioning wheel 11-3 is used to accurately control
The tensile force of transmission belt 3 processed.
Further, as shown in figure 5, belt stretcher 11 further comprises：Axle 11-1, tapered sleeve 11-2, air bearing
11-4, mounting bracket 11-5, force snesor 11-6 and propulsion plant 11-7, wherein tensioning wheel 11-3 are arranged on by tapered sleeve 11-2
On axle 11-1, axle 11-1 is arranged on mounting bracket 11-5 by air bearing 11-4, and force snesor 11-6 both ends connect respectively
Meet propulsion plant 11-7 and mounting bracket 11-5.
Tensioning wheel is reduced using contactless air bearing 11-4 due to the tensioning wheel 11-3 of belt stretcher 11
11-3 running noises, further increase signal to noise ratio when train part to be measured carries out vibration and noise testing.
It is preferred that as shown in fig. 6, compressor refrigerant circulation load system 12 includes machine oil density Adjusting System 12-1, it is cold
Solidifying regulating system 12-2, cold medium flux detecting system 12-3, machine oil concentration detection system 12-4, electric expansion valve 12-5 and evaporation
Device two level heating load system 12-6.Wherein, machine oil density Adjusting System 12-1 is used to simulate real vehicle machine oil concentration, and adjusts in real time
Refrigerant machine oil concentration is saved, machine oil density Adjusting System 12-1 is connected with the air entry and exhaust outlet of compressor respectively, and major cycle
Loop is in parallel.
It is preferred that as shown in fig. 7, generator electronic load system 13 includes electronic load box 13-1, batteries 13-2
With current sensor 13-3, wherein being connected in parallel for the electronic load box 13-1 and batteries 13-2 for consuming electric energy, it is used for
Measure generator and current sensor 13-3 and electronic load box 13-1 and batteries the 13-2 string of batteries output current
Connection connection.
It is preferred that as shown in figure 8, water pump coolant repeated loading system 14 includes water-filled radiator 14-1, electronics section temperature
Device 14-2 is adjustable, expansion tank 14-3, temperature sensor, wherein selecting coolant circulation loop according to coolant temperature
Thermostat 14-1 connects with the connecting tube of unit fixed on water pump suction.
It is preferred that as shown in figs. 9-10, control system further comprise host computer, data collecting card, PLC control modules,
PWM signal generator, voltage-stabilized power supply and human-computer interaction module, wherein the host computer and the PLC control modules, the PWM
Signal generator and voltage-stabilized power supply communication are connected.
The operation principle of the present embodiment as shown in figure 9, host computer by controlling PWM signal generator module and voltage-stabilized power supply
To control the setting of the adhesive of train part clutch and fan-out capability, and followed by data collecting card come collect and process machine refrigerant
Pressure, temperature and flow signal in ring load system, the voltage and current signal in generator electronic load system, water pump are cold
But the pressure and temperature signal in liquid repeated loading system, then born by data collecting card output control signal to generator electronic
Loading system and water pump coolant repeated loading system.PLC control modules collection drive system speed probe, hide tensioning apparatus
Force snesor, compressor air suction and back pressure transducer and machine oil concentration detection sensor, and by controlling driving electricity in real time
Machine, belt stretcher, compressor coolant circulating system and machine oil density Adjusting System carry out rotating speed, belt tension, pressure
The real-time control of contracting machine air-breathing and pressure at expulsion and machine oil concentration.
As shown in Figure 10, the test method of automobile engine wheel train part noise fest platform comprises the following steps：
1st, train part to be measured and transmission belt installation
Train part 9 to be measured is fixed on installation flat board 10, and by adjusting installation flat board 10 at flat board bottom
Seat 5 in position by train part belt wheel and motor output pulley 2-5 axially and radially misalignment control 1 degree with
It is interior, then transmission belt 3 is installed.
2nd, initialize
After electric power starting, system initialization, host computer and drive belt tensioning apparatus 11, PLC control modules, PWM believe
Number generator and voltage-stabilized power supply establish communication connection.
3rd, Selection experiment type
Selection be compressed machine, generator or pump test, after the completion of selection, system will enter compressor, generator or
Experiment interface corresponding to water pump.
4th, belt tension controls
User inputs the desired value and alarming value of belt tension, and system is scaled force snesor 11-6 mesh according to demarcation
Scale value, and by controlling propulsion plant 11-7 displacement come the accurate tensile force for controlling belt.
5th, load system parameter setting
For the compressor in engine wheel system part, input compressor refrigerant circulation in software according to measurement condition and bear
The pressure at expulsion of loading system 12, the degree of superheat, degree of supercooling, the alarming value of expansion valve opening and machine oil concentration, setting value and permission
Deviation.For the generator in engine wheel system part, generator electronic load system is inputted in software according to measurement condition
The alarming value of 13 voltages consumed or electric current, setting value and the deviation of permission.For the water pump in engine wheel system part, root
The water temperature and the alarming value of hydraulic pressure that are inputted in software according to measurement condition in water pump coolant repeated loading system 14, setting value and
The deviation of permission.
6. drive system parameters are set
According to measurement condition, the control requirement and alarming value requirement to motor 2-2 rotating speeds are inputted in software.
7. configuration processor
Operation test program, load system and drive system 2 bring into operation.
8. judge system whether normal work
The report to load system, drive system 2 and the relevant parameter of belt stretcher 11 that host computer inputs according to user
Alert value require judge system whether normal work, once having detected that parameter exceeds alarming value requirement, system stops work immediately
Make.
9. waiting system is stable
PLC control system inputs to the setting value of load system relevant parameter and to motor in software according to user
The control of 2-2 rotating speeds is required to control load system and motor in real time.
10. data storage and report generation
When the control parameter of load system, drive system and belt stretcher stablizes the deviation model allowed in setting value
In enclosing, and when the stable time exceedes setting value, system will gather and store load system, drive system 2 and belt stretcher
The data that all the sensors export in 11.In addition user can be with real time inspection measurement result by software, and filters out required
Data generation report.
The invention has the advantages that：
1) function integrates
By sharing the drive system for simulated engine, single stand can be realized including compressor, generator and water
The vibration and noise testing of the engine wheel system part of pump.
2) accuracy is high
By the isolation to drive system and load system, train part only to be measured is arranged in semianechoic room, is entered
And it ensure that the accuracy and reliability of test result.
3) possesses the analog capability of real vehicle operating mode
Compressor refrigerant circulation load system can simulate pressure, temperature and flow of the refrigerant in vehicle circulates overall process will
Ask, and possess machine oil concentration detection and control function in real time.Generator electronic load system can simulate Electronic Negative under vehicle operating mode
Carry consumed voltage and current.Water pump coolant repeated loading system can simulate pressure of the coolant in vehicle circulates overall process
Power and temperature requirement.
4) signal to noise ratio is high
Drive system is arranged on vibro-damping mount, simulated engine can be exported in the case where not disturbed by extraneous vibration
Rotating speed and torque, the tensioning wheel of belt stretcher made an uproar using contactless air bearing to reduce the operation of tensioning wheel
Sound, further increase signal to noise ratio when train part carries out vibration and noise testing.
Above-described is only the principle and preferred embodiment of the present invention.It should be pointed out that the common skill for this area
For art personnel, on the basis of the principle of the invention, some other modifications can also be made, also should be regarded as the protection model of the present invention
Enclose.
Claims (10)
1. a kind of automobile engine wheel train part noise fest platform, including drive system, transmission belt, pipeline, microphone array, peace
Fill flat board, load system and control system, it is characterised in that also including semianechoic room, it is cold that the load system includes compressor
Matchmaker's repeated loading system, generator electronic load system and water pump coolant repeated loading system, the installation flat board are used to pacify
Train part to be measured is filled, the microphone array is used to installing and fixing microphone, the installation flat board and the microphone
Array is arranged in the semianechoic room, and the microphone array is located at the center of the semianechoic room, the train to be measured
Part is located at the center of the microphone array, and the drive system and the load system are located at outside the semianechoic room, institute
State drive system and the train part to be measured is driven by the transmission belt, the load system passes through the pipeline and institute
Train part connection to be measured is stated, the control system is used to control the drive system and the load system.
2. automobile engine wheel train part noise fest platform according to claim 1, it is characterised in that also including vibration isolation base
Seat, the drive system are arranged on the vibro-damping mount.
3. automobile engine wheel train part noise fest platform according to claim 1, it is characterised in that also including flat board bottom
Seat, the installation flat board are arranged on the flat base, and the flat base is embedded in the center of mattess.
4. automobile engine wheel train part noise fest platform according to claim 3, it is characterised in that also including sound insulation
Pad, the sound insulating pad are fixed on the lower surface of the flat base, and positioned at the top of the drive system.
5. automobile engine wheel train part noise fest platform according to claim 3, it is characterised in that the flat base
Further comprise：Bedplate, annular vibration isolator, spill movable panel and E shape sound insulationg boards, the bedplate by it is described annular every
The pad that shakes is embedded in the mattess, and the spill movable panel is arranged on the bedplate, and the E shapes sound insulationg board is consolidated
Be scheduled in the recess of the spill movable panel, it is described installation flat board be arranged on the bedplate on and with the E shapes sound insulationg board
Contact.
6. automobile engine wheel train part noise fest platform according to claim 5, it is characterised in that the flat base
Also include：Installation and adjustment hole, generator both positive and negative polarity terminals, compressor suction air pipe interface and water pump intake-discharge pipe interface, institute
Installation flat board is stated to be connected with the bedplate by the installation and adjustment hole.
7. automobile engine wheel train part noise fest platform according to claim 1, it is characterised in that the drive system
Further comprise：Drive sound proof box, motor, motor sound panel, shaft coupling, output pulley and torque sensor, institute
The bottom surface that motor is arranged on the driving sound proof box is stated, the motor sound panel is arranged on the driving sound proof box
Between top surface and bottom surface, the output shaft of the motor passes through the motor sound panel, and the output shaft passes through described
Shaft coupling is connected with the torque sensor and the output pulley, and the output pulley is used to connect the transmission belt.
8. automobile engine wheel train part noise fest platform according to claim 7, it is characterised in that also include being used to control
Make the belt stretcher of the tensile force of the transmission belt, the radial center face of the tensioning wheel of the belt stretcher and described
The radial center face of the output pulley of drive system is generally aligned in the same plane.
9. automobile engine wheel train part noise fest platform according to claim 8, it is characterised in that the belt tension
Device further comprises：Axle, tapered sleeve, air bearing, mounting bracket, force snesor and propulsion plant, wherein the tensioning wheel leads to
Cross the tapered sleeve installation on the shaft, the axle is arranged in the mounting bracket by the air bearing, and the power passes
The both ends of sensor connect the propulsion plant and the mounting bracket respectively.
10. the automobile engine wheel train part noise fest platform according to claim any one of 1-9, it is characterised in that institute
State control system and further comprise host computer, data collecting card, PLC control modules, PWM signal generator, voltage-stabilized power supply and people
Machine interactive module, wherein the host computer leads to the PLC control modules, the PWM signal generator and the voltage-stabilized power supply
Letter is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710995790.5A CN107860567A (en) | 2017-10-23 | 2017-10-23 | Automobile engine wheel train part noise fest platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710995790.5A CN107860567A (en) | 2017-10-23 | 2017-10-23 | Automobile engine wheel train part noise fest platform |
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| CN107860567A true CN107860567A (en) | 2018-03-30 |
Family
ID=61696198
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710995790.5A Pending CN107860567A (en) | 2017-10-23 | 2017-10-23 | Automobile engine wheel train part noise fest platform |
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Application publication date: 20180330 |