CN106401937B - Oil pump noise test equipment and test method - Google Patents
Oil pump noise test equipment and test method Download PDFInfo
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- CN106401937B CN106401937B CN201610875649.7A CN201610875649A CN106401937B CN 106401937 B CN106401937 B CN 106401937B CN 201610875649 A CN201610875649 A CN 201610875649A CN 106401937 B CN106401937 B CN 106401937B
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- oil pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of oil pump noise test equipments comprising pedestal support frame, pedestal support cylinder, vibrating sensor unit；Oil pump upper end suspension to be measured is fixed；Pedestal support frame is moved up and down with the flexible of pedestal support ejecting rod of cylinder；Pedestal support frame supports oil pump to be measured when being moved to upper end；Pedestal support frame be moved to when lower end oil pump to be measured with pedestal support frame separate and in vacant state；Vibrating sensor unit can combine installation and be fixed on oil pump case to be measured；Vibrating sensor unit is for detecting output vibration signal.The invention also discloses a kind of oil pump noise test method, oil pump noise test equipment of the invention and test method can accurately reflect the real standard of oil pump noise to be measured.
Description
Technical field
The present invention relates to vehicle performance test technology, in particular to a kind of oil pump noise test equipment and test method.
Background technique
In recent years, vehicle factor requires to step up to performance of the oil pump in vehicle, making an uproar during operation of oil pump
Sound shows a key index as vehicle performance, is increasingly paid attention to by vehicle factor.And index test relevant to noise
Problem always in auto manufacturing.Traditional test method be after oil pump is installed to vehicle, it is idle in locomotive by human ear
It reflects under fast state and the size of oil pump noise is judged otherwise.This mode not only can not accurately reflect that oil pump is made an uproar
The real standard of sound, and even if discovery oil pump has noise problem, product entrucking, then it is replaced also complex.
Summary of the invention
The technical problem to be solved by the present invention is to can accurately reflect the real standard of oil pump noise to be measured.
In order to solve the above technical problems, oil pump noise test equipment provided by the invention comprising pedestal support frame, pedestal
Support cylinder, vibrating sensor unit；
Oil pump upper end suspension to be measured is fixed；
The pedestal support frame is moved up and down with the flexible of pedestal support ejecting rod of cylinder；
When the pedestal support frame is moved to upper end, the oil pump to be measured is supported；
When the pedestal support frame is moved to lower end, oil pump to be measured separates with the pedestal support frame and is in hanging shape
State；
The vibrating sensor unit can combine installation and be fixed on oil pump case to be measured；
The vibrating sensor unit, for detecting output vibration signal.
Preferably, the vibrating sensor unit includes acceleration transducer, magnet, bracket；
The acceleration transducer and magnet, which are respectively mounted, to be fixed on the bracket；
Oil pump case to be measured is magnetic conductive material；
The vibrating sensor unit is fixed on oil pump case to be measured by the adsorption capacity combination installation of magnet.
Preferably, oil pump case to be measured is cylinder, vibrating sensor unit front end is matched with oil pump case to be measured
Conjunction face is arc surface.
Preferably, the magnet is fixed on the bracket front end；
The magnet and the bracket front end collectively form vibrating sensor unit front end with oil pump case to be measured
Mating surface.
Preferably, the acceleration transducer is three-dimensional acceleration transducer.
Preferably, oil pump noise test equipment further includes oil supply tank, guide pad, flange；
The flange is for being fixed on fuel tank；
The oil supply tank is fixed on the flange；
The guide pad is fixed on the oil supply tank outer wall；
The pedestal support cylinder is fixed on the flange, and the mandril of the pedestal support cylinder is along the guide pad
Guide rail stretching motion.
Preferably, the guide pad is drum guide pad.
Preferably, oil pump noise test equipment further includes clamping jaw, bracket gripper cylinder, push cylinder；
The bracket gripper cylinder is fixed on the mandril of the push cylinder；
The clamping jaw is driven by the bracket gripper cylinder；
When preparing to carry out noise test to oil pump to be measured, the clamping jaw closure clamps the vibrating sensor unit；When
The pedestal support frame, which moves down, makes oil pump to be measured be in vacant state, and the mandril of the push cylinder stretches out, and drives bracket
Gripper cylinder, clamping jaw push vibrating sensor unit to oil pump to be measured, and then bracket gripper cylinder driving clamping jaw opens release vibration
Dynamic sensor unit, so that the combination installation of vibrating sensor unit be made to be fixed on oil pump case to be measured；Then the push gas
The mandril of cylinder retracts, and drives bracket gripper cylinder, clamping jaw far from oil pump to be measured；
It carries out noise test to oil pump to be measured to finish, the mandril of the push cylinder stretches out, and drives bracket gripper cylinder, folder
Pawl shifts to the vibrating sensor unit that combination is fixed on oil pump case to be measured, then bracket gripper cylinder driving clamping jaw closure folder
The vibrating sensor unit is held, then the mandril of the push cylinder retracts, and bracket gripper cylinder, clamping jaw and vibration is driven to pass
Sensor cell is far from oil pump to be measured, and then the pedestal support frame is moved upwards up to upper end and supports oil pump to be measured.
Preferably, the vibrating sensor unit, energy both installations are fixed on oil pump case to be measured.
Preferably, the vibrating sensor unit, can be fixed on oil pump case to be measured by the installation of clip both.
Preferably, the vibration signal of vibrating sensor unit is successively amplified and is filtered through signal amplifier and filter
After be transmitted to signal acquisition module, signal acquisition module will treated that data vibration signal is transmitted to host computer；
Host computer carries out order decomposition to the data vibration signal that signal acquisition module transmits by software, according to number
Noise order when obtaining operation of oil pump to be measured according to the power of each order of vibration signal is horizontal.
Preferably, the vibration signal of vibrating sensor unit is transmitted to signal amplifier by shielded cable；
Signal amplifier sends filter by coaxial cable for vibration signal after amplification；
After filter is filtered the vibration signal that signal amplifier is sent, characteristic signal is extracted, is extracted
Characteristic signal signal acquisition module is transmitted to by coaxial cable；
Treated data vibration signal by PXI industrial bus is transmitted to host computer by signal acquisition module.
Preferably, power supply is oil pump to be measured power supply by test cable.
Preferably, the vibrating sensor unit includes a three-dimensional acceleration transducer；Three-dimensional acceleration transducer is defeated
Signal out is as vibration signal；
After filter is filtered the vibration signal that signal amplifier is sent, extract tangential 20hz~
As characteristic signal, the characteristic signal of extraction passes through coaxial cable by 2khz, radial direction 20hz~2khz and axial direction 100hz~12khz
It is transmitted to signal acquisition module.
Preferably, the detection output signal of three-dimensional acceleration transducer is carried out 10~100 times of signal by signal amplifier
Amplification；
Filter is filtered place by two 20~2Khz, and 100~12khz filtering channel to vibration signal
Reason.
Preferably, signal amplifier and filter are arranged in a device or are divided into two devices；
Filter is placed in front of or after amplifier.
In order to solve the above technical problems, oil pump noise test method provided by the invention, makes oil pump to be measured be in hanging
Vibrating sensor unit is attached on oil pump case to be measured by state, the vibrating sensor unit inspection of when beginning oil pump to be measured
Survey the vibration signal of level of vibration when output vibration signal characterizes operation of oil pump to be measured.
Preferably, itself the following steps are included:
Oil pump upper end to be measured is hung and is fixed by one, and lower end is supported by pedestal support frame；
Two, support the mandril of cylinder that pedestal support frame is driven to move down by pedestal, support oil pump to be measured with pedestal
Frame separates and is in vacant state；
Vibrating sensor unit is attached on oil pump case to be measured by three,；
Four, oil pump to be measured is started to work, and the vibrating sensor unit detection output is vibrated when characterizing operation of oil pump to be measured
Horizontal vibration signal.
Preferably, further comprising the steps of:
Five, are completed, and vibrating sensor unit is made to be detached from oil pump to be measured；
Six, pedestal support frames are moved upwards up to upper end and support oil pump to be measured.
Preferably, the vibrating sensor unit, both installations are fixed on oil pump case to be measured.
Preferably, the vibrating sensor unit, is fixed on oil pump case to be measured by the installation of clip both.
Preferably, the vibrating sensor unit is attached on oil pump case to be measured by the adsorption capacity of magnet.
Preferably, bracket gripper cylinder drives clamping jaw clamping vibration sensor unit in step 3；Then push cylinder to
Preceding movement drives bracket gripper cylinder, clamping jaw and vibrating sensor unit to be moved at oil pump case to be measured；Then bracket clamps
Cylinder drives clamping jaw to open release vibrating sensor unit, so that vibrating sensor unit be made to be attached to by the adsorption capacity of magnet
On oil pump case to be measured；
It in step 5, is completed, push cylinder, which travels forward, drives bracket gripper cylinder, clamping jaw to be moved to vibrating sensing
At device unit；Then vibrating sensor unit is picked up in bracket gripper cylinder driving clamping jaw closure clamping；Then push cylinder is backward
Movement makes vibrating sensor unit be detached from oil pump to be measured.
Preferably, the vibration signal of vibrating sensor unit passes after signal amplifier and filter are amplified and filtered
It is sent to signal acquisition module, data vibration signal is transmitted to host computer to signal acquisition module by treated；
Host computer carries out order decomposition to the data vibration signal that signal acquisition module transmits by software, according to number
Noise order when obtaining operation of oil pump to be measured according to the power of each order of vibration signal is horizontal.
Preferably, the vibrating sensor unit includes a three-dimensional acceleration transducer；Three-dimensional acceleration transducer is defeated
Signal out is as vibration signal；
After filter is filtered the vibration signal that signal amplifier is sent, extract tangential 20hz~
As characteristic signal, the characteristic signal of extraction is transmitted to signal acquisition by 2khz, radial direction 20hz~2khz and axial direction 100hz~12khz
Module.
Preferably, the detection output signal of three-dimensional acceleration transducer is carried out 10~100 times of signal by signal amplifier
Amplification.
Oil pump noise test equipment of the invention and test method, when preparing to carry out noise test to oil pump to be measured, bottom
The mandril of seat supports cylinder drives pedestal support frame to move down, and oil pump to be measured is made to separate with pedestal support frame and be in hanging shape
State, the vibration signal of level of vibration when characterizing operation of oil pump to be measured of vibrating sensor unit output, reflects indirectly when test
Noise level when operation of oil pump.Oil pump noise test equipment of the invention, it is to be measured when carrying out noise test to oil pump to be measured
Oil pump is in vacant state, and the combination installation of vibrating sensor unit is fixed on oil pump case to be measured and does not connect with other devices
Touching can guarantee that the vibration signal of the detected output of vibrating sensor unit runs itself all from oil pump to be measured in this way, from
And it can accurately reflect the real standard of oil pump noise to be measured.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, the required attached drawing of the present invention is made below simple
It introduces, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ordinary skill people
For member, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the automatic testing equipment structural schematic diagram of one embodiment of oil pump noise test equipment of the invention；
Fig. 2 is the partial enlarged view of the automatic testing equipment structure of one embodiment of oil pump noise test equipment of the invention；
Fig. 3 is the test circuit diagram of one embodiment of oil pump noise test equipment of the invention.
Specific embodiment
Below in conjunction with attached drawing, clear, complete description is carried out to the technical solution in the present invention, it is clear that described
Embodiment is a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff all other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
Embodiment one
As shown in Figure 1, oil pump noise test equipment includes pedestal support frame 2, pedestal support cylinder 5, vibrating sensor list
Member 6；
1 upper end of oil pump suspension to be measured is fixed；
The pedestal support frame 2 is moved up and down with the flexible of pedestal support 5 mandril of cylinder；
When the pedestal support frame 2 is moved to upper end, oil pump 1 to be measured is supported；
When the pedestal support frame 2 is moved to lower end, oil pump 1 to be measured separates with the pedestal support frame 2 and is in hanging
State；
The vibrating sensor unit 6 can combine installation and be fixed on 1 shell of oil pump to be measured；
The vibrating sensor unit 6, for detecting output vibration signal.
The oil pump noise test equipment of embodiment one, when preparing to carry out noise test to oil pump 1 to be measured, pedestal supports gas
The mandril of cylinder 5 drives pedestal support frame 2 to move down, and oil pump 1 to be measured is made to separate with pedestal support frame 2 and be in vacant state,
The vibration signal of level of vibration when characterizing operation of oil pump to be measured that vibrating sensor unit 6 exports when test, reflection is oily indirectly
Noise level when pump work.The oil pump noise test equipment of embodiment one, when carrying out noise test to oil pump 1 to be measured, to
Survey oil pump 1 and be in vacant state, the combination of vibrating sensor unit 6 installation fixed on 1 shell of oil pump to be measured and not with other dresses
It sets and is in contact, can guarantee that vibrating sensor unit 6 detects the vibration signal exported and runs all from oil pump to be measured in this way
Itself, to can accurately reflect the real standard of oil pump noise to be measured.
Embodiment two
Oil pump noise test equipment based on embodiment one, as shown in Fig. 2, the vibrating sensor unit 6 includes accelerating
Spend sensor 61, magnet 62, bracket 63；
The acceleration transducer 61 and magnet 62, which are respectively mounted, to be fixed on the bracket 63；
Oil pump case to be measured is magnetic conductive material；
The vibrating sensor unit 6 is fixed on 1 shell of oil pump to be measured by the adsorption capacity combination installation of magnet 62.
Preferably, 1 shell of oil pump to be measured is cylinder, 6 front end of vibrating sensor unit is the same as 1 shell of oil pump to be measured
Mating surface is arc surface.
Preferably, the magnet 62 is fixed on 63 front end of bracket；The magnet 62 and 63 front end of bracket are common
6 front end of vibrating sensor unit is constituted with the mating surface of oil pump case to be measured.
Preferably, the acceleration transducer 61 is three-dimensional acceleration transducer.Three-dimensional acceleration test can characterize oil pump
Level of vibration when work reflects noise level when operation of oil pump indirectly.
Embodiment three
Based on embodiment one, oil pump noise test equipment further includes oil supply tank 3, guide pad 4, flange 7；
The flange 7 is for being fixed on fuel tank；
The oil supply tank 3 is fixed on the flange 7；
The guide pad 4 is fixed on 3 outer wall of oil supply tank；
The pedestal support cylinder 5 is fixed on the flange 7, and the mandril of the pedestal support cylinder 5 is along the guiding
4 guide rail stretching motion of block.
Preferably, the guide pad 4 is drum guide pad.
The oil pump noise test equipment of embodiment three, pedestal support the mandril of cylinder 5 dynamic up and down along the guide rail of guide pad 4
Make, drive 2 gentle support of oil pump support base oil pump 1 to be measured, or leaves oil pump 1 to be measured steadily to ensure that oil pump to be measured is in outstanding
Empty state.
Example IV
Based on embodiment one, two or three, oil pump noise test equipment further includes clamping jaw 9, bracket gripper cylinder 10, push gas
Cylinder 11；
The bracket gripper cylinder 10 is fixed on the mandril of the push cylinder 11；
The clamping jaw 9 is driven by the bracket gripper cylinder 10；
When preparing to carry out noise test to oil pump 1 to be measured, the closure of clamping jaw 9 clamps the vibrating sensor unit 6；
Oil pump to be measured is set to be in vacant state when the pedestal support frame 2 moves down, the mandril of the push cylinder 11 is stretched out, driven
Bracket gripper cylinder 10, clamping jaw 9 push vibrating sensor unit 6 to oil pump 1 to be measured, and then bracket gripper cylinder 10 drives clamping jaw
9 open release vibrating sensor unit 6, so that the combination installation of vibrating sensor unit 6 be made to be fixed on 1 shell of oil pump to be measured；
Then the mandril of the push cylinder 11 retracts, and drives bracket gripper cylinder 10, clamping jaw 9 far from oil pump 1 to be measured；
It carries out noise test to oil pump 1 to be measured to finish, the mandril of the push cylinder 11 stretches out, and drives bracket gripper cylinder
10, clamping jaw 9 shifts to the vibrating sensor unit 6 that combination is fixed on 1 shell of oil pump to be measured, and then bracket gripper cylinder 10 drives
The closure of clamping jaw 9 clamps the vibrating sensor unit 6, and then the mandril of the push cylinder 11 retracts, and bracket is driven to clamp gas
Cylinder 10, clamping jaw 9 and vibrating sensor unit 6 are far from oil pump 1 to be measured, and then the pedestal support frame 2 is moved upwards up to upper end branch
Prop up oil pump to be measured.
The oil pump noise test equipment of example IV, working principle are as follows: push cylinder 11 travels forward, by vibrating sensing
Device unit 6 pushes oil pump 1 to be measured to, and then bracket gripper cylinder 10 drives clamping jaw 9 to open release vibrating sensor unit 6, thus
The combination installation of vibrating sensor unit 6 is set to be fixed to 1 surface of shell of oil pump, then push cylinder 11 moves backward, drives bracket
Gripper cylinder 10, clamping jaw 9 are far from oil pump 1 to be measured, it is ensured that vibrating sensor unit 6 starts oil pump after contacting with oil pump 1 to be measured and makes an uproar
Sound test.After the completion of oil pump noise test, push cylinder 11 travels forward, and bracket gripper cylinder 10 drives the closure clamping of clamping jaw 9,
By vibrating sensor unit 6 pick up after, push cylinder 11 moves backward, by vibrating sensor unit 6 be completed it is to be measured
Oil pump 1 is separated, and the cylinder 5 of pedestal support at this time moves upwards, and drives oil pump support base 2 to hold up again and has tested completion
Oil pump, so that new oil pump to be measured is packed into.
The oil pump noise test equipment of example IV, vibrating sensor unit 6 can be automatically mounted into 1 shell table of oil pump to be measured
Face, vibrating sensor unit 6 and oil pump case to be measured is bonding, and be not in contact with other devices, it is normal in oil pump to be measured
During test job, guarantee that oil pump 1 to be measured is in vacant state, can guarantee the vibration letter that vibrating sensor unit 6 is tested
Number all from oil pump 1 to be measured operation itself.
Embodiment five
Oil pump noise test equipment based on embodiment one, the vibrating sensor unit 6 can both installation fixations
Onto 1 shell of oil pump to be measured.
Preferably, the vibrating sensor unit 6 can be fixed to 1 shell of oil pump to be measured by the installation of clip both
On.
Embodiment six
Based on embodiment one, as shown in figure 3, the vibration signal of vibrating sensor unit 6 is through signal amplifier 17 and filtering
Device 19 is transmitted to signal acquisition module 20 after successively amplifying and filter, signal acquisition module 20 by treated, vibrate by data
Signal is transmitted to host computer 22；
Host computer 22 carries out order decomposition, root to the data vibration signal that signal acquisition module 20 transmits by software
Noise order when obtaining oil pump 1 to be measured work according to the power of each order of data vibration signal is horizontal.
Preferably, the vibration signal of vibrating sensor unit 6 is transmitted to signal amplifier 17 by shielded cable 16；
Signal amplifier 17 sends filter 19 by coaxial cable 18 for vibration signal after amplification；
After filter 19 is filtered the vibration signal that signal amplifier is sent, characteristic signal is extracted, is mentioned
The characteristic signal taken is transmitted to signal acquisition module 20 by coaxial cable 18；
Treated data vibration signal by PXI industrial bus 21 is transmitted to host computer by signal acquisition module 20
22。
Preferably, the power supply 12 is oil pump to be measured power supply by test cable 13.
Preferably, the vibrating sensor unit includes a three-dimensional acceleration transducer 61；Three-dimensional acceleration transducer
The signal of 61 detection outputs is as vibration signal；
After filter is filtered the vibration signal that signal amplifier is sent, extract tangential 20hz~
As characteristic signal, the characteristic signal of extraction passes through coaxial cable by 2khz, radial direction 20hz~2khz and axial direction 100hz~12khz
It is transmitted to signal acquisition module；
Signal amplifier 17 puts the signal that the detection output signal of three-dimensional acceleration transducer 61 carries out 10~100 times
Greatly, originally faint electric signal is enlarged into the fiduciary level signal that can be used for signal acquisition；
The filter 19 passes through two 20hz~2khz to the amplified vibration signal that signal amplifier 17 is sent,
And 100hz~12khz filtering channel is filtered.
Preferably, signal amplifier 17 and filter 19 can be set in a device, two independences can also be divided into
Device；
Filter 19 can be placed in front of or after amplifier.
The oil pump noise test equipment of embodiment six, by a series of amplifier and filter by faint vibration signal
It is converted into the fiduciary level signal that can be used for signal acquisition and processing, is carried out by way of Fourier transform after the signal acquisition
Software calculates, and carries out order to collected all directions acceleration vibration signal and decomposes the vibration order decomposition of all directions acceleration,
The noise order level for vibrating the power of each order when can directly correspond to operation of oil pump.To realize the screening to oil pump noise
With test.
The oil pump noise test equipment of embodiment six carries out traditional performance (as flowed to oil pump product in the oil pump production phase
Amount, electric current, pressure etc.) test while carry out three-dimensional acceleration test, when which can characterize operation of oil pump
Level of vibration, indirectly reflect operation of oil pump when noise level, to locomotive fuel oil pump production process quality control, reduce it is whole
Vehicle quality risk is of great significance.
Embodiment seven
Oil pump noise test method makes oil pump to be measured be in vacant state, vibrating sensor unit is attached to be measured
On oil pump case, when beginning oil pump to be measured, the vibrating sensor unit detection output vibration signal was when characterizing operation of oil pump to be measured
The vibration signal of level of vibration.
The oil pump noise test method of embodiment seven, when carrying out noise test to oil pump to be measured, oil pump to be measured is in outstanding
Dummy status, vibrating sensor unit are attached on oil pump case to be measured and not with other devices and are in contact, and can guarantee vibration in this way
The vibration signal of the detected output of sensor unit is all from oil pump to be measured operation itself, to can accurately reflect to be measured
The real standard of oil pump noise.
Embodiment eight
Based on embodiment seven, oil pump noise test method the following steps are included:
Oil pump upper end to be measured is hung and is fixed by one, and lower end is supported by pedestal support frame；
Two, support the mandril of cylinder that pedestal support frame is driven to move down by pedestal, support oil pump to be measured with pedestal
Frame separates and is in vacant state；
Vibrating sensor unit is attached on oil pump case to be measured by three,；
Four, oil pump to be measured is started to work, and the vibrating sensor unit detection output is vibrated when characterizing operation of oil pump to be measured
Horizontal vibration signal.
Preferably, oil pump noise test method is further comprising the steps of:
Five, are completed, and vibrating sensor unit is made to be detached from oil pump to be measured；
Six, pedestal support frames are moved upwards up to upper end and support oil pump to be measured.
Preferably, the vibrating sensor unit, both installations are fixed on oil pump case to be measured.
Preferably, the vibrating sensor unit, is fixed on oil pump case to be measured by the installation of clip both.
Preferably, the vibrating sensor unit is attached on oil pump case to be measured by the adsorption capacity of magnet.
Preferably, bracket gripper cylinder drives clamping jaw clamping vibration sensor unit in step 3；Then push cylinder to
Preceding movement drives bracket gripper cylinder, clamping jaw and vibrating sensor unit to be moved at oil pump case to be measured；Then bracket clamps
Cylinder drives clamping jaw to open release vibrating sensor unit, so that vibrating sensor unit be made to be attached to by the adsorption capacity of magnet
On oil pump case to be measured；
It in step 5, is completed, push cylinder, which travels forward, drives bracket gripper cylinder, clamping jaw to be moved to vibrating sensing
At device unit；Then vibrating sensor unit is picked up in bracket gripper cylinder driving clamping jaw closure clamping；Then push cylinder is backward
Movement makes vibrating sensor unit be detached from oil pump to be measured.
Preferably, the vibration signal of vibrating sensor unit passes after signal amplifier and filter are amplified and filtered
It is sent to signal acquisition module, data vibration signal is transmitted to host computer to signal acquisition module by treated；
Host computer carries out order decomposition to the data vibration signal that signal acquisition module transmits by software, according to number
Noise order when obtaining operation of oil pump to be measured according to the power of each order of vibration signal is horizontal.
Preferably, the vibrating sensor unit includes a three-dimensional acceleration transducer；Three-dimensional acceleration transducer is defeated
Signal out is as vibration signal；
After filter is filtered the vibration signal that signal amplifier is sent, extract tangential 20hz~
As characteristic signal, the characteristic signal of extraction is transmitted to signal acquisition by 2khz, radial direction 20hz~2khz and axial direction 100hz~12khz
Module.
Preferably, the detection output signal of three-dimensional acceleration transducer is carried out 10~100 times of signal by signal amplifier
Originally faint electric signal is enlarged into the fiduciary level signal that can be used for signal acquisition by amplification.
The oil pump noise test method of embodiment eight, when preparing to carry out noise test to oil pump to be measured, pedestal supports gas
The mandril of cylinder drives pedestal support frame to move down, and separates oil pump to be measured in vacant state with pedestal support frame, tests
When vibrating sensor unit output characterize operation of oil pump to be measured when level of vibration vibration signal, reflect operation of oil pump indirectly
When noise level.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (18)
1. a kind of oil pump noise test equipment, which is characterized in that it includes pedestal support frame, pedestal support cylinder, vibrating sensing
Device unit；
Oil pump upper end suspension to be measured is fixed；
The pedestal support frame is moved up and down with the flexible of pedestal support ejecting rod of cylinder；
When the pedestal support frame is moved to upper end, the oil pump to be measured is supported；
When the pedestal support frame is moved to lower end, oil pump to be measured separates with the pedestal support frame and is in vacant state；
The vibrating sensor unit can combine installation and be fixed on oil pump case to be measured；
The vibrating sensor unit, for detecting output vibration signal；
Oil pump noise test equipment further includes clamping jaw, bracket gripper cylinder, push cylinder；
The bracket gripper cylinder is fixed on the mandril of the push cylinder；
The clamping jaw is driven by the bracket gripper cylinder；
When preparing to carry out noise test to oil pump to be measured, the clamping jaw closure clamps the vibrating sensor unit；When described
Pedestal support frame, which moves down, makes oil pump to be measured be in vacant state, and the mandril of the push cylinder stretches out, and drives bracket clamping
Cylinder, clamping jaw push vibrating sensor unit to oil pump to be measured, and then bracket gripper cylinder driving clamping jaw is opened release vibration and passed
Sensor cell, so that the combination installation of vibrating sensor unit be made to be fixed on oil pump case to be measured；Then the push cylinder
Mandril retracts, and drives bracket gripper cylinder, clamping jaw far from oil pump to be measured；
It is finished when oil pump to be measured carries out noise test, the mandril of the push cylinder stretches out, and bracket gripper cylinder, clamping jaw is driven to move
It is fixed on the vibrating sensor unit on oil pump case to be measured to combination, then bracket gripper cylinder driving clamping jaw closure clamping institute
Vibrating sensor unit is stated, then the mandril of the push cylinder retracts, and drives bracket gripper cylinder, clamping jaw and vibrating sensor
Unit is far from oil pump to be measured, and then the pedestal support frame is moved upwards up to upper end and supports oil pump to be measured.
2. oil pump noise test equipment according to claim 1, which is characterized in that
The vibrating sensor unit includes acceleration transducer, magnet, bracket；
The acceleration transducer and magnet, which are respectively mounted, to be fixed on the bracket；
Oil pump case to be measured is magnetic conductive material；
The vibrating sensor unit is fixed on oil pump case to be measured by the adsorption capacity combination installation of magnet.
3. oil pump noise test equipment according to claim 2, which is characterized in that
Oil pump case to be measured is cylinder, and vibrating sensor unit front end is circular arc with the mating surface of oil pump case to be measured
Face.
4. oil pump noise test equipment according to claim 2 or 3, which is characterized in that
The magnet is fixed on the bracket front end；
The magnet and the bracket front end collectively form vibrating sensor unit front end with the cooperation of oil pump case to be measured
Face.
5. oil pump noise test equipment according to claim 2 or 3, which is characterized in that
The acceleration transducer is three-dimensional acceleration transducer.
6. oil pump noise test equipment according to claim 1, which is characterized in that
Oil pump noise test equipment further includes oil supply tank, guide pad, flange；
The flange is for being fixed on fuel tank；
The oil supply tank is fixed on the flange；
The guide pad is fixed on the oil supply tank outer wall；
The pedestal support cylinder is fixed on the flange, and the pedestal supports the mandril of cylinder along the guide rail of the guide pad
Stretching motion.
7. oil pump noise test equipment according to claim 6, which is characterized in that
The guide pad is drum guide pad.
8. oil pump noise test equipment according to claim 1, which is characterized in that
The vibration signal of vibrating sensor unit is transmitted to letter after signal amplifier and filter are successively amplified and filtered
Number acquisition module, signal acquisition module will treated that data vibration signal is transmitted to host computer；
Host computer carries out order decomposition to the data vibration signal that signal acquisition module transmits by software, is shaken according to data
The power of dynamic each order of signal obtains noise order level when operation of oil pump to be measured.
9. oil pump noise test equipment according to claim 8, which is characterized in that
The vibration signal of vibrating sensor unit is transmitted to signal amplifier by shielded cable；
Signal amplifier sends filter by coaxial cable for vibration signal after amplification；
After filter is filtered the vibration signal that signal amplifier is sent, characteristic signal, the spy of extraction are extracted
Reference number is transmitted to signal acquisition module by coaxial cable；
Treated data vibration signal by PXI industrial bus is transmitted to host computer by signal acquisition module.
10. oil pump noise test equipment according to claim 8, which is characterized in that
Power supply is oil pump to be measured power supply by test cable.
11. oil pump noise test equipment according to claim 8, which is characterized in that
The vibrating sensor unit includes a three-dimensional acceleration transducer；The signal conduct of three-dimensional acceleration transducer output
Vibration signal；
After filter is filtered the vibration signal that signal amplifier is sent, tangential 20hz~2khz, diameter are extracted
To 20hz~2khz and axial direction 100hz~12khz as characteristic signal, the characteristic signal of extraction is transmitted to signal by coaxial cable
Acquisition module.
12. oil pump noise test equipment according to claim 11, which is characterized in that
Signal amplifier amplifies the signal that the detection output signal of three-dimensional acceleration transducer carries out 10~100 times；
Filter is filtered place by two 20hz~2khz, and 100hz~12khz filtering channel to vibration signal
Reason.
13. oil pump noise test equipment according to claim 8, which is characterized in that
Signal amplifier and filter are arranged in a device or are divided into two devices；
Filter is placed in front of or after amplifier.
14. the oil pump noise test method of oil pump noise test equipment according to claim 1, which is characterized in that including
Following steps:
Oil pump upper end to be measured is hung and is fixed by one, and lower end is supported by pedestal support frame；
Two, support the mandril of cylinder that pedestal support frame is driven to move down by pedestal, make oil pump to be measured with pedestal support frame point
From and in vacant state；
Vibrating sensor unit is attached on oil pump case to be measured by three,；Bracket gripper cylinder drives clamping jaw clamping vibration sensing
Device unit；Then push cylinder, which travels forward, drives bracket gripper cylinder, clamping jaw and vibrating sensor unit to be moved to oil to be measured
At pump case；Then bracket gripper cylinder driving clamping jaw opens release vibrating sensor unit, to make vibrating sensor unit
It is attached on oil pump case to be measured by the adsorption capacity of magnet；
Four, oil pump to be measured is started to work, level of vibration when the vibrating sensor unit detection output characterizes operation of oil pump to be measured
Vibration signal；
Five, are completed, and push cylinder, which travels forward, drives bracket gripper cylinder, clamping jaw to be moved at vibrating sensor unit；
Then vibrating sensor unit is picked up in bracket gripper cylinder driving clamping jaw closure clamping；Then push cylinder moves backward, makes to shake
Dynamic sensor unit is detached from oil pump to be measured；
Six, pedestal support frames are moved upwards up to upper end and support oil pump to be measured.
15. oil pump noise test method according to claim 14, which is characterized in that
The vibrating sensor unit is attached on oil pump case to be measured by the adsorption capacity of magnet.
16. oil pump noise test method according to claim 14, which is characterized in that
The vibration signal of vibrating sensor unit is transmitted to signal after signal amplifier and filter are amplified and filtered and adopts
Collect module, data vibration signal is transmitted to host computer to signal acquisition module by treated；
Host computer carries out order decomposition to the data vibration signal that signal acquisition module transmits by software, is shaken according to data
The power of dynamic each order of signal obtains noise order level when operation of oil pump to be measured.
17. oil pump noise test method according to claim 16, which is characterized in that
The vibrating sensor unit includes a three-dimensional acceleration transducer；The signal conduct of three-dimensional acceleration transducer output
Vibration signal；
After filter is filtered the vibration signal that signal amplifier is sent, tangential 20hz~2khz, diameter are extracted
To 20hz~2khz and axial direction 100hz~12khz as characteristic signal, the characteristic signal of extraction is transmitted to signal acquisition module.
18. oil pump noise test method according to claim 16, which is characterized in that
Signal amplifier amplifies the signal that the detection output signal of three-dimensional acceleration transducer carries out 10~100 times.
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| CN108869033B (en) * | 2018-06-09 | 2021-01-29 | 安徽华兴车辆有限公司 | Engine oil pump core vibration measuring device |
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| SU1536054A1 (en) * | 1988-04-04 | 1990-01-15 | Всесоюзный Научно-Исследовательский И Технологический Институт Монтажа, Эксплуатации И Ремонта Машин И Оборудования Животноводческих И Птицеводческих Ферм | Method of running-in a rotary vacuum pump and bench for performing same |
| CN101509482B (en) * | 2009-03-23 | 2011-08-31 | 联合汽车电子有限公司 | Oil pump hot oil test desk and its use method |
| CN101526416B (en) * | 2009-03-30 | 2011-06-29 | 上海贝洱热系统有限公司 | Automotive air conditioner vibration test table |
| CN201739153U (en) * | 2009-10-30 | 2011-02-09 | 北京德尔福万源发动机管理系统有限公司 | On-line testing device for operating vibration of fuel pump |
| CN201650536U (en) * | 2010-02-11 | 2010-11-24 | 北京经纬恒润科技有限公司 | Simulating test board of engine oil pump |
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| CN206158985U (en) * | 2016-09-30 | 2017-05-10 | 联合汽车电子有限公司 | Oil pump noise test equipment |
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