CN107796626A - A kind of mounting platform and its application method for automobile engine PIV measurements - Google Patents
A kind of mounting platform and its application method for automobile engine PIV measurements Download PDFInfo
- Publication number
- CN107796626A CN107796626A CN201711050159.4A CN201711050159A CN107796626A CN 107796626 A CN107796626 A CN 107796626A CN 201711050159 A CN201711050159 A CN 201711050159A CN 107796626 A CN107796626 A CN 107796626A
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- piv
- leading screw
- mounting platform
- bridges
- mounting
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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
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/18—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance
- G01P5/20—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance using particles entrained by a fluid stream
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Testing Of Engines (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a kind of mounting platform and its application method for automobile engine PIV measurements.It includes side leading screw mounting platform, side guide screw movement system and motor, the main mounting platform in center, hydraulic lifting system, side-mounted mounting rail, side guide screw movement system and motor, the formula that bridges mounting rail, the guide screw movement system that bridges and motor, PIV fixing devices etc..The present invention is applied to the fixed installation in PIV experiment to automobile engine and PIV devices, and realizes particle generator respectively, the free movement of video camera and engine in three dimensions, with the flow field data acquisition in different measurement planes in complete coupled engines.Particle generator and video camera are separately mounted on side and the mounting rail that bridges according to demand, and motion and measurement in three dimensions are realized by hydraulic means and each guide screw movement system.Application method of the present invention is simple, and automaticity is high, and data acquisition range is wide, suitable for the PIV measurement experiments of different measurement requests.
Description
Technical field
The invention discloses mounting platform during a kind of automobile engine PIV measurements, especially for different planes to be measured
Trace particle motion conditions record.
Background technology
PIV (particle image velocimetry method), is a kind of transient state, multiple spot, touchless hydrodynamics speed-measuring method, can be same
One transient state records the velocity profile information in a large amount of spatial points, and can provide abundant flow field space structure and flowing spy
Property.Due to the closure of Vehicle Engine Structure, the analysis for its internal coolant mobility status, typically PIV technologies are used
Carry out the collection of flow-data.For PIV technologies in addition to trace particle is spread to flow field, all measurement apparatus are simultaneously not involved in flow field, because
, to ensure the accuracy of measurement, particle generator and camera device in PIV need to install with position at a particular angle for this
Around mechanism to be measured.At present for the arrangement of the measurement apparatus in PIV methods, substantially pinpointed using manual measurement laggard
The fixed scheme of row installation, installation accuracy is relatively low, while for the mobility status measurement of section different in engine to be measured
Situation, it is necessary to constantly update and change the installation site of measurement apparatus, with complete in Different Plane the arrangement of trace particle and
The shooting record of flow-data, therefore often change one-shot measurement plane, particle generator and video camera will be manually adjusted
Position and angle, measurement efficiency is low, and measurement accuracy cannot be guaranteed.In addition, for the liquid form of coolant in simulated engine,
The extra water pipe for setting up water tank and being connected with engine is also needed to, the floor space of whole measuring system is larger, is unfavorable for it
The arrangement of remaining device.
The content of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, there is provided a kind of installation for automobile engine PIV measurements
Platform and its application method.
A kind of mounting platform for automobile engine PIV measurements of the present invention, including ground mounting platform, side leading screw
Mounting platform, the main mounting platform in center, four sets of side guide screw movement systems, bridge PIV kinematic systems, side PIV kinematic systems,
Water tank；
Side leading screw mounting platform, water tank, the main mounting platform in center may be contained within the mounting platform of ground, side leading screw peace
Hollow out in the middle part of assembling platform, the main mounting platform in center is located therein in absolutely empty, is realized and lifted by hydraulic lift, on water tank
Connecting water pipe, water pipe stretch out the main mounting platform in center and are used to be connected with engine to be measured；
Four sets of side guide screw movement systems are divided into four sides of side leading screw mounting platform, and often set includes being fixed on ground
Side guide on the mounting platform of face, it is fixed on the side leading screw of side leading screw mounting platform side, for driving side leading screw
Side motor and motor mounting rack for installing fixed side motor；
The PIV kinematic systems that bridge include being located at the formula mounting rail that bridges of side leading screw mounting platform both sides, are fixed on beam
On the leading screw that bridges, for drive the leading screw that bridges bridge motor and the first PIV fixing devices, the formula mounting rail of bridging pass through
Side feed screw nut coordinates with side leading screw, and the formula that bridges mounting rail bottom is coordinated by sliding block and side guide, and the first PIV is fixed
Device passes through feed screw nut and the leading screw cooperation that bridges of bridging；
Side PIV kinematic systems include side-mounted mounting rail, the side leading screw being fixed on side-mounted mounting rail, for driving
The side motor and the 2nd PIV fixing devices of dynamic side leading screw, side-mounted mounting rail pass through side feed screw nut and side
Side leading screw coordinates, and side-mounted mounting rail bottom is coordinated by sliding block and side guide, and the 2nd PIV fixing devices pass through side leading screw
Nut coordinates with side leading screw.
In above-mentioned technical proposal, infrared ray collision warning generator is respectively provided with the both ends of each leading screw.Ensureing to transport
The security of sleeve mechanism is lifted on the basis of dynamic system worked well, is prevented because of the wrong and generation mechanism of control system
Interference is even collided, and is protected overall structure not to be damaged, is lifted the security of measurement.
Described side PIV kinematic systems also include the side for being fixed on side-mounted mounting rail opposite side parallel with side leading screw
Guide rail is put, the 2nd PIV fixing devices are moved up and down by side leading screw drives edge side guide rail.So design can improve side-mounted peace
The stressing conditions of structure on beam are filled, the synkinesia guide rail set up can optimize the motion conditions of the 2nd PIV fixing devices, reduce curved
Song, the effect with alternate stress, the service life of lift structure are reversed, while can also optimize the kinematic accuracy of spindle arrangement.
The main mounting platform in center and side leading screw mounting platform are separate, and can be realized and started by hydraulic lift
Machine moves in the space of Z-direction in itself.
Side-mounted mounting rail and the formula mounting rail that bridges can exchange it in side silk according to the difference of engine plane to be measured
Installation site on thick stick mounting platform, realize the comprehensive measurement of multi-angle.
A kind of application method as described above for automobile engine PIV measurement mounting platforms, comprises the following steps：
1) when measuring the flow field situation in horizontal plane, particle generator is fixed in the 2nd PIV fixing devices, will be taken the photograph
As device is fixed in the first PIV fixing devices, PIV particle generators realize the movement of Z-direction, the main peace in center by side leading screw
Engine on assembling platform then realizes the movement of Z-direction by hydraulic lift, and both coordinate to realize trace particle not
With the arrangement in position height horizontal survey face；PIV video cameras are arranged in the first PIV fixing devices simultaneously, pass through side
Leading screw and the leading screw that bridges realize two-dimensional movement of the video camera in X-Y plane, complete to show each opening position in horizontal plane to be measured
The shooting of track Particles Moving situation and data record；
2) when measuring the flow field situation in perpendicular, particle generator is fixed in the first PIV fixing devices, will
Image pick-up device is fixed in the 2nd PIV fixing devices, and first according to the deployment scenarios for being measured engine, perpendicular to be measured is X-
Z or Y-Z plane, and the physical location of plane, adjust side-mounted mounting rail and the formula mounting rail that bridges is installed in side leading screw
Installation site on platform, the shifting of particle generator optional position in X-Y plane is realized by side leading screw and the leading screw that bridges
It is dynamic, while the vertical motion of the main mounting platform of axial rotation and center by particle generator in itself, realize to being measured
Trace particle arrangement in engine in X-Z or Y-Z plane, video camera be arranged through side-mounted mounting rail and the formula installation that bridges
Different installation forms of the beam on the leading screw mounting platform of side are all the time perpendicular to plane to be measured, while by side leading screw and side
Put leading screw and realize two-dimensional movement of the PIV video cameras in X-Z or Y-Z plane, it is each in perpendicular to be measured to shoot and record
The trace particle motion conditions of opening position.
Using the present invention, motor and its operating system module can be utilized to realize and filled to particle generator and shooting
That puts is accurately positioned arrangement, and for manually fixed point mounting arrangements, operation difficulty reduces, and setting accuracy lifting, ensures
The accuracy of measurement data.Simultaneously for the flow field survey situation at diverse location plane, transported by the leading screw on each component
Dynamic system can realize movement of the measurement apparatus in any three dimensions, solve every change one-shot measurement plane, Dou Yaoren
The problem of position and angle of work adjustment particle generator and camera device, can be fast using control system and driver element
Speed, the position adjustment work for accurately completing correlation meter, lift the efficiency of whole measurement process, reduce in measurement process
Because of workload caused by instrument layout.Especially after engine installs, it is not necessary to which its mobile position or angle can be real
Now to its comprehensive flexibly test, further, since being directly disposed with water tank and water pipe on the mounting platform of ground, integrate and simple
The structure of whole test equipment is changed, it is not necessary to extra mounting arrangements are carried out to relevant device.
Brief description of the drawings
Fig. 1 is the schematic diagram that automobile engine PIV of the present invention measures mounting platform；
Fig. 2 is that the main installation of side leading screw mounting platform and center is flat in automobile engine PIV of the present invention measurement mounting platforms
The structure and connection diagram (removal fixed mount) of platform；
Fig. 3 is the central main mounting platform schematic diagram that automobile engine PIV of the present invention measures mounting platform；
Fig. 4 is the structure that automobile engine PIV of the present invention measures the side-mounted mounting rail of mounting platform and additional movement unit
Schematic diagram；
Fig. 5 is that automobile engine PIV of the present invention measures mounting platform and bridged the structure of formula mounting rail and additional movement unit
Schematic diagram；
In figure, ground mounting platform 1, side guide 2, hydraulic lift 3, water tank 4, side leading screw 5, infrared ray collision
Alarm generator 6, the formula that bridges mounting rail 7, side leading screw 8, the first PIV fixing devices 9, bridge motor 10, side driving
Motor 11, motor mounting rack 12, side motor 13, side leading screw mounting platform 14, the main mounting platform 15 in center, side
Guide rail 16, the 2nd PIV fixing devices 17, bridge leading screw 18, water pipe 19, side-mounted mounting rail 20.
Embodiment
As shown in Fig. 1,2,3,4,5, side leading screw mounting platform 14, water tank 4, the main mounting platform 15 in center are fixedly mounted
In on ground mounting platform 1, side leading screw mounting platform 14 is in middle part hollow out, and the main mounting platform 15 in center is then located therein sky
In space, realized and lifted by hydraulic lift 3, mechanical disturbance is avoided by such mode between the two.Connect on water tank 4
Water receiving pipe 19, water pipe 19 stretches out platform by the hole of the main mounting platform 15 in center, and is connected with engine to be measured；
Four sets of side guide screw movement systems are divided into four sides of side leading screw mounting platform 14, often cover system architecture one
Cause, including be fixed on ground mounting platform 1 side guide 2, be fixed on the side silk of the side of side leading screw mounting platform 14
Thick stick 5, the side motor 13 for driving side leading screw and the motor for installing fixed side motor install branch
Frame 12；
The PIV kinematic systems that bridge include being located at the formula mounting rail 7 that bridges of the both sides of side leading screw mounting platform 14, whole beam
Frame structure be in gantry shape, in addition, system include being fixed on beam the leading screw 18 that bridges, for driving the bridging of leading screw of bridging
The PIV fixing devices 9 of motor 10 and the first, the formula that bridges mounting rail 7 are matched somebody with somebody by side feed screw nut and the machinery of side leading screw 5
Close, the motion that the bottom of the formula that bridges mounting rail 7 then coordinates completion system by sliding block and side guide 2 aids in.First PIV fixes dress
9 are put by the feed screw nut that bridges with the leading screw 18 that bridges to coordinate；
Side PIV kinematic systems include side-mounted mounting rail 20, the side leading screw 8 being fixed on side-mounted mounting rail, used
In the PIV fixing devices 17 of side motor 11 and the 2nd of driving side leading screw.Side-mounted mounting rail 20 passes through side silk
Thick stick nut coordinates with side leading screw 5, completes the arrangement of kinematic system, and the side-mounted bottom of mounting rail 20 passes through sliding block and side guide
2 coordinate, and the 2nd PIV fixing devices 17 are coordinated by side feed screw nut and side leading screw 8.
Automobile engine PIV measurements mounting platform application method comprises the following steps：
One, is when measuring the flow field situation in horizontal plane：
1) particle generator is fixed in the 2nd PIV fixing devices 17, image pick-up device is fixed on the first PIV fixing devices
On 9；
2) PIV particle generators realize the movement of Z-direction by side leading screw 8, start on the main mounting platform 15 in center
Machine then realizes the movement of Z-direction by hydraulic lift 3, and both coordinate to realize trace particle in diverse location height level
Arrangement in measuring surface；
3) while by PIV video cameras it is arranged in the first PIV fixing devices 9, passes through side leading screw 5 and the leading screw 18 that bridges
Two-dimensional movement of the video camera in X-Y plane is realized,
4) inter-agency mutual cooperation, complete to the shooting of each opening position trace particle motion conditions in horizontal plane to be measured and
Data record；
Two, are when measuring the flow field situation in perpendicular：
1) particle generator is fixed in the first PIV fixing devices 9, image pick-up device is fixed on the 2nd PIV fixing devices
On 17；
2) it is X-Z or Y-Z plane first according to the deployment scenarios for being measured engine, perpendicular to be measured, Yi Jiping
The physical location in face, adjust side-mounted mounting rail 20 and installation position of the formula mounting rail 7 on side leading screw mounting platform 14 that bridge
Put；
3) movement of particle generator optional position in X-Y plane is realized by side leading screw 5 and the leading screw 18 that bridges, together
When by the main mounting platform 15 of particle generator axial rotation in itself and center vertical motion, realize and start to being measured
Trace particle arrangement in machine in X-Z or Y-Z plane；
4) being arranged through for video camera and bridges formula mounting rail 7 on side leading screw mounting platform 14 at side-mounted mounting rail 20
Different installation forms all the time perpendicular to plane to be measured, while realize PIV video cameras by side leading screw 5 and side leading screw 8
Two-dimensional movement in X-Z or Y-Z plane；
5) shoot and record the trace particle motion conditions of each opening position in perpendicular to be measured.
Using above-mentioned structure, it is possible to achieve：
1. the automatized three-dimensional movement of PIV measurement apparatus can be realized by Mechanical course, without manually adjusting；
2., only need to be by adjusting the PIV kinematic systems that bridged in the device without the installation site and angle of locomotor
Different test angles and plane can be achieved in distribution with side PIV kinematic systems；
3. side leading screw mounting platform 14 and the main mounting platform 15 in center are set independently of each other, hanging down for engine can be achieved
Nogata expands test scope and flexibility to motion；
4. water tank is directly set on the mounting platform of ground, it is compact-sized, it is very easy to use.
Claims (4)
1. a kind of mounting platform for automobile engine PIV measurements, it is characterised in that including ground mounting platform (1), side
Leading screw mounting platform (14), the main mounting platform (15) in center, four sets of side guide screw movement systems, bridge PIV kinematic systems, side
PIV kinematic systems, water tank (4)；
Side leading screw mounting platform (14), water tank (4), the main mounting platform (15) in center may be contained within ground mounting platform (1),
Hollow out in the middle part of side leading screw mounting platform (14), the main mounting platform (15) in center are located therein in absolutely empty, pass through hydraulic lifting
Device (3), which is realized, to be lifted, connecting water pipe (19) on water tank (4), and water pipe (19) stretches out the main mounting platform (15) in center and is used for treating
Engine is surveyed to be connected；
Four sets of side guide screw movement systems are divided into four sides of side leading screw mounting platform (14), and often set includes being fixed on ground
Side guide (2) on face mounting platform (1), it is fixed on the side leading screw (5) of side leading screw mounting platform (14) side, is used for
Drive the side motor (13) of side leading screw and the motor mounting rack (12) for installing fixed side motor；
The PIV kinematic systems that bridge include being located at the formula mounting rail (7) that bridges of side leading screw mounting platform (14) both sides, are fixed on
The leading screw that bridges (18) on beam, the motor that bridges (10) and the first PIV fixing devices (9) for driving the leading screw that bridges, across
Formula mounting rail (7) is put by side feed screw nut and side leading screw (5) to coordinate, the formula that bridges mounting rail (7) bottom by sliding block with
Side guide (2) coordinates, and the first PIV fixing devices (9) pass through feed screw nut and leading screw (18) cooperation that bridges of bridging；
Side PIV kinematic systems include side-mounted mounting rail (20), the side leading screw (8) being fixed on side-mounted mounting rail, used
In the side motor (11) and the 2nd PIV fixing devices (17) of driving side leading screw, side-mounted mounting rail (20) passes through
Side feed screw nut coordinates with side leading screw (5), and side-mounted mounting rail (20) bottom is coordinated by sliding block and side guide (2),
2nd PIV fixing devices (17) are coordinated by side feed screw nut and side leading screw (8).
2. the mounting platform according to claim 1 for automobile engine PIV measurements, it is characterised in that at each
The both ends of leading screw are respectively provided with infrared ray collision warning generator (6).
3. the mounting platform according to claim 1 for automobile engine PIV measurements, it is characterised in that described side
Putting PIV kinematic systems also includes the side guide rail for being fixed on side-mounted mounting rail (20) opposite side parallel with side leading screw (8)
(16), the 2nd PIV fixing devices (17) are moved up and down by side leading screw drives edge side guide rail (16).
A kind of 4. application method as claimed in claim 1 for automobile engine PIV measurement mounting platforms, it is characterised in that
Comprise the following steps：
1) when measuring the flow field situation in horizontal plane, particle generator is fixed in the 2nd PIV fixing devices (17), will be taken the photograph
As device is fixed in the first PIV fixing devices (9), PIV particle generators realize the movement of Z-direction by side leading screw (8), in
The engine on main mounting platform (15) is entreated then to realize the movement of Z-direction by hydraulic lift (3), both coordinate to realize
Arrangement of the trace particle in diverse location height level's measuring surface；PIV video cameras are arranged on the first PIV fixing devices simultaneously
(9) on, two-dimensional movement of the video camera in X-Y plane is realized by side leading screw (5) and the leading screw that bridges (18), completed to be measured
The shooting of each opening position trace particle motion conditions and data record in horizontal plane；
2) when measuring the flow field situation in perpendicular, particle generator is fixed in the first PIV fixing devices (9), will
Image pick-up device is fixed in the 2nd PIV fixing devices (17), first according to the deployment scenarios for being measured engine, perpendicular to be measured
For the physical location of X-Z or Y-Z plane, and plane, adjust side-mounted mounting rail (20) and the formula mounting rail (7) that bridges is in side
Installation site on side leading screw mounting platform (14), realize that particle generator exists by side leading screw (5) and the leading screw that bridges (18)
The movement of optional position in X-Y plane, while the main mounting platform of axial rotation and center by particle generator in itself
(15) vertical motion, realize and X-Z in measured engine or the trace particle in Y-Z plane are arranged, the arrangement of video camera
Begun by side-mounted mounting rail (20) and different installation forms of the formula mounting rail (7) on side leading screw mounting platform (14) that bridge
Eventually perpendicular to plane to be measured, while realize that PIV video cameras are put down in X-Z or Y-Z by side leading screw (5) and side leading screw (8)
Two-dimensional movement in face, to shoot and record the trace particle motion conditions of each opening position in perpendicular to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711050159.4A CN107796626B (en) | 2017-10-31 | 2017-10-31 | A kind of mounting platform and its application method for automobile engine PIV measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711050159.4A CN107796626B (en) | 2017-10-31 | 2017-10-31 | A kind of mounting platform and its application method for automobile engine PIV measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107796626A true CN107796626A (en) | 2018-03-13 |
| CN107796626B CN107796626B (en) | 2019-05-14 |
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| CN201711050159.4A Expired - Fee Related CN107796626B (en) | 2017-10-31 | 2017-10-31 | A kind of mounting platform and its application method for automobile engine PIV measurement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110672294A (en) * | 2019-03-14 | 2020-01-10 | 浙江大学 | System and method for researching following flow field in road environment |
| CN111122115A (en) * | 2020-01-08 | 2020-05-08 | 哈尔滨工程大学 | Multi-plane SPIV experimental device |
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| CN107228762A (en) * | 2017-06-26 | 2017-10-03 | 湘潭大学 | A kind of test engine catalyst flowing and the experimental provision of conversion performance |
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| JP2006023090A (en) * | 2004-07-06 | 2006-01-26 | Sumitomo Wiring Syst Ltd | Visual inspection device for cylindrical member |
| CN101261188A (en) * | 2008-01-08 | 2008-09-10 | 西安交通大学 | Car engine cooling water jacket flow field test system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110672294A (en) * | 2019-03-14 | 2020-01-10 | 浙江大学 | System and method for researching following flow field in road environment |
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| CN111122115B (en) * | 2020-01-08 | 2022-06-17 | 哈尔滨工程大学 | Multi-plane SPIV experimental device |
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| CN107796626B (en) | 2019-05-14 |
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