CN104792527B - Front-engine rear-drive automobile power drive system torsional test stand - Google Patents
Front-engine rear-drive automobile power drive system torsional test stand Download PDFInfo
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- CN104792527B CN104792527B CN201510213040.9A CN201510213040A CN104792527B CN 104792527 B CN104792527 B CN 104792527B CN 201510213040 A CN201510213040 A CN 201510213040A CN 104792527 B CN104792527 B CN 104792527B
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Abstract
The invention discloses a kind of automotive power transmission system torsional test stand, mainly it is made up of vehicle inertia simulation system, drive device, exciting device and loading device, it is characterized in that, the work of drive device simulated engine, produce power drive engine flywheel to rotate, whole transmission system is run according to normal driving cycle；Vehicle inertia simulation system simulating vehicle motional inertia present in running on road；Loading device supplementary inertial simulation system, it is ensured that inertia load effectively applies；Applying excitation moment to transmission system additionally by exciting device makes it produce twisting vibration；Then the torsional oscillation situation of transmission system is measured using torsional oscillation tester.Go for each wheelbase, the transmission system of each wheelspan by adjusting each functional areas relative position of stand.It can be engaged by changing adapter from different wheel hubs, lay different types of speed changer, connect different types of back axle, the experiment installation compared with polymorphic type front-engine rear-drive form transmission system rather than single type transmission system can be met.
Description
Technical field
The present invention relates to a kind of automotive power transmission system torsional test stand, front-engine rear-drive automobile is especially applied to
On, belong to automobile making detection technique field.
Background technology
Power drive system is the main vibration of vehicle, noise source, and the matching of its vibration characteristics and vehicle other systems will
Vehicle NVH performance levels are directly determined, thus are badly in need of studying the vibration noise of the power drive system of automobile, so as to carry
Go out effective chassis vibration noise solution.
At present, the domestic research to automotive power transmission system torsional oscillation is few to pass through examination mainly based on Modeling Calculation
The method tested studies the torsional oscillation situation of transmission system, relative to Modeling Calculation, by the method for experiment to Mobile Power Transmission
The test of Torsional vibration can more realistically reflect the actual torsional oscillation situation of transmission system with analysis.And the country is to power transmission
The torsional test of system is concentrated on individually in the experiment to power transmission shaft torsional vibration characteristic, lacks one to whole power transmission
The test method that system is carried out.Therefore it is badly in need of that Torsional Vibration of Shafts stand is studied and designed so that the stand can meet
The function of torsional oscillation test, and cause the stand of design that there is the characteristics of flexibility installation, it can be suitably used for a variety of automotive transmissions
System rather than certain single vehicle.
The content of the invention
In order to solve the above-mentioned technical problem, it is an object of the invention to establish a relatively reasonable automobile power-transmission system
System torsional oscillation testboard bay, in order that obtaining test data as far as possible with being actually consistent, it is necessary first to analyze front-engine rear-drive formula automobile
Power transfer path can simulate truth as far as possible so as to rationally design stand layout structure.Secondly in order that the stand
With, it is necessary to fully study stand mechanical structure, making it have certain adjustable degree using this extensive feature, and protect just its tear open
Dress is convenient, flexible adjustment.
Technical scheme fully studies common ground and the difference of different dynamic transmission system, it would be possible to produces
Different connection installation places carries out adjustable structure design, is designed using moveable structure or using replaceable structural design.
In order that the relative angle of power transmission shaft can be adjusted, stand is realized using the lifting of electronic screw mandrel and worm gear elevating mechanism
Region lifts.The structure related to force uses high-strength design in stand, and carries out simplation verification by finite element software, is dividing
Analyse and also carried out model analysis on the basis of its each rigidity of structure intensity, avoid the torsional oscillation scope of transmission system, prevent to tie
Structure resonates.
Specifically, the technical solution adopted by the present invention is：
A kind of automotive power transmission system torsional test stand, mainly by vehicle inertia simulation system, drive device, exciting
Device and loading device composition, it is characterised in that the work of drive device simulated engine, produce power drive engine flywheel
Rotate, whole transmission system is run according to normal driving cycle；Vehicle inertia simulation system simulating vehicle is transported on road
Existing motional inertia during row；Loading device supplementary inertial simulation system, it is ensured that inertia load effectively applies；Additionally by
Exciting device applies excitation moment to transmission system makes it produce twisting vibration；Then using torsional oscillation tester to transmission system
Torsional oscillation situation measure.
According to an aspect of the present invention, four big functional areas can be classified as according to the functional character of test-bed：
The area of function one is power source installing zone, is mainly used in installing dynamic property element needed for bench run；The area of function two is in power train
Between support installing zone, the center section for supporting drive shaft；The area of function three is back axle Support, after being supported according to actual conditions
Bridge；The area of function four is wheel hub installation and inertia load area, applies inertia load for stationary hub and for transmission system, wherein,
Horizontal level of the area of function one on stand is fixed, and function two, three, the position in 4th area are to adjust according to demand
's.
According to an aspect of the present invention, the area's stand of function one is furnished with electronic screw lift structure, its surrounding top flange
Disk is installed flat board with dynamic property element by bolt and is connected, and drives stand vertical direction to move under the driving of its lifting motor
It is dynamic, so as to meet the adjustable function of transmission system interaxis angle；Shock electric machine, driving electricity are installed on dynamic property element installation flat board
Machine, centrifugal vibrator, speed changer stand mounting seat, shock electric machine and motor pass through in belt and centrifugal vibrator
Respective pulley connects, and drives vibrator operation.
According to an aspect of the present invention, in order to facilitate shock electric machine, motor and centrifugal vibrator in dynamic property
Element installs the installation on flat board, and dovetail groove and T-slot are provided with slab construction, and it is centrifugal to be used for installation positioning for wherein dovetail groove
Vibrator and speed changer stand mounting seat, T-slot are used to install shock electric machine and motor.
According to an aspect of the present invention, the area of function two adjusts power transmission shaft intermediate support by turbine lifter and installed manually
The height of point, so as to realize the adjustable of power train interaxis angle；Height accessory plate supports two pieces of flat boards, plate by surrounding cylinder
Screw is provided with face, is easy to being connected in base and turbine box；The middle part of connecting cross beam and the method on turbine lifter
Blue disk is bolted, at the circular hole of both ends insertion intermediate support side plate, for interference fit；Intermediate support side plate passes through groove profile
Structure fits with frid, choose suitable tolerance fit and two plate faces be in contact side make chamfering, ensure smooth steady
Groove in move.
According to an aspect of the present invention, intermediate support sideskid can be smoothed out by supporting plate chute in intermediate support plates
Slide；Intermediate support side plate is hollow-core construction with intermediate support plates intersection, and lateral surface carries corresponding rectangular enclosing wall shape
Supporting construction, for supporting the intermediate support sideskid stretched out；With the regulation of turbine lifter, intermediate support side plate is in frid
In move up and down, so as to adjust the height of center section power transmission shaft.
According to an aspect of the present invention, in the area of function three, back axle connector is connected by bottom screw head with joint
Bar is connected through a screw thread, and back axle supports mounting seat to be connected by bolt with experiment ground, and joint connecting rod is welded on
Its upper end.
According to an aspect of the present invention, in the area of function four, main body stand mounting seat is in tabular, surrounding rounding,
Relevant position opens up longer bolt through-hole, is easy to be connected with ground, and wheel hub installation stand and pressure are welded with mounting seat
Tight mechanism stand；Flying wheel, which compresses, to be offered in rack base in three corresponding bolt through-holes in position and main body stand mounting seat
Stretching screw rod coordinate so that the stand can move within the specific limits relative to plate face.
According to an aspect of the present invention, wheel hub installation stand upper end is provided with parallel axis hole, and flying wheel compresses stand and is provided with
Parallel axis hole, hold-down mechanism stand are provided with circular hole, and three hole is in same level axially through Precision Machining, in order to ensure
Effectively flying wheel compresses.
According to an aspect of the present invention, wheel hub installation stand is identical with flying wheel compression bench top axis hole form, and
Using the inner side stand rolling bearing and shaft end limit disk of same model, position-arresting disk is connected by screw with each stand, limit
The movement of system wherein rotating shaft and rolling bearing.
Technical scheme has following technique effect：
1. adaptability is strong：Go for each wheelbase, the biography of each wheelspan by adjusting each functional areas relative position of stand
Dynamic system.It can be engaged by changing adapter from different wheel hubs, lay different types of speed changer, connection is different types of
Back axle, the experiment installation compared with polymorphic type front-engine rear-drive form transmission system rather than single type transmission system can be met；
2. it is strong to simulate authenticity：The design construction of stand is according to the actual installation on vehicle frame of car transmissions
's.Power transmission shaft can carry out orientation angle regulation by stand lowering or hoisting gear, and each motor of clutch end is also by rationally testing
Demonstrate,prove and select, the inertia simulation device of stand end enters accommodating allotment according to different automobile types with Beijing South Maxpower Technology Co. Ltd；Can be preferable
Meet the experiment matching of each vehicle, the true torsional oscillation shape of transmission system can be preferably simulated by being connected with stand each several part reasonable installation
Condition, good effect can be played to actual production and improvement；
3. strong operability：Install and easy to operate simple, replacing adapter is also relatively simple, and the lifting of stand can lead to
The lifting of electronic or manual mode is crossed, stand movement dismounting is all easier, avoids testing excessive high intensity, cumbersome behaviour
Make.
Brief description of the drawings
Fig. 1 is the Torsional Vibration of Shafts test-bed topology layout of the present invention；
Fig. 2 is the Torsional Vibration of Shafts test-bed general assembly schematic diagram of the present invention；
Fig. 3 is the big functional area schematic diagram of Torsional Vibration of Shafts test-bed four of the present invention；
Fig. 4 is the plot structure schematic diagram of function one of the present invention；
The area's agent structure of function one that Fig. 5 is the present invention splits schematic diagram；
Fig. 6 is the plot structure schematic diagram of function two of the present invention；
Fig. 7 is outside schematic diagram in the area's top structure of function two of the present invention；
The plot structure of function two that Fig. 8 is the present invention adjusts schematic diagram；
Fig. 9 is the plot structure schematic diagram of function three of the present invention；
Figure 10 is the plot structure schematic diagram of function four of the present invention；
The plot structure of function four that Figure 11 is the present invention splits schematic diagram；
Figure 12 be the present invention certain sample car transmission system and two, three, four functional areas scheme of installations；
Figure 13 is certain sample car power drive system and test-bed assembly schematic diagram of the present invention；
Reference：
1st, electronic screw lift structure 2, auxiliary support plate mounting seat 3, auxiliary support plate 4, the installation of dynamic property element
Platform 5, shock electric machine 6, motor 7, centrifugal vibrator 8, speed changer stand mounting seat 9, speed changer firm banking
10th, elevating mechanism link bolt hole 11, auxiliary support plate fixed bolt hole 12, dovetail groove 13, T-slot 14, vibrator peace
Fill base 15, height accessory plate 16, turbine lifter 17, connecting cross beam 18, intermediate support side plate 19, intermediate support plates
20th, small-sized bolt presses mechanism 21, rigidity reinforcing plate 22, frid 23, bolt through-hole 24, intermediate support sideskid 25, axle
Hold erection support 26, supporting plate chute 27, back axle support mounting seat 28, joint connecting rod 29, back axle connector 30,
Main body stand mounting seat 31, wheel hub installation stand 32, limiting plate 33, flying wheel compress stand 34, roller supporting stand
35th, hold-down mechanism stand 36, spiral hold-down mechanism 37, polyurethane roller 38, outside hubcap 39, the outside stand axis of rolling
Hold 40, bearing position-arresting disk 41, roller position-arresting disk 42, flange plate screw 43, roller installation main shaft 44, trident ring flange
45th, splined shaft 46, hub chuck 47, shaft end limit disk 48, inner side stand rolling bearing
Embodiment
Fig. 1 illustrates designed test-bed topology layout, it mainly by vehicle inertia simulation system, drive device,
Exciting device and loading device composition.According to the function of stand and requirement, test-bed replaces engine using motor, by
The scheme of simulated automotive transmission system operating mode on indoor stand, and transmission system is reversed to realize using NVH portable sets
The experiment of vibration state.Its operation principle is：The work of drive device simulated engine, produce power drive engine flywheel and turn
It is dynamic, whole transmission system is run according to normal driving cycle；Vehicle inertia simulation system simulating vehicle is run on road
During existing motional inertia；Loading device supplementary inertial simulation system, it is ensured that inertia load effectively applies；Additionally by sharp
Vibrating device applies excitation moment to transmission system makes it produce twisting vibration；Then using torsional oscillation tester to transmission system
Torsional oscillation situation measures.Fig. 2 is Torsional Vibration of Shafts test-bed general assembly schematic diagram, wherein the machinery knot comprising gantry designs
The form of structure and stand mounting platform.The present invention is from T-slot formula cast iron platform as mounting foundation.In order to facilitate stand
Installation and movement, from two-way T-shaped grooves formula platform in length and breadth.Base surrounding has rectangular recess respectively, for installing spring vibration-isolator
With damper, solve the vibration isolation problems of testing stand.
Shown in Fig. 3, four big functional areas can be classified as according to the functional character of stand, be followed successively by from left to right：
The area of function one is power source installing zone, is mainly used in installing dynamic property element needed for bench run；
The area of function two is power train intermediate support installing zone, the center section for supporting drive shaft；
The area of function three is back axle Support, and back axle is supported according to actual conditions；
The area of function four is wheel hub installation and inertia load area, applies inertia load for stationary hub and for transmission system.
Horizontal level of the area of function one on stand is fixed, and function two, three, and the position in 4th area is can be according to need
Ask regulation.Each functional areas detailed construction can be described below.
The area of function one (referring to accompanying drawing 4,5)
Fig. 4 is the plot structure schematic diagram of stand function one, and each motor and electronic screw lift structure have done simplification in figure.
The area's stand of function one is furnished with electronic screw lift structure 1, and the electronic surrounding top ring flange of screw lift structure 1 is by bolt with moving
Power element installation flat board 4 is connected, and the movement of stand vertical direction is driven under the driving of its lifting motor, so as to meet to be driven
The function of system between centers adjustable angle.
Dynamic property element installation flat board 4 is the major support members in the area of function one, and in plate profile structure, material is used as using steel
Material, need that shock electric machine 5, motor 6, centrifugal vibrator 7, speed changer stand mounting seat 8 are installed thereon.Wherein except becoming
Device outside fast device stand mounting seat 8 is by the way of type selecting purchase.Due to being provided with multiple vibration sections on installation flat board 4
Part, so the modal frequency of flat board is relatively low, it is necessary to which bottom appropriate support increases its modal frequency.Therefore by auxiliary support plate
3 are connected with dynamic property element mounting platform 4 by bolt.With the lifting of platform, auxiliary support plate 3 moves, because
Auxiliary support plate 3 is axially symmetric structure, so lower section sets two auxiliary support plate mounting seats 2 in mirror image to fix auxiliary
Supporting plate 3, so as to fix it vertically to the free degree.
Shock electric machine 5 and motor 6 are connected by belt and respective pulley in centrifugal vibrator 7, are driven
Vibrator is run.Speed changer in sample car transmission system is arranged on speed changer firm banking 9, the side plate of speed changer firm banking 9
There is stretching screw rod in outside, the fixation of different height position is carried out by bolt through-hole and speed changer stand mounting seat 8, due to difference
Test object mission case is not quite similar, so speed changer firm banking 9 can be made more according to actual test situation
Change.
Fig. 5 is that the area's agent structure of stand function one splits schematic diagram.In order to facilitate shock electric machine 5, motor 6, centrifugation
Formula vibrator 7, the installation on flat board 4 is installed in dynamic property element, dovetail groove 12 and T-slot 13, dovetail are provided with slab construction
Groove 12, which is used to install, positions centrifugal vibrator 7 and speed changer stand mounting seat 8, and T-slot is used to install shock electric machine 5 and driven
Dynamic motor 6.Centrifugal vibrator 7 is fixed in vibrator mounting seat 14, has trapezoidal block structure and dovetail groove 12 below base
Coordinate, and four by being stretched out on flat board screw rods are so as to spacing and fastening.
Two kinds of bolts hole, including the elevating mechanism connecting bolt being distributed in surrounding are provided with dynamic property element installation flat board 4
Hole 10 and the auxiliary support plate fixed bolt hole 11 in array distribution, it is respectively intended to the electronic screw lift structure 1 that is connected
With auxiliary support plate 3.The electronic surrounding ring flange of screw lift structure 1 is directly connected to place added with vibration damping with dynamic property installation flat board 4
Pad, also stand vibration is reduced added with cushion blocking between auxiliary support plate 3 and flat board.
Auxiliary support plate mounting seat 2 is connected by bolt with stand installation pedestal, is provided with reinforcement, is ensured it
Rigidity, while its side plate is hollow structure, for being engaged movement with the side plate of auxiliary support plate 3, the interior outside of supporting plate carries
The long strip type bolt through-hole stretched out on screw rod, with the side plate of auxiliary support plate mounting seat 2, which coordinates, to be fixed.
The bottom of speed changer stand mounting seat 8 equally has trapezoidal block structure to coordinate movement with dovetail groove, using interference fit.Its
Side plate is connected by screw with its bottom plate, can be dismantled, convenient to install speed changer firm banking 9.
The area of function two (referring to accompanying drawing 6,7,8)
Fig. 6 is the plot structure schematic diagram of stand function two, and wherein turbine lifter has done simplification.The functional areas pass through turbine liter
Drop device 16 adjusts the height of power transmission shaft intermediate support mount point manually, so as to realize the adjustable of power train interaxis angle.Highly
Requirement for height of the accessory plate 15 according to needed for actual tests carries out selective use, and auxiliary plate structure is simple, passes through surrounding cylinder
Two pieces of flat boards are supported, are provided with screw in plate face, are easy to being connected in base and turbine box.
The middle part of connecting cross beam 17 is bolted with the ring flange on turbine lifter 16, both ends insertion intermediate support
At the circular hole of side plate 18, for interference fit.Four pieces of frids 22 are respectively welded on rack base relevant position, and are added with rigidity
Strong plate 21 is connected, and rigidity strengthening version 21 is the structure to design by topological optimization, in order to ensure that the structure of the functional areas is firm
Degree.Frid 22 must assure that its perpendicularity with base in the fixation on base.Intermediate support side plate 18 by trench structure with
Frid 22 fits, and chooses suitable tolerance fit and makes chamfering on the two plate faces side that is in contact, ensures the groove of smooth steady
Interior movement.
Intermediate support plates 19 are welded on intermediate support side plate 18, are moved with the movement of turbine lifter 16.The region
Roof support structure is in hereafter elaborating.
Fig. 7 is outside schematic diagram in the area's top structure of function two, and bearing installation branch is fixed with intermediate support sideskid 24
Seat 25, bearing is made by elastomeric material, the vibration being delivered to during being tested for decrease on stand.It can be selected according to actual conditions
With the bearing erection support of different materials.Because the radial distance of different transmission system center support bearings is not quite similar, so
Intermediate support sideskid 24 can smooth out slip by supporting plate chute 26 in intermediate support plates 19.Contact surface between the two is done
Corresponding roughness and tolerance processing, ensures its motion credibility.Intermediate support side plate 18 and the intersection of intermediate support plates 19
For hollow-core construction, and lateral surface carries corresponding rectangular enclosing wall shape supporting construction, for supporting the intermediate support stretched out to break away
Plate 24.This part-structure uses dual fastening means, bolt through-hole at two is provided with intermediate support plates 19, in intermediate support side
Bolt hole is provided with slide plate 24, bolt moves by bolt hole and in bolt through-hole, is fastened in correct position.Both ends pass through outer
The small-sized bolt presses mechanism 20 in side compresses fastening, and the seal face of bolt presses mechanism uses high coefficient of friction material.
Fig. 8 is that the plot structure of function two adjusts schematic diagram, in this structure, with the regulation of turbine lifter 16, intermediate support
Side plate 18 moves up and down in frid 22, so as to adjust the height of center section power transmission shaft.According to the bearing of different radial distances
The relative distance of intermediate support plates 19 is adjusted, and then is fastened.
The area of function three (referring to accompanying drawing 9)
Fig. 9 is the plot structure schematic diagram of function three, and the structural area is used for the support situation for simulating actual back axle, due to difference
The supporting form of transmission system back axle is different, so being designed with different types of back axle connector 29, can determine according to the actual requirements
System, back axle connector 29 are connected through a screw thread by bottom screw head and joint connecting rod 28.Back axle support mounting seat 27 is logical
Cross bolt with experiment ground to be connected, and joint connecting rod 28 is welded thereon end.Ensure the perpendicularity with base.Testing stand
Frame is furnished with multiple identical structures, can select on demand, so as to reach true holding state.
The area of function four (referring to accompanying drawing 10,11)
Figure 10 is the plot structure schematic diagram of function four, and the part-structure is in order to install inertia roller and facilitate its dismounting, together
When play fixed conveyor system wheel hub and effectively for transmission system apply inertia load design.Main body stand mounting seat 30 is in
Tabular, surrounding rounding, relevant position open up longer bolt through-hole, are easy to be connected with ground, are welded in mounting seat 30
It is connected to wheel hub installation stand 31 and hold-down mechanism stand 35.It is corresponding that three positions are offered on the flying wheel compression base of stand 33
Bolt through-hole coordinates so that the stand can be relative to plate face in certain model with the stretching screw rod in main body stand mounting seat 30
Enclose interior movement.In order to prevent flying wheel from compressing stand 33 not to be bonded main body stand mounting seat 30 in bottom in mobile compaction process
Phenomenon occurs, and limiting plate 32 is set in mounting seat, and the limiting plate 32 is connected with mounting seat 30 by screw, effectively limited
Flying wheel compresses the free degree in stand 33 vertical direction.This TV station rack loading device is by hold-down mechanism stand 35 and spiral compression
Mechanism 36 is collectively constituted, and the polyurethane roller 37 that manually rotating screw hold-down mechanism 36 makes flying wheel compress on stand 33 is pressed
Polyurethane roller on bearing up pulley hub installation stand 31, so as to by the friction passing power between roller, apply inertia load.Pressure
The main body of tight mechanism stand 35 is in tabular, and top is used to install spiral hold-down mechanism 36 with circular hole, and rear, which carries, passes through topology
Optimize the strip reinforcement drawn, ensure its bending stiffness.Wheel hub installation stand 31 upper end is provided with parallel axis hole, and flying wheel compresses
Stand 33 is provided with parallel axis hole, and hold-down mechanism stand 35 is provided with circular hole, and three hole is in same level axially through Precision Machining
On face, in order to ensure effectively flying wheel compression.The present invention applies inertia load using polyurethane roller 37, and roller bodies are
Steel are made, and outer rim uses polyurethane material uniform fold, so as to reach good friction fit effect.This test-bed is equipped with
There is the inertia roller of multi-thickness, selected according to different complete vehicle qualities.Roller supporting stand 34 is by the base after topological optimization, side
Plate, reinforcement welding are spliced.Bottom is provided with bolt through-hole, easy to remove with being connected.The part stand be used for position and
The external part of inertia wheel shaft is supported, ensures the steady operation between inertia roller.
Figure 11 is that the plot structure of function four splits schematic diagram, due to the difference of each power train wheel hub form, so present gantries are matched somebody with somebody
The hub chuck 46 of a variety of dop forms is had, chuck connection end is internal spline form, is connected by spline with splined shaft 45.
The occasion of transmitting large torque can be effectively adapted to using spline, and can bear, compared with big load, to ensure steady operation.Wheel hub is installed
Stand 31 and flying wheel compress that the top axle well format of stand 33 is identical, and use the inner side stand rolling bearing 48 of same model with
And shaft end limit disk 47, position-arresting disk are connected by screw with each stand, the movement of limitation wherein rotating shaft and rolling bearing.
The other end of splined shaft 45 is welded on trident ring flange 44, and flange side surface opposite side is welded with 2 ring flanges
Screw rod 42, a roller install main shaft 43.Corresponding three circular holes in position are provided with polyurethane roller 37 and coordinate installation with it.Peace
After installing roller, roller is fixed by roller position-arresting disk 41, three relevant positions are equally provided with roller position-arresting disk 41
Circular hole, fastened in outside by nut.
For the upper end circular hole of roller supporting stand 34 with wheel hub installation stand 31, the circular hole that flying wheel is compressed in stand 33 is relative
Should.Outside stand rolling bearing 39 is installed in circular hole, and is fixed in by bearing position-arresting disk 40 in stand.Bearing is spacing
Disk 40 is connected by screw with stand mounting surface.Outside hubcap 38 is connected by screw with stand face, prevents roller from installing
The rotation of main shaft 43 damages to the external world.
Figure 12 is certain sample car transmission system and two, three, four functional areas scheme of installations, illustrates sample car transmission system and platform
The installation site relation in frame back-end function area.Figure 13 is certain sample car power drive system and test-bed assembly schematic diagram,
Each motor and speed changer simplify and represented in figure.
Example is shown
Certain front-engine rear-drive automobile transmission system installation operation example：
Stage one：The part preparatory stage
1) transmission system for testing vehicle is taken out first, takes out power transmission shaft (including center support bearing seat), back axle, bag
Include used speed changer.Measure test carriage transmission system length and width, according to measurement result in mounting foundation preliminary display unit
Each functional areas of frame.
2) after tentatively arranging each function plot structure of stand, selected or customized according to the feature of this transmission system and be corresponding
Mounting adaptation part.This transmission system hubless feature is examined, chooses suitable wheel hub mounting disc 46；Its back axle is observed in reality
Connected mode in car, from suitable back axle connector 29, and select appropriate number of back axle support assembly (i.e. function three
Plot structure)；The structure of its mission case is observed, from suitable speed changer firm banking 9.
3) finally according to the technical parameter and testing requirement of test vehicle, by calculating, from different-thickness and quantity
Polyurethane roller 37.
Stage two：Stand erection stage
4) because the vertical height in the area of function four in platform system is to limit, can not change, so we open from function
Begin to install.The wheel hub mounting disc 46 chosen is connected by spline with splined shaft 45, by transmission system wheel hub and wheel hub mounting disc
It is installed together, by mobile main body stand mounting seat 30, its clamping is not released, finally pass through main body stand mounting seat 30
Bolt is fixed with experiment ground.
5) after installing hub end, the back axle connector 29 selected is arranged in joint connecting rod 28, according to reality
The plot structure of function three is put in position, and back axle support mounting seat 27 is fixed on ground by bolt.
6) followed by the installation of the plot structure of function two, power transmission shaft is put to the lower position of intermediate support plates 19,
The intermediate support sideskid 24 on both sides is adjusted, its distance is met the radial distance of intermediate bearing, is attached with bolt.Use
Small-sized bolt presses mechanism 20 compresses to sideskid, and blending bolt passes through bolt through-hole 23 and intermediate support sideskid 24
On bolt hole pretension fix,
7) followed by the installation of the plot structure of function one, first passing through shake turbine lifter 16 makes power transmission shaft center section
Electronic screw lift structure 1 is used after the contrast height that (selects height accessory plate 15 according to the actual requirements) after reaching proper height
The height of the area's stand of regulatory function one.First wife's speed changer is arranged on suitable gearbox firm banking 9 first.Unclamp speed change
The side plate of device stand mounting seat 8, speed changer firm banking is put into, then side plate is fixed up.Pass through speed changer stand
The trapezoid block of the bottom of mounting seat 8, the dovetail groove 12 being embedded on dynamic property element mounting platform 4 are moved into suitable position, just
Connected in power transmission shaft input.Centrifugal vibrator 7 is welded in vibrator mounting seat 14, again by base
Correct position is arrived it in the cooperation of trapezoid block and dovetail groove, and is fastened by stretching out screw rod, is connected with flywheel and speed changer.Will
Motor 6 and shock electric machine 5 are moved to correspondence position by T-slot 13 and are fastened on platform, by belt with it is centrifugal
Vibrator 7 is connected.Due to the lifting of electronic screw lift structure 1, auxiliary support plate 3 with dynamic property element mounting platform 4 together
Motion, gets off to need to fasten auxiliary support plate 3 by both sides screw rod with auxiliary support plate base 2, reaches effective supporting role.
Stage three：Inertia load erection stage
8) suitable inertia load has been selected in above-mentioned steps.Unclamp the bottom nut of roller supporting stand 34 and laterally
Remove, unclamp the nut on roller position-arresting disk 41.Spiral hold-down mechanism 36 is loosened by handle.Unclamp flying wheel and compress stand 33
Three nuts on base, it is mobile it, make to cancel contact between two polyurethane rollers 37, added or reduced according to quality requirement
Polyurethane roller 37.Because the temporary support that roller installation main shaft 43 plays is acted on so without people during roller is changed
Work supports.Stand is recovered to original state (according to step inverse operations) again after changing, ensures to be bonded between polyurethane roller 37
Closely.Roller supporting stand 34 is finally moved to original position, compresses and plays positioning action.
Respective sensor is installed after end of operation, torsion analogy can be carried out by adjusting each motor speed.
In general, the technical scheme of use, has the advantage that feature：
A) completeness is strong：Including the stand can cover the whole power drive system of automobile.Torsional oscillation survey is integrally carried out to it
Examination, rather than single power transmission shaft, all test specimens, are all to use former vehicle, certainly, instead of starting in addition to first wife's engine
The motor of machine is also the actual performance that can almost cover most of engine；
B) strong adaptability, raising test accuracy：Different automobile types, various sizes of power drive system are not only adapted to, and
And the installment state of experiment is consistent substantially with the confined state on true vehicle body, can preferably reflect reality to a certain extent
Situation；
C) simple to operate, each several part stand works relatively independent and effective：Stand operation installation basic step is unified and suitable
Sequence is strong, and Each performs its own functions for each several part stand, and dismounting is safeguarded all more independent convenient, and equipped with various adapter structures, can allow examination
Test the in good order of progress.All stands all entered finite element analysis software optimization, will not also be produced on the basis of proof strength rigidity
Raw resonance, so as to influence test accuracy.
Claims (6)
1. a kind of automotive power transmission system torsional test stand, mainly filled by vehicle inertia simulation system, drive device, exciting
Put and formed with loading device, it is characterised in that the work of drive device simulated engine, produce power drive engine flywheel and turn
It is dynamic, whole transmission system is run according to normal driving cycle；Vehicle inertia simulation system simulating vehicle is run on road
During existing motional inertia；Loading device aids in vehicle inertia simulation system, it is ensured that inertia load effectively applies；It is logical in addition
Crossing exciting device makes its produce twisting vibration transmission system application excitation moment；Then using torsional oscillation tester to power train
The torsional oscillation situation of system measures；Functional character according to test-bed can be classified as four big functional areas：The area of function one
For power source installing zone, it is mainly used in that dynamic property element needed for test-bed operation is installed；The area of function two is to be propped up among power train
Installing zone is held, the center section for supporting drive shaft；The area of function three is back axle Support, and back axle is supported according to actual conditions；
The area of function four is wheel hub installation and inertia load area, applies inertia load for stationary hub and for transmission system, wherein, function
Horizontal level of one area on test-bed is fixed, and the position in the area of function two, three, four is to adjust according to demand
's；
The area's test-bed of function one is furnished with electronic screw lift structure, and electronic screw lift structure surrounding top ring flange passes through spiral shell
Bolt is connected with dynamic property element installation flat board；Shock electric machine, motor, centrifugal is installed on dynamic property element installation flat board
Vibrator and speed changer stand mounting seat, shock electric machine and motor pass through respective pulley in belt and centrifugal vibrator
Connect, drive centrifugal vibrator to run；
The area of function two adjusts the height of power transmission shaft intermediate support mount point by turbine lifter manually, so as to realize power train axle
Between angle it is adjustable；The middle part of connecting cross beam is bolted with the ring flange on turbine lifter, among the insertion of both ends
At the circular hole of supporting side plate, for interference fit；Intermediate support side plate is fitted by trench structure and frid, is chosen suitable public
Difference coordinate and two plate faces be in contact side make chamfering, ensure to move in the groove of smooth steady；Intermediate support sideskid can lead to
Cross supporting plate chute and slip is smoothed out in intermediate support plates；Intermediate support side plate and intermediate support plates intersection are hollow-core construction,
And lateral surface carries corresponding rectangular enclosing wall shape supporting construction, for supporting the intermediate support sideskid stretched out；With turbine
The regulation of lifter, intermediate support side plate move up and down in frid, so as to adjust the height of center section power transmission shaft.
2. automotive power transmission system torsional test stand as claimed in claim 1, it is characterised in that dynamic property element is installed
Dovetail groove and T-slot are provided with flat board, wherein dovetail groove, which is used to install, positions centrifugal vibrator and speed changer stand installation
Seat, T-slot are used to install shock electric machine and motor.
3. automotive power transmission system torsional test stand as claimed in claim 1, it is characterised in that in the area of function three,
Back axle connector is connected through a screw thread by bottom screw head and joint connecting rod, and back axle supports mounting seat to pass through bolt and examination
Ground is tested to be connected.
4. automotive power transmission system torsional test stand as claimed in claim 1, it is characterised in that in the area of function four,
Main body stand mounting seat is in tabular, and surrounding rounding, relevant position opens up longer bolt through-hole, is easy to connect with experiment ground
Fixation is connect, wheel hub installation stand and hold-down mechanism stand are welded with main body stand mounting seat.
5. automotive power transmission system torsional test stand as claimed in claim 4, it is characterised in that on wheel hub installation stand
End is provided with parallel axis hole, and flying wheel compresses stand and is provided with parallel axis hole, and hold-down mechanism stand is provided with circular hole, three hole axially through
Precision Machining is in same level.
6. automotive power transmission system torsional test stand as claimed in claim 5, it is characterised in that wheel hub install stand with
Flying wheel compression bench top axis hole form is identical, and using the inner side stand rolling bearing and shaft end limit of same model
Disk, position-arresting disk are connected by screw with each stand, the movement of limitation wherein rotating shaft and rolling bearing.
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