CN106769102A - A kind of simulated automotive wheel cylinder deceleration loading device of cavity volume continuously adjustabe - Google Patents
A kind of simulated automotive wheel cylinder deceleration loading device of cavity volume continuously adjustabe Download PDFInfo
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- CN106769102A CN106769102A CN201710043573.6A CN201710043573A CN106769102A CN 106769102 A CN106769102 A CN 106769102A CN 201710043573 A CN201710043573 A CN 201710043573A CN 106769102 A CN106769102 A CN 106769102A
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- slide rail
- bearing
- leading screw
- decelerator
- installing plate
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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
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
Abstract
The present invention needs to change the problem of different size brake to overcome existing automobile brake perfrmance testboard bay in different automobile types test process,Propose a kind of automobile brake perfrmance test load device of cavity volume continuously adjustabe,The present apparatus includes being fixed on the single-action hydraulic cylinder of bottom bracket one end,The motor for being fixed on the bottom bracket other end and the leading screw being fixed in the middle part of bottom bracket,Leading screw input is connected with motor output end,The output shaft of single-action hydraulic cylinder is fixed on a sliding block,Sliding block can be slided on the linear slide rail of leading screw both sides,The rotational band movable slider of motor slides the volume to compress or stretch the output shaft of single-action hydraulic cylinder so as to control single-action hydraulic cylinder on leading screw,To simulate the braking ability of the brake of the different size for needing testability,The present apparatus need not frequently change disk brake when different automobile types braking ability is tested,Optimum Experiment stand is conducive to arrange,Reduce test-bed cost.
Description
Technical field
The present invention relates to a kind of device of simulating brake circuitry brake, it more particularly relates to a kind of cavity volume
The simulated automotive wheel cylinder deceleration loading device of continuously adjustabe.
Background technology
Automobile brake perfrmance testboard bay is a relatively common class auto test bed, wherein braking performance test stand
Deceleration loading part be typically made up of real vehicle brake, principle be by wheel cylinder in brake set up back pressure formed braking
Load.Research shows, automobile in braking procedure, reaction time, the brake force of the size of wheel cylinder to brakes
Square size, severity of braking tool have a significant impact, while wheel cylinder is same with the size matching of master cylinder can be to braking ability
Large effect is produced, therefore the wheel cylinder of different size specification influences very big to the response characteristic of deceleration loading.But due to
The volume of different automobile types wheel cylinder is different, and the braking ability showed under identical operating mode is different, therefore in test different automobile types
Performance when, stand needs to be replaced by the brake of the corresponding specification of vehicle therewith, and this builds cost, sky for test-bed
Between configuration, mounting and adjusting and experimental implementation all there are many unfavorable factors.In order to avoid changing the operation of brake, examination is reduced
Test cost, optimization rack space configuration, the invention provides a kind of simulated automotive wheel cylinder deceleration loading dress of cavity volume continuously adjustabe
Put.
The content of the invention
The technical problems to be solved by the invention are to overcome existing automobile brake perfrmance testboard bay to be surveyed in different automobile types
The problem of replacing different size brake is needed during examination, proposes that a kind of automobile brake perfrmance test of cavity volume continuously adjustabe is negative
Carry and put.
In order to solve the above technical problems, the present invention is to employ following concrete technical scheme：
The simulated automotive wheel cylinder deceleration loading device of a kind of cavity volume continuously adjustabe, it is characterised in that including a bottom branch
Frame, the front end of bottom bracket fixedly mounts a single-action hydraulic cylinder by stand type support, and bottom bracket middle part is pacified by slide rail
Dress aluminium section bar is fixed with two lines slide rail, there is a leading screw between two lines slide rail, leading screw by front end bearing spider, after
Deep groove ball bearing inside end bearing bearing and above-mentioned two bearing is arranged between two lines slide rail, leading screw and deep-groove ball axle
Interference fit is used between holding, wherein, one end of leading screw is the rear end bearing seat end cap through rear end bearing bearing, two lines
Property slide rail on be separately installed with one can along linear slide rail slide sliding block, two side slides with sliding block mounting platform fix connect
Connect, sliding block mounting platform upper surface is fixed with a hold-down support, front end and the hold-down support top of hydraulic cylinder piston rod use
Clamp nut is connected, and sliding sleeve and sliding sleeve installing plate are located at slip front, and sliding sleeve is installed with the external screw thread of leading screw by internal thread and matched somebody with somebody
Close, sliding sleeve installing plate and the movement of slide rail mounting platform are driven while sliding sleeve is moved under the rotation of leading screw, slide rail is installed
Property slide rail is slided along platform band movable slider, and leading screw passes through shaft coupling and is fixed on bottom branch through one end of rear end bearing bearing
The output shaft connection of one angular gear decelerator of frame rear end, angular gear decelerator outside is by connecting shield and driving electricity
Machine is connected, and the input shaft inside angular gear decelerator is driving motor output shaft, the fixed installation of sliding block mounting platform rear end
There is a displacement sensor end to fix angle bar, rear end bearing seat end cap top is installed with a stay-supported displacement sensing
Device, is the bracing wire of stay-supported type displacement sensor between stay-supported type displacement sensor and displacement sensor end fixation angle bar.
Further technical scheme includes：
Hold-down support is fixedly connected with slide rail mounting platform by trip bolt, and sliding sleeve and a sliding sleeve installing plate are by tight
Gu mode connects for screw, sliding sleeve installing plate and sliding block mounting platform front end are connected by trip bolt；
Leading screw is fixed on slide rail and installs by deep groove ball bearing, front end bearing spider, rear end bearing bearing and fixing screws
Aluminium section bar center, front end bearing spider and rear end bearing bearing are fixed on slide rail and install two before and after aluminium section bar by fixing screws
End, deep groove ball bearing and rear end bearing bearing, front end bearing spider interference fit；
Linear slide rail is arranged on the orbit plane that slide rail installs aluminium section bar both sides upper surface, before linear slide rail one end is resisted against
After end bearing bearing on surface, the other end is inserted the through hole of casting right angle seat bottom and is arranged in orbit plane by fastening bolt
The slider nut in portion is fixedly connected, and casting right angle seat front-end surface is resisted against one end of linear slide rail, with front end bearing spider together
Linear slide rail is fixed.
Described angular gear decelerator is fixed on the rear end of bottom bracket by a decelerator installing plate, and described subtracts
Fast device installing plate is a block length 190mm, and a width of 150mm, thickness is the steel plate of 5mm, is provided with four angles of decelerator installing plate straight
Footpath is the screwed hole of 6mm, and decelerator installing plate middle setting has four through holes of a diameter of 5mm, with angular gear decelerator
Base bottom mounting hole is corresponding, and decelerator installing plate passes through trip bolt parallel to bottom of device support, decelerator installing plate
It is fixedly connected with slider nut and bottom bracket through the screwed hole at four angles.
The input of leading screw and the output end of angular gear decelerator are connected using shaft coupling, and shaft coupling uses plum blossom
Shaft coupling, shaft coupling is constituted by by two shaft coupling dogs and a flexible member, and two elastic dogs are mutually stung in dog direction
Close, radial direction interocclusal clearance position is filled by plum blossom flexible member, leading screw one end and shaft coupling dog use flat with leading screw input
Key is fixedly connected, and using flat key fixed same with the output shaft of angular gear decelerator of the dog of angular gear decelerator one end is connected
Connect.
Compared with prior art it is an advantage of the invention that:
1) present invention is driven with motor, drives piston rod movement to change simulating brake wheel cylinder cavity volume size through transmission mechanism
To simulate the wheel cylinder volume size of different automobile types, the purpose of simulation different size wheel cylinder deceleration loading is reached；
2) can to simulate the brake of not co-content specification negative with simulating brake for the simulating brake wheel cylinder of volume continuously adjustabe
Carry, therefore brake need not be frequently changed during test different automobile types braking ability；Be conducive to simplifying bench test operation；
3) can to simulate the brake of not co-content specification negative with simulating brake for the simulating brake wheel cylinder of volume continuously adjustabe
Carry, it is not necessary to prepare the brake of different size, it is possible to decrease test-bed cost；
4) from aforementioned advantages, test-bed need not frequently change brake, therefore during the space arrangement of planning stand,
Optimum Experiment stand need not be conducive to arrange to change brake and headspace；
Brief description of the drawings
Patent of the present invention is described in detail below in conjunction with the accompanying drawings：
Fig. 1 is that a kind of simulated automotive wheel cylinder load device structure composition of cavity volume continuously adjustabe of the present invention shows
It is intended to；
Fig. 2 is that a kind of simulated automotive wheel cylinder load device structure composition of cavity volume continuously adjustabe of the present invention is bowed
View；
Fig. 3 is a kind of simulated automotive wheel cylinder load device single-acting hydraulic of cavity volume continuously adjustabe of the present invention
Cylinder schematic diagram；
Fig. 4 be a kind of cavity volume continuously adjustabe of the present invention simulated automotive wheel cylinder load device motor,
Angular gear decelerator and shaft coupling scheme of installation；
Fig. 5 is that a kind of simulated automotive wheel cylinder load device transmission mechanism of cavity volume continuously adjustabe of the present invention shows
It is intended to；
Fig. 6 is that a kind of simulated automotive wheel cylinder load device hold-down support of cavity volume continuously adjustabe of the present invention is consolidated
Determine schematic diagram；
Fig. 7 is a kind of simulated automotive wheel cylinder load device front end bearing end of cavity volume continuously adjustabe of the present invention
Lid fixed form schematic diagram；
Fig. 8 is that a kind of simulated automotive wheel cylinder load device sliding sleeve of cavity volume continuously adjustabe of the present invention installs solid
Determine schematic diagram；
Fig. 9 is a kind of simulated automotive wheel cylinder load device stay-supported displacement of cavity volume continuously adjustabe of the present invention
Sensor fixed form schematic diagram；
Figure 10 is a kind of simulated automotive wheel cylinder load device stay-supported position of cavity volume continuously adjustabe of the present invention
Displacement sensor measurement end fixed form schematic diagram；
Figure 11 is that a kind of simulated automotive wheel cylinder load device shaft coupling of cavity volume continuously adjustabe of the present invention shows
It is intended to；
Figure 12 is a kind of simulated automotive wheel cylinder load device shaft coupling bullet of cavity volume continuously adjustabe of the present invention
Property element schematic；
Figure 13 is that a kind of simulated automotive wheel cylinder load device shaft coupling of cavity volume continuously adjustabe of the present invention is convex
Pawl；
Figure 14 is a kind of simulated automotive wheel cylinder load device motor of cavity volume continuously adjustabe of the present invention
Control principle drawing.
In figure：1. single-action hydraulic cylinder, 2. hydraulic cylinder fix bar, 3. hydraulic cylinder piston rod, 4. sliding sleeve, 5. hold-down support,
6. sliding block mounting platform, 7. displacement sensor end fix angle bar, 8. leading screw, 9. stay-supported type displacement sensor, 10. rear end axle
Bearing end cap, 11. shaft couplings, 12. angular gear decelerators, 13. motors, 14. bottom brackets, 15. front end bearing spiders,
16. slide rails install aluminium section bar, and 17. sliding blocks, 18. linear slide rails, 19. stay-supported type displacement sensors fix angle bar, 20. rear end bearings
Bearing, 21. decelerator installing plates, 22. front end bearing spider end caps, 23. bleed screws, 24. fixing screws, 25. fixed screws,
26. clamp nuts, 27. sensor bracing wires, 28. sliding sleeve installing plates, 29. deep groove ball bearings.30 fastening bolts, 31 casting right angle seats,
32. slider nuts, 33. connection shields.
Specific embodiment:
The present invention is explained in detail below in conjunction with the accompanying drawings：
Refering to Fig. 1 and Fig. 2, a kind of simulated automotive wheel cylinder deceleration loading device bag of cavity volume continuously adjustabe of the present invention
Include single-action hydraulic cylinder 1, hydraulic cylinder fix bar 2, hydraulic cylinder piston rod 3, sliding sleeve 4, hold-down support 5, sliding block mounting platform 6, silk
Thick stick 8, stay-supported type displacement sensor 9, shaft coupling 11, angular gear decelerator 12, motor 13, bottom bracket 14, front end axle
Hold bearing 15, slide rail and aluminium section bar 16, sliding block 17, linear slide rail 18, rear end bearing bearing 20, decelerator installing plate 21, preceding is installed
End bearing bearing end cap 22, sliding sleeve installing plate 28, deep groove ball bearing 29, connection shield 33 are constituted.
A kind of simulated automotive wheel cylinder deceleration loading device of cavity volume continuously adjustabe, including a bottom bracket 14, bottom branch
Frame front end fixedly mounts a single-action hydraulic cylinder 1 by stand type support, and aluminium section bar is installed in the middle part of bottom bracket 14 by slide rail
16 are fixed with two lines slide rail 18, there is a leading screw 8 between two lines slide rail 18, leading screw 8 by front end bearing spider 15,
Deep groove ball bearing 29 inside rear end bearing bearing 20 and correspondence bearing is arranged between two lines slide rail 18, leading screw 8 and deep
Interference fit is used between ditch ball bearing 29, a sliding block that can be slided along linear slide rail 18 is installed on two lines slide rail 18
17, two side slides 17 are fixedly connected with sliding block mounting platform 6, and the upper surface of sliding block mounting platform 6 is fixed with a hold-down support
5, the front end of hydraulic cylinder piston rod 3 is connected with the top of hold-down support 5 using clamp nut 26, sliding sleeve 4 and sliding sleeve installing plate 28
In the front end of sliding block 17, sliding sleeve 4 is screwed in leading screw 8 by internal thread and installed, and sliding sleeve 4 is moved under the rotation of leading screw 8, while
Sliding sleeve installing plate 28 and slide rail mounting platform 6, slide rail mounting platform 6 is driven to be slided along linear slide rail 18 with movable slider 4, leading screw 8
Slowed down with an angular gear for being fixed on the rear end of bottom bracket 14 by shaft coupling 11 one end of protrusion rear end bearing bearing 20
The output shaft connection of device 12, the outside of angular gear decelerator 12 is connected by connecting shield 33 with motor, and angular gear subtracts
Input shaft inside fast device 12 is the output shaft of motor 13, and the rear end of sliding block mounting platform 6 is installed with a displacement and passes
Sensor measurement end fixes angle bar 7, and the top of rear end bearing seat end cap 10 is installed with a stay-supported type displacement sensor 27, bracing wire
It is the bracing wire of stay-supported type displacement sensor 27 between formula displacement transducer 27 and displacement sensor end fixation angle bar 7.
Described bottom of device support 14 is a tower structure part for rectangle plane, by 2 longerons, 6 crossbeams and 4
Root vertical beam is constituted.Four crossbeams of uniform arrangement between two longerons, are connected by casting right angle seat 31 and trip bolt 24 and slider nut
Connect fixation.Longeron is made by the section bar of model 4040, this be a kind of section be length of side 40mm square, each side has one
The section bar of individual T-shaped groove, longeron length is 1000mm in embodiment.Fixed installation is used in described bottom of device support
Fastening bolt 30 is the special button-headed bolt of model HOU6x12-6, and casting right angle seat 31 is that the Europe superscript of model HOU3030 connects
Fitting, slider nut 32 is the Europe superscript connector of model HOU5-8-30.Bottom support bracket front end is by four vertical beams and two horizontal strokes
Beam constitute, all of beam be made by the section bar of model 3030.The casting right angle seat 31 is the Europe superscript of model HOU3030
Connector, slider nut 32 is the Europe superscript connector of model HOU5-8-30.
Refering to Fig. 3, simulated automotive wheel cylinder load device uses single-action hydraulic cylinder 1, by changing hydraulic cylinder 1
Volume carry out the size of simulating brake wheel cylinder, the response characteristic of deceleration loading is changed, to meet simulation different automobile types system
The requirement of dynamic load, while the movement of piston rod causes the change in location of stay-supported type displacement sensor 9, stay-supported type displacement sensor
9 displacement registrations can be displayed on sensor liquid crystal display, and wheel cylinder volume information is transformed into by calculating.
What described single-action hydraulic cylinder 1 was chosen is the single-action hydraulic cylinder 1 of model MOB-FA30*80, and hydraulic cylinder is solid
Fixed pole 2 has fixed angles ferropexy hole and cylinder body bearing longitudinally fixed hole of the screw thread one end through both sides, interior hexagonal cylindrical nut
The screw thread of hydraulic cylinder fix bar 2 is screwed in by oil cylinder and fixed angles ferropexy.Cylinder body upper end is provided with a diameter of close to oil inlet side
The screwed hole of 6mm, bleed screw 23 is arranged on cylinder body upper end by screwed hole.The tail end of hydraulic cylinder piston rod 3 has screw thread, can lead to
Clamp nut 26 is crossed to be fixedly connected with hold-down support 5.
It is respectively motor 13, connection shield 33, angular gear decelerator 12, decelerator installing plate refering to Fig. 4, in figure
21.Decelerator installing plate 21 is a block length 190mm, and a width of 150mm, thickness is the steel plate of 5mm, and a diameter of 6mm is provided with corner
Screwed hole, the middle setting of decelerator installing plate 21 has four through holes of a diameter of 5mm, with decelerator base bottom mounting hole phase
Correspondence.Decelerator installing plate 21 passes through four parallel to bottom of device support 14, decelerator installing plate 21 by fastening bolt 30
Screwed hole at angle is fixedly connected with slider nut 32 and bottom bracket 14.
Refering to Fig. 5, Fig. 6, Fig. 7, Fig. 8, aluminium section bar 16, linear slide rail 18, preceding end bearing branch are installed by slide rail by Tu Zhong mechanisms
Seat end cap 22, rear end bearing bearing end cap 10, leading screw 8, sliding sleeve installing plate 28, sliding block mounting platform 6, linear slide rail 18, zanjon
Ball bearing 29, front end bearing spider 15, rear end bearing seat 20, some compositions of fastening bolt 30.
Described slide rail installs the section bar that aluminium section bar 16 uses model HK120, and material model is 6023T5.Fastening
The through hole of the insertion casting of bolt 30 right angle 31 bottoms of seat is fixedly connected with the slider nut 32 inside bottom of device support 14,
Casting right angle seat 31 is resisted against slide rail and installs the two ends of aluminium section bar 16, and slide rail installation aluminium section bar 16 is fixed on the fixation of bottom bracket 14
Position.
What described linear slide rail 18 was selected is the linear slide rail of model HGW4CC, and linear slide rail 18 is through special beam system
Structure design, can simultaneously bear load up and down.Two sets of guide rails are separately mounted to slide rail and install the both sides upper table of aluminium section bar 16
The orbit plane in face, one end of linear slide rail 18 is resisted against on the rear surface of the front end bearing spider 15 of front end, and linear slide rail 18 is another
One end fix method be：The through hole and the sliding block being arranged on inside orbit plane of the insertion casting of fastening bolt 30 right angle 31 bottoms of seat
Nut 32 is fixedly connected, and casting right angle 30 front-end surfaces of seat are resisted against one end of linear slide rail 18, with front end bearing spider 15 together
Linear slide rail 18 is fixed.Sliding block 17 on linear slide rail 18 has self-locking nut, when regulation is to target location, can tighten
Self-locking nut, makes sliding block 17 be fixed on specified location, and anti-limited slip block 17 loosens.
The bearing spider of the model WBK17DF-WBK40DFF that described front end bearing spider 15 is selected, fixing screws 24
Through bearing spider two ends, totally four screwed holes are fixedly connected with the screwed hole on slide rail installation aluminium section bar 16, front end bearing spider
The deep groove ball bearing 29 that 15 inside are installed, what described deep groove ball bearing 29 was chosen is the high carbon chromium axle of model RQZC30200
Hold steel shaft to hold, fastening bolt 30 is fixed by the screwed hole of front end bearing spider end cap 22 with the screwed hole of front end bearing spider 15
Connection.Rear end bearing bearing 20 is consistent with front end bearing spider 15 from model, mounting means, and difference is rear end bearing bearing end
The middle setting of lid 10 has the through hole of a diameter of 20mm, is that screw mandrel 8 provides space.
What described leading screw 8 was chosen is the high-speed silent leading screw of model XSVR01520, the front end of leading screw 8 and deep-groove ball axle
Hold 29 and use interference fit, the rear end of leading screw 8 uses interference fit with the inner ring of rear end deep groove ball bearing 29.Fixing screws 24 are by sliding
Cover the screwed hole of 4 front-end surfaces and sliding sleeve installing plate 28, by sliding sleeve 4 and sliding sleeve installing plate 28 be fastenedly connected.Fixing screws 24
By the front-end surface of sliding sleeve installing plate 28 and the screwed hole of the front end of sliding block mounting platform 6, by sliding sleeve installing plate 28 and sliding block sliding block
Mounting platform 6 is fastenedly connected.Fixing screws 24 are screwed in corresponding on sliding block 17 through the counterbore of the upper surface of sliding block mounting platform 6
The screwed hole of a diameter of 2mm, sliding block mounting platform 6 is fixedly connected with two side slides 17.Fastening bolt 30 passes through hold-down support 5
Mounting hole and screw in the screwed hole of a diameter of 2mm in the upper surface of sliding block mounting platform 6, hold-down support 5 and sliding block are installed flat
Platform 6 is fixedly connected.Hold-down support 5 is fixedly connected with hydraulic cylinder piston rod 3, specific method is:Clamp nut 26 screws in hydraulic pressure
Screw thread on cylinder piston rod 3, the one end of hydraulic cylinder piston rod 3 is now passed through the mounting hole of the upper end of hold-down support 5, by clamp nut
The front-end surface of hold-down support 5 is close in 26 side, and another piece of clamp nut 26 is now screwed in the screw thread of hydraulic cylinder piston rod 3,
Clamp nut 26 is set to be close to the rear end surface of hold-down support 5.
The input shaft of leading screw 8 is connected by shaft coupling 11 with the output shaft of angular gear decelerator 12, and described shaft coupling 11 is adopted
It is the high intensity blossom type shaft coupling of model KH8-20, fixed form is fixed for groove type.By the input shaft of leading screw 8 with it is oblique
The output shaft of gear decelerator 12 inserts the two ends of shaft coupling 11 respectively, makes the output shaft of angular gear decelerator 12 defeated with leading screw 8
Enter axle to be fixedly connected.
What described motor 13 was selected is model YVP250M-2 three-phase frequency-conversion speed-regulation motors.Described tooth
What wheel decelerator 12 was selected is model R47-Y11.5KW-4P-12.54 angular gears decelerator 12, and mounting means is horizontal peace
Dress.
Described motor 13 circumference array in power output end housing arranges 4 screwed holes of a diameter of 6mm, institute
The connection shield 33 stated arranges 4 screwed holes of a diameter of 6mm towards the same circumference permutation in motor one end, and fixing screws 24 pass through
Be fixedly connected for two parts with the screwed hole for being connected shield 33 by motor 13.Connection shield 33 is in angular gear decelerator 12 1
End circumference arranges 4 screwed holes of a diameter of 6mm of arrangement, the same circumference array around the input shaft of angular gear decelerator 12
4 screwed holes of a diameter of 6mm of arrangement, fixing screws 24 will with the screwed hole for being connected shield 33 by angular gear decelerator 12
Two parts are fixedly connected.What fixing screws 24 were chosen is the special button-headed screw of model HOU-6x12-6.Angular gear subtracts
The base every nook and cranny of fast device 12 is both provided with the through hole of a diameter of 6mm, and the position of through hole is logical with accelerator installing plate 21
Hole arrangement is consistent, and fastening bolt 30 passes through the through hole of base and decelerator installing plate 21 and is close to the lower surface of decelerator installing plate 21
Clamp nut 26 be fixedly connected.
The positive and reverse rotation control circuit of described three-phase frequency-conversion speed-regulation motor, as shown in figure 13, SB1 is rotating forward to line map
Start button, SB2 is reversion start button, separately has stop button SB3, Q1 and Q2 for relay, and M is three-phase alternating-current motor.
Its operation principle is：During rotating forward, button SB1 is pressed, relay Q1 must inhale electricity and self-locking, and its normally opened contact is closed, and motor is just
Often operation；During stopping, the release of button SB3, K1 dead electricity is pressed, motor stops.During reversion, button SB2 is pressed, relay K2 is obtained
Electricity is inhaled and simultaneously self-locking, its normally opened contact closure, motor reversal operation；During stopping, the release of button SB3, K2 dead electricity is pressed, it is electronic
Machine stops.Control circuit is series at frequency converter inside electrothermal relay normally closed auxiliary contact, improves circuit protection performance.
Refering to Fig. 9, Figure 10, the small-range of the model MPS-XS-4-20mA that described stay-supported type displacement sensor 9 is selected
Stay-supported type displacement sensor, the both sides of stay-supported type displacement sensor 9 are respectively arranged with the installation screwed hole of a diameter of 4mm, while
The upper end of rear end bearing bearing 20 is provided with 2 installation screwed holes of a diameter of 4mm, stay-supported type displacement sensor 9 is arranged on
The method of rear end bearing bearing 20 is：Fixing angle bar 19 and 2 fixing screws 24 by stay-supported type displacement sensor per side will draw
Wire type displacement transducer 9 is fastenedly connected on rear end bearing bearing 20, and the measurement end of stay-supported type displacement sensor 9 is by displacement sensing
Device measurement end fixes angle bar 7 and clamp nut 26 is fixed on sliding block mounting platform 6, and measurement end will with stay-supported type displacement sensor 9
Connected by silk thread, the location mid-shaft of sliding block mounting platform 6 is provided with the displacement displacement sensor of stay-supported type displacement sensor 12
The fixed angle bar 7 in end, draws measurement end setting-up piece to be close to displacement displacement transducer measurement end and fixes the front-end surface of angle bar 7, fastens spiral shell
Female 26 are screwed in the opposite side for fixing angle bar 7 with nipple, and displacement sensor end is fixed on into sliding block mounting platform 6
Place, when sliding block mounting platform 6 is moved, the movement of sliding block mounting platform 6 drives the movement of sensor measurement end, now stay-supported displacement
Sensor 9 changes into the volume information of simulation wheel cylinder by calculating in its display screen output displacement information.
A kind of simulated automotive wheel cylinder deceleration loading device operation principle of cavity volume continuously adjustabe is as follows：
Refering to Fig. 1 and Fig. 2, the adjustable simulated automotive wheel cylinder load device of cavity volume be given in figure.
Variable displacement simulating brake wheel cylinder load device is braked instead of original real vehicle using variable volume hydraulic cylinder
Wheel cylinder, by controlling wheel cylinder volume size come the increase and decrease of wheel cylinder brake fluid volume in increase-decrease plan loop, so as to control brake pressure
Change.The mode of this regulation is called the regulation of variable displacement pressure.Its principle according to refer to document：Automobile ABS system
Dynamic pressure rate of change model test (is disclosed in September, 2007 the 9th phase of volume 38《Agricultural mechanical journal》, author：Li Zhi
Far, Liu Zhaodu, Cui Haifeng, Wang Renguang)：
Supercharging and dynamical equation during packing stage are respectively when in text to automobile brake：
The dynamical equation of pressurization stages during automobile brake：
The winter equation of packing stage during automobile brake：
Wherein V0It is the volume of wheel cylinder, pcIt is pressure of wheel braking cylinder, KcIt is wheel cylinder equivalent volume elastic modelling quantity, ReIt is pressurization
Equivalent liquid resistance, Re' it is equivalent liquid resistance, p in decompression processvIt is wheel cylinder inlet pressure, h1And h2It is choke valve index.Therefrom can be with
Find out, wheel cylinder volume can influence the supercharging decompression process performance of brake system of car, therefore the wheel cylinder volume by changing
Simulate each vehicle wheel cylinder load.
Specifically used process is as follows：
A kind of simulated automotive wheel cylinder load device of cavity volume continuously adjustabe of the present invention is needed before bench test
The input port of single-action hydraulic cylinder 1 is accessed the master cylinder delivery outlet of stand by brake piping, it is ensured that output pipe
Sealing, it is ensured that the brake fluid force feed of output pipe can be with the loss-free single-acting liquid for being input to simulating brake wheel cylinder load device
Cylinder pressure 1, motor part needs to access the normal work that power supply circuit ensures motor 13, stay-supported type displacement sensor 9
Equally it is also required to be powered, and ensures the hydraulic cylinder piston rod 2 of single-action piston cylinder 1 while volume position is made in odd-job, really
The registration zeroing of the fixed stay-supported type displacement sensor by initial position, by obtaining the volume information of simulated target wheel cylinder,
It is calculated as obtaining piston rod moving displacement during target simulation volume, the displacement that will be calculated is driven as displacement of targets, control
The rotating of dynamic motor 13 makes the purpose to reach simulating brake wheel cylinder volume of single-action hydraulic cylinder volume.
When a kind of simulated automotive wheel cylinder load device work of cavity volume continuously adjustabe of the present invention is initial, nonoculture
Initial position is located at hydraulic cylinder piston rod 3, i.e. the working space of single-action hydraulic cylinder 1 is zero, record stay-supported position now
The registration W of displacement sensor 91, the oil inlet of single-action hydraulic cylinder 1 is terminated into the brake piping separated from master cylinder, while
Device motor 13 is powered, and presses switching motor rotating forward, and the work of motor 13 drives angular gear decelerator 12 to rotate, tiltedly
The output shaft of gear decelerator 12 drives leading screw 8 to rotate by shaft coupling 11, and leading screw 8 is rotated and drives sliding sleeve 4, sliding sleeve installing plate
28th, sliding block mounting platform 6, sliding block 17 and hold-down support 5 are moved to device rear end simultaneously, the moving belt hydrodynamic pressure of hold-down support 5
The movement of cylinder piston rod 3, now the swept volume of single-action hydraulic cylinder 1 can become big.Press the reversal switch of motor 13, silk
Thick stick 8 is rotated backward, and sliding sleeve 4 drives sliding sleeve installing plate 28, sliding block mounting platform 6, the movement of the forward end of hold-down support 5, single-acting liquid
Pressure cylinder piston bar 3 is moved backward under the drive of hold-down support 5, and the swept volume of single-action hydraulic cylinder 1 also diminishes therewith.Press drive
The button that is stopped of dynamic motor 13, hydraulic cylinder piston rod 3 can be because the self-locking of screw mandrel 8 be fixed on current location, stay-supported position
The measurement end of displacement sensor 9 changes with the shift position of sliding block mounting platform 6, record stay-supported type displacement sensor 9 now
Registration W2, the volume information that can calculate simulating brake wheel cylinder is changed according to the registration for moving forward and backward sensor, it is specific to calculate public
Formula is as follows：
V=(W1-W2)×S
V is wheel cylinder volume, W1It is the displacement registration before the motor of stay-supported type displacement sensor works, W2It is stay-supported displacement
Displacement registration after the motor work of sensor, S is the cavity volume area of section of single-action hydraulic cylinder.
Claims (4)
1. the simulated automotive wheel cylinder deceleration loading device of a kind of cavity volume continuously adjustabe, it is characterised in that including a bottom bracket
(14), the front end of bottom bracket (14) fixedly mounts a single-action hydraulic cylinder (1) by stand type support, in bottom bracket (14)
Portion installs aluminium section bar (16) and is fixed with two lines slide rail (18) by slide rail, there is a leading screw between two lines slide rail (18)
(8), leading screw (8) is by the deep-groove ball axle inside front end bearing spider (15), rear end bearing bearing (20) and above-mentioned two bearing
(29) are held between two lines slide rail (18), interference fit is used between leading screw (8) and deep groove ball bearing (29), its
In, one end of leading screw (8) is rear end bearing seat end cap (10) through rear end bearing bearing (20), two lines slide rail (18)
On be separately installed with one can along linear slide rail (18) slide sliding block (17), two side slides (17) with sliding block mounting platform
(6) it is fixedly connected, sliding block mounting platform (6) upper surface is fixed with a hold-down support (5), the front end of hydraulic cylinder piston rod (3)
It is connected using clamp nut (26) with hold-down support (5) top, sliding sleeve (4) and sliding sleeve installing plate (28) are before sliding block (17)
End, sliding sleeve (4) is installed with the external screw thread of leading screw (8) by internal thread and coordinated, and sliding sleeve (4) is moved down in the rotation of leading screw (8)
Drive sliding sleeve installing plate (28) and slide rail mounting platform (6) mobile while dynamic, slide rail mounting platform (6) band movable slider (17) edge
Linear slide rail (18) is slided, and leading screw (8) passes through shaft coupling (11) and is fixed on bottom through one end of rear end bearing bearing (20)
The output shaft connection of one angular gear decelerator (12) of support (14) rear end, by connecting outside angular gear decelerator (12)
Connect shield (33) to be connected with motor, the internal input shaft of angular gear decelerator (12) is motor (13) output
Axle, sliding block mounting platform (6) rear end is installed with a displacement sensor end and fixes angle bar (7), rear end bearing seat end
Lid (10) top is installed with a stay-supported type displacement sensor (27), stay-supported type displacement sensor (27) and displacement transducer
It is the bracing wire of stay-supported type displacement sensor (27) between measurement end fixation angle bar (7).
2. the simulated automotive wheel cylinder load device of cavity volume continuously adjustabe according to claim 1, it is characterised in that：
Hold-down support (5) is fixedly connected with slide rail mounting platform (6) by trip bolt (24), and sliding sleeve (4) is pacified with a sliding sleeve
Dress plate (28) is connected by trip bolt (24), and sliding sleeve installing plate (28) and sliding block mounting platform (6) front end pass through trip bolt
(24) connect；
Leading screw (8) is by deep groove ball bearing (29), front end bearing spider (15), rear end bearing bearing (20) and fixing screws (24)
It is fixed on slide rail and aluminium section bar (16) center is installed, front end bearing spider (15) and rear end bearing bearing (20) is solid by fixing screws
It is scheduled on slide rail and aluminium section bar (16) rear and front end, deep groove ball bearing (29) and rear end bearing bearing (20), front end bearing spider is installed
(15) interference fit；
Linear slide rail (18) installs the orbit plane of aluminium section bar (16) both sides upper surface, linear slide rail (18) one end installed in slide rail
Front end bearing spider (15) is resisted against afterwards on surface, the other end inserts the logical of casting right angle seat (31) bottom by fastening bolt (30)
Hole is fixedly connected with the slider nut (32) inside orbit plane, and casting right angle seat (31) front-end surface is resisted against linear cunning
One end of rail (18), it is together that linear slide rail (18) is fixed with front end bearing spider (15).
3. the simulated automotive wheel cylinder load device of cavity volume continuously adjustabe according to claim 1, it is characterised in that：Institute
The angular gear decelerator (12) stated is fixed on the rear end of bottom bracket (14) by a decelerator installing plate (21), described
Decelerator installing plate (21) is a block length 190mm, and a width of 150mm, thickness is the steel plate of 5mm, (21) four angles of decelerator installing plate
Place is provided with the screwed hole of a diameter of 6mm, and decelerator installing plate (21) middle setting has four through holes of a diameter of 5mm, and oblique
The base bottom mounting hole of gear decelerator (12) is corresponding, and decelerator installing plate (21) is parallel to bottom of device support
(14), decelerator installing plate (21) is by trip bolt (24) through the screwed hole at four angles and slider nut (32) and bottom
Support (14) is fixedly connected.
4. the simulated automotive wheel cylinder load device of cavity volume continuously adjustabe according to claim 1, it is characterised in that：Silk
The input of thick stick (8) and the output end of angular gear decelerator (12) are connected using shaft coupling (11), what shaft coupling (11) was used
It is plum coupling, shaft coupling (11) is constituted by by two shaft coupling dogs and a flexible member, two elastic dogs are in dog
Direction is mutually twisted, and radial direction interocclusal clearance position is filled by plum blossom flexible member, leading screw (8) one end and shaft coupling dog and leading screw
(8) input is fixedly connected using flat key, the dog and angular gear decelerator (12) of angular gear decelerator (12) one end
Output shaft is equally fixedly connected using flat key.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710043573.6A CN106769102B (en) | 2017-01-19 | 2017-01-19 | Device capable of continuously adjusting capacity and simulating load of automobile brake wheel cylinder |
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| CN201710043573.6A CN106769102B (en) | 2017-01-19 | 2017-01-19 | Device capable of continuously adjusting capacity and simulating load of automobile brake wheel cylinder |
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| CN106769102B CN106769102B (en) | 2023-04-07 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107560876A (en) * | 2017-10-26 | 2018-01-09 | 苏州联正测试技术服务有限公司 | A kind of detection means and its detection method of automobile expander |
| CN109540570A (en) * | 2019-01-08 | 2019-03-29 | 北京市城市管理研究院（北京市环境卫生监测中心） | The cleaning sampling platform system of sweep machine sweep performance test stand |
| CN109724798A (en) * | 2017-10-31 | 2019-05-07 | 北京精密机电控制设备研究所 | A kind of loading device based on crank block configuration |
| CN110220681A (en) * | 2019-05-29 | 2019-09-10 | 嘉兴盛鼎机械有限公司 | Double diaphragm disc spring arrester parking releasing mechanism fatigue test methods |
| CN113623292A (en) * | 2021-08-16 | 2021-11-09 | 兖矿东华重工有限公司 | Full-stroke sealing performance test bed for hydraulic cylinder |
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| CN110220681A (en) * | 2019-05-29 | 2019-09-10 | 嘉兴盛鼎机械有限公司 | Double diaphragm disc spring arrester parking releasing mechanism fatigue test methods |
| CN113623292A (en) * | 2021-08-16 | 2021-11-09 | 兖矿东华重工有限公司 | Full-stroke sealing performance test bed for hydraulic cylinder |
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