CN106840698A - Axle load analog control device and method based on brake platform lift height and axletree loading force correlation model - Google Patents
Axle load analog control device and method based on brake platform lift height and axletree loading force correlation model Download PDFInfo
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- CN106840698A CN106840698A CN201710059471.3A CN201710059471A CN106840698A CN 106840698 A CN106840698 A CN 106840698A CN 201710059471 A CN201710059471 A CN 201710059471A CN 106840698 A CN106840698 A CN 106840698A
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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
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- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
Axle load analog control device and method of the present invention based on brake platform lift height with axletree loading force correlation model, drum braking platform include the locked system of electric-controlled type machine automatization (A), guider (B), brake platform lift height monitoring device (C), drum-type brake platform lowering or hoisting gear (D), data acquisition processing system and control system.According to the incidence relation between brake platform lift height x and axletree loading force F, i.e. x F correlation models, control braking stage body lifting, so as to being loaded in the simulation of measuring car axle, can accurately automatically control loading axle load；Realize that brake platform is rigidly connected with lifting stand by the locked system of electric-controlled type machine automatization, eliminate air bag plastic deformation influence factor, realize the purpose of the accurate detection vehicle braking performances on loading brake tester.The achievable multiple-axle vehicle braking ability of the present invention is quick and precisely detected.The device can be widely applied to automotive check, experiment and scientific research institution.
Description
Technical field
The present invention is the axle load analog control device and method of brake platform lift height and axletree loading force correlation model, root
According to national regulations, braking stage body is to that when measuring car axle is loaded, can obtain between brake platform lift height x and loading force F
Incidence relation, can accurately automatically control loading axle load, by the locked system balance error of electric-controlled type machine automatization, reach vehicle and exist
The effect of accurate detection vehicle braking performances on air bag lifting type loading brake tester.So as to detect vehicle braking exactly
Can, belong to automobile brake perfrmance detection technique field.
Background technology
Existing automobile brake perfrmance detection, axletree reaches drum braking platform and carries out braking inspection after being weighed on the counterweight table of ground
Survey.By GB GB7258-2012《Motor vehicle safe and technical specification》Inspection required braking force, front axle braking force and front axle load
Percentage requirement be more than or equal to 60%, and definition：Axle before motor vehicle (bicycle) longitudinal centre line center is preceding
Axle, other axles are rear axle；All axletrees of trailer press rear axle calculating；So, double steering shaft is all front axle, and braking ratio per axle will
Ask more than or equal to 60%, the braking ratio per axle of all axletrees of trailer is required more than or equal to 50%, the requirement of vehicle braking ratio is more than etc.
In 60%.However, experiment shows：Can be by the first steering spindle and the 3rd shaft portion during the second steering shaft detection of double steering shaft vehicle
It is built on stilts, greatly reduce adhesion weight, it is difficult to meet the detection requirement of the braking ratio of front axle 60%.
Trailer is pulled under detection state in tractor, equally by axle portion before the second axle and tractor during three shaft detection of trailer
Divide built on stilts, be not only difficult to reach the detection requirement of 50% braking ratio per axle, it is also difficult to reach the detection requirement of 60% vehicle braking ratio.
Even if vehicle braking ability very well, adhesion weight reduce make detection maximum braking force reduce, with ground counterweight table on weigh
The ratio between braking ratio per axle reduce and be difficult to up to standard, cause false retrieval to misjudge.
The content of the invention
The present invention provides a kind of axle load simulation control dress based on brake platform lift height and axletree loading force correlation model
Put and method.Main purpose is braking stage body to when measuring car axle is loaded, automatic accurate regulation passes through in measuring car axle wheel weight
The locked system balance error of electric-controlled type machine automatization, braking stage body with lift stand be changed into from flexible connection be rigidly connected, surely
It is qualitative to increase substantially.Reach the effect of vehicle accurate detection vehicle braking performances on air bag lifting type loading brake tester
Really.The challenge of brake tester certainty of measurement is loaded for how to improve air bag lifting type, it is proposed that to electric-controlled type machinery
Locking mechanism, guider, brake platform position monitoring device, the mechanical structure of roller brake tester lifting device, circuit
The brand-new design of the aspects such as control.
Above-mentioned purpose of the invention is achieved through the following technical solutions, and is described with reference to the drawings as follows：
A kind of axle load analog control device based on brake platform lift height Yu axletree loading force correlation model, by electric-controlled type
The locked system A of machine automatization, guider B, brake platform position monitoring device C, brake platform lowering or hoisting gear D, data acquisition process
System and control system are constituted, and the locked system A of electric-controlled type machine automatization, guider B and brake platform lowering or hoisting gear D distinguish
It is arranged on 4 angles of roller brake tester 18, the brake platform position monitoring device C is arranged in 1 of control device
On angle；
The locked system A of electric-controlled type machine automatization is that multiple structures are identical, is arranged in 18 liang of roller brake tester
At the U-frame frame 22 at end, for locked to the lift height of U-frame frame 22 in brake platform lowering or hoisting gear D, and by brake platform position
Put monitoring device C detection brake platform lift locations；
The guider B is arranged in the two ends of roller brake tester 18, by guided way core 29 and guide rail 30
Composition, is slidably matched using V-arrangement, and centre is provided with spreader groove；
The brake platform position monitoring device C is arranged on a jiao of roller brake tester 18, the brake platform position
The lower end of monitoring device C is fixed on air bag fixed frame 26, and its upper end is fixed on U-frame frame 22, the brake platform position
The telescopic direction of the displacement transducer 44 in monitoring device C is consistent with the rise and fall direction of roller brake tester 18；
The brake platform lowering or hoisting gear D is mainly made up of U-frame frame 22 and air bag 24；
The data acquisition processing system is used to gather axle weight and braking force signal, including signal amplification module 5, analog quantity
Terminal plate 7, analog acquisition card 13 and industrial computer 14；
The control system includes digital output card 2, magnetic valve 3 and electromagnet 1.
The locked system A of electric-controlled type machine automatization totally 8, has 4 groups, every 2 groups of lockings, one U-frame frame by 2 one group
22。
The locked system A of electric-controlled type machine automatization is filled by the tooth bar 21 on U-frame frame 22 and installed in locking
The ratchet 20 on support frame 25, steel sheet spring 19 are put, is loosened the arm of force 23, electromagnet 1 and is constituted, the ratchet 20 is rotated by ratchet
Axle 34 with loosen the concentric cooperation of the arm of force 23, be provided with spacing hole 36 on the locking device support frame 25 at ratchet rotary shaft 34,
Be arranged in spacing hole 36 with the key 35 of the interference fit of ratchet rotary shaft 34, the ratchet 20 by the active force of steel sheet spring 19 with
Tooth bar 21 is combined, and is powered by electromagnet 1 and is separated with tooth bar 21 with the adhesive for loosening the arm of force 23；
The side of locking device support frame 25 longitudinally couples channel-section steel 38 and consolidates by support frame stabilization channel-section steel 27 and support frame
Fixed to be connected, the rear side of locking device support frame 25 is fixedly linked with support frame reinforcement 41, and support frame reinforcement 41 is indulged with support frame
It is fixedly linked to connection channel-section steel 38.
The guider B is made up of guided way core 29 and guide rail 30, and the guided way core 29 is fixed on U-frame frame
22 both sides, the guide rail 30 is bolted to the upper end of air bag fixed frame 26 by guide rail elongated hole bearing 49, is oriented to
Installation elongated hole 51 on track elongated hole bearing 49 is used for adjusting the installation site of guide rail elongated hole bearing 49；Guider B has 4
It is individual, overlapped with the longitudinal centre line of air bag 24 per two longitudinal centre lines of guider B of longitudinal direction.
The brake platform position monitoring device C is by displacement transducer 44, displacement transducer fixed plate 45, displacement transducer
End plate 46 and displacement transducer fixed mount 47 are constituted, and institute displacement sensors fixed mount 47 is arranged on displacement transducer 44, position
Displacement sensor fixed mount 47 is by the way that in screw-nut fix in position displacement sensor fixed plate 45, displacement transducer fixed plate 45 is fixed
On air bag fixed frame 26, displacement transducer upper head plate 46 is fixedly linked with U-frame frame 22, institute's displacement sensors fixed plate
45 both sides are provided with multiple mounting holes, the installation site for adjusting displacement transducer 44.
The brake platform lowering or hoisting gear D is by U-frame frame 22, air bag 24, air bag fixed frame 26, weighing sensor 28, gas
Capsule lifting axis 31, air bag bottom terminal pad 32, air bag top terminal pad 37, support frame longitudinally couple channel-section steel 38, side channel-section steel 39, erect
Channel-section steel 40 is constituted,
The two ends of U-frame frame 22 are connected by weighing sensor 28 and air bag lifting axis 31 with air bag 24, the air bag
24 are fixed to the inside of air bag fixed frame 26,22 liang of U-frame frame by air bag top terminal pad 37 and air bag bottom terminal pad 32
By support frame, longitudinally connection channel-section steel 38 is connected the air bag fixed frame 26 at end, and two air bags of the same side of U-frame frame 22 are consolidated
Determine framework 26 to be connected by side channel-section steel 39, the air bag 24 drives drum-type system by U-frame frame 22 and weighing sensor 28
Dynamic platform 18 rises.
The data acquisition processing system includes signal amplification module 5, analog quantity terminal plate 7, the and of analog acquisition card 13
Weighing sensor 28, the phase of braking force sensor 9 on industrial computer 14, the signal amplification module 5 and brake platform lowering or hoisting gear D
Even, analog quantity terminal plate 7 is connected by winding displacement with signal amplification module 5 and analog acquisition card 13, and installed in industrial computer
In 14ISA slots, industrial computer 14, analog quantity terminal plate 7 and signal amplification module 5 are placed in switch board 43.
The control system includes digital output card 2, magnetic valve 3 and electromagnet 1, and the digital output card 2 is installed
In industrial computer 14ISA slots, and it is connected with magnetic valve 3 and electromagnet 1, the magnetic valve 3 and electromagnet 1 are lifted with brake platform
Device D is connected.
Brake platform lift height is based on using above-mentioned control device and simulates control with the axle load of axletree loading force correlation model
Method processed, it is characterised in that：Including step in detail below：
Equipment zeroing in step 1, data acquisition processing system, collection axle weight and braking force signal
Before vehicle enters detection place, the electromagnet 1 of the locked system A of electric-controlled type machine automatization is not powered, ratchet 20
The nethermost teeth groove of tooth bar 21 is locked at, now brake platform lowering or hoisting gear 2, drum-type can be braked and tried by data acquisition processing system
Test the axle weight of platform 18, brake force unification and be set to zero, the lifting height initial value of brake platform position monitoring device C is set to zero, when
After vehicle enters detection place, the prompting vehicle of dot matrix screen 12 sails roller brake tester 18 into measuring car axle, when detection axletree
During in roller brake tester 18, now industrial computer 14 will receive the proximity switch detection of roller brake tester 18
The signal in place of roller brake tester 18 is reached to Vehicle Axles.
The highly automated regulation of step 2, detection wheel on roller brake tester
After multiple-axle vehicle enters roller brake tester 18, industrial computer 14 has detected vehicle in place, industrial computer
14 realize that brake platform lowering or hoisting gear D air bags 24 are inflated by magnetic valve 3, and the height of roller brake tester 18 rises, herein mistake
The ratchet 20 of Cheng Zhong, the locked system A of electric-controlled type machine automatization sticks into tooth bar 21, brake platform position monitoring device C and weighing and sensing
The loading axis weight that device 28 samples the constantly lifting height of recording drum formula brake tester 18 and weighing sensor 28, until rolling
The actual lifting height of cartridge type brake tester 18 reaches limit value or air bag 24 stops when the measured value of weighing sensor 28 reaches limit value
Only inflate；Now, control system can obtain actual x-F correlation models, and according to the model, system is obtained according to Standard
The deformation quantity of accurate displacement transducer 44, that is, load lift height.After vehicle-state stabilization, air bag starts to deflate, brake platform
Body highly drops to object height, and the locked system A of electric-controlled type machine automatization is automatically locked braking stage body, brakes stage body and lift master
The annexation of frame is changed into being rigidly connected from being flexibly connected.
Step 3, vehicle measure the detection of axle braking force
After the completion of the highly automated regulation of roller brake tester 18, point out to drive by the display information of dot matrix screen 12
Member's brake, now sampled data is sent to data acquisition processing system by the braking force sensor of roller brake tester 18, meter
Calculate brake force F now；After vehicle is totally stationary, aobvious 12 display screen of dot matrix will show vehicle braking force, industrial computer 14 it is aobvious
Show that axle weight occurs in device interface and braking force signal changes over time the curve of relation.After data acquisition terminates, electromagnet 1 leads to
Electricity, loosens the arm of force 23 under the effect of electromagnet 1 along rotate counterclockwise certain angle, you can unclamp the locking to the 21 of tooth bar, so
Rear gasbag 24 is deflated, and the height of roller brake tester 23 drops to initial height, and detected vehicle rolls brake platform away from.
The axle load analog control device and method of brake platform lift height and axletree loading force correlation model are accurate with energy
It is control roller brake tester lifting height, simple, convenient, fast to the transformation of existing drum braking platform, substantially increase
The advantages of multiple-axle vehicle braking performance test accuracy.
Compared with prior art the beneficial effects of the invention are as follows：
1st, in vehicle wheel weight automatic regulating apparatus of the present invention, design and use the locked system of electric-controlled type machine automatization
System, is not only able to prevent in brake platform uphill process the generation of fortuitous event that reason causes such as be burst because of air bag, tracheae, heavier
Want be can accurate resting barrel formula brake tester position, so as to improve the measuring accuracy of drum-type brake test bench.
2nd, in vehicle wheel weight automatic regulating apparatus of the present invention, new guide rail device, device tool are employed
There is the characteristics of frictional resistance is small, the impact of resistance to vertical direction is strong, not only increase the directional stability in brake platform uphill process, more
Improve the measuring accuracy of drum-type brake test bench.
3rd, in vehicle wheel weight automatic regulating apparatus of the present invention, brake platform position monitoring device is employed, constantly instead
Feedback drum-type brake platform lifting height, so as to realize the accurate control of drum-type brake platform lifting height, so as to improve drum-type
The measuring accuracy of brake test bench.
4th, in vehicle wheel weight automatic regulating apparatus of the present invention, using air bag as power set, by U-frame frame
Drive brake platform rises, and air bag has the advantages that to respond fast, control simplicity, so as to improve drum-type brake test bench
Operating efficiency.
5th, in vehicle wheel weight automatic regulating apparatus of the present invention, four weighing sensors U-shaped has been individually positioned in
The both sides of framework, do not have difference in height by weighing sensor and U-frame frame in same level, sufficiently make use of U-frame frame
Torque is produced to weighing sensor, test accuracy of the weighing sensor in detection can be directly improved, so as to improve drum-type
The measuring accuracy of brake test bench.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings：
Fig. 1 is Automobile Braking Force Detecting flow chart of the present invention；
Fig. 2 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
The overall axle surveys view of device and method；
Fig. 3 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
The overall top view of device and method；
Fig. 4 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
The front view of device and method lifting device；
Fig. 5 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
The left view of device and method lifting device；
Fig. 6 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
The top view of the lifting device of device and method；
Fig. 7 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
One group of left view of the locked system of electric-controlled type machine automatization of device and method；
Fig. 8 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
The left view of the locked system of electric-controlled type machine automatization of device and method；
Fig. 9 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
The front view of the locked system of electric-controlled type machine automatization of device and method；
Figure 10 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
The top view of the locked system of electric-controlled type machine automatization of device and method processed；
Figure 11 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
The partial rear view of the locked system of electric-controlled type machine automatization of device and method processed；
Figure 12 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
The front view of the guider of device and method processed；
Figure 13 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
The left view of the guider device of device and method processed；
Figure 14 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
The top view of the guider device of device and method processed；
Figure 15 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
Device and method brake platform position monitoring device processed installs front view；
Figure 16 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
Device and method brake platform position monitoring device processed installs left view；
Figure 17 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
Device and method brake platform position monitoring device front view processed；
Figure 18 is that the axle load based on brake platform lift height and axletree loading force correlation model of the present invention simulates control
Device and method brake platform position monitoring device left view processed；
In figure：A. the locked system of electric-controlled type machine automatization, B. guiders, C. brake platform position monitoring devices, D. brakings
Platform lowering or hoisting gear, 1. electromagnet, 2. digital output card, 3. magnetic valve, 4. brake tester lift height displacement, 5. signal put
Big module, 6. weighing sensor loading axle load, 7. analog quantity terminal plate, 9. braking force sensor, 12. dot matrix display screens, 13. moulds
Analog quantity capture card, 14. industrial computers, 18. roller brake testers, 19. steel sheet springs, 20. ratchets, 21. tooth bars, 22.U shape frames
Frame, 23. loosen the arm of force, and 24. air bags, 25. locking device support frames, 26. air bag fixed frames, 27. support frames stablize channel-section steel,
28. weighing sensors, 29. guided way cores, 30. guide rails, 31. air bag lifting axis, 32. air bag bottom terminal pads, 33. are oriented to
Track elongated hole bearing, 34. ratchet rotary shafts, 35. keys, 36. spacing holes, 37. air bags top terminal pad, 38. support frames longitudinally join
Access slot steel, 39. side channel-section steels, 40. vertical slot steel, 41. support frame reinforcements, 43. industrial computer racks, 44. displacement transducers, 45.
Displacement sensor fixed plate, 46. displacement transducer upper head plates, 47. displacement transducer fixed mounts, 48. displacement transducer mounting holes,
49. guide rail elongated hole bearings, 50. track fixing bolts, 51. install elongated hole, 53. displacement transducer connecting plates
Specific embodiment
It is shown below in conjunction with the accompanying drawings to further describe specific device embodiments of the invention.
The invention provides a kind of brake platform lift height and the axle load analog control device of axletree loading force correlation model
And method, it is possible to increase the accuracy of vehicle braking performances detection.Including the locked system A of electric-controlled type machine automatization, guider
B, brake platform position monitoring device C, brake platform lowering or hoisting gear D, data acquisition processing system and control system.
The locked system A of electric-controlled type machine automatization includes electromagnet 1, steel sheet spring 19, ratchet 20, tooth bar 21, loosens
The arm of force 23, locking device support frame 25, support frame stabilization channel-section steel 27, ratchet rotary shaft 34, key 35, spacing hole 36, support frame add
Strong muscle 41, reinforcement fixed cross beam 42.Refering to Fig. 7,8,9,10,11, ratchet 20 passes through ratchet rotary shaft 34 with the arm of force 23 is loosened
The assembly of concentric cooperation, key 35 and ratchet rotary shaft 34 is arranged in spacing hole 36, and electromagnet 1 and steel sheet spring 19 are distinguished
The side that different angles are fixed on locking device support frame 25 is formed with the arm of force 23 is loosened, the left and right side of support frame 25 is by support
Longitudinally connection channel-section steel 38 is connected frame stabilization channel-section steel 27 with support frame, and the rear side of support frame 25 is weldingly connected with support frame reinforcement 41,
Support frame reinforcement 41 is connected by welding with reinforcement fixed cross beam 42.
The locked system A of electric-controlled type machine automatization totally 8, has 4 groups, every 2 groups of electric-controlled type machine automatizations by 2 one group
Locked system A can be with one U-frame frame 22 of locking.In order to increase the intensity of locking device support frame 25, electric-controlled type machine automatization
Locked system A has 2 support frame stabilization channel-section steels 37, in order to increase the stability of locking device support frame 25, electric-controlled type machinery
The longitudinally mounted support frame reinforcements 41 of the system that is automatically locked A.The working range of ratchet 20 is by key 35 and ratchet rotary shaft 34
Assembly is limited by spacing hole 36, rack tooth away from being 5mm, when not raising brake platform, the tooth of ratchet 20 and the bottommost of tooth bar 21
Groove coordinates, and it is zero that brake platform position monitoring device C sets lifting height initial value；In brake platform uphill process, tooth bar 21 follows U
Shape framework is moved vertically about 22, and ratchet 20 is constantly pinned tooth bar in the uphill process of tooth bar 21 by the effect of steel sheet spring 19
21, therefore brake platform can be accurately fixed in different height.After detection terminates, electromagnet 1 is powered, and attraction is produced to loosening the arm of force 23
Effect, loosens the arm of force 23 with pawl 20 to rotate counterclockwise certain angle, unclamps the locking to the 21 of tooth bar, and air bag 24 is put
Gas, roller brake tester 18 falls after rise.
The guider B includes guided way core 29, guide rail 30, guide rail elongated hole bearing 49, and track fixes spiral shell
Bolt 50, installation elongated hole 51.Refering to Figure 12,13,14, guided way core 29 is welded to connect with the two sides of U-frame frame 22, guide rail 30
It is welded to connect with guide rail elongated hole bearing 49, guide rail elongated hole bearing 49 is fixed on air bag fixed frame by fixing bolt 50
Above frame 26, elongated hole 51 is installed and is used for adjusting the installation site of guide rail elongated hole bearing 49.Guider B has 4, by being oriented to
Rail core 29 and guide rail 30 are constituted, and using triangle track relation, centre is provided with spreader groove；Per two guiders of longitudinal direction
The longitudinal centre line of the longitudinal centre line of B and U-frame frame 22 overlaps, two longitudinal centre lines of guider B per longitudinal direction and
The longitudinal centre line of air bag 24 overlaps.
The brake platform position monitoring device C includes displacement transducer 44, displacement transducer fixed plate 45, displacement transducer
Upper head plate 46, displacement transducer fixed mount 47, displacement transducer mounting hole 48.Refering to Figure 15,16,17,18, displacement transducer is solid
Frame 47 is determined on displacement transducer 44, and displacement transducer fixed mount 47 is fixed by screw-nut fix in position displacement sensor
Plate 45, displacement transducer fixed plate 45 is connected by welding with air bag fixed frame 26, and displacement transducer upper head plate 46 is by weldering
Connect and be connected with U-frame frame 22.Brake platform position monitoring device C totally one, displacement transducer 44 in brake platform position monitoring device C
Telescopic direction it is consistent with the rise and fall direction of brake platform, upper head plate 46 follows U-shaped framework to move up and down, brake platform position prison
Accurate feedback brake platform high variable quantity by device C is surveyed, so as to realize the accurate control of roller brake tester height.Position
The both sides of displacement sensor fixed plate 45 are provided with 12 mounting holes, are conveniently adjusted the installation site of displacement transducer 44.
The brake platform lowering or hoisting gear D include U-frame frame 22, air bag 24, air bag fixed frame 26, weighing sensor 28,
Air bag lifting axis 31, air bag bottom terminal pad 32, air bag top terminal pad 37, support frame longitudinally connection channel-section steel 38, side channel-section steel 39,
Vertical slot steel 40.Refering to Fig. 2,3,4,5,6, the tooth bar of the both sides front/rear end of U-frame frame 22 and the locked system A of electric-controlled type machine automatization
21 are connected, and the two sides of U-frame frame 22 are connected by welding with guided way core 31 respectively, and guide rail 30 passes through guide rail elongated hole
Bearing 33 is connected with air bag fixed frame 26, and the two ends of U-frame frame 22 are connected to by weighing sensor 28 with air bag lifting axis 31
Air bag, air bag 24 is fixed to air bag fixed frame 26, brake platform by air bag top terminal pad 37 and air bag bottom terminal pad 32
By support frame, longitudinally connection channel-section steel 38 is connected two air bag fixed frames 26 of the lifting device per longitudinal direction, brake platform lifting dress
Every two horizontal air bag fixed frames 26 are put to be connected by side channel-section steel 39.Totally 4, air bag 24, is individually positioned in brake platform liter
On 4 angles of falling unit 2, in order to keep air bag steady operation, 4 air bags 24 are respectively by air bag top terminal pad 37 and air bag
Bottom terminal pad 32 is fixed to the inside of air bag fixed frame 26, and air bag upper end passes through air bag lifting axis 31 and the phase of weighing sensor 28
Connection.Air bag 24 drives brake platform 18 to rise by U-frame frame 22 and weighing sensor 28.Weighing sensor 28 totally 4, each
Maximum is weighed 5000kg.
Data acquisition processing system includes signal amplification module 5, analog quantity terminal plate 7, analog acquisition card 13 and industry control
Machine 14.Refering to Fig. 1, signal amplification module 5 is connected with the weighing sensor on brake platform lowering or hoisting gear D, braking force sensor, mould
Analog quantity terminal plate 7 and signal amplification module 5, analog acquisition card 13 is connected by winding displacement with analog quantity terminal plate 7, and is installed
In industrial computer 14ISA slots, industrial computer 14, analog quantity terminal plate 7 and signal amplification module 5 are placed in switch board 43.
Control system includes digital output card 2, magnetic valve 3 and electromagnet 1.Refering to Fig. 1, digital output card 2 is installed
In industrial computer 14ISA slots, and it is connected with magnetic valve 3 and electromagnet 1, magnetic valve 3, electromagnet 1 and brake platform lowering or hoisting gear D
It is connected.
A kind of axle load analog control method of brake platform lift height and axletree loading force correlation model, including in detail below
Step：
Equipment zeroing in step 1, data acquisition processing system, collection axle weight and braking force signal
Before vehicle enters detection place, the electromagnet 1 of the locked system A of electric-controlled type machine automatization is not powered, ratchet 20
The nethermost teeth groove of tooth bar 21 is locked at, now brake platform lowering or hoisting gear 2, drum-type can be braked and tried by data acquisition processing system
Test the axle weight of platform 18, brake force unification and be set to zero, the lifting height initial value of brake platform position monitoring device C is set to zero, when
After vehicle enters detection place, the prompting vehicle of dot matrix screen 12 sails roller brake tester 18 into measuring car axle, when detection axletree
During in roller brake tester 18, now industrial computer 14 will receive the proximity switch detection of roller brake tester 18
The signal in place of roller brake tester 18 is reached to Vehicle Axles.
The highly automated regulation of step 2, detection wheel on roller brake tester
After multiple-axle vehicle enters roller brake tester 18, industrial computer 14 has detected vehicle in place, industrial computer
14 realize that brake platform lowering or hoisting gear D air bags 24 are inflated by magnetic valve 3, and the height of roller brake tester 18 rises, herein mistake
The ratchet 20 of Cheng Zhong, the locked system A of electric-controlled type machine automatization sticks into tooth bar 21, brake platform position monitoring device C and weighing and sensing
The loading axis weight that device 28 samples the constantly lifting height of recording drum formula brake tester 18 and weighing sensor 28, control system
System will obtain actual x-F correlation models, until the actual lifting height of roller brake tester 18 reaches limit value or weighs
Air bag 24 stops inflation when the measured value of sensor 28 reaches limit value；Now, control system can obtain actual x-F correlation models,
According to the model, system obtains the deformation quantity of accurate displacement transducer 44, that is, loads lift height according to Standard.Car
After in stable condition, air bag starts to deflate, and braking stage body highly drops to object height, the locked system A of electric-controlled type machine automatization
Be automatically locked braking stage body, and braking stage body is changed into being rigidly connected with the annexation of lifting stand from being flexibly connected.
Step 3, vehicle measure the detection of axle braking force
After the completion of the highly automated regulation of roller brake tester 18, point out to drive by the display information of dot matrix screen 12
Member's brake, now sampled data is sent to data acquisition processing system by the braking force sensor of roller brake tester 18, meter
Calculate brake force F now；After vehicle is totally stationary, aobvious 12 display screen of dot matrix will show vehicle braking force, industrial computer 14 it is aobvious
Show that axle weight occurs in device interface and braking force signal changes over time the curve of relation.After data acquisition terminates, electromagnet 1 leads to
Electricity, loosens the arm of force 23 under the effect of electromagnet 1 along rotate counterclockwise certain angle, you can unclamp the locking to the 21 of tooth bar, so
Rear gasbag 24 is deflated, and the height of roller brake tester 23 drops to initial height, and detected vehicle rolls brake platform away from.
The axle load analog control device and method of brake platform lift height and axletree loading force correlation model are accurate with energy
It is control roller brake tester lifting height, simple, convenient, fast to the transformation of existing drum braking platform, substantially increase
The advantages of multiple-axle vehicle braking performance test accuracy.
Claims (9)
1. the axle load analog control device based on brake platform lift height with axletree loading force correlation model, mechanical certainly by electric-controlled type
Move locked system (A), guider (B), brake platform position monitoring device (C), brake platform lowering or hoisting gear (D), at data acquisition
Reason system and control system are constituted, it is characterised in that：
The locked system of electric-controlled type machine automatization (A), guider (B) and brake platform lowering or hoisting gear (D) are arranged in rolling
On 4 angles of cartridge type brake tester (18), the brake platform position monitoring device (C) is arranged on 1 angle of control device；
The locked system of electric-controlled type machine automatization (A) is that multiple structures are identical, is arranged in roller brake tester (18) two
U-frame frame (22) place at end, for locked to U-frame frame (22) lift height in brake platform lowering or hoisting gear (D), and by system
Dynamic platform position monitoring device (C) detection brake platform lift location；
The guider (B) is arranged in the two ends of roller brake tester (18), by guided way core (29) and guide rail
(30) constitute, be slidably matched using V-arrangement, centre is provided with spreader groove；
The brake platform position monitoring device (C) is arranged on a jiao of roller brake tester (18), the brake platform position
The lower end of monitoring device (C) is fixed on air bag fixed frame (26), and its upper end is fixed on U-frame frame (22), the braking
The telescopic direction of the displacement transducer (44) in platform position monitoring device (C) and the rise and fall of roller brake tester (18)
Direction is consistent；
The brake platform lowering or hoisting gear (D) is mainly made up of U-frame frame (22) and air bag (24)；
The data acquisition processing system is used to gather axle weight and braking force signal, including signal amplification module (5), analog quantity connect
Line plate (7), analog acquisition card (13) and industrial computer (14)；
The control system includes digital output card (2), magnetic valve (3) and electromagnet (1).
2. the axle load based on brake platform lift height and axletree loading force correlation model according to claim 1 simulates control
Device, it is characterised in that：
The locked system of electric-controlled type machine automatization (A) totally 8, has 4 groups, every 2 groups of lockings, one U-frame frame by 2 one group
(22)。
3. the axle load based on brake platform lift height and axletree loading force correlation model according to claim 1 simulates control
Device, it is characterised in that：
The locked system of electric-controlled type machine automatization (A) is by the tooth bar (21) on U-frame frame (22) and installed in locking
Ratchet (20), steel sheet spring (19) on device support stand (25), loosen the arm of force (23), electromagnet (1) composition, the ratchet
(20) by ratchet rotary shaft (34) with loosen the arm of force (23) concentric cooperation, in the locking device branch at ratchet rotary shaft (34) place
Support (25) is provided with spacing hole (36), with the key (35) of ratchet rotary shaft (34) interference fit in spacing hole (36),
The ratchet (20) is combined by steel sheet spring (19) active force and tooth bar (21), is powered by electromagnet (1) and is loosened the arm of force
(23) adhesive is separated with tooth bar (21)；
Locking device support frame (25) side longitudinally couples channel-section steel (38) by support frame stabilization channel-section steel (27) with support frame
Be fixedly linked, locking device support frame (25) rear side be fixedly linked with support frame reinforcement (41), support frame reinforcement (41) and
Longitudinally connection channel-section steel (38) is fixedly linked support frame.
4. the axle load based on brake platform lift height and axletree loading force correlation model according to claim 1 simulates control
Device, it is characterised in that：
The guider (B) is made up of guided way core (29) and guide rail (30), and the guided way core (29) is fixed on U-shaped
Framework (22) both sides, the guide rail (30) is bolted to air bag fixed frame by guide rail elongated hole bearing (49)
(26) upper end, the installation elongated hole (51) on guide rail elongated hole bearing (49) is installed for adjusting guide rail elongated hole bearing (49)
Position；Guider (B) has 4, per in two longitudinal centre lines of guider (B) of longitudinal direction and the longitudinal direction of air bag (24)
Heart line overlaps.
5. the axle load based on brake platform lift height and axletree loading force correlation model according to claim 1 simulates control
Device, it is characterised in that：
The brake platform position monitoring device (C) is by displacement transducer (44), displacement transducer fixed plate (45), displacement transducer
Upper head plate (46) and displacement transducer fixed mount (47) are constituted, and institute's displacement sensors fixed mount (47) is installed in displacement transducer
(44) on, displacement transducer fixed mount (47) by screw-nut fix in position displacement sensor fixed plate (45), displacement sensing
Device fixed plate (45) is fixed on air bag fixed frame (26), displacement transducer upper head plate (46) and U-frame frame (22) fixing phase
Even, institute displacement sensors fixed plate (45) both sides are provided with multiple mounting holes, the installation position for adjusting displacement transducer (44)
Put.
6. the axle load based on brake platform lift height and axletree loading force correlation model according to claim 1 simulates control
Device, it is characterised in that：
The brake platform lowering or hoisting gear (D) is by U-frame frame (22), air bag (24), air bag fixed frame (26), weighing sensor
(28), air bag lifting axis (31), air bag bottom terminal pad (32), air bag top terminal pad (37), support frame longitudinally couple channel-section steel
(38), side channel-section steel (39), vertical slot steel (40) composition,
U-frame frame (22) two ends are connected by weighing sensor (28) and air bag lifting axis (31) with air bag (24), described
Air bag (24) is fixed to air bag fixed frame (26) the inside by air bag top terminal pad (37) and air bag bottom terminal pad (32),
By support frame, longitudinally connection channel-section steel (38) is connected the air bag fixed frame (26) at U-frame frame (22) two ends, two U-frame framves
(22) the air bag fixed frame (26) of the same side is connected by side channel-section steel (39), and the air bag (24) is by U-frame frame (22)
Drum-type brake platform (18) is driven to rise with weighing sensor (28).
7. the axle load based on brake platform lift height and axletree loading force correlation model according to claim 1 simulates control
Device, it is characterised in that：
The data acquisition processing system includes signal amplification module (5), analog quantity terminal plate (7), analog acquisition card (13)
With industrial computer (14), weighing sensor (28), brake force on the signal amplification module (5) and brake platform lowering or hoisting gear (D)
Sensor (9) is connected, and analog quantity terminal plate (7) is connected by winding displacement with signal amplification module (5) and analog acquisition card (13),
And in industrial computer (14) ISA slots, industrial computer (14), analog quantity terminal plate (7) and signal amplification module (5) are placed on
In switch board (43).
8. the axle load based on brake platform lift height and axletree loading force correlation model according to claim 1 simulates control
Device, it is characterised in that：
The control system includes digital output card (2), magnetic valve (3) and electromagnet (1), the digital output card (2)
In industrial computer (14) ISA slots, and it is connected with magnetic valve (3) and electromagnet (1), the magnetic valve (3) and electromagnet
(1) it is connected with brake platform lowering or hoisting gear (D).
9. the axle load of brake platform lift height and axletree loading force correlation model is based on using the control device described in claim 1
Analog control method, it is characterised in that：Including step in detail below：
Equipment zeroing in step 1, data acquisition processing system, collection axle weight and braking force signal
Before vehicle enters detection place, the electromagnet (1) of the locked system of electric-controlled type machine automatization (A) is without energization, ratchet
(20) tooth bar (21) nethermost teeth groove is locked at, now data acquisition processing system can be by brake platform lowering or hoisting gear (2), roller
The axle weight of formula brake tester (18), brake force unification are set to zero, and the lifting height of brake platform position monitoring device (C) is initial
Value is set to zero, and after vehicle enters detection place, dot matrix screen (12) prompting vehicle sails roller brake tester into measuring car axle
(18), when detecting that axletree is in roller brake tester (18), now industrial computer (14) will receive drum-type braking examination
The proximity switch for testing platform (18) detects the signal in place that Vehicle Axles reach roller brake tester (18).
The highly automated regulation of step 2, detection wheel on roller brake tester
After multiple-axle vehicle enters roller brake tester (18), industrial computer (14) has detected vehicle in place, industrial computer
(14) realize that brake platform lowering or hoisting gear (D) air bag (24) inflate by magnetic valve (3), on roller brake tester (18) height
Rise, in the process, the ratchet (20) of the locked system of electric-controlled type machine automatization (A) sticks into tooth bar (21), brake platform position monitoring
Device (C) and weighing sensor (28) will constantly recording drum formula brake tester (18) lifting height and weighing sensor
(28) the loading axis weight of sampling, until roller brake tester (18), actual lifting height reaches limit value or weighing sensor
(28) air bag (24) stops inflation when measured value reaches limit value；Now, control system can obtain actual x-F correlation models, root
According to the model, system obtains the deformation quantity of accurate displacement transducer (44), that is, loads lift height according to Standard.Car
After in stable condition, air bag starts to deflate, and braking stage body highly drops to object height, the locked system of electric-controlled type machine automatization
(A) be automatically locked braking stage body, and braking stage body is changed into being rigidly connected with the annexation of lifting stand from being flexibly connected.
Step 3, vehicle measure the detection of axle braking force
After the completion of the highly automated regulation of roller brake tester (18), point out to drive by the display information of dot matrix screen (12)
Member's brake, now sampled data is sent to data acquisition processing system by roller brake tester (18) braking force sensor,
Calculate brake force F now；After vehicle is totally stationary, aobvious (12) display screen of dot matrix will show vehicle braking force, industrial computer
(14) there is axle weight in display interfaces and braking force signal changes over time the curve of relation.After data acquisition terminates, electricity
Magnet (1) is powered, and loosens the arm of force (23) under electromagnet (1) effect along rotate counterclockwise certain angle, you can unclamp to tooth bar
(21) locking, then air bag (24) deflate, roller brake tester (23) highly drops to initial height, is detected
Vehicle rolls brake platform away from.
The axle load analog control device and method of brake platform lift height and axletree loading force correlation model, with can accurately control
It is roller brake tester lifting height, simple, convenient, fast to the transformation of existing drum braking platform, substantially increase multiaxis
The advantages of vehicle braking performance test accuracy.
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