CN104502014B - Braking-force detecting device that automobile axle load based on stand adjusts automatically and method - Google Patents

Braking-force detecting device that automobile axle load based on stand adjusts automatically and method Download PDF

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Publication number
CN104502014B
CN104502014B CN201410783695.5A CN201410783695A CN104502014B CN 104502014 B CN104502014 B CN 104502014B CN 201410783695 A CN201410783695 A CN 201410783695A CN 104502014 B CN104502014 B CN 104502014B
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CN
China
Prior art keywords
axle
lifting platform
lifting
axle load
braking
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CN201410783695.5A
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Chinese (zh)
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CN104502014A (en
Inventor
张立斌
邓祥敬
苏建
单红梅
刘琦峰
岳洪伟
韩玲
袁岳超
马天生
王统
荆忠倩
李福齐
王鹏
刘玉梅
戴建国
陈熔
徐观
林慧英
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吉林大学
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Priority to CN201410783695.5A priority Critical patent/CN104502014B/en
Publication of CN104502014A publication Critical patent/CN104502014A/en
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Publication of CN104502014B publication Critical patent/CN104502014B/en

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Abstract

The invention belongs to Examining Method of Automobile Brake Capability technical field, be specifically related to braking-force detecting device and method that a kind of automobile axle load based on stand adjusts automatically;The braking-force detecting device that automobile axle load based on stand adjusts automatically, including automobile axle load brake tester, lifting platform, data acquisition processing system and control system, lifting platform is provided with identical two, uniform is positioned at both sides before and after automobile axle load brake tester;The detection method of the braking-force detecting device that automobile axle load based on stand adjusts automatically, comprises the following steps: 1, returned to zero by the equipment in data acquisition processing system, gathers axle weight, braking force signal;2, the height of non-detection wheel on lifting platform it is automatically adjusted in;3, detection vehicle measurement axis brake force;The present invention is automatically adjusted the height of the subsidiary lift master of automobile axle load brake tester, it is achieved vehicle simulates the braking effect on practical level road surface really at automobile axle load brake tester, the braking ability of vehicle detected accurately.

Description

Braking-force detecting device that automobile axle load based on stand adjusts automatically and method
Technical field
The invention belongs to Examining Method of Automobile Brake Capability technical field, be specifically related to a kind of automobile axle load based on stand and automatically adjust Whole braking-force detecting device and method.
Background technology
Existing automobile brake perfrmance detects, and automobile reaches automobile axle load brake tester and is braked after weighing on the counterweight table of ground Detection.Checking required braking force by GB GB7258-2012 " motor vehicles safe and technical specification ", front axle braking force is with front The percentage requirement of axle load is more than or equal to 60%, and defines: the axle before motor vehicles bicycle longitudinal centre line center is front Axle, other axles are rear axle;All axletrees of trailer are all pressed rear axle and are calculated;So, double steering shaft is all front axle, and braking ratio per axle is all Requiring that the braking ratio per axle of all axletrees of trailer is desirable that more than or equal to 50% more than or equal to 60%, car load braking ratio requires to be more than or equal to 60%.But, test shows: the second steering spindle of double steering shaft vehicle can be maked somebody a mere figurehead by the first steering spindle and the 3rd shaft portion when detecting, It is greatly reduced adhesion weight, it is difficult to meet the testing requirement of front axle 60% braking ratio.
Trailer, under detection state pulled by tractor, is maked somebody a mere figurehead by shaft portion before the second axle and tractor during trailer three shaft detection equally, Not only it is difficult to reach the testing requirement of 50% braking ratio per axle, it is also difficult to reach the testing requirement of 60% car load braking ratio.Even if vehicle Braking ability is fine, and adhesion weight reduces makes detection maximum braking force reduce, brakes with the axle of ratio that weighs on the counterweight table of ground Rate reduction is difficult to up to standard, causes false retrieval to misjudge.
For problem above, existing technology is: 1, by Loading Method, increases weight or to vehicle plus-pressure or to institute's measuring car axle Additional pulling force increases the wheel adhesion weight to cylinder, the operability extreme difference of this method.2, actuating unit lifting automobile is used Detecting multiple-axle vehicle after shaft weight brake testing stand, structure is complicated, and price is high, troublesome poeration.3, weighing and braking two-in-one Detect on composite bench, the adhesion weight of reduction and detection brake force, although the braking ratio per axle that can meet multiaxle trucks detects, but by In substantially reducing axle weight and complete vehicle weight and brake force, virtually greatly reduce the braking ability requirement of vehicle, be not The detection of specification.
Summary of the invention
Present invention is primarily aimed at the braking-force detecting device and method providing a kind of automobile axle load based on stand automatically to adjust, According to the axle load allocation proportion of each axle of multiple-axle vehicle, it is automatically adjusted the height of lifting platform lifting platen, in automobile axle load immobilization test True simulating vehicle braking effect on practical level road surface on platform, thus detect vehicle braking performances exactly.
The above-mentioned purpose of the present invention is achieved through the following technical solutions, and accompanying drawings is as follows:
The braking-force detecting device that a kind of automobile axle load based on stand adjusts automatically, including automobile axle load brake tester 30, rises Fall platform 3, data acquisition processing system and control system, described lifting platform 3 is provided with identical two, described identical two points Not Wei front side lifting platform 35 and rear side lifting platform 36, described front side lifting platform 35 and rear side lifting platform 36 is uniform is positioned at automobile shafts Both sides before and after weight brake tester 30, every lifting platform includes lifting platform lifting device and ground;
Every lifting platform refers to arbitrary in front side lifting platform 35 and rear side lifting platform 36, front side lifting platform 35 and rear side lifting Platform 36 arranges identical.
Described lifting platform lifting device include hang plate 24, lifting platen 23, axle weight sensor 27, lifting support I-steel 18, Air bag 28 and riser guide 22;
Described ground is made up of front side ground 20 and rear side ground 34, and described front side ground 20 is symmetrical with described rear side ground 34 Arrange, and be designed with ground inclined plane 33;
Described lifting platen 23 is connected by jointed shaft 21 with the hang plate 24 of both sides, and described hang plate 24 tilts near ground The bottom, one end in face 33 is provided with hang plate web wheel 29, and described ground inclined plane 33 supports by hang plate web wheel 29 Plate 24;
Described lifting platen 23 is fixed on rectangle steel framework 26, the upper surface of described axle weight sensor 27 and rectangle steel framework 26 fixing connections, the lower surface of described axle weight sensor 27 is fixing with described lifting support I-steel 18 to be connected, described air bag 28 are fixed on the base of every lifting platform, and the upper surface of described air bag 28 supports I-steel 18 with lifting and contacts, described lifting Guide rail 22 is fixed on the base both sides of every lifting platform;Described lifting supports I-steel 18 and moves up and down along riser guide 22;
Described data acquisition processing system includes Signal-regulated kinase 8, analog quantity patch panel 9, analog acquisition card 14 and industry control Machine 16;
Described analog acquisition card 14 is connected with analog quantity patch panel 9;Described analog quantity patch panel 9 and Signal-regulated kinase 8 phase Even;Described Signal-regulated kinase 8 respectively with the axle weight sensor 27 on described lifting platform 3, automobile axle load brake tester 30 On axle weight sensor, braking force sensor on automobile axle load brake tester 30 is connected;
Described control system includes digital output card 1 and electromagnetic valve 2;Described digital output card 1 is connected with electromagnetic valve 2, Described electromagnetic valve 2 is connected with air bag 28.
The front side longitudinal centre line of lifting platform 35 described in technical scheme, the longitudinal centre line of rear side lifting platform 36 and automobile axle load Brake tester 30 longitudinal centre line overlaps, the cross central line of front side lifting platform 35, the cross central line of rear side lifting platform 36 It is parallel to each other with the cross central line of automobile axle load brake tester 30, described automobile axle load brake tester 30 cross central line Distance to front side lift master 35 and rear side lift master 36 is 1350mm.
Hang plate 24 described in technical scheme is provided with 8 pieces, and every lifting platform has 4 blocks of hang plates 24;Described hang plate 24 Length is identical with the length of lifting platen 23;
Described hang plate 24 lower surface fixes 3 blocks of hang plate channel-section steels 25, the upper plane of described hang plate 24 and lifting platen 23 The attachment coefficient of upper plane all more than 0.1.
Lifting platen 23 described in technical scheme and be provided with 4 pieces, every lifting platform is provided with 2 blocks of lifting platens 23;
The length of described lifting platen 23 is identical with the length of the cylinder above automobile axle load brake tester 30;
Described axle weight sensor 27 is provided with 8, and every lifting platform is provided with 4, and each maximum is weighed 4000kg.
Air bag 28 described in technical scheme is provided with 8, and every lifting platform is provided with 4;
Described riser guide 22 is provided with 4, and every lifting platform is provided with 2.
The inclination angle of ground inclined plane described in technical scheme 33 is 45 degree, and ground inclined plane ending vertical face 32 height is 36 To 38mm.
Lifting described in technical scheme supports and is fixed with the spacing wing 17 of lifting on I-steel 18;It is fixed with on every lifting platform base Lift spacing door 19, lift spacing wing 17 and support I-steel 18 in lifting the space that spacing door 19 limits along lifting with lifting Guide rail 22 moves up and down.
Lifting spacing wing 17 described in technical scheme and be provided with 4, every lifting platform is provided with 2;
The spacing door of described lifting 19 is provided with 4, and every lifting platform is provided with 2.
Digital output card described in technical scheme 1, analog acquisition card 14 are all arranged in industrial computer 16ISA slot, described Industrial computer 16, analog quantity patch panel 9 and Signal-regulated kinase 8 all set and are placed in switch board 31.
The detection method of the braking-force detecting device that the automobile axle load based on stand described in a kind of claim 1 adjusts automatically, Including step in detail below:
Step 1: returned to zero by the equipment in data acquisition processing system, gathers axle weight, braking force signal;
A), before vehicle enters detection place, data acquisition processing system is by the axle weight of described front side lifting platform 35, rear side lifting platform The axle weight of 36 and the axle weight of described automobile axle load brake tester 30 and brake force are set to zero;
B), after vehicle enters detection place, dot matrix display screen 15 points out vehicle detection axle to sail automobile axle load brake tester 30 into, When detecting axletree and being on automobile axle load brake tester 30, the non-detection axle of rear adjacent is just in described rear side lifting platform On 36, before adjacent non-detection axle be just on described front side lifting platform 35, now industrial computer 16 will receive automobile axle load Proximity switch on testing stand 30 detects that vehicle institute measuring car axle arrives the signal of automobile axle load brake tester 30, then by number According to acquisition processing system, record now the non-measured axle axle weight on front side lifting platform 35, the non-measured on rear side lifting platform 36 Measurement axis axle weight on axle axle weight and automobile axle load brake tester 30.
Step 2: be automatically adjusted in the height of non-detection wheel on lifting platform;
Multiple-axle vehicle enters automobile axle load brake tester 30, and industrial computer 16 detects vehicle non-measured axle and measurement axis axle weight, According to the axle load allocation proportion of each axle of multiple-axle vehicle, industrial computer 16 controls electromagnetic valve 2 by control system and realizes filling air bag 28 Gas or venting, control described front side lifting platform 35 and the height of rear side lifting platform 36;In the process, data acquisition process system System detection measurement axis and the axle weight of non-measured axle in real time, the axle of each axle of multiple-axle vehicle until non-measured axle and measurement axis axle weigh Till lotus allocation proportion, the simulation braking effect on practical level road surface, the brake force of vehicle detected.
Step 3: detection vehicle measurement axis brake force;
A), after being automatically adjusted the height of described front side lifting platform 35 and rear side lifting platform 36, driven by dot matrix display screen 15 prompting The person of sailing brakes, and gathers the braking force signal that automobile axle load brake tester 30 braking force sensor produces, and is sent to data acquisition Processing system, calculates brake force now;
B) vehicle is totally stationary, and dot matrix display screen 15 shows vehicle measurement axis left wheel brake power 12 and measurement axis left wheel brake power 13, the display interfaces of industrial computer 16 occurs that axle weight and braking force signal change over the curve of relation.
The technique effect of the present invention:
1, the lifting platform lifting device of the present invention can combine with automotive wheel well, and after airbag aeration, lifting platform rises energy Hang plate, lifting platen, front side ground and rear side ground is made to form plane, it is simple to vehicle travels;After air bag deflation, lifting platform Decline and hang plate, lifting platen, front side ground and rear side ground just can be made to form dovetail groove, both saved material and space also helps Stablizing in wheel.
2, the axle that the present invention gathers according to data acquisition processing system is heavy, braking force signal, divides according to the axle load of each axle of multiple-axle vehicle Proportioning example, industrial computer automatically controls the height of lifting platform by control system, it is achieved true mould on automobile axle load brake tester Intend vehicle braking effect on practical level road surface, thus detect vehicle braking performances quickly and accurately.
3, the present invention starts with from axle weight angle, solves well because multiple-axle vehicle each axle wheel is on ground with in automobile axle load braking Deformation on testing stand, and various cause on ground and calculating at automobile axle load brake tester rigid contact by each axle wheel Error problem, makes experiment more accurate, convenience of calculation.
4, the inventive method is simple to operate, it is easy to safeguard, can be conveniently used in vehicle testing line, and can effectively implement inspection Survey.
Accompanying drawing explanation
The present invention is further illustrated below in conjunction with the accompanying drawings:
Fig. 1 is Automobile Braking Force Detecting schematic diagram;
Fig. 2 a is that lifting platform declines state longitudinal direction side view;
Fig. 2 b is that lifting platform declines the horizontal front view of state;
Fig. 3 a is lifting platform raised configuration longitudinal direction side view;
Fig. 3 b is the horizontal front view of lifting platform propradation;
Fig. 4 is equipment installation site layout;
Fig. 5 is lifting platform foundation drawing;
Fig. 6 a is raising board front view;
Fig. 6 b is raising board side view;
Fig. 7 a is hang plate front view;
Fig. 7 b is hang plate side view;
In figure: 1 digital output card
2 electromagnetic valves
3 lifting platforms
4 non-measured axle right wheel load
5 non-measured axle revolver load
6 wheel weighing instrument right wheel load
7 wheel weighing instrument revolver load
8 Signal-regulated kinase
9 analog quantity patch panels
10 measurement axis revolver load
11 measurement axis right wheel load
12 measurement axis left wheel brake power
13 measurement axis right wheel brake force
14 analog acquisition cards
15 dot matrix display screens
16 industrial computers
17 lift spacing wing
18 liftings support I-steel
19 lift spacing door
Ground on front side of in the of 20
21 jointed shafts
22 riser guides
23 lifting platens
24 hang plates
25 hang plate channel-section steels
26 rectangle steel frameworks
27 axle weight sensors
28 air bags
29 hang plate web wheel
30 automobile axle load brake testeres
31 switch boards
32 ground inclined plane ending vertical faces
33 ground inclined planes
Ground on rear side of in the of 34
Lifting platform on front side of in the of 35
Lifting platform on rear side of in the of 36
Detailed description of the invention
Illustrated embodiment further describes the concrete device embodiments of the present invention below in conjunction with the accompanying drawings.
The braking-force detecting device that automobile axle load based on stand adjusts automatically, including automobile axle load brake tester 30, uniform position Two identical lifting platform 3, data acquisition processing system and control systems of both sides before and after automobile axle load brake tester 30, Every lifting platform in described lifting platform 3 all includes lifting platform lifting device, ground.
Described lifting platform lifting device includes hang plate 24, jointed shaft 21, lifting platen 23, axle weight sensor 27, rectangle steel Framework 26, lifting support I-steel 18, air bag 28, riser guide 22, lift spacing wing 17 and lift spacing door 19.Ginseng Readding Fig. 2 a and 2b and Fig. 3 a and Fig. 3 b, before and after lifting platen 23, both sides are connected with the hang plate 24 of both sides by jointed shaft 21, Ground inclined plane 33 supports hang plate 24, axle weight sensor 27 by hang plate web wheel 29 of the other end of hang plate 24 Two surfaces up and down support I-steel 18 with rectangle steel framework 26 and lifting respectively and be connected, lifting support I-steel 18 and air bag 28 are connected, and rectangle steel framework 26 is connected with lifting platen 23, lift spacing wing 17 and are bolted on lifting support I-shaped On steel 18, lifting spacing door 19 and be welded on lifting platform base, riser guide 22 is also welded on lifting platform base, rises lower limit Position wing 17 supports I-steel 18 with lifting and moves up and down along riser guide 22 in lifting the space that spacing door 19 limits.
Data acquisition processing system includes Signal-regulated kinase 8, analog quantity patch panel 9, analog acquisition card 14 and industrial computer 16. Refering to Fig. 1, Signal-regulated kinase 8 and the axle weight sensor 27 on lifting platform 3 and automobile axle load brake tester 30 upper shaft weight Sensor, braking force sensor are connected, and analog quantity patch panel 9 is connected with Signal-regulated kinase 8, and analog acquisition card 14 passes through Winding displacement is connected with analog quantity patch panel 9, and analog acquisition card 14 is arranged in industrial computer 16ISA slot, industrial computer 16, Analog quantity patch panel 9 and Signal-regulated kinase 8 are placed in switch board 31.
Control system includes digital output card 1 and electromagnetic valve 2.Refering to Fig. 1, digital output card 1 is arranged on industrial computer 16ISA In slot, and being connected with electromagnetic valve 2, electromagnetic valve 2 is connected with lifting platform 3.
Lifting platform 3 totally two: front side lifting platform 35 and rear side lifting platform 36, the longitudinal centre line of front side lifting platform 35, rear side The longitudinal centre line of lifting platform 36 and automobile axle load brake tester 30 longitudinal centre line overlap, front side lifting platform 35 horizontal in The cross central line of heart line, the cross central line of rear side lifting platform 36 and automobile axle load brake tester 30 is parallel to each other, front side Lifting platform 35 and uniform automobile axle load brake tester 30 both sides front and back that are positioned at of rear side lifting platform 36, the braking examination of described automobile axle load Test platform 30 cross central line and be 1350mm to the distance of front side lift master 35 and rear side lift master 36.
Hang plate 24 totally 8 pieces, every lifting platform has 4 blocks of hang plates 24.Its length is identical with the length of lifting platen 23, In order to increase the intensity of hang plate 24, below every block of hang plate 24, weld 3 blocks of hang plate channel-section steels 25, for convenience of hang plate 24 Ground inclined plane 33 is moved, at every block of hang plate channel-section steel 25 near one end of ground inclined plane 33 arrangement hang plate wheel 29, and the attachment coefficient of the upper plane of the upper plane of hang plate 24 and lifting platen 23 is respectively all more than 0.1.
Totally 8, air bag 28, every lifting platform has 4, and air bag 28 is below by being bolted on base, above with act Rise support I-steel 18 to contact, and support this lifting support I-steel 18.
Lift spacing wing 17 totally 4, every lifting platform has 2.Lift totally 4, spacing door 19, every lifting platform has 2.Riser guide 22 totally 4, every lifting platform has 2.Air bag 28 is initially in contraction state, is filling air bag 28 During gas, lifting supports each parts such as I-steel 18 and all can move upward along riser guide 22, when being raised to certain altitude Time, lifting supports the spacing wing 17 of lifting fixing on I-steel 18 and can be limited by lifting spacing door 19, and then is raised to the highest State, when exitting air bag 28, lifting supports each parts such as I-steel 18 and all can move downward along riser guide 22, directly To air bag 28 contraction state.
Lifting platen 23 totally 4 pieces, every lifting platform has 2 blocks of lifting platens 23.Its length and automobile axle load brake tester The length of 30 cylinders above is identical, in order to increase the intensity of lifting platen 23, lifting platen 23 lower surface dispose one with Lifting platen 23 rectangle steel of the same size framework 26.Axle weight sensor 27 totally 8, every lifting platform has 4, each Maximum is weighed 4000kg.
Front side ground 20 and the rear side ground 34 of every lifting platform are identical, and the inclination angle of ground inclined plane 33 is 45 Degree, ground inclined plane ending vertical face 32 height is 36 to 38mm.
The detection method of a kind of braking-force detecting device automatically adjusted for above-mentioned automobile axle load based on stand, including following tool Body step:
The present invention uses LZ-1000 type wheel weighing instrument, for measuring the axle load of vehicle, further determines that the axle load of each axle of multiple-axle vehicle Allocation proportion.The present invention also uses the automobile axle load brake tester of HZ-1302 model, can obtain Y-axis therein and retransmit Sensor and left and right braking force sensor signal, be used for obtaining multiple-axle vehicle measurement axis revolver load, measurement axis right wheel load, measurement Axle left wheel brake power and measurement axis right wheel brake force.
1, the zeroing of the equipment in data acquisition processing system, gathers axle weight, braking force signal
Before vehicle enters detection place, now data acquisition processing system can be by the axle weight of front side lifting platform 35 now, rear side The axle weight of lifting platform 36 and the axle weight of automobile axle load brake tester 30 and brake force are set to zero, when vehicle enters detection place After, dot matrix display screen 15 points out vehicle detection axle to sail automobile axle load brake tester 30 into, when detection axletree is in automobile axle load Time on brake tester 30, just it is on rear side lifting platform 36 with the non-detection axle of detection axle rear adjacent, before detection axle Adjacent non-detection axle is just on the lifting platform 35 of front side, and now industrial computer 16 will receive connecing on automobile axle load testing stand 30 Nearly switch detects that vehicle institute measuring car axle arrives the signal of automobile axle load brake tester 30, then by data acquisition processing system, The record now non-measured axle axle weight on front side lifting platform 35, the weight of the non-measured axle axle on rear side lifting platform 36 and automobile axle load Measurement axis axle weight on brake tester 30.
2, the height of non-detection wheel on lifting platform it is automatically adjusted in
After multiple-axle vehicle enters automobile axle load brake tester 30, industrial computer 16 detects vehicle non-measured axle and measurement axis axle Weight, by the axle load allocation proportion according to each axle of multiple-axle vehicle, industrial computer 16 controls electromagnetic valve 2 by control system and realizes air bag 28 is inflated for deflated, and then lifting platform 35 and the height of rear side lifting platform 36 on front side of control;In the process, at data acquisition Reason system will detect the axle weight of measurement axis and non-measured axle in real time, until non-measured axle and measurement axis axle weigh, multiple-axle vehicle is each Till the axle load allocation proportion of axle, thus simulate the braking effect on practical level road surface really, vehicle detected accurately Brake force.
3, the detection of vehicle measurement axis brake force
After highly automated regulation on lifting platform 3 completes, braked by the prompting driver of dot matrix display screen 15, now automobile shafts Weight brake tester 30 braking force sensor is sent to data acquisition processing system, calculates brake force now;When vehicle is complete After static, dot matrix display screen 15 will display vehicle measurement axis left wheel brake power 12 and measurement axis left wheel brake power 13, industrial computer 16 Display interfaces occur that axle weight and braking force signal change over the curve of relation.
The present invention with the trailer of four axles as instantiation, the analytic explanation that vehicle the 3rd shaft detection is correlated with.The present invention uses The wheel weighing instrument of LZ-1000 model, for measuring the axle load of vehicle, further determines that the axle load allocation proportion of each axle of multiple-axle vehicle. The present invention also uses the automobile axle load brake tester 30 of HZ-1302 model, can obtain Y-axis weight sensor therein and a left side Right braking force sensor signal, is used for obtaining multiple-axle vehicle measurement axis revolver load, measurement axis right wheel load, measurement axis revolver system Power and measurement axis right wheel brake force.
Due to four axle trailers each axle load allocation proportion due to vehicle different, concrete axle load allocation proportion is the most different, general the One axle and the second axle are non-floating axle axle, and two axle axle loads are different, and the 3rd axle and the 4th axle are floating axle axle, and two axle axle loads are identical.
The braking-force detecting device that automobile axle load based on stand adjusts automatically, including lifting platform lifting device, data acquisition process System and control system.Vehicle driver operates according to the prompting of dot matrix display screen 15, starts dot matrix display screen 15 and points out Vehicle the 3rd axle enters automobile axle load brake tester 30, and now data acquisition processing system can non-on rear side lifting platform 36 Measurement axis revolver load 10 on measurement axis right wheel load 4, non-measured axle revolver load 5 and automobile axle load brake tester 30, Measurement axis right wheel load 11, measurement axis left wheel brake power 12 and measurement axis right wheel brake force 13 are set to zero, and now front side Lifting platform 35 is raised configuration, facilitates vehicle to pass through.When the 3rd axle of vehicle arrives automobile axle load brake tester 30, this Time the 4th axle be just parked on rear side lifting platform 36, industrial computer 16 by receive on automobile axle load brake tester 30 close to opening Closing the signal detecting that vehicle institute measuring car axle arrives automobile axle load brake tester 30, now record is existed by data acquisition processing system The axle weight of the 3rd axle on the 4th axle on rear side lifting platform 36 and automobile axle load brake tester 30, according to trailer the 3rd axle and the The axle load allocation proportion of four axles, if the 3rd axle axle is great in being heavily less than on horizontal road at level road the 3rd axle axle weight and the 4th axle axle Face the 4th axle axle weight, industrial computer 16 will pass through control system and controls electromagnetic valve 2, makes air bag 28 exit, lifting platform on rear side of reduction 36;Ruo tri-axle axle is heavily great at level road the 4th axle axle weight less than at level road the 3rd axle axle weight and the 4th axle axle, Industrial computer 16 will pass through control system and controls electromagnetic valve 2 so that it is inflate to air bag 28, lifting platform 36 on rear side of rising;In this mistake Cheng Zhong, data acquisition processing system will detect the 3rd axle and the axle weight of the 4th axle in real time, until the 3rd axle and the 4th axle axle weigh To the axle load allocation proportion of trailer the 3rd axle and the 4th axle.Realize vehicle to simulate really at automobile axle load brake tester 30 At the braking effect on actual road surface, thus detect vehicle braking performances exactly.Through the continuous prompting of dot matrix display screen 15, directly During to prompting brake, driver just touches on the brake, and automobile axle load brake tester 30 braking force sensor detects that signal is sent to number According to acquisition processing system, calculating brake force now, after vehicle is totally stationary, dot matrix display screen 15 will display vehicle the 3rd Axle left and right wheels brake force, the display interfaces of industrial computer 16 occurs that axle weight and braking force signal change over the curve of relation, the Three axle braking forces just detect complete.
The braking-force detecting device that automobile axle load based on stand adjusts automatically, has and changes existing automobile axle load brake tester Make simple, convenient, fast, substantially increase the advantages such as multiple-axle vehicle braking performance test accuracy.For overcoming the deficiencies in the prior art, This method, according to the axle load allocation proportion of each axle of multiple-axle vehicle, is automatically adjusted the height of the subsidiary lift master of automobile axle load brake tester, Realize vehicle and simulate the braking effect on practical level road surface really at automobile axle load brake tester, and then can examine accurately Measure the braking ability of vehicle.

Claims (10)

1. the braking-force detecting device that automobile axle load based on stand adjusts automatically, including automobile axle load brake tester (30), Lifting platform (3), data acquisition processing system and control system, it is characterised in that:
Described lifting platform (3) is provided with identical two, described two identical respectively front side lifting platform (35) and rear side liftings Platform (36), described front side lifting platform (35) and rear side lifting platform (36) be uniform, and to be positioned at automobile axle load brake tester (30) front Rear both sides, every lifting platform includes lifting platform lifting device and ground;
Described lifting platform lifting device includes that hang plate (24), lifting platen (23), axle weight sensor (27), lifting support I-shaped Steel (18), air bag (28) and riser guide (22);
Described ground is made up of front side ground (20) and rear side ground (34), described front side ground (20) and described rear side ground (34) it is symmetrical arranged, and is designed with ground inclined plane (33);
Described lifting platen (23) is connected by jointed shaft (21) with the hang plate (24) of both sides, and described hang plate (24) leans on The bottom, one end of near-earth base inclined plane (33) is provided with hang plate web wheel (29), and described ground inclined plane (33) passes through hang plate Web wheel (29) support inclined plates (24);
Described lifting platen (23) is fixed on rectangle steel framework (26), the upper surface of described axle weight sensor (27) and rectangle steel Framework (26) is fixing to be connected, and the lower surface of described axle weight sensor (27) is fixing with described lifting support I-steel (18) to be connected, Described air bag (28) is fixed on the base of every lifting platform, and the upper surface of described air bag (28) supports I-steel (18) with lifting Contact, described riser guide (22) is fixed on the base both sides of every lifting platform;Described lifting supports I-steel (18) along liter Fall guide rail (22) moves up and down;
Described data acquisition processing system include Signal-regulated kinase (8), analog quantity patch panel (9), analog acquisition card (14) and Industrial computer (16);
Described analog acquisition card (14) is connected with analog quantity patch panel (9);Described analog quantity patch panel (9) and signal condition mould Block (8) is connected;Described Signal-regulated kinase (8) respectively with the axle weight sensor (27) on described lifting platform (3), automobile axle load Axle weight sensor on brake tester (30), the braking force sensor on automobile axle load brake tester (30) are connected;
Described control system includes digital output card (1) and electromagnetic valve (2);Described digital output card (1) and electromagnetic valve (2) Being connected, described electromagnetic valve (2) is connected with air bag (28).
The braking-force detecting device that a kind of automobile axle load based on stand the most according to claim 1 adjusts automatically, its feature It is:
The longitudinal centre line of described front side lifting platform (35), the longitudinal centre line of rear side lifting platform (36) and automobile axle load braking Testing stand (30) longitudinal centre line overlap, the cross central line of front side lifting platform (35), rear side lifting platform (36) horizontal The cross central line of centrage and automobile axle load brake tester (30) is parallel to each other, described automobile axle load brake tester (30) Cross central line is 1350mm to the distance of front side lift master (35) and rear side lift master (36).
The braking-force detecting device that a kind of automobile axle load based on stand the most according to claim 1 adjusts automatically, its feature It is:
Described hang plate (24) is provided with 8 pieces, and every lifting platform has 4 pieces of hang plates (24);The length of described hang plate (24) Spend identical with the length of lifting platen (23);
Described hang plate (24) lower surface fixes 3 pieces of hang plate channel-section steels (25), the upper plane of described hang plate (24) and lift master The attachment coefficient of the upper plane of plate (23) is all more than 0.1.
The braking-force detecting device that a kind of automobile axle load based on stand the most according to claim 1 adjusts automatically, its feature It is:
Described lifting platen (23) is provided with 4 pieces, and every lifting platform is provided with 2 pieces of liftings platen (23);
The length of the length of described lifting platen (23) and automobile axle load brake tester (30) cylinder above is identical;
Described axle weight sensor (27) is provided with 8, and every lifting platform is provided with 4, and each maximum is weighed 4000kg.
The braking-force detecting device that a kind of automobile axle load based on stand the most according to claim 1 adjusts automatically, its feature It is:
Described air bag (28) is provided with 8, and every lifting platform is provided with 4;
Described riser guide (22) is provided with 4, and every lifting platform is provided with 2.
The braking-force detecting device that a kind of automobile axle load based on stand the most according to claim 1 adjusts automatically, its feature It is:
The inclination angle of described ground inclined plane (33) is 45 degree, and ground inclined plane ending vertical face (32) height is 36 to 38mm.
The braking-force detecting device that a kind of automobile axle load based on stand the most according to claim 1 adjusts automatically, its feature It is:
Described lifting supports and is fixed with the spacing wing of lifting (17) on I-steel (18);Lifting it is fixed with spacing on every lifting platform base Door (19), lifts spacing wing (17) and supports I-steel (18) in lifting the space that spacing door (19) limits along lifting with lifting Guide rail (22) moves up and down.
The braking-force detecting device that a kind of automobile axle load based on stand the most according to claim 7 adjusts automatically, its feature It is:
The spacing wing of described lifting (17) is provided with 4, and every lifting platform is provided with 2;
The spacing door of described lifting (19) is provided with 4, and every lifting platform is provided with 2.
The braking-force detecting device that a kind of automobile axle load based on stand the most according to claim 1 adjusts automatically, its feature It is:
Described digital output card (1), analog acquisition card (14) are all arranged in industrial computer (16) ISA slot, described industry control Machine (16), analog quantity patch panel (9) and Signal-regulated kinase (8) all set and are placed in switch board (31).
10. the detection side of the braking-force detecting device automatically adjusted with the automobile axle load based on stand described in claim 1 Method, it is characterised in that include step in detail below:
Step 1: returned to zero by the equipment in data acquisition processing system, gathers axle weight, braking force signal;
A), before vehicle enters detection place, data acquisition processing system is by the axle weight of described front side lifting platform (35), rear side lifting The axle weight of platform (36) and the axle weight of described automobile axle load brake tester (30) and brake force are set to zero;
B), after vehicle enters detection place, dot matrix display screen (15) prompting vehicle detection axle sails automobile axle load brake tester into (30), when detecting axletree and being on automobile axle load brake tester (30), the non-detection axle of rear adjacent is just in described rear side On lifting platform (36), before adjacent non-detection axle be just on described front side lifting platform (35), now industrial computer (16) The proximity switch received on automobile axle load testing stand (30) is detected, and vehicle institute measuring car axle arrives automobile axle load brake tester (30) signal, then pass through data acquisition processing system, the record now non-measured axle axle on front side lifting platform (35) weight, Non-measured axle axle weight on rear side lifting platform (36) and the measurement axis axle weight on automobile axle load brake tester (30);
Step 2: be automatically adjusted in the height of non-detection wheel on lifting platform;
Multiple-axle vehicle enters automobile axle load brake tester (30), and industrial computer (16) detects vehicle non-measured axle and measurement axis axle Weight, according to the axle load allocation proportion of each axle of multiple-axle vehicle, it is right that industrial computer (16) is realized by control system control electromagnetic valve (2) Air bag (28) is inflated for deflated, controls described front side lifting platform (35) and the height of rear side lifting platform (36);In the process, Data acquisition processing system detects the axle weight of measurement axis and non-measured axle in real time, until non-measured axle and measurement axis axle weigh many Till the axle load allocation proportion of each axle of axle vehicle, the simulation braking effect on practical level road surface, the brake force of vehicle detected;
Step 3: detection vehicle measurement axis brake force;
A) after being automatically adjusted the height of described front side lifting platform (35) and rear side lifting platform (36), by dot matrix display screen (15) Prompting driver's brake, gathers the braking force signal that automobile axle load brake tester (30) braking force sensor produces, and is sent to Data acquisition processing system, calculates brake force now;
B) vehicle is totally stationary, dot matrix display screen (15) display vehicle measurement axis left wheel brake power (12) and measurement axis left wheel brake Power (13), the display interfaces of industrial computer (16) occurs that axle weight and braking force signal change over the curve of relation.
CN201410783695.5A 2014-12-16 2014-12-16 Braking-force detecting device that automobile axle load based on stand adjusts automatically and method CN104502014B (en)

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CN105938034B (en) * 2016-07-04 2018-08-10 吉林大学 Lateral force test device and method based on tablet braking
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