CN104502015B - The detection method of drum reaction type lift type automobile axle load brake composite inspection table - Google Patents
The detection method of drum reaction type lift type automobile axle load brake composite inspection table Download PDFInfo
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- CN104502015B CN104502015B CN201410833142.6A CN201410833142A CN104502015B CN 104502015 B CN104502015 B CN 104502015B CN 201410833142 A CN201410833142 A CN 201410833142A CN 104502015 B CN104502015 B CN 104502015B
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Abstract
The detection method of drum reaction type lift type automobile axle load brake composite inspection table, belongs to motor vehicle testing equipment field, is specifically related to the detection equipment of a kind of testing machine motor-car braking ability.Including mobile framework (2), fixed frame (1) and braking-force detecting device, what mobile framework (2) slided up and down is arranged in fixed frame (1), the lifting device promoting mobile framework (2) to lift it is provided with in fixed frame (1), braking-force detecting device is fixed on mobile framework (2), braking-force detecting device is promoted to rise by lifting device, vehicle level is made to fix, vehicle is avoided to form angle with horizontal plane, thus accurately measure the brake force performance of vehicle, improve the accuracy of detection, mobile framework is laterally fixed by fixed frame, prevent mobile framework from swinging when braking-force detecting device works, working stability, reliably.
Description
Technical field
The detection method of drum reaction type lift type automobile axle load brake composite inspection table, belongs to motor vehicle testing equipment neck
Territory, is specifically related to the detection equipment of a kind of testing machine motor-car braking ability.
Background technology
In the process of moving, its technology status and serviceability gradually degenerate automobile along with the increase of mileage number, occur
Dynamic property declines, and economy is deteriorated, and security reliability reduces, and has a strong impact on the performance of automobile economic benefit and conevying efficiency.Special
It it not the quality of the automobile brake perfrmance life security that is directly connected to people.This just requires to be found out fault in advance and disappear
Remove.During automobile uses, its operation conditions is judged, and takes corresponding countermeasure, the use of automobile can be improved greatly
Reliability, gives full play to automobile usefulness and reduces maintenance cost, it is thus achieved that bigger economic benefit.So, develop automotive check and examine
Disconnected technology has great importance.
Traditional sense is got on the car shaft weight brake composite bench, and its structure is to install weighing and sensing in the four corners below of brake platform
Device, plays the detection of axle weight effect, due to own structural characteristics, generally makes the tested axle of automobile be less than non-detection axle, thus
Forming an inclination angle with horizontal plane, inventor tests this inclination angle of discovery and will make detection and the evaluation of automobile axle load and braking ability
Become error, braking-distance figures deviation thus occurs, travel to vehicle and bring great potential safety hazard.And the inspection of existing brake force
Survey can only detect the vehicle braking ability when zero load, it is impossible to detection vehicle is at the braking ability of loading condition.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, it is provided that a kind of simple in construction, detection standard
Really, it is possible to simulate the detection of the drum reaction type lift type automobile axle load brake composite inspection table of detection under multiple load condition
Method, it is possible to obtain more comprehensively detecting data.
The technical solution adopted for the present invention to solve the technical problems is: this drum reaction type lift type automobile axle load is braked
Composite checkout stand, including mobile framework, fixed frame and braking-force detecting device, being arranged on that mobile framework slides up and down is fixing
In framework, being provided with the lifting device promoting mobile framework lifting in fixed frame, braking-force detecting device is fixed on mobile framework
On.Promote braking-force detecting device to rise by lifting device, make vehicle level fix, it is to avoid vehicle forms folder with horizontal plane
Angle, thus accurately measure the brake force performance of vehicle, improving the accuracy of detection, mobile framework is carried out laterally solid by fixed frame
Fixed, prevent mobile framework from swinging when braking-force detecting device work, working stability, reliably.
Preferably, the inwall of described fixed frame is provided with long rails, and lifting device promotes mobile framework along long rails
Move up and down.Guarantee mobile framework vertical lift, it is ensured that vehicle stabilization, and long rails can avoid mobile framework with fixing
Framework phase mutual friction.
Preferably, described lifting device includes that symmetry is fixed at least four hydraulic cylinder below mobile framework.
Preferably, described braking-force detecting device includes that cylinder group and force measuring machine, cylinder are overlapped in the left and right two that structure is identical
Group includes that drive roll and follower rollers, the drive roll of two set cylinder groups independently connect driving means, and two set cylinders
Group connects control device respectively, and force measuring machine connects driving means or drive roll.
Preferably, described two set cylinder groups are separately fixed on two mobile frameworks, and two mobile frameworks are connected to
Lifting device, two set cylinder group independent-liftings.The axle wheel load of two semiaxis can be individually detected, each wheel can be individually regulated
Highly, it is possible to make vehicle be more nearly abswolute level, testing result is more accurate, significantly can be with simulating vehicle unbalance loading
Situation, it is possible to obtain more comprehensively detect data.
Preferably, it is additionally provided with elevator apparatus of wheel between described drive roll and follower rollers.When vehicle reaches braking inspection
Testing platform, wheel is placed between drive roll and follower rollers, puts down lifting device, detects, when tested automotive check is complete,
Lifting device rises parallel with drive roll, follower rollers, it is simple to vehicle rolls check-out console away from.
Preferably, being additionally provided with the 3rd cylinder between described drive roll and follower rollers, wheel is pressed on the 3rd rolling
On cylinder, the 3rd cylinder connects speed probe.Control device and i.e. would know that, by speed probe, the rotation feelings that tested vechicle is taken turns
Condition, when tested wheel braking, when rotating speed drops to close to locking, controls the corresponding electric signal that device is sent according to speed probe
Driving motor is made to stop operating, to prevent cylinder butcher cuts tire and protection from driving motor.
Preferably, described driving means includes motor, decelerator and Chain conveyer, and motor is slowed down rear-guard by decelerator
Dynamic drive roll, drive roll drives follower rollers to rotate by Chain conveyer, and reducer output shaft is coaxially connected with drive roll；
Force measuring machine includes that dynamometry lever and braking sensor, dynamometry lever one end are connected with sensor, the other end with subtract
Speed device housing connects, and the power proportional to brake force or displacive transformation that dynamometry lever is transmitted by braking sensor become the signal of telecommunication
It is transported to control device.
Preferably, the downside of described mobile framework is additionally provided with weight measurement mechanism.
Utilize the detection method of above-mentioned drum reaction type lift type automobile axle load brake composite inspection table, including following step
Rapid:
A, unloaded braking forces measuring: two wheels on vehicle axletree to be detected are sailed to braking-force detecting device
On, lifting device promotes mobile framework to rise, and makes axletree to be detected be on sustained height with other axletrees of vehicle, brake force
The detection device detection vehicle brake force performance when zero load；
B, load brake power detect: lifting device promotes mobile framework to continue to rise certain altitude, makes axletree to be detected high
In other axletrees of vehicle, the braking-force detecting device detection vehicle brake force performance when load.Detected by lifting device
Vehicle brake force in load conditions, it is provided that more comprehensively detect data.
The present invention can also use following structure:
Being respectively equipped with the 3rd cylinder in two set cylinder groups, two the 3rd cylinders are correspondingly provided with sensor respectively and are connected to control
Device processed, when the 3rd cylinder of two set cylinder groups is depressed simultaneously, check-out console drives motor circuit just to can turn on, work safety
Reliably, staff's maloperation is prevented.
Described weight measurement mechanism is integrally fixed at the load cell between mobile framework and lifting device.
Compared with prior art, the present invention is had the beneficial effect that
1, testing result is accurate: promotes braking-force detecting device to rise by lifting device, makes vehicle level fix, it is to avoid
Vehicle forms angle with horizontal plane, thus accurately measures the brake force performance of vehicle, improves the accuracy of detection, fixed frame pair
Mobile framework is laterally fixed, and prevents mobile framework from swinging when braking-force detecting device works, working stability, can
Lean on.
2, offer more comprehensively detects data, can raise braking-force detecting device further by lifting device, can
With simulating vehicle brake force in load conditions, and can only raise the wheel of side, simulating vehicle is in the case of unbalance loading
Brake force, it is provided that more comprehensively detect data.
3, lifting device promotes mobile framework to move up and down along long rails, it is ensured that mobile framework vertical lift, it is ensured that car
Stable, and long rails can avoid mobile framework and fixed frame phase mutual friction.
Accompanying drawing explanation
Fig. 1 is the front view of this drum reaction type lift type automobile axle load brake composite inspection table.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the side-looking in Fig. 1 under the original state of this drum reaction type lift type automobile axle load brake composite inspection table
Figure.
Fig. 4 is the side-looking in Fig. 1 under the duty of this drum reaction type lift type automobile axle load brake composite inspection table
Figure.
Wherein: 1, fixed frame 2, mobile framework 3, motor 4, decelerator 5, Chain conveyer 6, drive roll 7, from
Dynamic cylinder 8, dynamometry lever 9, force cell 10, elevator apparatus of wheel the 11, the 3rd cylinder 12, load cell 13,
Hydraulic cylinder 14, long rails 15, wheel.
Detailed description of the invention
Fig. 1 ~ 4 are the optimal enforcement of the detection method of this drum reaction type lift type automobile axle load brake composite inspection table
Example, 1 ~ 4 the present invention will be further described below in conjunction with the accompanying drawings.
With reference to Fig. 1 ~ 4, this drum reaction type lift type automobile axle load brake composite inspection table, including mobile framework 2, fix
Framework 1 and braking-force detecting device, what mobile framework 2 slided up and down is arranged in fixed frame 1, is provided with and pushes away in fixed frame 1
The lifting device of dynamic mobile framework 2 lifting, braking-force detecting device is fixed on mobile framework 2, promotes system by lifting device
Power detecting device rises, and makes vehicle level fix, it is to avoid vehicle forms angle with horizontal plane, thus accurately measures the system of vehicle
Power performance, improves the accuracy of detection, and mobile framework 2 is laterally fixed by fixed frame 1, prevents mobile framework 2 in system
Swing during power detecting device work, working stability, reliably.
With reference to Fig. 1, braking-force detecting device includes that cylinder group is overlapped in the left and right two that structure is identical, and two set cylinder groups are fixed respectively
On two mobile frameworks 2, two mobile frameworks 2 are connected to lifting device, two set cylinder group independent-liftings, can be independent
Regulating the height of each wheel 15, it is possible to make vehicle be more nearly abswolute level, testing result is more accurate, significantly may be used
Situation with simulating vehicle unbalance loading, it is possible to obtain more comprehensively detect data.
Lifting device in the present embodiment includes that symmetry is fixed on four hydraulic cylinders 13 below each mobile framework 2, liquid
Cylinder pressure 13 supports four angles of mobile framework 2, mobile framework 2 is carried out firm support, and hydraulic cylinder 13 can bear vehicle
Axle weight, it is ensured that moving framework 2 when being braked power detection and do not shake, testing result is accurate.
It is also preferred that the left the present invention is additionally provided with weight measurement mechanism in the downside of mobile framework 2, by weight measurement mechanism measurement axis weight, from
And disposably completing braking forces measuring, the weight measurement mechanism in the present embodiment is integrally fixed at the check weighing of hydraulic cylinder 13 piston rod upper end and passes
Sensor 12, certain load cell 12 may be also secured at the lower end of hydraulic cylinder 13.Load cell 12 is fixed on hydraulic cylinder 13
And it can be avoided that the error that caused of hydraulic cylinder 13 between mobile framework 2, testing result is more accurate.
With reference to Fig. 2, cylinder group includes drive roll 6 and follower rollers 7, and the drive roll 6 of two set cylinder groups is independently
Connecting driving means, and two set cylinder groups connect control device respectively, force measuring machine connects driving means, drives in the present embodiment
Dynamic device includes motor 3, decelerator 4 and Chain conveyer 5, and motor 3 is slowed down rear drive drive roll 6 by decelerator 4, slows down
Device 4 is double reduction, and the effect of decelerator 4 is to slow down to increase to turn round, and its speed reducing ratio is according to the rotating speed of motor 3 and testing drum rotating speed
Determining, drive roll 6 drives follower rollers 7 to rotate by Chain conveyer 5, and decelerator 4 output shaft is coaxially connected with drive roll 6；
Force measuring machine includes that dynamometry lever 8 and braking sensor, dynamometry lever 8 one end are connected with sensor, the other end and decelerator 4 shell
Body connects, and the power proportional to brake force or displacive transformation that dynamometry lever 8 is transmitted by braking sensor become the signal of telecommunication to be transported to
Control device.
With reference to Fig. 3 ~ 4, the inwall of fixed frame 1 is provided with long rails 14, and lifting device promotes mobile framework 2 along longitudinal rail
Road 14 moves up and down, it is ensured that mobile framework 2 vertical lift, it is ensured that vehicle stabilization, and long rails 14 can avoid movable frame
Frame 2 and fixed frame 1 phase mutual friction.
Elevator apparatus of wheel 10 it is additionally provided with, it is simple to automobile discrepancy brake test bench between drive roll 6 and follower rollers 7,
When vehicle reaches brake test bench, and wheel 15 is placed between drive roll 6 and follower rollers 7, put down elevator apparatus of wheel 10 and enter
Row detection, when tested automotive check is complete, elevator apparatus of wheel 10 rises parallel with drive roll 6, follower rollers 7, it is simple to car
Roll check-out console away from.Being additionally provided with the 3rd cylinder 11 between drive roll 6 and follower rollers 7, wheel 15 is pressed on the 3rd rolling
On cylinder 11, the 3rd cylinder 11 connects speed probe (being not drawn in figure), when the wheel 15 of vehicle be placed in drive roll 6 with from
Depress the 3rd cylinder 11 while on dynamic cylinder 7, and keep reliable contacts with it.Control device can be obtained by speed probe
Know the rotation situation of tested wheel 15, when tested wheel 15 is braked, when rotating speed drops to close to locking, control device according to rotating speed
The corresponding electric signal that sensor is sent makes driving motor 3 stop operating, to prevent drive roll 6 from taking turns with follower rollers 7 butcher cuts
Tire and protection drive motor.It is also preferred that the left be respectively equipped with the 3rd cylinder 11 in two set cylinder groups, two the 3rd cylinder 11 correspondences respectively
Being provided with sensor and be connected to control device, sensor mentioned here is photoswitch (being not drawn in figure), the most all right
Being magnetic switch, such 3rd cylinder 11 is also as safety guard use, only when the 3rd cylinder 11 of two set cylinder groups while
When being depressed, check-out console drives motor circuit just to can turn on, safe and reliable, prevents staff's maloperation.
The present invention also provides for a kind of inspection utilizing above-mentioned drum reaction type lift type automobile axle load brake composite inspection table
Survey method, comprises the following steps:
A, unloaded braking forces measuring: two wheels 15 on vehicle axletree to be detected are sailed to braking-force detecting device
On, lifting device promotes mobile framework 2 to rise, and makes axletree to be detected be on sustained height with other axletrees of vehicle, braking
The force checking device detection vehicle brake force performance when zero load；
Concrete, when vehicle reaches brake test bench, two wheels 15 of axle to be detected be separately fixed at drive roll 6 with
Between follower rollers 7, hydraulic cylinder 13 is started working, and along long rails 14, cylinder group is given rise to certain height, simultaneously
Check weighing turns sensor 12 and records axle wheel load around respectively, and while lifting, the 3rd cylinder 11 is depressed also and it at inspection wheel 15
Keeping reliable contacts and blocked photoswitch and triggered power supply, motor 3 operating drives master rotor, rotates through chain, driven rolling
Cylinder 7 concomitant rotation, after wheel 15 stabilization of speed, record wheel 15 and drag power.Then, driver steps on system according to screen display prompting
Dynamic pedal, wheel 15 reduces speed now rotation under the moment of friction effect of wheel 15 brake.The cylinder that now motor 3 drives
The tangential direction effect brake force of wheel 15 tire periphery is overcome brake frictional torque, maintains wheel 15 to continue to rotate.With
This simultaneously wheel 15 tire drive roll 6 and follower rollers 7 surface tangent direction are added one with brake force direction reversely etc.
The counteracting force of value, decelerator 4 housing rotates rightabout towards cylinder together with dynamometry lever 8 and swings, dynamometry lever 8 one end
Power or displacement are converted into the signal of telecommunication being in proportion with brake force through force cell 9.The telecommunications sent here from force cell 9
After number amplified filtering, it is sent to A/D transducer and is converted into respective digital amount, after computer collection, storing and process, to system
Power time curve is analyzed, it is possible to obtain the relevant parameters such as maximum braking force, brake compensation, coordination time.Inspection
Surveying complete hydraulic cylinder 13 and drop to original state, vehicle rolls check-out console away from and completes detection.
B, load brake power detect: lifting device promotes mobile framework 2 to continue to rise certain altitude, makes axletree to be detected high
In other axletrees of vehicle, the braking-force detecting device detection vehicle brake force performance when load；During concrete practice,
Generally hydraulic cylinder 13 raises 100mm further, makes detection axletree higher than other axletrees 100mm；
C, unbalance loading braking forces measuring: the lifting device of a mobile framework 2 makes wheel 15 and other vehicles of vehicle of correspondence
The most identical, another lifting device moving framework 2 makes wheel 15 be kept above the height of other wheels 15, so can be with mould
Intending the situation of vehicle unbalance-loading, braking-force detecting device detects the brake force performance during unbalance loading of vehicle；Thus provide more comprehensive
Detection data.
Above-mentioned detecting step is without sequencing.
The above, be only presently preferred embodiments of the present invention, is not the restriction that the present invention makees other form, appoints
What those skilled in the art changed possibly also with the technology contents of the disclosure above or be modified as equivalent variations etc.
Effect embodiment.But every without departing from technical solution of the present invention content, the technical spirit of the foundation present invention is to above example institute
Any simple modification, equivalent variations and the remodeling made, still falls within the protection domain of technical solution of the present invention.
Claims (9)
1. the detection method of drum reaction type lift type automobile axle load brake composite inspection table, described drum reaction type lift type
Automobile axle load brake composite inspection table includes mobile framework (2), fixed frame (1) and braking-force detecting device, mobile framework (2)
Slide up and down is arranged in fixed frame (1), is provided with the lifting device promoting mobile framework (2) to lift in fixed frame (1),
Braking-force detecting device is fixed on mobile framework (2)；
It is characterized in that, comprise the following steps:
A, unloaded braking forces measuring: two wheels (15) on vehicle axletree to be detected are sailed to braking-force detecting device
On, lifting device promotes mobile framework (2) to rise, and makes axletree to be detected be on sustained height with other axletrees of vehicle, system
The power detecting device detection vehicle brake force performance when zero load；
B, load brake power detect: lifting device promotes mobile framework (2) to continue to rise certain altitude, makes axletree to be detected be higher than
Other axletrees of vehicle, the braking-force detecting device detection vehicle brake force performance when load.
Detection method the most according to claim 1, it is characterised in that: the inwall of described fixed frame (1) is provided with longitudinal rail
Road, lifting device promotes mobile framework (2) to move up and down along long rails.
Detection method the most according to claim 1 and 2, it is characterised in that: described lifting device includes that symmetry is fixed on shifting
At least four hydraulic cylinder (13) of dynamic framework (2) lower section.
Detection method the most according to claim 1, it is characterised in that: described braking-force detecting device includes that structure is identical
Left and right two set cylinder group and force measuring machine, cylinder group includes drive roll (6) and follower rollers (7), the active of two set cylinder groups
Cylinder (6) independently connects driving means, and two set cylinder groups connect control device respectively, and force measuring machine connects driving means
Or drive roll (6).
Detection method the most according to claim 4, it is characterised in that: described two set cylinder groups are separately fixed at two movements
On framework (2), two mobile frameworks (2) are connected to lifting device, two set cylinder group independent-liftings.
Detection method the most according to claim 4, it is characterised in that: between described drive roll (6) and follower rollers (7)
It is additionally provided with elevator apparatus of wheel (10).
7. according to the detection method described in claim 4 or 6, it is characterised in that: described drive roll (6) and follower rollers (7)
Between be additionally provided with the 3rd cylinder (11), wheel (15) is pressed on the 3rd cylinder (11), the 3rd cylinder (11) connect have turn
Speed sensor.
Detection method the most according to claim 4, it is characterised in that: described driving means includes motor (3), decelerator
(4) and Chain conveyer (5), motor (3) passes through decelerator (4) deceleration rear drive drive roll (6), and drive roll (6) passes through chain
Transmission (5) drives follower rollers (7) to rotate, and decelerator (4) output shaft is coaxially connected with drive roll (6)；
Force measuring machine includes that dynamometry lever (8) and braking sensor, dynamometry lever (8) one end are connected with sensor, the other end with
Decelerator (4) housing connects, the power proportional to brake force that dynamometry lever (8) is transmitted by braking sensor or displacive transformation
The signal of telecommunication is become to be transported to control device.
Detection method the most according to claim 1, it is characterised in that: the downside of described mobile framework (2) is additionally provided with check weighing
Mechanism.
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|---|---|---|---|
| CN201410833142.6A CN104502015B (en) | 2014-12-26 | 2014-12-26 | The detection method of drum reaction type lift type automobile axle load brake composite inspection table |
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| CN201410833142.6A CN104502015B (en) | 2014-12-26 | 2014-12-26 | The detection method of drum reaction type lift type automobile axle load brake composite inspection table |
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| CN104502015B true CN104502015B (en) | 2016-08-24 |
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| CN106644518A (en) * | 2017-01-05 | 2017-05-10 | 贵州中航交通科技有限公司 | Automotive loading brake inspection table |
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| CN107727413B (en) * | 2017-11-13 | 2023-09-26 | 西华大学 | Automobile brake experiment table lifting device with speed measuring roller |
| CN108414440A (en) * | 2018-03-21 | 2018-08-17 | 郑州东辰科技有限公司 | A kind of attachment coefficient tester |
| CN110031144B (en) * | 2019-05-20 | 2023-11-17 | 江苏省特种设备安全监督检验研究院 | Multifunctional static braking torque testing device and testing method |
| CN115014808B (en) * | 2022-07-01 | 2023-05-05 | 翁伟婧 | Flat plate type brake detection device |
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