CN204495568U - A kind of automobile brake perfrmance pick-up unit - Google Patents

A kind of automobile brake perfrmance pick-up unit Download PDF

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Publication number
CN204495568U
CN204495568U CN201520206947.8U CN201520206947U CN204495568U CN 204495568 U CN204495568 U CN 204495568U CN 201520206947 U CN201520206947 U CN 201520206947U CN 204495568 U CN204495568 U CN 204495568U
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lifting
unit
cylinder
drive roll
pick
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CN201520206947.8U
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Chinese (zh)
Inventor
解文杰
李德宽
杨少栋
贾晓磊
张喜龙
吕彦卿
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SHIJIAZHUANG HUAYAN TRAFFIC TECHNOLOGY Co Ltd
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SHIJIAZHUANG HUAYAN TRAFFIC TECHNOLOGY Co Ltd
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Abstract

The utility model discloses a kind of automobile brake perfrmance pick-up unit, by loading lifting device, the tested axle of tested vehicle is elevated, increased the axle weight of tested axle by axle load transfer, carry out the load condition of this detection axis when simulated automotive loads, the loading braking ability of each axletree can be measured successively.Through test of many times, the automobile brake perfrmance pick-up unit that the utility model provides, can to multiaxis lorry and and fill axle trailer carry out lifting load braking performance test, detect the maximum braking force of automobile truly, detection efficiency is high, adds vehicle driving safety coefficient.

Description

A kind of automobile brake perfrmance pick-up unit
Technical field
The utility model relates to technical field of automobile detection, especially, relates to a kind of automobile brake perfrmance pick-up unit.
Background technology
The braking ability of automobile refers to that automobile reduces the speed of a motor vehicle rapidly until the ability of parking, and the evaluation index of automobile brake perfrmance is braking distance and braking deceleration.Automobile in the process of moving, keeps good braking ability, is directly connected to traffic safety problem.At present, highway goods transportation based on multiaxis lorry and and fill axle trailer.Multiaxis lorry and and fill that the braking ability of axle trailer is defective major traffic accidents can occur, cause serious casualties and property loss.Therefore, how the braking ability of automobile is detected, and detect truly multiaxis lorry and and fill the maximum braking force of axle trailer, improve detection efficiency, increasing vehicle driving safety coefficient, is the technical matters that those skilled in the art need solution badly.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of automobile brake perfrmance pick-up unit, can detect the braking ability of automobile, and detect truly multiaxis lorry and and fill the maximum braking force of axle trailer, improve detection efficiency, increase vehicle driving safety coefficient.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of automobile brake perfrmance pick-up unit, comprising: cylinder group, and described cylinder group is two, is disposed in parallel on brake platform; Each described cylinder group comprises drive roll and follower rollers, and described drive roll and follower rollers be arranged in parallel, between the drive roll that two wheels on the tested axle of automobile can lay respectively at two cylinder group and follower rollers; Drive unit, the speed reduction unit that described drive unit comprises motor and is connected with described motor, described speed reduction unit is connected with described drive roll, and for driving described drive roll to rotate, described drive roll can drive described follower rollers to rotate; 3rd cylinder, described 3rd cylinder is two, is separately positioned between each drive roll and follower rollers, contacts with described wheel, and the rotating speed of described 3rd cylinder equals the rotating speed of described wheel in real time; Load lifting mechanism; Described loading lifting mechanism is arranged on the both sides of described brake platform, for brake platform described in lifting, described loading lifting mechanism is provided with LOAD CELLS, for the axle weight of tested axle after measuring lifting; Measurement mechanism, described measurement mechanism comprises dynamometry lever and force cell, and described dynamometry lever one end contacts with described force cell, and the other end is connected with described reducer shell, during for measuring described wheel braking, described wheel is passed to the damping force of described speed reduction unit; And control system, described control system and described drive unit, the 3rd cylinder, load lifting mechanism and be connected with measurement mechanism, go out corresponding steering order for the collection of signal, calculating and sending.
Preferably, also comprise the optoelectronic switch that puts in place being arranged on described cylinder group side, described in the optoelectronic switch that puts in place detect that wheel can be issued to bit instruction to control system after entering described cylinder group.
Preferably, described loading lifting mechanism comprises Lifting air sac, air-bag base and weighing support, and described Lifting air sac is arranged on described air-bag base, and described weighing support is arranged on described Lifting air sac, described weighing support is connected with described brake platform, and described LOAD CELLS is arranged on described weighing support.
Preferably, the output shaft of described speed reduction unit is coaxially connected with described drive roll, and described drive roll is connected by Chain conveyer with described follower rollers.
Preferably, also comprise the discrepancy car lifting mechanism be arranged between described drive roll and follower rollers, described discrepancy car lifting mechanism comprises lifting jack and is arranged on the lifting flat board on described lifting jack.
Preferably, the two ends of described drive roll and described follower rollers are supported on described brake platform with roller bearings and bearing seat respectively.
Preferably, also comprise be arranged on described brake platform side enter car corbel back slab.
The beneficial effect adopting technique scheme to produce is:
During the automobile brake perfrmance pick-up unit work that the utility model provides, by brake platform in honest for tested vehicle traveling placed in the middle, until between the drive roll that is placed in two cylinder group respectively of two wheels on tested axle and follower rollers, now variator is placed in neutral always, after automobile puts in place, brake platform is lifted certain altitude by control system controlled loading lifting device, brake platform is elevated by the tested axle of tested vehicle is also corresponding while elevating, increased the axle weight of tested axle by axle load transfer, carry out the load condition of this detection axis when simulated automotive loads.Then control system sends instruction starter motor, rotate through speed reduction unit deceleration rear drive drive roll, drive roll drives follower rollers to rotate, drive roll and follower rollers are with motor car wheel at the uniform velocity to rotate further, then, control system prompting driver steps on brake pedal, and wheel reduces speed now under the friction force of detent.The cylinder now driven by motor and speed reduction unit is also at the uniform velocity rotating according to the speed before wheel decelerates, therefore a driving force contrary with damping force direction is produced to the tangential direction of the tire periphery of wheel, continue to rotate to maintain wheel, meanwhile, wheel tyre produces an equal-sized reacting force contrary to this driving force direction to cylinder surface tangential direction, under this reaction force acts, the speed reducer housing be connected with cylinder together with dynamometry lever towards the backswing of cylinder rotation direction, the force cell of dynamometry lever one end is stressed, export the electric signal be in proportion with damping force, after control system amplification filtering, change into digital signal printout.On the other hand, the 3rd cylinder contacts with wheel, and rotating speed equals the rotating speed of wheel in real time; the tach signal of the 3rd cylinder is input in control system, in test, when the slip rate between wheel and cylinder drops to 25%; control system accessory drive is shut down, and is completed.Slip rate refers to the ratio stepping on value that brake pedal rear wheel rotating speed declines and the tachometer value of wheel when not stepping on brake pedal.
The automobile brake perfrmance pick-up unit that the utility model provides, by loading lifting device, the tested axle of tested vehicle is elevated, increased the axle weight of tested axle by axle load transfer, carry out the load condition of this detection axis when simulated automotive loads, the loading braking ability of each axletree can be measured successively.Through test of many times, the automobile brake perfrmance pick-up unit that the utility model provides, can to multiaxis lorry and and fill axle trailer carry out lifting load braking performance test, detect the maximum braking force of automobile truly, detection efficiency is high, adds vehicle driving safety coefficient.
Accompanying drawing explanation
Fig. 1 is the front view of the automobile brake perfrmance pick-up unit that the utility model provides;
Fig. 2 is the vertical view of the automobile brake perfrmance pick-up unit that the utility model provides.
In upper figure, the corresponding relation between Reference numeral and component names is:
1 cylinder group; 11 drive rolls; 12 follower rollers; 2 brake platforms; 3 speed reduction units; 4 the 3rd cylinders; 5 load lifting mechanism; 51 Lifting air sacs; 52 air-bag bases; 53 weighing supports; 6 discrepancy car lifting mechanisms; 61 lifting jacks; 62 liftings are dull and stereotyped; 7 put in place optoelectronic switch; 8 enter car corbel back slab.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 1 and Fig. 2, wherein, Fig. 1 is the front view of the automobile brake perfrmance pick-up unit that the utility model provides; Fig. 2 is the vertical view of the automobile brake perfrmance pick-up unit that the utility model provides.
As depicted in figs. 1 and 2, the automobile brake perfrmance pick-up unit that the utility model provides, comprises cylinder group 1, drive unit, the 3rd cylinder 4, loads lifting mechanism 5, measurement mechanism and control system.Wherein, cylinder group 1 is two, is disposed in parallel on brake platform 2; Each cylinder group 1 comprises drive roll 11 and follower rollers 12, and drive roll 11 and follower rollers 12 be arranged in parallel, and two wheels on the tested axle of automobile can lay respectively between the drive roll 11 of two cylinder group 1 and follower rollers 12; The speed reduction unit 3 that drive unit comprises motor and is connected with motor, speed reduction unit 3 is connected with drive roll 11, and for driving drive roll 11 to rotate, drive roll 11 can drive follower rollers 12 to rotate; 3rd cylinder 4 is two, is separately positioned between each drive roll 11 and follower rollers 12, contacts with wheel, and the rotating speed of the 3rd cylinder 4 equals the rotating speed of wheel in real time; Load lifting mechanism 5 and be arranged on the both sides of brake platform 2, for lifting brake platform 2, be provided with LOAD CELLS, for the axle weight of tested axle after measuring lifting; Measurement mechanism comprises dynamometry lever and force cell, and dynamometry lever one end contacts with force cell, and the other end is connected with speed reduction unit 3 housing, and during for measuring wheel braking, wheel is passed to cylinder, and cylinder is passed to the damping force of speed reduction unit 3; Control system and drive unit, the 3rd cylinder 4, load lifting mechanism 5 and be connected with measurement mechanism, go out corresponding steering order for the collection of signal, calculating and sending.
During the automobile brake perfrmance pick-up unit work that the utility model provides, by tested vehicle according to brake platform 2 in honest traveling placed in the middle, until two wheels on tested axle are placed between the drive roll 11 of two cylinder group 1 and follower rollers 12 respectively, now speed reduction unit 3 is placed in neutral always, after automobile puts in place, brake platform 2 is lifted certain altitude by control system controlled loading lifting device, brake platform 2 is elevated by the tested axle of tested vehicle is also corresponding while elevating, the axle weight of tested axle is increased by axle load transfer, carry out the load condition of this detection axis when simulated automotive loads.Then control system sends instruction starter motor, rotate through the speed reduction unit 3 rear drive drive roll 11 that slows down, drive roll 11 drives follower rollers 12 to rotate, drive roll 11 and follower rollers 12 further band motor car wheel at the uniform velocity rotate, then, control system prompting driver steps on brake pedal, and wheel reduces speed now under the friction force of detent.The cylinder now driven by motor and speed reduction unit 3 is also at the uniform velocity rotating according to the speed before wheel decelerates, therefore a driving force contrary with damping force direction is produced to the tangential direction of the tire periphery of wheel, continue to rotate to maintain wheel, meanwhile, wheel tyre produces an equal-sized reacting force contrary to this driving force direction to cylinder surface tangential direction, under this reaction force acts, speed reduction unit 3 shell be connected with cylinder together with dynamometry lever towards the backswing of cylinder rotation direction, the force cell of dynamometry lever one end is stressed, export the electric signal be in proportion with damping force, after control system amplification filtering, change into digital signal printout.On the other hand, the 3rd cylinder 4 contacts with wheel, and rotating speed equals the rotating speed of wheel in real time; the tach signal of the 3rd cylinder 4 is input in control system, in test, when the slip rate between wheel and cylinder drops to 25%; control system accessory drive is shut down, and is completed.Slip rate refers to the ratio stepping on value that brake pedal rear wheel rotating speed declines and the tachometer value of wheel when not stepping on brake pedal.Wherein, the value that vehicle wheel rotational speed declines equals the rotating speed that drum rotation speed deducts the 3rd cylinder, and the rotating speed not stepping on wheel during brake pedal equals drum rotation speed.
In a kind of preferred embodiment of the utility model, also comprise the optoelectronic switch 7 that puts in place being arranged on cylinder group 1 side, this optoelectronic switch 7 that puts in place detects that wheel can be issued to bit instruction to control system after entering cylinder group 1.
The testing process of the automobile brake perfrmance pick-up unit adopting the utility model to provide is:
First by the information (license plate number of tested vehicle, detect classification, type of vehicle, the number of axle etc.) typing control system, detection control pattern is entered after completing, control system enters vehicle monitoring state automatically, tested vehicle is according to prompting, honest traveling placed in the middle, wheel is placed between drive roll 11 and follower rollers 12, variator is placed in neutral, vehicle tyre blocks the optoelectronic switch 7 that puts in place, display screen prompting vehicle puts in place, load lifting device and brake platform 2 is lifted certain altitude, starter motor after brake platform 2 lifting puts in place, start to sample after 2s and keep enough sampling times (general 3 ~ 5s), measure the mean value of sampling process as drag, checker by display screen instruction brake pedal floored gradually or steps on braking ability inspection time the brake pedal force that specifies, record a left side, right wheel braking force increases numerical value and the left side of overall process, right wheel maximum braking force, and the axle weight measured after lifting loading, test each axletree successively, to parking braking axle, handle parking brake control device, record parking braking power numerical value.Calculate the braking ratio of each axletree, left and right wheels damping force difference number percent, car load braking ratio, parking braking power number percent.
The automobile brake perfrmance pick-up unit that the utility model provides, by loading lifting device, the tested axle of tested vehicle is elevated, increased the axle weight of tested axle by axle load transfer, carry out the load condition of this detection axis when simulated automotive loads, the loading braking ability of each axletree can be measured successively.Through test of many times, the automobile brake perfrmance pick-up unit that the utility model provides, can to multiaxis lorry and and fill axle trailer carry out lifting load braking performance test, detect the maximum braking force of automobile truly, detection efficiency is high, adds vehicle driving safety coefficient.
Particularly, in the utility model, above-mentioned loading lifting mechanism 5 comprises Lifting air sac 51, air-bag base 52 and weighing support 53, Lifting air sac 51 is arranged on air-bag base 52, weighing support 53 is arranged on Lifting air sac 51, weighing support 53 is connected with brake platform 2, and LOAD CELLS is arranged on weighing support 53.
In drive unit, the output shaft of speed reduction unit 3 is coaxially connected with drive roll 11, and drive roll 11 is connected by Chain conveyer with follower rollers 12.
In order to optimize above-mentioned technique effect further, in the utility model, also comprise the discrepancy car lifting mechanism 6 be arranged between drive roll 11 and follower rollers 12, the lifting flat board 62 that car lifting mechanism 6 of coming in and going out comprises lifting jack 61 and is arranged on lifting jack 61.When cylinder group 1 come in and gone out by automobile, lifting flat board 62 lifts by lifting jack 61, is convenient to automobile and sails into and roll cylinder group 1 away from.Further, also comprise be arranged on brake platform 2 side enter car corbel back slab 8, be convenient to automobile and reach brake platform 2.
In the utility model, the two ends of drive roll 11 and follower rollers 12 are supported on brake platform 2 with roller bearings and bearing seat respectively.
Apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.

Claims (7)

1. an automobile brake perfrmance pick-up unit, is characterized in that, comprising:
Cylinder group (1), described cylinder group (1) is two, is disposed in parallel on brake platform (2); Each described cylinder group (1) comprises drive roll (11) and follower rollers (12), described drive roll (11) and follower rollers (12) be arranged in parallel, and two wheels on the tested axle of automobile can lay respectively between the drive roll (11) of two cylinder group (1) and follower rollers (12);
Drive unit, the speed reduction unit (3) that described drive unit comprises motor and is connected with described motor, described speed reduction unit (3) is connected with described drive roll (11), for driving described drive roll (11) to rotate, described drive roll (11) can drive described follower rollers (12) to rotate;
3rd cylinder (4), described 3rd cylinder (4) is two, is separately positioned between each drive roll (11) and follower rollers (12), contacts with described wheel, and the rotating speed of described 3rd cylinder (4) equals the rotating speed of described wheel in real time;
Load lifting mechanism (5); Described loading lifting mechanism (5) is arranged on the both sides of described brake platform (2), for brake platform described in lifting (2), described loading lifting mechanism (5) is provided with LOAD CELLS (50), for the axle weight of tested axle after measuring lifting;
Measurement mechanism, described measurement mechanism comprises dynamometry lever and force cell, and described dynamometry lever one end contacts with described force cell, and the other end is connected with the housing of described speed reduction unit (3), during for measuring described wheel braking, described wheel is passed to the damping force of described speed reduction unit (3); With
Control system, described control system and described drive unit, the 3rd cylinder (4), loads lifting mechanism (5) and is connected with measurement mechanism, goes out corresponding steering order for the collection of signal, calculating and sending.
2. automobile brake perfrmance pick-up unit according to claim 1, it is characterized in that, also comprise the optoelectronic switch that puts in place (7) being arranged on described cylinder group (1) side, described in the optoelectronic switch (7) that puts in place detect that wheel can be issued to bit instruction to control system after entering described cylinder group (1).
3. automobile brake perfrmance pick-up unit according to claim 1, it is characterized in that, described loading lifting mechanism (5) comprises Lifting air sac (51), air-bag base (52) and weighing support (53), described Lifting air sac (51) is arranged on described air-bag base (52), described weighing support (53) is arranged on described Lifting air sac (51), described weighing support (53) is connected with described brake platform (2), and described LOAD CELLS (50) is arranged on described weighing support (53).
4. automobile brake perfrmance pick-up unit according to claim 1, is characterized in that, the output shaft of described speed reduction unit (3) is coaxially connected with described drive roll (11), and described drive roll (11) is connected by Chain conveyer with described follower rollers (12).
5. automobile brake perfrmance pick-up unit according to claim 1, it is characterized in that, also comprise the discrepancy car lifting mechanism (6) be arranged between described drive roll (11) and follower rollers (12), described discrepancy car lifting mechanism (6) comprises lifting jack (61) and is arranged on the lifting flat board (62) on described lifting jack (61).
6. automobile brake perfrmance pick-up unit according to claim 1, is characterized in that, described drive roll (11) is supported on described brake platform (2) with roller bearings and bearing seat respectively with the two ends of described follower rollers (12).
7. automobile brake perfrmance pick-up unit according to claim 1, is characterized in that, also comprise be arranged on described brake platform (2) side enter car corbel back slab (8).
CN201520206947.8U 2015-04-03 2015-04-03 A kind of automobile brake perfrmance pick-up unit Active CN204495568U (en)

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Application Number Priority Date Filing Date Title
CN201520206947.8U CN204495568U (en) 2015-04-03 2015-04-03 A kind of automobile brake perfrmance pick-up unit

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105181347A (en) * 2015-08-28 2015-12-23 石家庄华燕交通科技有限公司 ABS brake detection platform of novel passenger vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105181347A (en) * 2015-08-28 2015-12-23 石家庄华燕交通科技有限公司 ABS brake detection platform of novel passenger vehicle

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