CN102175464B - It is automatically adjusted the inertia-type Vehicles Brake Test Bench of rotation function - Google Patents
It is automatically adjusted the inertia-type Vehicles Brake Test Bench of rotation function Download PDFInfo
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- CN102175464B CN102175464B CN201110036912.0A CN201110036912A CN102175464B CN 102175464 B CN102175464 B CN 102175464B CN 201110036912 A CN201110036912 A CN 201110036912A CN 102175464 B CN102175464 B CN 102175464B
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Abstract
A kind of inertia-type Vehicles Brake Test Bench being automatically adjusted rotation function, it is placed with motor in the middle of stand frame, motor connects line shaft by belt pulley, line shaft two ends connect left master rotor and one end of right master rotor by claw-type clutch symmetry respectively, the other end of left and right master rotor passes through sprocket wheel chain parallel auxiliary connection cylinder, the coaxially connected encoder of travelling gear is passed through in the end of master rotor, and travelling gear connects Retarder through gear engagement simultaneously.The invention has the beneficial effects as follows: the reflection automobile true to nature braking procedure (including abs braking) on road, testing result is the most credible, and equipment one-machine-multi-function, cost performance are high, and promotion prospect is good.
Description
Technical field
The present invention relates to a kind of inspection equipment checking automobile automatic performance, particularly relate to a kind of inertia-type Vehicles Brake Test Bench being automatically adjusted rotation function.
Background technology
Automobile brake is by automobile traveling kinetic energy on road, is changed into heat consumption through the friction of brake inside
Falling, travel kinetic energy and run out of, automobile the most just stops.
At present, domestic to commonly use anti-force type automobile brake test bed, checks the braking ability of vehicle in use in the way of measuring brake force.Being limited by principle, structure, the drum rotation speed of anti-force type brake platform is very slow, is equivalent to about speed 3km/h, and its braking procedure and the automobile damped condition on road differs greatly.Present most of automobile has ABS to brake (anti-lock) function, the minimum speed that ABS system works must be at more than 10km/h, this means that anti-force type brake platform cannot check the automobile that ABS brakes, its existence is because can not find alternate device and conduct is furnished.For changing an angle, all vehicles in use with ABS braking, its braking ability cannot judge, there is great potential safety hazard.
The drum rotation speed of inertia-type brake test bench can be close to 100km/h, and braking procedure and automobile are braked closely on road, can check the automobile that ABS brakes.Its inspection principle is: automobile is parked on inspection stand, and the vehicle wheel rotation of motor-driven drum having electrical automobile, the cylinder of rotation is equivalent to the road surface of movement, for simulated automotive transport condition on road.During automobile brake, what brake was consumed is the rotation function of cylinder.Under conditions of speed is identical, if the rotation function of cylinder is just equal with automobile traveling kinetic energy on road, then the assay of stand braking, is consistent with the braking effect on road.
But, the rotation function of cylinder, under specific rotating speed (speed), depend on the rotary inertia of all rotating mechanisms rotated with cylinder, rotary inertia is usually constant, and vehicle weight then varies, and has both used same speed, travels kinetic energy the most different.Therefore, unalterable rotary inertia cannot simulate the running car kinetic energy of Different Weight, this just inertia-type Vehicles Brake Test Bench be difficult to the reason promoted always.Solve this problem and have two kinds of methods:
1, flywheel group is increased to cylinder.Flywheel group has the flywheel that many varies in size, and according to the weighing results to automobile, connects different flywheels to cylinder, changes rotary inertia and makes rotation function the most equal with travelling kinetic energy.This method to fly wheel group structure the hugest, complicated, its cost is several times as much as testing stand itself, but also is manual switching flywheel, and to automatically switch, cost to be also greatly increased.
2, computer modified survey result.This method does not change the rotary inertia of cylinder, do not require that rotation function is equal with travelling kinetic energy, but according to the weighing results to automobile, by computer, the braking distance in assay is carried out data correction, rationale is: rotation function × conversion coefficient=traveling kinetic energy, conversion coefficient depends primarily on weighing results, then have: stand braking distance × conversion coefficient=road braking distance.The method is without flywheel, and cost is relatively low, and inspection braking distance is more credible.Other brake inspection project such as braking deceleration, brake coordination time, the stand assay of brake duration can not carry out data correction with conversion coefficient, thus have certain error.
Summary of the invention
Object of the present invention is to provide a kind of inertia-type Vehicles Brake Test Bench being automatically adjusted rotation function, this Vehicles Brake Test Bench uses computer to control Retarder absorption kinetic energy, is automatically adjusted the inertia-type Vehicles Brake Test Bench of rotation function.
The technical solution adopted for the present invention to solve the technical problems is: can automatically claim the weight of automobile on stand, the cylinder of left and right symmetry respectively connects the Retarder of a band flywheel, the total rotation function of stand is very big, equal with the traveling kinetic energy allowing carrying maximum allowable axle load automobile.The relational expression of this check-out console offer rotation function is: stand total rotation function Retarder absorbs kinetic energy=running car kinetic energy.Owing to the total rotation function of stand is datum, running car kinetic energy is also datum after automobile is weighed, therefore, kinetic energy and the control corresponding Retarder loading current (exciting current) of generation that Retarder should absorb can be calculated by computer, with the stand rotation function that the traveling kinetic energy obtained and the most coaxially weigh automobile is equal, make brake inspection the most credible.
Retarder is a kind of motor special absorbed and measure kinetic energy (output), is generally used for chassis dynamometer, and the floating stator by rotor with magnet exciting coil and ring of eddy is constituted, and stator can be around the axis oscillating of rotor.To the logical upper unidirectional current of stator coil during loading, stator will produce the moment of resistance to the rotation of rotor.For the cylinder being connected for same rotor and wheel, this moment of resistance is exactly loading moment, absorbs its kinetic energy and is changed into heat and consumes.
The present invention is realized in, computer controls Retarder and absorbs kinetic energy, it is automatically adjusted the inertia-type Vehicles Brake Test Bench of rotation function, Weighing mechanism and LOAD CELLS is had on stand, controlled automatically to claim the weight of automobile by computer, according to weighing results, computer is pressed mathematical model stand total rotation function Retarder and is absorbed kinetic energy=running car kinetic energy, the total rotation function of stand is datum, running car kinetic energy is also datum after automobile is weighed, calculate automobile travels the kinetic energy that kinetic energy and Retarder should absorb, and control variable DC power supply to the Retarder magnet exciting coil corresponding loading current of offer, thus obtain the rotation function required for various automobile.
nullConcrete structure of the present invention is: it includes stand frame、Motor、Belt pulley、Line shaft、Claw-type clutch、Master rotor、Sprocket wheel chain、Auxiliary cylinder、Travelling gear、Retarder、Flywheel、Measuring arm of force、Force cell、Weighing frame、Weighing platform equipped with steel ball、LOAD CELLS、Jack、Lifting beam、Reduction gearing、Lifting shaft、Shaft coupling、Electromagnetism shift fork、Pull bar、3rd cylinder、Brake arm、Photoelectric counter、Capture card、Control station,It is placed with motor in the middle of stand frame，Motor connects line shaft by belt pulley，Line shaft two ends connect left master rotor and one end of right master rotor by claw-type clutch symmetry respectively，Left、The other end of right master rotor passes through sprocket wheel chain parallel auxiliary connection cylinder，It is characterized in that the end of master rotor is by the coaxially connected encoder of travelling gear，Travelling gear connects Retarder through gear engagement simultaneously，Retarder be respectively provided on two sides with flywheel，Equipped with measuring arm of force on the stator case of Retarder，Measuring arm of force connects force cell，Weighing frame it is provided with between master rotor and auxiliary cylinder，The back side, both sides of weighing frame is placed with the weighing platform equipped with steel ball，The center of weighing platform is connected with LOAD CELLS，LOAD CELLS connects jack，The both sides, top of jack are connected with lifting beam respectively，The sidewall bottom of jack is connected with reduction gearing，Reduction gearing engagement connects lifting shaft，Left、Right two symmetrical lifting shafts pass sequentially through shaft coupling and claw-type clutch connects，Electromagnetism shift fork it is connected with on claw-type clutch，Electromagnetism shift fork cylinder lever connecting rod，The 3rd cylinder it is provided with in weighing frame，It is respectively equipped with brake arm bottom the two ends of auxiliary cylinder，Brake arm connects lifting beam by welded chain，The end of the 3rd cylinder is provided with photoelectric counter，The converter of motor and Retarder connect the capture card in control station respectively，Motor、Retarder、Electromagnetism shift fork、Encoder、Force cell、LOAD CELLS and photoelectric counter all line control stations.
The invention has the beneficial effects as follows: control station controls Retarder and absorbs kinetic energy, the technology of regulation rotation function is used on inertia-type Vehicles Brake Test Bench, solve the domestic inspection plant issue not having vehicle in use ABS to brake before this, it is possible to the reflection automobile true to nature braking procedure on road.In addition, the present invention also has both check-out console of weighing, speedometer inspection table, chassis dynamometer and the function of inspection vehicle transmission system resistance, equipment one-machine-multi-function, and assay is the most credible and meets relative national standards, equipment takes up an area less, cost performance is high, and therefore promotion prospect is fine.
Accompanying drawing explanation
Fig. 1 is the front view of the present invention.
Fig. 2 is the plane graph of the present invention.
Fig. 3 is power and the drive mechanism side view of the present invention.
Fig. 4 is the lifting of the present invention, Weighing mechanism side view.
In the drawings 1, master rotor 2, auxiliary cylinder 3, Retarder 4, flywheel 5, travelling gear 6, sprocket wheel chain 7, motor 8, motor cabinet 9, small belt pulley 10, big belt pulley 11, line shaft 12, claw-type clutch 13, electromagnetism shift fork 14, pull bar 15, bearing block 16, measuring arm of force 17, force cell 18, encoder 19, 3rd cylinder 20, photoelectric counter 21, screw jack 22, reduction gearing 23, lifting shaft 24, lifting beam 25, LOAD CELLS 26, weigh grid beam 27, vertical gear wheel 28, gantry beams 29, stand frame 30, shaft coupling 31, gear wheel hole 32, brake arm.
Detailed description of the invention
The present invention is made up of stand frame, power and drive mechanism, cylinder group, Retarder and flywheel, lifting mechanism, the 3rd cylinder mechanism, Weighing mechanism and control station.
1, stand framework: be bent into by steel plate between two parallel stand frames 29 of flute profile, is welded with 8 channel-section steel gantry beams 28, and overall as the ladder kept flat, all mechanisms in addition to control station are all arranged in framework.
2, power and drive mechanism: motor 7 is fixed on motor cabinet 8, the position of motor cabinet 8 can front and back regulate, power is passed to big belt pulley 10 and line shaft 11 by small belt pulley 9 through belt, the shift fork that line shaft 11 two ends drive equipped with claw-type clutch 12 and electromagnetism shift fork 13(electric magnet), pull bar 14, for the combination between line shaft 11 with master rotor 1 or separate, the claw-type clutch 12 on the right is equipped with sprocket wheel, by chain power passed to another on lifting shaft 23 equipped with the claw-type clutch 12 of sprocket wheel, this clutch is used for the combination of sprocket wheel and lifting shaft 23 or separates.
null3、Cylinder group: left、The cylinder of each two the parallel installations of right symmetry，Wherein be positioned at is above auxiliary cylinder 2，Below for master rotor 1，Main、Sprocket wheel chain 6 is had to link between auxiliary cylinder，Additionally，The axle of master rotor 1 the inner is equipped with claw-type clutch 12，The axle of outer end is connected with Retarder 3 through travelling gear 5，And it is coaxially connected with encoder 18，Diameter of cylinder 318.3mm，Girth 1000mm，Encoder 18 each rotation produces 600 pulses，Each pulse represents 1.66666mm，The speed for there being a decimal can be directly read every sampling in 0.06 second umber of pulse once，If speed 50.0km/h is 13888.88mm/s，Then 13888.88/1.66666 × 0.06=500，If an arithmetic point is 50.0.
4, Retarder and flywheel: the left and right each Retarder 3 of stand, the axle of its inner is connected through the axle of travelling gear 5 with master rotor 1, the axially symmetric of Retarder 3 respectively fills a flywheel 4, this structure had both equalized axle load, alleviate again the weight of single flywheel and be easily installed, equipped with measuring arm of force 16 on the stator case of Retarder 3, form dynamometry (moment of torsion) mechanism with the force cell 17 being arranged on stand frame 29.It is 60kw that axle weighs every Retarder of 3 tonnes of other stands, and each flywheel is Φ 580 × 61mm；Axle weighs 10 tonnes of other stands, every Retarder 160kw, and each flywheel is Φ 700 × 128mm.
5, lifting mechanism: this mechanism is between major and minor cylinder, left and right each lifting beam 24, the lower section of beam is respectively arranged with 2 screw jack 21, by weighing, grid beam 26 drives through reduction gearing 22, left and right totally 4 screw jack 21 arrangements in alignment, left and right lifting shaft 23 is coaxial and connects with shaft coupling 30.
Lifting shaft 23 is overlapped by another claw-type clutch 12 in stand middle section, and its fixing sleeve is integrated with the interior chain wheel sleeve having bearing, and sliding sleeve is then connected with lifting shaft 23 by lead key.After this claw-type clutch 12 is combined by electromagnetism shift fork 13, line shaft 11 and sprocket wheel chain 6 will drive lifting shaft 23 to rotate.Allow motor 7 forward and backward, lifting mechanism can be made to rise or fall.
Under left and right lifting beam 24, all having a lifting welded chain to play the stage casing of brake arm 32 of horizontal, one of brake arm 32 porose, is enclosed within the straight pin of support, and other end has filled brake shoe link and has been positioned at the lower section of auxiliary cylinder 2.When lifting beam 24 rises to highest order, meeting pull-up welded chain and brake arm 32 have this head of brake shoe link, make brake shoe link upwards hold auxiliary cylinder 2 tightly, so, will not trackslip when automotive wheel is by cylinder.
6, the 3rd cylinder mechanism: in the 3rd cylinder 19 parallel bisector between major and minor cylinder, diameter only has 59mm, rotary inertia is minimum, owing to being integrated with elastic force upwards, can abut against under tire and follow rotation, the difference of the accumulative girth that its accumulative girth rotated rotates with cylinder, it is simply that drawing brakes distance, this is one of important indicator evaluating ABS braking ability.
3rd cylinder 19 and support are arranged on lifting beam 24, are surrounded with the shaped as frame of the grid beam 26 of weighing on lifting beam 24.At ordinary times, the 3rd cylinder is under the effect of upwards elastic force, higher than weighing grid beam about 25mm.Weighing in grid beam 26 when automotive wheel is pressed in, and when being forced down by the 3rd cylinder 19, can touch location switch and send signal, the wheel representing to be checked has put in place.The axle of the 3rd cylinder 19 outer end represents, equipped with photoelectric counter, the quantity of its output pulse, the accumulative girth rotated.
7, Weighing mechanism: the top at left and right lifting beam 24 two is each fixes a LOAD CELLS 25, LOAD CELLS 25 above is the grid beam 26 of weighing of steel ball power transmission, LOAD CELLS 25 is made to be solely subjected to vertical gravity with steel ball power transmission, and there is no the component in other direction, to ensure to weigh accurately.
8, control station: control station and stand are separate, between be connected by electric wire, cable, in addition to each sensor, electrical equipment and switch on stand, other electrical equipment, circuit and components and parts are all arranged in the cabinet of control station, variable DC power supply, electromagnetism shift fork power source special, various amplifying circuit and the control circuit etc. loaded including computer, usb data capture card, the converter of motor speed adjusting, Retarder.The above of cabinet puts display, operation keyboard, mouse, printer.
8.1, USB data collecting card is used for the sampling of signal, process, and wherein simulation input has 4 LOAD CELLSs, the load cell signal of 2 Retarders；Numeral input has the encoder of 2 master rotors, the photoelectric counter signal of 2 the 3rd cylinders；Level input has 3 switching signals.Capture card also has 2 tunnel outputs, controls converter and the variable DC power supply loaded to Retarder respectively.
8.2, there are 4 operated keys on control station panel, are respectively rising, decline, ON, OFF key.
The elevating movement of lifting mechanism is by rising, declining key control, in addition to controlling motor 7 forward and backward, the effect of remaining aspect the two key is identical: press & hold, claw-type clutch 12 on lifting shaft 23 is energized combined because of electromagnetism shift fork 13, converter is energized simultaneously and starts to be gradually increased output frequency from 1HZ, motor 7 is made slowly to start (being easy to claw-type clutch 12 combine), regulation rotating speed is accelerated to through 4 seconds, unclamping button then electromagnetism shift fork 13 and converter power-off simultaneously, elevating movement stops the most immediately.
The operating of cylinder, stopping are by ON and OFF key control.Pressing ON key, 2 claw-type clutch 12 of line shaft 11 are energized combined because of electromagnetism shift fork 13, and converter is energized simultaneously and starts to be gradually increased output frequency from IHZ, make motor 7 slowly start through 16 seconds and accelerate to regulation rotating speed (speed).ON key unclamps again after pressing and remains powered in the same old way, only presses OFF key and remote switch just can power-off.
9.1, vertical gear wheel 27 is the doffer stood, it is arranged in the groove of the channel steel upright post outside the 3rd cylinder 19 two ends, channel steel upright post is welded in gantry beams 28, and when the effect of vertical gear wheel 27 is to prevent cylinder from rotating, wheel produces left and right sliding on cylinder and skids off cylinder.
9.2, the present invention has both the function of chassis dynamometer, during measurement of power, wheel easily on cylinder left and right sliding and affect inspection and safety, in gear wheel hole 31, therefore to insert the spacing gear wheel of wheel (doffer).
9.3, there is ventilation and protection net the top of Retarder and flywheel, has protective cover above the power of stand central authorities and drive mechanism.
9.4, during inspection automobile brake, will press from both sides a remote switch on automobile brake pedal, as long as having stepped on pedal, remote switch is switched on, and its signal send capture card.
9.5, as there being the Vehicle Inspection equipment of cylinder, the present invention has only to utilize a portion mechanism, so that it may use as chassis dynamometer, speedometer inspection table.Therefore, the present invention has both the function of these equipment, reduces waste real genus.
The inspection project of check-out console has:
Brake hard, some braking, parking braking, slide and speedometer, Chassis dynamometer, transmission resistance and automatically claim wheel load, axle heavily, car weight.
The specific works process of check-out console is as follows: (as a example by front-wheel brake hard is checked)
At ordinary times, lifting mechanism is highest order state, and grid beam of weighing 26 is contour with cylinder, and auxiliary cylinder 2 is braked hoof plate and embraces, and three set claw-type clutch 12 are all in released state, and the 3rd cylinder 19 exceeds the grid beam about 25mm that weighs.
Press when weighing grid beam 26 for vehicle front, the 3rd cylinder 19 has been depressed, touches location switch and sends the signal that puts in place, makes computer while prompting is stopped, controls two front-wheel automatic Weighings (two wheel load sums are axle weight).After weighing, display transfers key frame automatically to, now can log in motor car number, wheelbase, these data of wheel diameter and select required inspection project and front and rear wheel.
Log in and after option, i.e. enter this object program and picture, inspection can be started.
First press decline key, claw-type clutch 12 on lifting shaft 23 combines, it is rotated by line shaft 11 and sprocket wheel chain 6, the run-in synchronism of 4 screw jack 21 is driven through reduction gearing 22, the front-wheel weighing on grid beam 26 and beam is made to decline, brake arm 32 is the most sagging a little, makes brake shoe link disengage with auxiliary cylinder 2.When front-wheel drops to be less than about 15mm bottom front-wheel by idler and grid beam 26 of weighing, another limit switch on the 3rd cylinder 19 is touched, and automatically cuts off decline circuit and makes grid beam 26 stopping decline of weighing.Unclamp decline key.
Remote switch is clipped in above automobile brake pedal, press ON key, two claw-type clutch 12 on line shaft 11 combine, inverter control motor 7 slowly starts, driving the 3rd cylinder 19 under cylinder, wheel, Retarder 3 and flywheel 4, front-wheel to ramp up, display shows speed always.Being maintained for this frequency when converter output reaches 50HZ, speed now stabilizes to 55km/h.
Pressing OFF key, converter and motor 7 power-off, cylinder, flywheel run out of steam but have the biggest inertia, freely slow down together with wheel, when being decelerated to 50km/h, display sends out a warning prompting, and automobile brake pedal one foot is floored rapidly enforcement brake hard by operator.
Just stepped on moment at brake pedal, be clipped in the action of the remote switch above pedal, on the one hand control two claw-type clutch 12 and be immediately disconnected, and rapidly variable power supply is connected the magnet exciting coil of Retarder 3；On the other hand produce brake signal and give capture card and computer.Whole braking procedure about 1 second, speed is reduced to zero i.e. test ending by 50km/h, display transfers key frame automatically to, brake inspection result screen can be entered, it can be seen that herein below: braking distance, braking rolling distance, drawing brakes distance, braking deceleration, brake coordination time, brake duration, wheel load, axle weight, car weight and the braking deceleration curve chart of each wheel by key frame.
If inspection does not has the automobile that ABS brakes in early days, braking distance (the accumulative girth that cylinder rotates) in brake inspection result can significantly greater than brake rolling distance (the accumulative girth that the 3rd cylinder rotates), this is because wheel stops because of lock of controller, 3rd cylinder inertia is minimum to be stopped the most simultaneously, and cylinder and flywheel there remains the biggest inertia, be enough to overcome and be rotated further with the friction of tire, just can stop along with inertia reduces after a while, thus form obvious drawing brakes distance (drawing brakes distance=braking distance braking rolling distance).
And now with the automobile of ABS braking, kinetic energy is consumed by brake entirely, during braking, wheel will not locking, kinetic energy consumption is over, wheel also stops, the accumulative girth difference that cylinder and the 3rd cylinder rotate is the least, that is braking distance is of substantially equal with braking rolling distance, and drawing brakes distance is then close to zero.
Front-wheel brake hard test ending, can be by lifting key, and grid beam of weighing 26 rises to highest order and can touch limit switch and automatically stop, simultaneously pull-up brake arm 32, makes brake shoe link embrace auxiliary cylinder 2, it is simple to front-wheel sails out of stand.The process of trailing wheel brake hard inspection is identical with front-wheel.The process of some brake inspection with unique difference of brake hard is: operator's point steps on brake pedal and unclamps immediately, allows speed be obviously reduced.
Claims (1)
- null1. the inertia-type Vehicles Brake Test Bench being automatically adjusted rotation function，Controlled Retarder by computer and absorb kinetic energy，It is automatically adjusted the inertia-type Vehicles Brake Test Bench of rotation function，Weighing mechanism and LOAD CELLS is had on stand，Controlled automatically to claim the weight of automobile by computer，According to weighing results，Computer is pressed mathematical model stand total rotation function one Retarder and is absorbed kinetic energy=running car kinetic energy，The total rotation function of stand is datum，Running car kinetic energy is also datum after automobile is weighed，Calculate automobile travels the kinetic energy that kinetic energy and Retarder should absorb，And control variable DC power supply to the Retarder magnet exciting coil corresponding loading current of offer，Thus obtain the rotation function required for various automobile，It is characterized in that concrete structure is: it includes stand frame、Motor、Belt pulley、Line shaft、Claw-type clutch、Master rotor、Sprocket wheel chain、Auxiliary cylinder、Travelling gear、Retarder、Flywheel、Measuring arm of force、Force cell and weighing frame、Weighing platform equipped with steel ball、LOAD CELLS、Jack、Lifting beam、Reduction gearing、Lifting shaft、Shaft coupling、Electromagnetism shift fork、Pull bar、3rd cylinder、Brake arm、Photoelectric counter、Capture card and control station，It is placed with motor in the middle of stand frame，Motor connects line shaft by belt pulley，Line shaft two ends connect left master rotor and one end of right master rotor by claw-type clutch symmetry respectively，Left、The other end of right master rotor passes through sprocket wheel chain parallel auxiliary connection cylinder，The coaxially connected encoder of travelling gear is passed through in the end of master rotor，Travelling gear connects Retarder through gear engagement simultaneously，Retarder be respectively provided on two sides with flywheel，Equipped with measuring arm of force on the stator case of Retarder，Measuring arm of force connects force cell，Weighing frame it is provided with between master rotor and auxiliary cylinder，The back side, both sides of weighing frame is placed with the weighing platform equipped with steel ball，The center of weighing platform is connected with LOAD CELLS，LOAD CELLS connects jack，The both sides, top of jack are connected with lifting beam respectively，The sidewall bottom of jack is connected with reduction gearing，Reduction gearing engagement connects lifting shaft，Left、Right two symmetrical lifting shafts pass sequentially through shaft coupling and claw-type clutch connects，Electromagnetism shift fork it is connected with on claw-type clutch，Electromagnetism shift fork cylinder lever connecting rod，The 3rd cylinder it is provided with in weighing frame，It is respectively equipped with brake arm bottom the two ends of auxiliary cylinder，Brake arm connects lifting beam by welded chain，The end of the 3rd cylinder is provided with photoelectric counter，The converter of motor and Retarder connect the capture card in control station respectively，Motor、Retarder、Electromagnetism shift fork、Encoder、Force cell、LOAD CELLS and photoelectric counter all line control stations.
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| CN103323262B (en) * | 2013-06-27 | 2016-05-11 | 林武 | Automatically become the automobile inertial formula brake test bench of flywheel |
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