CN107860588A - Inertia roller beds Examining Method of Automobile Brake Capability - Google Patents
Inertia roller beds Examining Method of Automobile Brake Capability Download PDFInfo
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- CN107860588A CN107860588A CN201711094982.5A CN201711094982A CN107860588A CN 107860588 A CN107860588 A CN 107860588A CN 201711094982 A CN201711094982 A CN 201711094982A CN 107860588 A CN107860588 A CN 107860588A
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- wheel
- speed
- brake
- resistance
- roller
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/0072—Wheeled or endless-tracked vehicles the wheels of the vehicle co-operating with rotatable rolls
- G01M17/0074—Details, e.g. roller construction, vehicle restraining devices
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Braking Arrangements (AREA)
- Regulating Braking Force (AREA)
Abstract
Inertia roller beds Examining Method of Automobile Brake Capability, known equivalent inertia M and resistance fi and wheel equivalent inertia G per side platform frame, when detecting non-driven wheel, powered off after motor frequency conversion driving drum to suitable speed, measure the speed in the stand roller moderating process of left and right and time, each speed point deceleration and SR of two stands are calculated respectively, it is Wheel resistance to subtract fi, when detecting drive shaft, driven without motor, bottom gear driving drum accelerator releasing to after providing speed hangs neutral, and Wheel resistance is similarly measured with non-driven wheel；Then treat that speed drops to the prompting of regulation speed and steps on foot brake, service braking pedal is floored, measure speed and the time of left and right stand roller synchronization, each speed point deceleration and system row cart brake force are calculated respectively, it is wheel brake power to subtract fi, when the slip rate of any side stand is more than or equal to regulation slip rate, driver loosens the brake by prompting, similarly measures wheel parking brake force.
Description
Technical field
Inertia roller beds Examining Method of Automobile Brake Capability, be automobile in the roller beds equipped with inertial flywheel, with
The equivalent inertia of stand and automobile is loading load, the method for detecting automobile brake perfrmance, belongs to car consumption credit method
Technical field.
Background technology
The braking ability of existing automobile, dynamic property, quality, speedometer detection, be respectively brake platform, chassis dynamometer,
Detected on Platform balance for shaft weight, speed platform, detection device is more, and occupied ground is big, price, suitable for the more automotive check of detection vehicle
Stand, but be not suitable for the quality inspection that the less vehicle complete maintenance of Auto repair shop is completed.In easy inertia roller beds
Dynamic property, quality, speedometer a tractor serves several purposes, it is further added by detecting braking ability, is greatly improved cost performance.
The content of the invention
Inertia roller beds Examining Method of Automobile Brake Capability, it is the detection automobile brake perfrmance in inertia roller beds
Method, the structure of inertia roller beds is similar with existing anti-force type drum braking platform structure division, mainly there is following parts group
Into：Left and right horse structure is symmetrically the same, on same body, has two rollers per side platform frame, front roll leads to back roll
Cross the joint transmission of Chain conveyer 1: 1；Speed probe is installed on the axle of roller the inner, measurement cylinder linear resonance surface velocity, sampled left and right
The automobile's instant velocity of stand sensor synchronization；Speed changer is installed on the axle of roller outer end, using roller shaft end as input, become
Fast device is raising speed, and transmission output couples one end of inertial flywheel, and raising speed can reduce flywheel dimension, and the equivalent for improving flywheel is used to
Amount；The other end connection one of flywheel is counter to drag motor, when non-driven wheel detection brake force, variable-frequency motor driving flywheel, becomes
Power off after fast device, roller, vehicle wheel rotation to certain speed, during drive shaft wheel detection brake force, drag without motor is counter；Two rollers
Centre is mounted below weighing sensor equipped with a lifting supporting plate, supporting plate, and supporting plate is in lifting shape before wheel drives into stand
State, wheel weight and axle weight are weighed up when wheel stops being scheduled on supporting plate, then supporting plate drops to bottom detection braking ability, after having detected
Supporting plate rises, and vehicle rolls stand away from；Less 3rd roller of a diameter and speed probe are also equipped among two rollers, works as inspection
When surveying braking ability, the 3rd roller is pressed in measurement wheel surface vehicle velocity V 1, the roller speed V2 of synchronization on wheel, calculates same
Slip rate δ=(V1-V2)/V2, δ of the opposing roller vehicle velocity V 2 of one moment wheel surface vehicle velocity V 1 selects in (0.1~0.6) scope
Select, when any side bench detection slip rate is more than δ, control send wheel will locking alarm, driver's pine driving system
Dynamic pedal, in order to avoid major injury wheel surface；The resistance fi of unilateral platform system equivalent inertia M and each speed point is known solid
Definite value, detection axletree tumbler equivalent inertia are mainly the equivalent inertia G of wheel, can try measurement by platform or count various cars
The vehicle wheel rotation part equivalent inertia of type and the functional relation of wheel diameter, units/kg, G can be calculated according to wheel diameter and quantity.
Inertia roller beds Examining Method of Automobile Brake Capability, be using the equivalent inertia of stand and automobile as loading load,
Detect a kind of method of automobile brake perfrmance, it is characterised in that：Known equivalent inertia M and each speed point resistance per side platform frame
Ffi and vehicle wheel rotation part equivalent inertia G, non-driven wheel stop being scheduled on supporting plate, weigh up wheel quality rear supporting plate and decline, motor becomes
Powered off after frequency driving drum and vehicle wheel rotation to suitable speed, roller slows down under SR effect, measurement left and right stand rolling
The speed of cylinder synchronization and time, deceleration Ji and SR Ji × (M+G) of each speed point of two stands are calculated respectively,
The Frame resistance fi for subtracting identical speed point is Wheel resistance, when detecting drive shaft, is driven without motor, bottom gear driving
Roller accelerator releasing to after providing speed hangs neutral, and Wheel resistance is similarly measured with non-driven wheel；Then treat that speed drops to
Regulation speed prompting step on foot brake, service braking pedal is floored, measure left and right stand roller synchronization speed and when
Between, each the speed point deceleration Ai and system row cart brake force Ai × (M+G) of left and right stand are calculated respectively, subtract Frame resistance fi
As wheel brake power, when the slip rate of any side stand is more than or equal to regulation slip rate, sending wheel automatically will embrace
Dead alarm, driver's release service braking pedal or quick release and brake pedal unclamp again after coming and going several times
Pedal；Wheel resistance need not be measured during the parking brake force for detecting parking axle, operates parking braking, similarly measuring system parking
Brake force, it is wheel parking brake force to subtract Frame resistance fi；Or ignore G influence setting G=0 and calculate, by standard
Specification, computer automatic sampling calculate blocking wheel rate, braking ratio per axle, axle brake imbalance rate, vehicle braking ratio, parking braking
Rate.
The left and right wheelses brake force of compact car hydraulic braking starts that action time difference is smaller, and brake force rate of rise is larger,
Desirable regulation slip rate less than normal, large car air-pressure brake can use regulation slip rate bigger than normal, and driver quickly unclamps and stepped on
Brake pedal unclamps pedal again after coming and going several times, and another side stand can be avoided not detect maximum wheel brake force.
In order to detect wheel maximum braking force, it is ensured that active braking time, detection time will be relatively larger than wheel braking force
Rise time, the roller in not up to detection wheel maximum braking force is avoided just to stop, the regulation speed of prompting can be solid
Definite value, or can also be determined again by the axle of examined vehicle, axle is again more big then to provide that speed is corresponding higher.Multiaxle trucks detect
When, to avoid wheel from reducing the adhesion weight of roller, stand, which can be fixedly mounted, makes front roll Up Highway UHW be higher than level land.
Embodiment
So that a two axle lorries detect as an example, to illustrate the specific reality of inertia roller beds Examining Method of Automobile Brake Capability
Mode is applied, rear axle is drive shaft and parking axle.
The relevant parameter of examined automobile is inputted computer, it is known that M, fi, G, automobile front axle is sailed to stop determining on lifting supporting plate,
Two stands claim two-wheeled to weigh and obtain front axle weight, and lifting supporting plate drops to bottom, and the 3rd roller is pressed on wheel to be driven by wheel
Rotate, the 3rd roller speed of speed probe measurement is vehicle wheel vehicle speeds, and computer can determine regulation speed again according to axle
And slip rate, or simplify using regulation speed and slip rate as fixed value and axle weight unrelated, motor frequency conversion driving drum and car
Wheel powers off after turning to suitable speed, and suitable speed is typically to provide that speed adds the speed Δ V of Wheel resistance detection, roller
SR effect under slow down, the both sides stand sampling period be 0.01 second, measure both sides stand synchronization speed and when
Between, each speed point deceleration Ji and SR Ji × (M+G) of both sides stand is calculated respectively, subtracts the stand of identical speed point
Resistance fi is Wheel resistance, when speed drops to regulation speed, prompts to step on foot brake, service braking pedal is stepped on
Bottom, speed and the time of left and right stand roller synchronization are measured, calculates each speed point deceleration Ai and system row cart system respectively
Power Ai × (M+G), the Frame resistance fi for subtracting identical speed point is wheel brake power, when any side stand surveys cunning
Shifting rate is more than or equal to regulation slip rate, send automatically wheel will locking alarm, driver loosens the brake or soon
Speed is unclamped and stepped on after pedal comes and goes several times unclamps pedal again, and after braking forces measuring is complete, lifting supporting plate rises to uppermost position in fig-ure, preceding
Wheel rolls stand away from.
It is fixed that trailing wheel stops on lifting supporting plate, claims two-wheeled to weigh and obtain rear axle weight, and lifting supporting plate drops to bottom, without motor
It is counter to drag, after hanging up gear driving drum speed to the suitable speed prompted, neutral art skating is hung, it is then same with preceding shaft detection
Reason, measure Wheel resistance and wheel brake power.Wheel resistance need not be measured during the parking brake force for detecting parking axle,
Parking braking is operated, similarly measuring system parking brake force, it is wheel parking brake force to subtract Frame resistance fi.Or ignore
G influence sets G=0 to calculate, and blocking wheel rate, braking ratio per axle, vehicle system are calculated by standard criterion computer automatic sampling
Dynamic rate, axle brake imbalance rate, parking braking rate.
Inertia roller beds Examining Method of Automobile Brake Capability, detection is quick, can detect dynamic property, weigh, speed
Braking ability is detected in the inertia roller beds of table a tractor serves several purposes, greatly improves the cost performance of equipment.
Claims (1)
1. inertia roller beds Examining Method of Automobile Brake Capability, it is using the equivalent inertia of stand and automobile as loading load, inspection
Survey a kind of method of automobile brake perfrmance, it is characterised in that：Known equivalent inertia M and each speed point resistance Ffi per side platform frame
And vehicle wheel rotation part equivalent inertia G, non-driven wheel stop being scheduled on supporting plate, weigh up wheel quality rear supporting plate and decline, motor frequency conversion
Powered off after driving drum and vehicle wheel rotation to suitable speed, roller slows down under SR effect, measures left and right stand roller
The speed of synchronization and time, deceleration Ji and SR Ji × (M+G) of each speed point of two stands are calculated respectively, is subtracted
The Frame resistance fi for removing identical speed point is Wheel resistance, when detecting drive shaft, is driven without motor, bottom gear driving rolling
Accelerator releasing hangs neutral after cylinder to regulation speed, and Wheel resistance is similarly measured with non-driven wheel；Then treat that speed drops to rule
Determine speed prompting and step on foot brake, service braking pedal is floored, measure speed and the time of left and right stand roller synchronization,
Each the speed point deceleration Ai and system row cart brake force Ai × (M+G) of left and right stand are calculated respectively, subtract Frame resistance fi i.e.
For wheel brake power, when the slip rate of any side stand is more than or equal to regulation slip rate, sending wheel automatically will locking
Alarm, driver unclamp service braking pedal or it is quick unclamp and brake pedal come and go several times after unclamp steps on again
Plate；Wheel resistance need not be measured during the parking brake force for detecting parking axle, operates parking braking, similarly measuring system parking system
Power, it is wheel parking brake force to subtract Frame resistance fi；Or ignore G influence setting G=0 and calculate, by standard gauge
Model, computer automatic sampling calculate blocking wheel rate, braking ratio per axle, axle brake imbalance rate, vehicle braking ratio, parking braking
Rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711094982.5A CN107860588B (en) | 2017-11-03 | 2017-11-03 | Inertia roller beds Examining Method of Automobile Brake Capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711094982.5A CN107860588B (en) | 2017-11-03 | 2017-11-03 | Inertia roller beds Examining Method of Automobile Brake Capability |
Publications (2)
| Publication Number | Publication Date |
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| CN107860588A true CN107860588A (en) | 2018-03-30 |
| CN107860588B CN107860588B (en) | 2019-09-10 |
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| CN201711094982.5A Active CN107860588B (en) | 2017-11-03 | 2017-11-03 | Inertia roller beds Examining Method of Automobile Brake Capability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567735A (en) * | 2019-09-21 | 2019-12-13 | 吴明 | Method for detecting maximum process difference of braking force of automobile test wheel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100264260B1 (en) * | 1995-11-21 | 2000-08-16 | 정몽규 | Regenerating test method and the apparatus for braking energy of vehicles |
| KR20030043090A (en) * | 2001-11-27 | 2003-06-02 | 엘지이노텍 주식회사 | Apparatus for load testing |
| JP2009250649A (en) * | 2008-04-02 | 2009-10-29 | Central Japan Railway Co | Model experiment device for railway vehicle |
| CN102156014A (en) * | 2011-03-10 | 2011-08-17 | 吴明 | Heavy vehicle chassis dynamometer |
| CN106989938A (en) * | 2017-05-05 | 2017-07-28 | 吴明 | Loading and inertia detect vehicle dynamic quality method |
-
2017
- 2017-11-03 CN CN201711094982.5A patent/CN107860588B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100264260B1 (en) * | 1995-11-21 | 2000-08-16 | 정몽규 | Regenerating test method and the apparatus for braking energy of vehicles |
| KR20030043090A (en) * | 2001-11-27 | 2003-06-02 | 엘지이노텍 주식회사 | Apparatus for load testing |
| JP2009250649A (en) * | 2008-04-02 | 2009-10-29 | Central Japan Railway Co | Model experiment device for railway vehicle |
| CN102156014A (en) * | 2011-03-10 | 2011-08-17 | 吴明 | Heavy vehicle chassis dynamometer |
| CN106989938A (en) * | 2017-05-05 | 2017-07-28 | 吴明 | Loading and inertia detect vehicle dynamic quality method |
Non-Patent Citations (1)
| Title |
|---|
| 吴广顺 等: "摩托车制动器试验台电模拟惯量的研究", 《机械工程与自动化》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567735A (en) * | 2019-09-21 | 2019-12-13 | 吴明 | Method for detecting maximum process difference of braking force of automobile test wheel |
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| Publication number | Publication date |
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| CN107860588B (en) | 2019-09-10 |
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