A kind of two wheeler brake system monitor station that can simulate the wheel load transfer
Technical field
The utility model relates to a kind of two wheeler braking checkout equipment, relates in particular to a kind of two wheeler brake system monitor station that can simulate the wheel load transfer.
Background technology
Compare with four-wheel or three-wheel, the two wheeler safety coefficient is lower, when braking, if the locking of front-wheel elder generation loses steering capability easily, if rear lock rear axle takes place easily breaks away or turn on one's side.Two wheeler brake system detection method is divided into road examination and two kinds of bench teats, and the road examination detects and requires road conditions high, and security is difficult to assurance; Bench teat detects because of not receiving weather, environmental baseline restriction more and more to receive people's attention.That sees at present has about two wheeler brake system bench teat detection scheme: disclosed Chinese patent 91207717.4 on November 13rd, 1991 " two-wheel power vehicle braking test board ", fixing front and back cylinder on Working gantry, two cylinder chain transmission; Front roll connects arm bar through motor and speed reduction unit; Arm bar one end has pressure transducer, and when surveying damping force, two-wheel power vehicle brakes on the cylinder of running; Cylinder and motor and speed reduction unit are done differential motion; Stir the arm bar action, pressure transducer is carried signal to computing machine, and computing machine shows damping force.
Above-mentioned patent can't the simulating brake process in the wheel load transfer phenomena; Make simulation during wheel braking the wheel load during with actual braking have than big-difference; Cause detected brake system working condition inconsistent with the working condition in the actual braking, testing result is difficult to accurately reflect two wheeler brake system real work performance.
Summary of the invention
In order to overcome the deficiency of existing two wheeler braking monitor station, the utility model proposes a kind of two wheeler brake system monitor station that can simulate the wheel load transfer.
The utility model is realized through following technical measures: a kind of two wheeler brake system monitor station that can simulate the wheel load transfer comprises base, front and back gearing, front roll assembly, back roll assembly, rolling stand, swivel pin, cylinder lifting device, TT&C system; Rolling stand is connected with base with swivel pin through the cylinder lifting device; Each roller assembly comprises the cylinder that tests the speed, flywheel, rotor drive, power wheel and two idler pulleies; Two idler pulleies are installed in parallel on the rolling stand with the cylinder that tests the speed; Connect through rotor drive between two idler pulleies, flywheel, power wheel are installed in two axle heads of one of them idler pulley respectively; The idler pulley of front roll assembly and back roll assembly is done by front and back gearing, power wheel and is in transmission connection, and guarantees that all idler pulley rotating speeds equate; TT&C system comprises: computing machine, vehicle speed sensor, preceding wheel speed sensors, back wheel speed sensors, wheel load shift sensor; Vehicle speed sensor is through measuring the speed of a motor vehicle of idler pulley rotating speed reflection simulation; Preceding wheel speed sensors, back wheel speed sensors are installed in the cylinder end of testing the speed of front roll assembly and back roll assembly respectively, are used for reflecting the linear velocity of front and back wheel respectively; Wheel load shifts sensor and is installed between rolling stand and the base, is used for reflecting the wheel load transfer amount; Computing machine shifts sensor with vehicle speed sensor, preceding wheel speed sensors, back wheel speed sensors, wheel load, the cylinder lifting device is electrically connected.
By the cylinder lifting device rolling stand is rotated around swivel pin, realize that wheel load shifts simulation; Computing machine is according to setting requirement; Shift the information Control cylinder lifting device of sensor according to vehicle speed sensor, preceding wheel speed sensors, back wheel speed sensors, wheel load; And store the speed of a motor vehicle, wheel speed and the wheel load transinformation that records, realize two wheeler brake system performance detection.
The front and rear wheel of two wheeler to be detected is respectively after in place on the idler pulley of front roll assembly and back roll assembly; By two wheeler power source to be detected through two wheeler driving wheel to be detected drive idler pulley, test the speed cylinder and two wheeler non-driving wheel to be detected rotation; Reach and cut off two wheeler power enforcement braking to be detected when setting the speed of a motor vehicle; Computing machine shifts sensor information index drum lifting device according to vehicle speed sensor, preceding wheel speed sensors, back wheel speed sensors, wheel load, realizes the simulation that wheel load shifts.The speed of a motor vehicle of vehicle speed sensor reflection descends fast more; The cylinder lifting device makes the rise of back roll assembly big more; Make that front-wheel wheel load recruitment is more, trailing wheel wheel load reduction is many more; The wheel load transfer amount of simulation is many more; Wheel load when making the wheel load of simulation change with actual braking changes basically identical, and the working condition of brake system is more approaching in the working condition that guarantees two wheeler brake system in the testing process and the actual braking of two wheeler, makes each wheel of detected two wheeler take turns fast and cylinder position information can reflect two wheeler brake system real work performance to be detected exactly.
The beneficial effect of the utility model is: the utility model provides the bench teat means for detecting two wheeler brake system performance; Can simulate wheel load transfer case in the braking procedure; Make seized two wheeler wheel operation conditions and practical operation situation more approaching, guarantee that testing result reflects the performance of seized two wheeler brake system more exactly.
Description of drawings
Fig. 1 is the utility model physical construction vertical view.
Fig. 2 is the utility model physical construction front view.
Fig. 3 is the utility model TT&C system synoptic diagram.
Fig. 4 is the utility model roller assembly structural representation.
Among the figure: gearing before and after the 1-base, 2-, 3-front roll assembly, 4-back roll assembly, 5-rolling stand; 6-swivel pin, 7-cylinder lifting device, 8-idler pulley, the 9-cylinder that tests the speed; The 10-flywheel, 11-rotor drive, 12-power wheel, 13-computing machine; The 14-vehicle speed sensor, wheel speed sensors before the 15-, wheel speed sensors behind the 16-, the 17-wheel load shifts sensor.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below through embodiment, and combine accompanying drawing, this programme is set forth.
Like Fig. 1, Fig. 2, Fig. 3, a kind of two wheeler brake system monitor station that can simulate the wheel load transfer shown in Figure 4, comprise base 1, front and back gearing 2, front roll assembly 3, back roll assembly 4, rolling stand 5, swivel pin 6, cylinder lifting device 7, TT&C system; Rolling stand 5 is connected with base 1 with swivel pin 6 through cylinder lifting device 7, and cylinder lifting device 7 adopts the electric-controlled hydraulic cylinder; Each roller assembly comprises the cylinder 9 that tests the speed, flywheel 10, rotor drive 11, power wheel 12 and two idler pulleies 8; Two idler pulleies 8 are installed in parallel on the rolling stand 5 with the cylinder 9 that tests the speed; Connect through rotor drive 11 between two idler pulleies 8, flywheel 10, power wheel 12 are installed in two axle heads of one of them idler pulley 8 respectively; All idler pulleies 8 are done and are in transmission connection by front and back gearing 11, power wheel 12, guarantee that all idler pulley 8 rotating speeds equate; TT&C system comprises: computing machine 13, vehicle speed sensor 14, preceding wheel speed sensors 15, back wheel speed sensors 16, wheel load shift sensor 17; It is angular displacement sensor that wheel load shifts sensor 17, is installed between rolling stand 5 and the base 1 by swivel pin 6, changes reflection wheel load transfer amount through the angle between rolling stand 5 and the base 1; Computing machine 13 shifts sensor 17 with vehicle speed sensor 14, preceding wheel speed sensors 15, back wheel speed sensors 16, wheel load, cylinder lifting device 7 is electrically connected.
By cylinder lifting device 7 rolling stand 5 is rotated around swivel pin 6, realize that wheel load shifts simulation.Computing machine 13 is according to setting requirement; Shift the information Control cylinder lifting device 7 of sensor 17 according to vehicle speed sensor 14, preceding wheel speed sensors 15, back wheel speed sensors 16, wheel load; And store the speed of a motor vehicle, wheel speed and the wheel load transinformation that records, realize two wheeler brake system performance detection.
Cylinder lifting device 7 also can adopt the motor-driven screw mechanism to realize.
Wheel load shifts sensor 17 also can adopt linear displacement transducer, is installed on the cylinder lifting device, through measuring the lift height reflection wheel load transfer amount of cylinder lifting device.
Wheel load shifts sensor 17 also can adopt load sensor, is installed in cylinder lifting device top, through measuring the pressure reflection wheel load transfer amount of 5 pairs of cylinder lifting devices 7 of rolling stand.