CN201335774Y

CN201335774Y - Independent and lift-type vehicle front wheel alignment and adjusting device

Info

Publication number: CN201335774Y
Application number: CNU2008202390083U
Authority: CN
Inventors: 周文彬; 滕今朝
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-31
Filing date: 2008-12-31
Publication date: 2009-10-28
Anticipated expiration: 2018-12-31

Abstract

The utility model discloses an independent and lift-type vehicle front wheel alignment and adjusting device, comprising a hoist machine, a handheld device and a ground device; a wired date transporting channel or a wireless date transporting channel is distributed between the hoist machine, the handheld device and the ground device; the handheld device comprises a dual axis tilt sensor, a single chip, an LCD and a standard chip; the ground device comprises a sensor, the single chip, a four-digit nixietube, the standard chip and an acoustic amplifying circuit. The utility model has the advantages of high measuring accuracy, convenient operation, simple structure, convenient using and stable and reliable running.

Description

Independent suspension type vehicle front alignment adjusting gear

Technical field

The utility model belongs to wheel alignment Static Detection field, particularly a kind of independent suspension type vehicle front alignment adjusting gear that is used for.

Background technology

The wheel alignment Static Detection is meant that automobile is stopping or approximate halted state is carried out the measurement of geometric angle to wheel alignment.The main project of wheel alignment Static Detection has: front and back wheel toe-in, front and back wheel flare, Kingpin inclination, reverse caster, turn to toe-out, thrust angle etc.This class checkout equipment that uses has level formula front wheel angle tester, reflection type mirror, electronics stay-supported, laser type, infrared-type, image recognition formula four-wheel position finder etc. by its detection principle and method at present.Level formula wheel alignment meter volume is little, easy to carry, but can't measure toe-in, thrust angle, and its precision is low, inconvenience is installed, and the front wheel driving car can't be installed, and only is suitable for the lorry front-wheel detection with rigid axle suspension; Reflection type mirror orientator volume is bigger, and function is many, as the 900A of Japan, and WAT2000, homemade GCD-I, GCD-II etc.; Electronics stay-supported orientator adopts angular displacement sensor, and with single-chip microcomputer or microcomputer signal is handled and to be calculated each positional parameter.Laser type and infrared-type orientator are that each positional parameter is calculated in the position on ccd sensor by laser or infrared ray with laser or infrared ray and ccd sensor replacement angular displacement sensor.In the four-wheel position finder of laser type and infrared-type, also have functions such as the library management of bus location supplemental characteristic, auxiliary diagnosis, adjustment help.The four-wheel position finder of the type has occupied most domestic checkout equipments market at present, such as gondola Pood difficult to understand, and hundred these Barts of Germany etc.Occur a kind of image recognition formula four-wheel position finder in recent years again,, determine wheel alignment parameter by being fixed on the imageing sensor transfer car wheel location signal on the wheel rim anchor clamps, as German Huffman, U.S. HUNTER811 etc.Traditional relatively orientator, the V3D measuring system is a kind of orientator of brand-new measurement theory, and a kind of revolutionary metering system is provided, and guide effect has been played in the research in this field.

Whether the vehicle front alignment is correct, directly influences the driving safety of vehicle.In Railway Car Plant or maintenance store, the camber angle of independent suspension type vehicle and the measurement of kingpin castor angle, most QLY-B type bubble formula orientators that use are measured, then according to measurement result, adjust in conjunction with experience, this adjustment method exists testing accuracy low and regulate time-consuming, effort, inefficient defective.

Summary of the invention

The purpose of this utility model just is to provide a kind of measuring accuracy height, is convenient to operator's operation, and simple in structure, easy to use, the steady independent suspension type vehicle front alignment adjusting gear reliably of work.

The technical solution that the utility model adopts is as follows:

Independent suspension type vehicle front alignment adjusting gear comprises host computer, handheld device and uphole equipment, is furnished with wired or wireless data transmission channel between host computer, handheld device, uphole equipment; Handheld device comprises double-shaft tilt angle sensor, single-chip microcomputer, LCD, standard chips; Uphole equipment comprises sensor, single-chip microcomputer, group of four figures pipe, standard chips, sound amplifying circuit.

This patent is to utilize sensor and computer technology, and QLY-B type bubble formula orientator is transformed, and wherein handheld device is used to detect camber angle, is reflected in the reverse caster angle at axletree place, and the numerical value of the pad that inserts and the calculating of position.Uphole equipment is used to solve the inconvenience when the left and right rotation 20 of wheel is spent.This device utilizes single-chip microcomputer, and by the foundation and the algorithm of mathematical model, measurement result can be eliminated 10% error that forms in the steering operation process after over-compensation.Then this result and camber angle and kingpin castor angle desired value are compared, single-chip microcomputer can carry out side-play amount and calculate according to the algorithm of design, and the result is come out by liquid crystal display displays, and prompting adjustment person adjust.Therefore, this device can not only accurately be measured Front wheel Alignment Parameters, and intuitively shows the front and back adjusting displacement of top link, improves detection level and work efficiency, and use in agri-vehicle manufacturing plant or the vehicle shop of repairing that accommodates very much.Also has the distinguishing feature that cost is low, easily be automated management.

Below in conjunction with accompanying drawing the utility model is further described.

Description of drawings

Fig. 1 is an one-piece construction schematic diagram of the present utility model;

Fig. 2 is the design concept block diagram of the utility model handheld device;

Fig. 3 is the circuit diagram of a kind of embodiment of the utility model handheld device;

Fig. 4 is the design concept block diagram of the utility model uphole equipment;

Fig. 5 is the circuit diagram of a kind of embodiment of the utility model uphole equipment;

Fig. 6 is the utility model general procedure process flow diagram;

Fig. 7 is camber angle testing process figure;

Fig. 8 is back rake angle testing process figure.

Embodiment

As shown in the figure, total system comprises host computer 1, handheld device 2, uphole equipment 3.

One, handheld device

As shown in Figure 2, U1 is the chip MAX232 of RS232 standard, and U2 is the JG12864A LCD, and U3 is AVR single chip computer AT mega16.The sensor signal reaches single chip computer AT mega16, through after the data processing, and at JG12864A liquid crystal display displays corresponding information, and chip MAX232 and uphole equipment swap data by the RS232 standard.

The circuit diagram of a kind of embodiment of the utility model handheld device as shown in Figure 3.Entire circuit is made up of the chip MAX232 of CXTLA02 double-shaft tilt angle sensor, AVR single chip computer AT mega16, JG12864A LCD, RS232 standard.

The CXTLA02 double-shaft tilt angle sensor is connected to analog quantity input terminal PA0, the PA1 of ATmega16, and the JG12864A LCD is connected to the port C of ATmega16.R11, D1, C6, S5 form reset circuit.S1 ~ S4 is a test button.

Two, uphole equipment

As Fig. 4, shown in Figure 5, the hardware circuit of uphole equipment is by the chip MAX232 of position transducer R1, AVR single chip computer AT mega16,47 sections charactrons, RS232 standard, and sound amplifying circuit forms, and S1 is the hand-reset button.

Once the course of work of the present utility model is elaborated in conjunction with FB(flow block).

One, portion of the handle

1, principle of work:

When adjusting handheld test equipment, when making level or vertical angle be 0 °, level or vertical reference output voltage are 2.5 ± 0.15V, are that level or vertical reference output voltage are the about 0.5V-4.5V of scope under ± 20 ° the situation in measurement range.Level or vertical signal reach analog quantity input terminal PA0, the PA1 of ATmega16 via the CXTLA02 double-shaft tilt angle sensor, change digital signal into.

When according to operating process (back explanation), when pressing test button S1 ~ S4, CPU handles level or vertical signal with respective algorithms, detects camber angle and main shaft back rake angle.

In testing process, according to the difference of state, single-chip microcomputer will be controlled the JG12864A LCD, prompting " beginning to detect camber angle now " the measuring process information of etc.ing, and confirmations such as " level affirmations ", and final detection result " the camber angle detection finishes.Angle is-" etc. information.

2, operating process:

The detection of camber angle: under the situation of revolving 0 degree about wheel, press the test button S1 of camber angle, liquid crystal prompting " beginning to detect camber angle now ", point out according to liquid crystal again, adjust handheld test equipment, make it to be in level, after detecting by horizon sensor this moment, handle liquid crystal display " level affirmation " information through single-chip microcomputer.Single-chip microcomputer writes down camber angle automatically, and prompting " camber angle detects and to finish.Angle for-" resurvey as need, can press the test button S1 of camber angle once more.

The detection of back rake angle: after confirming wheel dextrorotation 20 degree, press the test button S2 of back rake angle, the liquid crystal prompting " begins to detect back rake angle measured value 1 just " now, point out according to liquid crystal again, adjust handheld test equipment, make it to be in level, after detecting by horizon sensor this moment, handle liquid crystal display " level affirmation " information through single-chip microcomputer.Single-chip microcomputer writes down the first measured value 1 of back rake angle automatically, and prompting " first measured value 1 success of back rake angle ".

After confirming left-handed 20 degree of wheel, press the test button S2 of back rake angle once more, liquid crystal prompting " beginning to detect the first measured value 2 of back rake angle now ", point out according to liquid crystal again, adjust handheld test equipment, make it to be in level, after detecting by horizon sensor this moment, handle liquid crystal display " level affirmation " information through single-chip microcomputer.Single-chip microcomputer writes down the first measured value 2 of back rake angle automatically, and prompting " first measured value 2 successes of back rake angle ".Single-chip microcomputer calculates the poor of 2 angles, draws the reverse caster angle that is reflected in the axletree place.Resurvey as need, can press the test button S2 of camber angle once more.

Two, above ground portion

To measure kingpin castor angle is the example explanation course of work:

When automobile reaches the detection station, wheel is to right rotation, position transducer R1 is with the dextrorotary angle of wheel, be transformed into analog voltage signal, pass to single-chip microcomputer PA0 terminal, realize that A/D transforms, give 4 charactrons with the angular detection result and show, be convenient to the driver limit and adjust bearing circle, the wheel anglec of rotation is observed on the limit.

When wheel rotates to 20 to the right when spending, 4 charactrons show 20 degree, and sound amplifying circuit drives loudspeaker simultaneously, sends prompt tone, and the outer workman of driver and Che can know in time that the driver stops to adjust bearing circle.The terrestrial operation personnel use handheld test equipment, begin to carry out back rake angle and measure.This part circuit is simple relatively, no longer stating more.

Conclude the utility model, have the adjusting size that demonstration independent suspension vehicle top link anteroposterior position directly perceived moves regulated quantity, display precision reaches a second level; Can when the front alignment measurement of angle, provide operation voice and display reminding; By communicating by letter, realize functions such as detection line centralized management with host computer.

Claims

1, independent suspension type vehicle front alignment adjusting gear, it is characterized in that: described independent suspension type vehicle front alignment adjusting gear comprises host computer, handheld device and uphole equipment, is furnished with wired or wireless data transmission channel between host computer, handheld device, uphole equipment; Handheld device comprises double-shaft tilt angle sensor, single-chip microcomputer, LCD, standard chips; Uphole equipment comprises sensor, single-chip microcomputer, group of four figures pipe, standard chips, sound amplifying circuit.