Pull-wire four-wheel aligner sensors as shown in the figure (Figure for the right front wheel sensor. It consists of the sensor
sensor upper body sensor lower body and side end caps and other components. Two
mutually perpendicular sensor jacks are arranged on the upper body of the sensor, one is a mounting jack for measuring the inner camber angle of the main pin and the other is a mounting jack for
measuring the rear camber angle of the main pin and the front beam. Needle bearings are fitted in the mounting holes to ensure that the sensors swing freely once they are
mounted on the wheel chocks. The leveling bubble on the top cover of the sensor is used to verify that the sensor is mounted vertically. The locking knob is used to lock the sensor so that the sensor housing can rotate with the wheel
. Two precision potentiometers are mounted in the lower body of the sensor. The potentiometer housings are fixed to the sensor lower
body. The function of the potentiometers is to measure angles. The horizontally arranged potentiometer is used to measure the wheel front beam
and the drive shaft thrust angle, and the vertically arranged potentiometer is used to measure the main pin inward tilt angle, main pin rearward tilt angle, and
wheel camber angle. One end of the wire pull swing arm has holes for hanging an elastic pull wire. Through the elastic cable, the
rear axle sensor cable swing arm is connected. The other end of the cable swing arm is fastened to the rotating shaft of the precision potentiometer. Precision
Potentiometer brush can be moved with the swing of the swing arm, changing the output resistance, so as to transmit a certain proportion with the
front beam of the amount of voltage, by the instrument calculates and displays the value of the front beam. The heavy
hammer, which also serves as the damper piston, is tightly connected to the rotating shaft of the precision potentiometer through the potentiometer swing arm. The purpose of the weight is to ensure that the potentiometer arm is always plumb. When the sensor shell with the wheel camber changes or wheel rotation,
drive potentiometer brushes to move, change the output resistance, so as to transmit with the wheel camber angle of the main pin rear camber measurement
measurement value or the main pin camber measurement value has a certain proportionality of the voltage quantity, by the instrumentation to calculate and display the wheel camber angle of the rear camber angle of the main pin or the main pin camber angle value. By also acting as a damper piston of the hammer and damper work
chamber composed of vibration dampers, to prevent the pendulum of the hammer vibration, to improve the test speed and detection accuracy. Shielded cable leads are used on the sensor
cable connector to connect to the meter to transmit the angle information to the computer for measurement.
The inner side of the side cover is glued with a metal plate to shield the interference of external electromagnetic wave. Optical four-wheel aligner
Optical four-wheel aligner structure and function of the major components are as follows:
Part II Automotive Performance Inspection and Testing General Methods Standard
The diagram of the sensor structure of the pull-wire four-wheel aligner
Elastic pull-wire front beam potentiometer pull-wire swing arm leveling bubble main pin camber measurement jack
Sensor locking the upper body of the sensor Knob screw Main pin rear camber measurement jack Front beam and
Thrust angle measurement potentiometer Sensor lower body Wheel camber and main pin camber measurement potentiometer
Potentiometer Swing arm Sensor cable connector Heavy weight doubles as a damping piston
End cap on the side of the working chamber of the damper
The test projector structure is shown in the figure, which functions to project the crosshair scale lines and to act as a screen < /p>
Receive the cross scale line reflected back from the wheel mirror, and read out the vehicle
wheel front beam value wheel camber and main pin rear camber angle, etc., according to the scale where the reference line intersects with the cross scale line.
Guide structure shown in the figure, its function is to support the test projector, located in the
rear wheels at the rail is longer to ensure that the projector can slide back and forth on the projector to adapt to different wheelbase vehicle testing
Requirements.
Turntable structure and its role in the same bubble level wheel positioner, will not repeat.
Universal wheel mirror mounting bracket structure as shown in the figure, the mounting bracket of the three jaws were fixed in the wheel
rim rim, the jaws can be adjusted according to the size of the rim, and can be locked by its eccentric handle.
The structure of the wheel mirror is shown in the figure, the wheel mirror has three mirrors, the left and right two mirrors and the center of the mirror between
the angle is, used to receive and reflect the light projected by the projector. The wheel mirror is clamped to an adjusting disk by means of a locking sleeve, and the adjusting disk is fixed to a universal wheel mirror mounting bracket by means of triangularly arranged bolts.
Part II General Methods Standard for Automotive Performance Inspection and Testing
Diagram Test Projector and Guide Rail
Screen with Cross Scale (Projection Screen Main Pin Rear Inclination Pointer Projector Mirror Guide Rail
Diagram Universal Wheel Mirror Mounting Bracket
Positioning Measuring Tape Measure The structure of the positioning measuring tape is shown in the figure, and the positioning measuring tape consists of a tape measure and a
Magnetic seat, its function is to measure the car's positon.
The structure of the rear wheel alignment slide plate is shown in the figure, the rear wheel alignment slide plate is placed under the rear wheels, which can
align the car left and right.
The structure of the main pin camber tester is shown in the figure, which is mounted on the wheel mirror adjustment plate, and is specially
used to test the main pin camber.
Microcomputer pull-wire type four-wheel aligner
Part II Automotive Performance Inspection and Test General Method Standard
The diagram wheel mirror
The diagram positioning measurement tape measure
The diagram rear wheel alignment slide plate
Part II Automotive Performance Inspection and Test General Method Standard
The diagram main pin inner camber tester
Microcomputer pull-wire type four-wheel aligner is shown in the figure. Its main structure consists of a host cabinet with microprocessor and
Color monitor keyboard printer infrared electronic measuring tape (used to detect the wheelbase infrared remote control standard
Quasi-turntable or electronic turntable self-centering chuck wheel sensors junction box cable sensors pull-wire steering
disc locking lever and wheel brake lever and so on.
The use of four-wheel aligner
The current use of optical and microcomputer pull-wire four-wheel aligner, although the principle of measurement is basically the same, but the use of
methods have some differences. Therefore, before using the instrument should be read in detail, according to the instrument instruction manual
requests and prescribed methods for testing. The following computerized pull-wire four-wheel aligner as an example to illustrate the use of four-wheel aligner
.