SU1024790A1 - Vehicle front axle and steering system diagnostic stand - Google Patents

Abstract

1. STAND FOR DIAGNOSTZHI PERRLNEGO W5CTA AND STEERING A VEHICLE soderZhsschy two sections, mounted on the stationary base x, each of which includes a support planshay | buoy installed on the basis pr.omezhutochnom fixing pneviotsilindry and goniometers, characterized in that, with the goal of extending the functionality of the stand by measuring the dependence of the vertical loads on the front wheels on the angles of their rotation, each section is additionally equipped with a vertical load sensor, kinematically associated with the faceplate and the support base. 2. Stand according to claim 1, characterized in that the kinematic connection of the sensor with the support faceplate is a support plate and a guide device consisting of fingers and bushings connecting the intermediate base with the plate to provide vertical under (L load to the sensor.

Description

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.10 The invention relates to a measurement technique and can be used in assessing the technical condition of a front axle and steering control of wheeled vehicles without disassembly. A stand is known for diagnosing the front axle and steering of a vehicle containing two sections mounted on movable bases, each of which includes a faceplate mounted on an intermediate base fixing pneumatic cylinders and goniometers С 3}. A disadvantage of the known stand is that it does not allow to reliably diagnose the technical condition of the front axle and the steering of vehicles as a result of the fact that it is impossible to measure the values of vertical loads on the wheels. This is due to the fact that the values of diagnostic parameters (for example, lateral forces on the front wheels, resistance to turning the steering wheels, etc.) depend on the magnitude of vertical loads acting on the controlled wheels. The vertical load on the right and left wheels for the same vehicle model, which is a function of the technical condition of the suspension, tires, axle beams and other factors, varies over a wide range. Therefore, it is impossible to reliably diagnose the technical condition of the front axle and steering control without having data on the values of vertical loads on the wheels, as well as their dependencies on the steering angles of the steered wheels. The purpose of the invention is to expand the functional capabilities of the stand by measuring the dependence of the vertical loads on the front wheels on the angles of their rotation. The goal is achieved by the fact that in a stand containing two sections mounted on fixed bases, each of which contains a supporting faceplate mounted on an intermediate base, fixing pneumatic cylinders and a goniometer, each section is additionally equipped with a vertical load sensor, kinematically associated with the base plate and the base. In addition, the kinematic connection of the sensor with the faceplate is a backing plate and a direction (its device consisting of fingers and sleeves connecting the intermediate base with the plate to provide vertical load bias to the sensor. The drawing shows stand for diagnosing the front axle and steering the transport system. The stand consists of two identical sections (under the right and left wheels), each section contains a faceplate 1, which The measures of friction and deformation of the tire are supported by an intermediate base 2 using balls installed in separator 3, which provides operative faceplate 1 with freedom of sweepings in the horizontal plane. The axes of transverse symmetry of the stand on the foundation are equipped with pnavmo cylinders 4, fixing the supporting plate 1 in rods The center position when installing and exiting the vehicle. The electric protractor 5 is attached to the Center of the faceplate 1, allowing it to work with the pantograph 6. measure the angle of rotation of the driven wheels. Through the balls, the intermediate base 2, the sleeves 7 and the plate 8, the load acting on the support plate 1 from the wheel passes to the load sensor 9 mounted on the fixed base 10 the Guide device consisting of the sleeves 7 connecting the interposition of the base 2 with the plate 8, and the fingers 11 entering into the bushings 7, fixed behind the fixed base 10, provides a strictly vertical load on the sensor 9. The order of determining the technical condition of the front axle and steering is the following, Front wheels and the transport service is set to the pre-; but fixed support faceplates. 1 stand. By unraveling the faceplates 1,: they will turn on the measuring system of the stand and determine the magnitudes of the loads on the right and left wheels in the straight-ahead position. These data characterize the condition of the suspension, tires, axle beams, and are also used for further diagnostics of the correctness of wheel alignment angles. Then, the rotation of the vehicle’s steering wheel made it possible to turn the steering wheels to the right (left) at a given angle (for example;; 200) and record the values of vertical loads. The recording of the change on the load in dependence on the angle of rotation can be carried out continuously with each plotter. The counter angle beyond the angle of rotation is carried out along the inner (relative to the center of rotation) wheel. At the same time, the angles of rotation of the right and left wheels, which characterize the condition of the steering trapeze, are recorded. In addition, using lime

3 1024790. "

devices determine the strength of the resistance; front axle and steering steer turning steering steering.

the woods. After that, the controlled wheels are connected with the fact that the stand allows:

On the vehicle, turn the vehicle to determine the change in rotation (to the opposite (relative loads on the controlled wheels, the position of the straight-line motion) 5 depending on their turning angles,

at the same angle and is determined in a close-up. / accuracy of diagnosis

grades-vertical loads, the angles of the technical state of the front

wheel gates and steering force and steering force to the steering wheel. Comp. is.;.

field with regulatory (for a given mo-tO Reliable detection of vehicle malfunction) values reduces costs

no vertical loads on the wheels of time and labor for maintenance and

in three positions (or e-registration of the front seat and the steering

bathroom using the plotter control, reduce the intensity

depending on the vertical load s tire wear and, consequently, the cost

from the angle of rotation of the wheels, with a reference), to acquire them, to improve the control as well as data on the strength of the vehicle’s resistance to

turning the steering wheel, reduce the likelihood of

report on the technical condition. .Roaddispo accident $.

Claims (2)

1. THE FRONT AXLE STAND AND THE TRANSPORTATION STAND comprising two sections, on fixed bases, each of which includes a support plate mounted on an intermediate base, fixing pneumatic cylinders and goniometers, characterized in that, in order to expand the functional capabilities of the stand due to measuring the dependence of vertical loads on the front wheels on their rotation angles, each section is additionally equipped with a vertical load sensor kinematically connected with the support plate and the base. 2. Stand pop. 1, characterized in that the kinematic connection of the sensor with the support plate is a support plate and a guiding device consisting of fingers and bushings connecting the intermediate base to the plate to ensure vertical application of the load to the sensor. On the intermediate base, fixing pneumatic cylinders and goniometers, each section is additionally equipped with a vertical load sensor kinematically connected with the support plate and the base. In addition, the kinematic connection between the sensor and the support plate is a support plate and a guiding device consisting of fingers and bushings connecting the intermediate base to the plate to ensure vertical application of the load to the sensor. 65