Stand to control the angles of the wheels of the car

 

(57) Abstract:

Use: diagnosis of the chassis of the vehicle, namely, the control of the angles of the wheels. The inventive perpendicular to the working bodies of the variable-length posted by link rod. Working bodies of variable length are installed parallel to each other. The connecting rod is rigidly connected with both the working bodies of variable length and placed at the base can be rotated around its longitudinal axis by the bearings. The base is made covering the connecting rod and capable of rotation around its axis by means of bearings. Working bodies of variable length can be made in the form of a telescopic rod. On the guides placed perpendicular to the working bodies of variable length, and United with them, set the measuring device made in the form of the measuring elements and in contact with the wheels of the vehicle. The measuring elements mounted on rails for movement along and rotation around their axes. Effect: reducing the complexity of diagnosis and time to conduct, as well as improving the acquisition relates to the field of measurement technology and can be used to diagnose vehicle chassis, namely, to control the angles of the wheels.

Known stand to control the angles of the wheels (optical type) that contains a bracket fixedly mounted thereon a measuring device made in the form of a platform and cross-scale tilting mirror, a microscope, and a mirror reflector mounted on the wheel parallel to the plane of rotation of the wheel. Between the bracket and the mirror reflector mechanical coupling is absent. The value of the controlled angles is determined by the offset cruciform scale platform relative to the crosshair of the microscope (see the book Kramarenko, C. "maintenance of vehicles". M., "Transport", 1983, S. 196 - 197).

The disadvantages of the described stand for control of the wheels are the increased complexity of manufacture due to the complexity of the design, and the large complexity of the diagnosis and the time spent on these works.

Closest to the proposed invention to the technical essence and the achieved result, i.e., the prototype is the stand to control the angles of the wheels of the vehicle (contact type), containing guides, steady sacrista made in the form of the measuring head, having the ability to move along the rails. The measuring head is placed measuring rods, with the possibility of embedding inside her independently Draga. At the wheel of the vehicle parallel to the plane of rotation of the wheel set of the contact disk. The value of the controlled angles is determined by the difference between embedding and measuring rods after moving the measuring head along the guides until it stops measuring rods in contact disk mounted on the wheel. While the vehicle is on site to diagnose so that its longitudinal axis is perpendicular to the guide rails and the contact disc attached to the wheel, was opposite the measuring rods (see the book of Kusnezov E. C. "maintenance of the car," M "Transport", 1991, S. 153 - 154).

The main disadvantages of this stand to control the angles of the wheels of the vehicle are increased complexity of diagnosis and time to conduct, because the measuring head can move only in one direction along the fixed rails, and the car must be installed on the platform for diagnostirovanie is not quite convenient in operation, because using it you can control the angles of the wheels only cars, not trucks, due to the fact that the measuring head is not provided to adjust its height position relative to the platform to diagnose.

The invention consists in that the stand to control the angles of the wheels of a motor vehicle comprising guides, designed to move the measuring device is equipped with a parallel working bodies of the measured length, the connecting shaft is rigidly connected with parallel working bodies of variable length and is placed perpendicularly to them, base covering the connecting rod and capable of rotation around its axis. This connecting rod is installed in the base can be rotated around its longitudinal axis, and the guides are designed to move a measuring device, arranged perpendicularly to the working bodies of variable length and connected with them.

Working bodies of variable length can be made in the form of a telescopic rod.

The technical result is to reduce the complexity of diagnostirovaniyu wheels of the car.

Reducing the complexity of the diagnosis and the time for conducting diagnosis is ensured by installation of the proposed stand for arbitrarily standing on the platform for diagnosing a vehicle, because the stand has been introduced in parallel working bodies of variable length, movable connecting rod, placed perpendicularly these working bodies, and the base that allows the measuring device is placed on the guides that are installed perpendicular to the working bodies of variable length and connected with these working bodies, to move not only along the guides, but together with them in different directions. In addition, the use of the coupling rod allows you to set in the working position, i.e. otbasarova, both working body of variable length at the same time, which further reduces the time required to carry out the diagnosis.

Improving the usability of the stand to control the angles of the wheels of the vehicle is achieved by the fact that using this stand, you can control the angles of the wheels for passenger and freight cars, because you can adjust the position of the measuring device relative to lowestand designed to control the angles of convergence, collapse, transverse and longitudinal inclination of the pins of the wheels of the car.

Depending on the measuring elements of the measurement process may be different.

For the measurement item in the well-known gauge of the type specified in the application in the example, the measured angles will be determined by the difference of linear units move the indicator rod measured at certain points of the drive wheels of the vehicle. The translation values of the difference of displacement in angular units can be produced by known formulas, for example, in the book Yurchenko A. N. "Running part of the car", Kharkov, high school, 1983, Chapter 2, S. 120.

When using the measuring device of another type, the process of measurement may be different.

The invention is illustrated by drawings, where Fig. 1 shows the proposed stand to control the angles of the wheels of the car, side view; Fig. 2 - the same, top view; Fig. 3 is a diagram of the installation of the stand to control the angles of the wheels of the vehicle; Fig. 4 - scheme of installation of the measuring device relative to the drive wheels of the vehicle.

Stand to control the angles of the stake is parallel with the working bodies 1 variable-length and placed perpendicularly to them the base 3, covering the connecting rod 2 and having the possibility of rotation around its axis by means of bearings (not shown). Attachments 1 variable-length can be made in the form of a telescopic rod. The connecting rod 2 is installed in the base 3 can be rotated around its longitudinal axis by means of bearings (not shown) located at the base 3. On the guides 4, placed perpendicular to the working bodies 1 and United with them, set the measuring device, in particular, made in the form of the measuring elements 5 contact type that interacts with the wheels 6 of the vehicle. In the measuring elements 5 can be used gauges. The measuring elements 5 are placed on the guides 4 can move along the rails and rotate around their axes in bearings (not shown).

In addition, in the drawing of Fig. 2, the dashed lines (the FLOOR.I marked the position of the stand to control the angles of the wheels of the vehicle during installation (base) relative to the longitudinal axis of the vehicle, and solid lines (the FLOOR. II) the position of the same stand when the control angles postanovka wheels of the vehicle, and the dashed lines the position of the same stand in the installation process relative to the vehicle; Fig. 4, solid lines indicate the operating position of the measuring device, and the dashed lines the position of the measuring device during the installation process relative to the drive wheels of the vehicle.

Stand to control the angles of the wheels of the car works as follows. After arrival of the vehicle to the site to diagnose the stand to control the angles set in position I (see Fig. 2) so that the longitudinal axis of the stand was parallel to the longitudinal axis of the vehicle. This is achieved by turning the base 3 on bearings around its axis (see Fig. 3). Then regulate the length of one of the working bodies 12 in accordance with the base of the car so that the measuring element 5 facing drive the rear wheels 6 of the vehicle. When this measuring element 5 is installed at a height relative to the platform to diagnose due to the rotation of the coupling rod 2 around its longitudinal axis (see Fig. 4). The ability to move the measuring element 5 is perpendicular to the working body 1 along the guide 4 allows you to adjust the proposed stand on rapadilino axis of the vehicle, as well as measuring angles (camber and toe) of the wheels of the rear axle of the car, because on many modern cars provided by their adjustment. Then, the measuring element 5 is transferred to the drive, the front wheels 6 of the vehicle in position II (see Fig. 2) due to the rotation of the coupling rod 2 on bearings around its longitudinal axis and control of the angles of the wheels of the front axle of the vehicle (camber, toe, longitudinal and transverse inclination of the pins). Fixing the measuring device 5 is one of the well-known methods, for example, by mechanical braking devices located on the transverse rod, a support and guide the measuring device (if necessary, you can fix the measuring device and manually). Then control the angles of the wheels is on the other wheel, with the measuring element 5 is already in the working position due to the presence of the coupling rod 2.

Thus, the use of the stand to control the angles of the wheels of the vehicle reduces the complexity of diagnosis and time to carry out diagnosis, and improving facilities in the EC is appointed to move the measuring device, characterized in that it is provided with parallel working bodies of variable length, the connecting shaft is rigidly connected with parallel working bodies of variable length and is placed perpendicularly to them, base covering the connecting rod and capable of rotation around its axis, while the connecting rod is installed in the base can be rotated around its longitudinal axis, and the guides are designed to move a measuring device, are perpendicular to the working bodies of variable length and connected with them.

2. Stand to control the angles of the wheels of the vehicle under item 1, characterized in that the working bodies of variable length made in the form of a telescopic rod.

 

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FIELD: measurement technology.

SUBSTANCE: device has movable re-arranging rods, which are mounted inside case and brought into contact with sides of angle. The rods are made in form of two curved straight prismatic plates having rectangular cross-section and connected to each other by means of telescopic joint. There is longitudinal slot in embracing plate. Embraced plate enters the slot for reciprocal motion and location of plates relatively each other. Side faces of embraced plate are provided with angular scales to read angle out. Angle is marked by surface of edge part, which embraces plates when there is the contact of four long ribs of edge parts of both plates with surfaces of sides of two-sided angle.

EFFECT: improved precision of measurement; simplified design.

2 dwg

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