SU1427201A2 - Bed for testing vehicles - Google Patents

Abstract

Inventively relates to transport engineering and can be used in determining the lateral stability of the moments of inertia, mass and coordinates of the center of gravity of vehicles. The purpose of the invention, nor the expansion of functionality. On the base 1, by means of a hinge with a horizontal axis of rotation 2, a platform 3 is installed, supported on the base 1 through elastic elements 10. On the platform 3, a support plate 6 with a vehicle 7 mounted on it by means of the t 5 rolling rods. The base plate 6 is set in motion, hit the support 9, simulating the side slide of the vehicle 7 along the slope and the interaction of its propellers with the unevenness of the soil. 1 il. (L

Description

The invention relates to a transport engineering and can be used in determining the lateral stability, inersh moments, mass and coordinates of the center of the vehicle.

The purpose of the invention is the expansion of functional functions;

The drawing shows the stazz, general view.

On the base 1, by means of a hinge with a horizontal axis 2 of rotation, a platform 3 is installed. Guides 4 are mounted on the platform 3 on which a support plate b is installed by means of the rolling bodies 5 to accommodate a test vehicle 7 on it.

6 is equipped with locking mechanism 8 of the base plate 6 with platform 3. On the guides 4 on either side of the test vehicle

7 fastened stops 9, On. The base t under the platform 3 is fixed by elastic elements 10. The case of the power cylinder 11 placed under the platform 3 is pivotally connected to the support 12 fixed on the base, and to the platform 3 by means of a ball joint 136 of the hydraulic cylinder 11 by means of adjustable the throttle 14 and upstream hydraulic distributor 15 is in communication with the source 16 of the pressure of the vehicle 7, in order to prevent the vehicle from crawling sideways 7 on the base plate

b fixed support bars 17, and

to prevent tipping -

safety device 18,

The measuring apparatus includes a platform 19 angle sensor 19, a vertical load sensor 20 mounted on a base plate 6, an additional vertical load sensor 21 mounted on a power cylinder 1t with the ability to interact with the base 1, and a sensor 22 to determine the period of the carbon load oscillation platform 3 around the horizontal axis 2 on the elastic elements 10, the Sensors 19-22 are connected to the recording device 23,

In order to determine the moment of inertia of the vehicle 7, pressure is applied to the headless cavity of the power cylinder 11; Platform 3 with

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the base plate b and the vehicle under test 7 are raised, turning around the horizontal axis 2, the energy reserve for exciting angular oscillations. The base plate, base plate and platform 3 are connected to each other through the locking mechanism 8. When connecting the rodless cavity of the power hydraulic cylinder 11 with the drain, the platform 3 falls on the elastic elements 10, making free oscillations. By adjusting the adjustable throttle 14, the speed of movement of the platform 3 can be varied. The hinged connection 13 eliminates the damping effect of the adjustable throttle 14. The sensor 22 and the recording device 23 determine the period of angular oscillation of the platform 3 and calculate the inertia moment of the vehicle 7 by known dependencies .

To determine the parameters of the static stability of the vehicle 7, the platform 3 with the base plate 6 is lifted by a power hydraulic unit 11 until the propulsion of the vehicle 7 from the base plate b is removed. The separation moment is determined by the vertical load sensor 20, the angle of inclination overturning vehicle 7.

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In determining the parameters of the dynamic stability of the vehicle 7, the base plate b with the test vehicle 7 installed on it is placed at some distance from the stops 9, the base plate b and the platform 3 are interconnected by the locking mechanism 8, the platform 3 is raised by the power cylinder 11 to a predetermined angle and turn off the lock mechanism 8, disconnecting the base plate 6 and the platform 3 from each other. The support plate 6, rolling down on the rolling bodies 5 along the guides 4, hits the stop 9, which imitates the lateral sliding of the vehicle 7 along the slope and the interaction of its propellers with soil unevenness. By varying the speed of wrapping the base plate (i.e. the angle of lifting of the platform 3 and the initial installation of the base plate 6), it is possible to determine the critical slip speeds and angles of inclination of the vehicle 7.

1427201

Claims (1)

To determine the mass and coordinates, the Formula of the invention of the center of gravity of a vehicle 7 measures the vertical load. Stand For testing transport on a power hydraulic cylinder 11 with two means of auth. St. No. 1145263, t - the positions of the base plate 6, for example, characterized by the fact that, from the extreme positions. Composed by expanding the functional possibilities of the moments of forces, realities, it is equipped with guides, on the system, relatively horizontal-mounted on the platform, the supporting base axis 2 at the first and second position of the plate, established by means of the WIEX of the base plate 6, us — the bodies of rolling on the guides, the mechanism and the coordinates of the center of the body of the blocking transom. the base plate with the plate means 7.form, stops fixed on Thus, the proposed guides on both sides of the test provide the ability to determine the available vehicle, and mass, coordinates of the center of the body and pa-additional vertical sensor dynamic stability measurements on the load a vehicle that expands the hydraulic width of the cylinder with the possibility of mutual functional capabilities of the stand. action with the base.