SU1368696A1 - Bed for testing pneumatic tyres - Google Patents

Abstract

This invention relates to the automotive industry, in particular to automotive test devices. The goal is to improve the accuracy of testing by means of th and the implementation of operational loads and enhanced functionality. A load-bearing mechanism is installed on the base plate 1, which has guides on which the support legs 3 move with horizontal support platforms, each platform moves as the screws 5 rotate. Bearings with three-flange strain gauge axle are mounted on the platforms. with the test tire 11 and a pivoting frame 8 with cargo platforms 9 and ballast weights 10 placed on it. Under the test tire 11 there is a supporting platform 12, and on the plate 11 it is mounted to an arkas with an electric motor 14, connected via a gearbox 15, and gears with screws 5. Screws 5 have a handle 18 for a manual drive. The instantaneous frame drop is effected by means of a dumping mechanism 20. 2 c.p. f-ly, 4 ill. with with

Description

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This invention relates to the automotive industry, in particular to devices for testing automobile tires.

The purpose of the invention is to improve the accuracy of testing by simulating operational loads and expanding functionality.

FIG. 1 shows the stand, the general appearance} on fig. - 2 - that. top view; in fig. 3 - the same, side view; in fig. 4 shows a kinematic diagram of a tire rutile bench with a test tire.

The stand consists of a massive base plate 1 with longitudinal grooves rigidly embedded in the foundation. On the plate, a power loading mechanism 2 is fixedly mounted, along the vertical guides of which the support legs 3c move along the horizontal and vertical platforms 4. -Each platform moves as the screws rotate .5.

On horizontal platforms 4, two-row spherical ball bearings 6 are mounted, which serve as a support for the H1 of the three-flange strain gauge axis 7. A wheel disk with a test tire is mounted to the middle flange, with the help of the extreme flanges on the axis there is a swinging frame 8, in the side members of which there are holes for bolted connection, drilled so that it can be approximately statically balanced about the axis during installation.

On the frame there are cargo platforms 9 for installation of ballast removable weights 10. A support platform 12 is installed on the slab under the test tire 11, the upper part of which is filled with corrugated concrete to increase adhesion to the tire.

In order to load the tire with a normal load, the stand is equipped with an electromechanical drive mounted on a U-shaped frame 13 mounted on plate 1. Frequency adjustable electric motor 14 Through the worm gear 15 and the chain gear 16 and 17 transfers the torque element to screws 5. Screws also have Turn 18 for manual rotation.

On a three-flange strainer bar 7, a rheochord electric sensor 19 is installed.

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For pushing the end of the beam and instant dumping there is a dumping mechanism 20.

According to the stand scheme, the weight of the pivot frame 8 with ballast weights 10 and the mounted wheel with tire 11 is completely perceived by the bearings 6, and the normal load on the tire is created by the vertical movement of the horizontal bearing pads 4. At the same time, the frame together with the wheel disk and three-flange strain gauge axis 7 can swing in the bearings 6 when the end of the pivoting frame 8 is instantly dropped by the ejection mechanism 20. The ballast removable weights allow the oscillation frequency of the pivoting frame to be changed.

When one of the ends of the pivoting frame is loaded with strictly calibrated ballast weights 10, the tire 11 is twisted with a twisting moment.

The angular movement of the pivoting frame 8 when turning (tire twist angle) is measured with a rheochord electric sensor 19, the normal load is measured with tensometric resistance sensors glued onto a three-flange tensometric axis 7, followed by registration with a self-leveling device . The loading moment is determined by the calculation, when installed on cargo plots, of accurately ottirovanny ballast weights at a strictly measured distance from the axis.

F o r mula inventions

1. Test bench for pneumatic tires containing a base with a base plate for mounting on it

test tire, axle fixed on supports, rigidly fastened to the flange for fastening the wheel rim to the test tire, two-arm lever with weights on the ends, angle sensor

wheel displacement, associated with the axle, a power loading mechanism mounted on the base, as well as strain gauges of force measurements, which is characterized by

The aim is to improve the accuracy of testing by simulating operational loads and expanding functional ones. capabilities, it is equipped with an instant dumping mechanism of the two shoulders, and the loading mechanism is completed with an electromechanically driven movement in the vertical plane of the supports in the form of platforms, which have a rotatable axis, a strain gauge, and on which a flange is located.

2. Stevd according to Clause 1, which is different from the fact that the axis is made with two additional flanges,

placed on both sides of the flange for fastening the wheel rim, and the double-arm lever is made in the form of a frame containing spars connected by cross-beams and fixed in the middle part to additional flanges.

3. Stand according to claim 1, characterized in that the support plate is made corrugated on the side of contact with the test tire.

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Claims (3)

Claim 1. A test bench for pneumatic tires, comprising a base with a base plate for mounting the test tire on it, an axle mounted on the supports, rigidly fastened with a flange for attaching the wheel rim to the test tire, a two-arm lever with weights at the ends, an angle sensor 50 for wheel movements connected with an axis, a power loading mechanism mounted on the base, as well as strain gauges of force measurements, characterized in that, with the aim of increasing the accuracy of tests by simulating operational loads and expanding, functional x opportunities, it is equipped with a mechanism for instant dumping of a two-shouldered growl of 1368696 hectares, and the loading mechanism is made with an electromechanical drive for moving in the vertical plane of the supports in the form of platforms on which the rotary axis is mounted, made tensometric and on which the said flange is placed. 2. The stand according to claim 1, characterized in that the axis is made with two additional flanges located on both sides of the flange for mounting the wheel rim, and the two-arm lever is made in the form of a frame ₅ containing spars connected by crosses and in the middle parts mounted on additional flanges. 3. The stand according to claim 1, characterized in that the base plate 10 is made corrugated on the side of contact with the test tire. Fig.Z Compiled by Y. Yuryev Editor L. Gratillo Tehred L. Serdyukova Corrector S. Shekmar Order 281/42 Circulation 847 Subscription VNIIIPI of the USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushskaya nab., 4/5 Production and printing company, Uzhgorod, Project 4,