SU1204993A1 - Bed for testing pneumatic tyres - Google Patents

Description

2. CVeHfl according to claim 1, which is distinguished by the fact that, c. the purpose of imitating the interaction of a wheel with various types of soil, the pneumatic casing is divided by hermetic longitudinal partitions into a series of sections, each of which is equipped with an independent valve.

one

The invention relates to bench equipment, in particular for testing pneumatic tires of a vehicle.

The purpose of the invention is to expand the functionality of the stand by simulating the movement of the wheel on the deformable soil.

FIG. 1 is a schematic representation of the proposed stand, a general view, in FIG. 2 shows section A-A in FIG. 1 is a cross section of a pneumatic tape) j pa FIG. 3 shows a section BB in FIG. 2 (longitudinal incision of pneumatic tape). . The stand is arranged as follows.

A wheel with a test pneumatic tire 1, a hub 2 is rigidly mounted on axis 3, which is inserted into fork 5 by means of bearings 4 and a load plate 6 rigidly fixed to the load 7 is fixed above the latter. The load plate 6 with a load 7, fork 5, axis 3 and pneumatic tire 1 freely move in guide cylinders 8. Pneumatic tire 1, ax 3 wheel. Fork 5, load puller 6 and load 7 rest on continuously moving pneumatic belt 9, which is driven by driving 10 and driven 11 drums. In the zone of contact of the tire with a pneumatic belt, under the pneumatic belt there is a support frame I2 with rollers 13 on which the pneumatic belt rolls. The driven drum has a tensioning mechanism 14 for tensioning the same pneumatic belt. Dp is an increase in the strength of the pneumatic tape, it is reinforced with yarns 15. Leading bar 3, Stand according to claim I, characterized in that, in order to simulate wheel rolling along uneven ground and non-uniform soil, the pneumatic casing is divided by a hermetic transverse partitions into a number of sections, each of which equipped with independent ventilation.

0

five

0

five

0

five

2

The ban sits on a fixed support 16. The pneumatic belt sections are divided between themselves by transverse 17 and longitudinal 18 partitions. The kaekda section of pneumatic tape is equipped with a valve 19.

Tests are performed as follows.

After installation of the wheel with the test tire 1 on the stand, pressure control is performed in the sections of the pneumatic belt 9, the necessary mode is set. Then turn on the drive stand. The pneumatic belt 9 begins to roll on the reels 10 and 11. The wheel rolls along the belt 9 in one of the predetermined relims: driven, driving or braking. At the same time, it crushes the pneumatic tape 9 and rolls along pneumatic irregularities that mimic the heterogeneity of the soil. If necessary, additional temperature irregularities in the form of obstacles moved by the wheel can also be installed on the pneumatic coupling. The bench can be used to study the smoothing ability of a tire under conditions as close as possible to operational conditions, taking into account the deformability of soils.

The presence of a partitioned pneumatic tape, which acts as a supporting surface, makes it possible to vary its stiffness parameters within wide limits, thus imitating the properties of deformable soils and their heterogeneity. This greatly expands the functionality of the proposed stand.

Editor S. Lisin

Compiled by G. Mishnev

Tehred 3.Paly Proofreader I.Musk

Order 8518/43 Circulation 896 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch ShSh Patent, Uzhgorod, st. Project 4

deyo.z

Claims (3)

/ 57) 1. STAND OF THE DAY OF TESTING OF STUPS * OF MATHIC TIRES, containing drive drums covered by a flexible tape for installing a test wheel on it, a device for installing and tensioning the tested wheel, supporting elements installed under the flexible tape in the area of its contact with the tested a wheel, and measuring elements, characterized in that, in order to expand its functionality by simulating the movement of the wheel on deformable soil, the flexible tape is made in the form of a closed pneumatic shell with a valve for changing tion of internal air pressure. 2. Stand by π. 1, characterized in that, p. In order to simulate the interaction of the wheel with various types of soils, the pneumatic casing is divided by sealed longitudinal partitions into a series of sections, each of which is equipped with an independent valve. 3. The stand according to claim 1, characterized in that, in order to simulate wheel rolling along irregularities and inhomogeneous soil, the pneumatic casing is divided by sealed transverse partitions into a number of sections, each of which is equipped with an independent valve.