SU1643981A1 - Bench for testing vehicles - Google Patents

Abstract

This invention relates to a transport engineering industry and can be used for life tests of vehicles. The purpose of the invention is the expansion of functional possibilities 1 $ f): 14 stages. The supporting drums are placed inside a vertical contour formed by endless chains 5, kinematically connected to autonomous drives 14, 17. On endless chains 5 eccentric rollers 6 are pivotally mounted. During rotation of drives 14, 17, rollers 6 move under the vehicles support drums mimic the impact of road irregularities. With the help of autonomous drives 14, 17, the phase mismatch of the movement of the left and right side rollers 6 is provided. 2 з п.ф-л, 5 Il. / 3

Description

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This invention relates to a transport engineering industry and can be used for life tests of vehicles.

The purpose of the invention is to expand the functionality

FIG. 1 shows a stand with a treadmill, made in the form of successively arranged support drums, side view; in fig. 2 - the same, top view; in fig. 3 shows the node I in FIG. 2; in fig. 4 - stand with supporting drums, kinematically interconnected, side view; in fig. 5 - the same, with the supporting drums, kinematically connected with the drives, side view.

The bench contains left 1 and right 2 treadmills, made in the form of articulated on the base 3 and successively arranged support drums 4, simulators of road irregularities, which are made in the form of endless chains 5, arranged in pairs in parallel to one another on both sides of the left 1 and right 2 treadmills, and rollers 6, pivotally mounted with eccentricity by means of crank shafts 7 on endless chains 5 and located above support drums 4 with the ability to interact with them Endless chains 5 meshed with left leading 8 and driven 9 asterisks, and right driving 10 and driven with 11 asterisks. The left drive sprockets 8 are rigidly connected to the shaft 12, kinematically connected via a gearbox of 13 gears to the left drive 14. The right driving sprockets 10 are rigidly connected to the shaft 15, kinematically connected through a gearbox of 16 gears to the right drive 17. Support drums 4 are located inside the vertical a contour formed by endless chains 5, which, by means of supporting wheels 18, rest on longitudinal guides 19 and 20 fixed on the base 3, for carrying out tests of vehicles 21 having non-driving wheels , The pair of support reels 4, left and right treadmills kinematically interconnected flexible transmissions 22 (FIG. 4). To test the trailers, the support drums under the front and rear wheels of the trailer are additional left (not shown) and right 23 gears kinematically connected with left 8 and 9 and right 10 and 11 asterisks. The vehicle 21 is held on the treadmills by spacing 24 attached to

fixed racks 25. The left and right drives are connected to the remote control 26 controls. The stand works as follows. When testing a self-propelled vehicle 21 (Fig. 1}, its engine is started and the thrusters are rotated. From the control panel 26, the left 14 and right 17 drives turn on and their back speeds are set. When water 0 and 14 are set through gears 13 and 16 and the shafts 12 and 15 drive the sprockets 8 and 10, which are engaged with the chains 5, to rotate. The latter, resting the supporting wheels 18 on the longitudinal guides

5 19 and 20, crank shafts 7 with rollers 6 are set in motion along a locking contour. Interacting with the working surfaces of the supporting drums 4, rollers 6 have a mechanical effect on

0 vehicle propulsion devices 21. The amplitude of these impacts is determined by the diameter of the rollers 6 and the current ordinate profile of the running surface of the treadmill, horns, and the frequency by the number of rollers 6 and

5 the speed of rotation of the shafts 12 and 15 set by the drives 14 and 17. The degree of asynchrony of the action of the rollers 6 on the left and right propellers is determined by the initial displacement of the rollers of one side relative to another and the current variation of this displacement as a result of adjustable misalignment of the angular velocities of rotation of the left 8 and right 10 leading stars from autonomous drives

5 14 and 17.

In tests of self-propelled wheeled vehicles with driving and non-driving wheels (Fig. 4), non-driving wheels are rotated

0, cooperating with them supporting drums 4, which by flexible gears 22 are kinematically connected with supporting drums driven by the driving wheels of the vehicle.

When testing trailers and self-propelled wheeled vehicles with the gear lever in the neutral position and disengaged |

0 wheels imitating the movement of a vehicle is carried out by rotating the wheels from support drums 4, kinematically connected by additional left and right 23 gears with left 8 and 9 and

5 with right 10 and 11 asterisks (Fig. 5).

Thus, in the proposed stand, due to autonomous regulation of the speeds of movement of the rollers 6 of the left and right sides, the functionality of the stand expands.

Claims (3)

Claim 1. Vehicle test bench comprising base, left and right treadmills hinged on the base to accommodate the left and right sides of the vehicle, left and right drives mounted on the base, and road bumps simulators, distinguished by that, in order to extend the functionality, the simulator of road irregularities is made in the form of infinite chains arranged in pairs in parallel one another on both sides of the left and right tracks and gearing, respectively, with left and right drive and driven stars, rollers, shzrnirno set with eccentricity on endless chains and placed above the treadmills with g Sss GT g f ° t  five 5 I 5 W the possibility of contact with them, while the left and right drive sprockets are kinematically connected, respectively, with the left and right drives, and the treadmills are placed inside a vertical contour formed by endless chains. 2. A stand according to claim 1, characterized in that on the base there are fixed longitudinal guides for engagement with support wheels pivotally mounted on endless chains. 3. A stand according to claim 1, characterized in that it is provided with additional left and right gears, the input links of which are kinematically connected to the left and right driving and driven stars, respectively, and the weekend links to the left and right treadmills. 15 / Ss t  five 5 I 5 W Fy j th . Fig 3 75 Fig 518 5