SU914961A1 - Stand for testing wheel and track laying machines - Google Patents

Description

The invention relates to the testing of vehicles, mainly wheeled and tracked vehicles.

A stand for testing vehicles is known, containing a frame mounted on the base with guides covered by a track chain, the frame being made with the possibility of oscillation around the longitudinal and transverse axes [Ϊ].

However, this stand does not provide testing of tractors in mountain conditions in combination with obstacles.

Also known stand for testing wheeled and tracked vehicles, containing mounted on the base of the frame with guides, equipped with artificial obstacles endless chains with rollers based on the guides, ₂₀ and drive chains [2].

However, this stand is designed for testing wheeled and tracked vehicles in flat terrain, since

2

, he does not have a slope of the machine that simulates its movement in the mountains.

The purpose of the invention is to expand the functionality by providing imitation tests in mountain conditions.

This goal is achieved by the fact that the frame is installed on the base with the possibility of swing around the transverse axis and is connected by one of the ends. With the crank swing mechanism installed on the base, artificial obstacles are made in the form of carts hinged to the chain, while the stand is equipped with rotationally driven drive chains eccentric rollers that interact with the carriages mentioned, and the fact that eccentric rollers are made with varying eccentricity.

FIG. 1 shows a common stand

view; in fig. 2 - the same in terms of; on

FIG. 3 - treadmill in magnified /

3 914961 4

scale; in fig. 4 - section А-А to its position depending on the IEF " ¹ " · 3. changing the direction of the slope. When

The test bench for wheeled and tracked vehicles contains frame 1 with fixed supports 2 and 3, 5

on which are mounted the traction chains 4, the envelopes of the tension and drive sprockets 5 and 6, mounted on the shafts 7.

Shafts 7 are connected through differential 8, chain transmission 9 and gearbox 10 10

with an electric brake mechanism 11. Carts 12 are hinged to the chain 4, which form a closed loop on the frame and thereby create a continuous treadmill. ,five

To move the trolley 12 using rollers 13 on the frame 1 are located guides 14. Frame 1 with supports 2 and 3 are suspended from two sides on axles 15 and 16, which in turn, _{20 are} mounted on racks 17 in slide bearings. On axis 15, a crank mechanism 18 is fixed, which via gearbox 19 and worm gear 20 is connected to electric motor 21. On both sides of frame 1 are placed dampers 22, which, when stationary, frame 1 work as additional locks. Under the treadmills there are eccentrics _30, 23 which are driven through chains of 4 gears 24 from shafts of sprockets 5 and 6 and act on trolleys 12. Rollers 25 are located on the stand to support and move the lower part of the treadmill, and for fixing the test object on the bench is designed stationary stand 26. Restriction of the free movement of the carriage 12 relative to the chain 4 is made using tension springs 27.

I

The stand works as follows.

The test machine is mounted on running tracks and fixed to rack nepod- ⁴⁵ Vision 26. Electric brake mechanism 11 through a gearbox 10, a chain transmission 9, differential 8, the shafts 7 and drive sprockets 6 together with the traction motor of the machine causes the chain 4 and thus running tracks in rotation. The electric motor 21 through the gearbox 19 and the worm gearbox 20 drives the crank mechanism 18, which in turn rotates the frame 1, and ultimately the test machine, which when swinging ^changes

The drive and driven sprockets 5 and 6, the eccentrics 23 begin to rotate with them and through the carts 12, which have the possibility of vertical movement relative to the chain 4, act on the wheel or tracks and imitate uneven terrain.

Road obstacles are created by the action of an eccentric 23, 3κοπθη · γ which can be adjusted in any known manner. A pair of eccentrics are placed under each wheel of the test object, which, through a chain drive, are rotated from the corresponding shaft of the drive or driven sprocket of the stand. The position of eccentrics relative to the chassis of the test object can be adjusted. When the eccentrics rotate, the pushes act on the copses or caterpillars, imitating the movement of the machine on the surface with stones or tubercles, and depending on the test conditions, the magnitude of these pushes (displacement amplitude) can be changed by adjusting the eccentricities of eccentrics 23.

The bench allows you to experience wheeled tractors of thrust classes from 6 to 30 kN and tracked tractors of thrust classes from 20 to 60 kN within the range of a tilt of 25 °. The frame rolling frequency as well as the linear movement speed of the treadmill can also be adjusted.

When tested on the bench, you can fix the main traction characteristics of machines, and check the system of their stabilization.

Claims (2)

Claim 1. Stand for testing wheeled and tracked vehicles, containing a frame with guides mounted on the base, endless chains equipped with artificial obstacles with rollers resting on the guides, and drive chains, characterized in that, in order to extend the functionality by providing simulated tests in mountainous conditions, the frame is installed on the base with the possibility of swing around the transverse axis and is connected by one of the ends with the crank swing mechanism mounted on 914961 6 the basis, artificial obstacles are made in the form of carriages hinged to the chain, while the stand is equipped with eccentric rollers, which are driven by the rotation of the drive of the chains, interacting with the said carriages. " ·· " 2. Stand on π. 1, characterized in that eccentric rollers are made with varying eccentricities. '.