SU1513387A1 - Bed for testing vehicles - Google Patents

Abstract

This invention relates to a transport engineering industry and can be used for testing flat and mountain tractors. The purpose of the invention is to expand the functionality. On base 1, a main swing frame 4 is installed, on which two side swing frames 11 with individual swing mechanisms are mounted. On the side frames 11, endless ribbons are mounted on which the test vehicle is mounted. A simulator of variable traction loads is placed between the support post 25 fixed on the main frame 4 and the vehicle frame. Under the upper branches of the endless belts, simulators of 26 road irregularities are installed. When the main 4 and side frames 11 are rotated together, the operation of the vehicle on transverse slopes with a complex microrelief is imitated. 1 hp f-ly, 5 ill.

Description

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3151338

The invention relates to the transport machinery industry and can be used for testing flat and mountain tractors. °

The purpose of the invention is to enhance the functionality. I

FIG. 1 shows a stand, side view; in fig. 2 - the same, top view; in fig. 3 is a view A of FIG. 2, in FIG. 4 10 section bb in fig. 2, side view; in fig. 5 - the same, top view.

On the base 1 there are fixed central pivot bearings 2, in which a central longitudinal axis 15 3 is installed, connected to the main frame 4 by means of mounting plates 5 and 6. On the main frame 4 there are lateral pivot supports 7, which can transversely move relative to the main frame 4 by means of a screw gear 8 and fixation in a predetermined position by means of a bolted joint 9. In the lateral pivot bearings 7, lateral longitudinal axes 10 are installed, connected to two lateral frames 11. On the lateral frames 11 are fixed s bearing supports 12, which are arranged shafts 13 and 14 mounted with the pulling 15 and 16 conductive vedu- wheels (sprockets) covered by endless belts, vshol- nennymi a chain 17 attached thereto. hingedly with carriages 18. In the movement of carriages 18, rollers 19 are unfolded-35 on rails 20 mounted on side frames. The drive sprockets 16 are kinematically connected with a power-brake device designed as hydraulic machines 21, the Main frame 40 is connected with a rotation mechanism made in the form of a hydraulic cylinder 22, the body of which is pivotally mounted on base 1, and the rod is pivotally connected to the main frame 4. The side frames 45 11 are connected with individual pivoting mechanisms, made in the form of hydraulic heads 23 and 24, the bodies of which are hingedly mounted on the main one. frame 4, and the rods are hingedly connected to 50 side frames 11. Support stand 25 is fixed on the main frame 4.

Road irregularities simulators contain rollers 26, eccentrically mounted on side frames 11 with adjustable eccentricity, kinematically connected by gears 27 to shafts 13 and 14. A pair of rollers 26 is placed at each wheel of the vehicle being driven. -24 are connected to the control valve 29 with program control.

A variable load simulator contains a main body 30, one end of which is fixed to a support post 25, and the other is provided with a guide pin 31. Inside the main body 30 an additional case 32 is placed, in which a circular rotary disk 34 is placed on bearings 33 with an eccentric 35 mounted on a shaft 36 mounted on bearings 37 mounted in the main body 30. The shaft 36 is kinematically connected to a drive motor 38, the additional body 32 is connected to a rod 39, at the end of which The spring 40 is installed, pressed by the nut 41. The end of the rod 39 with the spring 40 is enclosed by the casing 42 connected to the hitch of the test vehicle 28 The axial groove 43 is made in the auxiliary body 32, in which the shaft 36 is placed, and in the rod 39 an axial groove 44 in which the guide pin 31 is placed.

When working hydraulic machines

21 in the mode of the motors, the drive sprockets 16 are driven into rotation, the drive in rotation of the chain 17 with carriages 18. When the leading 16 and tensioning 15 stars of the dumps 14 and 13 rotate, the gears 26 are rotated by means of gears 27 and eccentrically mounted, imitating the effect of road unevenness on the wheels test vehicle 28,

During operation of hydraulic machines 21 in the mode of pumps, chains 17 are driven into rotation from the driving wheels of the test vehicle 28. With the main frame 4 horizontal and the pressure applied according to a certain program to the hydraulic cylinders 23 and 24, the side frames 11 under the wheels of the left and right sides of the test vehicle The means 28 are inclined at different angles, imitating the movement of flat tractors over a complex microrelief with preservation of the horizontal position of the skeleton.

When pressure is applied to the cylinder

22 main frame 4 tilts, by them, 511513387

ira the work of four tractors to the fullest

frame and mechanics imitators of extensions, he supports, a frame with moving we and fixing to two sides of decorated frames, two

pepper slopes. When the main A and side frames 11 are rotated simultaneously, the operation of the mountain tractors on the transverse slopes, the angle of inclination of which exceeds the limit angle of the lateral stability of the tractor, is simulated. To simulate the unevenness of the drag of the process gun, the drive motor 38 is rotated. At the same time, the eccentric 35, acting on the circular rotary disk FOR, creates in the rod 39

6

stand,

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A scroll-mounted mechanism of the main frame and simulators of road irregularities on the main frame5, which is characterized by the fact that, with the expansion of functionality, it is equipped with side hinge supports mounted on the main frame with the possibility of transverse movement relative to the main frame and fixing position, two lateral axes mounted in the side hinge supports, two lateral frames are connected

variable force transmitted through 15 with lateral longitudinal axles, double casing 42 to the trailer device is tested by individual mechanisms of the rotating vehicle 6.ta side frames relative to the main

In order to test the vehicles, and simulate variable traction loads associated with the skeleton of the vehicle under test and the support post, the bearings of the different gauge track lateral frames 11 are moved in the transverse direction by screw gears 8 and fixed in a predetermined position by bolted joints 9.

The supports and guides are mounted on the side.

2. Stand on Pa 1, differently, in the proposed stand, the conditions of work of the trans- port 25 are simulated, and also because the simulator of change of the tailor tool on transverse skatovyh loads contains the basics with a complex microrelief, body, one end of which extends the functionality

mounted on a support stand, and the other one provided with a guide pin, a half-stand.

Claims (2)

1. Vehicle test bench comprising a base, central pivot bearings fixed to the base, a central longitudinal axis installed in the central pivot bearings, a main frame connected to the central longitudinal axle, tensioning and driving wheels, gear-40 with additional housing, and casing, renewed in bearing supports and enclosed by endless belts, guiding, placed under the upper branches of endless belts, driving-braking devices, kinematically , connected to the front wheels with 1 wheels, the support legs and guides are mounted on the side. 2. Stand on Pa 1, which is also distinguished by the fact that the simulator of variable traction loads contains the main body, one end of which is 25 y and the fact that the simulator of variable load loads contains the main body, one end of which is mounted on a support leg, and the other is equipped with a guide pin; the additional housing, located inside the main body, is circularly rotated. a disk mounted inside the additional housing and brought into contact with an eccentric located inside the internal housing of the additional housing on a shaft mounted in bearings mounted in the main housing, a drive motor, kinematically connected to the shaft, a rod connected to a spring-loaded relative to the rod and connected to the skeleton of the test vehicle, and the shaft and directional finger are placed in axial 45 grooves, made respectively in the additional housing and the rod. 1 25 3   36 32 31 Ф11г, at Compiled by S. Belousko Editor N. Gunko Tehred A. Kravchuk Proofreader E. Lonchakova 1 Order 6075/45 Circulation 789 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5   fI 1 l  Rag.  one E Subscription