RU2235305C2 - Rail car test stand - Google Patents

Abstract

FIELD: railway transport; testing facilities.

SUBSTANCE: invention is designed for use in laboratories for revealing vibrations of cars similar to vibrations of cars in motion. Proposed stand is secured on concrete-lined trench equipped at top with coupling device for fastening car with built-in dynamometer for measuring horizontal forces in its frame. Stand is furnished also with rotary complex arranged on support in trench bottom. Rotary complex is made in form of crawler propulsion unit with engine and transmission, on each track of which sections of rail track with preset gauge for rail car tested in the open are installed. Bogies of car rest on rail track. Height of support for mounting rotary complex provides free sagging of crawler propulsion unit. Stand is furnished with vibrator suspended from car bottom through distributing beam. Points of application of load of said beam are near car body pivot bearings.

EFFECT: dispensing with additional load-lifting devices simulating forces acting on car under various on car under various operating conditions.

3 cl, 4 dwg

Description

The invention relates to the field of testing equipment and is intended to create in the laboratory vibration of wagons, similar to those that they experience when moving along the way.

A known stand for testing products for vibration, the design of which is protected by RF patent No. 2178877, G 01 H 7/02, application No. 99123596/28 of 10.11.99, It contains a vibration exciter with a table, an auxiliary table made in the form of a cube and attached to exciter table, a device for fixing the test products, mounted on the auxiliary table with the possibility of reorientation and fixing in three mutually perpendicular positions.

The disadvantages of the analogue include the fact that it cannot be used for testing cars.

A known stand for running in high-speed tracked vehicles of heavy capacity, protected by the USSR author's certificate No. 1430790, G 01 M 17/00, application No. 4213368 / 40-11 of 03/19/87 OH contains a base mounted on the tracks of the tested vehicle, simulators irregularities and rollers mounted on the axles interacting with the caterpillar. The stand is equipped with running drums, the axles of the rollers are cranked with eccentricity and mounted on the inside of the track.

It is not possible to apply the design of the stand for testing cars, which should be attributed to the disadvantages of the analogue.

The prototype of the invention is a device for fixing a unit of railway rolling stock on a roller stand described in the official bulletin of the USSR "Discoveries, inventions ..." SU 472277, G 01 M 17/00 from 08.09. 1975

The device consists of stops mounted on stop beams, harness elements, a helical electric drive and a force measuring unit in the form of a disk equipped with strain gauges.

Each thrust beam is equipped with a rod movably mounted on it, one end of which is connected to the harness element (automatic coupler), and the other to a screw electric drive.

Thrust beams are mounted on stops with the possibility of movement in the direction of the longitudinal axis of the roller stand by means of stops and elastic comb beams made on the contact surfaces. The rim of the load-measuring unit is connected to the thrust beam.

The disadvantages of the prototype include:

- the complexity of operation of the rink stand itself, as the latter provides for the installation of a unit of railway rolling stock, such as a car, with additional lifting means;

- the complexity and unreliability in the operation of the design of the device due to possible malfunctions in the load cells.

The aim of the invention is to create a simple and reliable in operation test bench for cars, eliminating the additional use of lifting means, simulating the forces that act on the car under various modes of operation.

The essence of the invention lies in the tone that as a rotational complex of the stand mounted on a pedestal of the bottom in a concrete trench, a caterpillar conveyor is used, which allows the test car to be rolled directly onto the stand directly from the railway access. The outdoor stand is equipped on top with a coupling device for securing the car with a dynamometer built in it for measuring horizontal longitudinal forces in its frame and vibrators mounted to the bottom of the test car through the distribution beam in the area of the trolleys, bringing the load points closer to the car's stays.

On the tracks of a caterpillar mover mounted with a transmission, incl. engine, on the frame of the caterpillar conveyor fixed sections of the rail track with a given track of the test car.

The height of the pedestal of the bottom of the concrete trench for installing the rotational complex provides free sagging of the caterpillar mover.

The invention is illustrated by drawings, where:

- figure 1 shows a longitudinal view of the test bench for the car;

- figure 2 is a top view of the test bench for the car;

- figure 3 - caterpillar propulsion stand;

- figure 4 is a section aa of the caterpillar propeller of the stand.

The test bench for wagons consists of a frame 2 mounted on the foundation 1 (Fig. 1), on which are mounted on-board drive sprockets 3 with a caterpillar mover 4, a transmission 5, supporting rollers 6 of the upper branch of the caterpillar mover 4, supporting rollers 7 of the lower branch of the caterpillar mover 4 , the mechanism of tension 8 caterpillar mover 4 with onboard non-drive sprockets 9.

An automatic coupler 10 with a built-in dynamometer 11 is installed on the stand. The stand includes vibrators 12 installed on a test car in the area of trolleys, a control panel 13 of the stand, and a section of the railway access line 14.

Transmission 5 consists of shafts 15 (FIG. 2) for installing on-board drive sprockets 3, couplings 16, gearbox 17, couplings 18 equipped with a brake 19, and an engine 20.

The caterpillar mover 4 is a closed transport belt and consists of connecting fingers 21 (FIGS. 3 and 4) 5, connecting links 22, tracks 23 installed in the last sections of the rail track 24.

The test car is as follows. The car is rolled along the access roads 14 onto the stand, while the carriage trolley caps are mounted on the rail 24, which is an integral part of the caterpillar mover 4, to the tracks 23 of which sections of the rail track 24 are fixed. The car is mounted on the stand by an automatic coupler 10 equipped with a dynamometer 11. Starting the engine through the transmission 5, the caterpillar mover 4 is rotated, which, through the rail sections of the path 24, rotates the caps of the carriage bogies. By changing the operating mode, the speed of the conditional movement of the car is changed. In this case, the control of the vibration of the car is controlled through the vibrator 12, and the force of perception of loads through the dynamometer 11.

The simplified design of the stand allows testing different types of cars at different speeds of the train.

Claims (3)

1. A test bench for wagons fixed in a concrete trench equipped on top with a hitch for securing the wagon with a dynamometer built into it for measuring horizontal forces in its frame, comprising a rotational complex located on a pedestal of the bottom of the trench, characterized in that the rotational complex is made in in the form of a caterpillar mover with an engine and transmission, on each track of which sections of the rail track are installed with a given track of the car tested in the open air, the carts of which I support tsya on the track. 2. The stand according to claim 1, characterized in that the height of the pedestal for installing the rotational complex provides free sagging of the caterpillar mover. 3. The stand according to claim 1, characterized in that it is equipped with a vibrator suspended from the bottom of the car through a distribution beam, the points of application of the load of which are close to the fridays of the car.

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