CZ354296A3 - Testing bogie for tilting body casing of railway wagon - Google Patents

Abstract

The invented testing undercarriage for tilting body casing of a railway vehicle contains adjusting wedges (9) that are in the testing undercarriage slidable and on which a cylinder cage (12) is suspended. A hydraulic cylinder (3), whose piston is coupled with a readout rider (6), is in contact via a dynamometric insert (1) and a centering plate (2) with said cylinder cage (12) bottom. Above the cylinder cage (12) there is guided above and beneath in the track vertical axis by a transverse guide (10) and a longitudinal guide (11) and a rail (5), whose center is secured on a joint axis of the dynamometric insert (1) and the hydraulic cylinder (3) by a support (4).

Description

Test bogie for tilting the wagon body of the wagon

Technical field

The invention relates to the problem of safety tests of railway vehicles against derailment, in particular when a railway vehicle is standing on a collapsed track.

BACKGROUND OF THE INVENTION

The prior art methods for carrying out railway derailment safety tests, in particular when the railway vehicle is standing on a collapsed track, have been based on the use of lifting devices which, in conjunction with load cells, have been placed under the bearing boxes of the vehicles. The lift control of the individual lifting devices simulated the torsional warping of the vehicle from the assumed failure of the track superstructure.

The tests carried out in the current manner are dangerous for the operating personnel with regard to the need for the operator to be handled and stayed under the lifted car, as there is a risk of slipping of the lifting device and thus damage to the tested wagon. Moreover, the applicability of this test method is considerably limited, since passenger cars and subway cars are difficult to handle, and trams cannot be measured in this way at all because of the impossibility of accessing suitable contact surfaces.

Moreover, the results of such tests are completely unsatisfactory in terms of the requirements of today's standards, such as ORE B 55 / RP8, especially in terms of measurement accuracy.

► ► ► · · · · • • • • · • •

SUMMARY OF THE INVENTION

The above mentioned drawbacks are eliminated by a test bogie for tilting the wagon body of the wagon, which is based on the fact that in the vertical axis of each wheel of the manipulated bogie of the measured car placed on the test bogie it is adjustable and controllable adjustable) with spaced bolts, hinged one cylinder cage. A hydraulic cylinder is supported on the bottom of each of them by means of a load cell and a centering plate. The piston of the hydraulic cylinder supports a rail-wheel washer which is vertically displaceable in the transverse and longitudinal guides and is structurally capable of following the transverse displacement of the wheels from the wheel axis caused by the inclination of the wheelset, whose vertical axis coincides with the common war.

The load cell insert has one bearing surface straight and the other a spherical one, allowing the centering plate to be tilted into which the hydraulic cylinder fits. This is centered relative to the roll cage and height-limited by a support, the total stroke length being determined by the design of the entire roll cage as required by the tests.

The advantage of the tests carried out on the test chassis is the elimination of the risk of loosening the tested wagon from the measuring and lifting equipment and thus maintaining safe conditions of the test run for the operator and the measuring object. At the same time, the stable arrangement of the meters keeps the requirement for high accuracy of performed measurements.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS The invention is illustrated in greater detail in the accompanying drawing in the side section of FIG. 1 and in front view of FIG. 2.

Example

DETAILED DESCRIPTION OF THE INVENTION

The accompanying drawing shows a cross-sectional view of a test bogie for tilting a wagon body of a railcar comprising a cage of a cylinder 12, which is suspended on adjusting wedges 9 in the axis of each wheel of a wheeled wheeled wagon measured on the test bogie. The adjusting wedges 9 are displaceable in the direction of the longitudinal axis of the test bogie and adjustable (adjustable) by spacers.

· ·! »» »» »» »

• ···! * '·· ····

A hydraulic cylinder 3 is supported on the bottom of the cylinder cage via a silo insert 1 and a centering plate 2, with the piston of which a reading slider 6 is connected to read the stroke length of the hydraulic cylinder 3 on the reading sensor 7. which is vertically displaceable in the transverse guide (Π) and the longitudinal guide (J) and, by its design, is capable of following the transverse displacement of the wheels from the track axis resulting from the inclination of the wheelset, the vertical axis being identical to

3. The load cell insert 1 has a flat surface, a second spherical surface and is supported by a centering plate 2 having a corresponding counter-shape of the bearing surface. In its upper part there is a recess in which the hydraulic cylinder 3 fits with its support surface. The hydraulic cylinder 3 is centered with respect to the cage of the cylinder 12 and is defined by a height support

4, wherein the total stroke length is given by the design of the entire cage of the cylinder 12 as required by the tests.

The rolling stock to be tested is lifted and placed on the measuring bogies, and the whole group travels to the locations where the measurements will be made. Here, the wheels of the test vehicle are leveled (leveled) by moving the adjusting wedges 9 and simultaneously moving the cage of the cylinder 12 vertically. After connecting all the measuring instruments, power sources and pressure oil, lifting, supplying the pressure oil to the hydraulic cylinders 3 according to the exam program. The course of the force required to lift the car is measured by means of a load cell t The piston ejection of each hydraulic cylinder 3 is measured and therefore the lift of the car wheels is measured by a readout sensor 7. The hydraulic circuit controls are located in a housing inside the chassis. The control system makes it possible to adjust the lifting and lowering speeds of the individual hydraulic cylinders 3 and, consequently, of the wheels of the test vehicle, according to a specified measuring method. The data obtained during the measurement are stored in the memory of the personal computer and the test is then evaluated.

Industrial applicability

By using the test bogie for tilting the wagon body of the wagon, very accurate results are achieved in performing the required test. At the same time, conditions are created for the safe conduct of the test both in terms of the operator and the equipment used and the test vehicle. These bogies can also be advantageously used as wheel scales.

Claims (3)

PATENT CLAIMS, i. (ii) A test carriage for tilting the rail car body, characterized in that a roller cage (9) is suspended on the adjusting wedges (9), which are movable along the longitudinal axis of the test carriage, 12), on the bottom of which a hydraulic cylinder (3), whose piston is coupled to the reading slider (6), is supported over the silicon insert (1) and centering plate (2), which is guided above the cage in the vertical track axis by the guide (10) and the longitudinal guide (11) the rail (5), by its constructional arrangement, to follow the transverse deflection of the wheel towards the track axis caused by the inclination of the wheelset of the measured wagon and centered on the common axis ) with the support (4). A test bogie for tilting a wagon body according to claim 1, characterized in that one surface of the silicon insert (1) is flat and the other surface is spherical, the load cell insert (1) being inserted into the corresponding cut-out for one of them. fits into the bottom of the centering plate (2), into whose upper part the hydraulic cylinder (3) is recessed. A test bogie for tilting a wagon body according to claim 1 and 2, characterized in that the hydraulic cylinder (3) is centered with respect to the cage of the cylinder (12) and delimited by a support (4), the total stroke length being _: rollers (12), as required by the tests.