RU2688453C2 - Trolley of the railway two-storage passenger vehicle - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: trolley has a two-stage suspension. In the central suspension system, a stabilizing torsion device is used. It is located on the frame of the trolley in the space between the transverse beams of the frame. Torsion shaft is fixed by the ends in the bearings across the longitudinal axis of symmetry of the trolley. On the shaft levers are fixed, that are connected to the bolster by the suspension beam in the places of the lateral stops of the bolster. Fastening of suspension brackets to levers and bolster is carried out through spherical hinges. Suspensions of the stabilizer are located at an angle to the vertical and are tilted to the center by the upper hinges.

EFFECT: amplitude of the angular vibrations of the car in the transverse direction, the vertical rigidity of the springs of the carriage of the car and the vertical accelerations acting on the car body are reduced.

1 cl, 4 dwg

Description

The invention relates to passenger rail transport and can be used in the design of running gears of trams and railway rolling stock.

Requirements for the rolling stock to increase the comfort and durability of the elements of the car during the trip make it necessary to reduce the rigidity of the steps of hanging up the carriages of passenger cars. On the other hand, a decrease in the rigidity of the suspension entails an increase in the amplitude of the oscillation of the car body in the vertical and horizontal directions.

In modern designs of carriages of cars, torsion devices are used for damping the amplitude of oscillations in the transverse direction.

Known technical solution "Rail vehicle trolley" (RU 2220863 C2 B61F 5/00, 10.01.2004), which has a stabilizing device for lateral tilting of the car body, consisting of a torsion shaft, located along the bolster beam and fixed in bearings on the bogie frame. The arms pressed onto the shaft through vertical hangers are pivotally connected to the bolster. Also, the technical solution of a rail vehicle trolley includes a device for suppressing the high-frequency component of vertical oscillations and consists of elastic non-metallic elements having a different elastic modulus under static and dynamic loading, which are located in the central and axle suspension stages.

The disadvantage of the prototype design is the largest value of the vertical low-frequency accelerations of the car body. Also to the disadvantages of the prototype design is the fact that the horizontal lateral acceleration in the upper part of the body will be greater than when using the design of the trolley of the proposed option. All this adversely affects the comfort of driving passengers and the durability of the elements of the car.

The design of the prototype is less suitable for use as running gears of cars with a large mass of body and a high level of position of the center of gravity of the body (in particular, a two-story passenger car) than the proposed design.

The objective of the invention is to improve the quality of the stroke and the level of resistance to lateral vibrations of the car body.

The design of a wagon (passenger) trolley is proposed, which is intended for use as running gears of wagons with a heavy-weight body with a high level of center of gravity position. The design differs from the existing ones in that the torsion stabilizer of the lateral inclination of the body has inclined towards the middle of the suspension, which connects the levers of the stabilizing device to the bolster.

The essence of the invention is illustrated by drawings, which depict:

in FIG. 1 - a truck of a two-story passenger vehicle, side view;

in FIG. 2 - a trolley of a two-story passenger vehicle, top view, without a bolster;

in FIG. 3 - side tilt stabilizer;

in FIG. 4 - stabilizer operation during lateral displacement of the body.

The trolley of a rail double-deck passenger vehicle (Fig. 1, 2, 3) consists of a bolster 1, a frame 2, central suspension springs 3, vertical 4 (2 pcs.) And horizontal 5 (2 pcs.) Dampers, leashes 6 (2 pcs.) central suspension stage, torsion shaft of side stabilizer 7, friction bearings of stabilizer 8 (2 pcs.), stabilizer levers 9 (2 pcs.), inclined suspensions of stabilizer 10 (2 pcs.), axle box springs 11 (4 pcs. .) and leads 12 (2 pcs.), 13 axle boxes (4 pcs.), wheel pairs 14 (2 pcs.).

With lateral tilts of the body, the stabilizer shaft 7 is twisted elastically and creates a force that prevents this lateral tilt on the levers and tends to return the body to its original position (like the prototype model). In the case of a lateral displacement (relative) of the car body (Fig. 4), the elastic inclination to the opposite direction is carried out. This effect occurs due to the presence of the angle of inclination α of the suspensions 10 to the vertical (Fig. 3) and the relative displacement h and the twisting of the levers 9 with the shaft 7 (Fig. 4). In this case, on the levers 9, multidirectional forces RA and RB arise, which, through the suspensions 10, act on the bolster and tilt it in the opposite direction relative (Fig. 4). The total force of these two forces, Rc, tends to return the bolster to the equilibrium position (Fig. 4).

In the case of vertical oscillations of the body (galloping or jumping oscillations), the shaft 7 and the stabilizer levers 9 rotate freely in bearings 8 and the stabilizer does not participate in the running gear of the car (bogies) (as well as the prototype model).

This design of the stabilizing device allows to reduce the rigidity of the suspension of the trolley and, as a result, reduce the vertical acceleration of the body, reduce the horizontal acceleration in the upper part of the body.

Claims (1)

Trolley of a two-story rail passenger vehicle consisting of a bolster connected to the frame with springs, dampers (horizontal and vertical), central suspension leads, a torsion bar stabilizing device, which is supported on the axles of wheel pairs by means of axle box springs, axle leads and the axle hubs themselves, different the fact that the torsion device has inclined upper hinges to the middle of the suspension bolster.

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