SU759368A1 - Railway vehicle body side support on carriage - Google Patents

Description

The invention relates to railway transport and relates to the design of the nodes of the bearing body on the frame of the truck of the vehicle.

Known side supports, in which cumulatively used in the form of balls, placed between the bearing inserts with spherical bearing surfaces, elastic elements and an oscillation damper with adjustable friction force [1].

In this design, the restoring force is the same in all directions, which does not allow a comprehensive solution to the problem of reducing the impact on the path in straight and curved sections.

Closest to the invention is a body support comprising a housing mounted on a trolley with upper and lower plates disposed there, between which rolling elements are located, and an elastic element mounted between the support body and the upper plate [2].

In this design, the restoring force is also the same in all directions and, as in the first case, does not allow the complex solution of the problem of reducing the impact on the path in straight and curved sections.

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The purpose of the invention is to reduce the dynamic impact on the track and improve the ride quality of a rail vehicle.

This is achieved by the fact that the elastic element is made in the form of a rubber-metal spring, rigidly connected with the upper side with the body, the lower one with the upper base plate and a limited conical element rigidly fixed on the body. The radial clearance between the side surfaces of the lower side of the rubber spring and the base of the conical element can be equal to the maximum relative ratio in the transverse direction, and the rolling elements can be made in the form of rollers whose axes are parallel to the radius connecting the ¹⁵ geometric center of the support and the center of rotation of the cart.

Such an arrangement of lateral support provides cushioning body lateral oscillations in the transverse direction due to de formation rubber-spring ₂₀ and low resistance to angular rotation of the carriages due to rolling rollers on the baseplate, which ensures reduction of exposure to vehicle

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way and improved ride quality in straight lines and curves. . ..

FIG. 1 shows a lateral support, cross section; in fig. 2 - the same, side view.

On the bogie frame 1 is rigidly fixed lower support plate 2 on which opira- ⁵ are two rollers 3, whose axes are parallel to the radius, connecting the geometrical center of the support carriage and the center of rotation. The rollers are interconnected clip 4.

On the rollers rests upper support plate 5.

The weight of the body 6 is transmitted to the upper support plate 5 through the rubber-metal spring 7, the upper side rigidly connected with the body, and the lower side - with the upper support plate 5. ^1ί

To limit the transverse deformation of the rubber-metal spring is placed in the hollow conical element 8, rigidly mounted on the body.

Radial clearance between the side surface ₂₀ po- rubber-spring and the lower base of the conical member is equal to the maximum value possible transverse displacement body.

When the trolley is angularly turned relative to the body, the support plates 2 and 5 are displaced relative to each other in the direction of the tangent, drawn from the center of the king pin through the geometric center of the support, only due to rolling over the rollers.

When the body is carried in the transverse direction, only the elastic deformation of the rubber-metal spring occurs, which ensures the damping of these vibrations.

Thus, due to the separate operation of the rubber-metal spring and rolling elements, depending on the nature of mutual displacements of the body and the trolley, the proposed side support of the body on the trolley

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provides low resistance to the carriage rotation when fitting in the curves and damping of lateral vibrations, which comprehensively reduces the impact on the path in the curves and straight lines and improves the driving characteristics of a railway vehicle.

Claims (3)

Claim 1. Side support of the body on the trolley of a railway vehicle, containing a lower support plate rigidly mounted on the frame of the trolley, an upper support plate connected to the body, rolling elements between these plates, and an elastic element, characterized in that, in order to reduce dynamic impact on the way and improvement of road performance, the elastic element is made in the form of a rubber-metal spring, rigidly connected with the upper side with the body, the lower - with the upper base plate, and on the body there is a conical shaft The element limiting the movement of the spring. 2. Bearing on π. 1, characterized in that between the side surfaces of the spring and the conical element is formed a gap equal to the maximum value relative to the body in the transverse direction. 3. Bearing on PP. 1 and 2, characterized in that the pump bodies are made in the form of rollers, the axes of which are parallel to the radius connecting the geometric center of the support and the center of rotation of the trolley.