RU2326780C1 - Railway car backbone beam - Google Patents

Abstract

FIELD: transportation.

SUBSTANCE: railway car backbone beam consists of the two z-like sections between which, in cantilever, are fixed as a set the front and back stops. The front stop includes socket (4) located on the side of automatic coupler head and having an elongated upper shelf (11) accommodating support seats (5) receiving upper heads (6) of suspension brackets (7) on the lower heads (8) of which attached is centering bar (9) to make a support for automatic coupler shaft (10). The end face surface of front stop socket top shelf (11) is provided with a recess wider than the automatic coupler head surface width by the value sufficient to ensure the automatic coupler absorbing travel and to equal the increase in length of centering bar coupling length (12).

EFFECT: decreased wear of the centering bar support surface and the mating surface of the automatic coupler shaft.

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Description

The invention relates to railway transport and relates to the construction of spinal beams of frames of freight cars.

A spinal beam of a railway carriage is known, consisting of two zeta-shaped profiles, between which the front and rear stops are fully fixed along the cantilever parts of the beam. The front stop includes a socket with support sockets for the upper heads of the pendulum suspensions, on which a centering beam is hung, which serves as a support for the shank of the automatic coupler interacting with the traction clamp [I.F. Pastukhov, V.V. Lukin, N.I. Zhukov “Cars” . - M .: Transport, 1988, p. 171].

The head of the automatic coupler, containing the bulk of it, outweighs on the beam and with effort constantly presses the shank with the upper surface to the traction clamp. In operation, when moving the automatic coupler, the contact surfaces of the automatic coupler shank and the traction clamp are abraded, which leads to a reduction in the maintenance-free service life of these parts and is a structural drawback. At the same time, the automatic coupler during the movement of the rolling stock due to the action of traction forces and dynamic vibrations moves along the supporting surface of the centering beam, the longitudinal movement of which is limited by the grip, the total clearance in which should not exceed 5 mm.

Also known is the spinal beam with front stops, the sockets of which are extended (extended) towards the head of the automatic coupler, which made the automatic coupler hanger more favorable, reduced the efforts of pressing the automatic coupler shank against the traction clamp, which reduced wear on their interacting surfaces [V.P. Efimov, V. G. Belinovich, E. V. Abramov et al. “Promising automatic coupler for freight cars of a new generation” / “Heavy engineering” No. 8, 2005, p. 34].

This design is selected as a prototype.

A significant drawback is the possibility of using an absorbing apparatus with a stroke of up to 95 mm, which is ensured by a decrease in the course of the automatic coupler due to lengthening of the front stop socket. Using the device with a large stroke, and therefore with a higher energy intensity, leads to a hard hit of the head of the automatic coupler into the socket of the stop and their mutual damage.

The problem to which the invention is directed is to create a design of the spinal beam, which simultaneously provides a favorable weighting of the automatic coupler and allows the use of absorbing devices with a stroke of up to 120 mm.

The problem is solved as follows. Instead of lengthening the entire front stop socket, only its upper shelf is elongated, at the end of which a recess is made a width wider than the width of the back surface of the automatic coupler head and a depth sufficient to provide a stroke of up to 120 mm. At the same time, the gripping length of the centering beam is increased by a similar distance.

The essence of the claimed invention lies in the fact that the spinal beam of a railway carriage consists of two Z-shaped profiles, between which front and rear stops are fully fixed on the console parts of the beam. In this case, the front stop is equipped with an elongated upper shelf of the socket, on which support slots are made for hanging the centering beam with pendulum suspensions, and a recess is made on the end surface of the upper shelf of the front stop socket from the side of the automatic coupler. At the same time, the gripping length of the centering beam is increased by the size of the recess on the end surface of the upper shelf of the front stop socket.

The essence of the invention is illustrated by drawings, where:

Figure 1 - General view of the spinal beam;

Figure 2 is a side view of the front stop with an elongated upper shelf of the outlet and a suspended automatic coupler;

Figure 3 is a top view of the front stop with an elongated upper shelf of the outlet and a suspended automatic coupler.

The spinal beam consists of two zeta-shaped profiles 1, between which the front 2 and rear 3 stops are completely fixed on the console parts of the beam, designed to transfer shock and traction loads from the automatic coupler to the spinal beam and the frame of the car.

The front stop 2 includes a socket 4, located on the side of the head of the automatic coupler 15 and having an elongated upper shelf 11, on which support slots 5 are made for the upper heads 6 of the pendulum suspensions 7, on the lower heads 8 of which a centering beam 9 is hung, which serves as a support for the shank 10 of the automatic coupler . The elongated upper shelf 11 provides a more favorable weighting of the automatic coupler by reducing the shoulder "A" and increasing the shoulder "B", which reduces the friction forces arising at the contact point of the shank 10 of the automatic coupler and clamp 13. However, moving the place of suspension of the automatic coupler to the center of gravity is impossible by design parameters standard automatic coupler, as well as due to the need to keep the automatic coupler in a certain position, providing a limited distance from the axis of the automatic coupler to the rail heads. Along with this, the shoulder "A" must be at least the course "G" of the absorbing apparatus in order to ensure the stability of the automatic coupler when it is fully compressed. The fulfillment of these conditions when the absorbing apparatus is installed with a stroke of up to 120 mm is ensured by performing a recess “B” on the end surface of the upper shelf of the recess 14 while simultaneously increasing the gripping length 12 of the centering beam by the same amount.

The technical result from the use of the proposed technical solution consists in the fact that when using the elongated upper shelf of the front stop outlet, a favorable coupler circuit is retained, while the execution on the end surface of the upper shelf of the outlet from the side of the head of the automatic coupler recess provides the possibility of using an absorbing device with a higher up to 120 mm stroke, which improves the dynamic quality of the rolling stock.

Along with this, a favorable weighting is also ensured by the position of the centering beam, the movement of which along the longitudinal axis of the spinal beam is limited by the grip, the length of which is increased by the size of the recess on the end surface of the upper shelf of the front stop socket. Due to this technical solution, the vertical position of the pendulum suspensions in the free state of the coupler is achieved. In addition, it is possible to longitudinally move the automatic coupler together with the centering beam by the specified amount. This value is sufficient to prevent increased wear of the supporting surface of the centering beam and the counter surface of the shank of the automatic coupler, because longitudinal vibrations of small amplitude arise only when the rolling stock moves in a traction state - the ground state during movement.

At present, design documentation has been developed for this design, prototypes have been manufactured, and their comprehensive tests are being conducted.

The described design was developed on the initiative of the Applicant without performing work under a state contract.

Claims (1)

The spinal beam of a railway carriage, consisting of two Z-shaped profiles, between which the front and rear stops are fully fixed along the cantilever parts of the beam, while the front stop is equipped with an elongated upper shelf of the socket, on which support slots are made for hanging by means of pendulum suspensions of a centering beam with a grip, different the fact that on the end surface of the upper shelf of the front stop socket from the side of the automatic coupler head, a recess is made to a width greater than the width of the back surface the head of the automatic coupler, and to a depth sufficient to ensure the stroke of the absorbing device of the automatic coupler and equal to the increase in the length of the grip of the centering beam.

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