Locomotive frame

Abstract

FIELD: railway transportation.SUBSTANCE: locomotive frame comprises central longitudinal beams connected by a central power frame, longitudinal side beams connected to each other at the ends of the frame by tie boxes, and cross beams connecting the central and longitudinal side beams. The central power frame is made in the form of a beam cage comprising longitudinal and transverse beams. Under the central power frame there is a battery compartment, additionally connected to the longitudinal side beams using stiffeners. The cross beams are additionally connected by longitudinal beams. The central longitudinal beams, cross beams and longitudinal beams connecting the cross beams are made U-shaped in cross-section, open towards the top, and the longitudinal side beams are made of box-shaped cross-section.EFFECT: increasing the functionality of the frame structure, increasing the rigidity of the central part of the frame and increasing its load-bearing capacity.1 cl, 2 dwg

Description

[0001] The invention relates to railway vehicles, namely to locomotive frame designs.

[0002] A known technical design of the TEM7 diesel locomotive frame (TEM7 diesel locomotive / A.V. Balashov, I.I. Zelenov, Yu.M. Kozlov et al.; edited by G.S. Melikdzhanov. -M .: Transport, 1989. - 295 p. ISBN 5-277-00 544-7, pp. 209-211) consists of two longitudinal I-beams, which are reinforced with upper and lower overhead belts, the ends of the longitudinal beams are connected to each other by welded tie boxes, in the longitudinal direction on the sides of the frame there are side channels, in the transverse direction the longitudinal I-beams and side channels are connected by partitions and deck sheets having cutouts of various shapes.

[0003] This frame design involves the use of I-beams as the main load-bearing elements. Frame structures containing such beams require additional reinforcement. Also, I-beams used for assembling locomotive frames have large standard sizes that manufacturers may not have, which can cause downtime in the production of such frame structures.

[0004] A known technical design of a frame for the 2TE116 diesel locomotive (Diesel locomotive 2TE116 / S.P. Filonov, A.I. Gibalov, E.A. Nikitin et al., 3rd ed., revised and enlarged. – M.: Transport, 1996. 334 p., UDC 629.424.12-83, pp. 139-140) comprises two center beams made of I-beams, which are reinforced with strips welded to the lower and upper shelves and fastened with tie boxes, which are welded to the lower reinforcing strips. Frontal sheets are welded to the rear and front ends of the center beams, against which the tie boxes rest with their shoulders. The ridge beams are connected to each other by transverse diaphragms; in the middle part of the frame, in the place of its greatest load (installation of the diesel engine, fuel tank, batteries), two trusses are welded into the frame, each of which is a trapezoidal welded box structure, divided by diaphragms into compartments in which niches for batteries are made; a supporting channel is welded along the perimeter of the frame.

[0005] This frame design also involves the use of I-beams as the main load-bearing elements, which have the same disadvantages described earlier.

[0006] A wagon frame is known from the prior art (RU Patent for Utility Model No. 54886, priority dated 13.02.2006, published on 27.07.2006), which contains a backbone, pivot, transverse and lateral longitudinal beams rigidly connected to each other, and also between the pivot beams, transverse bulkheads discretely distributed along the length of the frame are rigidly attached to the central part of the frame, the lower parts of which are fastened with a pallet.

[0007] The center beam in this type of frame absorbs longitudinal forces from the automatic couplers. When transmitting traction and impact forces, an additional bending moment will occur, tending to deform the frame. For a locomotive frame structure, which bears significant vertical loads, as well as significant stresses at the pivot points, the discrete distribution of transverse bulkheads does not provide significant structural rigidity, making it unsuitable for locomotives.

[0008] The closest analogue is the frame of a rail vehicle (RU patent for invention No. 2028236, priority dated 02 / 28 / 1991, published 02 / 09 / 1995), containing center beams, side beams connected to each other by frontal and pivot beams, while the center beams are connected to each other by an elliptical truss located in the central zone of the frame, connected to the side beams.

[0009] The disadvantage of such a frame is the technological complexity of manufacturing such a structure; the ring or elliptical element in the central zone is connected by welding to the side and backbone beams, which further complicates the control of welded seams, and also causes additional problems in controlling the accuracy of welding, placing excessive technological requirements on the structure.

[0010] The technical result is the creation of a unified frame design with increased functionality, which would ensure increased assembly efficiency, as well as increased rigidity of the central part of the frame and an increase in its load-bearing capacity.

[0011] The technical result is achieved by a locomotive frame, which contains central longitudinal beams connected by a central load-bearing frame, longitudinal side beams connected to each other at the ends of the frame by tie boxes, and cross beams connecting the central and longitudinal side beams. The central load-bearing frame is designed as a beam cage containing longitudinal and cross beams. A battery compartment is located under the central load-bearing frame, additionally connected to the longitudinal side beams by means of stiffeners; the cross beams are additionally connected by longitudinal beams, wherein the central longitudinal beams, cross beams, and longitudinal beams connecting the cross beams are U-shaped in cross-section, open towards the top, and the longitudinal side beams are made of a box-shaped cross-section.

[0012] The central frame, constructed as a beam cage from longitudinal and transverse beams, provides a central load-bearing frame that can be manufactured and assembled separately. The beam structure can be assembled from sheet metal. This simplifies tooling, positioning, and geometric control during frame assembly.

[0013] The battery compartment, located under the central power frame, provides structural strength in its central section and supports the load-bearing capacity of the frame housing the diesel generator and fuel tank. Longitudinal beams connecting the cross beams increase the strength of the entire structure, allowing for even distribution of vertical loads.

[0014] The central longitudinal beams and cross beams are U-shaped in cross-section, open at the top, while the longitudinal side beams are box-shaped. The box-shaped cross-section of the longitudinal side beams ensures the rigidity of the outer frame chord, while the U-shaped central and cross beams allow the space created by the beam walls to be used for functional purposes.

[0015] This design of longitudinal and cross beams, combined with the central load-bearing frame's design as a beam cage, allows for a unified and functional frame structure. This design implements a modular construction principle during production, allowing for improved assembly efficiency of the entire frame.

[0016] The invention is explained by the following drawings.

[0017] Fig. 1 shows a top view of the frame.

[0018] Fig. 2 shows a side view of the frame.

[0019] The frame consists of two central longitudinal beams 1 connected to each other by a central metal frame 2. Cross beams 3 are welded to the central longitudinal beams, which are additionally connected to the side longitudinal beams 4. The side longitudinal beams are connected to each other at the ends of the frame by tie boxes 5 and end sheets. The central frame 2 is connected to the central longitudinal beams 1 and to the longitudinal side beams 4. The central longitudinal beams 1 are connected to the longitudinal side beams 4 by cross beams 3, wherein the central longitudinal beams 1, cross beams 3 are made U-shaped in cross-section, open towards the top, and the longitudinal side beams 4 are made of box cross-section. Longitudinal beams 6 additionally connect the cross beams 3, the longitudinal beams 6 have a U-shaped profile, open towards the top (Fig. 1).

[0020] Under the central frame 2 there is a battery compartment additionally connected to the longitudinal beams using stiffeners 8. The central frame 2 with two longitudinal power elements, reinforced by welded battery compartments, allows it to withstand the load from the diesel generator set and the fuel tank, and partially transfer it to the body due to the longitudinal side beams 4 (Fig. 2).

[0021] The invention is carried out as follows.

[0022] The central longitudinal beams 1 and the cross beams 3 are welded separately, the tie boxes 5 with end sheets are welded to the intermediate structure, and additional longitudinal beams 6 are welded between the cross beams. The central frame 2 is welded separately. Symmetrically executed intermediate structures are welded to the central metal frame, the longitudinal side beams 4 and the battery compartment 7 are welded to the general structure.

[0023] Longitudinal central beams 1 support the longitudinal loads from the automatic coupler through coupling boxes 5. Shock absorbers are located inside the coupling boxes 5. Pivot assemblies are installed in the longitudinal central beams 1, connecting the frame to the locomotive bogies, allowing for the transmission of traction and braking forces.

[0024] Due to the longitudinal side beams 4, part of the load is transferred from the frame to the locomotive body and thus the frame, together with the body and the cabin, becomes a single power structure.

[0025] The battery compartment 7, located under the central power frame 2, provides structural strength in its central portion and supports the load-bearing capacity of the frame housing the diesel generator and fuel tank. Longitudinal beams 6, connecting the cross beams 3, increase the strength of the entire structure by evenly distributing the vertical load.

[0026] The central longitudinal beams 1 and cross beams 3 are U-shaped in cross-section, open at the top, while the longitudinal side beams 4 are box-shaped. The box-shaped cross-section of the longitudinal side beams ensures the rigidity of the outer frame chord, while the U-shaped central and cross beams allow the space created by the beam walls to be used for functional purposes.

[0027] The central frame 2, constructed as a beam cage of longitudinal and transverse beams, provides a central load-bearing frame that can be manufactured and assembled separately. The beam structure can be assembled from sheet metal. This simplifies tooling, positioning, and geometric control during frame assembly.

[0028] This design of longitudinal beams 1, 4, 6, and cross beams 2, combined with the central load-bearing frame 2 in the form of a beam cage, allows for a unified and functional frame design. This design implements a modular construction principle during production, allowing for improved assembly efficiency of the entire frame.

Claims

A locomotive frame comprising central longitudinal beams connected by a central load-bearing frame, longitudinal side beams connected to each other at the ends of the frame by tie boxes, cross beams connecting the central and longitudinal side beams, characterized in that the central load-bearing frame is made in the form of a beam cage containing longitudinal and cross beams, a battery compartment is located under the central load-bearing frame, additionally connected to the longitudinal side beams by means of stiffeners; the cross beams are additionally connected by longitudinal beams, wherein the central longitudinal beams, cross beams and longitudinal beams connecting the cross beams are made U-shaped in cross-section, open towards the top, and the longitudinal side beams are made of box-shaped cross-section.

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