RU99413U1 - CONNECTION UNIT OF LONGITUDIN AND END BEAM OF THE METRO WAGON TROLLEY FRAME - Google Patents

Abstract

The frame of the subway carriage consists of two longitudinal 1, two end 2 and one transverse 3 box-shaped beams rigidly interconnected. Thus, the frame of the trolley contains four nodes connecting the longitudinal 1 and end 2 beams. The box-shaped shape of the longitudinal beams 1 consists of an upper 4, a lower 5 horizontal shelves and an inner 6 and an outer 7 vertical walls. The box shape of the end beams 2 consists of an upper 8, a lower 9 horizontal shelves and an inner 10 and an outer 11 vertical walls. The vertical walls 10, 11 of the end beam 2 are welded to the inner vertical wall 6 of the longitudinal beam 1. The ends of the inner vertical walls 10 of the end beams 2 are located at an angle of 45 ° to the inner vertical walls 6 of the longitudinal beams 1, and are welded to them with a fillet weld. The outer vertical walls of 11 end beams 2 are welded to the inner vertical walls of 6 longitudinal beams 1 with a T-joint. The horizontal shelves 4, 5 of the longitudinal beams 1 are connected end-to-end with the horizontal shelves 8, 9 of the end beams 2 with welds on the remaining linings located behind the plane of the inner vertical walls 6 of the longitudinal beams 1 in the direction of the longitudinal axis X-X of the trolley frame so that the length of the upper horizontal the flanges 8 of the end beam 2 are greater than the length of its lower horizontal shelf 9. The technical result when using the utility model is to increase the reliability in operation of the joints of the longitudinal and end beams by increasing strength and manufacturability. 4 ill.

Description

The utility model relates to the field of a railway vehicle and relates to the construction of railroad carriage trolleys, namely, subway carriage carriage frames.

A known frame of a railroad vehicle trolley containing box-shaped longitudinal and transverse beam connection nodes welded from four sheets: upper and lower horizontal shelves and vertical walls (ed. Certificate. No. 887321, IPC B61F 5/00, 12/07/1981) .

This trolley frame does not contain end beams and cannot be used in subway cars, because refers to railway wagons.

The closest to the proposed utility model for the combination of essential features and purpose is a two-axle rail trolley for supporting adjacent bodies of articulated subway cars, the frame of which consists of longitudinal beams having nodes with a central beam and box-shaped end beams (US Pat. RF No. 2238202 for invention, IPC B61F 3/12, 10/20/2004).

The known trolley is non-motorized and does not ensure the reliability of the frame in operation when exposed to forces that create loads on the connection nodes of the longitudinal and end beams by moments arising, for example, from the engine and gearbox.

The technical result when using the claimed utility model is to increase the reliability in operation of the connection nodes of the longitudinal and end beams by increasing the strength and manufacturability.

The specified technical result is achieved by the fact that at the junction of the longitudinal and end beams of the frame of the subway carriage, in which the longitudinal and end beams are box-shaped, according to the proposal, the vertical walls of the end beams are welded to the inner vertical wall of the longitudinal beams, while the end of the inner vertical wall is the end the beam is located at an angle of 45 ° to the inner vertical wall of the longitudinal beam and is welded to it with an angular seam, and the outer vertical wall of the end beam is welded to the inner the vertical wall of the longitudinal beam with a T-joint, and the horizontal shelves of the longitudinal and end beams are connected end-to-end with welds on the remaining linings, located behind the plane of the inner vertical wall of the longitudinal beam in the direction of the longitudinal axis of the frame.

The utility model is illustrated by drawings.

Figure 1 shows the frame of the trolley subway car, General view.

Figure 2 shows the connection node of the longitudinal and end beams of the frame of the truck on an enlarged scale.

Figure 3 shows the remote elements B and C in figure 2.

In Fig.4 shows a section GG in Fig.2.

The frame of the carriage of the subway car (Fig. 1) consists of two longitudinal 1, two end 2 and one transverse 3 box-shaped beams rigidly connected to each other. Thus, the frame of the subway carriage contains four nodes connecting the longitudinal and end beams. The box-shaped shape of each longitudinal beam 1 (FIGS. 2, 4) consists of upper 4, lower 5 horizontal shelves and inner 6 and outer 7 vertical walls. The box-shaped shape of each end beam 2 consists of an upper 8, a lower 9 horizontal shelves and an inner 10 and an outer 11 vertical walls. In each node connecting the end beam 2 and the longitudinal beam 1, the vertical walls 10, 11 of the end beam 2 (Fig. 2) are welded to the inner vertical wall 6 of the longitudinal beam 1. The end of the inner vertical wall 10 of the end beam 2 is located at an angle of 45 ° to the inner vertical the wall 6 of the longitudinal beam 1, and is welded to it with an angular seam (figure 3, leader B). The outer vertical wall 11 of the end beam 2 is welded to the inner vertical wall 6 of the longitudinal beam 1 with a T-joint (Fig. 3, callout B). The horizontal shelves 4, 5 of the longitudinal beam 1 are joined end-to-end with the horizontal shelves 8, 9 of the end beam 2 (Fig. 4) by welds on the remaining linings located behind the plane of the inner vertical wall 6 of the longitudinal beam 1 in the direction of the longitudinal axis X-X of the trolley frame ( figure 1). The lower horizontal shelf 5 of the longitudinal beam 1 extends beyond the plane of the inner vertical wall 6 to the junction with the lower horizontal shelf 9 of the end beam 2 by 235 mm, and the upper horizontal shelf 4 of the longitudinal beam 1 extends beyond the plane of the vertical wall 6 to the junction with the upper horizontal shelf 8 end beams 2 by 155 mm. Thus, the length of the upper horizontal flange 8 of the end beam 2 is greater than the length of the lower horizontal flange 9 by 160 mm.

Longitudinal 1 and end beams 2 are assembled on a technological welding stand, based on the required geometric dimensions between the beams. After fixing the beams 1, 2 perform welding work. In the vertical plane, the vertical walls 10, 11 of the end beams 2 are welded to the inner vertical walls 6 of the longitudinal beams 1. The horizontal shelves 4, 5 of the longitudinal beams 1 are joined end-to-end on the remaining process linings with the horizontal shelves 8, 9 of the end beams 2, respectively.

Joints of longitudinal 1 and transverse, incl. end beams 2, the frame of the truck work under conditions of loading them with moments from skew-symmetric forces in the horizontal and vertical planes arising from traction and from the operation of the engine and gearbox. As a result of connecting by welding the ends of the inner vertical walls 10 of the end beams 2, located at an angle of 45 °, with the inner vertical walls 6 of the longitudinal beams 1 with an angular seam, and the outer vertical walls 11 with vertical walls 6 with a T-joint, and also by connecting the horizontal shelves 4 5 and 8, 9 of the longitudinal and end beams, respectively, end-to-end behind the plane of the inner vertical walls 6, the formation of fatigue cracks is prevented, which provides increased reliability in the operation of the joints tions of the longitudinal beams 1 and end beams 2 metro car bogie frames.

Claims (1)

A junction of the longitudinal and end beams of the subway carriage frame, in which the longitudinal and end beams are box-shaped, characterized in that the vertical walls of the end beams are welded to the inner vertical wall of the longitudinal beams, with the end of the inner vertical wall of the end beams at an angle of 45 ° to the inner vertical wall of the longitudinal beam and welded to it with a fillet weld, and the outer vertical wall of the end beam is welded to the inner vertical wall of the longitudinal beam with a T-weld, Moreover, the horizontal shelves of the longitudinal and end beams are joined end-to-end by welds on the remaining linings located behind the plane of the inner vertical wall of the longitudinal beam in the direction of the longitudinal axis of the frame.