SU1357291A2 - Body-to-railway vehicle bogie underframe support assembly - Google Patents

Description

11.357291

The invention relates to railway transport, relates to the construction of body connections to the frames of carriages of railway vehicles and is an improvement of the invention according to the author. St. No. 1085875.

The purpose of the invention is to increase the speed of the vehicle and to improve the comfort conditions on the IQ curved track sections.

FIG. 1 shows the body in the assembly leaning on the carriage, cross section; in fig. 2 is a kinematic diagram of the relative position of the elements of the body support assembly 15 with the lateral structure of the bolster relative to the carriage.

Body assembly 1 on frame

When jumping, all springs and side supports have axial deformations of the same sign.

When rotated in plan, the left spring and lateral support have transverse deformations of opposite sign compared to the Right spring and lateral support; moreover, since the distance between the springs is less than the distance between the supports (a b), then the lateral deformation of each spring the absolute value is less than the lateral deformation of the lateral support.

When rolling to the side, the left spring and side support have axial deformation of the opposite sign compared to the right spring and side support, while, since a, then axial

trolley 2 consists of springs (elastic 20) Deformation of each spring by absolute elements 3 and side supports A installed in one transverse plane passing through the middle of the base of the trolley. When this spring is placed in the space between the side supports. (a b)

The springs are fixed on the body by the projections 5, on the trolley frame by the projections 6. The side supports 4 are made in the form of spring-loaded telescopic glasses and contain springs 7 placed between the lower 8 and upper 9 guide cups. , Glasses 8 and 9 are connected by spherical hinges 10 and 11, respectively, with the frame of the trolley 2 and the body 1.

The hinge 11 for coupling the side support 4 with the body 1 is placed in the recess 12 on the body and has the possibility of horizontal lateral displacement, while compressing the springs 13 and 14 installed with a preload. The middle part of the side support is connected by a hinge with a ha 15, connected by a second end with a two-arm lever 16, which with its midpoint is hingedly mounted on the bracket 17 of the frame of the trolley 2 between the side support and the spring and connected to the second end by means of the hook 18 with the body bracket 19 . To facilitate the assembly of the assembly and eliminate the initial slack, each of the g 18 gs are provided with a lanyard 20.

The body support unit on the frame operates in the presence of the following types of relative movement in the carriage: bouncing, side relative, turning in plan and side rolling.

35

This value is less than the axial lateral support information.

Thus, for all of the above types of movements in the crew

25 springs and supports have two types of information - axial and transverse, with the axial stiffness of the springs and the supports and the transverse stiffness of the springs are positive, and the transverse stiffness of the supports is negative.

Angles in terms of stiffness

body with a cart close to zero if

2 a

the ratio is inversely proportional to the ratio of the stiffness of the transverse shear of the springs and lateral supports. This null characteristic reduces the lateral forces of the ridge of the tire on the rail.

At the same time, the hinges 15 and 18 that are hinged to the body and support do not interfere with these movements.

When the body is lateral, under the action of, for example, centrifugal forces F in curvilinear sections of the path, the lateral displacement L of the body relative to the trolley will cause the springs 3 to bend and turn following the body of that side support 4, which is closer to the center of the curve. At the same time, the glands 15 and 18 associated with this support sag.

Removing the arm 19 of the opposite side of the body from the frame of the carriage 2 and the arm 17 will result in tension of the rod 18 and rotation of the two arms 1-6, which in turn will force the second side support 4 (located further from the center

40

45

50

55

When jumping, all springs and side supports have axial deformations of the same sign.

When rotated in plan, the left spring and lateral support have transverse deformations of opposite sign compared to the Right spring and lateral support; moreover, since the distance between the springs is less than the distance between the supports (a b), then the lateral deformation of each spring the absolute value is less than the lateral deformation of the lateral support.

When rolling to the side, the left spring and side support have axial deformation of the opposite sign compared to the right spring and side support, while, since a, then axial

0 The deformation of each spring is absolute5

This value is less than the axial side support information.

Thus, for all of the above types of movements in the crew

5 springs and supports have two types of information - axial and transverse, with the axial stiffness of the springs and the supports and the transverse stiffness of the springs are positive, and the transverse stiffness of the supports is negative.

Angles in terms of stiffness

body with a cart close to zero if

2 a

the ratio is inversely proportional to the ratio of the stiffness of the transverse shear of the springs and lateral supports. This null characteristic reduces the lateral forces of the ridge of the tire on the rail.

At the same time, the hinges 15 and 18 that are hinged to the body and support do not interfere with these movements.

When the body is lateral, under the action of, for example, centrifugal forces F in curvilinear sections of the path, the lateral displacement L of the body relative to the trolley will cause the springs 3 to bend and turn following the body of that side support 4, which is closer to the center of the curve. At the same time, the glands 15 and 18 associated with this support sag.

Removing the arm 19 of the opposite side of the body from the frame of the carriage 2 and the arm 17 will result in tension of the rod 18 and rotation of the two arms 1-6, which in turn will force the second side support 4 (located further from the center

0

five

0

five

Pa curve) turn relative to the hinge 10 towards the body. In this case, the movable hinge 11 of the support moves along the recess 12 across the body, compressing the spring 14. Due to the oncoming movement of the outer side support with respect to the rest of the elastic elements, the total horizontal transverse rigidity of the assembly becomes nonlinear, with the degree of elastic resistance of the body lateral displacements increases with increasing these movements.

The intensity of the increase in the river hardness can be changed by adjusting, for example, the ratios of the levers of the lever 16 by shifting the pulses 15 and 18 into the other holes of the lever.

Turning the support 4 towards the relative direction causes the vertical component of the compression force of its spring 7 to exceed a similar force effect on the body of the opposite support 4 (due to its greater inclination), as a result of which the recoil of torque increases, which is opposite to the tilting moment from the action on the body centrifugal force F, and reverse roll appears

body at an angle of y. Thanks to this, comfortable conditions are improved when passing curved sections with increased speeds.

Thus, due to the location of elastic elements and lateral supports in the same transverse plane with certain linear parameters of their mutual alignment, the angle between the body and the trolley frame is reduced to almost zero in terms of rigidity, and therefore, the wear of the ridges of the tires and rails is reduced.

On the other hand, thanks to the automatically performed rotation of one of the lateral supports towards the side of the body, it is possible to create a rational characteristic of the horizontal transverse rigidity of the assembly, namely, the smallest at the initial moment of body deflection and intensively increasing with its further transverse relation. In addition, the ability to automatically create a back roll of the body when the sideways relate allows you to increase the speed of passage of curved sections of the track without compromising comfort conditions.

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J3 8

FIG. 2

Claims (1)

BODY OPERATION BODY ON THE FRAME OF A RAILWAY VEHICLE TROLLEY by ed. St. No. 1085875, distinguished by the fact that, in order to increase speed, vehicle movement and improve comfortable conditions on curved sections of the track, the upper supports are spring-loaded relative to the body in the horizontal transverse direction, and the lower support is connected to the body by two rods pivotally connected with the ends of a two-shouldered lever fixed by a midpoint on the frame of the trolley from the side of the elastic elements. > 14)