SU1446007A1 - Link of locomotive body with cushioned portion of truck - Google Patents

Abstract

The invention relates to railway transport and concerns the construction of power links for the sprung part of a truck with a locomotive body. The aim of the invention is to increase reliability by reducing the galloping. The link of the carriage 1 with the body comprises a lever-rod device comprising a torsion bar 2, placed in bearings attached to the body frame and rigidly connected to the ends with horizontal transverse levers 4 connected by means of elastic hinges 5 with vertical rods 6, which opposite ends with the help of the hinge nodes 7 are connected with the sprung part of the cart. In the longitudinal direction, the cut-back part of the carriage 1 with the body is connected by means of an inclined rod 11. 2 Cp. F-ly. 5 il. (L

Description

ABOUT)

FIELD OF THE INVENTION The invention relates to railway transport and concerns the construction of assemblies for the crew part of locomotives.

The purpose of the invention is to increase reliability by reducing body galloping.

FIG. 1 is schematically depicted.

connection (in the longitudinal plane)

the broken part of the truck with the body of the locomotive, side view; in FIG. 2, the same, top view} in FIG. 3 is a view A of FIG. one; FIG. 4 is a section on BB in FIG. one; in fig. 5 shows a section B-B in FIG. 2

In the longitudinal vertical plane, the sprung part of the carriage 1 with the body (not shown) is angularly articulated using a lever-rod device containing a torsion bar 2 parallel to the longitudinal axis of the crew, placed in bearings 3 attached to the body frame and rigidly connected to the ends with horizontal transverse levers 4, connected by means of- | Stvom elastic hinges 5 with vertical rods 6, which are opposite ends with the help of hinges 7 connected to the sprung body part Each bearing 3, horizontal wishbone 4 and spacer 8 installed between them in the longitudinal direction are tightly clamped between the stop ring 9 and the nut 10. In the longitudinal direction the suspension part of the carriage 1 with the body (with its middle part ) connected by means of an inclined rod 11, which is connected with them by means of hinge assemblies 12 and 13. The axis of the inclined rod 11 passes through the center of mass of the sprung mass of the carriage 1 and crosses the level of the coupler in the middle of the body, and therefore Its angle of inclination is determined by the formula

2 (H-hi

where H - automatic coupling height above level

rail heads;

h is the height of the center of mass of the sprung mass of the trolley above the level of the rail heads; L is the base of suspension of the Kuzbva.

Each of the hinges 5 and 7 consists of silent blocks 14 and 15, sleeve 16

ci, arctg

ten

15

0

5 p. ic

50

35

thrust sleeves 17, bolts 18 and nuts 19. Silent blocks 14 are pressed into the lugs of the vertical rods 6, and the silent blocks 15 are pressed into the lugs of the horizontal wishbones 4 and into the lugs of the brackets 20 molded together with the cores of the engines. Sleeve 16 with silent blocks 14 and 15 forms a connection with tension. Silent blocks 14 and 15 in the axial direction are tightly clamped with the help of stop bushings 17, bolt 18 and nuts 19.

In order to compensate for technological deviations, the rods 6 and 11 are cut out from two parts and are interconnected, respectively, by adjusting clutches 21 and 22, fitted according to the type of connecting couplings of brake t.

A lever-rod device that combines a torsion bar 2, bearings 3, horizontal wishbones 4, hinges 5 and 7 and vertical rods 6 resists only the rotation of the sprung part of the trolley 1 in the longitudinal plane and thereby provides transmission from it to the body beefing overturned carts moment

M, 2F 2i,

where F is the power of gi of one wheel

locomotive pairs; D - wheel diameter in a circle

katani.

This is done as follows. When the sprung part of the carriage 1 is exposed to the impact of the pulling moment in the vertical rods x 6, the forces are directed oppositely. These forces tend to rotate the horizontal wishbones 4 in opposite directions. Therefore, there is a twisting of the torsion bar 2. Moreover, the forces acting in the vertical rods x 6,

Fdk

T7

P MI

 one.

and the torques transmitted by horizontal transverse levers 4 to the torsion bar 2

M

cr

 R.

where 1, is the length of the working part of the torsion bar 2 (the length of the section enclosed between the OCHWI horizontal wishbones A); a is the calculated length of the horizontal wishbone (the distance between the axis of the torsion bar 2 and the hinge 5).

Moreover, in bearings 3, oppositely directed vertical forces appear.

 R.

il

where Ij is the distance to the center of the bearings 3.

At the same time, the following conditions are met: М Р, - 1, Pj-la

and, therefore, there is a transfer of the trolley tilting moment of the trolley to the body, i.e., if there are specified lever-rod devices between the body and the sprung parts of the carts, the tilting moments of the carts are tilted and then perceived by independent support of the body and the sprung The parts of the carts on the wheel pairs through the spring suspension of the body will be transmitted to the wheel pairs in the form of vertical loads equally distributed between them.

The considered lever-rod device has practically no resistance to other types of mutual displacements of the body and the sprung part of the trolley 1. Indeed, with the vertical relative movement of the sprung part of the trolley 1, for example, up, the hinges 7, lifting up, pull the vertical rods 6 behind them, causing both horizontal wishbones 4 to turn the same angle around the axis of the torsion bar 2, consequently, a virtually free rotation of the torsion bar 2 in the bearings 3 occurs. With a horizontal transverse relative displacement of the body, the latter carries away the torsion bar 2, the bearings 3, the horizontal transverse The levers 4, which, by moving, hinges 5 behind them, cause both vertical rods 6 to turn at the same angle around the axis of the hinges 7. The rotation of the vertical rods 6 is accompanied by moving down the centers of the hinges 5 and, consequently, by turning same angle burn

the horizontal transverse arms 4 downward cause the torsion bar 2 to rotate in the bearings 3. In the first approximation, the angle of rotation of the vertical rods

where is the horizontal transverse movement of the body relative to the sprung part of the trolley 1; 1 - the estimated length of the vertical rod 6.

Since the silent blocks 14 and 15 in the angle form a joint of coaxial elastic elements, the rotation of the rod 6 relative to the horizontal transverse lever 4 is folded of two angles: the angle of rotation due to the angular deformation of the rubber bushings of the silent blocks 14 and the angle of rotation due to the angular deformation of the rubber bush of the silent block 15. When the total torsional stiffness of the two silent blocks 14 and the silent block 15 is equal, the twist angles of the rubber bushings are equal to 3/2, which leads to a decrease in the maximum tangential stresses t torsion rubber bushes silent-blocks twice.

Since the proposed technical solution is intended for a cart, which, apart from its other features, is characterized by the fact that the sprung part has no longitudinal force links with the wheel pairs, the inclined rod 11 between the carriage and the body transmits only the longitudinal inertial forces of the sprung carriage part. Moreover, due to the fact that the axis of the inclined rod 11 passes through the center of mass of the sprung part of the carriage 1 (it is obvious that the center of mass of the sprung part of the carriage lies noticeably lower than the center of mass of the traction motors, since a significant part of the mass of the mechanical brake is concentrated significantly below the latter), then the resultant power interactions between these parts of the locomotive crew passes through this point and, therefore, the sprung part of the trolley is not subjected to the action of the tilting in the longitudinal vertical the plane of the moment. However, the spring suspension of the cart is exposed to the vertical component

the force acting in the inclined rod 11, which as a result of this, depending on the direction of force in the inclined rod, bends up or down, and the sprung part of the carriage accordingly performs upward and downward movement. At the same time, due to the great flexibility of the spring base of the carriage (with independent support of the parts of the wheelset assembly) by spring suspension of the trolley is maintained very small compared to the traditional suspension of the body and the sprung part of the trolley, the weight (e If the carriage does not require the input of another carrier system), which, under comparable conditions, i.e. when the same static deflection is achieved, in the first case, the flexibility of the spring suspension of the trolley is several times greater.

Claims (3)

1. The connection of the locomotive body with the sprung part of the trolley, containing the body supports on the trolley located in the longitudinal vertical plane of symmetry of the locomotive inclined rod of adjustable length - Q e 14460076 and a lever-rod device, which is t-l and so that, in order to increase reliability by reducing the galloping of the body, the inclined rod is set at an angle about arctg 2iHlhi where H is the height of the coupler above the level of the rail heads; h is the height of the center of mass of the sprung part of the carriage above the railheads ;. L is the base of the suspension of the body, and the lever-rod device includes a longitudinally located torsion bar connected with transversely located levers, kinematically connected to the cores of traction motors. 2. A communication according to Claim 1, characterized in that the kinematic connection of the transverse levers with the electric motors, includes a rod of adjustable length, carrying elastic hinges at the ends. 3. Refer to item 2, which differs from the fact that the elastic hinges formed by rubber bushes arranged in series on the axis. /. YU 1446007 biE4 Fig.Z P FI.5