RU2391456C2 - Method for transposition of rails in continuous welded rail track in curvilinear sections - Google Patents

Abstract

FIELD: construction, road engineering.

SUBSTANCE: invention relates to railway transport and may be used to perform works on transposition of rails of railway track in curvilinear sections for prolongation of their service life. In process of transposition of rails in continuous welded rail track in curvilinear sections, cross sections of rails transposition start and end are defined, rails are unfixed, and devices that reduce forces of resistance to longitudinal motions of rails are placed under foot of transposed rails. Then initial cross sections of rails are moved to their new design position and fixed. Frames are charged to transpose rails, frames are connected with rigid links, length of links is controlled, moved by movable unit of frame for transposition of rails in direction from the start of transposition to its end. In process of transposition longitudinal forces are applied in direction from end of transposition to its start to transposed inner thread, and longitudinal forces are applied in direction from start of transposition to its end to transposed external thread. Devices that reduce forces of resistance to longitudinal motions of transposed rails are removed immediately after lifting of rails threads from gasket flanges, transposed sections of rails are fixed on underrail base, frames are discharged to transpose rails. Difference in lengths of rigid links are previously determined from the following ratio: ΔΔx = ±3.18x/R±0.795, m, where x - length of rigid link, which does not vary its length, m; R - radius of curve, m.

EFFECT: invention provides for improvement of efficiency, due to detection of accurate value of difference in length of each pair of rigid links in process of their length adjustment.

Description

The invention relates to railway transport and can be used in the production of work on the transfer of rail lashes of the railway track in curved sections to extend their service life.

There is a method of transferring rail lashes of a weld-free path in curved sections, which consists in determining the cross-sections of the beginning and end of lashing, unfasten the rail lashes, charge special frames for shifting rail lashes, connect these frames to each other and with a movable unit by flexible connections, move a movable unit with frames connected to it from the beginning of the lane to its end, is installed under the soles of the shifted rail lashes of the device, which reduce the resistance forces of their longitudinal displacement in the process of shifting the rail lashes to the beginning of the shift laid on the inner thread of the lash in the direction from the end of the lacing to its beginning, and to the beginning of the lash transferred to the external thread of the lash in the direction from the beginning of the latch to its end, they are removed after the end of the transfer of the rail lashes from - under the soles of the shifted lashes, devices that reduce the resistance forces to their longitudinal displacements fix the shifted rail lashes on a rail base (RF patent No. 2048010. A method of shifting rail lashes of a weld-free path in curved sections. Publ. 08/29/1994).

The disadvantage of this technical solution is the jamming of the frame supports in the flanges of the linings.

There is a method of transferring rail lashes of a welded jointless path in curved sections and a device for re-arranging rail lashes of a railway track, which consists in determining the cross-sections of the beginning and end of lashing, undoing the transferred rail lashes, charging the frames for shifting rail lashes, and connecting these frames to each other and with a movable unit by rigid ties, adjust the length of the rigid ties, under the sole of the shifted rail lashes, devices are installed that reduce the resistance forces to longitudinal movements of rail lashes, apply a longitudinal force in the direction from the end of the transfer to its beginning to the transferred internal thread, apply a longitudinal force in the direction from the beginning of the transfer to its end to the transferred external thread, move the movable unit with the frames connected to it from the beginning of the transfer to its at the end, remove devices that reduce the resistance to longitudinal movements of rail lashes immediately after lifting the threads of rail lashes from the flanges of the lining and fix the shifted relays cial runner on the rail base (RF Patent №2233932, IPC E01V 29/05. A method for transferring rail lashes of a welded jointless path in curved sections and a device for transferring rail lashes of a railway track. Author Zhulev G.G., publ. 08/10/2004, Bull. No. 22).

The disadvantage of this technical solution is the inability to accurately determine the magnitude of the measurement of the length of the rigid ties in order to prevent jamming of the frame supports in the flanges of the linings.

This technical solution is taken by the authors as a prototype.

The technical result of the invention is to increase the efficiency of the method by determining the exact value of the length difference of each pair of rigid bonds in the process of adjusting their length.

The specified technical result is achieved in that the difference in the lengths of each pair of hard bonds is determined by the formula:

,

,

where x is the length of the rigid connection, not changing its length, m;

R is the radius of the curve, m

A comparative analysis of the claimed method with the prototype shows that it differs from the known one in that it allows you to accurately determine the difference in the lengths of each pair of hard bonds.

Comparison of the claimed method with other technical solutions shows that the steps to accurately determine the difference in bond lengths are not known.

The proposed method of shifting rail lashes of a continuous joint in curved sections is implemented as follows:

- determine the location of the sections of the beginning and end of the lash;

- relocated rail lashes are exempted from ties with the base;

- set under the soles of the shifted rail lashes devices that reduce the resistance forces to their longitudinal movements;

- move the initial sections of the shifted rail lashes in their new design position and fix them;

- charge the frames for shifting rail lashes;

- connect the frames to each other and to the movable unit by rigid connections;

- adjust the length of the rigid bonds, determining the difference in their lengths according to the formula:

,

,

where x is the length of the rigid connection, not changing its length, m;

R is the radius of the curve, m;

- move the frame for moving rail lashes in a direction from the beginning of the lane to its end;

- in the process of shifting rail lashes, longitudinal forces are applied in the direction from the end of the lane to its beginning to the shifted inner thread, longitudinal forces in the direction from the beginning of the lane to its end to the shifted outer thread, and longitudinal forces are applied either to the end portions of the shifted rail lashes, or to the rail lashes themselves before shifting them;

- remove devices that reduce the resistance forces to the longitudinal movements of the shifted rail lashes after their rise from the flanges of the lining;

- fix the transferred sections of rail lashes on the rail base;

- discharge the frames for shifting rail lashes.

The proposed method of shifting the rail lashes of the welded jointless path will eliminate jamming of the frame supports in the lining flanges during the work, obtain uniform stress values in the laid rail lashes and reduce the required “window” duration for the work.

Claims (1)

The method of transferring rail lashes of the weld-free path in curved sections, which consists in determining the cross-sections of the beginning and end of lashing of the lash, releasing the transferred rail lashes, installing devices under the sole of the transferred rail lashes that reduce the forces of resistance to longitudinal movements of the rail lashes, and moving the initial sections of the shifted rails into their new design position and fix them, charge the frames for shifting rail lashes, connect the frames to each other and to movable unit with rigid ties, adjust the length of the ties, move the movable unit of the frame to transfer the rail lashes in the direction from the beginning of the lane to its end, apply longitudinal forces in the process from the end from the end of the lane to its beginning, and longitudinal forces in the direction from the beginning of the transfer to its end to the transferred external thread, remove devices that reduce the resistance to longitudinal movements of the transferred rail lashes immediately after lifting p lsovyh filaments of flanges chocks, fixed rail lashes transcribed portions on the rail base, to discharge the frame relaying rail lashes, characterized in that the difference in lengths of rigid links of pre-determined ratio

,
where x is the length of the rigid connection does not change its length, m;
R is the radius of the curve, m