CN86106410A

CN86106410A - Rail overlapping device

Info

Publication number: CN86106410A
Application number: CN 86106410
Authority: CN
Inventors: 马华政
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-11-04
Filing date: 1986-11-04
Publication date: 1987-06-24

Abstract

Two ends of the present invention are respectively oblique convex end face and oblique spill end face.Its upper and lower wing plate end face is angled with the path oblique and vertical with rail level plane, and the upper and lower plane of web projection and recessed portion all parallels with rail level, and the length of web projection is greater than the design stroke between rail.The oblique spill end face of this rail overlapping device one end is shaped as the translation formation of the oblique convex of the other end along the path direction.With the steel rail laying railway that this expansion and cotraction regulator joint is arranged, can make adjacent rail interface area that continuous bearing surface is arranged.The rail joint end district in vertical direction for being rigidly connected, thereby eliminate of the impact of running train wheel to the rail joint end place.

Description

Rail overlapping device

The present invention relates to a kind of Rail for railway expansion and cotraction regulator (expansion joint).These rail stroke joint two ends have oblique convex and oblique spill end face respectively.With the steel rail laying railway that expansion joint of the present invention is arranged, can eliminate the impact at running train wheel and rail joint end place, significantly reduce train running resistance and vibration, reduce noise pollution, save maintain road equipment and manpower, improve train running speed and increase passenger's comfort.

Many generally acknowledge that no matter be only one, 20 meter short rail or long rail or the gapless track more than hundred meters of length, its rail joint is the weak link of track all the time.Various countries' railway track generally adopts the expansion joint of flush joint fishtail clamping plate so far, the greatest problem of this type of joint be between the rail the interface vertical direction connect rigidity be zero and the rail bearing surface discontinuous at interface, the former makes the forward and backward end of rail of interface produce local upwarping and curved elastic deformation down respectively under the immense pressure of wheel, the latter then makes the instantaneous unstability drop of train wheel generating period, and the inevitable outcome that both cause is the frequent intense impact of running train wheel to rail joint.This periodic strong wheel-rail impact has not only significantly increased train running resistance, reduce train running speed, also accelerating vehicle member and rail failure, impel track deformation and ballast bed subgrade is produced adverse effect (phenomenon of for example rising soil in the joint), the safety of interface train operation and passenger's comfort reduce.

Adopt long rail and gapless track the rail joint number can be reduced to minimum limit, but gapless track is not suitable for hills and mountain area,, will solves the technical barriers such as carrying, laying and welding of long rail yet, expend a large amount of manpower and materials even in the plains region.For prevent to expand rail and keep gauge not Yin Wendu change, also need to be provided with the rail stroke joint of a great deal of.

In the known multiple pattern rail stroke joint, (CA1177040) of vertical angle seam and (US4485967) expansion joint that rail head has slip feather and groove respectively make rail joint end have continuous bearing surface, still are zero but connect rigidity in the interface vertical direction between rail.The latter (US4485967) is member though the fishtail clamping plate of available common clamping plate replacement higher cost fixes, and the rail joint shape is too complicated, is difficult for a large amount of production.By bearing C type expansion joint (SU1082890) and the modified version thereof that rail and tongue overlap joint constitutes, need carry out a large amount of accurate faying surface cuttings to two rail phase overlaps, and because two rail overlap vertical direction connect rigidity is zero, overlap need be fixed on the special board-like sleeper, so its cost is higher, only on high-speed line, use.The expansion joint (SU1121342) that diagonal bits is equipped with the rigidity guide rod makes the rail joint end district have continuous bearing surface and have perpendicular rigid and be connected, can significantly weaken or eliminate the impact of wheel track at interface, but because the cutting of interface area overlap rail head too much, be easy to damage during carrying, and this kind expansion joint has the ring-type projection that embeds the rigidity guide rod, the global shape complexity is difficult to adopt conventional milling method to be produced in a large number.

Task of the present invention is to propose a kind of lower-cost rail stroke joint that makes the rail joint end district continuous bearing face be arranged and have perpendicular rigid to connect along the rail level direction, so that eliminate the intrinsic aforementioned all disadvantages of traditional expansion joint.

The scheme that solves is, adopt two ends to be respectively the novel steel rail laying railway of oblique convex and oblique spill end face expansion joint, on the oblique convex end face of this rail one end, lower wing plate (being the rail head and the flange of rail) is short slightly, web (web of the rail) is long slightly, the end face of wing plate is the plane angled and vertical with the rail rail level with rail path oblique, the end face of web projection is the plane that intersects certain angle with path, on the web projection, lower plane all parallels with the rail rail level, and the length of web projection is the design stroke between rail when laying rail.The other end of this kind rail is oblique spill end face, and this oblique spill end face is shaped as the translation of the oblique convex end face of this rail one end along the path direction.The cross section of rail is identical with known rail.When usefulness has the steel rail laying railway of expansion joint of the present invention, match for tiltedly recessed-oblique convex end face in the junction of every pair of adjacent rail, leave the design stroke gap of regulation between two rails along the path direction, the upper and lower plane of the parallel steel rails rail level of the concave, convex part between the end of rail expansion joint is being slidingly matched for no obvious gap then.Also can make the upper and lower interplanar of concave, convex part that matches between the adjacent rail stroke joint leave certain thickness gap with machine-tooled method, insulation spacer or the metallic gasket with uniform thickness embeds again, makes it to become being slidingly matched of no obvious gap.When the gap of parallel rail level direction partly appears in this concave, convex behind the rail long service, can easily make this gap eliminate it by the backing plate Huo Geng Change backing plate of repairing and embed uniform thickness.Be connected and fixed with fishtail clamping plate and bolt along the path direction between the rail stroke joint.Because the rail joint place vertically for being rigidly connected, also can adopt lower-cost ordinary flat clamping plate and bolt to be connected and fixed it.

As seen, rail stroke joint of the present invention can make rail expand with heat and contract with cold and keep gauge constant along the path direction at interface, the rail joint end place then is being rigidly connected of no obvious gap between concave, convex two parts along rail rail level vertical direction, and relative motion can not be vertically done at the two ends of adjacent rail.Obviously, when train wheel crossed this rail stroke connector area, because above-mentioned rigid constraint, the end of rail interface area can not upwarp and descend curved elastic deformation simultaneously respectively.On the other hand, because rail wing plate end face is and path oblique and the plane vertical with rail level, thereby the rail rail level constitutes continuous bearing surface, and wheel all is subjected to the support of level and smooth continuous bearing face in arbitrary moment of rolling process, can not occur in the phenomenon of the instantaneous unstability drop of interface area.Therefore, employing has the steel rail laying rail of expansion joint of the present invention, the wheel and the phenomenon of rail joint end bump and the aforementioned all disadvantages that cause thus that exist on the straight joint track can be eliminated at all, and all a series of obvious benefits of the present invention must be brought thereupon.

The short steel rail laying railway that has oblique convex and oblique spill expansion joint with two ends respectively, the ride comfort of the gapless track of manpower and materials is close the ride comfort of its circuit bearing surface with need and expending greatly than high-tech, thereby might adopt short rail replace in long weldering rail and even gapless track, so that save the cost of circuit greatly and shorten construction period, this point especially has using value to hills and location, mountain area.

Expansion joint of the present invention and rail constitute whole, also the two that the oblique convex surface and the oblique recessed end face of expansion joint can be welded in general flush joint rail respectively separately.

Rail stroke joint of the present invention need not carry out a large amount of straight-cut to the rail head of rail, so not subject to damage in service.This expansion joint cross sectional shape is identical with rail, and expansion joint of the present invention can directly be processed into the two ends of rail without any special-shaped projection in the side, so the present invention still has long service life, cost is low, is easy to mass-produced advantage.

Description of drawings and embodiment

Fig. 1 is the elevation of rail stroke joint of the present invention, and Fig. 2 is for adopting the elevation of end of rail of the present invention junction, and Fig. 3 is the vertical view of rail junction.Accompanying drawing has clearly shown feature of the present invention.Rail stroke joint of the present invention is made up of rail (1), oblique convex end face (2) and oblique spill end face (3).Some connecting holes (4) are arranged respectively on rail stroke joint two end webs, and rail stroke joint one end is oblique convex end face (2) and spill end face (3) that the other end forms along the path translation for this oblique convex end face.On the convex end face, lower wing plate (5) is short slightly, web (6) is long slightly, the end face of wing plate (5) and web (6) are plane with the angled ∠ A of path oblique along the end face of path projection (7), this angle ∠ A is preferably in 20 °～75 ° scopes, on web (6) projection (7), lower plane parallels with rail tread, this projection (7) is along the length of the path direction design stroke greater than rail, for example, for short rail, this projection length is 15～35mm, for long rail more than hundred meters, the corresponding increase of projection length under any circumstance remains engagement with projection and the recessed portion that guarantees the expansion joint of adjacent end of rail on the rail.Be connected and fixed with fishtail clamping plate (8) or ordinary flat clamping plate and bolt (9) between the expansion joint of adjacent rail.For showing feature of the present invention, in Fig. 2, do not draw intentionally clamping plate (8) and bolt (9), line facilities such as sleeper do not draw among Fig. 2 and 3 yet.

Have the basic identical of the manufacture method of rail of expansion joint of the present invention and production equipment and traditional rail.The section bar that is come out by girder and rail mill is after cooling on the cold bed, whole enters straightener, carry out cold shears then, shear direction preferably becomes the oblique angle of requirement with the path of rail, the shape of composite blade is respectively convex cutting edge and spill cutting edge, and sword molded dimension and shape are consistent with the spill and the convex end face of rail joint respectively.Behind the cold shears, also the butt joint end face is rebuild processing again.Also can adopt traditional technological process to produce the flush joint joint steel rail, again through being machined to rail stroke joint of the present invention.Flush joint rail for active service on the railway line, also can make peculiar oblique convex of rail of the present invention and oblique spill end face with special equipment through machine at an easy rate, perhaps, with the single-ended tiltedly protruding and single-ended oblique female fitting field Welding of producing specially in the end of some rail of active service, other flush joint rail is then mutually to being welded into middle long rail, so that finish the transformation process to existing path.

Rail overlapping device of the present invention is not only applicable to the connection of railway track, is applicable to that all rail are connected connection with I-steel Beam yet.

Claims

1, a kind of rail overlapping device, it is characterized in that this expansion and cotraction regulator is that the oblique convex end face (2) and the other end are constituted by oblique spill end face (3) by rail (1), an end, and this oblique spill end face the translation along the rail path is constituted by this oblique convex end face.

2, according to the described rail overlapping device of claim 1., it is characterized in that the upper and lower wing plate (5) of oblique convex end face (2) is short slightly, web (6) is long slightly, and the wing plate end face is and rail path oblique and the plane vertical with rail level.

3, according to claim 1. and 2. described rail overlapping devices, it is characterized in that the upper and lower plane and the rail rail level of the projection (7) of web (6) parallels, the length of the projection (7) of web (6) is greater than the design stroke between rail.

4,, it is characterized in that the space between the upper and lower plane of the upper and lower plane of web projection and adjacent adjuster web recessed portion can be lined with backing plate according to the described rail overlapping device of claim 1..