CN2437721Y

CN2437721Y - Rail joint

Info

Publication number: CN2437721Y
Application number: CN 00208135
Authority: CN
Inventors: 李建坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-25
Filing date: 2000-04-25
Publication date: 2001-07-04
Anticipated expiration: 2010-04-25

Abstract

The utility model relates to a rail joint. The utility model is characterized in that the left sides and the right sides of the central planes of end parts of two rails of a joint position are respectively processed to cut one part along the length direction of rail planes, the left sides and the right sides of the two rails are overlapped in a half at the central part of a joint to be spliced into a section of a complete rail, and two sides of the rail are provided with expansion seams. Therefore, the utility model ensures that at least a half rail plane of the rail is kept continuous at the joint position, which makes a wheel smoothly put over the joint. In addition, at the central part of a rail head along the length direction of the rails, a trapezoid key is processed to be arranged on one rail and a trapezoid groove which has a tolerance fit requirement with the trapezoid key is processed to be arranged on the other rail on the processing plane of the end parts of the two rails along the length direction of the rail planes, which effectively enhances the positioning precision and the connection stiffness of the connection of the rail joint.

Description

A kind of rail joint

The utility model relates to a kind of rail joint, is mainly used in railway transport field, is particularly useful for travelling of bullet train.

Vertical cross section is all adopted in its end of employed rail on the railway at present, thereby the shrinkage joint that the rail joint place reserves has caused the discontinuous of rail rail level, the rigidity and the positioning accuracy of rail joint are lower, when the train wheel of running at high speed crosses rail joint, wheel sinkage, the edges and corners that form with rail cross section and rail upper surface bump, produce judder, not only reduced train, the application life of rail, and caused rocking of compartment, reduced the comfortableness that the passenger train passenger takes, increased the loss of goods train goods, the noise of its generation has caused the noise pollution to passenger and railway resident along the line; Chinese patent (the patent No.: 97210665,0) utility model patent that a kind of name is called " rail joint " is disclosed, its accompanying drawing 2 (referring to Figure of description 3) is designed to " it " font with the rail joint place or is similar to the structure of " it " font, its principal character is that the end with two one steel rails of joint respectively machines away a part along its length, the rail level complementation, because its machined surface is not on rail upper surface central plane along its length, thereby, cause the inhomogeneities of joint two one steel rails carrying, the side rail easy deformation under the impact of wheel that does not have the web of the rail to support, promptly form the head that collapses, and, the rail joint of this kind structure, the positioning accuracy of its connection and coupling stiffness are also not high enough, have shortened the application life of rail.

The utility model promptly is in order to address the above problem preferably, and a kind of rail joint that proposes.Its principal character is that the end with two one steel rails of joint respectively machines away a part along about rail level length direction central plane, respectively half is overlapping about joint core two one steel rails, form one section complete rail, the shrinkage joint is stayed on both sides, therefore, guaranteed that rail has at least half rail level to keep continuously wheel being crossed reposefully from joint in the joint; And, in two one steel rail ends along on the rail level length direction machined surface, in the rail head centre along the rail length direction, wherein an one steel rail is processed a trapezoidal key, dovetail groove that has tolerance fit to require with trapezoidal key of another one steel rail processing, improved positioning accuracy and coupling stiffness that rail joint connects effectively, the fastener of rail joint still can adopt existing fastener.

The drawing of accompanying drawing is described as follows:

Accompanying drawing 1 is the overall structure schematic diagram of rail joint, and the sequence number that marks among the figure is followed successively by: (1)--rail joint fastener, (2)--rail 1, (3)--dovetail groove, (4)--rail 2, (5)--trapezoidal key.

Accompanying drawing 2 is the vertical view of rail joint, has omitted the rail joint fastener, and the sequence number of mark is identical with accompanying drawing 1.

Accompanying drawing 3 is a reference background file accompanying drawing.

Below with reference to embodiment and Figure of description, the utility model is made detailed description.

With reference to accompanying drawing 1 and accompanying drawing 2, the end of rail 2 and rail 1 respectively machines away a part along about rail level length direction central plane, respectively half is overlapped about joint core rail 1 and rail 2, piece together one section complete rail, the shrinkage joint is stayed on both sides, therefore, guaranteed that rail has at least half rail level to keep continuously wheel being crossed reposefully from joint in the joint; In rail 1 and rail 2 ends along on the rail level length direction machined surface, in the rail head centre along the rail length direction, wherein rail 1 is processed a dovetail groove (4), trapezoidal key (5) that has tolerance fit to require with trapezoidal key of rail 2 processing, improved positioning accuracy and coupling stiffness that rail joint connects effectively, the fastener of rail joint still can adopt the fastener of existing form.

The utility model compared with prior art has following effect:

1, train operation is more steady, has improved the use of train, rail effectively

Life-span.

2, obviously improve the comfortableness that the passenger train passenger takes, reduced shipping

The loss of train goods.

Noise when 3, having reduced train operation has alleviated passenger and railway along the line

Resident's noise pollution.

4, to the further raising of train running speed, provide very favorable bar

Part.

Claims

1, a kind of rail joint, its principal character is that the end with two one steel rails of joint respectively machines away a part along about rail level length direction central plane, respectively half is overlapping about joint core two one steel rails, pieces together one section complete rail, and the shrinkage joint is stayed on both sides.

2, a kind of rail joint according to claim 1, it is characterized in that in two one steel rail ends along on the rail level length direction machined surface, in the rail head centre along the rail length direction, wherein an one steel rail is processed a trapezoidal key, dovetail groove that has tolerance fit to require with trapezoidal key of another one steel rail processing.