DE19813227C1 - Connecting clamp for railway rail - Google Patents

Abstract

The clamp plate (6) is bolted to the rail (1) and has a C-shaped profile with a central web (11) and two curved shanks (12,13). The upper shanks (12) of the rail are shortened with respect to the lower (13) so that the return device claw can engage the rail top flange in the area of the clamp plate. The clamp plate have no projections in the area of the rail web (3).

Description

The invention relates to a connecting strap for bridging the joint Vignol rails according to the preamble of claim 1.

Vignole rails are usually used on tracks for rail vehicles set. This does not usually result in welded rail joints Connecting straps bridged. Such rail joints bridging Connecting straps are described in US Pat. No. 1,975,816 or US Pat DE 38 01 241 A1 shown. In the formation of connecting straps for the Use on tracks for rail vehicles must be given special consideration be that the rail ends at the bumps when driving over the Vehicles do not tip down, resulting in knocks on the rail top area associated with the destruction of the rail. Therefore the connecting straps for rails when used on rails for rails vehicles designed such that they preferably the rail on the head and support on the foot and are clamped here.

Vignole rails of railway construction are also used as back rails particularly long conveyor belts. Such particularly long Conveyor belts are used especially in opencast lignite mining built coal from the mining site to the shredding site or loading site  transport. These particularly long conveyor belts must be made accordingly the location of the mining site on the mining wall. The Moving is done by back devices or back vehicles that correspond with the devices on the rear rail arranged on the conveyor belt frame attack and lift the conveyor belt over the back rail and sideways offset. It is not important for this purpose for Vignol rails significant whether the rail kinks at the joint. Because of the elastic It is training the conveyor belt scaffolding and use in the mining operation on the contrary, it is desirable that the rail joint at its connection be one has some elasticity.

So far, the ends of the were used as back rails on conveyor belts ten Vignolschienen via connection known from the railway system tabs connected together. They worked disadvantageously Connecting tabs, in particular also caused by the Conveyor belt generated vibrations with their edges very close quickly into the rail head and the rail foot, which then becomes one leads to premature breakage of the rails in this area. Beyond that these connecting straps are very labor-intensive and material-intensive, since they either with approximately constant wall thickness of the cross-section on the Rail web side facing locally with projections that correspond to de engage recesses of the rail web or alternatively with ver thick legs are formed.

The invention has for its object to find a connecting tab when using Vignol rails as the back rail on conveyor belts not worked into the rail foot and the rail head and the special requirements for the application described above is adjusted.  

This object is achieved by the features of the patent claim 1 solved. Advantageous training and further education are in the Claims 2 to 4 described.

The advantages achieved by the invention are in particular that the Connecting strap for bridging the joint from adjacent Vignol rail ends used as back rails on conveyor belts become, no longer in the rail head and in the rail foot incorporate and that no rail breaks due to the used Connection tabs are caused. The is also advantageous Connection tab according to the invention is easy to manufacture and leaves moreover, the head of the rail relatively free, so that the claws of the Rear device also in the area of the connecting strap on the rail head can attack.

An embodiment of the invention is shown in the drawing and is described in more detail below. Show it

Fig. 1 shows the view of the connection of two abutting ends of Vignol rails

Fig. 2 shows a section through the connection of FIG. 1 at the ends of the Vignol rails.

The rail 1 shown in FIGS. 1 and 2 is a Vignol rail, for example of the UIC 60 type, with a weight of 60 kg per meter. Such rails have a web 2 , which only slightly thickens from the center to the head 3 and foot 4 of the rail 1 and more thickly in the transition area. The foot 4 of the rail 1 has a cross-section with an outer small height and is to the center, to the transition to the web 2 higher.

The ends 5 of the adjoining rails 1 are connected to one another via connecting straps 6 arranged on both sides. Approximately in the middle, the web 2 of the rail 1 penetrating a plurality of holes 7 are spaced from one another. At the same place 6 holes are arranged in the connecting tabs. The shaft of a screw 8 engages through the bores 7 of connecting straps 6 and web 2 of the rail 1 . The clamping voltage between connecting lugs 6 and rails 1 is then carried out by screwing the screw 8 with a nut 9th A washer 10 is arranged between nut 9 and the associated connecting bracket 6 .

The connecting plate 6 is formed as a profile with a c-shaped curved cross section. The wall thickness of the connecting strap 6 is approximately constant over the height. The connecting strap 6 has a central web 11 and two outwardly curved legs 12 , 13 . The rail head side leg 12 of the connecting bracket 6 is only short and is not on the head 3 of the rail 1 . In contrast, the leg 13 on the rail foot side rests on the foot 4 of the rail 1 . The connection of the ends 5 of the rail 1 via connecting brackets 6 is not, as is the case with rails in the railway, form-fitting by clamping the connec tion bracket 6 between the head 3 and foot 4 of the rail 1 , but predominantly non-positively by the frictional engagement of the webs 11 of the connecting brackets 6 on the web 2 of the rail 1 . For this reason, the connecting straps 6 also rest against the web 2 of the rail 1 over a relatively large height.

To prevent kinking of the ends 5 of the rails 1 at the connec tion point, the connecting tab 6 with the leg 13 is also on the foot 4 of the rail 1 . In contrast to the abutment of the webs 11 , 12, this support is only approximately linear.

In order to achieve the training features described above, the connecting tabs 6 are designed for use on Vignol rails, for example of the UIC shape, in such a way that the shank head-side leg 12 of the connecting tab 6 is shortened and is provided on the rail side with a radius that is smaller than the Ver thickening radius of the web 2 of the rail 1 , so that the leg 12 with its leg end 14 is neither on the web 2 nor on the head 3 of the rail 1 . The leg end 15 of the leg 13 on the foot side of the connecting bracket 6 does not rest on the foot 4 of the rail 1 . The leg 13 has a radius of curvature which is greater than the transition radius between the web 2 and the foot 4 of the rail 1 . Therefore, there is no contact between the connecting bracket 6 and the rail 1 in this area. This radius of the leg 13 continues to the leg end 15 , whereas the foot 4 of the rail 1 has an inclination here. Therefore, the leg end 15 does not come into contact with the foot 4 of the rail 1 .

The connection pockets 6 are preferably produced from flat steel. This flat steel is bent before or after cutting to the profile described above. In connection with the cutting to length, the profile is also punched.

Tempered steel is preferably used for the profile. Such a steel, for example of the quality 31Mn4, can be subjected to a heat treatment after the connection lug 6 has been completed . After tempering as a preferred heat treatment, the connecting plate 6 is given the required strength.

Reference list

1

rail

2nd

web

3rd

head

4th

foot

5

The End

6

Connecting pocket

7

drilling

8th

screw

9

mother

10th

disc

11

web

12th

leg

13

leg

14

Thigh end

15

Thigh end

Claims (4)

1. Connecting strap ( 6 ) for bridging the joint of Vignol rail ends lying in front of one another, the connecting straps ( 6 ) resting on one or both sides on the side of the rail ( 1 ) and screw connections penetrating through the holes ( 7 ) in the connecting straps and the rail web with the ends ( 5 ) of the rails ( 1 ) are connected, the connecting strap ( 6 ) is designed as a c-shaped curved profile with a central web ( 11 ), two outwardly curved legs ( 12 , 13 ) and with approximately the same wall thickness, the web ( 11 ) is at least approximately linear in the area of the screw connection, the connecting strap ( 6 ) only rests with its back on the rail web and with its leg ( 13 ) on the rail foot side and the leg ends ( 14 , 15 ) do not rest on the rail ( 1 ), characterized in that when using the rails ( 1 ) as back rails on conveyor belts the rail head-side Sch grandson ( 12 ) of the connecting bracket ( 6 ) is designed so shortened that the claws of the rear device can also engage in the area of the connecting bracket ( 6 ) on the rail head ( 2 ) and that the connecting bracket ( 6 ) in the area of the rail web ( 3 ) facing Side has no protrusions. 2. Connecting strap according to claim 1, characterized in that it is bent from flat material. 3. Connecting strap according to claim 1 or 2, characterized in that it is made of steel. 4. connecting strap according to claim 3, characterized in that it is heat treated after shaping.