Rail welding and thermal processing complex

IPC classes for russian patent Rail welding and thermal processing complex (RU 2521071):

E01B11/46 - General methods for making gapless tracks

Another patents in same IPC classes:

Method of laying continuous welded rail track sleeper-and-rail section / 2500850

Sleeper-and-rail section is placed on spaced apart rollers to calculate the length of end section whereat temperature conditions fall beyond recommended temperature of anchoring. Anchoring of the rail with under-rail base is lessened at said section. Rail temperature is changed thereat to allow rail elongation by design value. Forward end of sleeper-and-rail section is welded to laid sleeper-and-rail section end. Pre-lessened anchoring links with under-rail base are reestablished at pre-laid sleeper-and-rail section ends. Temperature of laid sleeper-and-rail sections is varied to allow their elongation and displacement of check cross-section to design position. Rollers are withdrawn in the limits of a elongated sections. Said sections are secured at under-rail base. Lengthwise load is applied to opposite end of laid section. Rail temperature is successively measured at separate section towards to section end along with application of lengthwise load by hydraulic force and heater to displace the check cross-sections to design positions. Rollers are withdrawn at separate sections to anchor them at under-rail bases. End of just-laid rail-and sleeper section is jointed to rail of the section laid before.

Method of laying continuous welded rail track sleeper-and-rail section / 2500850

Rail welding and thermal processing complex / 2521071

Rail welding and thermal processing complex comprises the following units sequentially located: a welding machine, a flash trimmer, a grinding assembly of weld joint contour and a hardening plant, and preferably a conveyor-pusher, an assembly of preliminary cleaning of a rail end and centring of a rail profile, as well as a defect detector. The assembly of preliminary cleaning of the rail end and centring of the rail profile is located in front of the welding machine. The defect detector in its turn is located after the hardening plant. All assemblies and units of the complex are located in a common casing. A method of fabrication of rail strings includes the consistent butt welding of unhardened links of rail mill products, burr grinding, grinding of weld joint head and consistent quenching of the rail along the entire length by passing the welded rail string through the hardening plant.

FIELD: construction.

SUBSTANCE: rail welding and thermal processing complex comprises the following units sequentially located: a welding machine, a flash trimmer, a grinding assembly of weld joint contour and a hardening plant, and preferably a conveyor-pusher, an assembly of preliminary cleaning of a rail end and centring of a rail profile, as well as a defect detector. The assembly of preliminary cleaning of the rail end and centring of the rail profile is located in front of the welding machine. The defect detector in its turn is located after the hardening plant. All assemblies and units of the complex are located in a common casing. A method of fabrication of rail strings includes the consistent butt welding of unhardened links of rail mill products, burr grinding, grinding of weld joint head and consistent quenching of the rail along the entire length by passing the welded rail string through the hardening plant.

EFFECT: by means of the present invention rail strings with a uniform structure and properties throughout the railway can be manufactured from previously hardened mill products.

5 cl, 3 dwg

The invention relates to railway transport and can be used for the manufacture of welded rail lashes length up to 800-1000 meters of the shorter parts of the rail car.

At present, the long rail scourge made consistent welding parts rail car Dina 12.5 or 25 m, through heat treatment (quenching). Welding in the field weld structure and physico-chemical properties of a metal different from the structure and properties of metal on the main length of the rails, which in use leads to uneven wear of rails and reduce their lifespan. To address this shortcoming after the weld zone of welded joints subjected to additional heat treatment. That is in addition to the welding equipment for the manufacture of rail lashes necessary equipment for heat treatment. Both types of equipment are used, as a rule, independently from one another and are located at a considerable distance between them. Moreover, each type of equipment includes separate means for moving along the rail of the scourge.

A known system for rail welding and heat treatment of welded joints (patent CN 1648263, 2005), which allows you to align the structure and properties of the metal after welding hardened rail links. To nedostatochnaya is that the alignment of the metal structure is not absolute, and in the process it requires periodic movement of the heat treatment equipment from one weld to another.

Also known track rail welding and heat treatment complex (patent RU 2272859, 2003), train-the-go or a terminal. The complex can be used for repair of the tracks directly on the train tracks, but all the drawbacks previously specified device is retained and the complex.

The present invention allows the manufacture of welded rail scourge with uniform structure and properties throughout. The complex unified management and more compact in comparison with the known devices.

Rail welding and heat treatment complex for the manufacture of rail lashes contains consistently located the welding unit, the unit, the node grinding contour of welded joints and hardening the installation.

The complex can also include a conveyor-pusher, pre-Stripping of the ends of the rails and aligning the profile rails in front of the welding unit, andflaw detector located after hardening installations. Mostly all units And units of the complex will implement in the General case. In the quenching set is VKE use of induction heating of rail and subsequent air cooling through the nozzle.

Design features of rail welding and heat treatment of the complex are explained using the drawings.

Figure 1 schematically presents a sequential arrangement of components and assemblies rail welding and heat treatment of the complex together with a rail, which is cleaned in the proposed complex (moving rail from left to right).

Figure 2-simplified packaging, rail welding and heat treatment of the complex in the top view in cross section of a horizontal plane (movement of the rail right-to-left). In this drawing, the detector is not shown.

Fig 3 is a simplified view of a quenching unit in cross section a vertical plane (cross section a-a).

Position 1 of the drawings marked machined rail. Rail welding and heat treatment of the complex contains a conveyor-plunger 2, node 3 pre-Stripping of the ends of the rails and aligning the profile rails, the welding unit 4, unit 5, site 6 sanding contour of welded joints, hardening installation 7 and the detector 8.

Preferably all nodes of the complex is placed in a common housing 9.

Individual parts and elements of the rail welding and heat treatment of the complex indicated on the drawings the following positions: 10 - wheels; 11 - centering rolls node 3 pre-Stripping of the ends of the rails and alignment about the île rails; 12 - electrical contacts of the welding unit 4; 13-grinding wheels unit 5; 14 - inducers heating rails and 15 - nozzle cooling hardening installations 7. The fastening of the housing 9 to the workshop floor or production area is anchor bolts 16.

A method of manufacturing a rail lashes includes sequentially welding butt soft parts rail car, eat deburring, polishing heads welded joints and consequent hardening of the rail along the entire length by passing welded rail scourge through hardening installation.

Work rail welding and heat treatment of the complex is organized as consistent along the length of the welded rail scourge and the simultaneous execution of all the required operations of a method of manufacturing rail lashes.

Link soft rail car one face is introduced into the conveyor-plunger, which moves it and following segments sequentially through all nodes and aggregates rail welding and heat treatment of the complex. After Stripping the end and the first welding operation elongated rail whip is moved inside the rail welding and heat treatment of the complex so that the first link consistently to the entire length is subjected to quenching in the quenching installing 7. While passing through gratissima the spruce 5 is the treatment of the welded joint between the first two links of railway scourge. On the conveyor, the pusher 2 serves the following (third) link rail car and make him all the same operations as with the previous links. Capacity rail scourge lead to the required length of 800 m and more). When this scourge along the entire length like a uniform processing and acquires a uniform physical and mechanical properties and geometric characteristics.

Using rail welding and heat treatment of the complex according to the invention it is possible to make rail scourge and from pre-hardened parts of the rail car. In this case, the heat treatment is sufficient to expose only a relatively small sections of rail on both sides of each welded joint. While hardening the unit will operate periodically, it is easy to adjust using the control.

1. Rail welding and heat treatment complex for the manufacture of rail lashes containing consistently located the welding unit, the unit, the node grinding contour of welded joints and hardening the installation.

2. The complex according to claim 1, characterized in that it further comprises a conveyor-pusher, pre-Stripping of the end rails and aligning the profile rails in front of the welding unit, and a detector located after sakalauskaite.

3. The complex according to claim 1 or 2, characterized in that all of its units and the units placed in the General case.

4. The complex according to claim 1, characterized in that the tempering units includes inductors heating rail and nozzle cooling.

5. A method of manufacturing a rail lashes, comprising sequentially welding butt soft parts rail car, eat deburring, polishing heads welded joints and consequent hardening of the rail along the entire length by passing welded rail scourge through hardening installation.