Heavy Steel Rail Link part

What parts of the rail link need to use a variety of connectors to ensure its ruggedness and flexibility, then usually when the rail rail rail rail connection which?

Joint connection parts. Including plywood, bolts and spring washers. Plywood. Commonly known as fish plate, made of steel with the same steel. Mostly double-headed, both sides of the upper and lower sides are inclined, and the bottom of the steel head and the bottom of the bottom phase wedge. bolt. A fastener that clamps the rails by means of a nut. In order to stop the nut tightening due to the vibration of the train and loose, need to add spring washers. Bolts are generally made of high-carbon steel, the diameter should not be too large, so as not to weaken the strength of the rail and plywood.

Intermediate connection parts. Also known as fasteners, depending on the type of sleeper used in conjunction with a variety of different combinations. Wooden pillow fasteners, including common spike and iron pad. The advantage of this fastener is less parts, easy to install, but the buckle force is small. In order to improve the performance of wooden pillow fasteners, many countries use screwdrivers or spring studs instead of ordinary spikes, or switch to concrete sleeper has been effective in a variety of different types of fasteners.

Concrete sleeper fasteners, including anchor bolts, iron plate, buckle and elastic cushion. Anchor bolts. For fastening the use of fastening parts, there are a variety of different anchoring methods.

Rail welding is a very important thing, its quality should be guaranteed, so the rail welding must have a certain technical requirements. Let's take a look at the technical requirements for long rail welding.

1. To be welded rails should be consistent with the new line of railway rails related technical conditions.

2. Base rail welding should be used in contact welding.

3. Welding equipment operators must undergo professional training, familiar with the quality of rail welding head, the relevant departments of qualified, and access to operational certification.

4. The operator must strictly enforce the operating procedures of the welding equipment and check the operation parameters determined by the form.

5. Long rail welding the basic process: the election of the first track of a rail straight to the end of a welding a welding a normalizing a weld rough grinding a weld cooling a four-way straightening a seam fine grinding a flaw detection, acceptance A storage.

6. Long rail welding should be prepared according to the design requirements of the track plan.

7. Rail should be used when the cross-section asymmetry, the basic tolerance of the same relative welding rail. The asymmetrical deviation of the first section of the long rail shall not be greater than 0.6 mm.

8. According to the requirements of rail and straightening the situation such as rail sawing. After hardening of the rails, straightness of 1m ruler should not be greater than 0.2mm.

9. Remove the dirt within the range of 0.5m, to be welded rail end and rail and electrode contact parts should be grinding rust, so that metallic luster exposed to more than 80%.

10. When the ambient temperature is below 10 ?, the heating temperature of the two rail ends of the welding rail should meet the requirements of the new railway rail welding.