Manufacturing method of bearing saddle composition suitable for installation of axle end grounding device on truck bogies

1. The present invention relates to the technical field of railway freight car design, in particular to a bearing saddle composition suitable for installing a shaft end grounding device on a freight car bogie.

Background technique:

2. At present, railway freight cars have technical requirements for grounding; the purpose of grounding is to release the static electricity generated during the operation of the car body, and at the same time, it can also reduce the risk of casualties caused by accidental electrification of railway vehicles. Existing domestic and foreign railway freight cars usually use cast steel "three-piece" bogies. When this type of bogie is grounded, charges are usually conducted through bearings. After the electric charge is transmitted to the bogie bearing saddle, it is first transmitted from the outer ring of the bearing to the inner ring of the bearing through the bearing rollers, and then to the ground through the axles, wheels and rails.

3. The common grounding method of existing trucks, because the current needs to pass through the bearing, the bearing is easy to cause electrical corrosion, and there is also the risk of internal damage to the bearing due to current ignition, which poses a hidden danger to driving safety. At the same time, the electrical safety performance of the existing truck bogie grounding method is not high, and it is difficult to meet the electrical safety requirements of some construction vehicles with railway trucks as platforms. The grounding method of railway passenger cars has high electrical safety performance, and the measures of installing the shaft end grounding device are usually adopted. But the axle end grounding device is only suitable to be installed on the bogie with axle box like railway passenger car. Since the "three-piece" truck bogie does not have an axle box, it uses a bearing saddle to connect the bearing and the side frame. The existing bearing saddle structure cannot install the axle end grounding device.

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