Ultra-high pressure automatic oiling device

Abstract

The invention provides a super high pressure automatic oiling device, which relates to the improvement in manufacture and maintenance technologies on a rail-mounted vehicle. The device is characterized in that: a hydraulic oil way together with a gear pump and a solenoid relief valve forms a first hydraulic system; an oil way outlet of the first hydraulic system is connected with a booster through a solenoid reversal valve to form a second hydraulic system; a direction increaser outlet is communicated with an oil outlet. The device has the advantages that: firstly, the adoption of an oiling press mounting wheel shaft overcomes shortcomings and defects of press mounting of the prior wheel shaft; secondly, the technology solves one of major process production technologies for Chinese production of high speed vehicles; thirdly, rejection rate is reduced, so production cost can be saved; work efficiency is increased and also products quality and stability can be improved; finally, the technology can be applied not only to railway locomotives but also to products production of other industries, and has extensive applications, market prospects and popularization values.

Description

technical field [0001] The invention belongs to the technical field of rail vehicles, and relates to an improvement in manufacturing and maintenance technologies of rail vehicles. Background technique [0002] With several major speed increases in my country's railway transportation, the performance and quality requirements of locomotives and passenger cars have been continuously improved. As one of the most critical parts of locomotives and passenger car bodies, the performance of wheels and axles directly affects the speed of locomotives and passenger cars. . [0003] The movement of the locomotive and passenger car body is completed by the rotation of the wheels, and the assembly of the wheels and shafts has become the most important technical focus. At present, vehicle manufacturers all over the world use the assembly method of interference press-fitting, as shown in Figure 1, the shaft The outer diameter R is larger than the diameter r of the wheel hole, that is, R>r...

AI Technical Summary

Problems solved by technology

[0006] 1. Due to the interference during the press-fitting process, the surface of the wheel and the shaft will be worn to a certain extent, thereby reducing the performance index of the wheel shaft

[0007] 2. Due to the damage during the press-fitting process, there is a certain limit to the rotation speed of the wheel, which cannot meet the needs of high-speed trains

[0008] 3. There are strict requirements on the interference size and material of the wheels and axles, otherwise the axle or wheel will be damaged during the press-fitting process, resulting in the scrapping of the axle

[0009] 4. It is not conducive to the maintenance of the wheels in the future, because after a period of operation of the car body, the wheels are worn out, and the wheels need to be repaired, and then press-fitted, so that the performance indicators of the wheel axles are further reduced

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