Railway locomotive wheel by a shaft and two wheels integrated riveting, motionless wheel bearing all the net weight, but also attached much during the course of driving from the body, two tracks coming from a variety of interaction force, vertical jack design, during the course of electric locomotive driving not allowed produce deviation, the wheel and the shaft is not allowed to have rust erosion condition, It is not allowed to have other shortcomings and unreasonable repair and processing technology, common faults of high temperature hot shaft and so on.

Once the common fault of the roller bearing hot shaft of the railway truck can not be solved in the middle of operation, the staff needs to adopt the way of removing and replacing the wheelset. When the warehouse jack design is removing and replacing the wheelset, it is necessary to use the horizontal thousand jins top, safety iron support frame, wheel stop, hammer, adjustable wrench, anti-skid rubber pad wood and other special tools.

1. In the work process, the first step is to close the disconnect plug, remove the working pressure of the air master cylinder, and install the wheel stop device around the wheels of the relative bogie that must be removed and replaced;

2, mechanical jack manufacturers apply ground anti-skid wooden pillow, hydraulic thousand jin top, respectively placed under the poor wheel, and placed safety iron support frame;

3, the use of hydraulic top will be under the car up to a certain high degree, release bogie to a longer distance, and the hydraulic top is stationary;

4, the good wheelset is placed at the bottom of both sides of the frame, so that the load-bearing saddle and wheelset, wheelset and bogie repair inverse;

5. Exit the safety iron support frame placed under the car and land on the horizontal qianjin roof.

Application of horizontal jacks in dismantling and replacing roller bearing wheelsets of railway freight cars