There are certain standards for the progress of any work. Therefore, the use process of mine car also needs to have certain standards. The following are the basic maintenance standards for coal mining car. I hope you can understand it briefly.
Narrow gauge mine car wheel set: The wheel must not have cracks, the tread surface is smooth, and the rotation is flexible. The geometric dimensions of the wheel tread should meet the requirements of GB4695-84, the tread wear should not exceed 45% of the original thickness, and the wheel flange wear should not exceed 35% of the original thickness. The difference between the tread diameters of the two wheels of the same wheel set shall not exceed 2 mm.
Mine car bearings: Single-row radial ball bearings are worn, and their radial clearance shall not exceed 0.5mm. Old bearings are generally not allowed to be used for overhauling coal mining car. New and old bearings in the same wheel pair shall not be mixed.
Coordination of mine car bearing and bearing: The inner diameter of axle and bearing adopts m6 tolerance. When the bearing is G-class precision, its matching surplus is related to the regulations. The outer diameter of the wheel and the bearing adopts N6 tolerance. When the bearing is G-class, its matching surplus shall meet the requirements of Table 3-5-2. The surface roughness of the inner hole of the wheel shall not be greater than.
You can first simply understand and master the basic maintenance standards of the above three mine carts, which can help customers and friends to purchase and use mine car more smoothly, and provide support and help to ensure the production safety and efficiency of the enterprise.
