What are the key points for daily inspection of mining area driving and steel plate horse riding cards

The road conditions in the mining area are poor and there are many heavy loads and impacts. The steel plate saddle card (U-bolt) is a key component of the steel plate suspension. Once loose or broken, it can easily cause the rear axle to shift and the steel plate spring to fall apart, leading to major safety accidents. It is also a maintenance point that overseas mining fleets tend to overlook. Daily inspections should not only take a rough look, but also focus on several key areas. Firstly, check the nut and anti loosening component, with a focus on whether the nut has shifted or slipped, and whether the anti loosening gasket and locking buckle have been flattened, broken, or fallen off. The mining area continues to vibrate, and after the anti loosening parts fail, the bolts quickly loosen. Many of them appear to be in a virtual position when tightened, but if conditions permit, they can be tightened regularly according to the standard torque. Next, check the body of the horse riding card, focusing on the bending corners, threads, and transition positions of the shaft. These two areas are stress concentration zones and are most prone to fatigue cracks. Soil rust and grime can easily cover fine lines, and it is necessary to simply clean the sediment before observing. If any small cracks are found, they must be replaced directly and cannot continue running with the disease. Then check the fitting surface of the pad and steel plate to see if the pad is twisted, worn, or displaced. Misalignment of the pad can cause one-sided stress on the saddle card, greatly reducing its service life. At the same time, pay attention to the center pin of the steel plate. The typical signals of loosening of the saddle card are center pin movement and steel plate displacement. It also depends on the fit between the horse riding card, bridge deck, and steel plate. There should be no curling or suspension, and the gap will quickly expand under heavy load impact. In addition, pay more attention to the driving signals. When the vehicle passes through a pit, if the chassis makes a dull clanging sound or the tires are abnormally worn, priority should be given to checking for horse riding cards. It is recommended to include horse riding cards in the pre departure inspection items for mining vehicles, regularly tighten them, and use corresponding strength grade accessories when replacing them. Non standard bolts should not be mixed. Spare parts should be prepared in advance for remote overseas construction sites to reduce sudden failures on the road and ensure stable fleet operation.