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　　1. During the excavation of the wheel excavator, the "four prohibitions" shall be achieved, that is: ① it is prohibited to rotate according to the instructions of the wheel excavator before the bucket leaves the working face. ② Sharp rotation is prohibited. ③ It is forbidden to level the mound with the side of the bucket. ④ It is forbidden to impact the working face with the bucket.

   2. According to the rotation range of the boom of the wheel excavator, it shall be controlled at 45 ° - 60 °, and the inclination angle shall be controlled at 30 ° - 45 ° according to the weight of the wheel excavator.

   3. According to the wheel excavator, when going uphill, the crawler driving wheel should be behind, when going downhill, the crawler driving wheel should be in front and the boom should be behind. The boom is parallel to the track. The slewing mechanism shall be in the braking state, and the bucket shall not be more than 1m above the ground. The uphill and downhill shall not exceed 20 °, the downhill shall be at a low speed, and variable speed sliding is prohibited.

   4. It is forbidden to arrange wheel excavators in the upper and lower mining sections for simultaneous operation; When the working face rotates at the same time, the flat ground shall be selected and the obstacles in the channel shall be removed. If it moves on the soft ground, square timber shall be padded under the walking device.

  wheel excavator

   5. It is forbidden to work under high-altitude erections such as wires. According to the wheel excavator, it is not allowed to work under the shutdown, and it is not allowed to stay in the space for a long time with a fully loaded bucket.

   6. When the wheel excavator needs to stop on the slope, the bucket must be lowered to the ground, all control levers shall be placed in the middle, stop and brake, and wedge blocks shall be padded at the rear of track or tire.

   1) according to the technical conditions of wheel excavator, it has a great impact on its productivity, especially the power performance of engine. In addition, when the bucket teeth are worn, the bucket cutting resistance will increase by 60% - 90%. According to the fire prevention of wheel excavator, the blunt bucket teeth should be replaced.

   2) in the construction organization, the driving route of the dump truck shall be prepared in advance, and unnecessary ramps shall be removed. For each roadheader of wheeled excavator, there must be an empty return road to avoid mutual interference when the dump truck enters and exits. Each running track shall be kept in good condition to facilitate the operation of the dump truck.

   3) correctly carry out construction organization design. The number and bearing capacity of dump trucks matched with the wheel excavator shall meet the requirements of the production capacity of the wheel excavator, and the capacity of the dump truck shall be an integral multiple of the bucket capacity of the wheel excavator. At the same time, the double release loading method shall be adopted as far as possible to fill one wheel excavator and then load the next one. Since the two dump trucks are parked on the arc line within the reach of the bucket unloading of the wheel excavator, the bucket can be filled clockwise and the truck can be loaded, and the bucket can be filled with another truck in reverse, so as to improve the loading efficiency.

   4) the driver of wheel excavator shall have skilled operation technology and try to adopt compound operation to shorten the operation cycle time of wheel excavator.