Abstract: The present disclosure discloses a regional gridding cumulative environmental risk evaluation system and method based on a risk field, and belongs to the fields of environmental sciences and environmental risks. The cumulative environmental risk evaluation system comprises a data acquisition unit, a data storage unit, an evaluation analysis unit, and a risk visualization unit. The evaluation method includes: establishing a cumulative environmental risk index evaluation model based on a cumulative environmental risk field intensity index, a cumulative environmental risk control mechanism index, and a cumulative environmental risk receptor index, evaluating a cumulative environmental risk through the established model, and determining a grade of the cumulative environmental risk of the evaluation region.

Abstract: The present disclosure provides an automatic chuck apparatus comprising a mechanical chuck, a mechanical chuck mounting bracket, a hydraulic motor, a lifting mechanism, a chuck key and a lifting cylinder. The mechanical chuck is mounted above the mechanical chuck mounting bracket. The hydraulic motor, the lifting mechanism and the lifting cylinder are mounted below the mechanical chuck mounting bracket. The hydraulic motor is configured to control the rotation of the chuck key, the lifting cylinder is configured to drive the chuck key to ascend or descend through the lifting mechanism, thereby the mechanical chuck is locked or loosened by the chuck key. The present disclosure further provides a grinding wheel cutting apparatus and a cutting method. In the present disclosure, the locking of the chuck is automatically controlled, thereby improving the working efficiency and ensuring sufficient locking force of the chuck.

Abstract: The present disclosure provides a grinding wheel cutting apparatus comprising a first laser distance sensor, a master controller and a grinding wheel. The first laser distance sensor is communicatively coupled to the master controller. The laser distance sensor is configured to obtain an outer diameter of a rod workpiece. The master controller is configured to determine a segment length of a segment to be cut from the rod workpiece based on the outer diameter, a material density of the rod workpiece and a preset segment weight. The master controller is configured to perform a control to circularly cut the rod workpiece with the grinding wheel according to the segment length. The present disclosure further relates to a cutting method using the grinding wheel cutting apparatus.

Abstract: The present disclosure provides a grinding wheel apparatus comprising a grinding wheel, a flange, a pull rod and a spindle. The grinding wheel is mounted on one side of the flange, and the other side of the flange is a tapered bucket, the tapered bucket has a buckle slot. The pull rod passes through the spindle, and a pull rod head of the pull rod is fixed to one end of the spindle, the tapered bucket is inserted into the spindle from the other end of the spindle, and the buckle slot is engaged with the T-shaped buckle of the pull rod in the spindle to fix the flange on which the grinding wheel is mounted to the other end of the spindle. The present disclosure further provides a grinding wheel cutting apparatus comprising the grinding wheel apparatus, and a cutting method using the grinding wheel cutting apparatus.