Basic types of the hottest mechanical injuries

The basic type of mechanical injury

the injury caused by mechanical equipment to people can be said to make us very sad. This kind of injury includes the physical and psychological injury of the casualties themselves, and the psychological injury of the relatives of the casualties. No matter the injury of the party, or the injury of the relatives or bystanders of the party, we don't want similar injuries to happen again. Next, we analyze the damage caused by machinery to avoid unnecessary losses due to the sharp rise of industrial premiums in production

1. Hazards of winding and twisting. It is the mechanical components that cause this kind of injury. Such as shaft parts, including couplings, spindles, lead screws, etc; Protruding shapes on rotating parts, such as protruding keys, bolts or pins installed on shafts, simple and convenient nails for replacement, handles on pistols, etc; The opening part of rotating mechanical parts, such as the spokes of round wheel parts such as sprocket, gear, belt pulley, and the hollow part of rotating cam. Rotating mechanical parts wind human hair, ornaments (such as necklaces), gloves, loose sleeves or hem with rotating parts, and then cause injury to people

2. Danger of crushing, shearing and impact. The components that cause this kind of injury are those that do reciprocating linear motion. Its motion trajectory may be horizontal, such as the moving work of large machine tools, the ram of twist planer, the belt chain in operation, etc; It may also be vertical, such as the pressing device and blade of the shear, the slider of the press, the lifting table of large machine tools, etc. The relative motion state of two objects may be close, getting closer and closer, or even finally closed; It may also be the passing type. When it is relatively close, it will move wrongly and pass by. Pinch, collision or shear injury to people caused by linear motion, especially between two parts in relative motion, moving parts and stationary parts

3. Danger of introduction or involvement in rolling. The main harm caused by this kind of injury is that the material through repeated experiments and continuous improvement of the sports clothes that cooperate with each other, for example, between the meshing gears and the racks of the gears, the tightening point of the belt and the pulley, the chain and the sprocket entering the meshing part, and the introduction or involvement caused by the mouth between the two rollers doing relative rotary motion; Rolling caused by rolling rotation of wheels and tracks, wheels and roads, etc

4. Danger of flying objects hitting. Due to the release of mechanical energy such as fracture, looseness, falling off or elastic potential energy, the uncontrolled object is thrown or bounced, causing injury to the team. For example, the destruction of the shaft causes the pulley, flywheel and other moving parts assembled on it to fall or fly out; Due to the loosening or falling off of bolts, the fastened moving parts are ejected by the potential energy of elastic elements, such as the fracture of springs, belts, etc; High pressure fluid jet caused by liquid or gas potential under pressure and vacuum

5. Danger of falling objects. Objects at high positions have potential energy. When they accidentally fall, the potential energy is converted into kinetic energy, causing damage. For example, parts, tools or other objects falling from high places (even if the quality is very small); The hanging parts of the suspended objects are damaged or the clamps are not firmly clamped, causing the objects to fall; Due to uneven mass distribution and unstable center of gravity, overturning and rolling occur under the action of external forces; Injury caused by over travel of moving parts

6. Danger of cutting and scratching. The sharp edge of cutting tool, the burr on the surface of parts, the sharp flash of workpiece or waste, the sharp edge, sharp angle, sharp edge, rough surface of mechanical equipment (such as grinding wheel, blank), etc., regardless of whether the state of the object is moving or stationary, these hazards caused by the shape will constitute potential hazards

7. Danger of collision and scratching. The protruding and hanging parts of the mechanical structure, such as the supporting legs and suspenders of the crane, the handle of the machine tool, and the parts of long and large machined parts extending out of the machine tool. These objects, whether stationary or moving, may pose a danger

8. Danger of falling and falling. Stumbling and falling injury caused by disordered stacking on the ground or uneven ground; The friction of the contact surface is too small (smooth, greasy, snow, etc.) causing slipping and falling; People fall from high places, step into pits and fall by mistake, etc. If secondary injury is caused by falling, the consequences will be more serious

mechanical hazards are largely manifested in the contact injury between personnel and movable parts. Various forms of mechanical hazards or mechanical hazards are often intertwined with other non mechanical hazards. When carrying out hazard identification, we should start from the whole mechanical system, and comprehensively consider the different states of machinery, different manifestations of the same hazard, the relationship and role between different risk factors, as well as different forms of apparent or potential hazards