During the maintenance of the grab, we need to pay more attention to the process. The grab is a common machine. In ordinary work, there may be potential safety hazards. Therefore, we need to pay special attention to the maintenance of the product every day, and pay attention to the details when working.
If the lifting capacity indicating device fails and cannot be used, the lifting capacity shall be determined according to the provisions of the lifting performance table, and the weight of the spreader shall be within the total lifting capacity.
  During lifting operation, no one is allowed to stand under the jib, and it is forbidden to lift buried or inclined heavy objects to avoid side load; Carefully check before operation and prohibit the use of unqualified steel wire rope and lifting chain; Do not drop the arm when lifting heavy objects; When the arm must be lowered, the heavy object shall be lowered and lifted again; The throttle shall be small when dropping the arm and large when lifting the arm; The turning action shall be stable, and sudden stop is not allowed; When the lifting weight is close to the rated lifting weight, it shall not rotate in the air above 0.5m above the ground; When the crane is lifting heavy load, the truck crane shall be repaired. It is recommended to read some books about grab and several factors affecting the lifting weight of grab crane.
  In terms of maintenance, first of all, there should be professionals to strengthen management, understand defense measures, establish and improve the windproof and rainproof emergency plan, and hold plan drills regularly.
  Secondly, regularly check and maintain all parts, and check whether the connection of important parts is fastened. The grab manufacturer pointed out that the maintenance work, from daily maintenance to attention at work, is very important. It is not only responsible for the work, but also responsible for its own safety.
  1. The grab needs to be checked once a day, especially for the grab with heavy work. Parts meeting the scrapping standard shall be scrapped in time.
  2. Check the fixation and wear of steel wire rope; Check the wear of pulley shaft and rim; Check the fastening and damage of bolts and nuts; Check the wear of the cutting edge. The cutting edge shall not be skewed or cracked; Keep good lubrication.
  3. When closing, the dislocation difference between the two horizontal and vertical edges and the gap at the bucket mouth contact shall not be greater than 3mm, and the length of the larger gap shall not be greater than 200mm.
  4. When opening, the non parallel difference of bucket mouth shall not exceed 20mm.
  5. After lifting, the symmetrical center line of the bucket mouth and the vertical center line of the grab shall be in a vertical plane when the grab is opened or closed, and the deviation shall not exceed 20mm.