Carter
Keyes
Komatsu
Hitachi
Sumitomo?
Daewoo
Modern Times
Headquartered in Sweden)
Xugong
Sany heavy industry
Extended data:
Special operation certificate is a skill that operators engaged in special types of work must be familiar with the safety knowledge of the corresponding special types of work and prevent all kinds of accidents. Require employees to hold certificates (IC cards).
That is, the "People's Republic of China (PRC) Special Operation Certificate" issued by the State Administration of Work Safety, which is common all over the country. The old certificate is reviewed every 2 years, and the new special operation certificate is reviewed every 3 years 1 time.
Excavators, also known as digging machines, are earth-moving machines that use buckets to dig materials above or below the bearing surface, load them into transport vehicles or unload them into the yard.
The excavated materials are mainly soil, coal, sediments and pre-loosened soil and rocks. General learning content of excavator operation: safety operation rules, daily maintenance, basic structure and working principle, skill training and practical operation (walking, digging, leveling, loading, getting on and off the flat plate, etc.) of hydraulic excavator. ).