The use of cranes or jib cranes to lift personnel will bring great danger to the employees being lifted. In order to avoid casualties, OSHA regulations (Federal Regulations, Title 29, 1926.550) restri[…]
1. Operation and modification of crane In the actual operation of any type of crane, the employer must follow the manufacturer’s technical requirements and instructions. If the manufacturer does[…]
American crane-related standardization bodies There are many organizations in the United States related to the formulation and revision of crane standards, mainly including: American National Standard[…]
The development process of American crane industry The United States is one of the first countries in the world to use electric cranes. Since the American crane manufacturer Franklin produced a series[…]
1. When the crane is not working, the time allowed for heavy objects to hang in the air is. (D) A, 1 minute B, 3 minutes C, 5 minutes D, not allowed 2. How long the crane wire rope needs to be greased[…]
The correct use and maintenance of the garbage grab bridge crane have a great relationship with the safety of production and the service life of the crane. Therefore, the crane must be regularly inspe[…]
After a period of use of the bridge-type single-girder crane, some users may find that the crane wobbles when it starts or stops. This situation will have a negative impact on the crane equipment. So […]
In the production of enterprises, single-girder bridge cranes are widely used because of their low price, simple installation and convenient operation. However, many people have limited understanding […]
As a commonly used lifting mechanism on single-beam cranes, wire rope electric hoists also need safety protection devices to protect the safe operation of the equipment. Some friends do not know much […]
Whether it is a variety of cranes or traveling cranes in the installation and maintenance process, they need to strictly abide by the construction requirements of special equipment to operate, so as t[…]
