Movable type crane

Abstract

The invention discloses a movable type crane and relates to a crane. The movable type crane comprises a base. A crane rod is arranged on the base. A first rotating shaft is arranged on the crane rod. A balance arm is arranged on the first rotating shaft in a rotary manner. A sliding sleeve is arranged on the balance arm in a movable manner. A second rotating shaft is arranged on the sliding sleeve. A hoisting arm is arranged on the second rotating shaft in a rotary manner. A support sleeve is further arranged on the crane rod in a sliding manner. A third rotating shaft is arranged on the support sleeve and provided with a support arm. A fixed sleeve is arranged on the hoisting arm in a sliding manner and provided with a fourth rotating shaft. The fourth rotating shaft is connected with the support arm. A detachable counterweight support is arranged at the bottom end of the balance arm. A jack is arranged at the top end of the hoisting arm. Compared with the prior art, by means of the movable type crane, a cargo boom can be adjusted; the load moment can be adjusted according to the weight of cargo, the height to which the cargo needs to be hoisted and the position where the cargo is located; stability of the crane is maintained; and basic hoisting performance and multi-environment applicability of the crane are greatly improved.

Description

technical field [0001] The invention relates to a crane, especially a mobile crane. Background technique [0002] Crane is a popular name for cranes, which are widely used in a series of heavy industrial products such as ships, equipment, machinery, and molds. In terms of size, cranes are divided into small cranes and large cranes. The large cranes are basically fixed, and the small cranes are basically mobile. The small crane is also called a hoist, a small hoist, and a portable hoist. It is a small mechanical equipment with excellent performance and extremely wide application. Universally applicable to all walks of life. For the construction field, small cranes are suitable for lifting operations of high-rise buildings, such as various building materials and various decoration materials, especially for long and wide materials such as wooden boards and woodworking boards that are inconvenient to carry in corridors. unique advantage. However, compared with the fixed lar...

AI Technical Summary

Problems solved by technology

However, compared with the fixed large cranes, the small cranes are not only far inferior to the large cranes in terms of lifting capacity, but also far inferior in the stability of the entire crane. Because of the different fixing forms, once the small crane is operated Improper operation is very prone to overturning and causing accidents

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