Bulk cargo crane

Abstract

The invention discloses a bulk cargo crane, which is characterized in that a supporting seat on a lower swing mechanism (8) is hinged with a hinge point O of a main arm frame AB (21) of a parallel four-bar linkage arm frame (2); the parallel four-bar linkage arm frame (2) is driven by a rope winding subsystem (4); a motor drives a wire rope reel (41) to simultaneously retract and release two wire ropes to respectively reach a head part (44) of a pull rod and a tail part (45) of the pull rod through a bend pulley (42) and a bend pulley (43), and the balance weight and the angle of a movable arm are changed for grabbing cargoes; a tower frame (1) is installed on the lower swing mechanism (8); and a rope winding system (5) is used for changing amplitude pulls the head part of the main arm frame (21) to realize the pitching movement through the retraction and releasing of the wire ropes. The invention adopts a simple, easy and efficient wirerope reel mode to realize the purpose of rigidly grabbing the cargoes, thereby greatly improving the loading and unloading efficiency; because the parallel four-bar linkage arm frame is adopted, the installed power of the whole crane is low, and the energy saving effect is obvious; and in addition, the rope winding system of the invention simply and effectively controls the crane to operate through a novel winding mode, has few maintenance points and can be maintained quickly and conveniently.

Description

technical field [0001] The invention relates to lifting equipment for bulk cargo terminals, bulk cargo yards and steel mills, more specifically, a crane for rigidly grabbing cargo, especially suitable for handling bulk cargo that is difficult to grab, such as scrap steel and ore, and can take care of both Various bulk materials such as coal, salt, timber, etc. Background technique [0002] Although container transportation, as a modern mode of cargo transportation, has been greatly promoted and popularized in the world in recent years. However, bulk cargo transportation still occupies a very important position. Coal, ore, chemical fertilizers, steel and other items related to the national economy and people's livelihood are still mainly bulk cargo. In addition, some inland river ports can only use bulk cargo transportation due to the limitation of water depth and other conditions. [0003] The global financial crisis in 2008 was a devastating blow to the container shipping...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects such as short service life, insufficient grasping force, high manufacturing cost and high maintenance cost of the current machinery for processing scrap steel and other bulk cargoes, the present invention provides a bulk cargo crane, the parallel four-bar linkage arm of the invention frame, a new type of rope winding system and an environmentally friendly all-electric drive system, which can effectively save energy, provide sufficient gripping force and relatively low cost, and are suitable for grabbing scrap steel and other common bulk materials that are difficult to grab

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