Electric block type double-rail and single-main-beam crane

Abstract

The invention relates to an electric block type double-rail and single-main-beam crane. The electric block type double-rail and single-main-beam crane comprises a main beam. An upper wing plate is welded to the top of the main beam. Webs are welded to the lower surface of the upper wing plate. Traveling rails are arranged at the lower ends of the webs. An upper wing plate strengthening plate is welded between the upper wing plate and the webs. Web strengthening rib plates are welded between the upper wing plate strengthening plate and the webs. An electric block is installed in the main beam and connected with an electric block base. A trolley frame is connected with the lower portion of the electric block base. The trolley frame is provided with walking devices which are internally provided with walking wheels. The walking wheels are connected with drive motors, and the electric block is connected with a pulley block. The pulley block is connected with a lifting hook. Buffering devices are arranged at the front end and the rear end of the trolley frame. Limiting devices are arranged at the lower portions of the front end and the rear end of the main beam. The electric block type double-rail and single-main-beam crane has the beneficial effects of being reasonable in design, simple in structure, convenient to detect and maintain, large in lifting height, good in lifting performance, safe, reliable, stable in operation, long in service life and high in working efficiency.

Description

technical field [0001] The invention belongs to the technical field of hoisting machinery equipment, in particular to a single main girder crane, in particular to an electric hoist type double-rail single main girder crane. Background technique [0002] In recent years, China's modernization and economy have developed rapidly. With the continuous development of China's industrial construction and logistics trade, the demand for large-scale lifting machinery and equipment is increasing, and lifting machinery and equipment have been rapidly developed and applied. , as an important lifting machinery equipment, the application and development of cranes are becoming more and more extensive. With the continuous advancement of science and technology and the rapid development of various industries, various aspects of crane performance and design have been proposed Higher and higher requirements have prompted the crane to continue to develop towards intelligence, safety, and light we...

AI Technical Summary

Problems solved by technology

[0002] In recent years, China's modernization and economy have developed rapidly. With the continuous development of China's industrial construction and logistics trade, the demand for large-scale lifting machinery and equipment is increasing, and lifting machinery and equipment have been rapidly developed and applied. , as an important lifting machinery equipment, the application and development of cranes are becoming more and more extensive. With the continuous advancement of science and technology and the rapid development of various industries, various aspects of crane performance and design have been proposed Higher and higher requirements have prompted the crane to continue to develop towards intelligence, safety, and light weight; there are many types of cranes, and the structure of the crane is mainly composed of main beams, end beams, electric trolleys, lifting mechanisms, and electrical appliances. At present, the lifting mechanism of the commonly used single main girder crane is electric hoist. The common electric hoist type single main girder crane is mostly a monorail main girder structure with an inverted T-shaped track at the lower end of the main girder. Cranes with this structure form The electric hoist is located at the lower part of the main beam and runs along the inverted T-shaped track. The distance between the upper wing plate of the main beam and the electric hoist is relatively large, which cannot make full use of the height space of the workplace and affects the lifting height and working efficiency of the crane; in addition, the When the crane with this structure is used for outdoor work, the electric hoist of the crane is exposed outside. In rainy and snowy weather, the electric hoist is easy to get wet, causing the internal electrical components to be damaged by water and cannot be used, which affects the electric hoist. The service life and work efficiency will cause casualties in severe cases, and the safety performance cannot be guaranteed; the welding quality of the side plate of the main girder of the monorail girder crane is not easy to guarantee, and the side plate of the main girder is prone to deformation as the use time increases , reduce the rigidity of the main girder, thereby affecting the bearing capacity of the main girder and the lifting performance of the crane; the electric hoist of the monorail main girder crane runs on one track, and is easily disturbed by external conditions, and the electric hoist is not stable during the working process , the safety factor is low, and there are certain potential safety hazards; therefore, design a reasonable design, simple and compact structure, convenient detection and maintenance, good rigidity, sensitive operation, low noise, high lifting height, good lifting performance, safe and reliable, and easy to operate. An electric hoist double-rail single-girder crane with stability, long service life and high working efficiency is very necessary. It is of great significance and helpful to the development of the current crane, and has important research value for the future development and research of the crane.

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