Angle-adjustable single-hook two-point hoisting device for long and heavy object and application method

Abstract

The invention provides an angle-adjustable single-hook two-point hoisting device for a long and heavy object and an application method. The device comprises two pulley blocks, a steel wire rope winding drum, two fixed end plates, a steel wire rope and two fixed pulley shafts, wherein each pulley block comprises a fixed pulley and a movable pulley with a lifting hook, the steel wire rope winding drum and the two fixed pulleys form a triangular shape, the upper steel wire rope winding drum above is rotatably connected between the two fixed end plates, the two fixed pulley shafts are connected between the fixed end plates at the two sides below the winding drum, the two fixed pulleys below penetrate through the two fixed pulley shafts respectively, the fixed pulleys can rotate on the respective fixed pulley shafts and freely slide left and right, and the winding drum and the pulley blocks are connected through symmetrical reverse penetrating and winding of the steel wire rope. Therefore,it is guaranteed that along with the rotation of the winding drum, when one pulley block ascends, the other pulley block descends synchronously, the purpose of adjusting the angle of the long and heavy object is achieved, and the aerial installation efficiency of the long and heavy object is improved. According to the device, the long and heavy object can be hoisted by only one crane, and the gravity center does not need to be accurately determined.

Description

technical field [0001] The invention belongs to the technical field of lifting devices for long and heavy objects, and in particular relates to an angle-adjustable single-hook two-point lifting device for long and heavy objects and a use method thereof. Background technique [0002] In the process of engineering construction, there are often long and heavy components or equipment that need to be installed in the air according to the designed inclination angle. Usually, the main hoisting method is double-machine hoisting, but sometimes due to site reasons, The working space is too narrow to satisfy the double-machine station, so a single-machine single-hook can only be used for hoisting. This single-machine single-hook method, whether it is single-point hoisting or double-lifting point hoisting, needs to accurately find the center of gravity and lifting point of the heavy object before hoisting. In order to maintain the angular balance of the weight. For long and heavy objec...

AI Technical Summary

Problems solved by technology

[0002] In the process of engineering construction, there are often long and heavy components or equipment that need to be installed in the air according to the designed inclination angle. Usually, the main hoisting method is double-machine hoisting, but sometimes due to site reasons, The working space is too narrow to satisfy the double-machine station, so a single-machine single-hook can only be used for hoisting. This single-machine single-hook method, whether it is single-point hoisting or double-lifting point hoisting, needs to accurately find the center of gravity and lifting point of the heavy object before hoisting. In order to maintain the angular balance of heavy objects

For long and heavy objects, due to reasons such as design, production, and materials, it is very difficult to calculate and find the center of gravity, and it is also difficult to find the center of gravity and the lifting point. This requires relatively high requirements for on-site construction personnel. After the angle deviation occurs, it is mainly done by manually pulling the rope. Adjusting the angle of the heavy object makes it difficult to find the lifting angle, which leads to extremely difficult and complicated hoisting and positioning on site, and even poses safety hazards, which affects the efficiency of the installation of long and heavy objects

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