Double-jacking down section-adding hand-changing lifting device and jacking method thereof

Abstract

The invention provides a double-top lower section-adding hand-changing lifting device and a jacking method thereof. The double-top lower section-adding hand-changing lifting device comprises a plurality of supporting pipe sections, a plurality of supporting assemblies and two hydraulic jacks; every two adjacent supporting pipe sections are detachably connected, and the supporting pipe section adjacent to the lowest supporting pipe section is a first supporting pipe section; the plurality of supporting assemblies are arranged at the tops of the supporting pipe sections correspondingly, the supporting assemblies penetrate through the corresponding supporting pipe sections in the horizontal direction, the two ends of each supporting assembly extend out of the corresponding supporting pipe section, the supporting assemblies on every two adjacent supporting pipe sections are perpendicular to each other, and the supporting assembly at the top of the first supporting pipe section is a first supporting assembly; the two hydraulic jacks are located below the two ends of the first supporting assembly respectively so as to jack the first supporting assembly. According to the double-jacking down section-adding hand-changing lifting device and the jacking method thereof, the requirement of the large-height jacking operation working condition can be met, the auxiliary measure amount can be reduced to the maximum degree, the labor intensity and the operation difficulty are reduced, and the safety and reliability are improved.

Description

technical field [0001] The invention relates to the technical field of hoisting and installation, in particular to a double-jack under-joint and hand-changing lifting device and a jacking method thereof. Background technique [0002] In the field of hoisting and installation, hydraulic jacks are commonly used to lift or lower heavy objects, but for lifting or lowering to a greater height, due to the limited stroke of the hydraulic jack, it must be realized through multiple hand changes. At present, the conventional method of changing hands is to change hands in different positions. By adding or reducing pier under the hydraulic jack to increase the jacking height of the hydraulic jack, it is also necessary to increase the support pier to support the heavy objects. There are high requirements for the local position and supporting foundation of the structure to be lifted, which requires a lot of manpower and material resources, and the labor intensity is very high, the safety ...

AI Technical Summary

Problems solved by technology

At present, the conventional method of changing hands is to change hands in different positions. The lifting height of the hydraulic jack is increased by adding or reducing pier under the hydraulic jack, and at the same time, it is necessary to increase the support pier to support the heavy objects. The requirements for the local position and supporting foundation of the lifted structure are relatively high, which requires a lot of manpower and material resources, and the labor intensity is very high, the safety is low and the operation efficiency is low

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