Pipeline construction straddle carrier and straddling method

Abstract

The invention discloses a pipeline construction straddle carrier and a straddling method, and relates to the technical fields of hoisting, off-road transportation, and pipeline system. The straddle carrier comprises a frame, a door type elevating and hoisting system, which is symmetrically arranged front-to-rear, and a moving system; the frame comprises two trusses and one rack; two ends of each truss are respectively connected to the external column sleeves of the door type elevating and hoisting system; the front surface of the rack is in a trapezoid shape, and the side surface is in a splayed saddle structure. The upper parts of two trusses are both provided with flanges and fixed to the base of the rack through bolts. The door type elevating and hoisting system comprises two columns, a hoist beam, and a hoisting tool. The moving system is installed on the bottoms of the external sleeves of the columns. The provided straddle carrier can bear a maximal weight of 13 tons, can be applied to construction of pipelines with a diameter of 1422 millimeters or less in a tunnel, and integrates the functions of pipeline transportation, hoisting, and assembly together.

Description

technical field [0001] The invention relates to the technical fields of hoisting, off-highway transportation and pipeline systems. It is a kind of equipment integrating hoisting and transportation, which is used for loading, unloading, transporting and assembling steel pipes for pipeline construction in tunnels, especially a straddle carrier for pipeline construction and Straddle method. Background technique [0002] At present, with the rapid development of large-diameter long-distance pipeline construction in China, in recent years, pipeline crossing construction technology in tunnels is often used in high and steep mountainous areas where pipelines pass. Due to the narrow working surface and long distance in the tunnel, large general-purpose machinery cannot enter the tunnel, which often brings great difficulties to pipeline construction equipment, steel pipe transportation and pipeline installation, and seriously affects the construction progress of the project. [0003...

AI Technical Summary

Problems solved by technology

Due to the narrow working surface and long distance in the tunnel, large general-purpose machinery cannot enter the tunnel, which often brings great difficulties to pipeline construction equipment, steel pipe transportation and pipeline installation, seriously affecting the construction progress of the project

[0003] In the construction of pipelines in tunnels in mountainous areas, there are mainly the following problems: (1) Due to the narrow working space, ordinary pipeline hoisting equipment cannot be used for the handling and hoisting of steel pipes; (2) The steel pipes are transported by laying rails on the ground. It is cumbersome and costly, and it is difficult to form a mechanized flow operation, which affects the efficiency of pipeline construction

However, there are the following deficiencies in actual use: (1) The equipment has a single function and cannot meet the needs of long-distance transportation; (2) The clearance height of the equipment hoisting is limited, and the adaptability to the change of the tunnel section size is poor; (3) The equipment itself does not drive The power supply of equipment during construction requires frequent switching cables

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