Flip and Skid Mast Derrick

Abstract

The invention provides a turnover sliding mast headframe. The turnover sliding mast headframe comprises a headframe body, a pressurizing and lifting system, a sliding system and a turnover system. The headframe body is of a box type structure; the pressurizing and lifting system is arranged on the headframe body; the sliding system is connected to the headframe body and drives the headframe body to move horizontally, and the sliding system comprises a sliding frame and a sliding oil cylinder capable of driving the headframe body to slide on the sliding frame; the turnover system is connected with the sliding system and drives the sliding system to turn over, and the turnover system comprises a turnover base and a turnover oil cylinder capable of driving the sliding frame and the headframe body to turn over. The turnover sliding mast headframe has the turnover function and the sliding function and is compacted to the ground through sliding, in the working process, lifting reactive force is directly transmitted to the ground through the headframe body, and therefore stress on a connecting part is greatly reduced; as the box type structure is adopted in the headframe body, the turnover sliding mast headframe is compact in structure, large in bending-torsional resisting strength, safe and reliable.

Description

technical field [0001] The invention relates to a derrick, in particular to an overturning and sliding mast derrick with good safety protection. Background technique [0002] The overturning derrick is one of the most important components of petroleum geophysical drilling equipment. The overturning derrick of the drilling rig has been widely used in the geophysical drilling rig equipment, and most of them are truss structures. The lifting force of the device will be fully loaded on the pin shaft of the joint between the derrick and the derrick support, and then transmitted to the ground through the chassis. Therefore, the strength of the pin shaft is relatively high, and it is easy to affect the normal operation of the drilling rig. [0003] In addition, the existing derrick is an "M"-shaped truss structure derrick welded by profiles. Although the structure is relatively simple, in order to ensure the necessary bending and torsional strength, the external structure size (tha...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a flip-sliding mast derrick to solve the problem that after the derrick is flipped to a vertical state and directly locked, the lifting reaction force of the pressurized lifting device is all loaded on the drilling rig, which easily affects the normal operation of the drilling rig Defects

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