Derrick capable of being folded

Abstract

The invention belongs to the technical field of petroleum equipment, and discloses a derrick capable of being folded. The derrick comprises a derrick body. The derrick body is segmented into a left section and a right section. Two sets of connection lug plates are arranged on the two sides of the side wall of the joint of the left section and the right section respectively. One set of connection lug plates are connected through an outer side pin, and the other set of connection lug plates are connected through an inner side pin. Fixed lug plates are arranged at the bottoms of the other ends of the left section and the right section respectively. Pin holes are formed in the fixed lug plates. After the outer side pin is pulled down, the left section and the right section can horizontally rotate around the inner side pin. When the pin holes in the fixed lug plates coincide, the outer side pin is inserted in the pin holes for fixation, and the derrick body is folded into a quadrangle with the four edges closed. By means of the different installation positions of a positioning block on the inner side pin, the matching gaps between the connection lug plates and the diameter-variable pins are changed, the connection lug plates can rotate, the left section and the right section of the derrick body are unfolded, and therefore the size of the derrick is reduced, the requirement for railway transportation is met, and the on-site assembling efficiency of the derrick is improved.

Description

technical field [0001] The invention belongs to the technical field of petroleum equipment, in particular to a foldable derrick that can reduce the transport volume and can be quickly installed. Background technique [0002] At present, the main structure of the derrick used in drilling operations is composed of left and right sheet frames and connecting ear plates. There are two design forms of the connecting ear plates: one is detachable, and the other is that the connecting ear plates and the sheet frame are welded as a whole. [0003] For the detachable form of the connecting ear plate, each component is packaged and transported separately when the derrick is transported. Not only are there many transport units, but also the installation time to the site is long and labor-intensive. For the derrick form in which the connecting lug plate and the sheet frame are welded together, although the overall transportation can be realized and the on-site installation time is reduce...

AI Technical Summary

Problems solved by technology

For the derrick form in which the connecting lug plate and the sheet frame are welded together, although the overall transportation can be realized and the on-site installation time is reduced, due to the working performance of the derrick and the installation requirements of the accessories, the overall size of the derrick is relatively large, exceeding the limit of railway transportation The size increases a lot of transportation costs and even makes it impossible to realize railway transportation, so that the scope of use of this type of derrick is greatly limited

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