Telescoping derrick with great width in bottom
A technology of derrick and opening size, which is applied in the direction of drilling equipment, earthwork drilling and production, supporting devices, etc., which can solve the problems of overrunning derrick transfer length and high turning radius requirements, so as to facilitate large-scale wellhead operation equipment and shorten the transfer length , The effect of opening the drill floor
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[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0025] The structure of the present invention is to include the lower section derrick 2, and the upper section derrick 1 that can slide in the lower section derrick 2,
[0026] refer to figure 1 , figure 2 , the lower section derrick 2 is a variable cross-section rigid frame structure, which is fixedly connected by three sections from top to bottom in sequence, wherein the top section 2-1 and the bottom section 2-3 are rectangular rigid frame structures, and the opening of the bottom section 2-3 is obviously larger than The opening of the top section 2-1, the middle section 2-2 as a transition section, and the two sides of the middle section 2-2 are inverted V-shaped variable cross-section structures (similar to trapezoidal);
[0027] The upper and lower ends of both sides of the top section 2-1 are respectively equipped with a guide wheel...
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Abstract
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