Adjustable three-jaw chuck type gradiograph strengthening device

Abstract

The invention discloses an adjustable three-jaw chuck type gradiograph strengthening device. The strengthening device comprises an upper end cover, a lower end cover, a plurality of strengthening blocks, a big bevel gear and a small bevel gear, wherein the big bevel gear and the small bevel gear are fixedly arranged on the lower end cover; the strengthening blocks are arranged on the big bevel gear; the upper end cover is fixedly arranged on the lower end cover. The strengthening device provided by the invention mainly utilizes the clamping principle of a three-jaw chuck for machining, the small bevel gear is rotated for driving the big bevel gear to rotate so as to cause the strengthening blocks to simultaneously outward expand or shrink at same speed, so that the change in circumscribed circle diameters on the end faces of the strengthening blocks is realized, the strengthening blocks are in contact with the inner walls of drill hole, drill rod or sleeve and the axis of the gradiograph is almost consistent with the axis of the drilling hole. The adjustable three-jaw chuck type gradiograph strengthening device is simple in structure, convenient in mounting and dismounting, excellent in strengthening effect and suitable for drilling holes with different diameters; stepless adjustment is realized; the device is portable; a mud flow path is difficult to be blocked; the cost is saved; the service life of the strengthening device is prolonged; the strengthening device is also applicable to the strengthening of other tubing gradiographs.

Description

technical field [0001] The invention relates to the field of solid core drilling, in particular to an adjustable three-jaw chuck type inclinometer centralizing device. Background technique [0002] In exploration work, due to complex strata, unreasonable construction process parameters, and unreasonable personnel operations, the drilling trajectory often deviates from the design trajectory, exceeding the allowable range, and hole deviation occurs, which will bring serious adverse effects on geological results and drilling construction. influences. When the existing technology works, the hole inclination may lead to lost ore bodies, missing faults, aggravated drill tool wear, and drill pipe breakage accidents. In order to control the hole inclination within the allowable range, it is necessary to use an inclinometer during the drilling process. To measure the inclination of the hole, the diameter of the inclinometer is fixed, and it can only measure the borehole with a certa...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that the above-mentioned existing inclinometer straightening device is fixed in size, cannot be used when the borehole diameter changes, is inconvenient to carry, easily blocks the mud flow channel, slows down, and affects the construction progress, etc., and provides An adjustable three-jaw chuck type inclinometer straightening device

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