External-use cutter for drilling tool
A technology of cutting knives and cutting knives, which is applied in the field of underground exploration, can solve the problems of no cutting equipment and inconvenient use, and achieve the effect of reasonable structure setting and not easy to be damaged
Pending Publication Date: 2018-10-09
焦作市恒利水文地质工程有限责任公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide an external cutting tool for drilling tools to solve the problem of inconvenient use due to the lack of professional cutting equipment in the prior art
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[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0017] see figure 1 —3. The present invention provides a technical solution: an external cutting tool for drilling tools, including a casing 1, a positioning cutting knife 9 and a moving cutting knife 10. A threaded structure 13 is arranged inside the casing 1, and the casing 1 There are installation grooves 12 at the bottom, the casing 1 is a hollow cylindrical structure made of high-speed steel, and three sets of installation grooves 12 are evenly opened on ...
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The invention discloses an external-use cutter for a drilling tool. The external-use cutter comprises a sleeve, positioning cutting knives and moving cutting knives. A thread structure is arranged inside the upper portion of the sleeve, and mounting grooves are formed in the lower portion of the sleeve; the positioning cutting knives are mounted on the lower portions inside the mounting grooves, and positioning sleeves are fixed to the side faces of the positioning cutting knives; the positioning cutting knives and the positioning sleeves are fixed into the mounting grooves through positioningpins, and the upper ends of the positioning cutting knives and the upper ends of the moving cutting knives are connected together through pin shafts; and second jacking force columns are mounted at the lower ends of the moving cutting knives, springs are mounted at the upper ends of the second jacking force columns, and first jacking force columns are arranged at the upper ends of the springs. The external-use sleeve cutter for a drilling rig is connected with the drilling rig through a screw thread, the drilling rig can drive the whole cutter to rotate to cut a drilling rod, meanwhile, the positioning cutting knives and the moving cutting knives are matched like small scissors, so that when cutting the drilling rod, the cutter is not liable to be damaged.
Description
technical field [0001] The invention relates to the technical field of underground exploration, in particular to an external cutting tool for drilling tools. Background technique [0002] The downhole drill pipe needs to be cut in the event of an underground emergency, but there is no professional cutting equipment in the existing ones, which is inconvenient to use. It is urgent to develop a tool that can solve the demand for cutting the outer diameter of drilling tools in special environments. Contents of the invention [0003] The object of the present invention is to provide an external cutting tool for drilling tools, so as to solve the problem of inconvenient use due to lack of professional cutting equipment in the prior art mentioned above. [0004] In order to achieve the above object, the present invention provides the following technical solutions: an external cutting tool for drilling tools, including a casing, a positioning cutting knife and a moving cutting kni...
Claims
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CPCE21B29/00
Inventor 彭东东高伟郝小培郝恒垒
Owner 焦作市恒利水文地质工程有限责任公司