Engineering drill bit fisher

Abstract

The invention relates to the field of drilling, and discloses an engineering drill bit fisher. The engineering drill bit fisher comprises a fisher body, wherein drill bits which can be matched with each other are arranged on the lower side of the fisher body, fishing handles which are symmetrical about the circle center of the drill bits are fixedly arranged on the upper end surfaces of the drill bits, and a power cavity is formed in the fisher body. According to the drill bit fisher, the turnover state of a protection plate is controlled by utilizing a lifting assembly, so that the positioning of the fisher body can be realized; in the fishing process, the unfolded protection plate can prevent soil layers in a pit from collapsing to bury the drill bits, so that the fishing efficiency of the drill bits is effectively improved, and the fishing process of the drill bits is accelerated; meanwhile, the fishing handles are explored by utilizing a rotatable fishing ring, so that the drill bits are convenient to lock; and meanwhile, a replaceable fishing disc is utilized, so that the fishing range of the drill bits is expanded, and the problem of limitation of the model of the fishing drill bits is solved.

Description

technical field [0001] The invention relates to the technical field of drilling, in particular to an engineering drill bit overshot. Background technique [0002] Drilling operations are required during the construction process of the project. Due to the influence of various uncertain factors, the drill bit falls into the pit, which affects the construction process. At this stage, the dropped drill bit is generally salvaged by dispatching personnel. If the soil layer is not protected, it is easy to cause the soil layer to collapse, which seriously endangers the life safety of the salvage personnel. When the existing drill bit overshot is used for salvage, the drill bit cannot be well protected. During the salvage process of the drill bit, the vibration of the equipment is easy It causes the soil layer to collapse, thereby affecting the salvage progress, and the existing overhauler cannot follow the drill bit model for proper adjustment. Contents of the invention [0003] ...

AI Technical Summary

Problems solved by technology

[0003] An engineering drill overshot provided by the invention has the advantages of high-efficiency salvage for the drill bit, and solves the phenomenon that the drill bit is buried by the collapse of the soil layer during the drill bit salvage process. At the same time, the salvage device can be replaced according to different drill bit models, and the overhauler can be enlarged. scope of application

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