New Coring Bits
A coring bit and drill bit technology, applied in the direction of drill bits, earthwork drilling, drilling equipment, etc., can solve the problems of lost core drilling, etc., and achieve the effects of reducing labor intensity, simple structure, and saving space
Active Publication Date: 2022-05-03
天明(南京)智能装备科技有限公司
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Problems solved by technology
The above methods are all used by some people, but they all have limitations. The first three methods can basically only deal with cores when the diameter of the borehole is relatively small. It also depends to a large extent on the hardness of the rock, the slenderness ratio of the core and the integrity of the core), the method of using the full-face drill bit to break the core again almost loses the meaning of core drilling
Method used
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Embodiment 1
[0029] refer to figure 1 , combined with figure 2 , a new type of core drill bit, comprising a drill body, a lifting mechanism is provided on the upper part of the drill body, and a cutting coring mechanism is provided on the lower part of the drill body to rotate the cutter inwardly to cut the rock core;
[0030] The drill bit body includes an outer cylinder 1 and an inner cylinder 2 that fit together, and the inner and outer cylinders rotate synchronously through an axial torque transmission mechanism; in the middle of the upper part of the outer cylinder 1, there is a shaft for connecting with a drill pipe and transmitting torque. The torque transmission sleeve 3; the lifting mechanism is arranged on the outer cylinder 1;
[0031] The cutting and coring mechanism includes a swivel 4 located below the inner cylinder 2, a ring-shaped convex edge is provided on the outer peripheral wall of the lower part of the inner cylinder 2, and a circle and an annular convex edge are ar...
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A new type of core drill bit, which relates to the technical field of drilling equipment, includes a drill body, a lifting mechanism is arranged on the upper part of the drill body, and a cutting and coring mechanism is arranged on the lower part of the drill body; the drill body includes an outer cylinder and an inner cylinder that are mutually fitted The inner and outer cylinders are rotated synchronously through an axial torque transmission mechanism; a torque transmission sleeve is set in the middle of the upper part of the outer cylinder; the cutting and coring mechanism includes a swivel that is suspended from the lower part of the inner cylinder; on the side wall of the swivel The cutting mechanism is symmetrically installed; the cutting mechanism is a linkage mechanism composed of a pull rod, a push rod and a cutter head; both the pull rod and the push rod are arc-shaped rods suitable for the arc of the side wall of the swivel; two sets of wire ropes are arranged on the drill bit body Torsion mechanism; the structure design of the present invention is reasonable and reliable, greatly reduces the labor intensity, and improves the drilling efficiency of a new type of coring drill bit, which realizes the core cutting of the rock core with a relatively large diameter at the bottom of the hole, which changes the previous Drilling process.
Description
technical field [0001] The invention relates to the technical field of drilling equipment, in particular to a novel core drill bit. Background technique [0002] With the needs of production development, drilling rigs are widely used in various engineering construction fields. Due to the differences in drilling materials and operating environments, people have developed many different types of drilling rigs for various conditions of use. In the field of engineering drilling, when encountering large-diameter rock-socketed drilling, manual digging and percussion drilling can be used. Hole forming, rotary drilling rig drilling, full-face reverse circulation drilling rig drilling and other methods, with the rise of labor costs, the improvement of safety requirements and the increasing requirements for drilling efficiency, the current industry The mainstream methods used in large-diameter rock-socketed drilling are two hole-forming methods: full-face reverse circulation drilling...
Claims
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IPC IPC(8): E21B10/02E21B25/10
CPCE21B10/02E21B25/10
Inventor 卢明立刘祥军刘攀军陈庚陈义俊
Owner 天明(南京)智能装备科技有限公司