Reducer drill bit and motor magnetically coupled flip feed mechanism
A feeding mechanism and magnetic coupling technology, applied in electric brakes/clutches, electric components, driving devices for drilling in boreholes, etc., can solve problems such as easy breakage of flexible shafts, damage to motors and control systems, and unreliability
Active Publication Date: 2018-08-24
王少斌
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Problems solved by technology
[0003] At present, there are two types of rock core tools for downhole formations on the market, one is hydraulic motor-driven drill bits, and the other is electric motors that drive reducers and drill bits through flexible shafts. The disadvantages of hydraulic motor coring tools are low working efficiency and inconvenient maintenance.
The disadvantage of driving the reducer through a flexible shaft is that the flexible shaft is easy to break and is unreliable. The common disadvantage of the two types is that if the hydraulic oil used for dynamic balance inside the hydraulic motor and reducer leaks, the downhole high-pressure mud will invade the entire instrument. Damage to the motor and control system
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[0037] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.
[0038] Such as Figure 1 to Figure 4 As shown, the reducer drill bit and the motor magnetically coupled turning feed mechanism 1 includes a cylindrical main base 2 , and a sliding notch 21 is arranged in the main base 2 . A guide bracket 3 is provided in the sliding notch 21, and the guide bracket 3 includes a pair of guide substrates 30 arranged in parallel. The outer bottom of the guide substrate 30 is respectively provided with a guide notch 301, and the inside of the head of the guide substrate 30 A sliding plate installation notch 302 arranged longitudinally is provided respectively, and an inner drill notch 31 and a pair of inner motor notc...
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The invention discloses a speed reducer drill and motor magnetic coupling overturning and feeding mechanism. The speed reducer drill and motor magnetic coupling overturning and feeding mechanism comprises a main substrate, a guide bracket, a pair of driving sliding plates, a drill assembly and a motor assembly, wherein a sliding notch is formed in the main substrate; the guide bracket is arranged in the sliding notch, and the guide bracket comprises a pair of parallel guide base plates; the drill assembly is rotatably arranged between the guide base plates; the motor assembly is movably arranged between the guide base plates; and the drill assembly is separably connected with the motor assembly through magnetic coupling, and the drill assembly and the motor assembly are synchronously driven by the driving sliding plates, so that the drill assembly and the motor assembly are connected or disconnected. According to the speed reducer drill and motor magnetic coupling overturning and feeding mechanism, a motor is separated from a speed reducer and is connected with the speed reducer through the magnetic coupling. If balance oil in the speed reducer leaks, external high-pressure mud invades the speed reducer, but the motor and a control system cannot be damaged.
Description
technical field [0001] The invention relates to an oil exploration device, more precisely, a reversing feed mechanism with a reducer drill bit and a motor magnetically coupled. Background technique [0002] In the process of oil development, it is necessary to take out the rock core of the downhole formation for analysis of the rock and formulate the oil well production plan. [0003] At present, there are two types of rock core tools for downhole formations on the market, one is hydraulic motor-driven drill bits, and the other is electric motors that drive reducers and drill bits through flexible shafts. The disadvantages of hydraulic motor coring tools are low working efficiency and inconvenient maintenance. . The disadvantage of driving the reducer through a flexible shaft is that the flexible shaft is easy to break and is unreliable. The common disadvantage of the two types is that if the hydraulic oil used for dynamic balance inside the hydraulic motor and reducer leak...
Claims
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IPC IPC(8): E21B4/04H02K49/00
CPCE21B4/04H02K49/00
Inventor 王少斌
Owner 王少斌