Eccentric drilling device
An eccentric drilling and eccentric technology, which is used in drill pipes, drill pipes, and earth-moving drilling and mining, etc., can solve the problems of heat generation, difficult disassembly, and blackening of the force position.
Pending Publication Date: 2020-04-24
CHANGSHA HEIJINGANG IND CO LTD
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Problems solved by technology
[0006] In view of this, the purpose of the present invention is to provide an eccentric drilling tool, which can effectively solve the problem of blackening, heating and difficult disassembly of the stressed position
Method used
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Embodiment Construction
[0024] The embodiment of the invention discloses an eccentric drilling tool, which can effectively solve the problem that the force-bearing position is blackened, generates heat and is difficult to disassemble.
[0025] 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.
[0026] see Figure 1-Figure 3 , figure 1 A schematic diagram of a three-dimensional structure of a drill bit provided by an embodiment of the present invention; figure 2 Schematic diagram of the cross-sectional structure of the eccentric drilling t...
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The invention discloses an eccentric drilling device. The eccentric drilling device comprises a drill, an eccentric expanding cover and a rod stabilizer, wherein an eccentric neck rod part is arrangedin the middle portion of the drill, an eccentric hole of the eccentric expanding cover sleeves the eccentric neck rod part, the eccentric hole and the eccentric neck rod part are in rotating fit, thefront portion of the drill is provided with a head part, the rear portion of the drill is provided with a connecting rod part, the front portion of the rod stabilizer is provided with a connecting hole sleeving the outer side of the connecting rod part, and the connecting hole and the connecting rod part are in threaded connection with each other. The rod stabilizer is internally provided with anaxial through hole which is through front and back, the rear side inside the drill is provided with a blind hole which is flush with the axial through hole and communicates with the axial through hole, flow dividing holes extending to the drilling face of the head part are formed in the bottom of the blind hole, the rear portion of the connecting rod part is provided with a flow guiding channel extending in the radial direction, the inner end of the flow guiding channel communicates with a hole space of the axial through hole or a hole space of the blind hole, and the outer end of the flow guiding channel extends to a gap between the outer side wall of the rear portion of the connecting rod part and the hole wall at the rear portion of the connecting hole. Cooling gas of the flow guidingchannel is guided out to a threaded connecting portion to cool the threaded connecting portion, so that the problem that the temperature at the threaded connecting portion is high is solved.
Description
technical field [0001] The invention relates to the technical field of tools and instruments, and more specifically, relates to an eccentric drilling tool. Background technique [0002] The percussion drill bit is widely used in ore detection, underground rock sample collection, construction engineering, hydropower, ports, high-speed roads and urban construction projects in the early rock sample detection of a series of engineering projects. At the same time, the dust is collected to avoid environmental Pollution, has very good environmental protection effect. The drill bit is composed of a drill body and alloy teeth. The drill bit transmits the impact stress wave transmitted by the impactor or the power head to the alloy teeth through the drill body, and the alloy teeth crush the rock for rock breaking. [0003] There is an eccentric drilling tool in the percussion drill. The eccentric drilling tool mainly includes a drill bit, an eccentric reaming sleeve and a rod stabili...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E21B7/28E21B17/043E21B17/10
CPCE21B7/28E21B17/043E21B17/10
Inventor 杨日平陈真杨湘龙
Owner CHANGSHA HEIJINGANG IND CO LTD