A kind of centrifugal block and pipe drilling tool and its assembly method
A technology of following pipe drilling tools and centrifugal throwing blocks, applied in drill bits, drilling equipment, earth-moving drilling, etc., can solve the problems of low reliability, excessive clearance, low work efficiency, etc.
Active Publication Date: 2015-12-30
广汉珂普瑞科技有限公司
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Problems solved by technology
Since the center drill bit and the reaming drill bit are connected to the connector by the transmission pin, the transmission pin bears all the torque force, so the deformation of the transmission pin is large, and the gap between the components is too large, the structure is more complicated, and the work efficiency is low. , and the reliability is not high
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[0038] The centrifugal throwing block and pipe drilling tool of the present invention, its components are assembled and disassembled and the schematic diagram after the assembly is completed is as follows figure 1 and figure 2 As shown, the centrifugal block-following drilling tool is composed of a reaming drill piece 1, a connector 2 and a central shaft 3. Compared with the traditional drilling tool, the center drill bit is eliminated.
[0039] The structure of the reaming drill 1 is shown as image 3 and Figure 4 As shown, the bottom surface of the reaming drill piece 1 is provided with a connecting shaft 4, and the connecting shaft 4 is provided with a locking convex key 5. The end face of the reaming drill piece 1 is a working surface, and a cemented carbide head 8 is arranged on the working surface; The structure of the above-mentioned connector 2 is shown as Figure 7As shown, the connector 2 is provided with a central shaft assembly hole 9 and a drill piece assembl...
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The invention discloses a casing drilling tool, particularly relates to a centrifugal flail block casing drilling tool and belongs to the technical field of drilling tools. The centrifugal flail block drilling tool is composed of a reaming drilling piece, a connector and a central shaft. A connecting shaft is arranged on the bottom surface of the reaming drilling piece, the connector is axially provided with a central shaft assembly hole and a drilling piece assembly hole, and the central shaft is used for assembly and connection between the reaming drilling piece and the connector. Assembly and connection among the reaming drilling piece, the connector and the central shaft are redesigned, compared with a traditional casing drilling tool, a central drill bit is omitted, the whole end face of the reaming drilling piece creatively serves as a working face, and through an improvement of the assembly structure of the drilling tool, the centrifugal flail block casing drilling tool has the advantages of effectively dispersing torque in the drilling construction and being high in working efficiency, simple in structure, high in reliability and excellent in mechanical strength; in addition, the assembly process of the drilling tool is simple and rapid, and production efficiency is high.
Description
technical field [0001] The invention relates to a pipe follower drilling tool, in particular to a centrifugal throwing block follow pipe drill, which belongs to the technical field of drilling tools. Background technique [0002] In building construction, follow-up drilling is a new drilling technology developed on the basis of down-the-hole drilling technology. Successfully drilled and formed holes effectively, and the concentricity of the holes is high. [0003] In the follow-up drilling construction, the follow-up drill is used to drill. The existing similar follow-up drill is mainly composed of four parts: a center drill bit, a reaming drill piece, a drive pin and a connector. Since the center drill bit and the reaming drill bit are connected to the connector by the transmission pin, the transmission pin bears all the torque force, so the deformation of the transmission pin is large, and the gap between the components is too large, the structure is more complicated, and...
Claims
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IPC IPC(8): E21B10/26E21B10/46
Inventor 马勇曾德明
Owner 广汉珂普瑞科技有限公司