Underground coal mine deep hole compound type diameter expanding cave making device
A composite, deep-hole technology, applied in drilling equipment, drilling equipment and methods, drilling with liquid/gas jets, etc., can solve problems such as uneven hole size, inability to transmit power, complex transmission structure, etc., to achieve transmission The effect of direct and fast efficiency, stable gear transmission structure, and simplified transmission components
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[0044] Example 1
[0045] like Figure 1-3 As shown in the figure, an underground deep hole compound type expanding hole making device is arranged between a drill pipe and a drill bit, and includes a rod body 1 with a central through hole 2, and the head end and the tail end of the rod body 1 are respectively provided with male The head 9 and the female head 10, the male head 9 is used to connect the drill bit, the female head 10 is used to connect with the drill rod, the circumferential wall of the rod body 1 is evenly provided with a plurality of assembly holes 3 that pass through the central through hole 2, and the assembly The hole 3 is arranged along the length direction of the rod body 1, and the assembly hole 3 is a through hole with a rectangular structure. The assembly hole 3 is provided with a diameter-expanding drill wing 4 that can be flipped and opened relative to the rod body. The size is matched with the shape and size of the assembly hole 3. After the expandin...
Example Embodiment
[0049] Example 2
[0050] This embodiment is an improvement on the basis of Embodiment 1, and its main structure is the same as that of Embodiment 1. The difference is: Image 6 As shown, the expanding drill wing 4 includes three parts that are integrally connected, namely a cylindrical end 42 for connection, a rectangular wing rod 43 as the main body, and a trapezoidal cutting seat 44 for cutting, and the expanding drill wing 4 works In this state, the coal seam wall needs to be cut, and it also needs to carry the high torque caused by the high-speed rotation of the drill pipe and the coal seam wall cutting, and its own strength and hardness need to be large enough. The basic guarantee is that the rotating teeth 41 are evenly arranged on the circumferential wall of the cylindrical end 42. At the same time, the cylindrical end 42 as the connecting end also needs sufficient connection strength, so the main structure of the cylinder is adopted, and the center of the cylindrical ...
Example Embodiment
[0051] Example 3
[0052] This embodiment is an improvement on the basis of Embodiment 2, and its main structure is the same as that of Embodiment 2, except that the thickness of the trapezoidal cutting seat 44 is smaller than the thickness of the rectangular wing bar 43, so that the trapezoidal cutting seat 44 and the A stepped gap A47 is formed before the rectangular wing bar 43, and the gap A47 is located on the back of the cutting alloy block 46. The end of the trapezoidal cutting seat 44 located on the same side of the cutting alloy block 46 is provided with a stepped structure gap B48. The gap A47 and The notch B48 is equipped with an alloy cutting blade 49 with a suitable shape. On the two side walls of the trapezoidal cutting seat 44, in addition to one side wall has been equipped with the cutting alloy block 46, the other side wall is also equipped with a whole body. The block alloy cutting blade 49 makes the two side walls of the trapezoidal cutting seat 44 have cutt...
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