Novel shortcut drill bush and assembling method thereof

Abstract

The invention discloses a novel quick drill bushing and an assembly method thereof. A first seal ring and a second seal ring are placed in an annular groove at the periphery of the drill bushing, a gear sleeve clamping ring is arranged at the middle section of a hollow drill rod, and a nut gear sleeve thread is assembled at a thread section of the hollow drill rod and is meshed with the gear sleeve clamping ring. A wing plate is opposite to a mounting notch on a lock nut, the hollow drill rod, the nut gear sleeve and the gear sleeve clamping ring are sheathed in a centre hole of a drill bushing body, and a handle is held to rotate the lock nut to cause the gear sleeve clamping ring and the nut gear sleeve to drive the hollow drill rod to be in synchronous motion, thus causing a conical section or a circular section of the hollow drill rod to form compact conical surface contact or spherical surface contact with a cavity wall of the drill bushing body. The novel rapid drill bushing has the advantages of compact structure, good sealing performance, and extremely convenient and quick assembly and disassembly; and the novel rapid drill bushing can be applicable to a blast furnace taphole drill and can be taken as an accessory of a drill used in the mining of a metal mine or a non-metal mine.

Description

technical field The invention relates to a drill bushing and its assembly method, in particular to a new type of fast drill bushing and its assembly method which are used in metallurgical blast furnaces to open the blast furnace taphole and matched with drilling rigs. This new type of fast drill bushing can also be used as a metal Matching parts for drilling rigs in mining or non-metallic mining. Background technique In iron and steel metallurgical joint enterprises, the blast furnace needs to provide high-quality molten iron for the steelmaking process. When the molten iron in the blast furnace reaches a certain level, the blast furnace taphole must be opened to flow the molten iron through the iron gutter to the molten iron tank and then blended into the mixing furnace or directly. It is sent to the converter steelmaking furnace or mixed into the electric furnace steelmaking furnace. In order to open the blast furnace taphole, the iron hole drilling machine is usually used...

AI Technical Summary

Problems solved by technology

The structure of the drill sleeve used before the present invention is not reasonable, the center hole of the drill sleeve connected with the drilling rig has no sealing device after the drill pipe is placed, and there is only one pin opening to set the drill pipe in the drill sleeve through the pin shaft, and the outside dust It is easy to enter the center hole of the drill sleeve, which will affect the sealing effect, cause great wear and tear, cause loosening after long-term use, low work efficiency, and poor iron opening effect

In addition, the drill pipe and the drill sleeve are fastened with screws, the assembly method is unreasonable, and the assembly and disassembly are also extremely inconvenient, which affects the operation rate of the drilling rig