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KR-20260063421-A - Taphole drilling machine

KR20260063421AKR 20260063421 AKR20260063421 AKR 20260063421AKR-20260063421-A

Abstract

The present invention relates to a device for drilling tap holes in the walls of a blast furnace, comprising a main body having a support installed spaced apart from the blast furnace and a support frame installed on the upper part of the support; a movable body slidably coupled to the support frame to approach and space apart from the blast furnace; a rotating body installed on the movable body so as to rotate transversely with respect to the longitudinal direction of the support frame; and a lancing tool installed on the rotating body to supply and transport a lancing pipe toward the walls of the blast furnace.

Inventors

  • 윤환규
  • 박재홍

Assignees

  • 국도정밀(주)

Dates

Publication Date
20260507
Application Date
20241030

Claims (5)

  1. In a device for drilling tap holes in the walls of a blast furnace, A main body having a support installed spaced apart from the blast furnace and a support frame installed on the upper part of the support; A movable body slidably coupled to the support frame to approach and move away from the furnace; A rotating body installed on the movable body so as to be rotatable in the transverse direction with respect to the longitudinal direction of the support frame; and, A tap hole drilling device comprising: a lancing tool installed on the rotating body and supplying and conveying a lancing pipe toward the wall of the furnace.
  2. In claim 1, A tap hole drilling device comprising: a tool protection frame having a space inside and coupled to the tip of the lancing tool; and a lancing tool protection frame having an insulating material filled inside the tool protection frame.
  3. In claim 1, A tap hole drilling device characterized by having a protective plate installed at the other end of the above-mentioned lancing tool to protect the operator.
  4. In claim 1, A tap hole drilling device characterized by comprising: a housing coupled to the rotating body and having a lancing pipe supply path formed therein for supplying and transporting the lancing pipe; a plurality of supply rollers installed inside the housing to move the lancing pipe along the lancing pipe supply path; and a supply roller driving unit for driving the supply rollers.
  5. In claim 4, The above housing is a tap hole drilling device further comprising a lancing pipe detection sensor that detects when the lancing pipe is inserted into the lancing pipe supply path.

Description

Taphole drilling machine The present invention relates to a tap hole drilling device. Taphole drilling devices are used to open the melt canal by drilling a hole in the wall of a blast furnace. The tap hole drilling device is equipped with a frame having a drilling and firing mechanism. The drilling and firing mechanism is equipped with a drill rod mounting for connecting to a drill rod having a length of several meters. The frame is formed in a carriage manner and is mounted so as to be rotatable or pivotable to move in front of the tap hole of the furnace to the position where drilling is required. To drill the hole, the frame is firmly fixed to the front of the furnace by a fixing device. Therefore, a relatively large feeding force is utilized through the drill rod during the drilling process. During the drilling process, the drilling and firing mechanism induces continuous firing impacts in a hammer drill manner, along with the rotation of the drill rod. Since the feeding of the drill rod is generated by the feeding motion of the drilling and firing mechanism along the longitudinal direction of the frame, the drill rod can continuously penetrate deeper into the walls of the furnace. As the drill rod can be several meters long, it is necessary to keep the drill rod loose at the front of the frame. For this purpose, various devices are known in the industry that are formed in such a way that the drill rod can be easily replaced and that the drill rod is guided and ensured to rotate and feed without external interference under all circumstances. FIG. 1 is a perspective view of a tap hole drilling device according to an embodiment of the present invention. FIG. 2 is a schematic perspective view illustrating a lancing tool according to an embodiment of the present invention. FIG. 3 is an operating state diagram of a tap hole drilling device according to an embodiment of the present invention. Hereinafter, a tap hole drilling device according to an embodiment of the present invention will be described in detail with reference to the attached drawings. Referring to FIGS. 1 to 3, a tap hole drilling device (100) according to an embodiment is used to open a melt canal by drilling a hole in the wall of a blast furnace. This tap hole drilling device (100) has a main body (110), a moving body (120), a rotating body (130), and a lancing tool (140). The main body (110) has a support (112) installed spaced apart from the furnace and a support frame (114) installed on the upper part of the support (112). The movable body (120) is slidably connected to the support frame (114) so as to approach and move away from the furnace. The rotating body (130) is installed on the movable body (120) so as to be rotatable in the horizontal direction relative to the longitudinal direction of the support frame (114). As the rotating body (130) is rotatably coupled to the moving body (120), the lancing tool (140) can be separated from the furnace when the worker performs the task of inserting the lancing pipe into the lancing tool (140), so that the worker can safely insert the lancing pipe (not shown) into the lancing tool (140). The lancing tool (140) is installed on the rotating body (130) and feeds and transports the lancing pipe toward the wall of the furnace. The lancing tool (140) is coupled to a rotating body (130) and has a housing (142) having a lancing pipe supply path (144) formed therein to supply and transport a lancing pipe, a plurality of supply rollers (146) installed inside the housing (142) to move the lancing pipe along the lancing pipe supply path (144), and a supply roller drive unit (148) to drive the supply rollers (146). The housing (142) has a lancing pipe detection sensor (149) that detects when a lancing pipe is inserted into a lancing pipe supply channel (144). A lancing pipe supply tip (145) is installed on the opposite side of the housing (142) where the lancing pipe detection sensor (149) is installed. A plurality of supply rollers (146) are arranged to face each other within the housing (142) with the lancing pipe supply path (144) in between, and the supply rollers (146) arranged to face each other are moved to approach and separate from each other through a driving unit. Additionally, the lancing tool (140) further includes a tool protection frame (152a) that is coupled to the tip of the lancing tool (140) and has a space inside, and a lancing tool protection frame (152) that has an insulating material (152b) filled inside the tool protection frame (152a). The lancing tool protection frame (152) prevents the lancing tool (140) from being damaged by the sparks generated when drilling the tap hole of the furnace and the molten metal discharged from the furnace. A protective plate (154) is installed at the other end of the lancing tool (140) to protect the worker. The protective plate (154) protects the worker from sparks generated during tap hole drilling in the furnace and from molten metal discharged f