JPH08143921A - Hole opening machine for iron tapping hole of blast furnace - Google Patents

Abstract

PURPOSE: To provide a hole opening machine which can finely adjust the tip part of a drilling tool in the vertical direction to the center of an iron tapping hole of a blast furnace. CONSTITUTION: A guide cell 9 is hung down and an engaging pin 30 of a link 35 is hung to a hook receiving metal 21. In this condition, a driving means 41 is worked to rotate a screw shaft 40, and at the time of vertically shifting a nut block, the center part of the link 35 is turned to the upper part while using the hook receiving metal 21 as the supporting point. By this method, the guide cell 9 is vertically moved through a fitting base 32 and a columnar member 31. Further, the tip part of the drilling tool 18 can vertically and finely be adjusted to the iron tapping hole and the drilling reaction can be received by this machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tap hole punching machine capable of finely adjusting the tip of a drilling tool in the vertical direction with respect to the tap hole center of a blast furnace.

[0002]

2. Description of the Related Art A tap hole opening machine is a machine for opening a tap hole closed by a tap hole closing member (mud), which holds a boring tool (rod) and is used as a boring tool. After the completion of drilling, the drilling tool is punched, and after the drilling is completed, the drilling tool is reversely hit, rotated, and fed backward to pull out the drilling tool to open the taphole.

A conventional taphole opening machine will be described with reference to the drawings. FIG. 5 is a side view of a conventional tap hole punching machine, FIG. 6 is a top view thereof, and FIG. 7 is a top view of a swing boom supporting the guide cell support. In FIG. 7, the revolving boom 1 has one end rotatably attached to a post 4 erected on a casting floor, and is revolved by a revolving device 3. The link rod 2 has one end rotatably attached to the post 4 with a space provided between the link rod 2 and the attachment portion of the swing boom 1. The other ends of the revolving boom 1 and the link rod 2 are pivotally attached to shafts protruding from the upper surface of the guide cell support 6 at intervals to suspend and support the guide cell support 6.

A bracket 7 is vertically provided on the lower surface of the guide cell support 6 below the swing boom supporting position. On the other hand, the bracket 8 is provided on the upper surface on the rear end side of the guide cell 9. The guide cell 9 is supported by the guide cell support 6 so as to be vertically rotatable by connecting the brackets 7 and 8 via a shaft. A wire sheave 10 is provided on a substantially central upper surface of the guide cell 9, and a wire sheave 11 is attached to a tip of the guide cell support 6 located right above the wire sheave 10. An air hoist 12 is provided on the rear end side of the guide cell support 6. A wire 13 is wound around the wire sheaves 10 and 11 from the air hoist 12 via another wire sheave provided on the guide cell support 6. Then, take up the air hoist 12,
Alternatively, by rewinding, the tip of the guide cell 9 is rotated upward or downward with the connecting shaft of the brackets 7 and 8 as a fulcrum.

The drilling machine 16 and the drilling tool receiver 14 are
It is suspended below the guide cell 9 so as to be movable in its length direction. The drilling machine 16 can be moved forward and backward along the guide cell via the chain wheel and the chain by the chain feed motor 17 provided on the guide cell (rear end side). At the tip of the guide cell, a fixed-position drilling tool receiver is attached rotatably in a plane orthogonal to the length direction of the guide cell. The drilling tool 18 is held by the drilling machine 16 and the drilling tool receiving hardware 14, 15.

A hacker 19 is provided on the guide cell at an intermediate position between the tip of the guide cell 9 and the wire sheave 10. The hacker 19 has an engagement pin 20 at its tip, and when the tap hole is opened, the hacker receiving member 21 fixedly provided above the tap hole is engaged with the engagement pin 20. Is. As a result, the hacker 19 suspends and supports the guide cell 9, and also serves to receive the hole-drilling reaction force. In addition, a hook 23 and an air cylinder 24 for operating the hook 23 are provided on the lower end of the guide cell support 6.
Is provided, and the wire sheave 10 of the guide cell 9 is provided.
An engagement pin 22 is provided near the. When the perforator is moved to the retracted position, the air hoist 12 lifts the guide cell 9 to the horizontal position, and the air cylinder 24 is operated to hook the hook 23 on the engagement pin 22. This is to prevent the guide cell 9 from descending should the wire 13 for lifting the guide cell break. The tapping hole opening machine is configured as described above, and when the tapping hole is not opened, the swing boom 1 is swung to the retracted position. When opening, the swing boom 1 is swung to the opening position, the hook 23 is removed, the air hoist 12 is wound down, and the hacker 19 is engaged with the hacker receiving metal member 21 to open the taphole. It is carried out.

[0007]

When opening the taphole, it is necessary to align the tip of the drilling tool 18 with the center of the taphole. The center position of the taphole moves slightly in the vertical and horizontal directions as the operation progresses. However, in the above boring machine, since the length of the link rod 2 can be adjusted by the turnbuckle 5 provided on the link rod 2, the tip of the boring tool 18 can be finely adjusted in the left-right direction. Fine adjustment in the vertical direction is not possible. As a tool for adjusting the tip of the boring tool in the vertical and horizontal directions,
Although the device of Japanese Patent No. 22353 has been proposed, this hole punching machine is provided with an arm swinging forward and backward of a hoisting frame (corresponding to the guide cell support 6), and the guide cell is hung and supported by these arms. However, the structure is different from that of the perforator targeted by the present invention, and the present invention cannot be applied to the perforator described above.

The present invention has been made in order to solve the above-mentioned problems, and even in a hole drilling machine of the type described in the section of the prior art, the tip of the drilling tool can be adjusted vertically. An object is to provide a punching machine.

[0009]

The present invention solves the above problems by
The problem is solved by the following device.

The first device is a guide cell for supporting the main body of a tapping hole punching machine for striking and rotating the punching tool held at the tip to open the tapping hole, and a guide cell. A guide cell support having a support means located above the guide cell and rotatably supporting a rear end side far from the tap hole of the guide cell, and a means for suspending a substantially central portion of the guide cell so that the guide cell can be raised and lowered. In a blast furnace taphole opening machine having an engaging pin that is provided on the blast furnace body side and that engages with a hacker receiving metal object to fix the guide cell, the engaging pin is moved up and down with respect to the guide cell. It is a blast furnace tap hole opening machine characterized by being provided with a mechanism for adjusting the position.

The second device is the same as the first device.
A mechanism for adjusting the vertical position of the engagement pin with respect to the guide cell includes a support member that is erected on the guide cell, a link whose central portion is rotatably supported by the support member, and a screw / nut attached to the support member. A mechanism and a screw / nut mechanism driving means, wherein one end of the link is provided with an engaging pin attachment portion, and the other end of the link is driven by the screw nut mechanism. It is a blast furnace tap hole opening machine.

[0012]

[Action]

After the "first device" engagement pin is hung on the hacker receiving member, the tip of the guide cell can be adjusted in the vertical direction by operating the mechanism that adjusts the vertical position of the engagement pin. Further, a hole-drilling reaction force can be received by a mechanism that adjusts the vertical position of the engagement pin. "Second device" After the engaging pin provided at one end of the link is hooked on the hacker receiving member, the screw shaft is rotated by the screw / nut mechanism driving means and the nut block is moved to rotate the link. That is, the center part of the link rotates up and down with the hacker receiving hardware as a fulcrum. As a result, the guide cell moves up and down with respect to the hacker receiving object, so that the tip of the guide cell can be adjusted in the vertical direction.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an embodiment of the device of the present invention attached to a guide cell, FIG. 2 is an enlarged side view showing an embodiment of the device of the present invention, and FIG. Figure, Figure 4
[Fig. 3] is a view taken along the line BB of Fig. 2. In the following examples, the swing boom, the swing device, the post, the link rod, the guide cell support, the wire sheave, the bracket, the guide cell, etc. are the same as those in the prior art, and therefore the description thereof is omitted and the main part of the present invention is omitted. Only a mechanism for vertically adjusting the tip of a certain guide cell will be described.

As shown in FIG. 1, a centering adjusting device 30 for a tap hole opening machine according to an embodiment is a guide cell between a tip of a guide cell 9 and a mounting position of a wire sheave 10 provided at the center of the guide cell. It is mounted on top (the hacker mounting position of the conventional drilling machine). The centering adjustment device 30 includes a pillar member 31 standing on a guide cell, a mounting base 32 mounted on the upper portion of the pillar member 31, and a link 35 having a central portion rotatably mounted on an upper protruding portion of the mounting base 32. And a screw shaft 40 screwed into the nut block attached to the link 35.
And a drive means 41 for rotationally driving the screw shaft 40,
The driving means mounting base 33 is rotatably mounted on the laterally extending portion of the mounting base 32. Pillar member 31
And the mounting base 32 correspond to a supporting member, and the centering adjustment device 3
0 corresponds to a mechanism for adjusting the vertical position of the engagement pin.

In FIG. 2, a column member 31 is a wire sheave 10 provided at the tip of the guide cell 9 and the center of the guide cell.
Are erected on the guide cell between the mounting positions of. A mounting base 32 is mounted on the top of the pillar member 31 by a plurality of bolts. The upper part of the mounting base 32 projects upward from the upper end of the column member 31, and the lower part projects laterally from the side of the column member 31 to the rear end side of the guide cell. As shown in FIG. 4, the mount 33 of the rotary drive means has shafts 34, 34 that project laterally from both side surfaces thereof. The shafts 34, 34 are rotatably fitted to the laterally projecting portion of the mounting base 32. That is, the mount 33 of the rotary drive means is rotatably mounted on the mount 32 via the shafts 34, 34.

As shown in FIG. 3, at one end of the link 35,
An engagement pin 36 that engages with the hacker receiving hardware 21 is fixed. The nut block 37 has shafts 38, 38 provided on both side surfaces thereof so as to project therefrom.
Reference numerals 8 and 38 are rotatably fitted to the other end of the link 35. That is, the nut block 37 is rotatably attached to the other end of the link 35 via the shaft 38. Link 3
The central portion of 5 and the upper protruding portion of the mounting base 32 are rotatably connected by a shaft 39.

A shaft portion below the screw shaft 40 is rotatably supported on an upper portion of a mount 33 of the rotation driving means.
Then, the threaded portion on the upper part of the screw shaft 40 is screwed into the threaded hole of the nut block 37 to penetrate therethrough. The rotation drive means 41 is attached to the lower surface of the mount 33 of the rotation drive means. An air motor or an electric motor is used as the rotation driving means 41. The output shaft of the rotation driving means 41 is connected to the shaft portion of the screw shaft 40 via a rotary joint 42. That is, the rotation driving means 41 rotationally drives the screw shaft 40 via the rotary joint 42.

The centering of the tip of the boring tool (rod) with the center of the tap hole by the centering adjusting device of the present invention is performed as follows. The configuration other than the centering adjustment device is shown in FIGS.
The configuration is the same as that of. The swivel boom 1 is swung from the retracted position to the hole position of the tap hole to be opened. The air cylinder 24 is operated to disengage the hook 23 from the engagement pin 22, and the air hoist 12 is operated to suspend the guide cell 9 and hang the engagement pin 36 of the link 35 on the hacker receiving member 21. Operates the chain feed motor 17 to drive the drilling machine 16
To move forward and stop the tip of the drilling tool near the tap hole. "When the tip of the drilling tool is displaced below the center of the tap hole" The driving means 41 is operated to rotate the screw shaft 40 to move the nut block 37 upward. Link 3
The central portion of 5 rotates upward with the hacker receiving metal 21 as a fulcrum. As a result, the guide cell 9 rises via the mount 32 and the pillar member 31. The tip of the drilling tool 18 pivots upward with the connecting shaft of the brackets 7 and 8 as a fulcrum and rises. The screw shaft 40 is rotated until the tip of the drilling tool 18 coincides with the center of the tap hole.

"When the tip of the boring tool is displaced above the center of the tap hole" The air hoist 12 is wound down and the wire 1
Place 3 loosely. The screw shaft 40 is rotated in the opposite direction to move the nut block 37 downward. The central portion of the link 35 rotates downward with the hacker receiving member 21 as a fulcrum. As a result, the guide cell 9 is attached to the mounting base 32.
And descends via the pillar member 31. The tip of the drilling tool 18 pivots downward with the connecting shaft of the brackets 7 and 8 as a fulcrum and descends. The screw shaft 40 is rotated until the tip of the drilling tool 18 coincides with the center of the tap hole.

The centering adjusting device of the hole making machine of the above-described embodiment can be finely adjusted such as a stepping cylinder having an engaging portion at the tip on the front end side upper surface close to the tap hole of the guide cell. It is also possible to attach various expansion and contraction means.

[0021]

According to the apparatus of the present invention, the rear of the guide cell is rotatably suspended and supported by the guide cell support, and the center of the guide cell is suspended by the wire. The tip of the tool can be finely adjusted in the vertical direction. Further, this device can also receive a hole drilling reaction force.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the device of the present invention attached to a guide cell.

FIG. 2 is an enlarged side view showing an embodiment of the device of the present invention.

FIG. 3 is a view as viewed in the direction of arrows AA in FIG. 2;

FIG. 4 is a view taken along the line BB of FIG.

FIG. 5 is a side view of a conventional taphole opening machine.

FIG. 6 is a plan view of a conventional taphole opening machine.

FIG. 7 is a plan view of a swing boom of a conventional taphole opening machine.

[Explanation of symbols]

 1 Swing Boom 2 Link Rod 6 Guide Cell Support 7 Bracket 8 Bracket 9 Guide Cell 10 Wire Sheave 11 Wire Sheave 12 Air Hoist 16 Drilling Machine 18 Drilling Tool 30 Centering Adjustment Device 31 Column Member 32 Mounting Base 33 Mounting of Rotation Driving Means Stand 35 Link 36 Pin 37 Nut Block 40 Screw Shaft 41 Rotation Drive Means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Osamu Uchiyama 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Pipe Co., Ltd.

Claims (2)

[Claims] 1. A guide cell for supporting a boring machine body, which is capable of moving forward and backward, by striking and rotating a boring tool held at the tip to open the tapping hole, and a position above the guide cell. And a guide cell support having a supporting means for rotatably supporting the rear end side of the guide cell far from the tap hole and a means for suspending a substantially central portion of the guide cell so that the guide cell can be raised and lowered, , In a blast furnace tap hole opening machine having an engaging pin for engaging a hacker receiving member provided on the blast furnace furnace body side and fixing the guide cell, adjusting the vertical position of the engaging pin with respect to the guide cell A blast furnace tap hole opening machine characterized by having a mechanism. 2. A mechanism for adjusting the vertical position of an engagement pin with respect to a guide cell according to claim 1, a support member erected on the guide cell, and a link having a central portion rotatably supported by the support member. It has a screw / nut mechanism attached to a supporting member and a screw / nut mechanism driving means, an engaging pin attachment portion is provided at one end of the link, and the other end of the link is driven by the screw nut mechanism. A blast furnace tap hole opening machine characterized by being used.