CS224633B2 - Drilling machine for tap holes - Google Patents

Abstract

A baseplate is provided with a horizontalp pivot shaft on which a bearing block ancan be tilted in a vertical plane; and the bearing block forms a pivot axis for a jib. On the free end of the jib is another pivot mounting for a holder carrying a boring tool. The result is that the jib can be swivelled in both horizontal and vertical planes. Two work cylinders are pref. used to swivel the bearing block and the jib. In one pref. design, the bearing block is located on a cardan mounting. In another pref. design, the boring machine is located by its bearing block on the same foundation as a mud gun employed to block tapholes. The taphole boring machine can be used on many types of shaft furnace, and has a wide range of movement so the boring tool can be correctly aligned with a taphole; the machine can also be comined with a mud also be combined with a mud gun.

Description

The invention relates to a tap hole drilling machine for shaft furnaces, in particular. a blast furnace, with a carriage carrying the drilling tool and its drive, which is mounted on the free end of the boom located at the end, away from the. carriages Turned sideways in the bearing component.

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A tap hole drill is known which can be rotated upwards to a rest position about a horizontal axis vertically from a furnace casting groove, in particular a blast furnace. The horizontal axis of rotation is arranged in a fixed vertical column. However, turning the machine upwards is not always possible in all cases, since there is not enough space to do this. In addition, this rest position is not suitable for repair and maintenance of the drill.

A tap hole drilling machine is also known which pivots sideways on a vertical column to a rest position. · To do this, however, the carriage with the drilling tools must first be lifted out of the furnace groove, which requires a separate drive train. This known machine is equipped with a paralelogreo. replacement bars.

Since the tap hole, especially in a blast furnace, is usually drilled at an oblique angle downwards, Hyl has already used this oblique drilling direction when dialing the drill to the tap hole from the groove and moreover The sides are first turned to the horizontal position.

Also known are arrangements in which the tap hole plugging device and tap hole drill are arranged on the same side of the groove, which devices can be pivoted about oblique axes above each other.

These known embodiments have the disadvantage that the arrangement is intended only for a particular application. This applies in particular to the inclined alignment of the columns around which the respective booms are pivoted.

It is an object of the present invention to provide a tap hole drill that can be adapted to numerous applications without structural changes, also in combination with a tap hole plugging device.

The above mentioned drawbacks are eliminated by a tap hole drilling machine for a shaft furnace, with a carriage carrying the drilling tool and its drive, which is fixed at the free end of the boom mounted on the end facing away from the carriage laterally rotatable in the bearing element the bearing member is adjustable about a substantially horizontal tilting axis by a tilting cylinder to adjust the boom tilt angle.

According to a further embodiment of the invention, the pivot axis of the bearing member and thus also the displacement plane of the rotary axis is adjustable in any position relative to the horizontal and vertical reference planes. In this case, the bearing element with its tilting axis can be arranged on the bracket and on the free end of the shaft clamped by one side on the furnace support.

In addition, the bearing member can be arranged at the free end of the shaft clamped in the inclined rotating column of the tap hole plugging device.

In a preferred design, the bearing member for determining the pivot axis of the boom can be arranged on a ball joint with two tilting cylinders.

Instead of a ball joint, a cardan or cross joint may also be provided.

The solution according to the invention thus makes it possible to vary the tilt angle of the pivot axis so that the tapping hole drills can be adapted to the local conditions without special design, i.e. the same construction is suitable for different applications, with particular reference to the fact that the inclined surface the axes can also be adjusted during the rotary movement, so that in many cases the drill can also quickly adapt to sudden changes in spatial conditions.

The essence of the tapping hole drill according to the invention is explained in more detail in the exemplary embodiments indicated in the drawings, wherein Fig. 1 is a schematic side view of a first exemplary embodiment of a drill; Fig. 2 is a top view of Fig. 1; Fig. 4 a top view of Fig. 3, Fig. 5 a schematic side view of a third exemplary drill and Fig. 6 a top view of Fig. 5.

The tapping hole drill is provided with a boom J, at the free end of which a carriage 2 is rotatably mounted. This carriage 2 carries a drill with a corresponding feed drive. In the drawing, part of the drill bar J is always apparent from the respective top views.

The boom J is at the end facing away from the carriage 2 rotatably mounted about a pivot axis 4 in a bearing member which can be tilted around the horizontal axis 6 by means of a tilting cylinder 7 which acts on the arm 8 of the bearing member 2 so that can be adjusted.

Referring to Figures 1 and 2, the bearing member 5 is supported on a bracket 5 which is fastened to an unmarked base.

When the tap hole drill from the blast furnace or other furnace trough area has been turned to the rest position (indicated by dashed lines in FIG. 2), the carriage 2 at the free end of the boom 2 is rotated by the control bar 10 about the axis I1. relative to the boom 11. The axis 11 lies in the same planes ^{in the} pivot axis 4 of the boom 8, which is pivoted by means of a pressure cylinder 12.

The embodiment according to FIGS. 3 and 4 differs from the first exemplary embodiment only in that the horizontal tilt axis 6 is associated with a shaft 13 which is fixed on one wall in the furnace support 14 and at the other end a bearing member 6 of the boom 11 is arranged. 13, the inclination angle alpha of the boom pivot axis 4 can be rotatably adjusted by the tilting cylinder 2.

A similar arrangement is apparent from FIGS. 5 and 6. In this embodiment, the shaft 13 * has a horizontal axis. Tilt 6 mounted in a silent column 15 of the tapping hole blocking device 16. The shaft 13 'is rotatably adjustable by the arm 8 to adjust the inclination angle α of the pivot axis 4 of the boom.

Another not indicated embodiment allows the alpha tilt angle to be moved to any position. The explanation of such an embodiment can be referred to from the exemplary embodiment of FIGS. 1 and 2. In this connection, the joint for the horizontal tilt axis 6 can be replaced by a ball joint or a cardiac or cross joint. In this embodiment, however, it would be necessary to adjust and support two mutually perpendicular tilting cylinders similar to the tilting cylinder 2. • The tilting axis can, in its fixed position, extend freely with respect to the horizontal and vertical reference planes, as indicated 6 or axis 6, so that the rotary axis 4 for the lining 2 will assume the respective positions of the axis 4.4 **.

In all exemplary embodiments, the pivoting and tilting movements about the axes 4 Á Á could be automatically coordinated according to the spatial conditions according to the programmed valve control for the tilting cylinder 2 and the pressure cylinder 12 in such a way that no part of the furnace device or a tapping hole plugging device arranged on the same foundation.

Claims (7)

A tap hole drilling machine for shaft furnaces, in particular blast furnaces, with a carriage carrying a drilling tool and a drive thereof, which is mounted on a free end of a boom mounted at a side facing away from the carriage laterally rotatable in a bearing beam, the bearing member (5) is adjustable about a substantially horizontal tilt axis (6) by a tilting roller (7) to adjust the boom tilt angle (alpha) (1). A tapping drill according to claim 1, characterized in that the tilting axis (6 *, 6 * '') is adjustable in any position relative to the horizontal and vertical reference planes. Tap hole drilling machine according to Claims 1 and 2, characterized in that the bearing member (5) is arranged on its bracket (9) with its tilting axis (6). . A tapping drill according to Claims 1 and 2, characterized in that the bearing member (5) is arranged at the free end of the shaft (13) clamped on one side on the furnace support (14). A tapping drill according to Claims 1 and 2, characterized in that the bearing member (5) is arranged at the free end of the shaft (13 *) clamped in the stub (15) of the tapping device (16). Tap hole drilling machine according to claim 1, characterized in that the bearing member (5) is arranged on a ball joint, with two tilting rollers (7). The tapping drill according to claim 1, characterized in that the bearing member (5) supported by two tilting cylinders (7) is arranged on the universal joint.