JP3603181B2 - Repair equipment for coke oven wall - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a coke oven wall repair apparatus, and more particularly to a lance head rotating mechanism at a lance tip.
[0002]
[Prior art]
A repair device for repairing the furnace wall of a coke oven is disclosed, for example, in Japanese Patent Publication No. 57-47944 and Japanese Patent Application Laid-Open No. Hei 7-126637. Generally, a multi-stage telescopic lance device is used, and a lance tip is provided. The spray nozzle provided is repaired by spraying a spray material toward the damaged part of the furnace wall.
In order to change the direction of the nozzle, a rotation mechanism such as a worm and a worm wheel is provided on a base tube (or a fixed outer cylinder) that supports the lance in a telescopic manner, and the rotation mechanism rotates the base tube to change the nozzle direction. Has changed.
[0003]
[Problems to be solved by the invention]
However, cables and hoses are drawn out behind the lance or the base tube, and these are connected to the winding device. Therefore, in the conventional method of rotating the base tube together, the rotation angle of the nozzle is limited. In some cases, spraying was difficult. For example, if the nozzle is set in the horizontal direction so as to face the side wall of the furnace chamber from the beginning, it becomes difficult to repair the corner part and the furnace bottom of the furnace chamber. For this reason, there are places where spraying is difficult or impossible, and the lance head at the leading end of the lance must be replaced each time. This causes a reduction in the efficiency of the repair work, and also increases the cost because the rotation mechanism of the base pipe becomes large-scale.
[0004]
Therefore, an object of the present invention is to repair any damage to the coke oven wall without changing the lance head in order to improve the efficiency of the repair work of the coke oven wall. It is an object of the present invention to provide an apparatus for repairing a coke oven wall.
[0005]
[Means for Solving the Problems]
The apparatus for repairing a coke oven wall according to the present invention is characterized in that a lance head having a nozzle for spraying a repair material is rotatably provided on the lance at a tip portion of the lance.
[0006]
More specifically, at the tip of the lance, a lance head having a spray nozzle for the repair material, bearing means for supporting the lance head coaxially with the lance, and rotation driving means for rotating the lance head, An apparatus for repairing a coke oven wall, comprising:
[0007]
In other words, the repair device of the present invention can change the direction of the nozzle to an arbitrary angular position by rotating only the lance head coaxially, so that the repair device can be used for any existing coke oven wall damage. Repair can be performed immediately without changing the lance head. Therefore, the efficiency of the repair work is improved.
Since the nozzle can be rotated at an angle close to 360 degrees by rotating the nozzle in the opposite direction by about 180 degrees, it is possible to cover not only both side walls of the coke oven but also the entire wall of the oven including the upper and lower walls and the corner portion. That is, no blind spot occurs in the nozzle direction. Therefore, there is no need to replace the lance head. Further, since the rotation driving means of the lance head may be of small size and small output, the cost can be reduced.
[0008]
Further, in the present invention, the rotation driving means is provided inside the lance head.
[0009]
By incorporating the rotation driving means in the lance head, there is no projection on the outside, so that there is no need to worry about collision with the furnace wall when rotating the lance head.
[0010]
Further, in the present invention, an imaging means and a distance measuring means are further provided inside the lance head.
[0011]
With this configuration, it is possible to monitor and repair a damaged portion by remote control.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an outline of a coke oven wall repair apparatus of the present invention. FIG. 2 is a sectional view of a lance head, FIG. 3 is a sectional view taken along line AA of FIG. 2, and FIG. It is explanatory drawing which shows a nozzle direction.
[0013]
The repair device 10 exemplified in this embodiment is constituted by a multistage telescopic lance device, and includes a base tube 1, a first lance 2, a second lance 3, a third lance 4, and a lance tip portion. A lance head 5 is provided. The first to third lances 2 to 4 can be telescopically extended and retracted by a telescope mechanism, and since such an extensible mechanism is publicly known, detailed description is omitted. When the first stage lance 2 is extended and contracted by the rack and pinion mechanism by the servomotor 6, the lances are extended and contracted in synchronism by a chain connecting the base tube 1 and each lance.
[0014]
The repair device 10 is mounted on a carriage 7 that moves on a work floor 101 of a coke oven 100, and further rotatably supports the base tube 1 by a support mechanism 9 on a movable platform 8 that can slide in the same direction. And a tilting mechanism 11 composed of an electric cylinder or a hydraulic cylinder for tilting the base tube 1 so as to be able to be raised. In the figure, reference numeral 12 denotes a winding device for cables and hoses, and a plurality of winding devices are arranged on the moving table 8. Of course, wheels are provided at the rear of the base tube 1 to lead to the respective winding devices 12, but are not shown here.
[0015]
The lance head 5 according to the present invention is rotatably mounted coaxially on the third lance 4 as shown in FIG. That is, the lance head 5 is supported by the distal end of the third lance 4 via the bearing 13 so as to rotate around the axis.
[0016]
The rotating device 14 of the lance head 5 is provided inside the lance head 5, and a driving servomotor 15 is attached to the tip of the third lance 4, and a pinion 17 provided on a rotating shaft 16 of the servomotor 15 is attached. The lance head 5 is configured to rotate by meshing with an internal gear 18 attached to the inner surface of the lance head 5. Further, a goniometer (for example, an encoder) 19 for detecting the rotation angle of the lance head 5 is attached to the tip of the rotation shaft 16 of the servomotor 15. Reference numeral 20 denotes a mounting member for the internal gear 18.
[0017]
Further, a nozzle 21 is mounted inside the lance head 5, and a spray material supply hose 22 connected to the nozzle 21 extends through the internal gear 18, and connects a rotary joint 23 on the lance axis. It is connected to a spray material supply hose 24 extending to the third lance 4 via the lance 4. The tip of the nozzle 21 faces the opening 25.
[0018]
Therefore, by rotating the servo motor 15 of the rotating device 14 forward or backward, the bearing 13 is rotatably mounted on the distal end of the third stage lance 4 via the gear transmission mechanism including the pinion 17 and the internal gear 18. The supported lance head 5 can be rotated clockwise or counterclockwise by about 180 degrees, respectively, so that the direction of the nozzle 21 can be changed at an angle close to 360 degrees.
[0019]
Since the rotation device 14 only rotates the lance head 5, a small and small output device may be used, and the cost can be reduced. In addition, since the rotating device 14 can be provided inside the lance head 5 and no projection is formed outside, there is no need to worry about collision with the furnace wall when inserting the lance or rotating the lance head.
[0020]
Further, a rangefinder 26 such as a laser sensor, an imaging device 27 such as a CCD camera, and an illumination device 28 are provided inside the lance head 5, and the furnace wall surface is monitored and observed by the imaging device 27 by remote control. At the same time, the wear amount (depth, furnace chamber width, etc.) of the damaged portion is measured by the distance meter 26, and if necessary, the servomotor 15 of the rotating device 14 is controlled at the damaged portion to obtain the required rotation The direction of the nozzle 21 is oriented so as to form an angle, and thereafter, the sprayed material of the repair material is sprayed to repair the damaged portion.
[0021]
In FIG. 2, reference numerals 29, 30, and 31 denote cables for the distance meter 26, the imaging device 27, and the illumination device 28, respectively. Sufficient slack is provided in the lance head 5, passes through the internal gear 18, is pulled out from the base tube 1 through each lance, and is fed or wound by the winding device 12. 32 and 33 are window glasses.
[0022]
As shown in FIG. 1, the repair device 10 inserts lances 2 to 4 into a carbonization chamber or a combustion chamber of a coke oven, and scans the furnace wall to search for a damaged portion. This operation is performed by remote control.
Then, as described above, the direction of the nozzle 21 can be changed at an angle close to 360 degrees by rotating the lance head 5 by the rotating device 14. For example, as shown in FIG. The direction of 21 can be easily directed to the corner of the furnace chamber 102, or changed from that position to a horizontal horizontal position as shown in FIG.
[0023]
Therefore, it is possible to scan the furnace wall brick surface almost entirely from the furnace bottom to the ceiling wall, as well as the side walls on both sides, and immediately replace the lance head without replacing the lance head even if any damage occurs. The damage can be repaired. Therefore, if the repair apparatus 10 is used, the repair work of the coke oven wall can be performed with high efficiency, and the life of the coke oven can be further extended.
[0024]
In the above embodiment, the lance head 5 is rotated by the servo motor 15, but as shown in FIG. 5, the insertion hole 41 of the jig 40 is formed in the lance head 5, and the rotation of the lance head 5 is changed. A push bolt 42 for fixing the rear position is provided, the lance head 5 is taken out of the furnace together with the reduction operation of the lances 2 to 4, and the lance head 5 is manually rotated by the operator using the jig 40 and the desired. After rotating to the position, the jig 40 may be removed and the rotational position of the lance head 5 with respect to the lance 4 may be fixed by the push bolt 42.
As is apparent from the above description, the present invention relates to a rotation mechanism of a lance head at a lance tip, and a lance device that rotatably supports the lance head may have any configuration. Absent. That is, the present invention is not limited by a lance expansion / contraction or reciprocation mechanism, a support mechanism, an up / down, front / back, tilt / turn mechanism, and the like.
[0025]
【The invention's effect】
As described above, according to the present invention, the lance head is rotatably provided at the tip of the lance, so that no matter where the damage occurs, the lance head is immediately replaced without replacement. The damage can be repaired, the repair work of the coke oven wall can be performed efficiently, and the life of the coke oven can be further extended. Further, since only the lance head is rotated, the configuration is simple and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a schematic view of a coke oven wall repair apparatus of the present invention.
FIG. 2 is a sectional view of a lance head.
FIG. 3 is a sectional view taken along line AA of FIG. 2;
FIG. 4 is an explanatory diagram showing rotation of a lance head and nozzle directions.
FIG. 5 is a diagram showing another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base pipe 2 1st stage lance 3 2nd stage lance 4 3rd stage lance 5 Lance head 7 Dolly 8 Moving table 9 Support mechanism 10 Repair device 11 Tilting mechanism 13 Bearing 14 Rotary device 15 Servo motor 16 Rotary shaft 17 Pinion 18 Tooth gear 19 Angle meter 21 Nozzle 26 Distance meter 27 Imaging device 28 Lighting device 100 Coke oven

Claims (3)

At the tip of the lance,
A lance head having a spray nozzle for repair material,
Bearing means for supporting the lance head coaxially with the lance,
Rotation driving means for rotating the lance head,
An apparatus for repairing a coke oven wall, comprising: The repair apparatus for a coke oven wall according to claim 1, wherein the rotation drive means is provided inside the lance head. The coke oven wall repair apparatus according to claim 2, wherein an imaging means and a distance measuring means are further provided inside the lance head.

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