JP3424575B2 - Coke oven door frame cutting equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a door frame cutting device for a coke oven. More specifically, according to the present invention, due to the deformation of the coke oven due to long-term operation, the seat surface of the door frame arranged to be inclined from the normal direction is accurately cut over the entire circumference. The present invention relates to a door frame cutting device for a coke oven.

[0002]

As is well known, coke ovens carbonize coal to produce coke which is used as a reducing agent during blast furnace operation. During carbonization, in addition to coke, coke oven gas and gas liquids such as raw materials for chemical products and coal tar are produced as by-products. The furnace body of this coke oven is roughly divided into
It consists of a carbonization chamber, a heating chamber (combustion chamber) and a heat storage chamber, all of which are constructed by stacking dense individual refractory bricks.

FIG. 6 is an explanatory view schematically showing a carbonization chamber of a coke oven. 6, the coke oven 1 is arranged in a number (6 in 46 groups) aligned state. Doors (furnace lids) 2-1 to 2-46 are provided at the openings of the carbonization chambers, respectively.
Is provided. Doors 2-1 to 2-46 are opened into each carbonization chamber to discharge coke, and doors 2-1 to 2-46 are closed.
Then coal is charged. At the outer edge of the opening of the carbonization chamber 1,
A door frame (furnace lid frame) is provided, and the door 2-1
When ~ 2-46 is closed, the doors 2-1 to 2-46 come into contact with the seat surface of the door frame to seal the carbonization chamber.

By the way, when the coke oven 1 is operated for a long time, the doors 2-1 to 2-46 are attached to the seat surface of the door frame.
Scratches occur due to the pressing of the gas, gas leakage, and oxidative corrosion. Due to the generated damage, a gap is created in the metal touch portion between the door frame and the doors 2-1 to 2-46, and the gas sealability in the carbonization chamber is deteriorated. If the gas sealability in the carbonization chamber is deteriorated, the coke oven gas containing harmful coal tar leaks to the outside of the furnace, deteriorating the surrounding environment.

For this reason, a number of door frame cutting devices have been proposed in the past for smoothing the seat surface of the door frame of a coke oven that has been operated for a long period of time to ensure the sealing performance with the door.

For example, Japanese Laid-Open Patent Publication No. 5-247469 discloses a quadrangular frame-shaped body which is connected by a back stay of a door frame and a plurality of fixing devices so as to be freely movable through vertical and horizontal guide and feed mechanisms. A cutting device equipped with a furnace frame outer surface cutting device has been proposed.

Further, in Japanese Unexamined Patent Publication No. 7-188662, a pedestal is erected on a trolley part capable of traveling on the platform of a coke oven, and an elevating part is attached to the pedestal so as to be vertically movable by a motor. There has been proposed a cutting device in which a rotary cutter is provided on a shaft box.

Further, the present applicant has proposed a cutting device of the same kind as the cutting device according to these proposals, from Japanese Patent Laid-Open No. 8-92563. FIG. 7 is a front view showing this cutting device, and FIG. 8 is a side view.

In this cutting device, as shown in FIGS. 7 and 8, a traveling carriage 5 traveling along a platform 4 of a coke oven 3 is provided with a vertical column 6 in a gate shape, and the vertical column 6 is provided with an elevating and lowering machine platform 7. Are engaged and provided in the front-rear and left-right directions. Then, a left and right sliding base 8 is provided on the lifting / moving machine base 7, and a front and rear sliding base 9 is provided on the left and right sliding base 8. Then, a door frame is attached to the tip of the front-rear direction rotating shaft 10 provided on the front-rear slide base 9.
A grindstone 12 having a diameter larger than the width of the seat surface 11 'of 11 is provided, and while the grindstone 12 is pressed against the seat surface 11' by the actuator 13, the grindstone rotation speed, the up-and-down speed of the lifting / lowering machine base 7, or the left / right sliding base is The seat surface is cut by adjusting the left and right moving speed of 8.

[0010]

However, even with these proposals, it is not possible to smoothly cut the seat surface of the door frame of the coke oven operated for a long time. The reason for this will be described below.

The scratches on the door frame of the coke oven are generated due to the fact that the door is repeatedly attached and detached during a long-term operation of 20 to 30 years, for example.
As described above, in the coke oven that has been operated for a long period of time so that the door frame is damaged, the refractory bricks constituting the carbonization chamber and the combustion chamber are expanded and deformed.

FIG. 9 is an explanatory view schematically showing a coke oven in which the refractory brick has expanded, and FIG. 9 (a) is a front view and FIG.
(b) is a side view. As shown in Figures 9 (a) and 9 (b), the coke oven 14 in which the refractory brick has expanded in this way
Is the length direction of the coke oven 14 (coke extrusion direction: FIG. 9).
The upper part of the furnace is larger than the lower part of the furnace in the left-right direction in (b) and the furnace group direction (the paralleling direction of the carbonization chambers: the left-right direction in Fig. 9 (a)), so that it has a fan-like shape. For example, in a coke oven that has been in operation for 30 years,
Regarding the furnace length direction, the upper part of the door frame is
In the carbonization chamber 2-46, which is located at the end in the furnace group direction, the upper part of the door frame projects more than 30 mm from the lower part. Therefore, the door frame fixed as a frame to the outer wall surface of the coke oven is also arranged to be inclined from the vertical plane in the furnace length direction and the furnace group direction.

Specifically, as shown in FIG. 9, the door frame 11 located at the end has an inclination of an angle α in the furnace group direction with respect to the door frame cutting machine body due to expansion of the furnace. There is. In FIG. 9, the left side of the drawing is the end direction, and the right side is the center direction. Also, with this cutting device,
As shown in FIG. 9, each door frame 11 is inclined at an angle β with respect to the door frame cutting machine.

On the other hand, the traveling carriage 5 which constitutes the cutting device for the door frame 11 travels on a horizontal rail that serves both as a coke guide wheel and an extruder laid on the platform of the coke oven. Therefore, the grindstone 12 is shown in FIG. 9 (a) and FIG.
It is not affected by the expansion deformation of the furnace as shown in (b),
Continue to maintain the original installation posture.

Therefore, even if the inclined door frame 11 is to be cut with a conventional door frame cutting device, the cutting amounts in the upper and lower portions of the door frame 11 cannot be made equal, and the upper and lower portions are not cut. There is a difference in the cutting amount between and. For example, in the example shown in FIGS. 7 and 8, there are a part where the upper part of the door frame 11 is cut 20 mm deeper than the lower part in the furnace length direction and a part where the lower part and the upper part of the door frame 11 cannot be cut 30 mm in the furnace group direction. Will occur. In the furnace group direction, it seems that a cutting tool having a diameter larger than the width of the door frame 11 should be used as a countermeasure to cover the tilt of the furnace frame in the furnace frame direction.
11 has bar tacking hooks 100a and 100b installed at a position of a few millimeters, which is actually impossible because the cutting tools interfere with each other. Therefore, even with these proposals, it is not possible to cut the seat surface of the door frame of the coke oven operated for a long time.

Incidentally, JP-A-5-247469 and 7-18.
Japanese Patent No. 8662 describes fixing a door frame cutting device to a coke oven furnace fastening back stay using a fixing device and a clamp device. It is considered that this is because the door frame cutting device follows the inclination of the door frame to some extent. However, the door frame cutting device has its own weight of about 20 tons. For this reason, even if this fixing device is used, the door frame cutting device can be installed in the door frame 11
There is a limit of about 10 mm that can be adjusted to the inclination of the furnace length direction and the furnace group direction. Therefore, it is actually difficult to align the door frame cutting device with the door frame 11 with an accuracy within 1 mm required for cutting.

An object of the present invention is to operate a door for a long time, so that a seat surface of a door frame of a coke oven inclined in two directions of a furnace length direction and a furnace group direction can be smoothly cut, and a coke oven door frame. It is to provide a cutting device.

[0018]

DISCLOSURE OF THE INVENTION The present invention is arranged on a platform provided in front of a coke oven in which a large number of carbonization chambers are arranged side by side, so that the carbonization chambers can travel in the direction of arrangement. A traveling vehicle, a cutting machine mounted on the traveling vehicle so as to be movable in at least two directions of approaching and separating from a door frame formed in each of a number of carbonization chambers and up and down directions, and a traveling vehicle at a stop time. A coke oven characterized in that the cutting tool supported on the coke oven side of the cutting machine by tilting with respect to the platform is combined with a traveling carriage inclining device that moves the cutting tool substantially parallel to the seat surface of the door frame. Door frame cutting device.

In the coke oven door frame cutting apparatus according to the present invention, (i) the traveling carriage tilting device is used to move the traveling carriage among the two tilting directions of the door frame generated by the coke oven operating for a long time. In at least one direction of, or (ii) the traveling carriage tilting device,
It is illustrated that a plurality of elevating devices that are respectively installed near the corners of the traveling vehicle and that independently elevate the traveling vehicle with respect to the platform are provided.

Here, when the traveling carriage has a plurality of traverse mechanisms for approaching and leaving the door frame, a plurality of lifting devices are respectively provided in the plurality of traverse mechanisms so that the traverse mechanism serves as the traveling carriage. For example, raising and lowering is performed. A jack can be exemplified as such a lifting device.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a door frame cutting device for a coke oven according to the present invention will be described in detail below with reference to the accompanying drawings. In the following description of the embodiment, the case where the traveling carriage has four sets of traveling mechanisms for moving toward and away from the door frame is taken as an example.

FIG. 1 is a horizontal sectional view of a traveling carriage 21 which constitutes a door frame cutting device 20 for a coke oven according to the present invention. Further, FIG. 2 is a vertical sectional view of the traveling carriage 21.

1 and 2, the door frame cutting device 20 according to this embodiment includes a traveling carriage 21 and a cutting machine (not shown) mounted on the traveling carriage 21.

In the present embodiment, the cutting machine mounted on the traveling carriage 21 is exactly the same as that shown in FIGS. 2 and 3 of the above-mentioned Japanese Patent Laid-Open No. 8-92563, and therefore will be briefly described. That is, a vertical column is provided on the upper surface of the traveling carriage 21. An elevating and moving pedestal is provided on the vertical column so as to be engaged in the front, rear, left and right directions (directions toward and away from the coke oven). Then, the left and right sliding bases are provided on the lifting and lowering machine base, and the front and rear sliding bases are provided on the left and right sliding bases. A front-rear rotating shaft is provided on the front-rear slide table, and a cutting tool having a diameter larger than the width of the seat surface of the door frame is provided at the front end of the front-rear rotating shaft on the coke oven side. Then, the cutting surface of this cutting tool is pressed against the seat surface by the actuator.

Thus, in this embodiment, the cutting machine is
The traveling carriage 21 is mounted so as to be movable in two directions, that is, a direction toward and away from a door frame formed in each of a number of carbonization chambers and a vertical direction. The cutting machine of this embodiment is known from Japanese Patent Application Laid-Open No. 8-92563, so further description will be omitted.

On a platform 22 provided in front of a coke oven (not shown) in which a large number of carbonization chambers are arranged in parallel, the carbonization chambers are aligned in the parallel direction (the horizontal direction in each of FIGS. 1 and 2). Guide rail track 23 is laid.

The traveling carriage 21 is composed of a frame formed in a rectangular plane shape. Traveling wheels 24a to 24d traveling on the guide rail 23 are rotatably supported at four corners on the lower surface of the traveling carriage 21 via traveling wheel bearings 25a to 25d.

The traveling wheels 24a and the traveling wheels 24c are drive shafts.
Connected by 26. A worm wheel (not shown) is fixed to a part of the drive shaft 26. This worm wheel is a worm gear (not shown) fixed to the rotating shaft of a traveling wheel drive motor 27 mounted on the traveling carriage 21.
Is meshing with. By starting the traveling wheel drive motor 27, power is transmitted via the worm gear, the worm wheel, and the drive shaft 26, and both the traveling wheels 24a and the traveling wheels 24c are rotationally driven in the same direction. As a result, the traveling wheels 24a and the traveling wheels 24c roll while being guided by the guide rail track 23.

On the other hand, although not shown, a worm gear, a worm wheel, a drive shaft and a traveling wheel drive motor are also installed between the traveling wheels 24b and 24d. By starting the traveling wheel drive motor, power is transmitted via the worm gear, the worm wheel, and the drive shaft, and both traveling wheels 24b and 24d are rotationally driven in the same direction. As a result, the traveling wheels 24b and the traveling wheels 24d are guided by the guide vehicle rail 23,
Rotate.

As described above, in this embodiment, the traveling wheels 24
a to 24d are driven by two traveling wheel drive motors,
As a result, the traveling carriage 21 travels on the guide vehicle rail 23 laid on the platform 22 toward the furnace group to the front of the carbonization chamber where the door frame is cut.

On the other hand, the door frame cutting device of this embodiment
Aside from this traveling device, 20 is moved forward and backward in the direction toward and away from the coke oven in order not to hinder the operation of the coke firing operation of the coke guide vehicle and the extruder, and retreats to the inter-core deck. A traverse mechanism 28 for

The traveling wheels at the four corners of the lower surface of the traveling carriage 21
In the vicinity of 24a to 24d, transverse wheels 28a to 28d are rotatably supported via transverse wheel bearings 29a to 29d in a direction orthogonal to the rotational directions of the traveling wheels 24a to 24d. The transverse wheel bearings 29a to 29d are mounted on the slide suspension jigs 31a to 31d, respectively. Slide hanging jig
31a to 31d rotate with respect to the axles 30a to 30d via bearings provided on the axles 30a to 30d. These slide suspension jigs 31a to 31d are attached to the frame of the traveling carriage 21,
Fixed rail 33a for slide fixed vertically
Guided by ~ 33d, it slides. Further, the traveling carriage 21 is equipped with jacks 34a to 34d. Jack 34a ~
34d is connected to the upper surfaces of the slide suspension jigs 31a to 31d. Each jack 34a-34d has a jack lifting motor 35
a to 35d are connected.

Therefore, the jack lifting motors 35a-35
When starting d independently, jacks 34a-34d
Operates independently accordingly, and the slide hanging jig 31a
~ 31d and axles 30a ~ 30d, traverse wheels 28a ~
28d moves up and down with respect to the frame of the traveling carriage 21.

As described above, the traverse wheels 28a to 28d can be lifted and lowered with respect to the frame of the traveling carriage 21 independently of each other by the slide suspension jigs 31a to 31d. As a result, the traveling carriage 21 is moved to the coke oven platform 22.
It can be freely tilted with respect to.

3 to 5, all of the traverse wheels 28a to 28a.
It is a side view which expands and shows the 28d vicinity. As shown in FIGS. 1 to 5, the axles 30a to 30d of the transverse wheels 28a to 28d are
The box-shaped fixed frames 32a to 32d for inclining the door frame are rotatably supported on the axles 30a to 30d so as to accommodate the transverse wheels 28a to 28d.

The fixed frames 32a to 32 for tilting the door frame are also provided.
Fixed frames rotating cylinders 37a to 37d for inclining the door frame supported by cylinder supporting bases 36a to 36d fixed to the frame of the traveling carriage 21 are connected to the fulcrum A at the lower end of d, and are used to incline the door frame. Fixed frame rotation cylinder 37
By activating a to 37d, the fixed frames 32a to 32d for inclining the door frame can rotate in the ranges shown in FIGS. 3 and 5 about the rotation axes of the axles 30a to 30d as rotation centers.

That is, the fixed frame 32a for tilting the door frame
~ 32d is the guide rail 23 as shown in Figs.
If it faces, the traverse wheel 28a cannot contact the upper surface of the traverse rail 23 'and cannot traverse. Therefore, in the present embodiment, the fixed frame rotating cylinders 37a to 37d for tilting the door frame are used to fix the fixed frame 32a for tilting the door frame.
It was decided to rotate ~ 32d to retract it.

Further, in this embodiment, as shown in FIGS. 3 to 5, the spherical bearings 38 are provided at the connecting portions between the fixed frames 32a to 32d for inclining the door frame and the jacks 34a to 34d.
a to 38d are interposed. This allows the jack 34a
Door frame cutting machine 20 with guide rail 23
The door frame cutting machine can be securely fixed to the door frame, and the inclination of the door frame cutting machine for adjusting to the inclination of the door frame can be set arbitrarily quickly.

1 and 2, the traverse wheels 28a and
A traverse speed reducer 39 and a traverse motor 40 connected to the traverse speed reducer 39 are arranged so as to be positioned between the traverse speed reducer 39 and the motor 28b. Then, the traverse wheels 28a, 28b and the traverse reducer 39 are
Connected by universal joints 41, 42. As described above, in the present embodiment, since the fixed frames 32a to 32d for inclining the door frame are arranged to be able to move up and down, the transverse transmission of the transverse wheels 28a to 28d and the transverse reduction gear 39 via the universal joints 41 and 42. But
It is necessary to change the lengths of the universal joints 41, 42 depending on whether the fixed frames 32a to 32d for inclining the door frame are in the raised position or in the lowered position. Therefore, in this embodiment, the universal joints 41 and 42 are of a slide type having a spline structure,
The axial length is variable.

The door frame cutting device 20 of this embodiment is
As described above, (i) traveling in the direction in which the carbonization chambers are arranged in parallel (left and right in FIGS. 1 and 2) on the platform 22 provided in front of the coke oven in which a large number of carbonization chambers are arranged in parallel. A traveling carriage 21 which is freely arranged and has four traverse mechanisms 28 in a direction approaching and leaving the door frame.
And (ii) a cutting machine (not shown) mounted on the traveling carriage 21 so as to be movable in two directions, that is, a vertical direction and a direction toward and away from door frames formed in each of the plurality of carbonization chambers. , (Iii) a plurality of jacks 34a to 34d that are respectively provided on the four traverse mechanisms 28 and that raise and lower the traverse mechanism 28 with respect to the traveling carriage 21 to independently raise and lower the traveling carriage 21 with respect to the platform. Has a traveling carriage 21
Of the cutting tool supported on the tip side of the coke oven side of the cutting machine by inclining the blade in any of the two inclination directions of the door frame generated by the coke oven operating for a long time. Is provided in combination with traveling vehicle tilting devices 43a to 43d for moving the vehicle substantially parallel to the seat surface.

Next, the door frame cutting device of this embodiment
Focusing on the operation of the traveling carriage 21, the operation of 20 will be described separately for (1) traveling, (2) traverse, and (3) cutting.

(1) The traveling traverse mechanism 28 need not be used when the traveling carriage 21 travels on the guide rail 23. Therefore, when traveling, as shown in FIG.
As shown in FIG. 5, the jacks 34a to 34d are activated to raise and retract the traverse wheels 28a to 28d and the door frame tilting fixed frames 32a to 32d to a height that does not interfere with the guide rail 23 and the like. In this state, by activating the traveling wheel drive motor 27, the traveling carriage 21 travels on the guide rail 23.

(2) Retract the traveling carriage 21 during traverse to the furnace between the carbonization chambers (traverse)
At this time, as shown in FIG. 4, by operating the fixed frame rotating cylinders 37a to 37d for inclining the door frame, the fixed frames 32a to 32d for inclining the door frame are rotated by 90 °, and the fixed frame for inclining the door frame. The ends of 32a to 32d should be oriented horizontally. This allows the traverse wheels 28a-28d.
Faces the upper surface of the guide rail track 23. And
The jacks 34a to 34d are operated to lower the traversing wheels 28a to 28d so as to abut the guide wheel rail 23 and further lower. Then, the frame of the traveling carriage 21 and the traveling wheels 24a to 24a
d and the like are in a state of floating apart from the guide rail 23. At this time, as shown in FIG. 4, the traverse wheels 28a to 28d.
Abuts on the center of the guide rail 23. As a result, the traverse wheels 28a to 28d come into contact with the traverse rail 23 ', and when the traverse motor 40 is started at this time, the traverse wheels 28a to 28d are guided by the traverse rail 23' and travel. In this way, the traveling carriage 21 can be evacuated between the furnaces between the carbonization chambers.

(3) At the time of cutting At the time of cutting the door frame, as shown in FIG. 5, the fixed frame rotating cylinders 37a to 37d for tilting the door frame are operated to move the fixed frames 32a to 32d for tilting the door frame downward. Rotate. Further, the jacks 34a to 34d are operated to lower the fixed frames 32a to 32d for inclining the door frame. Thus, as shown in FIG. 5, the fixed frame for tilting the door frame
The lower surfaces of 32a to 32d are brought into contact with the guide rail track 23. From the state shown in FIG. 5, a fixed frame for tilting the door frame is further added.
When the wheels 32a to 32d are lowered, all the traveling wheels 24a to 24d leave the upper surface of the guide rail 23 and are in a floating state.
Therefore, the traveling carriage 21 has a fixed frame for tilting the door frame.
It is fixed to the guide rail track 23 via 32a to 32d.

At this time, the fixed frame 32a for tilting the door frame
The traveling carriage 21 can be tilted in any direction with respect to the platform 22 by adjusting the descending amount of the fixed frames 32a to 32d for tilting the door frame for each 32d.

That is, the traveling carriage 21 is shown in FIG.
When adjusting to the inclination in the furnace length direction shown in (b), the descending amounts of the door frame inclining fixed frames 32a and 32b are set to be larger than the descending amounts of the door frame inclining fixed frames 32c and 32d. On the other hand, when the traveling carriage 21 is adjusted to the inclination toward the furnace group shown in FIG. 9 (a) described above, the descending amounts of the fixed frames 32a and 32c for inclining the door frame are set to the fixed frame 32b for inclining the door frame, Set larger or smaller than the descent amount of 32d. And in any case, while appropriately adjusting the descending amount of the fixed frames 32a to 32d for tilting the door frames,
The traveling carriage 21 is tilted in an arbitrary direction with respect to the platform 22.

As described above, according to the door frame cutting device 20 of the coke oven of the present embodiment, the existing traverse mechanism 28 is diverted in order to retract the cutting machine, and the jacks for raising and lowering the traverse wheels 28a to 28d are raised and lowered. The traveling carriage 21 can be tilted and arranged on the platform 22 at an arbitrary angle by using 34a to 34d. As a result, the cutting surface of the cutting tool of the cutting machine mounted on the traveling carriage 21 can be moved substantially parallel to the entire seat surface of the door frame inclined by the expansion of the furnace or the like. As a result, the seat surface of the door frame can be reliably cut.

Specifically, according to the door frame cutting device 20 of the coke oven of the present embodiment, the upper portion is 20 mm closer to the lower portion in the furnace length direction and the upper portion is 30 mm lower from the lower portion in the furnace group direction. With respect to the door frame of the carbonizing chamber which is approaching, the cutting tool is used to measure the parallel distance error with the door frame surface in the furnace length direction and the furnace frame direction in the two directions of the furnace length and the door in the furnace group direction. Vertical center misalignment between frame and door frame cutting machine is easily 1mm
The traveling carriage 21 can be fixed to the guide rail 23 while keeping the inside. Further, the inclination adjustment time can be performed within 30 minutes, and the stoppage of the coke oven operation due to the cutting of the door frame can be suppressed to the minimum.

(Modified Embodiment) In the description of the embodiment, the case where the traveling vehicle also has a traverse mechanism is taken as an example. However, the present invention is not limited to such a form, and can be similarly applied to a case where the traveling carriage does not have a traverse mechanism. In this case, the tilting cylinder may be brought into direct contact with the platform.

Further, in the description of the embodiment, the operating amount of each jack is set while manually adjusting appropriately while observing the inclination state of the traveling carriage. However, the present invention is not limited to this mode, and may be automatically set as follows. That is, the amount of inclination of the door frame is detected in advance in two directions, the furnace length direction and the furnace group direction, by using sensors as appropriate, and the detected value is compared with the predetermined operation amount of each jack and the inclination amount of the door frame. By inputting the relationship as a table value into a pre-stored calculator, calculating the operation amount of each jack corresponding to the input tilt amount, and inputting the calculation result as a stroke signal to the jack with position sensor, The operation amount of the jack can be set automatically. As a result, the time required to tilt the traveling carriage 21 in a desired state can be further shortened.

In the description of the embodiment, the door frame tilting fixed frame rotating cylinder is used to rotate and move the door frame tilting fixed frame, but the present invention is not limited to such a form. Alternatively, the fixed frame for tilting the door frame may be rotated by other means. For example, with the wire etc. provided in the winding device,
The fixed frame for tilting the door frame may be rotated.

In the description of the embodiment, the case where the lifting device is a jack has been taken as an example, but the present invention is not limited to this aspect, and the same applies to known lifting devices other than jacks. Holds.

Further, in the description of the embodiment, the traverse wheel has four wheels.
Although the case where the base is provided is taken as an example, the present invention is not limited to such a form, and the same applies if a plurality of traverse wheels are provided.

Further, although the description of the embodiment has been made by taking the case where the traveling carriage is inclined in two directions of the furnace group direction and the furnace length direction, the present invention is not limited to such a mode, and the furnace group direction and It may be inclined in at least one direction of the furnace length direction.

Further, the description of the embodiment has been made by taking the case where the door frame cutting device described in Japanese Patent Laid-Open No. 8-92563 is mounted on the traveling carriage as an example, but the present invention is not limited to such a form. The same applies to a traveling carriage equipped with a cutting machine that is movable in at least two directions of approaching and separating from a door frame and up and down directions.

[0056]

As described in detail above, the door frame cutting apparatus for a coke oven according to the present invention allows the running even when the conventional door frame cutting apparatus cannot cut due to the inclination of the door frame. While accurately fixing the dolly on the platform, the cutting tool installed in the door frame cutting machine is easily moved substantially parallel to the inclination of the door frame in the furnace length direction and the furnace group direction, and the inclined coke oven door The seat surface of the frame can be cut smoothly.

Further, when the traveling carriage has the traverse device, the jack for raising and lowering the traverse device can be diverted to incline the traveling carriage, so that it can be implemented simply and inexpensively. The significance of the present invention having such an effect is extremely remarkable.

[Brief description of drawings]

FIG. 1 is a horizontal sectional view of a traveling carriage that constitutes a door frame cutting device for a coke oven according to the present invention.

FIG. 2 is a vertical sectional view of a traveling carriage that constitutes a door frame cutting device for a coke oven according to the present invention.

FIG. 3 is a side view showing, on an enlarged scale, the vicinity of traverse wheels of a traveling carriage that constitutes a door frame cutting device for a coke oven according to the present invention.

FIG. 4 is a side view showing, on an enlarged scale, the vicinity of traverse wheels of a traveling carriage that constitutes a door frame cutting device for a coke oven according to the present invention.

FIG. 5 is a side view showing, on an enlarged scale, the vicinity of traverse wheels of a traveling carriage that constitutes a door frame cutting device for a coke oven according to the present invention.

FIG. 6 is an explanatory view schematically showing a carbonization chamber of a coke oven.

FIG. 7 is a front view showing a cutting device proposed by Japanese Patent Laid-Open No. 8-92563.

FIG. 8 is a side view showing a cutting device proposed by Japanese Patent Laid-Open No. 8-92563.

9A and 9B are explanatory views schematically showing a coke oven in which a refractory brick has expanded, FIG. 9A is a front view, and FIG. 9B is a side view.

[Explanation of symbols]

20 Door frame cutting device 21 traveling trolley 22 platforms 23 Guide rail 24a-24d running wheels 28 Traverse mechanism 28a ~ 28d Traverse wheels 30a-30d axle 31a ~ 31d Slide hanging jig 32a ~ 32d Fixed frame for tilting door frame 33a ~ 33d Fixed rail for slide 34a-34d jacks 37a ~ 37d Fixed frame rotation cylinder for tilting door frame 38a ~ 38d Spherical bearing 40 traverse motor 41, 42 Universal

─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-8-92563 (JP, A) JP-A-7-188662 (JP, A) JP-A-48-84103 (JP, A) JP-B-46- 5588 (JP, B1) (58) Fields investigated (Int.Cl. ⁷ , DB name) C10B 25/02 C10B 25/16

Claims (5)

(57) [Claims] 1. A traveling carriage that is arranged on a platform provided in front of a coke oven in which a large number of carbonization chambers are arranged in parallel so as to be movable in the direction in which the carbonization chambers are arranged in parallel, and the traveling carriage. In addition, a cutting machine mounted so as to be movable in at least two directions of approaching and leaving a door frame formed in each of the plurality of carbonization chambers and a vertical direction, and the traveling carriage when stopped with respect to the platform. And a tilting device for moving the cutting tool supported on the coke oven side of the cutting machine substantially parallel to the seat surface of the door frame. Door frame cutting equipment. 2. The traveling vehicle inclining device inclines the traveling vehicle in at least one of two inclining directions of the door frame generated due to long-term operation of the coke oven. Door frame cutting device for the coke oven described. 3. The traveling vehicle inclining device comprises a plurality of lifting devices which are respectively installed near the corners of the traveling vehicle and independently elevate the traveling vehicle with respect to the platform. 2. A coke oven door frame cutting device described in 2. 4. When the traveling carriage has a plurality of traverse mechanisms for approaching and leaving the door frame, the plurality of lifting devices are provided in the plurality of traverse mechanisms, respectively. The door frame cutting device for a coke oven according to claim 3, wherein the door frame is moved up and down with respect to the traveling carriage. 5. The coke oven door frame cutting device according to claim 3, wherein the elevating device is a jack.