JP3616536B2 - Coke oven repair equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coke oven repair facility. In steelworks, coke is introduced as a reducing agent in a blast furnace that produces pig iron. This coke is produced by blending strong caking coal and weak caking coal in a coke oven at a high temperature. The coke oven is exposed to such a high temperature to generate thermal stress and damage to the furnace wall during long-term use due to the action of coal moisture and the like. Such damage is repaired by means such as thermal spraying of mortar, and the present invention relates to repair equipment for such a coke oven.
[0002]
[Prior art]
During normal operation of the coke oven, a guide car runs on the coke side, and an extruder runs on the machine side regularly. Since the thermal spraying apparatus performs repair work between these operations, it must be evacuated if a moving machine such as a guide car or an extruder runs.
By the way, the conventional thermal spraying apparatus includes a track traveling type that travels on a track on which a guide car and an extruder travel, and a deck traveling type that is equipped with tires and travels on a work deck.
In the former track running type, when retreating, it was necessary to move to the end of the track, so it took time to retreat.
With the latter deck traveling type, if the equipment weight is limited in terms of the load capacity of the work deck or the equipment weight is increased, the work deck needs to be reinforced.
[0003]
As the track traveling type repair machine, there is one described in JP-A-2-99589. In this conventional repair machine, as shown in FIG. 10, a swivel tower is placed on a carriage 100, and a long lance 105 is attached to the swivel tower so as to be raised and lowered. The lance 105 is called a long lance in the sense that it has a length that reaches the center of the furnace (for example, 12.8 m).
In the carriage 100, middle stage work floor traveling wheels 101 are installed at both end positions in the longitudinal direction of the rectangular carriage 100, and traverse wheels 102 are arranged in the front and rear positions near the center of the carriage 100. Normally, the latter traverse wheel 102 is stored at a high position, but at the intersections X and Y of traversing rails, it is pushed down by a hydraulic cylinder and comes into contact with traversing rails 104, while the intermediate work floor traveling wheel 101 is Away from the rail 103, the repair machine can be traversed. In this way, the carriage 100 is moved quickly on the track from either the coke side or the machine side.
[0004]
However, when attempting to traverse the track 104 with the repair machine, the distance between the front and rear wheels 102 is narrow and unstable, and it is dangerous to run in a spraying posture. Further, since the lance 105 is long, there is a problem that if the lance 105 is swung at the intersection Y or the intermediate deck, it interferes with the furnace wall or the coal tower T and cannot enter or exit the intermediate deck.
[Problems to be solved by the invention]
In view of the above circumstances, the present invention can use a thermal spraying device that is not limited by the weight of equipment, can be evacuated quickly, can be operated smoothly, and the traveling of the carriage is stable. It is an object of the present invention to provide a coke oven repair facility that can easily perform the above.
[0005]
[Means for Solving the Problems]
Coke oven repairing equipment according to claim 1, a plurality of furnace groups coke oven repair equipment arranged in series, a first track which is installed from one end of the coke oven to the other in co grasses id, machine side And the second track installed from one end to the other end of the coke oven and the intermediate deck between the adjacent furnace groups intersect the first track and intersect the second track , both tracks A third track installed so as to connect to each other, and a repair machine that travels on each track, and the repair machine is mounted on the travel cart that includes travel wheels with longitudinal traveling wheels in the longitudinal direction. A thermal spraying device for repairing the furnace wall, and the traveling carriage includes a jack device that lifts the traveling carriage and a swivel bearing that pivots the traveling carriage on the jack device. And Characterized in that it comprises a condensation freely spray lance.
The coke oven repair facility according to claim 2 is a coke oven repair facility in which a plurality of furnace groups are arranged in series, the first track installed from one end of the coke oven to the other end on the coke side, and the machine side in terrestrial surface, and repair machine carriage that travels the installed extruder traveling on a track from one end of the coke oven to the other end, is disposed to the intermediate deck adjacent Rodin, intersect for the first track A connected third track, and a repair machine that travels on the first track and the third track and is mounted on the repair machine carriage and moves on the front and rear in the longitudinal direction. And a thermal spraying device for repairing a furnace wall mounted on the traveling carriage, the traveling carriage turning up the traveling carriage on the jack apparatus that lifts the traveling carriage. Slewing bare Has a grayed, the spraying device is characterized in that it comprises a contoured universal and telescopic spray lance.
Coke oven repairing equipment according to claim 3 is the invention of claim 1 or 2, wherein the intersections of the track crossing each other, are installed to prevent tipping pivot bracket, the traveling carriage of the repair machine, the overturning A fall prevention hook is provided that is detachably engaged with the prevention bracket.
[0006]
According to the invention of claim 1, when the guide vehicle or the extruder has traveled on the first track or the second track, the repair machine travels to the end of the first track or the second track, What is necessary is just to enter a 3rd track | orbit and it should just evacuate to the nearer one. For this reason, the time required for evacuation is shortened and the operation can be performed smoothly. In addition, since the repair machine can adopt an orbital running type, it can be equipped with a thermal spraying device with sufficient capacity without being restricted by the equipment weight. For this reason, repair ability is also improved. Furthermore, since the carriage can be lifted by the jack device when turning into and out of the first and second tracks to the third track, the carriage always travels with the traveling wheels provided in the longitudinal direction. Even if the height is high, it is stable and the thermal spray lance is extensible, so if it is shortened, the carriage can be swung without interfering with the furnace wall, and the intermediate deck can be easily moved in and out.
According to the invention of claim 2, when the guide vehicle has traveled on the first track, the repair machine may travel to the end of the first track or enter the third track of the intermediate deck, whichever is closer. You only need to retreat to the direction. For this reason, the time required for retreating can be shortened and the operation can be performed smoothly. Furthermore, since the truck during and out of the third track from the first trajectory can be pivoted to lift jack device, truck always so runs at a running wheel which is provided on the front and rear in the longitudinal direction, of OsamuOsamu machine high Even if the height is high, it is stable and the thermal spray lance is extendable, so if it is shortened, the carriage can be swiveled without interfering with the furnace wall, and the intermediate deck can be easily moved in and out.
According to the invention of claim 3, when lifting the repair machine with a jack device and keep engaged the fall prevention hook fall prevention receiving brackets on the ground side, it is possible to prevent the overturning of the repair machine, the road trajectories You can safely change direction at the intersection .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of a coke oven repair facility according to an embodiment of the present invention, FIG. 2 is a side view of the coke oven repair facility, FIG. 3 is an explanatory diagram showing repair work of the repair machine, and FIG. FIG. 5 is a front view of the traveling carriage in the traveling state, FIG. 6 is a front view of the traveling carriage at the time of turning, FIG. 7 is a partially omitted plan view of the traveling carriage, and FIG. It is explanatory drawing of evacuation operation | movement.
[0008]
1-2, the coke oven F is composed of two furnace groups, an A furnace group and a B furnace group. The A furnace group and the B furnace group are both arranged with several tens of furnaces, and have a length of about 50 to 100 m. The A furnace group and the B furnace group are arranged in series in the longitudinal direction, and a coal tower T is installed between them. The total length of the coke oven F thus configured reaches about 100 to 200 m. Although the illustrated furnace group is two, three or more facilities are also included in the present invention.
[0009]
On the coke side (left side in the figure) of the coke oven F, a first track 1 is installed in parallel to the coke oven F and from one end to the other end. A second track 2 having the same length is installed on the machine side (right side in the figure), and a third track 3 is installed on the intermediate deck 4 between the A furnace group and the B furnace group. Yes. The second track 3 and the third track 3 are newly installed in the present invention and are not installed in the conventional equipment.
The third track 3, intersect orthogonally to the first track 1 and the second track 2, are connected to both track 1.
5 is a repair machine, and usually one is used. The repair machine 5 travels freely on the first track 1 and the second track 2 to perform repair work, and enters the third track 3 to perform a retreat operation.
[0010]
FIG. 3 shows a cross-sectional view of the coke oven 1. The repair machine 5 is on the first track 1 to repair the furnace wall, and the second track 2 is on the furnace wall to repair the furnace wall. It shows the state.
The repair machine 5 includes a traveling carriage 6 and a thermal spraying device 7 mounted on the upper surface thereof. The thermal spraying device 7 includes a thermal spray lance 8 for spraying a repairing agent such as mortar. The thermal spray lance 8 is undulating and telescopic. The undulation structure of the thermal spray lance 8 may be such that the thermal spray lance pivoted by a pin or the like on the gantry is raised and lowered by a hydraulic cylinder.
The expansion structure of the thermal spray lance 8 may be configured such that a multistage cylinder is inserted into a telescope, and each cylinder is expanded or contracted by a hydraulic cylinder or a wire expansion / contraction mechanism. The stroke when the thermal spray lance 8 is extended extends from the first track 1 or the second track 2 slightly beyond the vicinity of the center of the furnace, and when the repair agent is sprayed from both the coke side and the machine side, The entire surface can be repaired.
[0011]
FIG. 4 shows a traveling cart 6 portion of the repair machine 5. The traveling carriage 6 has a rectangular carriage frame 11 in a plan view, and traveling wheels 12 are attached to the four corners of the lower surface at both ends in the longitudinal direction, and are driven by a motor 13 installed on the carriage frame 11. . In addition to the thermal spraying device 7, a trap 14 and various auxiliary machines are installed on the carriage frame 11. A jack device 20 is attached to the center of the lower surface of the carriage frame 11.
[0012]
Below, the jack apparatus 20 is demonstrated based on FIGS.
The jack device 20 includes four hydraulic jacks 21. The cylinders of the four hydraulic jacks 21 are coupled to the swing frame 22a, and the piston rod is coupled to the lifting frame 22b. Reference numeral 23 denotes a cylindrical guide post, and the revolving frame 22a is integrally coupled to the outer cylinder 23a, and the elevating frame 22b is integrally coupled to the cylinder 23b. The elevating frame 22b holds the piston rod of each hydraulic jack 21 while expanding and contracting with respect to the revolving frame 22a.
The hydraulic jack 21 is extended and contracted by a hydraulic source (not shown) and an operating device mounted on the carriage frame 11. When the hydraulic jack 21 is extended, the traveling carriage 6 is lifted as shown in FIG. 6, and when the hydraulic jack 21 is contracted, the traveling carriage 6 is lowered as shown in FIG. 3 is grounded.
[0013]
At the bottom of the guide post 23, a fall prevention hook 24 is rotatably attached by a support pin 25. One end of a push / pull control cable 26 is connected to the base of the fall prevention hook 24, and the other end is connected to an operation lever 27 on the carriage frame 11. For this reason, when the operation lever 27 is manually operated, the push-pull control cable 25 is pushed and pulled, and the fall prevention hook 24 can be changed in posture between the non-engagement position and the engagement position.
28 is a fall prevention pivot bracket, the third track 3 first, and is fixed in a pit 29 formed at the center of the intersection difference portion between the second track and second. As shown in FIG. 6, the hook 24 can be prevented from overturning the repairing machine 5 in a state where the traveling carriage 6 is lifted by engaging with the overturn-preventing bracket 28.
[0014]
A swing bearing 30 is attached between the upper surface of the swing frame 22a and the lower surface of the carriage frame 11. The slewing bearing 30 is a known bearing in which an inner ring portion 31 and an outer ring portion 32 rotate relative to each other. The inner ring portion 31 is fixed to the carriage frame 11 and the outer ring portion 32 is fixed to the slewing frame 22a. The carriage frame 11 is manually turned, or although not shown, a pinion supported on the carriage frame 11 side is engaged with a ring gear attached to the outer periphery of the outer ring portion 32, and the pinion is rotated by a motor or the like. You may make it turn by.
[0015]
The repair machine 5 in the present embodiment may be stopped after traveling on the first and second tracks 1 and 2 and turning the spraying device 7 by 90 ° when the spraying lance 8 is directed into the furnace. When the second track 1 or 2 enters or exits the third track, the bogie frame 11 only needs to be turned 90 °. Therefore, a turning angle restricting stopper is provided between the bogie frame 11 and the turning frame 22a. Yes. As shown in FIGS. 6 to 7, the stopper is an upper surface of the swing frame 22 a, two stop bars 41 arranged in contrast with each other outside the swing bearing 30, and inside the swing bearing 30. And two stop blocks 42 arranged in a point contrast manner. A cushion rubber 43 is attached to both ends of the stop bar 41, and a cushion rubber 43 is also attached to the stop block 42. A 90 ° turning angle is provided between the cushion rubbers 43 of each stop bar 41. Further, there is a turning angle of 180 ° between the cushion rubbers 43 of the two stop blocks 42.
[0016]
On the other hand, the carriage frame 11 is connected to stopper plates 45 and 46 at both ends of a link 44 that swings around the center. By manually operating a lever 47 connected to the link, the carriage frame 11 is moved. The stopper plate 45 outside the center and the stopper plate 46 inside are alternately raised and lowered.
The outer stopper plate 45 hits the four cushion rubbers 43 of the stop bars 41, 41 so as to hit the inner stopper plate 43. Therefore, if one of the stopper plates 45 and 46 is selected and lowered according to the turning direction of the carriage frame 11, the turning angle of the carriage frame 11 can be always restricted to 90 °.
[0017]
Furthermore, in this embodiment, the lock mechanism shown in FIGS. This locking mechanism is composed of a lock pin 51 on the carriage frame 11 side and pin receiving brackets 52 provided at 90 ° intervals on the upper surface of the turning frame 22a. The lock pin 51 is inserted into a sliding hole 53 formed in the carriage frame 11 and can be pulled up or pushed down by operating the handle 54. Therefore, if the lock pin 51 is inserted into the pin holder 52, the carriage frame 11 is restrained from turning relative to the turning frame 22a, and if the lock pin 51 is removed, the carriage frame 11 can turn freely. Can do.
[0018]
FIG. 5 shows a state in which the jack 21 of the jack device 20 is contracted, and the lower end of the jack 21 floats from the floor. For this reason, the traveling vehicle 6 can travel on the tracks 1, 2 and 3 by the traveling wheels 12.
Figure 6 is the third track 3 and the first, exchange difference portion of the second track and second, a state of being extended the jack 21. In this case, since the traveling wheels are levitated from the tracks 1, 2, and 3, the bogie frame 11 can be turned.
If the fall prevention hook 24 is engaged with the fall prevention bracket 28, the traveling carriage 6 can be prevented from falling during turning.
Further, since the turning position of the bogie frame 11 is accurately regulated by the stopper, and the position after turning is restricted by the lock mechanism, the turning position does not fluctuate unexpectedly.
[0019]
Figure 8 shows the retracting action of the repair machine 5, the first trajectory 1 and at the intersection difference portion X of the third track, a state in which the traveling carriage 6 is pivoted 90 °, and the second track 2 and the third track in exchange difference portion Y, the traveling carriage 6 is state pivoted 90 ° are shown. Thus, each intersection difference section X, are possible turning of the traveling carriage 6 in Y, and since nor the spray lance 8 interfering with if the furnace wall Oke is contracted, repair machine 5 rapidly the It is possible to retreat into the three tracks 3 and return from the third track 3 to the first and second tracks 1 and 2. Z indicates a position where the repairing machine 5 is retracted to the third track 3.
For this reason, in this embodiment, when the guide vehicle or the pusher vehicle has traveled on the first track 1 or the second track 2, the repair machine 5 promptly retreats to the third track 3, or the first and second tracks. Since it suffices to retreat to the ends of the two tracks 1 and 2, useless time for retreat is reduced, and the productivity of the coke oven is improved.
Further, even when the traveling carriage base 6 traverses the third track 3, the traveling carriage 11 travels with the longitudinal direction of the traveling frame 11 turned in the direction along the third track 3. The distance is long and the running posture is stable. For this reason, even if the high-temperature spraying device 7 is mounted, there is no danger that the traveling carriage 6 falls.
[0020]
Next, an embodiment of the invention of claim 2 will be described. FIG. 9 is a sectional view of repair equipment according to an embodiment of the invention of claim 2.
As shown in FIG. 9, the first track 1 is installed on the coke side (the left side in the figure) of the coke oven F, but, like the conventional coke furnace, the first side 1 is located on the machine side (the right side in the figure). Two tracks are not installed. A third track 3 is installed on the intermediate deck 4.
An extruder running track 61 is installed on the ground surface on the machine side, and a repair machine carriage 62 runs.
The repair machine cart 62 is equipped with the repair machine 5 and can travel from one end of the coke oven F to the other end. The repair machine 5 travels on the third track 3 and transfers to the repair machine carriage 62.
In this embodiment, when the guide vehicle has traveled on the first track 1, the repair machine 5 may travel to the end of the first track 1 or enter the third track 3 of the intermediate deck 4. You just need to retreat to the near side. For this reason, the time required for retreating can be shortened and the operation can be performed smoothly. When the coke oven is repaired, the first track 1 can be used, or the repair machine carriage 62 can be used to repair almost the entire surface.
[0021]
【The invention's effect】
According to the invention of claim 1, when the guide vehicle or the extruder has traveled on the first track or the second track, the repair machine travels to the end of the first track or the second track, Since it suffices to enter the third track, the time required for evacuation is shortened and the operation can be smoothly performed. In addition, since the repair machine can adopt an orbital running type, it can be equipped with a thermal spraying device with sufficient capacity without being restricted by the equipment weight. For this reason, repair ability is also improved. Further, the traveling of the traveling carriage is stable, and the spraying device does not interfere with the furnace wall during turning, so that the intermediate deck can be smoothly entered and exited.
According to the invention of claim 2, when the guide vehicle has traveled on the first track, the repair machine may travel to the end of the first track or enter the third track of the intermediate deck, whichever is closer. You only need to retreat to the direction. For this reason, the time required for retreating can be shortened and the operation can be performed smoothly. Further, the traveling of the traveling carriage is stable, and the spraying device does not interfere with the furnace wall during turning, so that the intermediate deck can be smoothly entered and exited.
According to the invention of claim 3, when lifting the repair machine with a jack device and keep engaged the fall prevention hook fall prevention receiving brackets on the ground side, it is possible to prevent the overturning of the repair machine, the road trajectories You can safely change direction at the intersection .
[Brief description of the drawings]
1 is a plan view of a coke oven repair facility according to an embodiment of the invention of claim 1;
FIG. 2 is a side view of the coke oven repair facility.
FIG. 3 is an explanatory diagram showing repair work of the repair machine.
FIG. 4 is a side view of a traveling carriage portion of the repair machine.
FIG. 5 is a front view of a traveling carriage in a traveling state.
FIG. 6 is a front view of the traveling carriage at the time of turning.
FIG. 7 is a partially omitted plan view of a traveling carriage.
FIG. 8 is an explanatory diagram of a retreat operation of the repair machine.
9 is a cross-sectional view of a coke oven repair facility according to an embodiment of the invention of claim 2. FIG.
FIG. 10 is an explanatory diagram of a repair machine according to a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 1st track 2 2nd track 3 3rd track 4 Central deck 5 Repair machine 6 Running cart 7 Thermal spray device 11 Cart frame 20 Jack device 21 Hydraulic jack 24 Fall prevention hook 28 Fall prevention bracket 30 Slewing bearing

Claims (3)

A coke oven repair facility in which a plurality of furnace groups are arranged in series,
A first trajectory installed from one end of the coke oven to the other in co grasses id,
A second track installed from one end of the coke oven on the machine side to the other end;
A third track installed in an intermediate deck between adjacent furnace groups, intersecting the first track and intersecting the second track , and connecting both tracks ;
It consists of a repair machine that runs on each track,
The repair machine comprises a traveling carriage provided with traveling wheels in the longitudinal direction and a thermal spraying device for repairing a furnace wall mounted on the traveling carriage,
The traveling carriage includes a jack device that lifts the traveling carriage, and a turning bearing that turns the traveling carriage on the jack device,
The said thermal spraying apparatus is equipped with the thermal spraying lance which can be raised and retracted freely, The coke oven repair equipment characterized by the above-mentioned. A coke oven repair facility in which a plurality of furnace groups are arranged in series,
A first track installed from one end of the coke oven to the other end at the coke side;
A repair machine cart that runs on an extruder running track installed from one end to the other end of the coke oven on the ground surface of the machine side,
Is disposed to the intermediate deck adjacent Rodin, a third track which is connected across for the first track, it travels the first raceway and third raceway, and is mounted on the repair machine carriage And a repair machine that moves
The repair machine comprises a traveling carriage provided with traveling wheels in the longitudinal direction and a thermal spraying device for repairing a furnace wall mounted on the traveling carriage,
The traveling carriage includes a jack device that lifts the traveling carriage, and a turning bearing that turns the traveling carriage on the jack device,
The said thermal spraying apparatus is equipped with the thermal spraying lance which can be raised and retracted freely, The coke oven repair equipment characterized by the above-mentioned. The intersection of the trajectories which intersect each other, fall prevention pivot bracket is installed,
The coke oven repair facility according to claim 1 or 2, wherein a traveling cart of the repair machine is provided with a fall prevention hook that is detachably engaged with the fall prevention bracket.

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