JP2017137445A - Heavy equipment carriage carrying heavy equipment for disassemble of coke oven combustion chamber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heavy equipment carriage loading with heavy equipment for disassemble and running on a coke oven to operate safely using relatively cheap heavy equipment for disassemble to disassemble walls and a ceiling of the coke oven.SOLUTION: A heavy equipment carriage 5 runs and loads with heavy equipment for disassemble 4 to disassemble walls 3 and a ceiling consisting of refractory bricks when the walls 3 and the ceiling of a combustion chamber of a coke oven are repaired. The heavy equipment carriage 5 for combustion chamber disassemble comprises: wheels 8 running on rails 6 for coal-charging car provided on a coke oven; a caterpillar tread passage 9 enabling caterpillars of heavy equipment for disassemble 4 to run by itself to right angle direction of the rails 6 for coal-charging car; and a fall prevention stopper 11 provided in a longer direction end of the caterpillar tread passage 9 to prevent falling of the heavy equipment for disassemble 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a carriage that travels by loading heavy equipment (hereinafter referred to as demolition heavy equipment) for dismantling the wall and ceiling made of refractory bricks when repairing the wall and ceiling of a combustion chamber of a coke oven. Is.

  FIG. 4 is a horizontal sectional view schematically showing a main part of the coke oven, and FIG. 5 is a perspective view schematically showing an example of a combustion chamber wall.

  In general, as shown in FIG. 4, a coke oven has a carbonization chamber 2 for carbonizing coal, a combustion chamber 1 for burning fuel gas, and a heat storage chamber for preheating fuel gas and combustion air using the residual heat of combustion exhaust gas ( Combustion chambers 1 and carbonization chambers 2 are alternately arranged. That is, as shown in FIG. 5, the combustion chamber 1 is formed inside the wall 3 of the refractory brick that separates the carbonizing chambers 2 adjacent to each other.

  During the operation of the coke oven, coal is charged into the carbonization chamber 2 and further subjected to dry distillation by the combustion heat generated in the combustion chamber 1, and then the obtained coke is discharged from the carbonization chamber 2 repeatedly. As a result, the wall 3 formed of refractory bricks is worn out, and there arises a problem that combustion exhaust gas and unburned fuel gas leak out from the combustion chamber 1 into the carbonization chamber 2.

Therefore, the wall 3 of the combustion chamber 1 must be repaired as appropriate. However, if all the combustion chamber 1 and the carbonization chamber 2 of the coke oven are stopped and repaired, the production of coke will be hindered. Therefore, while operating the coke oven, only the combustion chamber 1 to be repaired is stopped for repair. The repair procedure is as follows:
(A) The wall 3 and ceiling of the combustion chamber 1 to be repaired are dismantled and taken out of the furnace.
after that,
(B) It is roughly divided into a two-stage process of constructing a new wall 3 and ceiling.

  Conventionally, in the process (A), a heavy dismantling machine having a long arm that can bend and stretch freely has been used (see Patent Document 1). Since a heavy demolition machine is not a general-purpose construction machine and is expensive, there is a problem that the construction cost increases by using the demolition machine.

  In addition, in order to use the dismantling machine disclosed in Patent Document 1, a space for bending and extending a long arm from a vehicle main body traveling on the ground and turning is required. Therefore, the dismantling machine cannot be used in a location where it is difficult to secure a large space around the coke oven. In that case, the worker is forced to dismantle the wall and ceiling manually, and it takes a long time to dismantle and carry out. Moreover, since the working environment is high temperature, equipment for ensuring the safety of workers is required, which causes an increase in construction costs.

Japanese Unexamined Patent Publication No. 2015-13937

  The present invention eliminates the problems of the prior art, and when disassembling the wall and ceiling of the combustion chamber, in order to perform a highly safe operation using a relatively inexpensive demolition heavy machine, The purpose is to provide a cart (hereinafter referred to as a heavy machinery cart) that travels on a coke oven.

  In order to disassemble the wall and ceiling of the combustion chamber of the coke oven, the present inventor needs to operate a heavy machine for dismantling above the ceiling. Focused on rails. The rails for running the charcoal vehicle will not be removed even if the work in the above step (A) (that is, the work of dismantling the wall and ceiling of the combustion chamber to be repaired and carrying it out of the furnace) proceeds and supports the furnace body. It remains in a predetermined position on the upper surface of the ceiling together with the structure (hereinafter referred to as the furnace structure). Therefore, if the heavy equipment for dismantling is transported by the heavy equipment cart that travels on the rails for running the coal car, it can be efficiently transported to the place where the dismantling work is performed.

  In addition, a heavy machine for dismantling having a total weight of less than 6 tons is cheaper than a heavy weight dismantling machine disclosed in Patent Document 1, and even if it is loaded on a heavy equipment carriage and travels on a rail for traveling a charcoal vehicle, The load can be sufficiently supported by the furnace structure.

The present invention has been made based on such knowledge.
That is, the present invention is a heavy equipment cart that travels by loading a demolition heavy machine for dismantling the wall and ceiling made of refractory bricks when repairing the wall and ceiling of the combustion chamber of the coke oven. Wheels that run on the rails for running the charcoal vehicle installed on the furnace, caterpillar passages that allow the caterpillar of the demolition heavy machinery to run in the direction perpendicular to the rails for the charcoal vehicle traveling, and the fall of the heavy machinery for demolition In order to prevent this, a heavy machine cart for dismantling the combustion chamber having a fall prevention stopper installed at the longitudinal end of the caterpillar passage.

  The heavy machinery bogie of the present invention preferably has a dropout prevention guide for preventing the caterpillar from dropping off at the end in the width direction of the caterpillar passage. Moreover, it is preferable to have a motor for driving the wheels.

  ADVANTAGE OF THE INVENTION According to this invention, the heavy machine for a demolition can be easily conveyed to the place which disassembles the wall body and ceiling of the combustion chamber of a coke oven. As a result, the dismantling work can be performed efficiently and safely, and the construction period can be shortened and the construction cost can be reduced.

FIG. 3 is a vertical sectional view schematically showing an example of carrying out a dismantling operation by loading a dismantling heavy machine on the heavy equipment cart of the present invention. It is a top view which reduces and shows the ceiling of a coke oven. It is a top view of the heavy-duty trolley | bogie shown in FIG. It is a horizontal sectional view which shows typically the principal part of a coke oven. It is a perspective view which shows the example of the wall body of FIG. 4 typically.

  FIG. 1 is a vertical sectional view schematically showing an example of carrying out a dismantling operation by loading a heavy machine for dismantling on the heavy equipment cart of the present invention. In FIG. 1, an extruder and a fire extinguisher attached to the coke oven are not shown, but for convenience, the right side in FIG. 1 is the extruder side and the left side is the fire extinguisher side. FIG. 2 is a plan view showing the ceiling of the coke oven in a reduced scale. FIG. 3 is a plan view of the heavy equipment cart shown in FIG. An arrow A in FIG. 1 indicates the traveling direction of the heavy machine 4 for dismantling, and an arrow B in FIG.

The demolition heavy machine 4 used in the demolition work is lifted from the ground by a crane (not shown) and placed on the caterpillar passage 9 of the heavy machine cart 5 (see FIG. 1). The heavy equipment cart 5 is provided with two caterpillar passages 9, and the distance between the caterpillar passages 9 coincides with the distance between the two caterpillars of the dismantling heavy machine 4, and the caterpillar passage 9 is in contact with the rail 6 for running the charcoal vehicle. Are fixed by the beam member 10 so as to form a right angle. Accordingly, the caterpillar passage 9 and the beam member 10 form a rectangular space.
In this way, the two caterpillars of the dismantling heavy machine 4 can travel on the caterpillar passage 9 respectively.

  As already explained, in the repair work of the coke oven, the combustion is stopped only in the combustion chamber to be repaired while the coke oven is being operated. Therefore, even after the wall and ceiling of the combustion chamber to be repaired are disassembled and carried out of the furnace, the furnace structure 7 is left without being disassembled. As shown in FIG. 2, in the place 13 where the combustion chamber is disassembled, the bottom of the rail 6 for the charcoal vehicle is hollow, but since the rail 6 for the charcoal vehicle is fixed to the furnace body structure 7, The heavy machine cart 5 loaded with the demolition heavy machine 4 can be supported.

  Here, the demolition heavy machine 4 means a general-purpose heavy machine (for example, a hydraulic excavator, a jumbo, etc.) having a total weight of 6 tons or less. By using these heavy machinery 4 for dismantling, it contributes to the reduction of the construction cost of a dismantling operation.

The heavy equipment cart 5 includes wheels 8 for traveling on the coal-car traveling rail 6. When the wheel 8 is not attached with a drive device, the worker pushes the heavy equipment cart 5 to travel the coal-car traveling rail 6. In order to reduce the load on the worker, it is preferable to attach a drive device to the wheel 8. The drive device for the wheel 8 uses a conventionally known device such as a motor (for example, an electric motor, a hydraulic motor, etc.).
Thus, the heavy equipment cart 5 moves to the place of the combustion chamber where the heavy equipment 4 for dismantling is loaded and dismantled at the standby place 14.

  In the dismantling work, the arm of the dismantling heavy machine 4 is lowered downward from the rectangular space formed by the caterpillar passage 9 and the beam member 10 and the outside of the heavy equipment cart 5 to dismantle the wall body 3 and the ceiling. The crushed lump generated by the demolition work is stored in a bucket by the heavy machine 4 for demolition, and lowered from the coke oven to the ground using a crane.

  During the dismantling operation, the dismantling heavy machine 4 travels along the caterpillar passage 9 in the longitudinal direction thereof (that is, the direction perpendicular to the rails 6 for the loaded coal truck). A fall prevention stopper 11 is provided at the end of the fire extinguishing vehicle side) to prevent the heavy equipment 4 for dismantling from falling.

  When the path of the demolition heavy machine 4 deviates from the direction perpendicular to the rails 6 for running the coal car, the caterpillar passage 9 may drop off in the width direction. Therefore, a dropout prevention guide 12 is provided at the end of the caterpillar passage 9 in the width direction to prevent the dropout. FIG. 3 shows an example in which one drop prevention guide 12 is installed on the outer side in the width direction of each caterpillar passage 9. Although illustration is omitted, one drop prevention guide 12 may be installed inside each of the caterpillar passages 9 in the width direction. Alternatively, dropout prevention guides 12 may be installed on both sides of the caterpillar passage 9 in the width direction.

  In this way, the wall body 3 and the ceiling are disassembled and carried out of the furnace (step (A) above). Since the arm of the demolition heavy machine 4 does not reach the lower part of the wall 3, the worker performs the dismantling work. However, the use of the demolition heavy machine 4 on the upper portion of the wall 3 eliminates the need for the worker to perform work at a high place in a high-temperature environment, so that the safety of the dismantling work is improved. Moreover, the construction period can be shortened and the construction cost can be reduced by disassembling the reach of the arm with the dismantling heavy machine 4.

  The work of disassembling all the walls and ceiling of one combustion chamber of a coke oven (furnace height 6m, furnace length 34 flu) and carrying it out of the furnace (step (A) above) using the heavy equipment cart of the present invention I did it. Two heavy-duty carts with a total weight of 4.5 tons as excavators were loaded as heavy machinery for dismantling, and the walls within the reach of the ceiling and arm were dismantled. The worker dismantled the lower part of the wall. This is an invention example.

On the other hand, conventionally, an operator dismantled and removed the wall and ceiling (step (A) above). This is a conventional example.
When the number of days required for the process (A) was compared between the invention example and the conventional example, the required number M of the invention example was about 1/3 of the required number N of the conventional example. .

DESCRIPTION OF SYMBOLS 1 Combustion chamber 2 Coking chamber 3 Wall body 4 Heavy machinery for dismantling 5 Heavy equipment cart 6 Rail for charcoal vehicle 7 Furnace body structure 8 Wheel 9 Caterpillar passage
10 Beam members
11 Fall prevention stopper
12 Fallout prevention guide
13 Place where the combustion chamber was dismantled
14 Waiting place

Claims (3)

  When repairing the walls and ceiling of the combustion chamber of the coke oven, a heavy equipment cart that travels with heavy equipment for dismantling for dismantling the wall and ceiling made of refractory bricks, installed on the coke oven A wheel that travels on the rails for running the coal car, a caterpillar passage that enables the caterpillar of the heavy machine for dismantling to self-propel in a direction perpendicular to the rails for the car of coal traveling, and a fall of the heavy machine for dismantling A heavy equipment cart for dismantling a combustion chamber, comprising a fall prevention stopper installed at a longitudinal end portion of the caterpillar passage for preventing the fall.   The heavy equipment cart for dismantling a combustion chamber according to claim 1, further comprising a dropout prevention guide for preventing the caterpillar from dropping off at an end in a width direction of the caterpillar passage.   The heavy machine cart for dismantling the combustion chamber according to claim 1 or 2, further comprising a motor for driving the wheels.

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