JP2019167450A - Car stop structure for larry car of coke oven - Google Patents

Abstract

To provide a car stop structure for a larry car 4 of a coke oven, that does not require foundation reinforcement or has minimum strength sufficient to stop the larry car 4 during renewal work of the coke oven, that can reduce construction costs by shortening the construction period, that can avoid production loss in the coke oven, that can prevent deterioration of an old coke oven, and that can be easily removed after renewal work.SOLUTION: The car stop structure for the larry car of the coke oven comprises a cross beam 9 that is passed between a plurality of existing pillars 10 supporting a coal tower, a cross beam retainer 12 that is provided on the plurality of columns 10 passing the cross beam 9 to support both ends of the cross beam 9 in the plurality of columns 10, and a block 12a that is provided at the end of the cross beam retainer 12 to prevent horizontal movement of the cross beam, and further, comprises a car body stopper 7 that is installed on the cross beam 9.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a stop structure for a coal-cooked car of a coke oven.

  A coke oven is a carbon storage chamber for carbonizing coal, a combustion chamber for burning fuel to supply heat to the carbonization chamber, and a heat storage for exchanging heat between combustion exhaust gas and fuel gas from the combustion chamber or combustion air. The chamber is mainly composed of three parts. In the coke oven, a combustion chamber and a carbonization chamber are connected to each other to form one kiln, and a plurality of kilns (for example, 50 kilns) are gathered in the direction of the kiln to form a kiln.

  For example, as shown in FIG. 1, the plurality of furnace groups 1 are formed on both sides of a coal tower 2 for temporarily storing coal before coal loading (coal before carbonization). 1 shares one coal tower 2.

  Above the inside of the coal tower 2, a coal tank 3 is provided, and the coal before dry distillation is loaded from the coal tank 3 onto the charging hopper of the coal-coating vehicle 4 waiting under the coal tower 2. The coal loading vehicle 4 filled with coal in the charging hopper travels on the rail 5 laid on the top of the coke oven, stops at a predetermined carbonization chamber 14 of each furnace group 1 and charges the coal into the carbonization chamber 14 from above. To do. And the coal charged into the carbonization chamber 14 from the coal loading vehicle 4 is dry-distilled by being heated by the heat of the combustion chamber 15 to be coke.

  A sturdy deck 6 is provided at the end of the coke oven, and the rail 5 is laid to this end. In the terminal part on this deck 6, it has a vehicle stop structure which provided the vehicle body stopper 7 which prevents derailment from the rail 5 and fall of the charcoal vehicle 4 (for example, refer patent document 1 etc.).

Japanese Utility Model Publication No. 6-85340

  By the way, when the coke oven is operated for a period exceeding 20 to 30 years and the coal dry distillation and coke discharge are repeated, the bricks forming the carbonization chamber 14 and the combustion chamber 15 deteriorate and collapse. For this reason, renewal work is carried out to remove the deteriorated brick wall and set up a new coke oven. In this renewal work, there is a method of dismantling and renewing all the furnace groups 1 on both sides of the coal tower 2 at the same time. However, in general, in order to minimize the effects of reduced production (coke, gas, chemical products, etc.) Often conducted in groups.

  For example, as shown in FIG. 2, the decommissioning side furnace group (from the first kiln to the 50th kiln, hereinafter referred to as the demolition side A coke oven) indicated by the two-dot chain line is demolished. The other side of the operating side furnace cluster (from the 51st kiln to the 100th kiln, hereinafter referred to as the operating side B coke oven) is left in the operating state. When the renewal work of the dismantling side A coke oven is completed and the operation becomes possible, the dismantling of the operating side B coke oven is started. At this time, the coal tower 2 is used as it is without being updated. In this way, by disassembling and renewing each coke oven on one side of the coal tower 2, during the renewal work of the coke oven, the supply of coke to the blast furnace and the decrease in COG (coke oven gas) supply to the site are minimized. We can continue the operation that we restrained.

  In such a coke oven renewal construction (pad-up, reconstruction), as a safety measure, for example, the position shown in FIG. 2, so that the coal-mounted vehicle 4 does not fall from the coal tower 2 to the dismantling side A coke oven. In addition, it is necessary to install the vehicle body stopper 7.

In this case, it is necessary to install the vehicle body stopper 7 in the coal tower 2 or in an intermediate portion 80 between the coal tower 2 and the dismantling side A coke oven. Regardless of the construction of the demolition side A coke oven, the coal supply from the coal tower 2 is always in operation, so the construction of the coal tower 2 main body is the most difficult facility to secure the construction time.
Further, the rail 5 (floor surface 8 of the coal tower 2) and the intermediate portion 80 laid on the coal tower 2 are not structured to install the vehicle body stopper 7 at a place where the vehicle body stopper 7 is fixed. Strength (strength) is insufficient to receive all the collision energy of the coal-coating vehicle 4 exceeding, and reinforcement is required.

  Assuming that the vehicle body stopper 7 is attached to the intermediate portion 80, the portion directly below the intermediate portion 80 corresponds to a storage space for road tool equipment for furnace body maintenance. Since the place is weaker than the place, the coal-equipped vehicle 4 cannot be completely stopped without reinforcement.

  Therefore, in order to receive impact energy applied to the vehicle body stopper 7 at the floor surface 8 of the coal tower 2 or at the intermediate portion 80, reinforcement by an independent column connected from the basement floor base concrete to the furnace top is required. In other words, large-scale foundation reinforcement work is required from the basement, 1FL (change valve chamber level), 2FL (platform level), and the top of the furnace. Naturally, in order to secure the construction period necessary for the foundation reinforcement work, a long-term plan using the monthly regular repair date (coke oven maintenance date for which coke production is stopped for several hours) before the renewal work, etc., has been implemented for several months. There must be.

As a result of the examination, the foundation reinforcement work must be performed during the normal operation of the coke oven, and the coal tower 4 has a high frequency of passage to the coal tower 2 and it is not possible to have a continuous effective construction time. It seems quite low and almost impossible.
Next, as a method of foundation reinforcement work that reduces coke production, partial reinforcement work is performed on a regular monthly basis, and this may be repeated to complete the foundation reinforcement work over a relatively long construction period. . However, the foundation reinforcement work must be carried out systematically for several months or more than a year from the expected start date of the renewal work, and the construction efficiency is poor and the construction quality is inadequate for the high construction cost. It is a method with many problems.

  As a result, the time when the foundation reinforcement work can be performed is after the start of the renewal work. Even in that case, the operation of the coke oven stops because the coal tower 2 cannot be used until the dismantling side A coke oven as well as the operation side B coke oven is finished with the foundation reinforcement work and the vehicle body stopper 7 is attached. If the coke oven is shut down, there will be a significant production / cost impact such as energy shortage countermeasures. In addition, when the vehicle body stopper 7 is installed at a location off the coal tower 2 such as the intermediate portion 80, the foundation reinforcement range is further widened, so that the construction period is considerably long.

  Unexpected restrictions such as long-term coke oven shutdown, coal car 4 traffic restrictions, and coal tower 2 usage restrictions cause coke production impact (reduction). Prior to the renewal work, repeating the operation and stoppage of the coke oven in order to achieve both basic reinforcement work and coke production will cause further deterioration of the old coke oven.

  Furthermore, if it is going to absorb the impact energy at the time of the charcoal vehicle 4 stopping by the rail 5 and the foundation of the rail 5, the part which fixes the vehicle body stopper 7 will become large. If the coal supply position of the coal tower 2 (the number and arrangement of the coal tanks 3 already provided) is not changed, the part for fixing the enlarged vehicle body stopper 7 is the dismantling side A coke oven in the coal tower 2. It is provided outside the coal supply position on the side or outside the coal tower 2 on the dismantling side A coke oven side. In that case, since the part which fixes the enlarged vehicle body stopper 7 protrudes to the demolition side A, the space for demolition work of the demolition side A coke oven becomes narrow. On the other hand, in the case where the space for construction is widened, construction is not achieved unless operation restrictions (reduction of coal tank 3 that can be fed with coal) are not allowed.

In the first place, the vehicle body stopper 7 is a temporary one during the renewal work period, and must be removed when the renewal work is completed. When the renewal work for the operation side B coke oven is continued after the completion of the renewal work for the dismantling side A coke oven, the vehicle body stopper 7 installed for the renewal work for the dismantling side A coke oven cannot be used. Again, foundation reinforcement work for attaching the same vehicle body stopper 7 to the working side B coke oven side is required. As described above, when the coke oven is renewed, the car stopper structure in which the foundation reinforcement work is performed and the body stopper 7 is installed is an uneconomical facility for the construction difficulty, construction period, and construction cost. is there.
Therefore, from the viewpoint of the construction period and cost effectiveness, it is desirable to omit the foundation reinforcement work for installing the vehicle body stopper 7 which is a temporary one during the renewal work of the coke oven.

  The present invention does not perform foundation reinforcement work during renewal work of the coke oven, or has sufficient strength to stop the coal-mounted vehicle 4 even if reinforcement is minimized, and can shorten the construction period and reduce construction costs, The purpose of the present invention is to provide a stop structure for a coke oven loaded with a coke oven that can prevent a decrease in coke oven production, suppress deterioration of an aging coke oven, and can be easily removed after renewal work.

This invention solves said subject and the place made into the summary is as follows.
(1) A transverse beam is passed between a plurality of existing pillars that support the coal tower, and a transverse beam support that supports both ends of the transverse beam in the plurality of pillars is provided on the plurality of pillars that pass the transverse beam. A stop structure for a coke oven charcoal vehicle, wherein a block for preventing horizontal movement of the horizontal beam is provided at an end of the horizontal beam, and a vehicle body stopper is further installed on the horizontal beam.
(2) A coke oven loaded coal car according to (1), wherein a column is provided to integrate a lower part of the horizontal beam and a floor plate or rail laid on the floor of the coal tower. Car stop structure.

  According to the present invention, the structure for stopping the coke oven 4 in the coke oven has sufficient strength, the construction period can be shortened, the construction cost can be reduced, the reduction in coke oven production is avoided, and the deterioration of the old coke oven is suppressed. be able to. In addition, after the coke oven is updated, it can be easily removed.

It is the figure which showed the operation operation condition of the coal tower 2 and the charcoal vehicle 4 before a coke oven update. It is the figure which showed the operation operation condition of the coal tower 2 and the charcoal vehicle 4 under construction of the demolition side A coke oven. (A) It is the figure shown from the upper surface of the coal tower 2 about the installation position of the cross beam 9 in the stop structure of the coal-cooking vehicle 4 of the coke oven of this invention. (B) It is the figure shown from the elevation of the coal tower 2 about the installation position of the cross beam 9 in the stop structure of the coal-cooking vehicle 4 of the coke oven of this invention. (A) It is CC sectional drawing of Fig.3 (a) which shows the process of installing the cross beam receiver 12. FIG. (B) It is CC sectional drawing of Fig.3 (a) which shows the process of installing the cross beam 9. FIG. (A) It is DD sectional drawing of Fig.3 (a) at the time of installing the lower support | pillar 11a. (B) It is sectional drawing which shows the state which installed the vehicle body stopper 7 in the horizontal beam 9. FIG. It is the figure shown from the elevation shown from the furnace group direction of the coal tower 2 about the detail of the stop structure of the coal-cooking vehicle 4 of the coke oven of this invention.

  As shown in FIGS. 3A and 3B, the coal tower 2 is originally provided with a plurality of columns 10 (made of concrete or steel) for constituting the coal tower 2. For the purpose of supporting the coal tower 2, the pillar 10 is constructed with sufficient strength on the coke oven foundation bottom concrete. Therefore, it was expected to have sufficient strength to support the vehicle body stopper 7 without performing further foundation reinforcement work.

  Therefore, against the impact required to stop the charcoal vehicle 4, the cross beam 9 is passed between the columns 10, and both ends of the cross beam 9 are supported on the column 10 by the cross beam receiver 12 provided with the block 12 a. The strength calculation was performed on the structure in which the vehicle body stopper 7 was installed. The block 12a prevents the horizontal beam 9 from moving horizontally to the dismantling side A. This structure is shown in FIGS. 3 (a) and 3 (b). As a result of calculation, it has been clarified that this structure can sufficiently withstand the collision energy that stops the charcoal vehicle 4.

  In the present invention, by using a sturdy column 10 that originally supports the coal tower 2 as a member for fixing the vehicle body stopper 7, the vehicle body stopper 7 that stops the coal-mounted vehicle 4 with almost no new foundation reinforcement work. Can be installed. Since most of the impact load can be received by the horizontal beam receiver 12 that supports the horizontal beam 9 on the column 10 and the block 12a provided on the horizontal beam receiver 12 that fixes the horizontal direction of the horizontal beam 9, basic reinforcement of the rail 5 and the like can be received. It becomes possible not to perform the construction or to minimize it, and the construction period for installing the vehicle body stopper 7 can be shortened.

Compared to the structure in which the vehicle body stopper 7 installed only on the rail 5 of the charcoal vehicle 4 is fixed by the rail 5 and its foundation, the load of the foundation reinforcement work for reinforcing the rail 5 and its foundation (including concrete) can be reduced. It is reduced, and the fixing method is reduced in size and size.
As a result, the restrictions such as the long-term operation stop of the coke oven for the foundation reinforcement work of the rail 5, the passage restriction of the coal-coating vehicle 4, and the restriction of use of the coal tank 3 of the coal tower 2 are relieved greatly. For this reason, since the coke production influence (reduction) is eliminated and the operation stop of the furnace group 1 is avoided, it is also possible to eliminate the deterioration factor of the aging coke oven.

  Further, when removing after the construction of the dismantling side A coke oven is completed, it is only necessary to remove the cross beam 9 supported by the cross beam receiver 12 fixed to the column 10. Further, the removed horizontal beam 9 can be diverted when the renewal construction of the operation side B coke oven is continued after the completion of the renewal construction of the dismantling side A coke oven. If the present invention is not adopted, a foundation reinforcement work is performed in which a foundation other than the pillar 10 is newly driven in order to fix the vehicle body stopper 7. In that case, the renewal work of the coke oven is completed, and when the car stopper structure with the body stopper 7 is removed, the newly-found foundation piles must be removed, which requires a long construction period and high construction costs. .

  The horizontal beam 9 may be either a structure that can be divided or a structure that can be split on the ground after being assembled on a single structure. When divided, it can be installed in a short construction period just before the suspension of operation of the coke oven to be renewed.

The column 10 provided with the cross beam 9 is preferably the column 10 of the coal tower 2 closest to the dismantling side A coke oven. 3 (a) and 3 (b), FIG. 4 showing the CC cross section of FIG. 3 (a), and FIG. 5 (a) showing the DD cross section of FIG. 3 (a). In addition, the cross beam 9 is provided via a cross beam receiver 12.
As in the case of the coal tank 3 indicated by x in FIG. 2, there are cases in which the coal tank 3 on the dismantling side A coke oven side cannot be used even if the cross beam 9 and the vehicle body stopper 7 are provided in the most dismantling side A coke oven. .

  With reference to FIGS. 3-6 specifically, the structure of each part and the installation procedure of the cross beam 9 are demonstrated as one Embodiment.

  As shown in FIGS. 3, 4, and 5 (a), the horizontal beam receiver 12 provided on the column 10 includes a block 12 a that prevents horizontal movement of the horizontal beam 9, a locking portion 12 b, a block support bracket 12 c, and a fall prevention angle. 12d and a fall prevention angle 12e. The locking portion 12b and the block support bracket 12c constitute a part of the transverse beam receiver 12. The locking portion 12b and the block support bracket 12c are provided at the end portions of the cross beam receiver 12, respectively.

  The block 12 a for preventing the horizontal movement of the horizontal beam 9 has a convex shape formed so as to protrude from the horizontal beam receiver 12 toward the inside of the coal tower 2. The block 12a for preventing the horizontal movement of the horizontal beam 9 is separated from the horizontal beam 9 in order to obtain a mechanism for receiving the impact force of the charcoal vehicle 4 transmitted from the vehicle body stopper 7 and the horizontal beam 9 as a horizontal force. The horizontal beam receiver 12 itself fixed to the column 10 is integrated with the horizontal beam receiver 12 so as to have a size and strength sufficient to receive an impact force by welding or the like.

  The locking portion 12b is in close contact with the surface on the operating side B of the column 10 and prevents the cross beam receiver 12 from moving to the dismantling side A. Further, the horizontal beam receiver 12 is fixed by a locking portion 12b that is in close contact with the surface of the working side B coke oven of the column 10 that supports the horizontal beam 9, and when the coal-mounted vehicle 4 collides with the vehicle body stopper 7, the impact of the horizontal beam 9 occurs. The force is received by the block 12a that prevents the horizontal beam 9 from moving horizontally, and at the same time, the impact force is received by the locking portion 12b.

  The block support bracket 12c serves to prevent the horizontal beam 9 from being released by opening the block 12a that prevents horizontal movement of the horizontal beam 9 by the impact force of the horizontal beam 9 when the coal-coated vehicle 4 collides with the vehicle body stopper 7. It is. If the block support bracket 12c can be installed in close contact with the dismantling side A surface of the pillar 10, the function is the same even if it is not fixed to the pillar 10.

  The fall prevention angle 12d and the fall prevention angle 12e are provided so as to protrude from the transverse beam receiver 12 toward the inside of the coal tower 2 and facilitate installation of the transverse beam 9. The dismantling side A surface of the horizontal beam 9 is supported by the horizontal beam 12a that prevents the horizontal beam 9 from moving horizontally, but the remaining three surfaces of the horizontal beam 9 are guided by the fall prevention angle 12d and the fall prevention angle 12e. Thus, the arrangement of the remaining two surfaces other than the upper surface of the cross beam 9 can be determined. As a result, the cross beam 9 can be supported by three surfaces other than the upper surface.

In order to install the horizontal beam 9 on the column 10, first, the horizontal beam support 12 is provided on the column 10 (FIG. 4A). At this time, the temporary support member 13 may support the horizontal beam receiver 12 so that the installation position of the horizontal beam receiver 12 does not change.
Next, the horizontal beam 9 is suspended by a heavy machine and installed on the horizontal beam receiver 12 (FIG. 4B). It is preferable that the horizontal beam 9 is provided with a column 11 that integrates the lower part thereof and the floor plate 5a or the rail 5 in the coal tower 2. As shown in FIG. 5 (a), when the lower column 11a is provided on the floor 5a side and the horizontal beam 9 is installed, the column 11 provided on the horizontal beam 9 and the lower column 11a may be connected. The column 11 will be described later in detail.

  The horizontal beam 9 and the horizontal beam receiver 12 are not fixed by welding, but are restrained by three surfaces of a fall prevention angle 12d, a fall prevention angle 12e, and a block 12a that prevents horizontal movement of the horizontal beam 9. Preferably not. The reason is that a block 12 a that prevents the horizontal beam 9 from moving horizontally against an impact force is used so that a shearing force or the like does not directly act on the column 10 of the coal tower 2.

  After the horizontal beam 9 is installed, the vehicle body stopper 7 is installed on the horizontal beam 9 as shown in FIG. In addition, in FIG.5 (b), description of the cross beam receiver 12 is abbreviate | omitted.

  In the present invention, as described above, it is preferable that the horizontal beam 9 is provided with the support column 11 (lower support column 11a) that integrates the lower portion thereof with the floor plate 5a or the rail 5 in the coal tower 2. As shown in FIG. 6, the place where the column 11 (lower column 11 a) is provided is preferably directly below the vehicle body stopper 7 and above the rail 5 of the charcoal vehicle 4. In addition, in FIG. 6, description of the rail 5 is abbreviate | omitted.

  The strut 11 (lower strut 11a) receives a lower rotational moment force generated when the coal-equipped vehicle 4 collides with the vehicle body stopper 7, and is a structural member of the cross beam 9 installed on the vehicle body stopper 7 itself or the column 10 of the coal tower 2. Further, by acting a horizontal force on the horizontal beam receiver 12, it plays a role of reducing the impact force on the column 10 itself of the coal tower 2. The column 11 (lower column 11a) and the base plate 5a or the rail 5 may be integrated by welding or a fall prevention anchor, although not shown.

  Further, a chemical anchor not shown in FIG. 6 can be used for fixing the column 10 and the locking portion 12b of the cross beam receiver 12.

  As shown in FIG. 3B, the vehicle body stopper 7 may be provided on the cross beam 9 at a position and structure such that the charcoal vehicle 4 first hits at the time of collision / stop, and a known stopper can be used. For example, a hydraulic damper can be used. The vehicle body stopper 7 is preferably provided with an impact absorbing function.

For example, the following procedure is conceivable as a procedure for carrying out the construction of the stopping structure of the coal-equipped vehicle 4 of the present invention.
Since the horizontal beam receiver 12 fixed to the column 10 of the coal tower 2 does not hinder the traveling range of the coal-equipped vehicle 4, it is attached at a monthly regular repair date at an earlier stage than the discontinuation of the dismantling side A coke oven. The horizontal beam 9 is suspended and installed between the pillars 10 of the coal tower 2 by heavy equipment on the day of the operation suspension or the day before the time when the coal-car 4 is not required to travel to the dismantling side A coke oven.
From the stage at which the horizontal beam 9 is installed, the coal car 4 can be prevented from entering the demolition side A coke oven from the coal tower 2 already.
The support 11 of the horizontal beam 9 and the floor plate 5a or the rail 5 are integrated, and the hydraulic damper of the vehicle body stopper 7 is attached to the horizontal beam 9, and the vehicle stop structure of the coal-equipped vehicle 4 is completed.

  According to the present invention, it is possible to provide the stop structure of the coal-equipped vehicle 4 provided at the time of renewal construction of the coke oven with a short construction period and low construction cost, and it is easy to remove the stop structure after the renewal work. Since the removed cross beam 9 can be used for stopping the operation side B coke oven to be continuously updated, the construction period can be shortened and the construction cost can be reduced as a whole of the coke oven renewal construction.

  DESCRIPTION OF SYMBOLS 1 ... Furnace group, 2 ... Coal tower, 3 ... Coal tank, 4 ... Charcoal car, 5 ... Rail, 5a ... Base plate, 6 ... Deck, 7 ... Car body stopper, 8 ... Floor surface, 80 ... Middle part, 9 ... Cross beam DESCRIPTION OF SYMBOLS 10 ... Column, 11 ... Column, 12 ... Cross beam receiver, 12a ... Block, 12b ... Locking part, 12c ... Block support bracket, 12d ... Fall prevention angle, 12e ... Fall prevention angle, 13 ... Temporary receiving material, 14 ... carbonization chamber, 15 ... combustion chamber, A ... dismantling side, B ... working side

Claims (2)

  A horizontal beam is passed between a plurality of existing columns supporting the coal tower, and a plurality of columns passing the horizontal beam are provided with a horizontal beam support that supports both ends of the horizontal beam in the plurality of columns, and ends of the horizontal beam support And a block for preventing horizontal movement of the cross beam, and further, a vehicle body stopper is installed on the cross beam.   2. A stop structure for a coal-cooked car of a coke oven according to claim 1, further comprising a column that integrates a lower portion of the horizontal beam and a floor plate or rail laid on the floor surface of the coal tower. .