JP4737405B2 - Foundation construction method and foundation structure of lifting device - Google Patents

Description

  The present invention relates to, for example, a foundation construction method and a foundation structure of a lifting device used for dismantling and construction work of a blast furnace furnace body composed of a plurality of furnace body ring blocks.

Conventionally, in the dismantling and construction work of a blast furnace furnace body composed of a plurality of furnace body ring blocks, a suspension device for a fixed or mobile blast furnace furnace body ring block (hereinafter referred to as a “suspension device”). Is used to load and unload the furnace body ring block onto the furnace carriage.
When loading and unloading the furnace body ring block onto the furnace body transportation carriage using a fixed type of lifting device, the weight of each furnace body ring block is about 2000 tons. The supporting load of the plurality of supporting columns is about 600 t when the weight load of each of the supporting columns including the weight of the fixed type lifting device is included, so that the ground strength is insufficient on a normal ground. Therefore, in order to support this high load load, the column foundation surface of the fixed suspension device is reinforced as a foundation of a full-fledged pile structure or a concrete structure with an expanded pressure receiving surface to reduce the installation surface pressure. There is a need to.

On the other hand, when loading and unloading the furnace ring block onto the furnace transport carriage using the mobile suspension device, the mobile suspension device is moved to the furnace body assembly site or the furnace body demolition site. Then load and unload the furnace ring block. For this reason, it is necessary to reinforce the pillar base surface corresponding to the number of furnace body ring blocks, than when loading and unloading the furnace body ring blocks to the furnace carriage using a fixed lifting device, Reinforce a large area.
In addition, even when loading or unloading the furnace ring block to the furnace transport truck using either a fixed or mobile suspension device, the uneven settlement that occurs between the columns is reduced. In order to do so, there was a problem that a large amount of cost and many processes were required for the foundation reinforcement work.

  In order to solve this problem, the basic reinforcement method described in Patent Document 1 is used. This foundation reinforcing method is used in a suspension device 1 having a plurality of columns 6 and horizontal beams 8 as shown in FIG. 11, and first, as shown in FIG. In the lifting position, the column slab 2 constituting the load load distribution support member is laid on the column base surface of the portion where the lifting operation of the furnace ring block 12 is performed by the switching device 1. Next, a loading slab 26 that constitutes a heavy object having a weight equal to or greater than the weight of the furnace ring block is loaded on the upper surface of the column slab 2 to forcibly sink the column base surface in advance. Then, after unloading the loading slab 26 loaded on the upper surface of the support slab 2, the suspension device 1 is mounted on the upper surface of the support slab 2. In addition, in the figure, the ballast which filled the ground part of the support | pillar foundation surface, and was pressed is shown as the code | symbol 22. In FIG.

According to the present invention, it becomes possible to reduce the amount of settlement of the pillar foundation surface between the columns, which occurs when the furnace ring block is lifted by the switching device, to an allowable value or less. It is possible to improve the stability of the suspension device during the construction work, and it is possible to improve the safety of the dismantling of the blast furnace furnace body and the construction work.
Japanese Patent No. 3565123 (FIG. 8)

However, in the invention described in Patent Document 1, the inventor has confirmed that when the loading slab 26 is unloaded from the upper surface of the support slab 2 and a predetermined time elapses, the forcibly settled support foundation surface rises. However, the amount of uplift of this ground is not constant, and a deviation occurs for each subsidence. Therefore, the column base surface after the bulge does not become horizontal, and the level of the column 6 placed on the upper surface of the column slab 2 does not become horizontal. As a result, since the level of the switching device 1 does not become horizontal, the stability of the switching device 1 is lowered, and the safety of dismantling of the blast furnace furnace body and construction work is lowered.
The present invention has been made paying attention to the problems as described above, and by improving the stability of the switching device, it is possible to improve the safety of dismantling of the blast furnace furnace body and the safety of construction work. It is an object to provide a foundation structure and a foundation construction method for an upper device.

In order to solve the above-mentioned problems, the invention described in claim 1 of the present invention is characterized in that the lifting device is mounted on the upper surface of a load load distribution support member laid on a support base surface on which a support device is installed. Before placing a heavy object having a weight equal to or greater than the weight of the lifting device on the upper surface of the load load distribution support member to forcibly sink the support foundation surface; A step of unloading the heavy load from the upper surface of the load load distribution support member after forcibly sinking, and a foundation construction method for a lifting device,
A step of placing a liner member on the upper surface of the load distribution support member, and a step of placing the lifting device on the upper surface of the liner member,
The thickness of the liner member is a thickness that compensates for a deviation between a target reference surface and a reference surface after the heavy load is unloaded from the upper surface of the load distribution support member. Is.

  According to the present invention, the thickness of the liner member that is placed on the upper surface of the load load distribution support member and on which the lifting device is placed on the upper surface is set to the target reference surface and the load load distribution support member. The thickness is compensated for deviation from the reference surface after unloading heavy objects from the upper surface. As a result, the level of the support placed on the upper surface of the liner member becomes horizontal and the level of the lifting device becomes horizontal, so that the stability of the lifting device is improved.

Next, the invention described in claim 2 is the invention described in claim 1, wherein the liner member has a plurality of plate-like members arranged on the upper surface of the load load distribution support member. It is a feature.
According to the present invention, it is easy to set the thickness of the liner member so that the deviation between the target reference surface and the reference surface after unloading the heavy load from the upper surface of the load distribution support member is compensated. Therefore, the work efficiency related to the foundation construction work of the lifting device is improved and the work cost is reduced.

Next, the invention described in claim 3 is the invention described in claim 1 or 2, characterized in that the lifting device is a blast furnace furnace ring block switching device. .
According to the present invention, the level of the support provided in the blast furnace furnace ring block suspension device placed on the upper surface of the liner member becomes horizontal, and the level of the blast furnace furnace ring block suspension device can be made horizontal. Therefore, it becomes possible to improve the stability of the blast furnace furnace ring block suspension device.

Next, among the present inventions, the invention described in claim 4 is a load-load-distribution support member laid on a column base surface on which a column of the lifting device is installed, and a weight more than the weight of the lifting device. And a heavy load that is temporarily loaded on the upper surface of the load load distribution support member and forcibly sinks the support foundation surface,
A liner member disposed between the lifting device and the load load distribution support member;
The thickness of the liner member is a thickness that compensates for a deviation between a target reference surface and a reference surface after the heavy load is unloaded from the upper surface of the load distribution support member. Is.

  According to the present invention, the thickness of the liner member disposed between the lifting device and the load load distribution support member is reduced by removing the heavy object from the target reference surface and the upper surface of the load load distribution support member. The thickness compensates for the deviation from the reference plane after loading. As a result, the level of the support placed on the upper surface of the liner member becomes horizontal and the level of the lifting device becomes horizontal, so that the stability of the lifting device is improved.

Next, the invention described in claim 5 is the invention described in claim 4, characterized in that the reference surface is an upper surface of the load load distribution support member.
According to the present invention, by setting the upper surface of the load load distribution support member as the reference surface, the target reference surface and the load load distribution support member can be moved without moving the load load distribution support member from the support base surface. Since it is possible to measure the deviation from the reference surface after unloading the heavy object from the upper surface, the deviation can be easily measured.

Next, the invention described in claim 6 is the invention described in claim 4 or 5, wherein the liner member has a plurality of plate-like members arranged on an upper surface of the load load distribution support member. It is characterized by this.
According to the present invention, it is easy to set the thickness of the liner member so that the deviation between the target reference surface and the reference surface after unloading the heavy load from the upper surface of the load distribution support member is compensated. Therefore, the work efficiency is improved and the work cost is reduced.

Next, an invention described in claim 7 is the invention described in any one of claims 4 to 6, wherein the load load distribution supporting member is filled in a ground portion of the support foundation surface. It is characterized by being laid above the ballast that has been rolled.
According to the present invention, it is possible to make the support foundation surface flat by rolling the ballast filled in the ground portion of the support foundation surface, such as the particle size and material of the earth and sand constituting the support foundation surface. It becomes possible to make the ground conditions suitable for laying of the load load distribution support member. As a result, the ground portion of the support foundation surface on which the load load distribution support member is laid is stabilized, so that the stability of the lifting device is improved.

Next, the invention described in claim 8 is the invention described in any one of claims 4 to 7, wherein the lifting device is a blast furnace ring block switching device. It is a feature.
According to the present invention, the level of the support provided in the blast furnace furnace ring block suspension device placed on the upper surface of the liner member becomes horizontal, and the level of the blast furnace furnace ring block suspension device can be made horizontal. Therefore, it becomes possible to improve the stability of the blast furnace furnace ring block suspension device.

  According to the present invention, since the level of the suspension device can be leveled, the stability of the suspension device can be improved, and the safety of dismantling and construction work of the blast furnace furnace body is improved. It becomes possible.

Next, embodiments of the present invention will be described with reference to the drawings.
First, the structure of the basic structure of the lifting device of this embodiment will be described with reference to FIGS. 1 to 6. In addition, about the structure similar to FIG.11 and FIG.12, the same code | symbol is attached | subjected and demonstrated. Further, in this embodiment, the case where the lifting device is a mobile blast furnace furnace ring block switching device will be described. However, the lifting device is not limited to this, but a fixed blast furnace. It may be a furnace body ring block suspension device.

As shown in FIGS. 1 and 2, the basic structure of the lifting device of the present embodiment is a blast furnace furnace ring block suspension device (hereinafter referred to as the suspension device 1), a support slab 2, And a liner member 4.
The suspension device 1 includes four support columns 6 and two horizontal beams 8, and can be moved to a place where the furnace ring block 12 needs to be lifted by using the transportation cart 10 for the suspension device. It has become. In FIG. 1, the illustration of the transporting carriage 10 for the changing device is omitted.

  The four struts 6 are respectively arranged at four corners of a flat rectangle fixedly installed on the ground. The horizontal distance on the long span side of each strut 6 is the maximum diameter of the furnace ring block 12 (for example, about 25 m). The furnace ring block 12 can be horizontally loaded. The short span side of each support | pillar 6 is connected by the connection member (not shown). In addition, a rectangular cutout groove 14 is provided at the lower end portion of each column 6, and the lower surface in the horizontal direction connecting the centers on the short span side of the column 6 is opened. The height and width of the rectangular cutout groove 14 are formed so as to be slightly larger than the height and width in a state where the height of the transporting carriage 10 for the switching device is lowered.

The two horizontal beams 8 are passed over the tops on the long span side of the four columns 6, and two lift jacks 16 are arranged on the two horizontal beams 8 so as to be separated from each other. ing. That is, a total of four lift jacks 16 are arranged on the horizontal beam 8.
As shown in FIG. 2, the transporting carriage 10 for the switching device includes a rectangular carriage main body 18 having a flat upper surface, and a plurality of tire-type wheels 20 filled with air are arranged below the carriage main body 18. It can run on the ground. A hydraulic lifting cylinder (not shown) is disposed on the axle of the transporting carriage 10 for the switching device, and the carriage main body 18 can be raised and lowered by driving the lifting cylinder. Each wheel 20 can be turned horizontally by adjusting a turning lever (not shown). For this reason, the transportation cart 10 for the suspension device can freely change the moving direction by turning the wheel 20.

Further, the transporting carriage 10 for the rehabilitation device is used by connecting a self-propelled type equipped with a driving device for traveling that enables forward and backward movement and a driven type without a driving device in the longitudinal direction. The length of the transporting carriage 10 for the transfer device can be adjusted by selecting the number of connected units, and by using it in parallel, it can be used for a wide range.
The column slab 2 is formed in a plate shape, and is laid on the column base surface on which the column 6 is installed, where the furnace ring block 12 is lifted by the switching device 1. Two are used. In other words, the support slab 2 constitutes a load load distribution support member laid on a support base surface on which the support 6 is installed. As the support slab 2, for example, an inexpensive steel disposal slab generated at an ironworks, a concrete block, a disposal ingot case, or the like is used.

  As shown in FIG. 3, the liner member 4 has a plurality of plate-like members arranged on the upper surface of the support slab 2. As will be described later, the thickness of the liner member 4 is a thickness that compensates for the deviation between the target reference surface and the reference surface after the loading slab 26 is unloaded from the upper surface of the support slab 2. As the plate-like member, for example, an inexpensive steel waste slab generated at an ironworks, a concrete block, a waste ingot case, or the like is used as in the case of the support slab 2. 3 indicates a portion of the liner member 4 that is in contact with the lower end portion of the column 6.

Hereinafter, referring to FIGS. 4 to 6, the thickness of the liner member 4 is compensated for deviation between the target reference surface and the reference surface after the loading slab 26 is unloaded from the upper surface of the support slab 2. The procedure for setting the thickness to be performed will be described. In the present embodiment, a case where the reference surface is the upper surface of the support slab 2 will be described.
First, as shown in FIG. 4, after setting the position to be the support base surface of each support 6, the ballus 22 is spread on the ground of the support base surface to an appropriate thickness, and this ballast 22 is rolled by a roller or the like. Finish with a flat surface. Next, two slabs 2 for struts are laid on the ballast 22 finished as a flat surface at a position that becomes a strut base surface of each strut 6. Then, the height of the upper surface of each strut slab 2 is measured for each of the two measurement locations set in each strut slab 2, and the measured height is set as a target reference plane. In addition, in FIG. 5, the positional relationship of each support | pillar 6 and the slab 2 for support | pillars is shown. As shown in FIG. 5, each strut 6 is assigned a number from I to IV, and two struts 2 for struts laid at a position that serves as a strut base surface of each strut 6. Also, numbers from 1 to 8 are given. Moreover, in FIG. 5, the two measurement locations set to each support | pillar slab 2 are shown as "A" and "B", respectively.

  Next, as shown in FIG. 6, a plurality of sleepers 24 are arranged on the upper surface of the support slab 2, and one large loading slab 26a having a large area is placed thereon. A small loading slab 26b is loaded on the top, and the column base surface is forced to sink. At this time, the loading slabs 26b are sequentially loaded on the loading slab 26a and stacked in multiple stages so that the total weight of the loading slabs 26a and 26b is equal to or greater than the weight of the suspension device 1. That is, the loading slabs 26a and 26b have a weight that is equal to or greater than the weight of the suspension device 1, and constitute a heavy load that is loaded on the upper surface of the support slab 2 and forcibly sinks the support foundation surface. In the present embodiment, the sleepers 24 are extremely light in comparison with the loading slabs 26a and 26b, and therefore will be described as being not involved in the forced settlement of the column base surface.

  The loading slab 26 is loaded on the upper surface of the support slab 2, and after a predetermined time (36 hours in the present embodiment) has elapsed, the support foundation surface is forced to sink, and then the measurement set for each support slab 2 is performed. The height of the upper surface of each strut slab 2 is measured for each location. And the amount of subsidence for every measurement location is measured from the height for every measurement location when slab 2 for support posts is laid in the support foundation surface, and the height for every measurement location after forcibly sinking the support foundation surface.

After measuring the amount of settlement for each measurement location set in each strut slab 2, the loading slabs 26 a and 26 b and the sleepers 24 are unloaded from the upper surface of the strut slab 2. When the loading slabs 26a, 26b and the sleepers 24 are unloaded from the upper surface of the support slab 2, the support foundation surface that has been forcibly sunk rises. The upper surface of each strut slab 2 is measured at each measurement point set on each strut slab 2 after a predetermined time (24 hours in the present embodiment) has passed after the strut base surface that has been forcibly sunk. Measure the height. And the amount of upheaval for every measurement location is computed from the height for every measurement location after forcibly sinking the support foundation, and the height for every measurement location after the support foundation which had been forced to sink. Here, the upper surface of the column slab 2 after the column base surface that has been forcedly sunk is set as a reference surface after the loading slab 26 is unloaded from the upper surface of the column slab 2.
Next, the rebound amount of the column foundation surface that has been forced to sink is calculated from the sinking amount and the protruding amount for each measurement location.
Here, the amount of settlement, the amount of uplift, and the amount of rebound for each measurement location are shown in the following table.

As shown in the above table, the amount of subsidence and the amount of bulge differ for each measurement location, and the rebound amount has a deviation for each measurement location. That is, there is a deviation between the target reference surface and the reference surface after the loading slab 26 is unloaded from the upper surface of the support slab 2.
Therefore, a plurality of plate-like members having different thicknesses are prepared in advance, and these plate-like members are loaded from the reference surface where the liner member 4 has a target thickness and the upper surface of the support slab 2. It arrange | positions on the upper surface of the support | pillar slab 2 so that it may become the thickness which compensates the deviation with the reference plane after unloading the slab 26 for use. That is, the thickness of the liner member 4 is set to compensate for the deviation between the target reference surface and the reference surface after the loading slab 26 is unloaded from the upper surface of the support slab 2. At this time, in each support column 6, the allowable range of the level difference between A and B and the level difference between CD in the hatched portion shown in FIG. 3 is set within ± 0.5 mm. Moreover, the allowable value of the uneven settlement amount of the column base surface between the columns 6 is set within ± 5 mm. The permissible range of the level difference between A and B and the level difference between CD and the permissible value of the unequal settlement of the strut base surface between the struts 6 are examples, and are limited to the above numerical values. It is not something.

Next, functions and effects of this embodiment will be described.
Hereinafter, with reference to FIG. 7 to FIG. 10, the construction work of a blast furnace furnace body constituted by a plurality of furnace body ring blocks will be described.
First, on the ground at the position that becomes the support base surface of each support 6, the ballus 22 is spread to an appropriate thickness, and the ballus 22 is finished to a flat surface by roller rolling or the like, and the position that becomes the support base surface of each support 6. The slab 2 for a pillar is laid. Then, a plurality of sleepers 24 are arranged on the upper surface of the support slab 2, and the loading slabs 26 a and 26 b are loaded thereon to forcibly sink the support strut base surface, and the loading slab 26 a, After unloading 26 b and the sleepers 24, the liner member 4 is placed on the upper surface of the support slab 2.

Next, the four struts 6 are respectively placed on the upper surface of the liner member 4 placed on the upper surface of the strut slab 2, and the four struts 6 are disposed on the strut base surface. Then, two horizontal beams 8 are passed over the tops of the four columns 6 on the long span side, and two lift jacks 16 are arranged on the two horizontal beams 8 respectively.
At this time, the thickness of the liner member 4 is a thickness that compensates for the deviation between the target reference surface and the reference surface after the loading slab 26 is unloaded from the upper surface of the support slab 2. The level of the column 6 becomes horizontal.

Next, as shown in FIG. 7, the transportation carts 10 for the switching device are respectively disposed in the two column 6 rectangular cutout grooves 14 facing each other on the short span side among the four columns 6. And the bogie main body 18 is raised and the suspending apparatus 1 is lifted.
After lifting the suspension device 1, the suspension device 1 is moved to the position of the furnace ring block 12 (only one of the plurality of furnace ring blocks shown here) placed on the mounting table 30. Then, the bogie main body 18 is lowered to lower the suspension device 1, and the lower end portion of each column 6 is placed on the upper surface of the liner member 4, and then suspended from the lift jack 16 to the upper end portion of the furnace body ring block 12. The suspended rod 28 is connected.

  After the suspension rod 28 is connected to the upper end portion of the furnace body ring block 12, the lift jack 16 is driven to lift up the furnace body ring block 12 from the mounting table 30 via the suspension rod 28. At this time, the weight of the furnace body ring block 12 is close to 2000 t, and if the weight of the switching device 1 is included, a load of 600 t per leg is applied to the support 6, so that the four supports 6 can sink unevenly. There is sex. However, the column base surface where the furnace body ring block 12 is lifted by the changing device 1, that is, the column base surface where each column 6 is disposed is forcibly submerged in advance. For this reason, the lifting operation of the furnace ring block 12 by the switching device 1 on the support base surface can be performed with an allowable value of unequal settlement within ± 5 mm.

  Next, as shown in FIG. 8, the furnace ring ring block 12 is transported from the furnace body assembly site in a state where the furnace ring block 12 is lifted up from the mounting table 30 by the lift jack 16. At this time, the suspension device 1 is moved to the position of the furnace body transportation carriage 32 standing by at a position away from the mounting base 30 in the vicinity of the furnace body assembly site by the operation of the transportation device transportation carriage 10. The furnace body transport carriage 32 has the same configuration as that of the transfer apparatus transport carriage 10. Then, as shown in FIG. 9, the furnace ring block 12 is lifted down by the lift jack 16 and loaded on the load level adjusting frame 34.

  Next, as shown in FIG. 10, the transport carriage 32 for the furnace body is moved to the vicinity of the furnace base part 38 of the blast furnace, and the rail 36 provided on the load level adjusting frame 34 and the rail 36 on the furnace body base part 38. And connect. On the rail 36, there is provided a moving table 42 on which a support block 40 is disposed. The furnace ring block 12 placed on the moving table 42 is slid in the direction of the arrow by driving the drive cylinder 44. It is moved horizontally and finally located at the center of the furnace body base 38.

  Next, the furnace body ring block 12 is lifted up by a hanging tool 46 that is suspended from the furnace body column lifting equipment, and the furnace body ring block 12 that is subsequently carried into the furnace body ring block 12 is A space is provided so that the height is movable on the body base 38. Then, the next furnace body ring block 12 is moved to the lower side of the furnace body ring block 12 which has been lifted up first, the upper and lower furnace body ring blocks 12 are connected, and further lifted up. Such an operation is repeated for the number of newly manufactured blocks, and the furnace body ring blocks 12 are integrated on the furnace body base portion 38 to complete the construction work of the blast furnace furnace body.

  Therefore, if it is the basic structure of the lifting device of this embodiment, while setting on the upper surface of the slab 2 for support | pillars, the thickness of the liner member 4 by which the switching device 1 is mounted on an upper surface is made into a target. The thickness compensates for the deviation between the reference surface to be removed and the reference surface after the loading slab 26 is unloaded from the upper surface of the support slab 2. For this reason, it becomes possible to make the level of the support | pillar 6 mounted in the upper surface of the liner member 4 horizontal, and the level of the horizontal beam 8 passed to the top part of the long span side of the support | pillar 6 with the support | pillar 6 is horizontal. It becomes. As a result, since the level of the switching device 1 is horizontal, the stability of the switching device 1 can be improved, and the safety of dismantling of the blast furnace furnace body and construction work can be improved.

  Moreover, since the reference surface is the upper surface of the support slab 2 in the suspension structure according to the present embodiment, the target reference surface and the support are not moved without moving the support slab 2 from the support base surface. The deviation from the reference surface after unloading the loading slab 26 from the upper surface of the slab 2 can be measured. For this reason, it becomes easy to measure the deviation described above, and it is possible to improve the safety of dismantling and construction work of the blast furnace furnace body.

  Furthermore, if it is the basic structure of the lifting apparatus of this embodiment, the structure of the liner member 4 is made into the structure which has the some plate-shaped member arrange | positioned on the upper surface of the slab 2 for support | pillars. For this reason, it is easy to make the thickness of the liner member 4 a thickness that compensates for the deviation between the target reference surface and the reference surface after the loading slab 26 is unloaded from the upper surface of the support slab 2. Therefore, the work efficiency related to the dismantling and construction work of the blast furnace furnace body is improved and the work cost is reduced.

  Moreover, if it is the foundation structure of the lifting apparatus of this embodiment, since the support | pillar foundation surface is made into the flat surface by rolling the ballus 22 with which the ground part of the support | pillar foundation surface was filled, a support | pillar foundation surface is comprised. It becomes possible to make the ground conditions such as the particle size and material of the earth and sand suitable for the laying of the slab 2 for the column. As a result, since the ground portion of the column base surface on which the column slab 2 is laid is stabilized, it becomes possible to improve the stability of the suspension device 1 and improve the safety of the blast furnace furnace disassembly and construction work. It becomes possible to make it.

  Moreover, if it is the basic structure of the lifting apparatus of this embodiment, inexpensive heavy objects, such as a steelworks waste slab, a concrete block, a waste ingot case, should be used as the support slab 2 and the plate-like member. Therefore, it is possible to reduce the cost related to the dismantling and construction work of the blast furnace furnace body. Moreover, it becomes possible to shorten a foundation surface reinforcement | strengthening construction period by using cheap heavy objects, such as a steelworks waste slab, a concrete block, a waste ingot case, as the support | pillar slab 2 and the liner member 4. FIG. .

  Moreover, if it is the basic structure of the lifting apparatus of this embodiment, the column base surface of the location which lifts the furnace ring block 12 with the switching apparatus 1 will be on the upper surface of the column slab 2, and the switching apparatus 1 The load slabs 26a and 26b having a weight equal to or greater than the weight of the load are sunk in advance. For this reason, it is possible to reduce the amount of settlement of the support foundation surface that occurs when the furnace ring block 12 is lifted by the suspending device 1 to an allowable value or less, and to suppress deviation in the amount of settlement. Become. As a result, it becomes possible to improve the safety of dismantling and construction work of the blast furnace furnace body.

In addition, in the basic structure of the lifting device of the present embodiment, the case where the lifting device is a blast furnace ring block switching device has been described, but the present invention is not limited to this, and the lifting device is, for example, It can also be used as a bowling or a wobble.
Moreover, in the foundation structure of the lifting device of the present embodiment, the configuration of the liner member 4 is a configuration having a plurality of plate-like members arranged on the upper surface of the support slab 2, but is not limited thereto. Alternatively, the liner member 4 may be formed as a single piece. In this case, the liner member 4 may be formed by processing, for example, an inexpensive steel waste slab generated at an ironworks, a concrete block, a waste ingot case, or the like, or a newly designed and formed. May be.

Furthermore, in the foundation structure of the lifting device of the present embodiment, the reference surface is the upper surface of the support slab 2, but the present invention is not limited to this, and the support base surface may be the reference surface.
Further, in the foundation structure of the lifting device according to the present embodiment, the ballast 22 is spread on the ground of the pillar foundation surface of each pillar 6, the ballus 22 is finished to a flat surface by roller rolling or the like, and the pillar slab 2 thereon However, the present invention is not limited to this. That is, if the ground conditions such as the particle size and material of the earth and sand constituting the support foundation surface are good, the support slab 2 may be directly laid on the flat ground without using the ballast 22.

Moreover, in the basic structure of the lifting device of the present embodiment, the suspension device 1 is configured to include the four columns 6 and the two horizontal beams 8, but the configuration of the suspension device 1 is It is not limited. That is, the number of the support | pillars 6 with which the switching apparatus 1 is provided is not limited to four, and the number of the horizontal beams 8 is not limited to two. Furthermore, the present invention may be applied to the suspension device 1 having a structure that does not include the horizontal beam 8.
Further, in the basic structure of the lifting device of the present embodiment, two slabs 2 for struts are used for one strut 6, but the present invention is not limited to this. One piece may be used with respect to the support | pillar 6 of a book, and three or more pieces may be used.

It is a perspective view which shows the basic structure of the lifting apparatus of this embodiment. It is a front view which shows the basic structure of the lifting apparatus of this embodiment. It is a top view which shows the arrangement | positioning state of the liner member of this embodiment. It is sectional drawing which shows the condition where the support | pillar base surface of the changing apparatus in the location which lifts the furnace ring block of this embodiment is forcedly settled beforehand. It is a top view which shows the arrangement | positioning condition of the support | pillar slab of this embodiment. It is sectional drawing which shows the condition where the support | pillar base surface of the changing apparatus in the location which lifts the furnace ring block of this embodiment is forcedly settled beforehand. It is a front view which shows the condition which lifts a furnace body ring block with the switching apparatus used by this embodiment. It is a side view which shows the condition which moves the furnace ring block lifted up by the switching apparatus used by this embodiment on the load level adjustment frame of a furnace transport carriage. It is explanatory drawing which shows the condition which loaded the new furnace body ring block on the load level adjustment frame of a furnace body transport trolley | bogie with the switching apparatus used by this embodiment. It is a side view which shows the condition which moves the new furnace body ring block loaded on the load level adjustment frame of the furnace transport carriage used by this embodiment on a blast furnace furnace foundation. It is a perspective view which shows the basic structure of the conventional lifting apparatus. It is sectional drawing which shows the condition where the support | pillar base surface of the changing apparatus in the location which lifts the conventional furnace ring block is forcedly settled beforehand.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Transfer device 2 Slab for support columns 4 Liner member 6 Support column 8 Horizontal beam 10 Transport cart for transfer devices 12 Furnace ring block 14 Rectangular cutout groove 16 Lift jack 18 Car body 20 Wheel 22 Ballast 24 Sleeper 26 Loading slab 28 Suspension rod 30 Station 32 Furnace body transport carriage 34 Load level adjustment frame 36 Rail 38 Furnace body base 40 Support block 42 Moving table 44 Drive cylinder 46 Suspension tool

Claims (8)

Before placing the lifting device on the upper surface of the load load distribution support member laid on the column base surface on which the column of the lifting device is installed, the upper surface of the load load distribution support member A step of loading a heavy object having a weight equal to or greater than the weight and forcibly sinking the pillar base surface; and after forcibly sinking the pillar base surface, the heavy object is removed from the upper surface of the load load distribution support member. A method for constructing a lifting device having a loading process,
A step of placing a liner member on the upper surface of the load distribution support member, and a step of placing the lifting device on the upper surface of the liner member,
The thickness of the liner member is a thickness that compensates for a deviation between a target reference surface and a reference surface after the heavy load is unloaded from the upper surface of the load distribution support member. A foundation construction method for a lifting device.   The said liner member has a some plate-shaped member arrange | positioned on the upper surface of the said load load dispersion | distribution support member, The foundation construction method of the lifting apparatus of Claim 1 characterized by the above-mentioned.   3. The lifting apparatus foundation construction method according to claim 1, wherein the lifting apparatus is a blast furnace ring block switching apparatus. A load load distribution support member laid on a column base surface on which the column of the lifting device is installed, and a weight that is equal to or greater than the weight of the lifting device, and temporarily on the upper surface of the load load distribution support member A heavy load that is loaded on and forcibly sinks the base surface of the column,
A liner member disposed between the lifting device and the load load distribution support member;
The thickness of the liner member is a thickness that compensates for a deviation between a target reference surface and a reference surface after the heavy load is unloaded from the upper surface of the load distribution support member. The basic structure of the lifting device.   The foundation structure of the lifting device according to claim 4, wherein the reference surface is an upper surface of the load load distribution support member.   The said liner member has a some plate-shaped member arrange | positioned on the upper surface of the said load load dispersion | distribution support member, The foundation structure of the lifting apparatus of Claim 4 or 5 characterized by the above-mentioned.   7. The load member according to claim 4, wherein the load load distribution support member is laid above a ballast that is filled and rolled into a ground portion of the support base. The basic structure of the lifting device.   The foundation structure of the lifting device according to any one of claims 4 to 7, wherein the lifting device is a blast furnace furnace ring block suspension device.

Images