Upper pillar erection support device

Abstract

To provide an installation support device 5 for an upper column 1 capable of supporting the installation of the upper column 1 by erecting the upper column 1 above a lower column 2. [Solution] An installation support device 5 for an upper column 1 that supports the installation of an upper column 1 that has been brought in while lying down so that its longitudinal direction is approximately horizontal, and is characterized by comprising a lower column side base 12 attached to the upper end of the lower column 2, an upper column side base 11 attached to the underside of the lower end of the upper column 1 when lying down, and a pivot part that pivotally connects the lower column side base 12 and the upper column side base 11 with the horizontal direction as the axis of rotation.

Description

[Technical Field]

[0001] The present invention relates to an upper column installation support device that supports the installation of upper columns that have been carried in, for example, in a lying position. [Background technology]

[0002] For example, when constructing a building such as a station above railroad tracks, the building's columns may be assembled by connecting upper columns to lower columns that penetrate the deck above the tracks. At the construction site, the long upper columns are brought onto the deck in advance with their longitudinal direction laid out so that they are roughly horizontal, and then assembled to the lower columns at night, when trains are not running, etc. This meant that at the construction site, it was necessary to erect the upper columns in their laid-out state on the deck.

[0003] As a technology for assisting in the erection of such upper columns, for example, Patent Document 1 discloses a method in which a column support base equipped with wheels is connected to the lower end of the upper column, and as the upper end of the upper column is lifted, the column support base runs on the deck slab, thereby assisting in the erection of the upper column in a reclined position.

[0004] However, in Patent Document 1, the pillar support base moves as the upper end of the upper pillar is lifted, so the upper pillar cannot be erected above the lower pillar. For this reason, in Patent Document 1, after the upper pillar is lifted and erected, it is necessary to rotate the heavy equipment and move the upper pillar above the lower pillar.

[0005] However, when the erected upper pillar is moved above the lower pillar, there is a risk that the upper pillar will swing significantly as the heavy equipment rotates, which is undesirable from a safety standpoint. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-139702 Summary of the Invention [Problem to be solved by the invention]

[0007] In view of the above-mentioned problems, the present invention aims to provide an upper column erection support device that can erect an upper column above a lower column and support the erection of the upper column. [Means for solving the problem]

[0008] This invention is an upper column installation support device that supports the installation of an upper column that has been brought in while lying down so that its longitudinal direction is approximately horizontal, and includes a lower column side base attached to the upper end of the lower column, an upper column side base attached to the underside of the lower end of the upper column in the lying down state, and a pivot part that pivotally connects the lower column side base and the upper column side base with the horizontal direction as a rotation axis. The pivot portion is a first pivot portion, and a second pivot portion is provided which pivotally connects the lower column side base portion and the upper column side base portion with the vertical direction as a rotation axis. It is characterized by the fact that

[0009] The lower end of the upper pillar refers to one end of the upper pillar in the longitudinal direction when it is laid down, and the part that becomes the lower end when the upper pillar is erected. According to this invention, the upper column erection support device can erect the upper column above the lower column and support the erection of the upper column.

[0010] Specifically, because the upper column is connected to the lower column via a pivot, the upper column setup support device can rotate the upper column around the horizontal direction when the upper end of the upper column in a reclined position is lifted up. As a result, the upper column setup support device can erect the upper column in a reclined position directly above the lower column.

[0011] In this case, since the upper column is always connected to the lower column, the installation support device for the upper column can suppress the swaying of the upper column that occurs when the upper end is lifted. Furthermore, since the upper column is connected to the lower column, the upper column installation support device can prevent, for example, the lower end of the upper column from falling and colliding with the lower column or the floor surface during the process of lifting the upper end.

[0012] This allows the upper column erection support device to safely erect the upper column above the lower column and support the erection of the upper column. Therefore, the upper column erection support device can erect the upper column that has been brought in lying down, not just at night, for example.

[0013] Ma Ta, The pivot portion is a first pivot portion, and a second pivot portion is provided that pivotally connects the lower column side base portion and the upper column side base portion with the vertical direction as a rotation axis. Therefore, on The pillar erection support device can erect the upper pillar while rotating the upper pillar horizontally around the second pivot part.

[0014] Alternatively, the upper column installation support device can rotate the erected upper column horizontally around the second pivot portion to position it directly above the lower column. Therefore, the upper column installation support device can easily align the orientation of the upper column with the orientation of the lower column in the rotation direction with the vertical direction as the center of rotation.

[0015] This makes it unnecessary for the upper column installation support device to rotate the upper column in a laid-down state in advance in accordance with the orientation of the lower column so that the orientation of the upper column matches the orientation of the lower column when the upper column is erected.

[0016] In another aspect of the present invention, the second pivot part may be composed of an axis extending in the vertical direction and a cylindrical body extending in the vertical direction and through which the axis is inserted, and the cylindrical body may be divided into two in a vertical cross section passing through the radial center and configured to be openable and closable with the axis of rotation in the vertical direction.

[0017] With this configuration, the shaft of the upper column setup support device can be inserted horizontally into the cylinder, making it easy to connect the upper column, which has an upper column-side base and a first pivot part attached, to the lower column, which has a lower column-side base attached in advance.

[0018] In this case, the upper column installation support device can reduce the height to which the upper column in a laid-down state is lifted compared to when the shaft is inserted into the cylinder from above and below. Therefore, the upper column installation support device can safely connect the lower column and the upper column.

[0019] In another aspect of the present invention, the lower column side base portion and the upper column side base portion may be configured to sandwich the lower column and the upper column, respectively. According to this configuration, the upper column installation support device can attach the lower column side base and the upper column side base to, for example, the outer surface of the lower column and the outer surface of the upper column on which the erection piece is not provided.

[0020] In another aspect of the present invention, a support member may be provided that is disposed across the lower column side base and the floor surface and supports the lower column side base from below. With this configuration, the upper column installation support device can prevent the lower column side base that clamps the lower column from shifting downward due to the weight of the upper column by using the support member.

[0021] As a result, the position of the first pivot part in the vertical direction of the upper column setup support device is stabilized, and the rotation trajectory of the upper column that rotates around the first pivot part can be further stabilized. As a result, the upper column setup support device can more reliably erect the upper column directly above the lower column.

[0022] As another aspect of the present invention, the lower column side base and the upper column side base may be constituted by a lower column erection piece and an upper column erection piece, respectively. According to this configuration, the upper column installation support device can eliminate the need to fasten and attach the lower column side base and the upper column side base to the lower column and the upper column, respectively. Alternatively, the upper column installation support device can eliminate the need to integrally provide the lower column side base and the upper column side base, which are separate from the erection piece, to the lower column and the upper column.

[0023] Furthermore, the upper column installation support device can simultaneously remove the lower column side base and the upper column side base and the erection piece. As a result, the upper pillar erection support device can improve work efficiency and support the erection of the upper pillars with a simple configuration.

[0024] Another aspect of this invention may include a wire having one end attached to the upper pillar facing the upper pillar base, a winding machine for winding up the wire, and a guide roller arranged along the outer surface of the lower pillar facing the lower pillar base and guiding the winding of the wire.

[0025] According to this configuration, the upper column erection support device can prevent the upper column from returning to its reclined state by winding up the wire, while supporting the erection of the upper column by winding up the wire.

[0026] In other words, the upper pole installation support device can support the upper pole with its upper end lifted up by the tension of the wire, thereby improving safety when installing the upper pole.

[0027] In another aspect of the present invention, a jack may be provided to support the lower end of the upper pillar from below when the pillar is laid down. With this configuration, the load on the pivot part can be reduced by the jack, so the upper column installation support device can reduce the sliding resistance of the pivot part. As a result, when the upper end of the upper column is lifted up, the upper column installation support device can smoothly start rotating the upper column around the pivot part.

[0028] In another aspect of the present invention, a tip-over prevention mechanism may be provided that prevents the upper column from tipping over by extending. The term "the upper column falls over" refers to the upper column rotating around the pivot so that the upper end of the column, which has been lifted, returns to its laid-down state. The above-mentioned anti-tip mechanism refers to, for example, a anti-tip mechanism composed of at least one damper, or a anti-tip mechanism composed of hollow columnar members with different cross-sectional shapes connected in an expandable and contractible manner.

[0029] According to this configuration, the upper column erection support device can prevent the upper column from tipping over and returning to its reclined position during erection by using the tipping prevention mechanism. Furthermore, for example, by providing a fall prevention mechanism that applies a biasing force to the upper pillar and contracts as the upper pillar is erected, the upper pillar erection support device can prevent the upper pillar from coming into contact with the lower pillar with force when the rotating upper pillar comes into contact with the lower pillar. Therefore, the upper column erection support device can more reliably support the safe erection of the upper columns.

[0030] In another aspect of the present invention, the fall prevention mechanism is composed of an expandable member, one end of which is pivotally connected to the surface of the upper column on which the upper column side base is provided and which can maintain an expanded or contracted state, and a locking member, which is placed on the floor surface located below the upper column in a reclined position and to which the other end of the expandable member is pivotally locked, and the locking member may be configured so that the other end of the expandable member can move in the longitudinal direction toward the lower column as the upper end of the upper column is lifted.

[0031] With this configuration, one end of the expandable member is connected to the upper column and the other end is engaged with the engaging member, so the expandable member can support the upper column by tensioning it between the floor and the upper column. Therefore, the upper column installation support device can reliably prevent the upper column from tipping over around the pivot part.

[0032] Furthermore, as the upper end of the upper column is lifted, the other end of the telescopic member can move longitudinally toward the lower column, so the upper column installation support device can support the upper column with an telescopic member that has a shorter overall length than an telescopic member that is locked in an immovable state. As a result, the upper column erection support device can prevent the expansion and contraction members from becoming too large and can support the safe erection of the upper columns.

[0033] In another aspect of the present invention, the anti-tip mechanism may be composed of a first oil damper facing the upper column base and having a piston rod pivotally connected to the upper column, a second oil damper having a piston rod pivotally connected to the floor surface, and a connecting part that connects the cylinder of the first oil damper and the cylinder of the second oil damper in a non-pivotable state, and the first oil damper and the second oil damper may each be configured to limit the flow rate of hydraulic oil flowing inside the cylinder when a tensile load acts on the piston rod.

[0034] With this configuration, when the first oil damper and the second oil damper extend, the flow rate of hydraulic oil flowing inside the cylinder is restricted, so the extension speed of the fall prevention mechanism is slower than when the flow rate of hydraulic oil is not restricted.

[0035] In other words, when a tensile load is applied to the piston rod of the first oil damper and the piston rod of the second oil damper, the tip-over prevention mechanism extends against the tensile load.

[0036] Therefore, when the upper pillar begins to tip back to its laid-down position during erection, the upper pillar erection support device can prevent the upper pillar from tipping over by slowing down the tipping speed of the upper pillar using the tipping prevention mechanism.

[0037] Furthermore, because the upper column installation support device can connect the floor and the upper column with a fall prevention mechanism, the fall prevention mechanism can suppress the swaying of the upper column that occurs when the upper end is lifted. Therefore, the upper column installation support device can prevent loads that could cause imbalance from acting on heavy machinery that lifts the upper column, for example. Therefore, the upper column erection support device can more reliably support the safe erection of the upper columns.

[0038] As an aspect of the present invention, the pivot part may be composed of a connecting arm that pivotally connects the erection piece of the lower pillar and the erection piece of the upper pillar. According to this configuration, the upper column installation support device can connect the lower column and the upper column with the connecting arm without separately providing a lower column side base and an upper column side base.

[0039] Furthermore, the upper column installation support device can connect and disconnect the lower column and upper column simply by attaching and detaching the connecting arm, thereby improving workability.

[0040] This allows the upper column installation support device to pivotally connect the lower column and the upper column with a simple configuration without compromising workability.

[0041] In another aspect of the present invention, a guide member may be provided that is attached to the lower pillar and guides the upper pillar to directly above the lower pillar. With this configuration, the upper column installation support device can reliably guide the upper column, which rotates around the horizontal direction, toward directly above the lower column, allowing the upper column to be erected reliably and efficiently.

[0042] As another aspect of the present invention, the guide member may include a sliding member with a low coefficient of friction on a sliding surface on which the upper column slides. With this configuration, the guide member can more smoothly guide the upper pillar to directly above the lower pillar.

[0043] This allows the upper column erection support device to prevent unintended malfunctions caused by obstruction to the rotation of the upper column or damage to the upper column due to sliding with the guide member, thereby more reliably supporting the safe erection of the upper column.

[0044] In another aspect of the present invention, the guide member may be attached to the erection piece of the lower pillar. With this configuration, the upper column installation support device eliminates the need to provide a separate portion on the lower column for attaching the guide member.

[0045] Furthermore, the upper column installation support device can suppress positional deviation of the guide member relative to the connection point between the erection piece of the lower column and the connection arm. This allows the upper column installation support device to more stabilize the rotational trajectory of the upper column, thereby more reliably guiding the upper column directly above the lower column. [Effects of the Invention]

[0046] According to the present invention, it is possible to provide an upper column erection support device that can erect an upper column above a lower column and support the erection of the upper column. [Brief explanation of the drawings]

[0047] [Figure 1] FIG. 10 is an explanatory diagram illustrating an outline of the upper column in an upright state. [Figure 2] FIG. 10 is an explanatory diagram illustrating an outline of the upper pillar immediately before lifting. [Figure 3] FIG. 2 is a front view showing the appearance of the installation support device. [Figure 4] FIG. 3 is an external perspective view showing the appearance of the pivot mechanism when viewed obliquely downward. [Figure 5] FIG. 3 is an external perspective view showing the appearance of the pivot mechanism when viewed obliquely from above. [Figure 6] FIG. [Figure 7] 10 is an explanatory diagram illustrating the state of the upper pillar rotating around the connection point between the lower pillar base and the connecting arm. FIG. [Figure 8] FIG. 10 is an explanatory diagram illustrating the state of the erection support device during the erection process. [Figure 9] FIG. 10 is an explanatory diagram illustrating the state of the construction support device when the upper pillar is erected. [Figure 10] FIG. 10 is a front view showing the appearance of the installation support device in Example 2. [Figure 11] FIG. 11 is a front view showing the appearance of the installation support device in Example 3. [Figure 12] FIG. 2 is an external perspective view showing the appearance of the construction support device as viewed diagonally downward. [Figure 13] FIG. 2 is an external perspective view showing the appearance of the construction support device as viewed obliquely from above. [Figure 14] FIG. 3 is an exploded perspective view showing a first pivot portion and a second pivot portion in an exploded state. [Figure 15] 12 is a cross-sectional view taken along the line AA in FIG. 11. [Figure 16] An explanatory diagram illustrating the state in which the upper pillar is being delivered. [Figure 17] FIG. 10 is an explanatory diagram illustrating the state of the upper pillar rotating around the first pivot portion. [Figure 18] FIG. 10 is an explanatory diagram illustrating the state of the upper pillar rotating around the second pivot portion. [Figure 19] FIG. 10 is a front view showing the appearance of the installation support device in Example 4. [Figure 20] FIG. 3 is an explanatory diagram illustrating an outline of a first pivot portion and a second pivot portion. [Figure 21] FIG. 4 is an explanatory diagram illustrating an outline of a fall prevention mechanism. [Figure 22] FIG. 10 is an explanatory diagram illustrating the state of the erection support device during the erection process. [Figure 23] FIG. 10 is an explanatory diagram illustrating the state of the construction support device when the upper pillar is erected. [Figure 24] FIG. 13 is a front view showing the appearance of the installation support device in the fifth embodiment. [Figure 25] FIG. [Figure 26] FIG. 10 is an explanatory diagram illustrating the state of the erection support device during the erection process. [Figure 27]FIG. 10 is an explanatory diagram illustrating the state of the construction support device when the upper pillar is erected. [Figure 28] FIG. 13 is an exploded perspective view showing the disassembled state of the installation support device in the sixth embodiment. [Figure 29] FIG. 4 is an external perspective view showing the external appearance of a guide member. [Figure 30] FIG. 10 is an explanatory diagram illustrating the state of the upper pillar rotating around the first pivot portion. [Figure 31] FIG. 10 is a front view showing the appearance of a construction support device according to another embodiment. [Figure 32] 10A and 10B are schematic diagrams illustrating the operation of a tip-over prevention mechanism in another embodiment. [Figure 33] FIG. 4 is an explanatory diagram illustrating an outline of a locking portion. DETAILED DESCRIPTION OF THE INVENTION

[0048] An embodiment of the present invention will be described below with reference to the drawings. [Example]

[0049] In the first embodiment, a construction support device 5 that supports the construction of an upper pillar 1 that has been carried in a lying state will be described with reference to FIGS. 1 to 6. FIG. Note that Figure 1 shows an explanatory diagram outlining the upper pillar 1 in an upright state, Figure 2 shows an explanatory diagram outlining the upper pillar 1 just before being lifted, and Figure 3 shows a front view of the installation support device 5.

[0050] 4 is a perspective view of the pivot mechanism 10 as viewed obliquely downward, FIG. 5 is a perspective view of the pivot mechanism 10 as viewed obliquely upward, and FIG. 6 is a front view of the main parts of the guide member 14. As shown in FIG. In addition, in FIG. 6, the upper pillar 1 in a laid state is shown by a solid line, and the upper pillar 1 in the process of being erected is shown by a two-dot chain line.

[0051] 1 is the upper side in this embodiment, the lower side in FIG. 1 is the lower side in this embodiment, the arrow X in the figure indicates the front-to-back direction (hereinafter referred to as the front-to-back direction X), and the arrow Y in the figure indicates the width direction (hereinafter referred to as the width direction Y).

[0052] First, as shown in Figure 1, the upper pillar 1 is connected to the upper end of the lower pillar 2, the lower end of which is fixed to a foundation or the like, and forms a steel pillar 3 of a building such as a station building constructed above a railway track. As shown in Figure 1, when connected to the lower column 2, the upper column 1 is a tubular steel frame with its longitudinal direction extending vertically, and its cross-sectional shape along the horizontal direction (short side direction) is formed into an approximately rectangular shape (see Figure 4). When the upper pillar 1 is erected so that its longitudinal direction is in the up-down direction, the corners 1a between the outer surface and the lower end surface are formed in a chamfered shape.

[0053] Furthermore, as shown in FIG. 1, two lower erection pieces 1b are joined to each outer surface of the upper pillar 1 at the lower end, which is the lower end. In addition, as shown in FIG. 1, the upper column 1 has an upper erection piece 1c arranged at the upper end, which is the upper end, and a beam bracket 1d arranged below the upper erection piece 1c, joined to each outer surface.

[0054] As shown in Figure 2, such an upper pillar 1 is brought onto the deck slab 4 described later in a lying state (sideways) so that the longitudinal direction is approximately horizontal, and above the lower pillar 2, its erection is assisted by the erection support device 5 described later.

[0055] As shown in Figure 1, the lower pillar 2 is a cylindrical steel frame extending in the vertical direction, and its cross-sectional shape along the horizontal direction (short side direction) is formed into a roughly rectangular cross-section that is roughly the same size as the upper pillar 1 (see Figure 4). As shown in FIG. 1, two upper erection pieces 2a are attached to each outer surface of the lower pillar 2, and two beam brackets 2b are attached to each outer surface of the lower pillar 2, which are located at the upper end, as well as the upper erection piece 2a.

[0056] Furthermore, as shown in Figure 1, the floor slab 4, which will be the floor part of the building, is joined to the lower column 2 between the upper erection piece 2a and the beam bracket 2b. For this reason, the lower column 2 is arranged so that its upper end protrudes above the floor slab 4.

[0057] Next, the erection support device 5 that supports the erection of the upper pillar 1 that has been carried in in a lying state will be described in detail. As shown in Figures 2 and 3, the erection support device 5 is composed of a pivot mechanism unit 10 that pivotally connects one end side (hereinafter referred to as the lower end) of the upper pillar 1, which becomes the lower end when in the upright state, to the upper end of the lower pillar 2, and a winding mechanism unit 20 that supports the upper pillar 1 during the erection process by the tension of the wire 22.

[0058] As shown in Figures 3 to 5, the pivot mechanism 10 is composed of a pair of upper column side bases 11 arranged on the upper column 1, a pair of lower column side bases 12 arranged on the lower column 2, a pair of connecting arms 13 connecting the upper column side bases 11 to the lower column side bases 12, and a guide member 14 that guides the erection of the upper column 1.

[0059] In more detail, the pair of upper column side bases 11 are composed of a pair of lower erection pieces 1b provided on the outer surfaces that become the lower surfaces of the upper column 1 when laid down, as shown in Figures 3 to 5. Note that the lower erection piece 1b has a thickness in the front-to-back direction X, as shown in Figures 4 and 5, and is formed in the shape of a generally rectangular flat plate when viewed from the front that is long in the longitudinal direction of the upper column 1.

[0060] 3 to 5, the pair of lower column side bases 12 are composed of a pair of upper erection pieces 2a provided on one of the outer surfaces of the lower column 2 facing each other in the width direction Y. As shown in FIGS. 4 and 5, the upper erection piece 2a has a thickness in the front-to-back direction X and is formed in the shape of a generally rectangular flat plate when viewed from the front that is long in the longitudinal direction of the lower column 2.

[0061] In addition, as shown in Figures 3 to 5, the pair of connecting arms 13 are strip-shaped plate materials having a thickness in the front-to-back direction X, and are formed to a length that connects the lower part of the upper column side base 11 and the upper part of the lower column side base 12 when the upper column 1 is upright.

[0062] The pair of connecting arms 13 are detachably attached to the upper column side base 11 and the lower column side base 12, and are pivotally connected to the upper column side base 11 and the lower column side base 12, respectively, with the forward / backward direction X as the rotation axis.

[0063] Specifically, as shown in FIG. 5, one end of the pair of connecting arms 13 in the longitudinal direction is attached to the upper column side base portion 11 of the upper column 1 via a bolt 13a and a nut 13b. Furthermore, as shown in Fig. 5, the other longitudinal ends of the pair of connecting arms 13 are attached to the lower column side base 12 of the lower column 2 via bolts 13c and nuts 13d. As shown in Fig. 5, the other ends of the connecting arms 13 are also pivotally connected to a guide member 14, which will be described later.

[0064] 4 and 5, the guide member 14 is disposed between the lower column side bases 12 so as to abut against the outer surface of the lower column 2. As shown in FIG. 5, the guide member 14 is composed of a guide base 15 attached to the lower column side base 12 and a sliding member 16 with a low friction coefficient attached to the upper end surface of the guide base 15.

[0065] As shown in Figure 5, the guide base 15 is arranged at a predetermined interval in the front-to-rear direction X and is integrally formed with a pair of side wall portions 15a attached to the lower column side base 12 and a top plate portion 15b connecting the upper ends of the side wall portions 15a.

[0066] Specifically, as shown in Figure 5, the pair of side wall portions 15a are flat plates having a thickness in the front-to-back direction X, and are attached to the main surfaces of the lower column side base portion 12 that face each other in the front-to-back direction X using bolts 13c and nuts 13d. As shown in Figure 6, the upper end surface of this side wall portion 15a is located higher than the upper end surface of the lower pillar 2, and is formed as an inclined surface that is inclined so that the further away it is from the lower pillar 2 in the width direction Y, the higher it is positioned.

[0067] As shown in FIG. 5, the top plate portion 15b is a flat plate having a thickness in the up-down direction, and connects the upper end surfaces of the side wall portions 15a in the front-rear direction X. As shown in FIG. 5, a sliding member 16 is attached to the top surface of the top plate portion 15b, along which the vicinity of the corner 1a of the upper column 1 slides.

[0068] The sliding member 16 is made of a self-lubricating, low-friction engineering plastic, such as monomer cast nylon. As shown in Figure 6, this sliding member 16 is plate-shaped with a thickness in the vertical direction, and is formed in a roughly semi-cylindrical shape when viewed from the front, with the upper surface slightly bulging upward so as to follow the rotation trajectory near the corner 1a of the upper pillar 1 that extends directly above the lower pillar 2.

[0069] Here, the rotation trajectory near the corner 1a of the upper pillar 1 is the rotation trajectory that is traced near the corner 1a of the upper pillar 1 when the upper pillar 1 rotates around the connection point between the connecting arm 13 and the lower pillar side base 12. More specifically, the upper surface of the sliding member 16 is formed in a shape that bulges most upward at approximately the center in the width direction Y when viewed from the front by combining planes with different inclinations.

[0070] 3, the winding mechanism 20 is disposed opposite the pivot mechanism 10 in the width direction Y. The winding mechanism 20 is composed of a wire connecting part 21 detachably attached to the upper pole 1, a metal wire 22 having one end connected to the wire connecting part 21, a winder 23 that winds up the wire 22, and a roller part 24 detachably attached to the lower pole 2.

[0071] Specifically, as shown in Fig. 3, the wire connecting part 21 is fastened and fixed to the lower erection piece 1b provided on the upper surface of the upper column 1 when the upper column 1 is laid down. In other words, the wire connecting part 21 is fastened and fixed to the lower erection piece 1b of the upper column 1 that faces the upper column base part 11.

[0072] The winder 23 is driven by, for example, a motor or electricity and has the function of feeding out the wire 22 and the function of winding up the wire 22. As shown in Fig. 3, the winder 23 is disposed at a position separated by a predetermined distance in the width direction Y from the connecting arm 13 across the lower pillar 2.

[0073] As shown in Figure 3, the roller part 24 is fastened and fixed to the upper erection piece 2a of the lower pillar 2 facing the lower pillar side base part 12. This roller part 24 has the function of guiding the feeding out of the wire 22 or the winding up of the wire 22.

[0074] 3, the roller unit 24 includes two guide rollers 24a that are arranged side by side in the vertical direction along the outer surface of the lower pillar 2 and are supported rotatably with the rotation axis in the front-rear direction X. The upper guide roller 24a of the two guide rollers 24a is disposed closer to the lower pillar 2 in the width direction Y than the lower guide roller 24a.

[0075] As shown in Figure 3, the wire 22 pulled out from the winding machine 23 passes under the lower side of the lower guide roller 24a and is routed toward the upper guide roller 24a, and then passes above the upper guide roller 24a and is connected to the wire connecting portion 21.

[0076] Next, the process of erecting the upper pillar 1 in a reclined state and connecting it to the lower pillar 2 using the erection support device 5 configured as described above will be described with reference to FIGS. In addition, Figure 7 shows an explanatory diagram illustrating the state of the upper column 1 rotating around the connection point between the lower column base 12 and the connecting arm 13, Figure 8 shows an explanatory diagram illustrating the state of the erection support device 5 during the erection process, and Figure 9 shows an explanatory diagram illustrating the state of the erection support device 5 when the upper column 1 is in an erected state.

[0077] First, the worker attaches the connecting arm 13, the guide member 14, and the roller portion 24 to the lower pillar 2, as shown in FIG. Thereafter, as shown in FIG. 2, workers use heavy machinery such as a crane to carry the upper column 1 onto the deck slab 4 in a state where it is laid so that its longitudinal direction is approximately horizontal. At this time, the worker adjusts the orientation of the upper column 1 and carries it in so that the front and rear surfaces of the upper column 1 in the laid position are approximately parallel to the front and rear surfaces of the lower column 2 and are at approximately the same position in the front-to-back direction X.

[0078] When the upper column 1 is brought onto the deck slab 4, the worker connects the connecting arm 13 to the upper column 1, as shown in Figure 3, and abuts the vicinity of the corner 1a of the upper column 1 against the sliding member 16 of the guide member 14. Furthermore, the worker attaches the wire connecting portion 21 to the upper pole 1, and connects the wire 22 drawn out from the winder 23 to the wire connecting portion 21, as shown in FIG.

[0079] Then, as shown in Figure 2, the worker connects the wire of a heavy machine such as a crane to the other end of the upper pole 1 (hereinafter referred to as the upper end), which is the upper end when in the upright position, thereby completing preparations for lifting the upper pole 1.

[0080] Once preparations for lifting the upper pole 1 are complete, the worker uses heavy machinery to begin lifting the upper end of the upper pole 1, as shown in Figure 7, and operates the winding machine 23 to begin winding the wire 22.

[0081] At this time, the worker adjusts the speed at which the winding machine 23 winds the wire 22 so that it is approximately the same as or slightly faster than the lifting speed of the upper pole 1, thereby generating tension in the wire 22.

[0082] When lifting of the upper end portion begins, the upper pillar 1 starts to rotate counterclockwise as viewed from the front, with the upper end portion facing upward, around the connecting point between the lower pillar side base 12 and the connecting arm 13, while being supported by the tension of the wire 22, as shown in Fig. 8. At this time, the upper pillar 1 rotates while the vicinity of the corner portion 1a slides on the sliding member 16 of the guide member 14, as shown in Fig. 6.

[0083] Then, as shown in Figure 9, the worker lifts the upper end of the upper pillar 1, which rotates around the connection point between the lower pillar base 12 and the connecting arm 13, until it stands up, and then stops lifting the upper pillar 1 and winding the wire 22.

[0084] At this time, the upper pillar 1 stands upright above the lower pillar 2 as shown in FIG. 9, and the orientation of each outer surface of the upper pillar 1 coincides with the orientation of each outer surface of the lower pillar 2. Thereafter, the worker removes the connecting arm 13, the wire connecting portion 21, and the roller portion 24 while the upper pillar 1 is in the lifted state.

[0085] Furthermore, the worker connects the lower erection piece 1b of the upper column 1 and the upper erection piece 2a of the lower column 2 using appropriate members, and then joins the lower column 2 and the upper column 1 by welding to form a steel column 3. In this way, the erection support device 5 of the first embodiment makes it possible to erect the upper pillar 1 lying down above the lower pillar 2, thereby supporting the erection of the upper pillar 1.

[0086] As described above, the setup support device 5 for the upper pillar 1 in Example 1 is a device that supports the setup of the upper pillar 1 that is carried in lying down so that the longitudinal direction is approximately horizontal. This installation support device 5 comprises a lower column side base 12 attached to the upper end of the lower column 2, an upper column side base 11 attached to the underside of the lower end of the upper column 1 when laid down, and a pivot part (connecting arm 13) that pivotally connects the lower column side base 12 and the upper column side base 11 with the horizontal direction as the axis of rotation.

[0087] According to this configuration, the setup support device 5 for the upper column 1 can erect the upper column 1 above the lower column 2 and support the setup of the upper column 1. Specifically, since the upper column 1 is connected to the lower column 2 via a pivot (connecting arm 13), the setup support device 5 for the upper column 1 can rotate the upper column 1 around the horizontal direction when the upper end of the upper column 1 is lifted. Therefore, the setup support device 5 for the upper column 1 can raise the upper column 1, which is in a reclined state, directly above the lower column 2.

[0088] At this time, since the upper column 1 is always connected to the lower column 2, the erection support device 5 for the upper column 1 can suppress the swaying movement of the upper column 1 that accompanies lifting of the upper end portion. Furthermore, since the upper column 1 is connected to the lower column 2, the installation support device 5 for the upper column 1 can prevent, for example, the lower end of the upper column 1 from falling and colliding with the lower column 2 or the floor surface during the process of lifting the upper end.

[0089] As a result, the setup support device 5 for the upper column 1 can safely erect the upper column 1 above the lower column 2 and support the erection of the upper column 1. Therefore, the setup support device 5 for the upper column 1 can erect the upper column 1 that has been carried in a lying state, not just at night, for example.

[0090] The pivot part is composed of a connecting arm 13 that pivotally connects the upper erection piece 2a of the lower pillar 2 and the lower erection piece 1b of the upper pillar 1. According to this configuration, the installation support device 5 for the upper column 1 can connect the lower column 2 and the upper column 1 with the connecting arm 13 without separately providing a lower column side base and an upper column side base.

[0091] Furthermore, the installation support device 5 for the upper column 1 can connect and disconnect the lower column 2 and the upper column 1 simply by attaching and detaching the connecting arm 13, thereby improving workability. As a result, the installation support device 5 for the upper column 1 can pivotally connect the lower column 2 and the upper column 1 with a simple configuration without impairing workability.

[0092] In addition, the installation support device 5 for the upper column 1 is attached to the lower column 2 and is equipped with a guide member 14 that guides the upper column 1 to directly above the lower column 2. According to this configuration, the setup support device 5 for the upper column 1 can reliably guide the upper column 1, which rotates around the horizontal direction, toward directly above the lower column 2. Therefore, the setup support device 5 for the upper column 1 can erect the upper column 1 reliably and efficiently.

[0093] The guide member 14 is provided with a sliding member 16 having a low coefficient of friction on the sliding surface on which the upper column 1 slides. With this configuration, the guide member 14 can guide the upper pillar 1 to directly above the lower pillar 2 more smoothly.

[0094] This allows the setup support device 5 for the upper column 1 to prevent unintended malfunctions caused by obstruction to the rotation of the upper column 1 or damage to the upper column 1 due to sliding with the guide member 14. Therefore, the setup support device 5 for the upper column 1 can more reliably support the safe erection of the upper column 1.

[0095] In addition, the guide member 14 is attached to the upper erection piece 2a of the lower pillar 2. According to this configuration, the installation support device 5 for the upper pillar 1 does not need to provide a separate portion on the lower pillar 2 for attaching the guide member 14.

[0096] Furthermore, the installation support device 5 for the upper pillar 1 can suppress positional deviation of the guide member 14 with respect to the connection point between the upper erection piece 2a of the lower pillar 2 and the connection arm 13. This allows the installation support device 5 for the upper column 1 to more stabilize the rotation trajectory of the upper column 1, thereby more reliably guiding the upper column 1 to directly above the lower column 2.

[0097] In addition, the installation support device 5 for the upper column 1 is equipped with a wire 22 having one end attached to the upper column 1 facing the upper column side base 11, a winding machine 23 that winds up the wire 22, and a roller unit 24 that is arranged along the outer surface of the lower column 2 facing the lower column side base 12 and guides the winding of the wire 22.

[0098] According to this configuration, the erection support device 5 for the upper column 1 can support the erection of the upper column 1 by winding up the wire 22, while preventing the upper column 1 from returning to its laid-down state by winding up the wire 22.

[0099] That is, the upper column 1 setup support device 5 can support the upper column 1 with its upper end lifted up by the tension of the wire 22. Therefore, the upper column 1 setup support device 5 can improve safety when setting up the upper column 1. [Example]

[0100] The construction support device 5 of Example 2 differs from the construction support device 5 of Example 1 described above in that it is further provided with a pair of dampers 30 that connect the upper pillar 1 and the lower pillar 2. The construction support device 5 of Example 2 will be described with reference to Fig. 10 which shows a front view of the construction support device 5 of Example 2.

[0101] In FIG. 10, the upper pillar 1 in the upright state is shown by a two-dot chain line, and the state of the damper 30 when the upper pillar 1 is upright is shown by a two-dot chain line. Moreover, the same components as those in the first embodiment are given the same reference numerals, and detailed description thereof will be omitted.

[0102] As shown in Figure 10, the erection support device 5 of Example 2 is equipped with the pivot mechanism 10 and winding mechanism 20 described in detail in Example 1, and a pair of dampers 30 that gently support the load on the lower component of the upper pillar 1 that increases as the pillar is erected.

[0103] The pair of dampers 30 are arranged opposite each other in the front-to-back direction X with the lower column 2 in between, one damper 30 connecting the front surface of the upper column 1 and the front surface of the lower column 2, and the other damper 30 connecting the back surface of the upper column 1 and the back surface of the lower column 2.

[0104] As shown in FIG. 10, the damper 30 is, for example, a hydraulic damper made up of a cylinder 30a and a piston rod 30b, and is configured to gradually absorb a pressure load and contract, and to extend against a tensile load.

[0105] As shown in Figure 10, the damper 30 is positioned so that it is most extended when the upper column 1 and the lower column 2 are connected in a reclined position, and is most contracted when the upper column 1 and the lower column 2 are connected in an upright position.

[0106] Specifically, as shown in FIG. 10, the upper end of the cylinder 30a of the damper 30 is attached to the lower erection piece 1b of the upper column 1 via the upper column mounting member 31, and the lower end of the piston rod 30b is attached to the upper erection piece 2a of the lower column 2 via the lower column mounting member 32. The damper 30 is connected to the upper column mounting member 31 and the lower column mounting member 32 so as to be rotatable about the rotation axis in the front-rear direction X.

[0107] When the upper column 1 is erected using such a construction support device 5, the damper 30 rotates counterclockwise when viewed from the front around the connection point with the lower column mounting member 32, and the piston rod 30b is accommodated in the cylinder 30a, causing the biasing force on the upper column 1 to gradually increase.

[0108] As a result, the upper column 1 rotates counterclockwise as viewed from the front around the connection point between the lower column base 12 and the connecting arm 13 while resisting the biasing force of the damper 30. In this way, the erection support device 5 of Example 2 supports the erection of the upper column 1 while using the damper 30 to absorb the downward load of the upper column 1, which increases as the column is erected.

[0109] When the upper column 1 starts to tip over so as to return to its laid-down state, a tensile load acts on the damper 30, causing the damper 30 to extend while resisting the tensile load. As a result, the damper 30, in cooperation with the heavy equipment lifting the upper column 1, slows down the tipping speed of the upper column 1 and prevents the upper column 1 from tipping over.

[0110] As described above, the installation support device 5 for the upper column 1 in Example 2 can achieve the same effect as in Example 1 described above, since the upper column side base 11 of the upper column 1 and the lower column side base 12 of the lower column 2 are connected by the connecting arm 13.

[0111] Furthermore, the installation support device 5 for the upper column 1 is equipped with a damper 30 that prevents the upper column 1 from tipping over by extending it. According to this configuration, the erection support device 5 for the upper pillar 1 can prevent the upper pillar 1 from tipping over and returning to its laid-down state during erection by the damper 30.

[0112] Furthermore, by using the damper 30 that applies a biasing force to the upper column 1 and contracts as the upper column 1 is erected, the installation support device 5 for the upper column 1 can prevent the upper column 1 from coming into contact with the lower column 2 with force when the rotating upper column 1 comes into contact with the lower column 2. Therefore, the erection support device 5 for the upper pillar 1 can more reliably support the safe erection of the upper pillar 1. [Example]

[0113] A construction support device 6 of Example 3, which has a different configuration from the construction support device 5 of Example 1 described above, will be described with reference to Figures 11 to 15. In Example 3, it is assumed that a lower erection piece is not provided on the upper column 1 and an upper erection piece is not provided on the lower column 2.

[0114] 11 shows a front view of the construction support device 6 in Example 3, FIG. 12 shows an external perspective view of the construction support device 6 as viewed diagonally downward, and FIG. 13 shows an external perspective view of the construction support device 6 as viewed diagonally upward.

[0115] 14 shows an exploded perspective view of the first pivot portion 70 and the second pivot portion 80, and FIG. 15 shows a cross-sectional view taken along the line AA in FIG. In addition, in FIG. 13, the upper pillar 1 and the lower pillar 2 are shown by two-dot chain lines for clarity of illustration. Moreover, the same components as those in the first embodiment are given the same reference numerals, and detailed description thereof will be omitted.

[0116] As shown in Figures 11 and 12, the installation support device 6 of Example 3 comprises a pair of support members 40 placed on the deck slab 4 close to the outer surface of the lower column 2, a lower column side base 50 attached to the lower column 2, and an upper column side base 60 attached to the upper column 1. Furthermore, as shown in FIGS. 11 and 12, the construction support device 6 is provided with a first pivot part 70 and a second pivot part 80 that pivotally connect the lower column side base part 50 and the upper column side base part 60.

[0117] In detail, as shown in Figures 11 to 13, the pair of support members 40 are arranged at a predetermined distance in the front-to-rear direction X, and abut against the underside of the lower column side base 50 described later, thereby restricting downward movement of the lower column side base 50.

[0118] Specifically, the support member 40 is formed in a cylindrical shape extending in the vertical direction, as shown in Figures 11 to 13. The support member 40 is formed with a vertical length that allows a first pivot portion 70, which will be described later, to be positioned at a desired vertical position.

[0119] 11 to 13, the lower column side base 50 is attached to the upper end of the lower column 2 so as to clamp it in the width direction Y. As shown in FIGS. 11 to 13, this lower column side base 50 is made up of a pair of lower column clamping members 51 arranged opposite each other in the width direction Y with the lower column 2 in between, a pair of cut bolts 52 connecting the lower column clamping members 51, and four nuts 53 threaded onto both ends of the cut bolts 52.

[0120] 11 to 13, the lower column clamping member 51 is a channel steel extending in a predetermined direction, and is arranged so that the predetermined direction is the front-to-rear direction X. The lower column clamping member 51 is arranged so that the web faces the lower column 2 side.

[0121] The web of this lower pillar clamping member 51 is formed with through holes (not shown) at both ends in a predetermined direction, through which cut bolts 52 are inserted. Furthermore, as shown in FIGS. 12 to 14, a rubber plate 54 having a predetermined thickness is attached to the web of the lower post clamping member 51 so as to be interposed between the lower post 2 and the rubber plate 54 .

[0122] Such a pair of lower column clamping members 51 are attached to the lower column 2 by screwing nuts 53 onto cut bolts 52 inserted into the through holes, with the rubber plates 54 abutting the outer surfaces of the lower columns 2, as shown in Figures 11 to 13.

[0123] 11 to 13, the upper column side base 60 is attached to the lower end of the upper column 1 in a laid-down state so as to sandwich it in the vertical direction. As shown in FIGS. 11 to 13, this upper column side base 60 is composed of a pair of upper column clamping members 61 arranged opposite each other in the vertical direction with the upper column 1 in a laid-down state sandwiched between them, a pair of threaded bolts 62 connecting the upper column clamping members 61, and four nuts 63 threaded onto both ends of the threaded bolts 62.

[0124] 11 to 13, the upper column clamping member 61 is a channel steel extending in a predetermined direction, and is arranged so that the predetermined direction is the front-to-rear direction X. The upper column clamping member 61 is arranged so that the web faces the upper column 1 side.

[0125] The web of this upper pillar clamping member 61 is formed with through holes (not shown) at both ends in a predetermined direction, through which cut bolts 62 are inserted. Furthermore, as shown in FIGS. 12 to 14, the upper pole clamping member 61 has a rubber plate 64 having a predetermined thickness attached to the web so as to be interposed between the upper pole 1 and the rubber plate 64.

[0126] Such a pair of upper column clamping members 61 are attached to the upper column 1 by screwing a nut 63 onto a cut bolt 62 inserted into the through hole, with the rubber plate 64 abutting the outer surface of the upper column 1, as shown in Figures 11 to 13.

[0127] 11 and 12, the first pivot part 70 is disposed at approximately the center of the upper pillar 1 in the front-to-rear direction X, and pivotally connects the upper pillar-side base part 60 and the lower pillar-side base part 50 with the horizontal axis of rotation as the axis of rotation. The first pivot part 70 is configured so that the horizontal axis of rotation is located above the upper end of the lower pillar 2.

[0128] As shown in Figure 14, this first pivot part 70 is configured in a so-called clevis structure, consisting of an upper column side joint part 71 attached to the upper column side base part 60, a lower column side joint part 72 attached to the lower column side base part 50 via a second pivot part 80 described later, and a pin 73 inserted into the upper column side joint part 71 and the lower column side joint part 72.

[0129] 14, the upper column side joint portion 71 is formed of a flat flange portion 71a joined to the web of the upper column clamping member 61, and a flat main body portion 71b that has a thickness in the front-rear direction X and stands upright from the flange portion 71a. Note that a through hole 71c is formed in the main body portion 71b along the front-rear direction X, through which a pin 73 is inserted.

[0130] 14, the lower column-side joint part 72 is formed of a flat flange part 72a having a thickness in the vertical direction, and a pair of flat main body parts 72b standing upright from the flange part 72a at a predetermined interval in the front-rear direction X. Note that the main body part 72b is formed with a through hole 72c opening in the front-rear direction X, through which the pin 73 is inserted.

[0131] Such a first pivot part 70 forms a clevis structure by inserting a pin 73 into the through hole 71c of the upper column side joint part 71 and the through hole 72c of the lower column side joint part 72, with the main body part 71b of the upper column side joint part 71 interposed between the main body parts 72b of the lower column side joint part 72.

[0132] In addition, as shown in Figures 12 and 13, the second pivot part 80 is positioned approximately in the center of the lower column 2 in the front-to-back direction X, and pivotally connects the upper column side base part 60 and the lower column side base part 50 with the vertical direction as the rotation axis.

[0133] As shown in Figures 12 to 14, this second pivot part 80 is composed of an axle 81 attached to the upper column side base 60 via the first pivot part 70, a cylindrical body 82 through which the axle body 81 is inserted, and an upper bracket 83 and a lower bracket 84 that attach the cylindrical body 82 to the lower column side base 50.

[0134] The second pivot portion 80 is configured such that the shaft body 81 is detachable from the cylindrical body 82. Specifically, as shown in FIG. 14, the shaft body 81 is a substantially cylindrical member extending in the vertical direction, and its upper end surface is joined to the lower surface of the flange portion 72a of the first pivot portion .

[0135] 14 and 15, the cylindrical body 82 has an inner diameter slightly larger than the diameter of the shaft body 81 and is formed into a generally cylindrical shape extending in the vertical direction. As shown in Figures 14 and 15, the cylindrical body 82 is divided into two at a vertical cross section along the front-rear direction X passing through the radial center, and is configured to be openable and closable with the vertical direction as the rotation axis.

[0136] More specifically, as shown in Figures 14 and 15, the cylindrical body 82 is composed of a first semi-cylindrical portion 85 that is semi-circular in plan view and attached to the lower column side base 50, a second semi-cylindrical portion 86 that is semi-circular in plan view and supported on the first semi-cylindrical portion 85 so that it can be opened and closed freely, and a bolt 87 and a nut 88 that fasten and fix the second semi-cylindrical portion 86 to the first semi-cylindrical portion 85.

[0137] As shown in Figures 14 and 15, the first semi-cylindrical portion 85 is formed in an approximately semi-circular shape in a plan view with an opening in the width direction Y away from the lower pillar 2, and the second semi-cylindrical portion 86 is rotatably connected to one end in the circumferential direction. Furthermore, as shown in FIGS. 14 and 15, the first semi-cylindrical portion 85 has two flange portions 85a provided on the other circumferential end side thereof, the flange portions 85a projecting at a predetermined interval in the up-down direction.

[0138] 14 and 15, the two flange portions 85a are flat plates having a thickness in the width direction Y, and protrude in the radial direction of the cylindrical body 82. Furthermore, through holes 85b through which bolts 87 are inserted are formed in the flange portions 85a.

[0139] As shown in Figures 14 and 15, the second semi-cylindrical portion 86 is formed in an approximately semi-circular shape in a plan view with an opening in the width direction Y toward the lower pillar 2, and one end in the circumferential direction is rotatably connected to the first semi-cylindrical portion 85. Furthermore, as shown in FIGS. 14 and 15, the second semi-cylindrical portion 86 has two flange portions 86a provided at the other end in the circumferential direction, which are protruded at a predetermined interval in the up-down direction.

[0140] 14 and 15, the two flange portions 86a are flat plates having main surfaces that come into contact with the flange portions 85a of the first semi-cylindrical portion 85, and protrude in the radial direction of the cylindrical body 82. Furthermore, the flange portions 86a are each formed with a through hole 86b through which a bolt 87 is inserted.

[0141] As shown in Figure 14, the upper bracket 83 is a plate material having a thickness in the vertical direction, and one end side in the width direction Y is joined to the outer peripheral surface of the first semi-cylindrical portion 85, and the other end side in the width direction Y is joined to the upper surface of the upper flange of the lower column clamping member 51.

[0142] As shown in Figure 14, the lower bracket 84 is a plate material having a thickness in the vertical direction, and one end side in the width direction Y is joined to the outer peripheral surface of the first semi-cylindrical portion 85, and the other end side in the width direction Y is joined to the upper surface of the lower flange of the lower column clamping member 51.

[0143] Next, the process of erecting the upper pillar 1 in a reclined state and connecting it to the lower pillar 2 using the erection support device 6 configured as described above will be described with reference to FIGS. Note that Figure 16 is an explanatory diagram illustrating the state in which the upper column 1 is delivered, with Figure 16(a) showing a plan view of the upper column 1 in the delivered state and Figure 16(b) showing an oblique view of the upper column 1 in the delivered state.

[0144] Furthermore, FIG. 17 shows an explanatory diagram illustrating the state of the upper pillar 1 rotating around the first pivot portion 70. In addition, Figure 18 is an explanatory diagram illustrating the state of the upper pillar 1 rotating around the second pivot part 80, where Figure 18(a) shows an oblique view of the state of the upper pillar 1 before rotation, and Figure 18(b) shows an oblique view of the upper pillar 1 after rotation.

[0145] First, the worker attaches the lower column side base 50 and the cylindrical body 82 of the second pivot part 80 to the upper end of the lower column 2 protruding from the deck slab 4. Specifically, as shown in FIGS. 11 and 12, the worker places the pair of support members 40 on the deck slab 4 in proximity to the outer surfaces of the lower columns 2 in the width direction Y.

[0146] Furthermore, the worker abuts one of the lower column clamping members 51 to which the cylindrical body 82 of the second pivot part 80 is joined against one of the outer surfaces of the opposing lower column 2 in the width direction Y, and places it on the upper surface of the support member 40 so that the cylindrical body 82 is positioned approximately in the center of the lower column 2 in the front-to-back direction X.

[0147] Thereafter, the worker abuts the other lower column clamping member 51 against the other outer surface of the lower column 2 so as to face the one lower column clamping member 51 placed on the support member 40. The worker then connects the pair of lower column clamping members 51 using cut bolts 52 and nuts 53, thereby attaching the lower column side base 50 and the tubular body 82 of the second pivot part 80 to the lower column 2.

[0148] Once the lower column base 50 is attached to the lower column 2, the worker uses a heavy machine such as a crane to carry the upper column 1 onto the deck slab 4 in a state where it is laid so that its longitudinal direction is approximately horizontal. At this time, the worker carries it in to a position above the upper end of the lower column 2 and so that the lower end of the upper column 1 is slightly spaced horizontally from the outer surface of the lower column 2. In Example 3, as shown in FIG. 16, the upper column 1 is brought in with its longitudinal direction in a lying state intersecting the width direction Y.

[0149] Once the upper column 1 is brought onto the deck slab 4, workers attach the upper column side base 60, the first pivot part 70, and the shaft body 81 of the second pivot part 80 to the lower end of the upper column 1 in a lying position. Specifically, as shown in Figures 11 and 14, the worker places one upper column clamping member 61 on the upper surface (upper outer surface) of the upper column 1 in the laid state and brings it into contact with it. Furthermore, the worker brings the other upper column clamping member 61, to which the first pivot part 70 is joined, into contact with the lower surface (lower outer surface) of the upper column 1 in the laid state, so that the first pivot part 70 is positioned approximately in the center in the front-to-rear direction X.

[0150] Then, the worker connects a pair of upper column clamping members 61 using cut bolts 62 and nuts 63, thereby attaching the upper column side base 60, the first pivot part 70, and the shaft body 81 of the second pivot part 80 to the upper column 1.

[0151] Once the upper column side base 60 has been attached to the upper column 1, the worker uses heavy machinery to move the upper column 1 and inserts the shaft 81 of the upper column 1 into the cylindrical body 82 of the lower column 2, thereby connecting the upper column 1 and the lower column 2. Specifically, the worker removes the bolts 87 and nuts 88 of the cylindrical body 82 and opens the second semi-cylindrical portion 86, and then uses heavy machinery to move the upper pillar 1 horizontally to accommodate the shaft body 81 in the first semi-cylindrical portion 85. Thereafter, the worker closes the second semi-cylindrical portion 86 and fastens and fixes the second semi-cylindrical portion 86 to the first semi-cylindrical portion 85 using the bolts 87 and nuts 88, completing preparations for lifting the upper pillar 1.

[0152] When preparations for lifting the upper pillar 1 are complete, the worker connects heavy machinery such as a crane to the upper end of the upper pillar 1 and then begins lifting the upper end of the upper pillar 1. When the upper end portion is lifted, the upper pillar 1 starts to rotate counterclockwise around the pin 73 of the first pivot portion 70 as the center of rotation so that the upper end portion faces upward when viewed from the axial direction of the pin 73, as shown in Fig. 17. After that, the worker lifts the upper end portion until the upper pillar 1 rotating around the first pivot portion 70 stands up, as shown in Fig. 18(a), and then stops lifting the upper pillar 1.

[0153] In this case, the upper pillar 1 was erected from a lying position so that its longitudinal direction intersected the width direction Y, so that the orientation of the outer surface of the upper pillar 1 in the upright position did not match the orientation of the outer surface of the lower pillar 2, as shown in Figure 18(a).

[0154] Therefore, as shown in FIG. 18(b), the worker rotates the upper column 1 horizontally using heavy machinery or the like, so that the orientation of the outer surface of the upper column 1 matches the orientation of the outer surface of the lower column 2. At this time, the upper pillar 1 moves to directly above the lower pillar 2 while rotating horizontally around the cylindrical body 82 of the second pivot portion 80 .

[0155] Thereafter, with the upper column 1 in a lifted state, the worker opens the second semi-cylindrical portion 86 of the second pivot portion 80, and then removes the upper column side base 60, the first pivot portion 70, and the shaft body 81 of the second pivot portion 80 from the upper column 1. Furthermore, the worker removes the lower column side base 50 and the cylindrical body 82 of the second pivot portion 80 from the lower column 2, and then removes the support member 40.

[0156] Then, the worker joins the lower column 2 and the upper column 1 by welding to form the steel column 3. In this way, the erection support device 6 of the third embodiment makes it possible to erect the upper pillar 1 lying down above the lower pillar 2, thereby supporting the erection of the upper pillar 1.

[0157] As described above, the upper pillar 1 installation support device 6 in Example 3 is a device that supports the installation of the upper pillar 1 that is carried in lying down so that the longitudinal direction is approximately horizontal.

[0158] This installation support device 6 comprises a lower column side base 50 attached to the upper end of the lower column 2, an upper column side base 60 attached to the underside of the lower end of the upper column 1 when laid down, and a first pivot part 70 that pivotally connects the lower column side base 12 and the upper column side base 11 with the horizontal direction as the axis of rotation.

[0159] According to this configuration, the setup support device 6 for the upper column 1 can support the setup of the upper column 1 by erecting the upper column 1 above the lower column 2. Specifically, because the upper column 1 is connected to the lower column 2 via the first pivot part 70, the setup support device 6 for the upper column 1 can rotate the upper column 1 around the horizontal direction when the upper end of the upper column 1 is lifted up. Therefore, the setup support device 6 for the upper column 1 can erect the upper column 1, which is in a reclined state, directly above the lower column 2.

[0160] At this time, since the upper column 1 is always connected to the lower column 2, the erection support device 6 for the upper column 1 can suppress the swaying movement of the upper column 1 that accompanies lifting of the upper end portion. Furthermore, since the upper column 1 is connected to the lower column 2, the installation support device 6 for the upper column 1 can prevent, for example, the lower end of the upper column 1 from falling and colliding with the lower column 2 or the floor surface during the process of lifting the upper end.

[0161] As a result, the setup support device 6 for the upper column 1 can safely erect the upper column 1 above the lower column 2 and support the erection of the upper column 1. Therefore, the setup support device 6 for the upper column 1 can erect the upper column 1 that has been carried in a lying state, not just at night, for example.

[0162] The setup support device 6 for the upper column 1 also includes a second pivot part 80 that pivotally connects the lower column side base part 50 and the first pivot part 70 with the vertical direction as the rotation axis. According to this configuration, the setup support device 6 for the upper column 1 can rotate the erected upper column 1 horizontally around the second pivot part 80 and position it directly above the lower column 2.

[0163] Therefore, the installation support device 6 for the upper column 1 can easily align the orientation of the upper column 1 with the orientation of the lower column 2 in the rotation direction with the vertical direction as the rotation center. This makes it unnecessary for the installation support device 6 for the upper column 1 to rotate the upper column 1 in a laid-down state in advance in accordance with the orientation of the lower column 2 so that the orientation of the upper column 1 matches the orientation of the lower column 2 when the upper column 1 is erected.

[0164] The second pivot portion 80 is made up of a shaft body 81 that extends in the vertical direction, and a cylindrical body 82 that also extends in the vertical direction and through which the shaft body 81 is inserted. The cylindrical body 82 is divided into two parts in a vertical cross section passing through the radial center, and is configured to be openable and closable with the vertical direction as the rotation axis.

[0165] According to this configuration, the setup support device 6 for the upper column 1 can insert the shaft body 81 horizontally into the cylinder body 82. Therefore, the setup support device 6 for the upper column 1 can easily connect the upper column 1, to which the upper column side base 60 and the first pivot part 70 are attached, to the lower column 2, to which the lower column side base 50 is attached in advance.

[0166] In this case, the setup support device 6 for the upper column 1 can reduce the height at which the upper column 1 in a laid-down state is lifted compared to when the shaft body 81 is inserted into the cylinder body 82 from above and below. Therefore, the setup support device 6 for the upper column 1 can safely connect the lower column 2 and the upper column 1.

[0167] The lower column side base portion 50 and the upper column side base portion 60 are configured to sandwich the lower column 2 and the upper column 1, respectively. According to this configuration, the installation support device 6 for the upper column 1 can attach the lower column side base 50 and the upper column side base 60 to the outer surface of the lower column 2 and the outer surface of the upper column 1 where no erection piece is provided.

[0168] In addition, the installation support device 6 for the upper column 1 is disposed across the lower column base 50 and the floor surface, and is equipped with a support member 40 that supports the lower column base 50 from below. According to this configuration, the installation support device 6 for the upper column 1 can prevent the lower column side base 50, which clamps the lower column 2, from shifting downward due to the weight of the upper column 1, using the support member 40.

[0169] As a result, the position of the first pivot part 70 in the vertical direction is stabilized in the setup support device 6 for the upper column 1, and the rotation trajectory of the upper column 1 rotating around the first pivot part 70 can be further stabilized. Therefore, the setup support device 6 for the upper column 1 can erect the upper column 1 directly above the lower column 2 more reliably. [Example]

[0170] A construction support device 7 of Example 4, which has a different configuration from the construction support device 6 of Example 3 described above, will be described with reference to FIGS. 19 to 21. FIG. The same components as those in the third embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. FIG. 19 shows a front view of the construction support device 7 in the fourth embodiment.

[0171] Furthermore, Figure 20 is an explanatory diagram outlining the first pivot part 100 and the second pivot part 110, where Figure 20(a) shows a side view of the first pivot part 100 and the second pivot part 110 in a disassembled state, and Figure 20(b) shows a front view of the first pivot part 100 and the second pivot part 110 in a disassembled state.

[0172] In addition, Figure 21 is an explanatory diagram outlining the fall prevention mechanism 120, where Figure 21(a) shows a front view of the fall prevention mechanism 120 in its most contracted state, and Figure 21(b) shows a front view of the fall prevention mechanism 120 in its most extended state.

[0173] In addition, in FIG. 19 and FIG. 20(b), in order to clarify the illustration of the first pivot part 100 and the second pivot part 110, the illustration of the lower erection piece 1b of the upper pillar 1 adjacent to the first pivot part 100 and the upper erection piece 2a of the lower pillar 2 adjacent to the second pivot part 110 is omitted.

[0174] As shown in Figure 19, the construction support device 7 of Example 4 includes a jack 90 that supports the lower end of the upper column 1 from below, and a first pivot part 100 and a second pivot part 110 that pivotally connect the lower column 2 and the upper column 1. Furthermore, as shown in FIG. 19, the construction support device 7 is provided with a fall prevention mechanism 120 that prevents the upper pillar 1 from falling over by extending it.

[0175] 19, the jack 90 is placed on the upper surface of the deck 4 between the lower column 2 and a locking member 130 (described later). This jack 90 is, for example, a hydraulic jack, and is configured to support the upper column 1 in a laid-down state from below, and to be able to press the upper column 1 upward from below once the upper end of the column has begun to be lifted.

[0176] 19 and 20, the first pivot part 100 is disposed at approximately the center of the upper pillar 1 in the front-to-rear direction X, and pivotally connects the upper pillar 1 and the lower pillar 2 with the horizontal axis of rotation as the axis of rotation. The first pivot part 100 is configured so that the horizontal axis of rotation is located above the upper end of the lower pillar 2.

[0177] As shown in Figure 20, this first pivot part 100 is configured in a so-called clevis structure, consisting of an upper column side joint part 101 attached to the upper column 1, a lower column side joint part 102 attached to the lower column 2 via a second pivot part 110 described later, and a pin 103 inserted into the upper column side joint part 101 and the lower column side joint part 102.

[0178] More specifically, as shown in FIG. 20, the upper column side joint part 101 is a flat plate having a thickness in the front-rear direction X that functions as an upper column side base part, and is directly joined to the outer surface that becomes the lower surface of the upper column 1 in the laid state. Note that the upper column side joint part 101 is joined between the lower erection pieces 1b provided on the lower surface of the upper column 1 in the laid state. As shown in FIG. 20, the lower column side joint portion 102 has the same configuration as the lower column side joint portion 72 of the third embodiment, and therefore a detailed description thereof will be omitted.

[0179] 19 and 20, the second pivot part 110 is disposed approximately in the center of the lower pillar 2 in the front-rear direction X, and connects the upper pillar 1 and the lower pillar 2 so as to be pivotable about the vertical direction as a rotation axis. As shown in Figure 20, this second pivot part 110 has approximately the same configuration as the second pivot part 80 of Example 3, and is composed of an axle body 111 attached to the upper column 1 via the first pivot part 100, and a cylindrical body 112 through which the axle body 111 is inserted and which is attached to the lower column 2 via a lower column side base 113.

[0180] More specifically, as shown in Fig. 20, the cylindrical body 112 is supported by a lower column side base 113 directly joined to the outer surface of the lower column 2. The lower column side base 113 is a flat plate having a thickness in the front-to-rear direction X, and is joined between the upper erection pieces 2a provided on the outer surface of the lower column 2.

[0181] In addition, as shown in Figure 19, the fall prevention mechanism 120 is composed of an expandable member 121 whose one end is pivotally connected to the upper column 1, and a locking member 130 placed on the upper surface of the deck slab 4 located below the upper column 1 in a reclined position. As shown in FIG. 19, one end of the expandable member 121 is connected to the outer surface of the upper column 1, which is the lower surface of the upper column 1 when the column is laid down, between the lower and upper ends of the column.

[0182] The expandable member 121 connects three hollow columnar members with different cross-sectional shapes in an expandable manner, and is configured to maintain the expanded or contracted state. Specifically, as shown in Figure 21, the expandable member 121 is composed of a first columnar member 122, a second columnar member 123, and a third columnar member 124 of a truss structure connected so as to be expandable and contractible in a predetermined direction, a joint portion 125 provided at one end of the first columnar member 122, and an engaged portion 126 provided at one end of the third columnar member 124.

[0183] The first columnar member 122, the second columnar member 123, and the third columnar member 124 are formed as columns with a substantially rectangular cross section, with the cross-sectional shapes increasing in size in this order, and with a predetermined direction as the longitudinal direction. As shown in Fig. 21, the first columnar member 122, the second columnar member 123, and the third columnar member 124 are configured to be expandable and contractible in a predetermined direction by the first columnar member 122 being housed in the second columnar member 123, and the second columnar member 123 being housed in the third columnar member 124.

[0184] Furthermore, although detailed illustration is omitted, the first pillar 122 and the second pillar 123 are connected via, for example, a ratchet mechanism, and are configured to be able to maintain a contracted state and an extended state. Similarly, the second pillar 123 and the third pillar 124 are connected via, for example, a ratchet mechanism, and are configured to be able to maintain a contracted state and an extended state.

[0185] As shown in Fig. 21, the joint part 125 is provided at one longitudinal end of the expandable member 121 and at one end of the first columnar member 122. As shown in Fig. 19, this joint part 125 is pivotally connected to a connecting flange 127 provided on the underside of the upper column 1 in the laid-down state.

[0186] 21, the locked portion 126 is provided at the other longitudinal end of the expandable member 121 and at the other end of the third columnar member 124. Although not shown in detail, the locked portion 126 is made up of a pair of flat plates standing in the longitudinal direction of the expandable member 121 and a pin 126a that penetrates the flat plates in the front-rear direction X. As shown in the enlarged view of part A in FIG. 19, the locked part 126 is configured so that the pin 126a is pivotably locked to a locking member 130, which will be described later.

[0187] 19, the locking member 130 is placed below the connecting flange 127 of the upper pillar 1 so that its approximate center in the longitudinal direction is located. As shown in Fig. 19, this locking member 130 is an elongated member that is long in the longitudinal direction of the upper pillar 1 in its laid state, and is formed with a U-shaped cross section that is open at the top, and is made up of a pair of side walls 131 that face each other in the front-to-rear direction X with a gap wider than that of the locked portions 126, and a roughly flat bottom (not shown) that connects the lower parts of the side walls 131.

[0188] 19, a plurality of protruding portions 131a protruding upward are provided on the side wall 131 of the locking member 130. The protruding portions 131a are adapted to lock onto the pins 126a of the locked portion 126 of the expandable member 121. The protruding portions 131a are spaced apart at predetermined intervals in the width direction Y.

[0189] As shown in the enlarged view of part A in Figure 19, when viewed from the front, this protrusion part 131a is formed in a shape such that the edge on the lower column 2 side is approximately vertical and the edge opposite the edge on the lower column 2 side in the width direction Y is inclined diagonally upward toward the lower column 2. In other words, the locking member 130 is formed in a shape that restricts movement of the expandable member 121 in the width direction Y away from the lower column 2, and allows movement of the expandable member 121 in the width direction Y toward the lower column 2.

[0190] Next, the process of erecting the upper pillar 1 in a reclined state and connecting it to the lower pillar 2 using the erection support device 7 configured as described above will be described with reference to FIGS. 22 and 23. FIG. FIG. 22 is an explanatory diagram illustrating the state of the erection support device 7 during the erection process, and FIG. 23 is an explanatory diagram illustrating the state of the erection support device 7 when the upper pillar 1 is erected.

[0191] In addition, in FIGS. 22 and 23, in order to clearly illustrate the first pivot part 100 and the second pivot part 110, the lower erection piece 1b of the upper pillar 1 adjacent to the first pivot part 100 and the upper erection piece 2a of the lower pillar 2 adjacent to the second pivot part 110 are omitted from the illustration.

[0192] First, the worker inserts the shaft body 111, to which the lower column side joint part 102 of the first pivot part 100 is joined, into the cylindrical body 112 of the second pivot part 110. Next, the worker places the jack 90 and the locking member 130 in advance on the deck slab 4 located below the upper column 1 in a reclined state.

[0193] Then, the worker uses heavy machinery to carry the upper column 1 in a lying position onto the deck slab 4 and brings the upper column 1 closer to the lower column 2 so that the upper column side joint part 101 is positioned at a position spaced apart in the width direction Y from the lower column side joint part 102. Then, using heavy machinery, the worker moves the upper column 1 in a laid-down position in the width direction Y to overlap the lower column side joint part 102 and the upper column side joint part 101, and then inserts the pin 103 to connect the lower column side joint part 102 and the upper column side joint part 101.

[0194] At this time, the worker supports the vicinity of the lower end of the upper pillar 1 in the laid state with a jack 90, as shown in FIG. When the upper pillar 1 is supported by the jack 90, the worker places the expandable member 121 in its most contracted state on the connecting flange 127 of the upper pillar 1, as shown in Figure 19. Furthermore, the worker engages the locked portion 126 of the expandable member 121 near the end of the locking member 130 that is away from the lower pillar 2, completing preparations for lifting the upper pillar 1.

[0195] When preparations for lifting the upper pillar 1 are complete, the worker connects a heavy machine such as a crane to the upper end of the upper pillar 1 and then starts lifting the upper end of the upper pillar 1. At this time, the worker operates the jack 90 to press the upper pillar 1 from below, thereby assisting the upper pillar 1 in starting to rotate.

[0196] When the upper end portion is lifted, the upper pillar 1 starts to rotate counterclockwise as viewed from the front, with the upper end portion facing upward, around the first pivot portion 100 as the center, as shown in FIG. At this time, the expandable member 121 rotates clockwise when viewed from the front so as to rise up around the pin 126a of the locked portion 126 as the center.

[0197] Furthermore, as shown in FIG. 22, the expandable member 121 is extended by a tensile load applied to the joint 125, with the second columnar member 123 being pulled out from the third columnar member 124 and the first columnar member 122 being pulled out from the second columnar member 123.

[0198] When the upper end of the upper column 1 is further lifted, the telescopic member 121, which is in its most extended state, begins to rotate toward the lower column 2 around the connection point between the joint portion 125 and the connecting flange 127 of the upper column 1, as shown in Figures 22 and 23, as the engaged portion 126 disengages from the protruding portion 131a of the engaging member 130. At this time, the expandable member 121 rotates so that the locked portions 126 move toward the lower pillar 2 while being sequentially locked by the adjacent protruding portions 131a.

[0199] When the upper pillar 1 is erected directly above the lower pillar 2, the telescopic member 121 is in its most extended state, as shown in Figure 23, with the lower end, the engaged portion 126, engaged near the end of the engaging member 130 closest to the lower pillar 2.

[0200] The worker then welds the lower column 2 and the upper column 1 together to form the steel column 3, and melts down the first pivot part 100 and the second pivot part 110 to separate them from the upper column 1 and the lower column 2, respectively. In this way, the erection support device 7 of the fourth embodiment makes it possible to erect the upper pillar 1 lying down above the lower pillar 2, thereby supporting the erection of the upper pillar 1.

[0201] As described above, the installation support device 7 for the upper column 1 in Example 4 is equipped with a first pivot part 100 whose rotation axis is in the horizontal direction and a second pivot part 110 whose rotation axis is in the vertical direction, and therefore can achieve the same effects as those of Example 3 described above.

[0202] Furthermore, the installation support device 7 for the upper pillar 1 is provided with a jack 90 that supports the lower end of the upper pillar 1 in a laid state from below. According to this configuration, the load applied to the first pivot part 100 can be reduced by the jack 90, and the setup support device 7 for the upper column 1 can reduce the sliding resistance of the first pivot part 100. As a result, the setup support device 7 for the upper column 1 can smoothly start rotating the upper column 1 around the first pivot part 100 when the upper end part of the upper column 1 is lifted up.

[0203] In addition, the setup support device 7 for the upper column 1 is equipped with a fall prevention mechanism 120 that prevents the upper column 1 from falling over by extending it. According to this configuration, the erection support device 7 for the upper pillar 1 can prevent the upper pillar 1 from tipping over so as to return to its laid-down state during erection by the tipping prevention mechanism 120. Therefore, the erection support device 7 for the upper pillar 1 can more reliably support the safe erection of the upper pillar 1.

[0204] In addition, the fall prevention mechanism 120 has one end pivotally connected to the surface of the upper column 1 on which the upper column side joint 101 is provided, and is equipped with an expansion / contraction member 121 that can maintain an expansion / contraction state. Furthermore, the fall prevention mechanism 120 is placed on the deck slab 4 located below the upper column 1 in the reclined position, and is equipped with a locking member 130 to which the locking portion 126 of the expandable member 121 is locked so as to be able to pivot freely. The locking member 130 is configured so that the locked portion 126 of the expandable member 121 can move in the width direction Y toward the lower column 2 as the upper end of the upper column 1 is lifted.

[0205] According to this configuration, the joint part 125 is connected to the upper column 1 and the locked part 126 is locked to the locking member 130, so the expandable member 121 can support the upper column 1 so as to be tensioned between the deck slab 4 and the upper column 1. Therefore, the erection support device 7 for the upper column 1 can reliably prevent the upper column 1 from tipping over around the first pivot part 100.

[0206] Furthermore, as the upper end of the upper column 1 is lifted, the engaging portion 126 of the telescopic member 121 can move in the width direction Y toward the lower column 2, so the installation support device 7 for the upper column 1 can support the upper column 1 with an telescopic member 121 that has a shorter overall length than an telescopic member that is engaged in an immovable state. As a result, the erection support device 7 for the upper column 1 can prevent the expansion and contraction member 121 from becoming too large and can support the safe erection of the upper column 1.

[0207] Furthermore, by moving the upper column 1 relative to the lower column 2 along the width direction Y (horizontal direction) and connecting the upper column side joint part 101 and the lower column side joint part 102 with the pin 103, the setup support device 7 for the upper column 1 can reduce the height to which the upper column in a laid-down state is lifted. Therefore, the setup support device for the upper column can safely connect the lower column and the upper column. [Example]

[0208] A construction support device 8 of the fifth embodiment, which has a different configuration of the fall prevention mechanism from that of the construction support device 7 of the fourth embodiment described above, will be described with reference to FIGS. 24 and 25. FIG. The same components as those in the fourth embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. 24 shows a front view of the installation support device 8 in the fifth embodiment, and FIG. 25 shows a front view of the fall prevention mechanism part 150.

[0209] As shown in Figure 24, the construction support device 8 of Example 5 includes a jack 90 that supports the lower end of the upper column 1 from below, and a first pivot part 100 and a second pivot part 110 that pivotally connect the lower column 2 and the upper column 1.

[0210] Furthermore, as shown in Figure 24, the construction support device 8 is equipped with a fall prevention mechanism 150, one end of which is pivotally connected to the outer surface of the upper column 1 facing the first pivot part 100, and the other end of which is pivotally connected to the deck slab 4.

[0211] As shown in Figure 25, the fall prevention mechanism 150 of Example 5 includes a first oil damper 151 having a piston rod 151a connected to the upper column 1 and a second oil damper 152 having a piston rod 152a connected to the deck slab 4. Furthermore, as shown in FIG. 25, the fall prevention mechanism 150 includes a connecting portion 153 that connects the cylinder 151b of the first oil damper 151 and the cylinder 152b of the second oil damper 152 in a non-pivotable state.

[0212] As shown in Figure 25, this anti-tip mechanism 150 is configured so that when the upper column 1 in a reclined position is connected to the deck slab 4, the piston rod 151a of the first oil damper 151 and the piston rod 152a of the second oil damper 152 each protrude.

[0213] Specifically, as shown in FIG. 25, the first oil damper 151 is composed of a piston rod 151a extending in a predetermined direction, a cylinder 151b that accommodates the piston rod 151a so that it can be retracted, hydraulic oil (not shown) filled inside the cylinder 151b, and an orifice valve (not shown) that controls the flow rate of the hydraulic oil flowing inside the cylinder 151b.

[0214] As shown in Figure 25, the tip of the piston rod 151a of this first oil damper 151 is pivotally connected to a connecting flange 154 provided on the outer surface of the upper column 1 facing the upper column side joint part 101 of the first pivot part 100, with the front-to-rear direction X as the rotation axis. The connecting flange 154 is a flat plate having a thickness in the front-rear direction X, and is joined between the lower erection pieces 1b provided on the upper surface of the upper column 1 in the laid state.

[0215] The orifice valve of the first oil damper 151 is configured to restrict the flow rate of hydraulic oil when the piston rod 151a protrudes from inside the cylinder 151b, thereby generating a damping force. Note that the first oil damper 151 is configured so that no damping force is generated when the piston rod 151a is housed inside the cylinder 151b.

[0216] For example, the first oil damper 151 is configured so that when the piston rod 151a is protruding, the damping force is 250 kN, and when the piston rod 151a is retracted, the damping force is 0 kN.

[0217] As shown in FIG. 25, the second oil damper 152 is composed of a piston rod 152a extending in a predetermined direction, a cylinder 152b that accommodates the piston rod 152a so that it can be retracted, hydraulic oil (not shown) filled inside the cylinder 152b, and an orifice valve (not shown) that controls the flow rate of the hydraulic oil flowing inside the cylinder 152b.

[0218] As shown in FIG. 25, the second oil damper 152 has a tip of a piston rod 152a pivotally connected to a connecting flange 155 provided on the deck slab 4, with the front-rear direction X as the rotation axis. The connecting flange 155 is a flat plate having a thickness in the front-rear direction X, and is joined to the deck slab 4 in an upright state.

[0219] The orifice valve of the second oil damper 152 is configured to restrict the flow rate of hydraulic oil when the piston rod 152a protrudes from the inside of the cylinder 152b, thereby generating a damping force. Note that the second oil damper 152 is configured so that no damping force is generated when the piston rod 152a is housed inside the cylinder 152b.

[0220] For example, the second oil damper 152 is configured so that when the piston rod 152a is protruding, the damping force is 250 kN, and when the piston rod 152a is retracted, the damping force is 0 kN.

[0221] As shown in FIG. 25, the connecting portion 153 is a columnar body with a truss structure that integrally surrounds the cylinder 151b of the first oil damper 151 and the cylinder 152b of the second oil damper 152, and holds the first oil damper 151 and the second oil damper 152 in a state where they cannot move relative to each other.

[0222] Next, the process of erecting the upper pillar 1 in a reclined state and connecting it to the lower pillar 2 using the erection support device 8 configured as described above will be described with reference to FIGS. 26 and 27. FIG. FIG. 26 is an explanatory diagram illustrating the state of the erection support device 8 during the erection process, and FIG. 27 is an explanatory diagram illustrating the state of the erection support device 8 when the upper pillar 1 is erected.

[0223] First, the worker places the jack 90 on the deck slab 4 and connects the other end of the tip-over prevention mechanism 150 to the connecting flange 155 of the deck slab 4. Then, as in Example 3, the worker connects the upper column 1 in a laid-down state to the lower column 2 while inserting the shaft 111 of the second pivot part 110 provided on the upper column 1 into the cylinder 112 of the second pivot part 110 provided on the lower column 2.

[0224] At this time, the worker supports the vicinity of the lower end of the upper pillar 1 in the laid state with a jack 90, as shown in FIG. Furthermore, as shown in FIG. 25, the worker connects the fall prevention mechanism 150 to the connecting flange 154 of the upper pole 1, thereby completing preparations for lifting the upper pole 1.

[0225] When preparations for lifting the upper pillar 1 are complete, the worker connects a heavy machine such as a crane to the upper end of the upper pillar 1 and then starts lifting the upper end of the upper pillar 1. At this time, the worker operates the jack 90 to press the upper pillar 1 from below, thereby assisting the upper pillar 1 in starting to rotate.

[0226] When the lifting of the upper end portion starts, the upper column 1, as shown in FIG. 26, tries to rotate counterclockwise in a front view around the first pivot portion 100 so that the upper end portion faces upward while pressing the fall prevention mechanism portion 150.

[0227] At this time, as shown in Figure 26, due to the pressing load from the upper column 1, the piston rod 151a of the first oil damper 151 begins to be accommodated in the cylinder 151b, and the piston rod 152a of the second oil damper 152 begins to be accommodated in the cylinder 152b.

[0228] In addition, since the damping force of the first oil damper 151 and the damping force of the second oil damper 152 are 0 kN, the fall prevention mechanism 150 does not hinder the rotation of the upper pillar 1, and the overall length thereof is shortened. As a result, the upper pillar 1 starts to rotate counterclockwise when viewed from the front, and the tip-over prevention mechanism 150 starts to rotate around the connection point with the connecting flange 155.

[0229] Then, when the upper pillar 1 stands upright above the lower pillar 2, the fall prevention mechanism 150 is in a state in which the first oil damper 151 and the second oil damper 152 are most compressed, as shown in FIG. Then, the worker welds the lower column 2 and the upper column 1 together to form the steel column 3, and melts and removes the first pivot part 100, the second pivot part 110, the connecting flange 154 of the upper column 1, and the connecting flange 155 of the deck slab 4.

[0230] Furthermore, if the upper column 1, whose upper end is lifted, begins to tip over clockwise when viewed from the front around the first pivot part 100 so that it returns to its lying down state, the tip-over prevention mechanism part 150 will extend by pulling the piston rod 151a of the first oil damper 151 and the piston rod 152a of the second oil damper 152.

[0231] At this time, the flow rate of the hydraulic oil in the first oil damper 151 and the second oil damper 152 is restricted, so the first oil damper 151 and the second oil damper 152 extend slowly while resisting the tensile load.

[0232] Therefore, the first oil damper 151 and the second oil damper 152 work together with the heavy equipment lifting the upper pillar 1 to slow down the speed at which the upper pillar 1 falls, thereby preventing the upper pillar 1 from falling over. In this way, the erection support device 8 of the fifth embodiment makes it possible to erect the upper pillar 1 lying down above the lower pillar 2, thereby supporting the erection of the upper pillar 1.

[0233] As described above, the installation support device 8 for the upper column 1 in Example 5 is equipped with a first pivot part 100 whose rotation axis is in the horizontal direction and a second pivot part 110 whose rotation axis is in the vertical direction, and therefore can achieve the same effects as those in Example 3 described above.

[0234] Furthermore, by being equipped with a fall prevention mechanism 150 that prevents the upper column 1 from tipping over by extending it, the upper column 1 installation support device 8 can prevent the upper column 1 from tipping over so that it returns to its laid-down state during the erection process by using the fall prevention mechanism 150. Therefore, the erection support device 8 for the upper pillar 1 can more reliably support the safe erection of the upper pillar 1.

[0235] In addition, the fall prevention mechanism 150 is equipped with a first oil damper 151 having a piston rod 151a pivotally connected to the upper column 1 opposite the upper column side joint 101, and a second oil damper 152 having a piston rod 152a pivotally connected to the deck slab 4. Furthermore, the tipping prevention mechanism 150 includes a connecting portion 153 that connects the cylinder 151b of the first oil damper 151 and the cylinder 152b of the second oil damper 152 in a non-pivotable state.

[0236] The first oil damper 151 and the second oil damper 152 are configured to limit the flow rate of the hydraulic oil flowing inside the cylinders 151b and 152b when a tensile load acts on the piston rods 151a and 152a, respectively.

[0237] According to this configuration, when the first oil damper 151 and the second oil damper 152 extend, the flow rate of the hydraulic oil flowing inside the cylinders 151b and 152b is restricted, so that the extension speed of the fall prevention mechanism 150 is slower than when the flow rate of the hydraulic oil is not restricted.

[0238] In other words, when a tensile load is applied to the piston rod 151a of the first oil damper 151 and the piston rod 152a of the second oil damper 152, the tip-over prevention mechanism 150 extends against the tensile load.

[0239] Therefore, when the upper pillar 1 in the erection process starts to tip over to return to its laid-down state, the erection support device 8 for the upper pillar 1 can slow down the tipping speed of the upper pillar 1 using the tipping prevention mechanism unit 150, thereby preventing the upper pillar 1 from tipping over.

[0240] Furthermore, since the installation support device 8 for the upper column 1 can connect the deck slab 4 and the upper column 1 with a tip-over prevention mechanism 150, the tip-over prevention mechanism 150 can suppress the swaying movement of the upper column 1 that occurs when the upper end is lifted.

[0241] Therefore, the installation support device 8 for the upper column 1 can prevent a load that would cause the weight to be off balance from acting on the heavy machinery that lifts the upper column 1. Therefore, the erection support device 8 for the upper pillar 1 can more reliably support the safe erection of the upper pillar 1. [Example]

[0242] A construction support device 9 of a sixth embodiment, which has a different configuration from the construction support device 6 of the third embodiment described above, will be described with reference to FIGS. 28 to 30. FIG. The same components as those in the third embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0243] In addition, Figure 28 shows an exploded oblique view of the installation support device 9 in Example 6, Figure 29 shows an oblique view of the exterior of the guide member 180, and Figure 30 shows an explanatory diagram explaining the state of the upper column 1 rotating around the first pivot part 160.

[0244] As shown in FIG. 28, the construction support device 9 of Example 6 includes a first pivot part 160 detachably attached to the lower erection piece 1b of the upper column 1, and a second pivot part 170 detachably attached to the upper erection piece 2a of the lower column 2. In addition, the construction support device 9 of the sixth embodiment is provided with a pair of guide members 180 that guide the rotation of the upper column 1 around the first pivot portion 160, as shown in FIGS.

[0245] In the erection support device 9 of Example 6, as shown in FIG. 28, the lower erection piece 1b of the upper column 1 is the upper column side base 161, and the upper erection piece 2a of the lower column 2 is the lower column side base 171, and the upper column side base 161 and the lower column side base 171 are pivotally connected by the first pivot part 160 and the second pivot part 170.

[0246] Specifically, as shown in Figure 28, the first pivot part 160 is composed of an upper column side joint part 162 attached to the upper column 1, a lower column side joint part 163 attached to the lower column 2, and a pin 164 inserted into the upper column side joint part 162 and the lower column side joint part 163.

[0247] 28, the upper column side joint part 162 of the first pivot part 160 is disposed between the upper column side base parts 161 and is detachably attached to the upper column side base part 161. This upper column side joint part 162 is composed of a joint body 162a connected to a main body part 163b of the lower column side joint part 163 (described later) via a pin 164, and an upper column side base 162b that supports the joint body 162a and is attached to the upper column side base part 161.

[0248] As shown in FIG. 28, the lower column side joint portion 163 of the first pivot portion 160 is composed of a flange portion 163a, which is a flat plate that is approximately rectangular in plan view and has a thickness in the vertical direction, and a pair of flat main body portions 163b that are erected from the flange portion 163a at a predetermined distance in the front-to-rear direction X. The main body portion 163b has an opening through which the pin 164 is inserted.

[0249] As shown in Figure 28, the second pivot part 170 is joined to the flange portion 163a of the lower column side joint part 163 and is composed of an axis body 172 extending downward, and a cylindrical body 173 attached to the lower column 2.

[0250] 28, the cylindrical body 173 of the second pivot part 170 is disposed between the lower column side base parts 171 and is detachably attached to the lower column side base part 171. This cylindrical body 173 is disposed between the lower column side base parts 171 and is composed of a cylindrical body main body 173a through which the shaft body 172 is inserted, and a lower column side pedestal 173b which supports the cylindrical body main body 173a and is attached to the lower column side base part 171.

[0251] In addition, as shown in FIGS. 28 and 29, the pair of guide members 180 are fastened and fixed to the upper erection piece 2a at the position farthest from the second pivot part 170 in the width direction Y of the pair of upper erection pieces 2a provided on the front and rear surfaces of the lower column 2.

[0252] As shown in FIGS. 28 and 29, this guide member 180 is a plate material having a thickness in the width direction Y, and is composed of a guide body 181 that guides the rotation of the upper column 1, a reinforcing part 182 that reinforces the guide body 181, and a locking part 183 that is locked to the upper erection piece 2a.

[0253] In detail, the guide body 181 of the guide member 180, as shown in Figures 29 and 30(a), is composed of a lower body part (reference numeral omitted) that abuts on the main surface of the upper erection piece 2a on the second pivot part 170 side, and an upper body part (reference numeral omitted) that extends obliquely upward from the upper end of the lower body part toward the upper column 1 in a lying state.

[0254] The lower portion of the guide body 181 is formed so that the distance between the side surfaces facing the other guide body 181 is approximately the same as the length of the lower pillar 2 in the front-rear direction X. On the other hand, as shown in FIG. 30(a), the upper portion of the guide body 181 extends obliquely upward along the rotation path of the upper pillar 1 around the first pivot portion 160.

[0255] Furthermore, as shown in Figure 29, the upper part of the guide body 181 is formed so that the side surfaces facing the other guide body 181 are inclined so that the distance between the side surfaces facing the other guide body 181 becomes wider as it goes upward.

[0256] 28, the reinforcing portion 182 of the guide member 180 is joined across the lower and upper portions of the guide main body 181 on the main surface of the guide main body 181 on the second pivot portion 170 side.

[0257] 29, the locking portion 183 of the guide member 180 is disposed opposite the reinforcing portion 182 with the guide main body 181 interposed therebetween, and is joined to the lower portion of the guide main body 181. As shown in FIG.

[0258] Next, a brief description will be given of the case where the upper pillar 1 is erected using the above-described erection support device 9. When erection of the upper pillar 1 starts, the upper pillar 1 in a laid-down state rotates counterclockwise as viewed from the front, with the first pivot part 160 as the rotation center, as shown in Figures 30(a) and 30(b). Thereafter, as the lower end of the upper pillar 1 approaches the upper end of the lower pillar 2 as shown in FIG. 30(b), the front and rear surfaces of the upper pillar 1 come into contact with the side surfaces of the upper main body of the guide member 180.

[0259] At this time, by contacting the side surface of the guide member 180, the upper pillar 1 rotates counterclockwise as viewed from the front about the first pivot part 160 as the center of rotation, while also rotating slightly in the rotation direction about the second pivot part 170 as the center of rotation. As a result, the upper pillar 1 is guided by the guide member 180 to directly above the lower pillar 2. Then, when the upper pillar 1 rotates directly above the lower pillar 2, the worker joins the upper pillar 1 to the lower pillar 2, completing the erection of the upper pillar 1.

[0260] According to the above-described configuration, the upper column side base 161 is composed of the lower erection piece 1b of the upper column 1, and the lower column side base 171 is composed of the upper erection piece 2a of the lower column 2. Therefore, the installation support device 9 of the upper column 1 does not need to fasten and attach the lower column side base and the upper column side base to the lower column 2 and the upper column 1, respectively.

[0261] Alternatively, the erection support device 9 for the upper column 1 can eliminate the need to integrally provide the lower column side base and the upper column side base, which are separate from the upper erection piece 2a and the lower erection piece 1b, on the lower column 2 and the upper column 1.

[0262] Furthermore, the building support device 9 for the upper column 1 makes it unnecessary to separately remove the lower column side base and the upper column side base and the upper erection piece 2a and the lower erection piece 1b. As a result, the erection support device 9 for the upper pillar 1 can improve work efficiency and also support the erection of the upper pillar 1 with a simple configuration.

[0263] In addition, by providing a pair of guide members 180 that guide the upper column 1 directly above the lower column 2, the installation support device 9 for the upper column 1 can easily align the orientation of the upper column 1 with the lower column 2 in the rotational direction with the vertical direction as the center of rotation.

[0264] As a result, the erection support device 9 for the upper column 1 can reliably erect the upper column 1 directly above the lower column 2, and therefore can support safer erection of the upper column 1 even when equipped with the second pivot part 170.

[0265] In correspondence between the configuration of this invention and the above-mentioned embodiment, The pivot portion of this invention corresponds to the connecting arm 13 and the first pivot portion 70, 100, 160 of the embodiment. Similarly, The lower pillar erection piece corresponds to the upper erection piece 2a of the lower pillar 2, The upper pillar erection piece corresponds to the lower erection piece 1b of the upper pillar 1, The floor corresponds to slab 4, The present invention is not limited to the configurations of the above-described embodiments, and many other embodiments can be obtained.

[0266] For example, in the above-described first to sixth embodiments, the lower columns 2 penetrate the deck slab 4, but the present invention is not limited to this, and the bases of steel columns provided in the foundation may also be used as the lower columns. Furthermore, in the above-mentioned Example 1, the connecting arm 13 is configured to be pivotally connected to the upper column side base 11 and the lower column side base 12, but this is not limited to this, and as long as at least the lower column side base 12 and the connecting arm 13 are pivotally connected, the connecting arm 13 may be fastened and fixed to the upper column side base 11.

[0267] In addition, in Example 1, the sliding member 16 has an upper surface that is roughly semi-cylindrical when viewed from the front and is made up of a combination of planes with different inclinations, but this is not limited to this, and the sliding member may also have an upper surface that is roughly arc-shaped when viewed from the front and follows the rotation trajectory near the corner 1a of the upper column 1.

[0268] In addition, in Example 1, the sliding member 16 of the guide member 14 is made of an engineering plastic that is self-lubricating and has a low coefficient of friction, but this is not limited to this, and the sliding member may be made of a metal such as stainless steel, or a sliding member in which a thin metal plate is attached to the surface of an engineering plastic. At this time, in order to suppress wear of the sliding member, the corners 1a of the upper pillar 1 may be polished to improve smoothness.

[0269] Furthermore, in Example 3, the upper column 1 was brought onto the deck slab 4 so that the longitudinal direction of the upper column 1 in the laid-down state intersects with the width direction Y, but this is not limited to this, and the upper column 1 may also be brought onto the deck slab 4 so that the longitudinal direction of the upper column 1 in the laid-down state approximately coincides with the width direction Y.

[0270] Furthermore, the construction support device 6 of Example 3 may be provided with a damper that connects the upper column 1 and the lower column 2. In this case, the upper column 1 is carried onto the deck slab 4 so that the longitudinal direction of the upper column 1 in a laid-down state is approximately aligned with the width direction Y. The winding mechanism 20 of Example 1 may be provided in the construction support device 6 of Example 3 or the construction support device 7 of Example 4. In this case, the upper pillar 1 is carried onto the deck slab 4 so that the longitudinal direction of the upper pillar 1 in the laid state approximately coincides with the width direction Y.

[0271] Furthermore, in Example 3, after the upper column 1 is erected, it is rotated horizontally around the second pivot part 80, but this is not limiting, and the upper column 1 in a laid-down state may be rotated counterclockwise around the first pivot part 70 while rotating horizontally around the second pivot part 80. Even in this case, the setup support device 6 for the upper column 1 can easily align the orientation of the upper column 1 with the orientation of the lower column 2 in the rotation direction with the vertical direction as the rotation center.

[0272] Furthermore, the timing of bringing the upper column 1 onto the deck slab 4 is not limited to the timing described in Examples 1 to 3, and it may be brought in at any appropriate timing. Furthermore, in Examples 1 and 2, the timing for attaching the connecting arm 13, the timing for attaching the winding mechanism 20, and the timing for attaching the damper 30 are not limited to the above-mentioned timings, and may be any appropriate timing as long as it is within the time period up until the start of lifting the upper column 1.

[0273] Furthermore, in Example 3, the timing of attaching the lower column side base 50 to the lower column 2 and the timing of attaching the upper column side base 60 to the upper column 1 are not limited to the above-mentioned timings, and may be any appropriate timing as long as it is within the time period up until the start of lifting the upper column 1.

[0274] Moreover, the fall prevention mechanism 120 of the fourth embodiment or the fall prevention mechanism 150 of the fifth embodiment may be applied to the installation support device 5 for the upper pillar 1 of the first embodiment. Furthermore, the jack 90 of the fourth embodiment may be applied to the construction support device 5 of the first embodiment or the construction support device 6 of the third embodiment.

[0275] Furthermore, in Example 4, the telescopic member 121 is configured to be engaged with the engaging member 130, but this is not limited to this, and the anti-tip mechanism may be configured such that one end of the telescopic member 121 is pivotally connected to the upper column 1 and the other end of the telescopic member 121 is pivotally connected to the deck slab 4, as shown in Figure 31, which shows a front view of the installation support device 7 in another embodiment.

[0276] In this case, the expandable member 121 assists in erecting the upper column 1 by extending and rotating counterclockwise from the front about the connection point with the deck slab 4 to follow the rotation of the upper column 1, as shown in Figure 32, which is a schematic diagram explaining the operation of the fall prevention mechanism in another embodiment. Even with this configuration, the installation support device 7 for the upper pillar 1 can achieve the same effects as in the fourth embodiment described above.

[0277] In addition, in Example 6, the upper column side joint part 162 of the first pivot part 160 is configured to be attached to the upper column side base part 161 configured by the lower erection piece 1b of the upper column 1, but this is not limited to this. For example, the upper column side joint part of the first pivot part may be integrally formed with the lower erection piece 1b of the upper column 1, and the lower erection piece 1b of the upper column 1 may be connected to the lower column side joint part attached to the lower column side base part of the lower column 2.

[0278] Furthermore, the construction support device 6 of Example 3, the construction support device 7 of Example 4, the construction support device 8 of Example 5, and the construction support device 9 of Example 6 are configured to include a first pivot part 70, 100, 160 that pivots the upper column 1 around the horizontal direction as the rotation axis, and a second pivot part 80, 110, 170 that pivots the upper column 1 around the vertical direction as the rotation axis, but this is not limited to this. For example, the construction support device may be provided with a pair of locking parts that are located close to the end face of the lower column side joint part in the front-rear direction X and that restrict the rotation of the second pivot part.

[0279] As an example, using the installation support device 9 of the above-mentioned Example 6, as shown in Figure 33, which is an explanatory diagram outlining the locking portion 174, the installation support device 9 is provided with a pair of locking portions 174 on the lower column side base 173b, which are close to the end face of the lower column side joint portion 163 in the forward / backward direction X and which restrict the rotation of the second pivot portion 170.

[0280] This locking portion 174 is configured by combining a plurality of plates and is rotatably supported on the lower pillar side base 173b. In detail, as shown in Figure 33, the pair of locking portions 174 are rotatably supported on the lower column side base 173b with the horizontal direction as the rotation axis, and are configured to be able to face each other close to the end face of the flange portion 163a of the lower column side joint portion 163 in the front-to-rear direction X.

[0281] This locking portion 174 is configured to rotate around the connection point with the lower column side base 173b, as shown by the dotted line in Figure 33(a), so as to move away from the end face of the lower column side joint portion 163.

[0282] In other words, the locking portion 174 is configured to be able to move between a state in which it is close to and faces the end face of the lower column side joint portion 163 in the front-to-rear direction X, and a state in which it is spaced apart from the end face of the lower column side joint portion 163. The locking portion 174 is rotated manually by an operator, or by an actuator operated by an operator, or by rotating in accordance with the erection of the upper column 1, so that it approaches the end face of the lower column side joint portion 163.

[0283] In this configuration, with the locking portion 174 spaced apart from the end face of the lower column-side joint portion 163, the worker erects the upper column 1 from its reclined position, and aligns the orientation of the upper column 1 in the rotational direction with the vertical direction as the center of rotation with the lower column 2. Thereafter, the worker moves the locking portion 174 to a state where it is close to and faces the end face of the lower column-side joint portion 163, thereby restricting the rotation of the second pivot portion 170.

[0284] According to this configuration, when the locking portion 174 is close to and facing the end face of the lower column side joint portion 163, the installation support device for the upper column 1 can prevent the rotation of the shaft of the second pivot portion 170 by contact between the flange portion 163a of the lower column side joint portion 163 and the locking portion 174.

[0285] Therefore, the setup support device for the upper column 1 can restrict the upper column 1 from unintentionally rotating about the vertical axis during the process of erecting the upper column 1 that is in a laid-down state, by using the lock part 174. As a result, the setup support device for the upper column 1 can support safer erection of the upper column 1 even when it is equipped with the second pivot part 170. [Explanation of symbols]

[0286] 1...Upper pillar 1b...Lower erection piece 2…Lower pillar 2a...Upper erection piece 4…Floor slab 5,6,7,8,9...Installation support device 11, 60, 161...Base of upper pillar 12,50,113,171…lower column side base 13...Connecting arm 14...Guide member 16...Sliding member 22...Wire 23...winding machine 24a...Guide roller 30...Damper 40...Support member 70, 100, 160...First pivot 80, 110, 170...Second pivot 81...Shaft 82...Cylinder 90...Jack 101...Upper column side joint 120, 150... Fall prevention mechanism 121...Expandable member 130...Locking member 151...1st oil damper 151a...Piston rod 151b...Cylinder 152...Second oil damper 152a...Piston rod 152b...Cylinder 153...Connection part

Claims

1. An upper column erection support device that supports the erection of an upper column that is carried in lying down so that the longitudinal direction is approximately horizontal, a lower column side base attached to the upper end of the lower column; an upper column side base attached to the underside of the lower end of the upper column in a laid-down state; a pivot part that pivotally connects the lower column side base part and the upper column side base part with the horizontal direction as a rotation axis, the pivot portion is a first pivot portion, A second pivot portion is provided to pivotally connect the lower column side base portion and the upper column side base portion with the vertical direction as a rotation axis. A support device for erecting upper columns.

2. The second pivot portion is a shaft extending in the vertical direction; a cylindrical body extending in the vertical direction and through which the shaft body is inserted, The cylindrical body is It is divided into two parts in a vertical cross section passing through the radial center, and is configured to be openable and closable with the vertical direction as the rotation axis. The upper column installation support device according to claim 1.

3. The lower column side base portion and the upper column side base portion are configured to sandwich the lower column and the upper column, respectively. The upper column installation support device according to claim 1 or 2.

4. The support member is disposed between the lower column side base and the floor surface and supports the lower column side base from below. The upper column installation support device according to claim 3.

5. The lower column side base and the upper column side base are respectively constituted by a lower column erection piece and an upper column erection piece. The upper column installation support device according to claim 1 or 2.

6. a wire having one end attached to the upper pole facing the upper pole side base portion; a winding machine for winding the wire; a guide roller disposed along the outer surface of the lower pillar facing the lower pillar side base portion and guiding the winding of the wire; An upper column installation support device according to any one of claims 1 to 5.

7. A jack is provided to support the lower end of the upper column from below in a laid-down state. The upper column installation support device according to any one of claims 1 to 6.

8. A tipping prevention mechanism is provided that prevents the upper column from tipping over by extending the upper column. An upper column installation support device according to any one of claims 1 to 7.

9. The fall prevention mechanism includes: an extension member whose one end is pivotally connected to the surface of the upper column on which the upper column side base portion is provided and which can maintain an extension / contraction state; a locking member that is placed on the floor surface located below the upper column in the laid-down state and to which the other end of the telescopic member is pivotally locked, The locking member is The other end of the telescopic member is configured to be movable in the longitudinal direction toward the lower pillar as the upper end of the upper pillar is lifted. The upper column installation support device according to claim 8.

10. The fall prevention mechanism includes: a first oil damper having a piston rod pivotally connected to the upper pillar and facing the upper pillar side base portion; a second oil damper having a piston rod pivotally connected to the floor surface; a connecting portion that connects the cylinder of the first oil damper and the cylinder of the second oil damper in a non-pivotable state; The first oil damper and the second oil damper are Each of these is configured to limit the flow rate of hydraulic oil flowing inside the cylinder when a tensile load acts on the piston rod. The upper column installation support device according to claim 8.

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