Lifting unit and lifting method

Abstract

To provide a lifting unit that can suitably lift building components while they are supported. [Solution] The lifting unit 1 includes support members 10A and 10B that are spaced apart horizontally and support the first steel frame member BA by sandwiching it from the side, and support beams 20 and 30 that are provided vertically between the first steel frame member BA and the second steel frame member BB and support the second steel frame member BB from below. The support beams 20 and 30 have support beam bodies 21 and 31 that are placed on the upper surface of the first steel frame member BA, lower engaging parts 22 and 32 provided at the lower end of the support beam body that engage with a part of the first steel frame member BA, and upper engaging parts 23 and 33 provided at the upper end of the support beam body that engage with a part of the second steel frame member BB. The lifting unit 1 supports the first steel frame member BA and the second steel frame member BB in a positioned state.

Description

Technical Field

[0001] The present invention relates to a lifting unit and a lifting method, and particularly to a lifting unit and a lifting method for lifting a plurality of stacked building members.

Background Art

[0002] Conventionally, construction members such as steel members are carried into a construction site, and the carried construction members are lifted by a hanging member (lifting sling) hooked to a lifting device, and the lifted construction members are installed at a predetermined position in a building. Construction work is being carried out (see, for example, Patent Documents 1 and 2). In Patent Document 1, a plurality of construction members are lifted using a pair of lifting jigs (support members) provided at intervals in the horizontal direction and supporting the construction members from below. Specifically, one end of four wire ropes (hanging members) hooked to a crane is hooked to a lifting jig respectively, and a plurality of construction members are lifted. Patent Document 2 also has a similar configuration, in which a plurality of construction members are stacked in the vertical direction, and the construction members are lifted by a crane.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when using lifting devices such as those described in Patent Documents 1 and 2 to lift building components, such as steel frame members with columns and braces, the steel frame members may slip or their center of gravity may shift, making stable lifting impossible. In particular, when multiple building materials were stacked vertically, the materials would sometimes sag downwards, making it impossible to lift them stably. Therefore, there was a need for a lifting unit that could suitably lift various building components, including steel frame members, while supporting them. Furthermore, there was a need for a lifting unit that could suitably lift building materials even when they were stacked side by side and multiple building materials were stacked with gaps between them in the vertical direction.

[0005] The object of the present invention is to provide a lifting unit and a lifting method that can suitably lift building components while they are supported. Another object of the present invention is to provide a lifting unit and lifting method that can suitably lift building components, such as steel frame members, even when they are stacked with gaps between them in the vertical direction. [Means for solving the problem]

[0006] The aforementioned problem is solved by the present invention, which provides a lifting unit for lifting multiple building members stacked at intervals in the vertical direction, comprising: a first support member and a second support member provided at intervals in the horizontal direction to support a first building member by sandwiching it from the side; a support beam provided between the first building member and a second building member located above the first building member to support the second building member from below, wherein the support beam has a support beam body placed on the upper surface of the first building member, a lower engaging portion provided at the lower end of the support beam body to engage with a part of the first building member, and an upper engaging portion provided at the upper end of the support beam body to engage with a part of the second building member, and the lifting unit supports the first building member and the second building member in a positioned state.

[0007] With the above configuration, a lifting unit can be realized that is simple in design and capable of effectively lifting building components while they are supported. More specifically, the lifting unit includes a support beam interposed between the first and second building members. This support beam has a lower engaging portion that engages with a part of the first building member and an upper engaging portion that engages with a part of the second building member. As a result, the lifting unit can support the first and second building members in a positioned state, allowing for stable lifting of the building members. It can also be used for unloading.

[0008] In this case, the lifting unit is used to lift the building members stacked side by side, the first support member connects the first building members arranged side by side and supports one end of each first building member from the side, the second support member connects the first building members arranged side by side and supports the other end of each first building member from the side, and the linking timber connects the first building members arranged side by side and / or the second building members arranged side by side. With the above configuration, even when building components are stacked side by side and multiple components are stacked with gaps in the vertical direction, the building components stacked side by side can be connected and lifted effectively.

[0009] In this case, the lifting unit is used to lift the steel frame members, which are building components, stacked side by side, with the lower engaging portion engaging with the column of the first steel frame member, the upper engaging portion engaging with the column of the second steel frame member located above the first steel frame member, and the main body of the support beam supporting the brace of the second steel frame member. With the above configuration, when loading steel frame members having columns and braces, displacement of columns and braces can be suppressed. Furthermore, even when steel frame members are loaded side by side, it is possible to suppress the sliding of the steel frame members and the shifting of the center of gravity of the steel frame members.

[0010] In this case, the support member has a support body that abuts against the end face of the first building member in the longitudinal direction, a reinforcing projection that extends continuously from the support body and protrudes outward from the support body, and a mounting portion provided on the side surface of the support body and attached to the end face of the first building member, and the lintel has a first lintel that engages with a part of the building member and positions the building member, and a second lintel that extends longer than the first lintel and engages with a part of the building member and positions the building member, and the second lintel preferably has a long lintel body, left and right lower engaging portions provided at the lower ends of both ends of the lintel body and engaging with a part of the first building member, and left and right upper engaging portions provided at the upper ends of both ends of the lintel body and engaging with a part of the second building member. With the above configuration, the rigidity of the support members can be increased, and the first building member can be stably supported by the first support member and the second support member. Furthermore, as described above, by utilizing the two types of first and second support beams, it is possible to suitably support and appropriately lift building components with complex structures, such as steel frame members.

[0011] In this case, the lifting unit is used to lift the building members stacked side by side, and the first and second timbers are arranged with a gap between them in the direction in which the building members are arranged. The first timber engages with a part of one of the left and right building members, and the second timber engages with a part of the other of the left and right building members. With the above configuration, even when building materials are stacked side by side and spaced apart vertically, the building materials can be positioned and lifted appropriately using the first link rod and the long second link rod.

[0012] In this case, the lifting unit is used to lift the steel frame members as building components, which are stacked side by side. The first support beam is interposed between the first steel frame member located on one side of the left and right steel frame members and the second steel frame member located above the first steel frame member, and engages with the column of the first steel frame member and the column of the second steel frame member, respectively. The second support beam is interposed between the first steel frame member and the second steel frame member located on the other side of the left and right steel frame members, and engages with the column of the first steel frame member and the column of the second steel frame member, respectively, and also supports the brace of the second steel frame member from below. With the above configuration, the first link bar engages with the column of the first steel frame member and the column of the second steel frame member, respectively, and the second link bar also engages with the column of the first steel frame member and the column of the second steel frame member, respectively, supporting the brace of the second steel frame member from below. This allows the upper and lower steel frame members to be supported as a single unit, preventing the steel frame members from slipping and sagging when lifted by a lifting sling.

[0013] Furthermore, the aforementioned problems are solved by the lifting method of the present invention, which is a lifting method using the lifting unit described above, and includes a fixing step of fixing the first support member and the second support member to both ends of the first building member, respectively; an attachment step of attaching the lintel to the upper surface of the first building member; a loading step of loading the second building member onto the upper surface of the lintel; a fastening step of fastening a long lifting member to the lifting unit; and a lifting step of lifting the lifting unit on which the building members are loaded, wherein in the lifting step, the first building member and the second building member are supported in a positioned state by the first support member, the second support member and the lintel. With the above configuration, a lifting method can be realized that allows for the appropriate lifting of building components while they are supported.

[0014] In this case, during the fixing step, the first steel frame members, each having a column and a brace connected to the column at a predetermined angle of inclination, are arranged side by side as the first building member, and during the loading step, the second steel frame members are loaded side by side as the second building member, and the second steel frame members are loaded in such a way that the brace of the second steel frame member is supported from below by the long wooden supports. With the above configuration, even when steel frame members are stacked side by side and spaced apart vertically, the steel frame members can be lifted effectively. [Effects of the Invention]

[0015] According to the lifting unit and lifting method of the present invention, it is possible to suitably lift building components while they are supported. Furthermore, even when building components such as steel frame members are stacked with gaps between them in the vertical direction, it becomes possible to lift the building components effectively. [Brief explanation of the drawing]

[0016] [Figure 1] This diagram shows a steel frame member being lifted using a lifting unit. [Figure 2] It is a plan view of a steel frame member. [Figure 3] It is a perspective view of a steel frame member and a support member (enlarged view of the main part in FIG. 1). [Figure 4] It is a perspective view of a steel frame member and a first purlin (enlarged view of the main part in FIG. 1). [Figure 5] It is a perspective view of a steel frame member and a second purlin (enlarged view of the main part in FIG. 1). [Figure 6] It is a diagram for explaining the procedure of stacking steel frame members in the vertical direction. [Figure 7] It is a diagram for explaining the subsequent procedure of FIG. 6. [Figure 8] It is a rear view of a lifting unit loaded with steel frame members.

Embodiment for Implementing the Invention

[0017] Hereinafter, embodiments according to the present invention will be described with reference to FIGS. 1 to 8. This embodiment relates to a "lifting unit" that enables suitable lifting of building members (steel frame members) in a supported state. It also relates to a "lifting method" using the lifting unit.

[0018] <Overall Configuration> As shown in FIG. 1, the lifting unit 1 is used when transporting a plurality of steel frame members B in a stacked state to a construction site, is lifted together with the steel frame members B by a lifting device L at the construction site, and is used when unloading the steel frame members B. Specifically, the lifting unit 1 is transported by a truck in a state where the steel frame members B are laid flat from a factory to a construction site. Then, it is lifted together with the steel frame members B by a lifting sling S hooked to the lifting device L at the construction site and is used for installing the steel frame members B at a predetermined position in a building.

[0019] The lifting unit 1 is lifted together with the steel frame member B while being supported by two lifting slings S that are attached to the lifting device L. In this configuration, the steel frame members B are stacked side by side and multiple members are stacked with spacing between them in the vertical direction. The multiple steel frame members B are stacked in a positioned manner by the lifting unit 1 (support members 10, link timbers 20, 30). The steel frame members B may also be further secured with wrapping belts (they may be used to fasten the load). As a result, the lifting unit 1, despite its simple configuration, suppresses slippage of the steel frame member B and shifting of its center of gravity, enabling stable lifting and unloading of the steel frame member B.

[0020] As shown in Figure 1, the lifting sling S is, for example, a long sling made of nylon, with one end (upper end) hooked onto the lifting section L1 of the lifting device L, and the other end (lower end) hooked onto both ends of the lifting unit 1 in the longitudinal direction. One end of the lifting sling S is directly attached to the lifting section L1, but it may also be attached via a shackle. The other end of the lifting sling S wraps around and is secured to the underside of the lifting unit 1. Specifically, the other end of the lifting sling S is attached so as to surround the steel frame member B positioned by the lifting unit 1, and holds the steel frame member B from the side and below.

[0021] As shown in Figures 1 and 2, steel member B is a steel material used in steel-framed buildings, and is a structural member used in the framework, such as columns and beams. Specifically, steel member B is a member composed of column B1 (steel column), brace B2 (steel brace) connected to column B1 at a predetermined angle of inclination, and a second column B3 connected to brace B2. Steel members B include, for example, (1) an "N-type steel member" consisting of column B1, brace B2, and second column B3, (2) a "V-type steel member" consisting of column B1 and brace B2, and (3) an "I-type steel member" consisting of column B1. Furthermore, the upper and lower ends of column B1 (second column B3) are connected to connecting parts (also called connecting joints or joint boxes (registered trademark)), and the type (category) differs depending on the type of connecting part.

[0022] The steel frame members B shown in Figures 1 and 2 are "V-shaped steel frame members" and "N-shaped steel frame members," respectively. A "V-shaped steel member" is a member composed of column B1 and brace B2. An "N-shaped steel member" is a member composed of column B1, brace B2 and second column B3.

[0023] Column B1 comprises a long column body B1a formed from a square pipe, a foundation connection part B1b fixed to the lower end of the column body B1a by welding, and a beam connection part B1c fixed to the upper end of the column body B1a by welding. The foundation connection part B1b is the part that connects to the foundation of the building, and a connection hole B1d is formed on the end face of the foundation connection part B1b. The beam connection portion B1c is the part that connects to the beam of the building, and a connection hole B1e is formed on the end face of the beam connection portion B1c. Brace B2 is connected to the lower end of column B1.

[0024] Brace B2 is a reinforcing member that is connected to column B1 at a predetermined angle of inclination and extends diagonally relative to column B1. Column B1 and brace B2 together form the structural frame of a load-bearing wall. Brace B2 comprises a long brace body B2a formed from a square pipe, a damper B2b fixed to the lower end of the brace body B2a by welding, and a column connection part B2c fixed to the upper end of the brace body B2a by welding. Damper B2b is a component that absorbs vibrations (vibrational energy) caused by earthquakes, typhoons, etc., and is connected to the side of column B1. The column connection part B2c is the part that connects to the upper end of the second column B3 and is fixed to the side of the second column B3.

[0025] The second column B3, like column B1, has a long column body B3a, a foundation connection section B3b, and a beam connection section B3c. A connection hole B3d is formed on the end face of the foundation connection part B3b. And a connection hole B3e is formed on the end face of the beam connection part B3c.

[0026] In the case of a "V-shaped steel frame member," the steel frame member B consists of a column B1 and a brace B2 connected to the column B1. In this case, a brace connection part for connecting to another brace will be fixed to one end of the brace B2. In other words, in the "V-shaped steel member," the brace B2 is supported by the column B1 only by the damper B2b.

[0027] As shown in Figures 1, 6 to 8, the steel frame members B are stacked horizontally adjacent to each other on the lifting unit 1, and multiple members are stacked vertically with gaps between them. In this embodiment, "V-shaped steel members" and "N-shaped steel members" are loaded, but this is not particularly limited. For example, "N-shaped steel members" may be loaded in combination with each other, or "V-shaped steel members" may be loaded in combination with each other. Alternatively, "N-shaped steel members" and "I-shaped steel members" may be loaded in combination, or "V-shaped steel members" and "I-shaped steel members" may be loaded in combination. Naturally, different combinations can be stacked vertically. For example, the first layer could be a combination of "V-shaped steel members" and "N-shaped steel members," and the second layer could be a combination of "N-shaped steel members" together.

[0028] Furthermore, since the first-stage steel frame member B can serve as a base, it is preferable that it be a combination of a "V-shaped steel frame member" and an "N-shaped steel frame member," or a combination of "N-shaped steel frame members" together. In other words, when combining two "V-shaped steel members" or a "V-shaped steel member" with an "I-shaped steel member," the number of columns becomes small (only two), making it difficult to support steel member B using the columns, resulting in inferior stability. Therefore, as will be explained in more detail later, when loading the "V-shaped steel frame member" on the upper level, the steel frame member B can be stably lifted by using the second link timber 30 instead of the first link timber 20 to support the column B1 and brace B2 from below.

[0029] <Lifting Unit> As shown in Figures 1 to 8, the lifting unit 1 is used to lift multiple steel frame members B while holding them at intervals in the vertical direction. The lifting unit 1 includes support members 10A and 10B that are spaced apart along the length of the steel frame member B and support the first steel frame member BA by sandwiching it from the side, and support beams 20 and 30 that are provided between the first steel frame member BA and the second steel frame member BB in the vertical direction and support the second steel frame member BB from below. In the embodiment shown in Figure 1, three steel frame members B are stacked in a vertically spaced configuration. Support members 10A and 10B are attached to both ends of the first steel frame member BA in the first layer, and support beams 20 and 30 are placed between the first steel frame member BA in the first layer and the second steel frame member BB in the second layer. Support beams 20 and 30 are also placed in the vertical space between the steel frame members B in the layers above the second layer.

[0030] As shown in Figures 1 and 3, the support member 10 is a long steel material with an L-shaped cross-section, and is a member that supports the adjacent steel frame members B (first steel frame member BA) from the side. The support member 10 has a support body 11 that abuts against the end face in the longitudinal direction of the steel frame member B, and a reinforcing projection 12 (reinforcement part) that extends outward from the lower end of the support body 11. Mounting holes 13 (mounting parts) are formed on the side surface of the support body 11 at intervals along the length of the support body 11, and are attached to the end face of the steel frame member B. In this embodiment, the support members 10A and 10B are fixed to the side surface of the steel frame member B and support the steel frame member B from the side. However, this is not particularly limited, and they may also be fixed to the bottom surface of the steel frame member B and support the steel frame member B from below.

[0031] The support body 11 has a length that allows it to support two steel frame members B placed adjacent to each other on the left and right, and it abuts against the sides of the left and right steel frame members B. The reinforcing projection 12 is a reinforcing part that increases the rigidity of the support member 10, and extends in an elongated manner along the length direction of the support body 11. The support body 11 and the reinforcing projection 12 form an L-shaped body.

[0032] As shown in Figure 3, the mounting hole 13 is a through-hole formed by penetrating the side surface of the support body 11. The mounting hole 13 has a plurality of first mounting holes 13a and a plurality of second mounting holes 13b that are formed at intervals along the length of the support member 10. The first mounting hole 13a is detachably attached to the connection hole B1d (B3d) of the steel frame member B (foundation connection part B1b, B3b) using mounting bolts. The second mounting hole 13b is detachably attached to the connection hole B1e (B3e) of the steel frame member B (beam connection section B1c, B3c) using mounting bolts. The first mounting hole 13a and connection hole B1d (B3d) are formed as relatively large holes. On the other hand, the second mounting hole 13b and connection hole B1e (B3e) consist of multiple small holes, and by fixing multiple mounting bolts, it is possible to prevent the steel frame member B from rotating unintentionally.

[0033] With the above configuration, as shown in Figures 1 and 3, the first support member 10A connects the first steel frame members BA which are arranged on the left and right, and can support one end of each of these steel frame members BA from the side. Furthermore, the second support member 10B connects the first steel frame members BA, which are arranged side by side, and can support the other end of each of these steel frame members BA from the side. This allows the first steel frame members BA, which are positioned on the left and right, to be supported in a fixed location.

[0034] As shown in Figures 1 and 4, the first support beam 20 is a member (sleeper) that is interposed between the steel frame members B when they are stacked with a gap in the vertical direction, and it supports the column B1 (second column B3) of the steel frame members B and positions the steel frame members B. As shown in Figures 1 and 5, the second support beam 30 is a member (sleeper) that extends longer than the first support beam 20, and supports the column B1 (second column B3) and brace B2 of the steel frame member B, thereby positioning the steel frame member B. The lintels 20 and 30 are arranged in pairs, spaced apart along the length of the steel frame member B, similar to the pair of support members 10. The first steel frame member BA, located in the first tier, is supported from below by long, rectangular prism-shaped support beams (ordinary support beams), and is positioned so as to be elevated above the installation surface.

[0035] The first lintel 20 has an H-shape in side view and includes a lintel body 21 placed on the upper surface of the first steel frame member BA, a lower engaging portion 22 provided at the lower end of the lintel body 21 that engages with the column B1 (second column B3) of the first steel frame member BA, and an upper engaging portion 23 provided at the upper end of the lintel body 21 that engages with the column B1 (second column B3) of the second steel frame member BB.

[0036] The main body of the lintel 21 extends somewhat longer than the width of column B1 (second column B3) of the steel frame member B. The lower engaging portion 22 is a pair of engaging protrusions that project downward from both ends in the longitudinal direction of the main body of the linden tree 21, and has the function of gripping the column B1 (second column B3) and preventing the column B1 from shifting position. The upper engaging portion 23 is a pair of engaging protrusions that project upward from both ends in the longitudinal direction of the main body of the linden tree 21, and similarly has the function of gripping the column B1 (second column B3) and preventing the column B1 from shifting position.

[0037] The second lintel 30 has a horizontally elongated H-shape in a side view and includes a lintel body 31 placed on the upper surface of the first steel frame member BA, a pair of downward engaging parts 32 provided at the lower ends of both ends in the longitudinal direction of the lintel body 31 and engaging with the column B1 (second column B3) of the first steel frame member BA, and a pair of upward engaging parts 33 provided at the upper ends of both ends of the lintel body 31 and engaging with the column B1 (second column B3) of the second steel frame member BB. A long support plate 34 (plywood) is attached to the center of the upper surface of the main body of the bellwood 31, running in the direction of the length of the bellwood body.

[0038] The main body of the lintel 31 extends long so as to straddle the column B1 and brace B2 of the steel frame member B. Specifically, the main body of the wooden frame 31 has a length that allows it to be placed on the upper surfaces of column B1 and the second column B3 of the "N-shaped steel frame member". Also, as shown in Figure 5, it has a length that allows it to be placed on the upper surfaces of column B1 of the "V-shaped steel frame member" and column B1 of the "N-shaped steel frame member". The lower engaging portion 32 is a pair of engaging protrusions that project downward from both ends in the longitudinal direction of the main body of the linden tree 31, and has the function of gripping the column B1 (second column B3) and preventing the column B1 from shifting position. The upper engaging portion 33 is an engaging projection that protrudes upward from both ends in the longitudinal direction of the main body of the linden tree 31, and has the function of preventing misalignment of the column B1 (second column B3). Specifically, the upper engaging portion 33 is a single protrusion that extends upward from both ends of the main body of the lintel 31, and together with the receiving plate 34, it clamps the column B1 (second column B3) and prevents the column B1 from shifting position.

[0039] The support plate 34 is a plate that supports the brace B2 of the second steel frame member BB from below, and is attached to the upper surface of the wooden frame body 31 so as to give the wooden frame body 31 thickness. The receiving plate 34 does not protrude above the upper engaging portion 33, and is positioned and at a height that appropriately accommodates the brace B2 of the second steel frame member BB. For example, when a "V-shaped steel frame member" is loaded onto the upper surface of the second support beam 30, the brace B2 of the steel frame member B is placed on the upper surface of the support beam body 31 (receiving plate 34), and the column B1 is sandwiched between the upper engaging portion 33 and the outer edge of the receiving plate 34. In this way, by considering the height positions of the column B1 and brace B2 when the steel frame member B is placed horizontally, the horizontally placed steel frame member B can be appropriately positioned and supported.

[0040] In the above configuration, as shown in Figures 4 to 6, the first link beam 20 and the second link beam 30 are arranged with a gap between them in the direction in which the left and right steel frame members B are aligned. At this time, the second link beam 30 engages with the column B1 of the other (left) steel frame member B and the column B1 of the other steel frame member B. In other words, the second link beam 30 connects the left and right steel frame members B. Then, the first link beam 20 engages with the second column B3 of the one (right) steel frame member B. This allows the steel frame members B, which are arranged on the left and right sides, to be connected by the second link 30 and lifted appropriately. Depending on the combination of steel members B (N-type steel members) arranged on the left and right, the second link timber 30 may also engage with column B1 and second column B3 of the N-type steel member B.

[0041] <Loading of steel frame members> Next, the procedure for loading multiple steel frame members B onto the lifting unit 1 will be explained based on Figures 6 to 8. Figure 6 illustrates the procedure for stacking steel frame members vertically. Figure 7 illustrates the procedure following Figure 6. Figure 8 is a rear view of the lifting unit with the steel frame members stacked on it.

[0042] The lifting unit 1 can stack two steel frame members B side by side, and can also stack multiple steel frame members B with spacing between them in the vertical direction. Specifically, the lifting unit 1 comprises two support members 10, a plurality of first link timbers 20, and a plurality of second link timbers 30. For example, by stacking two steel frame members B in four layers, a total of eight steel frame members B can be loaded. Furthermore, the wooden supports 20 and 30 may be placed on the upper surfaces of the left and right steel frame members B located in the upper section, and additional building components such as steel frame members B, columns, beams, and ladders may be stacked on top.

[0043] In the "first stage of steel frame member B" shown in Figure 6, V-shaped and N-shaped steel frame members B (first steel frame members BA) are arranged side by side, and these first steel frame members BA are sandwiched and connected by support members 10A and 10B. The left and right first steel members BA are connected by support members 10A and 10B, thereby positioning the V-shaped first steel member BA. Long second timbers 30 are placed at intervals on the upper surfaces of column B1 of the left first steel frame member BA and column B1 of the right first steel frame member BA. The second timbers 30 are engaged with the columns by a pair of lower engaging portions 32. Furthermore, the first link timbers 20 are arranged at intervals on the upper surface of the second column B3 of the first steel frame member BA on the right side. The link timbers 20 are engaged with the second column by the lower engaging portion 22. As shown in Figure 8, the left and right first steel frame members BA are supported from below by long wooden supports (usually wooden supports 40) and are positioned above the installation surface.

[0044] In the "second stage of steel frame member B," V-shaped and N-shaped second steel frame members BB are arranged side by side, and these second steel frame members BB are positioned and supported by the link timbers 20 and 30. Specifically, the V-shaped second steel member BB on the left is supported from below by a long second support beam 30, and the N-shaped second steel member BB on the right is supported from below by the second support beam 30 and the first support beam 20. The second wooden beam 30 is interposed between the first steel member BA and the second steel member BB, which are located on the left side, and engages with the column B1 of the first steel member BA and the second column B3 of the second steel member BB, respectively, and supports the brace B2 of the second steel member BB from below. In this way, the second link timber 30 supports the V-shaped second steel member BB from below, thereby supporting and positioning the unstable V-shaped second steel member BB. In other words, displacement of the column B1 and brace B2 can be suppressed. The first link timber 20 is interposed between the first steel frame member BA and the second steel frame member BB, which are located on the right side, and engages with the second column B3 of the first steel frame member BA and the column B1 of the second steel frame member BB, respectively.

[0045] A first timber 20 is positioned on the upper surface of column B1 of the second steel frame member BB on the left side. The timber 20 is engaged with column B1 by a lower engaging portion 22. A long second link beam 30 is positioned on the upper surfaces of column B1 and column B3 of the second steel frame member BB on the right side. The second link beam 30 connects column B1 and column B3.

[0046] In the "third stage of steel member B" shown in Figure 7, N-shaped and V-shaped third steel members BC are arranged side by side, and these third steel members BC are positioned and supported by link timbers 20 and 30. Specifically, the N-shaped third steel member BC on the left is supported from below by the first support beam 20 and the second support beam 30, and the V-shaped third steel member BC on the right is supported from below by the second support beam 30. In this way, the second link timber 30 supports the V-shaped third steel frame member BC from below, thereby supporting and positioning the unstable V-shaped third steel frame member BC.

[0047] A first timber 20 is positioned on the upper surface of the second column B3 of the third steel frame member BC on the left side. The first timber 20 is engaged with the second column B3 by a lower engaging portion 22. A long second link beam 30 is positioned on the upper surface of column B1 of the third steel frame member BC on the left and column B1 of the third steel frame member BC on the right. The second link beam 30 connects each column B1.

[0048] In the fourth section of steel member B, N-shaped and V-shaped fourth steel members BD are arranged side by side, and these fourth steel members BD are positioned and supported by link timbers 20 and 30. Specifically, the N-shaped fourth steel member BD on the left is supported from below by the first support beam 20 and the second support beam 30, and the V-shaped fourth steel member BD on the right is supported from below by the second support beam 30. In this way, the second link timber 30 supports the V-shaped fourth steel frame member BD from below, thereby supporting and positioning the unstable V-shaped fourth steel frame member BD.

[0049] As in the above embodiment, V-shaped and N-shaped steel members B may be arranged alternately on the left and right and stacked, or V-shaped steel members B may be arranged on the left and N-shaped steel members B may be arranged on the right. Alternatively, N-shaped and N-shaped steel members B may be arranged on the left and right and stacked, or N-shaped and I-shaped steel members B may be arranged on the left and right and stacked.

[0050] <Lifting method> Next, the lifting method using the lifting unit 1 will be explained based on Figures 1 to 8. The method includes at least the following steps: "fixing step," "installation step," "loading step," "hooking step," and "lifting step." A detailed explanation follows. Regarding the construction of the building, explanations of construction processes other than those mentioned above will be omitted.

[0051] First, the worker performs a "fixing process" in which the first support member 10A and the second support member 10B are fixed to both ends of the first steel frame member BA, respectively (Step 1 (S1)). Specifically, as shown in Figures 3 and 6, the worker places the first steel frame members BA, each having a column B1 (B3) and a brace B2, side by side. Then, the first support member 10A and the second support member are fixed to the upper and lower ends of the left and right first steel frame members BA. At this time, the support members 10A and 10B connect the left and right first steel frame members BA, thereby positioning these first steel frame members BA (preventing misalignment). Furthermore, the first mounting hole 13a of the support member 10A and the connection hole B1d of the first steel frame member BA (foundation connection part B1b) are fixed together by fixing bolts. In addition, the second mounting hole 13b of the support member 10B and the connection hole B1e of the first steel frame member BA (beam connection part B1c) are fixed together by fixing bolts.

[0052] Then, the workers perform the "installation process" (step 2) in which they attach the link timbers 20 and 30 to the upper surfaces of the left and right first steel frame members BA. Specifically, as shown in Figures 4 to 6, the worker attaches the second link 30 so as to connect the left V-shaped first steel frame member BA (column B1) and the right N-shaped first steel frame member BA (column B1). Then, the first link 20 is attached to the second column B3 of the right first steel frame member BA. The first link timber 20 and the second link timber 30 engage with the columns B1 and B3 of the first steel frame member BA from above.

[0053] Then, the workers perform the "loading process" (step 3) in which they stack the second steel frame members BB side by side on the top surface of the timbers 20 and 30. Specifically, as shown in Figures 6 to 8, the column B1 (second column B3) of the second steel frame member BB is engaged with the upper surfaces of the first timber 20 and the second timber 30. At this time, V-shaped and N-shaped second steel members BB are arranged so that the long second link timber 30 supports the brace B2 of the second steel member BB from below. In the same manner as described above, the third steel frame member BC and the fourth steel frame member BD are loaded with the link wood 20 and 30 interposed between them.

[0054] Then, the worker performs the "attachment process" (step 4) in which they attach the long lifting sling S to the lifting unit 1. Specifically, as shown in Figure 1, the worker attaches the lifting sling S by circling it around the underside of the lifting unit 1. In this way, the lifting sling S is attached so as to surround the steel frame member B, and holds the steel frame member B from the side and below.

[0055] Then, the worker lifts the lifting unit 1 loaded with multiple steel frame members B and performs the "lifting process" (step 5), which involves lowering the steel frame members B to a designated location inside the building. After completing step 5 above, the series of work processes is finished.

[0056] With the above construction method, even if the steel frame members B are stacked side by side and spaced apart vertically, the steel frame members B can be lifted effectively.

[0057] <Other> In the above embodiment, as shown in Figure 1, the lifting unit 1 comprises two support members 10 and six first and six second link blocks 20 and 30 respectively. However, the number of components for each component is not particularly limited and can be changed. For example, to increase the rigidity of the lifting unit 1 and to load the steel frame member B appropriately, the number of support members 10 and the number of support beams 20 and 30 may be increased. Alternatively, you could stack three (or four) steel members B in a horizontal line, or if the building material is relatively large, you could stack just one (or one) and then stack multiple others vertically with gaps in between.

[0058] In the above embodiment, as shown in Figure 1, the lifting sling S is attached so as to wrap around to the underside of the lifting unit 1, but this is not particularly limited. For example, a sling attachment hole (attachment part) may be formed in the support member 10, and the suspension sling S may be attached to the support member 10.

[0059] In the above embodiment, as shown in Figures 1, 4, and 5, the lifting unit 1 is equipped with a first timber 20 and a second timber 30, but it is not particularly limited. The lifting unit 1 may consist only of the first link timber 20, or it may consist only of the long second link timber 30. The lifting unit 1 may have a longer link tree (third link tree) than the second link tree. In that case, the third link tree should connect three columns (column B1, second column B3). That is, the third link tree should have multiple column engaging parts (lower engaging parts, upper engaging parts).

[0060] In the above embodiments, the lifting unit and lifting method according to the present invention were mainly described. However, the embodiments described above are merely examples to facilitate understanding of the present invention and do not limit it. The present invention can be modified and improved without departing from its spirit, and of course, equivalents thereof are included. In particular, the embodiments described above are merely examples and do not limit the present invention. [Explanation of symbols]

[0061] L Lifting device (crane) L1 Lifting section S Lifting sling (lifting component) B. Steel structural members (building components) BA First steel frame member (first steel frame member) BB Second steel frame member (second steel frame member) BC Third steel frame member (third steel frame member) BD Fourth steel frame member (fourth steel frame member) B1 pillar B1a Column Body B1b Foundation connection section B1c Beam connection section B1d, B1e connection holes B2 Brace B2a Brace Body B2b damper B2c Column connection section B3 Second Pillar B3a Column Body B3b Foundation connection section B3c Beam connection section B3d, B3e connection holes 1. Lifting Unit 10 Support member 10A First support member 10B Second support member 11 Support body 12 Reinforcement protrusion (reinforcement part) 13 Mounting holes (mounting parts) 13a First mounting hole 13b Second mounting hole 20. First Link Tree (Link Tree) 21. The main body of the linden tree 22 Lower engaging portion 23 Upper engaging part 30. Second Rin Tree (Rin Tree) 31. The main body of the apple tree 32 Lower engaging portion 33 Upper engaging part 34. Support plate (plywood) 40 Normal Phosphorus

Claims

1. A lifting unit for lifting multiple building components stacked with spacing between them in the vertical direction, A first support member and a second support member are provided at a horizontal distance from each other and support the first building member by sandwiching it from the side. The structure comprises a first building member and a second building member located above the first building member, and a support beam that supports the second building member from below. The aforementioned lin tree is, The main body of the lintel is placed on the upper surface of the first building component, A lower engaging portion is provided at the lower end of the main body of the linden tree and engages with a part of the first building member, It has an upper engaging portion provided at the upper end of the main body of the linden tree that engages with a part of the second building member, The lifting unit is characterized by supporting the first building member and the second building member in a positioned state.

2. The aforementioned lifting unit is used to lift the building components in a state where they are stacked side by side. The first support member connects the first building members arranged on the left and right, and supports one end of each of the first building members from the side. The second support member connects the first building members arranged on the left and right, and supports the other end of each of the first building members from the side. The lifting unit according to claim 1, characterized in that the aforementioned wooden link connects the first building member and / or the second building member, which are arranged on the left and right sides.

3. The aforementioned lifting unit is used to lift the steel frame members, which are building components, when they are stacked side by side. The lower engaging portion engages with the column of the first steel frame member, The upper engaging portion engages with the column of the second steel frame member, which is located above the first steel frame member. The lifting unit according to claim 2, characterized in that the main body of the wooden frame supports the brace of the second steel frame member.

4. The aforementioned support member is A support body that abuts the longitudinal end face of the first building member, A reinforcing projection that extends continuously from the support body outward from the support body, It has a mounting portion provided on the side surface of the support body and attached to the end face of the first building member, The aforementioned lin tree is, A first link block that engages with a part of the building member and positions the building member, It includes a second link that extends longer than the first link, engages with a part of the building member, and is used to position the building member, The second lin tree is, The long main body of the aforementioned lintel, The lower engagement portions on the left and right are provided at the lower ends of both ends of the main body of the linden tree and engage with a part of the first building member, The lifting unit according to any one of claims 1 to 3, characterized in that it has left and right upper engaging portions provided at the upper ends of both ends of the main body of the linden wood, which engage with a part of the second building member.

5. The aforementioned lifting unit is used to lift the building components in a state where they are stacked side by side. The first and second timbers are arranged so as to be spaced apart in the direction of arrangement of the building components. The first lintel engages with a part of one of the building members, one of the left and one of the building members. The lifting unit according to claim 4, characterized in that the second wooden link engages with a part of the other building member among the left and right building members.

6. The aforementioned lifting unit is used to lift the steel frame members, which are building components, when they are stacked side by side. The first link beam is interposed between the first steel frame member located on one side of the left and right steel frame members and the second steel frame member located above the first steel frame member, and engages with the column of the first steel frame member and the column of the second steel frame member, respectively. The lifting unit according to claim 5, characterized in that the second link is interposed between the first steel frame member and the second steel frame member located on the other side of the left and right steel frame members, engages with the column of the first steel frame member and the column of the second steel frame member, respectively, and supports the brace of the second steel frame member from below.

7. A lifting method using the lifting unit described in claim 1, A fixing step of fixing the first support member and the second support member to both ends of the first building member, The installation process involves attaching the wooden timber to the upper surface of the first building component, A loading step of loading the second building component onto the upper surface of the aforementioned timber, A fastening step of fastening a long lifting member to the lifting unit, The process includes a lifting step of lifting the lifting unit on which the building materials are loaded, A lifting method characterized in that, in the lifting step, the first building member and the second building member are supported in a positioned state by the first support member, the second support member, and the timber.

8. In the fixing process, the first steel frame members, which have a column and a brace connected to the column at a predetermined angle of inclination, are arranged side by side as the first building member. In the aforementioned loading process, As the second building component, the second steel frame members are stacked side by side, The lifting method according to claim 7, characterized in that the second steel frame member is loaded such that the brace of the second steel frame member is supported from below by the long wooden timber.

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