JP4058104B1 - How to lift heavy objects - Google Patents

Abstract

The present invention provides a method for lifting heavy objects such that a heavy object such as an escalator can be conveniently installed by a compact installation method.
A plurality of steel-made beams 2, columns 3A, and rail pieces are brought into the field, a plurality of gate-type steel frames 5 are assembled with the beams 2 and columns 3, and the plurality of gate-type steel frames 5 are arranged in a row at a predetermined interval. The steel tunnel 6 is temporarily installed in line. On the ceiling of the steel tunnel 6 are a trolley formed by connecting the plurality of rail pieces in a direction parallel to the steel tunnel 6, and chain blocks 8A and 8B for lifting heavy objects that can move along the trolley. The escalator part EP as a heavy object is hung by the chain block and conveyed along the trolley.
[Selection] Figure 2

Description

The present invention relates to a lifting method for lifting and transporting escalators and other heavy objects. In particular, the heavy objects can be installed neatly by a compact installation method.

  Conventionally, when installing an escalator in a building, it is not possible to suspend the escalator using a lifting machine such as a crane. Therefore, a method of suspending the escalator with a wire from the ceiling and fixing it in place has been adopted. (For example, see FIG. 5 and FIG. 6 of Patent Document 1).

  However, according to the conventional escalator installation method as described above, since the escalator is suspended from the ceiling with a wire, it is unavoidable. In particular, in a situation where the escalator cannot be hung from the ceiling due to a problem with the strength of the ceiling, it becomes impossible or extremely difficult to install the escalator. In this case, measures such as reinforcing the ceiling can be considered, but with such measures, the escalator cannot be installed neatly because the reinforcement work takes time.

  These problems are not just escalators. Even with heavy objects other than escalators, such as building materials, similar problems occur in the conventional ceiling suspension system described above.

Japanese Patent Laid-Open No. 9-2767

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a method for lifting heavy objects such that escalators and other heavy objects can be installed neatly by a compact installation method. There is.

In order to achieve the above object, the present invention is a lifting method for lifting and transporting a heavy object, and the lifting method includes a plurality of steel beams made of H steel or I steel that can be manually transported , and connecting beams. , Carry the pillars and rail pieces welded to both ends of the plate body with a plurality of bolt insertion holes to the site, assemble a plurality of portal steel frames with the beams and pillars, and line up the plurality of portal steel frames at predetermined intervals By connecting the front and rear portal steel frames with a connecting beam, a steel tunnel composed of a plurality of beams, connecting beams and columns is temporarily installed, and the ceiling of the steel tunnel is parallel to the steel tunnel. A trolley formed by connecting a plurality of rail pieces and a chain block for lifting a heavy object that can move along the trolley are provided, and the heavy object is conveyed along the trolley while the heavy object is suspended by the chain block. The gate Steel is assembled by the following procedure [A1] [A2] [A3 ], wherein the steel tunnel (6), characterized in that it is temporary in the following procedure [B].
Procedure [A1]
It arrange | positions so that two connection beams (13A, 13B) may be connected in series by the upper end part of each of the two pillars (3A, 3B).
Procedure [A2]
Bolts are inserted into the bolt insertion holes (H1, H2) on the upper end side of one column (3A) and the corresponding bolt insertion holes (H1, H2) on the two connecting beams (13A, 13B). The two connecting beams (13A, 13B) are fixed to the upper end of one column (3A) and the other column (3B) also has one column ( As in 3A), the two connecting beams (13A, 13B) are fixed.
Procedure [A3]
The beam (2) was placed on the connecting portion (13C) of the two connecting beams (13A, 13B) fixed to the upper end of the one column (3A), and provided on each connecting beam (13A, 13B). Bolts are passed through the bolt insertion holes (H3, H4) and the corresponding bolt insertion holes (H3, H4) of the beam (2), and the nuts are tightened so that the beam (2) is at the upper end of the column (3A). The beam (2) is also fixed to the upper end of the other column (3B) in the same manner as the one column (3A).
Procedure [B]
By the procedure [A1]-[A3], the portal steel frame (5) including the connecting beams (13A, 13B) protruding forward and backward is assembled, and the connecting beams (13A, 13B) protruding forward and backward are used as the base points. By assembling the next portal steel frame (5), the plurality of portal steel frames (5) are arranged in a line at intervals corresponding to the length of the connecting beams (13A, 13B).

  The height of the portal steel frame (5) is adjusted by connecting the same column (3A, 3B) as the columns (3A, 3B) constituting the portal steel frame (5) or a short column (10) for height adjustment in series. For connecting the same columns, the plate bodies (11) at the ends of the columns are opposed to each other, and bolt insertion holes (H1, H2) of each plate body (11) are connected. A bolt is inserted through the plate and each plate (11) is fastened and fixed with the bolt. The connection between the column and the short column may be performed in the same manner as the connection between the same columns.

In the lifting method of the present invention , as described above, a steel tunnel composed of a plurality of beams, connecting beams, and columns is temporarily installed at the site, and a heavy object is lifted using the temporary steel tunnel to a predetermined position. It uses a method of conveying. In this way, a heavy load is lifted and transported using a steel tunnel. For example, when installing an escalator as a heavy load in the pit next to the stairs in the building, the conventional method of hanging the escalator from the ceiling of the building This type of escalator can be installed with a compact installation method. Moreover, it becomes possible to install an escalator even in a bad situation where the escalator cannot be suspended due to the strength of the ceiling or the like, and the escalator installation can be promoted.

Moreover, according to the lifting method of the present invention, the temporary steel tunnel is composed of parts that can be transported manually such as beams, connecting beams, and columns, so that the assembly and disassembly work can be easily performed in a short time. In addition, the parts can be quickly brought into and removed from the site, and the escalator can be installed neatly in a short time at midnight.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is an embodiment of the present invention, and is a plan view of a site when an escalator is installed in a pit beside a staircase in a building, FIG. 2 is a view as viewed from an arrow A in FIG. 1, and FIG. FIG. 4 is a component diagram of a steel tunnel composed of a plurality of portal steel frames, FIG. 5 is a detailed view of a column, and FIG. 6 is an explanatory diagram when the column is set up on the inclined pit bottom.

The lifting method 1A of the present embodiment carries a plurality of steel-made beams 2, columns 3A, 3B, and rail pieces 4 (see FIGS. 4A, 4B, and 4D) to the site, A plurality of portal steel frames 5 (see FIG. 3) are assembled with the pillars 3A and 3B, and the plurality of portal steel frames 5 are arranged in a row at predetermined intervals on the pits P next to the stairs S as shown in FIGS. Is temporary.

  On the ceiling of the steel tunnel 6, a trolley 7 formed by connecting the plurality of rail pieces 4 in a direction parallel to the steel tunnel 6, a chain block 8 A for lifting heavy objects movable along the trolley 7, 8B.

  As shown in FIG. 3, the gate-type steel frame 5 has a structure in which one beam 2 is supported by two columns 3A and 3B. One column 3A is erected vertically on the step surface of the staircase S and is fixed by an anchor. To do. The other pillar 3B is erected perpendicularly to the bottom surface of the pit P and is similarly fixed by an anchor.

  Although the step surface of the staircase S is horizontal, the bottom surface P1 of the pit P is an inclined surface as shown in FIG. 6B. Therefore, when the other column 3B is placed on the pit P, the bottom surface of the column 3B is It adjusts so that it may stand vertically with the attached angle adjustment metal fitting 9. FIG.

  The beam 2 is attached so as to bridge between the upper ends of the two pillars 3A and 3B, and is arranged along the width direction of the pit P (the same as the width direction of the installed escalator).

  Each gate-type steel frame 5 is adjusted so that the respective beams 2 are all at the same height as shown in FIG. This height adjustment is performed by adding and connecting the same column 3A in series to the column 3A, or by adding and connecting the adjusting short column 10 to the lower end of the column 3A in series.

  As shown in FIGS. 5 (a) to 5 (d) and FIG. 8, the same pillar 3A is connected to each other with the plate bodies 11 welded to the end portions of the respective pillars 3A facing each other. A bolt may be inserted into the insertion holes H1 and H2, and each plate body 11 may be fastened and fixed with a nut. The connection between the column 3A and the adjusting short column 10 is the same.

  The portal steel frames 5 are connected to each other by connecting beams 13A and 13B as shown in FIGS. The connecting beams 13A and 13B are orthogonal to the columns 3A and 3B and the beam 2, and are attached to the upper end portion of the column 3A (see FIG. 7) and near the joint between the columns 3A and 3A.

  In this embodiment, the beam 2 and the connecting beams 13A and 13B have the same size and shape so that the number of types of parts can be reduced as much as possible and the management of the parts is easy. ing.

  FIG. 7 is an assembled perspective view of the gate-type steel frame (only one pillar 3A side), and FIG. 8 is an exploded perspective view (only the one pillar 3A side). Explain how.

Assembling the portal steel frame 5 is first arranged such that the two connecting beams 13A and 13B are connected in series at the upper end of the column 3A (procedure [A1]) . Then, the bolts are passed through the bolt insertion holes H1 and H2 on the pillar 3A side and the corresponding bolt insertion holes H1 and H2 on the side of the connecting beams 13A and 13B, and the two connecting beams are tightened by tightening the nuts. 13A and 13B are fixed to the pillar 3A. The other pillar 3B is configured similarly (procedure [A2]) .

Next, the beam 2 is placed on the connecting portion 13C of the connecting beams 13A and 13B, and the bolt insertion holes H3 and H4 on the side of the connecting beams 13A and 13B and the corresponding bolt insertion holes H3 and H4 of the beam 2 are placed. The beam 2 is fixed to the upper end of the column 3A by passing the bolt and tightening the nut. Similarly, the beam 2 is fixed to the upper end of the other column 3B (procedure [A3]) .

  Further, the reinforcing material 12 is attached to a portion where the beam 2 and the column 3A cross each other, a portion where the one connecting beam 13A and the column 3A cross each other, and a portion where the other connecting beam 13B and the column 3A cross each other, and the beam 2 and the connecting beam 13B. Reinforce. By reinforcing the other pillar 3B side in the same manner, one gate-type steel frame 5 is completed.

The portal steel frames 5 are assembled in the same manner one after another with the connecting beams 13A and 13B projecting forward and backward from the completed portal steel frame 5 as described above. Thereby, the plurality of portal steel frames 5 are arranged in a line at intervals corresponding to the lengths of the connecting beams 13A and 13B, and the temporary steel tunnel 6 is completed (procedure [B]) . The steel tunnel 6 is hollow and has a width and height sufficient to carry in an escalator broken down into parts.

  As shown in FIG. 1, the trolley 7 provided on the ceiling of the steel tunnel 6 has a plurality of rail pieces 4 facing each other so that each rail piece 4 is individually attached to the beam 2 of the portal steel frame 5 with bolts. The structure is attached with a nut (see FIG. 3). Further, as shown in FIGS. 2 and 3, heavy-lifting chain blocks 8 </ b> A and 8 </ b> B provided on the ceiling of the steel tunnel 6 may be a commercially available electric or manual type that can move using the trolley 7 as a track. it can.

When an escalator is installed in the pit P next to the stairs in the building using the lifting method 1A of the present embodiment, the operation is performed according to the following procedure.

<Procedure 1>
A plurality of beams 2, columns 3, rail pieces 4 and the like made of steel shown in FIG. 4 are carried into the escalator installation site, and a plurality of gate-type steel frames 5 are assembled according to the above-described method of assembling the gate-type steel frames 5, FIG. The steel tunnel 6 is temporarily installed in the pit P as shown in FIG. At this time, since the beam 2, the pillar 3 and the rail piece 4 are all configured to have a weight and a size that can be transported by human power, time and labor are not required to carry them.

<Procedure 2>
The tip of the escalator part EP is entered from the entrance (not shown) of the steel tunnel 6 located on the climbing side of the stairs S, and the chain C pulled out from the first chain block 8A is moved to the tip EP1 of the escalator part EP. The tip part EP1 of the escalator part EP is lifted by the chain block 8A (see FIG. 2).

<Procedure 3>
Thereafter, the escalator part EP is further pushed into the steel tunnel 6, the rear end portion EP2 of the escalator part EP is entered into the entrance of the steel tunnel 6, and the chain C pulled out from the second chain block 8B is moved to the rear end of the escalator part EP. The rear end portion EP2 of the escalator part EP is lifted by the chain block 8B and the chain block 8B (see FIG. 2).

<Procedure 4>
When the lifting of the front and rear end portions EP1 and EP2 of the escalator part EP is completed as described above, the escalator part EP is pulled from the front or pushed from the rear, or the pulling work and the pushing work are performed simultaneously. Thereby, the escalator part EP is conveyed to a predetermined installation position as shown in FIG.

<Procedure 5>
The next escalator part (not shown) connected to the escalator part EP previously fixed to the pit is also fixed to the pit P in the same manner according to the procedures 1 to 3. By repeating this up to the last escalator part, the escalator is installed in the pit P.

<Procedure 6>
After the escalator installation is completed, the steel tunnel 6 is dismantled. The dismantling operation may be performed in the reverse manner to the above-described method of assembling the portal steel frame. When the steel tunnel 6 is disassembled, it becomes a beam 2, a pillar 3, and a rail piece 4 that can be transported by human power, so that the removal work after disassembly does not require time and labor.

In the lifting method 1A of the present embodiment described above, when installing the escalator in the pit P, a steel tunnel 6 composed of a plurality of portal steel frames 5 is temporarily installed at the site, and the temporary steel tunnel 6 is used. The escalator parts EP are lifted and transported to a predetermined position in the pit. For this reason, the escalator parts EP will not be as large as the method of lifting the escalator parts EP from the ceiling of the building, and the escalator is installed even under adverse conditions where the escalator parts EP cannot be suspended due to the strength of the ceiling, etc. It becomes possible to do.

In addition, according to the lifting method 1A of the present embodiment, the temporary steel tunnel 6 is composed of parts that can be manually transported, such as the beam 2, the pillar 3, and the rail piece 4, so that the assembly and disassembly work is easy. The escalator can be installed neatly in a short time in the middle of the night.

It is one Embodiment of this invention, Comprising: The top view of the spot when installing an escalator in the pit beside a staircase in a building. The A arrow directional view of FIG. B arrow view of FIG. FIG. 4 is a component diagram of a steel tunnel composed of a plurality of portal steel frames, (a) is a plan view and side view of a beam and a connecting beam, (b) is a plan view of a column, and (c) is a short view The top view of a pillar, (d) is a top view of a rail piece, (e) is a top view of a reinforcement member. FIG. 5 is a detailed view of the pillar, (a) is a plan view of the pillar, (b) is a bottom view thereof, (c) is a top view thereof, and (d) is a side view thereof. It is explanatory drawing when a pillar is stood on the inclined pit bottom face, (a) is a front view of the pillar stood on the bottom face of the pit, and (b) is a side view thereof. The assembled perspective view of the gate-type steel frame (only the first pillar 3A side). The exploded perspective view of a portal steel frame (only one pillar 3A side).

Explanation of symbols

1A Lifting method 2 Beam 3A, 3B Column 4 Rail piece 5 Gate-type steel frame 6 Steel tunnel 7 Trolley 8A, 8B Chain block 9 Angle adjusting bracket 10 Short column 11 Plate 12 Reinforcement 13A, 13B Connecting beam C Chain EP Escalator parts EP1 Escalator parts leading edge EP2 Escalator parts trailing edge P Pit (escalator installation pit)
S Stairs D1, D2 Home F1, F2 Floors H1, H2, H3, H4 Bolt insertion holes

Claims (2)

A lifting method for lifting and transporting heavy objects,
The lifting method is:
Plates (11) having a plurality of steel beams (2), connecting beams (13A, 13B), and a plurality of bolt insertion holes (H1, H2) made of H steel or I steel that can be conveyed manually are at both ends. Bring the welded columns (3A, 3B) and rail pieces (4) to the site,
By assembling a plurality of portal steel frames (5) with the beams and columns, arranging the plurality of portal steel frames in a row at a predetermined interval, and connecting the front and rear portal steel frames with connecting beams (13A, 13B) A steel tunnel (6) consisting of a beam (2), a connecting beam (13A, 13B) and a column (3A, 3B) ,
A trolley (7) in which the plurality of rail pieces (4) are connected to the ceiling of the steel tunnel (6) in a direction parallel to the steel tunnel (6), and a heavy object movable along the trolley A chain block (8A, 8B) for lifting is provided, and the heavy load is transported along the trolley while hanging the heavy load with the chain block,
The portal steel frame (5) is assembled by the following procedure [A1] [A2] [A3],
The said steel tunnel (6) is temporarily installed in the following procedure [B], The lifting method of the heavy article characterized by the above-mentioned .
Procedure [A1]
It arrange | positions so that two connection beams (13A, 13B) may be connected in series by the upper end part of each of the two pillars (3A, 3B).
Procedure [A2]
Bolts are inserted into the bolt insertion holes (H1, H2) on the upper end side of one column (3A) and the corresponding bolt insertion holes (H1, H2) on the two connecting beams (13A, 13B). The two connecting beams (13A, 13B) are fixed to the upper end of one column (3A) and the other column (3B) also has one column ( As in 3A), the two connecting beams (13A, 13B) are fixed.
Procedure [A3]
The beam (2) was placed on the connecting portion (13C) of the two connecting beams (13A, 13B) fixed to the upper end of the one column (3A), and provided on each connecting beam (13A, 13B). Bolts are passed through the bolt insertion holes (H3, H4) and the corresponding bolt insertion holes (H3, H4) of the beam (2), and the nuts are tightened so that the beam (2) is at the upper end of the column (3A). The beam (2) is also fixed to the upper end of the other column (3B) in the same manner as the one column (3A).
Procedure [B]
By the procedure [A1]-[A3], the portal steel frame (5) including the connecting beams (13A, 13B) protruding forward and backward is assembled, and the connecting beams (13A, 13B) protruding forward and backward are used as the base points. By assembling the next portal steel frame (5), the plurality of portal steel frames (5) are arranged in a line at intervals corresponding to the length of the connecting beams (13A, 13B).   Adjustment of the height of the portal steel frame (5)
  The same pillar (3A, 3B) as the pillar (3A, 3B) constituting the portal steel frame (5) or the short pillar (10) for height adjustment is added and connected in series,
  For connection of the same columns, the plate bodies (11) at the ends of the columns are made to face each other, bolts are inserted into the bolt insertion holes (H1, H2) of each plate body (11), Each plate (11) is fastened and fixed, and the connection between the column and the short column is performed similarly to the connection between the same columns.
  The method for lifting a heavy article according to claim 1.

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