JPH08282970A - Equipment for dismantling or assembling a temporary mast - Google Patents

Abstract

(57) [Summary] [Purpose] It is an object of the present invention to provide a device for disassembling or assembling a temporary mast that can disassemble or assemble the temporary mast without requiring a large machine such as a crane. [Structure] An elevating table 11 that moves up and down along a temporary mast 1 that is installed by connecting units 1a in the longitudinal direction, and a column 12 that is rotatably attached to the upper part of the elevating table and has a bent upper end. An elevating mechanism 14, 15, 16, 17, 18 provided on an upper end portion of the column and a handle member 22 provided on the column for turning the column.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for disassembling or assembling a temporary mast, which can disassemble or assemble the temporary mast without using a large crane.

[0002]

2. Description of the Related Art There is a case where an all-weather construction can be performed by covering an upper part of a construction site with a retractable roof. In this case, as shown in FIG. 4, a plurality of temporary masts 1 are installed on the site 3 of the construction site, and the elevators 4 are arranged on these temporary masts 1 so as to be vertically movable by, for example, a rack and pinion mechanism. An openable and closable temporary roof 2 is hung between the elevators 4 of the.

Here, the temporary mast 1 is formed by connecting a plurality of units 1a in the height direction with a connecting tool such as bolts, and each unit 1a is hoisted by a large crane and assembled sequentially. At the same time, even when dismantling, it is suspended by a large crane and disassembled sequentially.

[0004]

However, in the conventional dismantling and assembling method of the temporary mast, since a large crane is used for dismantling and assembling, it is not possible to use the above-mentioned retractable roof on a narrow site in an urban area. Although a crane or the like can be used before the building is constructed, there is a problem that the crane or the like cannot be used when the building is constructed. Therefore, in a narrow site in an urban area, there is no choice but to give up the use of the retractable roof.

The present invention has been made in view of the above circumstances, and provides an apparatus for disassembling or assembling a temporary mast that can disassemble or assemble the temporary mast without requiring a large machine such as a crane. The purpose is to

[0006]

An apparatus for disassembling or assembling a temporary mast according to claim 1 of the present invention is an elevator which moves up and down along a temporary mast installed by connecting units in the length direction. A base, a support column pivotably attached to the upper part of the lifting platform and having an upper end bent, a lifting mechanism provided at the upper end of the support column, and a handle member provided on the support column for rotating the support column. It is characterized by having.

An apparatus for disassembling or assembling a temporary mast according to a second aspect of the present invention is the apparatus for disassembling or assembling a temporary mast according to the first aspect of the present invention. It is characterized in that a workbench on which an operator can ride is provided for turning the vehicle.

[0008]

When the temporary mast is disassembled by using the device for disassembling or assembling the temporary mast according to the present invention, the elevating table is raised along the temporary mast and the uppermost unit of the temporary mast is slightly moved. Stop before you. Then, the worker rides on the lift table and links the uppermost unit of the temporary mast with the lifting mechanism, and cuts off the uppermost unit. Then, the elevating mechanism is driven to slightly lift the uppermost unit. Further, the operator operates the handle member to rotate the support column by about 180 ° to move the suspended uppermost unit to the side of the temporary mast. In this state, the lifting platform is lowered below the temporary mast, and the uppermost temporary mast is removed from the lifting mechanism. Then, by moving the lifting platform to the uppermost part of the temporary mast and repeating the above procedure, the temporary mast can be disassembled sequentially from the upper part. The temporary mast can be assembled by performing the reverse procedure to the above.

As described above, the temporary mast can be disassembled or assembled by elevating the elevating table and suspending the unit on the elevating mechanism, and a large apparatus such as a crane used in the past is not necessary. , A retractable roof can be used even in a small urban area.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus for disassembling or assembling a temporary mast according to an embodiment of the present invention will be described below with reference to the drawings. Note that the same components as those of the conventional example shown in FIG.

As shown in FIGS. 1 to 3, an apparatus 10 for disassembling or assembling a temporary mast according to the present embodiment includes an elevating table 11 which is attached so as to be able to move up and down along the temporary mast 1. The lifting table 11 is provided with a pinion gear (not shown) that meshes with a rack (not shown) provided on the temporary mast 1. By rotating the pinion gear with a diesel engine or the like, the lifting table 11 Is moved up and down along the temporary mast 1.

The elevating table 11 is constructed by arranging frame members 11a made of an angle member or a channel member on each side of a cube and joining them by welding. The frame members 11a are appropriately reinforced by braces 11b. ing.

A bracket 1 is provided on a side surface of the lift table 11.
3 is attached to the bracket 13, and a column 12 having an upper end bent is attached to the bracket 13 so as to be rotatable (turnable) about its axis. A handle member 22 for manually rotating the support column 12 is fixed to the center of the support column 12 in the longitudinal direction. Further, a winder (for example, an electric winder) 14 that winds a wire is provided on the column 12 near the handle member 22, and the wire 15 unwound from the winder 14 is the column 12.
Via the pulley 16 attached near the tip of the
It is connected to the tip of 2. The wire 15 between the pulley 16 and the column 12 is linked with a pulley 17 so as to be able to move up and down. The pulley 17 is provided with a hook 18 for suspending the unit 1a of the temporary mast 1. In addition, the winder 14, the wire 15, the pulley 17, and the hook 18
Constitutes the lifting mechanism of the present invention.

The frame member 11a is provided with a work table 19 on which a worker rides to perform work.

Next, a method of using the apparatus 10 for disassembling or assembling the temporary mast according to the present invention will be described.

When disassembling the temporary mast 1, the elevating table 11 is raised along the temporary mast 1 and the temporary mast 1 is removed.
Is stopped just before the uppermost unit 1a.

Next, an operator rides on the elevator 19 and connects the wire 20 to the uppermost unit 1a of the temporary mast 1, and connects the hook 20 of the pulley 17 to the wire 20. After this, the bolts and nuts that connect the uppermost unit 1a to the lower temporary mast 1 are removed, and the uppermost unit 1a is cut off.

Next, the winder 14 is driven to slightly lift the uppermost unit 1a. Further, the operator operates the handle member 22 to move the support column 12 to approximately 180 degrees.
Rotate by ° to move the suspended uppermost unit 1a to the side of the temporary mast.

In this state, the elevator 11 is lowered below the temporary mast 1 and stopped near the ground, and the unit 1a is removed from the hook 18.

Then, the elevator 11 is moved to the uppermost part of the temporary mast 1 and the above procedure is repeated, whereby the temporary mast 1 can be sequentially disassembled from the upper part of the unit 1a.

On the other hand, the unit 1a of the temporary mast 1 can be sequentially assembled by performing the procedure reverse to the above procedure.

In the apparatus for disassembling or assembling the temporary mast of this embodiment, the heavy object is hung along the temporary mast 1 by suspending the heavy object on the column 12 through the wire 15 and elevating the lifting table 11. It can also be used for transportation purposes.

[0023]

As described above, according to the first aspect of the present invention.
According to the device for disassembling or assembling the temporary mast described in the above, the lifting table that moves up and down along the temporary mast that is installed by connecting the units in the longitudinal direction, and is attached to the upper part of the lifting table so as to be rotatable. Since the support mast has a bent upper end, an elevating mechanism provided at the upper end of the mast, and a handle member provided on the mast for rotating the mast, the temporary mast is used as a large crane. Can be disassembled or assembled without.

Further, according to the device for disassembling or assembling the temporary mast according to the second aspect, the work table on which the worker can ride to turn the pillar is provided on the upper part of the lifting table. Since it is provided, workability and safety of disassembly and assembly work can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing an apparatus for disassembling or assembling a temporary mast according to an embodiment of the present invention.

2 is a side view of the device of FIG. 1. FIG.

3 is a plan view of the device of FIG. 1. FIG.

FIG. 4 is a view showing a retractable roof using a conventional temporary mast.

[Explanation of symbols]

 10 Device for disassembling or assembling temporary mast 11 Lifting platform 12 Strut 14 Winder 15 Wire 16 Pulley 17 Pulley 18 Hook 19 Workbench 22 Handle member

Claims (2)

[Claims] 1. An elevating table that moves up and down along a temporary mast that is installed by connecting units in the length direction, a column that is rotatably attached to the upper part of the elevating table, and has a bent upper end. An apparatus for disassembling or assembling a temporary mast, comprising an elevating mechanism provided at an upper end of a pillar and a handle member provided on the pillar for turning the pillar. 2. The dismantling of the temporary mast according to claim 1, wherein a workbench on which an operator can ride is provided on the upper part of the elevating table in order to rotate the column. Or a device for assembling.