JP2000274079A - Mounting jig for pc column - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a PC column mounting jig facilitating the work of mounting a PC column. SOLUTION: A projection 3 projects transversely from a jig main body 1 raised and lowered by a load hoisting device. The projection 3 is provided with a rotary mounting portion 6 against which a mullion 7 is rotatably supported. The jig main body 1 is tied to the axial lower end of the mullion 7 by an attaching rope 11 which is operated by a winding device. The projection 3 is held in a horizontal attitude by a counterweight 12 or the like. As a result, the mullion 7 can be hoisted while held attached to the jig A, and can be rotated upward, i.e., the attitude of the mullion 7 can be tilted arbitrarily and easily by operation of the winding device to facilitate mounting of a PC column.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction for constructing an exterior part made of a PC, and more particularly to a jig for mounting a PC column such as a mullion for lifting and mounting the column.

[0002]

2. Description of the Related Art When constructing a PC exterior part of a building, P
When attaching the mullion which is the C pillar, the mullion is lifted to the floor of the site by a crane, and an operator inserts the mullion from a slab or an external scaffold from the outside in a state where the mullion is raised upright.

[0003]

However, in the case of the mullion 7 as shown in FIG. 4, the mullion 7 cannot be mounted simply by inserting the mullion 7 from the outside. With the mounting method of dragging in, the worker needs to move to the external scaffold to perform the mounting work, which is dangerous work. In FIG. 4, reference numeral B indicates a cross-sectional example of the mullion 7.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made in consideration of the above-described problems.
It is an object to provide a mounting jig for a pillar.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a jig main body which is lifted and lowered by a lifting device, a projecting portion extending laterally from the jig main body, and a projecting portion. A pivot mounting portion provided on the protruding portion for rotatably supporting the PC column in the vertical direction; a mounting rope connecting the jig main body to a lower end portion of the PC column in the axial direction; A PC column mounting, comprising: a winding device for adjusting the distance from the lower end of the column by winding and rewinding the mounting rope; and counterbalance means for maintaining the posture of the overhang portion. A jig is provided.

According to the present invention, the PC column can be lifted with the PC column attached to the jig, and the PC column can be easily rotated in the vertical direction by operating the hoisting device, that is, arbitrary and The posture of the PC column can be easily tilted, and the mounting work becomes easy.

[0007]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a mounting jig according to the present embodiment. Further, in the present embodiment, the mullion 7 will be described as an example of the PC column, but the present invention can be applied to mounting of another PC column.

Reference numeral 1 denotes a jig main body, on which a first rope 2 for attaching a hook is attached. This first rope 2 does not need to be a rope,
It may be composed of a rod-shaped member. Reference numeral 30 indicates a rope of the lifting device. A beam member 5 extending left and right is fixed to the jig body 1. In the beam member 5, a portion extending to the left with respect to the jig main body 1 in FIG.

As shown in FIG. 2, the overhanging portion 3 has a pair of channel steels 3a facing each other at an interval sufficient to insert the mullion 7 as main constituent members. A reinforcing member is provided between 3a. A second channel 6 extending downward from each channel 3a is provided at the tip of the overhang 3 to form a rotary mounting portion.
A bolt hole is coaxially opened in the second channel steel 6, and the mullion 7 can be supported rotatably in the vertical direction by being bolted through a hole provided in the mullion 7. Reference numeral 8 denotes a filling plate, which is a second channel steel 6.
The space between the bolt 9 and the mullion 7 prevents the bolt 9 from being bent and allows the bolt 9 to be securely tightened.

A drum 10a of a hoisting device 10 is attached to a portion of the beam member 5 located below the jig main body 1, and an attachment rope 11 is wound around the drum 10a. The tip of the attachment rope 11 has a lower end attachment portion attached to the lower end of the mullion 7, so that the attachment rope 11 can connect the jig body 1 and the lower end of the mullion 7. I have. Reference numeral 10b denotes an electric motor of the hoisting device 10, and when the electric motor 10b is operated, the drum 10a rotates to rotate the drum 11a.
And rewind.

In the beam member 5, a portion extending rightward with respect to the jig main body 1 in FIG. 1 forms a counter beam 4, and a counter weight 12 is fixed to the counter beam 4. . Also, the jig body 1
The upper end of the first rope 2 provided in the above and the counterweight 12 (counter beam 4) are connected by a second rope 13, and the second rope 13 is wound and unwound. A winch 14 for adjusting the distance between the upper end of the first rope 2 and the counterweight 12 is provided.

Here, the counter beam 4, the counter weight 12, the first and second ropes 2 and 13, and the winch 14 constitute a counter balance means. The winch 14 may not be provided. If there is no winch 14, the counterweight 12 is adjusted so that the overhang 3 is horizontal or almost horizontal with the mullion 7 attached. The overhang portion 3 is inclined such that the side is on the lower side. However, the inclination amount is small due to the action of the first and second ropes 2 and 13.
Further, the overhanging portion 3 and the upper end of the first rope 2 may be connected by another rope, and the rope and the second rope 13 may constitute a counter balance means.

Here, the cords 15 and 16 for operating the hoisting device 10 and the winch 14 are connected to the beam member 5.
Are extended to the rotation mounting portion side and wound around a projecting portion 17 protruding at the tip of the projecting portion 3, so that the cords 15, 16 and the cords 15, 16 are lifted when the mullion 7 is lifted or the like.
The operation units 18 and 19 connected to the control unit 16 do not interfere. The hoisting device 10 and the winch 1
The operation 4 is not limited to the wired operation, and may be a wireless operation. Next, the mounting of the mullion 7 using the mounting jig A will be described.

First, the mullion 7 is unloaded from the carry-in vehicle and arranged. At this time, each of the lowered mullion 7 is inclined by a support post 20, as shown in FIG. 3, to facilitate attachment to the jig A. In addition, a rubber mat 21 is previously placed in a portion where the lower end of the mullion 7 contacts the ground. The rubber mat 21 is used because, when the mullion 7 is lifted, the mullion 7 rotates in the rising direction with the lower end of the mullion 7 contacting the ground as a fulcrum. This is to protect it from being cured. However,
It is not always necessary to operate the hoisting device 10 to first pull the lower end of the mullion 7 toward the jig body 1 to bring the mullion 7 into a nearly horizontal posture.

Next, the mounting jig A is suspended by a crane and brought close to the mullion 7. At this time, if the counterweight 12 is present as it is, the projecting portion 3 is inclined so that the counterweight 12 side is on the lower side, but the winch 14 is operated in advance (before lifting the mounting jig A, etc.). By winding up and shortening the second rope 13, the overhang portion 3 can be held horizontally.

Next, the bolt hole of the rotary mounting portion 6 and the hole portion of the mullion 7 are made coaxial, and after inserting the filling plate 8, the bolt 9 is fastened through the bolt 9. Note that the support position of the mullion 7 is set at a position slightly above the center of gravity of the mullion 7 in the longitudinal direction of the mullion 7. However, if the position is too high, the load at the time of rotating operation by the hoisting device 10 becomes large.
The upper position of about 200 to 200 mm is the supporting position.

At the same time, the tip of the attachment rope 11 is attached to the lower end 7a of the mullion 7.
Next, the mullion 7 is also lifted upward by lifting the mounting jig A. At this time, the winch 14 is operated to lengthen the unwound second rope 13 so that the overhang portion 3 is held horizontally. Also, by operating the hoisting device 10 to wind up the mounting rope 11 and bring the hulling mullion 7 closer to a horizontal state, the hulling mullion 7 reduces interference with other members during the lifting movement, and It is preferable that the upper end of the mullion 7 can be inserted as it is on the installation floor.

Next, the mounting jig A, that is, the mullion 7 is
Lift to the installation floor. If the shaft of the mullion 7 is in a vertical state when it is lifted, the hoisting device 10 is operated on the mounting floor to incline the shaft of the mullion 7 so that the upper end of the mullion 7 is directed into the mounting space. . Next, the hoisting device 10 is operated to rewind the attachment rope 11,
After changing the posture in the direction in which the mullion 7 is set up and temporarily fixing the upper end of the mullion 7 to a temporary support, a working vehicle, or the like, the mullion 7 is removed from the mounting jig A. At that time, winch 14
It is good to operate to balance. The lower end of the mullion 7 is placed on the PC surface base 31 on the slab 30.

Next, after attaching the eaves, the mullion 7 is set up vertically. Removal from the mounting jig A may be performed at this time. As described above, when the mounting operation is performed using the mounting jig A, the mullion 7 can be easily lifted in an arbitrary posture such as substantially horizontal by operating the hoisting device 10.

Further, even when the mullion 7 is mounted on the mounting floor, by operating the hoisting device 10, the mullion 7 can be easily mounted by tilting the posture of the mullion 7 from the slab 30. Since it is possible, the mullion 7 can be easily attached. Moreover, since it is not necessary for the worker to move to the external scaffold to perform the mounting work, the work can be performed safely and easily even if the work fits as shown in FIG.

Here, in the present embodiment, the hoisting device 10
The electric motor 10b is fixed to the jig main body 1 and the hoisting device 1
0 is arranged as little as possible below the beam member 5 so that the hoisting device 10
Interference with the mullion 7 and the ground is suppressed. Of course, the hoisting device 10 may be configured with a simple winch 14 and provided below the beam member 5 or in the middle of the mounting rope 11.

In the above-described embodiment, the mounted mullion 7 is rotatable as horizontally as possible by providing the rotatable mounting portion 6 below the beam member 5, but the present invention is not limited to this. . For example, a rotary mounting portion may be configured directly on the distal end portion of the beam member 5 (the overhang portion 3). Further, in the above-described embodiment, the rotary mounting portion supports the mullion 7 with the bolt 9, but is not limited to this. For example, the mullion 7 is rotatable by holding the mullion 7 from the left and right and supporting the mullion 7 and attaching the filling plate 8 to the second channel steel 3a so as to be axially rotatable. May be supported. The mullion 7 may be supported in a cantilever shape by protruding the mounting portion laterally from the second channel steel 6.

[0023]

As described above, when the mounting jig of the present invention is adopted, there is an effect that the work of mounting the PC column can be performed easily and safely.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a mounting jig according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a rotation mounting portion according to an embodiment based on the present invention.

FIG. 3 is a diagram illustrating the installation of a mullion according to the embodiment according to the present invention.

FIG. 4 is a diagram for explaining an example of mullion settlement.

[Explanation of symbols]

 Reference Signs List A Attaching jig 1 Jig main body 2 First rope 3 Overhang 4 Counter beam 5 Beam member 6 Second channel steel (rotational attaching part) 7 Marion 8 Filling plate 9 Bolt 10 Hoisting device 11 Mounting rope 12 Counterweight 13 Second rope 14 Winch

Claims (1)

[Claims] 1. A jig main body which is lifted and lowered by a lifting device, an overhang portion extending laterally from the jig main body, and a PC column provided on the overhang portion so as to be rotatable vertically. A rotatable mounting portion to be supported, a mounting rope connecting the jig main body and the lower end of the PC column in the axial direction, and a distance between the jig main body and the lower end of the PC column being hoisted and unwound. A jig for mounting a PC column, comprising: a hoisting device for adjusting the position of the projecting portion; and counterbalance means for maintaining the posture of the overhang portion.