JPH11172922A - Beam positioning device and beam positioning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beam positioning device and method capable of easily carrying out a beam positioning work, high in positioning precision and capable of efficiently carrying out the beam positioning work. SOLUTION: The sides of both ends 10e, 10e are set on a floor F corresponding to a position immediately below a PC beam 10 hoisted by a crane so that they are positioned in correspondence with head parts 11r, 11t of each of pillars 11, 11. Additionally a position regulation means (XY table 50 or sliding table 60) to regulate a position of the PC beam 10 in the horizontal direction in a state of positioning the PC beam 10 above the head part of the pillar by supporting a lower surface 10u of the PC beam 10 and a vertical moving means (support 3 and hydraulic jack mechanism 4) free to vertically move this position regulation means are furnished.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam positioning device for positioning a beam lifted by a lifting machine such as a crane when the beam is installed between columns, in a state where the beam is opened from the lifting machine. And a beam positioning method.

[0002]

2. Description of the Related Art Generally, when a precast concrete beam (hereinafter referred to as a PC beam) is erected between columns, the PC beam is lifted to a construction site by a crane or other hoisting machine, and the PC beam is lifted by a hoisting machine. While hanging the PC (with the load on the hoisting machine), the operator who performs positioning work on the pillar gives the operator of the hoisting machine wirelessly while positioning the PC beam. After the positioning operation is completed, the lifting machine is released from the PC beam.

[0003]

However, according to the conventional method as described above, since the positioning operation of the PC beam is directly performed while the PC beam is suspended by the lifting machine, the positioning operation is difficult. In addition, fine positioning could not be performed, and positioning accuracy was poor. In addition, the lifting machine must be restrained until the positioning of the PC beam is completed. Further, after the positioning of the PC beam is completed, the positioning operation is performed until the next PC beam is lifted to the construction site. Since the worker is in a waiting state, there is a problem that work efficiency is low.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a beam positioning device and a beam positioning method capable of easily performing a beam positioning operation, having high positioning accuracy, and efficiently performing a beam positioning operation. The purpose is to:

[0005]

According to a first aspect of the present invention, there is provided a beam positioning apparatus, comprising: a beam (PC beam 1) between columns 11;
0) is a beam positioning device for positioning a beam lifted by a lifting machine such as a crane R in a state where the beam is opened from the lifting machine.
The e and 10e sides are installed on the floor F corresponding to the position directly below the beam (PC beam 10) which is lifted by the hoist so that the pillars 11 and 11 are positioned corresponding to the heads 11t and 11t of the columns 11, 11, respectively. A position adjusting means for adjusting the horizontal position of the beam while supporting the lower surface 10u of the beam and positioning the beam above the head of the column; and The position adjusting means can be moved upward so as to be positioned above the section, and both ends of the beam, for which the horizontal position adjustment by the position adjusting means has been completed, are placed on the heads of the columns. Therefore, it is provided with vertical moving means (the support 3 and the hydraulic jack mechanism 4) capable of moving the position adjusting means downward. In the beam positioning device according to the second aspect, as the position adjusting means according to the first aspect, the beam can be moved in the X-axis direction which is substantially the same direction as the extension direction of the beam, and the beam can be moved. It is provided with an XY table (XY table 50 or 50A) that can be moved in the Y-axis direction that is substantially perpendicular to the direction in which the beam extends. In the beam positioning device according to the third aspect, as the position adjusting means according to the first aspect, the ball 6 is provided in the box 64 so that a part thereof is exposed from the upper surface 63 of the box and is rotatable.
1 comprising a plurality of sliding tables 60 which are capable of moving the beams in the horizontal direction by sliding the lower surface of the beams in contact with the plurality of balls. It is.

The beam positioning method according to a fourth aspect of the present invention provides a beam (PC beam 10) whose positioning has been completed.
3. The beam positioning device (positioning device 1A) according to claim 2, wherein the beam positioning device (positioning device 1A) according to claim 2 is arranged at a floor position corresponding to one end 10m side of the beam (PC beam 10) for positioning with reference to the one end 10e side of A). The beam positioning device (positioning device 1B) according to claim 3 is disposed at a floor position corresponding to the other end 10n side of the (PC beam 10), and the respective beams positioned above the head of the column are positioned. The XY table 5 of the beam positioning device (positioning device 1A) according to claim 2, in adjusting the horizontal position of the beam (PC beam 10) placed on each of the tables 50 and 60 of the devices 1A and 1B.
The position was adjusted by moving 0. The beam positioning method according to claim 5, wherein both ends (10) of the beam (PC beam 10) are provided.
The beam positioning device (positioning device 1A, 1A) according to claim 2 is disposed at a floor position corresponding to the m, 10n side, respectively, and the beam positioning device 1A positioned above the head of the column. , 1A, the XY tables 50, 50 of the two beam positioning devices 1A, 1A are moved to adjust the horizontal position of the PC beam 10. The position of the beam (P) is adjusted by adjusting the position of the beam (P).
The beam positioning device (positioning device 1B, 1B) according to claim 3 is disposed at a floor position corresponding to both ends 10m and 10n sides of the C beam 10), and the beam positioning device is positioned above the head of the column. The beam (PC beam 1) placed on each sliding table 60, 60 of each beam positioning device 1B, 1B.
In adjusting the horizontal position of 0), each of the sliding tables 60 of the two beam positioning devices 1B, 1B
The position is adjusted by sliding the beam through the ball 61 on the wheel 60.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. Each drawing is a diagram for explaining a beam positioning device and a beam positioning method according to the present embodiment. In each figure, 1A, 1B
Is a beam positioning device, 10 is a PC to be positioned
Beam, 10A PC beam that has been installed (positioning work completed),
11 is a pillar. PC beam 10 (10A)
e, 10e. A plurality of (four in a horizontal direction are shown) reinforcing bars 12 (1
2A)... Are provided.
2 (12A) functions as a reference material for positioning reference in the present embodiment. Further, a plurality of reinforcing bars 12B are also provided on the heads 11t, 11t of the columns 11, 11, respectively. In addition, this PC beam 10 (10A), pillar 11,
The rebars 12 (12A) and 12B provided on 11 are threaded.

[0008] The positioning device 1A according to the present embodiment,
As shown in FIG. 8, the positioning method of the PC beam using the 1B is such that, when the lifting machine such as the crane R is opened from the PC beam 10, as shown in FIG.
Positioning work required for connection and fixing by the connection tool 13 including the connection nut 13a and the fixing nuts 13b, 13b, that is, the reinforcing bars 12, 12 of the PC beams 10, 10A.
Adjustment of the center position shift in the horizontal direction between A
And the reinforcing bars 12, 12A of the PC beams 10, 10A are matched to the screw pitch of the connecting nut 13a so that the reinforcing bars 12, 12A can be connected to each other by the connecting nut 13a.
This enables a fine adjustment operation for adjusting the distance between the 2A tips (hereinafter, referred to as pitch adjustment).

Each of the positioning devices 1A and 1B has a floor F
It is installed in. Here, the description will be made on the assumption that it is installed on the lower floor of a building or the like under construction. The positioning devices 1A and 1B have the same structure except that the structure of a table provided at the top is different. That is, as can be seen from FIG. 1 and FIG. 3 when the positioning device 1B of FIG. 1 is viewed from the direction A, two opposing base plates 2, 2 and both end sides of each of the base plates 2, 2 (Supports are respectively located at corners of a square when viewed from above. That is, four supports 3 are provided in total), and the supports 3 are supported by these four supports 3. Hydraulic jack mechanism 4 and piston 4 of hydraulic jack mechanism 4
and a table as a position adjusting means supported on the upper part of FIG. Each of the base plates 2, 2 is provided with two pulleys 2a so as to be able to move on the floor surface, and furthermore, is provided so that the base plate 2 of the positioning device arranged at a predetermined floor position does not move. Two outriggers 2b are provided. Preferably, the pulley 2a has a stopper. In addition, two separate base plates 2 and 2 are opposed to each other, and a facing space B as shown in FIG. 3 is provided. This is because when the positioning devices 1A and 1B are arranged beforehand, they can be installed avoiding a support (not shown) for supporting the column formwork. Therefore, if there is no support to support the column formwork (if the positioning device is installed after removing this support), the form of the base plate is rectangular,
There is no problem with a single base plate having a circular shape or the like, and four supports may be erected on such a flat base plate. If there is no problem in strength, the number of supports of the positioning device may be less than four.

The support 3 is configured so that the length of the inner rod 3b protruding from the outer cylindrical rod 3a can be roughly adjusted stepwise by pinning (not shown). Further, the lower end of the outer cylindrical rod 3a and the upper end of the inner rod 3b are screwed, and the overall length can be finely adjusted by a screw mechanism.
.. And the hydraulic jack mechanism 4 constitute up-down moving means. As described above, the vertical moving means is constituted by the two members of the supports 3, 3,... And the hydraulic jack mechanism 4 because only the piston 4a having a short stroke of the hydraulic jack mechanism 4 during the positioning work described later. It is more convenient to move up and down.

The table provided at the top of the positioning device 1A is an XY table 50 driven by a motor. This is because the PC beam 10 is moved by the motor drive.
The PC beam 10 can be moved in the X-axis direction, which is substantially the same direction as the extension direction of the PC beam 10, and the PC beam 10 can be moved in the Y-axis direction, which is a direction substantially perpendicular to the extension direction of the PC beam 10. . As shown in FIG. 5 as an example, the XY table 50 is movable in the X-axis direction by a motor 52 via screws 53 and guide rails 54, 54.
1 and the motor 56, the screw 57 and the guide rail 5
Y table 55 movable in the Y-axis direction via 8, 58
It comprises. The guide rails 54, 54 of the X table 51 are fixed to the Y table 55, and the X table 51 can be moved independently, but when the Y table 55 is moved, the position of the X table 51 also moves. The XY table 50 functions as a position adjusting unit of the positioning device 1A.

On the other hand, the table provided at the top of the positioning device 1B is a slide table 60. As can be seen from the cross-sectional view of an example shown in FIG. 4, a plurality of balls 61 are rotatably exposed in a box 64 so that a part of the ball 61 is exposed through a hole 62 from an upper surface 63 of the box. The PC beam 10 is configured to be able to move in the horizontal direction by bringing the lower surface 10u of the PC beam 10 into contact with a plurality of balls 61 and sliding it. , Functions as a position adjusting means of the positioning device 1B.

Next, a procedure of a method for positioning the PC beam 10 using the above-described positioning devices 1A and 1B will be described. First, as shown in FIG. 6A, the positioning devices 1A and 1B are moved between the columns 11 and 11 and installed at a predetermined floor position (the outrigger 2b is extended and fixed to the floor). In this case, the installed PC beam 1 for which the positioning work has already been completed
The positioning device 1A is arranged so that the XY table 50 is located at a position directly below the one end 10m side of the PC beam 10 for positioning with reference to the one end 10e side of the 0A, and the other end 10n side of the PC beam 10. The positioning device 1B is arranged so that the sliding table 60 is located at a position directly below the position. And each table 5
The position of the upper surface of 0,60 is almost the head 11 of each pillar 11,11.
The length of the support 3 is adjusted in advance to match the positions of t and 11t. Next, as shown in FIGS. 6B and 6C, the piston 4a of the hydraulic jack mechanism 4 is moved upward, and each table 50, 60 is moved to the head 11 of each column 11, 11.
It is moved to a position slightly higher than the positions t and 11t. In this state, the PC beam 10 is lifted by the crane R and placed on each of the tables 50 and 60 (FIG. 6).
(D)).

Next, as shown in FIG. 7A, the XY table 50 is driven to adjust the position of one end 10m of the PC beam 10 with respect to the one end 10e of the PC beam 10A. In this case, first, the Y table 55 of the XY table 50 is set to Y
The displacement is adjusted by driving in the direction. In this case, the sliding table 6 follows the movement of the Y table 55.
Even on the 0 side, the PC beam 10 slides and the position moves, so that the displacement can be adjusted only by driving the Y table 55. Next, the X table 5 of the XY table 50
1 is driven in the direction of the arrow X to adjust the pitch. In this case, the PC beam 10 also slides on the slide table 60 side, and the position of the PC beam 10 moves by the same amount in the same direction as the X table 51 has moved.
Pitch adjustment can be performed only by driving the table 51.

Thereafter, the piston 4 of the hydraulic jack mechanism 4
is retracted, the outrigger 2b is returned to the original position (FIG. 7B), and finally the reinforcing bar 12 of the PC beam 10 and the PC
The reinforcing bar 12A of the beam 10A is connected with the connecting nut 13a (FIG. 7C). In addition, in the state of FIG.
When the shape accuracy of the beams 10 and 10A is different,
If the accuracy of the plane level of the head 11t is poor,
In such a case, the hydraulic jack mechanism 4 may be used so that the vertical position of the reinforcing bar 12 of the PC beam 10 matches the position of the reinforcing bar 12A of the PC beam 10A. After adjusting the vertical position of the tables 50 and 60, the rebars 12 and 12A are connected to each other by the connection nut 13a.
You just need to connect. When performing this vertical alignment, it goes without saying that the outrigger 2b is extended and the positioning device is stabilized. Thereafter, as shown in FIG. 7D, the process returns to the first step, and the same steps are repeated thereafter. Thereafter, although not directly related to the present invention, a continuous beam is obtained by surrounding concrete spaces between the PC beams, which have been subjected to the positioning work, by injecting concrete.

Embodiment 2 In the first embodiment, the installed PC beam 10 for which the positioning operation has been completed has been completed.
PC beam 1 for positioning with reference to one end 10e side of A
The positioning device 1A is arranged corresponding to one end 10m of the PC beam 10 and the positioning device 1b is arranged corresponding to the other end 10n of the PC beam 10. The positioning devices 1A, 1A may be arranged on any of the 10n sides. That is,
The positioning operation may be performed using the two positioning devices 1A, 1A. In this case, the positioning procedure is basically the same as the procedure shown in FIGS. 6 and 7, but in the shift adjustment and the pitch adjustment in FIG. 7A, the XY of both positioning devices 1A, 1A is adjusted. Table 50, 50
Need to be driven. In the deviation adjustment, the Y tables 55 of the XY tables 50 may be driven independently. In the case of pitch adjustment, the XY tables 50 of both positioning devices 1A, 1A
1, 51 may be simultaneously driven in the same direction by the same amount. According to the present embodiment, since two XY tables 50 are required, the cost is increased. However, since the positioning operation is performed by motor control, there is an advantage that a highly accurate positioning operation can be performed easily and quickly.

Embodiment 3 Also, one end 1 of the PC beam 10
The positioning device 1B is provided on both the 0m side and the other end 10n side.
1B may be arranged. That is, the positioning operation may be performed using only two positioning devices 1B. Also in this case, the positioning procedure is basically the same as the procedure shown in FIGS.
In the displacement adjustment and the pitch adjustment in (a), a worker who performs positioning work on the heads 11t, 11t of the columns 11, 11 pushes the PC beam 10 by human power and slides the slide tables 60, 6.
The position of the PC beam 10 is adjusted so as to slide on the zero. According to the present embodiment, the XY table 5
Since 0 is not used, the cost is reduced. In general, deviation adjustment and pitch adjustment are adjustments in units of mm, so that a method of performing position adjustment by manual power using the slide table 60 as in the present embodiment is also possible.

Embodiment 4 Although it depends on the distance between the columns 11, 11 (in other words, the length of the PC beam 10), when the distance is short or not significantly long, only one positioning device 1B is required and the PC beam 10 The positioning operation may be performed by installing the apparatus at a floor position corresponding to (immediately below) the substantially central lower surface in the length direction. in this case,
The work procedure is the same as in the third embodiment.

Embodiment 5 Further, instead of using one positioning device 1B as in Embodiment 4, one positioning device 1A may be used. In this case, the PC beam 10 is placed on the XY table 50.
If it is placed obliquely with respect to the center line a of A (see FIG. 2), it cannot be corrected.
It is necessary to place black ink for positioning on the heads 11t, 11t of the PC 11 in advance, and to set the PC beam 10 in a straight state by the crane R in advance. That is, FIG.
As shown in (c) and (d), the XY table 50 is positioned below the head 11t of the column 11 instead of previously positioning the table above the column head. Of both ends 10e, 10e of head 11 of each pillar 11, 11
Crane R so that it matches the ink put on t, 11t
After placing the PC beam 10 on the head of each column, the XY table 50 is moved upward by operating the hydraulic jack mechanism 4 so that the PC beam 10 is positioned above the head of each column. In the state where the XY table 50 is moved, the XY table 50 is driven to perform position adjustment. In FIG. 2, the PC beam 10A is positioned such that the center line a of the PC beam 10A and the center line b of the PC beam 10 coincide with each other.
Although the beam 10 is located, if the PC beam 10 is placed on the columns 11 and 11 in advance so that at least the center line a of the PC beam 10A and the center line b of the PC beam 10 are parallel, In the present embodiment, deviation adjustment using the XY table 50,
The pitch can be adjusted.

The method according to the second embodiment is the most expensive in terms of cost, but is the most excellent in that highly accurate positioning can be performed easily and quickly. Since the method according to the third embodiment requires human power, workability is inferior to that of the first and second embodiments, but is lower in cost than the first and second embodiments. The method according to the fourth embodiment is the cheapest in terms of cost. The method according to the fifth embodiment has to perform positioning in accordance with the black ink at the time of mounting by a crane. However, except for this point, the method according to the fourth embodiment is superior in workability, The cost is lower than in the first to third embodiments. The method according to the first embodiment is cheaper than the second embodiment, and can easily and quickly perform a positioning operation with high accuracy comparable to the second embodiment.
In addition, since only one XY table 50 needs to be drive-controlled in the position adjustment, workability is superior to that of the second embodiment. The method of the first embodiment is inexpensive, can perform high-precision positioning work easily and quickly, and
It is overall better in terms of workability, and may actually be the most practical.

In the fifth embodiment, since the PC beam 10 is moved by one XY table 50, the XY table 50 is used.
Requires a motor having a larger power than those of the first and second embodiments. Also in the first and second embodiments, the power of the drive motor of the XY table 50 is P
In consideration of the weight of the C beam 10 and the like, it is necessary to select a beam having sufficient power to move the PC beam 10 smoothly. In the third and fourth embodiments, if a liquid or the like that reduces friction is applied to the lower surface 10u of the PC beam 10 in advance, the PC beam 10 becomes easier to slip, and workability can be improved. .

In the first to fourth embodiments, the positioning operation can be performed in the same procedure as in the fifth embodiment. That is, as shown in FIGS. 6 (c) and 6 (d), the table is not positioned in advance above the column head, but is positioned below the column head. 10 is placed on the head of each pillar (in this case, black ink may be applied to the head of each pillar in the same manner as in the fifth embodiment, and placed so as to match the black ink. And
Alternatively, the table may be moved upward by the hydraulic jack mechanism 4 to move the PC beam 10 above the head of each column. In this state, position adjustment using a table may be performed.

The motor drive of the XY table 50 is controlled by a controller (not shown). The hydraulic jack mechanism 4 can be driven by mounting a pump (not shown).

Although the vertical moving means is constituted by the supports 3, 3,... And the hydraulic jack mechanism 4, the vertical moving means may be constituted only by the hydraulic jack mechanism having a long stroke piston. Alternatively, the up and down moving means may be constituted only by the support. In the case where the inner rod 3b is constituted only by the support as described above, the inner rod 3b is configured to be expanded and contracted by a screw mechanism (for example, a structure like a pillar for extending a volleyball net), and is driven by a motor or manually.
The entire length may be adjusted by expanding and contracting the length.

In the first, second, and fifth embodiments, an XY table 50A as shown in FIG. 9 may be used instead of the motor-driven XY table 50. That is, a slide type XY table 50A is used in which the X table 51 slides via the guide rail 54 and the Y table 55 slides via the guide rail 58. In this case, the work is performed as described in the third embodiment (that is, the positioning operator on the pillar adjusts the position of the PC beam 10 by manually pushing the PC beam 10 and sliding the XY table 50A). ). When such an XY table 50A is used in the fifth embodiment, as described in the fifth embodiment, it is necessary to place the PC beam 10 on a pillar in advance so as to match black ink.

The positioning for connecting the threaded reinforcing bar 12 provided on the PC beam 10 to the reinforcing bar of the PC beam 10A with the connection nut 13a has been described. The present invention can be applied to the positioning of a beam not having such a reinforcing bar.

[0027]

As described above, according to the beam positioning apparatus and the beam positioning method of the present invention, the beam positioning operation can be performed accurately and easily.
The effect that the positioning operation can be performed efficiently can be obtained.

[Brief description of the drawings]

FIG. 1 is a diagram schematically illustrating a beam positioning method using a beam positioning device according to a first embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a diagram showing a positioning device as viewed from a direction A in FIG. 1;

FIG. 4 is a cross-sectional view illustrating an example of a slide table.

FIG. 5 is a perspective view showing an example of an XY table.

FIG. 6 is a process chart showing a procedure of a beam positioning method according to the first embodiment.

FIG. 7 is a process chart showing a procedure of a beam positioning method according to the first embodiment.

FIG. 8 is a diagram showing details of a reinforcing bar and a connection tool.

FIG. 9 is a perspective view showing an example of an XY table.

[Explanation of symbols]

1A, 1B Positioning device, 3 support, 4 hydraulic jack mechanism, 10 PC beam to be positioned, 10
A PC beam already installed, 11 pillars, 11t pillar head,
R crane, 50, 50A XY table (position adjustment means), 60 slide table (position adjustment means).

Claims (6)

[Claims] 1. A beam positioning device for positioning a beam lifted by a hoist such as a crane when the beam is erected between pillars in a state where the beam is opened from the hoist. It is installed on the floor corresponding to the position directly below the beam that is lifted by the hoisting machine so as to be located corresponding to the head of each column, and supports the lower surface of the beam to support the beam. Position adjusting means for adjusting the horizontal position of the beam while being positioned above the head, and moving the position adjusting means upward so that the beam is positioned above the head of the column. Up and down moving means capable of moving the position adjusting means downward in order to place both ends of the beam, which has been horizontally adjusted by the position adjusting means, on the heads of the columns, Beam positioning characterized by comprising: Device. 2. The position adjusting means is capable of moving the beam in the X-axis direction which is substantially the same as the direction in which the beam extends, and moving the beam in a direction substantially perpendicular to the direction in which the beam extends. The beam positioning device according to claim 1, further comprising an XY table that can be moved in the Y-axis direction. 3. The position adjusting means comprises a plurality of balls arranged in a box so that a part thereof is exposed from the upper surface of the box so as to be rotatable. The beam positioning device according to claim 1, wherein the sliding table is a sliding table that can move the beam in a horizontal direction by contacting the plurality of balls and sliding the ball. 4. A beam positioning method for positioning a beam to be lifted by a hoist such as a crane when the beam is erected between pillars in a state where the beam is opened from the hoist. The beam positioning device according to claim 2 is disposed at a floor position corresponding to one end of the beam that performs positioning based on one end of the completed beam, and the floor is positioned at a floor corresponding to the other end of the beam. In arranging the beam positioning device according to claim 3, in adjusting the horizontal position of the beam placed on each table of the beam positioning device positioned above the head of the column, 3. A beam positioning method according to claim 2, wherein the position adjustment is performed by moving an XY table of the beam positioning device according to claim 2. 5. A beam positioning method for positioning a beam to be lifted by a lifting machine such as a crane when the beam is installed between columns, in a state where the beam is released from the lifting machine. The beam positioning device according to claim 2 is disposed at a floor position corresponding to both end sides, and the beam positioning device is located on each XY table of the beam positioning device positioned above the head of the pillar. When adjusting the horizontal position of the beam, the XY table of the two beam positioning devices is moved to adjust the position. 6. A beam positioning method for positioning a beam to be lifted by a lifting machine such as a crane in a state where the beam is opened from the lifting machine when the beam is installed between the columns. The beam positioning device according to claim 3 is disposed at a floor position corresponding to both end sides, and the beam positioning device is placed on each sliding table of the beam positioning device positioned above the head of the pillar. Positioning the beams by adjusting the horizontal position of the beams by sliding the beams via balls on each sliding table of the two beam positioning devices. Method.