JP2729932B2 - Method of assembling beam rebar and work support for it - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling a beam rebar and a work column therefor.

[0002]

2. Description of the Related Art The inventor of the present invention has previously described in Japanese Patent Application No. 6-27292 a method of assembling a rebar of this type and a working column therefor.
No. 8 was proposed.

In this prior art, a lifting drive source (30),
Several sets (A1-L) of working columns (A) equipped with the lifting hooks (B) for locking the reinforcing bar supporting bar operated by this.
(A2-L) (A3-L) (A1-R) (A2-R)
Using (A3-R), these are lifted and lowered (B)
It is set up at the work site as a left-right parallel state where comrades face each other, and the reinforcing bar support bars (40) are engaged with each other so as to be freely disengageable and horizontally suspended between the left and right sides of the lifting hook (B). Keep it.

[0004] First, in a state where the lifting hook (B) is lowered to a certain height by the lifting driving source (30), a required number of star wraps (a) are added to the reinforcing bar support bar (40). The required number of upper main bars (b) passed through the frame of the star wrap (a)
The lifting hook (B) was simultaneously raised at a time by holding it on the reinforcing bar support bar (40), and the star wrap (a) was kept suspended from the upper main bar (b). The upper main bar (b) and the star wrap (a) are bound together, while the lower main bar (c) and the star wrap (a) passed through the frame of the star wrap (a) are bound together. I have.

[0005]

That is, in the above prior art, the required number of the lower main bars (c) is set into the frame of the star wrap (a) kept suspended from the upper main bars (b). Since this is an assembling method, the star wrap (a) and the upper main bar (b) must be bound before the lower main bar (c) is passed through, so that the star wrap (a) may be misaligned. Due to the swinging motion, it is difficult to smoothly and quickly pass the lower main bar (c) into the frame, and the upper main bar (b) and the lower main bar (c) with respect to the star wrap (a) are difficult. Cannot be efficiently and collectively performed at once.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to improve such a problem, and as a method of assembling a beam reinforcing bar, a lifting drive source and a lifting hook and fixing for a reinforcing bar support bar operated by the same are provided. The work columns equipped with the hooks are set up in a left-right parallel state at the work site as several sets, one set facing each other with the lifting hooks and the fixed hooks facing each other.

The lifting and lowering reinforcing bar support bar and the fixed reinforcing bar support bar are engaged with each other between the left and right sides of the lifting hooks and the left and right sides of the fixed hooks so as to be detachable and horizontal. ,

First, under the condition that the lifting hook is lowered to a certain height position by the lifting driving source, a required number of star wraps are laid on the lifting rebar support bar and the star wrap is placed in the frame of the star wrap. The required number of upper main reinforcements passed in is put on the elevating rebar support bar, and the required number of lower main reinforcements also passed in the frame of the star lap is put on the fixed reinforcement support bar, and locked in the mounted state, respectively.

Then, the lifting hook is raised simultaneously by the lifting drive source to a height at which the lower main bar is transferred from the fixed reinforcing bar support bar to the star wrap, and the star wrap and the lower main bar are moved from the upper main bar. While maintaining the suspended state, bind the upper main bar and the lower main bar to the star wrap,

Finally, the two reinforcing bars are detached from the lifting hook and the fixing hook, respectively.

[0011] Further, because of the structure as a working column used in the assembling method, a hollow column main body integrally formed in a rectangular shape in a plan view with an opening window for a lifting hook extending in the vertical direction is opened;

A stable grounding panel integrally projecting from a lower end of the column body;

A chain driven sprocket and a chain driving sprocket rotatably supported on the upper end and the lower end of the column body, respectively;

A lift chain wound between the upper and lower sides of the chain driven sprocket and the chain driving sprocket;

A forward / reverse rotation motor attached to a lower end portion of the column body in a power transmission connection state with a chain drive sprocket for driving the lift chain to rotate;

As a relation state derived from the exit window of the column main body, a lifting hook attached and integrated in the middle of the lift chain,

A fixed hook attached and integrated near the lower end of the column main body is provided as a relational state parallel to the lower side of the lifting hook.

The upper main reinforcing bar is used by an elevating rebar supporting bar that is used to be detachably engaged with the elevating hook from above. It is characterized in that the main muscles are determined to support each other.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings. FIGS. 1 to 7 show a working column (A) used in a method of assembling a beam reinforcing bar.
Assuming that it has a constant height of 50 mm, a square (approximately 150 x 15
0mm) Hollow pillar body (11) integrated into the framework
And a stable grounding board (14) fixed to the lower end of the support body (11) in a horizontal overhang state via an angle stay (12) and bolts (13).

However, even though the column body (11) is frame-integrated into the above-mentioned rectangular hollow, the space between the opposed lip-groove steels is a vertically extending hook-out window for a hook having a constant width along the vertical direction. 15), from which a lifting hook, which will be described later, is led out to the front portion of the column body (11). In the illustrated embodiment, the outlet window (15) is also formed in the back of the column body (11). However, the back may be kept closed by a back plate or the like.

(16) is a pair of front and rear connecting plates fixed at the upper end of the column main body (11) and opposed to each other of the lip channel steel, and (17) is also the upper surface of the column main body (11). This is a top cover for covering the part, in which a hanging bracket (18) of the work support (A) itself is planted. (19) is a handle integrally projecting from the back of the support body (11) at a mid-height position, and (20) is a stable grounding board (14) corresponding to the handle (19). It is a pair of rubber wheels or a free wheel with a brake pivotally supported on the rear part, and is used in conjunction with the handle (19) for artificially pulling the working column (A).

Further, (21) is a pair of opposing bearings (pillow blocks) fitted and fixed to the upper end of the column main body (11) in a state to be accommodated in the above-mentioned lip grooved steel. Sprocket (2
The rotation support shaft (23) of 2) is supported in a horizontal and horizontal state.

(24) is a pair of opposed bearings (pillow blocks) fitted and fixed to the lower end of the column main body (11) in a state to be accommodated in the inside of the lip grooved steel, whereby the chain drive sprocket (25) is provided. ) Is also horizontally supported.

In this case, the chain drive sprocket (2)
The rotating shaft (26) of (5) extends through one of the bearings (24) horizontally and extends to the outside of the column body (11), and has a transmission sprocket (27) at its extension end. Are fixed so that they can rotate together.

(28) is a vertical positional relationship between the chain driven sprocket (22) and the chain drive sprocket (25), which is located between the upper and lower parts. A guide, which comprises a lip channel steel bent inwardly bent lip defining a roller channel guide rail (29), described below, between the opposing channels. It is a matter of course that a convex guide rail (29) instead of the groove type may be integrally and protruded inward from the column body (11) itself.

An elevation drive source (30) is attached to the lower end of the column body (11) from the back thereof via bolts (31) and the like, and is a lifting / lowering drive source. An endless transmission chain (33) is wound between the output sprocket (32) and the transmission sprocket (27). Reference numeral (34) denotes an openable and closable cover case for covering the transmission chain (33) and the elevating drive source (30), which is attached to the work support (A).

Further, (35) is a lift chain wound between the upper and lower parts of the chain driven sprocket (22) and the chain driving sprocket (25), and a pair of upper and lower tension adjusting tools ( 36)
The lifting base frame (37) is fastened via the.

That is, the lift chain (35) is driven to rotate by the power from the drive source (30),
The elevating base frame (37) interposed in the middle of the lift chain (35) is adapted to perform the elevating operation.

As shown in FIG. 4, the lifting base frame (37) is frame-integrated into a square having a size to be led out through the lifting hook lead-out window (15) of the support body (11). Bolts (3
The lifting hook (39) is mounted and fixed via 8) and the like. The upper and lower hooks (39) are engaged with the ends of the lifting and lowering reinforcing bar support bars (40) from above. Then, the lifting bar support bar (4
By 0), an upper main bar described later is supported.

However, as long as the lifting hook (39) can be led out from the lead-out window (15) of the column body (11),
Even if it is formed continuously and integrally with the lifting base frame (37), it may be acceptable. The lifting rebar supporting bar (40) is preferably made of an angle type steel having a fixed length as shown in FIGS. 8 and 9 and bears a reinforcing bar receiving notch (41) on the upper surface thereof. A plurality of pieces are provided in a distribution state in which a predetermined interval pitch (P1) is maintained in advance.

On the other hand, a pair of upper and lower rollers (42) are rotatably supported by a horizontal support shaft (43) on the back surface of the lift base frame (37) which is immersed in the support body (11). The roller (42) is supported by the support body (1).
By rolling the guide rail (29) defined in 1), the lifting hook (39) can be smoothly and correctly raised and lowered. In this regard, in the illustrated embodiment, a total of four rollers (42) made of a synthetic resin such as nylon are pivotally supported, but it is sufficient if at least two pairs are installed.

Reference numeral (44) denotes a fixed hook which forms a pair with the lifting hook (39). The fixed hook is located below the lifting hook (39) in the vicinity of the lower end of the column body (11). Comes integrated.

In this respect, in the illustrated embodiment, the support body (1
A pair of rigid receiving frames (45) are attached and fixed to both side surfaces of (1), and the front ends of the fixing hooks (44) inserted into each of them are projected in the same front direction as the lifting hook (39). Although they are kept in a parallel state, their receiving frames (4
5) may be omitted, and the fixing hook (44) may be directly attached to the side surface portion or the front surface portion of the column body (11) to be integrated.

The fixed hooks (44) are arranged in parallel with each other.
The number is not limited to a pair and may be one of them. Furthermore, the fixing hook (44) does not protrude in the same front direction as the lifting hook (39), and can be attached to the side surface of the column main body (11) in a short manner.

In any case, the end of the fixed reinforcing bar support bar (46) is also attached to the fixed hook (44) from above.
It is used so as to be able to be freely engaged and disengaged, thereby supporting a lower main bar described later. As shown in FIG. 9, the fixed reinforcing bar support bar (46) also employs a fixed length angle type steel as in the case of the elevating reinforcing bar support bar (40), and has a reinforcing bar receiving notch (47) on the upper surface thereof. Are desirably arranged in a row at a predetermined pitch (P2).

Numeral (48) is a unit control panel attached to and integrated with the back of the column main body (11) at a mid-height position. The unit control panel includes a lifting hook (3) as shown in FIG.
9) Ascending and descending relays (49) and (50) and electromagnetic switches (51) and (52), upper and lower limit detection switches (53) and (54), and a snap switch (5).
5) A lifting control circuit including a display lamp (56) is incorporated.

The limit switches (53) and (54) for detecting the upper and lower limits of the lifting hook (39) are shown in FIGS.
As can be seen from FIG. 3, they are attached to the upper end and the lower end of the column body (11), respectively, so that they can come into contact with the lifting base frame (37) of the lifting hook (39). The display lamp (56) is turned on by the manual ON operation of the snap switch (55) to indicate that the lifting hook (39) is in an operable state.

The working column (A) is a set facing each other, and several sets (A1-L), (A2-L), (A3
-L) (A1-R) (A2-R) (A3-R) (3 sets in total in the figure) are used in a left-right parallel state.
The ascending and descending reinforcing bar support bar (40) and the fixed reinforcing bar support bar (46) are locked in a horizontal state so as to bridge the pair of facing lifting hooks (39) and fixed hooks (44). It has become so.

In addition, several sets (A1
-L) (A2-L) (A3-L) (A1-R) (A2-
R) and (A3-R), as suggested from the overall layout of FIG. 12, several sets (A1-L) and (A2-L) forming the left column.
L) (A3-L) The unit control panels (48) are electrically connected to each other by a cable (57) of an appropriate length, while the right-row pairs (A1-R) (A2- R) (A
The unit control panels (48) of the 3-R) are also electrically connected to each other by cables (58) of an appropriate length, and several sets (A1-L) (A2-L) of both left and right rows thereof are provided. )
(A3-L), (A1-R), (A2-R), and (A3-R) are all electrically connected to the main control panel (61) via the metal outlets (59) and (60). There are.

As apparent from FIGS. 10 and 11, the main control circuit incorporated in the main control panel (61) is a push-button switch (62) for raising and lowering the lifting hook (39) remotely. ) (63), and when the lifting push button switch (62) is turned on, the lifting hooks (39) mounted on the working column (A) are set in several sets (A1-L). ) (A2-L) (A3-L) (A1-
R) (A2-R) (A3-R) rise simultaneously.

On the other hand, if the lowering push button switch (63) is turned on, the raising / lowering hook (39) will have several pairs (A1-L), (A2-L), and (A3-L) of the working columns (A).
(A1-R), (A2-R), and (A3-R) are also simultaneously lowered at once, and such an ascending and descending operation can be remotely controlled intensively by the main control panel (61). is there.

In any case, if the operating hand is released, several sets (A1-L), (A2-L), and (A3-L) of the work columns (A) are released.
L) (A1-R) (A2-R) (A3-R)
The elevator (39) stops as all hooks (39) are aligned at the same height. If there is a working column (A) in which the snap switch (55) is turned off, the column (A)
Only the lifting hook (39) does not move up and down, and it is possible to know that it is inoperable by turning off the display lamp (56).

FIG. 13 shows an operation circuit of the motor according to the lifting drive source (30), and FIG. 14 shows a power supply circuit. The power supply circuit includes an earth leakage breaker (64) and a no-use breaker (65). In addition, since the positive phase detection relay (66) is particularly incorporated, the lifting hook (39) does not operate in the event that the phase of the power supply is reversed. Can also be prevented.

When the erection work of the beam rebar is performed by using the working column (A) configured as described above, several sets (A1-L) (A2-L) of the working column (A) are used. (A3-
L) (A1-R), (A2-R), and (A3-R), as is apparent from FIG. 15, as a set of right and left hooks (39) and a pair of fixed hooks (44) facing each other. After being erected on the ground of the work site, the lifting rebar support bar (40) is extended over the facing lifting hook (39), and the fixed reinforcing bar support bar (46) is also extended over the facing fixing hook (44). In a horizontal position.

In this case, since the work columns (A) are independent of each other, several sets (A1-L) (A2-L)
(A3-L) (A1-R) (A2-R) (A3-R) adjacent front-to-back mutual spacing (L) and facing left-to-right mutual spacing (W) are determined according to the size of the target beam reinforcing bar. In addition to freely setting, the elevating rebar support bar (40) and the fixed rebar support bar (46) are also selected and used according to the length.

First, the lifting hook (39) of the working column (A) is divided into several sets (A1-L) (A2-L) (A
3-L), (A1-R), (A2-R) and (A3-R), all of which are stopped at the lowering position at a certain height, and the required number of star laps ( a) is laid as shown in FIGS.

That is, at the beginning of the operation, all of the lifting and lowering reinforcing bar support bars (40) are set to be adjusted to a fixed height position where the stirrup (a) can rest on. By turning on the lowering push button switch (63) in (61) and turning it off at the adjustment height position, several sets (A1-L) of the working columns (A) are obtained.
(A2-L) (A3-L) (A1-R) (A2-R)
(A3-R) can be achieved simultaneously.

Next, as shown in FIGS. 16 and 17, a required number of upper main bars (b) and lower main bars (c) are passed through the frame of the star wrap (a), and the upper main bars (b) are inserted into the frame. The lower main reinforcing bar (c) is locked on the lifting reinforcing bar support bar (40) and mounted on the fixed reinforcing bar supporting bar (46). At this time, if the angle type steel provided with the reinforcing bar receiving notches (41) and (47) is used as the both reinforcing bar support bars (40) and (46), the notches (41) and (4) are used.
In the state where the upper main bar (b) and the lower main bar (c) are received and locked with respect to 7), there is an advantage that the upper main bar (b) and the lower main bar (c) can be positioned and arranged easily and correctly. As the support bars (40) and (46), there is no problem even if a notched steel bar or the like is used instead of the notches (41) and (47).

Thereafter, the ascending push button switch (62) of the main control panel (61) is turned on, and several sets (A1-L), (A2-L), and (A3-L) of the working columns (A) are operated.
The lifting hook (39) in (A1-R), (A2-R) and (A3-R) is connected to the lower main bar (c) from the fixed reinforcing bar support bar (46) with the star wrap (a) as shown in FIGS. At the same time to the height position to be transferred to
The star wrap (a) and the lower main bar (c) are kept suspended from the upper main bar (b), and the adjacent front-rear space (S) of the star wrap (a) is evenly widened.

Then, the upper main reinforcing bar (b) and the lower main reinforcing bar (c) are joined together at a time with respect to the star wrap (a), and when the assembly as the beam reinforcing bar is completed, At least two lifting bars (40) are left, and the rest is the lifting hook (39) of the work column (A).
Then, the completed beam rebar is lifted and moved by a crane or the like together with the remaining elevating rebar support bar (40), and is collectively placed at a certain place in the work site.

The lifting hook (39) is raised by the lifting drive source (30), and the star wrap (a) and the upper main bar (b) and the lower main bar (c) inserted therethrough.
May be selected so that the binding work can be performed in a comfortable standing posture.

As is apparent from FIGS. 15, 17, and 19, the stand (67) is used in combination with the stopper stand (67) for receiving the upper main bar (b) and the lower main bar (c).
To several sets (A1-L) (A2-L) (A
3-L) (A1-R) (A2-R) (A3-R) If the partition is installed in a crossing state at the front end or the rear end, the leading end of the main reinforcement at the time of passing through the star wrap (a). The parts can be automatically aligned, which is extremely convenient.

In any case, when assembling the beam rebar for the next time, the work column (A) is kept in the installed state, and the lifting hook (39) is lowered to the constant height position at the beginning of the work. The above operation may be repeated in the same manner.
In the illustrated embodiment, the work of assembling the beam reinforcement has been described. However, the present invention can also be applied to the work of assembling hills of upper beams, and the number of working columns (A) used depends on the purpose. Needless to say, it can be freely increased or decreased according to the length of the beam reinforcing steel to be used.

Further, in the illustrated embodiment, the lifting hook (3)
The work drive (A) is equipped with the lifting drive source (30) of 9) as a motor, but a hydraulic or pneumatic cylinder in place of the motor is provided on the work support (A), and the support (A) is provided. ), The chain driven sprocket (22) is set up and down by a piston rod hanging in parallel with the chain. It is also conceivable that the other end of the detachment is fastened to the working column (A) of the fixing member, and the lifting hook (39) is raised and lowered by the cylinder.

[0055]

As described above, in the method of assembling a beam reinforcing bar according to the present invention, the lifting drive source (30) and the lifting hook (39) and the fixed hook (44) for the reinforcing bar supporting bar operated by the driving source (30) are provided. A working column (A) equipped with a pair of lifting hooks (39) and a pair of fixed hooks (44) are opposed to each other by several sets (A1-L), (A2-L) and (A3).
-L) (A1-R) (A2-R) (A3-R)
At the work site, left and right side-by-side

The raising and lowering hook (39) and the fixed hook (44) can be detachably connected to the left and right sides of the fixed hooks (44) and the fixed hooks (46) between the left and right sides of the fixed hooks. And each is locked in a horizontal horizontal state,

First, under the condition that the lifting hook (39) is lowered to a certain height position by the lifting driving source (30), a required number of star wraps (a) are mounted on the lifting reinforcing bar support bar (40). And the required number of upper main rebars (b) passed through the frame of the star wrap (a) is placed on the elevating rebar support bar (40), and is also passed through the frame of the star wrap (a). The required number of side main rebars (c) is locked on the fixed reinforcing bar support bar (46) in a mounted state, respectively.

Next, the lifting hook (39) is simultaneously moved by the lifting drive source (30) to a position where the lower main reinforcing bar (c) is transferred from the fixed reinforcing bar support bar (46) to the star wrap (a). Raise the star wrap (a)
And the lower main bar (c) is suspended from the upper main bar (b), and the upper main bar (b) and the lower main bar (c) are bound to the star wrap (a),

Lastly, both rebar supporting bars (40) (46)
Is removed from the lifting hook (39) and the fixed hook (44), eliminating the need for heavy labor such as lifting the rebar support bars at once by a worker's hand or simultaneously replacing the work columns. A large number of beam rebars can be assembled easily in a short time, and the workability and safety at the site are remarkably excellent.

That is, according to the assembling method of the present invention,
As a worker, the lifting rebar support bar (40) is locked in a horizontal state between the left and right sides of the lifting hook (39) and the fixed hook (44) is fixed between the left and right sides of the fixing hook (44). The bar (46) is also locked in a horizontal horizontal state, and a required number of star wraps (a) are laid on the elevating rebar supporting bar (40) stopped at a lowered position at a certain height.

Then, the required numbers of the upper main bars (b) and the lower main bars (c) are collectively passed into the frame of the star wrap (a) at a time, and the upper main bars (b) are lifted and lowered by the rebar supporting bar ( 40) While the lower main reinforcing bar (c) is also locked on the fixed reinforcing bar support bar (46) while the lower main reinforcing bar (c) is locked in the mounted state, the lower main reinforcing bar (c) is fixed to the fixed reinforcing bar. The lifting hook (39) is moved up all the way from the support bar (46) to the height position where it is to be transferred to the star wrap (a).

In this case, the star wrap (a) and the lower main muscle (c) hang down from the upper main muscle (b) in a suspended state. b) and the lower main bar (c) can be bundled together at a time, and the work can be performed in a comfortable standing posture, and the upper main bar (b) and the lower main bar (c) can be combined. In addition to the fact that the work can be passed all at once into the frame of the star wrap (a), the efficiency of the on-site work can be significantly increased.

In carrying out the above-mentioned assembling method, the method according to claim 2
If the stopper stand (67) described in (1) is used in combination with the stand, the upper main bar (b) and the lower main bar (c) can be received by themselves and aligned properly and neatly. There is no need to add any work, and there is an effect that the work of passing the main bars (b) and (c) through the star wrap (a) can be performed more and more lightly.

Further, if the construction according to the third aspect is adopted as the work column (A) used in the above-mentioned assembling method, the column body (11) has a vertically movable rebar supporting bar (40).
Lifting hook (39) for locking the fixed reinforcing bars (4)
6) In addition to the fixing hook (44) for locking, a forward / reverse rotation motor (30) for driving the lifting hook (39) is also provided. 39) It is possible to freely adjust the supporting height of the rebar according to (39).

Moreover, the reinforcing bar support bars (40) (4)
6) can be removed from the lifting hook (39) and the fixed hook (44), so that it can be used without any restrictions to changes in the size and length of the beam reinforcing bar, and can be used for general purposes. And it is significantly beneficial for labor saving.

[Brief description of the drawings]

FIG. 1 is a front view showing a working column for assembling a beam reinforcing bar according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a side view of the lifting hook corresponding to FIG.

FIG. 4 is an exploded perspective view showing the column main body.

FIG. 5 is an enlarged cross-sectional view of a partially cutaway along line 5-5 in FIG. 2;

FIG. 6 is an enlarged sectional view taken along line 6-6 in FIG. 2;

FIG. 7 is an enlarged sectional view taken along line 7-7 of FIG. 2;

FIG. 8 is a perspective view showing extracted elevation reinforcing bar support bars.

FIG. 9 is a perspective view showing a state in which the lifting / lowering reinforcing bar support bar and the fixed reinforcing bar support bar are locked to the lifting hook and the fixed hook.

FIG. 10 is an elevation control circuit diagram.

FIG. 11 is a partial detailed view of FIG. 10;

FIG. 12 is an overall electrical wiring diagram of several sets of working columns and a main control panel.

FIG. 13 is an operation circuit diagram of a motor (elevation drive source).

FIG. 14 is a power supply circuit diagram.

FIG. 15 is a perspective view showing a state in which the work columns are set up in parallel.

FIG. 16 is a front view showing a state in which the star wrap is rested on the elevating bar supporting bar and a state in which the upper main bar and the lower main bar are inserted.

FIG. 17 is a sectional view taken along line 17-17 of FIG. 16;

FIG. 18 is a front view showing a hung state of the star wrap.

FIG. 19 is a sectional view taken along line 19-19 of FIG. 18;

[Explanation of symbols]

 (11) ・ Main body (14) ・ Stable grounding board (15) ・ Outlet window (22) ・ Chain driven sprocket (25) ・ Chain driving sprocket (30) ・ Elevation drive source (35) ・ Lift chain (39) ・ Elevation Hook (40), Lifting bar support bar (44), Fixed hook (46), Fixed bar support bar (67), Stopper stand (A), Work column (A1-L), Work column (A2-L) Work support (A3-L), work support (A1-R), work support (A2-R), work support (A3-R), work support (a), star wrap (b), upper main bar (c), lower Lateral main bar

Claims (3)

(57) [Claims] A working column (A) equipped with a lifting drive source (30), a lifting hook (39) for a rebar supporting bar operated by the lifting drive source (30) and a fixed hook (44), and a lifting hook (39). Comrades and fixed hooks (44) Several sets of comrades facing each other (A1-L) (A2-L) (A3
-L) (A1-R) (A2-R) (A3-R)
At the work site, the hooks (39) and the fixed hooks (44) and the fixed hooks (44) are placed between the left and right facing hooks and the fixed hooks (44) between the left and right facing hooks. First, the lifting hook (39) is lowered to a fixed height position by the lifting driving source (30). Then, a required number of star wraps (a) are laid on the lifting rebar support bar (40), and the required number of upper main rebars (b) passed through the frame of the star wrap (a) is reduced. 40) The required number of lower main rebars (c) similarly passed through the frame of the star wrap (a) is locked on the fixed reinforcing bar support bar (46) in the mounted state, and then the lifting and lowering is performed. Ascending hook (39) A driving source (30)
As a result, the lower main bar (c) is simultaneously raised from the fixed reinforcing bar support bar (46) to the height at which the lower main bar (c) is transferred to the star wrap (a), and the star wrap (a) and the lower main bar (c) are moved upward. While keeping the main bar (b) suspended, the upper main bar (b) and the lower main bar (c) are bound to the star wrap (a). ) Is removed from the lifting hook (39) and the fixing hook (44), respectively. 2. A plurality of sets (A1-L), (A2-L), and (A3-L) of working columns (A) set up in a left-right parallel state.
For (A1-R), (A2-R) and (A3-R), the stopper stand (67) is set up in a crossing state at the front end or the rear end thereof, so that the stopper stand (67) is within the frame of the star wrap (a). 2. The method of assembling a beam reinforcing bar according to claim 1, wherein the leading ends of the upper main reinforcing bar (b) and the lower main reinforcing bar (c) are received and aligned. 3. A lead-out window (1) for raising and lowering a hook along a vertical direction.
5) a hollow pillar body (11) that is frame-integrated into a rectangular shape in plan view with an opening, a stable grounding board (14) that integrally projects from the lower end of the pillar body (11), and the pillar body A chain driven sprocket (22) and a chain drive sprocket (25) rotatably supported on the upper and lower ends in (11), respectively, and the chain driven sprocket (22) and the chain drive sprocket (25). A lift chain (35) wound between the upper and lower sides of the column, and a chain drive sprocket (2) to the lower end of the column body (11) to drive the lift chain (35) to rotate.
5) a forward / reverse rotation motor (30) attached to the transmission connection state, and a connection state derived from the lead-out window (15) of the support body (11). The lifting hook (39) provided, and a fixed hook (44) attached and integrated near the lower end of the column body (11) as a relationship state parallel to the lower side of the lifting hook (39), The upper main bar (b) is also used by the lifting hook (39) so as to be able to be detachably engaged from above with the above-mentioned fixed hook (44). A work column for assembling a beam rebar, characterized in that the lower main rebar (c) is each supported by a fixed rebar supporting bar (46).