JPH0350687B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for assembling reinforcing bars, and more particularly to a method for assembling reinforcing bars for concrete structures, particularly for setting reinforcing bars for concrete plates at desired intervals within formwork. be.

Conventionally, reinforcing bars 1 used for lightweight concrete plates such as aerated concrete are made by combining horizontal bars 2 and vertical bars 3 to form a planar assembly with spacers 4 in between, as shown in FIG. 1, for example. They are sterically bonded. To set such reinforcing bars 1 at a predetermined position within a concrete formwork, the reinforcing bars 1 are engaged with a setting jig and suspended, moved to the predetermined position, and then engaged with the setting jig. However, in the past, most of these tasks relied on human labor, which took a long time and was not favorable from a safety standpoint. Since the process is complex, it requires a large amount of equipment costs and has the disadvantage of causing many troubles during operation.

An object of the present invention is to provide a method for assembling reinforcing bars that eliminates the drawbacks of the reinforcing bar assembling methods described above, is relatively simple, can be easily automated, and can be reliably set at a predetermined assembly location. It's about doing.

In the present invention, a setting rod for arranging reinforcing bars at a predetermined location is lowered to a predetermined position of a spacer fixed between the reinforcing bars, and then the setting bar is moved horizontally to place a notch in the spacer. and the hook-shaped part of the set rod is engaged with the notch.

Typically, in the present invention, a reinforcing bar arrangement table that holds reinforcing bars at regular intervals in advance is moved to a desired position and positioned, and then a reinforcing bar set jig supplied in the required amount from a setting jig stocking station is placed. Lower the assembly arm that grips the side of the tool to the reinforcing bar position, insert the setting jig from the side into a spacer that has a notch in the lateral (horizontal) direction and that is attached to the reinforcing bar. This is to engage the spacer.

Hereinafter, the present invention will be explained in more detail with reference to the drawings.

FIG. 2 is a perspective view showing an example of a reinforcing bar setting jig used in the present invention. This jig consists of support frame 5
, a set rod 6 supported by the support frame 5 and arranged vertically at a predetermined interval, a hook-shaped portion 7 at the lower end of the set rod 6, and a reinforcing bar spacer 4 as shown in FIG. It has a set rod rotating means 9 for inserting into the hole 8 and further rotating it by 90 degrees to engage the spacer 4. Note that the setting jig as used in the present invention refers to the setting rod 6 that engages with the spacer 4 that keeps the reinforcing bars at a predetermined interval as described above and suspends the reinforcing bar 1, and the setting bar that keeps the setting bar at a predetermined interval. This refers to an integrated support frame 5 for arranging and fixing.

As shown in FIG. 5, the setting jig 10 is supplied directly below the assembly arm 20 (indicated by a broken line) from a setting jig stocking area (not shown) by a setting jig supplying device 11. That is, this setting jig supply device 11 includes a cart 12 that slides in the horizontal direction, and a cylinder device 13 whose one end is fixed on the cart.
The setting jig 10 is placed on the trolley 12 and pushed out in the direction of arrow B by the cylinder device 13, so that it is placed directly below the assembly arm 20.

As shown in FIG. 6, the assembly arm 20 includes a pair of clamps 15 supported on the lower side of the frame 14.
, a cylinder device 17 connected to its upper end via a rod 16, and a drive device 18 for rotating means 9 (FIG. 2) of the setting rod 6 of the setting jig held by the clamp 15. The upper side of the frame body 14 is connected to a lifting device 19 (hydraulic cylinder device) fixed to a frame or the like. Pin 1 on frame 14
As shown in FIG. 7, the clamp 15 supported via the groove 23A is
The top can be slid back and forth (in the direction of arrow A).

The setting jig 10 is lowered to a predetermined position of the reinforcing bars on the reinforcing bar arrangement cart 21 below by the operation of the cylinder device 19.
is divided into a plurality of sections by a guide plate 22 having an acute angle at the tip, and has a rack 33 on its lower side, and this rack 33 has a moving positioning device (pinion gear) 24, slides on the rail 25, and can be stopped at a predetermined position. The set bar rotating means 18 (FIG. 6) has a cylinder device 26, as shown in detail in FIGS. 8 and 9, and the cylinder device 26 is connected to a rotating bar 27 via a head 26A. When the rod 28 is fixed to the bar 27, it is rotated around the shaft 27A.
The setting rod 6 is rotated through 90 degrees via a pin 29.

As shown in FIG. 3 A and B, the setting rod 6 has a shape in which a circular cross-sectional base material is cut in the middle and at the lower end so that the opposite sides have a constant thickness. The set rod can be fitted to the The spacer 4 has one side thereof,
That is, it has a tapered notch 30 on the side into which the setting rod 4 is inserted, and has a hole 8 in the center thereof large enough to allow the setting rod to rotate, and the tapered portion 30 and the hole 8 is thicker than the thickness between the cutting surfaces of the set rod and connected by a groove having a width slightly (1 to 2 m/m) narrower than the diameter of the set rod base material. Each of the cylinders and each driving device is actuated by a signal such as a limit switch combined with an operation command or a control device consisting of an arithmetic operation and a memory circuit.

Next, the operation and effects of the above device will be explained in more detail.

First, in FIG. 5, a setting jig 10 with setting rods 6 mounted in advance at positions corresponding to the type and number of reinforcing bars is located at a setting jig stock station (not shown).
It is placed on the carriage 12 of the setting jig supply device 11, and is pushed out in the direction of the assembly arm 20 (arrow B) by the operation of the cylinder device 13. When the setting jig 10 is pushed out to the position shown by the chain line in FIG. 5, the cylinder device 17 of the assembly arm 20 is actuated to grip the side surface of the setting jig 10 with the clamp 15, as shown in FIG. Next, assembly arm 2
It is raised by the operation of the lifting device 19 on the upper part of 0 and stopped at a predetermined position. Here, the setting jig supply device 11 from which the setting jig 10 is removed (FIG. 5)
operates the cylinder device 13 in the opposite direction and is returned to its original position.

Before or during gripping and lifting/lowering of the setting jig 10, a guide plate 22 is placed on the reinforcing bar arrangement cart 21 as shown in FIGS. 6 and 7.
The reinforcing bars 1 are arranged and maintained at regular intervals through the reinforcement bars 1. The cart 21 with reinforcing bars arranged in this manner is driven by meshing a pinion gear (movement positioning device) 24 provided at the entrance of the assembly device with a rack 33 of the cart 21, and receives an operation signal from a control device (not shown). As a result, the trolley 21 moves to the reference position and stops. This stopped state is shown in FIGS. 6 and 7. Simultaneously with the stop of the truck 21, the cylinder 19 is operated as described above to lower the setting jig 10 to the engagement position with the reinforcing bar spacer 4 (FIG. 3). The state at this time is number 10.
As shown in Figures A and B, the side bottom 3 of the setting jig 10
1 to 2 mm between 1 and the set jig receiving part 32 of the trolley.
Maintaining a gap of about
3, move the clamp device 15 in the front and back direction (arrow A)
It is possible to move to. In the lowered position of the arm 20, the setting rod 6 and the spacer 4 are arranged at a constant distance from each other, as shown in FIG. are in a parallel state.

When the lowering operation of the setting jig 10 is completed,
Next, the clamp 15 is moved in the direction of arrow A by the operation of the cylinder 23 (FIG. 7), and the setting rod 6 is positioned at the center of the spacer hole 8 using the tapered portion 30 of the spacer 4 as a guide, as shown in FIG. Insert the setting rod 6 into the spacer 4 until the center position of the setting rod 6 coincides with the center position of the setting rod 6. After the insertion operation is completed, the setting rod rotating cylinder 2 shown in FIG.
6 and pushes out the rotating head 26A in the direction of arrow C, the rotating bar 27 provided on the setting jig 10 is rotated 90 degrees, and the rod connected to the rotating bar 27 is rotated. The setting rod 6 is rotated 90 degrees via the setting rod 28, and the setting rod 6 and the spacer 4 are engaged and integrated.

When the engagement operation between the setting rod 6 and the spacer 4 is completed, the clamp 15 is released from the clamp 15 by the operation of the cylinder 17 of the assembly arm 20, and the setting jig 10 is moved onto the setting jig receiving portion 32 of the trolley 21. It will be posted. After the above transfer is completed, the assembly arm 20
is raised by the operation of the cylinder 19, stops at a predetermined position, and waits until it receives the setting jig 10 again from the setting jig supply device 11, as shown in FIG. Also, at the same time as the assembly arm 20 rises and stops, the pinion gear 24
In response to a command from the control device, the trolley 21 is moved by a predetermined pitch and stopped at the next spacer position. When the truck 21 is stopped at the fixed position and the setting jig 10 is completely supplied to the setting jig supplying device 11, the operation for engaging the series of spacers and the setting rod as described above is restarted. When the engagement operation is completed for the setting jig mounted on each truck, the truck 21 is carried out, a new truck is brought in, and the above operation is repeated.

In the above embodiment, the setting jig 10 is held by gripping the side surface of the setting jig 10 by operating the cylinder device 17, but this may also be done by using an attraction means such as a magnet. In addition to the cylinder 19 used in this embodiment, the assembly arm 20 may be moved up and down by a drive device including a combination of a forward/reverse motor, a rack and a pinion, or a chain. In addition to the combination of the rack 33 at the bottom of the cart and the pinio gear 24 as in this embodiment, the positioning of the cart 21 is provided with a function of fixing the cart 21 to the tip of a screw shaft rotated by a drive device. The assembly arm 21 may be moved back and forth at a low pitch, or the carriage 21 may be fixed and the assembly arm 20 itself may be moved.

Furthermore, the shape of the notch of the spacer and the hook-shaped part of the setting rod that engages with the spacer allows the setting rod to be locked by rotating it 90 degrees, as shown in FIGS. 3 and 4. Although the mechanism is simple, the horizontal protrusion of the hooked part 7 protrudes outward beyond the width of the notch of the spacer 4 above it due to rotation, and when the set bar is suspended, the set bar It is fine as long as it can reliably hold the
The shape and the rotation angle for locking the set rod are not particularly limited. In addition, as long as the object of the present invention is achieved, the elements of the above embodiments may be converted into equivalent means, or various modifications may be made thereto.

According to the present invention, when the set rod is engaged with the spacer, the spacer itself has a guiding function by providing a notch on one side of the spacer, and preferably making the notch tapered. There is no need to fit the setting rod into the spacer hole from the vertical direction, or to install a special guide device in the device, or to change the design of the guide device depending on the width of the reinforcing bars. Since the rod is inserted from the lateral direction of the spacer, the insertion operation is easy and the setting rod can be reliably engaged with the reinforcing bar. In addition, since the setting jig is assembled with reinforcing bars one frame at a time, the equipment can be kept small, and even if there is a design change such as the setting jig installation interval, it is only necessary to change the amount of movement of the trolley. It has a wide range, is easy to operate, and can more reliably assemble reinforcing bars.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional reinforcing bar (assembled body), FIG. 2 is a perspective view showing an embodiment of a setting jig used in the present invention, and FIG. An explanatory diagram showing a state in which a set rod is engaged with a hole in a reinforcing bar spacer, FIGS. 4A and 4B are plan sectional views of the upper and lower spacer portions in the state shown in FIG. Figures 6 and 7, which illustrate the state in which the setting jig is supplied from the setting jig supply device to the assembly arm in the present invention, show the setting jig being gripped by the assembly arm in the present invention, and the reinforcing bar arrangement trolley FIG. 8 is a plan view of the setting rod rotating device used in the present invention;
FIG. 9 is a front view thereof, FIG. 10A is a front view showing a state in which the setting jig is engaged with the reinforcing bars of the reinforcing bar arrangement cart, and FIG. 10 B is a side view thereof. The explanation of the symbols is as follows. DESCRIPTION OF SYMBOLS 1... Reinforcement bar (assembly body), 4... Spacer, 6... Setting rod, 7... Hook-shaped part, 8... Hole part, 9... Setting rod rotation means, 10... Setting jig, 11... Setting jig supply device, 15... Clamp, 17...
Cylinder device, 19... Lifting device, 20... Assembly arm, 21... Reinforcement bar arrangement trolley.

Claims (1)

[Scope of Claims] 1. A setting rod for arranging reinforcing bars at a predetermined location is lowered to a predetermined position of the spacer fixed between the reinforcing bars, and then the setting bar is moved horizontally to place the spacer. A method for assembling a reinforcing bar, comprising: inserting the reinforcing bar into a notch, and engaging a hook-shaped part of the set rod with the notch. 2. In claim 1, after inserting the hook-shaped portion of the setting rod into the notch, the setting rod is rotated so that the protruding portion of the hook-shaped portion is moved outward beyond the width of the notch. A method for assembling reinforcing bars, characterized in that the reinforcing bars are made to protrude and engage with each other. 3. In claim 1 or 2, the reinforcing bars are arranged on a plurality of rows of carts, and are moved at predetermined intervals to engage the setting rods held by the setting jig with the reinforcing bar spacers. A reinforcing bar assembly method characterized by: