JPH06126362A - Device for supporting reinforcing bar cage - Google Patents

Abstract

PURPOSE:To disperse a load applying on each receiving roller and to easily support even a large and heavy reinforcing bar cage by receiving a composed reinforcing bar cage with three numbers of receiving rollers. CONSTITUTION:Roller receiving arms 21 in before and behind, right and left are provided on a lifting frame 16 elevating and lowering with arms 14 in before and behind, and right and left. The before and behind shafts 23 of side part receiving rollers 22 are supported with respective arms 21. Both ends of a shaft 25 of a central receiving roller 24 positioning on a central upper part of the lifting frame 16 is linked to the upper part of a guide plate 26, and the axis 28 of the intermediate part of each arm 21 is respectively fit in the longitudinal hole 27 of the lower part of this each guide plate 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing bar cage supporting device for use in a reinforcing bar cage knitting machine used for concrete piles and fume pipes.

[0002]

2. Description of the Related Art In a conventional knitting machine for rebar cages, a plurality of supporting devices for supporting the rebar baskets by a pair of left and right receiving rollers are arranged at appropriate intervals, and the rebar cages that have been knitted It is supported by two points and moved while rotating.

[0003]

In the case of the supporting device as described above, there is a problem that when the rebar cage is large and heavy, the load applied to the receiving roller becomes excessive and the rebar cage cannot rotate and move smoothly. It was

In view of the above-mentioned problems of the conventional supporting device, an object of the present invention is to support the reinforcing bar cage by three receiving rollers at the center and both sides thereof to smoothly rotate and move the reinforcing bar cage. The purpose is to provide.

[0005]

In order to solve the above-mentioned problems, a support device for a rebar cage according to the present invention comprises an elevating frame which is moved up and down by an appropriate elevating means, and a lower end of the elevating frame which oscillates near the front and rear sides of the elevating frame. A pair of roller receiving arms movably attached to each other in a cross shape, a pair of left and right side receiving rollers rotatably attached to the upper ends thereof, and a reinforcing bar supported between the side receiving rollers between the side receiving rollers. A center receiving roller that supports the central portion of the basket is provided, and interlocking means that interlocks the central receiving roller and the side receiving roller so as to contact the lower center of the reinforcing bar basket and both sides thereof at any position This is the configuration provided.

[0006]

In the apparatus of the present invention having the above-described structure, the knitted reinforcing bar cage is supported by the three receiving rollers of the two side receiving rollers and the central receiving roller of each supporting device. Also, when the diameter of the rebar cage to be knitted changes, if each receiving roller is moved up and down according to it, the center receiving roller and both side receiving rollers move to a predetermined height by the interlocking means and become the diameter of the reinforcing bar basket. It becomes a suitable position.

Therefore, even if the diameter of the rebar cage to be knitted is changed, each receiving roller can always stably support the rebar cage and move it smoothly.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 1 and 2, reference numeral 1 is a frame, 2 is a vertical line distribution device provided on a machine base 3 behind the frame, and a plurality of vertical line guide tubes 4 are arranged in a cylindrical shape. And
A plurality of vertical stripes 6 extruded from the rear vertical stripe insertion device 5
Are inserted into the guide tubes 4, arranged in a cylindrical shape, and extruded in front of each guide tube 4.

Reference numeral 7 is a spiral muscle feeding device provided on the front side of the distributor 2, and the spiral muscle 8 fed from this device is straightened by a straightening device 9 so as to form a cylindrical shape and rotate. It is wound on the outside of the vertical bar 6, and the intersection is welded by the welding device 10 to form a rebar cage B which is pulled out by the towing vehicle 11 in the arrow direction.

Reference numeral A denotes a reinforcing bar cage supporting device arranged at a constant interval in the frame 1, the details of which are shown in FIGS.
It will be described based on.

In these drawings, lower ends are fixed to front and rear rotary shafts 13, respectively, which are rotatably supported by a frame 1 at both ends and an intermediate portion, and a pair of left and right pairs are freely undulated by rotation of the rotary shaft 13. Each arm 14 comprises an arm 14 and an elevating frame 16 rotatably connected to the upper end of each arm 14 by a shaft 15 on both sides so that the front and rear rotating shafts 13 and 15 form a parallelogram. Due to the ups and downs, the elevating frame 16 moves up and down while maintaining the horizontal level.

A lever 17 is fixed to the center of the front rotary shaft 13 and a piston rod 19 of an air cylinder 18 whose rear end is rotatably connected to the rear rotary shaft 13 is connected to the lever 17 by a shaft. Then, each arm 14 is raised and lowered by the forward and backward movement of the rod 19, and the elevating frame 16 is moved up and down.

A pair of left and right rotating shafts 20 are mounted in parallel on both sides of the elevating frame 16. As shown in FIG. 5, one end of a roller receiving arm 21 bent in a shallow V shape is fixed to the front and rear ends of the both shafts 20, but the left and right arms 21 should be slightly crossed with each other in the front and rear directions. Thus, the upper end projects to the opposite side of the mating arm 21.

At the upper ends of the front and rear arms 21,
The front and rear ends of a shaft 23 to which the side receiving roller 22 is rotatably attached are fixed.

Numeral 24 is located between the both side receiving rollers 22 and is supported by the both receiving rollers 22.
It is a central receiving roller that supports the lower central part of the. A shaft 25 to which the receiving roller 24 is rotatably attached projects long in front of and behind the roller 24, and its end is lifted up and down by a lifting frame 16
Each roller receiving arm 21 through the recessed portion in the center of the front and rear walls
The shaft 25 is rotatably connected to the upper ends of the front and rear guide plates 26 which are protruded upward and arranged in front of and behind the both arms 21, respectively.

The vertically elongated holes 2 in the lower part of the front and rear guide plates 26.
A shaft 28 provided at the bent portion of the front and rear roller receiving arms 21 is fitted into the shaft 7 so as to be rotatable and vertically movable.

Support plates 29 are provided on the lower front and rear sides within the elevating frame 16, and the air cylinders 30 are mounted on the support plates 29.
Is fixed, and a bearing 32 is fixed to a piston rod 31 protruding above the cylinder 30, and the shaft 32 is supported by the bearing 32.

In the embodiment, the reinforcing bar cage supporting device A having the above-mentioned structure is arranged at five places to support the reinforcing bar cage B which has been knitted.

That is, the rebar cage B welded at the intersection of the vertical bar 6 and the spiral bar 8 by the welding device 10 moves onto the rebar basket supporting device A while rotating.

At this time, the respective air cylinders 18 and 30 of the respective reinforcing bar cage supporting devices A work to bring the elevating frame 16 at the position indicated by the chain line in FIG. 3 to a predetermined height, and the central receiving roller 24 causes the reinforcing bar cage 24 to move. Touch the bottom of B.

Further, the vertically elongated hole 27 of the guide plate 26 which has been raised.
The lower end of the roller pulls up the shaft 28 of each roller receiving arm 21 and rotates the arm 21 upward to bring it into contact with the lower portion of the rebar cage B.

The operation of the air cylinders 18 and 30 is as follows.
The fact that the tip of the rebar cage B approaches the first supporting device A is automatically detected by a sensor, or the operator manually operates the switch.

[0024]

As described above, the present invention is supported by the receiving rollers at the center and both sides of the rebar cage which is knitted in the cage shape and advanced. Therefore, since the load is distributed to the three receiving rollers, it can be safely supported even in the case of a large-diameter and heavy rebar basket.

Further, since the center receiving roller and the side receiving roller are interlocked so as to contact the center of the reinforcing bar basket and both sides thereof at any of the upper and lower positions, the size of the reinforcing bar basket is changed. Also has an effect that it can be easily dealt with.

[Brief description of drawings]

FIG. 1 is a plan view of a rebar cage manufacturing machine using an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a vertical sectional side view showing an enlarged main part.

FIG. 4 is a plan view of the above.

5 is a sectional view taken along line VV of FIG.

[Explanation of symbols]

 1 frame 13 rotating shaft 14 arm 15 shaft 16 lifting frame 18 air cylinder 20 rotating shaft 21 roller receiving arm 22 side receiving roller 23 axis 24 central receiving roller 25 axis 26 guide plate 27 vertical slot 28 axis 30 air cylinder A rebar cage support Device B Rebar cage

Claims (1)

[Claims] 1. A support device in which a spiral bar is wound around the outside of a plurality of longitudinal bars arranged in a cylindrical shape, the intersections thereof are welded and knitted in a cage shape, and the knitted rebar cages are arranged at appropriate intervals in a frame. In a knitting machine of a rebar cage that is supported and moved in the axial direction, each of the supporting devices includes an elevating frame that is moved up and down by an appropriate elevating means, and a lower end of the elevating frame is swingable near both front and rear sides of the elevating frame. A pair of roller receiving arms attached in a cross shape, a pair of left and right side receiving rollers rotatably attached to the upper end of the pair, and a center of a rebar cage between the two side receiving rollers and supported by the both side receiving rollers. A center receiving roller for supporting the portion is provided, and interlocking means is provided for interlocking the center receiving roller and the side receiving roller so as to contact the lower center of the rebar cage and both sides thereof at any of the upper and lower positions. Reinforcing bar cage support device.