JPH1162241A - Method and device for assembling reinforcing bars - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easyly join and fix an assembly of reinforcing steel bars to existing reinforcing bars by raising the heavy reinforcing bars and positioning the joint parts. SOLUTION: The ends of reinforcing bars T provisionally installed horizontally are grasped by a clamp 2, and a removable ring 5 is fitted to the bar T attached to a suspension wire 4 connected with the clamp 2 through a balancer 3 having a function to expand and contract the length while the balance is held with the weight of the bars T to be hung up. The wire 4 is lifted so that the bars T are raised, and they T are moved horizontally and the joint part is located, followed by a level adjustment through the vertical movement of the bars T by the balancer 3, and after the bars T are joined fast, a suspension jig 1 is hung down to the lower part, and the ring 5 is set off and the clamp 2 is disengaged, and then the operation proceeds to the next assembling stage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for assembling a reinforcing bar for hanging a heavy-weight reinforcing bar such as a large-diameter / different-diameter thread bar on a reinforcing bar joint and fixing it with screws and nuts. .

[0002]

2. Description of the Related Art A single reinforcing bar, particularly a heavy-weight reinforcing bar such as a large-diameter / different-diameter thread, is suspended from a horizontally laid reinforcing-bar bundle, and is lifted to a reinforcing-bar joint, and screws, nuts, etc. Conventionally, in order to join and fix by using a crane or a hoist.

[0003] However, the positioning of the joint, particularly the level adjustment, is performed only by the operation of the crane or the hoist.
It required considerable skill, and it was necessary to remove the sling of the reinforcing bar at a high place after joining, which was troublesome.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a method for producing a single reinforcing bar from a bundle of reinforcing bars temporarily placed in a horizontal position, particularly a heavy-weight bar such as a large-diameter / different-diameter thread. An object of the present invention is to provide a method and an apparatus which can easily perform positioning of a joint portion, particularly, level adjustment when assembling a reinforcing bar, by suspending a reinforcing bar at a reinforcing bar joint portion and fixing the reinforcing bar with screws and nuts. It is assumed that.

[0005]

According to the present invention, an end of a horizontally provided reinforcing bar is gripped by a clamp, and the weight of the reinforcing bar to be lifted is balanced with a balancer having a function of extending and contracting a predetermined length. A detachable ring attached to a suspension wire connected to the clamp is attached to a reinforcing bar, the lifting wire is lifted to raise a reinforcing bar, the reinforcing bar is horizontally moved to position a joint, and the reinforcing bar is vertically moved by the balancer. After the level is adjusted by motion, the rebar is joined and fixed, and after the rebar is joined and fixed, the hanging jig is hung to the lower part, the detachable ring is removed, the clamp is released, and the process proceeds to the next rebar assembly.

[0006] A crane or a hoist is used to lift the suspension wire of the suspension jig to erect a reinforcing bar.

[0007] In order to raise the rebar by lifting the suspension wire of the suspension jig, the end of the rebar is gripped by a clamp and the middle of the rebar is supported by a detachable ring. I do.

[0008] The rebar is horizontally moved by the swiveling motion of the crane or hoist to position the joint, and since the length of the balancer is fixed, the weight is constant and the balancer is manually expanded and contracted to join. Adjust the level of the unit.

[0009]

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

In FIGS. 1 to 3, a hanging jig for assembling a reinforcing bar generally denoted by 1 is a reinforcing bar that is temporarily provided horizontally, for example, a large-diameter / different-diameter thread (for example, length = 5500 mm, weight = A clamp 2 gripping an end of 60 kg), a balancer 3 connected to the clamp 2, a suspension wire 4 connected to the balancer 3, and detachably attached to a reinforcing bar attached to the suspension wire 4. And a detachable ring 5 to be used. A hook 6 for lifting the hanging jig 1 is attached to a tip of the hanging wire 4.

[0011] As shown in FIG.
, An operating lever 11 pivotally supported by the frame 10, and a meshing body 13 pushed by the operating lever 11 in the direction of the arrow through a link 12 and meshing with the rebar T. And a lock release lever 14 for releasing the lock of the engagement body 13. According to the clamp 1, the rebar T can be gripped with one touch by operating the operation lever 11.

The balancer 3 has a function of expanding and contracting a predetermined length in balance with the weight of the rebar, and employs a spring type or an air type. The balancer 3 has a fixed weight (for example, for 60 kg) because the length of the reinforcing bar T is fixed, and the expansion and contraction length may be such that the level of the joint can be manually adjusted (for example, 300 mm).

The hanging wire 4 may be a bar, a rope or the like, and these are collectively referred to as a hanging wire.

The attachment / detachment ring 5 may be made of eggplant or the like and can be attached and detached by hand.

In order to assemble the reinforcing bar by the above-mentioned hanging jig 1, the end of one reinforcing bar T is held by the clamp 2 from the horizontally provided reinforcing bar bundle, and the weight of the reinforcing bar to be lifted is balanced. A detachable ring 5 attached to a suspension wire 4 connected to the clamp 2 via a balancer 3 having a function of extending and contracting by a predetermined length is attached to a reinforcing bar T.

The hook attached to the tip of the hoisting wire of the mini crane K is hooked on the hook 6 of the suspending wire 4 and lifted to raise the reinforcing bar T.

The position of the joint of the reinforcing bar T is determined by the turning, undulating and expanding / contracting operations of the crane K, and the level is adjusted by the vertical movement of the reinforcing bar T by the balancer 3 so as to adjust the existing reinforcing bar T-1.
And fixed with screws and nuts.

After the reinforcing bars are joined and fixed, the hanging jig 1 is suspended to the lower portion, the detachable ring 5 is removed, the clamp 2 is released, and the process proceeds to the next reinforcing bar assembly.

FIGS. 4 to 6 show a hoisting device dedicated to hoisting the hoisting jig 1 for rebar assembly.
0 is provided with a wheel 22 on a base 21, a post 23 is erected on the base 21, and a first arm 24 is provided on the top of the post 23, which is horizontally free-rotating, and a tip of the first arm 24 is further provided. A second arm 25 is provided which is free to rotate horizontally, and a hoist 26 is attached to the second arm 25. 27
Is a hand switch for operating the hoist 26.

The joints of the reinforcing bars T are positioned by the horizontal free rotation of the arms 24 and 25 and the operation of raising and lowering the winch 26, and the vertical movement of the reinforcing bars T by the balancer 3 as in the previous embodiment. The level is adjusted, and the existing reinforcing bar T-1 is joined and fixed with screws and nuts.

[Brief description of the drawings]

FIG. 1 is a side view showing a rebar assembling method according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a relationship among a reinforcing bar, a clamp, a balancer, a suspension wire, and a detachable ring.

FIG. 3 is a detailed perspective view of a clamp.

FIG. 4 is a side view showing a rebar assembling method according to a second embodiment of the present invention.

FIG. 5 is a plan view showing the turning state of the arm.

FIG. 6 is a side view showing the relationship between the lifting jig and the lifting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Hanging jig 2 ... Clamp 3 ... Balancer 4 ... Hanging wire 5 ... Detachable ring 6 ... Hook 10 ... Frame body which penetrates a rebar 11 ... Operation lever DESCRIPTION OF SYMBOLS 12 ... Link 13 ... Meshing body 14 ... Lock release lever 20 ... Lifting device 21 ... Base 22 ... Wheel 23 ... Post 24 ... 1st arm 25. ..Second arm 26 ... Hoist 27 ... Hand switch

Claims (5)

[Claims] 1. An end of a horizontally temporarily reinforced reinforcing bar is gripped by a clamp and attached to a suspending wire connected to the clamp via a balancer having a function of balancing the weight of the reinforcing bar to be lifted and extending and contracting a predetermined length. Attach the detachable ring to the reinforcing bar, lift the suspension wire to raise the reinforcing bar, move the reinforcing bar horizontally to position the joint, adjust the level by the vertical movement of the reinforcing bar by the balancer, and join the reinforcing bar. A method for assembling a reinforcing bar, comprising: fixing the reinforcing bar, fixing the reinforcing bar, suspending a hanging jig to a lower portion, removing the detachable ring, releasing the clamp, and proceeding to the next reinforcing bar assembly. 2. The rebar assembling method according to claim 1, wherein the lifting jig is lifted and the rebar is raised by a crane. 3. The rebar assembling method according to claim 1, wherein the lifting jig is lifted and the rebar is raised by providing a horizontal turning arm on the top of the post and using a hoist attached to the arm. 4. A clamp for gripping an end of a temporarily provided reinforcing bar, a balancer connected to the clamp and having a function of extending and contracting a predetermined length while balancing the weight of a reinforcing bar to be lifted, and a balancer connected to the balancer. A hanging jig for assembling a reinforcing bar, comprising: a hanging wire; and a detachable ring detachably attached to a reinforcing bar attached to the hanging wire. 5. The base according to claim 4, wherein a wheel is provided on the base, a post is erected on the base, a horizontal swing arm is provided on the top of the post, and a hoist is attached to the arm. A hoisting jig hoisting apparatus for assembling the rebar according to the above.