JPS6355269A - Temporary constructed holder of reinforcing bar joint - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a temporary retainer for a reinforcing joint.

(Prior Art) The present applicant has proposed a reinforcing bar joint shown in FIG. This is done by hardening the sleeves S and Sa that are joints at the ends of the reinforcing bars R and Ra to be connected, and attaching the pole L-B that has been screwed into one sleeve S in advance to this bolt with the double nut N. is turned to feed one end of the pole 1 into the other sleeve 3a as shown by the chain line, and when a predetermined amount has been inserted, the feeding is stopped F to join both reinforcing bars. T and Ta are tapered parts formed on the outer periphery of each sleeve S and Sa. When using such a joint to, for example, erect an assembled reinforcing column, the upper part of the column must be lifted with a crane. Connect all the reinforcing bar joints as they are, and then move on to connecting the next column.

(Problems to be Solved by the Invention) Since the joint work is performed while suspended by a crane, the lifting work of the crane is restricted to the joint work, and it is not easy to create a gap between the opposing joints.

An object of the present invention is to make crane work and connection work independent of each other, and another object is to easily and reliably provide joint spacing.

(Means for Solving the Problems) The present invention consists of a cylindrical reinforcing bar holding part 1 and a joint spacing holding part 2, and both holding parts are connected to each other integrally or separably. be. Both holding parts 1.2 are provided with dividing surfaces 3 in the axial direction, so that they can be divided into a plurality of parts. Each holding part 1
, 2 are formed with receiving portions 11.25 that abut on the tapered portions T and Ta of the joints S and Sa. Each holding part 2 is provided with a working opening 26 through which the nut N can be operated from the outside.

(Function) The reinforcing bar holding part 1 is connected to the receiving part 11 at the tapered part T of one joint S.
At the same time, the tapered part Ha of the other joint Sa is temporarily supported by the receiving part 25 of the joint spacing holding section 2, and at the same time, the joint spacing is maintained.

(Example) The present invention will be explained in detail below.

The temporary holder consists of a cylindrical reinforcing bar holder 1 and a joint spacing holder 2 that are concentrically connected, and has two parts v in the vertical direction.
It has a J-plane 3 and can be divided into left and right halves.

The reinforcing bar holding part 1 holds a sleeve S which is passed through one joint at its inner periphery, and has a receiving part 1 with an internal shape corresponding to the shape of the tapered part T of this sleeve on its upper inner periphery. It is latched onto the sleeve S at this receiving part. A threaded portion 12 is formed on the outer periphery of the reinforcing bar holding portion 1, and a stopper portion 13 for preventing handling height is provided at the lower end edge.

The joint spacing holding part 2 has a female thread part 21 formed on the inner circumference of the lower end.
It is screwed to the threaded part 12 of the reinforcing bar holding part 1. One (right side in Figure 3) of the spacer 2 has a hinge 23 on the dividing surface side.
The other one has a fixing part 24 for fixing the divided piece.

This fixing part consists of a bracket 24a protruding from one piece, and a hole l-24 attached to this bracket i-2 in a freely tiltable manner.
b, a U-shaped presser piece 24c protruding from the other piece, and a lug l-24d that connects the presser piece and the bolt. A receiving portion 25 having an internal shape corresponding to the shape of the tapered portion Ta of the sleeve 3a, which is the other joint, is formed at the upper inner peripheral portion of the spacer 2. This receiving portion can temporarily hold the other sleeve 3a in an upright state. Furthermore, a working opening 26 is formed in the spacer 2 . This opening is for operating the nut N located inside from the outside. The openings 26 may be provided opposite to both pieces of the holding part 2 as shown in the second figure, but they may be provided on either one side. In addition, the reinforcing bar Ra is placed at the upper end of the spacing holding part 2.
It is provided in an upright state with a hook 27 or pin 28 as the center of rotation for preventing falling. The hook 27 is expandable outward.

Next, how to use it will be explained. Adjust in advance by turning either one of the holding parts 1.2 so that the distance between the receiving parts 11.degree. 25 matches the spacing between the sleeves S and Sa. Therefore, first, the sleeve S of one of the joints, to which the bolt B and the lug 1-N have already been attached, is held between the reinforcing bar holding part 1 at the lower part of the holder, and this state is held by the fixing part 24 of the spacing holding part 2.
Fix it with.

After that, if the upper reinforcing bar cage is hung and the reinforcing bar sleeve Sa is inserted through the upper end opening of the spacing section 2, the tapered section'
la is in contact with the receiving part 25, and the reinforcing bar Ra is inserted through the sleeve.
is temporarily held in the holding part 2, and the sleeve S set at the same time
, Sa are also maintained. After temporarily tightening, turn the double nut N through the opening 26 to tighten the bolt B into the sleeve 3a.
After feeding the sleeve into the sleeve and feeding it out at a predetermined rapid rate, firmly tighten each nut to the tip of the sleeve. As a result, the reinforcing bar R
a is connected to reinforcing bar R.

If necessary, after temporary fixing and before joining the reinforcing bars, finely adjust the spacing between the sleeves S and Sa by turning the holding part 1 or 2.

The holding parts 1 and 2 may be integrally connected, but if they are separably connected via a threaded part, the spacing between the sleeves can be adjusted, so the joint spacing can be adjusted with one type of holder. Can be used to connect different reinforcing bars. The number of divisions of the holder is not limited to two.

(Effects of the Invention) According to the present invention, since reinforcing bars can be temporarily installed, crane work and reinforcing bar connection work can be separated, and therefore the connection work can proceed independently of crane work, making the connection work more efficient. can. Since the spacing between the joints can be maintained automatically at the same time as temporary fixing, the spacing between the joints can be established reliably and easily.

[Brief explanation of drawings]

Fig. 1 is a sectional view, Fig. 2 is a side view, and Fig. 3 is a plan view. DESCRIPTION OF SYMBOLS 1... Reinforcing bar holding part, 11... Receiving part, 2... Joint spacing holding part, 25... Receiving part, 26... Opening part,
3...Divided surface, B...Bolt, D...
・Joint spacing, N...Nut, R, Ra...
Reinforcing bars, S, S...joints. Patent applicant Hasegawa Construction Co., Ltd. Figure 3

Claims (1)

[Claims] Consists of a cylindrical reinforcing bar holding part and a cylindrical joint spacing holding part concentrically connected to this holding part, and is divided into both holding parts so that it can be divided into a plurality of parts. The surfaces are provided in the axial direction, and a receiving part is formed on the inner periphery of both holding parts to come into contact with a tapered part formed on the reinforcing bar joint, and a bolt connecting the joints is attached to the joint spacing holding part. A temporary holder for a reinforcing bar joint, characterized by having an opening for operating a nut attached to the reinforcing bar joint.