JPH0738563Y2 - Steel column screw rebar connection aid - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an auxiliary tool used when connecting a screw rebar used as a main bar of a steel column.

[Conventional technology]

Conventionally, screw reinforcing bars are used as the main bars of steel columns, but when installing these thread reinforcing bars as the main bars, it is necessary to connect the screw reinforcing bars according to the height of the building, and connect the screw reinforcing bars. Is connected by connecting the thread ridges of both screw rebars and screwing a long nut into the connecting portion. The following two methods are known as such methods. That is, (1) After abutting the ends of the two screw reinforcing bars, one of the reinforcing bars is rotated so that the threads are continuous until the threads are continuous.

(2) After abutting the ends of the two rebars, assume a virtual thread on the extension of the thread of one rebar, and rotate the other rebar until it is continuous with the thread of the other rebar. Move back and forth in the direction.

[Problems to be solved by the device]

The above-mentioned conventional method (1) is easy to work, but when the cross section of the screw reinforcing bar is oval and the hoop reinforcing bar provided around the steel column is strongly engaged, the screw reinforcing bar can be rotated. In such a case, it is necessary to use the method of (2) because it becomes difficult, but to perform the method of (2), while connecting the screw rebars with long nuts, the length is about 3.5 m. , Weighs 25
Since it is necessary to hold a screw rebar of about kg kg above the end of the screw rebar to be connected and adjust the position up and down, it is a very labor-intensive and labor-intensive operation, which is dangerous. In addition, there is a drawback that one operator is required for the operation of holding and adjusting the screw reinforcing bar to be installed, and another one is required for the operation of screwing the long nut.

An object of the present invention is to solve the above-mentioned drawbacks and to provide a screw rebar connecting aid for a steel column, which enables one worker to easily carry out the work of holding and adjusting a heavy screw rebar. To do.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the present invention solves the above-mentioned problems by attaching a holding member, which is detachably attached to the tip of a handle, to the upper end of the supporting column so that the holding member can be pivoted up and down at a position close to the holding member. A means for a screw rebar connecting aid for a steel column having a holding portion for holding a screw rebar, which is the main bar of the steel column, is attached below the.

〔Example〕

In FIG. 1, a support column 1 is mounted on a slab concrete 4 so that its height can be adjusted by a nut 3 screwed to a threaded portion 2 at its lower end.

Below the support column 1, a holding portion 8 having a front end having a stopper 7 for holding a screw reinforcing bar 6 which is a main bar of the steel column 5 is opened.
Is attached by an arm 9 at the rear end, and the rear end of the holder 11 having an opening 10 for holding a newly-installed screw rebar 6a is extended at its upper end as shown in FIG. A holding member (14) screwed to a screw (13) at the front end of a shank (12) is rotatably mounted in a vertical direction by a shaft (15) at a position near the holder (11).

The holder 11 having a size corresponding to the diameter of the screw reinforcing bar 6a is prepared and placed, and the holder 11 can be replaced by removing it from the screw 13 so that it can be held according to the diameter of the screw reinforcing bar 6a. It is like this.

In the figure, 16 is a connecting body made of long nuts that are screwed into the screw reinforcing bars 6 and 6a.

In order to use the above-mentioned screw rebar connecting aid, as shown in FIG. 3A, the connecting rod 16 is screwed to the upper end built as the main bar of the steel column 5, and the supporting column 1 is attached to the screw rebar 6. After the holding portion 8 attached to the lower arm 9 is engaged and held by the stopper 7 to erect the support pillar 1, the worker pushes down the right end portion of the handle 12 of the holding member 14 with the right hand. As a result, the holder 11 at the left end is inclined obliquely upward, and then the newly installed screw rebar 6a is placed on the already installed screw rebar 6 as shown in FIG. After holding the screw rebar 6a by engaging the opening 10 of the holder 11 with the screw rebar 6a as shown in the drawing, the holder as shown in the enlarged portion of FIGS.
By moving 11 up and down with the handle 12, the upper screw rebar 6a
And each screw thread of the lower screw rebar 6 moves its virtual extension line to a continuous position, and the connecting body 16 is rotated by the left hand to connect the upper and lower screw rebars 6a, 6 and then as shown in FIG. By removing the auxiliary tool, a single worker can connect the heavy-weight screw reinforcing bar 6a to the lower screw reinforcing bar 6.

[Effect of device]

In this invention, by holding the screw rebar in the holder and operating the handle, the screw rebar, which is a heavy object, can be lightly moved up and down by the lever principle to make the threads continuous.
This operation and the operation of connecting the upper and lower screw rebars with the connecting body can be performed by one worker, and labor saving can be achieved as compared with the conventional case of requiring two workers. Since the work is light work, safety can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing a part in a cutting plane, FIG. 2 is a partly cutting plan view, FIGS. 3A to 3C and F are schematic views for explaining the operation, FIG. 3D and Similarly, FIG. E is a schematic view showing a part of the circle in an enlarged manner. 1 ... Support column, 5 ... Steel column, 6 ... Screw rebar, 6a ...
Screw reinforcement, 8 …… Holding part, 11 …… Holder, 12 …… Grip,
14 …… Holding member, 15 …… Shaft, 16 …… Connected body.

Claims (3)

[Scope of utility model registration request] 1. A holder (1
1) A holding member (14) having a handle (12) on the rear side is pivotally mounted so as to be vertically rotatable, and a steel column (5) is provided below the support column (1).
An auxiliary tool for connecting screw rebars of a steel column to which a holding portion (8) for holding a screw rebar (6) which is a main bar of the above is attached. 2. The screw rebar connecting aid for a steel column according to claim 1, wherein the holding member (14) is axially attached to the upper end of the support column (1) at a position close to the holder (11). 3. The screw rebar connecting aid for a steel column according to claim 1, wherein the holding member (14) has a holder (11) removably attached to the tip of the handle (12).