JPH0347076Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention is designed to hold the formwork immovable with a tie bar when forming a concrete wall by pouring fresh concrete between two facing formworks. This invention relates to a formwork adjusting machine used for fixing.

(Prior art) The formwork tie bar used in concrete formwork assembly work is commonly known as Mimi, which is attached to the formwork side.
A T-bar is provided in the middle and a pin is inserted into the pin hole of both to connect them together, but if the joint between the Mimi and T-bars is not pulled strongly against each other and secured with a pin, the tension will loosen and the shape will deteriorate. The frame cannot be installed accurately. In the past, since there was no suitable fastening tool to perform this work, the common method was to pull the ear and T-bar by input, align the pin holes, and quickly insert the pins.

However, this method requires a lot of labor and time, is inefficient, and has problems in that it is difficult to attach the formwork forcefully and reliably.

(Technical issue) Therefore, in the present invention, the pin holes can be aligned by operating the handle rod so that the two bars for fastening the formwork are pulled together, and even if the handle rod is released, the traction can be maintained. The technical challenge is to be able to maintain the same position.

(Technical Means) In order to solve the above-mentioned technical problem, the present invention is a tool that operates two bars that connect the formwork so as to draw each other together, and one bar can be freely slid along a guide piece. A main body consisting of a metal plate that is attached to the main body and fixes the other corresponding bar in a fixed position by engagement of a pin, a handle rod that is pivoted about a support shaft on the bracket part of the main body, and the handle rod. It consists of a traction rod which is pivotally attached to the middle of the slider with a pivot pin, and this traction rod is provided with an engaging pin for engaging the slide bar.

(effect) The above technical means works as follows.

Place the two bars 1 and 2 against each other and place the connecting parts at both ends on the lower part of the main body 3, align one of the pin holes 4 of the bar 2 with the pin hole 5 on the main body side, and insert the engaging pin 6 there. insert. Further, the clamp screw 7 is tightened to fix the bar 2 immovably so as to support it from below.

The other bar 1 is attached to the lower side of the main body 1 and is guided by a guide piece 15 so that it can slide freely.

The handle rod 8 is turned to the left in FIG. 1, and the pin hole 10 at the tip of the traction rod 9 is aligned with one of the pin holes 11 arranged in a row on the bar 1 side, and the engagement pin 12 is inserted therein. .

In this state, when the handle rod 8 is operated to the right (arrow A), the traction rod 9 rotates around the support shaft 8a.
At the same time, the bar 1 is pulled to the right (arrow B) and slides toward the bar 2, which was fixed to the main body 1 side first, so that both bars 1 and 2 overlap and their pin holes 4 and 11 match. .

When the lock screw 22 is tightened in this state, the handle bar 8 and the bracket 13 are locked and the towed position is maintained. Next, when the connecting pins 21 are fitted and locked into the matching pin holes 4 and 11 of both bars 1 and 2, both bars 1 and 2 are combined into one body.

To remove the set, just loosen the clamp screw 7 and pull out the engagement pins 6, 12.

(effect) The present invention has the following unique effects.

The main body is set at the joint between the two bars to be joined, and by one-touch operation of the handle rod, both bars can be pulled together and the formwork can be assembled efficiently.

Both bars can be pulled powerfully by applying levers.

It is easy to set up and remove, and anyone can easily handle it.

The handle can be locked at the position you operate it, making work easier.

The configuration is simple and can be implemented at low cost.

EXAMPLE Bars 1 and 2 have a T-shape so that they can be superposed on each other. One side 1 is called T-bar and the other side 2 is called Mimi. The end of the earpiece is fixed to the formwork side, and the T-bar is used not only as an intermediate bar but also as an anchor to embed and fix the end in the floor surface.

Both bars 1 and 2 have a large number of pin holes 4 and 11 at regular intervals.

The clamp screw 7 is provided on a holding base 16 extending from the main body 3, and is moved up and down by a screw rotation operation so that the bar 2 is clamped between the bottom surface 3a of the main body 3 and a holding plate 7a provided at the tip of the screw. It shall be held in a compressed state.

The lock screw 22 is screwed into the base frame 18 of the handle bar 8 from the side so that the tip of the screw protrudes and retracts inside.

The side surface of the bracket 13 to which the locking screw 22 corresponds is provided with recesses 19 arranged in a circular manner into which the locking screw tips engage.

The engaging pins 6 and 12 are connected to strings 23 and 2 such as chains.
4, it is connected to the main body 3 and the traction rod 9 to prevent it from being lost.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the formwork adjustment machine of the present invention in use, Fig. 2 is a plan view thereof, Fig. 3 is a front view partially shown in cross section, and Fig. 4 is a cross section of the bar joint. It is a diagram. 1, 2... Bar, 3... Main body, 4, 5... Pin hole, 6... Engagement pin, 7... Clamp screw, 8...
... Handle rod, 9 ... Traction rod, 10, 11 ... Pin hole, 13 ... Bracket, 15 ... Guide piece,
17... Engagement pin, 22... Lock screw.

Claims (1)

[Claims for Utility Model Registration] (1) A tool for manipulating two bars that connect formwork together so as to draw them together, which allows one bar to slide freely along a guide piece while attaching the corresponding other bar. A main body consisting of a metal plate that fixes the bar in a fixed position by engagement of a pin, a handle lever that is pivoted about a pivot on the bracket of the main body, and a pivot pin in the middle of the handle lever. 1. A formwork adjusting machine comprising a shaft-mounted traction rod, the traction rod being provided with an engaging pin for engaging the slide bar. (2) The formwork adjusting machine according to claim 1, wherein the handle rod is provided with a locking screw for locking the traction rod in position. (3) The formwork adjustment machine according to claim 1, wherein the main body is provided with a clamp screw that tightens the bar so as to support it from below.