JPS5926025Y2 - Shoring connection fittings for concrete formwork - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a shoring system that supports concrete formwork such as metal formwork from behind by bringing thick timbers into contact with the back of the formwork. This invention relates to improvements in connecting fittings for tightening and fixing end pieces to formwork.

This type of connecting fitting is used in a state where it is fixed to the formwork by inserting and locking its one end into a hole formed in the overlapping peripheral plate of the adjacent formwork. Conventionally, when connecting formwork peripheral plate parts that overlap each other, a U-clip is inserted into a hole formed in the overlapping peripheral plate part at a location different from the hole in which the connecting fitting is inserted and locked, and then the U-clip is rotated to join together. The peripheral plate portion was held and fixed by the U-clips from both sides in the overlapping direction.

However, in this case, the shoring connection fittings and the U-clip are separate bodies, which makes handling and management of them inconvenient and requires separate work at different positions, resulting in poor workability.

Furthermore, regarding the connecting fittings themselves, conventionally, as shown in Japanese Utility Model Application Publication No. 52-43324,
Since the end pieces were pressed through the connecting rods for locking the overlapping peripheral plate, which were separate from each other, and the washer frames for the overlapping parts were designed to be assembled on-site, there was a problem in terms of handling management and work efficiency. There was a problem.

The concrete 1/formwork support connection fittings according to the present invention are as follows:
It was developed with the aim of resolving this inconvenience, and a pin that can be inserted into and removed from the connecting hole formed in the overlapping peripheral plates of adjacent concrete formworks is attached to one end in the longitudinal direction. Thick material pressing is capable of holding and holding a thick piece of material that is in contact with the back of the concrete formwork on a certain connecting fitting body, and presses and moves the held thick piece of wood toward the concrete formwork by driving a wedge. and a movable clamping tool capable of clamping and fixing the overlapping peripheral plate part from both sides in the overlapping direction between the one end of the main body by driving from the outside with the pin inserted into the connecting hole. It is characterized by being attached so that it can be moved freely only in the longitudinal direction.

That is, both the clamping tool for clamping and fixing the overlapping peripheral plate part and the pressing tool for pressing the end material are attached in advance to the connecting fitting body itself which is latched and fixed to the overlapping peripheral plate part. ,
Both in terms of handling and construction, these can be handled as parts and managed as a whole, which is much easier than in the conventional case.Moreover, the clamping work and pressing work can be done in parallel at the same location. As a result, work efficiency can be improved compared to conventional methods, and it has become possible to almost eliminate the possibility of forgetting to perform one task.

Although the clamping tool and the pressing tool are attached to the connecting fitting body in advance, both are movable in the longitudinal direction relative to the main body, so it is difficult to move the main body relative to the formwork. For the work of locking and bringing the end pieces into contact with the formwork,
I have never had any problems.

Hereinafter, embodiments of the present invention will be described based on the drawings.

Metal box-shaped concrete formworks 6, 6 are arranged vertically adjacent to each other with their peripheral plate portions 6a, 6a overlapping each other, and both end portions 5a.

A pin 2 attached to one end in the longitudinal direction of the main body 1 of the shoring connection fitting is removably inserted into connection holes 6b, 6b drilled at the same position in 6a.

The main body 1 is made by bending a single metal plate into a U-shaped vertical cross section, and the pin 2 attachment portion is formed on a flat plate portion 1a in a horizontal position.

The left and right side plate portions 1b and lb forming the U-shape of the main body 1 are each provided with a long hole 1 along the longitudinal direction of the main body 1 in the middle of the main body 1 in the longitudinal direction.
c and 1c are drilled, and for one long hole 1C,
The pressing tool 3 is used to hold the back of the vertical thick material 7 in contact with the back of the formworks 6, 6, and is relatively movable only in the direction of the elongated hole 1C via a plurality of rivets 4. It is fitted and engaged.

Further, a long hole 1e is bored along the other end of the U-shaped bottom plate portion 1d of the main body 1 in the longitudinal direction of the main body 1,
A pressing tool 3 is used to hold and hold the back of the horizontal thick material 7' which is brought into contact with the back of the vertical thick material 7 against the elongated hole 1e.
' are engaged and mounted via a plurality of rivets 4 so as to be relatively movable only in the direction of the elongated hole 1e.

The lower end of the pressing tool 3' is formed into a bifurcated shape and straddles the main body 1.

A pair of left and right tip claws are formed between the long holes If, If of the both side plate parts 1b, lb, which are bored along this direction at one end side in the longitudinal direction of the main body 1, with the flat plate part 1a. Part 5a
, 5a is a movable clamping tool 5 for clamping and fixing the overlapping plate parts 6a, 6a from both sides in the overlapping direction (up and down direction), and can be relatively moved only in the direction of the elongated hole 1f via a plurality of rivets 4... A locking device is installed.

This clamping tool 5 is bent from a single metal plate to have a square shape when viewed from the side and a square shape from a plan view.

The vertical thick material 7 is pressed and moved to the formworks 6, 6 side via the tool 3 by driving wedges 8 into the holes 1c, 1c,
Tightening is fixed.

Similarly, by driving the wedge 8 into the hole 1e, the horizontal thick material 7 is pressed and moved toward the vertical thick material 7 via the tool 3', and the tightening is fixed.

The overlapping plate parts 5a, 5a are clamped and fixed by driving the clamping tool 5.

In addition, the holding long holes If and If for the clamping tool 5 are set in an inclined position with the flat plate portion 1a side being higher as shown in the imaginary line.
It may be made to exhibit a wedge effect when clamping and fixing.

Further, the two press members 3, 3 may be attached in pairs symmetrically both left and right and vertically.

Furthermore, the rear pressing may be carried out without using the tool 3'.

[Brief explanation of drawings]

The drawings show an embodiment of the shoring connection fitting for concrete formwork according to the present invention, and FIG. 1 is a partially cutaway side view in a supporting state, and FIG. 2 is a plan view thereof. 1...Body, 2...Pin, 3...
...Pushing tool, 5...Movable clamping tool, 6...
...Concrete formwork, 6a...Peripheral plate part, 6
b... Connection hole, 7... Thick material, 8.
·····wedge.

Claims (1)

[Scope of utility model registration request] A connecting fitting main body 1 has a pin 2 attached to one end in the longitudinal direction, which can be inserted into and removed from connecting holes 6b, 6b formed in peripheral plate portions 5a, 5a of adjacent concrete formworks 6, 6 that overlap with each other. 2. A shaft that can hold and hold the end piece 7 that is in contact with the back of the concrete formworks 6, 6, and that presses and moves the held end piece 7 toward the concrete formwork 6 by driving a wedge 8. The material is pressed between the tool 3 and one end of the main body 1 by driving from the outside with the pin 2 inserted into the connecting hole 6b.
A shoring connection fitting for concrete formwork, characterized in that a movable clamping tool 5 capable of clamping and fixing from both sides in the overlapping direction is attached so as to be movable only in the longitudinal direction.