JPH074283Y2 - Clamp device for fixing formwork - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp device for fixing a mold used when building a concrete structure, and particularly as a thick end material (slap material) for holding the mold. The present invention relates to the case of using a square member.

[0002]

2. Description of the Related Art Generally, as a flap material for fixing a mold,
There are wooden flaps and steel flaps, and in recent years, those made of steel are often used in terms of strength. Further, as this steel flap, there are one using a square pipe, one using a round pipe, and one using a C-shaped steel. By the way, among the above steel flaps, the one using a square pipe has been often used in the past with a size of 60 ^mm x 60 ^mm , but recently, from the viewpoint of weight reduction, it is 60 ^mm.
× 30 ^mm size has come into use. On the other hand, as a holding device for holding the steel flap using the square pipe, a tightening metal fitting having a basic U-shape is used. As shown in FIG. 4, for example, the separator 50 is provided in a space where concrete is to be poured, and the molds 70 are provided on both sides of the separator 50.
No. 0 panel 710 surface, the male screw portion of the separator 50 is tightened with a U-shaped tightening metal fitting 10, and then a square pipe is inserted into the U-shaped space of the U-shaped tightening metal fitting 10. The horizontal flap material 60 composed of the above is installed, and then the horizontal flap material 60 is fixed by using the wedge pin 20.

[0003]

By the way, since the U-shaped tightening metal fitting 10 is formed so as to correspond to the conventional square pipe of 60 ^mm × 60 ^mm size, the width of the U-shaped space is reduced. If a square pipe with a size of 60 ^mm × 30 ^mm, which is a recent lightweight transverse flap material, is installed in this U-shaped space, an extra gap is created and the transverse flap material 60 becomes unsatisfactory. In addition, the U-shaped tightening fitting 60 is 60 ^mm × 6
Since it is a large size for adapting to a 0 ^mm size square pipe, it has the drawback of being heavy and requiring a large volume for storage or transportation to a work site. Further, the U-shaped tightening metal fitting 10 and the wedge-shaped pin 20 are separate members, and the necessary number of them are brought to the work site to perform the work of fixing the form as shown in FIG. However, in that case, there is a case where the numbers of the above two are not equal to each other, and it is necessary to perform adjustment work between the storage and the on-site procurement in order to bring them into a set state. Further, when performing the mold fixing work as shown in FIG. 4, after the U-shaped tightening metal fitting 10 is tightened to the panel 710 of the mold 70, the horizontal flap material 60 is installed, and thereafter, the wedge pin 20. However, an operator may drop the wedge-shaped pin 20 when mounting the wedge-shaped pin 20. In this case, if the work is done in a high place,
The wedge-shaped pin 20 may be a weapon and is extremely dangerous for a worker or the like below. Clamping device for fixing a formwork that solves such problems in parts storage, on-site procurement problems, and problems related to worker work efficiency or danger The purpose (problem) of the present invention is to provide the above.

[0004]

In order to solve the above problems, the present invention takes the following measures. That is, the U-shaped tightening has a U-shaped shape, has a female threaded portion made of a pierce nut or the like at the bottom thereof, and has mounting holes for mounting wedge-shaped pins on the left and right straight portions. A mold consisting of a metal fitting and a wedge-shaped pin inserted into the mounting hole for fixing the flap material after installing a thick end material (flutter material) between the right and left straight portions of the U-shaped clamping metal fitting. In the frame fixing clamp device, the positions of the wedge-shaped pin insertion mounting holes, which are respectively provided in the left and right straight portions of the U-shaped fastening member, are provided so that the distance from the bottom portion is slightly different on the left and right. , A chain is used to connect between the tip of either one of the left and right straight portions and the end of the wedge-shaped pin located on the opposite side of the wedge tip (wedge base end). I decided.

[0005]

With the above construction, in the present invention, the work of fixing the mold can be carried out according to the following procedure. First, as shown in FIG. 2, the mold 7 is installed while holding the space into which concrete is to be poured. A separator between both panels 71 of the mold 7 on both sides,
Alternatively, the tie bolt 5 is attached. As a result, a predetermined space is maintained between the panels 71. After that, the male screw portion provided on the tip end portion of the tie bolt 5 and the female screw portion 13 provided on the bottom portion 15 of the U-shaped tightening metal fitting 1 are fastened to each other, whereby the U-shaped tightening metal fitting 1 is Is attached to the mold 7, and the mold 7 is temporarily fixed by the U-shaped tightening fitting 1, the tie bolt 5 and the like.

When tightening the U-shaped tightening metal fitting 1 to the tie bolt 5, the left and right straight portions 11 of the U-shaped tightening metal fitting 1 are positioned vertically as shown in FIG. As shown in FIG. 2, the position of the mounting hole 14 for inserting the wedge-shaped pin 2 provided in the linear portion 11 is adjusted so that the bottom portion 15 (of the frame 7) The panel 71 is mounted such that the position of the upper mounting hole is closer to the panel surface by the value D than the position of the lower mounting hole. As a result, in the case where the horizontal flap members 6 are installed in a double manner, as shown by the alternate long and short dash line in FIG. 2, on the upper linear portion 11 of the U-shaped tightening fitting 1,
This is because the lateral flap material 6 can be held by further installing the lateral flap material 6 and sandwiching the lateral flap material 6 with the crosspiece 72 provided on the mold 7 and the wedge-shaped pin 2.

Incidentally, in such a series of mold fixing work, in the present invention, as shown in FIG. 1, the U-shaped tightening fitting 1 and the wedge-shaped pin 2 are connected by a chain 3. As it is decided to use the one shown in FIG.
In order to install the wedge-shaped pin 2 in the mounting hole 14 provided in the linear portion 11 after the horizontal flap material 6 is installed between the linear portions 11 of the U-shaped tightening fitting 1, The wedge-shaped pin 2 connected to the tip portion 12 of the linear portion 11 via the chain 3 can be grasped and easily inserted into the mounting hole 14. Therefore, the work of mounting the wedge-shaped pin 2 is simple, the work efficiency is improved, and even if the wedge-shaped pin 2 is not gripped, the wedge-shaped pin 2 is connected to the U-shaped tightening fitting 1 by the chain 3. Therefore, it does not fall, and the safety is ensured even for the workers and the like below.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the configuration of this embodiment is U
The bottom portion 15 has a female screw portion 13 made of a pierce nut or the like, and the left and right linear portions 11 are connected to the bottom portion 15. , A mounting hole 14 for inserting a wedge-shaped pin described later
And a wedge-shaped pin 2 inserted into a mounting hole 14 provided in the straight line portion 11 of the U-shaped tightening metal fitting 1, and the U-shaped tightening metal fitting. 1 and a chain 3 for connecting the wedge-shaped pin 2 to each other.

In such a basic structure, the U-shaped tightening fitting 1 is further provided with a stay 1 for keeping the space between the left and right straight portions 11 at a predetermined value.
6 is provided, and the position of the mounting hole 14 for inserting the wedge-shaped pin 2 provided in the linear portion 11 is
As shown in FIG. 2, the distance from the bottom portion 15 is set to be slightly different (only the value of D) in the left and right units. Further, a circular ring 31 for attaching the chain 3 is provided at the tip 12 of either one of the left and right straight portions 11.

Next, the wedge-shaped pin 2 inserted into the mounting hole 14 provided in the linear portion 11 has a tapered shape made of a general flat plate steel plate or the like, and the wedge tip portion 2
A circular ring 32 for attaching one end of the chain 3 is provided at an end portion (wedge base end portion) 22 located on the side opposite to 1. Therefore, the chain 3 that connects the U-shaped fastening member 1 and the wedge-shaped pin 2 is, specifically, a circular ring 31 provided at the straight end 12 of the U-shaped fastening member 1. And a circular ring 32 provided at the wedge base end 22 of the wedge pin 2. The length of the chain 3 is slightly longer than the length of the wedge-shaped pin 2 (about 10 to 20% longer than the length of the wedge-shaped pin), which is convenient in terms of workability and storage.

Next, a description will be given of the procedure for fixing the formwork when the formwork clamping device having the above structure is used. First, as shown in FIG. 2, a tie bolt 5 is installed in a space where concrete is to be poured, and the tie bolt 5 is
The formwork 7 including the panel 71, the stile 72, etc. is installed on both sides via. Next, the male screw portion of the tie bolt 5 protruding from the panel 72 of the mold frame 7 is engaged with the female screw portion 13 of the U-shaped tightening metal fitting 1 to tighten the U-shaped tightening metal fitting 1. . As a result, the form 7 is temporarily fixed, and the U-shaped tightening fitting 1 is attached to the panel 71 of the form 7 through the tie bolts 5. In this mounting work, when the U-shaped tightening fitting 1 is tightened, the straight portion 11 provided on the U-shaped tightening fitting 1 is located at the upper and lower positions as shown in FIG. Tightening work must be done so that it will come. Further, as shown in FIG. 2, the position of the mounting hole 14 for inserting the wedge-shaped pin 2 provided in the linear portion 11 is also the bottom portion 15 of the U-shaped tightening fitting 1 (the panel 71 surface of the form 7). On the other hand, the upper mounting holes must be installed so that they are closer to the panel surface side by the value D than the lower mounting holes. Because, by installing in this way, for example, in the case of installing the horizontal flap material 6 in a double manner, as shown by the alternate long and short dash line in FIG. By installing the lateral flap material 6 and then inserting the wedge-shaped pin 2, the upper lateral flap material 6 is also sandwiched by, for example, the crosspiece 72 and the wedge-shaped pin 2, and is securely fixed. Because.

Further, in the present embodiment, as shown in FIG. 3, the distance A between the straight portions of the U-shaped fastening member 1 is set smaller than that of the conventional one, so that, for example, as shown in FIG. In the fixing of the form at the beam bottom as shown in Fig. 2, the distance E between the form 7 for the beam bottom and the reinforcing bars 8 in the beam is specified to a predetermined value by the building standards, etc. From the original relationship, conventionally, a method of specially using a foam tie (registered trademark) 110 having a rod-like shape is used for such a portion, but in this embodiment, in FIG. As shown in, the U-shaped tightening fitting 1 can be used as it is.

[0013]

According to the present invention, a clamp device for fixing a concrete formwork has a U-shape, and has a female threaded portion such as a pierce nut at the bottom and is connected to the bottom. To the U-shaped tightening fitting having a straight part on the left and right, and a fitting hole for inserting a wedge-shaped pin in the straight part, and to the mounting hole provided in the straight part of the U-shaped tightening fitting. Since the wedge-shaped pin, the tip of the linear portion provided on the U-shaped fastening member, and the wedge-shaped pin are connected by a chain, the work for fixing the formwork is performed. After mounting the lateral flap material, a person can easily grasp the wedge-shaped pin connected to the U-shaped fastening fitting and insert it into the mounting hole when mounting the wedge-shaped pin. You can increase efficiency, Even failed to grasp the gutter the wedge pin, the wedge-shaped pin does not fall, can also ensure safety to workers and the like in the lower. Further, since the U-shaped tightening fitting and the wedge-shaped pin are connected via a chain and are always integrated, U
The letter-shaped clamp and the wedge-shaped pin are always managed as a set, and the number of both will always be the same for storage of parts and collection of parts at the work site. You can increase efficiency. Further, in the present invention, since the U-shaped tightening member and the wedge-shaped pin are connected by the chain, the chain is attached in various operations including the insertion of the wedge-shaped pin into the mounting hole. It does not get tangled and is very easy to handle. Furthermore, since both the U-shaped tightening member and the wedge-shaped pin are made smaller and lighter in weight, when carrying them, especially when carrying them to a high place work place, it is necessary to carry a large amount of the above parts at one time. Therefore, the work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of a U-shaped fastening member, a wedge pin, and a chain according to the present invention.

FIG. 2 is a view showing a use state of the mold fixing clamp device according to the present invention.

FIG. 3 is a view showing a state in which the mold fixing clamp device according to the present invention is used for the beam bottom.

FIG. 4 is a view showing an assembled state of a mold when a conventional clamp device for fixing the mold is used.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 U-shaped fastening metal fitting 2 Straight part 12 Tip part 13 Female screw part 14 Mounting hole 15 Bottom part 16 Stay 2 Wedge pin 21 Wedge tip part 22 Wedge base part 3 Chain 31 Circular ring 32 Circular ring 5 Tie bolt (separator) 6 Horizontal flap material 7 Formwork 71 Panel 72 Barber 8 Reinforcing bar

Claims (1)

[Scope of utility model registration request] 1. A U-shaped structure having a female threaded portion made of a pierce nut or the like at its bottom and mounting holes for mounting wedge-shaped pins on the left and right straight portions. After installing the thick end material (flutter material) between the left and right straight parts of the U-shaped tightening fitting and the U-shaped tightening fitting, the fixing hole is fixed in the mounting hole for fixing the thick end material (flutter material). In a clamping device for fixing a frame, which comprises a wedge material pin to be inserted, the position of the wedge-shaped pin insertion mounting hole provided in each of the left and right straight portions of the U-shaped fastening metal fitting is set to a distance from the bottom portion. Are provided so as to be slightly different on the left and right sides, and the tip end of any one of the left and right linear portions and the end portion (the wedge base end portion) of the wedge-shaped pin located on the opposite side of the wedge tip end portion. Formwork characterized in that it is configured to connect between with a chain Clamp device for fixing.