JP2964316B2 - Safety pin for preventing slippage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to the temporary supports for use in concrete structures built construction is related to fixing it safety pin for preventing displacement so as not fall displaced by the vibration.

[0002]

2. Description of the Related Art FIG. 8 is an explanatory view showing a use state of a temporary support used in a concrete driving process of a concrete structure construction work. In FIG. 8 , reference numeral 31 denotes a bridge installed for driving concrete. Formwork, 32 is a floor of a concrete structure, 33 is a base plate 34 at each end.
The upper and lower base plates 34, 34 are provided with four mounting holes 35 of the same shape and the same pitch. 36 is the formwork 31 and the base plate 34
It is a square bar fitted between them.

[0003] As is well known, in the concrete driving step in the construction of a concrete structure, an aggregate serving as a framework of the concrete structure is formed by an iron bar or a wire mesh, and the aggregate is surrounded by a plate (panel) or the like to form a groove. After forming the formwork 31, concrete is poured into the formwork 31 to fill the gap between the aggregates and the space between the formwork 31 with the concrete. In the case of pouring, as shown in FIG. 8 , after the form 31 is supported by the temporary support 33, a concrete driving operation is performed.

[0004]

At the time of concrete pouring work, vibration is applied to the mold 31 so that the concrete poured into the mold 31 is densely embedded in the mold.
This vibration is transmitted to the temporary support 33 supporting the formwork 31, and there is a danger that the temporary support will fall down due to displacement between the square bar 36 and the temporary support 33, and between the temporary support 33 and the floor surface 32. Was.

Accordingly, the present invention provides a method for fixing a nail having a resilient force by pressing a nail from one member to the other member so that the nail bites into the other member. In addition, it was notable that if this method was adopted, it was not necessary to nail and fix between articles and members that had to be removed later, and the technical problem was achieved. Things.

[0006]

The technical problem can be solved by the present invention as described below .

Namely, safety pin for preventing displacement according to the present invention
Is a concrete driving work for concrete structure construction
In the process, form the concrete
Mount a base plate with four mounting holes of the same pitch
The bridge is supported by a supporting column at the end via a member.
Insert into each of the mounting holes so that
A safety pin to prevent slippage
A cylindrical body having a shape that can be inserted into the mounting hole.
And at least one end of the cylindrical main body was opened and opened.
A flange formed at one end, and a hole communicating with the hollow portion at the center
A stop screw provided and screwed into the opening of the cylindrical body,
A coil spring housed in the cavity,
Due to the spring force of the spring, a sharp point
And a nail-shaped pin with an end protruding,
The flange comes into contact with the member, and the sharpness of the nail pin
The tip of the coil spring
The erection strut is fixed by being bitten by the timber.
It is intended to prevent displacement due to vibration .

Further, the present invention is the displacement preventing safety pin
In this case, the other end of the cylindrical body is opened, and
The stop screw is screwed .

Further , a safety pin for preventing slippage according to the present invention.
Is a concrete driving work for concrete structure construction
In the process, form the concrete
Mount a base plate with four mounting holes of the same pitch
The bridge is supported by a supporting column at the end via a member.
Insert into each of the mounting holes so that
A safety pin to prevent slippage
Having a bolt head that can be inserted into the mounting hole
Screw bolt and at least one end of the screw bolt
Said bolt head being formed at one open end of said bolt;
A hole is provided in the center to communicate with the cavity, and
A stop screw screwed into the opening and housed in the cavity
Coil spring and the spring force of the coil spring
Nail shape with a sharp tip protruding from the hole of the stop screw
And a bolt head, wherein the bolt head is
The sharp tip of the nail pin
Cut into the above member by the elastic force of the coil spring
In this state, the erection support is fixed and
This is to prevent slippage .

Further, according to the present invention, in the above-mentioned safety pin for preventing slippage comprising a screw bolt, the other end of the screw bolt is opened.
A stop screw is screwed into the opening .

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1

FIG. 1 is a perspective view showing a slip prevention safety pin according to the present invention, FIG. 2 is an exploded perspective view of the slip prevention safety pin shown in FIG. 1, and FIG. 3 is a slip prevention safety pin shown in FIG. FIG. 4 is a longitudinal sectional view illustrating the state of the slip prevention safety pin shown in FIG. 3, and FIG. 5 is a view illustrating the usage state of the slip prevention safety pin shown in FIG. In these figures, the same reference numerals as those in FIG. 8 denote the same or corresponding parts, and 1 denotes a slip-prevention safety pin (hereinafter simply referred to as a “pin”) formed by projecting a pin from the inside of a main body of a flanged cylindrical rod by spring pressure. The safety pin 1 includes a cylindrical body 3 having a cavity 2, a flange 4 formed at one open end of the cylindrical body 3, and an opening of the cylindrical body 3. A hole 5 which is screwed to close the opening and has a hole 5
, A coil spring 7 housed in the hollow portion 2 of the cylindrical body 3, and a sharp tip 8 formed from the hole 5 of the stop screw 6 by the spring pressure (resilient force) of the coil spring 7. And a nail-shaped pin 10 having a flange-shaped stopper 9 formed near the other end. Note that 11
The safety pin 1 is inserted into the mounting hole 35 of the base plate 34 below the temporary support column 33 so that the safety pin 1 inserted downward does not come off.
Is a rubber ring inserted into the main body 3 of FIG.

Next, a description will be given of a method of using the safety pin for preventing displacement in the concrete driving step in the construction of a concrete structure.

As shown in FIG. 3 (a), when the formwork 31 is supported by the temporary support 33, the safety pins 1 are respectively inserted into four mounting holes 35 provided on the base plate 34 on the temporary support 33. Is inserted so that the pin 10 faces upward. At this time, since the collar 4 is formed on the safety pin 1, the safety pin 1 does not fall out of the mounting hole 35. The safety pin 1 is inserted into the base plate 34 below the temporary support 33 so that the pin 10 faces downward. Next, a square bar 36 is applied to the protruding pin 10 of the safety pin 1, and a temporary support 33 is provided between the lower surface of the mold 31 and the floor 32 as shown in FIG.
Is established.

As shown in FIG. 4A, the safety pin 1 has a state in which the tip 8 of the pin 10 projects from the hole 5 by the spring pressure of the coil spring 7. , The pin 10 of the safety pin 1 abutting on the square bar 36 is pressed and pushed into the cavity 2 of the safety pin 1, but the tip 8 of the pin 10 is angled by the spring pressure of the coil spring 7. It will bite into the rod 36. The safety pin 1 also acts on the floor.

In the present embodiment, the tip 8 of the pin 10 is moved by the spring pressure of the coil spring 7 so that the square bar 36 and the floor 3
2 is inserted into the temporary support 3
3 acts as if nailed to the square bar 36 and the floor surface 32, and does not shift even if vibration is transmitted to the temporary support 33, and after the work is completed, the temporary support 33
Since it is not nailed to the square bar 36 and the floor surface 32, it can be easily removed.

The outer shape of the rod material forming the main body 3 of the safety pin 1 may be a cylinder, a polygon such as a square or a hexagon, and the shape may change from the middle even if it has a constriction in the middle. And any shape may be used.

Since the flange serves as a stopper, the shape of the flange is not limited to a disk shape, but may be a shape in which a plate piece spreads radially or a thick boss shape. You may.

Embodiment 2

FIG. 6 is an exploded perspective view of a safety pin for preventing slippage according to the present invention. In FIG. 6, the same reference numerals as those in FIGS. 1 and 2 denote the same or corresponding parts. Corresponds to the first embodiment. In this modification, the cylindrical body 3 of the safety pin 1 is in the shape of a cylinder with an open top and bottom, and a stop screw 13 cut with a slit 12 is screwed into an opening below the cylindrical body 3. is there. In addition, nail pin 1
At 0, a disc-shaped stopper 9 is formed.

In the present embodiment, after the stop screw 6 through the nail pin 10 is screwed into the flange-side opening of the cylindrical main body 3, the coil spring 7 is inserted from the other opening to stop the stop screw 13. If the screw is screwed into the opening, the safety pin 1 can be easily assembled.
The spring pressure of the coil spring 7 in the cavity 2 can be changed depending on the degree of tightening of the coil 3.

Embodiment 3 FIG.

FIG. 7 is a longitudinal sectional view showing a use state of the safety pin for preventing slippage according to the present invention.
3 denote the same or corresponding parts, the safety pin 14 in the present embodiment uses a hexagonal bolt instead of a flanged cylindrical rod, and a bolt head 15 is shown in FIG. The thread 16 corresponds to the cylindrical body 3 of the safety pin 1. And screw part 1
6, a cavity 2 is formed, and a coil spring 7 is housed in the cavity 2. In addition, 17 is a nut.

In the present embodiment, since the shape of the safety pin is a hexagonal bolt, it can be used by being screwed to the base plate 34 of the temporary support 23 with the nut 17 as shown in FIG. In addition, since screw bolts are standardized, they can be directly screwed to the angle of a reinforcing bar or the like.

[0026]

As described in the foregoing, according to the present invention, co
Sharp tip of nail pin due to elasticity of Il spring
Is cut into the member that supports the formwork,
The strut acts as if it is nailed to the member
Therefore, even if vibration is transmitted to the temporary support, it does not shift.
After the work is completed, the temporary strut is nailed to the member.
Because it is not, it can be easily removed.

[0027] Therefore, the erection during concrete driving work
You can avoid the danger that the support will fall,
It can be said that the industrial utility of the present invention is very high.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a slip prevention safety pin according to the present invention.

FIG. 2 is an exploded perspective view of the slip prevention safety pin shown in FIG.

FIG. 3 is a view for explaining a use state of the shift prevention safety pin shown in FIG. 1;

FIG. 4 is a vertical cross-sectional view illustrating a state of a safety pin for preventing slippage shown in FIG. 3;

FIG. 5 is a view for explaining a use state of the slip prevention safety pin shown in FIG. 1;

FIG. 6 is an exploded perspective view of the slip prevention safety pin according to the present invention.

FIG. 7 is a longitudinal sectional view showing a use state of the safety pin for preventing displacement according to the present invention.

[Fig. 8] Concrete striking of concrete structure construction work
Illustrates the use condition of temporary supports used in the installation process
FIG.

[Explanation of symbols]

 Reference Signs List 1,14 Safety pin for prevention of slip 2 Cavity 3 Body 4 Flange 5 Hole 6,13 Stop screw 7 Coil spring 8 Tip 9 Stopper 10 Pin 11 Ring 12 Slot 13 Stop screw 15 Bolt head 16 Screw part 17 Nut 31 type Frame 32 Floor surface 33 Temporary support 34 Base plate 35 Mounting hole 36 Square bar

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-53-53442 (JP, A) JP-A-63-48672 (JP, A) JP-A-7-127487 (JP, A) JP-A-4- 237717 (JP, A) JP-A-6-170674 (JP, A) JP-A-4-350999 (JP, A) JP-A-63-191347 (JP, A) JP-A-5-196450 (JP, A) JP-A-6-142788 (JP, A) JP-A-4-125306 (JP, A) JP-A-5-44443 (JP, U) JP-A-4-105462 (JP, U) JP-A-64-24982 (JP, U) Hikaru Hei 5-34689 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) F16B 19/02

Claims (4)

(57) [Claims] 1. Concrete for construction of concrete structure
Use the same formwork for pouring concrete in the
Four mounting holes with the same pitch are provided in one shape
Supported by members by erected supports with
Each of the above-mentioned
A safety pin to prevent slippage that is inserted into the mounting hole.
Shape having a cavity and being insertable into the mounting hole
A cylindrical body, and at least one end of the cylindrical body is opened
A flange formed at one end of the opening,
A stop provided with a through hole and screwed into the opening of the cylindrical body
Female screw and coil spring housed in the cavity
And the hole of the stop screw by the elastic force of the coil spring
And a nail-like pin with a sharp tip protruding from
And the nail contacts the member and the nail
The sharp tip of the pin is the elastic force of the coil spring.
By entering into the member by the above by the said
A safety pin for preventing slippage, wherein the mounting pillar is fixed to prevent slippage due to vibration. 2. The other end of the cylindrical main body is open,
2. The safety pin according to claim 1 , wherein a stop screw is screwed into the opening . 3. Concrete for construction of concrete structure
Use the same formwork for pouring concrete in the
Four mounting holes with the same pitch are provided in one shape
Supported by members by erected supports with
Each of the above-mentioned
A safety pin to prevent slippage that is inserted into the mounting hole.
Shape having a cavity and being insertable into the mounting hole
Bolts with bolt heads of
The one end is open and the one end is formed at the open end.
A bolt head and a hole in the center leading to the cavity are provided.
A set screw screwed into the opening of the screw bolt, and the cavity
Coil spring and coil spring
Projecting from the hole of the stop screw due to the elastic force of
And a nail-shaped pin that has been protruded.
When the head comes into contact with the member, the sharp
The member tip Ri by the resilient force of the coil spring
Fixes the erecting column by cutting into the
A safety pin for preventing slippage, which prevents slippage due to vibration. 4. The other end of the screw bolt is open, and
The safety pin according to claim 3 , wherein a stop screw is screwed into the opening .