JPS6210358Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a temporary fixing device for formwork plates for constructing concrete walls.

When constructing concrete walls for buildings, etc., formwork plates facing each other with appropriate wall thickness intervals are placed upright and arranged in rows vertically and horizontally, so that no growth occurs in the gaps between the formwork plates. It is constructed by filling concrete, but in order to temporarily fix each formwork plate in a predetermined position, a large number of crosspieces are used and fixed with nails, and the formwork plates are placed facing each other. In order to maintain a constant opposing distance between the two mold plates, a constant distance maintaining rod is interposed between the two frame plates. However, since each of the crosspieces is cut to a predetermined length to match the height of the formwork board, it cannot be reused for formwork boards of different heights, and moreover, it cannot be fixed by nailing it to the formwork board. This not only causes severe damage to the crosspieces and formwork boards, making them unsustainable for repeated use, but also leads to a significant increase in the number of man-hours required for the nailing process itself. It is difficult to remove and disassemble it. Particularly when the formwork board is supported by a steel profile, it is impossible to fix the formwork board by driving nails into it. Further, when the regular spacing holding rods are interposed between opposing formwork plates, it takes a lot of man-hours to attach the holding rods, and it is necessary to provide a large number of holding rods.

The present invention solves the above-mentioned conventional drawbacks, and allows form plates to be temporarily fixed to steel supports easily and removably, without the need for conventional crosspieces or regular spacing rods, etc. Moreover, the object of the present invention is to provide a temporary fixing device for formwork boards for constructing concrete walls, which does not require the work of nailing and removing nails.

To explain the embodiment, 1 is one end holding part 2
It is an outer cylindrical body in which a center opening 3 is provided at the other end, and a spring receiving member 5 is fitted into the inner periphery of the other end opening 4. A tapered surface 6 is formed in the hollow portion in a tapered shape toward. 7
is a flexible inner cylinder fitted into the outer cylinder 1 from the other end opening 4 side, and the inner cylinder 7
The forward end of the cylindrical body 1 is provided in a longitudinally quartered shape 10, and a pressure stop member 9 is provided protruding from each end thereof, and each pressure stop member 9 has an outer circumferential surface that is tapered on the inner circumference of the outer cylinder 1. Tapered surface 11 that can make surface contact with surface 6
The inner circumferential surface 12 thereof is provided at a position flush with the inner circumferential surface of the inner cylindrical body 7. Reference numeral 8 denotes a pulling portion protruding from the rear end portion of the inner cylindrical body 7. 13 is the inner cylinder body 7
A compression spring is provided on the outer circumferential surface of the compression spring 13, and one end of the compression spring 13 is brought into pressure contact with the end surface of the pressure stopping member 9, and the other end is brought into pressure contact with the spring receiving member 5, so that the inner cylindrical body 7 It is provided so that one end is always biased toward the clamping portion 2 side. 14 has a clamping plate portion 15 at one end.
A clamping member having a rod-shaped portion 16 protruding from the center of the clamping plate portion 15 of the clamping member 14 is passed through the center opening 3 of the outer cylinder 1 between the pressing members 9 and the inner cylinder. It is removably inserted into the interior 17 of 7.

In the above configuration, when using the present device, first, a large number of steel columns 19 as supporting members are vertically placed at appropriate intervals on the surface of the form board (veneer board) 18 to be erected at a predetermined position. in contact with the formwork plate 1
8 and the holes 18a, 1 drilled in advance in the support 19.
Match the positions of 9a. Next, one end of the clamping part 2 of the outer cylinder 1 is brought into contact with the pillar 19 so that the center opening 3 of the outer cylinder 1 is aligned with the hole 18a of the support 19, and then the rod-shaped part of the clamping member 14 is 16 into the inner cylinder 7 through the hole 18a of the form plate 18, through the column hole 19a and the center opening 3 of the outer cylinder 1, and strongly press the clamping member 14 to release the clamping plate part of the clamping member 14. 15 and one end clamping portion 2 of the outer cylinder 1, the form plate 18 and the support column 19 are clamped. In this case, the formwork plates 18 are held and supported by the support columns 19 at the same time.

When the rod-shaped portion 16 of the clamping member 14 is strongly pushed into the interior 17 of the inner cylinder 7, the compression spring 13
As a result, each pressing member 9 is always urged toward one end of the clamping portion 2, and the inner circumferential surface of the outer cylinder 1 forms a hollow tapered surface 6 toward the tip. , each pressing member 9 is pressed against the tapered surface 6, and at the same time a force acting in the centripetal direction of the inner cylinder body 7 acts,
The longitudinal quarter-shaped portion 10 of the inner cylinder body 7 is slightly bent inward, and the inner circumferential surface constituted by each pressing member 9 strongly presses against the outer circumferential surface of the rod-shaped portion 16. Therefore, the clamping member 14 is securely fixed at any insertion position of the rod-shaped portion 16 that can be inserted into the inside 17 of the inner cylinder body 7, so that the frame plate 1 having various thicknesses can be fixed.
8 and the support column 19 can be securely fixed.

In addition, when removing the present device when dismantling the form board 18, as shown in FIG.
The holding member 14 can be removed while pulling it in the direction of the arrow. That is, by pulling the pulling part 8 in the direction of the arrow, the inner cylinder body 7 moves in the same direction against the stored force of the compression spring 13, and each The pressing member 9 interlocks with the inner circumferential tapered surface 6 of the outer cylinder 1.
Therefore, each pressing member 9 does not lose its centripetal pressing force against the rod-shaped portion 16 of the clamping member 14, and the rod-shaped portion 16 of the clamping member 14 can be easily extracted from the inside 17 of the inner cylinder body 7. .

FIG. 6 shows a modified embodiment in which a form plate 18 is held between the clamping plate part 15 of the clamping member 14 and the clamping part 2 at one end of the outer cylinder 1, and the outer periphery of the outer cylinder 1 is A hole 2 in which a threaded shaft 21 is protruded from the extended end of a support tube 20 that is fixedly fitted onto a surface, and the threaded shaft 21 is pre-drilled in a frame 22 as a support member.
3 and screwing nuts 24 thereto to support the outer cylindrical body 1 with respect to the frame 22.
8 is fixed, and the pulling part 8 of the inner cylinder body 7
When the support tube 20 is to be pulled, it is operated through an opening 25 formed by opening the opposing wall portions of the support tube 20.

Although the front end of the inner cylindrical body 7 is provided in a vertically quartered shape 10, the number of divisions is not specifically limited. It goes without saying that there is no limit to the number of .

Since the present invention has the above-described configuration, it exhibits various excellent effects as described below.

(a) The formwork plate can be removably clamped and the formwork plate can be easily temporarily fixed to the support and released from the temporary fixation state, which is very convenient for work and eliminates the need for conventional nailing work. And work efficiency is greatly improved compared to nail extraction work.

(b) According to the present device, it is possible to temporarily fasten the formwork plate and the steel support, and since the formwork plate is reliably temporarily fixed, there is no need for crosspieces, regular spacing holding rods, etc. Therefore, the robustness of the formwork plate can be guaranteed, and the number of man-hours required can be greatly reduced.

(c) Since the proposed device can be used repeatedly, it has a very large economic effect, and the structure of the entire device is simple, and the operation is reliable, there is little risk of failure, and it is easy to manufacture. .

(d) Since the rod-shaped portion of the clamping member can be securely fixed at any insertion position inside the inner cylinder, it is not affected by the thickness of the formwork board, etc., and can be used for formwork boards, etc., having various thicknesses. Both can be reliably temporarily fixed.

(e) By using the proposed device, damage to the formwork plates can be prevented and the formwork plates can be reused several times.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an embodiment of the present invention in a clamped state, Fig. 2 is a longitudinal sectional view of the clamped state released, Fig. 3 is a side view of the inner cylinder, and Fig. 4 is the same. FIG. 5 is a front view of the inner cylindrical body, FIG. 5 is a sectional view taken along the line A-A in FIG. 1 is an outer cylindrical body, 2 is a holding part at one end, 3 is a center opening, 4 is an opening at the other end, 5 is a spring receiving member, 6 is a tapered surface, 7 is an inner cylindrical body, 8 is a pulling part, 9 is a The pressing member includes a longitudinal quarter-shaped portion 10, a tapered surface 11, a compression spring 13, a clamping member 14, a clamping plate portion 15, and a rod-shaped portion 16.

Claims (1)

[Scope of utility model registration request] The tip of the flexible inner cylinder, which has a pulling part protruding from the rear end, is placed inside the outer cylinder, which has a tapered inner circumferential surface with a hollow part tapering toward the clamping part at one end, and the other end faces the opening side. a pressure stopper is provided in a protruding manner at each tip of the vertically divided portion of the forward portion of the inner cylinder, and a compression spring is provided to always urge the inner cylinder at one end toward the clamping portion; A rod-shaped portion of a clamping member having a clamping plate portion at one end can be attached to and removed from the inside of the inner cylinder through a central opening of the clamping portion at one end of the outer cylinder through a hole drilled in a formwork plate. , the form plate is clamped between one end clamping part of the outer cylinder body and a clamping plate part of the clamping member, and the outer cylinder body is supported by a support member. Temporary fixing device for formwork boards for concrete wall construction.