JPH0664812U - Formwork fixing jig - Google Patents

Abstract

(57) [Abstract] [Purpose] A jig for fixing a formwork that can prevent movement due to sliding of the frame material while taking advantage of the fact that it can be fixed by a simple operation in the conventional fixing jig. To get. In a jig for fixing a form, in which first and second holding members are attached to both ends of a C-shaped frame, a base end portion is swingable in a long hole formed in one end portion of the frame. The first holding member is attached to one end of the frame, and the first holding member is attached with a rod-shaped body oriented to the second holding member,
The second holding member is provided with a hole into which the tip of the rod-shaped body of the first holding member is fitted. As a result, the frame material of the formwork can be fixed in one operation, the work efficiency is improved, and the frame materials can be fixed so as not to move in any direction. There is no need to fix with tools.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fixing jig for a formwork, and more particularly to a fixing jig for fixing a frame material of a formwork for concrete products.

[0002]

[Prior art]

 In order to make concrete products, concrete pouring formwork is used. FIG. 4 is a perspective view showing a formwork for manufacturing the retaining wall block shown in FIG. 3, and FIG. 5 is a perspective view showing a state where the upper formwork of the formwork of FIG. 4 is developed.

In FIGS. 4 and 5, a form A is a form body including an upper form a ₁ , a ₂ , a ₃ , a ₄ and a lower form a ₅ , a bottom plate a ₆ and a core a. _{Using 7} and a ₈ as main constituent members, a bottom plate a ₆ is attached to the lower formwork a ₅ , and the cores a ₇ and a ₈ are inserted inside the formwork body to create a space for concrete filling. The bottom plate a ₆ is a template for forming the surface portion b ₁ of the block B in FIG. 3, and the cores a ₇ and a ₈ are for forming the holes b ₃ of the leg portions b ₂ of the block B. Is.

[0004] After pouring fresh concrete into the space for filling the concrete of the form A assembled in the state shown in FIG. 4 and curing the concrete, the cores a ₇ and a ₈ are pulled out, and then, as shown in FIG. The molds a _{1 to} a ₄ are developed and the block product is taken out.

When manufacturing a block using such a formwork, assembling and disassembling of the frame material are repeated each time, and at the time of assembly, the frame material is fixed so that the frame materials do not move. It is connected and fixed using a jig. As this fixing jig, a dedicated fixing jig as shown in FIG. 6 has been conventionally used.

In FIG. 1, a fixing jig 10 has a C-shaped frame 11 to which a first holding member 12 is attached at one end and a second holding member 14 is attached at the other end via a handle 15. It is a thing.

The first holding member 12 is formed by inserting a bolt-shaped threaded member from the inside into one end of the frame 11 and fixing it with a nut 13. The second holding member 14 is pivotally supported on the tip of the handle 15, and the handle 15 is pivotally supported on the other end of the frame 11. When the handle 15 is rotated to the frame 11 side (clockwise in FIG. 6), the second holding member 14 separates from the first holding member 12 and rotates in the opposite direction, as indicated by the chain line in the figure. Then, as shown by the solid line, the second holding member 14 approaches the first holding member 12.

In order to fix the frame material edge portions of the formwork using the fixing jig 10, the position of the nut 13 is adjusted in accordance with the thickness of the frame material edge portions c ₁ and c ₂ to adjust the first portion. After moving the holding member 12 back and forth to adjust the distance between the first holding member 12 and the second holding member 14, apply the fixing jig 10 to the fixed position of the edge of the frame material, and place the handle 15 at the position indicated by the alternate long and short dash line. The frame edge portions are fixed to each other by rotating from to the position indicated by the solid line. By performing such fixing at a plurality of positions on the mold, the whole mold is fixed.

When disassembling the mold, the fixing jig 10 is removed from the edge of the frame material in the reverse order of the above procedure. That is, the handle 15 is rotated from the position indicated by the solid line to the position indicated by the alternate long and short dash line to remove the fixing jig 10 from the edge of the frame member.

According to this fixing jig 10, there is an advantage that the frame edge portions can be fixed to each other by a simple operation.

[0011]

[Problems to be solved by the device]

 However, since the fixing jig 10 described above merely sandwiches the edge portions of the frame members, the frame members slide on each other and move in the X and Y directions shown in FIG. The power to prevent is weak. Therefore, by forming a concave-convex locking portion that engages with each other on the edge of the frame material or by forming a hole in the edge of the frame material and inserting a bar into this hole, the arrow X direction of the frame material and Y It tries to prevent the movement in the direction.

However, in the method of preventing the movement of the frame material by the engaging portions of the unevenness, forming the convex portion on the frame material is troublesome in manufacturing the frame material, regardless of forming the concave portion, There is a problem that the manufacturing cost of the frame material becomes high. In addition, the method of inserting a bar into the hole formed in the frame material to prevent movement of the frame material has a problem that the number of work steps for fixing the frame material increases.

The problem to be solved in the present invention is to fix a formwork capable of preventing movement due to sliding of the frame material while taking advantage of the advantage that the conventional fixing jig can be fixed by a simple operation. To get the jig.

[0014]

[Means for Solving the Problems]

 The present invention relates to a jig for fixing a frame, in which a first sandwiching member is attached to one end of a roughly C-shaped frame and a second sandwiching member is attached to the other end of the frame through a rotating handle. A rod-shaped body in which the first holding member is attached to one end of the frame so that the base end portion can swing in the elongated hole formed in the one end portion and the second holding member is oriented to the first holding member. The second holding member is provided with a hole into which the rod-shaped body of the first holding member is fitted.

[0015]

【Example】

 1 is a perspective view of a fixing jig according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a state in which a holding portion of the fixing jig of FIG. 1 is released.

The fixing jig 1 swingably attaches the first holding member 3 to one end of a C-shaped frame 2 via an attachment tool 2a formed in a U-shaped cross section, and attaches it to the other end at a first position. The holding member 2 of 2 is attached via a handle 5.

The first holding member 3 has a tapered rod-shaped body 3 a at its tip, and its base end is pivotally supported in a long hole 2 b of a fixture 2 a provided at one end of the frame 2. ing. A nut-shaped adjusting member 3b is provided between the rod-shaped body 3a and the base end portion so as to be movable in the longitudinal direction of the holding member 3 by being screwed into a male screw provided at the base end portion.

The second holding member 4 has a hole 4 a into which the rod-shaped body 3 a of the first holding member 3 is fitted, and is pivotally supported by the tip of the handle 5.

The handle 5 is rotatably supported by the other end of the frame 2, and by rotating the handle 5, the second holding member 4 is moved relative to the first holding member 3. The structure is such that they are connected and disconnected.

In this fixing jig 1, when the handle 5 is rotated to the frame 2 side (clockwise in FIG. 1), the second holding member 4 is placed in the first holding member 3 as shown in FIG. When separated and rotated in the opposite direction (counterclockwise in FIG. 2), the second holding member 4 approaches the first holding member 3 as shown in FIG. At this time, the pivotal support position P ₁ of the handle 5 with respect to the frame 2 and the pivotal support position P ₂ of the second holding member 4 with respect to the handle 5 are different from each other. The holding member 4 also turns in the turning direction of the handle 5. Therefore, even when the second holding member 4 rotates, the rod-shaped body 3a of the first holding member 3 smoothly moves in and out of the hole 4a in accordance with the rotation of the second holding member 4. A holding member 3 is pivotally supported in a long hole 2b of a fixture 2a provided at one end of the frame 2 so as to be swingable.

In using the fixing jig 1, first, a mold frame is assembled as illustrated in FIG. At this time, the rod-shaped body 3a of the fixing jig 1 is assembled after confirming that the holes at the edges of the frame material are fitted. Next, the holding members 3 and 4 of the fixing jig 1 are released (the state shown in FIG. 2), and the rod-shaped body 3a of the first holding member 3 is fitted into the hole in the edge portion of the frame member. After that, the handle 5 of the fixing jig 1 is rotated to move the second holding member 4 toward the first holding member 3 side, and the rod-like shape of the first holding member 3 is inserted into the hole 4a of the second holding member 4. The body 3a is inserted. This fixes the edges of the frame materials. Here, the adjusting member 3b of the first holding member 3 is moved in the axial direction of the rod-shaped member 3a in accordance with the thickness of the edge of the frame member to set the distance between the adjusting member 3b and the second holding member. Adjust. By performing such fixing at a plurality of positions of the mold, the whole mold is firmly fixed.

Then, in fixing the frame member using the fixing jig 1 of the present embodiment, the rod-shaped body 3a of the first holding member 3 penetrates the hole of the frame member edge portion and the second holding member is formed. Since they are fitted in the holes 4a of No. 4, the frame members do not slide and move with each other.

Further, when the handle 5 is rotated, the second holding member 4 is rotated in the rotation direction of the handle 5, and the hole 4 a of the second holding member 4 and the rod-like shape of the first holding member 3 are rotated. Although the axial directions of the body 3a are displaced from each other, the first holding member 3 is swingably attached to the fixture 2a of the frame 2, so that the rod-shaped body 3a is rotated by the second holding member 4. Follows smoothly and goes in and out through the hole 4a.

When disassembling the formwork, the fixing member is removed from the frame material in the reverse order of the above procedure. That is, the handle 5 is turned to the frame 2 side to pull out the second holding member 4 from the rod-shaped body 3a of the first holding member 3, and the entire fixing jig is removed from the edge of the frame material.

[0025]

[Effect of device]

 The present invention has the following effects.

The frame material of the formwork can be fixed in one operation, and the work efficiency is improved.

The frame jigs can be fixed so as not to move in any direction only by the fixing jig of the present invention, and it is not necessary to perform fixing by another jig unlike the conventional case.

[0028]

[Brief description of drawings]

FIG. 1 is a perspective view of a fixing jig according to an embodiment of the present invention.

[0029]

FIG. 2 is a perspective view showing a state in which a holding portion of the fixing jig of FIG. 1 is released.

[0030]

FIG. 3 is a perspective view showing an example of a concrete product.

[0031]

FIG. 4 is a perspective view showing an example of a concrete product formwork.

[0032]

5 is a perspective view showing a state in which the mold of FIG. 4 is developed.

[0033]

FIG. 6 is a perspective view showing a conventional fixing jig.

[0034]

[Explanation of symbols]

1 Fixing jig 2 Frame 2a Mounting tool 2b Long hole 3 First holding member 3a Rod-like body 3b Adjusting member 4 Second holding member 4a Hole 5 Handle P ₁ , P ₂ Shaft support position

Claims (1)

[Scope of utility model registration request] 1. A jig for fixing a formwork, wherein a first sandwiching member is attached to one end of a substantially C-shaped frame, and a second sandwiching member is attached to the other end of the frame through a turning handle. The first holding member is attached to one end portion of the frame so that the base end portion can swing in the elongated hole formed at one end portion of
A mold in which a rod-shaped body oriented to the second clamping member is attached to the first clamping member, and a hole into which the tip end portion of the rod-shaped body of the first clamping member is fitted is provided in the second clamping member. Frame fixing jig.