JPS5911553Y2 - Concrete formwork bottom separator set - Google Patents

Description

[Detailed description of the invention] The present invention relates to a separator set for maintaining the gap between frame plates, which is placed at the bottom of a concrete form when constructing concrete structures such as irrigation canals and retaining walls. The present invention relates to a separator set comprised of a separator base material and a pair of frame plate abutting members attached near both ends of the separator base material.

The separator shown in Fig. 1 has already been developed by the inventor of the present invention, and this separator 1 has a separator base material 2 made of a long bar 11 with spaces near both ends corresponding to the space between the bottoms of the frame plates. It is formed by welding a pair of frame plate abutting members 3, 3.

These frame plate abutting members 3, 3 are for keeping the frame plate interval constant by abutting against the bottom inner surface of both frame plates, respectively. Since it is fixed to the base material 2, its installation is troublesome, and since the frame plate abutting members 3, 3 are welded in advance at a fixed interval at a factory etc., the interval is the same as the interval at the bottom of the formwork at the site. In this case, the separator cannot be used and the formwork assembly work is delayed.

The present invention was made in order to improve the above-mentioned problems, and includes a separator base material in which a plurality of retaining parts are formed at appropriate intervals near both ends of a frame material, and a separator base material at both ends of the separator base material. A pair of frame plate abutting members are respectively locked and fixed in the vicinity, and the frame plate abutting members can be installed at the work site, and each frame plate abutting member can be engaged with an appropriate retaining part. It is an object of the present invention to provide a formwork bottom separator set whose spacing can be adjusted by stopping the separators.

Hereinafter, the present invention will be explained based on the illustrated embodiment.
A separator set according to an embodiment of the present invention is shown in the figures.

The separator set 1 of this embodiment includes a separator base material 2 formed with three retaining portions 13, 13.13 formed at appropriate intervals near both ends 11a, 11a of a long bar 11, respectively; It is constituted by a pair of frame plate abutting members 3, 3 having a flat bottom plate 21 and a rising plate 22, and in the form of a locking part that can be locked to the engaging part 13 of the separator base material 2, By locking and fixing the frame plate contact members 3, 3 to appropriate engagement portions 13, 13, respectively, the interval between the rising plates 22, 22 of the frame plate contact members 3, 3 can be adjusted to an appropriate interval. It is configured so that it can be done.

The engaging parts 13, 13... of the separator base material 2 are
Both ends 11 a of the bar 11 are formed by bulging out (numerals 14.14) in both lateral directions using a press or the like, and between the outer ends of the bulging portions 14.14. The width W of the bar 11 is larger than the diameter of the bar 11.

Further, the intervals L between the retaining portions 13 and 13 are suitably equal intervals (for example, 3 cm intervals).

The bar-shaped ends 11a, lla of the separator base material 2 are bent upward from the bar-shaped base 11b, and a head 12.12 larger than the diameter D of the bar 11 is formed at the tips 11a, 11a. being intimidated.

This head 12.12 is for hooking a claw member 32 of a tightening device 7 (FIG. 6), which will be described later.

The frame plate abutting member 3 consists of a flat bottom plate 21 that is grounded on the base plate 4 (FIG. 6) and a rising plate 22 that contacts the bottom inner surface of the frame plate 5, and the flat plate 21 and the rising plate 22 are folded into an L shape. It is curved and shaped.

The length T of the flat bottom plate 21 is equal to the distance L between the retaining parts 13 and 13.
The height of the rising plate 22 is designed to be an appropriate height.

The flat bottom plate 21 is formed with a cutout groove 23 extending over its entire length in the longitudinal direction T and spanning the lower end of the rising plate 22.

The groove width Y of the notched groove 23 is formed to be approximately the same as the diameter D of the bar 11, so that the bar 11 can be fitted into the notched groove 23.

Note that the groove width Y of the notched groove 23 is equal to the width of the bulged portion 14 of the engaging portion 13.
．． It is smaller than the width W between the outer ends of 14.

A groove edge 23a on one side of the notched groove 23 has a groove edge 23a at a position apart from the upright plate 22 by a minute distance A (approximately 3 mm) to allow the engaging portion 13 of the bar 11 to pass through. A notch 28 is formed.

Note that the notches 28 may be formed in the groove edges 23a on both sides of the notch groove 23.

Further, a substantially semi-circular connecting portion 24 is formed at the rear end portion 21a of the flat bottom plate 21 so as to straddle the notched groove 23 from above.

This connecting portion 24 is formed by extruding a part of the flat bottom plate 22 so as to project upward, and the connecting portion 24 is formed when the frame plate abutting member 3 is fitted onto the separator base material 2. It acts to hold the bar 11 from above.

The distance Z between the front end of the connecting portion 24 and the rising plate 22 is designed to be larger than the length X of the retaining portion 13.

Nail holes 26, 26 are formed in the flat bottom plate 21.

By driving nails 27 into the nail holes 26, 26, the frame plate abutting member 3 can be fixed onto the base 4.

An outward projecting piece 25 is integrally formed at the upper end of the rising plate 22.

This protruding piece 25 bites into the bottom inner surface of the frame plate 5 when the frame plate 5 is brought into contact with the frame plate 5 to prevent the frame plate 5 from shifting.

Next, a method of connecting the separator set 1 having the above structure will be explained. The frame plate abutting members 3, 3 are connected to each rising plate 22.
Each cutout groove 23, 23 is fitted into an appropriate engagement portion 13, 13 of the separator base material 2, with the notch 22 facing outward.

At that time, the frame plate abutting member 3 fits the notch groove 23 into the engaging portion 13 of the separator base material 2 from the lateral direction, and then the frame plate abutting member 3 is attached to the separator base material 2. Rotate upwards by 90 degrees.

At this time, the frame plate abutting member 3 is fitted into the retaining part 13 so that the notch 28 formed on one side groove edge 23a of the notch groove 23 is located on the lower side, and from this state the frame plate abutting member 3 is When the plate abutting member 3 is rotated upward, one bulge 14 of the retaining portion 13
can pass through the notch 28.

Then, the frame plate abutting member 3 is moved inward with respect to the separator base material 2, and the rising plate 22 is brought into contact with the front end of the engaging portion 13, so that the separator set 1 can be combined.

In this state, the engaging part 13 of the separator base material 2 is placed so as to straddle both groove edges 23 a , 23 a of the notched groove 23 of the frame plate abutting member 3 , and the connecting part 24 is connected to the bar 11 . Since it is arranged so as to be held from above, the frame plate abutting member 3 will not fall off or rotate from the separator base material 2.

Note that when this separator set 1 is combined, the frame plate abutting member 3 can move outward with respect to the separator base material 2, but as will be described later, when assembling the formwork, the frame plate abutting member 3 The frame plate abutting member 3, which applies only the action of being pressed inward, does not move outward.

In addition, each frame plate abutting member 3, 3 is connected to each rising plate 22. 22 are fitted into appropriate retaining parts 13, 13 so that the intervals between them are the same.

The separator set of this embodiment is used by being placed at the bottom of the mold as shown in FIG.

Incidentally, the separator set 1 is joined in advance at the site so that the interval between the upright plates 22, 22 of each frame plate abutting member 3, 3 is equal to the interval between the inner surfaces of the floor portions of each frame plate 5, 5.

This separator set 1 is fixed in parallel on a pre-cast concrete base 4 by nailing a number of them.

Next, the bottom inner surfaces of the frame plates 5, 5 are brought into contact with the rising plates 22, 22, . . . of the respective frame plate abutting members 3, 3, .

Incidentally, a suitable separator 8 is interposed in the upper part between the frame plates 5, 5.

Tightening devices 7, 7 for tightening both frame plates 5, 5 are arranged upright on the outside of each frame plate 5, 5 via horizontal flap members 6, 6, respectively.

This tightening device 7 is constructed by attaching a claw member 32 to the lower part of a vertical pipe member 31, which is movable laterally (inside and out) with respect to the vertical pipe member 31, and a wedge 33 is driven into the claw member 32. As a result, the claw member 32 is configured to move outwardly with respect to the vertical tube member 31.

Further, this tightening device 7 is used in a set of two, and the upper ends of each are connected by a connecting member 9.

In addition, when installing the tightening devices 7, 7 on the outside of the frame plates 5, 5, the claw pieces 32a of the claw members 32 are attached to the separator set 1.
It is hung on the head 12 of.

When the wedge 33 is driven into the claw member 32 in this state, the claw member 3
2 tries to move outward relative to the vertical tube 31,
Since the claw piece 32a is hooked to the head 12, the vertical pipe material 3
1 moves inward and acts to press the bottom of the frame plate 5 against the rising plate 22 of the frame plate abutting member 3 through the horizontal flap member 6, and the bottom of the frame plate 5 is pressed against the vertical pipe member 31 and the rising plate 22 of the frame plate abutting member 3. It is tightly held between the plates 22.

Incidentally, the upper parts of the frame plates 5, 5 are also tightened by an appropriate method.

For example, as shown in FIG. 6, a turnbuckle 10 can be attached to the connecting member 9, and the upper part of the formwork can be tightened by the turnbuckle 10.

If the distance from the upright plate 22 to the head 12 of the separator set 1 is extremely long (or short), a thicker (or smaller) horizontal butterfly member 6 is interposed.

Next, to explain the effects of the present invention, the formwork bottom separator set of the present invention has the following effects.

(1) A separator base material 2 in which a plurality of retaining portions 13 and 13 are formed at appropriate intervals near both ends of a long bar 11, and a pair of frame plate parts that are retained and fixed to the retaining portions 13. The two rising plates 22. Since the spacing between the separators 22 can be adjusted, one type of separator set 1 can be used for formworks with different spacings between the frame bases.

(2) The separator base material 2 and the frame plate abutting members 3, 3 can be connected by a simple operation of fitting the notch grooves 23 into the engaging portions 13, and this operation is also performed on the formwork 5. , 5 can be done while corresponding to the bottom spacing of separator set 1.
There is no possibility that the gap does not match the bottom spacing of the formwork, and there is no delay in the formwork assembly work.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a mold bottom separator developed by the present inventor, FIG. 2 is a perspective view showing a separated state of a mold bottom separator set according to an embodiment of the present invention, and FIG. Partially enlarged perspective view showing the combined state of the separator set in Figure 4.
The figure is a plan view of the separator set in Figure 3, and Figure 5 is a plan view of the separator set in Figure 3.
The sectional view shown in FIG. 6 is an explanatory diagram of how to use the separator set shown in FIGS. 2 to 5. DESCRIPTION OF SYMBOLS 1...Separator set, 2...Separator base material, 3...Frame plate contact member, 11...
...Bar material, 11 a...Bar material end, 12...
...Head, 13...Engagement part, 21...
...Flat bottom part, 21a... Rear end side, 22...
...Rising portion, 23...Notch groove, 23a...
... Groove edge, 24 ... Locking piece, 28 ...
...Notch.

Claims (1)

[Scope of utility model registration request] A plurality of convex engaging portions 1 protrude laterally at appropriate intervals near both ends 11a of the long bar 11, respectively.
A separator base material 2 having the shape of 3, 13...,
It has a flat bottom plate 21 and a rising plate 22, and is formed with a notched groove 23 having a groove width approximately equal to the diameter of the bar 11 spanning the flat bottom plate 21 and the rising plate 22, and further has a groove edge of the notched groove 23. 2
3a, a notch 28 is formed at a position a minute distance away from the upright plate 22 to allow the engaging portion 13 of the bar 11 to pass through rotationally, and the rear end of the flat bottom plate 21 is formed. A separator set is formed on the side 21a by a pair of frame plate abutting members 3, 3 each having a substantially semicircular arc-shaped connecting portion 24 spanning the notched groove 23 from above; When the appropriate engaging portion 13 of the separator base material 2 is fitted into the notch groove 23 of the frame plate abutting member 3, the connecting portion 24 of the frame plate abutting member 3 holds the bar 11 from above. The retaining portion 13 is placed on the groove edge 23a of the cutout groove 23 of the frame plate abutting member 3, so that the rising plate 22 of the frame plate abutting member 3
A concrete formwork bottom separator set, characterized in that the separator set is fixed to the bottom of a concrete formwork.