JPS5911552Y2 - 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 constituted by 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 gaps corresponding to the spacing between the bottoms of the frame plates near both ends of the separator base material 2. It is formed by welding a pair of frame plate abutting members 3, 3 together.

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 that 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 bar, and a separator base material at both ends of the separator base material. A pair of frame plate abutting members are respectively fixed and locked in the vicinity, and the frame plate abutting members can be attached at the work site, and each frame plate abutting member can be engaged with an appropriate engagement portion. 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 embodiments. Figs. 2 to 5 show a separator set according to the first embodiment of the present invention, and Figs. 6 to 8 show a separator set according to the second embodiment of the present invention. Example separator sets are each shown.

The separator set 1 shown in FIGS. 2 to 5 is a separator formed by forming three retaining portions 13, 13.13 at appropriate intervals near both ends 11a, 11a of a long bar 11, respectively. Base material 2, flat bottom plate 21 and rising plate 22
and a pair of frame plate abutting members 3, 3 having a locking portion that can be locked to the engaging portion 13 of the separator base material 2, and the frame plate abutting member 3 , 3 of the frame plate abutting members 3, 3 by locking and fixing them to appropriate engaging portions 13, 13, respectively. 22 can be adjusted as appropriate.

The engaging parts 13, 13... of the separator base material 2 are
A portion of the bar 11 near both ends 11a and lla is bulged in both lateral directions (reference numeral 14.14) using a press or the like, and the width W of each outer end of the bulged portion 14.14 is is bar 1
It is shaped to be larger than the diameter of 1.

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

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

This head 12.12 is for hooking a claw member 32 of a tightening device 7 (FIG. 9) which will be described later.

The frame plate abutting member 3 includes a flat bottom plate 21 that is grounded on the base plate 4 (FIG. 9) and a rising plate 22 that contacts the bottom inner surface of the frame plate 5, and the rising plate 22 of the flat bottom plate 21 is shaped like an L. It is bent and has an impressive shape.

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 this notched groove 23 is approximately equal to 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.

The groove edges 23a, 23a of the notch groove 23 are provided with a plate-shaped locking piece 24 on the rear end side. There are 24 or so buildings erected.

Each of the locking pieces 24.24 can be bent inward, and each of the locking pieces 24.24 has a distance Z between the front end 24a of the locking piece 24 and the upright plate 22. is positioned so that the length is approximately equal to 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, to explain how to connect the separator set 1 with the above structure, the frame plate contact 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 retaining 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.

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.

In this state, the bulging portion 14.14 of the retaining portion 13 is connected to the flat bottom plate 2.
1, and the engaging portion 13 is placed on the groove edge portions 23a, 23a of the cutout groove 23 of 1. 24 and the front end portions 24a, 24a.

Then, the locking piece 24. 24 are respectively bent toward the center of the notched groove so as to hold the bar 11 from above, the work of joining the frame plate abutting members 3, 3 and the separator base material 2 is completed.

In this state, the separator base material 2 and the frame plate abutting member 3 are
An appropriate engaging portion 13 of the separator base material 2 is located between the upright plate 22 of the frame plate abutting member 3 and the front end portions 24a of the locking pieces 24a, and is not movable in the front-rear direction. The locking pieces 24 . Since the rods 24 are bent so as to hold the rods 11 from above, the rods 11 are not displaced from each other and are kept in a stable state.

Separator set 1 of the embodiment shown in FIGS. 6 to 8
The separator base material 2 has meandering engaging portions 13, 13, . It is constructed by a frame plate abutting member 3 having the same shape.

The engaging parts 13, 13, . There is.

That is, the horizontal width W of the uneven portion of the retaining portion 13 is larger than the groove width Y of the notched groove 23 of the frame plate abutting member 3, and the vertical width of the uneven portion is equal to the groove width of the notched groove 23. It is almost the same as Y.

The separator set 1 of this embodiment is combined as follows.

That is, the frame plate abutting member 3 is connected to the rising plate 2 of the frame plate abutting member 3.
2 to face outward, fit the notch groove 23 into a suitable retaining part 13 from the lateral direction, and rotate the frame plate abutting member 3 upward by 90 degrees. The locking pieces 24, 24 are erected on the rear side of the edges 23a, 23a. The frame plate abutting member 3 is brought into contact with the engaging portion 13 of the separator base material 2 by bending it so as to hold the bar 11 from above.

In this state, the convex portions 16.1 on each side of the engaging portions 13, 13
6 are the respective groove edges 23 a , 23 of the notched groove 23
a and is placed on the locking piece 24. 24 is the engaging part 13
Since the locking pieces 24 and 24 are bent so as to hold the bar 11 from above, the frame plate abutting member 3 is in contact with the separator. It is locked and fixed in a stable state without rotating, shifting, or coming off with respect to the base material 2.

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

Incidentally, the separator set 1 includes the upright plates 22 . 22 are bonded in advance at the site so that the distance between the frame plates 5, 5 is equal to the distance between the bottom inner surfaces of the frame plates 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, .

A suitable separator 8 is interposed in the upper part between both 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 has a claw member 32 attached to the lower part of the 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. The claw member 32 is configured to move outwardly with respect to the vertical tube member 31 by being pushed in.

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.

Incidentally, when the tightening devices 7, 7 are installed upright on the outside of the frame plates 5, 5, the claw pieces 32a of the claw members 32 are hooked onto the head 12 of the separator set 1.

When the wedge 33 is driven into the claw member 32 in this state, the claw member 3
2 tries to move outward with respect to the vertical pipe material 31, but
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 via the horizontal flap member 6, and the bottom of the frame plate 5 is pressed against the vertical pipe member 31. It is firmly tightened and held between the upright 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. 9, 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 having a plurality of engaging portions 13, 13, . It is constituted by a pair of frame plate abutting members 3, 3, and 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 molds having 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 groove 23 into the engaging portion 13 and bending the locking piece 24. Moreover, since this work can be carried out at the formwork assembly site while taking into account the distance between the bottoms of the frame plates 5, 5, there is no possibility that the separator set 1 does not match the distance between the bottoms of the formwork and the formwork assembly work is not delayed. .

[Brief explanation of drawings]

Fig. 1 is a perspective view of a formwork bottom separator developed by the present inventor, Fig. 2 is a perspective view showing a separated state of a formwork bottom separator set according to an embodiment of the present invention, and Fig. 3 is the same as Fig. 1. Partially enlarged perspective view showing the secured state of the separator set, No. 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.
Fig. 6 is a partial perspective view showing a separate state of the formwork bottom separator set according to another embodiment of the present invention, and Fig. 7 shows a combined state of the separator set of Fig. 6. 8 is a plan view of the separator set shown in FIG. 7, and FIG. 9 is a diagram illustrating 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, 22...Rising part, 23...
...Notch groove, 23a...Groove edge, 24...
...Latching piece.

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 a notched groove 23 is formed across the flat bottom plate 21 and the rising plate 22 and has a groove width approximately equal to the diameter of the bar 11. A pair of frame plate abutments each having a locking piece 24 that can be bent toward the center of the cutout groove 23 at a position on the groove edge 23 a and at a suitable distance from the upright plate 22 . The separator set is composed of contact members 3, 3, and when the appropriate retaining portion 13 of the separator base material 2 is fitted into the notch groove 23 of the frame contact member 3, the frame The locking piece 24 of the plate abutting member 3 is bendable so as to hold the bar 11, so that the locking piece 24 is locked to the retaining portion 13. Concrete formwork bottom separator set.